1 /* 2 * TI 3410/5052 USB Serial Driver 3 * 4 * Copyright (C) 2004 Texas Instruments 5 * 6 * This driver is based on the Linux io_ti driver, which is 7 * Copyright (C) 2000-2002 Inside Out Networks 8 * Copyright (C) 2001-2002 Greg Kroah-Hartman 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * For questions or problems with this driver, contact Texas Instruments 16 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or 17 * Peter Berger <pberger@brimson.com>. 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/errno.h> 22 #include <linux/firmware.h> 23 #include <linux/slab.h> 24 #include <linux/tty.h> 25 #include <linux/tty_driver.h> 26 #include <linux/tty_flip.h> 27 #include <linux/module.h> 28 #include <linux/spinlock.h> 29 #include <linux/ioctl.h> 30 #include <linux/serial.h> 31 #include <linux/kfifo.h> 32 #include <linux/mutex.h> 33 #include <linux/uaccess.h> 34 #include <linux/usb.h> 35 #include <linux/usb/serial.h> 36 37 /* Configuration ids */ 38 #define TI_BOOT_CONFIG 1 39 #define TI_ACTIVE_CONFIG 2 40 41 /* Vendor and product ids */ 42 #define TI_VENDOR_ID 0x0451 43 #define IBM_VENDOR_ID 0x04b3 44 #define TI_3410_PRODUCT_ID 0x3410 45 #define IBM_4543_PRODUCT_ID 0x4543 46 #define IBM_454B_PRODUCT_ID 0x454b 47 #define IBM_454C_PRODUCT_ID 0x454c 48 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */ 49 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */ 50 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */ 51 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */ 52 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */ 53 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */ 54 55 /* Multi-Tech vendor and product ids */ 56 #define MTS_VENDOR_ID 0x06E0 57 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108 58 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109 59 #define MTS_CDMA_PRODUCT_ID 0xF110 60 #define MTS_GSM_PRODUCT_ID 0xF111 61 #define MTS_EDGE_PRODUCT_ID 0xF112 62 #define MTS_MT9234MU_PRODUCT_ID 0xF114 63 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115 64 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319 65 66 /* Abbott Diabetics vendor and product ids */ 67 #define ABBOTT_VENDOR_ID 0x1a61 68 #define ABBOTT_STEREO_PLUG_ID 0x3410 69 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID 70 #define ABBOTT_STRIP_PORT_ID 0x3420 71 72 /* Honeywell vendor and product IDs */ 73 #define HONEYWELL_VENDOR_ID 0x10ac 74 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */ 75 76 /* Moxa UPORT 11x0 vendor and product IDs */ 77 #define MXU1_VENDOR_ID 0x110a 78 #define MXU1_1110_PRODUCT_ID 0x1110 79 #define MXU1_1130_PRODUCT_ID 0x1130 80 #define MXU1_1150_PRODUCT_ID 0x1150 81 #define MXU1_1151_PRODUCT_ID 0x1151 82 #define MXU1_1131_PRODUCT_ID 0x1131 83 84 /* Commands */ 85 #define TI_GET_VERSION 0x01 86 #define TI_GET_PORT_STATUS 0x02 87 #define TI_GET_PORT_DEV_INFO 0x03 88 #define TI_GET_CONFIG 0x04 89 #define TI_SET_CONFIG 0x05 90 #define TI_OPEN_PORT 0x06 91 #define TI_CLOSE_PORT 0x07 92 #define TI_START_PORT 0x08 93 #define TI_STOP_PORT 0x09 94 #define TI_TEST_PORT 0x0A 95 #define TI_PURGE_PORT 0x0B 96 #define TI_RESET_EXT_DEVICE 0x0C 97 #define TI_WRITE_DATA 0x80 98 #define TI_READ_DATA 0x81 99 #define TI_REQ_TYPE_CLASS 0x82 100 101 /* Module identifiers */ 102 #define TI_I2C_PORT 0x01 103 #define TI_IEEE1284_PORT 0x02 104 #define TI_UART1_PORT 0x03 105 #define TI_UART2_PORT 0x04 106 #define TI_RAM_PORT 0x05 107 108 /* Modem status */ 109 #define TI_MSR_DELTA_CTS 0x01 110 #define TI_MSR_DELTA_DSR 0x02 111 #define TI_MSR_DELTA_RI 0x04 112 #define TI_MSR_DELTA_CD 0x08 113 #define TI_MSR_CTS 0x10 114 #define TI_MSR_DSR 0x20 115 #define TI_MSR_RI 0x40 116 #define TI_MSR_CD 0x80 117 #define TI_MSR_DELTA_MASK 0x0F 118 #define TI_MSR_MASK 0xF0 119 120 /* Line status */ 121 #define TI_LSR_OVERRUN_ERROR 0x01 122 #define TI_LSR_PARITY_ERROR 0x02 123 #define TI_LSR_FRAMING_ERROR 0x04 124 #define TI_LSR_BREAK 0x08 125 #define TI_LSR_ERROR 0x0F 126 #define TI_LSR_RX_FULL 0x10 127 #define TI_LSR_TX_EMPTY 0x20 128 129 /* Line control */ 130 #define TI_LCR_BREAK 0x40 131 132 /* Modem control */ 133 #define TI_MCR_LOOP 0x04 134 #define TI_MCR_DTR 0x10 135 #define TI_MCR_RTS 0x20 136 137 /* Mask settings */ 138 #define TI_UART_ENABLE_RTS_IN 0x0001 139 #define TI_UART_DISABLE_RTS 0x0002 140 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008 141 #define TI_UART_ENABLE_DSR_OUT 0x0010 142 #define TI_UART_ENABLE_CTS_OUT 0x0020 143 #define TI_UART_ENABLE_X_OUT 0x0040 144 #define TI_UART_ENABLE_XA_OUT 0x0080 145 #define TI_UART_ENABLE_X_IN 0x0100 146 #define TI_UART_ENABLE_DTR_IN 0x0800 147 #define TI_UART_DISABLE_DTR 0x1000 148 #define TI_UART_ENABLE_MS_INTS 0x2000 149 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000 150 151 /* Parity */ 152 #define TI_UART_NO_PARITY 0x00 153 #define TI_UART_ODD_PARITY 0x01 154 #define TI_UART_EVEN_PARITY 0x02 155 #define TI_UART_MARK_PARITY 0x03 156 #define TI_UART_SPACE_PARITY 0x04 157 158 /* Stop bits */ 159 #define TI_UART_1_STOP_BITS 0x00 160 #define TI_UART_1_5_STOP_BITS 0x01 161 #define TI_UART_2_STOP_BITS 0x02 162 163 /* Bits per character */ 164 #define TI_UART_5_DATA_BITS 0x00 165 #define TI_UART_6_DATA_BITS 0x01 166 #define TI_UART_7_DATA_BITS 0x02 167 #define TI_UART_8_DATA_BITS 0x03 168 169 /* 232/485 modes */ 170 #define TI_UART_232 0x00 171 #define TI_UART_485_RECEIVER_DISABLED 0x01 172 #define TI_UART_485_RECEIVER_ENABLED 0x02 173 174 /* Pipe transfer mode and timeout */ 175 #define TI_PIPE_MODE_CONTINUOUS 0x01 176 #define TI_PIPE_MODE_MASK 0x03 177 #define TI_PIPE_TIMEOUT_MASK 0x7C 178 #define TI_PIPE_TIMEOUT_ENABLE 0x80 179 180 /* Config struct */ 181 struct ti_uart_config { 182 __be16 wBaudRate; 183 __be16 wFlags; 184 u8 bDataBits; 185 u8 bParity; 186 u8 bStopBits; 187 char cXon; 188 char cXoff; 189 u8 bUartMode; 190 } __packed; 191 192 /* Get port status */ 193 struct ti_port_status { 194 u8 bCmdCode; 195 u8 bModuleId; 196 u8 bErrorCode; 197 u8 bMSR; 198 u8 bLSR; 199 } __packed; 200 201 /* Purge modes */ 202 #define TI_PURGE_OUTPUT 0x00 203 #define TI_PURGE_INPUT 0x80 204 205 /* Read/Write data */ 206 #define TI_RW_DATA_ADDR_SFR 0x10 207 #define TI_RW_DATA_ADDR_IDATA 0x20 208 #define TI_RW_DATA_ADDR_XDATA 0x30 209 #define TI_RW_DATA_ADDR_CODE 0x40 210 #define TI_RW_DATA_ADDR_GPIO 0x50 211 #define TI_RW_DATA_ADDR_I2C 0x60 212 #define TI_RW_DATA_ADDR_FLASH 0x70 213 #define TI_RW_DATA_ADDR_DSP 0x80 214 215 #define TI_RW_DATA_UNSPECIFIED 0x00 216 #define TI_RW_DATA_BYTE 0x01 217 #define TI_RW_DATA_WORD 0x02 218 #define TI_RW_DATA_DOUBLE_WORD 0x04 219 220 struct ti_write_data_bytes { 221 u8 bAddrType; 222 u8 bDataType; 223 u8 bDataCounter; 224 __be16 wBaseAddrHi; 225 __be16 wBaseAddrLo; 226 u8 bData[0]; 227 } __packed; 228 229 struct ti_read_data_request { 230 __u8 bAddrType; 231 __u8 bDataType; 232 __u8 bDataCounter; 233 __be16 wBaseAddrHi; 234 __be16 wBaseAddrLo; 235 } __packed; 236 237 struct ti_read_data_bytes { 238 __u8 bCmdCode; 239 __u8 bModuleId; 240 __u8 bErrorCode; 241 __u8 bData[0]; 242 } __packed; 243 244 /* Interrupt struct */ 245 struct ti_interrupt { 246 __u8 bICode; 247 __u8 bIInfo; 248 } __packed; 249 250 /* Interrupt codes */ 251 #define TI_CODE_HARDWARE_ERROR 0xFF 252 #define TI_CODE_DATA_ERROR 0x03 253 #define TI_CODE_MODEM_STATUS 0x04 254 255 /* Download firmware max packet size */ 256 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64 257 258 /* Firmware image header */ 259 struct ti_firmware_header { 260 __le16 wLength; 261 u8 bCheckSum; 262 } __packed; 263 264 /* UART addresses */ 265 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */ 266 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */ 267 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */ 268 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */ 269 270 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" 271 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" 272 273 #define TI_FIRMWARE_BUF_SIZE 16284 274 275 #define TI_TRANSFER_TIMEOUT 2 276 277 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ 278 279 /* read urb states */ 280 #define TI_READ_URB_RUNNING 0 281 #define TI_READ_URB_STOPPING 1 282 #define TI_READ_URB_STOPPED 2 283 284 #define TI_EXTRA_VID_PID_COUNT 5 285 286 struct ti_port { 287 int tp_is_open; 288 u8 tp_msr; 289 u8 tp_shadow_mcr; 290 u8 tp_uart_mode; /* 232 or 485 modes */ 291 unsigned int tp_uart_base_addr; 292 struct ti_device *tp_tdev; 293 struct usb_serial_port *tp_port; 294 spinlock_t tp_lock; 295 int tp_read_urb_state; 296 int tp_write_urb_in_use; 297 }; 298 299 struct ti_device { 300 struct mutex td_open_close_lock; 301 int td_open_port_count; 302 struct usb_serial *td_serial; 303 int td_is_3410; 304 bool td_rs485_only; 305 }; 306 307 static int ti_startup(struct usb_serial *serial); 308 static void ti_release(struct usb_serial *serial); 309 static int ti_port_probe(struct usb_serial_port *port); 310 static int ti_port_remove(struct usb_serial_port *port); 311 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); 312 static void ti_close(struct usb_serial_port *port); 313 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 314 const unsigned char *data, int count); 315 static int ti_write_room(struct tty_struct *tty); 316 static int ti_chars_in_buffer(struct tty_struct *tty); 317 static bool ti_tx_empty(struct usb_serial_port *port); 318 static void ti_throttle(struct tty_struct *tty); 319 static void ti_unthrottle(struct tty_struct *tty); 320 static int ti_ioctl(struct tty_struct *tty, 321 unsigned int cmd, unsigned long arg); 322 static void ti_set_termios(struct tty_struct *tty, 323 struct usb_serial_port *port, struct ktermios *old_termios); 324 static int ti_tiocmget(struct tty_struct *tty); 325 static int ti_tiocmset(struct tty_struct *tty, 326 unsigned int set, unsigned int clear); 327 static void ti_break(struct tty_struct *tty, int break_state); 328 static void ti_interrupt_callback(struct urb *urb); 329 static void ti_bulk_in_callback(struct urb *urb); 330 static void ti_bulk_out_callback(struct urb *urb); 331 332 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 333 int length); 334 static void ti_send(struct ti_port *tport); 335 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 336 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 337 static int ti_get_serial_info(struct ti_port *tport, 338 struct serial_struct __user *ret_arg); 339 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, 340 struct serial_struct __user *new_arg); 341 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 342 343 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 344 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 345 346 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 347 __u16 moduleid, __u16 value, __u8 *data, int size); 348 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 349 __u16 moduleid, __u16 value, __u8 *data, int size); 350 351 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 352 unsigned long addr, u8 mask, u8 byte); 353 354 static int ti_download_firmware(struct ti_device *tdev); 355 356 static int closing_wait = TI_DEFAULT_CLOSING_WAIT; 357 358 static const struct usb_device_id ti_id_table_3410[] = { 359 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 360 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 361 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 362 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 363 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 364 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 365 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 366 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 367 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 368 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 369 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 370 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 371 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 372 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 373 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 374 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 375 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 376 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 377 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 378 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 379 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 380 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 381 { } /* terminator */ 382 }; 383 384 static const struct usb_device_id ti_id_table_5052[] = { 385 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 386 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 387 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 388 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 389 { } 390 }; 391 392 static const struct usb_device_id ti_id_table_combined[] = { 393 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 394 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 397 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 398 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 399 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 400 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 401 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 402 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 403 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 404 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 405 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 406 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 407 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 408 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 409 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 410 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 411 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 412 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 413 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 414 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 415 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 416 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 417 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 418 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 419 { } /* terminator */ 420 }; 421 422 static struct usb_serial_driver ti_1port_device = { 423 .driver = { 424 .owner = THIS_MODULE, 425 .name = "ti_usb_3410_5052_1", 426 }, 427 .description = "TI USB 3410 1 port adapter", 428 .id_table = ti_id_table_3410, 429 .num_ports = 1, 430 .attach = ti_startup, 431 .release = ti_release, 432 .port_probe = ti_port_probe, 433 .port_remove = ti_port_remove, 434 .open = ti_open, 435 .close = ti_close, 436 .write = ti_write, 437 .write_room = ti_write_room, 438 .chars_in_buffer = ti_chars_in_buffer, 439 .tx_empty = ti_tx_empty, 440 .throttle = ti_throttle, 441 .unthrottle = ti_unthrottle, 442 .ioctl = ti_ioctl, 443 .set_termios = ti_set_termios, 444 .tiocmget = ti_tiocmget, 445 .tiocmset = ti_tiocmset, 446 .tiocmiwait = usb_serial_generic_tiocmiwait, 447 .get_icount = usb_serial_generic_get_icount, 448 .break_ctl = ti_break, 449 .read_int_callback = ti_interrupt_callback, 450 .read_bulk_callback = ti_bulk_in_callback, 451 .write_bulk_callback = ti_bulk_out_callback, 452 }; 453 454 static struct usb_serial_driver ti_2port_device = { 455 .driver = { 456 .owner = THIS_MODULE, 457 .name = "ti_usb_3410_5052_2", 458 }, 459 .description = "TI USB 5052 2 port adapter", 460 .id_table = ti_id_table_5052, 461 .num_ports = 2, 462 .attach = ti_startup, 463 .release = ti_release, 464 .port_probe = ti_port_probe, 465 .port_remove = ti_port_remove, 466 .open = ti_open, 467 .close = ti_close, 468 .write = ti_write, 469 .write_room = ti_write_room, 470 .chars_in_buffer = ti_chars_in_buffer, 471 .tx_empty = ti_tx_empty, 472 .throttle = ti_throttle, 473 .unthrottle = ti_unthrottle, 474 .ioctl = ti_ioctl, 475 .set_termios = ti_set_termios, 476 .tiocmget = ti_tiocmget, 477 .tiocmset = ti_tiocmset, 478 .tiocmiwait = usb_serial_generic_tiocmiwait, 479 .get_icount = usb_serial_generic_get_icount, 480 .break_ctl = ti_break, 481 .read_int_callback = ti_interrupt_callback, 482 .read_bulk_callback = ti_bulk_in_callback, 483 .write_bulk_callback = ti_bulk_out_callback, 484 }; 485 486 static struct usb_serial_driver * const serial_drivers[] = { 487 &ti_1port_device, &ti_2port_device, NULL 488 }; 489 490 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 491 MODULE_DESCRIPTION(TI_DRIVER_DESC); 492 MODULE_LICENSE("GPL"); 493 494 MODULE_FIRMWARE("ti_3410.fw"); 495 MODULE_FIRMWARE("ti_5052.fw"); 496 MODULE_FIRMWARE("mts_cdma.fw"); 497 MODULE_FIRMWARE("mts_gsm.fw"); 498 MODULE_FIRMWARE("mts_edge.fw"); 499 MODULE_FIRMWARE("mts_mt9234mu.fw"); 500 MODULE_FIRMWARE("mts_mt9234zba.fw"); 501 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 502 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 503 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 504 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 505 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 506 507 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 508 MODULE_PARM_DESC(closing_wait, 509 "Maximum wait for data to drain in close, in .01 secs, default is 4000"); 510 511 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 512 513 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 514 515 static int ti_startup(struct usb_serial *serial) 516 { 517 struct ti_device *tdev; 518 struct usb_device *dev = serial->dev; 519 struct usb_host_interface *cur_altsetting; 520 int num_endpoints; 521 u16 vid, pid; 522 int status; 523 524 dev_dbg(&dev->dev, 525 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 526 __func__, le16_to_cpu(dev->descriptor.idProduct), 527 dev->descriptor.bNumConfigurations, 528 dev->actconfig->desc.bConfigurationValue); 529 530 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 531 if (!tdev) 532 return -ENOMEM; 533 534 mutex_init(&tdev->td_open_close_lock); 535 tdev->td_serial = serial; 536 usb_set_serial_data(serial, tdev); 537 538 /* determine device type */ 539 if (serial->type == &ti_1port_device) 540 tdev->td_is_3410 = 1; 541 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 542 tdev->td_is_3410 ? "3410" : "5052"); 543 544 vid = le16_to_cpu(dev->descriptor.idVendor); 545 pid = le16_to_cpu(dev->descriptor.idProduct); 546 if (vid == MXU1_VENDOR_ID) { 547 switch (pid) { 548 case MXU1_1130_PRODUCT_ID: 549 case MXU1_1131_PRODUCT_ID: 550 tdev->td_rs485_only = true; 551 break; 552 } 553 } 554 555 cur_altsetting = serial->interface->cur_altsetting; 556 num_endpoints = cur_altsetting->desc.bNumEndpoints; 557 558 /* if we have only 1 configuration and 1 endpoint, download firmware */ 559 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 560 status = ti_download_firmware(tdev); 561 562 if (status != 0) 563 goto free_tdev; 564 565 /* 3410 must be reset, 5052 resets itself */ 566 if (tdev->td_is_3410) { 567 msleep_interruptible(100); 568 usb_reset_device(dev); 569 } 570 571 status = -ENODEV; 572 goto free_tdev; 573 } 574 575 /* the second configuration must be set */ 576 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 577 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 578 status = status ? status : -ENODEV; 579 goto free_tdev; 580 } 581 582 return 0; 583 584 free_tdev: 585 kfree(tdev); 586 usb_set_serial_data(serial, NULL); 587 return status; 588 } 589 590 591 static void ti_release(struct usb_serial *serial) 592 { 593 struct ti_device *tdev = usb_get_serial_data(serial); 594 595 kfree(tdev); 596 } 597 598 static int ti_port_probe(struct usb_serial_port *port) 599 { 600 struct ti_port *tport; 601 602 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 603 if (!tport) 604 return -ENOMEM; 605 606 spin_lock_init(&tport->tp_lock); 607 if (port == port->serial->port[0]) 608 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 609 else 610 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 611 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); 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 port->port.drain_delay = 3; 623 624 return 0; 625 } 626 627 static int ti_port_remove(struct usb_serial_port *port) 628 { 629 struct ti_port *tport; 630 631 tport = usb_get_serial_port_data(port); 632 kfree(tport); 633 634 return 0; 635 } 636 637 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 638 { 639 struct ti_port *tport = usb_get_serial_port_data(port); 640 struct ti_device *tdev; 641 struct usb_device *dev; 642 struct urb *urb; 643 int port_number; 644 int status; 645 u16 open_settings; 646 647 open_settings = (TI_PIPE_MODE_CONTINUOUS | 648 TI_PIPE_TIMEOUT_ENABLE | 649 (TI_TRANSFER_TIMEOUT << 2)); 650 651 dev = port->serial->dev; 652 tdev = tport->tp_tdev; 653 654 /* only one open on any port on a device at a time */ 655 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 656 return -ERESTARTSYS; 657 658 port_number = port->port_number; 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_command_out_sync(tdev, TI_OPEN_PORT, 684 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 685 if (status) { 686 dev_err(&port->dev, "%s - cannot send open command, %d\n", 687 __func__, status); 688 goto unlink_int_urb; 689 } 690 691 status = ti_command_out_sync(tdev, TI_START_PORT, 692 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 693 if (status) { 694 dev_err(&port->dev, "%s - cannot send start command, %d\n", 695 __func__, status); 696 goto unlink_int_urb; 697 } 698 699 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 700 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); 701 if (status) { 702 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 703 __func__, status); 704 goto unlink_int_urb; 705 } 706 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 707 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); 708 if (status) { 709 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 710 __func__, status); 711 goto unlink_int_urb; 712 } 713 714 /* reset the data toggle on the bulk endpoints to work around bug in 715 * host controllers where things get out of sync some times */ 716 usb_clear_halt(dev, port->write_urb->pipe); 717 usb_clear_halt(dev, port->read_urb->pipe); 718 719 if (tty) 720 ti_set_termios(tty, port, &tty->termios); 721 722 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 723 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 724 if (status) { 725 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 726 __func__, status); 727 goto unlink_int_urb; 728 } 729 730 status = ti_command_out_sync(tdev, TI_START_PORT, 731 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 732 if (status) { 733 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 734 __func__, status); 735 goto unlink_int_urb; 736 } 737 738 /* start read urb */ 739 urb = port->read_urb; 740 if (!urb) { 741 dev_err(&port->dev, "%s - no read urb\n", __func__); 742 status = -EINVAL; 743 goto unlink_int_urb; 744 } 745 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 746 urb->context = tport; 747 status = usb_submit_urb(urb, GFP_KERNEL); 748 if (status) { 749 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 750 __func__, status); 751 goto unlink_int_urb; 752 } 753 754 tport->tp_is_open = 1; 755 ++tdev->td_open_port_count; 756 757 goto release_lock; 758 759 unlink_int_urb: 760 if (tdev->td_open_port_count == 0) 761 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 762 release_lock: 763 mutex_unlock(&tdev->td_open_close_lock); 764 return status; 765 } 766 767 768 static void ti_close(struct usb_serial_port *port) 769 { 770 struct ti_device *tdev; 771 struct ti_port *tport; 772 int port_number; 773 int status; 774 int do_unlock; 775 unsigned long flags; 776 777 tdev = usb_get_serial_data(port->serial); 778 tport = usb_get_serial_port_data(port); 779 780 tport->tp_is_open = 0; 781 782 usb_kill_urb(port->read_urb); 783 usb_kill_urb(port->write_urb); 784 tport->tp_write_urb_in_use = 0; 785 spin_lock_irqsave(&tport->tp_lock, flags); 786 kfifo_reset_out(&port->write_fifo); 787 spin_unlock_irqrestore(&tport->tp_lock, flags); 788 789 port_number = port->port_number; 790 791 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 792 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 793 if (status) 794 dev_err(&port->dev, 795 "%s - cannot send close port command, %d\n" 796 , __func__, status); 797 798 /* if mutex_lock is interrupted, continue anyway */ 799 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); 800 --tport->tp_tdev->td_open_port_count; 801 if (tport->tp_tdev->td_open_port_count <= 0) { 802 /* last port is closed, shut down interrupt urb */ 803 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 804 tport->tp_tdev->td_open_port_count = 0; 805 } 806 if (do_unlock) 807 mutex_unlock(&tdev->td_open_close_lock); 808 } 809 810 811 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 812 const unsigned char *data, int count) 813 { 814 struct ti_port *tport = usb_get_serial_port_data(port); 815 816 if (count == 0) { 817 return 0; 818 } 819 820 if (!tport->tp_is_open) 821 return -ENODEV; 822 823 count = kfifo_in_locked(&port->write_fifo, data, count, 824 &tport->tp_lock); 825 ti_send(tport); 826 827 return count; 828 } 829 830 831 static int ti_write_room(struct tty_struct *tty) 832 { 833 struct usb_serial_port *port = tty->driver_data; 834 struct ti_port *tport = usb_get_serial_port_data(port); 835 int room = 0; 836 unsigned long flags; 837 838 spin_lock_irqsave(&tport->tp_lock, flags); 839 room = kfifo_avail(&port->write_fifo); 840 spin_unlock_irqrestore(&tport->tp_lock, flags); 841 842 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 843 return room; 844 } 845 846 847 static int ti_chars_in_buffer(struct tty_struct *tty) 848 { 849 struct usb_serial_port *port = tty->driver_data; 850 struct ti_port *tport = usb_get_serial_port_data(port); 851 int chars = 0; 852 unsigned long flags; 853 854 spin_lock_irqsave(&tport->tp_lock, flags); 855 chars = kfifo_len(&port->write_fifo); 856 spin_unlock_irqrestore(&tport->tp_lock, flags); 857 858 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 859 return chars; 860 } 861 862 static bool ti_tx_empty(struct usb_serial_port *port) 863 { 864 struct ti_port *tport = usb_get_serial_port_data(port); 865 int ret; 866 u8 lsr; 867 868 ret = ti_get_lsr(tport, &lsr); 869 if (!ret && !(lsr & TI_LSR_TX_EMPTY)) 870 return false; 871 872 return true; 873 } 874 875 static void ti_throttle(struct tty_struct *tty) 876 { 877 struct usb_serial_port *port = tty->driver_data; 878 struct ti_port *tport = usb_get_serial_port_data(port); 879 880 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 881 ti_stop_read(tport, tty); 882 883 } 884 885 886 static void ti_unthrottle(struct tty_struct *tty) 887 { 888 struct usb_serial_port *port = tty->driver_data; 889 struct ti_port *tport = usb_get_serial_port_data(port); 890 int status; 891 892 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 893 status = ti_restart_read(tport, tty); 894 if (status) 895 dev_err(&port->dev, "%s - cannot restart read, %d\n", 896 __func__, status); 897 } 898 } 899 900 static int ti_ioctl(struct tty_struct *tty, 901 unsigned int cmd, unsigned long arg) 902 { 903 struct usb_serial_port *port = tty->driver_data; 904 struct ti_port *tport = usb_get_serial_port_data(port); 905 906 switch (cmd) { 907 case TIOCGSERIAL: 908 return ti_get_serial_info(tport, 909 (struct serial_struct __user *)arg); 910 case TIOCSSERIAL: 911 return ti_set_serial_info(tty, tport, 912 (struct serial_struct __user *)arg); 913 } 914 return -ENOIOCTLCMD; 915 } 916 917 918 static void ti_set_termios(struct tty_struct *tty, 919 struct usb_serial_port *port, struct ktermios *old_termios) 920 { 921 struct ti_port *tport = usb_get_serial_port_data(port); 922 struct ti_uart_config *config; 923 tcflag_t cflag, iflag; 924 int baud; 925 int status; 926 int port_number = port->port_number; 927 unsigned int mcr; 928 u16 wbaudrate; 929 u16 wflags = 0; 930 931 cflag = tty->termios.c_cflag; 932 iflag = tty->termios.c_iflag; 933 934 dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag); 935 dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__, 936 old_termios->c_cflag, old_termios->c_iflag); 937 938 config = kmalloc(sizeof(*config), GFP_KERNEL); 939 if (!config) 940 return; 941 942 /* these flags must be set */ 943 wflags |= TI_UART_ENABLE_MS_INTS; 944 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 945 config->bUartMode = tport->tp_uart_mode; 946 947 switch (C_CSIZE(tty)) { 948 case CS5: 949 config->bDataBits = TI_UART_5_DATA_BITS; 950 break; 951 case CS6: 952 config->bDataBits = TI_UART_6_DATA_BITS; 953 break; 954 case CS7: 955 config->bDataBits = TI_UART_7_DATA_BITS; 956 break; 957 default: 958 case CS8: 959 config->bDataBits = TI_UART_8_DATA_BITS; 960 break; 961 } 962 963 /* CMSPAR isn't supported by this driver */ 964 tty->termios.c_cflag &= ~CMSPAR; 965 966 if (C_PARENB(tty)) { 967 if (C_PARODD(tty)) { 968 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 969 config->bParity = TI_UART_ODD_PARITY; 970 } else { 971 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 972 config->bParity = TI_UART_EVEN_PARITY; 973 } 974 } else { 975 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 976 config->bParity = TI_UART_NO_PARITY; 977 } 978 979 if (C_CSTOPB(tty)) 980 config->bStopBits = TI_UART_2_STOP_BITS; 981 else 982 config->bStopBits = TI_UART_1_STOP_BITS; 983 984 if (C_CRTSCTS(tty)) { 985 /* RTS flow control must be off to drop RTS for baud rate B0 */ 986 if ((C_BAUD(tty)) != B0) 987 wflags |= TI_UART_ENABLE_RTS_IN; 988 wflags |= TI_UART_ENABLE_CTS_OUT; 989 } else { 990 ti_restart_read(tport, tty); 991 } 992 993 if (I_IXOFF(tty) || I_IXON(tty)) { 994 config->cXon = START_CHAR(tty); 995 config->cXoff = STOP_CHAR(tty); 996 997 if (I_IXOFF(tty)) 998 wflags |= TI_UART_ENABLE_X_IN; 999 else 1000 ti_restart_read(tport, tty); 1001 1002 if (I_IXON(tty)) 1003 wflags |= TI_UART_ENABLE_X_OUT; 1004 } 1005 1006 baud = tty_get_baud_rate(tty); 1007 if (!baud) 1008 baud = 9600; 1009 if (tport->tp_tdev->td_is_3410) 1010 wbaudrate = (923077 + baud/2) / baud; 1011 else 1012 wbaudrate = (461538 + baud/2) / baud; 1013 1014 /* FIXME: Should calculate resulting baud here and report it back */ 1015 if ((C_BAUD(tty)) != B0) 1016 tty_encode_baud_rate(tty, baud, baud); 1017 1018 dev_dbg(&port->dev, 1019 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 1020 __func__, baud, wbaudrate, wflags, 1021 config->bDataBits, config->bParity, config->bStopBits, 1022 config->cXon, config->cXoff, config->bUartMode); 1023 1024 config->wBaudRate = cpu_to_be16(wbaudrate); 1025 config->wFlags = cpu_to_be16(wflags); 1026 1027 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1028 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1029 sizeof(*config)); 1030 if (status) 1031 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1032 __func__, port_number, status); 1033 1034 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1035 mcr = tport->tp_shadow_mcr; 1036 /* if baud rate is B0, clear RTS and DTR */ 1037 if (C_BAUD(tty) == B0) 1038 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1039 status = ti_set_mcr(tport, mcr); 1040 if (status) 1041 dev_err(&port->dev, 1042 "%s - cannot set modem control on port %d, %d\n", 1043 __func__, port_number, status); 1044 1045 kfree(config); 1046 } 1047 1048 1049 static int ti_tiocmget(struct tty_struct *tty) 1050 { 1051 struct usb_serial_port *port = tty->driver_data; 1052 struct ti_port *tport = usb_get_serial_port_data(port); 1053 unsigned int result; 1054 unsigned int msr; 1055 unsigned int mcr; 1056 unsigned long flags; 1057 1058 spin_lock_irqsave(&tport->tp_lock, flags); 1059 msr = tport->tp_msr; 1060 mcr = tport->tp_shadow_mcr; 1061 spin_unlock_irqrestore(&tport->tp_lock, flags); 1062 1063 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1064 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1065 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1066 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1067 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1068 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1069 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1070 1071 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1072 1073 return result; 1074 } 1075 1076 1077 static int ti_tiocmset(struct tty_struct *tty, 1078 unsigned int set, unsigned int clear) 1079 { 1080 struct usb_serial_port *port = tty->driver_data; 1081 struct ti_port *tport = usb_get_serial_port_data(port); 1082 unsigned int mcr; 1083 unsigned long flags; 1084 1085 spin_lock_irqsave(&tport->tp_lock, flags); 1086 mcr = tport->tp_shadow_mcr; 1087 1088 if (set & TIOCM_RTS) 1089 mcr |= TI_MCR_RTS; 1090 if (set & TIOCM_DTR) 1091 mcr |= TI_MCR_DTR; 1092 if (set & TIOCM_LOOP) 1093 mcr |= TI_MCR_LOOP; 1094 1095 if (clear & TIOCM_RTS) 1096 mcr &= ~TI_MCR_RTS; 1097 if (clear & TIOCM_DTR) 1098 mcr &= ~TI_MCR_DTR; 1099 if (clear & TIOCM_LOOP) 1100 mcr &= ~TI_MCR_LOOP; 1101 spin_unlock_irqrestore(&tport->tp_lock, flags); 1102 1103 return ti_set_mcr(tport, mcr); 1104 } 1105 1106 1107 static void ti_break(struct tty_struct *tty, int break_state) 1108 { 1109 struct usb_serial_port *port = tty->driver_data; 1110 struct ti_port *tport = usb_get_serial_port_data(port); 1111 int status; 1112 1113 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1114 1115 status = ti_write_byte(port, tport->tp_tdev, 1116 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1117 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1118 1119 if (status) 1120 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1121 } 1122 1123 static int ti_get_port_from_code(unsigned char code) 1124 { 1125 return (code >> 4) - 3; 1126 } 1127 1128 static int ti_get_func_from_code(unsigned char code) 1129 { 1130 return code & 0x0f; 1131 } 1132 1133 static void ti_interrupt_callback(struct urb *urb) 1134 { 1135 struct ti_device *tdev = urb->context; 1136 struct usb_serial_port *port; 1137 struct usb_serial *serial = tdev->td_serial; 1138 struct ti_port *tport; 1139 struct device *dev = &urb->dev->dev; 1140 unsigned char *data = urb->transfer_buffer; 1141 int length = urb->actual_length; 1142 int port_number; 1143 int function; 1144 int status = urb->status; 1145 int retval; 1146 u8 msr; 1147 1148 switch (status) { 1149 case 0: 1150 break; 1151 case -ECONNRESET: 1152 case -ENOENT: 1153 case -ESHUTDOWN: 1154 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1155 return; 1156 default: 1157 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1158 goto exit; 1159 } 1160 1161 if (length != 2) { 1162 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1163 goto exit; 1164 } 1165 1166 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1167 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1168 goto exit; 1169 } 1170 1171 port_number = ti_get_port_from_code(data[0]); 1172 function = ti_get_func_from_code(data[0]); 1173 1174 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1175 __func__, port_number, function, data[1]); 1176 1177 if (port_number >= serial->num_ports) { 1178 dev_err(dev, "%s - bad port number, %d\n", 1179 __func__, port_number); 1180 goto exit; 1181 } 1182 1183 port = serial->port[port_number]; 1184 1185 tport = usb_get_serial_port_data(port); 1186 if (!tport) 1187 goto exit; 1188 1189 switch (function) { 1190 case TI_CODE_DATA_ERROR: 1191 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1192 __func__, port_number, data[1]); 1193 break; 1194 1195 case TI_CODE_MODEM_STATUS: 1196 msr = data[1]; 1197 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1198 ti_handle_new_msr(tport, msr); 1199 break; 1200 1201 default: 1202 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1203 __func__, data[1]); 1204 break; 1205 } 1206 1207 exit: 1208 retval = usb_submit_urb(urb, GFP_ATOMIC); 1209 if (retval) 1210 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1211 __func__, retval); 1212 } 1213 1214 1215 static void ti_bulk_in_callback(struct urb *urb) 1216 { 1217 struct ti_port *tport = urb->context; 1218 struct usb_serial_port *port = tport->tp_port; 1219 struct device *dev = &urb->dev->dev; 1220 int status = urb->status; 1221 int retval = 0; 1222 1223 switch (status) { 1224 case 0: 1225 break; 1226 case -ECONNRESET: 1227 case -ENOENT: 1228 case -ESHUTDOWN: 1229 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1230 return; 1231 default: 1232 dev_err(dev, "%s - nonzero urb status, %d\n", 1233 __func__, status); 1234 } 1235 1236 if (status == -EPIPE) 1237 goto exit; 1238 1239 if (status) { 1240 dev_err(dev, "%s - stopping read!\n", __func__); 1241 return; 1242 } 1243 1244 if (urb->actual_length) { 1245 usb_serial_debug_data(dev, __func__, urb->actual_length, 1246 urb->transfer_buffer); 1247 1248 if (!tport->tp_is_open) 1249 dev_dbg(dev, "%s - port closed, dropping data\n", 1250 __func__); 1251 else 1252 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1253 spin_lock(&tport->tp_lock); 1254 port->icount.rx += urb->actual_length; 1255 spin_unlock(&tport->tp_lock); 1256 } 1257 1258 exit: 1259 /* continue to read unless stopping */ 1260 spin_lock(&tport->tp_lock); 1261 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1262 retval = usb_submit_urb(urb, GFP_ATOMIC); 1263 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1264 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1265 1266 spin_unlock(&tport->tp_lock); 1267 if (retval) 1268 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1269 __func__, retval); 1270 } 1271 1272 1273 static void ti_bulk_out_callback(struct urb *urb) 1274 { 1275 struct ti_port *tport = urb->context; 1276 struct usb_serial_port *port = tport->tp_port; 1277 int status = urb->status; 1278 1279 tport->tp_write_urb_in_use = 0; 1280 1281 switch (status) { 1282 case 0: 1283 break; 1284 case -ECONNRESET: 1285 case -ENOENT: 1286 case -ESHUTDOWN: 1287 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1288 return; 1289 default: 1290 dev_err_console(port, "%s - nonzero urb status, %d\n", 1291 __func__, status); 1292 } 1293 1294 /* send any buffered data */ 1295 ti_send(tport); 1296 } 1297 1298 1299 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1300 int length) 1301 { 1302 int cnt; 1303 1304 do { 1305 cnt = tty_insert_flip_string(&port->port, data, length); 1306 if (cnt < length) { 1307 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1308 __func__, length - cnt); 1309 if (cnt == 0) 1310 break; 1311 } 1312 tty_flip_buffer_push(&port->port); 1313 data += cnt; 1314 length -= cnt; 1315 } while (length > 0); 1316 } 1317 1318 1319 static void ti_send(struct ti_port *tport) 1320 { 1321 int count, result; 1322 struct usb_serial_port *port = tport->tp_port; 1323 unsigned long flags; 1324 1325 spin_lock_irqsave(&tport->tp_lock, flags); 1326 1327 if (tport->tp_write_urb_in_use) 1328 goto unlock; 1329 1330 count = kfifo_out(&port->write_fifo, 1331 port->write_urb->transfer_buffer, 1332 port->bulk_out_size); 1333 1334 if (count == 0) 1335 goto unlock; 1336 1337 tport->tp_write_urb_in_use = 1; 1338 1339 spin_unlock_irqrestore(&tport->tp_lock, flags); 1340 1341 usb_serial_debug_data(&port->dev, __func__, count, 1342 port->write_urb->transfer_buffer); 1343 1344 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1345 usb_sndbulkpipe(port->serial->dev, 1346 port->bulk_out_endpointAddress), 1347 port->write_urb->transfer_buffer, count, 1348 ti_bulk_out_callback, tport); 1349 1350 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1351 if (result) { 1352 dev_err_console(port, "%s - submit write urb failed, %d\n", 1353 __func__, result); 1354 tport->tp_write_urb_in_use = 0; 1355 /* TODO: reschedule ti_send */ 1356 } else { 1357 spin_lock_irqsave(&tport->tp_lock, flags); 1358 port->icount.tx += count; 1359 spin_unlock_irqrestore(&tport->tp_lock, flags); 1360 } 1361 1362 /* more room in the buffer for new writes, wakeup */ 1363 tty_port_tty_wakeup(&port->port); 1364 1365 return; 1366 unlock: 1367 spin_unlock_irqrestore(&tport->tp_lock, flags); 1368 return; 1369 } 1370 1371 1372 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1373 { 1374 unsigned long flags; 1375 int status; 1376 1377 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1378 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1379 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1380 1381 spin_lock_irqsave(&tport->tp_lock, flags); 1382 if (!status) 1383 tport->tp_shadow_mcr = mcr; 1384 spin_unlock_irqrestore(&tport->tp_lock, flags); 1385 1386 return status; 1387 } 1388 1389 1390 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1391 { 1392 int size, status; 1393 struct ti_device *tdev = tport->tp_tdev; 1394 struct usb_serial_port *port = tport->tp_port; 1395 int port_number = port->port_number; 1396 struct ti_port_status *data; 1397 1398 size = sizeof(struct ti_port_status); 1399 data = kmalloc(size, GFP_KERNEL); 1400 if (!data) 1401 return -ENOMEM; 1402 1403 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1404 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1405 if (status) { 1406 dev_err(&port->dev, 1407 "%s - get port status command failed, %d\n", 1408 __func__, status); 1409 goto free_data; 1410 } 1411 1412 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1413 1414 *lsr = data->bLSR; 1415 1416 free_data: 1417 kfree(data); 1418 return status; 1419 } 1420 1421 1422 static int ti_get_serial_info(struct ti_port *tport, 1423 struct serial_struct __user *ret_arg) 1424 { 1425 struct usb_serial_port *port = tport->tp_port; 1426 struct serial_struct ret_serial; 1427 unsigned cwait; 1428 1429 if (!ret_arg) 1430 return -EFAULT; 1431 1432 cwait = port->port.closing_wait; 1433 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1434 cwait = jiffies_to_msecs(cwait) / 10; 1435 1436 memset(&ret_serial, 0, sizeof(ret_serial)); 1437 1438 ret_serial.type = PORT_16550A; 1439 ret_serial.line = port->minor; 1440 ret_serial.port = port->port_number; 1441 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); 1442 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1443 ret_serial.closing_wait = cwait; 1444 1445 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) 1446 return -EFAULT; 1447 1448 return 0; 1449 } 1450 1451 1452 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, 1453 struct serial_struct __user *new_arg) 1454 { 1455 struct serial_struct new_serial; 1456 unsigned cwait; 1457 1458 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) 1459 return -EFAULT; 1460 1461 cwait = new_serial.closing_wait; 1462 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1463 cwait = msecs_to_jiffies(10 * new_serial.closing_wait); 1464 1465 tport->tp_port->port.closing_wait = cwait; 1466 1467 return 0; 1468 } 1469 1470 1471 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1472 { 1473 struct async_icount *icount; 1474 struct tty_struct *tty; 1475 unsigned long flags; 1476 1477 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1478 1479 if (msr & TI_MSR_DELTA_MASK) { 1480 spin_lock_irqsave(&tport->tp_lock, flags); 1481 icount = &tport->tp_port->icount; 1482 if (msr & TI_MSR_DELTA_CTS) 1483 icount->cts++; 1484 if (msr & TI_MSR_DELTA_DSR) 1485 icount->dsr++; 1486 if (msr & TI_MSR_DELTA_CD) 1487 icount->dcd++; 1488 if (msr & TI_MSR_DELTA_RI) 1489 icount->rng++; 1490 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1491 spin_unlock_irqrestore(&tport->tp_lock, flags); 1492 } 1493 1494 tport->tp_msr = msr & TI_MSR_MASK; 1495 1496 /* handle CTS flow control */ 1497 tty = tty_port_tty_get(&tport->tp_port->port); 1498 if (tty && C_CRTSCTS(tty)) { 1499 if (msr & TI_MSR_CTS) 1500 tty_wakeup(tty); 1501 } 1502 tty_kref_put(tty); 1503 } 1504 1505 1506 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1507 { 1508 unsigned long flags; 1509 1510 spin_lock_irqsave(&tport->tp_lock, flags); 1511 1512 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1513 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1514 1515 spin_unlock_irqrestore(&tport->tp_lock, flags); 1516 } 1517 1518 1519 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1520 { 1521 struct urb *urb; 1522 int status = 0; 1523 unsigned long flags; 1524 1525 spin_lock_irqsave(&tport->tp_lock, flags); 1526 1527 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1528 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1529 urb = tport->tp_port->read_urb; 1530 spin_unlock_irqrestore(&tport->tp_lock, flags); 1531 urb->context = tport; 1532 status = usb_submit_urb(urb, GFP_KERNEL); 1533 } else { 1534 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1535 spin_unlock_irqrestore(&tport->tp_lock, flags); 1536 } 1537 1538 return status; 1539 } 1540 1541 1542 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1543 __u16 moduleid, __u16 value, __u8 *data, int size) 1544 { 1545 int status; 1546 1547 status = usb_control_msg(tdev->td_serial->dev, 1548 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1549 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1550 value, moduleid, data, size, 1000); 1551 1552 if (status == size) 1553 status = 0; 1554 1555 if (status > 0) 1556 status = -ECOMM; 1557 1558 return status; 1559 } 1560 1561 1562 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1563 __u16 moduleid, __u16 value, __u8 *data, int size) 1564 { 1565 int status; 1566 1567 status = usb_control_msg(tdev->td_serial->dev, 1568 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1569 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1570 value, moduleid, data, size, 1000); 1571 1572 if (status == size) 1573 status = 0; 1574 1575 if (status > 0) 1576 status = -ECOMM; 1577 1578 return status; 1579 } 1580 1581 1582 static int ti_write_byte(struct usb_serial_port *port, 1583 struct ti_device *tdev, unsigned long addr, 1584 u8 mask, u8 byte) 1585 { 1586 int status; 1587 unsigned int size; 1588 struct ti_write_data_bytes *data; 1589 1590 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1591 addr, mask, byte); 1592 1593 size = sizeof(struct ti_write_data_bytes) + 2; 1594 data = kmalloc(size, GFP_KERNEL); 1595 if (!data) 1596 return -ENOMEM; 1597 1598 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1599 data->bDataType = TI_RW_DATA_BYTE; 1600 data->bDataCounter = 1; 1601 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1602 data->wBaseAddrLo = cpu_to_be16(addr); 1603 data->bData[0] = mask; 1604 data->bData[1] = byte; 1605 1606 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1607 (__u8 *)data, size); 1608 1609 if (status < 0) 1610 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1611 1612 kfree(data); 1613 1614 return status; 1615 } 1616 1617 static int ti_do_download(struct usb_device *dev, int pipe, 1618 u8 *buffer, int size) 1619 { 1620 int pos; 1621 u8 cs = 0; 1622 int done; 1623 struct ti_firmware_header *header; 1624 int status = 0; 1625 int len; 1626 1627 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1628 cs = (u8)(cs + buffer[pos]); 1629 1630 header = (struct ti_firmware_header *)buffer; 1631 header->wLength = cpu_to_le16(size - sizeof(*header)); 1632 header->bCheckSum = cs; 1633 1634 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1635 for (pos = 0; pos < size; pos += done) { 1636 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1637 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1638 &done, 1000); 1639 if (status) 1640 break; 1641 } 1642 return status; 1643 } 1644 1645 static int ti_download_firmware(struct ti_device *tdev) 1646 { 1647 int status; 1648 int buffer_size; 1649 u8 *buffer; 1650 struct usb_device *dev = tdev->td_serial->dev; 1651 unsigned int pipe = usb_sndbulkpipe(dev, 1652 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1653 const struct firmware *fw_p; 1654 char buf[32]; 1655 1656 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1657 snprintf(buf, 1658 sizeof(buf), 1659 "moxa/moxa-%04x.fw", 1660 le16_to_cpu(dev->descriptor.idProduct)); 1661 1662 status = request_firmware(&fw_p, buf, &dev->dev); 1663 goto check_firmware; 1664 } 1665 1666 /* try ID specific firmware first, then try generic firmware */ 1667 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1668 le16_to_cpu(dev->descriptor.idVendor), 1669 le16_to_cpu(dev->descriptor.idProduct)); 1670 status = request_firmware(&fw_p, buf, &dev->dev); 1671 1672 if (status != 0) { 1673 buf[0] = '\0'; 1674 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1675 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1676 case MTS_CDMA_PRODUCT_ID: 1677 strcpy(buf, "mts_cdma.fw"); 1678 break; 1679 case MTS_GSM_PRODUCT_ID: 1680 strcpy(buf, "mts_gsm.fw"); 1681 break; 1682 case MTS_EDGE_PRODUCT_ID: 1683 strcpy(buf, "mts_edge.fw"); 1684 break; 1685 case MTS_MT9234MU_PRODUCT_ID: 1686 strcpy(buf, "mts_mt9234mu.fw"); 1687 break; 1688 case MTS_MT9234ZBA_PRODUCT_ID: 1689 strcpy(buf, "mts_mt9234zba.fw"); 1690 break; 1691 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1692 strcpy(buf, "mts_mt9234zba.fw"); 1693 break; } 1694 } 1695 if (buf[0] == '\0') { 1696 if (tdev->td_is_3410) 1697 strcpy(buf, "ti_3410.fw"); 1698 else 1699 strcpy(buf, "ti_5052.fw"); 1700 } 1701 status = request_firmware(&fw_p, buf, &dev->dev); 1702 } 1703 1704 check_firmware: 1705 if (status) { 1706 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1707 return -ENOENT; 1708 } 1709 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1710 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1711 release_firmware(fw_p); 1712 return -ENOENT; 1713 } 1714 1715 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1716 buffer = kmalloc(buffer_size, GFP_KERNEL); 1717 if (buffer) { 1718 memcpy(buffer, fw_p->data, fw_p->size); 1719 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1720 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1721 kfree(buffer); 1722 } else { 1723 status = -ENOMEM; 1724 } 1725 release_firmware(fw_p); 1726 if (status) { 1727 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1728 __func__, status); 1729 return status; 1730 } 1731 1732 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1733 1734 return 0; 1735 } 1736