1 /* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * Edgeport/4 14 * Edgeport/4t 15 * Edgeport/2 16 * Edgeport/4i 17 * Edgeport/2i 18 * Edgeport/421 19 * Edgeport/21 20 * Rapidport/4 21 * Edgeport/8 22 * Edgeport/2D8 23 * Edgeport/4D8 24 * Edgeport/8i 25 * 26 * For questions or problems with this driver, contact Inside Out 27 * Networks technical support, or Peter Berger <pberger@brimson.com>, 28 * or Al Borchers <alborchers@steinerpoint.com>. 29 * 30 * Version history: 31 * 32 * 2003_04_03 al borchers 33 * - fixed a bug (that shows up with dosemu) where the tty struct is 34 * used in a callback after it has been freed 35 * 36 * 2.3 2002_03_08 greg kroah-hartman 37 * - fixed bug when multiple devices were attached at the same time. 38 * 39 * 2.2 2001_11_14 greg kroah-hartman 40 * - fixed bug in edge_close that kept the port from being used more 41 * than once. 42 * - fixed memory leak on device removal. 43 * - fixed potential double free of memory when command urb submitting 44 * failed. 45 * - other small cleanups when the device is removed 46 * 47 * 2.1 2001_07_09 greg kroah-hartman 48 * - added support for TIOCMBIS and TIOCMBIC. 49 * 50 * (04/08/2001) gb 51 * - Identify version on module load. 52 * 53 * 2.0 2001_03_05 greg kroah-hartman 54 * - reworked entire driver to fit properly in with the other usb-serial 55 * drivers. Occasional oopses still happen, but it's a good start. 56 * 57 * 1.2.3 (02/23/2001) greg kroah-hartman 58 * - changed device table to work properly for 2.4.x final format. 59 * - fixed problem with dropping data at high data rates. 60 * 61 * 1.2.2 (11/27/2000) greg kroah-hartman 62 * - cleaned up more NTisms. 63 * - Added device table for 2.4.0-test11 64 * 65 * 1.2.1 (11/08/2000) greg kroah-hartman 66 * - Started to clean up NTisms. 67 * - Fixed problem with dev field of urb for kernels >= 2.4.0-test9 68 * 69 * 1.2 (10/17/2000) David Iacovelli 70 * Remove all EPIC code and GPL source 71 * Fix RELEVANT_IFLAG macro to include flow control 72 * changes port configuration changes. 73 * Fix redefinition of SERIAL_MAGIC 74 * Change all timeout values to 5 seconds 75 * Tried to fix the UHCI multiple urb submission, but failed miserably. 76 * it seems to work fine with OHCI. 77 * ( Greg take a look at the #if 0 at end of WriteCmdUsb() we must 78 * find a way to work arount this UHCI bug ) 79 * 80 * 1.1 (10/11/2000) David Iacovelli 81 * Fix XON/XOFF flow control to support both IXON and IXOFF 82 * 83 * 0.9.27 (06/30/2000) David Iacovelli 84 * Added transmit queue and now allocate urb for command writes. 85 * 86 * 0.9.26 (06/29/2000) David Iacovelli 87 * Add support for 80251 based edgeport 88 * 89 * 0.9.25 (06/27/2000) David Iacovelli 90 * Do not close the port if it has multiple opens. 91 * 92 * 0.9.24 (05/26/2000) David Iacovelli 93 * Add IOCTLs to support RXTX and JAVA POS 94 * and first cut at running BlackBox Demo 95 * 96 * 0.9.23 (05/24/2000) David Iacovelli 97 * Add IOCTLs to support RXTX and JAVA POS 98 * 99 * 0.9.22 (05/23/2000) David Iacovelli 100 * fixed bug in enumeration. If epconfig turns on mapping by 101 * path after a device is already plugged in, we now update 102 * the mapping correctly 103 * 104 * 0.9.21 (05/16/2000) David Iacovelli 105 * Added BlockUntilChaseResp() to also wait for txcredits 106 * Updated the way we allocate and handle write URBs 107 * Add debug code to dump buffers 108 * 109 * 0.9.20 (05/01/2000) David Iacovelli 110 * change driver to use usb/tts/ 111 * 112 * 0.9.19 (05/01/2000) David Iacovelli 113 * Update code to compile if DEBUG is off 114 * 115 * 0.9.18 (04/28/2000) David Iacovelli 116 * cleanup and test tty_register with devfs 117 * 118 * 0.9.17 (04/27/2000) greg kroah-hartman 119 * changed tty_register around to be like the way it 120 * was before, but now it works properly with devfs. 121 * 122 * 0.9.16 (04/26/2000) david iacovelli 123 * Fixed bug in GetProductInfo() 124 * 125 * 0.9.15 (04/25/2000) david iacovelli 126 * Updated enumeration 127 * 128 * 0.9.14 (04/24/2000) david iacovelli 129 * Removed all config/status IOCTLS and 130 * converted to using /proc/edgeport 131 * still playing with devfs 132 * 133 * 0.9.13 (04/24/2000) david iacovelli 134 * Removed configuration based on ttyUSB0 135 * Added support for configuration using /prod/edgeport 136 * first attempt at using devfs (not working yet!) 137 * Added IOCTL to GetProductInfo() 138 * Added support for custom baud rates 139 * Add support for random port numbers 140 * 141 * 0.9.12 (04/18/2000) david iacovelli 142 * added additional configuration IOCTLs 143 * use ttyUSB0 for configuration 144 * 145 * 0.9.11 (04/17/2000) greg kroah-hartman 146 * fixed module initialization race conditions. 147 * made all urbs dynamically allocated. 148 * made driver devfs compatible. now it only registers the tty device 149 * when the device is actually plugged in. 150 * 151 * 0.9.10 (04/13/2000) greg kroah-hartman 152 * added proc interface framework. 153 * 154 * 0.9.9 (04/13/2000) david iacovelli 155 * added enumeration code and ioctls to configure the device 156 * 157 * 0.9.8 (04/12/2000) david iacovelli 158 * Change interrupt read start when device is plugged in 159 * and stop when device is removed 160 * process interrupt reads when all ports are closed 161 * (keep value of rxBytesAvail consistent with the edgeport) 162 * set the USB_BULK_QUEUE flag so that we can shove a bunch 163 * of urbs at once down the pipe 164 * 165 * 0.9.7 (04/10/2000) david iacovelli 166 * start to add enumeration code. 167 * generate serial number for epic devices 168 * add support for kdb 169 * 170 * 0.9.6 (03/30/2000) david iacovelli 171 * add IOCTL to get string, manufacture, and boot descriptors 172 * 173 * 0.9.5 (03/14/2000) greg kroah-hartman 174 * more error checking added to SerialOpen to try to fix UHCI open problem 175 * 176 * 0.9.4 (03/09/2000) greg kroah-hartman 177 * added more error checking to handle oops when data is hanging 178 * around and tty is abruptly closed. 179 * 180 * 0.9.3 (03/09/2000) david iacovelli 181 * Add epic support for xon/xoff chars 182 * play with performance 183 * 184 * 0.9.2 (03/08/2000) greg kroah-hartman 185 * changed most "info" calls to "dbg" 186 * implemented flow control properly in the termios call 187 * 188 * 0.9.1 (03/08/2000) david iacovelli 189 * added EPIC support 190 * enabled bootloader update 191 * 192 * 0.9 (03/08/2000) greg kroah-hartman 193 * Release to IO networks. 194 * Integrated changes that David made 195 * made getting urbs for writing SMP safe 196 * 197 * 0.8 (03/07/2000) greg kroah-hartman 198 * Release to IO networks. 199 * Fixed problems that were seen in code by David. 200 * Now both Edgeport/4 and Edgeport/2 works properly. 201 * Changed most of the functions to use port instead of serial. 202 * 203 * 0.7 (02/27/2000) greg kroah-hartman 204 * Milestone 3 release. 205 * Release to IO Networks 206 * ioctl for waiting on line change implemented. 207 * ioctl for getting statistics implemented. 208 * multiport support working. 209 * lsr and msr registers are now handled properly. 210 * change break now hooked up and working. 211 * support for all known Edgeport devices. 212 * 213 * 0.6 (02/22/2000) greg kroah-hartman 214 * Release to IO networks. 215 * CHASE is implemented correctly when port is closed. 216 * SerialOpen now blocks correctly until port is fully opened. 217 * 218 * 0.5 (02/20/2000) greg kroah-hartman 219 * Release to IO networks. 220 * Known problems: 221 * modem status register changes are not sent on to the user 222 * CHASE is not implemented when the port is closed. 223 * 224 * 0.4 (02/16/2000) greg kroah-hartman 225 * Second cut at the CeBit demo. 226 * Doesn't leak memory on every write to the port 227 * Still small leaks on startup. 228 * Added support for Edgeport/2 and Edgeport/8 229 * 230 * 0.3 (02/15/2000) greg kroah-hartman 231 * CeBit demo release. 232 * Force the line settings to 4800, 8, 1, e for the demo. 233 * Warning! This version leaks memory like crazy! 234 * 235 * 0.2 (01/30/2000) greg kroah-hartman 236 * Milestone 1 release. 237 * Device is found by USB subsystem, enumerated, fimware is downloaded 238 * and the descriptors are printed to the debug log, config is set, and 239 * green light starts to blink. Open port works, and data can be sent 240 * and received at the default settings of the UART. Loopback connector 241 * and debug log confirms this. 242 * 243 * 0.1 (01/23/2000) greg kroah-hartman 244 * Initial release to help IO Networks try to set up their test system. 245 * Edgeport4 is recognized, firmware is downloaded, config is set so 246 * device blinks green light every 3 sec. Port is bound, but opening, 247 * closing, and sending data do not work properly. 248 * 249 */ 250 251 #include <linux/config.h> 252 #include <linux/kernel.h> 253 #include <linux/jiffies.h> 254 #include <linux/errno.h> 255 #include <linux/init.h> 256 #include <linux/slab.h> 257 #include <linux/tty.h> 258 #include <linux/tty_driver.h> 259 #include <linux/tty_flip.h> 260 #include <linux/module.h> 261 #include <linux/spinlock.h> 262 #include <linux/serial.h> 263 #include <linux/ioctl.h> 264 #include <linux/wait.h> 265 #include <asm/uaccess.h> 266 #include <linux/usb.h> 267 #include "usb-serial.h" 268 #include "io_edgeport.h" 269 #include "io_ionsp.h" /* info for the iosp messages */ 270 #include "io_16654.h" /* 16654 UART defines */ 271 272 /* 273 * Version Information 274 */ 275 #define DRIVER_VERSION "v2.7" 276 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 277 #define DRIVER_DESC "Edgeport USB Serial Driver" 278 279 /* First, the latest boot code - for first generation edgeports */ 280 #define IMAGE_ARRAY_NAME BootCodeImage_GEN1 281 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN1 282 #include "io_fw_boot.h" /* the bootloader firmware to download to a device, if it needs it */ 283 284 /* for second generation edgeports */ 285 #define IMAGE_ARRAY_NAME BootCodeImage_GEN2 286 #define IMAGE_VERSION_NAME BootCodeImageVersion_GEN2 287 #include "io_fw_boot2.h" /* the bootloader firmware to download to a device, if it needs it */ 288 289 /* Then finally the main run-time operational code - for first generation edgeports */ 290 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN1 291 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN1 292 #include "io_fw_down.h" /* Define array OperationalCodeImage[] */ 293 294 /* for second generation edgeports */ 295 #define IMAGE_ARRAY_NAME OperationalCodeImage_GEN2 296 #define IMAGE_VERSION_NAME OperationalCodeImageVersion_GEN2 297 #include "io_fw_down2.h" /* Define array OperationalCodeImage[] */ 298 299 #define MAX_NAME_LEN 64 300 301 #define CHASE_TIMEOUT (5*HZ) /* 5 seconds */ 302 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ 303 #define COMMAND_TIMEOUT (5*HZ) /* 5 seconds */ 304 305 /* receive port state */ 306 enum RXSTATE { 307 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 308 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 309 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 310 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 311 }; 312 313 314 /* Transmit Fifo 315 * This Transmit queue is an extension of the edgeport Rx buffer. 316 * The maximum amount of data buffered in both the edgeport 317 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 318 */ 319 struct TxFifo { 320 unsigned int head; /* index to head pointer (write) */ 321 unsigned int tail; /* index to tail pointer (read) */ 322 unsigned int count; /* Bytes in queue */ 323 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 324 unsigned char *fifo; /* allocated Buffer */ 325 }; 326 327 /* This structure holds all of the local port information */ 328 struct edgeport_port { 329 __u16 txCredits; /* our current credits for this port */ 330 __u16 maxTxCredits; /* the max size of the port */ 331 332 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 333 struct urb *write_urb; /* write URB for this port */ 334 char write_in_progress; /* TRUE while a write URB is outstanding */ 335 spinlock_t ep_lock; 336 337 __u8 shadowLCR; /* last LCR value received */ 338 __u8 shadowMCR; /* last MCR value received */ 339 __u8 shadowMSR; /* last MSR value received */ 340 __u8 shadowLSR; /* last LSR value received */ 341 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 342 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 343 __u8 validDataMask; 344 __u32 baudRate; 345 346 char open; 347 char openPending; 348 char commandPending; 349 char closePending; 350 char chaseResponsePending; 351 352 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 353 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 354 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 355 wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ 356 357 struct async_icount icount; 358 struct usb_serial_port *port; /* loop back to the owner of this object */ 359 }; 360 361 362 /* This structure holds all of the individual device information */ 363 struct edgeport_serial { 364 char name[MAX_NAME_LEN+1]; /* string name of this device */ 365 366 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 367 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 368 struct edgeport_product_info product_info; /* Product Info */ 369 370 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 371 unsigned char * interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 372 struct urb * interrupt_read_urb; /* our interrupt urb */ 373 374 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 375 unsigned char * bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 376 struct urb * read_urb; /* our bulk read urb */ 377 int read_in_progress; 378 spinlock_t es_lock; 379 380 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 381 382 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 383 384 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 385 __u8 rxHeader1; /* receive header byte 1 */ 386 __u8 rxHeader2; /* receive header byte 2 */ 387 __u8 rxHeader3; /* receive header byte 3 */ 388 __u8 rxPort; /* the port that we are currently receiving data for */ 389 __u8 rxStatusCode; /* the receive status code */ 390 __u8 rxStatusParam; /* the receive status paramater */ 391 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 392 struct usb_serial *serial; /* loop back to the owner of this object */ 393 }; 394 395 /* baud rate information */ 396 struct divisor_table_entry { 397 __u32 BaudRate; 398 __u16 Divisor; 399 }; 400 401 // 402 // Define table of divisors for Rev A EdgePort/4 hardware 403 // These assume a 3.6864MHz crystal, the standard /16, and 404 // MCR.7 = 0. 405 // 406 static struct divisor_table_entry divisor_table[] = { 407 { 50, 4608}, 408 { 75, 3072}, 409 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 410 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 411 { 150, 1536}, 412 { 300, 768}, 413 { 600, 384}, 414 { 1200, 192}, 415 { 1800, 128}, 416 { 2400, 96}, 417 { 4800, 48}, 418 { 7200, 32}, 419 { 9600, 24}, 420 { 14400, 16}, 421 { 19200, 12}, 422 { 38400, 6}, 423 { 57600, 4}, 424 { 115200, 2}, 425 { 230400, 1}, 426 }; 427 428 /* local variables */ 429 static int debug; 430 431 static int low_latency = 1; /* tty low latency flag, on by default */ 432 433 static int CmdUrbs = 0; /* Number of outstanding Command Write Urbs */ 434 435 436 /* local function prototypes */ 437 438 /* function prototypes for all URB callbacks */ 439 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs); 440 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs); 441 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs); 442 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs); 443 444 /* function prototypes for the usbserial callbacks */ 445 static int edge_open (struct usb_serial_port *port, struct file *filp); 446 static void edge_close (struct usb_serial_port *port, struct file *filp); 447 static int edge_write (struct usb_serial_port *port, const unsigned char *buf, int count); 448 static int edge_write_room (struct usb_serial_port *port); 449 static int edge_chars_in_buffer (struct usb_serial_port *port); 450 static void edge_throttle (struct usb_serial_port *port); 451 static void edge_unthrottle (struct usb_serial_port *port); 452 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios); 453 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); 454 static void edge_break (struct usb_serial_port *port, int break_state); 455 static int edge_tiocmget (struct usb_serial_port *port, struct file *file); 456 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); 457 static int edge_startup (struct usb_serial *serial); 458 static void edge_shutdown (struct usb_serial *serial); 459 460 461 #include "io_tables.h" /* all of the devices that this driver supports */ 462 463 static struct usb_driver io_driver = { 464 .owner = THIS_MODULE, 465 .name = "io_edgeport", 466 .probe = usb_serial_probe, 467 .disconnect = usb_serial_disconnect, 468 .id_table = id_table_combined, 469 }; 470 471 /* function prototypes for all of our local functions */ 472 static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength); 473 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3); 474 static void edge_tty_recv (struct device *dev, struct tty_struct *tty, unsigned char *data, int length); 475 static void handle_new_msr (struct edgeport_port *edge_port, __u8 newMsr); 476 static void handle_new_lsr (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data); 477 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param); 478 static int calc_baud_rate_divisor (int baud_rate, int *divisor); 479 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate); 480 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios); 481 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue); 482 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength); 483 static void send_more_port_data (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port); 484 485 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); 486 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); 487 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data); 488 static void get_manufacturing_desc (struct edgeport_serial *edge_serial); 489 static void get_boot_desc (struct edgeport_serial *edge_serial); 490 static void load_application_firmware (struct edgeport_serial *edge_serial); 491 492 static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size); 493 494 495 // ************************************************************************ 496 // ************************************************************************ 497 // ************************************************************************ 498 // ************************************************************************ 499 500 /************************************************************************ 501 * * 502 * update_edgeport_E2PROM() Compare current versions of * 503 * Boot ROM and Manufacture * 504 * Descriptors with versions * 505 * embedded in this driver * 506 * * 507 ************************************************************************/ 508 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial) 509 { 510 __u32 BootCurVer; 511 __u32 BootNewVer; 512 __u8 BootMajorVersion; 513 __u8 BootMinorVersion; 514 __le16 BootBuildNumber; 515 __u8 *BootImage; 516 __u32 BootSize; 517 struct edge_firmware_image_record *record; 518 unsigned char *firmware; 519 int response; 520 521 522 switch (edge_serial->product_info.iDownloadFile) { 523 case EDGE_DOWNLOAD_FILE_I930: 524 BootMajorVersion = BootCodeImageVersion_GEN1.MajorVersion; 525 BootMinorVersion = BootCodeImageVersion_GEN1.MinorVersion; 526 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber); 527 BootImage = &BootCodeImage_GEN1[0]; 528 BootSize = sizeof( BootCodeImage_GEN1 ); 529 break; 530 531 case EDGE_DOWNLOAD_FILE_80251: 532 BootMajorVersion = BootCodeImageVersion_GEN2.MajorVersion; 533 BootMinorVersion = BootCodeImageVersion_GEN2.MinorVersion; 534 BootBuildNumber = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber); 535 BootImage = &BootCodeImage_GEN2[0]; 536 BootSize = sizeof( BootCodeImage_GEN2 ); 537 break; 538 539 default: 540 return; 541 } 542 543 // Check Boot Image Version 544 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 545 (edge_serial->boot_descriptor.MinorVersion << 16) + 546 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 547 548 BootNewVer = (BootMajorVersion << 24) + 549 (BootMinorVersion << 16) + 550 le16_to_cpu(BootBuildNumber); 551 552 dbg("Current Boot Image version %d.%d.%d", 553 edge_serial->boot_descriptor.MajorVersion, 554 edge_serial->boot_descriptor.MinorVersion, 555 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 556 557 558 if (BootNewVer > BootCurVer) { 559 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d", 560 edge_serial->boot_descriptor.MajorVersion, 561 edge_serial->boot_descriptor.MinorVersion, 562 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 563 BootMajorVersion, 564 BootMinorVersion, 565 le16_to_cpu(BootBuildNumber)); 566 567 568 dbg("Downloading new Boot Image"); 569 570 firmware = BootImage; 571 572 for (;;) { 573 record = (struct edge_firmware_image_record *)firmware; 574 response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); 575 if (response < 0) { 576 dev_err(&edge_serial->serial->dev->dev, "rom_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); 577 break; 578 } 579 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); 580 if (firmware >= &BootImage[BootSize]) { 581 break; 582 } 583 } 584 } else { 585 dbg("Boot Image -- already up to date"); 586 } 587 } 588 589 590 /************************************************************************ 591 * * 592 * Get string descriptor from device * 593 * * 594 ************************************************************************/ 595 static int get_string (struct usb_device *dev, int Id, char *string) 596 { 597 struct usb_string_descriptor StringDesc; 598 struct usb_string_descriptor *pStringDesc; 599 600 dbg("%s - USB String ID = %d", __FUNCTION__, Id ); 601 602 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { 603 return 0; 604 } 605 606 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); 607 608 if (!pStringDesc) { 609 return 0; 610 } 611 612 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { 613 kfree(pStringDesc); 614 return 0; 615 } 616 617 unicode_to_ascii(string, pStringDesc->wData, pStringDesc->bLength/2-1); 618 619 kfree(pStringDesc); 620 return strlen(string); 621 } 622 623 624 #if 0 625 /************************************************************************ 626 * 627 * Get string descriptor from device 628 * 629 ************************************************************************/ 630 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc) 631 { 632 struct usb_string_descriptor StringDesc; 633 struct usb_string_descriptor *pStringDesc; 634 635 dbg("%s - USB String ID = %d", __FUNCTION__, Id ); 636 637 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) { 638 return 0; 639 } 640 641 pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL); 642 643 if (!pStringDesc) { 644 return -1; 645 } 646 647 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) { 648 kfree(pStringDesc); 649 return -1; 650 } 651 652 *pRetDesc = pStringDesc; 653 return 0; 654 } 655 #endif 656 657 static void get_product_info(struct edgeport_serial *edge_serial) 658 { 659 struct edgeport_product_info *product_info = &edge_serial->product_info; 660 661 memset (product_info, 0, sizeof(struct edgeport_product_info)); 662 663 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 664 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 665 product_info->ProdInfoVer = 0; 666 667 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 668 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 669 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 670 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 671 672 product_info->BootMajorVersion = edge_serial->boot_descriptor.MajorVersion; 673 product_info->BootMinorVersion = edge_serial->boot_descriptor.MinorVersion; 674 product_info->BootBuildNumber = edge_serial->boot_descriptor.BuildNumber; 675 676 memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate)); 677 678 // check if this is 2nd generation hardware 679 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) { 680 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN2.MajorVersion; 681 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN2.MinorVersion; 682 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber); 683 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 684 } else { 685 product_info->FirmwareMajorVersion = OperationalCodeImageVersion_GEN1.MajorVersion; 686 product_info->FirmwareMinorVersion = OperationalCodeImageVersion_GEN1.MinorVersion; 687 product_info->FirmwareBuildNumber = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber); 688 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 689 } 690 691 // Determine Product type and set appropriate flags 692 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 693 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 694 case ION_DEVICE_ID_EDGEPORT_4T: 695 case ION_DEVICE_ID_EDGEPORT_4: 696 case ION_DEVICE_ID_EDGEPORT_2: 697 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 698 case ION_DEVICE_ID_EDGEPORT_8: 699 case ION_DEVICE_ID_EDGEPORT_421: 700 case ION_DEVICE_ID_EDGEPORT_21: 701 case ION_DEVICE_ID_EDGEPORT_2_DIN: 702 case ION_DEVICE_ID_EDGEPORT_4_DIN: 703 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 704 product_info->IsRS232 = 1; 705 break; 706 707 case ION_DEVICE_ID_EDGEPORT_2I: // Edgeport/2 RS422/RS485 708 product_info->IsRS422 = 1; 709 product_info->IsRS485 = 1; 710 break; 711 712 case ION_DEVICE_ID_EDGEPORT_8I: // Edgeport/4 RS422 713 case ION_DEVICE_ID_EDGEPORT_4I: // Edgeport/4 RS422 714 product_info->IsRS422 = 1; 715 break; 716 } 717 718 // Dump Product Info structure 719 dbg("**Product Information:"); 720 dbg(" ProductId %x", product_info->ProductId ); 721 dbg(" NumPorts %d", product_info->NumPorts ); 722 dbg(" ProdInfoVer %d", product_info->ProdInfoVer ); 723 dbg(" IsServer %d", product_info->IsServer); 724 dbg(" IsRS232 %d", product_info->IsRS232 ); 725 dbg(" IsRS422 %d", product_info->IsRS422 ); 726 dbg(" IsRS485 %d", product_info->IsRS485 ); 727 dbg(" RomSize %d", product_info->RomSize ); 728 dbg(" RamSize %d", product_info->RamSize ); 729 dbg(" CpuRev %x", product_info->CpuRev ); 730 dbg(" BoardRev %x", product_info->BoardRev); 731 dbg(" BootMajorVersion %d.%d.%d", product_info->BootMajorVersion, 732 product_info->BootMinorVersion, 733 le16_to_cpu(product_info->BootBuildNumber)); 734 dbg(" FirmwareMajorVersion %d.%d.%d", product_info->FirmwareMajorVersion, 735 product_info->FirmwareMinorVersion, 736 le16_to_cpu(product_info->FirmwareBuildNumber)); 737 dbg(" ManufactureDescDate %d/%d/%d", product_info->ManufactureDescDate[0], 738 product_info->ManufactureDescDate[1], 739 product_info->ManufactureDescDate[2]+1900); 740 dbg(" iDownloadFile 0x%x", product_info->iDownloadFile); 741 742 } 743 744 745 /************************************************************************/ 746 /************************************************************************/ 747 /* U S B C A L L B A C K F U N C T I O N S */ 748 /* U S B C A L L B A C K F U N C T I O N S */ 749 /************************************************************************/ 750 /************************************************************************/ 751 752 /***************************************************************************** 753 * edge_interrupt_callback 754 * this is the callback function for when we have received data on the 755 * interrupt endpoint. 756 *****************************************************************************/ 757 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs) 758 { 759 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; 760 struct edgeport_port *edge_port; 761 struct usb_serial_port *port; 762 unsigned char *data = urb->transfer_buffer; 763 int length = urb->actual_length; 764 int bytes_avail; 765 int position; 766 int txCredits; 767 int portNumber; 768 int result; 769 770 dbg("%s", __FUNCTION__); 771 772 switch (urb->status) { 773 case 0: 774 /* success */ 775 break; 776 case -ECONNRESET: 777 case -ENOENT: 778 case -ESHUTDOWN: 779 /* this urb is terminated, clean up */ 780 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); 781 return; 782 default: 783 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); 784 goto exit; 785 } 786 787 // process this interrupt-read even if there are no ports open 788 if (length) { 789 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data); 790 791 if (length > 1) { 792 bytes_avail = data[0] | (data[1] << 8); 793 if (bytes_avail) { 794 spin_lock(&edge_serial->es_lock); 795 edge_serial->rxBytesAvail += bytes_avail; 796 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress); 797 798 if (edge_serial->rxBytesAvail > 0 && 799 !edge_serial->read_in_progress) { 800 dbg("%s - posting a read", __FUNCTION__); 801 edge_serial->read_in_progress = TRUE; 802 803 /* we have pending bytes on the bulk in pipe, send a request */ 804 edge_serial->read_urb->dev = edge_serial->serial->dev; 805 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 806 if (result) { 807 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result); 808 edge_serial->read_in_progress = FALSE; 809 } 810 } 811 spin_unlock(&edge_serial->es_lock); 812 } 813 } 814 /* grab the txcredits for the ports if available */ 815 position = 2; 816 portNumber = 0; 817 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) { 818 txCredits = data[position] | (data[position+1] << 8); 819 if (txCredits) { 820 port = edge_serial->serial->port[portNumber]; 821 edge_port = usb_get_serial_port_data(port); 822 if (edge_port->open) { 823 spin_lock(&edge_port->ep_lock); 824 edge_port->txCredits += txCredits; 825 spin_unlock(&edge_port->ep_lock); 826 dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits); 827 828 /* tell the tty driver that something has changed */ 829 if (edge_port->port->tty) 830 tty_wakeup(edge_port->port->tty); 831 832 // Since we have more credit, check if more data can be sent 833 send_more_port_data(edge_serial, edge_port); 834 } 835 } 836 position += 2; 837 ++portNumber; 838 } 839 } 840 841 exit: 842 result = usb_submit_urb (urb, GFP_ATOMIC); 843 if (result) { 844 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result); 845 } 846 } 847 848 849 /***************************************************************************** 850 * edge_bulk_in_callback 851 * this is the callback function for when we have received data on the 852 * bulk in endpoint. 853 *****************************************************************************/ 854 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs) 855 { 856 struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context; 857 unsigned char *data = urb->transfer_buffer; 858 int status; 859 __u16 raw_data_length; 860 861 dbg("%s", __FUNCTION__); 862 863 if (urb->status) { 864 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status); 865 edge_serial->read_in_progress = FALSE; 866 return; 867 } 868 869 if (urb->actual_length == 0) { 870 dbg("%s - read bulk callback with no data", __FUNCTION__); 871 edge_serial->read_in_progress = FALSE; 872 return; 873 } 874 875 raw_data_length = urb->actual_length; 876 877 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data); 878 879 spin_lock(&edge_serial->es_lock); 880 881 /* decrement our rxBytes available by the number that we just got */ 882 edge_serial->rxBytesAvail -= raw_data_length; 883 884 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail); 885 886 process_rcvd_data (edge_serial, data, urb->actual_length); 887 888 /* check to see if there's any more data for us to read */ 889 if (edge_serial->rxBytesAvail > 0) { 890 dbg("%s - posting a read", __FUNCTION__); 891 edge_serial->read_urb->dev = edge_serial->serial->dev; 892 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 893 if (status) { 894 dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status); 895 edge_serial->read_in_progress = FALSE; 896 } 897 } else { 898 edge_serial->read_in_progress = FALSE; 899 } 900 901 spin_unlock(&edge_serial->es_lock); 902 } 903 904 905 /***************************************************************************** 906 * edge_bulk_out_data_callback 907 * this is the callback function for when we have finished sending serial data 908 * on the bulk out endpoint. 909 *****************************************************************************/ 910 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs) 911 { 912 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; 913 struct tty_struct *tty; 914 915 dbg("%s", __FUNCTION__); 916 917 if (urb->status) { 918 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status); 919 } 920 921 tty = edge_port->port->tty; 922 923 if (tty && edge_port->open) { 924 /* let the tty driver wakeup if it has a special write_wakeup function */ 925 tty_wakeup(tty); 926 } 927 928 // Release the Write URB 929 edge_port->write_in_progress = FALSE; 930 931 // Check if more data needs to be sent 932 send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port); 933 } 934 935 936 /***************************************************************************** 937 * BulkOutCmdCallback 938 * this is the callback function for when we have finished sending a command 939 * on the bulk out endpoint. 940 *****************************************************************************/ 941 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs) 942 { 943 struct edgeport_port *edge_port = (struct edgeport_port *)urb->context; 944 struct tty_struct *tty; 945 int status = urb->status; 946 947 dbg("%s", __FUNCTION__); 948 949 CmdUrbs--; 950 dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs); 951 952 953 /* clean up the transfer buffer */ 954 if (urb->transfer_buffer != NULL) { 955 kfree(urb->transfer_buffer); 956 } 957 958 /* Free the command urb */ 959 usb_free_urb (urb); 960 961 if (status) { 962 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status); 963 return; 964 } 965 966 /* Get pointer to tty */ 967 tty = edge_port->port->tty; 968 969 /* tell the tty driver that something has changed */ 970 if (tty && edge_port->open) 971 tty_wakeup(tty); 972 973 /* we have completed the command */ 974 edge_port->commandPending = FALSE; 975 wake_up(&edge_port->wait_command); 976 } 977 978 979 /***************************************************************************** 980 * Driver tty interface functions 981 *****************************************************************************/ 982 983 /***************************************************************************** 984 * SerialOpen 985 * this function is called by the tty driver when a port is opened 986 * If successful, we return 0 987 * Otherwise we return a negative error number. 988 *****************************************************************************/ 989 static int edge_open (struct usb_serial_port *port, struct file * filp) 990 { 991 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 992 struct usb_serial *serial; 993 struct edgeport_serial *edge_serial; 994 int response; 995 996 dbg("%s - port %d", __FUNCTION__, port->number); 997 998 if (edge_port == NULL) 999 return -ENODEV; 1000 1001 if (port->tty) 1002 port->tty->low_latency = low_latency; 1003 1004 /* see if we've set up our endpoint info yet (can't set it up in edge_startup 1005 as the structures were not set up at that time.) */ 1006 serial = port->serial; 1007 edge_serial = usb_get_serial_data(serial); 1008 if (edge_serial == NULL) { 1009 return -ENODEV; 1010 } 1011 if (edge_serial->interrupt_in_buffer == NULL) { 1012 struct usb_serial_port *port0 = serial->port[0]; 1013 1014 /* not set up yet, so do it now */ 1015 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer; 1016 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress; 1017 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 1018 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 1019 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress; 1020 edge_serial->read_urb = port0->read_urb; 1021 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress; 1022 1023 /* set up our interrupt urb */ 1024 usb_fill_int_urb(edge_serial->interrupt_read_urb, 1025 serial->dev, 1026 usb_rcvintpipe(serial->dev, 1027 port0->interrupt_in_endpointAddress), 1028 port0->interrupt_in_buffer, 1029 edge_serial->interrupt_read_urb->transfer_buffer_length, 1030 edge_interrupt_callback, edge_serial, 1031 edge_serial->interrupt_read_urb->interval); 1032 1033 /* set up our bulk in urb */ 1034 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 1035 usb_rcvbulkpipe(serial->dev, 1036 port0->bulk_in_endpointAddress), 1037 port0->bulk_in_buffer, 1038 edge_serial->read_urb->transfer_buffer_length, 1039 edge_bulk_in_callback, edge_serial); 1040 edge_serial->read_in_progress = FALSE; 1041 1042 /* start interrupt read for this edgeport 1043 * this interrupt will continue as long as the edgeport is connected */ 1044 response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL); 1045 if (response) { 1046 dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response); 1047 } 1048 } 1049 1050 /* initialize our wait queues */ 1051 init_waitqueue_head(&edge_port->wait_open); 1052 init_waitqueue_head(&edge_port->wait_chase); 1053 init_waitqueue_head(&edge_port->delta_msr_wait); 1054 init_waitqueue_head(&edge_port->wait_command); 1055 1056 /* initialize our icount structure */ 1057 memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1058 1059 /* initialize our port settings */ 1060 edge_port->txCredits = 0; /* Can't send any data yet */ 1061 edge_port->shadowMCR = MCR_MASTER_IE; /* Must always set this bit to enable ints! */ 1062 edge_port->chaseResponsePending = FALSE; 1063 1064 /* send a open port command */ 1065 edge_port->openPending = TRUE; 1066 edge_port->open = FALSE; 1067 response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0); 1068 1069 if (response < 0) { 1070 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__); 1071 edge_port->openPending = FALSE; 1072 return -ENODEV; 1073 } 1074 1075 /* now wait for the port to be completely opened */ 1076 wait_event_timeout(edge_port->wait_open, (edge_port->openPending != TRUE), OPEN_TIMEOUT); 1077 1078 if (edge_port->open == FALSE) { 1079 /* open timed out */ 1080 dbg("%s - open timedout", __FUNCTION__); 1081 edge_port->openPending = FALSE; 1082 return -ENODEV; 1083 } 1084 1085 /* create the txfifo */ 1086 edge_port->txfifo.head = 0; 1087 edge_port->txfifo.tail = 0; 1088 edge_port->txfifo.count = 0; 1089 edge_port->txfifo.size = edge_port->maxTxCredits; 1090 edge_port->txfifo.fifo = kmalloc (edge_port->maxTxCredits, GFP_KERNEL); 1091 1092 if (!edge_port->txfifo.fifo) { 1093 dbg("%s - no memory", __FUNCTION__); 1094 edge_close (port, filp); 1095 return -ENOMEM; 1096 } 1097 1098 /* Allocate a URB for the write */ 1099 edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL); 1100 edge_port->write_in_progress = FALSE; 1101 1102 if (!edge_port->write_urb) { 1103 dbg("%s - no memory", __FUNCTION__); 1104 edge_close (port, filp); 1105 return -ENOMEM; 1106 } 1107 1108 dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits); 1109 1110 dbg("%s exited", __FUNCTION__); 1111 1112 return 0; 1113 } 1114 1115 1116 /************************************************************************ 1117 * 1118 * block_until_chase_response 1119 * 1120 * This function will block the close until one of the following: 1121 * 1. Response to our Chase comes from Edgeport 1122 * 2. A timout of 10 seconds without activity has expired 1123 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 1124 * 1125 ************************************************************************/ 1126 static void block_until_chase_response(struct edgeport_port *edge_port) 1127 { 1128 DEFINE_WAIT(wait); 1129 __u16 lastCredits; 1130 int timeout = 1*HZ; 1131 int loop = 10; 1132 1133 while (1) { 1134 // Save Last credits 1135 lastCredits = edge_port->txCredits; 1136 1137 // Did we get our Chase response 1138 if (edge_port->chaseResponsePending == FALSE) { 1139 dbg("%s - Got Chase Response", __FUNCTION__); 1140 1141 // did we get all of our credit back? 1142 if (edge_port->txCredits == edge_port->maxTxCredits ) { 1143 dbg("%s - Got all credits", __FUNCTION__); 1144 return; 1145 } 1146 } 1147 1148 // Block the thread for a while 1149 prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); 1150 schedule_timeout(timeout); 1151 finish_wait(&edge_port->wait_chase, &wait); 1152 1153 if (lastCredits == edge_port->txCredits) { 1154 // No activity.. count down. 1155 loop--; 1156 if (loop == 0) { 1157 edge_port->chaseResponsePending = FALSE; 1158 dbg("%s - Chase TIMEOUT", __FUNCTION__); 1159 return; 1160 } 1161 } else { 1162 // Reset timout value back to 10 seconds 1163 dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits); 1164 loop = 10; 1165 } 1166 } 1167 } 1168 1169 1170 /************************************************************************ 1171 * 1172 * block_until_tx_empty 1173 * 1174 * This function will block the close until one of the following: 1175 * 1. TX count are 0 1176 * 2. The edgeport has stopped 1177 * 3. A timout of 3 seconds without activity has expired 1178 * 1179 ************************************************************************/ 1180 static void block_until_tx_empty (struct edgeport_port *edge_port) 1181 { 1182 DEFINE_WAIT(wait); 1183 struct TxFifo *fifo = &edge_port->txfifo; 1184 __u32 lastCount; 1185 int timeout = HZ/10; 1186 int loop = 30; 1187 1188 while (1) { 1189 // Save Last count 1190 lastCount = fifo->count; 1191 1192 // Is the Edgeport Buffer empty? 1193 if (lastCount == 0) { 1194 dbg("%s - TX Buffer Empty", __FUNCTION__); 1195 return; 1196 } 1197 1198 // Block the thread for a while 1199 prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE); 1200 schedule_timeout(timeout); 1201 finish_wait(&edge_port->wait_chase, &wait); 1202 1203 dbg("%s wait", __FUNCTION__); 1204 1205 if (lastCount == fifo->count) { 1206 // No activity.. count down. 1207 loop--; 1208 if (loop == 0) { 1209 dbg("%s - TIMEOUT", __FUNCTION__); 1210 return; 1211 } 1212 } else { 1213 // Reset timout value back to seconds 1214 loop = 30; 1215 } 1216 } 1217 } 1218 1219 1220 /***************************************************************************** 1221 * edge_close 1222 * this function is called by the tty driver when a port is closed 1223 *****************************************************************************/ 1224 static void edge_close (struct usb_serial_port *port, struct file * filp) 1225 { 1226 struct edgeport_serial *edge_serial; 1227 struct edgeport_port *edge_port; 1228 int status; 1229 1230 dbg("%s - port %d", __FUNCTION__, port->number); 1231 1232 edge_serial = usb_get_serial_data(port->serial); 1233 edge_port = usb_get_serial_port_data(port); 1234 if ((edge_serial == NULL) || (edge_port == NULL)) 1235 return; 1236 1237 // block until tx is empty 1238 block_until_tx_empty(edge_port); 1239 1240 edge_port->closePending = TRUE; 1241 1242 /* flush and chase */ 1243 edge_port->chaseResponsePending = TRUE; 1244 1245 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); 1246 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); 1247 if (status == 0) { 1248 // block until chase finished 1249 block_until_chase_response(edge_port); 1250 } else { 1251 edge_port->chaseResponsePending = FALSE; 1252 } 1253 1254 /* close the port */ 1255 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__); 1256 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0); 1257 1258 //port->close = TRUE; 1259 edge_port->closePending = FALSE; 1260 edge_port->open = FALSE; 1261 edge_port->openPending = FALSE; 1262 1263 if (edge_port->write_urb) { 1264 usb_kill_urb(edge_port->write_urb); 1265 } 1266 1267 if (edge_port->write_urb) { 1268 /* if this urb had a transfer buffer already (old transfer) free it */ 1269 if (edge_port->write_urb->transfer_buffer != NULL) { 1270 kfree(edge_port->write_urb->transfer_buffer); 1271 } 1272 usb_free_urb (edge_port->write_urb); 1273 edge_port->write_urb = NULL; 1274 } 1275 if (edge_port->txfifo.fifo) { 1276 kfree(edge_port->txfifo.fifo); 1277 edge_port->txfifo.fifo = NULL; 1278 } 1279 1280 dbg("%s exited", __FUNCTION__); 1281 } 1282 1283 /***************************************************************************** 1284 * SerialWrite 1285 * this function is called by the tty driver when data should be written to 1286 * the port. 1287 * If successful, we return the number of bytes written, otherwise we return 1288 * a negative error number. 1289 *****************************************************************************/ 1290 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count) 1291 { 1292 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1293 struct TxFifo *fifo; 1294 int copySize; 1295 int bytesleft; 1296 int firsthalf; 1297 int secondhalf; 1298 unsigned long flags; 1299 1300 dbg("%s - port %d", __FUNCTION__, port->number); 1301 1302 if (edge_port == NULL) 1303 return -ENODEV; 1304 1305 // get a pointer to the Tx fifo 1306 fifo = &edge_port->txfifo; 1307 1308 spin_lock_irqsave(&edge_port->ep_lock, flags); 1309 1310 // calculate number of bytes to put in fifo 1311 copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count)); 1312 1313 dbg("%s(%d) of %d byte(s) Fifo room %d -- will copy %d bytes", __FUNCTION__, 1314 port->number, count, edge_port->txCredits - fifo->count, copySize); 1315 1316 /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */ 1317 if (copySize == 0) { 1318 dbg("%s - copySize = Zero", __FUNCTION__); 1319 goto finish_write; 1320 } 1321 1322 // queue the data 1323 // since we can never overflow the buffer we do not have to check for full condition 1324 1325 // the copy is done is two parts -- first fill to the end of the buffer 1326 // then copy the reset from the start of the buffer 1327 1328 bytesleft = fifo->size - fifo->head; 1329 firsthalf = min (bytesleft, copySize); 1330 dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft); 1331 1332 /* now copy our data */ 1333 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1334 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]); 1335 1336 // update the index and size 1337 fifo->head += firsthalf; 1338 fifo->count += firsthalf; 1339 1340 // wrap the index 1341 if (fifo->head == fifo->size) { 1342 fifo->head = 0; 1343 } 1344 1345 secondhalf = copySize-firsthalf; 1346 1347 if (secondhalf) { 1348 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf); 1349 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1350 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]); 1351 // update the index and size 1352 fifo->count += secondhalf; 1353 fifo->head += secondhalf; 1354 // No need to check for wrap since we can not get to end of fifo in this part 1355 } 1356 1357 finish_write: 1358 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1359 1360 send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port); 1361 1362 dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count); 1363 1364 return copySize; 1365 } 1366 1367 1368 /************************************************************************ 1369 * 1370 * send_more_port_data() 1371 * 1372 * This routine attempts to write additional UART transmit data 1373 * to a port over the USB bulk pipe. It is called (1) when new 1374 * data has been written to a port's TxBuffer from higher layers 1375 * (2) when the peripheral sends us additional TxCredits indicating 1376 * that it can accept more Tx data for a given port; and (3) when 1377 * a bulk write completes successfully and we want to see if we 1378 * can transmit more. 1379 * 1380 ************************************************************************/ 1381 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port) 1382 { 1383 struct TxFifo *fifo = &edge_port->txfifo; 1384 struct urb *urb; 1385 unsigned char *buffer; 1386 int status; 1387 int count; 1388 int bytesleft; 1389 int firsthalf; 1390 int secondhalf; 1391 unsigned long flags; 1392 1393 dbg("%s(%d)", __FUNCTION__, edge_port->port->number); 1394 1395 spin_lock_irqsave(&edge_port->ep_lock, flags); 1396 1397 if (edge_port->write_in_progress || 1398 !edge_port->open || 1399 (fifo->count == 0)) { 1400 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress); 1401 goto exit_send; 1402 } 1403 1404 // since the amount of data in the fifo will always fit into the 1405 // edgeport buffer we do not need to check the write length 1406 1407 // Do we have enough credits for this port to make it worthwhile 1408 // to bother queueing a write. If it's too small, say a few bytes, 1409 // it's better to wait for more credits so we can do a larger 1410 // write. 1411 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1412 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits ); 1413 goto exit_send; 1414 } 1415 1416 // lock this write 1417 edge_port->write_in_progress = TRUE; 1418 1419 // get a pointer to the write_urb 1420 urb = edge_port->write_urb; 1421 1422 /* if this urb had a transfer buffer already (old transfer) free it */ 1423 if (urb->transfer_buffer != NULL) { 1424 kfree(urb->transfer_buffer); 1425 urb->transfer_buffer = NULL; 1426 } 1427 1428 /* build the data header for the buffer and port that we are about to send out */ 1429 count = fifo->count; 1430 buffer = kmalloc (count+2, GFP_ATOMIC); 1431 if (buffer == NULL) { 1432 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__); 1433 edge_port->write_in_progress = FALSE; 1434 goto exit_send; 1435 } 1436 buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count); 1437 buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count); 1438 1439 /* now copy our data */ 1440 bytesleft = fifo->size - fifo->tail; 1441 firsthalf = min (bytesleft, count); 1442 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1443 fifo->tail += firsthalf; 1444 fifo->count -= firsthalf; 1445 if (fifo->tail == fifo->size) { 1446 fifo->tail = 0; 1447 } 1448 1449 secondhalf = count-firsthalf; 1450 if (secondhalf) { 1451 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf); 1452 fifo->tail += secondhalf; 1453 fifo->count -= secondhalf; 1454 } 1455 1456 if (count) 1457 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]); 1458 1459 /* fill up the urb with all of our data and submit it */ 1460 usb_fill_bulk_urb (urb, edge_serial->serial->dev, 1461 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), 1462 buffer, count+2, edge_bulk_out_data_callback, edge_port); 1463 1464 /* decrement the number of credits we have by the number we just sent */ 1465 edge_port->txCredits -= count; 1466 edge_port->icount.tx += count; 1467 1468 urb->dev = edge_serial->serial->dev; 1469 status = usb_submit_urb(urb, GFP_ATOMIC); 1470 if (status) { 1471 /* something went wrong */ 1472 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status); 1473 edge_port->write_in_progress = FALSE; 1474 1475 /* revert the credits as something bad happened. */ 1476 edge_port->txCredits += count; 1477 edge_port->icount.tx -= count; 1478 } 1479 dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count); 1480 1481 exit_send: 1482 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1483 } 1484 1485 1486 /***************************************************************************** 1487 * edge_write_room 1488 * this function is called by the tty driver when it wants to know how many 1489 * bytes of data we can accept for a specific port. 1490 * If successful, we return the amount of room that we have for this port 1491 * (the txCredits), 1492 * Otherwise we return a negative error number. 1493 *****************************************************************************/ 1494 static int edge_write_room (struct usb_serial_port *port) 1495 { 1496 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1497 int room; 1498 unsigned long flags; 1499 1500 dbg("%s", __FUNCTION__); 1501 1502 if (edge_port == NULL) 1503 return -ENODEV; 1504 if (edge_port->closePending == TRUE) 1505 return -ENODEV; 1506 1507 dbg("%s - port %d", __FUNCTION__, port->number); 1508 1509 if (!edge_port->open) { 1510 dbg("%s - port not opened", __FUNCTION__); 1511 return -EINVAL; 1512 } 1513 1514 // total of both buffers is still txCredit 1515 spin_lock_irqsave(&edge_port->ep_lock, flags); 1516 room = edge_port->txCredits - edge_port->txfifo.count; 1517 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1518 1519 dbg("%s - returns %d", __FUNCTION__, room); 1520 return room; 1521 } 1522 1523 1524 /***************************************************************************** 1525 * edge_chars_in_buffer 1526 * this function is called by the tty driver when it wants to know how many 1527 * bytes of data we currently have outstanding in the port (data that has 1528 * been written, but hasn't made it out the port yet) 1529 * If successful, we return the number of bytes left to be written in the 1530 * system, 1531 * Otherwise we return a negative error number. 1532 *****************************************************************************/ 1533 static int edge_chars_in_buffer (struct usb_serial_port *port) 1534 { 1535 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1536 int num_chars; 1537 unsigned long flags; 1538 1539 dbg("%s", __FUNCTION__); 1540 1541 if (edge_port == NULL) 1542 return -ENODEV; 1543 if (edge_port->closePending == TRUE) 1544 return -ENODEV; 1545 1546 if (!edge_port->open) { 1547 dbg("%s - port not opened", __FUNCTION__); 1548 return -EINVAL; 1549 } 1550 1551 spin_lock_irqsave(&edge_port->ep_lock, flags); 1552 num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count; 1553 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1554 if (num_chars) { 1555 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars); 1556 } 1557 1558 return num_chars; 1559 } 1560 1561 1562 /***************************************************************************** 1563 * SerialThrottle 1564 * this function is called by the tty driver when it wants to stop the data 1565 * being read from the port. 1566 *****************************************************************************/ 1567 static void edge_throttle (struct usb_serial_port *port) 1568 { 1569 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1570 struct tty_struct *tty; 1571 int status; 1572 1573 dbg("%s - port %d", __FUNCTION__, port->number); 1574 1575 if (edge_port == NULL) 1576 return; 1577 1578 if (!edge_port->open) { 1579 dbg("%s - port not opened", __FUNCTION__); 1580 return; 1581 } 1582 1583 tty = port->tty; 1584 if (!tty) { 1585 dbg ("%s - no tty available", __FUNCTION__); 1586 return; 1587 } 1588 1589 /* if we are implementing XON/XOFF, send the stop character */ 1590 if (I_IXOFF(tty)) { 1591 unsigned char stop_char = STOP_CHAR(tty); 1592 status = edge_write (port, &stop_char, 1); 1593 if (status <= 0) { 1594 return; 1595 } 1596 } 1597 1598 /* if we are implementing RTS/CTS, toggle that line */ 1599 if (tty->termios->c_cflag & CRTSCTS) { 1600 edge_port->shadowMCR &= ~MCR_RTS; 1601 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1602 if (status != 0) { 1603 return; 1604 } 1605 } 1606 1607 return; 1608 } 1609 1610 1611 /***************************************************************************** 1612 * edge_unthrottle 1613 * this function is called by the tty driver when it wants to resume the data 1614 * being read from the port (called after SerialThrottle is called) 1615 *****************************************************************************/ 1616 static void edge_unthrottle (struct usb_serial_port *port) 1617 { 1618 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1619 struct tty_struct *tty; 1620 int status; 1621 1622 dbg("%s - port %d", __FUNCTION__, port->number); 1623 1624 if (edge_port == NULL) 1625 return; 1626 1627 if (!edge_port->open) { 1628 dbg("%s - port not opened", __FUNCTION__); 1629 return; 1630 } 1631 1632 tty = port->tty; 1633 if (!tty) { 1634 dbg ("%s - no tty available", __FUNCTION__); 1635 return; 1636 } 1637 1638 /* if we are implementing XON/XOFF, send the start character */ 1639 if (I_IXOFF(tty)) { 1640 unsigned char start_char = START_CHAR(tty); 1641 status = edge_write (port, &start_char, 1); 1642 if (status <= 0) { 1643 return; 1644 } 1645 } 1646 1647 /* if we are implementing RTS/CTS, toggle that line */ 1648 if (tty->termios->c_cflag & CRTSCTS) { 1649 edge_port->shadowMCR |= MCR_RTS; 1650 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1651 if (status != 0) { 1652 return; 1653 } 1654 } 1655 1656 return; 1657 } 1658 1659 1660 /***************************************************************************** 1661 * SerialSetTermios 1662 * this function is called by the tty driver when it wants to change the termios structure 1663 *****************************************************************************/ 1664 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios) 1665 { 1666 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1667 struct tty_struct *tty = port->tty; 1668 unsigned int cflag; 1669 1670 if (!port->tty || !port->tty->termios) { 1671 dbg ("%s - no tty or termios", __FUNCTION__); 1672 return; 1673 } 1674 1675 cflag = tty->termios->c_cflag; 1676 /* check that they really want us to change something */ 1677 if (old_termios) { 1678 if (cflag == old_termios->c_cflag && 1679 tty->termios->c_iflag == old_termios->c_iflag) { 1680 dbg("%s - nothing to change", __FUNCTION__); 1681 return; 1682 } 1683 } 1684 1685 dbg("%s - clfag %08x iflag %08x", __FUNCTION__, 1686 tty->termios->c_cflag, tty->termios->c_iflag); 1687 if (old_termios) { 1688 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__, 1689 old_termios->c_cflag, old_termios->c_iflag); 1690 } 1691 1692 dbg("%s - port %d", __FUNCTION__, port->number); 1693 1694 if (edge_port == NULL) 1695 return; 1696 1697 if (!edge_port->open) { 1698 dbg("%s - port not opened", __FUNCTION__); 1699 return; 1700 } 1701 1702 /* change the port settings to the new ones specified */ 1703 change_port_settings (edge_port, old_termios); 1704 1705 return; 1706 } 1707 1708 1709 /***************************************************************************** 1710 * get_lsr_info - get line status register info 1711 * 1712 * Purpose: Let user call ioctl() to get info when the UART physically 1713 * is emptied. On bus types like RS485, the transmitter must 1714 * release the bus after transmitting. This must be done when 1715 * the transmit shift register is empty, not be done when the 1716 * transmit holding register is empty. This functionality 1717 * allows an RS485 driver to be written in user space. 1718 *****************************************************************************/ 1719 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value) 1720 { 1721 unsigned int result = 0; 1722 unsigned long flags; 1723 1724 spin_lock_irqsave(&edge_port->ep_lock, flags); 1725 if (edge_port->maxTxCredits == edge_port->txCredits && 1726 edge_port->txfifo.count == 0) { 1727 dbg("%s -- Empty", __FUNCTION__); 1728 result = TIOCSER_TEMT; 1729 } 1730 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1731 1732 if (copy_to_user(value, &result, sizeof(int))) 1733 return -EFAULT; 1734 return 0; 1735 } 1736 1737 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value) 1738 { 1739 unsigned int result = 0; 1740 struct tty_struct *tty = edge_port->port->tty; 1741 1742 if (!tty) 1743 return -ENOIOCTLCMD; 1744 1745 result = tty->read_cnt; 1746 1747 dbg("%s(%d) = %d", __FUNCTION__, edge_port->port->number, result); 1748 if (copy_to_user(value, &result, sizeof(int))) 1749 return -EFAULT; 1750 //return 0; 1751 return -ENOIOCTLCMD; 1752 } 1753 1754 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) 1755 { 1756 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1757 unsigned int mcr; 1758 1759 dbg("%s - port %d", __FUNCTION__, port->number); 1760 1761 mcr = edge_port->shadowMCR; 1762 if (set & TIOCM_RTS) 1763 mcr |= MCR_RTS; 1764 if (set & TIOCM_DTR) 1765 mcr |= MCR_DTR; 1766 if (set & TIOCM_LOOP) 1767 mcr |= MCR_LOOPBACK; 1768 1769 if (clear & TIOCM_RTS) 1770 mcr &= ~MCR_RTS; 1771 if (clear & TIOCM_DTR) 1772 mcr &= ~MCR_DTR; 1773 if (clear & TIOCM_LOOP) 1774 mcr &= ~MCR_LOOPBACK; 1775 1776 edge_port->shadowMCR = mcr; 1777 1778 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1779 1780 return 0; 1781 } 1782 1783 static int edge_tiocmget(struct usb_serial_port *port, struct file *file) 1784 { 1785 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1786 unsigned int result = 0; 1787 unsigned int msr; 1788 unsigned int mcr; 1789 1790 dbg("%s - port %d", __FUNCTION__, port->number); 1791 1792 msr = edge_port->shadowMSR; 1793 mcr = edge_port->shadowMCR; 1794 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1795 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1796 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1797 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1798 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1799 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1800 1801 1802 dbg("%s -- %x", __FUNCTION__, result); 1803 1804 return result; 1805 } 1806 1807 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo) 1808 { 1809 struct serial_struct tmp; 1810 1811 if (!retinfo) 1812 return -EFAULT; 1813 1814 memset(&tmp, 0, sizeof(tmp)); 1815 1816 tmp.type = PORT_16550A; 1817 tmp.line = edge_port->port->serial->minor; 1818 tmp.port = edge_port->port->number; 1819 tmp.irq = 0; 1820 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 1821 tmp.xmit_fifo_size = edge_port->maxTxCredits; 1822 tmp.baud_base = 9600; 1823 tmp.close_delay = 5*HZ; 1824 tmp.closing_wait = 30*HZ; 1825 // tmp.custom_divisor = state->custom_divisor; 1826 // tmp.hub6 = state->hub6; 1827 // tmp.io_type = state->io_type; 1828 1829 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 1830 return -EFAULT; 1831 return 0; 1832 } 1833 1834 1835 1836 /***************************************************************************** 1837 * SerialIoctl 1838 * this function handles any ioctl calls to the driver 1839 *****************************************************************************/ 1840 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) 1841 { 1842 DEFINE_WAIT(wait); 1843 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1844 struct async_icount cnow; 1845 struct async_icount cprev; 1846 struct serial_icounter_struct icount; 1847 1848 dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd); 1849 1850 switch (cmd) { 1851 // return number of bytes available 1852 case TIOCINQ: 1853 dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number); 1854 return get_number_bytes_avail(edge_port, (unsigned int __user *) arg); 1855 break; 1856 1857 case TIOCSERGETLSR: 1858 dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); 1859 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1860 return 0; 1861 1862 case TIOCGSERIAL: 1863 dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); 1864 return get_serial_info(edge_port, (struct serial_struct __user *) arg); 1865 1866 case TIOCSSERIAL: 1867 dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); 1868 break; 1869 1870 case TIOCMIWAIT: 1871 dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); 1872 cprev = edge_port->icount; 1873 while (1) { 1874 prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); 1875 schedule(); 1876 finish_wait(&edge_port->delta_msr_wait, &wait); 1877 /* see if a signal did it */ 1878 if (signal_pending(current)) 1879 return -ERESTARTSYS; 1880 cnow = edge_port->icount; 1881 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 1882 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 1883 return -EIO; /* no change => error */ 1884 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 1885 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 1886 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 1887 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) { 1888 return 0; 1889 } 1890 cprev = cnow; 1891 } 1892 /* NOTREACHED */ 1893 break; 1894 1895 case TIOCGICOUNT: 1896 cnow = edge_port->icount; 1897 memset(&icount, 0, sizeof(icount)); 1898 icount.cts = cnow.cts; 1899 icount.dsr = cnow.dsr; 1900 icount.rng = cnow.rng; 1901 icount.dcd = cnow.dcd; 1902 icount.rx = cnow.rx; 1903 icount.tx = cnow.tx; 1904 icount.frame = cnow.frame; 1905 icount.overrun = cnow.overrun; 1906 icount.parity = cnow.parity; 1907 icount.brk = cnow.brk; 1908 icount.buf_overrun = cnow.buf_overrun; 1909 1910 dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__, port->number, icount.rx, icount.tx ); 1911 if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) 1912 return -EFAULT; 1913 return 0; 1914 } 1915 1916 return -ENOIOCTLCMD; 1917 } 1918 1919 1920 /***************************************************************************** 1921 * SerialBreak 1922 * this function sends a break to the port 1923 *****************************************************************************/ 1924 static void edge_break (struct usb_serial_port *port, int break_state) 1925 { 1926 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1927 int status; 1928 1929 /* flush and chase */ 1930 edge_port->chaseResponsePending = TRUE; 1931 1932 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__); 1933 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0); 1934 if (status == 0) { 1935 // block until chase finished 1936 block_until_chase_response(edge_port); 1937 } else { 1938 edge_port->chaseResponsePending = FALSE; 1939 } 1940 1941 if (break_state == -1) { 1942 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__); 1943 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0); 1944 } else { 1945 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__); 1946 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0); 1947 } 1948 if (status) { 1949 dbg("%s - error sending break set/clear command.", __FUNCTION__); 1950 } 1951 1952 return; 1953 } 1954 1955 1956 /***************************************************************************** 1957 * process_rcvd_data 1958 * this function handles the data received on the bulk in pipe. 1959 *****************************************************************************/ 1960 static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength) 1961 { 1962 struct usb_serial_port *port; 1963 struct edgeport_port *edge_port; 1964 struct tty_struct *tty; 1965 __u16 lastBufferLength; 1966 __u16 rxLen; 1967 1968 dbg("%s", __FUNCTION__); 1969 1970 lastBufferLength = bufferLength + 1; 1971 1972 while (bufferLength > 0) { 1973 /* failsafe incase we get a message that we don't understand */ 1974 if (lastBufferLength == bufferLength) { 1975 dbg("%s - stuck in loop, exiting it.", __FUNCTION__); 1976 break; 1977 } 1978 lastBufferLength = bufferLength; 1979 1980 switch (edge_serial->rxState) { 1981 case EXPECT_HDR1: 1982 edge_serial->rxHeader1 = *buffer; 1983 ++buffer; 1984 --bufferLength; 1985 1986 if (bufferLength == 0) { 1987 edge_serial->rxState = EXPECT_HDR2; 1988 break; 1989 } 1990 /* otherwise, drop on through */ 1991 1992 case EXPECT_HDR2: 1993 edge_serial->rxHeader2 = *buffer; 1994 ++buffer; 1995 --bufferLength; 1996 1997 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2); 1998 1999 // Process depending on whether this header is 2000 // data or status 2001 2002 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 2003 // Decode this status header and goto EXPECT_HDR1 (if we 2004 // can process the status with only 2 bytes), or goto 2005 // EXPECT_HDR3 to get the third byte. 2006 2007 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 2008 edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1); 2009 2010 if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) { 2011 // This status needs additional bytes. Save what we have 2012 // and then wait for more data. 2013 edge_serial->rxStatusParam = edge_serial->rxHeader2; 2014 2015 edge_serial->rxState = EXPECT_HDR3; 2016 break; 2017 } 2018 2019 // We have all the header bytes, process the status now 2020 process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0); 2021 edge_serial->rxState = EXPECT_HDR1; 2022 break; 2023 } else { 2024 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 2025 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2); 2026 2027 dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining); 2028 2029 //ASSERT( DevExt->RxPort < DevExt->NumPorts ); 2030 //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH ); 2031 2032 if (bufferLength == 0 ) { 2033 edge_serial->rxState = EXPECT_DATA; 2034 break; 2035 } 2036 // Else, drop through 2037 } 2038 2039 case EXPECT_DATA: // Expect data 2040 2041 if (bufferLength < edge_serial->rxBytesRemaining) { 2042 rxLen = bufferLength; 2043 edge_serial->rxState = EXPECT_DATA; // Expect data to start next buffer 2044 } else { 2045 // BufLen >= RxBytesRemaining 2046 rxLen = edge_serial->rxBytesRemaining; 2047 edge_serial->rxState = EXPECT_HDR1; // Start another header next time 2048 } 2049 2050 bufferLength -= rxLen; 2051 edge_serial->rxBytesRemaining -= rxLen; 2052 2053 /* spit this data back into the tty driver if this port is open */ 2054 if (rxLen) { 2055 port = edge_serial->serial->port[edge_serial->rxPort]; 2056 edge_port = usb_get_serial_port_data(port); 2057 if (edge_port->open) { 2058 tty = edge_port->port->tty; 2059 if (tty) { 2060 dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort); 2061 edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen); 2062 } 2063 edge_port->icount.rx += rxLen; 2064 } 2065 buffer += rxLen; 2066 } 2067 2068 break; 2069 2070 case EXPECT_HDR3: // Expect 3rd byte of status header 2071 edge_serial->rxHeader3 = *buffer; 2072 ++buffer; 2073 --bufferLength; 2074 2075 // We have all the header bytes, process the status now 2076 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3); 2077 edge_serial->rxState = EXPECT_HDR1; 2078 break; 2079 2080 } 2081 } 2082 } 2083 2084 2085 /***************************************************************************** 2086 * process_rcvd_status 2087 * this function handles the any status messages received on the bulk in pipe. 2088 *****************************************************************************/ 2089 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3) 2090 { 2091 struct usb_serial_port *port; 2092 struct edgeport_port *edge_port; 2093 __u8 code = edge_serial->rxStatusCode; 2094 2095 /* switch the port pointer to the one being currently talked about */ 2096 port = edge_serial->serial->port[edge_serial->rxPort]; 2097 edge_port = usb_get_serial_port_data(port); 2098 if (edge_port == NULL) { 2099 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort); 2100 return; 2101 } 2102 2103 dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort); 2104 2105 if (code == IOSP_EXT_STATUS) { 2106 switch (byte2) { 2107 case IOSP_EXT_STATUS_CHASE_RSP: 2108 // we want to do EXT status regardless of port open/closed 2109 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 ); 2110 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call 2111 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do. 2112 // Also, we currently clear flag and close the port regardless of content of above's Byte3. 2113 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport, 2114 // like wait longer in block_until_chase_response, but for now we don't. 2115 edge_port->chaseResponsePending = FALSE; 2116 wake_up (&edge_port->wait_chase); 2117 return; 2118 2119 case IOSP_EXT_STATUS_RX_CHECK_RSP: 2120 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 ); 2121 //Port->RxCheckRsp = TRUE; 2122 return; 2123 } 2124 } 2125 2126 if (code == IOSP_STATUS_OPEN_RSP) { 2127 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 2128 edge_port->maxTxCredits = edge_port->txCredits; 2129 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits); 2130 handle_new_msr (edge_port, byte2); 2131 2132 /* send the current line settings to the port so we are in sync with any further termios calls */ 2133 if (edge_port->port->tty) 2134 change_port_settings (edge_port, edge_port->port->tty->termios); 2135 2136 /* we have completed the open */ 2137 edge_port->openPending = FALSE; 2138 edge_port->open = TRUE; 2139 wake_up(&edge_port->wait_open); 2140 return; 2141 } 2142 2143 // If port is closed, silently discard all rcvd status. We can 2144 // have cases where buffered status is received AFTER the close 2145 // port command is sent to the Edgeport. 2146 if ((!edge_port->open ) || (edge_port->closePending)) { 2147 return; 2148 } 2149 2150 switch (code) { 2151 // Not currently sent by Edgeport 2152 case IOSP_STATUS_LSR: 2153 dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); 2154 handle_new_lsr (edge_port, FALSE, byte2, 0); 2155 break; 2156 2157 case IOSP_STATUS_LSR_DATA: 2158 dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); 2159 // byte2 is LSR Register 2160 // byte3 is broken data byte 2161 handle_new_lsr (edge_port, TRUE, byte2, byte3); 2162 break; 2163 // 2164 // case IOSP_EXT_4_STATUS: 2165 // dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3); 2166 // break; 2167 // 2168 case IOSP_STATUS_MSR: 2169 dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2); 2170 2171 // Process this new modem status and generate appropriate 2172 // events, etc, based on the new status. This routine 2173 // also saves the MSR in Port->ShadowMsr. 2174 handle_new_msr(edge_port, byte2); 2175 break; 2176 2177 default: 2178 dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code); 2179 break; 2180 } 2181 2182 return; 2183 } 2184 2185 2186 /***************************************************************************** 2187 * edge_tty_recv 2188 * this function passes data on to the tty flip buffer 2189 *****************************************************************************/ 2190 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length) 2191 { 2192 int cnt; 2193 2194 do { 2195 if (tty->flip.count >= TTY_FLIPBUF_SIZE) { 2196 tty_flip_buffer_push(tty); 2197 if (tty->flip.count >= TTY_FLIPBUF_SIZE) { 2198 dev_err(dev, "%s - dropping data, %d bytes lost\n", 2199 __FUNCTION__, length); 2200 return; 2201 } 2202 } 2203 cnt = min(length, TTY_FLIPBUF_SIZE - tty->flip.count); 2204 memcpy(tty->flip.char_buf_ptr, data, cnt); 2205 memset(tty->flip.flag_buf_ptr, 0, cnt); 2206 tty->flip.char_buf_ptr += cnt; 2207 tty->flip.flag_buf_ptr += cnt; 2208 tty->flip.count += cnt; 2209 data += cnt; 2210 length -= cnt; 2211 } while (length > 0); 2212 2213 tty_flip_buffer_push(tty); 2214 } 2215 2216 2217 /***************************************************************************** 2218 * handle_new_msr 2219 * this function handles any change to the msr register for a port. 2220 *****************************************************************************/ 2221 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 2222 { 2223 struct async_icount *icount; 2224 2225 dbg("%s %02x", __FUNCTION__, newMsr); 2226 2227 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 2228 icount = &edge_port->icount; 2229 2230 /* update input line counters */ 2231 if (newMsr & EDGEPORT_MSR_DELTA_CTS) { 2232 icount->cts++; 2233 } 2234 if (newMsr & EDGEPORT_MSR_DELTA_DSR) { 2235 icount->dsr++; 2236 } 2237 if (newMsr & EDGEPORT_MSR_DELTA_CD) { 2238 icount->dcd++; 2239 } 2240 if (newMsr & EDGEPORT_MSR_DELTA_RI) { 2241 icount->rng++; 2242 } 2243 wake_up_interruptible(&edge_port->delta_msr_wait); 2244 } 2245 2246 /* Save the new modem status */ 2247 edge_port->shadowMSR = newMsr & 0xf0; 2248 2249 return; 2250 } 2251 2252 2253 /***************************************************************************** 2254 * handle_new_lsr 2255 * this function handles any change to the lsr register for a port. 2256 *****************************************************************************/ 2257 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data) 2258 { 2259 __u8 newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 2260 struct async_icount *icount; 2261 2262 dbg("%s - %02x", __FUNCTION__, newLsr); 2263 2264 edge_port->shadowLSR = lsr; 2265 2266 if (newLsr & LSR_BREAK) { 2267 // 2268 // Parity and Framing errors only count if they 2269 // occur exclusive of a break being 2270 // received. 2271 // 2272 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 2273 } 2274 2275 /* Place LSR data byte into Rx buffer */ 2276 if (lsrData && edge_port->port->tty) 2277 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1); 2278 2279 /* update input line counters */ 2280 icount = &edge_port->icount; 2281 if (newLsr & LSR_BREAK) { 2282 icount->brk++; 2283 } 2284 if (newLsr & LSR_OVER_ERR) { 2285 icount->overrun++; 2286 } 2287 if (newLsr & LSR_PAR_ERR) { 2288 icount->parity++; 2289 } 2290 if (newLsr & LSR_FRM_ERR) { 2291 icount->frame++; 2292 } 2293 2294 return; 2295 } 2296 2297 2298 /**************************************************************************** 2299 * sram_write 2300 * writes a number of bytes to the Edgeport device's sram starting at the 2301 * given address. 2302 * If successful returns the number of bytes written, otherwise it returns 2303 * a negative error number of the problem. 2304 ****************************************************************************/ 2305 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) 2306 { 2307 int result; 2308 __u16 current_length; 2309 unsigned char *transfer_buffer; 2310 2311 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); 2312 2313 transfer_buffer = kmalloc (64, GFP_KERNEL); 2314 if (!transfer_buffer) { 2315 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); 2316 return -ENOMEM; 2317 } 2318 2319 /* need to split these writes up into 64 byte chunks */ 2320 result = 0; 2321 while (length > 0) { 2322 if (length > 64) { 2323 current_length = 64; 2324 } else { 2325 current_length = length; 2326 } 2327 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); 2328 memcpy (transfer_buffer, data, current_length); 2329 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM, 2330 0x40, addr, extAddr, transfer_buffer, current_length, 300); 2331 if (result < 0) 2332 break; 2333 length -= current_length; 2334 addr += current_length; 2335 data += current_length; 2336 } 2337 2338 kfree (transfer_buffer); 2339 return result; 2340 } 2341 2342 2343 /**************************************************************************** 2344 * rom_write 2345 * writes a number of bytes to the Edgeport device's ROM starting at the 2346 * given address. 2347 * If successful returns the number of bytes written, otherwise it returns 2348 * a negative error number of the problem. 2349 ****************************************************************************/ 2350 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) 2351 { 2352 int result; 2353 __u16 current_length; 2354 unsigned char *transfer_buffer; 2355 2356 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); 2357 2358 transfer_buffer = kmalloc (64, GFP_KERNEL); 2359 if (!transfer_buffer) { 2360 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); 2361 return -ENOMEM; 2362 } 2363 2364 /* need to split these writes up into 64 byte chunks */ 2365 result = 0; 2366 while (length > 0) { 2367 if (length > 64) { 2368 current_length = 64; 2369 } else { 2370 current_length = length; 2371 } 2372 // dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); 2373 memcpy (transfer_buffer, data, current_length); 2374 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM, 2375 0x40, addr, extAddr, transfer_buffer, current_length, 300); 2376 if (result < 0) 2377 break; 2378 length -= current_length; 2379 addr += current_length; 2380 data += current_length; 2381 } 2382 2383 kfree (transfer_buffer); 2384 return result; 2385 } 2386 2387 2388 /**************************************************************************** 2389 * rom_read 2390 * reads a number of bytes from the Edgeport device starting at the given 2391 * address. 2392 * If successful returns the number of bytes read, otherwise it returns 2393 * a negative error number of the problem. 2394 ****************************************************************************/ 2395 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data) 2396 { 2397 int result; 2398 __u16 current_length; 2399 unsigned char *transfer_buffer; 2400 2401 dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length); 2402 2403 transfer_buffer = kmalloc (64, GFP_KERNEL); 2404 if (!transfer_buffer) { 2405 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64); 2406 return -ENOMEM; 2407 } 2408 2409 /* need to split these reads up into 64 byte chunks */ 2410 result = 0; 2411 while (length > 0) { 2412 if (length > 64) { 2413 current_length = 64; 2414 } else { 2415 current_length = length; 2416 } 2417 // dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length); 2418 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM, 2419 0xC0, addr, extAddr, transfer_buffer, current_length, 300); 2420 if (result < 0) 2421 break; 2422 memcpy (data, transfer_buffer, current_length); 2423 length -= current_length; 2424 addr += current_length; 2425 data += current_length; 2426 } 2427 2428 kfree (transfer_buffer); 2429 return result; 2430 } 2431 2432 2433 /**************************************************************************** 2434 * send_iosp_ext_cmd 2435 * Is used to send a IOSP message to the Edgeport device 2436 ****************************************************************************/ 2437 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param) 2438 { 2439 unsigned char *buffer; 2440 unsigned char *currentCommand; 2441 int length = 0; 2442 int status = 0; 2443 2444 dbg("%s - %d, %d", __FUNCTION__, command, param); 2445 2446 buffer = kmalloc (10, GFP_ATOMIC); 2447 if (!buffer) { 2448 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10); 2449 return -ENOMEM; 2450 } 2451 2452 currentCommand = buffer; 2453 2454 MAKE_CMD_EXT_CMD (¤tCommand, &length, 2455 edge_port->port->number - edge_port->port->serial->minor, 2456 command, param); 2457 2458 status = write_cmd_usb (edge_port, buffer, length); 2459 if (status) { 2460 /* something bad happened, let's free up the memory */ 2461 kfree(buffer); 2462 } 2463 2464 return status; 2465 } 2466 2467 2468 /***************************************************************************** 2469 * write_cmd_usb 2470 * this function writes the given buffer out to the bulk write endpoint. 2471 *****************************************************************************/ 2472 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length) 2473 { 2474 struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial); 2475 int status = 0; 2476 struct urb *urb; 2477 int timeout; 2478 2479 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer); 2480 2481 /* Allocate our next urb */ 2482 urb = usb_alloc_urb (0, GFP_ATOMIC); 2483 if (!urb) 2484 return -ENOMEM; 2485 2486 CmdUrbs++; 2487 dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs); 2488 2489 usb_fill_bulk_urb (urb, edge_serial->serial->dev, 2490 usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint), 2491 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2492 2493 edge_port->commandPending = TRUE; 2494 status = usb_submit_urb(urb, GFP_ATOMIC); 2495 2496 if (status) { 2497 /* something went wrong */ 2498 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status); 2499 usb_kill_urb(urb); 2500 usb_free_urb(urb); 2501 CmdUrbs--; 2502 return status; 2503 } 2504 2505 // wait for command to finish 2506 timeout = COMMAND_TIMEOUT; 2507 #if 0 2508 wait_event (&edge_port->wait_command, (edge_port->commandPending == FALSE)); 2509 2510 if (edge_port->commandPending == TRUE) { 2511 /* command timed out */ 2512 dbg("%s - command timed out", __FUNCTION__); 2513 status = -EINVAL; 2514 } 2515 #endif 2516 return status; 2517 } 2518 2519 2520 /***************************************************************************** 2521 * send_cmd_write_baud_rate 2522 * this function sends the proper command to change the baud rate of the 2523 * specified port. 2524 *****************************************************************************/ 2525 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate) 2526 { 2527 unsigned char *cmdBuffer; 2528 unsigned char *currCmd; 2529 int cmdLen = 0; 2530 int divisor; 2531 int status; 2532 unsigned char number = edge_port->port->number - edge_port->port->serial->minor; 2533 2534 dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate); 2535 2536 status = calc_baud_rate_divisor (baudRate, &divisor); 2537 if (status) { 2538 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__); 2539 return status; 2540 } 2541 2542 // Alloc memory for the string of commands. 2543 cmdBuffer = kmalloc (0x100, GFP_ATOMIC); 2544 if (!cmdBuffer) { 2545 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100); 2546 return -ENOMEM; 2547 } 2548 currCmd = cmdBuffer; 2549 2550 // Enable access to divisor latch 2551 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE ); 2552 2553 // Write the divisor itself 2554 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) ); 2555 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) ); 2556 2557 // Restore original value to disable access to divisor latch 2558 MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR); 2559 2560 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen ); 2561 if (status) { 2562 /* something bad happened, let's free up the memory */ 2563 kfree (cmdBuffer); 2564 } 2565 2566 return status; 2567 } 2568 2569 2570 /***************************************************************************** 2571 * calc_baud_rate_divisor 2572 * this function calculates the proper baud rate divisor for the specified 2573 * baud rate. 2574 *****************************************************************************/ 2575 static int calc_baud_rate_divisor (int baudrate, int *divisor) 2576 { 2577 int i; 2578 __u16 custom; 2579 2580 2581 dbg("%s - %d", __FUNCTION__, baudrate); 2582 2583 for (i = 0; i < NUM_ENTRIES(divisor_table); i++) { 2584 if ( divisor_table[i].BaudRate == baudrate ) { 2585 *divisor = divisor_table[i].Divisor; 2586 return 0; 2587 } 2588 } 2589 2590 // We have tried all of the standard baud rates 2591 // lets try to calculate the divisor for this baud rate 2592 // Make sure the baud rate is reasonable 2593 if (baudrate > 50 && baudrate < 230400) { 2594 // get divisor 2595 custom = (__u16)((230400L + baudrate/2) / baudrate); 2596 2597 *divisor = custom; 2598 2599 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom); 2600 return 0; 2601 } 2602 2603 return -1; 2604 } 2605 2606 2607 /***************************************************************************** 2608 * send_cmd_write_uart_register 2609 * this function builds up a uart register message and sends to to the device. 2610 *****************************************************************************/ 2611 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue) 2612 { 2613 unsigned char *cmdBuffer; 2614 unsigned char *currCmd; 2615 unsigned long cmdLen = 0; 2616 int status; 2617 2618 dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue); 2619 2620 // Alloc memory for the string of commands. 2621 cmdBuffer = kmalloc (0x10, GFP_ATOMIC); 2622 if (cmdBuffer == NULL ) { 2623 return -ENOMEM; 2624 } 2625 2626 currCmd = cmdBuffer; 2627 2628 // Build a cmd in the buffer to write the given register 2629 MAKE_CMD_WRITE_REG (&currCmd, &cmdLen, 2630 edge_port->port->number - edge_port->port->serial->minor, 2631 regNum, regValue); 2632 2633 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2634 if (status) { 2635 /* something bad happened, let's free up the memory */ 2636 kfree (cmdBuffer); 2637 } 2638 2639 return status; 2640 } 2641 2642 2643 /***************************************************************************** 2644 * change_port_settings 2645 * This routine is called to set the UART on the device to match the specified 2646 * new settings. 2647 *****************************************************************************/ 2648 #ifndef CMSPAR 2649 #define CMSPAR 0 2650 #endif 2651 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios) 2652 { 2653 struct tty_struct *tty; 2654 int baud; 2655 unsigned cflag; 2656 __u8 mask = 0xff; 2657 __u8 lData; 2658 __u8 lParity; 2659 __u8 lStop; 2660 __u8 rxFlow; 2661 __u8 txFlow; 2662 int status; 2663 2664 dbg("%s - port %d", __FUNCTION__, edge_port->port->number); 2665 2666 if ((!edge_port->open) && 2667 (!edge_port->openPending)) { 2668 dbg("%s - port not opened", __FUNCTION__); 2669 return; 2670 } 2671 2672 tty = edge_port->port->tty; 2673 if ((!tty) || 2674 (!tty->termios)) { 2675 dbg("%s - no tty structures", __FUNCTION__); 2676 return; 2677 } 2678 2679 cflag = tty->termios->c_cflag; 2680 2681 switch (cflag & CSIZE) { 2682 case CS5: lData = LCR_BITS_5; mask = 0x1f; dbg("%s - data bits = 5", __FUNCTION__); break; 2683 case CS6: lData = LCR_BITS_6; mask = 0x3f; dbg("%s - data bits = 6", __FUNCTION__); break; 2684 case CS7: lData = LCR_BITS_7; mask = 0x7f; dbg("%s - data bits = 7", __FUNCTION__); break; 2685 default: 2686 case CS8: lData = LCR_BITS_8; dbg("%s - data bits = 8", __FUNCTION__); break; 2687 } 2688 2689 lParity = LCR_PAR_NONE; 2690 if (cflag & PARENB) { 2691 if (cflag & CMSPAR) { 2692 if (cflag & PARODD) { 2693 lParity = LCR_PAR_MARK; 2694 dbg("%s - parity = mark", __FUNCTION__); 2695 } else { 2696 lParity = LCR_PAR_SPACE; 2697 dbg("%s - parity = space", __FUNCTION__); 2698 } 2699 } else if (cflag & PARODD) { 2700 lParity = LCR_PAR_ODD; 2701 dbg("%s - parity = odd", __FUNCTION__); 2702 } else { 2703 lParity = LCR_PAR_EVEN; 2704 dbg("%s - parity = even", __FUNCTION__); 2705 } 2706 } else { 2707 dbg("%s - parity = none", __FUNCTION__); 2708 } 2709 2710 if (cflag & CSTOPB) { 2711 lStop = LCR_STOP_2; 2712 dbg("%s - stop bits = 2", __FUNCTION__); 2713 } else { 2714 lStop = LCR_STOP_1; 2715 dbg("%s - stop bits = 1", __FUNCTION__); 2716 } 2717 2718 /* figure out the flow control settings */ 2719 rxFlow = txFlow = 0x00; 2720 if (cflag & CRTSCTS) { 2721 rxFlow |= IOSP_RX_FLOW_RTS; 2722 txFlow |= IOSP_TX_FLOW_CTS; 2723 dbg("%s - RTS/CTS is enabled", __FUNCTION__); 2724 } else { 2725 dbg("%s - RTS/CTS is disabled", __FUNCTION__); 2726 } 2727 2728 /* if we are implementing XON/XOFF, set the start and stop character in the device */ 2729 if (I_IXOFF(tty) || I_IXON(tty)) { 2730 unsigned char stop_char = STOP_CHAR(tty); 2731 unsigned char start_char = START_CHAR(tty); 2732 2733 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char); 2734 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char); 2735 2736 /* if we are implementing INBOUND XON/XOFF */ 2737 if (I_IXOFF(tty)) { 2738 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2739 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); 2740 } else { 2741 dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__); 2742 } 2743 2744 /* if we are implementing OUTBOUND XON/XOFF */ 2745 if (I_IXON(tty)) { 2746 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2747 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char); 2748 } else { 2749 dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__); 2750 } 2751 } 2752 2753 /* Set flow control to the configured value */ 2754 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2755 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2756 2757 2758 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2759 edge_port->shadowLCR |= (lData | lParity | lStop); 2760 2761 edge_port->validDataMask = mask; 2762 2763 /* Send the updated LCR value to the EdgePort */ 2764 status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR); 2765 if (status != 0) { 2766 return; 2767 } 2768 2769 /* set up the MCR register and send it to the EdgePort */ 2770 edge_port->shadowMCR = MCR_MASTER_IE; 2771 if (cflag & CBAUD) { 2772 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2773 } 2774 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 2775 if (status != 0) { 2776 return; 2777 } 2778 2779 /* Determine divisor based on baud rate */ 2780 baud = tty_get_baud_rate(tty); 2781 if (!baud) { 2782 /* pick a default, any default... */ 2783 baud = 9600; 2784 } 2785 2786 dbg("%s - baud rate = %d", __FUNCTION__, baud); 2787 status = send_cmd_write_baud_rate (edge_port, baud); 2788 2789 return; 2790 } 2791 2792 2793 /**************************************************************************** 2794 * unicode_to_ascii 2795 * Turns a string from Unicode into ASCII. 2796 * Doesn't do a good job with any characters that are outside the normal 2797 * ASCII range, but it's only for debugging... 2798 * NOTE: expects the unicode in LE format 2799 ****************************************************************************/ 2800 static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size) 2801 { 2802 int i; 2803 2804 if (unicode_size <= 0) 2805 return; 2806 2807 for (i = 0; i < unicode_size; ++i) 2808 string[i] = (char)(le16_to_cpu(unicode[i])); 2809 string[unicode_size] = 0x00; 2810 } 2811 2812 2813 /**************************************************************************** 2814 * get_manufacturing_desc 2815 * reads in the manufacturing descriptor and stores it into the serial 2816 * structure. 2817 ****************************************************************************/ 2818 static void get_manufacturing_desc (struct edgeport_serial *edge_serial) 2819 { 2820 int response; 2821 2822 dbg("getting manufacturer descriptor"); 2823 2824 response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2825 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN, 2826 (__u8 *)(&edge_serial->manuf_descriptor)); 2827 2828 if (response < 1) { 2829 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n"); 2830 } else { 2831 char string[30]; 2832 dbg("**Manufacturer Descriptor"); 2833 dbg(" RomSize: %dK", edge_serial->manuf_descriptor.RomSize); 2834 dbg(" RamSize: %dK", edge_serial->manuf_descriptor.RamSize); 2835 dbg(" CpuRev: %d", edge_serial->manuf_descriptor.CpuRev); 2836 dbg(" BoardRev: %d", edge_serial->manuf_descriptor.BoardRev); 2837 dbg(" NumPorts: %d", edge_serial->manuf_descriptor.NumPorts); 2838 dbg(" DescDate: %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900); 2839 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1); 2840 dbg(" SerialNumber: %s", string); 2841 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1); 2842 dbg(" AssemblyNumber: %s", string); 2843 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1); 2844 dbg(" OemAssyNumber: %s", string); 2845 dbg(" UartType: %d", edge_serial->manuf_descriptor.UartType); 2846 dbg(" IonPid: %d", edge_serial->manuf_descriptor.IonPid); 2847 dbg(" IonConfig: %d", edge_serial->manuf_descriptor.IonConfig); 2848 } 2849 } 2850 2851 2852 /**************************************************************************** 2853 * get_boot_desc 2854 * reads in the bootloader descriptor and stores it into the serial 2855 * structure. 2856 ****************************************************************************/ 2857 static void get_boot_desc (struct edgeport_serial *edge_serial) 2858 { 2859 int response; 2860 2861 dbg("getting boot descriptor"); 2862 2863 response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2864 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN, 2865 (__u8 *)(&edge_serial->boot_descriptor)); 2866 2867 if (response < 1) { 2868 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n"); 2869 } else { 2870 dbg("**Boot Descriptor:"); 2871 dbg(" BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2872 dbg(" MajorVersion: %d", edge_serial->boot_descriptor.MajorVersion); 2873 dbg(" MinorVersion: %d", edge_serial->boot_descriptor.MinorVersion); 2874 dbg(" BuildNumber: %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2875 dbg(" Capabilities: 0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2876 dbg(" UConfig0: %d", edge_serial->boot_descriptor.UConfig0); 2877 dbg(" UConfig1: %d", edge_serial->boot_descriptor.UConfig1); 2878 } 2879 } 2880 2881 2882 /**************************************************************************** 2883 * load_application_firmware 2884 * This is called to load the application firmware to the device 2885 ****************************************************************************/ 2886 static void load_application_firmware (struct edgeport_serial *edge_serial) 2887 { 2888 struct edge_firmware_image_record *record; 2889 unsigned char *firmware; 2890 unsigned char *FirmwareImage; 2891 int ImageSize; 2892 int response; 2893 2894 2895 switch (edge_serial->product_info.iDownloadFile) { 2896 case EDGE_DOWNLOAD_FILE_I930: 2897 dbg("downloading firmware version (930) %d.%d.%d", 2898 OperationalCodeImageVersion_GEN1.MajorVersion, 2899 OperationalCodeImageVersion_GEN1.MinorVersion, 2900 OperationalCodeImageVersion_GEN1.BuildNumber); 2901 firmware = &OperationalCodeImage_GEN1[0]; 2902 FirmwareImage = &OperationalCodeImage_GEN1[0]; 2903 ImageSize = sizeof(OperationalCodeImage_GEN1); 2904 break; 2905 2906 case EDGE_DOWNLOAD_FILE_80251: 2907 dbg("downloading firmware version (80251) %d.%d.%d", 2908 OperationalCodeImageVersion_GEN2.MajorVersion, 2909 OperationalCodeImageVersion_GEN2.MinorVersion, 2910 OperationalCodeImageVersion_GEN2.BuildNumber); 2911 firmware = &OperationalCodeImage_GEN2[0]; 2912 FirmwareImage = &OperationalCodeImage_GEN2[0]; 2913 ImageSize = sizeof(OperationalCodeImage_GEN2); 2914 break; 2915 2916 case EDGE_DOWNLOAD_FILE_NONE: 2917 dbg ("No download file specified, skipping download\n"); 2918 return; 2919 2920 default: 2921 return; 2922 } 2923 2924 2925 for (;;) { 2926 record = (struct edge_firmware_image_record *)firmware; 2927 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]); 2928 if (response < 0) { 2929 dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len)); 2930 break; 2931 } 2932 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len); 2933 if (firmware >= &FirmwareImage[ImageSize]) { 2934 break; 2935 } 2936 } 2937 2938 dbg("sending exec_dl_code"); 2939 response = usb_control_msg (edge_serial->serial->dev, 2940 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2941 USB_REQUEST_ION_EXEC_DL_CODE, 2942 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2943 2944 return; 2945 } 2946 2947 2948 /**************************************************************************** 2949 * edge_startup 2950 ****************************************************************************/ 2951 static int edge_startup (struct usb_serial *serial) 2952 { 2953 struct edgeport_serial *edge_serial; 2954 struct edgeport_port *edge_port; 2955 struct usb_device *dev; 2956 int i; 2957 2958 dev = serial->dev; 2959 2960 /* create our private serial structure */ 2961 edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL); 2962 if (edge_serial == NULL) { 2963 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); 2964 return -ENOMEM; 2965 } 2966 memset (edge_serial, 0, sizeof(struct edgeport_serial)); 2967 spin_lock_init(&edge_serial->es_lock); 2968 edge_serial->serial = serial; 2969 usb_set_serial_data(serial, edge_serial); 2970 2971 /* get the name for the device from the device */ 2972 if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) { 2973 edge_serial->name[i-1] = ' '; 2974 } 2975 2976 get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]); 2977 2978 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2979 2980 /* get the manufacturing descriptor for this device */ 2981 get_manufacturing_desc (edge_serial); 2982 2983 /* get the boot descriptor */ 2984 get_boot_desc (edge_serial); 2985 2986 get_product_info(edge_serial); 2987 2988 /* set the number of ports from the manufacturing description */ 2989 /* serial->num_ports = serial->product_info.NumPorts; */ 2990 if (edge_serial->product_info.NumPorts != serial->num_ports) { 2991 warn("%s - Device Reported %d serial ports vs core " 2992 "thinking we have %d ports, email greg@kroah.com this info.", 2993 __FUNCTION__, edge_serial->product_info.NumPorts, 2994 serial->num_ports); 2995 } 2996 2997 dbg("%s - time 1 %ld", __FUNCTION__, jiffies); 2998 2999 /* now load the application firmware into this device */ 3000 load_application_firmware (edge_serial); 3001 3002 dbg("%s - time 2 %ld", __FUNCTION__, jiffies); 3003 3004 /* Check current Edgeport EEPROM and update if necessary */ 3005 update_edgeport_E2PROM (edge_serial); 3006 3007 dbg("%s - time 3 %ld", __FUNCTION__, jiffies); 3008 3009 /* set the configuration to use #1 */ 3010 // dbg("set_configuration 1"); 3011 // usb_set_configuration (dev, 1); 3012 3013 /* we set up the pointers to the endpoints in the edge_open function, 3014 * as the structures aren't created yet. */ 3015 3016 /* set up our port private structures */ 3017 for (i = 0; i < serial->num_ports; ++i) { 3018 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL); 3019 if (edge_port == NULL) { 3020 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__); 3021 usb_set_serial_data(serial, NULL); 3022 kfree(edge_serial); 3023 return -ENOMEM; 3024 } 3025 memset (edge_port, 0, sizeof(struct edgeport_port)); 3026 spin_lock_init(&edge_port->ep_lock); 3027 edge_port->port = serial->port[i]; 3028 usb_set_serial_port_data(serial->port[i], edge_port); 3029 } 3030 3031 return 0; 3032 } 3033 3034 3035 /**************************************************************************** 3036 * edge_shutdown 3037 * This function is called whenever the device is removed from the usb bus. 3038 ****************************************************************************/ 3039 static void edge_shutdown (struct usb_serial *serial) 3040 { 3041 int i; 3042 3043 dbg("%s", __FUNCTION__); 3044 3045 /* stop reads and writes on all ports */ 3046 for (i=0; i < serial->num_ports; ++i) { 3047 kfree (usb_get_serial_port_data(serial->port[i])); 3048 usb_set_serial_port_data(serial->port[i], NULL); 3049 } 3050 kfree (usb_get_serial_data(serial)); 3051 usb_set_serial_data(serial, NULL); 3052 } 3053 3054 3055 /**************************************************************************** 3056 * edgeport_init 3057 * This is called by the module subsystem, or on startup to initialize us 3058 ****************************************************************************/ 3059 static int __init edgeport_init(void) 3060 { 3061 int retval; 3062 3063 retval = usb_serial_register(&edgeport_2port_device); 3064 if (retval) 3065 goto failed_2port_device_register; 3066 retval = usb_serial_register(&edgeport_4port_device); 3067 if (retval) 3068 goto failed_4port_device_register; 3069 retval = usb_serial_register(&edgeport_8port_device); 3070 if (retval) 3071 goto failed_8port_device_register; 3072 retval = usb_register(&io_driver); 3073 if (retval) 3074 goto failed_usb_register; 3075 info(DRIVER_DESC " " DRIVER_VERSION); 3076 return 0; 3077 3078 failed_usb_register: 3079 usb_serial_deregister(&edgeport_8port_device); 3080 failed_8port_device_register: 3081 usb_serial_deregister(&edgeport_4port_device); 3082 failed_4port_device_register: 3083 usb_serial_deregister(&edgeport_2port_device); 3084 failed_2port_device_register: 3085 return retval; 3086 } 3087 3088 3089 /**************************************************************************** 3090 * edgeport_exit 3091 * Called when the driver is about to be unloaded. 3092 ****************************************************************************/ 3093 static void __exit edgeport_exit (void) 3094 { 3095 usb_deregister (&io_driver); 3096 usb_serial_deregister (&edgeport_2port_device); 3097 usb_serial_deregister (&edgeport_4port_device); 3098 usb_serial_deregister (&edgeport_8port_device); 3099 } 3100 3101 module_init(edgeport_init); 3102 module_exit(edgeport_exit); 3103 3104 /* Module information */ 3105 MODULE_AUTHOR( DRIVER_AUTHOR ); 3106 MODULE_DESCRIPTION( DRIVER_DESC ); 3107 MODULE_LICENSE("GPL"); 3108 3109 module_param(debug, bool, S_IRUGO | S_IWUSR); 3110 MODULE_PARM_DESC(debug, "Debug enabled or not"); 3111 3112 module_param(low_latency, bool, S_IRUGO | S_IWUSR); 3113 MODULE_PARM_DESC(low_latency, "Low latency enabled or not"); 3114