1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * TI 3410/5052 USB Serial Driver 4 * 5 * Copyright (C) 2004 Texas Instruments 6 * 7 * This driver is based on the Linux io_ti driver, which is 8 * Copyright (C) 2000-2002 Inside Out Networks 9 * Copyright (C) 2001-2002 Greg Kroah-Hartman 10 * 11 * For questions or problems with this driver, contact Texas Instruments 12 * technical support, or Al Borchers <alborchers@steinerpoint.com>, or 13 * Peter Berger <pberger@brimson.com>. 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/errno.h> 18 #include <linux/firmware.h> 19 #include <linux/slab.h> 20 #include <linux/tty.h> 21 #include <linux/tty_driver.h> 22 #include <linux/tty_flip.h> 23 #include <linux/module.h> 24 #include <linux/spinlock.h> 25 #include <linux/ioctl.h> 26 #include <linux/serial.h> 27 #include <linux/kfifo.h> 28 #include <linux/mutex.h> 29 #include <linux/uaccess.h> 30 #include <linux/usb.h> 31 #include <linux/usb/serial.h> 32 33 /* Configuration ids */ 34 #define TI_BOOT_CONFIG 1 35 #define TI_ACTIVE_CONFIG 2 36 37 /* Vendor and product ids */ 38 #define TI_VENDOR_ID 0x0451 39 #define IBM_VENDOR_ID 0x04b3 40 #define TI_3410_PRODUCT_ID 0x3410 41 #define IBM_4543_PRODUCT_ID 0x4543 42 #define IBM_454B_PRODUCT_ID 0x454b 43 #define IBM_454C_PRODUCT_ID 0x454c 44 #define TI_3410_EZ430_ID 0xF430 /* TI ez430 development tool */ 45 #define TI_5052_BOOT_PRODUCT_ID 0x5052 /* no EEPROM, no firmware */ 46 #define TI_5152_BOOT_PRODUCT_ID 0x5152 /* no EEPROM, no firmware */ 47 #define TI_5052_EEPROM_PRODUCT_ID 0x505A /* EEPROM, no firmware */ 48 #define TI_5052_FIRMWARE_PRODUCT_ID 0x505F /* firmware is running */ 49 #define FRI2_PRODUCT_ID 0x5053 /* Fish River Island II */ 50 51 /* Multi-Tech vendor and product ids */ 52 #define MTS_VENDOR_ID 0x06E0 53 #define MTS_GSM_NO_FW_PRODUCT_ID 0xF108 54 #define MTS_CDMA_NO_FW_PRODUCT_ID 0xF109 55 #define MTS_CDMA_PRODUCT_ID 0xF110 56 #define MTS_GSM_PRODUCT_ID 0xF111 57 #define MTS_EDGE_PRODUCT_ID 0xF112 58 #define MTS_MT9234MU_PRODUCT_ID 0xF114 59 #define MTS_MT9234ZBA_PRODUCT_ID 0xF115 60 #define MTS_MT9234ZBAOLD_PRODUCT_ID 0x0319 61 62 /* Abbott Diabetics vendor and product ids */ 63 #define ABBOTT_VENDOR_ID 0x1a61 64 #define ABBOTT_STEREO_PLUG_ID 0x3410 65 #define ABBOTT_PRODUCT_ID ABBOTT_STEREO_PLUG_ID 66 #define ABBOTT_STRIP_PORT_ID 0x3420 67 68 /* Honeywell vendor and product IDs */ 69 #define HONEYWELL_VENDOR_ID 0x10ac 70 #define HONEYWELL_HGI80_PRODUCT_ID 0x0102 /* Honeywell HGI80 */ 71 72 /* Moxa UPORT 11x0 vendor and product IDs */ 73 #define MXU1_VENDOR_ID 0x110a 74 #define MXU1_1110_PRODUCT_ID 0x1110 75 #define MXU1_1130_PRODUCT_ID 0x1130 76 #define MXU1_1150_PRODUCT_ID 0x1150 77 #define MXU1_1151_PRODUCT_ID 0x1151 78 #define MXU1_1131_PRODUCT_ID 0x1131 79 80 /* Commands */ 81 #define TI_GET_VERSION 0x01 82 #define TI_GET_PORT_STATUS 0x02 83 #define TI_GET_PORT_DEV_INFO 0x03 84 #define TI_GET_CONFIG 0x04 85 #define TI_SET_CONFIG 0x05 86 #define TI_OPEN_PORT 0x06 87 #define TI_CLOSE_PORT 0x07 88 #define TI_START_PORT 0x08 89 #define TI_STOP_PORT 0x09 90 #define TI_TEST_PORT 0x0A 91 #define TI_PURGE_PORT 0x0B 92 #define TI_RESET_EXT_DEVICE 0x0C 93 #define TI_WRITE_DATA 0x80 94 #define TI_READ_DATA 0x81 95 #define TI_REQ_TYPE_CLASS 0x82 96 97 /* Module identifiers */ 98 #define TI_I2C_PORT 0x01 99 #define TI_IEEE1284_PORT 0x02 100 #define TI_UART1_PORT 0x03 101 #define TI_UART2_PORT 0x04 102 #define TI_RAM_PORT 0x05 103 104 /* Modem status */ 105 #define TI_MSR_DELTA_CTS 0x01 106 #define TI_MSR_DELTA_DSR 0x02 107 #define TI_MSR_DELTA_RI 0x04 108 #define TI_MSR_DELTA_CD 0x08 109 #define TI_MSR_CTS 0x10 110 #define TI_MSR_DSR 0x20 111 #define TI_MSR_RI 0x40 112 #define TI_MSR_CD 0x80 113 #define TI_MSR_DELTA_MASK 0x0F 114 #define TI_MSR_MASK 0xF0 115 116 /* Line status */ 117 #define TI_LSR_OVERRUN_ERROR 0x01 118 #define TI_LSR_PARITY_ERROR 0x02 119 #define TI_LSR_FRAMING_ERROR 0x04 120 #define TI_LSR_BREAK 0x08 121 #define TI_LSR_ERROR 0x0F 122 #define TI_LSR_RX_FULL 0x10 123 #define TI_LSR_TX_EMPTY 0x20 124 125 /* Line control */ 126 #define TI_LCR_BREAK 0x40 127 128 /* Modem control */ 129 #define TI_MCR_LOOP 0x04 130 #define TI_MCR_DTR 0x10 131 #define TI_MCR_RTS 0x20 132 133 /* Mask settings */ 134 #define TI_UART_ENABLE_RTS_IN 0x0001 135 #define TI_UART_DISABLE_RTS 0x0002 136 #define TI_UART_ENABLE_PARITY_CHECKING 0x0008 137 #define TI_UART_ENABLE_DSR_OUT 0x0010 138 #define TI_UART_ENABLE_CTS_OUT 0x0020 139 #define TI_UART_ENABLE_X_OUT 0x0040 140 #define TI_UART_ENABLE_XA_OUT 0x0080 141 #define TI_UART_ENABLE_X_IN 0x0100 142 #define TI_UART_ENABLE_DTR_IN 0x0800 143 #define TI_UART_DISABLE_DTR 0x1000 144 #define TI_UART_ENABLE_MS_INTS 0x2000 145 #define TI_UART_ENABLE_AUTO_START_DMA 0x4000 146 147 /* Parity */ 148 #define TI_UART_NO_PARITY 0x00 149 #define TI_UART_ODD_PARITY 0x01 150 #define TI_UART_EVEN_PARITY 0x02 151 #define TI_UART_MARK_PARITY 0x03 152 #define TI_UART_SPACE_PARITY 0x04 153 154 /* Stop bits */ 155 #define TI_UART_1_STOP_BITS 0x00 156 #define TI_UART_1_5_STOP_BITS 0x01 157 #define TI_UART_2_STOP_BITS 0x02 158 159 /* Bits per character */ 160 #define TI_UART_5_DATA_BITS 0x00 161 #define TI_UART_6_DATA_BITS 0x01 162 #define TI_UART_7_DATA_BITS 0x02 163 #define TI_UART_8_DATA_BITS 0x03 164 165 /* 232/485 modes */ 166 #define TI_UART_232 0x00 167 #define TI_UART_485_RECEIVER_DISABLED 0x01 168 #define TI_UART_485_RECEIVER_ENABLED 0x02 169 170 /* Pipe transfer mode and timeout */ 171 #define TI_PIPE_MODE_CONTINUOUS 0x01 172 #define TI_PIPE_MODE_MASK 0x03 173 #define TI_PIPE_TIMEOUT_MASK 0x7C 174 #define TI_PIPE_TIMEOUT_ENABLE 0x80 175 176 /* Config struct */ 177 struct ti_uart_config { 178 __be16 wBaudRate; 179 __be16 wFlags; 180 u8 bDataBits; 181 u8 bParity; 182 u8 bStopBits; 183 char cXon; 184 char cXoff; 185 u8 bUartMode; 186 } __packed; 187 188 /* Get port status */ 189 struct ti_port_status { 190 u8 bCmdCode; 191 u8 bModuleId; 192 u8 bErrorCode; 193 u8 bMSR; 194 u8 bLSR; 195 } __packed; 196 197 /* Purge modes */ 198 #define TI_PURGE_OUTPUT 0x00 199 #define TI_PURGE_INPUT 0x80 200 201 /* Read/Write data */ 202 #define TI_RW_DATA_ADDR_SFR 0x10 203 #define TI_RW_DATA_ADDR_IDATA 0x20 204 #define TI_RW_DATA_ADDR_XDATA 0x30 205 #define TI_RW_DATA_ADDR_CODE 0x40 206 #define TI_RW_DATA_ADDR_GPIO 0x50 207 #define TI_RW_DATA_ADDR_I2C 0x60 208 #define TI_RW_DATA_ADDR_FLASH 0x70 209 #define TI_RW_DATA_ADDR_DSP 0x80 210 211 #define TI_RW_DATA_UNSPECIFIED 0x00 212 #define TI_RW_DATA_BYTE 0x01 213 #define TI_RW_DATA_WORD 0x02 214 #define TI_RW_DATA_DOUBLE_WORD 0x04 215 216 struct ti_write_data_bytes { 217 u8 bAddrType; 218 u8 bDataType; 219 u8 bDataCounter; 220 __be16 wBaseAddrHi; 221 __be16 wBaseAddrLo; 222 u8 bData[]; 223 } __packed; 224 225 struct ti_read_data_request { 226 __u8 bAddrType; 227 __u8 bDataType; 228 __u8 bDataCounter; 229 __be16 wBaseAddrHi; 230 __be16 wBaseAddrLo; 231 } __packed; 232 233 struct ti_read_data_bytes { 234 __u8 bCmdCode; 235 __u8 bModuleId; 236 __u8 bErrorCode; 237 __u8 bData[]; 238 } __packed; 239 240 /* Interrupt struct */ 241 struct ti_interrupt { 242 __u8 bICode; 243 __u8 bIInfo; 244 } __packed; 245 246 /* Interrupt codes */ 247 #define TI_CODE_HARDWARE_ERROR 0xFF 248 #define TI_CODE_DATA_ERROR 0x03 249 #define TI_CODE_MODEM_STATUS 0x04 250 251 /* Download firmware max packet size */ 252 #define TI_DOWNLOAD_MAX_PACKET_SIZE 64 253 254 /* Firmware image header */ 255 struct ti_firmware_header { 256 __le16 wLength; 257 u8 bCheckSum; 258 } __packed; 259 260 /* UART addresses */ 261 #define TI_UART1_BASE_ADDR 0xFFA0 /* UART 1 base address */ 262 #define TI_UART2_BASE_ADDR 0xFFB0 /* UART 2 base address */ 263 #define TI_UART_OFFSET_LCR 0x0002 /* UART MCR register offset */ 264 #define TI_UART_OFFSET_MCR 0x0004 /* UART MCR register offset */ 265 266 #define TI_DRIVER_AUTHOR "Al Borchers <alborchers@steinerpoint.com>" 267 #define TI_DRIVER_DESC "TI USB 3410/5052 Serial Driver" 268 269 #define TI_FIRMWARE_BUF_SIZE 16284 270 271 #define TI_TRANSFER_TIMEOUT 2 272 273 #define TI_DEFAULT_CLOSING_WAIT 4000 /* in .01 secs */ 274 275 /* read urb states */ 276 #define TI_READ_URB_RUNNING 0 277 #define TI_READ_URB_STOPPING 1 278 #define TI_READ_URB_STOPPED 2 279 280 #define TI_EXTRA_VID_PID_COUNT 5 281 282 struct ti_port { 283 int tp_is_open; 284 u8 tp_msr; 285 u8 tp_shadow_mcr; 286 u8 tp_uart_mode; /* 232 or 485 modes */ 287 unsigned int tp_uart_base_addr; 288 struct ti_device *tp_tdev; 289 struct usb_serial_port *tp_port; 290 spinlock_t tp_lock; 291 int tp_read_urb_state; 292 int tp_write_urb_in_use; 293 }; 294 295 struct ti_device { 296 struct mutex td_open_close_lock; 297 int td_open_port_count; 298 struct usb_serial *td_serial; 299 int td_is_3410; 300 bool td_rs485_only; 301 }; 302 303 static int ti_startup(struct usb_serial *serial); 304 static void ti_release(struct usb_serial *serial); 305 static int ti_port_probe(struct usb_serial_port *port); 306 static int ti_port_remove(struct usb_serial_port *port); 307 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port); 308 static void ti_close(struct usb_serial_port *port); 309 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 310 const unsigned char *data, int count); 311 static int ti_write_room(struct tty_struct *tty); 312 static int ti_chars_in_buffer(struct tty_struct *tty); 313 static bool ti_tx_empty(struct usb_serial_port *port); 314 static void ti_throttle(struct tty_struct *tty); 315 static void ti_unthrottle(struct tty_struct *tty); 316 static void ti_set_termios(struct tty_struct *tty, 317 struct usb_serial_port *port, struct ktermios *old_termios); 318 static int ti_tiocmget(struct tty_struct *tty); 319 static int ti_tiocmset(struct tty_struct *tty, 320 unsigned int set, unsigned int clear); 321 static void ti_break(struct tty_struct *tty, int break_state); 322 static void ti_interrupt_callback(struct urb *urb); 323 static void ti_bulk_in_callback(struct urb *urb); 324 static void ti_bulk_out_callback(struct urb *urb); 325 326 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 327 int length); 328 static void ti_send(struct ti_port *tport); 329 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 330 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 331 static int ti_get_serial_info(struct tty_struct *tty, 332 struct serial_struct *ss); 333 static int ti_set_serial_info(struct tty_struct *tty, 334 struct serial_struct *ss); 335 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 336 337 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 338 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 339 340 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 341 __u16 moduleid, __u16 value, __u8 *data, int size); 342 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 343 __u16 moduleid, __u16 value, __u8 *data, int size); 344 345 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 346 unsigned long addr, u8 mask, u8 byte); 347 348 static int ti_download_firmware(struct ti_device *tdev); 349 350 static int closing_wait = TI_DEFAULT_CLOSING_WAIT; 351 352 static const struct usb_device_id ti_id_table_3410[] = { 353 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 354 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 355 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 356 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 357 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 358 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 359 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 360 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 361 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 362 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 363 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 364 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 365 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 366 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 367 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 368 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 369 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 370 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 371 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 374 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 375 { } /* terminator */ 376 }; 377 378 static const struct usb_device_id ti_id_table_5052[] = { 379 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 380 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 382 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 383 { } 384 }; 385 386 static const struct usb_device_id ti_id_table_combined[] = { 387 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 388 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 389 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 390 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 397 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 398 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 400 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 401 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 402 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 403 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 404 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 405 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 406 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 407 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 408 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 409 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 413 { } /* terminator */ 414 }; 415 416 static struct usb_serial_driver ti_1port_device = { 417 .driver = { 418 .owner = THIS_MODULE, 419 .name = "ti_usb_3410_5052_1", 420 }, 421 .description = "TI USB 3410 1 port adapter", 422 .id_table = ti_id_table_3410, 423 .num_ports = 1, 424 .num_bulk_out = 1, 425 .attach = ti_startup, 426 .release = ti_release, 427 .port_probe = ti_port_probe, 428 .port_remove = ti_port_remove, 429 .open = ti_open, 430 .close = ti_close, 431 .write = ti_write, 432 .write_room = ti_write_room, 433 .chars_in_buffer = ti_chars_in_buffer, 434 .tx_empty = ti_tx_empty, 435 .throttle = ti_throttle, 436 .unthrottle = ti_unthrottle, 437 .get_serial = ti_get_serial_info, 438 .set_serial = ti_set_serial_info, 439 .set_termios = ti_set_termios, 440 .tiocmget = ti_tiocmget, 441 .tiocmset = ti_tiocmset, 442 .tiocmiwait = usb_serial_generic_tiocmiwait, 443 .get_icount = usb_serial_generic_get_icount, 444 .break_ctl = ti_break, 445 .read_int_callback = ti_interrupt_callback, 446 .read_bulk_callback = ti_bulk_in_callback, 447 .write_bulk_callback = ti_bulk_out_callback, 448 }; 449 450 static struct usb_serial_driver ti_2port_device = { 451 .driver = { 452 .owner = THIS_MODULE, 453 .name = "ti_usb_3410_5052_2", 454 }, 455 .description = "TI USB 5052 2 port adapter", 456 .id_table = ti_id_table_5052, 457 .num_ports = 2, 458 .num_bulk_out = 1, 459 .attach = ti_startup, 460 .release = ti_release, 461 .port_probe = ti_port_probe, 462 .port_remove = ti_port_remove, 463 .open = ti_open, 464 .close = ti_close, 465 .write = ti_write, 466 .write_room = ti_write_room, 467 .chars_in_buffer = ti_chars_in_buffer, 468 .tx_empty = ti_tx_empty, 469 .throttle = ti_throttle, 470 .unthrottle = ti_unthrottle, 471 .get_serial = ti_get_serial_info, 472 .set_serial = ti_set_serial_info, 473 .set_termios = ti_set_termios, 474 .tiocmget = ti_tiocmget, 475 .tiocmset = ti_tiocmset, 476 .tiocmiwait = usb_serial_generic_tiocmiwait, 477 .get_icount = usb_serial_generic_get_icount, 478 .break_ctl = ti_break, 479 .read_int_callback = ti_interrupt_callback, 480 .read_bulk_callback = ti_bulk_in_callback, 481 .write_bulk_callback = ti_bulk_out_callback, 482 }; 483 484 static struct usb_serial_driver * const serial_drivers[] = { 485 &ti_1port_device, &ti_2port_device, NULL 486 }; 487 488 MODULE_AUTHOR(TI_DRIVER_AUTHOR); 489 MODULE_DESCRIPTION(TI_DRIVER_DESC); 490 MODULE_LICENSE("GPL"); 491 492 MODULE_FIRMWARE("ti_3410.fw"); 493 MODULE_FIRMWARE("ti_5052.fw"); 494 MODULE_FIRMWARE("mts_cdma.fw"); 495 MODULE_FIRMWARE("mts_gsm.fw"); 496 MODULE_FIRMWARE("mts_edge.fw"); 497 MODULE_FIRMWARE("mts_mt9234mu.fw"); 498 MODULE_FIRMWARE("mts_mt9234zba.fw"); 499 MODULE_FIRMWARE("moxa/moxa-1110.fw"); 500 MODULE_FIRMWARE("moxa/moxa-1130.fw"); 501 MODULE_FIRMWARE("moxa/moxa-1131.fw"); 502 MODULE_FIRMWARE("moxa/moxa-1150.fw"); 503 MODULE_FIRMWARE("moxa/moxa-1151.fw"); 504 505 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 506 MODULE_PARM_DESC(closing_wait, 507 "Maximum wait for data to drain in close, in .01 secs, default is 4000"); 508 509 MODULE_DEVICE_TABLE(usb, ti_id_table_combined); 510 511 module_usb_serial_driver(serial_drivers, ti_id_table_combined); 512 513 static int ti_startup(struct usb_serial *serial) 514 { 515 struct ti_device *tdev; 516 struct usb_device *dev = serial->dev; 517 struct usb_host_interface *cur_altsetting; 518 int num_endpoints; 519 u16 vid, pid; 520 int status; 521 522 dev_dbg(&dev->dev, 523 "%s - product 0x%4X, num configurations %d, configuration value %d\n", 524 __func__, le16_to_cpu(dev->descriptor.idProduct), 525 dev->descriptor.bNumConfigurations, 526 dev->actconfig->desc.bConfigurationValue); 527 528 tdev = kzalloc(sizeof(struct ti_device), GFP_KERNEL); 529 if (!tdev) 530 return -ENOMEM; 531 532 mutex_init(&tdev->td_open_close_lock); 533 tdev->td_serial = serial; 534 usb_set_serial_data(serial, tdev); 535 536 /* determine device type */ 537 if (serial->type == &ti_1port_device) 538 tdev->td_is_3410 = 1; 539 dev_dbg(&dev->dev, "%s - device type is %s\n", __func__, 540 tdev->td_is_3410 ? "3410" : "5052"); 541 542 vid = le16_to_cpu(dev->descriptor.idVendor); 543 pid = le16_to_cpu(dev->descriptor.idProduct); 544 if (vid == MXU1_VENDOR_ID) { 545 switch (pid) { 546 case MXU1_1130_PRODUCT_ID: 547 case MXU1_1131_PRODUCT_ID: 548 tdev->td_rs485_only = true; 549 break; 550 } 551 } 552 553 cur_altsetting = serial->interface->cur_altsetting; 554 num_endpoints = cur_altsetting->desc.bNumEndpoints; 555 556 /* if we have only 1 configuration and 1 endpoint, download firmware */ 557 if (dev->descriptor.bNumConfigurations == 1 && num_endpoints == 1) { 558 status = ti_download_firmware(tdev); 559 560 if (status != 0) 561 goto free_tdev; 562 563 /* 3410 must be reset, 5052 resets itself */ 564 if (tdev->td_is_3410) { 565 msleep_interruptible(100); 566 usb_reset_device(dev); 567 } 568 569 status = -ENODEV; 570 goto free_tdev; 571 } 572 573 /* the second configuration must be set */ 574 if (dev->actconfig->desc.bConfigurationValue == TI_BOOT_CONFIG) { 575 status = usb_driver_set_configuration(dev, TI_ACTIVE_CONFIG); 576 status = status ? status : -ENODEV; 577 goto free_tdev; 578 } 579 580 if (serial->num_bulk_in < serial->num_ports || 581 serial->num_bulk_out < serial->num_ports) { 582 dev_err(&serial->interface->dev, "missing endpoints\n"); 583 status = -ENODEV; 584 goto free_tdev; 585 } 586 587 return 0; 588 589 free_tdev: 590 kfree(tdev); 591 usb_set_serial_data(serial, NULL); 592 return status; 593 } 594 595 596 static void ti_release(struct usb_serial *serial) 597 { 598 struct ti_device *tdev = usb_get_serial_data(serial); 599 600 kfree(tdev); 601 } 602 603 static int ti_port_probe(struct usb_serial_port *port) 604 { 605 struct ti_port *tport; 606 607 tport = kzalloc(sizeof(*tport), GFP_KERNEL); 608 if (!tport) 609 return -ENOMEM; 610 611 spin_lock_init(&tport->tp_lock); 612 if (port == port->serial->port[0]) 613 tport->tp_uart_base_addr = TI_UART1_BASE_ADDR; 614 else 615 tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; 616 port->port.closing_wait = msecs_to_jiffies(10 * closing_wait); 617 tport->tp_port = port; 618 tport->tp_tdev = usb_get_serial_data(port->serial); 619 620 if (tport->tp_tdev->td_rs485_only) 621 tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED; 622 else 623 tport->tp_uart_mode = TI_UART_232; 624 625 usb_set_serial_port_data(port, tport); 626 627 port->port.drain_delay = 3; 628 629 return 0; 630 } 631 632 static int ti_port_remove(struct usb_serial_port *port) 633 { 634 struct ti_port *tport; 635 636 tport = usb_get_serial_port_data(port); 637 kfree(tport); 638 639 return 0; 640 } 641 642 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port) 643 { 644 struct ti_port *tport = usb_get_serial_port_data(port); 645 struct ti_device *tdev; 646 struct usb_device *dev; 647 struct urb *urb; 648 int port_number; 649 int status; 650 u16 open_settings; 651 652 open_settings = (TI_PIPE_MODE_CONTINUOUS | 653 TI_PIPE_TIMEOUT_ENABLE | 654 (TI_TRANSFER_TIMEOUT << 2)); 655 656 dev = port->serial->dev; 657 tdev = tport->tp_tdev; 658 659 /* only one open on any port on a device at a time */ 660 if (mutex_lock_interruptible(&tdev->td_open_close_lock)) 661 return -ERESTARTSYS; 662 663 port_number = port->port_number; 664 665 tport->tp_msr = 0; 666 tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR); 667 668 /* start interrupt urb the first time a port is opened on this device */ 669 if (tdev->td_open_port_count == 0) { 670 dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__); 671 urb = tdev->td_serial->port[0]->interrupt_in_urb; 672 if (!urb) { 673 dev_err(&port->dev, "%s - no interrupt urb\n", __func__); 674 status = -EINVAL; 675 goto release_lock; 676 } 677 urb->context = tdev; 678 status = usb_submit_urb(urb, GFP_KERNEL); 679 if (status) { 680 dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status); 681 goto release_lock; 682 } 683 } 684 685 if (tty) 686 ti_set_termios(tty, port, &tty->termios); 687 688 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 689 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 690 if (status) { 691 dev_err(&port->dev, "%s - cannot send open command, %d\n", 692 __func__, status); 693 goto unlink_int_urb; 694 } 695 696 status = ti_command_out_sync(tdev, TI_START_PORT, 697 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 698 if (status) { 699 dev_err(&port->dev, "%s - cannot send start command, %d\n", 700 __func__, status); 701 goto unlink_int_urb; 702 } 703 704 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 705 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_INPUT, NULL, 0); 706 if (status) { 707 dev_err(&port->dev, "%s - cannot clear input buffers, %d\n", 708 __func__, status); 709 goto unlink_int_urb; 710 } 711 status = ti_command_out_sync(tdev, TI_PURGE_PORT, 712 (__u8)(TI_UART1_PORT + port_number), TI_PURGE_OUTPUT, NULL, 0); 713 if (status) { 714 dev_err(&port->dev, "%s - cannot clear output buffers, %d\n", 715 __func__, status); 716 goto unlink_int_urb; 717 } 718 719 /* reset the data toggle on the bulk endpoints to work around bug in 720 * host controllers where things get out of sync some times */ 721 usb_clear_halt(dev, port->write_urb->pipe); 722 usb_clear_halt(dev, port->read_urb->pipe); 723 724 if (tty) 725 ti_set_termios(tty, port, &tty->termios); 726 727 status = ti_command_out_sync(tdev, TI_OPEN_PORT, 728 (__u8)(TI_UART1_PORT + port_number), open_settings, NULL, 0); 729 if (status) { 730 dev_err(&port->dev, "%s - cannot send open command (2), %d\n", 731 __func__, status); 732 goto unlink_int_urb; 733 } 734 735 status = ti_command_out_sync(tdev, TI_START_PORT, 736 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 737 if (status) { 738 dev_err(&port->dev, "%s - cannot send start command (2), %d\n", 739 __func__, status); 740 goto unlink_int_urb; 741 } 742 743 /* start read urb */ 744 urb = port->read_urb; 745 if (!urb) { 746 dev_err(&port->dev, "%s - no read urb\n", __func__); 747 status = -EINVAL; 748 goto unlink_int_urb; 749 } 750 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 751 urb->context = tport; 752 status = usb_submit_urb(urb, GFP_KERNEL); 753 if (status) { 754 dev_err(&port->dev, "%s - submit read urb failed, %d\n", 755 __func__, status); 756 goto unlink_int_urb; 757 } 758 759 tport->tp_is_open = 1; 760 ++tdev->td_open_port_count; 761 762 goto release_lock; 763 764 unlink_int_urb: 765 if (tdev->td_open_port_count == 0) 766 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 767 release_lock: 768 mutex_unlock(&tdev->td_open_close_lock); 769 return status; 770 } 771 772 773 static void ti_close(struct usb_serial_port *port) 774 { 775 struct ti_device *tdev; 776 struct ti_port *tport; 777 int port_number; 778 int status; 779 unsigned long flags; 780 781 tdev = usb_get_serial_data(port->serial); 782 tport = usb_get_serial_port_data(port); 783 784 tport->tp_is_open = 0; 785 786 usb_kill_urb(port->read_urb); 787 usb_kill_urb(port->write_urb); 788 tport->tp_write_urb_in_use = 0; 789 spin_lock_irqsave(&tport->tp_lock, flags); 790 kfifo_reset_out(&port->write_fifo); 791 spin_unlock_irqrestore(&tport->tp_lock, flags); 792 793 port_number = port->port_number; 794 795 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 796 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 797 if (status) 798 dev_err(&port->dev, 799 "%s - cannot send close port command, %d\n" 800 , __func__, status); 801 802 mutex_lock(&tdev->td_open_close_lock); 803 --tdev->td_open_port_count; 804 if (tdev->td_open_port_count == 0) { 805 /* last port is closed, shut down interrupt urb */ 806 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 807 } 808 mutex_unlock(&tdev->td_open_close_lock); 809 } 810 811 812 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 813 const unsigned char *data, int count) 814 { 815 struct ti_port *tport = usb_get_serial_port_data(port); 816 817 if (count == 0) { 818 return 0; 819 } 820 821 if (!tport->tp_is_open) 822 return -ENODEV; 823 824 count = kfifo_in_locked(&port->write_fifo, data, count, 825 &tport->tp_lock); 826 ti_send(tport); 827 828 return count; 829 } 830 831 832 static int ti_write_room(struct tty_struct *tty) 833 { 834 struct usb_serial_port *port = tty->driver_data; 835 struct ti_port *tport = usb_get_serial_port_data(port); 836 int room = 0; 837 unsigned long flags; 838 839 spin_lock_irqsave(&tport->tp_lock, flags); 840 room = kfifo_avail(&port->write_fifo); 841 spin_unlock_irqrestore(&tport->tp_lock, flags); 842 843 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 844 return room; 845 } 846 847 848 static int ti_chars_in_buffer(struct tty_struct *tty) 849 { 850 struct usb_serial_port *port = tty->driver_data; 851 struct ti_port *tport = usb_get_serial_port_data(port); 852 int chars = 0; 853 unsigned long flags; 854 855 spin_lock_irqsave(&tport->tp_lock, flags); 856 chars = kfifo_len(&port->write_fifo); 857 spin_unlock_irqrestore(&tport->tp_lock, flags); 858 859 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 860 return chars; 861 } 862 863 static bool ti_tx_empty(struct usb_serial_port *port) 864 { 865 struct ti_port *tport = usb_get_serial_port_data(port); 866 int ret; 867 u8 lsr; 868 869 ret = ti_get_lsr(tport, &lsr); 870 if (!ret && !(lsr & TI_LSR_TX_EMPTY)) 871 return false; 872 873 return true; 874 } 875 876 static void ti_throttle(struct tty_struct *tty) 877 { 878 struct usb_serial_port *port = tty->driver_data; 879 struct ti_port *tport = usb_get_serial_port_data(port); 880 881 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 882 ti_stop_read(tport, tty); 883 884 } 885 886 887 static void ti_unthrottle(struct tty_struct *tty) 888 { 889 struct usb_serial_port *port = tty->driver_data; 890 struct ti_port *tport = usb_get_serial_port_data(port); 891 int status; 892 893 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 894 status = ti_restart_read(tport, tty); 895 if (status) 896 dev_err(&port->dev, "%s - cannot restart read, %d\n", 897 __func__, status); 898 } 899 } 900 901 static void ti_set_termios(struct tty_struct *tty, 902 struct usb_serial_port *port, struct ktermios *old_termios) 903 { 904 struct ti_port *tport = usb_get_serial_port_data(port); 905 struct ti_uart_config *config; 906 int baud; 907 int status; 908 int port_number = port->port_number; 909 unsigned int mcr; 910 u16 wbaudrate; 911 u16 wflags = 0; 912 913 config = kmalloc(sizeof(*config), GFP_KERNEL); 914 if (!config) 915 return; 916 917 /* these flags must be set */ 918 wflags |= TI_UART_ENABLE_MS_INTS; 919 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 920 config->bUartMode = tport->tp_uart_mode; 921 922 switch (C_CSIZE(tty)) { 923 case CS5: 924 config->bDataBits = TI_UART_5_DATA_BITS; 925 break; 926 case CS6: 927 config->bDataBits = TI_UART_6_DATA_BITS; 928 break; 929 case CS7: 930 config->bDataBits = TI_UART_7_DATA_BITS; 931 break; 932 default: 933 case CS8: 934 config->bDataBits = TI_UART_8_DATA_BITS; 935 break; 936 } 937 938 /* CMSPAR isn't supported by this driver */ 939 tty->termios.c_cflag &= ~CMSPAR; 940 941 if (C_PARENB(tty)) { 942 if (C_PARODD(tty)) { 943 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 944 config->bParity = TI_UART_ODD_PARITY; 945 } else { 946 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 947 config->bParity = TI_UART_EVEN_PARITY; 948 } 949 } else { 950 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 951 config->bParity = TI_UART_NO_PARITY; 952 } 953 954 if (C_CSTOPB(tty)) 955 config->bStopBits = TI_UART_2_STOP_BITS; 956 else 957 config->bStopBits = TI_UART_1_STOP_BITS; 958 959 if (C_CRTSCTS(tty)) { 960 /* RTS flow control must be off to drop RTS for baud rate B0 */ 961 if ((C_BAUD(tty)) != B0) 962 wflags |= TI_UART_ENABLE_RTS_IN; 963 wflags |= TI_UART_ENABLE_CTS_OUT; 964 } else { 965 ti_restart_read(tport, tty); 966 } 967 968 if (I_IXOFF(tty) || I_IXON(tty)) { 969 config->cXon = START_CHAR(tty); 970 config->cXoff = STOP_CHAR(tty); 971 972 if (I_IXOFF(tty)) 973 wflags |= TI_UART_ENABLE_X_IN; 974 else 975 ti_restart_read(tport, tty); 976 977 if (I_IXON(tty)) 978 wflags |= TI_UART_ENABLE_X_OUT; 979 } 980 981 baud = tty_get_baud_rate(tty); 982 if (!baud) 983 baud = 9600; 984 if (tport->tp_tdev->td_is_3410) 985 wbaudrate = (923077 + baud/2) / baud; 986 else 987 wbaudrate = (461538 + baud/2) / baud; 988 989 /* FIXME: Should calculate resulting baud here and report it back */ 990 if ((C_BAUD(tty)) != B0) 991 tty_encode_baud_rate(tty, baud, baud); 992 993 dev_dbg(&port->dev, 994 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 995 __func__, baud, wbaudrate, wflags, 996 config->bDataBits, config->bParity, config->bStopBits, 997 config->cXon, config->cXoff, config->bUartMode); 998 999 config->wBaudRate = cpu_to_be16(wbaudrate); 1000 config->wFlags = cpu_to_be16(wflags); 1001 1002 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1003 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1004 sizeof(*config)); 1005 if (status) 1006 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1007 __func__, port_number, status); 1008 1009 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1010 mcr = tport->tp_shadow_mcr; 1011 /* if baud rate is B0, clear RTS and DTR */ 1012 if (C_BAUD(tty) == B0) 1013 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1014 status = ti_set_mcr(tport, mcr); 1015 if (status) 1016 dev_err(&port->dev, 1017 "%s - cannot set modem control on port %d, %d\n", 1018 __func__, port_number, status); 1019 1020 kfree(config); 1021 } 1022 1023 1024 static int ti_tiocmget(struct tty_struct *tty) 1025 { 1026 struct usb_serial_port *port = tty->driver_data; 1027 struct ti_port *tport = usb_get_serial_port_data(port); 1028 unsigned int result; 1029 unsigned int msr; 1030 unsigned int mcr; 1031 unsigned long flags; 1032 1033 spin_lock_irqsave(&tport->tp_lock, flags); 1034 msr = tport->tp_msr; 1035 mcr = tport->tp_shadow_mcr; 1036 spin_unlock_irqrestore(&tport->tp_lock, flags); 1037 1038 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1039 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1040 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1041 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1042 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1043 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1044 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1045 1046 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1047 1048 return result; 1049 } 1050 1051 1052 static int ti_tiocmset(struct tty_struct *tty, 1053 unsigned int set, unsigned int clear) 1054 { 1055 struct usb_serial_port *port = tty->driver_data; 1056 struct ti_port *tport = usb_get_serial_port_data(port); 1057 unsigned int mcr; 1058 unsigned long flags; 1059 1060 spin_lock_irqsave(&tport->tp_lock, flags); 1061 mcr = tport->tp_shadow_mcr; 1062 1063 if (set & TIOCM_RTS) 1064 mcr |= TI_MCR_RTS; 1065 if (set & TIOCM_DTR) 1066 mcr |= TI_MCR_DTR; 1067 if (set & TIOCM_LOOP) 1068 mcr |= TI_MCR_LOOP; 1069 1070 if (clear & TIOCM_RTS) 1071 mcr &= ~TI_MCR_RTS; 1072 if (clear & TIOCM_DTR) 1073 mcr &= ~TI_MCR_DTR; 1074 if (clear & TIOCM_LOOP) 1075 mcr &= ~TI_MCR_LOOP; 1076 spin_unlock_irqrestore(&tport->tp_lock, flags); 1077 1078 return ti_set_mcr(tport, mcr); 1079 } 1080 1081 1082 static void ti_break(struct tty_struct *tty, int break_state) 1083 { 1084 struct usb_serial_port *port = tty->driver_data; 1085 struct ti_port *tport = usb_get_serial_port_data(port); 1086 int status; 1087 1088 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1089 1090 status = ti_write_byte(port, tport->tp_tdev, 1091 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1092 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1093 1094 if (status) 1095 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1096 } 1097 1098 static int ti_get_port_from_code(unsigned char code) 1099 { 1100 return (code >> 6) & 0x01; 1101 } 1102 1103 static int ti_get_func_from_code(unsigned char code) 1104 { 1105 return code & 0x0f; 1106 } 1107 1108 static void ti_interrupt_callback(struct urb *urb) 1109 { 1110 struct ti_device *tdev = urb->context; 1111 struct usb_serial_port *port; 1112 struct usb_serial *serial = tdev->td_serial; 1113 struct ti_port *tport; 1114 struct device *dev = &urb->dev->dev; 1115 unsigned char *data = urb->transfer_buffer; 1116 int length = urb->actual_length; 1117 int port_number; 1118 int function; 1119 int status = urb->status; 1120 int retval; 1121 u8 msr; 1122 1123 switch (status) { 1124 case 0: 1125 break; 1126 case -ECONNRESET: 1127 case -ENOENT: 1128 case -ESHUTDOWN: 1129 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1130 return; 1131 default: 1132 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1133 goto exit; 1134 } 1135 1136 if (length != 2) { 1137 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1138 goto exit; 1139 } 1140 1141 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1142 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1143 goto exit; 1144 } 1145 1146 port_number = ti_get_port_from_code(data[0]); 1147 function = ti_get_func_from_code(data[0]); 1148 1149 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1150 __func__, port_number, function, data[1]); 1151 1152 if (port_number >= serial->num_ports) { 1153 dev_err(dev, "%s - bad port number, %d\n", 1154 __func__, port_number); 1155 goto exit; 1156 } 1157 1158 port = serial->port[port_number]; 1159 1160 tport = usb_get_serial_port_data(port); 1161 if (!tport) 1162 goto exit; 1163 1164 switch (function) { 1165 case TI_CODE_DATA_ERROR: 1166 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1167 __func__, port_number, data[1]); 1168 break; 1169 1170 case TI_CODE_MODEM_STATUS: 1171 msr = data[1]; 1172 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1173 ti_handle_new_msr(tport, msr); 1174 break; 1175 1176 default: 1177 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1178 __func__, data[1]); 1179 break; 1180 } 1181 1182 exit: 1183 retval = usb_submit_urb(urb, GFP_ATOMIC); 1184 if (retval) 1185 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1186 __func__, retval); 1187 } 1188 1189 1190 static void ti_bulk_in_callback(struct urb *urb) 1191 { 1192 struct ti_port *tport = urb->context; 1193 struct usb_serial_port *port = tport->tp_port; 1194 struct device *dev = &urb->dev->dev; 1195 int status = urb->status; 1196 unsigned long flags; 1197 int retval = 0; 1198 1199 switch (status) { 1200 case 0: 1201 break; 1202 case -ECONNRESET: 1203 case -ENOENT: 1204 case -ESHUTDOWN: 1205 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1206 return; 1207 default: 1208 dev_err(dev, "%s - nonzero urb status, %d\n", 1209 __func__, status); 1210 } 1211 1212 if (status == -EPIPE) 1213 goto exit; 1214 1215 if (status) { 1216 dev_err(dev, "%s - stopping read!\n", __func__); 1217 return; 1218 } 1219 1220 if (urb->actual_length) { 1221 usb_serial_debug_data(dev, __func__, urb->actual_length, 1222 urb->transfer_buffer); 1223 1224 if (!tport->tp_is_open) 1225 dev_dbg(dev, "%s - port closed, dropping data\n", 1226 __func__); 1227 else 1228 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1229 spin_lock_irqsave(&tport->tp_lock, flags); 1230 port->icount.rx += urb->actual_length; 1231 spin_unlock_irqrestore(&tport->tp_lock, flags); 1232 } 1233 1234 exit: 1235 /* continue to read unless stopping */ 1236 spin_lock_irqsave(&tport->tp_lock, flags); 1237 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1238 retval = usb_submit_urb(urb, GFP_ATOMIC); 1239 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1240 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1241 1242 spin_unlock_irqrestore(&tport->tp_lock, flags); 1243 if (retval) 1244 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1245 __func__, retval); 1246 } 1247 1248 1249 static void ti_bulk_out_callback(struct urb *urb) 1250 { 1251 struct ti_port *tport = urb->context; 1252 struct usb_serial_port *port = tport->tp_port; 1253 int status = urb->status; 1254 1255 tport->tp_write_urb_in_use = 0; 1256 1257 switch (status) { 1258 case 0: 1259 break; 1260 case -ECONNRESET: 1261 case -ENOENT: 1262 case -ESHUTDOWN: 1263 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1264 return; 1265 default: 1266 dev_err_console(port, "%s - nonzero urb status, %d\n", 1267 __func__, status); 1268 } 1269 1270 /* send any buffered data */ 1271 ti_send(tport); 1272 } 1273 1274 1275 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1276 int length) 1277 { 1278 int cnt; 1279 1280 do { 1281 cnt = tty_insert_flip_string(&port->port, data, length); 1282 if (cnt < length) { 1283 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1284 __func__, length - cnt); 1285 if (cnt == 0) 1286 break; 1287 } 1288 tty_flip_buffer_push(&port->port); 1289 data += cnt; 1290 length -= cnt; 1291 } while (length > 0); 1292 } 1293 1294 1295 static void ti_send(struct ti_port *tport) 1296 { 1297 int count, result; 1298 struct usb_serial_port *port = tport->tp_port; 1299 unsigned long flags; 1300 1301 spin_lock_irqsave(&tport->tp_lock, flags); 1302 1303 if (tport->tp_write_urb_in_use) 1304 goto unlock; 1305 1306 count = kfifo_out(&port->write_fifo, 1307 port->write_urb->transfer_buffer, 1308 port->bulk_out_size); 1309 1310 if (count == 0) 1311 goto unlock; 1312 1313 tport->tp_write_urb_in_use = 1; 1314 1315 spin_unlock_irqrestore(&tport->tp_lock, flags); 1316 1317 usb_serial_debug_data(&port->dev, __func__, count, 1318 port->write_urb->transfer_buffer); 1319 1320 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1321 usb_sndbulkpipe(port->serial->dev, 1322 port->bulk_out_endpointAddress), 1323 port->write_urb->transfer_buffer, count, 1324 ti_bulk_out_callback, tport); 1325 1326 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1327 if (result) { 1328 dev_err_console(port, "%s - submit write urb failed, %d\n", 1329 __func__, result); 1330 tport->tp_write_urb_in_use = 0; 1331 /* TODO: reschedule ti_send */ 1332 } else { 1333 spin_lock_irqsave(&tport->tp_lock, flags); 1334 port->icount.tx += count; 1335 spin_unlock_irqrestore(&tport->tp_lock, flags); 1336 } 1337 1338 /* more room in the buffer for new writes, wakeup */ 1339 tty_port_tty_wakeup(&port->port); 1340 1341 return; 1342 unlock: 1343 spin_unlock_irqrestore(&tport->tp_lock, flags); 1344 return; 1345 } 1346 1347 1348 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1349 { 1350 unsigned long flags; 1351 int status; 1352 1353 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1354 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1355 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1356 1357 spin_lock_irqsave(&tport->tp_lock, flags); 1358 if (!status) 1359 tport->tp_shadow_mcr = mcr; 1360 spin_unlock_irqrestore(&tport->tp_lock, flags); 1361 1362 return status; 1363 } 1364 1365 1366 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1367 { 1368 int size, status; 1369 struct ti_device *tdev = tport->tp_tdev; 1370 struct usb_serial_port *port = tport->tp_port; 1371 int port_number = port->port_number; 1372 struct ti_port_status *data; 1373 1374 size = sizeof(struct ti_port_status); 1375 data = kmalloc(size, GFP_KERNEL); 1376 if (!data) 1377 return -ENOMEM; 1378 1379 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1380 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1381 if (status) { 1382 dev_err(&port->dev, 1383 "%s - get port status command failed, %d\n", 1384 __func__, status); 1385 goto free_data; 1386 } 1387 1388 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1389 1390 *lsr = data->bLSR; 1391 1392 free_data: 1393 kfree(data); 1394 return status; 1395 } 1396 1397 1398 static int ti_get_serial_info(struct tty_struct *tty, 1399 struct serial_struct *ss) 1400 { 1401 struct usb_serial_port *port = tty->driver_data; 1402 struct ti_port *tport = usb_get_serial_port_data(port); 1403 unsigned cwait; 1404 1405 cwait = port->port.closing_wait; 1406 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1407 cwait = jiffies_to_msecs(cwait) / 10; 1408 1409 ss->type = PORT_16550A; 1410 ss->line = port->minor; 1411 ss->port = port->port_number; 1412 ss->xmit_fifo_size = kfifo_size(&port->write_fifo); 1413 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1414 ss->closing_wait = cwait; 1415 return 0; 1416 } 1417 1418 1419 static int ti_set_serial_info(struct tty_struct *tty, 1420 struct serial_struct *ss) 1421 { 1422 struct usb_serial_port *port = tty->driver_data; 1423 struct ti_port *tport = usb_get_serial_port_data(port); 1424 unsigned cwait; 1425 1426 cwait = ss->closing_wait; 1427 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1428 cwait = msecs_to_jiffies(10 * ss->closing_wait); 1429 1430 tport->tp_port->port.closing_wait = cwait; 1431 1432 return 0; 1433 } 1434 1435 1436 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1437 { 1438 struct async_icount *icount; 1439 struct tty_struct *tty; 1440 unsigned long flags; 1441 1442 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1443 1444 if (msr & TI_MSR_DELTA_MASK) { 1445 spin_lock_irqsave(&tport->tp_lock, flags); 1446 icount = &tport->tp_port->icount; 1447 if (msr & TI_MSR_DELTA_CTS) 1448 icount->cts++; 1449 if (msr & TI_MSR_DELTA_DSR) 1450 icount->dsr++; 1451 if (msr & TI_MSR_DELTA_CD) 1452 icount->dcd++; 1453 if (msr & TI_MSR_DELTA_RI) 1454 icount->rng++; 1455 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1456 spin_unlock_irqrestore(&tport->tp_lock, flags); 1457 } 1458 1459 tport->tp_msr = msr & TI_MSR_MASK; 1460 1461 /* handle CTS flow control */ 1462 tty = tty_port_tty_get(&tport->tp_port->port); 1463 if (tty && C_CRTSCTS(tty)) { 1464 if (msr & TI_MSR_CTS) 1465 tty_wakeup(tty); 1466 } 1467 tty_kref_put(tty); 1468 } 1469 1470 1471 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1472 { 1473 unsigned long flags; 1474 1475 spin_lock_irqsave(&tport->tp_lock, flags); 1476 1477 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1478 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1479 1480 spin_unlock_irqrestore(&tport->tp_lock, flags); 1481 } 1482 1483 1484 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1485 { 1486 struct urb *urb; 1487 int status = 0; 1488 unsigned long flags; 1489 1490 spin_lock_irqsave(&tport->tp_lock, flags); 1491 1492 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1493 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1494 urb = tport->tp_port->read_urb; 1495 spin_unlock_irqrestore(&tport->tp_lock, flags); 1496 urb->context = tport; 1497 status = usb_submit_urb(urb, GFP_KERNEL); 1498 } else { 1499 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1500 spin_unlock_irqrestore(&tport->tp_lock, flags); 1501 } 1502 1503 return status; 1504 } 1505 1506 1507 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1508 __u16 moduleid, __u16 value, __u8 *data, int size) 1509 { 1510 int status; 1511 1512 status = usb_control_msg(tdev->td_serial->dev, 1513 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1514 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1515 value, moduleid, data, size, 1000); 1516 1517 if (status < 0) 1518 return status; 1519 1520 return 0; 1521 } 1522 1523 1524 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1525 __u16 moduleid, __u16 value, __u8 *data, int size) 1526 { 1527 int status; 1528 1529 status = usb_control_msg(tdev->td_serial->dev, 1530 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1531 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1532 value, moduleid, data, size, 1000); 1533 1534 if (status == size) 1535 status = 0; 1536 else if (status >= 0) 1537 status = -ECOMM; 1538 1539 return status; 1540 } 1541 1542 1543 static int ti_write_byte(struct usb_serial_port *port, 1544 struct ti_device *tdev, unsigned long addr, 1545 u8 mask, u8 byte) 1546 { 1547 int status; 1548 unsigned int size; 1549 struct ti_write_data_bytes *data; 1550 1551 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1552 addr, mask, byte); 1553 1554 size = sizeof(struct ti_write_data_bytes) + 2; 1555 data = kmalloc(size, GFP_KERNEL); 1556 if (!data) 1557 return -ENOMEM; 1558 1559 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1560 data->bDataType = TI_RW_DATA_BYTE; 1561 data->bDataCounter = 1; 1562 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1563 data->wBaseAddrLo = cpu_to_be16(addr); 1564 data->bData[0] = mask; 1565 data->bData[1] = byte; 1566 1567 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1568 (__u8 *)data, size); 1569 1570 if (status < 0) 1571 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1572 1573 kfree(data); 1574 1575 return status; 1576 } 1577 1578 static int ti_do_download(struct usb_device *dev, int pipe, 1579 u8 *buffer, int size) 1580 { 1581 int pos; 1582 u8 cs = 0; 1583 int done; 1584 struct ti_firmware_header *header; 1585 int status = 0; 1586 int len; 1587 1588 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1589 cs = (u8)(cs + buffer[pos]); 1590 1591 header = (struct ti_firmware_header *)buffer; 1592 header->wLength = cpu_to_le16(size - sizeof(*header)); 1593 header->bCheckSum = cs; 1594 1595 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1596 for (pos = 0; pos < size; pos += done) { 1597 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1598 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1599 &done, 1000); 1600 if (status) 1601 break; 1602 } 1603 return status; 1604 } 1605 1606 static int ti_download_firmware(struct ti_device *tdev) 1607 { 1608 int status; 1609 int buffer_size; 1610 u8 *buffer; 1611 struct usb_device *dev = tdev->td_serial->dev; 1612 unsigned int pipe = usb_sndbulkpipe(dev, 1613 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1614 const struct firmware *fw_p; 1615 char buf[32]; 1616 1617 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1618 snprintf(buf, 1619 sizeof(buf), 1620 "moxa/moxa-%04x.fw", 1621 le16_to_cpu(dev->descriptor.idProduct)); 1622 1623 status = request_firmware(&fw_p, buf, &dev->dev); 1624 goto check_firmware; 1625 } 1626 1627 /* try ID specific firmware first, then try generic firmware */ 1628 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1629 le16_to_cpu(dev->descriptor.idVendor), 1630 le16_to_cpu(dev->descriptor.idProduct)); 1631 status = request_firmware(&fw_p, buf, &dev->dev); 1632 1633 if (status != 0) { 1634 buf[0] = '\0'; 1635 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1636 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1637 case MTS_CDMA_PRODUCT_ID: 1638 strcpy(buf, "mts_cdma.fw"); 1639 break; 1640 case MTS_GSM_PRODUCT_ID: 1641 strcpy(buf, "mts_gsm.fw"); 1642 break; 1643 case MTS_EDGE_PRODUCT_ID: 1644 strcpy(buf, "mts_edge.fw"); 1645 break; 1646 case MTS_MT9234MU_PRODUCT_ID: 1647 strcpy(buf, "mts_mt9234mu.fw"); 1648 break; 1649 case MTS_MT9234ZBA_PRODUCT_ID: 1650 strcpy(buf, "mts_mt9234zba.fw"); 1651 break; 1652 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1653 strcpy(buf, "mts_mt9234zba.fw"); 1654 break; } 1655 } 1656 if (buf[0] == '\0') { 1657 if (tdev->td_is_3410) 1658 strcpy(buf, "ti_3410.fw"); 1659 else 1660 strcpy(buf, "ti_5052.fw"); 1661 } 1662 status = request_firmware(&fw_p, buf, &dev->dev); 1663 } 1664 1665 check_firmware: 1666 if (status) { 1667 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1668 return -ENOENT; 1669 } 1670 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1671 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1672 release_firmware(fw_p); 1673 return -ENOENT; 1674 } 1675 1676 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1677 buffer = kmalloc(buffer_size, GFP_KERNEL); 1678 if (buffer) { 1679 memcpy(buffer, fw_p->data, fw_p->size); 1680 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1681 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1682 kfree(buffer); 1683 } else { 1684 status = -ENOMEM; 1685 } 1686 release_firmware(fw_p); 1687 if (status) { 1688 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1689 __func__, status); 1690 return status; 1691 } 1692 1693 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1694 1695 return 0; 1696 } 1697