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 .num_bulk_out = 1, 431 .attach = ti_startup, 432 .release = ti_release, 433 .port_probe = ti_port_probe, 434 .port_remove = ti_port_remove, 435 .open = ti_open, 436 .close = ti_close, 437 .write = ti_write, 438 .write_room = ti_write_room, 439 .chars_in_buffer = ti_chars_in_buffer, 440 .tx_empty = ti_tx_empty, 441 .throttle = ti_throttle, 442 .unthrottle = ti_unthrottle, 443 .ioctl = ti_ioctl, 444 .set_termios = ti_set_termios, 445 .tiocmget = ti_tiocmget, 446 .tiocmset = ti_tiocmset, 447 .tiocmiwait = usb_serial_generic_tiocmiwait, 448 .get_icount = usb_serial_generic_get_icount, 449 .break_ctl = ti_break, 450 .read_int_callback = ti_interrupt_callback, 451 .read_bulk_callback = ti_bulk_in_callback, 452 .write_bulk_callback = ti_bulk_out_callback, 453 }; 454 455 static struct usb_serial_driver ti_2port_device = { 456 .driver = { 457 .owner = THIS_MODULE, 458 .name = "ti_usb_3410_5052_2", 459 }, 460 .description = "TI USB 5052 2 port adapter", 461 .id_table = ti_id_table_5052, 462 .num_ports = 2, 463 .num_bulk_out = 1, 464 .attach = ti_startup, 465 .release = ti_release, 466 .port_probe = ti_port_probe, 467 .port_remove = ti_port_remove, 468 .open = ti_open, 469 .close = ti_close, 470 .write = ti_write, 471 .write_room = ti_write_room, 472 .chars_in_buffer = ti_chars_in_buffer, 473 .tx_empty = ti_tx_empty, 474 .throttle = ti_throttle, 475 .unthrottle = ti_unthrottle, 476 .ioctl = ti_ioctl, 477 .set_termios = ti_set_termios, 478 .tiocmget = ti_tiocmget, 479 .tiocmset = ti_tiocmset, 480 .tiocmiwait = usb_serial_generic_tiocmiwait, 481 .get_icount = usb_serial_generic_get_icount, 482 .break_ctl = ti_break, 483 .read_int_callback = ti_interrupt_callback, 484 .read_bulk_callback = ti_bulk_in_callback, 485 .write_bulk_callback = ti_bulk_out_callback, 486 }; 487 488 static struct usb_serial_driver * const serial_drivers[] = { 489 &ti_1port_device, &ti_2port_device, NULL 490 }; 491 492 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 493 MODULE_DESCRIPTION(TI_DRIVER_DESC); 494 MODULE_LICENSE("GPL"); 495 496 MODULE_FIRMWARE("ti_3410.fw"); 497 MODULE_FIRMWARE("ti_5052.fw"); 498 MODULE_FIRMWARE("mts_cdma.fw"); 499 MODULE_FIRMWARE("mts_gsm.fw"); 500 MODULE_FIRMWARE("mts_edge.fw"); 501 MODULE_FIRMWARE("mts_mt9234mu.fw"); 502 MODULE_FIRMWARE("mts_mt9234zba.fw"); 503 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 504 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 505 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 506 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 507 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 508 509 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 510 MODULE_PARM_DESC(closing_wait, 511 "Maximum wait for data to drain in close, in .01 secs, default is 4000"); 512 513 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 514 515 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 516 517 static int ti_startup(struct usb_serial *serial) 518 { 519 struct ti_device *tdev; 520 struct usb_device *dev = serial->dev; 521 struct usb_host_interface *cur_altsetting; 522 int num_endpoints; 523 u16 vid, pid; 524 int status; 525 526 dev_dbg(&dev->dev, 527 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 528 __func__, le16_to_cpu(dev->descriptor.idProduct), 529 dev->descriptor.bNumConfigurations, 530 dev->actconfig->desc.bConfigurationValue); 531 532 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 533 if (!tdev) 534 return -ENOMEM; 535 536 mutex_init(&tdev->td_open_close_lock); 537 tdev->td_serial = serial; 538 usb_set_serial_data(serial, tdev); 539 540 /* determine device type */ 541 if (serial->type == &ti_1port_device) 542 tdev->td_is_3410 = 1; 543 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 544 tdev->td_is_3410 ? "3410" : "5052"); 545 546 vid = le16_to_cpu(dev->descriptor.idVendor); 547 pid = le16_to_cpu(dev->descriptor.idProduct); 548 if (vid == MXU1_VENDOR_ID) { 549 switch (pid) { 550 case MXU1_1130_PRODUCT_ID: 551 case MXU1_1131_PRODUCT_ID: 552 tdev->td_rs485_only = true; 553 break; 554 } 555 } 556 557 cur_altsetting = serial->interface->cur_altsetting; 558 num_endpoints = cur_altsetting->desc.bNumEndpoints; 559 560 /* if we have only 1 configuration and 1 endpoint, download firmware */ 561 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 562 status = ti_download_firmware(tdev); 563 564 if (status != 0) 565 goto free_tdev; 566 567 /* 3410 must be reset, 5052 resets itself */ 568 if (tdev->td_is_3410) { 569 msleep_interruptible(100); 570 usb_reset_device(dev); 571 } 572 573 status = -ENODEV; 574 goto free_tdev; 575 } 576 577 /* the second configuration must be set */ 578 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 579 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 580 status = status ? status : -ENODEV; 581 goto free_tdev; 582 } 583 584 if (serial->num_bulk_in < serial->num_ports || 585 serial->num_bulk_out < serial->num_ports) { 586 dev_err(&serial->interface->dev, "missing endpoints\n"); 587 status = -ENODEV; 588 goto free_tdev; 589 } 590 591 return 0; 592 593 free_tdev: 594 kfree(tdev); 595 usb_set_serial_data(serial, NULL); 596 return status; 597 } 598 599 600 static void ti_release(struct usb_serial *serial) 601 { 602 struct ti_device *tdev = usb_get_serial_data(serial); 603 604 kfree(tdev); 605 } 606 607 static int ti_port_probe(struct usb_serial_port *port) 608 { 609 struct ti_port *tport; 610 611 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 612 if (!tport) 613 return -ENOMEM; 614 615 spin_lock_init(&tport->tp_lock); 616 if (port == port->serial->port[0]) 617 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 618 else 619 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 620 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); 621 tport->tp_port = port; 622 tport->tp_tdev = usb_get_serial_data(port->serial); 623 624 if (tport->tp_tdev->td_rs485_only) 625 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 626 else 627 tport->tp_uart_mode = TI_UART_232; 628 629 usb_set_serial_port_data(port, tport); 630 631 port->port.drain_delay = 3; 632 633 return 0; 634 } 635 636 static int ti_port_remove(struct usb_serial_port *port) 637 { 638 struct ti_port *tport; 639 640 tport = usb_get_serial_port_data(port); 641 kfree(tport); 642 643 return 0; 644 } 645 646 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 647 { 648 struct ti_port *tport = usb_get_serial_port_data(port); 649 struct ti_device *tdev; 650 struct usb_device *dev; 651 struct urb *urb; 652 int port_number; 653 int status; 654 u16 open_settings; 655 656 open_settings = (TI_PIPE_MODE_CONTINUOUS | 657 TI_PIPE_TIMEOUT_ENABLE | 658 (TI_TRANSFER_TIMEOUT << 2)); 659 660 dev = port->serial->dev; 661 tdev = tport->tp_tdev; 662 663 /* only one open on any port on a device at a time */ 664 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 665 return -ERESTARTSYS; 666 667 port_number = port->port_number; 668 669 tport->tp_msr = 0; 670 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 671 672 /* start interrupt urb the first time a port is opened on this device */ 673 if (tdev->td_open_port_count == 0) { 674 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 675 urb = tdev->td_serial->port[0]->interrupt_in_urb; 676 if (!urb) { 677 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 678 status = -EINVAL; 679 goto release_lock; 680 } 681 urb->context = tdev; 682 status = usb_submit_urb(urb, GFP_KERNEL); 683 if (status) { 684 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 685 goto release_lock; 686 } 687 } 688 689 if (tty) 690 ti_set_termios(tty, port, &tty->termios); 691 692 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 693 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 694 if (status) { 695 dev_err(&port->dev, "%s - cannot send open command, %d\n", 696 __func__, status); 697 goto unlink_int_urb; 698 } 699 700 status = ti_command_out_sync(tdev, TI_START_PORT, 701 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 702 if (status) { 703 dev_err(&port->dev, "%s - cannot send start command, %d\n", 704 __func__, status); 705 goto unlink_int_urb; 706 } 707 708 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 709 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); 710 if (status) { 711 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 712 __func__, status); 713 goto unlink_int_urb; 714 } 715 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 716 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); 717 if (status) { 718 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 719 __func__, status); 720 goto unlink_int_urb; 721 } 722 723 /* reset the data toggle on the bulk endpoints to work around bug in 724 * host controllers where things get out of sync some times */ 725 usb_clear_halt(dev, port->write_urb->pipe); 726 usb_clear_halt(dev, port->read_urb->pipe); 727 728 if (tty) 729 ti_set_termios(tty, port, &tty->termios); 730 731 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 732 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 733 if (status) { 734 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 735 __func__, status); 736 goto unlink_int_urb; 737 } 738 739 status = ti_command_out_sync(tdev, TI_START_PORT, 740 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 741 if (status) { 742 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 743 __func__, status); 744 goto unlink_int_urb; 745 } 746 747 /* start read urb */ 748 urb = port->read_urb; 749 if (!urb) { 750 dev_err(&port->dev, "%s - no read urb\n", __func__); 751 status = -EINVAL; 752 goto unlink_int_urb; 753 } 754 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 755 urb->context = tport; 756 status = usb_submit_urb(urb, GFP_KERNEL); 757 if (status) { 758 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 759 __func__, status); 760 goto unlink_int_urb; 761 } 762 763 tport->tp_is_open = 1; 764 ++tdev->td_open_port_count; 765 766 goto release_lock; 767 768 unlink_int_urb: 769 if (tdev->td_open_port_count == 0) 770 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 771 release_lock: 772 mutex_unlock(&tdev->td_open_close_lock); 773 return status; 774 } 775 776 777 static void ti_close(struct usb_serial_port *port) 778 { 779 struct ti_device *tdev; 780 struct ti_port *tport; 781 int port_number; 782 int status; 783 int do_unlock; 784 unsigned long flags; 785 786 tdev = usb_get_serial_data(port->serial); 787 tport = usb_get_serial_port_data(port); 788 789 tport->tp_is_open = 0; 790 791 usb_kill_urb(port->read_urb); 792 usb_kill_urb(port->write_urb); 793 tport->tp_write_urb_in_use = 0; 794 spin_lock_irqsave(&tport->tp_lock, flags); 795 kfifo_reset_out(&port->write_fifo); 796 spin_unlock_irqrestore(&tport->tp_lock, flags); 797 798 port_number = port->port_number; 799 800 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 801 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 802 if (status) 803 dev_err(&port->dev, 804 "%s - cannot send close port command, %d\n" 805 , __func__, status); 806 807 /* if mutex_lock is interrupted, continue anyway */ 808 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); 809 --tport->tp_tdev->td_open_port_count; 810 if (tport->tp_tdev->td_open_port_count <= 0) { 811 /* last port is closed, shut down interrupt urb */ 812 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 813 tport->tp_tdev->td_open_port_count = 0; 814 } 815 if (do_unlock) 816 mutex_unlock(&tdev->td_open_close_lock); 817 } 818 819 820 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 821 const unsigned char *data, int count) 822 { 823 struct ti_port *tport = usb_get_serial_port_data(port); 824 825 if (count == 0) { 826 return 0; 827 } 828 829 if (!tport->tp_is_open) 830 return -ENODEV; 831 832 count = kfifo_in_locked(&port->write_fifo, data, count, 833 &tport->tp_lock); 834 ti_send(tport); 835 836 return count; 837 } 838 839 840 static int ti_write_room(struct tty_struct *tty) 841 { 842 struct usb_serial_port *port = tty->driver_data; 843 struct ti_port *tport = usb_get_serial_port_data(port); 844 int room = 0; 845 unsigned long flags; 846 847 spin_lock_irqsave(&tport->tp_lock, flags); 848 room = kfifo_avail(&port->write_fifo); 849 spin_unlock_irqrestore(&tport->tp_lock, flags); 850 851 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 852 return room; 853 } 854 855 856 static int ti_chars_in_buffer(struct tty_struct *tty) 857 { 858 struct usb_serial_port *port = tty->driver_data; 859 struct ti_port *tport = usb_get_serial_port_data(port); 860 int chars = 0; 861 unsigned long flags; 862 863 spin_lock_irqsave(&tport->tp_lock, flags); 864 chars = kfifo_len(&port->write_fifo); 865 spin_unlock_irqrestore(&tport->tp_lock, flags); 866 867 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 868 return chars; 869 } 870 871 static bool ti_tx_empty(struct usb_serial_port *port) 872 { 873 struct ti_port *tport = usb_get_serial_port_data(port); 874 int ret; 875 u8 lsr; 876 877 ret = ti_get_lsr(tport, &lsr); 878 if (!ret && !(lsr & TI_LSR_TX_EMPTY)) 879 return false; 880 881 return true; 882 } 883 884 static void ti_throttle(struct tty_struct *tty) 885 { 886 struct usb_serial_port *port = tty->driver_data; 887 struct ti_port *tport = usb_get_serial_port_data(port); 888 889 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 890 ti_stop_read(tport, tty); 891 892 } 893 894 895 static void ti_unthrottle(struct tty_struct *tty) 896 { 897 struct usb_serial_port *port = tty->driver_data; 898 struct ti_port *tport = usb_get_serial_port_data(port); 899 int status; 900 901 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 902 status = ti_restart_read(tport, tty); 903 if (status) 904 dev_err(&port->dev, "%s - cannot restart read, %d\n", 905 __func__, status); 906 } 907 } 908 909 static int ti_ioctl(struct tty_struct *tty, 910 unsigned int cmd, unsigned long arg) 911 { 912 struct usb_serial_port *port = tty->driver_data; 913 struct ti_port *tport = usb_get_serial_port_data(port); 914 915 switch (cmd) { 916 case TIOCGSERIAL: 917 return ti_get_serial_info(tport, 918 (struct serial_struct __user *)arg); 919 case TIOCSSERIAL: 920 return ti_set_serial_info(tty, tport, 921 (struct serial_struct __user *)arg); 922 } 923 return -ENOIOCTLCMD; 924 } 925 926 927 static void ti_set_termios(struct tty_struct *tty, 928 struct usb_serial_port *port, struct ktermios *old_termios) 929 { 930 struct ti_port *tport = usb_get_serial_port_data(port); 931 struct ti_uart_config *config; 932 int baud; 933 int status; 934 int port_number = port->port_number; 935 unsigned int mcr; 936 u16 wbaudrate; 937 u16 wflags = 0; 938 939 config = kmalloc(sizeof(*config), GFP_KERNEL); 940 if (!config) 941 return; 942 943 /* these flags must be set */ 944 wflags |= TI_UART_ENABLE_MS_INTS; 945 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 946 config->bUartMode = tport->tp_uart_mode; 947 948 switch (C_CSIZE(tty)) { 949 case CS5: 950 config->bDataBits = TI_UART_5_DATA_BITS; 951 break; 952 case CS6: 953 config->bDataBits = TI_UART_6_DATA_BITS; 954 break; 955 case CS7: 956 config->bDataBits = TI_UART_7_DATA_BITS; 957 break; 958 default: 959 case CS8: 960 config->bDataBits = TI_UART_8_DATA_BITS; 961 break; 962 } 963 964 /* CMSPAR isn't supported by this driver */ 965 tty->termios.c_cflag &= ~CMSPAR; 966 967 if (C_PARENB(tty)) { 968 if (C_PARODD(tty)) { 969 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 970 config->bParity = TI_UART_ODD_PARITY; 971 } else { 972 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 973 config->bParity = TI_UART_EVEN_PARITY; 974 } 975 } else { 976 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 977 config->bParity = TI_UART_NO_PARITY; 978 } 979 980 if (C_CSTOPB(tty)) 981 config->bStopBits = TI_UART_2_STOP_BITS; 982 else 983 config->bStopBits = TI_UART_1_STOP_BITS; 984 985 if (C_CRTSCTS(tty)) { 986 /* RTS flow control must be off to drop RTS for baud rate B0 */ 987 if ((C_BAUD(tty)) != B0) 988 wflags |= TI_UART_ENABLE_RTS_IN; 989 wflags |= TI_UART_ENABLE_CTS_OUT; 990 } else { 991 ti_restart_read(tport, tty); 992 } 993 994 if (I_IXOFF(tty) || I_IXON(tty)) { 995 config->cXon = START_CHAR(tty); 996 config->cXoff = STOP_CHAR(tty); 997 998 if (I_IXOFF(tty)) 999 wflags |= TI_UART_ENABLE_X_IN; 1000 else 1001 ti_restart_read(tport, tty); 1002 1003 if (I_IXON(tty)) 1004 wflags |= TI_UART_ENABLE_X_OUT; 1005 } 1006 1007 baud = tty_get_baud_rate(tty); 1008 if (!baud) 1009 baud = 9600; 1010 if (tport->tp_tdev->td_is_3410) 1011 wbaudrate = (923077 + baud/2) / baud; 1012 else 1013 wbaudrate = (461538 + baud/2) / baud; 1014 1015 /* FIXME: Should calculate resulting baud here and report it back */ 1016 if ((C_BAUD(tty)) != B0) 1017 tty_encode_baud_rate(tty, baud, baud); 1018 1019 dev_dbg(&port->dev, 1020 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 1021 __func__, baud, wbaudrate, wflags, 1022 config->bDataBits, config->bParity, config->bStopBits, 1023 config->cXon, config->cXoff, config->bUartMode); 1024 1025 config->wBaudRate = cpu_to_be16(wbaudrate); 1026 config->wFlags = cpu_to_be16(wflags); 1027 1028 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1029 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1030 sizeof(*config)); 1031 if (status) 1032 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1033 __func__, port_number, status); 1034 1035 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1036 mcr = tport->tp_shadow_mcr; 1037 /* if baud rate is B0, clear RTS and DTR */ 1038 if (C_BAUD(tty) == B0) 1039 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1040 status = ti_set_mcr(tport, mcr); 1041 if (status) 1042 dev_err(&port->dev, 1043 "%s - cannot set modem control on port %d, %d\n", 1044 __func__, port_number, status); 1045 1046 kfree(config); 1047 } 1048 1049 1050 static int ti_tiocmget(struct tty_struct *tty) 1051 { 1052 struct usb_serial_port *port = tty->driver_data; 1053 struct ti_port *tport = usb_get_serial_port_data(port); 1054 unsigned int result; 1055 unsigned int msr; 1056 unsigned int mcr; 1057 unsigned long flags; 1058 1059 spin_lock_irqsave(&tport->tp_lock, flags); 1060 msr = tport->tp_msr; 1061 mcr = tport->tp_shadow_mcr; 1062 spin_unlock_irqrestore(&tport->tp_lock, flags); 1063 1064 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1065 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1066 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1067 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1068 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1069 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1070 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1071 1072 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1073 1074 return result; 1075 } 1076 1077 1078 static int ti_tiocmset(struct tty_struct *tty, 1079 unsigned int set, unsigned int clear) 1080 { 1081 struct usb_serial_port *port = tty->driver_data; 1082 struct ti_port *tport = usb_get_serial_port_data(port); 1083 unsigned int mcr; 1084 unsigned long flags; 1085 1086 spin_lock_irqsave(&tport->tp_lock, flags); 1087 mcr = tport->tp_shadow_mcr; 1088 1089 if (set & TIOCM_RTS) 1090 mcr |= TI_MCR_RTS; 1091 if (set & TIOCM_DTR) 1092 mcr |= TI_MCR_DTR; 1093 if (set & TIOCM_LOOP) 1094 mcr |= TI_MCR_LOOP; 1095 1096 if (clear & TIOCM_RTS) 1097 mcr &= ~TI_MCR_RTS; 1098 if (clear & TIOCM_DTR) 1099 mcr &= ~TI_MCR_DTR; 1100 if (clear & TIOCM_LOOP) 1101 mcr &= ~TI_MCR_LOOP; 1102 spin_unlock_irqrestore(&tport->tp_lock, flags); 1103 1104 return ti_set_mcr(tport, mcr); 1105 } 1106 1107 1108 static void ti_break(struct tty_struct *tty, int break_state) 1109 { 1110 struct usb_serial_port *port = tty->driver_data; 1111 struct ti_port *tport = usb_get_serial_port_data(port); 1112 int status; 1113 1114 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1115 1116 status = ti_write_byte(port, tport->tp_tdev, 1117 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1118 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1119 1120 if (status) 1121 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1122 } 1123 1124 static int ti_get_port_from_code(unsigned char code) 1125 { 1126 return (code >> 4) - 3; 1127 } 1128 1129 static int ti_get_func_from_code(unsigned char code) 1130 { 1131 return code & 0x0f; 1132 } 1133 1134 static void ti_interrupt_callback(struct urb *urb) 1135 { 1136 struct ti_device *tdev = urb->context; 1137 struct usb_serial_port *port; 1138 struct usb_serial *serial = tdev->td_serial; 1139 struct ti_port *tport; 1140 struct device *dev = &urb->dev->dev; 1141 unsigned char *data = urb->transfer_buffer; 1142 int length = urb->actual_length; 1143 int port_number; 1144 int function; 1145 int status = urb->status; 1146 int retval; 1147 u8 msr; 1148 1149 switch (status) { 1150 case 0: 1151 break; 1152 case -ECONNRESET: 1153 case -ENOENT: 1154 case -ESHUTDOWN: 1155 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1156 return; 1157 default: 1158 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1159 goto exit; 1160 } 1161 1162 if (length != 2) { 1163 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1164 goto exit; 1165 } 1166 1167 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1168 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1169 goto exit; 1170 } 1171 1172 port_number = ti_get_port_from_code(data[0]); 1173 function = ti_get_func_from_code(data[0]); 1174 1175 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1176 __func__, port_number, function, data[1]); 1177 1178 if (port_number >= serial->num_ports) { 1179 dev_err(dev, "%s - bad port number, %d\n", 1180 __func__, port_number); 1181 goto exit; 1182 } 1183 1184 port = serial->port[port_number]; 1185 1186 tport = usb_get_serial_port_data(port); 1187 if (!tport) 1188 goto exit; 1189 1190 switch (function) { 1191 case TI_CODE_DATA_ERROR: 1192 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1193 __func__, port_number, data[1]); 1194 break; 1195 1196 case TI_CODE_MODEM_STATUS: 1197 msr = data[1]; 1198 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1199 ti_handle_new_msr(tport, msr); 1200 break; 1201 1202 default: 1203 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1204 __func__, data[1]); 1205 break; 1206 } 1207 1208 exit: 1209 retval = usb_submit_urb(urb, GFP_ATOMIC); 1210 if (retval) 1211 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1212 __func__, retval); 1213 } 1214 1215 1216 static void ti_bulk_in_callback(struct urb *urb) 1217 { 1218 struct ti_port *tport = urb->context; 1219 struct usb_serial_port *port = tport->tp_port; 1220 struct device *dev = &urb->dev->dev; 1221 int status = urb->status; 1222 int retval = 0; 1223 1224 switch (status) { 1225 case 0: 1226 break; 1227 case -ECONNRESET: 1228 case -ENOENT: 1229 case -ESHUTDOWN: 1230 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1231 return; 1232 default: 1233 dev_err(dev, "%s - nonzero urb status, %d\n", 1234 __func__, status); 1235 } 1236 1237 if (status == -EPIPE) 1238 goto exit; 1239 1240 if (status) { 1241 dev_err(dev, "%s - stopping read!\n", __func__); 1242 return; 1243 } 1244 1245 if (urb->actual_length) { 1246 usb_serial_debug_data(dev, __func__, urb->actual_length, 1247 urb->transfer_buffer); 1248 1249 if (!tport->tp_is_open) 1250 dev_dbg(dev, "%s - port closed, dropping data\n", 1251 __func__); 1252 else 1253 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1254 spin_lock(&tport->tp_lock); 1255 port->icount.rx += urb->actual_length; 1256 spin_unlock(&tport->tp_lock); 1257 } 1258 1259 exit: 1260 /* continue to read unless stopping */ 1261 spin_lock(&tport->tp_lock); 1262 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1263 retval = usb_submit_urb(urb, GFP_ATOMIC); 1264 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1265 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1266 1267 spin_unlock(&tport->tp_lock); 1268 if (retval) 1269 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1270 __func__, retval); 1271 } 1272 1273 1274 static void ti_bulk_out_callback(struct urb *urb) 1275 { 1276 struct ti_port *tport = urb->context; 1277 struct usb_serial_port *port = tport->tp_port; 1278 int status = urb->status; 1279 1280 tport->tp_write_urb_in_use = 0; 1281 1282 switch (status) { 1283 case 0: 1284 break; 1285 case -ECONNRESET: 1286 case -ENOENT: 1287 case -ESHUTDOWN: 1288 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1289 return; 1290 default: 1291 dev_err_console(port, "%s - nonzero urb status, %d\n", 1292 __func__, status); 1293 } 1294 1295 /* send any buffered data */ 1296 ti_send(tport); 1297 } 1298 1299 1300 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1301 int length) 1302 { 1303 int cnt; 1304 1305 do { 1306 cnt = tty_insert_flip_string(&port->port, data, length); 1307 if (cnt < length) { 1308 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1309 __func__, length - cnt); 1310 if (cnt == 0) 1311 break; 1312 } 1313 tty_flip_buffer_push(&port->port); 1314 data += cnt; 1315 length -= cnt; 1316 } while (length > 0); 1317 } 1318 1319 1320 static void ti_send(struct ti_port *tport) 1321 { 1322 int count, result; 1323 struct usb_serial_port *port = tport->tp_port; 1324 unsigned long flags; 1325 1326 spin_lock_irqsave(&tport->tp_lock, flags); 1327 1328 if (tport->tp_write_urb_in_use) 1329 goto unlock; 1330 1331 count = kfifo_out(&port->write_fifo, 1332 port->write_urb->transfer_buffer, 1333 port->bulk_out_size); 1334 1335 if (count == 0) 1336 goto unlock; 1337 1338 tport->tp_write_urb_in_use = 1; 1339 1340 spin_unlock_irqrestore(&tport->tp_lock, flags); 1341 1342 usb_serial_debug_data(&port->dev, __func__, count, 1343 port->write_urb->transfer_buffer); 1344 1345 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1346 usb_sndbulkpipe(port->serial->dev, 1347 port->bulk_out_endpointAddress), 1348 port->write_urb->transfer_buffer, count, 1349 ti_bulk_out_callback, tport); 1350 1351 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1352 if (result) { 1353 dev_err_console(port, "%s - submit write urb failed, %d\n", 1354 __func__, result); 1355 tport->tp_write_urb_in_use = 0; 1356 /* TODO: reschedule ti_send */ 1357 } else { 1358 spin_lock_irqsave(&tport->tp_lock, flags); 1359 port->icount.tx += count; 1360 spin_unlock_irqrestore(&tport->tp_lock, flags); 1361 } 1362 1363 /* more room in the buffer for new writes, wakeup */ 1364 tty_port_tty_wakeup(&port->port); 1365 1366 return; 1367 unlock: 1368 spin_unlock_irqrestore(&tport->tp_lock, flags); 1369 return; 1370 } 1371 1372 1373 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1374 { 1375 unsigned long flags; 1376 int status; 1377 1378 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1379 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1380 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1381 1382 spin_lock_irqsave(&tport->tp_lock, flags); 1383 if (!status) 1384 tport->tp_shadow_mcr = mcr; 1385 spin_unlock_irqrestore(&tport->tp_lock, flags); 1386 1387 return status; 1388 } 1389 1390 1391 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1392 { 1393 int size, status; 1394 struct ti_device *tdev = tport->tp_tdev; 1395 struct usb_serial_port *port = tport->tp_port; 1396 int port_number = port->port_number; 1397 struct ti_port_status *data; 1398 1399 size = sizeof(struct ti_port_status); 1400 data = kmalloc(size, GFP_KERNEL); 1401 if (!data) 1402 return -ENOMEM; 1403 1404 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1405 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1406 if (status) { 1407 dev_err(&port->dev, 1408 "%s - get port status command failed, %d\n", 1409 __func__, status); 1410 goto free_data; 1411 } 1412 1413 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1414 1415 *lsr = data->bLSR; 1416 1417 free_data: 1418 kfree(data); 1419 return status; 1420 } 1421 1422 1423 static int ti_get_serial_info(struct ti_port *tport, 1424 struct serial_struct __user *ret_arg) 1425 { 1426 struct usb_serial_port *port = tport->tp_port; 1427 struct serial_struct ret_serial; 1428 unsigned cwait; 1429 1430 cwait = port->port.closing_wait; 1431 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1432 cwait = jiffies_to_msecs(cwait) / 10; 1433 1434 memset(&ret_serial, 0, sizeof(ret_serial)); 1435 1436 ret_serial.type = PORT_16550A; 1437 ret_serial.line = port->minor; 1438 ret_serial.port = port->port_number; 1439 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); 1440 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1441 ret_serial.closing_wait = cwait; 1442 1443 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) 1444 return -EFAULT; 1445 1446 return 0; 1447 } 1448 1449 1450 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, 1451 struct serial_struct __user *new_arg) 1452 { 1453 struct serial_struct new_serial; 1454 unsigned cwait; 1455 1456 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) 1457 return -EFAULT; 1458 1459 cwait = new_serial.closing_wait; 1460 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1461 cwait = msecs_to_jiffies(10 * new_serial.closing_wait); 1462 1463 tport->tp_port->port.closing_wait = cwait; 1464 1465 return 0; 1466 } 1467 1468 1469 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1470 { 1471 struct async_icount *icount; 1472 struct tty_struct *tty; 1473 unsigned long flags; 1474 1475 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1476 1477 if (msr & TI_MSR_DELTA_MASK) { 1478 spin_lock_irqsave(&tport->tp_lock, flags); 1479 icount = &tport->tp_port->icount; 1480 if (msr & TI_MSR_DELTA_CTS) 1481 icount->cts++; 1482 if (msr & TI_MSR_DELTA_DSR) 1483 icount->dsr++; 1484 if (msr & TI_MSR_DELTA_CD) 1485 icount->dcd++; 1486 if (msr & TI_MSR_DELTA_RI) 1487 icount->rng++; 1488 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1489 spin_unlock_irqrestore(&tport->tp_lock, flags); 1490 } 1491 1492 tport->tp_msr = msr & TI_MSR_MASK; 1493 1494 /* handle CTS flow control */ 1495 tty = tty_port_tty_get(&tport->tp_port->port); 1496 if (tty && C_CRTSCTS(tty)) { 1497 if (msr & TI_MSR_CTS) 1498 tty_wakeup(tty); 1499 } 1500 tty_kref_put(tty); 1501 } 1502 1503 1504 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1505 { 1506 unsigned long flags; 1507 1508 spin_lock_irqsave(&tport->tp_lock, flags); 1509 1510 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1511 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1512 1513 spin_unlock_irqrestore(&tport->tp_lock, flags); 1514 } 1515 1516 1517 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1518 { 1519 struct urb *urb; 1520 int status = 0; 1521 unsigned long flags; 1522 1523 spin_lock_irqsave(&tport->tp_lock, flags); 1524 1525 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1526 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1527 urb = tport->tp_port->read_urb; 1528 spin_unlock_irqrestore(&tport->tp_lock, flags); 1529 urb->context = tport; 1530 status = usb_submit_urb(urb, GFP_KERNEL); 1531 } else { 1532 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1533 spin_unlock_irqrestore(&tport->tp_lock, flags); 1534 } 1535 1536 return status; 1537 } 1538 1539 1540 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1541 __u16 moduleid, __u16 value, __u8 *data, int size) 1542 { 1543 int status; 1544 1545 status = usb_control_msg(tdev->td_serial->dev, 1546 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1547 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1548 value, moduleid, data, size, 1000); 1549 1550 if (status < 0) 1551 return status; 1552 1553 return 0; 1554 } 1555 1556 1557 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1558 __u16 moduleid, __u16 value, __u8 *data, int size) 1559 { 1560 int status; 1561 1562 status = usb_control_msg(tdev->td_serial->dev, 1563 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1564 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1565 value, moduleid, data, size, 1000); 1566 1567 if (status == size) 1568 status = 0; 1569 else if (status >= 0) 1570 status = -ECOMM; 1571 1572 return status; 1573 } 1574 1575 1576 static int ti_write_byte(struct usb_serial_port *port, 1577 struct ti_device *tdev, unsigned long addr, 1578 u8 mask, u8 byte) 1579 { 1580 int status; 1581 unsigned int size; 1582 struct ti_write_data_bytes *data; 1583 1584 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1585 addr, mask, byte); 1586 1587 size = sizeof(struct ti_write_data_bytes) + 2; 1588 data = kmalloc(size, GFP_KERNEL); 1589 if (!data) 1590 return -ENOMEM; 1591 1592 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1593 data->bDataType = TI_RW_DATA_BYTE; 1594 data->bDataCounter = 1; 1595 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1596 data->wBaseAddrLo = cpu_to_be16(addr); 1597 data->bData[0] = mask; 1598 data->bData[1] = byte; 1599 1600 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1601 (__u8 *)data, size); 1602 1603 if (status < 0) 1604 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1605 1606 kfree(data); 1607 1608 return status; 1609 } 1610 1611 static int ti_do_download(struct usb_device *dev, int pipe, 1612 u8 *buffer, int size) 1613 { 1614 int pos; 1615 u8 cs = 0; 1616 int done; 1617 struct ti_firmware_header *header; 1618 int status = 0; 1619 int len; 1620 1621 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1622 cs = (u8)(cs + buffer[pos]); 1623 1624 header = (struct ti_firmware_header *)buffer; 1625 header->wLength = cpu_to_le16(size - sizeof(*header)); 1626 header->bCheckSum = cs; 1627 1628 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1629 for (pos = 0; pos < size; pos += done) { 1630 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1631 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1632 &done, 1000); 1633 if (status) 1634 break; 1635 } 1636 return status; 1637 } 1638 1639 static int ti_download_firmware(struct ti_device *tdev) 1640 { 1641 int status; 1642 int buffer_size; 1643 u8 *buffer; 1644 struct usb_device *dev = tdev->td_serial->dev; 1645 unsigned int pipe = usb_sndbulkpipe(dev, 1646 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1647 const struct firmware *fw_p; 1648 char buf[32]; 1649 1650 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1651 snprintf(buf, 1652 sizeof(buf), 1653 "moxa/moxa-%04x.fw", 1654 le16_to_cpu(dev->descriptor.idProduct)); 1655 1656 status = request_firmware(&fw_p, buf, &dev->dev); 1657 goto check_firmware; 1658 } 1659 1660 /* try ID specific firmware first, then try generic firmware */ 1661 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1662 le16_to_cpu(dev->descriptor.idVendor), 1663 le16_to_cpu(dev->descriptor.idProduct)); 1664 status = request_firmware(&fw_p, buf, &dev->dev); 1665 1666 if (status != 0) { 1667 buf[0] = '\0'; 1668 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1669 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1670 case MTS_CDMA_PRODUCT_ID: 1671 strcpy(buf, "mts_cdma.fw"); 1672 break; 1673 case MTS_GSM_PRODUCT_ID: 1674 strcpy(buf, "mts_gsm.fw"); 1675 break; 1676 case MTS_EDGE_PRODUCT_ID: 1677 strcpy(buf, "mts_edge.fw"); 1678 break; 1679 case MTS_MT9234MU_PRODUCT_ID: 1680 strcpy(buf, "mts_mt9234mu.fw"); 1681 break; 1682 case MTS_MT9234ZBA_PRODUCT_ID: 1683 strcpy(buf, "mts_mt9234zba.fw"); 1684 break; 1685 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1686 strcpy(buf, "mts_mt9234zba.fw"); 1687 break; } 1688 } 1689 if (buf[0] == '\0') { 1690 if (tdev->td_is_3410) 1691 strcpy(buf, "ti_3410.fw"); 1692 else 1693 strcpy(buf, "ti_5052.fw"); 1694 } 1695 status = request_firmware(&fw_p, buf, &dev->dev); 1696 } 1697 1698 check_firmware: 1699 if (status) { 1700 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1701 return -ENOENT; 1702 } 1703 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1704 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1705 release_firmware(fw_p); 1706 return -ENOENT; 1707 } 1708 1709 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1710 buffer = kmalloc(buffer_size, GFP_KERNEL); 1711 if (buffer) { 1712 memcpy(buffer, fw_p->data, fw_p->size); 1713 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1714 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1715 kfree(buffer); 1716 } else { 1717 status = -ENOMEM; 1718 } 1719 release_firmware(fw_p); 1720 if (status) { 1721 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1722 __func__, status); 1723 return status; 1724 } 1725 1726 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1727 1728 return 0; 1729 } 1730