drivers/usb/serial/io_edgeport.c

   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  * Version history:
  27  *
  28  * 2003_04_03 al borchers
  29  *  - fixed a bug (that shows up with dosemu) where the tty struct is
  30  *    used in a callback after it has been freed
  31  *
  32  * 2.3 2002_03_08 greg kroah-hartman
  33  *      - fixed bug when multiple devices were attached at the same time.
  34  *
  35  * 2.2 2001_11_14 greg kroah-hartman
  36  *      - fixed bug in edge_close that kept the port from being used more
  37  *        than once.
  38  *      - fixed memory leak on device removal.
  39  *      - fixed potential double free of memory when command urb submitting
  40  *        failed.
  41  *      - other small cleanups when the device is removed
  42  *
  43  * 2.1 2001_07_09 greg kroah-hartman
  44  *      - added support for TIOCMBIS and TIOCMBIC.
  45  *
  46  *     (04/08/2001) gb
  47  *      - Identify version on module load.
  48  *
  49  * 2.0 2001_03_05 greg kroah-hartman
  50  *      - reworked entire driver to fit properly in with the other usb-serial
  51  *        drivers.  Occasional oopses still happen, but it's a good start.
  52  *
  53  * 1.2.3 (02/23/2001) greg kroah-hartman
  54  *      - changed device table to work properly for 2.4.x final format.
  55  *      - fixed problem with dropping data at high data rates.
  56  *
  57  * 1.2.2 (11/27/2000) greg kroah-hartman
  58  *      - cleaned up more NTisms.
  59  *      - Added device table for 2.4.0-test11
  60  *
  61  * 1.2.1 (11/08/2000) greg kroah-hartman
  62  *      - Started to clean up NTisms.
  63  *      - Fixed problem with dev field of urb for kernels >= 2.4.0-test9
  64  *
  65  * 1.2 (10/17/2000) David Iacovelli
  66  *      Remove all EPIC code and GPL source
  67  *  Fix RELEVANT_IFLAG macro to include flow control
  68  *  changes port configuration changes.
  69  *  Fix redefinition of SERIAL_MAGIC
  70  *  Change all timeout values to 5 seconds
  71  *  Tried to fix the UHCI multiple urb submission, but failed miserably.
  72  *  it seems to work fine with OHCI.
  73  *  ( Greg take a look at the #if 0 at end of WriteCmdUsb() we must
  74  *    find a way to work arount this UHCI bug )
  75  *
  76  * 1.1 (10/11/2000) David Iacovelli
  77  *  Fix XON/XOFF flow control to support both IXON and IXOFF
  78  *
  79  * 0.9.27 (06/30/2000) David Iacovelli
  80  *  Added transmit queue and now allocate urb for command writes.
  81  *
  82  * 0.9.26 (06/29/2000) David Iacovelli
  83  *  Add support for 80251 based edgeport
  84  *
  85  * 0.9.25 (06/27/2000) David Iacovelli
  86  *  Do not close the port if it has multiple opens.
  87  *
  88  * 0.9.24 (05/26/2000) David Iacovelli
  89  *  Add IOCTLs to support RXTX and JAVA POS
  90  *  and first cut at running BlackBox Demo
  91  *
  92  * 0.9.23 (05/24/2000) David Iacovelli
  93  *  Add IOCTLs to support RXTX and JAVA POS
  94  *
  95  * 0.9.22 (05/23/2000) David Iacovelli
  96  *  fixed bug in enumeration.  If epconfig turns on mapping by
  97  *  path after a device is already plugged in, we now update
  98  *  the mapping correctly
  99  *
 100  * 0.9.21 (05/16/2000) David Iacovelli
 101  *  Added BlockUntilChaseResp() to also wait for txcredits
 102  *  Updated the way we allocate and handle write URBs
 103  *      Add debug code to dump buffers
 104  *
 105  * 0.9.20 (05/01/2000) David Iacovelli
 106  *      change driver to use usb/tts/
 107  *
 108  * 0.9.19 (05/01/2000) David Iacovelli
 109  *  Update code to compile if DEBUG is off
 110  *
 111  * 0.9.18 (04/28/2000) David Iacovelli
 112  *  cleanup and test tty_register with devfs
 113  *
 114  * 0.9.17 (04/27/2000) greg kroah-hartman
 115  *      changed tty_register around to be like the way it
 116  *      was before, but now it works properly with devfs.
 117  *
 118  * 0.9.16 (04/26/2000) david iacovelli
 119  *  Fixed bug in GetProductInfo()
 120  *
 121  * 0.9.15 (04/25/2000) david iacovelli
 122  *      Updated enumeration
 123  *
 124  * 0.9.14 (04/24/2000) david iacovelli
 125  *  Removed all config/status IOCTLS and
 126  *  converted to using /proc/edgeport
 127  *  still playing with devfs
 128  *
 129  * 0.9.13 (04/24/2000) david iacovelli
 130  *  Removed configuration based on ttyUSB0
 131  *  Added support for configuration using /prod/edgeport
 132  *  first attempt at using devfs (not working yet!)
 133  *  Added IOCTL to GetProductInfo()
 134  *  Added support for custom baud rates
 135  *      Add support for random port numbers
 136  *
 137  * 0.9.12 (04/18/2000) david iacovelli
 138  *      added additional configuration IOCTLs
 139  *  use ttyUSB0 for configuration
 140  *
 141  * 0.9.11 (04/17/2000) greg kroah-hartman
 142  *      fixed module initialization race conditions.
 143  *      made all urbs dynamically allocated.
 144  *      made driver devfs compatible. now it only registers the tty device
 145  *      when the device is actually plugged in.
 146  *
 147  * 0.9.10 (04/13/2000) greg kroah-hartman
 148  *      added proc interface framework.
 149  *
 150  * 0.9.9 (04/13/2000) david iacovelli
 151  *      added enumeration code and ioctls to configure the device
 152  *
 153  * 0.9.8 (04/12/2000) david iacovelli
 154  *  Change interrupt read start when device is plugged in
 155  *  and stop when device is removed
 156  *      process interrupt reads when all ports are closed
 157  *  (keep value of rxBytesAvail consistent with the edgeport)
 158  *  set the USB_BULK_QUEUE flag so that we can shove a bunch
 159  *  of urbs at once down the pipe
 160  *
 161  * 0.9.7 (04/10/2000) david iacovelli
 162  *      start to add enumeration code.
 163  *  generate serial number for epic devices
 164  *  add support for kdb
 165  *
 166  * 0.9.6 (03/30/2000) david iacovelli
 167  *  add IOCTL to get string, manufacture, and boot descriptors
 168  *
 169  * 0.9.5 (03/14/2000) greg kroah-hartman
 170  *      more error checking added to SerialOpen to try to fix UHCI open problem
 171  *
 172  * 0.9.4 (03/09/2000) greg kroah-hartman
 173  *      added more error checking to handle oops when data is hanging
 174  *      around and tty is abruptly closed.
 175  *
 176  * 0.9.3 (03/09/2000) david iacovelli
 177  *      Add epic support for xon/xoff chars
 178  *      play with performance
 179  *
 180  * 0.9.2 (03/08/2000) greg kroah-hartman
 181  *      changed most "info" calls to "dbg"
 182  *      implemented flow control properly in the termios call
 183  *
 184  * 0.9.1 (03/08/2000) david iacovelli
 185  *      added EPIC support
 186  *      enabled bootloader update
 187  *
 188  * 0.9 (03/08/2000) greg kroah-hartman
 189  *      Release to IO networks.
 190  *      Integrated changes that David made
 191  *  made getting urbs for writing SMP safe
 192  *
 193  * 0.8 (03/07/2000) greg kroah-hartman
 194  *      Release to IO networks.
 195  *      Fixed problems that were seen in code by David.
 196  *  Now both Edgeport/4 and Edgeport/2 works properly.
 197  *  Changed most of the functions to use port instead of serial.
 198  *
 199  * 0.7 (02/27/2000) greg kroah-hartman
 200  *      Milestone 3 release.
 201  *      Release to IO Networks
 202  *      ioctl for waiting on line change implemented.
 203  *      ioctl for getting statistics implemented.
 204  *      multiport support working.
 205  *      lsr and msr registers are now handled properly.
 206  *      change break now hooked up and working.
 207  *      support for all known Edgeport devices.
 208  *
 209  * 0.6 (02/22/2000) greg kroah-hartman
 210  *      Release to IO networks.
 211  *      CHASE is implemented correctly when port is closed.
 212  *      SerialOpen now blocks correctly until port is fully opened.
 213  *
 214  * 0.5 (02/20/2000) greg kroah-hartman
 215  *      Release to IO networks.
 216  *      Known problems:
 217  *              modem status register changes are not sent on to the user
 218  *              CHASE is not implemented when the port is closed.
 219  *
 220  * 0.4 (02/16/2000) greg kroah-hartman
 221  *      Second cut at the CeBit demo.
 222  *      Doesn't leak memory on every write to the port
 223  *      Still small leaks on startup.
 224  *      Added support for Edgeport/2 and Edgeport/8
 225  *
 226  * 0.3 (02/15/2000) greg kroah-hartman
 227  *      CeBit demo release.
 228  *      Force the line settings to 4800, 8, 1, e for the demo.
 229  *      Warning! This version leaks memory like crazy!
 230  *
 231  * 0.2 (01/30/2000) greg kroah-hartman
 232  *      Milestone 1 release.
 233  *      Device is found by USB subsystem, enumerated, fimware is downloaded
 234  *      and the descriptors are printed to the debug log, config is set, and
 235  *      green light starts to blink. Open port works, and data can be sent
 236  *      and received at the default settings of the UART. Loopback connector
 237  *      and debug log confirms this.
 238  *
 239  * 0.1 (01/23/2000) greg kroah-hartman
 240  *      Initial release to help IO Networks try to set up their test system.
 241  *      Edgeport4 is recognized, firmware is downloaded, config is set so
 242  *      device blinks green light every 3 sec. Port is bound, but opening,
 243  *      closing, and sending data do not work properly.
 244  *
 245  */
 246
 247 #include <linux/config.h>
 248 #include <linux/kernel.h>
 249 #include <linux/jiffies.h>
 250 #include <linux/errno.h>
 251 #include <linux/init.h>
 252 #include <linux/slab.h>
 253 #include <linux/tty.h>
 254 #include <linux/tty_driver.h>
 255 #include <linux/tty_flip.h>
 256 #include <linux/module.h>
 257 #include <linux/spinlock.h>
 258 #include <linux/serial.h>
 259 #include <linux/ioctl.h>
 260 #include <asm/uaccess.h>
 261 #include <linux/usb.h>
 262 #include "usb-serial.h"
 263 #include "io_edgeport.h"
 264 #include "io_ionsp.h"           /* info for the iosp messages */
 265 #include "io_16654.h"           /* 16654 UART defines */
 266
 267 /*
 268  * Version Information
 269  */
 270 #define DRIVER_VERSION "v2.3"
 271 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
 272 #define DRIVER_DESC "Edgeport USB Serial Driver"
 273
 274 /* First, the latest boot code - for first generation edgeports */
 275 #define IMAGE_ARRAY_NAME        BootCodeImage_GEN1
 276 #define IMAGE_VERSION_NAME      BootCodeImageVersion_GEN1
 277 #include "io_fw_boot.h"         /* the bootloader firmware to download to a device, if it needs it */
 278
 279 /* for second generation edgeports */
 280 #define IMAGE_ARRAY_NAME        BootCodeImage_GEN2
 281 #define IMAGE_VERSION_NAME      BootCodeImageVersion_GEN2
 282 #include "io_fw_boot2.h"        /* the bootloader firmware to download to a device, if it needs it */
 283
 284 /* Then finally the main run-time operational code - for first generation edgeports */
 285 #define IMAGE_ARRAY_NAME        OperationalCodeImage_GEN1
 286 #define IMAGE_VERSION_NAME      OperationalCodeImageVersion_GEN1
 287 #include "io_fw_down.h"         /* Define array OperationalCodeImage[] */
 288
 289 /* for second generation edgeports */
 290 #define IMAGE_ARRAY_NAME        OperationalCodeImage_GEN2
 291 #define IMAGE_VERSION_NAME      OperationalCodeImageVersion_GEN2
 292 #include "io_fw_down2.h"        /* Define array OperationalCodeImage[] */
 293
 294 #define MAX_NAME_LEN            64
 295
 296 #define CHASE_TIMEOUT           (5*HZ)          /* 5 seconds */
 297 #define OPEN_TIMEOUT            (5*HZ)          /* 5 seconds */
 298 #define COMMAND_TIMEOUT         (5*HZ)          /* 5 seconds */
 299
 300 static int debug;
 301
 302 /* receive port state */
 303 enum RXSTATE {
 304         EXPECT_HDR1 = 0,        /* Expect header byte 1 */
 305         EXPECT_HDR2 = 1,        /* Expect header byte 2 */
 306         EXPECT_DATA = 2,        /* Expect 'RxBytesRemaining' data */
 307         EXPECT_HDR3 = 3,        /* Expect header byte 3 (for status hdrs only) */
 308 };
 309
 310
 311 /* Transmit Fifo
 312  * This Transmit queue is an extension of the edgeport Rx buffer.
 313  * The maximum amount of data buffered in both the edgeport
 314  * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
 315  */
 316 struct TxFifo {
 317         unsigned int    head;   /* index to head pointer (write) */
 318         unsigned int    tail;   /* index to tail pointer (read)  */
 319         unsigned int    count;  /* Bytes in queue */
 320         unsigned int    size;   /* Max size of queue (equal to Max number of TxCredits) */
 321         unsigned char   *fifo;  /* allocated Buffer */
 322 };
 323
 324 /* This structure holds all of the local port information */
 325 struct edgeport_port {
 326         __u16                   txCredits;              /* our current credits for this port */
 327         __u16                   maxTxCredits;           /* the max size of the port */
 328
 329         struct TxFifo           txfifo;                 /* transmit fifo -- size will be maxTxCredits */
 330         struct urb              *write_urb;             /* write URB for this port */
 331         char                    write_in_progress;      /* TRUE while a write URB is outstanding */
 332
 333         __u8                    shadowLCR;              /* last LCR value received */
 334         __u8                    shadowMCR;              /* last MCR value received */
 335         __u8                    shadowMSR;              /* last MSR value received */
 336         __u8                    shadowLSR;              /* last LSR value received */
 337         __u8                    shadowXonChar;          /* last value set as XON char in Edgeport */
 338         __u8                    shadowXoffChar;         /* last value set as XOFF char in Edgeport */
 339         __u8                    validDataMask;
 340         __u32                   baudRate;
 341
 342         char                    open;
 343         char                    openPending;
 344         char                    commandPending;
 345         char                    closePending;
 346         char                    chaseResponsePending;
 347
 348         wait_queue_head_t       wait_chase;             /* for handling sleeping while waiting for chase to finish */
 349         wait_queue_head_t       wait_open;              /* for handling sleeping while waiting for open to finish */
 350         wait_queue_head_t       wait_command;           /* for handling sleeping while waiting for command to finish */
 351         wait_queue_head_t       delta_msr_wait;         /* for handling sleeping while waiting for msr change to happen */
 352
 353         struct async_icount     icount;
 354         struct usb_serial_port  *port;                  /* loop back to the owner of this object */
 355 };
 356
 357
 358 /* This structure holds all of the individual device information */
 359 struct edgeport_serial {
 360         char                    name[MAX_NAME_LEN+1];           /* string name of this device */
 361
 362         struct edge_manuf_descriptor    manuf_descriptor;       /* the manufacturer descriptor */
 363         struct edge_boot_descriptor     boot_descriptor;        /* the boot firmware descriptor */
 364         struct edgeport_product_info    product_info;           /* Product Info */
 365
 366         __u8                    interrupt_in_endpoint;          /* the interrupt endpoint handle */
 367         unsigned char *         interrupt_in_buffer;            /* the buffer we use for the interrupt endpoint */
 368         struct urb *            interrupt_read_urb;             /* our interrupt urb */
 369
 370         __u8                    bulk_in_endpoint;               /* the bulk in endpoint handle */
 371         unsigned char *         bulk_in_buffer;                 /* the buffer we use for the bulk in endpoint */
 372         struct urb *            read_urb;                       /* our bulk read urb */
 373
 374         __u8                    bulk_out_endpoint;              /* the bulk out endpoint handle */
 375
 376         __s16                   rxBytesAvail;                   /* the number of bytes that we need to read from this device */
 377
 378         enum RXSTATE            rxState;                        /* the current state of the bulk receive processor */
 379         __u8                    rxHeader1;                      /* receive header byte 1 */
 380         __u8                    rxHeader2;                      /* receive header byte 2 */
 381         __u8                    rxHeader3;                      /* receive header byte 3 */
 382         __u8                    rxPort;                         /* the port that we are currently receiving data for */
 383         __u8                    rxStatusCode;                   /* the receive status code */
 384         __u8                    rxStatusParam;                  /* the receive status paramater */
 385         __s16                   rxBytesRemaining;               /* the number of port bytes left to read */
 386         struct usb_serial       *serial;                        /* loop back to the owner of this object */
 387 };
 388
 389 /* baud rate information */
 390 struct divisor_table_entry {
 391         __u32   BaudRate;
 392         __u16  Divisor;
 393 };
 394
 395 //
 396 // Define table of divisors for Rev A EdgePort/4 hardware
 397 // These assume a 3.6864MHz crystal, the standard /16, and
 398 // MCR.7 = 0.
 399 //
 400 static struct divisor_table_entry divisor_table[] = {
 401         {   50,         4608},
 402         {   75,         3072},
 403         {   110,        2095},          /* 2094.545455 => 230450   => .0217 % over */
 404         {   134,        1713},          /* 1713.011152 => 230398.5 => .00065% under */
 405         {   150,        1536},
 406         {   300,        768},
 407         {   600,        384},
 408         {   1200,       192},
 409         {   1800,       128},
 410         {   2400,       96},
 411         {   4800,       48},
 412         {   7200,       32},
 413         {   9600,       24},
 414         {   14400,      16},
 415         {   19200,      12},
 416         {   38400,      6},
 417         {   57600,      4},
 418         {   115200,     2},
 419         {   230400,     1},
 420 };
 421
 422 /* local variables */
 423 static int      CmdUrbs = 0;                                                    /* Number of outstanding Command Write Urbs */
 424
 425
 426 /* local function prototypes */
 427
 428 /* function prototypes for all URB callbacks */
 429 static void edge_interrupt_callback     (struct urb *urb, struct pt_regs *regs);
 430 static void edge_bulk_in_callback       (struct urb *urb, struct pt_regs *regs);
 431 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs);
 432 static void edge_bulk_out_cmd_callback  (struct urb *urb, struct pt_regs *regs);
 433
 434 /* function prototypes for the usbserial callbacks */
 435 static int  edge_open                   (struct usb_serial_port *port, struct file *filp);
 436 static void edge_close                  (struct usb_serial_port *port, struct file *filp);
 437 static int  edge_write                  (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
 438 static int  edge_write_room             (struct usb_serial_port *port);
 439 static int  edge_chars_in_buffer        (struct usb_serial_port *port);
 440 static void edge_throttle               (struct usb_serial_port *port);
 441 static void edge_unthrottle             (struct usb_serial_port *port);
 442 static void edge_set_termios            (struct usb_serial_port *port, struct termios *old_termios);
 443 static int  edge_ioctl                  (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
 444 static void edge_break                  (struct usb_serial_port *port, int break_state);
 445 static int  edge_tiocmget               (struct usb_serial_port *port, struct file *file);
 446 static int  edge_tiocmset               (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
 447 static int  edge_startup                (struct usb_serial *serial);
 448 static void edge_shutdown               (struct usb_serial *serial);
 449
 450
 451 #include "io_tables.h"  /* all of the devices that this driver supports */
 452
 453 static struct usb_driver io_driver = {
 454         .owner =        THIS_MODULE,
 455         .name =         "io_edgeport",
 456         .probe =        usb_serial_probe,
 457         .disconnect =   usb_serial_disconnect,
 458         .id_table =     id_table_combined,
 459 };
 460
 461 /* function prototypes for all of our local functions */
 462 static int  process_rcvd_data           (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
 463 static void process_rcvd_status         (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
 464 static void handle_new_msr              (struct edgeport_port *edge_port, __u8 newMsr);
 465 static void handle_new_lsr              (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
 466 static int  send_iosp_ext_cmd           (struct edgeport_port *edge_port, __u8 command, __u8 param);
 467 static int  calc_baud_rate_divisor      (int baud_rate, int *divisor);
 468 static int  send_cmd_write_baud_rate    (struct edgeport_port *edge_port, int baudRate);
 469 static void change_port_settings        (struct edgeport_port *edge_port, struct termios *old_termios);
 470 static int  send_cmd_write_uart_register        (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
 471 static int  write_cmd_usb               (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
 472 static void send_more_port_data         (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
 473
 474 static int  sram_write                  (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 475 static int  rom_read                    (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 476 static int  rom_write                   (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 477 static void get_manufacturing_desc      (struct edgeport_serial *edge_serial);
 478 static void get_boot_desc               (struct edgeport_serial *edge_serial);
 479 static void load_application_firmware   (struct edgeport_serial *edge_serial);
 480
 481
 482 static void unicode_to_ascii            (char *string, __le16 *unicode, int unicode_size);
 483
 484
 485
 486
 487
 488 // ************************************************************************
 489 // ************************************************************************
 490 // ************************************************************************
 491 // ************************************************************************
 492
 493 /************************************************************************
 494  *                                                                      *
 495  * update_edgeport_E2PROM()     Compare current versions of             *
 496  *                              Boot ROM and Manufacture                *
 497  *                              Descriptors with versions               *
 498  *                              embedded in this driver                 *
 499  *                                                                      *
 500  ************************************************************************/
 501 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
 502 {
 503         __u32 BootCurVer;
 504         __u32 BootNewVer;
 505         __u8 BootMajorVersion;
 506         __u8 BootMinorVersion;
 507         __le16 BootBuildNumber;
 508         __u8 *BootImage;
 509         __u32 BootSize;
 510         struct edge_firmware_image_record *record;
 511         unsigned char *firmware;
 512         int response;
 513
 514
 515         switch (edge_serial->product_info.iDownloadFile) {
 516                 case EDGE_DOWNLOAD_FILE_I930:
 517                         BootMajorVersion        = BootCodeImageVersion_GEN1.MajorVersion;
 518                         BootMinorVersion        = BootCodeImageVersion_GEN1.MinorVersion;
 519                         BootBuildNumber         = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
 520                         BootImage               = &BootCodeImage_GEN1[0];
 521                         BootSize                = sizeof( BootCodeImage_GEN1 );
 522                         break;
 523
 524                 case EDGE_DOWNLOAD_FILE_80251:
 525                         BootMajorVersion        = BootCodeImageVersion_GEN2.MajorVersion;
 526                         BootMinorVersion        = BootCodeImageVersion_GEN2.MinorVersion;
 527                         BootBuildNumber         = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
 528                         BootImage               = &BootCodeImage_GEN2[0];
 529                         BootSize                = sizeof( BootCodeImage_GEN2 );
 530                         break;
 531
 532                 default:
 533                         return;
 534         }
 535
 536         // Check Boot Image Version
 537         BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
 538                      (edge_serial->boot_descriptor.MinorVersion << 16) +
 539                       le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
 540
 541         BootNewVer = (BootMajorVersion << 24) +
 542                      (BootMinorVersion << 16) +
 543                       le16_to_cpu(BootBuildNumber);
 544
 545         dbg("Current Boot Image version %d.%d.%d",
 546             edge_serial->boot_descriptor.MajorVersion,
 547             edge_serial->boot_descriptor.MinorVersion,
 548             le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
 549
 550
 551         if (BootNewVer > BootCurVer) {
 552                 dbg("**Update Boot Image from %d.%d.%d to %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                     BootMajorVersion,
 557                     BootMinorVersion,
 558                     le16_to_cpu(BootBuildNumber));
 559
 560
 561                 dbg("Downloading new Boot Image");
 562
 563                 firmware = BootImage;
 564
 565                 for (;;) {
 566                         record = (struct edge_firmware_image_record *)firmware;
 567                         response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
 568                         if (response < 0) {
 569                                 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));
 570                                 break;
 571                         }
 572                         firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
 573                         if (firmware >= &BootImage[BootSize]) {
 574                                 break;
 575                         }
 576                 }
 577         } else {
 578                 dbg("Boot Image -- already up to date");
 579         }
 580 }
 581
 582
 583 /************************************************************************
 584  *                                                                      *
 585  *  Get string descriptor from device                                   *
 586  *                                                                      *
 587  ************************************************************************/
 588 static int get_string (struct usb_device *dev, int Id, char *string)
 589 {
 590         struct usb_string_descriptor StringDesc;
 591         struct usb_string_descriptor *pStringDesc;
 592
 593         dbg("%s - USB String ID = %d", __FUNCTION__, Id );
 594
 595         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
 596                 return 0;
 597         }
 598
 599         pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
 600
 601         if (!pStringDesc) {
 602                 return 0;
 603         }
 604
 605         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
 606                 kfree(pStringDesc);
 607                 return 0;
 608         }
 609
 610         unicode_to_ascii(string,  pStringDesc->wData,     pStringDesc->bLength/2-1);
 611
 612         kfree(pStringDesc);
 613         return strlen(string);
 614 }
 615
 616
 617 #if 0
 618 /************************************************************************
 619  *
 620  *  Get string descriptor from device
 621  *
 622  ************************************************************************/
 623 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
 624 {
 625         struct usb_string_descriptor StringDesc;
 626         struct usb_string_descriptor *pStringDesc;
 627
 628         dbg("%s - USB String ID = %d", __FUNCTION__, Id );
 629
 630         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
 631                 return 0;
 632         }
 633
 634         pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
 635
 636         if (!pStringDesc) {
 637                 return -1;
 638         }
 639
 640         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
 641                 kfree(pStringDesc);
 642                 return -1;
 643         }
 644
 645         *pRetDesc = pStringDesc;
 646         return 0;
 647 }
 648 #endif
 649
 650 static void get_product_info(struct edgeport_serial *edge_serial)
 651 {
 652         struct edgeport_product_info *product_info = &edge_serial->product_info;
 653
 654         memset (product_info, 0, sizeof(struct edgeport_product_info));
 655
 656         product_info->ProductId         = (__u16)(edge_serial->serial->dev->descriptor.idProduct & ~ION_DEVICE_ID_80251_NETCHIP);
 657         product_info->NumPorts          = edge_serial->manuf_descriptor.NumPorts;
 658         product_info->ProdInfoVer       = 0;
 659
 660         product_info->RomSize           = edge_serial->manuf_descriptor.RomSize;
 661         product_info->RamSize           = edge_serial->manuf_descriptor.RamSize;
 662         product_info->CpuRev            = edge_serial->manuf_descriptor.CpuRev;
 663         product_info->BoardRev          = edge_serial->manuf_descriptor.BoardRev;
 664
 665         product_info->BootMajorVersion  = edge_serial->boot_descriptor.MajorVersion;
 666         product_info->BootMinorVersion  = edge_serial->boot_descriptor.MinorVersion;
 667         product_info->BootBuildNumber   = edge_serial->boot_descriptor.BuildNumber;
 668
 669         memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
 670
 671         // check if this is 2nd generation hardware
 672         if (edge_serial->serial->dev->descriptor.idProduct & ION_DEVICE_ID_80251_NETCHIP) {
 673                 product_info->FirmwareMajorVersion      = OperationalCodeImageVersion_GEN2.MajorVersion;
 674                 product_info->FirmwareMinorVersion      = OperationalCodeImageVersion_GEN2.MinorVersion;
 675                 product_info->FirmwareBuildNumber       = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
 676                 product_info->iDownloadFile             = EDGE_DOWNLOAD_FILE_80251;
 677         } else {
 678                 product_info->FirmwareMajorVersion      = OperationalCodeImageVersion_GEN1.MajorVersion;
 679                 product_info->FirmwareMinorVersion      = OperationalCodeImageVersion_GEN1.MinorVersion;
 680                 product_info->FirmwareBuildNumber       = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
 681                 product_info->iDownloadFile             = EDGE_DOWNLOAD_FILE_I930;
 682         }
 683
 684         // Determine Product type and set appropriate flags
 685         switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
 686                 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
 687                 case ION_DEVICE_ID_EDGEPORT_4T:
 688                 case ION_DEVICE_ID_EDGEPORT_4:
 689                 case ION_DEVICE_ID_EDGEPORT_2:
 690                 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
 691                 case ION_DEVICE_ID_EDGEPORT_8:
 692                 case ION_DEVICE_ID_EDGEPORT_421:
 693                 case ION_DEVICE_ID_EDGEPORT_21:
 694                 case ION_DEVICE_ID_EDGEPORT_2_DIN:
 695                 case ION_DEVICE_ID_EDGEPORT_4_DIN:
 696                 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
 697                         product_info->IsRS232 = 1;
 698                         break;
 699
 700                 case ION_DEVICE_ID_EDGEPORT_2I:                            // Edgeport/2 RS422/RS485
 701                         product_info->IsRS422 = 1;
 702                         product_info->IsRS485 = 1;
 703                         break;
 704
 705                 case ION_DEVICE_ID_EDGEPORT_8I:                            // Edgeport/4 RS422
 706                 case ION_DEVICE_ID_EDGEPORT_4I:                            // Edgeport/4 RS422
 707                         product_info->IsRS422 = 1;
 708                         break;
 709         }
 710
 711         // Dump Product Info structure
 712         dbg("**Product Information:");
 713         dbg("  ProductId             %x", product_info->ProductId );
 714         dbg("  NumPorts              %d", product_info->NumPorts );
 715         dbg("  ProdInfoVer           %d", product_info->ProdInfoVer );
 716         dbg("  IsServer              %d", product_info->IsServer);
 717         dbg("  IsRS232               %d", product_info->IsRS232 );
 718         dbg("  IsRS422               %d", product_info->IsRS422 );
 719         dbg("  IsRS485               %d", product_info->IsRS485 );
 720         dbg("  RomSize               %d", product_info->RomSize );
 721         dbg("  RamSize               %d", product_info->RamSize );
 722         dbg("  CpuRev                %x", product_info->CpuRev  );
 723         dbg("  BoardRev              %x", product_info->BoardRev);
 724         dbg("  BootMajorVersion      %d.%d.%d", product_info->BootMajorVersion,
 725             product_info->BootMinorVersion,
 726             le16_to_cpu(product_info->BootBuildNumber));
 727         dbg("  FirmwareMajorVersion  %d.%d.%d", product_info->FirmwareMajorVersion,
 728             product_info->FirmwareMinorVersion,
 729             le16_to_cpu(product_info->FirmwareBuildNumber));
 730         dbg("  ManufactureDescDate   %d/%d/%d", product_info->ManufactureDescDate[0],
 731             product_info->ManufactureDescDate[1],
 732             product_info->ManufactureDescDate[2]+1900);
 733         dbg("  iDownloadFile         0x%x",     product_info->iDownloadFile);
 734
 735 }
 736
 737
 738 /************************************************************************/
 739 /************************************************************************/
 740 /*            U S B  C A L L B A C K   F U N C T I O N S                */
 741 /*            U S B  C A L L B A C K   F U N C T I O N S                */
 742 /************************************************************************/
 743 /************************************************************************/
 744
 745 /*****************************************************************************
 746  * edge_interrupt_callback
 747  *      this is the callback function for when we have received data on the
 748  *      interrupt endpoint.
 749  *****************************************************************************/
 750 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
 751 {
 752         struct edgeport_serial  *edge_serial = (struct edgeport_serial *)urb->context;
 753         struct edgeport_port *edge_port;
 754         struct usb_serial_port *port;
 755         unsigned char *data = urb->transfer_buffer;
 756         int length = urb->actual_length;
 757         int bytes_avail;
 758         int position;
 759         int txCredits;
 760         int portNumber;
 761         int result;
 762
 763         dbg("%s", __FUNCTION__);
 764
 765         switch (urb->status) {
 766         case 0:
 767                 /* success */
 768                 break;
 769         case -ECONNRESET:
 770         case -ENOENT:
 771         case -ESHUTDOWN:
 772                 /* this urb is terminated, clean up */
 773                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 774                 return;
 775         default:
 776                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 777                 goto exit;
 778         }
 779
 780         // process this interrupt-read even if there are no ports open
 781         if (length) {
 782                 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
 783
 784                 if (length > 1) {
 785                         bytes_avail = data[0] | (data[1] << 8);
 786                         if (bytes_avail) {
 787                                 edge_serial->rxBytesAvail += bytes_avail;
 788                                 dbg("%s - bytes_avail = %d, rxBytesAvail %d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail);
 789
 790                                 if ((edge_serial->rxBytesAvail > 0) &&
 791                                     (edge_serial->read_urb->status != -EINPROGRESS)) {
 792                                         dbg(" --- Posting a read");
 793
 794                                         /* we have pending bytes on the bulk in pipe, send a request */
 795                                         edge_serial->read_urb->dev = edge_serial->serial->dev;
 796                                         result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
 797                                         if (result) {
 798                                                 dbg("%s - usb_submit_urb(read bulk) failed with result = %d", __FUNCTION__, result);
 799                                         }
 800                                 }
 801                         }
 802                 }
 803                 /* grab the txcredits for the ports if available */
 804                 position = 2;
 805                 portNumber = 0;
 806                 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
 807                         txCredits = data[position] | (data[position+1] << 8);
 808                         if (txCredits) {
 809                                 port = edge_serial->serial->port[portNumber];
 810                                 edge_port = usb_get_serial_port_data(port);
 811                                 if (edge_port->open) {
 812                                         edge_port->txCredits += txCredits;
 813                                         dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
 814
 815                                         /* tell the tty driver that something has changed */
 816                                         if (edge_port->port->tty)
 817                                                 wake_up_interruptible(&edge_port->port->tty->write_wait);
 818
 819                                         // Since we have more credit, check if more data can be sent
 820                                         send_more_port_data(edge_serial, edge_port);
 821                                 }
 822                         }
 823                         position += 2;
 824                         ++portNumber;
 825                 }
 826         }
 827
 828 exit:
 829         result = usb_submit_urb (urb, GFP_ATOMIC);
 830         if (result) {
 831                 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
 832         }
 833 }
 834
 835
 836 /*****************************************************************************
 837  * edge_bulk_in_callback
 838  *      this is the callback function for when we have received data on the
 839  *      bulk in endpoint.
 840  *****************************************************************************/
 841 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
 842 {
 843         struct edgeport_serial  *edge_serial = (struct edgeport_serial *)urb->context;
 844         unsigned char           *data = urb->transfer_buffer;
 845         int                     status;
 846         __u16                   raw_data_length;
 847
 848         dbg("%s", __FUNCTION__);
 849
 850         if (urb->status) {
 851                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 852                 return;
 853         }
 854
 855         if (urb->actual_length) {
 856                 raw_data_length = urb->actual_length;
 857
 858                 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data);
 859
 860                 /* decrement our rxBytes available by the number that we just got */
 861                 edge_serial->rxBytesAvail -= raw_data_length;
 862
 863                 dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
 864
 865                 process_rcvd_data (edge_serial, data, urb->actual_length);
 866
 867                 /* check to see if there's any more data for us to read */
 868                 if ((edge_serial->rxBytesAvail > 0) &&
 869                     (edge_serial->read_urb->status != -EINPROGRESS)) {
 870                         dbg(" --- Posting a read");
 871
 872                         /* there is, so resubmit our urb */
 873                         edge_serial->read_urb->dev = edge_serial->serial->dev;
 874                         status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
 875                         if (status) {
 876                                 dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
 877                         }
 878                 }
 879         }
 880 }
 881
 882
 883 /*****************************************************************************
 884  * edge_bulk_out_data_callback
 885  *      this is the callback function for when we have finished sending serial data
 886  *      on the bulk out endpoint.
 887  *****************************************************************************/
 888 static void edge_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs)
 889 {
 890         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
 891         struct tty_struct *tty;
 892
 893         dbg("%s", __FUNCTION__);
 894
 895         if (urb->status) {
 896                 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 897         }
 898
 899         tty = edge_port->port->tty;
 900
 901         if (tty && edge_port->open) {
 902                 /* let the tty driver wakeup if it has a special write_wakeup function */
 903                 tty_wakeup(tty);
 904         }
 905
 906         // Release the Write URB
 907         edge_port->write_in_progress = FALSE;
 908
 909         // Check if more data needs to be sent
 910         send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
 911 }
 912
 913
 914 /*****************************************************************************
 915  * BulkOutCmdCallback
 916  *      this is the callback function for when we have finished sending a command
 917  *      on the bulk out endpoint.
 918  *****************************************************************************/
 919 static void edge_bulk_out_cmd_callback (struct urb *urb, struct pt_regs *regs)
 920 {
 921         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
 922         struct tty_struct *tty;
 923         int status = urb->status;
 924
 925         dbg("%s", __FUNCTION__);
 926
 927         CmdUrbs--;
 928         dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
 929
 930
 931         /* clean up the transfer buffer */
 932         if (urb->transfer_buffer != NULL) {
 933                 kfree(urb->transfer_buffer);
 934         }
 935
 936         /* Free the command urb */
 937         usb_free_urb (urb);
 938
 939         if (status) {
 940                 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
 941                 return;
 942         }
 943
 944         /* Get pointer to tty */
 945         tty = edge_port->port->tty;
 946
 947         /* tell the tty driver that something has changed */
 948         if (tty && edge_port->open)
 949                 wake_up_interruptible(&tty->write_wait);
 950
 951         /* we have completed the command */
 952         edge_port->commandPending = FALSE;
 953         wake_up_interruptible(&edge_port->wait_command);
 954 }
 955
 956
 957 /*****************************************************************************
 958  * Driver tty interface functions
 959  *****************************************************************************/
 960
 961 /*****************************************************************************
 962  * SerialOpen
 963  *      this function is called by the tty driver when a port is opened
 964  *      If successful, we return 0
 965  *      Otherwise we return a negative error number.
 966  *****************************************************************************/
 967 static int edge_open (struct usb_serial_port *port, struct file * filp)
 968 {
 969         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 970         struct usb_serial *serial;
 971         struct edgeport_serial *edge_serial;
 972         int response;
 973         int timeout;
 974
 975         dbg("%s - port %d", __FUNCTION__, port->number);
 976
 977         if (edge_port == NULL)
 978                 return -ENODEV;
 979
 980         /* force low_latency on so that our tty_push actually forces the data through,
 981            otherwise it is scheduled, and with high data rates (like with OHCI) data
 982            can get lost. */
 983         if (port->tty)
 984                 port->tty->low_latency = 1;
 985
 986         /* see if we've set up our endpoint info yet (can't set it up in edge_startup
 987            as the structures were not set up at that time.) */
 988         serial = port->serial;
 989         edge_serial = usb_get_serial_data(serial);
 990         if (edge_serial == NULL) {
 991                 return -ENODEV;
 992         }
 993         if (edge_serial->interrupt_in_buffer == NULL) {
 994                 struct usb_serial_port *port0 = serial->port[0];
 995
 996                 /* not set up yet, so do it now */
 997                 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
 998                 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
 999                 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
1000                 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
1001                 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
1002                 edge_serial->read_urb = port0->read_urb;
1003                 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
1004
1005                 /* set up our interrupt urb */
1006                 usb_fill_int_urb(edge_serial->interrupt_read_urb,
1007                                  serial->dev,
1008                                  usb_rcvintpipe(serial->dev,
1009                                                 port0->interrupt_in_endpointAddress),
1010                                  port0->interrupt_in_buffer,
1011                                  edge_serial->interrupt_read_urb->transfer_buffer_length,
1012                                  edge_interrupt_callback, edge_serial,
1013                                  edge_serial->interrupt_read_urb->interval);
1014
1015                 /* set up our bulk in urb */
1016                 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
1017                                   usb_rcvbulkpipe(serial->dev,
1018                                                   port0->bulk_in_endpointAddress),
1019                                   port0->bulk_in_buffer,
1020                                   edge_serial->read_urb->transfer_buffer_length,
1021                                   edge_bulk_in_callback, edge_serial);
1022
1023                 /* start interrupt read for this edgeport
1024                  * this interrupt will continue as long as the edgeport is connected */
1025                 response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL);
1026                 if (response) {
1027                         dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response);
1028                 }
1029         }
1030
1031         /* initialize our wait queues */
1032         init_waitqueue_head(&edge_port->wait_open);
1033         init_waitqueue_head(&edge_port->wait_chase);
1034         init_waitqueue_head(&edge_port->delta_msr_wait);
1035         init_waitqueue_head(&edge_port->wait_command);
1036
1037         /* initialize our icount structure */
1038         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1039
1040         /* initialize our port settings */
1041         edge_port->txCredits            = 0;                    /* Can't send any data yet */
1042         edge_port->shadowMCR            = MCR_MASTER_IE;        /* Must always set this bit to enable ints! */
1043         edge_port->chaseResponsePending = FALSE;
1044
1045         /* send a open port command */
1046         edge_port->openPending = TRUE;
1047         edge_port->open        = FALSE;
1048         response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
1049
1050         if (response < 0) {
1051                 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
1052                 edge_port->openPending = FALSE;
1053                 return -ENODEV;
1054         }
1055
1056         /* now wait for the port to be completely opened */
1057         timeout = OPEN_TIMEOUT;
1058         while (timeout && edge_port->openPending == TRUE) {
1059                 timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);
1060         }
1061
1062         if (edge_port->open == FALSE) {
1063                 /* open timed out */
1064                 dbg("%s - open timedout", __FUNCTION__);
1065                 edge_port->openPending = FALSE;
1066                 return -ENODEV;
1067         }
1068
1069         /* create the txfifo */
1070         edge_port->txfifo.head  = 0;
1071         edge_port->txfifo.tail  = 0;
1072         edge_port->txfifo.count = 0;
1073         edge_port->txfifo.size  = edge_port->maxTxCredits;
1074         edge_port->txfifo.fifo  = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
1075
1076         if (!edge_port->txfifo.fifo) {
1077                 dbg("%s - no memory", __FUNCTION__);
1078                 edge_close (port, filp);
1079                 return -ENOMEM;
1080         }
1081
1082         /* Allocate a URB for the write */
1083         edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
1084
1085         if (!edge_port->write_urb) {
1086                 dbg("%s - no memory", __FUNCTION__);
1087                 edge_close (port, filp);
1088                 return -ENOMEM;
1089         }
1090
1091         dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
1092
1093         dbg("%s exited", __FUNCTION__);
1094
1095         return 0;
1096 }
1097
1098
1099 /************************************************************************
1100  *
1101  * block_until_chase_response
1102  *
1103  *      This function will block the close until one of the following:
1104  *              1. Response to our Chase comes from Edgeport
1105  *              2. A timout of 10 seconds without activity has expired
1106  *                 (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
1107  *
1108  ************************************************************************/
1109 static void block_until_chase_response(struct edgeport_port *edge_port)
1110 {
1111         __u16 lastCredits;
1112         int timeout = 1*HZ;
1113         int wait = 10;
1114
1115         while (1) {
1116                 // Save Last credits
1117                 lastCredits = edge_port->txCredits;
1118
1119                 // Did we get our Chase response
1120                 if (edge_port->chaseResponsePending == FALSE) {
1121                         dbg("%s - Got Chase Response", __FUNCTION__);
1122
1123                         // did we get all of our credit back?
1124                         if (edge_port->txCredits == edge_port->maxTxCredits ) {
1125                                 dbg("%s - Got all credits", __FUNCTION__);
1126                                 return;
1127                         }
1128                 }
1129
1130                 // Block the thread for a while
1131                 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1132
1133                 if (lastCredits == edge_port->txCredits) {
1134                         // No activity.. count down.
1135                         wait--;
1136                         if (wait == 0) {
1137                                 edge_port->chaseResponsePending = FALSE;
1138                                 dbg("%s - Chase TIMEOUT", __FUNCTION__);
1139                                 return;
1140                         }
1141                 } else {
1142                         // Reset timout value back to 10 seconds
1143                         dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1144                         wait = 10;
1145                 }
1146         }
1147 }
1148
1149
1150 /************************************************************************
1151  *
1152  * block_until_tx_empty
1153  *
1154  *      This function will block the close until one of the following:
1155  *              1. TX count are 0
1156  *              2. The edgeport has stopped
1157  *              3. A timout of 3 seconds without activity has expired
1158  *
1159  ************************************************************************/
1160 static void block_until_tx_empty (struct edgeport_port *edge_port)
1161 {
1162         struct TxFifo *fifo = &edge_port->txfifo;
1163         __u32 lastCount;
1164         int timeout = HZ/10;
1165         int wait = 30;
1166
1167         while (1) {
1168                 // Save Last count
1169                 lastCount = fifo->count;
1170
1171                 // Is the Edgeport Buffer empty?
1172                 if (lastCount == 0) {
1173                         dbg("%s - TX Buffer Empty", __FUNCTION__);
1174                         return;
1175                 }
1176
1177                 // Block the thread for a while
1178                 interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);
1179
1180                 dbg("%s wait", __FUNCTION__);
1181
1182                 if (lastCount == fifo->count) {
1183                         // No activity.. count down.
1184                         wait--;
1185                         if (wait == 0) {
1186                                 dbg("%s - TIMEOUT", __FUNCTION__);
1187                                 return;
1188                         }
1189                 } else {
1190                         // Reset timout value back to seconds
1191                         wait = 30;
1192                 }
1193         }
1194 }
1195
1196
1197 /*****************************************************************************
1198  * edge_close
1199  *      this function is called by the tty driver when a port is closed
1200  *****************************************************************************/
1201 static void edge_close (struct usb_serial_port *port, struct file * filp)
1202 {
1203         struct edgeport_serial *edge_serial;
1204         struct edgeport_port *edge_port;
1205         int status;
1206
1207         dbg("%s - port %d", __FUNCTION__, port->number);
1208
1209         edge_serial = usb_get_serial_data(port->serial);
1210         edge_port = usb_get_serial_port_data(port);
1211         if ((edge_serial == NULL) || (edge_port == NULL))
1212                 return;
1213
1214         // block until tx is empty
1215         block_until_tx_empty(edge_port);
1216
1217         edge_port->closePending = TRUE;
1218
1219         /* flush and chase */
1220         edge_port->chaseResponsePending = TRUE;
1221
1222         dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1223         status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1224         if (status == 0) {
1225                 // block until chase finished
1226                 block_until_chase_response(edge_port);
1227         } else {
1228                 edge_port->chaseResponsePending = FALSE;
1229         }
1230
1231         /* close the port */
1232         dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1233         send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1234
1235         //port->close = TRUE;
1236         edge_port->closePending = FALSE;
1237         edge_port->open = FALSE;
1238         edge_port->openPending = FALSE;
1239
1240         if (edge_port->write_urb) {
1241                 usb_unlink_urb (edge_port->write_urb);
1242         }
1243
1244         if (edge_port->write_urb) {
1245                 /* if this urb had a transfer buffer already (old transfer) free it */
1246                 if (edge_port->write_urb->transfer_buffer != NULL) {
1247                         kfree(edge_port->write_urb->transfer_buffer);
1248                 }
1249                 usb_free_urb   (edge_port->write_urb);
1250         }
1251         if (edge_port->txfifo.fifo) {
1252                 kfree(edge_port->txfifo.fifo);
1253         }
1254
1255         dbg("%s exited", __FUNCTION__);
1256 }
1257
1258 /*****************************************************************************
1259  * SerialWrite
1260  *      this function is called by the tty driver when data should be written to
1261  *      the port.
1262  *      If successful, we return the number of bytes written, otherwise we return
1263  *      a negative error number.
1264  *****************************************************************************/
1265 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
1266 {
1267         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1268         struct TxFifo *fifo;
1269         int copySize;
1270         int bytesleft;
1271         int firsthalf;
1272         int secondhalf;
1273
1274         dbg("%s - port %d", __FUNCTION__, port->number);
1275
1276         if (edge_port == NULL)
1277                 return -ENODEV;
1278
1279         // get a pointer to the Tx fifo
1280         fifo = &edge_port->txfifo;
1281
1282         // calculate number of bytes to put in fifo
1283         copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1284
1285         dbg("%s(%d) of %d byte(s) Fifo room  %d -- will copy %d bytes", __FUNCTION__,
1286             port->number, count, edge_port->txCredits - fifo->count, copySize);
1287
1288         /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1289         if (copySize == 0) {
1290                 dbg("%s - copySize = Zero", __FUNCTION__);
1291                 return 0;
1292         }
1293
1294         // queue the data
1295         // since we can never overflow the buffer we do not have to check for full condition
1296
1297         // the copy is done is two parts -- first fill to the end of the buffer
1298         // then copy the reset from the start of the buffer
1299
1300         bytesleft = fifo->size - fifo->head;
1301         firsthalf = min (bytesleft, copySize);
1302         dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1303
1304         /* now copy our data */
1305         if (from_user) {
1306                 if (copy_from_user(&fifo->fifo[fifo->head], data, firsthalf))
1307                         return -EFAULT;
1308         } else {
1309                 memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1310         }
1311         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
1312
1313         // update the index and size
1314         fifo->head  += firsthalf;
1315         fifo->count += firsthalf;
1316
1317         // wrap the index
1318         if (fifo->head == fifo->size) {
1319                 fifo->head = 0;
1320         }
1321
1322         secondhalf = copySize-firsthalf;
1323
1324         if (secondhalf) {
1325                 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1326                 if (from_user) {
1327                         if (copy_from_user(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf))
1328                                 return -EFAULT;
1329                 } else {
1330                         memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1331                 }
1332                 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
1333                 // update the index and size
1334                 fifo->count += secondhalf;
1335                 fifo->head  += secondhalf;
1336                 // No need to check for wrap since we can not get to end of fifo in this part
1337         }
1338
1339         send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
1340
1341         dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1342
1343         return copySize;
1344 }
1345
1346
1347 /************************************************************************
1348  *
1349  * send_more_port_data()
1350  *
1351  *      This routine attempts to write additional UART transmit data
1352  *      to a port over the USB bulk pipe. It is called (1) when new
1353  *      data has been written to a port's TxBuffer from higher layers
1354  *      (2) when the peripheral sends us additional TxCredits indicating
1355  *      that it can accept more Tx data for a given port; and (3) when
1356  *      a bulk write completes successfully and we want to see if we
1357  *      can transmit more.
1358  *
1359  ************************************************************************/
1360 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1361 {
1362         struct TxFifo   *fifo = &edge_port->txfifo;
1363         struct urb      *urb;
1364         unsigned char   *buffer;
1365         int             status;
1366         int             count;
1367         int             bytesleft;
1368         int             firsthalf;
1369         int             secondhalf;
1370
1371         dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1372
1373         if (edge_port->write_in_progress ||
1374             !edge_port->open             ||
1375             (fifo->count == 0)) {
1376                 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1377                 return;
1378         }
1379
1380         // since the amount of data in the fifo will always fit into the
1381         // edgeport buffer we do not need to check the write length
1382
1383         //      Do we have enough credits for this port to make it worthwhile
1384         //      to bother queueing a write. If it's too small, say a few bytes,
1385         //      it's better to wait for more credits so we can do a larger
1386         //      write.
1387         if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1388                 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1389                 return;
1390         }
1391
1392         // lock this write
1393         edge_port->write_in_progress = TRUE;
1394
1395         // get a pointer to the write_urb
1396         urb = edge_port->write_urb;
1397
1398         /* if this urb had a transfer buffer already (old transfer) free it */
1399         if (urb->transfer_buffer != NULL) {
1400                 kfree(urb->transfer_buffer);
1401                 urb->transfer_buffer = NULL;
1402         }
1403
1404         /* build the data header for the buffer and port that we are about to send out */
1405         count = fifo->count;
1406         buffer = kmalloc (count+2, GFP_ATOMIC);
1407         if (buffer == NULL) {
1408                 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
1409                 edge_port->write_in_progress = FALSE;
1410                 return;
1411         }
1412         buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1413         buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1414
1415         /* now copy our data */
1416         bytesleft =  fifo->size - fifo->tail;
1417         firsthalf = min (bytesleft, count);
1418         memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1419         fifo->tail  += firsthalf;
1420         fifo->count -= firsthalf;
1421         if (fifo->tail == fifo->size) {
1422                 fifo->tail = 0;
1423         }
1424
1425         secondhalf = count-firsthalf;
1426         if (secondhalf) {
1427                 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1428                 fifo->tail  += secondhalf;
1429                 fifo->count -= secondhalf;
1430         }
1431
1432         if (count)
1433                 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]);
1434
1435         /* fill up the urb with all of our data and submit it */
1436         usb_fill_bulk_urb (urb, edge_serial->serial->dev,
1437                        usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1438                        buffer, count+2, edge_bulk_out_data_callback, edge_port);
1439
1440         /* decrement the number of credits we have by the number we just sent */
1441         edge_port->txCredits -= count;
1442         edge_port->icount.tx += count;
1443
1444         urb->dev = edge_serial->serial->dev;
1445         status = usb_submit_urb(urb, GFP_ATOMIC);
1446         if (status) {
1447                 /* something went wrong */
1448                 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
1449                 edge_port->write_in_progress = FALSE;
1450
1451                 /* revert the credits as something bad happened. */
1452                 edge_port->txCredits += count;
1453                 edge_port->icount.tx -= count;
1454         }
1455         dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1456 }
1457
1458
1459 /*****************************************************************************
1460  * edge_write_room
1461  *      this function is called by the tty driver when it wants to know how many
1462  *      bytes of data we can accept for a specific port.
1463  *      If successful, we return the amount of room that we have for this port
1464  *      (the txCredits),
1465  *      Otherwise we return a negative error number.
1466  *****************************************************************************/
1467 static int edge_write_room (struct usb_serial_port *port)
1468 {
1469         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1470         int room;
1471
1472         dbg("%s", __FUNCTION__);
1473
1474         if (edge_port == NULL)
1475                 return -ENODEV;
1476         if (edge_port->closePending == TRUE)
1477                 return -ENODEV;
1478
1479         dbg("%s - port %d", __FUNCTION__, port->number);
1480
1481         if (!edge_port->open) {
1482                 dbg("%s - port not opened", __FUNCTION__);
1483                 return -EINVAL;
1484         }
1485
1486         // total of both buffers is still txCredit
1487         room = edge_port->txCredits - edge_port->txfifo.count;
1488
1489         dbg("%s - returns %d", __FUNCTION__, room);
1490         return room;
1491 }
1492
1493
1494 /*****************************************************************************
1495  * edge_chars_in_buffer
1496  *      this function is called by the tty driver when it wants to know how many
1497  *      bytes of data we currently have outstanding in the port (data that has
1498  *      been written, but hasn't made it out the port yet)
1499  *      If successful, we return the number of bytes left to be written in the
1500  *      system,
1501  *      Otherwise we return a negative error number.
1502  *****************************************************************************/
1503 static int edge_chars_in_buffer (struct usb_serial_port *port)
1504 {
1505         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1506         int num_chars;
1507
1508         dbg("%s", __FUNCTION__);
1509
1510         if (edge_port == NULL)
1511                 return -ENODEV;
1512         if (edge_port->closePending == TRUE)
1513                 return -ENODEV;
1514
1515         if (!edge_port->open) {
1516                 dbg("%s - port not opened", __FUNCTION__);
1517                 return -EINVAL;
1518         }
1519
1520         num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1521         if (num_chars) {
1522                 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1523         }
1524
1525         return num_chars;
1526 }
1527
1528
1529 /*****************************************************************************
1530  * SerialThrottle
1531  *      this function is called by the tty driver when it wants to stop the data
1532  *      being read from the port.
1533  *****************************************************************************/
1534 static void edge_throttle (struct usb_serial_port *port)
1535 {
1536         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1537         struct tty_struct *tty;
1538         int status;
1539
1540         dbg("%s - port %d", __FUNCTION__, port->number);
1541
1542         if (edge_port == NULL)
1543                 return;
1544
1545         if (!edge_port->open) {
1546                 dbg("%s - port not opened", __FUNCTION__);
1547                 return;
1548         }
1549
1550         tty = port->tty;
1551         if (!tty) {
1552                 dbg ("%s - no tty available", __FUNCTION__);
1553                 return;
1554         }
1555
1556         /* if we are implementing XON/XOFF, send the stop character */
1557         if (I_IXOFF(tty)) {
1558                 unsigned char stop_char = STOP_CHAR(tty);
1559                 status = edge_write (port, 0, &stop_char, 1);
1560                 if (status <= 0) {
1561                         return;
1562                 }
1563         }
1564
1565         /* if we are implementing RTS/CTS, toggle that line */
1566         if (tty->termios->c_cflag & CRTSCTS) {
1567                 edge_port->shadowMCR &= ~MCR_RTS;
1568                 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1569                 if (status != 0) {
1570                         return;
1571                 }
1572         }
1573
1574         return;
1575 }
1576
1577
1578 /*****************************************************************************
1579  * edge_unthrottle
1580  *      this function is called by the tty driver when it wants to resume the data
1581  *      being read from the port (called after SerialThrottle is called)
1582  *****************************************************************************/
1583 static void edge_unthrottle (struct usb_serial_port *port)
1584 {
1585         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1586         struct tty_struct *tty;
1587         int status;
1588
1589         dbg("%s - port %d", __FUNCTION__, port->number);
1590
1591         if (edge_port == NULL)
1592                 return;
1593
1594         if (!edge_port->open) {
1595                 dbg("%s - port not opened", __FUNCTION__);
1596                 return;
1597         }
1598
1599         tty = port->tty;
1600         if (!tty) {
1601                 dbg ("%s - no tty available", __FUNCTION__);
1602                 return;
1603         }
1604
1605         /* if we are implementing XON/XOFF, send the start character */
1606         if (I_IXOFF(tty)) {
1607                 unsigned char start_char = START_CHAR(tty);
1608                 status = edge_write (port, 0, &start_char, 1);
1609                 if (status <= 0) {
1610                         return;
1611                 }
1612         }
1613
1614         /* if we are implementing RTS/CTS, toggle that line */
1615         if (tty->termios->c_cflag & CRTSCTS) {
1616                 edge_port->shadowMCR |= MCR_RTS;
1617                 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1618                 if (status != 0) {
1619                         return;
1620                 }
1621         }
1622
1623         return;
1624 }
1625
1626
1627 /*****************************************************************************
1628  * SerialSetTermios
1629  *      this function is called by the tty driver when it wants to change the termios structure
1630  *****************************************************************************/
1631 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
1632 {
1633         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1634         struct tty_struct *tty = port->tty;
1635         unsigned int cflag;
1636
1637         if (!port->tty || !port->tty->termios) {
1638                 dbg ("%s - no tty or termios", __FUNCTION__);
1639                 return;
1640         }
1641
1642         cflag = tty->termios->c_cflag;
1643         /* check that they really want us to change something */
1644         if (old_termios) {
1645                 if ((cflag == old_termios->c_cflag) &&
1646                     (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
1647                         dbg("%s - nothing to change", __FUNCTION__);
1648                         return;
1649                 }
1650         }
1651
1652         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1653             tty->termios->c_cflag,
1654             RELEVANT_IFLAG(tty->termios->c_iflag));
1655         if (old_termios) {
1656                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1657                     old_termios->c_cflag,
1658                     RELEVANT_IFLAG(old_termios->c_iflag));
1659         }
1660
1661         dbg("%s - port %d", __FUNCTION__, port->number);
1662
1663         if (edge_port == NULL)
1664                 return;
1665
1666         if (!edge_port->open) {
1667                 dbg("%s - port not opened", __FUNCTION__);
1668                 return;
1669         }
1670
1671         /* change the port settings to the new ones specified */
1672         change_port_settings (edge_port, old_termios);
1673
1674         return;
1675 }
1676
1677
1678 /*****************************************************************************
1679  * get_lsr_info - get line status register info
1680  *
1681  * Purpose: Let user call ioctl() to get info when the UART physically
1682  *          is emptied.  On bus types like RS485, the transmitter must
1683  *          release the bus after transmitting. This must be done when
1684  *          the transmit shift register is empty, not be done when the
1685  *          transmit holding register is empty.  This functionality
1686  *          allows an RS485 driver to be written in user space.
1687  *****************************************************************************/
1688 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value)
1689 {
1690         unsigned int result = 0;
1691
1692         if (edge_port->maxTxCredits == edge_port->txCredits &&
1693             edge_port->txfifo.count == 0) {
1694                 dbg("%s -- Empty", __FUNCTION__);
1695                 result = TIOCSER_TEMT;
1696         }
1697
1698         if (copy_to_user(value, &result, sizeof(int)))
1699                 return -EFAULT;
1700         return 0;
1701 }
1702
1703 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
1704 {
1705         unsigned int result = 0;
1706         struct tty_struct *tty = edge_port->port->tty;
1707
1708         if (!tty)
1709                 return -ENOIOCTLCMD;
1710
1711         result = tty->read_cnt;
1712
1713         dbg("%s(%d) = %d", __FUNCTION__,  edge_port->port->number, result);
1714         if (copy_to_user(value, &result, sizeof(int)))
1715                 return -EFAULT;
1716         //return 0;
1717         return -ENOIOCTLCMD;
1718 }
1719
1720 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
1721 {
1722         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1723         unsigned int mcr;
1724
1725         dbg("%s - port %d", __FUNCTION__, port->number);
1726
1727         mcr = edge_port->shadowMCR;
1728         if (set & TIOCM_RTS)
1729                 mcr |= MCR_RTS;
1730         if (set & TIOCM_DTR)
1731                 mcr |= MCR_DTR;
1732         if (set & TIOCM_LOOP)
1733                 mcr |= MCR_LOOPBACK;
1734
1735         if (clear & TIOCM_RTS)
1736                 mcr &= ~MCR_RTS;
1737         if (clear & TIOCM_DTR)
1738                 mcr &= ~MCR_DTR;
1739         if (clear & TIOCM_LOOP)
1740                 mcr &= ~MCR_LOOPBACK;
1741
1742         edge_port->shadowMCR = mcr;
1743
1744         send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1745
1746         return 0;
1747 }
1748
1749 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
1750 {
1751         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1752         unsigned int result = 0;
1753         unsigned int msr;
1754         unsigned int mcr;
1755
1756         dbg("%s - port %d", __FUNCTION__, port->number);
1757
1758         msr = edge_port->shadowMSR;
1759         mcr = edge_port->shadowMCR;
1760         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
1761                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
1762                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
1763                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
1764                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
1765                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
1766
1767
1768         dbg("%s -- %x", __FUNCTION__, result);
1769
1770         return result;
1771 }
1772
1773 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
1774 {
1775         struct serial_struct tmp;
1776
1777         if (!retinfo)
1778                 return -EFAULT;
1779
1780         memset(&tmp, 0, sizeof(tmp));
1781
1782         tmp.type                = PORT_16550A;
1783         tmp.line                = edge_port->port->serial->minor;
1784         tmp.port                = edge_port->port->number;
1785         tmp.irq                 = 0;
1786         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1787         tmp.xmit_fifo_size      = edge_port->maxTxCredits;
1788         tmp.baud_base           = 9600;
1789         tmp.close_delay         = 5*HZ;
1790         tmp.closing_wait        = 30*HZ;
1791 //      tmp.custom_divisor      = state->custom_divisor;
1792 //      tmp.hub6                = state->hub6;
1793 //      tmp.io_type             = state->io_type;
1794
1795         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1796                 return -EFAULT;
1797         return 0;
1798 }
1799
1800
1801
1802 /*****************************************************************************
1803  * SerialIoctl
1804  *      this function handles any ioctl calls to the driver
1805  *****************************************************************************/
1806 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1807 {
1808         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1809         struct async_icount cnow;
1810         struct async_icount cprev;
1811         struct serial_icounter_struct icount;
1812
1813
1814         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1815
1816         switch (cmd) {
1817                 // return number of bytes available
1818                 case TIOCINQ:
1819                         dbg("%s (%d) TIOCINQ", __FUNCTION__,  port->number);
1820                         return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
1821                         break;
1822
1823                 case TIOCSERGETLSR:
1824                         dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__,  port->number);
1825                         return get_lsr_info(edge_port, (unsigned int __user *) arg);
1826                         return 0;
1827
1828                 case TIOCGSERIAL:
1829                         dbg("%s (%d) TIOCGSERIAL", __FUNCTION__,  port->number);
1830                         return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1831
1832                 case TIOCSSERIAL:
1833                         dbg("%s (%d) TIOCSSERIAL", __FUNCTION__,  port->number);
1834                         break;
1835
1836                 case TIOCMIWAIT:
1837                         dbg("%s (%d) TIOCMIWAIT", __FUNCTION__,  port->number);
1838                         cprev = edge_port->icount;
1839                         while (1) {
1840                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
1841                                 /* see if a signal did it */
1842                                 if (signal_pending(current))
1843                                         return -ERESTARTSYS;
1844                                 cnow = edge_port->icount;
1845                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1846                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1847                                         return -EIO; /* no change => error */
1848                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1849                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1850                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
1851                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1852                                         return 0;
1853                                 }
1854                                 cprev = cnow;
1855                         }
1856                         /* NOTREACHED */
1857                         break;
1858
1859                 case TIOCGICOUNT:
1860                         cnow = edge_port->icount;
1861                         memset(&icount, 0, sizeof(icount));
1862                         icount.cts = cnow.cts;
1863                         icount.dsr = cnow.dsr;
1864                         icount.rng = cnow.rng;
1865                         icount.dcd = cnow.dcd;
1866                         icount.rx = cnow.rx;
1867                         icount.tx = cnow.tx;
1868                         icount.frame = cnow.frame;
1869                         icount.overrun = cnow.overrun;
1870                         icount.parity = cnow.parity;
1871                         icount.brk = cnow.brk;
1872                         icount.buf_overrun = cnow.buf_overrun;
1873
1874                         dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,  port->number, icount.rx, icount.tx );
1875                         if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1876                                 return -EFAULT;
1877                         return 0;
1878         }
1879
1880         return -ENOIOCTLCMD;
1881 }
1882
1883
1884 /*****************************************************************************
1885  * SerialBreak
1886  *      this function sends a break to the port
1887  *****************************************************************************/
1888 static void edge_break (struct usb_serial_port *port, int break_state)
1889 {
1890         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1891         int status;
1892
1893         /* flush and chase */
1894         edge_port->chaseResponsePending = TRUE;
1895
1896         dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1897         status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1898         if (status == 0) {
1899                 // block until chase finished
1900                 block_until_chase_response(edge_port);
1901         } else {
1902                 edge_port->chaseResponsePending = FALSE;
1903         }
1904
1905         if (break_state == -1) {
1906                 dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1907                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1908         } else {
1909                 dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1910                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1911         }
1912         if (status) {
1913                 dbg("%s - error sending break set/clear command.", __FUNCTION__);
1914         }
1915
1916         return;
1917 }
1918
1919
1920 /*****************************************************************************
1921  * process_rcvd_data
1922  *      this function handles the data received on the bulk in pipe.
1923  *****************************************************************************/
1924 static int process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1925 {
1926         struct usb_serial_port *port;
1927         struct edgeport_port *edge_port;
1928         struct tty_struct *tty;
1929         __u16 lastBufferLength;
1930         __u16 rxLen;
1931         int i;
1932
1933         dbg("%s", __FUNCTION__);
1934
1935         lastBufferLength = bufferLength + 1;
1936
1937         while (bufferLength > 0) {
1938                 /* failsafe incase we get a message that we don't understand */
1939                 if (lastBufferLength == bufferLength) {
1940                         dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1941                         break;
1942                 }
1943                 lastBufferLength = bufferLength;
1944
1945                 switch (edge_serial->rxState) {
1946                         case EXPECT_HDR1:
1947                                 edge_serial->rxHeader1 = *buffer;
1948                                 ++buffer;
1949                                 --bufferLength;
1950
1951                                 if (bufferLength == 0) {
1952                                         edge_serial->rxState = EXPECT_HDR2;
1953                                         break;
1954                                 }
1955                                 /* otherwise, drop on through */
1956
1957                         case EXPECT_HDR2:
1958                                 edge_serial->rxHeader2 = *buffer;
1959                                 ++buffer;
1960                                 --bufferLength;
1961
1962                                 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
1963
1964                                 // Process depending on whether this header is
1965                                 // data or status
1966
1967                                 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1968                                         // Decode this status header and goto EXPECT_HDR1 (if we
1969                                         // can process the status with only 2 bytes), or goto
1970                                         // EXPECT_HDR3 to get the third byte.
1971
1972                                         edge_serial->rxPort       = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1973                                         edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
1974
1975                                         if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
1976                                                 // This status needs additional bytes. Save what we have
1977                                                 // and then wait for more data.
1978                                                 edge_serial->rxStatusParam = edge_serial->rxHeader2;
1979
1980                                                 edge_serial->rxState = EXPECT_HDR3;
1981                                                 break;
1982                                         }
1983
1984                                         // We have all the header bytes, process the status now
1985                                         process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
1986
1987                                         edge_serial->rxState = EXPECT_HDR1;
1988                                         break;
1989                                 } else {
1990                                         edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1991                                         edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
1992
1993                                         dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
1994
1995                                         //ASSERT( DevExt->RxPort < DevExt->NumPorts );
1996                                         //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
1997
1998                                         if (bufferLength == 0 ) {
1999                                                 edge_serial->rxState = EXPECT_DATA;
2000                                                 break;
2001                                         }
2002                                         // Else, drop through
2003                                 }
2004
2005                         case EXPECT_DATA:       // Expect data
2006
2007                                 if (bufferLength < edge_serial->rxBytesRemaining) {
2008                                         rxLen = bufferLength;
2009                                         edge_serial->rxState = EXPECT_DATA;     // Expect data to start next buffer
2010                                 } else {
2011                                         // BufLen >= RxBytesRemaining
2012                                         rxLen = edge_serial->rxBytesRemaining;
2013                                         edge_serial->rxState = EXPECT_HDR1;     // Start another header next time
2014                                 }
2015
2016                                 bufferLength -= rxLen;
2017                                 edge_serial->rxBytesRemaining -= rxLen;
2018
2019                                 /* spit this data back into the tty driver if this port is open */
2020                                 if (rxLen) {
2021                                         port = edge_serial->serial->port[edge_serial->rxPort];
2022                                         edge_port = usb_get_serial_port_data(port);
2023                                         if (edge_port->open) {
2024                                                 tty = edge_port->port->tty;
2025                                                 if (tty) {
2026                                                         dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
2027                                                         for (i = 0; i < rxLen ; ++i) {
2028                                                                 /* if we insert more than TTY_FLIPBUF_SIZE characters, we drop them. */
2029                                                                 if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
2030                                                                         tty_flip_buffer_push(tty);
2031                                                                 }
2032                                                                 /* this doesn't actually push the data through unless tty->low_latency is set */
2033                                                                 tty_insert_flip_char(tty, buffer[i], 0);
2034                                                         }
2035                                                         tty_flip_buffer_push(tty);
2036                                                 }
2037                                                 edge_port->icount.rx += rxLen;
2038                                         }
2039                                         buffer += rxLen;
2040                                 }
2041
2042                                 break;
2043
2044                         case EXPECT_HDR3:                       // Expect 3rd byte of status header
2045                                 edge_serial->rxHeader3 = *buffer;
2046                                 ++buffer;
2047                                 --bufferLength;
2048
2049                                 // We have all the header bytes, process the status now
2050                                 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
2051                                 edge_serial->rxState = EXPECT_HDR1;
2052                                 break;
2053
2054                 }
2055         }
2056
2057         return 0;
2058 }
2059
2060
2061 /*****************************************************************************
2062  * process_rcvd_status
2063  *      this function handles the any status messages received on the bulk in pipe.
2064  *****************************************************************************/
2065 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
2066 {
2067         struct usb_serial_port *port;
2068         struct edgeport_port *edge_port;
2069         __u8 code = edge_serial->rxStatusCode;
2070
2071         /* switch the port pointer to the one being currently talked about */
2072         port = edge_serial->serial->port[edge_serial->rxPort];
2073         edge_port = usb_get_serial_port_data(port);
2074         if (edge_port == NULL) {
2075                 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
2076                 return;
2077         }
2078
2079         dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
2080
2081         if (code == IOSP_EXT_STATUS) {
2082                 switch (byte2) {
2083                         case IOSP_EXT_STATUS_CHASE_RSP:
2084                                 // we want to do EXT status regardless of port open/closed
2085                                 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
2086                                 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
2087                                 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
2088                                 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
2089                                 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
2090                                 // like wait longer in block_until_chase_response, but for now we don't.
2091                                 edge_port->chaseResponsePending = FALSE;
2092                                 wake_up_interruptible (&edge_port->wait_chase);
2093                                 return;
2094
2095                         case IOSP_EXT_STATUS_RX_CHECK_RSP:
2096                                 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
2097                                 //Port->RxCheckRsp = TRUE;
2098                                 return;
2099                 }
2100         }
2101
2102         if (code == IOSP_STATUS_OPEN_RSP) {
2103                 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
2104                 edge_port->maxTxCredits = edge_port->txCredits;
2105                 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
2106                 handle_new_msr (edge_port, byte2);
2107
2108                 /* send the current line settings to the port so we are in sync with any further termios calls */
2109                 if (edge_port->port->tty)
2110                         change_port_settings (edge_port, edge_port->port->tty->termios);
2111
2112                 /* we have completed the open */
2113                 edge_port->openPending = FALSE;
2114                 edge_port->open = TRUE;
2115                 wake_up_interruptible(&edge_port->wait_open);
2116                 return;
2117         }
2118
2119         // If port is closed, silently discard all rcvd status. We can
2120         // have cases where buffered status is received AFTER the close
2121         // port command is sent to the Edgeport.
2122         if ((!edge_port->open ) || (edge_port->closePending)) {
2123                 return;
2124         }
2125
2126         switch (code) {
2127                 // Not currently sent by Edgeport
2128                 case IOSP_STATUS_LSR:
2129                         dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2130                         handle_new_lsr (edge_port, FALSE, byte2, 0);
2131                         break;
2132
2133                 case IOSP_STATUS_LSR_DATA:
2134                         dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2135                         // byte2 is LSR Register
2136                         // byte3 is broken data byte
2137                         handle_new_lsr (edge_port, TRUE, byte2, byte3);
2138                         break;
2139                         //
2140                         //      case IOSP_EXT_4_STATUS:
2141                         //              dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2142                         //              break;
2143                         //
2144                 case IOSP_STATUS_MSR:
2145                         dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2146
2147                         // Process this new modem status and generate appropriate
2148                         // events, etc, based on the new status. This routine
2149                         // also saves the MSR in Port->ShadowMsr.
2150                         handle_new_msr(edge_port, byte2);
2151                         break;
2152
2153                 default:
2154                         dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2155                         break;
2156         }
2157
2158         return;
2159 }
2160
2161
2162 /*****************************************************************************
2163  * handle_new_msr
2164  *      this function handles any change to the msr register for a port.
2165  *****************************************************************************/
2166 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2167 {
2168         struct  async_icount *icount;
2169
2170         dbg("%s %02x", __FUNCTION__, newMsr);
2171
2172         if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2173                 icount = &edge_port->icount;
2174
2175                 /* update input line counters */
2176                 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2177                         icount->cts++;
2178                 }
2179                 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2180                         icount->dsr++;
2181                 }
2182                 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2183                         icount->dcd++;
2184                 }
2185                 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2186                         icount->rng++;
2187                 }
2188                 wake_up_interruptible(&edge_port->delta_msr_wait);
2189         }
2190
2191         /* Save the new modem status */
2192         edge_port->shadowMSR = newMsr & 0xf0;
2193
2194         return;
2195 }
2196
2197
2198 /*****************************************************************************
2199  * handle_new_lsr
2200  *      this function handles any change to the lsr register for a port.
2201  *****************************************************************************/
2202 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2203 {
2204         __u8    newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2205         struct  async_icount *icount;
2206
2207         dbg("%s - %02x", __FUNCTION__, newLsr);
2208
2209         edge_port->shadowLSR = lsr;
2210
2211         if (newLsr & LSR_BREAK) {
2212                 //
2213                 // Parity and Framing errors only count if they
2214                 // occur exclusive of a break being
2215                 // received.
2216                 //
2217                 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2218         }
2219
2220         /* Place LSR data byte into Rx buffer */
2221         if (lsrData && edge_port->port->tty) {
2222                 tty_insert_flip_char(edge_port->port->tty, data, 0);
2223                 tty_flip_buffer_push(edge_port->port->tty);
2224         }
2225
2226         /* update input line counters */
2227         icount = &edge_port->icount;
2228         if (newLsr & LSR_BREAK) {
2229                 icount->brk++;
2230         }
2231         if (newLsr & LSR_OVER_ERR) {
2232                 icount->overrun++;
2233         }
2234         if (newLsr & LSR_PAR_ERR) {
2235                 icount->parity++;
2236         }
2237         if (newLsr & LSR_FRM_ERR) {
2238                 icount->frame++;
2239         }
2240
2241         return;
2242 }
2243
2244
2245 /****************************************************************************
2246  * sram_write
2247  *      writes a number of bytes to the Edgeport device's sram starting at the
2248  *      given address.
2249  *      If successful returns the number of bytes written, otherwise it returns
2250  *      a negative error number of the problem.
2251  ****************************************************************************/
2252 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2253 {
2254         int result;
2255         __u16 current_length;
2256         unsigned char *transfer_buffer;
2257
2258         dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2259
2260         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2261         if (!transfer_buffer) {
2262                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2263                 return -ENOMEM;
2264         }
2265
2266         /* need to split these writes up into 64 byte chunks */
2267         result = 0;
2268         while (length > 0) {
2269                 if (length > 64) {
2270                         current_length = 64;
2271                 } else {
2272                         current_length = length;
2273                 }
2274 //              dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2275                 memcpy (transfer_buffer, data, current_length);
2276                 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2277                                           0x40, addr, extAddr, transfer_buffer, current_length, 300);
2278                 if (result < 0)
2279                         break;
2280                 length -= current_length;
2281                 addr += current_length;
2282                 data += current_length;
2283         }
2284
2285         kfree (transfer_buffer);
2286         return result;
2287 }
2288
2289
2290 /****************************************************************************
2291  * rom_write
2292  *      writes a number of bytes to the Edgeport device's ROM starting at the
2293  *      given address.
2294  *      If successful returns the number of bytes written, otherwise it returns
2295  *      a negative error number of the problem.
2296  ****************************************************************************/
2297 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2298 {
2299         int result;
2300         __u16 current_length;
2301         unsigned char *transfer_buffer;
2302
2303 //      dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2304
2305         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2306         if (!transfer_buffer) {
2307                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2308                 return -ENOMEM;
2309         }
2310
2311         /* need to split these writes up into 64 byte chunks */
2312         result = 0;
2313         while (length > 0) {
2314                 if (length > 64) {
2315                         current_length = 64;
2316                 } else {
2317                         current_length = length;
2318                 }
2319 //              dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2320                 memcpy (transfer_buffer, data, current_length);
2321                 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2322                                           0x40, addr, extAddr, transfer_buffer, current_length, 300);
2323                 if (result < 0)
2324                         break;
2325                 length -= current_length;
2326                 addr += current_length;
2327                 data += current_length;
2328         }
2329
2330         kfree (transfer_buffer);
2331         return result;
2332 }
2333
2334
2335 /****************************************************************************
2336  * rom_read
2337  *      reads a number of bytes from the Edgeport device starting at the given
2338  *      address.
2339  *      If successful returns the number of bytes read, otherwise it returns
2340  *      a negative error number of the problem.
2341  ****************************************************************************/
2342 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2343 {
2344         int result;
2345         __u16 current_length;
2346         unsigned char *transfer_buffer;
2347
2348         dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2349
2350         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2351         if (!transfer_buffer) {
2352                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2353                 return -ENOMEM;
2354         }
2355
2356         /* need to split these reads up into 64 byte chunks */
2357         result = 0;
2358         while (length > 0) {
2359                 if (length > 64) {
2360                         current_length = 64;
2361                 } else {
2362                         current_length = length;
2363                 }
2364 //              dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2365                 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2366                                           0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2367                 if (result < 0)
2368                         break;
2369                 memcpy (data, transfer_buffer, current_length);
2370                 length -= current_length;
2371                 addr += current_length;
2372                 data += current_length;
2373         }
2374
2375         kfree (transfer_buffer);
2376         return result;
2377 }
2378
2379
2380 /****************************************************************************
2381  * send_iosp_ext_cmd
2382  *      Is used to send a IOSP message to the Edgeport device
2383  ****************************************************************************/
2384 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2385 {
2386         unsigned char   *buffer;
2387         unsigned char   *currentCommand;
2388         int             length = 0;
2389         int             status = 0;
2390
2391         dbg("%s - %d, %d", __FUNCTION__, command, param);
2392
2393         buffer =  kmalloc (10, GFP_ATOMIC);
2394         if (!buffer) {
2395                 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2396                 return -ENOMEM;
2397         }
2398
2399         currentCommand = buffer;
2400
2401         MAKE_CMD_EXT_CMD (&currentCommand, &length,
2402                           edge_port->port->number - edge_port->port->serial->minor,
2403                           command, param);
2404
2405         status = write_cmd_usb (edge_port, buffer, length);
2406         if (status) {
2407                 /* something bad happened, let's free up the memory */
2408                 kfree(buffer);
2409         }
2410
2411         return status;
2412 }
2413
2414
2415 /*****************************************************************************
2416  * write_cmd_usb
2417  *      this function writes the given buffer out to the bulk write endpoint.
2418  *****************************************************************************/
2419 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2420 {
2421         struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2422         int status = 0;
2423         struct urb *urb;
2424         int timeout;
2425
2426         usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
2427
2428         /* Allocate our next urb */
2429         urb = usb_alloc_urb (0, GFP_ATOMIC);
2430         if (!urb)
2431                 return -ENOMEM;
2432
2433         CmdUrbs++;
2434         dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2435
2436         usb_fill_bulk_urb (urb, edge_serial->serial->dev,
2437                        usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2438                        buffer, length, edge_bulk_out_cmd_callback, edge_port);
2439
2440         edge_port->commandPending = TRUE;
2441         status = usb_submit_urb(urb, GFP_ATOMIC);
2442
2443         if (status) {
2444                 /* something went wrong */
2445                 dbg("%s - usb_submit_urb(write bulk) failed", __FUNCTION__);
2446                 usb_unlink_urb (urb);
2447                 usb_free_urb   (urb);
2448                 return status;
2449         }
2450
2451         // wait for command to finish
2452         timeout = COMMAND_TIMEOUT;
2453 #if 0
2454         while (timeout && edge_port->commandPending == TRUE) {
2455                 timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);
2456         }
2457
2458         if (edge_port->commandPending == TRUE) {
2459                 /* command timed out */
2460                 dbg("%s - command timed out", __FUNCTION__);
2461                 status = -EINVAL;
2462         }
2463 #endif
2464         return status;
2465 }
2466
2467
2468 /*****************************************************************************
2469  * send_cmd_write_baud_rate
2470  *      this function sends the proper command to change the baud rate of the
2471  *      specified port.
2472  *****************************************************************************/
2473 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2474 {
2475         unsigned char *cmdBuffer;
2476         unsigned char *currCmd;
2477         int cmdLen = 0;
2478         int divisor;
2479         int status;
2480         unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2481
2482         dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2483
2484         status = calc_baud_rate_divisor (baudRate, &divisor);
2485         if (status) {
2486                 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
2487                 return status;
2488         }
2489
2490         // Alloc memory for the string of commands.
2491         cmdBuffer =  kmalloc (0x100, GFP_ATOMIC);
2492         if (!cmdBuffer) {
2493                 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2494                 return -ENOMEM;
2495         }
2496         currCmd = cmdBuffer;
2497
2498         // Enable access to divisor latch
2499         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2500
2501         // Write the divisor itself
2502         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2503         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2504
2505         // Restore original value to disable access to divisor latch
2506         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2507
2508         status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2509         if (status) {
2510                 /* something bad happened, let's free up the memory */
2511                 kfree (cmdBuffer);
2512         }
2513
2514         return status;
2515 }
2516
2517
2518 /*****************************************************************************
2519  * calc_baud_rate_divisor
2520  *      this function calculates the proper baud rate divisor for the specified
2521  *      baud rate.
2522  *****************************************************************************/
2523 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2524 {
2525         int i;
2526         __u16 custom;
2527         __u16 round1;
2528         __u16 round;
2529
2530
2531         dbg("%s - %d", __FUNCTION__, baudrate);
2532
2533         for (i = 0; i < NUM_ENTRIES(divisor_table); i++) {
2534                 if ( divisor_table[i].BaudRate == baudrate ) {
2535                         *divisor = divisor_table[i].Divisor;
2536                         return 0;
2537                 }
2538         }
2539
2540         // We have tried all of the standard baud rates
2541         // lets try to calculate the divisor for this baud rate
2542         // Make sure the baud rate is reasonable
2543         if (baudrate < 230400) {
2544                 // get divisor
2545                 custom = (__u16)(230400L  / baudrate);
2546
2547                 // Check for round off
2548                 round1 = (__u16)(2304000L / baudrate);
2549                 round = (__u16)(round1 - (custom * 10));
2550                 if (round > 4) {
2551                         custom++;
2552                 }
2553                 *divisor = custom;
2554
2555                 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2556                 return 0;
2557         }
2558
2559         return -1;
2560 }
2561
2562
2563 /*****************************************************************************
2564  * send_cmd_write_uart_register
2565  *      this function builds up a uart register message and sends to to the device.
2566  *****************************************************************************/
2567 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2568 {
2569         unsigned char *cmdBuffer;
2570         unsigned char *currCmd;
2571         unsigned long cmdLen = 0;
2572         int status;
2573
2574         dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2575
2576         // Alloc memory for the string of commands.
2577         cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2578         if (cmdBuffer == NULL ) {
2579                 return -ENOMEM;
2580         }
2581
2582         currCmd = cmdBuffer;
2583
2584         // Build a cmd in the buffer to write the given register
2585         MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2586                             edge_port->port->number - edge_port->port->serial->minor,
2587                             regNum, regValue);
2588
2589         status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2590         if (status) {
2591                 /* something bad happened, let's free up the memory */
2592                 kfree (cmdBuffer);
2593         }
2594
2595         return status;
2596 }
2597
2598
2599 /*****************************************************************************
2600  * change_port_settings
2601  *      This routine is called to set the UART on the device to match the specified
2602  *      new settings.
2603  *****************************************************************************/
2604 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2605 {
2606         struct tty_struct *tty;
2607         int baud;
2608         unsigned cflag;
2609         __u8 mask = 0xff;
2610         __u8 lData;
2611         __u8 lParity;
2612         __u8 lStop;
2613         __u8 rxFlow;
2614         __u8 txFlow;
2615         int status;
2616
2617         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2618
2619         if ((!edge_port->open) &&
2620             (!edge_port->openPending)) {
2621                 dbg("%s - port not opened", __FUNCTION__);
2622                 return;
2623         }
2624
2625         tty = edge_port->port->tty;
2626         if ((!tty) ||
2627             (!tty->termios)) {
2628                 dbg("%s - no tty structures", __FUNCTION__);
2629                 return;
2630         }
2631
2632         cflag = tty->termios->c_cflag;
2633
2634         switch (cflag & CSIZE) {
2635                 case CS5:   lData = LCR_BITS_5; mask = 0x1f;    dbg("%s - data bits = 5", __FUNCTION__);   break;
2636                 case CS6:   lData = LCR_BITS_6; mask = 0x3f;    dbg("%s - data bits = 6", __FUNCTION__);   break;
2637                 case CS7:   lData = LCR_BITS_7; mask = 0x7f;    dbg("%s - data bits = 7", __FUNCTION__);   break;
2638                 default:
2639                 case CS8:   lData = LCR_BITS_8;                 dbg("%s - data bits = 8", __FUNCTION__);   break;
2640         }
2641
2642         lParity = LCR_PAR_NONE;
2643         if (cflag & PARENB) {
2644                 if (cflag & PARODD) {
2645                         lParity = LCR_PAR_ODD;
2646                         dbg("%s - parity = odd", __FUNCTION__);
2647                 } else {
2648                         lParity = LCR_PAR_EVEN;
2649                         dbg("%s - parity = even", __FUNCTION__);
2650                 }
2651         } else {
2652                 dbg("%s - parity = none", __FUNCTION__);
2653         }
2654
2655         if (cflag & CSTOPB) {
2656                 lStop = LCR_STOP_2;
2657                 dbg("%s - stop bits = 2", __FUNCTION__);
2658         } else {
2659                 lStop = LCR_STOP_1;
2660                 dbg("%s - stop bits = 1", __FUNCTION__);
2661         }
2662
2663         /* figure out the flow control settings */
2664         rxFlow = txFlow = 0x00;
2665         if (cflag & CRTSCTS) {
2666                 rxFlow |= IOSP_RX_FLOW_RTS;
2667                 txFlow |= IOSP_TX_FLOW_CTS;
2668                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2669         } else {
2670                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2671         }
2672
2673         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2674         if (I_IXOFF(tty) || I_IXON(tty)) {
2675                 unsigned char stop_char  = STOP_CHAR(tty);
2676                 unsigned char start_char = START_CHAR(tty);
2677
2678                 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2679                 send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2680
2681                 /* if we are implementing INBOUND XON/XOFF */
2682                 if (I_IXOFF(tty)) {
2683                         rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2684                         dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2685                 } else {
2686                         dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2687                 }
2688
2689                 /* if we are implementing OUTBOUND XON/XOFF */
2690                 if (I_IXON(tty)) {
2691                         txFlow |= IOSP_TX_FLOW_XON_XOFF;
2692                         dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2693                 } else {
2694                         dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2695                 }
2696         }
2697
2698         /* Set flow control to the configured value */
2699         send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2700         send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2701
2702
2703         edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2704         edge_port->shadowLCR |= (lData | lParity | lStop);
2705
2706         edge_port->validDataMask = mask;
2707
2708         /* Send the updated LCR value to the EdgePort */
2709         status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2710         if (status != 0) {
2711                 return;
2712         }
2713
2714         /* set up the MCR register and send it to the EdgePort */
2715         edge_port->shadowMCR = MCR_MASTER_IE;
2716         if (cflag & CBAUD) {
2717                 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2718         }
2719         status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2720         if (status != 0) {
2721                 return;
2722         }
2723
2724         /* Determine divisor based on baud rate */
2725         baud = tty_get_baud_rate(tty);
2726         if (!baud) {
2727                 /* pick a default, any default... */
2728                 baud = 9600;
2729         }
2730
2731         dbg("%s - baud rate = %d", __FUNCTION__, baud);
2732         status = send_cmd_write_baud_rate (edge_port, baud);
2733
2734         return;
2735 }
2736
2737
2738 /****************************************************************************
2739  * unicode_to_ascii
2740  *      Turns a string from Unicode into ASCII.
2741  *      Doesn't do a good job with any characters that are outside the normal
2742  *      ASCII range, but it's only for debugging...
2743  *      NOTE: expects the unicode in LE format
2744  ****************************************************************************/
2745 static void unicode_to_ascii (char *string, __le16 *unicode, int unicode_size)
2746 {
2747         int i;
2748         for (i = 0; i < unicode_size; ++i) {
2749                 string[i] = (char)(le16_to_cpu(unicode[i]));
2750         }
2751         string[unicode_size] = 0x00;
2752 }
2753
2754
2755 /****************************************************************************
2756  * get_manufacturing_desc
2757  *      reads in the manufacturing descriptor and stores it into the serial
2758  *      structure.
2759  ****************************************************************************/
2760 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2761 {
2762         int response;
2763
2764         dbg("getting manufacturer descriptor");
2765
2766         response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2767                             (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2768                             (__u8 *)(&edge_serial->manuf_descriptor));
2769
2770         if (response < 1) {
2771                 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
2772         } else {
2773                 char string[30];
2774                 dbg("**Manufacturer Descriptor");
2775                 dbg("  RomSize:        %dK", edge_serial->manuf_descriptor.RomSize);
2776                 dbg("  RamSize:        %dK", edge_serial->manuf_descriptor.RamSize);
2777                 dbg("  CpuRev:         %d", edge_serial->manuf_descriptor.CpuRev);
2778                 dbg("  BoardRev:       %d", edge_serial->manuf_descriptor.BoardRev);
2779                 dbg("  NumPorts:       %d", edge_serial->manuf_descriptor.NumPorts);
2780                 dbg("  DescDate:       %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2781                 unicode_to_ascii (string, edge_serial->manuf_descriptor.SerialNumber, edge_serial->manuf_descriptor.SerNumLength/2-1);
2782                 dbg("  SerialNumber: %s", string);
2783                 unicode_to_ascii (string, edge_serial->manuf_descriptor.AssemblyNumber, edge_serial->manuf_descriptor.AssemblyNumLength/2-1);
2784                 dbg("  AssemblyNumber: %s", string);
2785                 unicode_to_ascii (string, edge_serial->manuf_descriptor.OemAssyNumber, edge_serial->manuf_descriptor.OemAssyNumLength/2-1);
2786                 dbg("  OemAssyNumber:  %s", string);
2787                 dbg("  UartType:       %d", edge_serial->manuf_descriptor.UartType);
2788                 dbg("  IonPid:         %d", edge_serial->manuf_descriptor.IonPid);
2789                 dbg("  IonConfig:      %d", edge_serial->manuf_descriptor.IonConfig);
2790         }
2791 }
2792
2793
2794 /****************************************************************************
2795  * get_boot_desc
2796  *      reads in the bootloader descriptor and stores it into the serial
2797  *      structure.
2798  ****************************************************************************/
2799 static void get_boot_desc (struct edgeport_serial *edge_serial)
2800 {
2801         int response;
2802
2803         dbg("getting boot descriptor");
2804
2805         response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2806                             (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2807                             (__u8 *)(&edge_serial->boot_descriptor));
2808
2809         if (response < 1) {
2810                 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
2811         } else {
2812                 dbg("**Boot Descriptor:");
2813                 dbg("  BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2814                 dbg("  MajorVersion:   %d", edge_serial->boot_descriptor.MajorVersion);
2815                 dbg("  MinorVersion:   %d", edge_serial->boot_descriptor.MinorVersion);
2816                 dbg("  BuildNumber:    %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2817                 dbg("  Capabilities:   0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2818                 dbg("  UConfig0:       %d", edge_serial->boot_descriptor.UConfig0);
2819                 dbg("  UConfig1:       %d", edge_serial->boot_descriptor.UConfig1);
2820         }
2821 }
2822
2823
2824 /****************************************************************************
2825  * load_application_firmware
2826  *      This is called to load the application firmware to the device
2827  ****************************************************************************/
2828 static void load_application_firmware (struct edgeport_serial *edge_serial)
2829 {
2830         struct edge_firmware_image_record *record;
2831         unsigned char *firmware;
2832         unsigned char *FirmwareImage;
2833         int ImageSize;
2834         int response;
2835
2836
2837         switch (edge_serial->product_info.iDownloadFile) {
2838                 case EDGE_DOWNLOAD_FILE_I930:
2839                         dbg("downloading firmware version (930) %d.%d.%d",
2840                             OperationalCodeImageVersion_GEN1.MajorVersion,
2841                             OperationalCodeImageVersion_GEN1.MinorVersion,
2842                             OperationalCodeImageVersion_GEN1.BuildNumber);
2843                         firmware = &OperationalCodeImage_GEN1[0];
2844                         FirmwareImage = &OperationalCodeImage_GEN1[0];
2845                         ImageSize = sizeof(OperationalCodeImage_GEN1);
2846                         break;
2847
2848                 case EDGE_DOWNLOAD_FILE_80251:
2849                         dbg("downloading firmware version (80251) %d.%d.%d",
2850                             OperationalCodeImageVersion_GEN2.MajorVersion,
2851                             OperationalCodeImageVersion_GEN2.MinorVersion,
2852                             OperationalCodeImageVersion_GEN2.BuildNumber);
2853                         firmware = &OperationalCodeImage_GEN2[0];
2854                         FirmwareImage = &OperationalCodeImage_GEN2[0];
2855                         ImageSize = sizeof(OperationalCodeImage_GEN2);
2856                         break;
2857
2858                 case EDGE_DOWNLOAD_FILE_NONE:
2859                         dbg     ("No download file specified, skipping download\n");
2860                         return;
2861
2862                 default:
2863                         return;
2864         }
2865
2866
2867         for (;;) {
2868                 record = (struct edge_firmware_image_record *)firmware;
2869                 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2870                 if (response < 0) {
2871                         dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), record->Len);
2872                         break;
2873                 }
2874                 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2875                 if (firmware >= &FirmwareImage[ImageSize]) {
2876                         break;
2877                 }
2878         }
2879
2880         dbg("sending exec_dl_code");
2881         response = usb_control_msg (edge_serial->serial->dev,
2882                                     usb_sndctrlpipe(edge_serial->serial->dev, 0),
2883                                     USB_REQUEST_ION_EXEC_DL_CODE,
2884                                     0x40, 0x4000, 0x0001, NULL, 0, 3000);
2885
2886         return;
2887 }
2888
2889
2890
2891
2892 /****************************************************************************
2893  * edge_startup
2894  ****************************************************************************/
2895 static int edge_startup (struct usb_serial *serial)
2896 {
2897         struct edgeport_serial *edge_serial;
2898         struct edgeport_port *edge_port;
2899         struct usb_device *dev;
2900         int i;
2901
2902         dev = serial->dev;
2903
2904         /* create our private serial structure */
2905         edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2906         if (edge_serial == NULL) {
2907                 dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2908                 return -ENOMEM;
2909         }
2910         memset (edge_serial, 0, sizeof(struct edgeport_serial));
2911         edge_serial->serial = serial;
2912         usb_set_serial_data(serial, edge_serial);
2913
2914         /* get the name for the device from the device */
2915         if ( (i = get_string(dev, dev->descriptor.iManufacturer, &edge_serial->name[0])) != 0) {
2916                 edge_serial->name[i-1] = ' ';
2917         }
2918
2919         get_string(dev, dev->descriptor.iProduct, &edge_serial->name[i]);
2920
2921         dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2922
2923         /* get the manufacturing descriptor for this device */
2924         get_manufacturing_desc (edge_serial);
2925
2926         /* get the boot descriptor */
2927         get_boot_desc (edge_serial);
2928
2929         get_product_info(edge_serial);
2930
2931         /* set the number of ports from the manufacturing description */
2932         /* serial->num_ports = serial->product_info.NumPorts; */
2933         if (edge_serial->product_info.NumPorts != serial->num_ports) {
2934                 warn("%s - Device Reported %d serial ports vs core "
2935                      "thinking we have %d ports, email greg@kroah.com this info.",
2936                      __FUNCTION__, edge_serial->product_info.NumPorts,
2937                      serial->num_ports);
2938         }
2939
2940         dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
2941
2942         /* now load the application firmware into this device */
2943         load_application_firmware (edge_serial);
2944
2945         dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
2946
2947         /* Check current Edgeport EEPROM and update if necessary */
2948         update_edgeport_E2PROM (edge_serial);
2949
2950         dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
2951
2952         /* set the configuration to use #1 */
2953 //      dbg("set_configuration 1");
2954 //      usb_set_configuration (dev, 1);
2955
2956         /* we set up the pointers to the endpoints in the edge_open function,
2957          * as the structures aren't created yet. */
2958
2959         /* set up our port private structures */
2960         for (i = 0; i < serial->num_ports; ++i) {
2961                 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2962                 if (edge_port == NULL) {
2963                         dev_err(&serial->dev->dev, "%s - Out of memory", __FUNCTION__);
2964                         usb_set_serial_data(serial, NULL);
2965                         kfree(edge_serial);
2966                         return -ENOMEM;
2967                 }
2968                 memset (edge_port, 0, sizeof(struct edgeport_port));
2969                 edge_port->port = serial->port[i];
2970                 usb_set_serial_port_data(serial->port[i], edge_port);
2971         }
2972
2973         return 0;
2974 }
2975
2976
2977
2978 /****************************************************************************
2979  * edge_shutdown
2980  *      This function is called whenever the device is removed from the usb bus.
2981  ****************************************************************************/
2982 static void edge_shutdown (struct usb_serial *serial)
2983 {
2984         int i;
2985
2986         dbg("%s", __FUNCTION__);
2987
2988         /* stop reads and writes on all ports */
2989         for (i=0; i < serial->num_ports; ++i) {
2990                 kfree (usb_get_serial_port_data(serial->port[i]));
2991                 usb_set_serial_port_data(serial->port[i],  NULL);
2992         }
2993         kfree (usb_get_serial_data(serial));
2994         usb_set_serial_data(serial, NULL);
2995 }
2996
2997
2998 /****************************************************************************
2999  * edgeport_init
3000  *      This is called by the module subsystem, or on startup to initialize us
3001  ****************************************************************************/
3002 static int __init edgeport_init(void)
3003 {
3004         int retval;
3005         retval = usb_serial_register(&edgeport_2port_device);
3006         if (retval)
3007                 goto failed_2port_device_register;
3008         retval = usb_serial_register(&edgeport_4port_device);
3009         if (retval)
3010                 goto failed_4port_device_register;
3011         retval = usb_serial_register(&edgeport_8port_device);
3012         if (retval)
3013                 goto failed_8port_device_register;
3014         retval = usb_register(&io_driver);
3015         if (retval)
3016                 goto failed_usb_register;
3017         info(DRIVER_DESC " " DRIVER_VERSION);
3018         return 0;
3019 failed_usb_register:
3020         usb_serial_deregister(&edgeport_8port_device);
3021 failed_8port_device_register:
3022         usb_serial_deregister(&edgeport_4port_device);
3023 failed_4port_device_register:
3024         usb_serial_deregister(&edgeport_2port_device);
3025 failed_2port_device_register:
3026         return retval;
3027 }
3028
3029
3030
3031 /****************************************************************************
3032  * edgeport_exit
3033  *      Called when the driver is about to be unloaded.
3034  ****************************************************************************/
3035 static void __exit edgeport_exit (void)
3036 {
3037         usb_deregister (&io_driver);
3038         usb_serial_deregister (&edgeport_2port_device);
3039         usb_serial_deregister (&edgeport_4port_device);
3040         usb_serial_deregister (&edgeport_8port_device);
3041 }
3042
3043 module_init(edgeport_init);
3044 module_exit(edgeport_exit);
3045
3046 /* Module information */
3047 MODULE_AUTHOR( DRIVER_AUTHOR );
3048 MODULE_DESCRIPTION( DRIVER_DESC );
3049 MODULE_LICENSE("GPL");
3050
3051 module_param(debug, bool, S_IRUGO | S_IWUSR);
3052 MODULE_PARM_DESC(debug, "Debug enabled or not");