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  * For questions or problems with this driver, contact Inside Out
  27  * Networks technical support, or Peter Berger <pberger@brimson.com>,
  28  * or Al Borchers <alborchers@steinerpoint.com>.
  29  *
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/jiffies.h>
  34 #include <linux/errno.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/tty.h>
  38 #include <linux/tty_driver.h>
  39 #include <linux/tty_flip.h>
  40 #include <linux/module.h>
  41 #include <linux/spinlock.h>
  42 #include <linux/serial.h>
  43 #include <linux/ioctl.h>
  44 #include <linux/wait.h>
  45 #include <asm/uaccess.h>
  46 #include <linux/usb.h>
  47 #include <linux/usb/serial.h>
  48 #include "io_edgeport.h"
  49 #include "io_ionsp.h"           /* info for the iosp messages */
  50 #include "io_16654.h"           /* 16654 UART defines */
  51
  52 /*
  53  * Version Information
  54  */
  55 #define DRIVER_VERSION "v2.7"
  56 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  57 #define DRIVER_DESC "Edgeport USB Serial Driver"
  58
  59 /* First, the latest boot code - for first generation edgeports */
  60 #define IMAGE_ARRAY_NAME        BootCodeImage_GEN1
  61 #define IMAGE_VERSION_NAME      BootCodeImageVersion_GEN1
  62 #include "io_fw_boot.h"         /* the bootloader firmware to download to a device, if it needs it */
  63
  64 /* for second generation edgeports */
  65 #define IMAGE_ARRAY_NAME        BootCodeImage_GEN2
  66 #define IMAGE_VERSION_NAME      BootCodeImageVersion_GEN2
  67 #include "io_fw_boot2.h"        /* the bootloader firmware to download to a device, if it needs it */
  68
  69 /* Then finally the main run-time operational code - for first generation edgeports */
  70 #define IMAGE_ARRAY_NAME        OperationalCodeImage_GEN1
  71 #define IMAGE_VERSION_NAME      OperationalCodeImageVersion_GEN1
  72 #include "io_fw_down.h"         /* Define array OperationalCodeImage[] */
  73
  74 /* for second generation edgeports */
  75 #define IMAGE_ARRAY_NAME        OperationalCodeImage_GEN2
  76 #define IMAGE_VERSION_NAME      OperationalCodeImageVersion_GEN2
  77 #include "io_fw_down2.h"        /* Define array OperationalCodeImage[] */
  78
  79 #define MAX_NAME_LEN            64
  80
  81 #define CHASE_TIMEOUT           (5*HZ)          /* 5 seconds */
  82 #define OPEN_TIMEOUT            (5*HZ)          /* 5 seconds */
  83 #define COMMAND_TIMEOUT         (5*HZ)          /* 5 seconds */
  84
  85 /* receive port state */
  86 enum RXSTATE {
  87         EXPECT_HDR1 = 0,        /* Expect header byte 1 */
  88         EXPECT_HDR2 = 1,        /* Expect header byte 2 */
  89         EXPECT_DATA = 2,        /* Expect 'RxBytesRemaining' data */
  90         EXPECT_HDR3 = 3,        /* Expect header byte 3 (for status hdrs only) */
  91 };
  92
  93
  94 /* Transmit Fifo
  95  * This Transmit queue is an extension of the edgeport Rx buffer.
  96  * The maximum amount of data buffered in both the edgeport
  97  * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits.
  98  */
  99 struct TxFifo {
 100         unsigned int    head;   /* index to head pointer (write) */
 101         unsigned int    tail;   /* index to tail pointer (read)  */
 102         unsigned int    count;  /* Bytes in queue */
 103         unsigned int    size;   /* Max size of queue (equal to Max number of TxCredits) */
 104         unsigned char   *fifo;  /* allocated Buffer */
 105 };
 106
 107 /* This structure holds all of the local port information */
 108 struct edgeport_port {
 109         __u16                   txCredits;              /* our current credits for this port */
 110         __u16                   maxTxCredits;           /* the max size of the port */
 111
 112         struct TxFifo           txfifo;                 /* transmit fifo -- size will be maxTxCredits */
 113         struct urb              *write_urb;             /* write URB for this port */
 114         char                    write_in_progress;      /* TRUE while a write URB is outstanding */
 115         spinlock_t              ep_lock;
 116
 117         __u8                    shadowLCR;              /* last LCR value received */
 118         __u8                    shadowMCR;              /* last MCR value received */
 119         __u8                    shadowMSR;              /* last MSR value received */
 120         __u8                    shadowLSR;              /* last LSR value received */
 121         __u8                    shadowXonChar;          /* last value set as XON char in Edgeport */
 122         __u8                    shadowXoffChar;         /* last value set as XOFF char in Edgeport */
 123         __u8                    validDataMask;
 124         __u32                   baudRate;
 125
 126         char                    open;
 127         char                    openPending;
 128         char                    commandPending;
 129         char                    closePending;
 130         char                    chaseResponsePending;
 131
 132         wait_queue_head_t       wait_chase;             /* for handling sleeping while waiting for chase to finish */
 133         wait_queue_head_t       wait_open;              /* for handling sleeping while waiting for open to finish */
 134         wait_queue_head_t       wait_command;           /* for handling sleeping while waiting for command to finish */
 135         wait_queue_head_t       delta_msr_wait;         /* for handling sleeping while waiting for msr change to happen */
 136
 137         struct async_icount     icount;
 138         struct usb_serial_port  *port;                  /* loop back to the owner of this object */
 139 };
 140
 141
 142 /* This structure holds all of the individual device information */
 143 struct edgeport_serial {
 144         char                    name[MAX_NAME_LEN+2];           /* string name of this device */
 145
 146         struct edge_manuf_descriptor    manuf_descriptor;       /* the manufacturer descriptor */
 147         struct edge_boot_descriptor     boot_descriptor;        /* the boot firmware descriptor */
 148         struct edgeport_product_info    product_info;           /* Product Info */
 149         struct edge_compatibility_descriptor epic_descriptor;   /* Edgeport compatible descriptor */
 150         int                     is_epic;                        /* flag if EPiC device or not */
 151
 152         __u8                    interrupt_in_endpoint;          /* the interrupt endpoint handle */
 153         unsigned char *         interrupt_in_buffer;            /* the buffer we use for the interrupt endpoint */
 154         struct urb *            interrupt_read_urb;             /* our interrupt urb */
 155
 156         __u8                    bulk_in_endpoint;               /* the bulk in endpoint handle */
 157         unsigned char *         bulk_in_buffer;                 /* the buffer we use for the bulk in endpoint */
 158         struct urb *            read_urb;                       /* our bulk read urb */
 159         int                     read_in_progress;
 160         spinlock_t              es_lock;
 161
 162         __u8                    bulk_out_endpoint;              /* the bulk out endpoint handle */
 163
 164         __s16                   rxBytesAvail;                   /* the number of bytes that we need to read from this device */
 165
 166         enum RXSTATE            rxState;                        /* the current state of the bulk receive processor */
 167         __u8                    rxHeader1;                      /* receive header byte 1 */
 168         __u8                    rxHeader2;                      /* receive header byte 2 */
 169         __u8                    rxHeader3;                      /* receive header byte 3 */
 170         __u8                    rxPort;                         /* the port that we are currently receiving data for */
 171         __u8                    rxStatusCode;                   /* the receive status code */
 172         __u8                    rxStatusParam;                  /* the receive status paramater */
 173         __s16                   rxBytesRemaining;               /* the number of port bytes left to read */
 174         struct usb_serial       *serial;                        /* loop back to the owner of this object */
 175 };
 176
 177 /* baud rate information */
 178 struct divisor_table_entry {
 179         __u32   BaudRate;
 180         __u16  Divisor;
 181 };
 182
 183 //
 184 // Define table of divisors for Rev A EdgePort/4 hardware
 185 // These assume a 3.6864MHz crystal, the standard /16, and
 186 // MCR.7 = 0.
 187 //
 188 static const struct divisor_table_entry divisor_table[] = {
 189         {   50,         4608},
 190         {   75,         3072},
 191         {   110,        2095},          /* 2094.545455 => 230450   => .0217 % over */
 192         {   134,        1713},          /* 1713.011152 => 230398.5 => .00065% under */
 193         {   150,        1536},
 194         {   300,        768},
 195         {   600,        384},
 196         {   1200,       192},
 197         {   1800,       128},
 198         {   2400,       96},
 199         {   4800,       48},
 200         {   7200,       32},
 201         {   9600,       24},
 202         {   14400,      16},
 203         {   19200,      12},
 204         {   38400,      6},
 205         {   57600,      4},
 206         {   115200,     2},
 207         {   230400,     1},
 208 };
 209
 210 /* local variables */
 211 static int debug;
 212
 213 static int low_latency = 1;     /* tty low latency flag, on by default */
 214
 215 static int CmdUrbs = 0;         /* Number of outstanding Command Write Urbs */
 216
 217
 218 /* local function prototypes */
 219
 220 /* function prototypes for all URB callbacks */
 221 static void edge_interrupt_callback     (struct urb *urb);
 222 static void edge_bulk_in_callback       (struct urb *urb);
 223 static void edge_bulk_out_data_callback (struct urb *urb);
 224 static void edge_bulk_out_cmd_callback  (struct urb *urb);
 225
 226 /* function prototypes for the usbserial callbacks */
 227 static int  edge_open                   (struct usb_serial_port *port, struct file *filp);
 228 static void edge_close                  (struct usb_serial_port *port, struct file *filp);
 229 static int  edge_write                  (struct usb_serial_port *port, const unsigned char *buf, int count);
 230 static int  edge_write_room             (struct usb_serial_port *port);
 231 static int  edge_chars_in_buffer        (struct usb_serial_port *port);
 232 static void edge_throttle               (struct usb_serial_port *port);
 233 static void edge_unthrottle             (struct usb_serial_port *port);
 234 static void edge_set_termios            (struct usb_serial_port *port, struct ktermios *old_termios);
 235 static int  edge_ioctl                  (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg);
 236 static void edge_break                  (struct usb_serial_port *port, int break_state);
 237 static int  edge_tiocmget               (struct usb_serial_port *port, struct file *file);
 238 static int  edge_tiocmset               (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear);
 239 static int  edge_startup                (struct usb_serial *serial);
 240 static void edge_shutdown               (struct usb_serial *serial);
 241
 242
 243 #include "io_tables.h"  /* all of the devices that this driver supports */
 244
 245 static struct usb_driver io_driver = {
 246         .name =         "io_edgeport",
 247         .probe =        usb_serial_probe,
 248         .disconnect =   usb_serial_disconnect,
 249         .id_table =     id_table_combined,
 250         .no_dynamic_id =        1,
 251 };
 252
 253 /* function prototypes for all of our local functions */
 254 static void  process_rcvd_data          (struct edgeport_serial *edge_serial, unsigned char *buffer, __u16 bufferLength);
 255 static void process_rcvd_status         (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3);
 256 static void edge_tty_recv                       (struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
 257 static void handle_new_msr              (struct edgeport_port *edge_port, __u8 newMsr);
 258 static void handle_new_lsr              (struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
 259 static int  send_iosp_ext_cmd           (struct edgeport_port *edge_port, __u8 command, __u8 param);
 260 static int  calc_baud_rate_divisor      (int baud_rate, int *divisor);
 261 static int  send_cmd_write_baud_rate    (struct edgeport_port *edge_port, int baudRate);
 262 static void change_port_settings        (struct edgeport_port *edge_port, struct ktermios *old_termios);
 263 static int  send_cmd_write_uart_register        (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue);
 264 static int  write_cmd_usb               (struct edgeport_port *edge_port, unsigned char *buffer, int writeLength);
 265 static void send_more_port_data         (struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
 266
 267 static int  sram_write                  (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 268 static int  rom_read                    (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 269 static int  rom_write                   (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data);
 270 static void get_manufacturing_desc      (struct edgeport_serial *edge_serial);
 271 static void get_boot_desc               (struct edgeport_serial *edge_serial);
 272 static void load_application_firmware   (struct edgeport_serial *edge_serial);
 273
 274 static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size);
 275
 276
 277 // ************************************************************************
 278 // ************************************************************************
 279 // ************************************************************************
 280 // ************************************************************************
 281
 282 /************************************************************************
 283  *                                                                      *
 284  * update_edgeport_E2PROM()     Compare current versions of             *
 285  *                              Boot ROM and Manufacture                *
 286  *                              Descriptors with versions               *
 287  *                              embedded in this driver                 *
 288  *                                                                      *
 289  ************************************************************************/
 290 static void update_edgeport_E2PROM (struct edgeport_serial *edge_serial)
 291 {
 292         __u32 BootCurVer;
 293         __u32 BootNewVer;
 294         __u8 BootMajorVersion;
 295         __u8 BootMinorVersion;
 296         __le16 BootBuildNumber;
 297         __u8 *BootImage;
 298         __u32 BootSize;
 299         struct edge_firmware_image_record *record;
 300         unsigned char *firmware;
 301         int response;
 302
 303
 304         switch (edge_serial->product_info.iDownloadFile) {
 305                 case EDGE_DOWNLOAD_FILE_I930:
 306                         BootMajorVersion        = BootCodeImageVersion_GEN1.MajorVersion;
 307                         BootMinorVersion        = BootCodeImageVersion_GEN1.MinorVersion;
 308                         BootBuildNumber         = cpu_to_le16(BootCodeImageVersion_GEN1.BuildNumber);
 309                         BootImage               = &BootCodeImage_GEN1[0];
 310                         BootSize                = sizeof( BootCodeImage_GEN1 );
 311                         break;
 312
 313                 case EDGE_DOWNLOAD_FILE_80251:
 314                         BootMajorVersion        = BootCodeImageVersion_GEN2.MajorVersion;
 315                         BootMinorVersion        = BootCodeImageVersion_GEN2.MinorVersion;
 316                         BootBuildNumber         = cpu_to_le16(BootCodeImageVersion_GEN2.BuildNumber);
 317                         BootImage               = &BootCodeImage_GEN2[0];
 318                         BootSize                = sizeof( BootCodeImage_GEN2 );
 319                         break;
 320
 321                 default:
 322                         return;
 323         }
 324
 325         // Check Boot Image Version
 326         BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) +
 327                      (edge_serial->boot_descriptor.MinorVersion << 16) +
 328                       le16_to_cpu(edge_serial->boot_descriptor.BuildNumber);
 329
 330         BootNewVer = (BootMajorVersion << 24) +
 331                      (BootMinorVersion << 16) +
 332                       le16_to_cpu(BootBuildNumber);
 333
 334         dbg("Current Boot Image version %d.%d.%d",
 335             edge_serial->boot_descriptor.MajorVersion,
 336             edge_serial->boot_descriptor.MinorVersion,
 337             le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
 338
 339
 340         if (BootNewVer > BootCurVer) {
 341                 dbg("**Update Boot Image from %d.%d.%d to %d.%d.%d",
 342                     edge_serial->boot_descriptor.MajorVersion,
 343                     edge_serial->boot_descriptor.MinorVersion,
 344                     le16_to_cpu(edge_serial->boot_descriptor.BuildNumber),
 345                     BootMajorVersion,
 346                     BootMinorVersion,
 347                     le16_to_cpu(BootBuildNumber));
 348
 349
 350                 dbg("Downloading new Boot Image");
 351
 352                 firmware = BootImage;
 353
 354                 for (;;) {
 355                         record = (struct edge_firmware_image_record *)firmware;
 356                         response = rom_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
 357                         if (response < 0) {
 358                                 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));
 359                                 break;
 360                         }
 361                         firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
 362                         if (firmware >= &BootImage[BootSize]) {
 363                                 break;
 364                         }
 365                 }
 366         } else {
 367                 dbg("Boot Image -- already up to date");
 368         }
 369 }
 370
 371
 372 /************************************************************************
 373  *                                                                      *
 374  *  Get string descriptor from device                                   *
 375  *                                                                      *
 376  ************************************************************************/
 377 static int get_string (struct usb_device *dev, int Id, char *string, int buflen)
 378 {
 379         struct usb_string_descriptor StringDesc;
 380         struct usb_string_descriptor *pStringDesc;
 381
 382         dbg("%s - USB String ID = %d", __FUNCTION__, Id );
 383
 384         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
 385                 return 0;
 386         }
 387
 388         pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
 389
 390         if (!pStringDesc) {
 391                 return 0;
 392         }
 393
 394         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
 395                 kfree(pStringDesc);
 396                 return 0;
 397         }
 398
 399         unicode_to_ascii(string, buflen, pStringDesc->wData, pStringDesc->bLength/2);
 400
 401         kfree(pStringDesc);
 402         dbg("%s - USB String %s", __FUNCTION__, string);
 403         return strlen(string);
 404 }
 405
 406
 407 #if 0
 408 /************************************************************************
 409  *
 410  *  Get string descriptor from device
 411  *
 412  ************************************************************************/
 413 static int get_string_desc (struct usb_device *dev, int Id, struct usb_string_descriptor **pRetDesc)
 414 {
 415         struct usb_string_descriptor StringDesc;
 416         struct usb_string_descriptor *pStringDesc;
 417
 418         dbg("%s - USB String ID = %d", __FUNCTION__, Id );
 419
 420         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, sizeof(StringDesc))) {
 421                 return 0;
 422         }
 423
 424         pStringDesc = kmalloc (StringDesc.bLength, GFP_KERNEL);
 425
 426         if (!pStringDesc) {
 427                 return -1;
 428         }
 429
 430         if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, StringDesc.bLength )) {
 431                 kfree(pStringDesc);
 432                 return -1;
 433         }
 434
 435         *pRetDesc = pStringDesc;
 436         return 0;
 437 }
 438 #endif
 439
 440 static void dump_product_info(struct edgeport_product_info *product_info)
 441 {
 442         // Dump Product Info structure
 443         dbg("**Product Information:");
 444         dbg("  ProductId             %x", product_info->ProductId );
 445         dbg("  NumPorts              %d", product_info->NumPorts );
 446         dbg("  ProdInfoVer           %d", product_info->ProdInfoVer );
 447         dbg("  IsServer              %d", product_info->IsServer);
 448         dbg("  IsRS232               %d", product_info->IsRS232 );
 449         dbg("  IsRS422               %d", product_info->IsRS422 );
 450         dbg("  IsRS485               %d", product_info->IsRS485 );
 451         dbg("  RomSize               %d", product_info->RomSize );
 452         dbg("  RamSize               %d", product_info->RamSize );
 453         dbg("  CpuRev                %x", product_info->CpuRev  );
 454         dbg("  BoardRev              %x", product_info->BoardRev);
 455         dbg("  BootMajorVersion      %d.%d.%d", product_info->BootMajorVersion,
 456             product_info->BootMinorVersion,
 457             le16_to_cpu(product_info->BootBuildNumber));
 458         dbg("  FirmwareMajorVersion  %d.%d.%d", product_info->FirmwareMajorVersion,
 459             product_info->FirmwareMinorVersion,
 460             le16_to_cpu(product_info->FirmwareBuildNumber));
 461         dbg("  ManufactureDescDate   %d/%d/%d", product_info->ManufactureDescDate[0],
 462             product_info->ManufactureDescDate[1],
 463             product_info->ManufactureDescDate[2]+1900);
 464         dbg("  iDownloadFile         0x%x", product_info->iDownloadFile);
 465         dbg("  EpicVer               %d", product_info->EpicVer);
 466 }
 467
 468 static void get_product_info(struct edgeport_serial *edge_serial)
 469 {
 470         struct edgeport_product_info *product_info = &edge_serial->product_info;
 471
 472         memset (product_info, 0, sizeof(struct edgeport_product_info));
 473
 474         product_info->ProductId         = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP);
 475         product_info->NumPorts          = edge_serial->manuf_descriptor.NumPorts;
 476         product_info->ProdInfoVer       = 0;
 477
 478         product_info->RomSize           = edge_serial->manuf_descriptor.RomSize;
 479         product_info->RamSize           = edge_serial->manuf_descriptor.RamSize;
 480         product_info->CpuRev            = edge_serial->manuf_descriptor.CpuRev;
 481         product_info->BoardRev          = edge_serial->manuf_descriptor.BoardRev;
 482
 483         product_info->BootMajorVersion  = edge_serial->boot_descriptor.MajorVersion;
 484         product_info->BootMinorVersion  = edge_serial->boot_descriptor.MinorVersion;
 485         product_info->BootBuildNumber   = edge_serial->boot_descriptor.BuildNumber;
 486
 487         memcpy(product_info->ManufactureDescDate, edge_serial->manuf_descriptor.DescDate, sizeof(edge_serial->manuf_descriptor.DescDate));
 488
 489         // check if this is 2nd generation hardware
 490         if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ION_DEVICE_ID_80251_NETCHIP) {
 491                 product_info->FirmwareMajorVersion      = OperationalCodeImageVersion_GEN2.MajorVersion;
 492                 product_info->FirmwareMinorVersion      = OperationalCodeImageVersion_GEN2.MinorVersion;
 493                 product_info->FirmwareBuildNumber       = cpu_to_le16(OperationalCodeImageVersion_GEN2.BuildNumber);
 494                 product_info->iDownloadFile             = EDGE_DOWNLOAD_FILE_80251;
 495         } else {
 496                 product_info->FirmwareMajorVersion      = OperationalCodeImageVersion_GEN1.MajorVersion;
 497                 product_info->FirmwareMinorVersion      = OperationalCodeImageVersion_GEN1.MinorVersion;
 498                 product_info->FirmwareBuildNumber       = cpu_to_le16(OperationalCodeImageVersion_GEN1.BuildNumber);
 499                 product_info->iDownloadFile             = EDGE_DOWNLOAD_FILE_I930;
 500         }
 501
 502         // Determine Product type and set appropriate flags
 503         switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) {
 504                 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE:
 505                 case ION_DEVICE_ID_EDGEPORT_4T:
 506                 case ION_DEVICE_ID_EDGEPORT_4:
 507                 case ION_DEVICE_ID_EDGEPORT_2:
 508                 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU:
 509                 case ION_DEVICE_ID_EDGEPORT_8:
 510                 case ION_DEVICE_ID_EDGEPORT_421:
 511                 case ION_DEVICE_ID_EDGEPORT_21:
 512                 case ION_DEVICE_ID_EDGEPORT_2_DIN:
 513                 case ION_DEVICE_ID_EDGEPORT_4_DIN:
 514                 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU:
 515                         product_info->IsRS232 = 1;
 516                         break;
 517
 518                 case ION_DEVICE_ID_EDGEPORT_2I:                            // Edgeport/2 RS422/RS485
 519                         product_info->IsRS422 = 1;
 520                         product_info->IsRS485 = 1;
 521                         break;
 522
 523                 case ION_DEVICE_ID_EDGEPORT_8I:                            // Edgeport/4 RS422
 524                 case ION_DEVICE_ID_EDGEPORT_4I:                            // Edgeport/4 RS422
 525                         product_info->IsRS422 = 1;
 526                         break;
 527         }
 528
 529         dump_product_info(product_info);
 530 }
 531
 532 static int get_epic_descriptor(struct edgeport_serial *ep)
 533 {
 534         int result;
 535         struct usb_serial *serial = ep->serial;
 536         struct edgeport_product_info *product_info = &ep->product_info;
 537         struct edge_compatibility_descriptor *epic = &ep->epic_descriptor;
 538         struct edge_compatibility_bits *bits;
 539
 540         ep->is_epic = 0;
 541         result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 542                                  USB_REQUEST_ION_GET_EPIC_DESC,
 543                                  0xC0, 0x00, 0x00,
 544                                  &ep->epic_descriptor,
 545                                  sizeof(struct edge_compatibility_descriptor),
 546                                  300);
 547
 548         dbg("%s result = %d", __FUNCTION__, result);
 549
 550         if (result > 0) {
 551                 ep->is_epic = 1;
 552                 memset(product_info, 0, sizeof(struct edgeport_product_info));
 553
 554                 product_info->NumPorts                  = epic->NumPorts;
 555                 product_info->ProdInfoVer               = 0;
 556                 product_info->FirmwareMajorVersion      = epic->MajorVersion;
 557                 product_info->FirmwareMinorVersion      = epic->MinorVersion;
 558                 product_info->FirmwareBuildNumber       = epic->BuildNumber;
 559                 product_info->iDownloadFile             = epic->iDownloadFile;
 560                 product_info->EpicVer                   = epic->EpicVer;
 561                 product_info->Epic                      = epic->Supports;
 562                 product_info->ProductId                 = ION_DEVICE_ID_EDGEPORT_COMPATIBLE;
 563                 dump_product_info(product_info);
 564
 565                 bits = &ep->epic_descriptor.Supports;
 566                 dbg("**EPIC descriptor:");
 567                 dbg("  VendEnableSuspend: %s", bits->VendEnableSuspend  ? "TRUE": "FALSE");
 568                 dbg("  IOSPOpen         : %s", bits->IOSPOpen           ? "TRUE": "FALSE" );
 569                 dbg("  IOSPClose        : %s", bits->IOSPClose          ? "TRUE": "FALSE" );
 570                 dbg("  IOSPChase        : %s", bits->IOSPChase          ? "TRUE": "FALSE" );
 571                 dbg("  IOSPSetRxFlow    : %s", bits->IOSPSetRxFlow      ? "TRUE": "FALSE" );
 572                 dbg("  IOSPSetTxFlow    : %s", bits->IOSPSetTxFlow      ? "TRUE": "FALSE" );
 573                 dbg("  IOSPSetXChar     : %s", bits->IOSPSetXChar       ? "TRUE": "FALSE" );
 574                 dbg("  IOSPRxCheck      : %s", bits->IOSPRxCheck        ? "TRUE": "FALSE" );
 575                 dbg("  IOSPSetClrBreak  : %s", bits->IOSPSetClrBreak    ? "TRUE": "FALSE" );
 576                 dbg("  IOSPWriteMCR     : %s", bits->IOSPWriteMCR       ? "TRUE": "FALSE" );
 577                 dbg("  IOSPWriteLCR     : %s", bits->IOSPWriteLCR       ? "TRUE": "FALSE" );
 578                 dbg("  IOSPSetBaudRate  : %s", bits->IOSPSetBaudRate    ? "TRUE": "FALSE" );
 579                 dbg("  TrueEdgeport     : %s", bits->TrueEdgeport       ? "TRUE": "FALSE" );
 580         }
 581
 582         return result;
 583 }
 584
 585
 586 /************************************************************************/
 587 /************************************************************************/
 588 /*            U S B  C A L L B A C K   F U N C T I O N S                */
 589 /*            U S B  C A L L B A C K   F U N C T I O N S                */
 590 /************************************************************************/
 591 /************************************************************************/
 592
 593 /*****************************************************************************
 594  * edge_interrupt_callback
 595  *      this is the callback function for when we have received data on the
 596  *      interrupt endpoint.
 597  *****************************************************************************/
 598 static void edge_interrupt_callback (struct urb *urb)
 599 {
 600         struct edgeport_serial  *edge_serial = (struct edgeport_serial *)urb->context;
 601         struct edgeport_port *edge_port;
 602         struct usb_serial_port *port;
 603         unsigned char *data = urb->transfer_buffer;
 604         int length = urb->actual_length;
 605         int bytes_avail;
 606         int position;
 607         int txCredits;
 608         int portNumber;
 609         int result;
 610
 611         dbg("%s", __FUNCTION__);
 612
 613         switch (urb->status) {
 614         case 0:
 615                 /* success */
 616                 break;
 617         case -ECONNRESET:
 618         case -ENOENT:
 619         case -ESHUTDOWN:
 620                 /* this urb is terminated, clean up */
 621                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
 622                 return;
 623         default:
 624                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
 625                 goto exit;
 626         }
 627
 628         // process this interrupt-read even if there are no ports open
 629         if (length) {
 630                 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
 631
 632                 if (length > 1) {
 633                         bytes_avail = data[0] | (data[1] << 8);
 634                         if (bytes_avail) {
 635                                 spin_lock(&edge_serial->es_lock);
 636                                 edge_serial->rxBytesAvail += bytes_avail;
 637                                 dbg("%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d", __FUNCTION__, bytes_avail, edge_serial->rxBytesAvail, edge_serial->read_in_progress);
 638
 639                                 if (edge_serial->rxBytesAvail > 0 &&
 640                                     !edge_serial->read_in_progress) {
 641                                         dbg("%s - posting a read", __FUNCTION__);
 642                                         edge_serial->read_in_progress = TRUE;
 643
 644                                         /* we have pending bytes on the bulk in pipe, send a request */
 645                                         edge_serial->read_urb->dev = edge_serial->serial->dev;
 646                                         result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
 647                                         if (result) {
 648                                                 dev_err(&edge_serial->serial->dev->dev, "%s - usb_submit_urb(read bulk) failed with result = %d\n", __FUNCTION__, result);
 649                                                 edge_serial->read_in_progress = FALSE;
 650                                         }
 651                                 }
 652                                 spin_unlock(&edge_serial->es_lock);
 653                         }
 654                 }
 655                 /* grab the txcredits for the ports if available */
 656                 position = 2;
 657                 portNumber = 0;
 658                 while ((position < length) && (portNumber < edge_serial->serial->num_ports)) {
 659                         txCredits = data[position] | (data[position+1] << 8);
 660                         if (txCredits) {
 661                                 port = edge_serial->serial->port[portNumber];
 662                                 edge_port = usb_get_serial_port_data(port);
 663                                 if (edge_port->open) {
 664                                         spin_lock(&edge_port->ep_lock);
 665                                         edge_port->txCredits += txCredits;
 666                                         spin_unlock(&edge_port->ep_lock);
 667                                         dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);
 668
 669                                         /* tell the tty driver that something has changed */
 670                                         if (edge_port->port->tty)
 671                                                 tty_wakeup(edge_port->port->tty);
 672
 673                                         // Since we have more credit, check if more data can be sent
 674                                         send_more_port_data(edge_serial, edge_port);
 675                                 }
 676                         }
 677                         position += 2;
 678                         ++portNumber;
 679                 }
 680         }
 681
 682 exit:
 683         result = usb_submit_urb (urb, GFP_ATOMIC);
 684         if (result) {
 685                 dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result);
 686         }
 687 }
 688
 689
 690 /*****************************************************************************
 691  * edge_bulk_in_callback
 692  *      this is the callback function for when we have received data on the
 693  *      bulk in endpoint.
 694  *****************************************************************************/
 695 static void edge_bulk_in_callback (struct urb *urb)
 696 {
 697         struct edgeport_serial  *edge_serial = (struct edgeport_serial *)urb->context;
 698         unsigned char           *data = urb->transfer_buffer;
 699         int                     status;
 700         __u16                   raw_data_length;
 701
 702         dbg("%s", __FUNCTION__);
 703
 704         if (urb->status) {
 705                 dbg("%s - nonzero read bulk status received: %d", __FUNCTION__, urb->status);
 706                 edge_serial->read_in_progress = FALSE;
 707                 return;
 708         }
 709
 710         if (urb->actual_length == 0) {
 711                 dbg("%s - read bulk callback with no data", __FUNCTION__);
 712                 edge_serial->read_in_progress = FALSE;
 713                 return;
 714         }
 715
 716         raw_data_length = urb->actual_length;
 717
 718         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, raw_data_length, data);
 719
 720         spin_lock(&edge_serial->es_lock);
 721
 722         /* decrement our rxBytes available by the number that we just got */
 723         edge_serial->rxBytesAvail -= raw_data_length;
 724
 725         dbg("%s - Received = %d, rxBytesAvail %d", __FUNCTION__, raw_data_length, edge_serial->rxBytesAvail);
 726
 727         process_rcvd_data (edge_serial, data, urb->actual_length);
 728
 729         /* check to see if there's any more data for us to read */
 730         if (edge_serial->rxBytesAvail > 0) {
 731                 dbg("%s - posting a read", __FUNCTION__);
 732                 edge_serial->read_urb->dev = edge_serial->serial->dev;
 733                 status = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC);
 734                 if (status) {
 735                         dev_err(&urb->dev->dev, "%s - usb_submit_urb(read bulk) failed, status = %d\n", __FUNCTION__, status);
 736                         edge_serial->read_in_progress = FALSE;
 737                 }
 738         } else {
 739                 edge_serial->read_in_progress = FALSE;
 740         }
 741
 742         spin_unlock(&edge_serial->es_lock);
 743 }
 744
 745
 746 /*****************************************************************************
 747  * edge_bulk_out_data_callback
 748  *      this is the callback function for when we have finished sending serial data
 749  *      on the bulk out endpoint.
 750  *****************************************************************************/
 751 static void edge_bulk_out_data_callback (struct urb *urb)
 752 {
 753         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
 754         struct tty_struct *tty;
 755
 756         dbg("%s", __FUNCTION__);
 757
 758         if (urb->status) {
 759                 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
 760         }
 761
 762         tty = edge_port->port->tty;
 763
 764         if (tty && edge_port->open) {
 765                 /* let the tty driver wakeup if it has a special write_wakeup function */
 766                 tty_wakeup(tty);
 767         }
 768
 769         // Release the Write URB
 770         edge_port->write_in_progress = FALSE;
 771
 772         // Check if more data needs to be sent
 773         send_more_port_data((struct edgeport_serial *)(usb_get_serial_data(edge_port->port->serial)), edge_port);
 774 }
 775
 776
 777 /*****************************************************************************
 778  * BulkOutCmdCallback
 779  *      this is the callback function for when we have finished sending a command
 780  *      on the bulk out endpoint.
 781  *****************************************************************************/
 782 static void edge_bulk_out_cmd_callback (struct urb *urb)
 783 {
 784         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
 785         struct tty_struct *tty;
 786         int status = urb->status;
 787
 788         dbg("%s", __FUNCTION__);
 789
 790         CmdUrbs--;
 791         dbg("%s - FREE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
 792
 793
 794         /* clean up the transfer buffer */
 795         kfree(urb->transfer_buffer);
 796
 797         /* Free the command urb */
 798         usb_free_urb (urb);
 799
 800         if (status) {
 801                 dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, status);
 802                 return;
 803         }
 804
 805         /* Get pointer to tty */
 806         tty = edge_port->port->tty;
 807
 808         /* tell the tty driver that something has changed */
 809         if (tty && edge_port->open)
 810                 tty_wakeup(tty);
 811
 812         /* we have completed the command */
 813         edge_port->commandPending = FALSE;
 814         wake_up(&edge_port->wait_command);
 815 }
 816
 817
 818 /*****************************************************************************
 819  * Driver tty interface functions
 820  *****************************************************************************/
 821
 822 /*****************************************************************************
 823  * SerialOpen
 824  *      this function is called by the tty driver when a port is opened
 825  *      If successful, we return 0
 826  *      Otherwise we return a negative error number.
 827  *****************************************************************************/
 828 static int edge_open (struct usb_serial_port *port, struct file * filp)
 829 {
 830         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
 831         struct usb_serial *serial;
 832         struct edgeport_serial *edge_serial;
 833         int response;
 834
 835         dbg("%s - port %d", __FUNCTION__, port->number);
 836
 837         if (edge_port == NULL)
 838                 return -ENODEV;
 839
 840         if (port->tty)
 841                 port->tty->low_latency = low_latency;
 842
 843         /* see if we've set up our endpoint info yet (can't set it up in edge_startup
 844            as the structures were not set up at that time.) */
 845         serial = port->serial;
 846         edge_serial = usb_get_serial_data(serial);
 847         if (edge_serial == NULL) {
 848                 return -ENODEV;
 849         }
 850         if (edge_serial->interrupt_in_buffer == NULL) {
 851                 struct usb_serial_port *port0 = serial->port[0];
 852
 853                 /* not set up yet, so do it now */
 854                 edge_serial->interrupt_in_buffer = port0->interrupt_in_buffer;
 855                 edge_serial->interrupt_in_endpoint = port0->interrupt_in_endpointAddress;
 856                 edge_serial->interrupt_read_urb = port0->interrupt_in_urb;
 857                 edge_serial->bulk_in_buffer = port0->bulk_in_buffer;
 858                 edge_serial->bulk_in_endpoint = port0->bulk_in_endpointAddress;
 859                 edge_serial->read_urb = port0->read_urb;
 860                 edge_serial->bulk_out_endpoint = port0->bulk_out_endpointAddress;
 861
 862                 /* set up our interrupt urb */
 863                 usb_fill_int_urb(edge_serial->interrupt_read_urb,
 864                                  serial->dev,
 865                                  usb_rcvintpipe(serial->dev,
 866                                                 port0->interrupt_in_endpointAddress),
 867                                  port0->interrupt_in_buffer,
 868                                  edge_serial->interrupt_read_urb->transfer_buffer_length,
 869                                  edge_interrupt_callback, edge_serial,
 870                                  edge_serial->interrupt_read_urb->interval);
 871
 872                 /* set up our bulk in urb */
 873                 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev,
 874                                   usb_rcvbulkpipe(serial->dev,
 875                                                   port0->bulk_in_endpointAddress),
 876                                   port0->bulk_in_buffer,
 877                                   edge_serial->read_urb->transfer_buffer_length,
 878                                   edge_bulk_in_callback, edge_serial);
 879                 edge_serial->read_in_progress = FALSE;
 880
 881                 /* start interrupt read for this edgeport
 882                  * this interrupt will continue as long as the edgeport is connected */
 883                 response = usb_submit_urb (edge_serial->interrupt_read_urb, GFP_KERNEL);
 884                 if (response) {
 885                         dev_err(&port->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, response);
 886                 }
 887         }
 888
 889         /* initialize our wait queues */
 890         init_waitqueue_head(&edge_port->wait_open);
 891         init_waitqueue_head(&edge_port->wait_chase);
 892         init_waitqueue_head(&edge_port->delta_msr_wait);
 893         init_waitqueue_head(&edge_port->wait_command);
 894
 895         /* initialize our icount structure */
 896         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
 897
 898         /* initialize our port settings */
 899         edge_port->txCredits            = 0;                    /* Can't send any data yet */
 900         edge_port->shadowMCR            = MCR_MASTER_IE;        /* Must always set this bit to enable ints! */
 901         edge_port->chaseResponsePending = FALSE;
 902
 903         /* send a open port command */
 904         edge_port->openPending = TRUE;
 905         edge_port->open        = FALSE;
 906         response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);
 907
 908         if (response < 0) {
 909                 dev_err(&port->dev, "%s - error sending open port command\n", __FUNCTION__);
 910                 edge_port->openPending = FALSE;
 911                 return -ENODEV;
 912         }
 913
 914         /* now wait for the port to be completely opened */
 915         wait_event_timeout(edge_port->wait_open, (edge_port->openPending != TRUE), OPEN_TIMEOUT);
 916
 917         if (edge_port->open == FALSE) {
 918                 /* open timed out */
 919                 dbg("%s - open timedout", __FUNCTION__);
 920                 edge_port->openPending = FALSE;
 921                 return -ENODEV;
 922         }
 923
 924         /* create the txfifo */
 925         edge_port->txfifo.head  = 0;
 926         edge_port->txfifo.tail  = 0;
 927         edge_port->txfifo.count = 0;
 928         edge_port->txfifo.size  = edge_port->maxTxCredits;
 929         edge_port->txfifo.fifo  = kmalloc (edge_port->maxTxCredits, GFP_KERNEL);
 930
 931         if (!edge_port->txfifo.fifo) {
 932                 dbg("%s - no memory", __FUNCTION__);
 933                 edge_close (port, filp);
 934                 return -ENOMEM;
 935         }
 936
 937         /* Allocate a URB for the write */
 938         edge_port->write_urb = usb_alloc_urb (0, GFP_KERNEL);
 939         edge_port->write_in_progress = FALSE;
 940
 941         if (!edge_port->write_urb) {
 942                 dbg("%s - no memory", __FUNCTION__);
 943                 edge_close (port, filp);
 944                 return -ENOMEM;
 945         }
 946
 947         dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits);
 948
 949         dbg("%s exited", __FUNCTION__);
 950
 951         return 0;
 952 }
 953
 954
 955 /************************************************************************
 956  *
 957  * block_until_chase_response
 958  *
 959  *      This function will block the close until one of the following:
 960  *              1. Response to our Chase comes from Edgeport
 961  *              2. A timout of 10 seconds without activity has expired
 962  *                 (1K of Edgeport data @ 2400 baud ==> 4 sec to empty)
 963  *
 964  ************************************************************************/
 965 static void block_until_chase_response(struct edgeport_port *edge_port)
 966 {
 967         DEFINE_WAIT(wait);
 968         __u16 lastCredits;
 969         int timeout = 1*HZ;
 970         int loop = 10;
 971
 972         while (1) {
 973                 // Save Last credits
 974                 lastCredits = edge_port->txCredits;
 975
 976                 // Did we get our Chase response
 977                 if (edge_port->chaseResponsePending == FALSE) {
 978                         dbg("%s - Got Chase Response", __FUNCTION__);
 979
 980                         // did we get all of our credit back?
 981                         if (edge_port->txCredits == edge_port->maxTxCredits ) {
 982                                 dbg("%s - Got all credits", __FUNCTION__);
 983                                 return;
 984                         }
 985                 }
 986
 987                 // Block the thread for a while
 988                 prepare_to_wait(&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE);
 989                 schedule_timeout(timeout);
 990                 finish_wait(&edge_port->wait_chase, &wait);
 991
 992                 if (lastCredits == edge_port->txCredits) {
 993                         // No activity.. count down.
 994                         loop--;
 995                         if (loop == 0) {
 996                                 edge_port->chaseResponsePending = FALSE;
 997                                 dbg("%s - Chase TIMEOUT", __FUNCTION__);
 998                                 return;
 999                         }
1000                 } else {
1001                         // Reset timout value back to 10 seconds
1002                         dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);
1003                         loop = 10;
1004                 }
1005         }
1006 }
1007
1008
1009 /************************************************************************
1010  *
1011  * block_until_tx_empty
1012  *
1013  *      This function will block the close until one of the following:
1014  *              1. TX count are 0
1015  *              2. The edgeport has stopped
1016  *              3. A timout of 3 seconds without activity has expired
1017  *
1018  ************************************************************************/
1019 static void block_until_tx_empty (struct edgeport_port *edge_port)
1020 {
1021         DEFINE_WAIT(wait);
1022         struct TxFifo *fifo = &edge_port->txfifo;
1023         __u32 lastCount;
1024         int timeout = HZ/10;
1025         int loop = 30;
1026
1027         while (1) {
1028                 // Save Last count
1029                 lastCount = fifo->count;
1030
1031                 // Is the Edgeport Buffer empty?
1032                 if (lastCount == 0) {
1033                         dbg("%s - TX Buffer Empty", __FUNCTION__);
1034                         return;
1035                 }
1036
1037                 // Block the thread for a while
1038                 prepare_to_wait (&edge_port->wait_chase, &wait, TASK_UNINTERRUPTIBLE);
1039                 schedule_timeout(timeout);
1040                 finish_wait(&edge_port->wait_chase, &wait);
1041
1042                 dbg("%s wait", __FUNCTION__);
1043
1044                 if (lastCount == fifo->count) {
1045                         // No activity.. count down.
1046                         loop--;
1047                         if (loop == 0) {
1048                                 dbg("%s - TIMEOUT", __FUNCTION__);
1049                                 return;
1050                         }
1051                 } else {
1052                         // Reset timout value back to seconds
1053                         loop = 30;
1054                 }
1055         }
1056 }
1057
1058
1059 /*****************************************************************************
1060  * edge_close
1061  *      this function is called by the tty driver when a port is closed
1062  *****************************************************************************/
1063 static void edge_close (struct usb_serial_port *port, struct file * filp)
1064 {
1065         struct edgeport_serial *edge_serial;
1066         struct edgeport_port *edge_port;
1067         int status;
1068
1069         dbg("%s - port %d", __FUNCTION__, port->number);
1070
1071         edge_serial = usb_get_serial_data(port->serial);
1072         edge_port = usb_get_serial_port_data(port);
1073         if ((edge_serial == NULL) || (edge_port == NULL))
1074                 return;
1075
1076         // block until tx is empty
1077         block_until_tx_empty(edge_port);
1078
1079         edge_port->closePending = TRUE;
1080
1081         if ((!edge_serial->is_epic) ||
1082             ((edge_serial->is_epic) &&
1083              (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1084                 /* flush and chase */
1085                 edge_port->chaseResponsePending = TRUE;
1086
1087                 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1088                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1089                 if (status == 0) {
1090                         // block until chase finished
1091                         block_until_chase_response(edge_port);
1092                 } else {
1093                         edge_port->chaseResponsePending = FALSE;
1094                 }
1095         }
1096
1097         if ((!edge_serial->is_epic) ||
1098             ((edge_serial->is_epic) &&
1099              (edge_serial->epic_descriptor.Supports.IOSPClose))) {
1100                /* close the port */
1101                 dbg("%s - Sending IOSP_CMD_CLOSE_PORT", __FUNCTION__);
1102                 send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);
1103         }
1104
1105         //port->close = TRUE;
1106         edge_port->closePending = FALSE;
1107         edge_port->open = FALSE;
1108         edge_port->openPending = FALSE;
1109
1110         usb_kill_urb(edge_port->write_urb);
1111
1112         if (edge_port->write_urb) {
1113                 /* if this urb had a transfer buffer already (old transfer) free it */
1114                 kfree(edge_port->write_urb->transfer_buffer);
1115                 usb_free_urb(edge_port->write_urb);
1116                 edge_port->write_urb = NULL;
1117         }
1118         kfree(edge_port->txfifo.fifo);
1119         edge_port->txfifo.fifo = NULL;
1120
1121         dbg("%s exited", __FUNCTION__);
1122 }
1123
1124 /*****************************************************************************
1125  * SerialWrite
1126  *      this function is called by the tty driver when data should be written to
1127  *      the port.
1128  *      If successful, we return the number of bytes written, otherwise we return
1129  *      a negative error number.
1130  *****************************************************************************/
1131 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
1132 {
1133         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1134         struct TxFifo *fifo;
1135         int copySize;
1136         int bytesleft;
1137         int firsthalf;
1138         int secondhalf;
1139         unsigned long flags;
1140
1141         dbg("%s - port %d", __FUNCTION__, port->number);
1142
1143         if (edge_port == NULL)
1144                 return -ENODEV;
1145
1146         // get a pointer to the Tx fifo
1147         fifo = &edge_port->txfifo;
1148
1149         spin_lock_irqsave(&edge_port->ep_lock, flags);
1150
1151         // calculate number of bytes to put in fifo
1152         copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));
1153
1154         dbg("%s(%d) of %d byte(s) Fifo room  %d -- will copy %d bytes", __FUNCTION__,
1155             port->number, count, edge_port->txCredits - fifo->count, copySize);
1156
1157         /* catch writes of 0 bytes which the tty driver likes to give us, and when txCredits is empty */
1158         if (copySize == 0) {
1159                 dbg("%s - copySize = Zero", __FUNCTION__);
1160                 goto finish_write;
1161         }
1162
1163         // queue the data
1164         // since we can never overflow the buffer we do not have to check for full condition
1165
1166         // the copy is done is two parts -- first fill to the end of the buffer
1167         // then copy the reset from the start of the buffer
1168
1169         bytesleft = fifo->size - fifo->head;
1170         firsthalf = min (bytesleft, copySize);
1171         dbg("%s - copy %d bytes of %d into fifo ", __FUNCTION__, firsthalf, bytesleft);
1172
1173         /* now copy our data */
1174         memcpy(&fifo->fifo[fifo->head], data, firsthalf);
1175         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, firsthalf, &fifo->fifo[fifo->head]);
1176
1177         // update the index and size
1178         fifo->head  += firsthalf;
1179         fifo->count += firsthalf;
1180
1181         // wrap the index
1182         if (fifo->head == fifo->size) {
1183                 fifo->head = 0;
1184         }
1185
1186         secondhalf = copySize-firsthalf;
1187
1188         if (secondhalf) {
1189                 dbg("%s - copy rest of data %d", __FUNCTION__, secondhalf);
1190                 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf);
1191                 usb_serial_debug_data(debug, &port->dev, __FUNCTION__, secondhalf, &fifo->fifo[fifo->head]);
1192                 // update the index and size
1193                 fifo->count += secondhalf;
1194                 fifo->head  += secondhalf;
1195                 // No need to check for wrap since we can not get to end of fifo in this part
1196         }
1197
1198 finish_write:
1199         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1200
1201         send_more_port_data((struct edgeport_serial *)usb_get_serial_data(port->serial), edge_port);
1202
1203         dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fifo->count);
1204
1205         return copySize;
1206 }
1207
1208
1209 /************************************************************************
1210  *
1211  * send_more_port_data()
1212  *
1213  *      This routine attempts to write additional UART transmit data
1214  *      to a port over the USB bulk pipe. It is called (1) when new
1215  *      data has been written to a port's TxBuffer from higher layers
1216  *      (2) when the peripheral sends us additional TxCredits indicating
1217  *      that it can accept more Tx data for a given port; and (3) when
1218  *      a bulk write completes successfully and we want to see if we
1219  *      can transmit more.
1220  *
1221  ************************************************************************/
1222 static void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)
1223 {
1224         struct TxFifo   *fifo = &edge_port->txfifo;
1225         struct urb      *urb;
1226         unsigned char   *buffer;
1227         int             status;
1228         int             count;
1229         int             bytesleft;
1230         int             firsthalf;
1231         int             secondhalf;
1232         unsigned long   flags;
1233
1234         dbg("%s(%d)", __FUNCTION__, edge_port->port->number);
1235
1236         spin_lock_irqsave(&edge_port->ep_lock, flags);
1237
1238         if (edge_port->write_in_progress ||
1239             !edge_port->open             ||
1240             (fifo->count == 0)) {
1241                 dbg("%s(%d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->write_in_progress);
1242                 goto exit_send;
1243         }
1244
1245         // since the amount of data in the fifo will always fit into the
1246         // edgeport buffer we do not need to check the write length
1247
1248         //      Do we have enough credits for this port to make it worthwhile
1249         //      to bother queueing a write. If it's too small, say a few bytes,
1250         //      it's better to wait for more credits so we can do a larger
1251         //      write.
1252         if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits,EDGE_FW_BULK_MAX_PACKET_SIZE)) {
1253                 dbg("%s(%d) Not enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_port->txCredits );
1254                 goto exit_send;
1255         }
1256
1257         // lock this write
1258         edge_port->write_in_progress = TRUE;
1259
1260         // get a pointer to the write_urb
1261         urb = edge_port->write_urb;
1262
1263         /* make sure transfer buffer is freed */
1264         kfree(urb->transfer_buffer);
1265         urb->transfer_buffer = NULL;
1266
1267         /* build the data header for the buffer and port that we are about to send out */
1268         count = fifo->count;
1269         buffer = kmalloc (count+2, GFP_ATOMIC);
1270         if (buffer == NULL) {
1271                 dev_err(&edge_port->port->dev, "%s - no more kernel memory...\n", __FUNCTION__);
1272                 edge_port->write_in_progress = FALSE;
1273                 goto exit_send;
1274         }
1275         buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);
1276         buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);
1277
1278         /* now copy our data */
1279         bytesleft =  fifo->size - fifo->tail;
1280         firsthalf = min (bytesleft, count);
1281         memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf);
1282         fifo->tail  += firsthalf;
1283         fifo->count -= firsthalf;
1284         if (fifo->tail == fifo->size) {
1285                 fifo->tail = 0;
1286         }
1287
1288         secondhalf = count-firsthalf;
1289         if (secondhalf) {
1290                 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], secondhalf);
1291                 fifo->tail  += secondhalf;
1292                 fifo->count -= secondhalf;
1293         }
1294
1295         if (count)
1296                 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, count, &buffer[2]);
1297
1298         /* fill up the urb with all of our data and submit it */
1299         usb_fill_bulk_urb (urb, edge_serial->serial->dev,
1300                        usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
1301                        buffer, count+2, edge_bulk_out_data_callback, edge_port);
1302
1303         /* decrement the number of credits we have by the number we just sent */
1304         edge_port->txCredits -= count;
1305         edge_port->icount.tx += count;
1306
1307         urb->dev = edge_serial->serial->dev;
1308         status = usb_submit_urb(urb, GFP_ATOMIC);
1309         if (status) {
1310                 /* something went wrong */
1311                 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", __FUNCTION__, status);
1312                 edge_port->write_in_progress = FALSE;
1313
1314                 /* revert the credits as something bad happened. */
1315                 edge_port->txCredits += count;
1316                 edge_port->icount.tx -= count;
1317         }
1318         dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->count);
1319
1320 exit_send:
1321         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1322 }
1323
1324
1325 /*****************************************************************************
1326  * edge_write_room
1327  *      this function is called by the tty driver when it wants to know how many
1328  *      bytes of data we can accept for a specific port.
1329  *      If successful, we return the amount of room that we have for this port
1330  *      (the txCredits),
1331  *      Otherwise we return a negative error number.
1332  *****************************************************************************/
1333 static int edge_write_room (struct usb_serial_port *port)
1334 {
1335         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1336         int room;
1337         unsigned long flags;
1338
1339         dbg("%s", __FUNCTION__);
1340
1341         if (edge_port == NULL)
1342                 return -ENODEV;
1343         if (edge_port->closePending == TRUE)
1344                 return -ENODEV;
1345
1346         dbg("%s - port %d", __FUNCTION__, port->number);
1347
1348         if (!edge_port->open) {
1349                 dbg("%s - port not opened", __FUNCTION__);
1350                 return -EINVAL;
1351         }
1352
1353         // total of both buffers is still txCredit
1354         spin_lock_irqsave(&edge_port->ep_lock, flags);
1355         room = edge_port->txCredits - edge_port->txfifo.count;
1356         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1357
1358         dbg("%s - returns %d", __FUNCTION__, room);
1359         return room;
1360 }
1361
1362
1363 /*****************************************************************************
1364  * edge_chars_in_buffer
1365  *      this function is called by the tty driver when it wants to know how many
1366  *      bytes of data we currently have outstanding in the port (data that has
1367  *      been written, but hasn't made it out the port yet)
1368  *      If successful, we return the number of bytes left to be written in the
1369  *      system,
1370  *      Otherwise we return a negative error number.
1371  *****************************************************************************/
1372 static int edge_chars_in_buffer (struct usb_serial_port *port)
1373 {
1374         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1375         int num_chars;
1376         unsigned long flags;
1377
1378         dbg("%s", __FUNCTION__);
1379
1380         if (edge_port == NULL)
1381                 return -ENODEV;
1382         if (edge_port->closePending == TRUE)
1383                 return -ENODEV;
1384
1385         if (!edge_port->open) {
1386                 dbg("%s - port not opened", __FUNCTION__);
1387                 return -EINVAL;
1388         }
1389
1390         spin_lock_irqsave(&edge_port->ep_lock, flags);
1391         num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;
1392         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1393         if (num_chars) {
1394                 dbg("%s(port %d) - returns %d", __FUNCTION__, port->number, num_chars);
1395         }
1396
1397         return num_chars;
1398 }
1399
1400
1401 /*****************************************************************************
1402  * SerialThrottle
1403  *      this function is called by the tty driver when it wants to stop the data
1404  *      being read from the port.
1405  *****************************************************************************/
1406 static void edge_throttle (struct usb_serial_port *port)
1407 {
1408         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1409         struct tty_struct *tty;
1410         int status;
1411
1412         dbg("%s - port %d", __FUNCTION__, port->number);
1413
1414         if (edge_port == NULL)
1415                 return;
1416
1417         if (!edge_port->open) {
1418                 dbg("%s - port not opened", __FUNCTION__);
1419                 return;
1420         }
1421
1422         tty = port->tty;
1423         if (!tty) {
1424                 dbg ("%s - no tty available", __FUNCTION__);
1425                 return;
1426         }
1427
1428         /* if we are implementing XON/XOFF, send the stop character */
1429         if (I_IXOFF(tty)) {
1430                 unsigned char stop_char = STOP_CHAR(tty);
1431                 status = edge_write (port, &stop_char, 1);
1432                 if (status <= 0) {
1433                         return;
1434                 }
1435         }
1436
1437         /* if we are implementing RTS/CTS, toggle that line */
1438         if (tty->termios->c_cflag & CRTSCTS) {
1439                 edge_port->shadowMCR &= ~MCR_RTS;
1440                 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1441                 if (status != 0) {
1442                         return;
1443                 }
1444         }
1445
1446         return;
1447 }
1448
1449
1450 /*****************************************************************************
1451  * edge_unthrottle
1452  *      this function is called by the tty driver when it wants to resume the data
1453  *      being read from the port (called after SerialThrottle is called)
1454  *****************************************************************************/
1455 static void edge_unthrottle (struct usb_serial_port *port)
1456 {
1457         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1458         struct tty_struct *tty;
1459         int status;
1460
1461         dbg("%s - port %d", __FUNCTION__, port->number);
1462
1463         if (edge_port == NULL)
1464                 return;
1465
1466         if (!edge_port->open) {
1467                 dbg("%s - port not opened", __FUNCTION__);
1468                 return;
1469         }
1470
1471         tty = port->tty;
1472         if (!tty) {
1473                 dbg ("%s - no tty available", __FUNCTION__);
1474                 return;
1475         }
1476
1477         /* if we are implementing XON/XOFF, send the start character */
1478         if (I_IXOFF(tty)) {
1479                 unsigned char start_char = START_CHAR(tty);
1480                 status = edge_write (port, &start_char, 1);
1481                 if (status <= 0) {
1482                         return;
1483                 }
1484         }
1485
1486         /* if we are implementing RTS/CTS, toggle that line */
1487         if (tty->termios->c_cflag & CRTSCTS) {
1488                 edge_port->shadowMCR |= MCR_RTS;
1489                 status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1490                 if (status != 0) {
1491                         return;
1492                 }
1493         }
1494
1495         return;
1496 }
1497
1498
1499 /*****************************************************************************
1500  * SerialSetTermios
1501  *      this function is called by the tty driver when it wants to change the termios structure
1502  *****************************************************************************/
1503 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
1504 {
1505         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1506         struct tty_struct *tty = port->tty;
1507         unsigned int cflag;
1508
1509         if (!port->tty || !port->tty->termios) {
1510                 dbg ("%s - no tty or termios", __FUNCTION__);
1511                 return;
1512         }
1513
1514         cflag = tty->termios->c_cflag;
1515         /* check that they really want us to change something */
1516         if (old_termios) {
1517                 if (cflag == old_termios->c_cflag &&
1518                     tty->termios->c_iflag == old_termios->c_iflag) {
1519                         dbg("%s - nothing to change", __FUNCTION__);
1520                         return;
1521                 }
1522         }
1523
1524         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
1525             tty->termios->c_cflag, tty->termios->c_iflag);
1526         if (old_termios) {
1527                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
1528                     old_termios->c_cflag, old_termios->c_iflag);
1529         }
1530
1531         dbg("%s - port %d", __FUNCTION__, port->number);
1532
1533         if (edge_port == NULL)
1534                 return;
1535
1536         if (!edge_port->open) {
1537                 dbg("%s - port not opened", __FUNCTION__);
1538                 return;
1539         }
1540
1541         /* change the port settings to the new ones specified */
1542         change_port_settings (edge_port, old_termios);
1543
1544         return;
1545 }
1546
1547
1548 /*****************************************************************************
1549  * get_lsr_info - get line status register info
1550  *
1551  * Purpose: Let user call ioctl() to get info when the UART physically
1552  *          is emptied.  On bus types like RS485, the transmitter must
1553  *          release the bus after transmitting. This must be done when
1554  *          the transmit shift register is empty, not be done when the
1555  *          transmit holding register is empty.  This functionality
1556  *          allows an RS485 driver to be written in user space.
1557  *****************************************************************************/
1558 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int __user *value)
1559 {
1560         unsigned int result = 0;
1561         unsigned long flags;
1562
1563         spin_lock_irqsave(&edge_port->ep_lock, flags);
1564         if (edge_port->maxTxCredits == edge_port->txCredits &&
1565             edge_port->txfifo.count == 0) {
1566                 dbg("%s -- Empty", __FUNCTION__);
1567                 result = TIOCSER_TEMT;
1568         }
1569         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1570
1571         if (copy_to_user(value, &result, sizeof(int)))
1572                 return -EFAULT;
1573         return 0;
1574 }
1575
1576 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int __user *value)
1577 {
1578         unsigned int result = 0;
1579         struct tty_struct *tty = edge_port->port->tty;
1580
1581         if (!tty)
1582                 return -ENOIOCTLCMD;
1583
1584         result = tty->read_cnt;
1585
1586         dbg("%s(%d) = %d", __FUNCTION__,  edge_port->port->number, result);
1587         if (copy_to_user(value, &result, sizeof(int)))
1588                 return -EFAULT;
1589         //return 0;
1590         return -ENOIOCTLCMD;
1591 }
1592
1593 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
1594 {
1595         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1596         unsigned int mcr;
1597
1598         dbg("%s - port %d", __FUNCTION__, port->number);
1599
1600         mcr = edge_port->shadowMCR;
1601         if (set & TIOCM_RTS)
1602                 mcr |= MCR_RTS;
1603         if (set & TIOCM_DTR)
1604                 mcr |= MCR_DTR;
1605         if (set & TIOCM_LOOP)
1606                 mcr |= MCR_LOOPBACK;
1607
1608         if (clear & TIOCM_RTS)
1609                 mcr &= ~MCR_RTS;
1610         if (clear & TIOCM_DTR)
1611                 mcr &= ~MCR_DTR;
1612         if (clear & TIOCM_LOOP)
1613                 mcr &= ~MCR_LOOPBACK;
1614
1615         edge_port->shadowMCR = mcr;
1616
1617         send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
1618
1619         return 0;
1620 }
1621
1622 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
1623 {
1624         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1625         unsigned int result = 0;
1626         unsigned int msr;
1627         unsigned int mcr;
1628
1629         dbg("%s - port %d", __FUNCTION__, port->number);
1630
1631         msr = edge_port->shadowMSR;
1632         mcr = edge_port->shadowMCR;
1633         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
1634                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
1635                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
1636                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
1637                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
1638                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
1639
1640
1641         dbg("%s -- %x", __FUNCTION__, result);
1642
1643         return result;
1644 }
1645
1646 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
1647 {
1648         struct serial_struct tmp;
1649
1650         if (!retinfo)
1651                 return -EFAULT;
1652
1653         memset(&tmp, 0, sizeof(tmp));
1654
1655         tmp.type                = PORT_16550A;
1656         tmp.line                = edge_port->port->serial->minor;
1657         tmp.port                = edge_port->port->number;
1658         tmp.irq                 = 0;
1659         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
1660         tmp.xmit_fifo_size      = edge_port->maxTxCredits;
1661         tmp.baud_base           = 9600;
1662         tmp.close_delay         = 5*HZ;
1663         tmp.closing_wait        = 30*HZ;
1664 //      tmp.custom_divisor      = state->custom_divisor;
1665 //      tmp.hub6                = state->hub6;
1666 //      tmp.io_type             = state->io_type;
1667
1668         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
1669                 return -EFAULT;
1670         return 0;
1671 }
1672
1673
1674
1675 /*****************************************************************************
1676  * SerialIoctl
1677  *      this function handles any ioctl calls to the driver
1678  *****************************************************************************/
1679 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
1680 {
1681         DEFINE_WAIT(wait);
1682         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1683         struct async_icount cnow;
1684         struct async_icount cprev;
1685         struct serial_icounter_struct icount;
1686
1687         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
1688
1689         switch (cmd) {
1690                 // return number of bytes available
1691                 case TIOCINQ:
1692                         dbg("%s (%d) TIOCINQ", __FUNCTION__,  port->number);
1693                         return get_number_bytes_avail(edge_port, (unsigned int __user *) arg);
1694                         break;
1695
1696                 case TIOCSERGETLSR:
1697                         dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__,  port->number);
1698                         return get_lsr_info(edge_port, (unsigned int __user *) arg);
1699                         return 0;
1700
1701                 case TIOCGSERIAL:
1702                         dbg("%s (%d) TIOCGSERIAL", __FUNCTION__,  port->number);
1703                         return get_serial_info(edge_port, (struct serial_struct __user *) arg);
1704
1705                 case TIOCSSERIAL:
1706                         dbg("%s (%d) TIOCSSERIAL", __FUNCTION__,  port->number);
1707                         break;
1708
1709                 case TIOCMIWAIT:
1710                         dbg("%s (%d) TIOCMIWAIT", __FUNCTION__,  port->number);
1711                         cprev = edge_port->icount;
1712                         while (1) {
1713                                 prepare_to_wait(&edge_port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE);
1714                                 schedule();
1715                                 finish_wait(&edge_port->delta_msr_wait, &wait);
1716                                 /* see if a signal did it */
1717                                 if (signal_pending(current))
1718                                         return -ERESTARTSYS;
1719                                 cnow = edge_port->icount;
1720                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
1721                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
1722                                         return -EIO; /* no change => error */
1723                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
1724                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
1725                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
1726                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
1727                                         return 0;
1728                                 }
1729                                 cprev = cnow;
1730                         }
1731                         /* NOTREACHED */
1732                         break;
1733
1734                 case TIOCGICOUNT:
1735                         cnow = edge_port->icount;
1736                         memset(&icount, 0, sizeof(icount));
1737                         icount.cts = cnow.cts;
1738                         icount.dsr = cnow.dsr;
1739                         icount.rng = cnow.rng;
1740                         icount.dcd = cnow.dcd;
1741                         icount.rx = cnow.rx;
1742                         icount.tx = cnow.tx;
1743                         icount.frame = cnow.frame;
1744                         icount.overrun = cnow.overrun;
1745                         icount.parity = cnow.parity;
1746                         icount.brk = cnow.brk;
1747                         icount.buf_overrun = cnow.buf_overrun;
1748
1749                         dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,  port->number, icount.rx, icount.tx );
1750                         if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
1751                                 return -EFAULT;
1752                         return 0;
1753         }
1754
1755         return -ENOIOCTLCMD;
1756 }
1757
1758
1759 /*****************************************************************************
1760  * SerialBreak
1761  *      this function sends a break to the port
1762  *****************************************************************************/
1763 static void edge_break (struct usb_serial_port *port, int break_state)
1764 {
1765         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1766         struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial);
1767         int status;
1768
1769         if ((!edge_serial->is_epic) ||
1770             ((edge_serial->is_epic) &&
1771              (edge_serial->epic_descriptor.Supports.IOSPChase))) {
1772                 /* flush and chase */
1773                 edge_port->chaseResponsePending = TRUE;
1774
1775                 dbg("%s - Sending IOSP_CMD_CHASE_PORT", __FUNCTION__);
1776                 status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);
1777                 if (status == 0) {
1778                         // block until chase finished
1779                         block_until_chase_response(edge_port);
1780                 } else {
1781                         edge_port->chaseResponsePending = FALSE;
1782                 }
1783         }
1784
1785         if ((!edge_serial->is_epic) ||
1786             ((edge_serial->is_epic) &&
1787              (edge_serial->epic_descriptor.Supports.IOSPSetClrBreak))) {
1788                 if (break_state == -1) {
1789                         dbg("%s - Sending IOSP_CMD_SET_BREAK", __FUNCTION__);
1790                         status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);
1791                 } else {
1792                         dbg("%s - Sending IOSP_CMD_CLEAR_BREAK", __FUNCTION__);
1793                         status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);
1794                 }
1795                 if (status) {
1796                         dbg("%s - error sending break set/clear command.", __FUNCTION__);
1797                 }
1798         }
1799
1800         return;
1801 }
1802
1803
1804 /*****************************************************************************
1805  * process_rcvd_data
1806  *      this function handles the data received on the bulk in pipe.
1807  *****************************************************************************/
1808 static void process_rcvd_data (struct edgeport_serial *edge_serial, unsigned char * buffer, __u16 bufferLength)
1809 {
1810         struct usb_serial_port *port;
1811         struct edgeport_port *edge_port;
1812         struct tty_struct *tty;
1813         __u16 lastBufferLength;
1814         __u16 rxLen;
1815
1816         dbg("%s", __FUNCTION__);
1817
1818         lastBufferLength = bufferLength + 1;
1819
1820         while (bufferLength > 0) {
1821                 /* failsafe incase we get a message that we don't understand */
1822                 if (lastBufferLength == bufferLength) {
1823                         dbg("%s - stuck in loop, exiting it.", __FUNCTION__);
1824                         break;
1825                 }
1826                 lastBufferLength = bufferLength;
1827
1828                 switch (edge_serial->rxState) {
1829                         case EXPECT_HDR1:
1830                                 edge_serial->rxHeader1 = *buffer;
1831                                 ++buffer;
1832                                 --bufferLength;
1833
1834                                 if (bufferLength == 0) {
1835                                         edge_serial->rxState = EXPECT_HDR2;
1836                                         break;
1837                                 }
1838                                 /* otherwise, drop on through */
1839
1840                         case EXPECT_HDR2:
1841                                 edge_serial->rxHeader2 = *buffer;
1842                                 ++buffer;
1843                                 --bufferLength;
1844
1845                                 dbg("%s - Hdr1=%02X Hdr2=%02X", __FUNCTION__, edge_serial->rxHeader1, edge_serial->rxHeader2);
1846
1847                                 // Process depending on whether this header is
1848                                 // data or status
1849
1850                                 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) {
1851                                         // Decode this status header and goto EXPECT_HDR1 (if we
1852                                         // can process the status with only 2 bytes), or goto
1853                                         // EXPECT_HDR3 to get the third byte.
1854
1855                                         edge_serial->rxPort       = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1856                                         edge_serial->rxStatusCode = IOSP_GET_STATUS_CODE(edge_serial->rxHeader1);
1857
1858                                         if (!IOSP_STATUS_IS_2BYTE(edge_serial->rxStatusCode)) {
1859                                                 // This status needs additional bytes. Save what we have
1860                                                 // and then wait for more data.
1861                                                 edge_serial->rxStatusParam = edge_serial->rxHeader2;
1862
1863                                                 edge_serial->rxState = EXPECT_HDR3;
1864                                                 break;
1865                                         }
1866
1867                                         // We have all the header bytes, process the status now
1868                                         process_rcvd_status (edge_serial, edge_serial->rxHeader2, 0);
1869                                         edge_serial->rxState = EXPECT_HDR1;
1870                                         break;
1871                                 } else {
1872                                         edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
1873                                         edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, edge_serial->rxHeader2);
1874
1875                                         dbg("%s - Data for Port %u Len %u", __FUNCTION__, edge_serial->rxPort, edge_serial->rxBytesRemaining);
1876
1877                                         //ASSERT( DevExt->RxPort < DevExt->NumPorts );
1878                                         //ASSERT( DevExt->RxBytesRemaining < IOSP_MAX_DATA_LENGTH );
1879
1880                                         if (bufferLength == 0 ) {
1881                                                 edge_serial->rxState = EXPECT_DATA;
1882                                                 break;
1883                                         }
1884                                         // Else, drop through
1885                                 }
1886
1887                         case EXPECT_DATA:       // Expect data
1888
1889                                 if (bufferLength < edge_serial->rxBytesRemaining) {
1890                                         rxLen = bufferLength;
1891                                         edge_serial->rxState = EXPECT_DATA;     // Expect data to start next buffer
1892                                 } else {
1893                                         // BufLen >= RxBytesRemaining
1894                                         rxLen = edge_serial->rxBytesRemaining;
1895                                         edge_serial->rxState = EXPECT_HDR1;     // Start another header next time
1896                                 }
1897
1898                                 bufferLength -= rxLen;
1899                                 edge_serial->rxBytesRemaining -= rxLen;
1900
1901                                 /* spit this data back into the tty driver if this port is open */
1902                                 if (rxLen) {
1903                                         port = edge_serial->serial->port[edge_serial->rxPort];
1904                                         edge_port = usb_get_serial_port_data(port);
1905                                         if (edge_port->open) {
1906                                                 tty = edge_port->port->tty;
1907                                                 if (tty) {
1908                                                         dbg("%s - Sending %d bytes to TTY for port %d", __FUNCTION__, rxLen, edge_serial->rxPort);
1909                                                         edge_tty_recv(&edge_serial->serial->dev->dev, tty, buffer, rxLen);
1910                                                 }
1911                                                 edge_port->icount.rx += rxLen;
1912                                         }
1913                                         buffer += rxLen;
1914                                 }
1915
1916                                 break;
1917
1918                         case EXPECT_HDR3:                       // Expect 3rd byte of status header
1919                                 edge_serial->rxHeader3 = *buffer;
1920                                 ++buffer;
1921                                 --bufferLength;
1922
1923                                 // We have all the header bytes, process the status now
1924                                 process_rcvd_status (edge_serial, edge_serial->rxStatusParam, edge_serial->rxHeader3);
1925                                 edge_serial->rxState = EXPECT_HDR1;
1926                                 break;
1927
1928                 }
1929         }
1930 }
1931
1932
1933 /*****************************************************************************
1934  * process_rcvd_status
1935  *      this function handles the any status messages received on the bulk in pipe.
1936  *****************************************************************************/
1937 static void process_rcvd_status (struct edgeport_serial *edge_serial, __u8 byte2, __u8 byte3)
1938 {
1939         struct usb_serial_port *port;
1940         struct edgeport_port *edge_port;
1941         __u8 code = edge_serial->rxStatusCode;
1942
1943         /* switch the port pointer to the one being currently talked about */
1944         port = edge_serial->serial->port[edge_serial->rxPort];
1945         edge_port = usb_get_serial_port_data(port);
1946         if (edge_port == NULL) {
1947                 dev_err(&edge_serial->serial->dev->dev, "%s - edge_port == NULL for port %d\n", __FUNCTION__, edge_serial->rxPort);
1948                 return;
1949         }
1950
1951         dbg("%s - port %d", __FUNCTION__, edge_serial->rxPort);
1952
1953         if (code == IOSP_EXT_STATUS) {
1954                 switch (byte2) {
1955                         case IOSP_EXT_STATUS_CHASE_RSP:
1956                                 // we want to do EXT status regardless of port open/closed
1957                                 dbg("%s - Port %u EXT CHASE_RSP Data = %02x", __FUNCTION__, edge_serial->rxPort, byte3 );
1958                                 // Currently, the only EXT_STATUS is Chase, so process here instead of one more call
1959                                 // to one more subroutine. If/when more EXT_STATUS, there'll be more work to do.
1960                                 // Also, we currently clear flag and close the port regardless of content of above's Byte3.
1961                                 // We could choose to do something else when Byte3 says Timeout on Chase from Edgeport,
1962                                 // like wait longer in block_until_chase_response, but for now we don't.
1963                                 edge_port->chaseResponsePending = FALSE;
1964                                 wake_up (&edge_port->wait_chase);
1965                                 return;
1966
1967                         case IOSP_EXT_STATUS_RX_CHECK_RSP:
1968                                 dbg("%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", __FUNCTION__, edge_serial->rxPort, byte3 );
1969                                 //Port->RxCheckRsp = TRUE;
1970                                 return;
1971                 }
1972         }
1973
1974         if (code == IOSP_STATUS_OPEN_RSP) {
1975                 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);
1976                 edge_port->maxTxCredits = edge_port->txCredits;
1977                 dbg("%s - Port %u Open Response Inital MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);
1978                 handle_new_msr (edge_port, byte2);
1979
1980                 /* send the current line settings to the port so we are in sync with any further termios calls */
1981                 if (edge_port->port->tty)
1982                         change_port_settings (edge_port, edge_port->port->tty->termios);
1983
1984                 /* we have completed the open */
1985                 edge_port->openPending = FALSE;
1986                 edge_port->open = TRUE;
1987                 wake_up(&edge_port->wait_open);
1988                 return;
1989         }
1990
1991         // If port is closed, silently discard all rcvd status. We can
1992         // have cases where buffered status is received AFTER the close
1993         // port command is sent to the Edgeport.
1994         if ((!edge_port->open ) || (edge_port->closePending)) {
1995                 return;
1996         }
1997
1998         switch (code) {
1999                 // Not currently sent by Edgeport
2000                 case IOSP_STATUS_LSR:
2001                         dbg("%s - Port %u LSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2002                         handle_new_lsr (edge_port, FALSE, byte2, 0);
2003                         break;
2004
2005                 case IOSP_STATUS_LSR_DATA:
2006                         dbg("%s - Port %u LSR Status = %02x, Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2007                         // byte2 is LSR Register
2008                         // byte3 is broken data byte
2009                         handle_new_lsr (edge_port, TRUE, byte2, byte3);
2010                         break;
2011                         //
2012                         //      case IOSP_EXT_4_STATUS:
2013                         //              dbg("%s - Port %u LSR Status = %02x Data = %02x", __FUNCTION__, edge_serial->rxPort, byte2, byte3);
2014                         //              break;
2015                         //
2016                 case IOSP_STATUS_MSR:
2017                         dbg("%s - Port %u MSR Status = %02x", __FUNCTION__, edge_serial->rxPort, byte2);
2018
2019                         // Process this new modem status and generate appropriate
2020                         // events, etc, based on the new status. This routine
2021                         // also saves the MSR in Port->ShadowMsr.
2022                         handle_new_msr(edge_port, byte2);
2023                         break;
2024
2025                 default:
2026                         dbg("%s - Unrecognized IOSP status code %u\n", __FUNCTION__, code);
2027                         break;
2028         }
2029
2030         return;
2031 }
2032
2033
2034 /*****************************************************************************
2035  * edge_tty_recv
2036  *      this function passes data on to the tty flip buffer
2037  *****************************************************************************/
2038 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
2039 {
2040         int cnt;
2041
2042         do {
2043                 cnt = tty_buffer_request_room(tty, length);
2044                 if (cnt < length) {
2045                         dev_err(dev, "%s - dropping data, %d bytes lost\n",
2046                                         __FUNCTION__, length - cnt);
2047                         if(cnt == 0)
2048                                 break;
2049                 }
2050                 tty_insert_flip_string(tty, data, cnt);
2051                 data += cnt;
2052                 length -= cnt;
2053         } while (length > 0);
2054
2055         tty_flip_buffer_push(tty);
2056 }
2057
2058
2059 /*****************************************************************************
2060  * handle_new_msr
2061  *      this function handles any change to the msr register for a port.
2062  *****************************************************************************/
2063 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)
2064 {
2065         struct  async_icount *icount;
2066
2067         dbg("%s %02x", __FUNCTION__, newMsr);
2068
2069         if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
2070                 icount = &edge_port->icount;
2071
2072                 /* update input line counters */
2073                 if (newMsr & EDGEPORT_MSR_DELTA_CTS) {
2074                         icount->cts++;
2075                 }
2076                 if (newMsr & EDGEPORT_MSR_DELTA_DSR) {
2077                         icount->dsr++;
2078                 }
2079                 if (newMsr & EDGEPORT_MSR_DELTA_CD) {
2080                         icount->dcd++;
2081                 }
2082                 if (newMsr & EDGEPORT_MSR_DELTA_RI) {
2083                         icount->rng++;
2084                 }
2085                 wake_up_interruptible(&edge_port->delta_msr_wait);
2086         }
2087
2088         /* Save the new modem status */
2089         edge_port->shadowMSR = newMsr & 0xf0;
2090
2091         return;
2092 }
2093
2094
2095 /*****************************************************************************
2096  * handle_new_lsr
2097  *      this function handles any change to the lsr register for a port.
2098  *****************************************************************************/
2099 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)
2100 {
2101         __u8    newLsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
2102         struct  async_icount *icount;
2103
2104         dbg("%s - %02x", __FUNCTION__, newLsr);
2105
2106         edge_port->shadowLSR = lsr;
2107
2108         if (newLsr & LSR_BREAK) {
2109                 //
2110                 // Parity and Framing errors only count if they
2111                 // occur exclusive of a break being
2112                 // received.
2113                 //
2114                 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
2115         }
2116
2117         /* Place LSR data byte into Rx buffer */
2118         if (lsrData && edge_port->port->tty)
2119                 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
2120
2121         /* update input line counters */
2122         icount = &edge_port->icount;
2123         if (newLsr & LSR_BREAK) {
2124                 icount->brk++;
2125         }
2126         if (newLsr & LSR_OVER_ERR) {
2127                 icount->overrun++;
2128         }
2129         if (newLsr & LSR_PAR_ERR) {
2130                 icount->parity++;
2131         }
2132         if (newLsr & LSR_FRM_ERR) {
2133                 icount->frame++;
2134         }
2135
2136         return;
2137 }
2138
2139
2140 /****************************************************************************
2141  * sram_write
2142  *      writes a number of bytes to the Edgeport device's sram starting at the
2143  *      given address.
2144  *      If successful returns the number of bytes written, otherwise it returns
2145  *      a negative error number of the problem.
2146  ****************************************************************************/
2147 static int sram_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2148 {
2149         int result;
2150         __u16 current_length;
2151         unsigned char *transfer_buffer;
2152
2153         dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2154
2155         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2156         if (!transfer_buffer) {
2157                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2158                 return -ENOMEM;
2159         }
2160
2161         /* need to split these writes up into 64 byte chunks */
2162         result = 0;
2163         while (length > 0) {
2164                 if (length > 64) {
2165                         current_length = 64;
2166                 } else {
2167                         current_length = length;
2168                 }
2169 //              dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2170                 memcpy (transfer_buffer, data, current_length);
2171                 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_RAM,
2172                                           0x40, addr, extAddr, transfer_buffer, current_length, 300);
2173                 if (result < 0)
2174                         break;
2175                 length -= current_length;
2176                 addr += current_length;
2177                 data += current_length;
2178         }
2179
2180         kfree (transfer_buffer);
2181         return result;
2182 }
2183
2184
2185 /****************************************************************************
2186  * rom_write
2187  *      writes a number of bytes to the Edgeport device's ROM starting at the
2188  *      given address.
2189  *      If successful returns the number of bytes written, otherwise it returns
2190  *      a negative error number of the problem.
2191  ****************************************************************************/
2192 static int rom_write (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2193 {
2194         int result;
2195         __u16 current_length;
2196         unsigned char *transfer_buffer;
2197
2198 //      dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2199
2200         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2201         if (!transfer_buffer) {
2202                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2203                 return -ENOMEM;
2204         }
2205
2206         /* need to split these writes up into 64 byte chunks */
2207         result = 0;
2208         while (length > 0) {
2209                 if (length > 64) {
2210                         current_length = 64;
2211                 } else {
2212                         current_length = length;
2213                 }
2214 //              dbg("%s - writing %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2215                 memcpy (transfer_buffer, data, current_length);
2216                 result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), USB_REQUEST_ION_WRITE_ROM,
2217                                           0x40, addr, extAddr, transfer_buffer, current_length, 300);
2218                 if (result < 0)
2219                         break;
2220                 length -= current_length;
2221                 addr += current_length;
2222                 data += current_length;
2223         }
2224
2225         kfree (transfer_buffer);
2226         return result;
2227 }
2228
2229
2230 /****************************************************************************
2231  * rom_read
2232  *      reads a number of bytes from the Edgeport device starting at the given
2233  *      address.
2234  *      If successful returns the number of bytes read, otherwise it returns
2235  *      a negative error number of the problem.
2236  ****************************************************************************/
2237 static int rom_read (struct usb_serial *serial, __u16 extAddr, __u16 addr, __u16 length, __u8 *data)
2238 {
2239         int result;
2240         __u16 current_length;
2241         unsigned char *transfer_buffer;
2242
2243         dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, length);
2244
2245         transfer_buffer =  kmalloc (64, GFP_KERNEL);
2246         if (!transfer_buffer) {
2247                 dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 64);
2248                 return -ENOMEM;
2249         }
2250
2251         /* need to split these reads up into 64 byte chunks */
2252         result = 0;
2253         while (length > 0) {
2254                 if (length > 64) {
2255                         current_length = 64;
2256                 } else {
2257                         current_length = length;
2258                 }
2259 //              dbg("%s - %x, %x, %d", __FUNCTION__, extAddr, addr, current_length);
2260                 result = usb_control_msg (serial->dev, usb_rcvctrlpipe(serial->dev, 0), USB_REQUEST_ION_READ_ROM,
2261                                           0xC0, addr, extAddr, transfer_buffer, current_length, 300);
2262                 if (result < 0)
2263                         break;
2264                 memcpy (data, transfer_buffer, current_length);
2265                 length -= current_length;
2266                 addr += current_length;
2267                 data += current_length;
2268         }
2269
2270         kfree (transfer_buffer);
2271         return result;
2272 }
2273
2274
2275 /****************************************************************************
2276  * send_iosp_ext_cmd
2277  *      Is used to send a IOSP message to the Edgeport device
2278  ****************************************************************************/
2279 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)
2280 {
2281         unsigned char   *buffer;
2282         unsigned char   *currentCommand;
2283         int             length = 0;
2284         int             status = 0;
2285
2286         dbg("%s - %d, %d", __FUNCTION__, command, param);
2287
2288         buffer =  kmalloc (10, GFP_ATOMIC);
2289         if (!buffer) {
2290                 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 10);
2291                 return -ENOMEM;
2292         }
2293
2294         currentCommand = buffer;
2295
2296         MAKE_CMD_EXT_CMD (&currentCommand, &length,
2297                           edge_port->port->number - edge_port->port->serial->minor,
2298                           command, param);
2299
2300         status = write_cmd_usb (edge_port, buffer, length);
2301         if (status) {
2302                 /* something bad happened, let's free up the memory */
2303                 kfree(buffer);
2304         }
2305
2306         return status;
2307 }
2308
2309
2310 /*****************************************************************************
2311  * write_cmd_usb
2312  *      this function writes the given buffer out to the bulk write endpoint.
2313  *****************************************************************************/
2314 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)
2315 {
2316         struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2317         int status = 0;
2318         struct urb *urb;
2319         int timeout;
2320
2321         usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, length, buffer);
2322
2323         /* Allocate our next urb */
2324         urb = usb_alloc_urb (0, GFP_ATOMIC);
2325         if (!urb)
2326                 return -ENOMEM;
2327
2328         CmdUrbs++;
2329         dbg("%s - ALLOCATE URB %p (outstanding %d)", __FUNCTION__, urb, CmdUrbs);
2330
2331         usb_fill_bulk_urb (urb, edge_serial->serial->dev,
2332                        usb_sndbulkpipe(edge_serial->serial->dev, edge_serial->bulk_out_endpoint),
2333                        buffer, length, edge_bulk_out_cmd_callback, edge_port);
2334
2335         edge_port->commandPending = TRUE;
2336         status = usb_submit_urb(urb, GFP_ATOMIC);
2337
2338         if (status) {
2339                 /* something went wrong */
2340                 dev_err(&edge_port->port->dev, "%s - usb_submit_urb(write command) failed, status = %d\n", __FUNCTION__, status);
2341                 usb_kill_urb(urb);
2342                 usb_free_urb(urb);
2343                 CmdUrbs--;
2344                 return status;
2345         }
2346
2347         // wait for command to finish
2348         timeout = COMMAND_TIMEOUT;
2349 #if 0
2350         wait_event (&edge_port->wait_command, (edge_port->commandPending == FALSE));
2351
2352         if (edge_port->commandPending == TRUE) {
2353                 /* command timed out */
2354                 dbg("%s - command timed out", __FUNCTION__);
2355                 status = -EINVAL;
2356         }
2357 #endif
2358         return status;
2359 }
2360
2361
2362 /*****************************************************************************
2363  * send_cmd_write_baud_rate
2364  *      this function sends the proper command to change the baud rate of the
2365  *      specified port.
2366  *****************************************************************************/
2367 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)
2368 {
2369         struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2370         unsigned char *cmdBuffer;
2371         unsigned char *currCmd;
2372         int cmdLen = 0;
2373         int divisor;
2374         int status;
2375         unsigned char number = edge_port->port->number - edge_port->port->serial->minor;
2376
2377         if ((!edge_serial->is_epic) ||
2378             ((edge_serial->is_epic) &&
2379              (!edge_serial->epic_descriptor.Supports.IOSPSetBaudRate))) {
2380                 dbg("SendCmdWriteBaudRate - NOT Setting baud rate for port = %d, baud = %d",
2381                     edge_port->port->number, baudRate);
2382                 return 0;
2383         }
2384
2385         dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);
2386
2387         status = calc_baud_rate_divisor (baudRate, &divisor);
2388         if (status) {
2389                 dev_err(&edge_port->port->dev, "%s - bad baud rate\n", __FUNCTION__);
2390                 return status;
2391         }
2392
2393         // Alloc memory for the string of commands.
2394         cmdBuffer =  kmalloc (0x100, GFP_ATOMIC);
2395         if (!cmdBuffer) {
2396                 dev_err(&edge_port->port->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, 0x100);
2397                 return -ENOMEM;
2398         }
2399         currCmd = cmdBuffer;
2400
2401         // Enable access to divisor latch
2402         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE );
2403
2404         // Write the divisor itself
2405         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLL, LOW8 (divisor) );
2406         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, DLM, HIGH8(divisor) );
2407
2408         // Restore original value to disable access to divisor latch
2409         MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);
2410
2411         status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );
2412         if (status) {
2413                 /* something bad happened, let's free up the memory */
2414                 kfree (cmdBuffer);
2415         }
2416
2417         return status;
2418 }
2419
2420
2421 /*****************************************************************************
2422  * calc_baud_rate_divisor
2423  *      this function calculates the proper baud rate divisor for the specified
2424  *      baud rate.
2425  *****************************************************************************/
2426 static int calc_baud_rate_divisor (int baudrate, int *divisor)
2427 {
2428         int i;
2429         __u16 custom;
2430
2431
2432         dbg("%s - %d", __FUNCTION__, baudrate);
2433
2434         for (i = 0; i < ARRAY_SIZE(divisor_table); i++) {
2435                 if ( divisor_table[i].BaudRate == baudrate ) {
2436                         *divisor = divisor_table[i].Divisor;
2437                         return 0;
2438                 }
2439         }
2440
2441         // We have tried all of the standard baud rates
2442         // lets try to calculate the divisor for this baud rate
2443         // Make sure the baud rate is reasonable
2444         if (baudrate > 50 && baudrate < 230400) {
2445                 // get divisor
2446                 custom = (__u16)((230400L + baudrate/2) / baudrate);
2447
2448                 *divisor = custom;
2449
2450                 dbg("%s - Baud %d = %d\n", __FUNCTION__, baudrate, custom);
2451                 return 0;
2452         }
2453
2454         return -1;
2455 }
2456
2457
2458 /*****************************************************************************
2459  * send_cmd_write_uart_register
2460  *      this function builds up a uart register message and sends to to the device.
2461  *****************************************************************************/
2462 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValue)
2463 {
2464         struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2465         unsigned char *cmdBuffer;
2466         unsigned char *currCmd;
2467         unsigned long cmdLen = 0;
2468         int status;
2469
2470         dbg("%s - write to %s register 0x%02x", (regNum == MCR) ? "MCR" : "LCR", __FUNCTION__, regValue);
2471
2472         if ((!edge_serial->is_epic) ||
2473             ((edge_serial->is_epic) &&
2474              (!edge_serial->epic_descriptor.Supports.IOSPWriteMCR) &&
2475              (regNum == MCR))) {
2476                 dbg("SendCmdWriteUartReg - Not writting to MCR Register");
2477                 return 0;
2478         }
2479
2480         if ((!edge_serial->is_epic) ||
2481             ((edge_serial->is_epic) &&
2482              (!edge_serial->epic_descriptor.Supports.IOSPWriteLCR) &&
2483              (regNum == LCR))) {
2484                 dbg ("SendCmdWriteUartReg - Not writting to LCR Register");
2485                 return 0;
2486         }
2487
2488         // Alloc memory for the string of commands.
2489         cmdBuffer = kmalloc (0x10, GFP_ATOMIC);
2490         if (cmdBuffer == NULL ) {
2491                 return -ENOMEM;
2492         }
2493
2494         currCmd = cmdBuffer;
2495
2496         // Build a cmd in the buffer to write the given register
2497         MAKE_CMD_WRITE_REG (&currCmd, &cmdLen,
2498                             edge_port->port->number - edge_port->port->serial->minor,
2499                             regNum, regValue);
2500
2501         status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);
2502         if (status) {
2503                 /* something bad happened, let's free up the memory */
2504                 kfree (cmdBuffer);
2505         }
2506
2507         return status;
2508 }
2509
2510
2511 /*****************************************************************************
2512  * change_port_settings
2513  *      This routine is called to set the UART on the device to match the specified
2514  *      new settings.
2515  *****************************************************************************/
2516 #ifndef CMSPAR
2517 #define CMSPAR 0
2518 #endif
2519 static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
2520 {
2521         struct edgeport_serial *edge_serial = usb_get_serial_data(edge_port->port->serial);
2522         struct tty_struct *tty;
2523         int baud;
2524         unsigned cflag;
2525         __u8 mask = 0xff;
2526         __u8 lData;
2527         __u8 lParity;
2528         __u8 lStop;
2529         __u8 rxFlow;
2530         __u8 txFlow;
2531         int status;
2532
2533         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2534
2535         if ((!edge_port->open) &&
2536             (!edge_port->openPending)) {
2537                 dbg("%s - port not opened", __FUNCTION__);
2538                 return;
2539         }
2540
2541         tty = edge_port->port->tty;
2542         if ((!tty) ||
2543             (!tty->termios)) {
2544                 dbg("%s - no tty structures", __FUNCTION__);
2545                 return;
2546         }
2547
2548         cflag = tty->termios->c_cflag;
2549
2550         switch (cflag & CSIZE) {
2551                 case CS5:   lData = LCR_BITS_5; mask = 0x1f;    dbg("%s - data bits = 5", __FUNCTION__);   break;
2552                 case CS6:   lData = LCR_BITS_6; mask = 0x3f;    dbg("%s - data bits = 6", __FUNCTION__);   break;
2553                 case CS7:   lData = LCR_BITS_7; mask = 0x7f;    dbg("%s - data bits = 7", __FUNCTION__);   break;
2554                 default:
2555                 case CS8:   lData = LCR_BITS_8;                 dbg("%s - data bits = 8", __FUNCTION__);   break;
2556         }
2557
2558         lParity = LCR_PAR_NONE;
2559         if (cflag & PARENB) {
2560                 if (cflag & CMSPAR) {
2561                         if (cflag & PARODD) {
2562                                 lParity = LCR_PAR_MARK;
2563                                 dbg("%s - parity = mark", __FUNCTION__);
2564                         } else {
2565                                 lParity = LCR_PAR_SPACE;
2566                                 dbg("%s - parity = space", __FUNCTION__);
2567                         }
2568                 } else if (cflag & PARODD) {
2569                         lParity = LCR_PAR_ODD;
2570                         dbg("%s - parity = odd", __FUNCTION__);
2571                 } else {
2572                         lParity = LCR_PAR_EVEN;
2573                         dbg("%s - parity = even", __FUNCTION__);
2574                 }
2575         } else {
2576                 dbg("%s - parity = none", __FUNCTION__);
2577         }
2578
2579         if (cflag & CSTOPB) {
2580                 lStop = LCR_STOP_2;
2581                 dbg("%s - stop bits = 2", __FUNCTION__);
2582         } else {
2583                 lStop = LCR_STOP_1;
2584                 dbg("%s - stop bits = 1", __FUNCTION__);
2585         }
2586
2587         /* figure out the flow control settings */
2588         rxFlow = txFlow = 0x00;
2589         if (cflag & CRTSCTS) {
2590                 rxFlow |= IOSP_RX_FLOW_RTS;
2591                 txFlow |= IOSP_TX_FLOW_CTS;
2592                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2593         } else {
2594                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2595         }
2596
2597         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2598         if (I_IXOFF(tty) || I_IXON(tty)) {
2599                 unsigned char stop_char  = STOP_CHAR(tty);
2600                 unsigned char start_char = START_CHAR(tty);
2601
2602                 if ((!edge_serial->is_epic) ||
2603                     ((edge_serial->is_epic) &&
2604                      (edge_serial->epic_descriptor.Supports.IOSPSetXChar))) {
2605                         send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XON_CHAR, start_char);
2606                         send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);
2607                 }
2608
2609                 /* if we are implementing INBOUND XON/XOFF */
2610                 if (I_IXOFF(tty)) {
2611                         rxFlow |= IOSP_RX_FLOW_XON_XOFF;
2612                         dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2613                 } else {
2614                         dbg("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2615                 }
2616
2617                 /* if we are implementing OUTBOUND XON/XOFF */
2618                 if (I_IXON(tty)) {
2619                         txFlow |= IOSP_TX_FLOW_XON_XOFF;
2620                         dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", __FUNCTION__, start_char, stop_char);
2621                 } else {
2622                         dbg("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2623                 }
2624         }
2625
2626         /* Set flow control to the configured value */
2627         if ((!edge_serial->is_epic) ||
2628             ((edge_serial->is_epic) &&
2629              (edge_serial->epic_descriptor.Supports.IOSPSetRxFlow)))
2630                 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);
2631         if ((!edge_serial->is_epic) ||
2632             ((edge_serial->is_epic) &&
2633              (edge_serial->epic_descriptor.Supports.IOSPSetTxFlow)))
2634                 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);
2635
2636
2637         edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
2638         edge_port->shadowLCR |= (lData | lParity | lStop);
2639
2640         edge_port->validDataMask = mask;
2641
2642         /* Send the updated LCR value to the EdgePort */
2643         status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);
2644         if (status != 0) {
2645                 return;
2646         }
2647
2648         /* set up the MCR register and send it to the EdgePort */
2649         edge_port->shadowMCR = MCR_MASTER_IE;
2650         if (cflag & CBAUD) {
2651                 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);
2652         }
2653         status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);
2654         if (status != 0) {
2655                 return;
2656         }
2657
2658         /* Determine divisor based on baud rate */
2659         baud = tty_get_baud_rate(tty);
2660         if (!baud) {
2661                 /* pick a default, any default... */
2662                 baud = 9600;
2663         }
2664
2665         dbg("%s - baud rate = %d", __FUNCTION__, baud);
2666         status = send_cmd_write_baud_rate (edge_port, baud);
2667
2668         return;
2669 }
2670
2671
2672 /****************************************************************************
2673  * unicode_to_ascii
2674  *      Turns a string from Unicode into ASCII.
2675  *      Doesn't do a good job with any characters that are outside the normal
2676  *      ASCII range, but it's only for debugging...
2677  *      NOTE: expects the unicode in LE format
2678  ****************************************************************************/
2679 static void unicode_to_ascii(char *string, int buflen, __le16 *unicode, int unicode_size)
2680 {
2681         int i;
2682
2683         if (buflen <= 0)        /* never happens, but... */
2684                 return;
2685         --buflen;               /* space for nul */
2686
2687         for (i = 0; i < unicode_size; i++) {
2688                 if (i >= buflen)
2689                         break;
2690                 string[i] = (char)(le16_to_cpu(unicode[i]));
2691         }
2692         string[i] = 0x00;
2693 }
2694
2695
2696 /****************************************************************************
2697  * get_manufacturing_desc
2698  *      reads in the manufacturing descriptor and stores it into the serial
2699  *      structure.
2700  ****************************************************************************/
2701 static void get_manufacturing_desc (struct edgeport_serial *edge_serial)
2702 {
2703         int response;
2704
2705         dbg("getting manufacturer descriptor");
2706
2707         response = rom_read (edge_serial->serial, (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16,
2708                             (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), EDGE_MANUF_DESC_LEN,
2709                             (__u8 *)(&edge_serial->manuf_descriptor));
2710
2711         if (response < 1) {
2712                 dev_err(&edge_serial->serial->dev->dev, "error in getting manufacturer descriptor\n");
2713         } else {
2714                 char string[30];
2715                 dbg("**Manufacturer Descriptor");
2716                 dbg("  RomSize:        %dK", edge_serial->manuf_descriptor.RomSize);
2717                 dbg("  RamSize:        %dK", edge_serial->manuf_descriptor.RamSize);
2718                 dbg("  CpuRev:         %d", edge_serial->manuf_descriptor.CpuRev);
2719                 dbg("  BoardRev:       %d", edge_serial->manuf_descriptor.BoardRev);
2720                 dbg("  NumPorts:       %d", edge_serial->manuf_descriptor.NumPorts);
2721                 dbg("  DescDate:       %d/%d/%d", edge_serial->manuf_descriptor.DescDate[0], edge_serial->manuf_descriptor.DescDate[1], edge_serial->manuf_descriptor.DescDate[2]+1900);
2722                 unicode_to_ascii(string, sizeof(string),
2723                     edge_serial->manuf_descriptor.SerialNumber,
2724                     edge_serial->manuf_descriptor.SerNumLength/2);
2725                 dbg("  SerialNumber: %s", string);
2726                 unicode_to_ascii(string, sizeof(string),
2727                     edge_serial->manuf_descriptor.AssemblyNumber,
2728                     edge_serial->manuf_descriptor.AssemblyNumLength/2);
2729                 dbg("  AssemblyNumber: %s", string);
2730                 unicode_to_ascii(string, sizeof(string),
2731                     edge_serial->manuf_descriptor.OemAssyNumber,
2732                     edge_serial->manuf_descriptor.OemAssyNumLength/2);
2733                 dbg("  OemAssyNumber:  %s", string);
2734                 dbg("  UartType:       %d", edge_serial->manuf_descriptor.UartType);
2735                 dbg("  IonPid:         %d", edge_serial->manuf_descriptor.IonPid);
2736                 dbg("  IonConfig:      %d", edge_serial->manuf_descriptor.IonConfig);
2737         }
2738 }
2739
2740
2741 /****************************************************************************
2742  * get_boot_desc
2743  *      reads in the bootloader descriptor and stores it into the serial
2744  *      structure.
2745  ****************************************************************************/
2746 static void get_boot_desc (struct edgeport_serial *edge_serial)
2747 {
2748         int response;
2749
2750         dbg("getting boot descriptor");
2751
2752         response = rom_read (edge_serial->serial, (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16,
2753                             (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), EDGE_BOOT_DESC_LEN,
2754                             (__u8 *)(&edge_serial->boot_descriptor));
2755
2756         if (response < 1) {
2757                 dev_err(&edge_serial->serial->dev->dev, "error in getting boot descriptor\n");
2758         } else {
2759                 dbg("**Boot Descriptor:");
2760                 dbg("  BootCodeLength: %d", le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength));
2761                 dbg("  MajorVersion:   %d", edge_serial->boot_descriptor.MajorVersion);
2762                 dbg("  MinorVersion:   %d", edge_serial->boot_descriptor.MinorVersion);
2763                 dbg("  BuildNumber:    %d", le16_to_cpu(edge_serial->boot_descriptor.BuildNumber));
2764                 dbg("  Capabilities:   0x%x", le16_to_cpu(edge_serial->boot_descriptor.Capabilities));
2765                 dbg("  UConfig0:       %d", edge_serial->boot_descriptor.UConfig0);
2766                 dbg("  UConfig1:       %d", edge_serial->boot_descriptor.UConfig1);
2767         }
2768 }
2769
2770
2771 /****************************************************************************
2772  * load_application_firmware
2773  *      This is called to load the application firmware to the device
2774  ****************************************************************************/
2775 static void load_application_firmware (struct edgeport_serial *edge_serial)
2776 {
2777         struct edge_firmware_image_record *record;
2778         unsigned char *firmware;
2779         unsigned char *FirmwareImage;
2780         int ImageSize;
2781         int response;
2782
2783
2784         switch (edge_serial->product_info.iDownloadFile) {
2785                 case EDGE_DOWNLOAD_FILE_I930:
2786                         dbg("downloading firmware version (930) %d.%d.%d",
2787                             OperationalCodeImageVersion_GEN1.MajorVersion,
2788                             OperationalCodeImageVersion_GEN1.MinorVersion,
2789                             OperationalCodeImageVersion_GEN1.BuildNumber);
2790                         firmware = &OperationalCodeImage_GEN1[0];
2791                         FirmwareImage = &OperationalCodeImage_GEN1[0];
2792                         ImageSize = sizeof(OperationalCodeImage_GEN1);
2793                         break;
2794
2795                 case EDGE_DOWNLOAD_FILE_80251:
2796                         dbg("downloading firmware version (80251) %d.%d.%d",
2797                             OperationalCodeImageVersion_GEN2.MajorVersion,
2798                             OperationalCodeImageVersion_GEN2.MinorVersion,
2799                             OperationalCodeImageVersion_GEN2.BuildNumber);
2800                         firmware = &OperationalCodeImage_GEN2[0];
2801                         FirmwareImage = &OperationalCodeImage_GEN2[0];
2802                         ImageSize = sizeof(OperationalCodeImage_GEN2);
2803                         break;
2804
2805                 case EDGE_DOWNLOAD_FILE_NONE:
2806                         dbg     ("No download file specified, skipping download\n");
2807                         return;
2808
2809                 default:
2810                         return;
2811         }
2812
2813
2814         for (;;) {
2815                 record = (struct edge_firmware_image_record *)firmware;
2816                 response = sram_write (edge_serial->serial, le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len), &record->Data[0]);
2817                 if (response < 0) {
2818                         dev_err(&edge_serial->serial->dev->dev, "sram_write failed (%x, %x, %d)\n", le16_to_cpu(record->ExtAddr), le16_to_cpu(record->Addr), le16_to_cpu(record->Len));
2819                         break;
2820                 }
2821                 firmware += sizeof (struct edge_firmware_image_record) + le16_to_cpu(record->Len);
2822                 if (firmware >= &FirmwareImage[ImageSize]) {
2823                         break;
2824                 }
2825         }
2826
2827         dbg("sending exec_dl_code");
2828         response = usb_control_msg (edge_serial->serial->dev,
2829                                     usb_sndctrlpipe(edge_serial->serial->dev, 0),
2830                                     USB_REQUEST_ION_EXEC_DL_CODE,
2831                                     0x40, 0x4000, 0x0001, NULL, 0, 3000);
2832
2833         return;
2834 }
2835
2836
2837 /****************************************************************************
2838  * edge_startup
2839  ****************************************************************************/
2840 static int edge_startup (struct usb_serial *serial)
2841 {
2842         struct edgeport_serial *edge_serial;
2843         struct edgeport_port *edge_port;
2844         struct usb_device *dev;
2845         int i, j;
2846         int response;
2847         int interrupt_in_found;
2848         int bulk_in_found;
2849         int bulk_out_found;
2850         static __u32 descriptor[3] = {  EDGE_COMPATIBILITY_MASK0,
2851                                         EDGE_COMPATIBILITY_MASK1,
2852                                         EDGE_COMPATIBILITY_MASK2 };
2853
2854         dev = serial->dev;
2855
2856         /* create our private serial structure */
2857         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2858         if (edge_serial == NULL) {
2859                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2860                 return -ENOMEM;
2861         }
2862         spin_lock_init(&edge_serial->es_lock);
2863         edge_serial->serial = serial;
2864         usb_set_serial_data(serial, edge_serial);
2865
2866         /* get the name for the device from the device */
2867         i = get_string(dev, dev->descriptor.iManufacturer,
2868             &edge_serial->name[0], MAX_NAME_LEN+1);
2869         edge_serial->name[i++] = ' ';
2870         get_string(dev, dev->descriptor.iProduct,
2871             &edge_serial->name[i], MAX_NAME_LEN+2 - i);
2872
2873         dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name);
2874
2875         /* Read the epic descriptor */
2876         if (get_epic_descriptor(edge_serial) <= 0) {
2877                 /* memcpy descriptor to Supports structures */
2878                 memcpy(&edge_serial->epic_descriptor.Supports, descriptor,
2879                        sizeof(struct edge_compatibility_bits));
2880
2881                 /* get the manufacturing descriptor for this device */
2882                 get_manufacturing_desc (edge_serial);
2883
2884                 /* get the boot descriptor */
2885                 get_boot_desc (edge_serial);
2886
2887                 get_product_info(edge_serial);
2888         }
2889
2890         /* set the number of ports from the manufacturing description */
2891         /* serial->num_ports = serial->product_info.NumPorts; */
2892         if ((!edge_serial->is_epic) &&
2893             (edge_serial->product_info.NumPorts != serial->num_ports)) {
2894                 dev_warn(&serial->dev->dev, "Device Reported %d serial ports "
2895                          "vs. core thinking we have %d ports, email "
2896                          "greg@kroah.com this information.",
2897                          edge_serial->product_info.NumPorts,
2898                          serial->num_ports);
2899         }
2900
2901         dbg("%s - time 1 %ld", __FUNCTION__, jiffies);
2902
2903         /* If not an EPiC device */
2904         if (!edge_serial->is_epic) {
2905                 /* now load the application firmware into this device */
2906                 load_application_firmware (edge_serial);
2907
2908                 dbg("%s - time 2 %ld", __FUNCTION__, jiffies);
2909
2910                 /* Check current Edgeport EEPROM and update if necessary */
2911                 update_edgeport_E2PROM (edge_serial);
2912
2913                 dbg("%s - time 3 %ld", __FUNCTION__, jiffies);
2914
2915                 /* set the configuration to use #1 */
2916 //              dbg("set_configuration 1");
2917 //              usb_set_configuration (dev, 1);
2918         }
2919
2920         /* we set up the pointers to the endpoints in the edge_open function,
2921          * as the structures aren't created yet. */
2922
2923         /* set up our port private structures */
2924         for (i = 0; i < serial->num_ports; ++i) {
2925                 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2926                 if (edge_port == NULL) {
2927                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2928                         for (j = 0; j < i; ++j) {
2929                                 kfree (usb_get_serial_port_data(serial->port[j]));
2930                                 usb_set_serial_port_data(serial->port[j],  NULL);
2931                         }
2932                         usb_set_serial_data(serial, NULL);
2933                         kfree(edge_serial);
2934                         return -ENOMEM;
2935                 }
2936                 memset (edge_port, 0, sizeof(struct edgeport_port));
2937                 spin_lock_init(&edge_port->ep_lock);
2938                 edge_port->port = serial->port[i];
2939                 usb_set_serial_port_data(serial->port[i], edge_port);
2940         }
2941
2942         response = 0;
2943
2944         if (edge_serial->is_epic) {
2945                 /* EPIC thing, set up our interrupt polling now and our read urb, so
2946                  * that the device knows it really is connected. */
2947                 interrupt_in_found = bulk_in_found = bulk_out_found = FALSE;
2948                 for (i = 0; i < serial->interface->altsetting[0].desc.bNumEndpoints; ++i) {
2949                         struct usb_endpoint_descriptor *endpoint;
2950                         int buffer_size;
2951
2952                         endpoint = &serial->interface->altsetting[0].endpoint[i].desc;
2953                         buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
2954                         if ((!interrupt_in_found) &&
2955                             (usb_endpoint_is_int_in(endpoint))) {
2956                                 /* we found a interrupt in endpoint */
2957                                 dbg("found interrupt in");
2958
2959                                 /* not set up yet, so do it now */
2960                                 edge_serial->interrupt_read_urb = usb_alloc_urb(0, GFP_KERNEL);
2961                                 if (!edge_serial->interrupt_read_urb) {
2962                                         err("out of memory");
2963                                         return -ENOMEM;
2964                                 }
2965                                 edge_serial->interrupt_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
2966                                 if (!edge_serial->interrupt_in_buffer) {
2967                                         err("out of memory");
2968                                         usb_free_urb(edge_serial->interrupt_read_urb);
2969                                         return -ENOMEM;
2970                                 }
2971                                 edge_serial->interrupt_in_endpoint = endpoint->bEndpointAddress;
2972
2973                                 /* set up our interrupt urb */
2974                                 usb_fill_int_urb(edge_serial->interrupt_read_urb,
2975                                                  dev,
2976                                                  usb_rcvintpipe(dev, endpoint->bEndpointAddress),
2977                                                  edge_serial->interrupt_in_buffer,
2978                                                  buffer_size,
2979                                                  edge_interrupt_callback,
2980                                                  edge_serial,
2981                                                  endpoint->bInterval);
2982
2983                                 interrupt_in_found = TRUE;
2984                         }
2985
2986                         if ((!bulk_in_found) &&
2987                             (usb_endpoint_is_bulk_in(endpoint))) {
2988                                 /* we found a bulk in endpoint */
2989                                 dbg("found bulk in");
2990
2991                                 /* not set up yet, so do it now */
2992                                 edge_serial->read_urb = usb_alloc_urb(0, GFP_KERNEL);
2993                                 if (!edge_serial->read_urb) {
2994                                         err("out of memory");
2995                                         return -ENOMEM;
2996                                 }
2997                                 edge_serial->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
2998                                 if (!edge_serial->bulk_in_buffer) {
2999                                         err ("out of memory");
3000                                         usb_free_urb(edge_serial->read_urb);
3001                                         return -ENOMEM;
3002                                 }
3003                                 edge_serial->bulk_in_endpoint = endpoint->bEndpointAddress;
3004
3005                                 /* set up our bulk in urb */
3006                                 usb_fill_bulk_urb(edge_serial->read_urb, dev,
3007                                                   usb_rcvbulkpipe(dev, endpoint->bEndpointAddress),
3008                                                   edge_serial->bulk_in_buffer,
3009                                                   endpoint->wMaxPacketSize,
3010                                                   edge_bulk_in_callback,
3011                                                   edge_serial);
3012                                 bulk_in_found = TRUE;
3013                         }
3014
3015                         if ((!bulk_out_found) &&
3016                             (usb_endpoint_is_bulk_out(endpoint))) {
3017                                 /* we found a bulk out endpoint */
3018                                 dbg("found bulk out");
3019                                 edge_serial->bulk_out_endpoint = endpoint->bEndpointAddress;
3020                                 bulk_out_found = TRUE;
3021                         }
3022                 }
3023
3024                 if ((!interrupt_in_found) || (!bulk_in_found) || (!bulk_out_found)) {
3025                         err ("Error - the proper endpoints were not found!");
3026                         return -ENODEV;
3027                 }
3028
3029                 /* start interrupt read for this edgeport this interrupt will
3030                  * continue as long as the edgeport is connected */
3031                 response = usb_submit_urb(edge_serial->interrupt_read_urb, GFP_KERNEL);
3032                 if (response)
3033                         err("%s - Error %d submitting control urb", __FUNCTION__, response);
3034         }
3035         return response;
3036 }
3037
3038
3039 /****************************************************************************
3040  * edge_shutdown
3041  *      This function is called whenever the device is removed from the usb bus.
3042  ****************************************************************************/
3043 static void edge_shutdown (struct usb_serial *serial)
3044 {
3045         struct edgeport_serial *edge_serial = usb_get_serial_data(serial);
3046         int i;
3047
3048         dbg("%s", __FUNCTION__);
3049
3050         /* stop reads and writes on all ports */
3051         for (i=0; i < serial->num_ports; ++i) {
3052                 kfree (usb_get_serial_port_data(serial->port[i]));
3053                 usb_set_serial_port_data(serial->port[i],  NULL);
3054         }
3055         /* free up our endpoint stuff */
3056         if (edge_serial->is_epic) {
3057                 usb_unlink_urb(edge_serial->interrupt_read_urb);
3058                 usb_free_urb(edge_serial->interrupt_read_urb);
3059                 kfree(edge_serial->interrupt_in_buffer);
3060
3061                 usb_unlink_urb(edge_serial->read_urb);
3062                 usb_free_urb(edge_serial->read_urb);
3063                 kfree(edge_serial->bulk_in_buffer);
3064         }
3065
3066         kfree(edge_serial);
3067         usb_set_serial_data(serial, NULL);
3068 }
3069
3070
3071 /****************************************************************************
3072  * edgeport_init
3073  *      This is called by the module subsystem, or on startup to initialize us
3074  ****************************************************************************/
3075 static int __init edgeport_init(void)
3076 {
3077         int retval;
3078
3079         retval = usb_serial_register(&edgeport_2port_device);
3080         if (retval)
3081                 goto failed_2port_device_register;
3082         retval = usb_serial_register(&edgeport_4port_device);
3083         if (retval)
3084                 goto failed_4port_device_register;
3085         retval = usb_serial_register(&edgeport_8port_device);
3086         if (retval)
3087                 goto failed_8port_device_register;
3088         retval = usb_serial_register(&epic_device);
3089         if (retval)
3090                 goto failed_epic_device_register;
3091         retval = usb_register(&io_driver);
3092         if (retval)
3093                 goto failed_usb_register;
3094         info(DRIVER_DESC " " DRIVER_VERSION);
3095         return 0;
3096
3097 failed_usb_register:
3098         usb_serial_deregister(&epic_device);
3099 failed_epic_device_register:
3100         usb_serial_deregister(&edgeport_8port_device);
3101 failed_8port_device_register:
3102         usb_serial_deregister(&edgeport_4port_device);
3103 failed_4port_device_register:
3104         usb_serial_deregister(&edgeport_2port_device);
3105 failed_2port_device_register:
3106         return retval;
3107 }
3108
3109
3110 /****************************************************************************
3111  * edgeport_exit
3112  *      Called when the driver is about to be unloaded.
3113  ****************************************************************************/
3114 static void __exit edgeport_exit (void)
3115 {
3116         usb_deregister (&io_driver);
3117         usb_serial_deregister (&edgeport_2port_device);
3118         usb_serial_deregister (&edgeport_4port_device);
3119         usb_serial_deregister (&edgeport_8port_device);
3120         usb_serial_deregister (&epic_device);
3121 }
3122
3123 module_init(edgeport_init);
3124 module_exit(edgeport_exit);
3125
3126 /* Module information */
3127 MODULE_AUTHOR( DRIVER_AUTHOR );
3128 MODULE_DESCRIPTION( DRIVER_DESC );
3129 MODULE_LICENSE("GPL");
3130
3131 module_param(debug, bool, S_IRUGO | S_IWUSR);
3132 MODULE_PARM_DESC(debug, "Debug enabled or not");
3133
3134 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3135 MODULE_PARM_DESC(low_latency, "Low latency enabled or not");