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 int ti_ioctl(struct tty_struct *tty, 317 unsigned int cmd, unsigned long arg); 318 static void ti_set_termios(struct tty_struct *tty, 319 struct usb_serial_port *port, struct ktermios *old_termios); 320 static int ti_tiocmget(struct tty_struct *tty); 321 static int ti_tiocmset(struct tty_struct *tty, 322 unsigned int set, unsigned int clear); 323 static void ti_break(struct tty_struct *tty, int break_state); 324 static void ti_interrupt_callback(struct urb *urb); 325 static void ti_bulk_in_callback(struct urb *urb); 326 static void ti_bulk_out_callback(struct urb *urb); 327 328 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 329 int length); 330 static void ti_send(struct ti_port *tport); 331 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr); 332 static int ti_get_lsr(struct ti_port *tport, u8 *lsr); 333 static int ti_get_serial_info(struct ti_port *tport, 334 struct serial_struct __user *ret_arg); 335 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, 336 struct serial_struct __user *new_arg); 337 static void ti_handle_new_msr(struct ti_port *tport, u8 msr); 338 339 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty); 340 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty); 341 342 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 343 __u16 moduleid, __u16 value, __u8 *data, int size); 344 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 345 __u16 moduleid, __u16 value, __u8 *data, int size); 346 347 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev, 348 unsigned long addr, u8 mask, u8 byte); 349 350 static int ti_download_firmware(struct ti_device *tdev); 351 352 static int closing_wait = TI_DEFAULT_CLOSING_WAIT; 353 354 static const struct usb_device_id ti_id_table_3410[] = { 355 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 356 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 357 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 358 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 359 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 360 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 361 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 362 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 363 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 364 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 365 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 366 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 367 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 368 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STEREO_PLUG_ID) }, 369 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 370 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 371 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 372 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 373 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 374 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 375 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 376 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 377 { } /* terminator */ 378 }; 379 380 static const struct usb_device_id ti_id_table_5052[] = { 381 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 382 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 383 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 384 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 385 { } 386 }; 387 388 static const struct usb_device_id ti_id_table_combined[] = { 389 { USB_DEVICE(TI_VENDOR_ID, TI_3410_PRODUCT_ID) }, 390 { USB_DEVICE(TI_VENDOR_ID, TI_3410_EZ430_ID) }, 391 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_NO_FW_PRODUCT_ID) }, 392 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_NO_FW_PRODUCT_ID) }, 393 { USB_DEVICE(MTS_VENDOR_ID, MTS_CDMA_PRODUCT_ID) }, 394 { USB_DEVICE(MTS_VENDOR_ID, MTS_GSM_PRODUCT_ID) }, 395 { USB_DEVICE(MTS_VENDOR_ID, MTS_EDGE_PRODUCT_ID) }, 396 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234MU_PRODUCT_ID) }, 397 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBA_PRODUCT_ID) }, 398 { USB_DEVICE(MTS_VENDOR_ID, MTS_MT9234ZBAOLD_PRODUCT_ID) }, 399 { USB_DEVICE(TI_VENDOR_ID, TI_5052_BOOT_PRODUCT_ID) }, 400 { USB_DEVICE(TI_VENDOR_ID, TI_5152_BOOT_PRODUCT_ID) }, 401 { USB_DEVICE(TI_VENDOR_ID, TI_5052_EEPROM_PRODUCT_ID) }, 402 { USB_DEVICE(TI_VENDOR_ID, TI_5052_FIRMWARE_PRODUCT_ID) }, 403 { USB_DEVICE(IBM_VENDOR_ID, IBM_4543_PRODUCT_ID) }, 404 { USB_DEVICE(IBM_VENDOR_ID, IBM_454B_PRODUCT_ID) }, 405 { USB_DEVICE(IBM_VENDOR_ID, IBM_454C_PRODUCT_ID) }, 406 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_PRODUCT_ID) }, 407 { USB_DEVICE(ABBOTT_VENDOR_ID, ABBOTT_STRIP_PORT_ID) }, 408 { USB_DEVICE(TI_VENDOR_ID, FRI2_PRODUCT_ID) }, 409 { USB_DEVICE(HONEYWELL_VENDOR_ID, HONEYWELL_HGI80_PRODUCT_ID) }, 410 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1110_PRODUCT_ID) }, 411 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1130_PRODUCT_ID) }, 412 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1131_PRODUCT_ID) }, 413 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1150_PRODUCT_ID) }, 414 { USB_DEVICE(MXU1_VENDOR_ID, MXU1_1151_PRODUCT_ID) }, 415 { } /* terminator */ 416 }; 417 418 static struct usb_serial_driver ti_1port_device = { 419 .driver = { 420 .owner = THIS_MODULE, 421 .name = "ti_usb_3410_5052_1", 422 }, 423 .description = "TI USB 3410 1 port adapter", 424 .id_table = ti_id_table_3410, 425 .num_ports = 1, 426 .num_bulk_out = 1, 427 .attach = ti_startup, 428 .release = ti_release, 429 .port_probe = ti_port_probe, 430 .port_remove = ti_port_remove, 431 .open = ti_open, 432 .close = ti_close, 433 .write = ti_write, 434 .write_room = ti_write_room, 435 .chars_in_buffer = ti_chars_in_buffer, 436 .tx_empty = ti_tx_empty, 437 .throttle = ti_throttle, 438 .unthrottle = ti_unthrottle, 439 .ioctl = ti_ioctl, 440 .set_termios = ti_set_termios, 441 .tiocmget = ti_tiocmget, 442 .tiocmset = ti_tiocmset, 443 .tiocmiwait = usb_serial_generic_tiocmiwait, 444 .get_icount = usb_serial_generic_get_icount, 445 .break_ctl = ti_break, 446 .read_int_callback = ti_interrupt_callback, 447 .read_bulk_callback = ti_bulk_in_callback, 448 .write_bulk_callback = ti_bulk_out_callback, 449 }; 450 451 static struct usb_serial_driver ti_2port_device = { 452 .driver = { 453 .owner = THIS_MODULE, 454 .name = "ti_usb_3410_5052_2", 455 }, 456 .description = "TI USB 5052 2 port adapter", 457 .id_table = ti_id_table_5052, 458 .num_ports = 2, 459 .num_bulk_out = 1, 460 .attach = ti_startup, 461 .release = ti_release, 462 .port_probe = ti_port_probe, 463 .port_remove = ti_port_remove, 464 .open = ti_open, 465 .close = ti_close, 466 .write = ti_write, 467 .write_room = ti_write_room, 468 .chars_in_buffer = ti_chars_in_buffer, 469 .tx_empty = ti_tx_empty, 470 .throttle = ti_throttle, 471 .unthrottle = ti_unthrottle, 472 .ioctl = ti_ioctl, 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 int ti_ioctl(struct tty_struct *tty, 906 unsigned int cmd, unsigned long arg) 907 { 908 struct usb_serial_port *port = tty->driver_data; 909 struct ti_port *tport = usb_get_serial_port_data(port); 910 911 switch (cmd) { 912 case TIOCGSERIAL: 913 return ti_get_serial_info(tport, 914 (struct serial_struct __user *)arg); 915 case TIOCSSERIAL: 916 return ti_set_serial_info(tty, tport, 917 (struct serial_struct __user *)arg); 918 } 919 return -ENOIOCTLCMD; 920 } 921 922 923 static void ti_set_termios(struct tty_struct *tty, 924 struct usb_serial_port *port, struct ktermios *old_termios) 925 { 926 struct ti_port *tport = usb_get_serial_port_data(port); 927 struct ti_uart_config *config; 928 int baud; 929 int status; 930 int port_number = port->port_number; 931 unsigned int mcr; 932 u16 wbaudrate; 933 u16 wflags = 0; 934 935 config = kmalloc(sizeof(*config), GFP_KERNEL); 936 if (!config) 937 return; 938 939 /* these flags must be set */ 940 wflags |= TI_UART_ENABLE_MS_INTS; 941 wflags |= TI_UART_ENABLE_AUTO_START_DMA; 942 config->bUartMode = tport->tp_uart_mode; 943 944 switch (C_CSIZE(tty)) { 945 case CS5: 946 config->bDataBits = TI_UART_5_DATA_BITS; 947 break; 948 case CS6: 949 config->bDataBits = TI_UART_6_DATA_BITS; 950 break; 951 case CS7: 952 config->bDataBits = TI_UART_7_DATA_BITS; 953 break; 954 default: 955 case CS8: 956 config->bDataBits = TI_UART_8_DATA_BITS; 957 break; 958 } 959 960 /* CMSPAR isn't supported by this driver */ 961 tty->termios.c_cflag &= ~CMSPAR; 962 963 if (C_PARENB(tty)) { 964 if (C_PARODD(tty)) { 965 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 966 config->bParity = TI_UART_ODD_PARITY; 967 } else { 968 wflags |= TI_UART_ENABLE_PARITY_CHECKING; 969 config->bParity = TI_UART_EVEN_PARITY; 970 } 971 } else { 972 wflags &= ~TI_UART_ENABLE_PARITY_CHECKING; 973 config->bParity = TI_UART_NO_PARITY; 974 } 975 976 if (C_CSTOPB(tty)) 977 config->bStopBits = TI_UART_2_STOP_BITS; 978 else 979 config->bStopBits = TI_UART_1_STOP_BITS; 980 981 if (C_CRTSCTS(tty)) { 982 /* RTS flow control must be off to drop RTS for baud rate B0 */ 983 if ((C_BAUD(tty)) != B0) 984 wflags |= TI_UART_ENABLE_RTS_IN; 985 wflags |= TI_UART_ENABLE_CTS_OUT; 986 } else { 987 ti_restart_read(tport, tty); 988 } 989 990 if (I_IXOFF(tty) || I_IXON(tty)) { 991 config->cXon = START_CHAR(tty); 992 config->cXoff = STOP_CHAR(tty); 993 994 if (I_IXOFF(tty)) 995 wflags |= TI_UART_ENABLE_X_IN; 996 else 997 ti_restart_read(tport, tty); 998 999 if (I_IXON(tty)) 1000 wflags |= TI_UART_ENABLE_X_OUT; 1001 } 1002 1003 baud = tty_get_baud_rate(tty); 1004 if (!baud) 1005 baud = 9600; 1006 if (tport->tp_tdev->td_is_3410) 1007 wbaudrate = (923077 + baud/2) / baud; 1008 else 1009 wbaudrate = (461538 + baud/2) / baud; 1010 1011 /* FIXME: Should calculate resulting baud here and report it back */ 1012 if ((C_BAUD(tty)) != B0) 1013 tty_encode_baud_rate(tty, baud, baud); 1014 1015 dev_dbg(&port->dev, 1016 "%s - BaudRate=%d, wBaudRate=%d, wFlags=0x%04X, bDataBits=%d, bParity=%d, bStopBits=%d, cXon=%d, cXoff=%d, bUartMode=%d\n", 1017 __func__, baud, wbaudrate, wflags, 1018 config->bDataBits, config->bParity, config->bStopBits, 1019 config->cXon, config->cXoff, config->bUartMode); 1020 1021 config->wBaudRate = cpu_to_be16(wbaudrate); 1022 config->wFlags = cpu_to_be16(wflags); 1023 1024 status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG, 1025 (__u8)(TI_UART1_PORT + port_number), 0, (__u8 *)config, 1026 sizeof(*config)); 1027 if (status) 1028 dev_err(&port->dev, "%s - cannot set config on port %d, %d\n", 1029 __func__, port_number, status); 1030 1031 /* SET_CONFIG asserts RTS and DTR, reset them correctly */ 1032 mcr = tport->tp_shadow_mcr; 1033 /* if baud rate is B0, clear RTS and DTR */ 1034 if (C_BAUD(tty) == B0) 1035 mcr &= ~(TI_MCR_DTR | TI_MCR_RTS); 1036 status = ti_set_mcr(tport, mcr); 1037 if (status) 1038 dev_err(&port->dev, 1039 "%s - cannot set modem control on port %d, %d\n", 1040 __func__, port_number, status); 1041 1042 kfree(config); 1043 } 1044 1045 1046 static int ti_tiocmget(struct tty_struct *tty) 1047 { 1048 struct usb_serial_port *port = tty->driver_data; 1049 struct ti_port *tport = usb_get_serial_port_data(port); 1050 unsigned int result; 1051 unsigned int msr; 1052 unsigned int mcr; 1053 unsigned long flags; 1054 1055 spin_lock_irqsave(&tport->tp_lock, flags); 1056 msr = tport->tp_msr; 1057 mcr = tport->tp_shadow_mcr; 1058 spin_unlock_irqrestore(&tport->tp_lock, flags); 1059 1060 result = ((mcr & TI_MCR_DTR) ? TIOCM_DTR : 0) 1061 | ((mcr & TI_MCR_RTS) ? TIOCM_RTS : 0) 1062 | ((mcr & TI_MCR_LOOP) ? TIOCM_LOOP : 0) 1063 | ((msr & TI_MSR_CTS) ? TIOCM_CTS : 0) 1064 | ((msr & TI_MSR_CD) ? TIOCM_CAR : 0) 1065 | ((msr & TI_MSR_RI) ? TIOCM_RI : 0) 1066 | ((msr & TI_MSR_DSR) ? TIOCM_DSR : 0); 1067 1068 dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); 1069 1070 return result; 1071 } 1072 1073 1074 static int ti_tiocmset(struct tty_struct *tty, 1075 unsigned int set, unsigned int clear) 1076 { 1077 struct usb_serial_port *port = tty->driver_data; 1078 struct ti_port *tport = usb_get_serial_port_data(port); 1079 unsigned int mcr; 1080 unsigned long flags; 1081 1082 spin_lock_irqsave(&tport->tp_lock, flags); 1083 mcr = tport->tp_shadow_mcr; 1084 1085 if (set & TIOCM_RTS) 1086 mcr |= TI_MCR_RTS; 1087 if (set & TIOCM_DTR) 1088 mcr |= TI_MCR_DTR; 1089 if (set & TIOCM_LOOP) 1090 mcr |= TI_MCR_LOOP; 1091 1092 if (clear & TIOCM_RTS) 1093 mcr &= ~TI_MCR_RTS; 1094 if (clear & TIOCM_DTR) 1095 mcr &= ~TI_MCR_DTR; 1096 if (clear & TIOCM_LOOP) 1097 mcr &= ~TI_MCR_LOOP; 1098 spin_unlock_irqrestore(&tport->tp_lock, flags); 1099 1100 return ti_set_mcr(tport, mcr); 1101 } 1102 1103 1104 static void ti_break(struct tty_struct *tty, int break_state) 1105 { 1106 struct usb_serial_port *port = tty->driver_data; 1107 struct ti_port *tport = usb_get_serial_port_data(port); 1108 int status; 1109 1110 dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state); 1111 1112 status = ti_write_byte(port, tport->tp_tdev, 1113 tport->tp_uart_base_addr + TI_UART_OFFSET_LCR, 1114 TI_LCR_BREAK, break_state == -1 ? TI_LCR_BREAK : 0); 1115 1116 if (status) 1117 dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status); 1118 } 1119 1120 static int ti_get_port_from_code(unsigned char code) 1121 { 1122 return (code >> 4) - 3; 1123 } 1124 1125 static int ti_get_func_from_code(unsigned char code) 1126 { 1127 return code & 0x0f; 1128 } 1129 1130 static void ti_interrupt_callback(struct urb *urb) 1131 { 1132 struct ti_device *tdev = urb->context; 1133 struct usb_serial_port *port; 1134 struct usb_serial *serial = tdev->td_serial; 1135 struct ti_port *tport; 1136 struct device *dev = &urb->dev->dev; 1137 unsigned char *data = urb->transfer_buffer; 1138 int length = urb->actual_length; 1139 int port_number; 1140 int function; 1141 int status = urb->status; 1142 int retval; 1143 u8 msr; 1144 1145 switch (status) { 1146 case 0: 1147 break; 1148 case -ECONNRESET: 1149 case -ENOENT: 1150 case -ESHUTDOWN: 1151 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1152 return; 1153 default: 1154 dev_err(dev, "%s - nonzero urb status, %d\n", __func__, status); 1155 goto exit; 1156 } 1157 1158 if (length != 2) { 1159 dev_dbg(dev, "%s - bad packet size, %d\n", __func__, length); 1160 goto exit; 1161 } 1162 1163 if (data[0] == TI_CODE_HARDWARE_ERROR) { 1164 dev_err(dev, "%s - hardware error, %d\n", __func__, data[1]); 1165 goto exit; 1166 } 1167 1168 port_number = ti_get_port_from_code(data[0]); 1169 function = ti_get_func_from_code(data[0]); 1170 1171 dev_dbg(dev, "%s - port_number %d, function %d, data 0x%02X\n", 1172 __func__, port_number, function, data[1]); 1173 1174 if (port_number >= serial->num_ports) { 1175 dev_err(dev, "%s - bad port number, %d\n", 1176 __func__, port_number); 1177 goto exit; 1178 } 1179 1180 port = serial->port[port_number]; 1181 1182 tport = usb_get_serial_port_data(port); 1183 if (!tport) 1184 goto exit; 1185 1186 switch (function) { 1187 case TI_CODE_DATA_ERROR: 1188 dev_err(dev, "%s - DATA ERROR, port %d, data 0x%02X\n", 1189 __func__, port_number, data[1]); 1190 break; 1191 1192 case TI_CODE_MODEM_STATUS: 1193 msr = data[1]; 1194 dev_dbg(dev, "%s - port %d, msr 0x%02X\n", __func__, port_number, msr); 1195 ti_handle_new_msr(tport, msr); 1196 break; 1197 1198 default: 1199 dev_err(dev, "%s - unknown interrupt code, 0x%02X\n", 1200 __func__, data[1]); 1201 break; 1202 } 1203 1204 exit: 1205 retval = usb_submit_urb(urb, GFP_ATOMIC); 1206 if (retval) 1207 dev_err(dev, "%s - resubmit interrupt urb failed, %d\n", 1208 __func__, retval); 1209 } 1210 1211 1212 static void ti_bulk_in_callback(struct urb *urb) 1213 { 1214 struct ti_port *tport = urb->context; 1215 struct usb_serial_port *port = tport->tp_port; 1216 struct device *dev = &urb->dev->dev; 1217 int status = urb->status; 1218 unsigned long flags; 1219 int retval = 0; 1220 1221 switch (status) { 1222 case 0: 1223 break; 1224 case -ECONNRESET: 1225 case -ENOENT: 1226 case -ESHUTDOWN: 1227 dev_dbg(dev, "%s - urb shutting down, %d\n", __func__, status); 1228 return; 1229 default: 1230 dev_err(dev, "%s - nonzero urb status, %d\n", 1231 __func__, status); 1232 } 1233 1234 if (status == -EPIPE) 1235 goto exit; 1236 1237 if (status) { 1238 dev_err(dev, "%s - stopping read!\n", __func__); 1239 return; 1240 } 1241 1242 if (urb->actual_length) { 1243 usb_serial_debug_data(dev, __func__, urb->actual_length, 1244 urb->transfer_buffer); 1245 1246 if (!tport->tp_is_open) 1247 dev_dbg(dev, "%s - port closed, dropping data\n", 1248 __func__); 1249 else 1250 ti_recv(port, urb->transfer_buffer, urb->actual_length); 1251 spin_lock_irqsave(&tport->tp_lock, flags); 1252 port->icount.rx += urb->actual_length; 1253 spin_unlock_irqrestore(&tport->tp_lock, flags); 1254 } 1255 1256 exit: 1257 /* continue to read unless stopping */ 1258 spin_lock_irqsave(&tport->tp_lock, flags); 1259 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1260 retval = usb_submit_urb(urb, GFP_ATOMIC); 1261 else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) 1262 tport->tp_read_urb_state = TI_READ_URB_STOPPED; 1263 1264 spin_unlock_irqrestore(&tport->tp_lock, flags); 1265 if (retval) 1266 dev_err(dev, "%s - resubmit read urb failed, %d\n", 1267 __func__, retval); 1268 } 1269 1270 1271 static void ti_bulk_out_callback(struct urb *urb) 1272 { 1273 struct ti_port *tport = urb->context; 1274 struct usb_serial_port *port = tport->tp_port; 1275 int status = urb->status; 1276 1277 tport->tp_write_urb_in_use = 0; 1278 1279 switch (status) { 1280 case 0: 1281 break; 1282 case -ECONNRESET: 1283 case -ENOENT: 1284 case -ESHUTDOWN: 1285 dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status); 1286 return; 1287 default: 1288 dev_err_console(port, "%s - nonzero urb status, %d\n", 1289 __func__, status); 1290 } 1291 1292 /* send any buffered data */ 1293 ti_send(tport); 1294 } 1295 1296 1297 static void ti_recv(struct usb_serial_port *port, unsigned char *data, 1298 int length) 1299 { 1300 int cnt; 1301 1302 do { 1303 cnt = tty_insert_flip_string(&port->port, data, length); 1304 if (cnt < length) { 1305 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1306 __func__, length - cnt); 1307 if (cnt == 0) 1308 break; 1309 } 1310 tty_flip_buffer_push(&port->port); 1311 data += cnt; 1312 length -= cnt; 1313 } while (length > 0); 1314 } 1315 1316 1317 static void ti_send(struct ti_port *tport) 1318 { 1319 int count, result; 1320 struct usb_serial_port *port = tport->tp_port; 1321 unsigned long flags; 1322 1323 spin_lock_irqsave(&tport->tp_lock, flags); 1324 1325 if (tport->tp_write_urb_in_use) 1326 goto unlock; 1327 1328 count = kfifo_out(&port->write_fifo, 1329 port->write_urb->transfer_buffer, 1330 port->bulk_out_size); 1331 1332 if (count == 0) 1333 goto unlock; 1334 1335 tport->tp_write_urb_in_use = 1; 1336 1337 spin_unlock_irqrestore(&tport->tp_lock, flags); 1338 1339 usb_serial_debug_data(&port->dev, __func__, count, 1340 port->write_urb->transfer_buffer); 1341 1342 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 1343 usb_sndbulkpipe(port->serial->dev, 1344 port->bulk_out_endpointAddress), 1345 port->write_urb->transfer_buffer, count, 1346 ti_bulk_out_callback, tport); 1347 1348 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1349 if (result) { 1350 dev_err_console(port, "%s - submit write urb failed, %d\n", 1351 __func__, result); 1352 tport->tp_write_urb_in_use = 0; 1353 /* TODO: reschedule ti_send */ 1354 } else { 1355 spin_lock_irqsave(&tport->tp_lock, flags); 1356 port->icount.tx += count; 1357 spin_unlock_irqrestore(&tport->tp_lock, flags); 1358 } 1359 1360 /* more room in the buffer for new writes, wakeup */ 1361 tty_port_tty_wakeup(&port->port); 1362 1363 return; 1364 unlock: 1365 spin_unlock_irqrestore(&tport->tp_lock, flags); 1366 return; 1367 } 1368 1369 1370 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr) 1371 { 1372 unsigned long flags; 1373 int status; 1374 1375 status = ti_write_byte(tport->tp_port, tport->tp_tdev, 1376 tport->tp_uart_base_addr + TI_UART_OFFSET_MCR, 1377 TI_MCR_RTS | TI_MCR_DTR | TI_MCR_LOOP, mcr); 1378 1379 spin_lock_irqsave(&tport->tp_lock, flags); 1380 if (!status) 1381 tport->tp_shadow_mcr = mcr; 1382 spin_unlock_irqrestore(&tport->tp_lock, flags); 1383 1384 return status; 1385 } 1386 1387 1388 static int ti_get_lsr(struct ti_port *tport, u8 *lsr) 1389 { 1390 int size, status; 1391 struct ti_device *tdev = tport->tp_tdev; 1392 struct usb_serial_port *port = tport->tp_port; 1393 int port_number = port->port_number; 1394 struct ti_port_status *data; 1395 1396 size = sizeof(struct ti_port_status); 1397 data = kmalloc(size, GFP_KERNEL); 1398 if (!data) 1399 return -ENOMEM; 1400 1401 status = ti_command_in_sync(tdev, TI_GET_PORT_STATUS, 1402 (__u8)(TI_UART1_PORT+port_number), 0, (__u8 *)data, size); 1403 if (status) { 1404 dev_err(&port->dev, 1405 "%s - get port status command failed, %d\n", 1406 __func__, status); 1407 goto free_data; 1408 } 1409 1410 dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR); 1411 1412 *lsr = data->bLSR; 1413 1414 free_data: 1415 kfree(data); 1416 return status; 1417 } 1418 1419 1420 static int ti_get_serial_info(struct ti_port *tport, 1421 struct serial_struct __user *ret_arg) 1422 { 1423 struct usb_serial_port *port = tport->tp_port; 1424 struct serial_struct ret_serial; 1425 unsigned cwait; 1426 1427 cwait = port->port.closing_wait; 1428 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1429 cwait = jiffies_to_msecs(cwait) / 10; 1430 1431 memset(&ret_serial, 0, sizeof(ret_serial)); 1432 1433 ret_serial.type = PORT_16550A; 1434 ret_serial.line = port->minor; 1435 ret_serial.port = port->port_number; 1436 ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo); 1437 ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800; 1438 ret_serial.closing_wait = cwait; 1439 1440 if (copy_to_user(ret_arg, &ret_serial, sizeof(*ret_arg))) 1441 return -EFAULT; 1442 1443 return 0; 1444 } 1445 1446 1447 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport, 1448 struct serial_struct __user *new_arg) 1449 { 1450 struct serial_struct new_serial; 1451 unsigned cwait; 1452 1453 if (copy_from_user(&new_serial, new_arg, sizeof(new_serial))) 1454 return -EFAULT; 1455 1456 cwait = new_serial.closing_wait; 1457 if (cwait != ASYNC_CLOSING_WAIT_NONE) 1458 cwait = msecs_to_jiffies(10 * new_serial.closing_wait); 1459 1460 tport->tp_port->port.closing_wait = cwait; 1461 1462 return 0; 1463 } 1464 1465 1466 static void ti_handle_new_msr(struct ti_port *tport, u8 msr) 1467 { 1468 struct async_icount *icount; 1469 struct tty_struct *tty; 1470 unsigned long flags; 1471 1472 dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr); 1473 1474 if (msr & TI_MSR_DELTA_MASK) { 1475 spin_lock_irqsave(&tport->tp_lock, flags); 1476 icount = &tport->tp_port->icount; 1477 if (msr & TI_MSR_DELTA_CTS) 1478 icount->cts++; 1479 if (msr & TI_MSR_DELTA_DSR) 1480 icount->dsr++; 1481 if (msr & TI_MSR_DELTA_CD) 1482 icount->dcd++; 1483 if (msr & TI_MSR_DELTA_RI) 1484 icount->rng++; 1485 wake_up_interruptible(&tport->tp_port->port.delta_msr_wait); 1486 spin_unlock_irqrestore(&tport->tp_lock, flags); 1487 } 1488 1489 tport->tp_msr = msr & TI_MSR_MASK; 1490 1491 /* handle CTS flow control */ 1492 tty = tty_port_tty_get(&tport->tp_port->port); 1493 if (tty && C_CRTSCTS(tty)) { 1494 if (msr & TI_MSR_CTS) 1495 tty_wakeup(tty); 1496 } 1497 tty_kref_put(tty); 1498 } 1499 1500 1501 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty) 1502 { 1503 unsigned long flags; 1504 1505 spin_lock_irqsave(&tport->tp_lock, flags); 1506 1507 if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) 1508 tport->tp_read_urb_state = TI_READ_URB_STOPPING; 1509 1510 spin_unlock_irqrestore(&tport->tp_lock, flags); 1511 } 1512 1513 1514 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty) 1515 { 1516 struct urb *urb; 1517 int status = 0; 1518 unsigned long flags; 1519 1520 spin_lock_irqsave(&tport->tp_lock, flags); 1521 1522 if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) { 1523 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1524 urb = tport->tp_port->read_urb; 1525 spin_unlock_irqrestore(&tport->tp_lock, flags); 1526 urb->context = tport; 1527 status = usb_submit_urb(urb, GFP_KERNEL); 1528 } else { 1529 tport->tp_read_urb_state = TI_READ_URB_RUNNING; 1530 spin_unlock_irqrestore(&tport->tp_lock, flags); 1531 } 1532 1533 return status; 1534 } 1535 1536 1537 static int ti_command_out_sync(struct ti_device *tdev, __u8 command, 1538 __u16 moduleid, __u16 value, __u8 *data, int size) 1539 { 1540 int status; 1541 1542 status = usb_control_msg(tdev->td_serial->dev, 1543 usb_sndctrlpipe(tdev->td_serial->dev, 0), command, 1544 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 1545 value, moduleid, data, size, 1000); 1546 1547 if (status < 0) 1548 return status; 1549 1550 return 0; 1551 } 1552 1553 1554 static int ti_command_in_sync(struct ti_device *tdev, __u8 command, 1555 __u16 moduleid, __u16 value, __u8 *data, int size) 1556 { 1557 int status; 1558 1559 status = usb_control_msg(tdev->td_serial->dev, 1560 usb_rcvctrlpipe(tdev->td_serial->dev, 0), command, 1561 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 1562 value, moduleid, data, size, 1000); 1563 1564 if (status == size) 1565 status = 0; 1566 else if (status >= 0) 1567 status = -ECOMM; 1568 1569 return status; 1570 } 1571 1572 1573 static int ti_write_byte(struct usb_serial_port *port, 1574 struct ti_device *tdev, unsigned long addr, 1575 u8 mask, u8 byte) 1576 { 1577 int status; 1578 unsigned int size; 1579 struct ti_write_data_bytes *data; 1580 1581 dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__, 1582 addr, mask, byte); 1583 1584 size = sizeof(struct ti_write_data_bytes) + 2; 1585 data = kmalloc(size, GFP_KERNEL); 1586 if (!data) 1587 return -ENOMEM; 1588 1589 data->bAddrType = TI_RW_DATA_ADDR_XDATA; 1590 data->bDataType = TI_RW_DATA_BYTE; 1591 data->bDataCounter = 1; 1592 data->wBaseAddrHi = cpu_to_be16(addr>>16); 1593 data->wBaseAddrLo = cpu_to_be16(addr); 1594 data->bData[0] = mask; 1595 data->bData[1] = byte; 1596 1597 status = ti_command_out_sync(tdev, TI_WRITE_DATA, TI_RAM_PORT, 0, 1598 (__u8 *)data, size); 1599 1600 if (status < 0) 1601 dev_err(&port->dev, "%s - failed, %d\n", __func__, status); 1602 1603 kfree(data); 1604 1605 return status; 1606 } 1607 1608 static int ti_do_download(struct usb_device *dev, int pipe, 1609 u8 *buffer, int size) 1610 { 1611 int pos; 1612 u8 cs = 0; 1613 int done; 1614 struct ti_firmware_header *header; 1615 int status = 0; 1616 int len; 1617 1618 for (pos = sizeof(struct ti_firmware_header); pos < size; pos++) 1619 cs = (u8)(cs + buffer[pos]); 1620 1621 header = (struct ti_firmware_header *)buffer; 1622 header->wLength = cpu_to_le16(size - sizeof(*header)); 1623 header->bCheckSum = cs; 1624 1625 dev_dbg(&dev->dev, "%s - downloading firmware\n", __func__); 1626 for (pos = 0; pos < size; pos += done) { 1627 len = min(size - pos, TI_DOWNLOAD_MAX_PACKET_SIZE); 1628 status = usb_bulk_msg(dev, pipe, buffer + pos, len, 1629 &done, 1000); 1630 if (status) 1631 break; 1632 } 1633 return status; 1634 } 1635 1636 static int ti_download_firmware(struct ti_device *tdev) 1637 { 1638 int status; 1639 int buffer_size; 1640 u8 *buffer; 1641 struct usb_device *dev = tdev->td_serial->dev; 1642 unsigned int pipe = usb_sndbulkpipe(dev, 1643 tdev->td_serial->port[0]->bulk_out_endpointAddress); 1644 const struct firmware *fw_p; 1645 char buf[32]; 1646 1647 if (le16_to_cpu(dev->descriptor.idVendor) == MXU1_VENDOR_ID) { 1648 snprintf(buf, 1649 sizeof(buf), 1650 "moxa/moxa-%04x.fw", 1651 le16_to_cpu(dev->descriptor.idProduct)); 1652 1653 status = request_firmware(&fw_p, buf, &dev->dev); 1654 goto check_firmware; 1655 } 1656 1657 /* try ID specific firmware first, then try generic firmware */ 1658 sprintf(buf, "ti_usb-v%04x-p%04x.fw", 1659 le16_to_cpu(dev->descriptor.idVendor), 1660 le16_to_cpu(dev->descriptor.idProduct)); 1661 status = request_firmware(&fw_p, buf, &dev->dev); 1662 1663 if (status != 0) { 1664 buf[0] = '\0'; 1665 if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) { 1666 switch (le16_to_cpu(dev->descriptor.idProduct)) { 1667 case MTS_CDMA_PRODUCT_ID: 1668 strcpy(buf, "mts_cdma.fw"); 1669 break; 1670 case MTS_GSM_PRODUCT_ID: 1671 strcpy(buf, "mts_gsm.fw"); 1672 break; 1673 case MTS_EDGE_PRODUCT_ID: 1674 strcpy(buf, "mts_edge.fw"); 1675 break; 1676 case MTS_MT9234MU_PRODUCT_ID: 1677 strcpy(buf, "mts_mt9234mu.fw"); 1678 break; 1679 case MTS_MT9234ZBA_PRODUCT_ID: 1680 strcpy(buf, "mts_mt9234zba.fw"); 1681 break; 1682 case MTS_MT9234ZBAOLD_PRODUCT_ID: 1683 strcpy(buf, "mts_mt9234zba.fw"); 1684 break; } 1685 } 1686 if (buf[0] == '\0') { 1687 if (tdev->td_is_3410) 1688 strcpy(buf, "ti_3410.fw"); 1689 else 1690 strcpy(buf, "ti_5052.fw"); 1691 } 1692 status = request_firmware(&fw_p, buf, &dev->dev); 1693 } 1694 1695 check_firmware: 1696 if (status) { 1697 dev_err(&dev->dev, "%s - firmware not found\n", __func__); 1698 return -ENOENT; 1699 } 1700 if (fw_p->size > TI_FIRMWARE_BUF_SIZE) { 1701 dev_err(&dev->dev, "%s - firmware too large %zu\n", __func__, fw_p->size); 1702 release_firmware(fw_p); 1703 return -ENOENT; 1704 } 1705 1706 buffer_size = TI_FIRMWARE_BUF_SIZE + sizeof(struct ti_firmware_header); 1707 buffer = kmalloc(buffer_size, GFP_KERNEL); 1708 if (buffer) { 1709 memcpy(buffer, fw_p->data, fw_p->size); 1710 memset(buffer + fw_p->size, 0xff, buffer_size - fw_p->size); 1711 status = ti_do_download(dev, pipe, buffer, fw_p->size); 1712 kfree(buffer); 1713 } else { 1714 status = -ENOMEM; 1715 } 1716 release_firmware(fw_p); 1717 if (status) { 1718 dev_err(&dev->dev, "%s - error downloading firmware, %d\n", 1719 __func__, status); 1720 return status; 1721 } 1722 1723 dev_dbg(&dev->dev, "%s - download successful\n", __func__); 1724 1725 return 0; 1726 } 1727