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[0]; 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[0]; 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 int do_unlock; 780 unsigned long flags; 781 782 tdev = usb_get_serial_data(port->serial); 783 tport = usb_get_serial_port_data(port); 784 785 tport->tp_is_open = 0; 786 787 usb_kill_urb(port->read_urb); 788 usb_kill_urb(port->write_urb); 789 tport->tp_write_urb_in_use = 0; 790 spin_lock_irqsave(&tport->tp_lock, flags); 791 kfifo_reset_out(&port->write_fifo); 792 spin_unlock_irqrestore(&tport->tp_lock, flags); 793 794 port_number = port->port_number; 795 796 status = ti_command_out_sync(tdev, TI_CLOSE_PORT, 797 (__u8)(TI_UART1_PORT + port_number), 0, NULL, 0); 798 if (status) 799 dev_err(&port->dev, 800 "%s - cannot send close port command, %d\n" 801 , __func__, status); 802 803 /* if mutex_lock is interrupted, continue anyway */ 804 do_unlock = !mutex_lock_interruptible(&tdev->td_open_close_lock); 805 --tport->tp_tdev->td_open_port_count; 806 if (tport->tp_tdev->td_open_port_count <= 0) { 807 /* last port is closed, shut down interrupt urb */ 808 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 809 tport->tp_tdev->td_open_port_count = 0; 810 } 811 if (do_unlock) 812 mutex_unlock(&tdev->td_open_close_lock); 813 } 814 815 816 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port, 817 const unsigned char *data, int count) 818 { 819 struct ti_port *tport = usb_get_serial_port_data(port); 820 821 if (count == 0) { 822 return 0; 823 } 824 825 if (!tport->tp_is_open) 826 return -ENODEV; 827 828 count = kfifo_in_locked(&port->write_fifo, data, count, 829 &tport->tp_lock); 830 ti_send(tport); 831 832 return count; 833 } 834 835 836 static int ti_write_room(struct tty_struct *tty) 837 { 838 struct usb_serial_port *port = tty->driver_data; 839 struct ti_port *tport = usb_get_serial_port_data(port); 840 int room = 0; 841 unsigned long flags; 842 843 spin_lock_irqsave(&tport->tp_lock, flags); 844 room = kfifo_avail(&port->write_fifo); 845 spin_unlock_irqrestore(&tport->tp_lock, flags); 846 847 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 848 return room; 849 } 850 851 852 static int ti_chars_in_buffer(struct tty_struct *tty) 853 { 854 struct usb_serial_port *port = tty->driver_data; 855 struct ti_port *tport = usb_get_serial_port_data(port); 856 int chars = 0; 857 unsigned long flags; 858 859 spin_lock_irqsave(&tport->tp_lock, flags); 860 chars = kfifo_len(&port->write_fifo); 861 spin_unlock_irqrestore(&tport->tp_lock, flags); 862 863 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 864 return chars; 865 } 866 867 static bool ti_tx_empty(struct usb_serial_port *port) 868 { 869 struct ti_port *tport = usb_get_serial_port_data(port); 870 int ret; 871 u8 lsr; 872 873 ret = ti_get_lsr(tport, &lsr); 874 if (!ret && !(lsr & TI_LSR_TX_EMPTY)) 875 return false; 876 877 return true; 878 } 879 880 static void ti_throttle(struct tty_struct *tty) 881 { 882 struct usb_serial_port *port = tty->driver_data; 883 struct ti_port *tport = usb_get_serial_port_data(port); 884 885 if (I_IXOFF(tty) || C_CRTSCTS(tty)) 886 ti_stop_read(tport, tty); 887 888 } 889 890 891 static void ti_unthrottle(struct tty_struct *tty) 892 { 893 struct usb_serial_port *port = tty->driver_data; 894 struct ti_port *tport = usb_get_serial_port_data(port); 895 int status; 896 897 if (I_IXOFF(tty) || C_CRTSCTS(tty)) { 898 status = ti_restart_read(tport, tty); 899 if (status) 900 dev_err(&port->dev, "%s - cannot restart read, %d\n", 901 __func__, status); 902 } 903 } 904 905 static void ti_set_termios(struct tty_struct *tty, 906 struct usb_serial_port *port, struct ktermios *old_termios) 907 { 908 struct ti_port *tport = usb_get_serial_port_data(port); 909 struct ti_uart_config *config; 910 int baud; 911 int status; 912 int port_number = port->port_number; 913 unsigned int mcr; 914 u16 wbaudrate; 915 u16 wflags = 0; 916 917 config = kmalloc(sizeof(*config), GFP_KERNEL); 918 if (!config) 919 return; 920 921 /* these flags must be set */ 922 wflags |= TI_UART_ENABLE_MS_INTS; 923 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 924 config->bUartMode = tport->tp_uart_mode; 925 926 switch (C_CSIZE(tty)) { 927 case CS5: 928 config->bDataBits = TI_UART_5_DATA_BITS; 929 break; 930 case CS6: 931 config->bDataBits = TI_UART_6_DATA_BITS; 932 break; 933 case CS7: 934 config->bDataBits = TI_UART_7_DATA_BITS; 935 break; 936 default: 937 case CS8: 938 config->bDataBits = TI_UART_8_DATA_BITS; 939 break; 940 } 941 942 /* CMSPAR isn't supported by this driver */ 943 tty->termios.c_cflag &= ~CMSPAR; 944 945 if (C_PARENB(tty)) { 946 if (C_PARODD(tty)) { 947 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 948 config->bParity = TI_UART_ODD_PARITY; 949 } else { 950 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 951 config->bParity = TI_UART_EVEN_PARITY; 952 } 953 } else { 954 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 955 config->bParity = TI_UART_NO_PARITY; 956 } 957 958 if (C_CSTOPB(tty)) 959 config->bStopBits = TI_UART_2_STOP_BITS; 960 else 961 config->bStopBits = TI_UART_1_STOP_BITS; 962 963 if (C_CRTSCTS(tty)) { 964 /* RTS flow control must be off to drop RTS for baud rate B0 */ 965 if ((C_BAUD(tty)) != B0) 966 wflags |= TI_UART_ENABLE_RTS_IN; 967 wflags |= TI_UART_ENABLE_CTS_OUT; 968 } else { 969 ti_restart_read(tport, tty); 970 } 971 972 if (I_IXOFF(tty) || I_IXON(tty)) { 973 config->cXon = START_CHAR(tty); 974 config->cXoff = STOP_CHAR(tty); 975 976 if (I_IXOFF(tty)) 977 wflags |= TI_UART_ENABLE_X_IN; 978 else 979 ti_restart_read(tport, tty); 980 981 if (I_IXON(tty)) 982 wflags |= TI_UART_ENABLE_X_OUT; 983 } 984 985 baud = tty_get_baud_rate(tty); 986 if (!baud) 987 baud = 9600; 988 if (tport->tp_tdev->td_is_3410) 989 wbaudrate = (923077 + baud/2) / baud; 990 else 991 wbaudrate = (461538 + baud/2) / baud; 992 993 /* FIXME: Should calculate resulting baud here and report it back */ 994 if ((C_BAUD(tty)) != B0) 995 tty_encode_baud_rate(tty, baud, baud); 996 997 dev_dbg(&port->dev, 998 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 999 __func__, baud, wbaudrate, wflags, 1000 config->bDataBits, config->bParity, config->bStopBits, 1001 config->cXon, config->cXoff, config->bUartMode); 1002 1003 config->wBaudRate = cpu_to_be16(wbaudrate); 1004 config->wFlags = cpu_to_be16(wflags); 1005 1006 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1007 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1008 sizeof(*config)); 1009 if (status) 1010 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1011 __func__, port_number, status); 1012 1013 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1014 mcr = tport->tp_shadow_mcr; 1015 /* if baud rate is B0, clear RTS and DTR */ 1016 if (C_BAUD(tty) == B0) 1017 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1018 status = ti_set_mcr(tport, mcr); 1019 if (status) 1020 dev_err(&port->dev, 1021 "%s - cannot set modem control on port %d, %d\n", 1022 __func__, port_number, status); 1023 1024 kfree(config); 1025 } 1026 1027 1028 static int ti_tiocmget(struct tty_struct *tty) 1029 { 1030 struct usb_serial_port *port = tty->driver_data; 1031 struct ti_port *tport = usb_get_serial_port_data(port); 1032 unsigned int result; 1033 unsigned int msr; 1034 unsigned int mcr; 1035 unsigned long flags; 1036 1037 spin_lock_irqsave(&tport->tp_lock, flags); 1038 msr = tport->tp_msr; 1039 mcr = tport->tp_shadow_mcr; 1040 spin_unlock_irqrestore(&tport->tp_lock, flags); 1041 1042 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1043 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1044 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1045 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1046 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1047 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1048 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1049 1050 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1051 1052 return result; 1053 } 1054 1055 1056 static int ti_tiocmset(struct tty_struct *tty, 1057 unsigned int set, unsigned int clear) 1058 { 1059 struct usb_serial_port *port = tty->driver_data; 1060 struct ti_port *tport = usb_get_serial_port_data(port); 1061 unsigned int mcr; 1062 unsigned long flags; 1063 1064 spin_lock_irqsave(&tport->tp_lock, flags); 1065 mcr = tport->tp_shadow_mcr; 1066 1067 if (set & TIOCM_RTS) 1068 mcr |= TI_MCR_RTS; 1069 if (set & TIOCM_DTR) 1070 mcr |= TI_MCR_DTR; 1071 if (set & TIOCM_LOOP) 1072 mcr |= TI_MCR_LOOP; 1073 1074 if (clear & TIOCM_RTS) 1075 mcr &= ~TI_MCR_RTS; 1076 if (clear & TIOCM_DTR) 1077 mcr &= ~TI_MCR_DTR; 1078 if (clear & TIOCM_LOOP) 1079 mcr &= ~TI_MCR_LOOP; 1080 spin_unlock_irqrestore(&tport->tp_lock, flags); 1081 1082 return ti_set_mcr(tport, mcr); 1083 } 1084 1085 1086 static void ti_break(struct tty_struct *tty, int break_state) 1087 { 1088 struct usb_serial_port *port = tty->driver_data; 1089 struct ti_port *tport = usb_get_serial_port_data(port); 1090 int status; 1091 1092 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1093 1094 status = ti_write_byte(port, tport->tp_tdev, 1095 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1096 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1097 1098 if (status) 1099 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1100 } 1101 1102 static int ti_get_port_from_code(unsigned char code) 1103 { 1104 return (code >> 6) & 0x01; 1105 } 1106 1107 static int ti_get_func_from_code(unsigned char code) 1108 { 1109 return code & 0x0f; 1110 } 1111 1112 static void ti_interrupt_callback(struct urb *urb) 1113 { 1114 struct ti_device *tdev = urb->context; 1115 struct usb_serial_port *port; 1116 struct usb_serial *serial = tdev->td_serial; 1117 struct ti_port *tport; 1118 struct device *dev = &urb->dev->dev; 1119 unsigned char *data = urb->transfer_buffer; 1120 int length = urb->actual_length; 1121 int port_number; 1122 int function; 1123 int status = urb->status; 1124 int retval; 1125 u8 msr; 1126 1127 switch (status) { 1128 case 0: 1129 break; 1130 case -ECONNRESET: 1131 case -ENOENT: 1132 case -ESHUTDOWN: 1133 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1134 return; 1135 default: 1136 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1137 goto exit; 1138 } 1139 1140 if (length != 2) { 1141 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1142 goto exit; 1143 } 1144 1145 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1146 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1147 goto exit; 1148 } 1149 1150 port_number = ti_get_port_from_code(data[0]); 1151 function = ti_get_func_from_code(data[0]); 1152 1153 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1154 __func__, port_number, function, data[1]); 1155 1156 if (port_number >= serial->num_ports) { 1157 dev_err(dev, "%s - bad port number, %d\n", 1158 __func__, port_number); 1159 goto exit; 1160 } 1161 1162 port = serial->port[port_number]; 1163 1164 tport = usb_get_serial_port_data(port); 1165 if (!tport) 1166 goto exit; 1167 1168 switch (function) { 1169 case TI_CODE_DATA_ERROR: 1170 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1171 __func__, port_number, data[1]); 1172 break; 1173 1174 case TI_CODE_MODEM_STATUS: 1175 msr = data[1]; 1176 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1177 ti_handle_new_msr(tport, msr); 1178 break; 1179 1180 default: 1181 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1182 __func__, data[1]); 1183 break; 1184 } 1185 1186 exit: 1187 retval = usb_submit_urb(urb, GFP_ATOMIC); 1188 if (retval) 1189 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1190 __func__, retval); 1191 } 1192 1193 1194 static void ti_bulk_in_callback(struct urb *urb) 1195 { 1196 struct ti_port *tport = urb->context; 1197 struct usb_serial_port *port = tport->tp_port; 1198 struct device *dev = &urb->dev->dev; 1199 int status = urb->status; 1200 unsigned long flags; 1201 int retval = 0; 1202 1203 switch (status) { 1204 case 0: 1205 break; 1206 case -ECONNRESET: 1207 case -ENOENT: 1208 case -ESHUTDOWN: 1209 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1210 return; 1211 default: 1212 dev_err(dev, "%s - nonzero urb status, %d\n", 1213 __func__, status); 1214 } 1215 1216 if (status == -EPIPE) 1217 goto exit; 1218 1219 if (status) { 1220 dev_err(dev, "%s - stopping read!\n", __func__); 1221 return; 1222 } 1223 1224 if (urb->actual_length) { 1225 usb_serial_debug_data(dev, __func__, urb->actual_length, 1226 urb->transfer_buffer); 1227 1228 if (!tport->tp_is_open) 1229 dev_dbg(dev, "%s - port closed, dropping data\n", 1230 __func__); 1231 else 1232 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1233 spin_lock_irqsave(&tport->tp_lock, flags); 1234 port->icount.rx += urb->actual_length; 1235 spin_unlock_irqrestore(&tport->tp_lock, flags); 1236 } 1237 1238 exit: 1239 /* continue to read unless stopping */ 1240 spin_lock_irqsave(&tport->tp_lock, flags); 1241 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1242 retval = usb_submit_urb(urb, GFP_ATOMIC); 1243 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1244 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1245 1246 spin_unlock_irqrestore(&tport->tp_lock, flags); 1247 if (retval) 1248 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1249 __func__, retval); 1250 } 1251 1252 1253 static void ti_bulk_out_callback(struct urb *urb) 1254 { 1255 struct ti_port *tport = urb->context; 1256 struct usb_serial_port *port = tport->tp_port; 1257 int status = urb->status; 1258 1259 tport->tp_write_urb_in_use = 0; 1260 1261 switch (status) { 1262 case 0: 1263 break; 1264 case -ECONNRESET: 1265 case -ENOENT: 1266 case -ESHUTDOWN: 1267 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1268 return; 1269 default: 1270 dev_err_console(port, "%s - nonzero urb status, %d\n", 1271 __func__, status); 1272 } 1273 1274 /* send any buffered data */ 1275 ti_send(tport); 1276 } 1277 1278 1279 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1280 int length) 1281 { 1282 int cnt; 1283 1284 do { 1285 cnt = tty_insert_flip_string(&port->port, data, length); 1286 if (cnt < length) { 1287 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1288 __func__, length - cnt); 1289 if (cnt == 0) 1290 break; 1291 } 1292 tty_flip_buffer_push(&port->port); 1293 data += cnt; 1294 length -= cnt; 1295 } while (length > 0); 1296 } 1297 1298 1299 static void ti_send(struct ti_port *tport) 1300 { 1301 int count, result; 1302 struct usb_serial_port *port = tport->tp_port; 1303 unsigned long flags; 1304 1305 spin_lock_irqsave(&tport->tp_lock, flags); 1306 1307 if (tport->tp_write_urb_in_use) 1308 goto unlock; 1309 1310 count = kfifo_out(&port->write_fifo, 1311 port->write_urb->transfer_buffer, 1312 port->bulk_out_size); 1313 1314 if (count == 0) 1315 goto unlock; 1316 1317 tport->tp_write_urb_in_use = 1; 1318 1319 spin_unlock_irqrestore(&tport->tp_lock, flags); 1320 1321 usb_serial_debug_data(&port->dev, __func__, count, 1322 port->write_urb->transfer_buffer); 1323 1324 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1325 usb_sndbulkpipe(port->serial->dev, 1326 port->bulk_out_endpointAddress), 1327 port->write_urb->transfer_buffer, count, 1328 ti_bulk_out_callback, tport); 1329 1330 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1331 if (result) { 1332 dev_err_console(port, "%s - submit write urb failed, %d\n", 1333 __func__, result); 1334 tport->tp_write_urb_in_use = 0; 1335 /* TODO: reschedule ti_send */ 1336 } else { 1337 spin_lock_irqsave(&tport->tp_lock, flags); 1338 port->icount.tx += count; 1339 spin_unlock_irqrestore(&tport->tp_lock, flags); 1340 } 1341 1342 /* more room in the buffer for new writes, wakeup */ 1343 tty_port_tty_wakeup(&port->port); 1344 1345 return; 1346 unlock: 1347 spin_unlock_irqrestore(&tport->tp_lock, flags); 1348 return; 1349 } 1350 1351 1352 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1353 { 1354 unsigned long flags; 1355 int status; 1356 1357 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1358 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1359 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1360 1361 spin_lock_irqsave(&tport->tp_lock, flags); 1362 if (!status) 1363 tport->tp_shadow_mcr = mcr; 1364 spin_unlock_irqrestore(&tport->tp_lock, flags); 1365 1366 return status; 1367 } 1368 1369 1370 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1371 { 1372 int size, status; 1373 struct ti_device *tdev = tport->tp_tdev; 1374 struct usb_serial_port *port = tport->tp_port; 1375 int port_number = port->port_number; 1376 struct ti_port_status *data; 1377 1378 size = sizeof(struct ti_port_status); 1379 data = kmalloc(size, GFP_KERNEL); 1380 if (!data) 1381 return -ENOMEM; 1382 1383 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1384 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1385 if (status) { 1386 dev_err(&port->dev, 1387 "%s - get port status command failed, %d\n", 1388 __func__, status); 1389 goto free_data; 1390 } 1391 1392 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1393 1394 *lsr = data->bLSR; 1395 1396 free_data: 1397 kfree(data); 1398 return status; 1399 } 1400 1401 1402 static int ti_get_serial_info(struct tty_struct *tty, 1403 struct serial_struct *ss) 1404 { 1405 struct usb_serial_port *port = tty->driver_data; 1406 struct ti_port *tport = usb_get_serial_port_data(port); 1407 unsigned cwait; 1408 1409 cwait = port->port.closing_wait; 1410 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1411 cwait = jiffies_to_msecs(cwait) / 10; 1412 1413 ss->type = PORT_16550A; 1414 ss->line = port->minor; 1415 ss->port = port->port_number; 1416 ss->xmit_fifo_size = kfifo_size(&port->write_fifo); 1417 ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1418 ss->closing_wait = cwait; 1419 return 0; 1420 } 1421 1422 1423 static int ti_set_serial_info(struct tty_struct *tty, 1424 struct serial_struct *ss) 1425 { 1426 struct usb_serial_port *port = tty->driver_data; 1427 struct ti_port *tport = usb_get_serial_port_data(port); 1428 unsigned cwait; 1429 1430 cwait = ss->closing_wait; 1431 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1432 cwait = msecs_to_jiffies(10 * ss->closing_wait); 1433 1434 tport->tp_port->port.closing_wait = cwait; 1435 1436 return 0; 1437 } 1438 1439 1440 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1441 { 1442 struct async_icount *icount; 1443 struct tty_struct *tty; 1444 unsigned long flags; 1445 1446 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1447 1448 if (msr & TI_MSR_DELTA_MASK) { 1449 spin_lock_irqsave(&tport->tp_lock, flags); 1450 icount = &tport->tp_port->icount; 1451 if (msr & TI_MSR_DELTA_CTS) 1452 icount->cts++; 1453 if (msr & TI_MSR_DELTA_DSR) 1454 icount->dsr++; 1455 if (msr & TI_MSR_DELTA_CD) 1456 icount->dcd++; 1457 if (msr & TI_MSR_DELTA_RI) 1458 icount->rng++; 1459 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1460 spin_unlock_irqrestore(&tport->tp_lock, flags); 1461 } 1462 1463 tport->tp_msr = msr & TI_MSR_MASK; 1464 1465 /* handle CTS flow control */ 1466 tty = tty_port_tty_get(&tport->tp_port->port); 1467 if (tty && C_CRTSCTS(tty)) { 1468 if (msr & TI_MSR_CTS) 1469 tty_wakeup(tty); 1470 } 1471 tty_kref_put(tty); 1472 } 1473 1474 1475 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1476 { 1477 unsigned long flags; 1478 1479 spin_lock_irqsave(&tport->tp_lock, flags); 1480 1481 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1482 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1483 1484 spin_unlock_irqrestore(&tport->tp_lock, flags); 1485 } 1486 1487 1488 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1489 { 1490 struct urb *urb; 1491 int status = 0; 1492 unsigned long flags; 1493 1494 spin_lock_irqsave(&tport->tp_lock, flags); 1495 1496 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1497 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1498 urb = tport->tp_port->read_urb; 1499 spin_unlock_irqrestore(&tport->tp_lock, flags); 1500 urb->context = tport; 1501 status = usb_submit_urb(urb, GFP_KERNEL); 1502 } else { 1503 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1504 spin_unlock_irqrestore(&tport->tp_lock, flags); 1505 } 1506 1507 return status; 1508 } 1509 1510 1511 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1512 __u16 moduleid, __u16 value, __u8 *data, int size) 1513 { 1514 int status; 1515 1516 status = usb_control_msg(tdev->td_serial->dev, 1517 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1518 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1519 value, moduleid, data, size, 1000); 1520 1521 if (status < 0) 1522 return status; 1523 1524 return 0; 1525 } 1526 1527 1528 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1529 __u16 moduleid, __u16 value, __u8 *data, int size) 1530 { 1531 int status; 1532 1533 status = usb_control_msg(tdev->td_serial->dev, 1534 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1535 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1536 value, moduleid, data, size, 1000); 1537 1538 if (status == size) 1539 status = 0; 1540 else if (status >= 0) 1541 status = -ECOMM; 1542 1543 return status; 1544 } 1545 1546 1547 static int ti_write_byte(struct usb_serial_port *port, 1548 struct ti_device *tdev, unsigned long addr, 1549 u8 mask, u8 byte) 1550 { 1551 int status; 1552 unsigned int size; 1553 struct ti_write_data_bytes *data; 1554 1555 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1556 addr, mask, byte); 1557 1558 size = sizeof(struct ti_write_data_bytes) + 2; 1559 data = kmalloc(size, GFP_KERNEL); 1560 if (!data) 1561 return -ENOMEM; 1562 1563 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1564 data->bDataType = TI_RW_DATA_BYTE; 1565 data->bDataCounter = 1; 1566 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1567 data->wBaseAddrLo = cpu_to_be16(addr); 1568 data->bData[0] = mask; 1569 data->bData[1] = byte; 1570 1571 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1572 (__u8 *)data, size); 1573 1574 if (status < 0) 1575 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1576 1577 kfree(data); 1578 1579 return status; 1580 } 1581 1582 static int ti_do_download(struct usb_device *dev, int pipe, 1583 u8 *buffer, int size) 1584 { 1585 int pos; 1586 u8 cs = 0; 1587 int done; 1588 struct ti_firmware_header *header; 1589 int status = 0; 1590 int len; 1591 1592 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1593 cs = (u8)(cs + buffer[pos]); 1594 1595 header = (struct ti_firmware_header *)buffer; 1596 header->wLength = cpu_to_le16(size - sizeof(*header)); 1597 header->bCheckSum = cs; 1598 1599 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1600 for (pos = 0; pos < size; pos += done) { 1601 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1602 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1603 &done, 1000); 1604 if (status) 1605 break; 1606 } 1607 return status; 1608 } 1609 1610 static int ti_download_firmware(struct ti_device *tdev) 1611 { 1612 int status; 1613 int buffer_size; 1614 u8 *buffer; 1615 struct usb_device *dev = tdev->td_serial->dev; 1616 unsigned int pipe = usb_sndbulkpipe(dev, 1617 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1618 const struct firmware *fw_p; 1619 char buf[32]; 1620 1621 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1622 snprintf(buf, 1623 sizeof(buf), 1624 "moxa/moxa-%04x.fw", 1625 le16_to_cpu(dev->descriptor.idProduct)); 1626 1627 status = request_firmware(&fw_p, buf, &dev->dev); 1628 goto check_firmware; 1629 } 1630 1631 /* try ID specific firmware first, then try generic firmware */ 1632 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1633 le16_to_cpu(dev->descriptor.idVendor), 1634 le16_to_cpu(dev->descriptor.idProduct)); 1635 status = request_firmware(&fw_p, buf, &dev->dev); 1636 1637 if (status != 0) { 1638 buf[0] = '\0'; 1639 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1640 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1641 case MTS_CDMA_PRODUCT_ID: 1642 strcpy(buf, "mts_cdma.fw"); 1643 break; 1644 case MTS_GSM_PRODUCT_ID: 1645 strcpy(buf, "mts_gsm.fw"); 1646 break; 1647 case MTS_EDGE_PRODUCT_ID: 1648 strcpy(buf, "mts_edge.fw"); 1649 break; 1650 case MTS_MT9234MU_PRODUCT_ID: 1651 strcpy(buf, "mts_mt9234mu.fw"); 1652 break; 1653 case MTS_MT9234ZBA_PRODUCT_ID: 1654 strcpy(buf, "mts_mt9234zba.fw"); 1655 break; 1656 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1657 strcpy(buf, "mts_mt9234zba.fw"); 1658 break; } 1659 } 1660 if (buf[0] == '\0') { 1661 if (tdev->td_is_3410) 1662 strcpy(buf, "ti_3410.fw"); 1663 else 1664 strcpy(buf, "ti_5052.fw"); 1665 } 1666 status = request_firmware(&fw_p, buf, &dev->dev); 1667 } 1668 1669 check_firmware: 1670 if (status) { 1671 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1672 return -ENOENT; 1673 } 1674 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1675 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1676 release_firmware(fw_p); 1677 return -ENOENT; 1678 } 1679 1680 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1681 buffer = kmalloc(buffer_size, GFP_KERNEL); 1682 if (buffer) { 1683 memcpy(buffer, fw_p->data, fw_p->size); 1684 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1685 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1686 kfree(buffer); 1687 } else { 1688 status = -ENOMEM; 1689 } 1690 release_firmware(fw_p); 1691 if (status) { 1692 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1693 __func__, status); 1694 return status; 1695 } 1696 1697 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1698 1699 return 0; 1700 } 1701