drivers/usb/serial/io_ti.c

   1 /*
   2  * Edgeport USB Serial Converter driver
   3  *
   4  * Copyright (C) 2000-2002 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  *      EP/1 EP/2 EP/4
  14  *
  15  * Version history:
  16  *
  17  *      July 11, 2002   Removed 4 port device structure since all TI UMP
  18  *                      chips have only 2 ports
  19  *                      David Iacovelli (davidi@ionetworks.com)
  20  *
  21  */
  22
  23 #include <linux/config.h>
  24 #include <linux/kernel.h>
  25 #include <linux/jiffies.h>
  26 #include <linux/errno.h>
  27 #include <linux/init.h>
  28 #include <linux/slab.h>
  29 #include <linux/tty.h>
  30 #include <linux/tty_driver.h>
  31 #include <linux/tty_flip.h>
  32 #include <linux/module.h>
  33 #include <linux/spinlock.h>
  34 #include <linux/serial.h>
  35 #include <linux/ioctl.h>
  36 #include <asm/uaccess.h>
  37 #include <linux/usb.h>
  38 #include "usb-serial.h"
  39 #include "io_16654.h"
  40 #include "io_usbvend.h"
  41 #include "io_ti.h"
  42
  43 static int debug;
  44
  45 /*
  46  * Version Information
  47  */
  48 #define DRIVER_VERSION "v0.2"
  49 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  50 #define DRIVER_DESC "Edgeport USB Serial Driver"
  51
  52
  53 /* firmware image code */
  54 #define IMAGE_VERSION_NAME      PagableOperationalCodeImageVersion
  55 #define IMAGE_ARRAY_NAME        PagableOperationalCodeImage
  56 #define IMAGE_SIZE              PagableOperationalCodeSize
  57 #include "io_fw_down3.h"        /* Define array OperationalCodeImage[] */
  58
  59 #define EPROM_PAGE_SIZE         64
  60
  61
  62 struct edgeport_uart_buf_desc {
  63         __u32 count;            // Number of bytes currently in buffer
  64 };
  65
  66 /* different hardware types */
  67 #define HARDWARE_TYPE_930       0
  68 #define HARDWARE_TYPE_TIUMP     1
  69
  70 // IOCTL_PRIVATE_TI_GET_MODE Definitions
  71 #define TI_MODE_CONFIGURING     0   // Device has not entered start device
  72 #define TI_MODE_BOOT            1   // Staying in boot mode
  73 #define TI_MODE_DOWNLOAD        2   // Made it to download mode
  74 #define TI_MODE_TRANSITIONING   3   // Currently in boot mode but transitioning to download mode
  75
  76
  77 /* Product information read from the Edgeport */
  78 struct product_info
  79 {
  80         int     TiMode;                 // Current TI Mode
  81         __u8    hardware_type;          // Type of hardware
  82 } __attribute__((packed));
  83
  84
  85 struct edgeport_port {
  86         __u16 uart_base;
  87         __u16 dma_address;
  88         __u8 shadow_msr;
  89         __u8 shadow_mcr;
  90         __u8 shadow_lsr;
  91         __u8 lsr_mask;
  92         __u32 ump_read_timeout;         /* Number of miliseconds the UMP will
  93                                            wait without data before completing
  94                                            a read short */
  95         int baud_rate;
  96         int close_pending;
  97         int lsr_event;
  98         struct edgeport_uart_buf_desc tx;
  99         struct async_icount     icount;
 100         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
 101                                                    waiting for msr change to
 102                                                    happen */
 103         struct edgeport_serial  *edge_serial;
 104         struct usb_serial_port  *port;
 105 };
 106
 107 struct edgeport_serial {
 108         struct product_info product_info;
 109         u8 TI_I2C_Type;                 // Type of I2C in UMP
 110         u8 TiReadI2C;                   // Set to TRUE if we have read the I2c in Boot Mode
 111         int num_ports_open;
 112         struct usb_serial *serial;
 113 };
 114
 115
 116 /* Devices that this driver supports */
 117 static struct usb_device_id edgeport_1port_id_table [] = {
 118         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 119         { }
 120 };
 121
 122 static struct usb_device_id edgeport_2port_id_table [] = {
 123         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 124         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 125         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 126         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 127         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 128         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 132         { }
 133 };
 134
 135 /* Devices that this driver supports */
 136 static struct usb_device_id id_table_combined [] = {
 137         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 138         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 141         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 142         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 143         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 147         { }
 148 };
 149
 150 MODULE_DEVICE_TABLE (usb, id_table_combined);
 151
 152 static struct usb_driver io_driver = {
 153         .owner =        THIS_MODULE,
 154         .name =         "io_ti",
 155         .probe =        usb_serial_probe,
 156         .disconnect =   usb_serial_disconnect,
 157         .id_table =     id_table_combined,
 158 };
 159
 160
 161 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
 162
 163 static int TIStayInBootMode = 0;
 164 static int ignore_cpu_rev = 0;
 165
 166
 167
 168 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
 169
 170 static int TIReadVendorRequestSync (struct usb_device *dev,
 171                                 __u8            request,
 172                                 __u16           value,
 173                                 __u16           index,
 174                                 u8              *data,
 175                                 int             size)
 176 {
 177         int status;
 178
 179         status = usb_control_msg (dev,
 180                                 usb_rcvctrlpipe(dev, 0),
 181                                 request,
 182                                 (USB_TYPE_VENDOR |
 183                                  USB_RECIP_DEVICE |
 184                                  USB_DIR_IN),
 185                                 value,
 186                                 index,
 187                                 data,
 188                                 size,
 189                                 HZ);
 190         if (status < 0)
 191                 return status;
 192         if (status != size) {
 193                 dbg ("%s - wanted to write %d, but only wrote %d",
 194                      __FUNCTION__, size, status);
 195                 return -ECOMM;
 196         }
 197         return 0;
 198 }
 199
 200 static int TISendVendorRequestSync (struct usb_device *dev,
 201                                 __u8            request,
 202                                 __u16           value,
 203                                 __u16           index,
 204                                 u8              *data,
 205                                 int             size)
 206 {
 207         int status;
 208
 209         status = usb_control_msg (dev,
 210                                 usb_sndctrlpipe(dev, 0),
 211                                 request,
 212                                 (USB_TYPE_VENDOR |
 213                                  USB_RECIP_DEVICE |
 214                                  USB_DIR_OUT),
 215                                 value,
 216                                 index,
 217                                 data,
 218                                 size,
 219                                 HZ);
 220
 221         if (status < 0)
 222                 return status;
 223         if (status != size) {
 224                 dbg ("%s - wanted to write %d, but only wrote %d",
 225                      __FUNCTION__, size, status);
 226                 return -ECOMM;
 227         }
 228         return 0;
 229 }
 230
 231 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
 232                                 __u8 moduleid, __u16 value, u8 *data,
 233                                 int size)
 234 {
 235         return TISendVendorRequestSync (dev,
 236                                           command,                      // Request
 237                                           value,                        // wValue
 238                                           moduleid,                     // wIndex
 239                                           data,                         // TransferBuffer
 240                                           size);                        // TransferBufferLength
 241
 242 }
 243
 244
 245 /* clear tx/rx buffers and fifo in TI UMP */
 246 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
 247 {
 248         int port_number = port->number - port->serial->minor;
 249
 250         dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
 251
 252         return TIWriteCommandSync (port->serial->dev,
 253                                         UMPC_PURGE_PORT,
 254                                         (__u8)(UMPM_UART1_PORT + port_number),
 255                                         mask,
 256                                         NULL,
 257                                         0);
 258 }
 259
 260 /**
 261  * TIReadDownloadMemory - Read edgeport memory from TI chip
 262  * @dev: usb device pointer
 263  * @start_address: Device CPU address at which to read
 264  * @length: Length of above data
 265  * @address_type: Can read both XDATA and I2C
 266  * @buffer: pointer to input data buffer
 267  */
 268 static int TIReadDownloadMemory(struct usb_device *dev, int start_address,
 269                                 int length, __u8 address_type, __u8 *buffer)
 270 {
 271         int status = 0;
 272         __u8 read_length;
 273         __be16 be_start_address;
 274
 275         dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
 276
 277         /* Read in blocks of 64 bytes
 278          * (TI firmware can't handle more than 64 byte reads)
 279          */
 280         while (length) {
 281                 if (length > 64)
 282                         read_length= 64;
 283                 else
 284                         read_length = (__u8)length;
 285
 286                 if (read_length > 1) {
 287                         dbg ("%s - @ %x for %d", __FUNCTION__,
 288                              start_address, read_length);
 289                 }
 290                 be_start_address = cpu_to_be16 (start_address);
 291                 status = TIReadVendorRequestSync (dev,
 292                                                   UMPC_MEMORY_READ,     // Request
 293                                                   (__u16)address_type,  // wValue (Address type)
 294                                                   be_start_address,     // wIndex (Address to read)
 295                                                   buffer,               // TransferBuffer
 296                                                   read_length); // TransferBufferLength
 297
 298                 if (status) {
 299                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 300                         return status;
 301                 }
 302
 303                 if (read_length > 1) {
 304                         usb_serial_debug_data(debug, &dev->dev, __FUNCTION__,
 305                                               read_length, buffer);
 306                 }
 307
 308                 /* Update pointers/length */
 309                 start_address += read_length;
 310                 buffer += read_length;
 311                 length -= read_length;
 312         }
 313
 314         return status;
 315 }
 316
 317 static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
 318 {
 319         return TIReadDownloadMemory (dev,
 320                                      start_address,
 321                                      length,
 322                                      DTK_ADDR_SPACE_XDATA,
 323                                      buffer);
 324 }
 325
 326 /* Read edgeport memory to a given block */
 327 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
 328 {
 329         int status = 0;
 330         int i;
 331
 332         for (i=0; i< length; i++) {
 333                 status = TIReadVendorRequestSync (serial->serial->dev,
 334                                         UMPC_MEMORY_READ,               // Request
 335                                         serial->TI_I2C_Type,            // wValue (Address type)
 336                                         (__u16)(start_address+i),       // wIndex
 337                                         &buffer[i],                     // TransferBuffer
 338                                         0x01);                          // TransferBufferLength
 339                 if (status) {
 340                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 341                         return status;
 342                 }
 343         }
 344
 345         dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
 346         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
 347
 348         serial->TiReadI2C = 1;
 349
 350         return status;
 351 }
 352
 353 /* Write given block to TI EPROM memory */
 354 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 355 {
 356         int status = 0;
 357         int i;
 358         __u8 temp;
 359
 360         /* Must do a read before write */
 361         if (!serial->TiReadI2C) {
 362                 status = TIReadBootMemory(serial, 0, 1, &temp);
 363                 if (status)
 364                         return status;
 365         }
 366
 367         for (i=0; i < length; ++i) {
 368                 status = TISendVendorRequestSync (serial->serial->dev,
 369                                                 UMPC_MEMORY_WRITE,              // Request
 370                                                 buffer[i],                      // wValue
 371                                                 (__u16)(i+start_address),       // wIndex
 372                                                 NULL,                           // TransferBuffer
 373                                                 0);                             // TransferBufferLength
 374                 if (status)
 375                         return status;
 376         }
 377
 378         dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
 379         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
 380
 381         return status;
 382 }
 383
 384
 385 /* Write edgeport I2C memory to TI chip */
 386 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
 387 {
 388         int status = 0;
 389         int write_length;
 390         __be16 be_start_address;
 391
 392         /* We can only send a maximum of 1 aligned byte page at a time */
 393
 394         /* calulate the number of bytes left in the first page */
 395         write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
 396
 397         if (write_length > length)
 398                 write_length = length;
 399
 400         dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 401         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
 402
 403         /* Write first page */
 404         be_start_address = cpu_to_be16 (start_address);
 405         status = TISendVendorRequestSync (serial->serial->dev,
 406                                         UMPC_MEMORY_WRITE,      // Request
 407                                         (__u16)address_type,    // wValue
 408                                         be_start_address,       // wIndex
 409                                         buffer,                 // TransferBuffer
 410                                         write_length);
 411         if (status) {
 412                 dbg ("%s - ERROR %d", __FUNCTION__, status);
 413                 return status;
 414         }
 415
 416         length          -= write_length;
 417         start_address   += write_length;
 418         buffer          += write_length;
 419
 420         /* We should be aligned now -- can write max page size bytes at a time */
 421         while (length) {
 422                 if (length > EPROM_PAGE_SIZE)
 423                         write_length = EPROM_PAGE_SIZE;
 424                 else
 425                         write_length = length;
 426
 427                 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 428                 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
 429
 430                 /* Write next page */
 431                 be_start_address = cpu_to_be16 (start_address);
 432                 status = TISendVendorRequestSync (serial->serial->dev,
 433                                                 UMPC_MEMORY_WRITE,      // Request
 434                                                 (__u16)address_type,    // wValue
 435                                                 be_start_address,       // wIndex
 436                                                 buffer,                 // TransferBuffer
 437                                                 write_length);          // TransferBufferLength
 438                 if (status) {
 439                         dbg ("%s - ERROR %d", __FUNCTION__, status);
 440                         return status;
 441                 }
 442
 443                 length          -= write_length;
 444                 start_address   += write_length;
 445                 buffer          += write_length;
 446         }
 447         return status;
 448 }
 449
 450 /* Examine the UMP DMA registers and LSR
 451  *
 452  * Check the MSBit of the X and Y DMA byte count registers.
 453  * A zero in this bit indicates that the TX DMA buffers are empty
 454  * then check the TX Empty bit in the UART.
 455  */
 456 static int TIIsTxActive (struct edgeport_port *port)
 457 {
 458         int status;
 459         struct out_endpoint_desc_block *oedb;
 460         __u8 *lsr;
 461         int bytes_left = 0;
 462
 463         oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
 464         if (!oedb) {
 465                 dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
 466                 return -ENOMEM;
 467         }
 468
 469         lsr = kmalloc (1, GFP_KERNEL);  /* Sigh, that's right, just one byte,
 470                                            as not all platforms can do DMA
 471                                            from stack */
 472         if (!lsr) {
 473                 kfree(oedb);
 474                 return -ENOMEM;
 475         }
 476         /* Read the DMA Count Registers */
 477         status = TIReadRam (port->port->serial->dev,
 478                             port->dma_address,
 479                             sizeof( *oedb),
 480                             (void *)oedb);
 481
 482         if (status)
 483                 goto exit_is_tx_active;
 484
 485         dbg ("%s - XByteCount    0x%X", __FUNCTION__, oedb->XByteCount);
 486
 487         /* and the LSR */
 488         status = TIReadRam (port->port->serial->dev,
 489                             port->uart_base + UMPMEM_OFFS_UART_LSR,
 490                             1,
 491                             lsr);
 492
 493         if (status)
 494                 goto exit_is_tx_active;
 495         dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
 496
 497         /* If either buffer has data or we are transmitting then return TRUE */
 498         if ((oedb->XByteCount & 0x80 ) != 0 )
 499                 bytes_left += 64;
 500
 501         if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
 502                 bytes_left += 1;
 503
 504         /* We return Not Active if we get any kind of error */
 505 exit_is_tx_active:
 506         dbg ("%s - return %d", __FUNCTION__, bytes_left );
 507
 508         kfree(lsr);
 509         kfree(oedb);
 510         return bytes_left;
 511 }
 512
 513 static void TIChasePort(struct edgeport_port *port)
 514 {
 515         int loops;
 516         int last_count;
 517         int write_size;
 518
 519 restart_tx_loop:
 520         // Base the LoopTime on the baud rate
 521         if (port->baud_rate == 0)
 522                 port->baud_rate = 1200;
 523
 524         write_size = port->tx.count;
 525         loops = max(100, (100*write_size)/(port->baud_rate/10));
 526         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 527              write_size, port->baud_rate, loops);
 528
 529         while (1) {
 530                 // Save Last count
 531                 last_count = port->tx.count;
 532
 533                 dbg ("%s - Tx Buffer Size = %d loops = %d", __FUNCTION__,
 534                      last_count, loops);
 535
 536                 /* Is the Edgeport Buffer empty? */
 537                 if (port->tx.count == 0)
 538                         break;
 539
 540                 /* Block the thread for 10ms */
 541                 msleep(10);
 542
 543                 if (last_count == port->tx.count) {
 544                         /* No activity.. count down. */
 545                         --loops;
 546                         if (loops == 0) {
 547                                 dbg ("%s - Wait for TxEmpty - TIMEOUT",
 548                                      __FUNCTION__);
 549                                 return;
 550                         }
 551                 } else {
 552                         /* Reset timeout value back to a minimum of 1 second */
 553                         dbg ("%s - Wait for TxEmpty  Reset Count", __FUNCTION__);
 554                         goto restart_tx_loop;
 555                 }
 556         }
 557
 558         dbg ("%s - Local Tx Buffer Empty -- Waiting for TI UMP to EMPTY X/Y and FIFO",
 559              __FUNCTION__);
 560
 561         write_size = TIIsTxActive (port);
 562         loops = max(50, (100*write_size)/(port->baud_rate/10));
 563         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 564              write_size, port->baud_rate, loops);
 565
 566         while (1) {
 567                 /* This function takes 4 ms; */
 568                 if (!TIIsTxActive (port)) {
 569                         /* Delay a few char times */
 570                         msleep(50);
 571                         dbg ("%s - Empty", __FUNCTION__);
 572                         return;
 573                 }
 574
 575                 --loops;
 576                 if (loops == 0) {
 577                         dbg ("%s - TIMEOUT", __FUNCTION__);
 578                         return;
 579                 }
 580         }
 581 }
 582
 583 static int TIChooseConfiguration (struct usb_device *dev)
 584 {
 585         // There may be multiple configurations on this device, in which case
 586         // we would need to read and parse all of them to find out which one
 587         // we want. However, we just support one config at this point,
 588         // configuration # 1, which is Config Descriptor 0.
 589
 590         dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
 591         dbg ("%s - MAX Power            = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
 592
 593         if (dev->config->desc.bNumInterfaces != 1) {
 594                 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
 595                 return -ENODEV;
 596         }
 597
 598         return 0;
 599 }
 600
 601 static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 602 {
 603         int status;
 604
 605         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 606                 status = TIReadDownloadMemory (serial->serial->dev,
 607                                                start_address,
 608                                                length,
 609                                                serial->TI_I2C_Type,
 610                                                buffer);
 611         } else {
 612                 status = TIReadBootMemory (serial,
 613                                            start_address,
 614                                            length,
 615                                            buffer);
 616         }
 617
 618         return status;
 619 }
 620
 621 static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 622 {
 623         if (serial->product_info.TiMode == TI_MODE_BOOT)
 624                 return TIWriteBootMemory (serial,
 625                                           start_address,
 626                                           length,
 627                                           buffer);
 628
 629         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 630                 return TIWriteDownloadI2C (serial,
 631                                            start_address,
 632                                            length,
 633                                            serial->TI_I2C_Type,
 634                                            buffer);
 635
 636         return -EINVAL;
 637 }
 638
 639
 640
 641 /* Read a descriptor header from I2C based on type */
 642 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
 643 {
 644         int start_address;
 645         int status;
 646
 647         /* Search for requested descriptor in I2C */
 648         start_address = 2;
 649         do {
 650                 status = TIReadRom (serial,
 651                                    start_address,
 652                                    sizeof(struct ti_i2c_desc),
 653                                    (__u8 *)rom_desc );
 654                 if (status)
 655                         return 0;
 656
 657                 if (rom_desc->Type == desc_type)
 658                         return start_address;
 659
 660                 start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
 661
 662         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 663
 664         return 0;
 665 }
 666
 667 /* Validate descriptor checksum */
 668 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 669 {
 670         __u16 i;
 671         __u8 cs = 0;
 672
 673         for (i=0; i < rom_desc->Size; i++) {
 674                 cs = (__u8)(cs + buffer[i]);
 675         }
 676         if (cs != rom_desc->CheckSum) {
 677                 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
 678                 return -EINVAL;
 679         }
 680         return 0;
 681 }
 682
 683 /* Make sure that the I2C image is good */
 684 static int TiValidateI2cImage (struct edgeport_serial *serial)
 685 {
 686         struct device *dev = &serial->serial->dev->dev;
 687         int status = 0;
 688         struct ti_i2c_desc *rom_desc;
 689         int start_address = 2;
 690         __u8 *buffer;
 691
 692         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 693         if (!rom_desc) {
 694                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 695                 return -ENOMEM;
 696         }
 697         buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
 698         if (!buffer) {
 699                 dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
 700                 kfree (rom_desc);
 701                 return -ENOMEM;
 702         }
 703
 704         // Read the first byte (Signature0) must be 0x52
 705         status = TIReadRom (serial, 0, 1, buffer);
 706         if (status)
 707                 goto ExitTiValidateI2cImage;
 708
 709         if (*buffer != 0x52) {
 710                 dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
 711                 status = -ENODEV;
 712                 goto ExitTiValidateI2cImage;
 713         }
 714
 715         do {
 716                 // Validate the I2C
 717                 status = TIReadRom (serial,
 718                                 start_address,
 719                                 sizeof(struct ti_i2c_desc),
 720                                 (__u8 *)rom_desc);
 721                 if (status)
 722                         break;
 723
 724                 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
 725                         status = -ENODEV;
 726                         dbg ("%s - structure too big, erroring out.", __FUNCTION__);
 727                         break;
 728                 }
 729
 730                 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
 731
 732                 // Skip type 2 record
 733                 if ((rom_desc->Type & 0x0f) != I2C_DESC_TYPE_FIRMWARE_BASIC) {
 734                         // Read the descriptor data
 735                         status = TIReadRom(serial,
 736                                                 start_address+sizeof(struct ti_i2c_desc),
 737                                                 rom_desc->Size,
 738                                                 buffer);
 739                         if (status)
 740                                 break;
 741
 742                         status = ValidChecksum(rom_desc, buffer);
 743                         if (status)
 744                                 break;
 745                 }
 746                 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
 747
 748         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
 749
 750         if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
 751                 status = -ENODEV;
 752
 753 ExitTiValidateI2cImage:
 754         kfree (buffer);
 755         kfree (rom_desc);
 756         return status;
 757 }
 758
 759 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
 760 {
 761         int status;
 762         int start_address;
 763         struct ti_i2c_desc *rom_desc;
 764         struct edge_ti_manuf_descriptor *desc;
 765
 766         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 767         if (!rom_desc) {
 768                 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
 769                 return -ENOMEM;
 770         }
 771         start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
 772
 773         if (!start_address) {
 774                 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
 775                 status = -ENODEV;
 776                 goto exit;
 777         }
 778
 779         // Read the descriptor data
 780         status = TIReadRom (serial,
 781                                 start_address+sizeof(struct ti_i2c_desc),
 782                                 rom_desc->Size,
 783                                 buffer);
 784         if (status)
 785                 goto exit;
 786
 787         status = ValidChecksum(rom_desc, buffer);
 788
 789         desc = (struct edge_ti_manuf_descriptor *)buffer;
 790         dbg ( "%s - IonConfig      0x%x", __FUNCTION__, desc->IonConfig         );
 791         dbg ( "%s - Version          %d", __FUNCTION__, desc->Version           );
 792         dbg ( "%s - Cpu/Board      0x%x", __FUNCTION__, desc->CpuRev_BoardRev   );
 793         dbg ( "%s - NumPorts         %d", __FUNCTION__, desc->NumPorts          );
 794         dbg ( "%s - NumVirtualPorts  %d", __FUNCTION__, desc->NumVirtualPorts   );
 795         dbg ( "%s - TotalPorts       %d", __FUNCTION__, desc->TotalPorts        );
 796
 797 exit:
 798         kfree (rom_desc);
 799         return status;
 800 }
 801
 802 /* Build firmware header used for firmware update */
 803 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
 804 {
 805         __u8 *buffer;
 806         int buffer_size;
 807         int i;
 808         __u8 cs = 0;
 809         struct ti_i2c_desc *i2c_header;
 810         struct ti_i2c_image_header *img_header;
 811         struct ti_i2c_firmware_rec *firmware_rec;
 812
 813         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
 814         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
 815         // will download the latest firmware (padded to 15.5k) into the UMP ram.
 816         // And finally when the device comes back up in download mode the driver will cause
 817         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
 818         // the record type from 0xf2 to 0x02.
 819
 820         // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
 821         buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
 822
 823         buffer = kmalloc (buffer_size, GFP_KERNEL);
 824         if (!buffer) {
 825                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 826                 return -ENOMEM;
 827         }
 828
 829         // Set entire image of 0xffs
 830         memset (buffer, 0xff, buffer_size);
 831
 832         // Copy version number into firmware record
 833         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 834
 835         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 836         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 837
 838         // Pointer to fw_down memory image
 839         img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
 840
 841         memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
 842                 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
 843                 img_header->Length);
 844
 845         for (i=0; i < buffer_size; i++) {
 846                 cs = (__u8)(cs + buffer[i]);
 847         }
 848
 849         kfree (buffer);
 850
 851         // Build new header
 852         i2c_header =  (struct ti_i2c_desc *)header;
 853         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 854
 855         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 856         i2c_header->Size        = (__u16)buffer_size;
 857         i2c_header->CheckSum    = cs;
 858         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 859         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 860
 861         return 0;
 862 }
 863
 864 /* Try to figure out what type of I2c we have */
 865 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
 866 {
 867         int status;
 868         __u8 data;
 869
 870         // Try to read type 2
 871         status = TIReadVendorRequestSync (serial->serial->dev,
 872                                         UMPC_MEMORY_READ,               // Request
 873                                         DTK_ADDR_SPACE_I2C_TYPE_II,     // wValue (Address type)
 874                                         0,                              // wIndex
 875                                         &data,                          // TransferBuffer
 876                                         0x01);                          // TransferBufferLength
 877         if (status)
 878                 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
 879         else
 880                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 881         if ((!status) && data == 0x52) {
 882                 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
 883                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 884                 return 0;
 885         }
 886
 887         // Try to read type 3
 888         status = TIReadVendorRequestSync (serial->serial->dev,
 889                                         UMPC_MEMORY_READ,               // Request
 890                                         DTK_ADDR_SPACE_I2C_TYPE_III,    // wValue (Address type)
 891                                         0,                              // wIndex
 892                                         &data,                          // TransferBuffer
 893                                         0x01);                          // TransferBufferLength
 894         if (status)
 895                 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
 896         else
 897                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 898         if ((!status) && data == 0x52) {
 899                 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
 900                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 901                 return 0;
 902         }
 903
 904         dbg ("%s - Unknown", __FUNCTION__);
 905         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 906         return -ENODEV;
 907 }
 908
 909 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
 910 {
 911         int status;
 912
 913         status = usb_bulk_msg (serial->dev,
 914                                 usb_sndbulkpipe(serial->dev,
 915                                                 serial->port[0]->bulk_out_endpointAddress),
 916                                 buffer,
 917                                 length,
 918                                 num_sent,
 919                                 HZ);
 920         return status;
 921 }
 922
 923 /* Download given firmware image to the device (IN BOOT MODE) */
 924 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
 925 {
 926         int status = 0;
 927         int pos;
 928         int transfer;
 929         int done;
 930
 931         // Transfer firmware image
 932         for (pos = 0; pos < image_length; ) {
 933                 // Read the next buffer from file
 934                 transfer = image_length - pos;
 935                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 936                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 937
 938                 // Transfer data
 939                 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
 940                 if (status)
 941                         break;
 942                 // Advance buffer pointer
 943                 pos += done;
 944         }
 945
 946         return status;
 947 }
 948
 949 // FIXME!!!
 950 static int TIConfigureBootDevice (struct usb_device *dev)
 951 {
 952         return 0;
 953 }
 954
 955 /**
 956  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 957  *
 958  * This routine downloads the main operating code into the TI5052, using the
 959  * boot code already burned into E2PROM or ROM.
 960  */
 961 static int TIDownloadFirmware (struct edgeport_serial *serial)
 962 {
 963         struct device *dev = &serial->serial->dev->dev;
 964         int status = 0;
 965         int start_address;
 966         struct edge_ti_manuf_descriptor *ti_manuf_desc;
 967         struct usb_interface_descriptor *interface;
 968         int download_cur_ver;
 969         int download_new_ver;
 970
 971         /* This routine is entered by both the BOOT mode and the Download mode
 972          * We can determine which code is running by the reading the config
 973          * descriptor and if we have only one bulk pipe it is in boot mode
 974          */
 975         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
 976
 977         /* Default to type 2 i2c */
 978         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 979
 980         status = TIChooseConfiguration (serial->serial->dev);
 981         if (status)
 982                 return status;
 983
 984         interface = &serial->serial->interface->cur_altsetting->desc;
 985         if (!interface) {
 986                 dev_err (&serial->serial->dev->dev, "%s - no interface set, error!", __FUNCTION__);
 987                 return -ENODEV;
 988         }
 989
 990         // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
 991         // if we have more than one endpoint we are definitely in download mode
 992         if (interface->bNumEndpoints > 1)
 993                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
 994         else
 995                 // Otherwise we will remain in configuring mode
 996                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
 997
 998         // Save Download Version Number
 999         OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1000         OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1001         OperationalCodeImageVersion.BuildNumber  = PagableOperationalCodeImageVersion.BuildNumber;
1002
1003         /********************************************************************/
1004         /* Download Mode */
1005         /********************************************************************/
1006         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1007                 struct ti_i2c_desc *rom_desc;
1008
1009                 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1010
1011                 status = TiValidateI2cImage (serial);
1012                 if (status) {
1013                         dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1014                              __FUNCTION__);
1015                         return status;
1016                 }
1017
1018                 /* Validate Hardware version number
1019                  * Read Manufacturing Descriptor from TI Based Edgeport
1020                  */
1021                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1022                 if (!ti_manuf_desc) {
1023                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1024                         return -ENOMEM;
1025                 }
1026                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1027                 if (status) {
1028                         kfree (ti_manuf_desc);
1029                         return status;
1030                 }
1031
1032                 // Check version number of ION descriptor
1033                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1034                         dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1035                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1036                         kfree (ti_manuf_desc);
1037                         return -EINVAL;
1038                 }
1039
1040                 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1041                 if (!rom_desc) {
1042                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1043                         kfree (ti_manuf_desc);
1044                         return -ENOMEM;
1045                 }
1046
1047                 // Search for type 2 record (firmware record)
1048                 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1049                         struct ti_i2c_firmware_rec *firmware_version;
1050                         __u8 record;
1051
1052                         dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1053
1054                         firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1055                         if (!firmware_version) {
1056                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1057                                 kfree (rom_desc);
1058                                 kfree (ti_manuf_desc);
1059                                 return -ENOMEM;
1060                         }
1061
1062                         // Validate version number
1063                         // Read the descriptor data
1064                         status = TIReadRom (serial,
1065                                         start_address+sizeof(struct ti_i2c_desc),
1066                                         sizeof(struct ti_i2c_firmware_rec),
1067                                         (__u8 *)firmware_version);
1068                         if (status) {
1069                                 kfree (firmware_version);
1070                                 kfree (rom_desc);
1071                                 kfree (ti_manuf_desc);
1072                                 return status;
1073                         }
1074
1075                         // Check version number of download with current version in I2c
1076                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1077                                            (firmware_version->Ver_Minor);
1078                         download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1079                                            (OperationalCodeImageVersion.MinorVersion);
1080
1081                         dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
1082                              __FUNCTION__,
1083                              firmware_version->Ver_Major,
1084                              firmware_version->Ver_Minor,
1085                              OperationalCodeImageVersion.MajorVersion,
1086                              OperationalCodeImageVersion.MinorVersion);
1087
1088                         // Check if we have an old version in the I2C and update if necessary
1089                         if (download_cur_ver != download_new_ver) {
1090                                 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1091                                      __FUNCTION__,
1092                                      firmware_version->Ver_Major,
1093                                      firmware_version->Ver_Minor,
1094                                      OperationalCodeImageVersion.MajorVersion,
1095                                      OperationalCodeImageVersion.MinorVersion);
1096
1097                                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1098                                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1099                                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1100                                 // And finally when the device comes back up in download mode the driver will cause
1101                                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1102                                 // the record type from 0xf2 to 0x02.
1103
1104                                 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1105
1106                                 // Change the I2C Firmware record type to 0xf2 to trigger an update
1107                                 status = TIWriteRom (serial,
1108                                                         start_address,
1109                                                         sizeof(record),
1110                                                         &record);
1111                                 if (status) {
1112                                         kfree (firmware_version);
1113                                         kfree (rom_desc);
1114                                         kfree (ti_manuf_desc);
1115                                         return status;
1116                                 }
1117
1118                                 // verify the write -- must do this in order for write to
1119                                 // complete before we do the hardware reset
1120                                 status = TIReadRom (serial,
1121                                                         start_address,
1122                                                         sizeof(record),
1123                                                         &record);
1124
1125                                 if (status) {
1126                                         kfree (firmware_version);
1127                                         kfree (rom_desc);
1128                                         kfree (ti_manuf_desc);
1129                                         return status;
1130                                 }
1131
1132                                 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1133                                         dev_err (dev, "%s - error resetting device\n", __FUNCTION__);
1134                                         kfree (firmware_version);
1135                                         kfree (rom_desc);
1136                                         kfree (ti_manuf_desc);
1137                                         return -ENODEV;
1138                                 }
1139
1140                                 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1141
1142                                 // Reset UMP -- Back to BOOT MODE
1143                                 status = TISendVendorRequestSync (serial->serial->dev,
1144                                                                 UMPC_HARDWARE_RESET,    // Request
1145                                                                 0,                      // wValue
1146                                                                 0,                      // wIndex
1147                                                                 NULL,                   // TransferBuffer
1148                                                                 0);                     // TransferBufferLength
1149
1150                                 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1151
1152                                 /* return an error on purpose. */
1153                                 kfree (firmware_version);
1154                                 kfree (rom_desc);
1155                                 kfree (ti_manuf_desc);
1156                                 return -ENODEV;
1157                         }
1158                         kfree (firmware_version);
1159                 }
1160                 // Search for type 0xF2 record (firmware blank record)
1161                 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1162                         #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1163                         __u8 *header;
1164                         __u8 *vheader;
1165
1166                         header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
1167                         if (!header) {
1168                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1169                                 kfree (rom_desc);
1170                                 kfree (ti_manuf_desc);
1171                                 return -ENOMEM;
1172                         }
1173
1174                         vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1175                         if (!vheader) {
1176                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1177                                 kfree (header);
1178                                 kfree (rom_desc);
1179                                 kfree (ti_manuf_desc);
1180                                 return -ENOMEM;
1181                         }
1182
1183                         dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1184
1185                         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1186                         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1187                         // will download the latest firmware (padded to 15.5k) into the UMP ram.
1188                         // And finally when the device comes back up in download mode the driver will cause
1189                         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1190                         // the record type from 0xf2 to 0x02.
1191                         status = BuildI2CFirmwareHeader(header, dev);
1192                         if (status) {
1193                                 kfree (vheader);
1194                                 kfree (header);
1195                                 kfree (rom_desc);
1196                                 kfree (ti_manuf_desc);
1197                                 return status;
1198                         }
1199
1200                         // Update I2C with type 0xf2 record with correct size and checksum
1201                         status = TIWriteRom (serial,
1202                                                 start_address,
1203                                                 HEADER_SIZE,
1204                                                 header);
1205                         if (status) {
1206                                 kfree (vheader);
1207                                 kfree (header);
1208                                 kfree (rom_desc);
1209                                 kfree (ti_manuf_desc);
1210                                 return status;
1211                         }
1212
1213                         // verify the write -- must do this in order for write to
1214                         // complete before we do the hardware reset
1215                         status = TIReadRom (serial,
1216                                                 start_address,
1217                                                 HEADER_SIZE,
1218                                                 vheader);
1219
1220                         if (status) {
1221                                 dbg ("%s - can't read header back", __FUNCTION__);
1222                                 kfree (vheader);
1223                                 kfree (header);
1224                                 kfree (rom_desc);
1225                                 kfree (ti_manuf_desc);
1226                                 return status;
1227                         }
1228                         if (memcmp(vheader, header, HEADER_SIZE)) {
1229                                 dbg ("%s - write download record failed", __FUNCTION__);
1230                                 kfree (vheader);
1231                                 kfree (header);
1232                                 kfree (rom_desc);
1233                                 kfree (ti_manuf_desc);
1234                                 return status;
1235                         }
1236
1237                         kfree (vheader);
1238                         kfree (header);
1239
1240                         dbg ("%s - Start firmware update", __FUNCTION__);
1241
1242                         // Tell firmware to copy download image into I2C
1243                         status = TISendVendorRequestSync (serial->serial->dev,
1244                                                 UMPC_COPY_DNLD_TO_I2C,  // Request
1245                                                 0,                      // wValue
1246                                                 0,                      // wIndex
1247                                                 NULL,                   // TransferBuffer
1248                                                 0);                     // TransferBufferLength
1249
1250                         dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1251                         if (status) {
1252                                 dbg ("%s - UMPC_COPY_DNLD_TO_I2C failed", __FUNCTION__);
1253                                 kfree (rom_desc);
1254                                 kfree (ti_manuf_desc);
1255                                 return status;
1256                         }
1257                 }
1258
1259                 // The device is running the download code
1260                 kfree (rom_desc);
1261                 kfree (ti_manuf_desc);
1262                 return 0;
1263         }
1264
1265         /********************************************************************/
1266         /* Boot Mode */
1267         /********************************************************************/
1268         dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1269              __FUNCTION__);
1270
1271         // Configure the TI device so we can use the BULK pipes for download
1272         status = TIConfigureBootDevice (serial->serial->dev);
1273         if (status)
1274                 return status;
1275
1276         if (serial->serial->dev->descriptor.idVendor != USB_VENDOR_ID_ION) {
1277                 dbg ("%s - VID = 0x%x", __FUNCTION__,
1278                      serial->serial->dev->descriptor.idVendor);
1279                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1280                 goto StayInBootMode;
1281         }
1282
1283         // We have an ION device (I2c Must be programmed)
1284         // Determine I2C image type
1285         if (TIGetI2cTypeInBootMode(serial)) {
1286                 goto StayInBootMode;
1287         }
1288
1289         // Registry variable set?
1290         if (TIStayInBootMode) {
1291                 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1292                 goto StayInBootMode;
1293         }
1294
1295         // Check for ION Vendor ID and that the I2C is valid
1296         if (!TiValidateI2cImage(serial)) {
1297                 struct ti_i2c_image_header *header;
1298                 int i;
1299                 __u8 cs = 0;
1300                 __u8 *buffer;
1301                 int buffer_size;
1302
1303                 /* Validate Hardware version number
1304                  * Read Manufacturing Descriptor from TI Based Edgeport
1305                  */
1306                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1307                 if (!ti_manuf_desc) {
1308                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1309                         return -ENOMEM;
1310                 }
1311                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1312                 if (status) {
1313                         kfree (ti_manuf_desc);
1314                         goto StayInBootMode;
1315                 }
1316
1317                 // Check for version 2
1318                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1319                         dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1320                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1321                         kfree (ti_manuf_desc);
1322                         goto StayInBootMode;
1323                 }
1324
1325                 kfree (ti_manuf_desc);
1326
1327                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1328                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1329                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1330                 // And finally when the device comes back up in download mode the driver will cause
1331                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1332                 // the record type from 0xf2 to 0x02.
1333
1334                 /*
1335                  * Do we really have to copy the whole firmware image,
1336                  * or could we do this in place!
1337                  */
1338
1339                 // Allocate a 15.5k buffer + 3 byte header
1340                 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1341                 buffer = kmalloc (buffer_size, GFP_KERNEL);
1342                 if (!buffer) {
1343                         dev_err (dev, "%s - out of memory\n", __FUNCTION__);
1344                         return -ENOMEM;
1345                 }
1346
1347                 // Initialize the buffer to 0xff (pad the buffer)
1348                 memset (buffer, 0xff, buffer_size);
1349
1350                 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1351
1352                 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1353                         cs = (__u8)(cs + buffer[i]);
1354                 }
1355
1356                 header = (struct ti_i2c_image_header *)buffer;
1357
1358                 // update length and checksum after padding
1359                 header->Length   = (__u16)(buffer_size - sizeof(struct ti_i2c_image_header));
1360                 header->CheckSum = cs;
1361
1362                 // Download the operational code
1363                 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1364                 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1365
1366                 kfree (buffer);
1367
1368                 if (status) {
1369                         dbg ("%s - Error downloading operational code image", __FUNCTION__);
1370                         return status;
1371                 }
1372
1373                 // Device will reboot
1374                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1375
1376                 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1377
1378                 /* return an error on purpose */
1379                 return -ENODEV;
1380         }
1381
1382 StayInBootMode:
1383         // Eprom is invalid or blank stay in boot mode
1384         dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1385         serial->product_info.TiMode = TI_MODE_BOOT;
1386
1387         return 0;
1388 }
1389
1390
1391 static int TISetDtr (struct edgeport_port *port)
1392 {
1393         int port_number = port->port->number - port->port->serial->minor;
1394
1395         dbg ("%s", __FUNCTION__);
1396         port->shadow_mcr |= MCR_DTR;
1397
1398         return TIWriteCommandSync (port->port->serial->dev,
1399                                 UMPC_SET_CLR_DTR,
1400                                 (__u8)(UMPM_UART1_PORT + port_number),
1401                                 1,      /* set */
1402                                 NULL,
1403                                 0);
1404 }
1405
1406 static int TIClearDtr (struct edgeport_port *port)
1407 {
1408         int port_number = port->port->number - port->port->serial->minor;
1409
1410         dbg ("%s", __FUNCTION__);
1411         port->shadow_mcr &= ~MCR_DTR;
1412
1413         return TIWriteCommandSync (port->port->serial->dev,
1414                                 UMPC_SET_CLR_DTR,
1415                                 (__u8)(UMPM_UART1_PORT + port_number),
1416                                 0,      /* clear */
1417                                 NULL,
1418                                 0);
1419 }
1420
1421 static int TISetRts (struct edgeport_port *port)
1422 {
1423         int port_number = port->port->number - port->port->serial->minor;
1424
1425         dbg ("%s", __FUNCTION__);
1426         port->shadow_mcr |= MCR_RTS;
1427
1428         return TIWriteCommandSync (port->port->serial->dev,
1429                                 UMPC_SET_CLR_RTS,
1430                                 (__u8)(UMPM_UART1_PORT + port_number),
1431                                 1,      /* set */
1432                                 NULL,
1433                                 0);
1434 }
1435
1436 static int TIClearRts (struct edgeport_port *port)
1437 {
1438         int port_number = port->port->number - port->port->serial->minor;
1439
1440         dbg ("%s", __FUNCTION__);
1441         port->shadow_mcr &= ~MCR_RTS;
1442
1443         return TIWriteCommandSync (port->port->serial->dev,
1444                                 UMPC_SET_CLR_RTS,
1445                                 (__u8)(UMPM_UART1_PORT + port_number),
1446                                 0,      /* clear */
1447                                 NULL,
1448                                 0);
1449 }
1450
1451 static int TISetLoopBack (struct edgeport_port *port)
1452 {
1453         int port_number = port->port->number - port->port->serial->minor;
1454
1455         dbg ("%s", __FUNCTION__);
1456
1457         return TIWriteCommandSync (port->port->serial->dev,
1458                                 UMPC_SET_CLR_LOOPBACK,
1459                                 (__u8)(UMPM_UART1_PORT + port_number),
1460                                 1,      /* set */
1461                                 NULL,
1462                                 0);
1463 }
1464
1465 static int TIClearLoopBack (struct edgeport_port *port)
1466 {
1467         int port_number = port->port->number - port->port->serial->minor;
1468
1469         dbg ("%s", __FUNCTION__);
1470
1471         return TIWriteCommandSync (port->port->serial->dev,
1472                                 UMPC_SET_CLR_LOOPBACK,
1473                                 (__u8)(UMPM_UART1_PORT + port_number),
1474                                 0,      /* clear */
1475                                 NULL,
1476                                 0);
1477 }
1478
1479 static int TISetBreak (struct edgeport_port *port)
1480 {
1481         int port_number = port->port->number - port->port->serial->minor;
1482
1483         dbg ("%s", __FUNCTION__);
1484
1485         return TIWriteCommandSync (port->port->serial->dev,
1486                                 UMPC_SET_CLR_BREAK,
1487                                 (__u8)(UMPM_UART1_PORT + port_number),
1488                                 1,      /* set */
1489                                 NULL,
1490                                 0);
1491 }
1492
1493 static int TIClearBreak (struct edgeport_port *port)
1494 {
1495         int port_number = port->port->number - port->port->serial->minor;
1496
1497         dbg ("%s", __FUNCTION__);
1498
1499         return TIWriteCommandSync (port->port->serial->dev,
1500                                 UMPC_SET_CLR_BREAK,
1501                                 (__u8)(UMPM_UART1_PORT + port_number),
1502                                 0,      /* clear */
1503                                 NULL,
1504                                 0);
1505 }
1506
1507 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1508 {
1509         int status = 0;
1510
1511         dbg ("%s - %x", __FUNCTION__, mcr);
1512
1513         if (mcr & MCR_DTR)
1514                 status = TISetDtr (port);
1515         else
1516                 status = TIClearDtr (port);
1517
1518         if (status)
1519                 return status;
1520
1521         if (mcr & MCR_RTS)
1522                 status = TISetRts (port);
1523         else
1524                 status = TIClearRts (port);
1525
1526         if (status)
1527                 return status;
1528
1529         if (mcr & MCR_LOOPBACK)
1530                 status = TISetLoopBack (port);
1531         else
1532                 status = TIClearLoopBack (port);
1533
1534         return status;
1535 }
1536
1537
1538
1539 /* Convert TI LSR to standard UART flags */
1540 static __u8 MapLineStatus (__u8 ti_lsr)
1541 {
1542         __u8 lsr = 0;
1543
1544 #define MAP_FLAG(flagUmp, flagUart)    \
1545         if (ti_lsr & flagUmp) \
1546                 lsr |= flagUart;
1547
1548         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1549         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1550         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1551         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1552         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* receive data available */
1553         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* transmit holding register empty */
1554
1555 #undef MAP_FLAG
1556
1557         return lsr;
1558 }
1559
1560 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1561 {
1562         struct async_icount *icount;
1563
1564         dbg ("%s - %02x", __FUNCTION__, msr);
1565
1566         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1567                 icount = &edge_port->icount;
1568
1569                 /* update input line counters */
1570                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1571                         icount->cts++;
1572                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1573                         icount->dsr++;
1574                 if (msr & EDGEPORT_MSR_DELTA_CD)
1575                         icount->dcd++;
1576                 if (msr & EDGEPORT_MSR_DELTA_RI)
1577                         icount->rng++;
1578                 wake_up_interruptible (&edge_port->delta_msr_wait);
1579         }
1580
1581         /* Save the new modem status */
1582         edge_port->shadow_msr = msr & 0xf0;
1583
1584         return;
1585 }
1586
1587 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1588 {
1589         struct async_icount *icount;
1590         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1591
1592         dbg ("%s - %02x", __FUNCTION__, new_lsr);
1593
1594         edge_port->shadow_lsr = lsr;
1595
1596         if (new_lsr & LSR_BREAK) {
1597                 /*
1598                  * Parity and Framing errors only count if they
1599                  * occur exclusive of a break being received.
1600                  */
1601                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1602         }
1603
1604         /* Place LSR data byte into Rx buffer */
1605         if (lsr_data && edge_port->port->tty) {
1606                 tty_insert_flip_char(edge_port->port->tty, data, 0);
1607                 tty_flip_buffer_push(edge_port->port->tty);
1608         }
1609
1610         /* update input line counters */
1611         icount = &edge_port->icount;
1612         if (new_lsr & LSR_BREAK)
1613                 icount->brk++;
1614         if (new_lsr & LSR_OVER_ERR)
1615                 icount->overrun++;
1616         if (new_lsr & LSR_PAR_ERR)
1617                 icount->parity++;
1618         if (new_lsr & LSR_FRM_ERR)
1619                 icount->frame++;
1620 }
1621
1622
1623 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
1624 {
1625         struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1626         struct usb_serial_port *port;
1627         struct edgeport_port *edge_port;
1628         unsigned char *data = urb->transfer_buffer;
1629         int length = urb->actual_length;
1630         int port_number;
1631         int function;
1632         int status;
1633         __u8 lsr;
1634         __u8 msr;
1635
1636         dbg("%s", __FUNCTION__);
1637
1638         switch (urb->status) {
1639         case 0:
1640                 /* success */
1641                 break;
1642         case -ECONNRESET:
1643         case -ENOENT:
1644         case -ESHUTDOWN:
1645                 /* this urb is terminated, clean up */
1646                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1647                 return;
1648         default:
1649                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
1650                 goto exit;
1651         }
1652
1653         if (!length) {
1654                 dbg ("%s - no data in urb", __FUNCTION__);
1655                 goto exit;
1656         }
1657
1658         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
1659
1660         if (length != 2) {
1661                 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1662                 goto exit;
1663         }
1664
1665         port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1666         function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1667         dbg ("%s - port_number %d, function %d, info 0x%x",
1668              __FUNCTION__, port_number, function, data[1]);
1669         port = edge_serial->serial->port[port_number];
1670         edge_port = usb_get_serial_port_data(port);
1671         if (!edge_port) {
1672                 dbg ("%s - edge_port not found", __FUNCTION__);
1673                 return;
1674         }
1675         switch (function) {
1676         case TIUMP_INTERRUPT_CODE_LSR:
1677                 lsr = MapLineStatus(data[1]);
1678                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1679                         /* Save the LSR event for bulk read completion routine */
1680                         dbg ("%s - LSR Event Port %u LSR Status = %02x",
1681                              __FUNCTION__, port_number, lsr);
1682                         edge_port->lsr_event = 1;
1683                         edge_port->lsr_mask = lsr;
1684                 } else {
1685                         dbg ("%s - ===== Port %d LSR Status = %02x ======",
1686                              __FUNCTION__, port_number, lsr);
1687                         handle_new_lsr (edge_port, 0, lsr, 0);
1688                 }
1689                 break;
1690
1691         case TIUMP_INTERRUPT_CODE_MSR:  // MSR
1692                 /* Copy MSR from UMP */
1693                 msr = data[1];
1694                 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1695                      __FUNCTION__, port_number, msr);
1696                 handle_new_msr (edge_port, msr);
1697                 break;
1698
1699         default:
1700                 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1701                          __FUNCTION__, data[1]);
1702                 break;
1703
1704         }
1705
1706 exit:
1707         status = usb_submit_urb (urb, GFP_ATOMIC);
1708         if (status)
1709                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1710                          __FUNCTION__, status);
1711 }
1712
1713 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
1714 {
1715         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1716         unsigned char *data = urb->transfer_buffer;
1717         struct tty_struct *tty;
1718         int status;
1719         int i;
1720         int port_number;
1721
1722         dbg("%s", __FUNCTION__);
1723
1724         if (urb->status) {
1725                 dbg ("%s - nonzero read bulk status received: %d",
1726                      __FUNCTION__, urb->status);
1727
1728                 if (urb->status == -EPIPE) {
1729                         /* clear any problem that might have happened on this pipe */
1730                         usb_clear_halt (edge_port->port->serial->dev, urb->pipe);
1731                         goto exit;
1732                 }
1733                 return;
1734         }
1735
1736         port_number = edge_port->port->number - edge_port->port->serial->minor;
1737
1738         if (edge_port->lsr_event) {
1739                 edge_port->lsr_event = 0;
1740                 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1741                      __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1742                 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1743                 /* Adjust buffer length/pointer */
1744                 --urb->actual_length;
1745                 ++data;
1746         }
1747
1748         tty = edge_port->port->tty;
1749         if (tty && urb->actual_length) {
1750                 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data);
1751
1752                 if (edge_port->close_pending) {
1753                         dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1754                 } else {
1755                         for (i = 0; i < urb->actual_length ; ++i) {
1756                                 /* if we insert more than TTY_FLIPBUF_SIZE characters,
1757                                  * we drop them. */
1758                                 if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
1759                                         tty_flip_buffer_push(tty);
1760                                 }
1761                                 /* this doesn't actually push the data through unless
1762                                  * tty->low_latency is set */
1763                                 tty_insert_flip_char(tty, data[i], 0);
1764                         }
1765                         tty_flip_buffer_push(tty);
1766                 }
1767                 edge_port->icount.rx += urb->actual_length;
1768         }
1769
1770 exit:
1771         /* continue always trying to read */
1772         status = usb_submit_urb (urb, GFP_ATOMIC);
1773         if (status)
1774                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1775                          __FUNCTION__, status);
1776 }
1777
1778 static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
1779 {
1780         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1781         struct tty_struct *tty;
1782
1783         dbg ("%s - port %d", __FUNCTION__, port->number);
1784
1785         if (urb->status) {
1786                 dbg ("%s - nonzero write bulk status received: %d",
1787                      __FUNCTION__, urb->status);
1788
1789                 if (urb->status == -EPIPE) {
1790                         /* clear any problem that might have happened on this pipe */
1791                         usb_clear_halt (port->serial->dev, urb->pipe);
1792                 }
1793                 return;
1794         }
1795
1796         tty = port->tty;
1797         if (tty) {
1798                 /* let the tty driver wakeup if it has a special write_wakeup function */
1799                 tty_wakeup(tty);
1800         }
1801 }
1802
1803 static int edge_open (struct usb_serial_port *port, struct file * filp)
1804 {
1805         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1806         struct edgeport_serial *edge_serial;
1807         struct usb_device *dev;
1808         struct urb *urb;
1809         int port_number;
1810         int status;
1811         u16 open_settings;
1812         u8 transaction_timeout;
1813
1814         dbg("%s - port %d", __FUNCTION__, port->number);
1815
1816         if (edge_port == NULL)
1817                 return -ENODEV;
1818
1819         /* force low_latency on so that our tty_push actually forces the data through,
1820            otherwise it is scheduled, and with high data rates (like with OHCI) data
1821            can get lost. */
1822         if (port->tty)
1823                 port->tty->low_latency = 1;
1824
1825         port_number = port->number - port->serial->minor;
1826         switch (port_number) {
1827                 case 0:
1828                         edge_port->uart_base = UMPMEM_BASE_UART1;
1829                         edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1830                         break;
1831                 case 1:
1832                         edge_port->uart_base = UMPMEM_BASE_UART2;
1833                         edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1834                         break;
1835                 default:
1836                         dev_err (&port->dev, "Unknown port number!!!\n");
1837                         return -ENODEV;
1838         }
1839
1840         dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1841              __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1842
1843         dev = port->serial->dev;
1844
1845         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1846         init_waitqueue_head (&edge_port->delta_msr_wait);
1847
1848         /* turn off loopback */
1849         status = TIClearLoopBack (edge_port);
1850         if (status)
1851                 return status;
1852
1853         /* set up the port settings */
1854         edge_set_termios (port, NULL);
1855
1856         /* open up the port */
1857
1858         /* milliseconds to timeout for DMA transfer */
1859         transaction_timeout = 2;
1860
1861         edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1862
1863         // milliseconds to timeout for DMA transfer
1864         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1865                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1866                              (transaction_timeout << 2));
1867
1868         dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1869
1870         /* Tell TI to open and start the port */
1871         status = TIWriteCommandSync (dev,
1872                                         UMPC_OPEN_PORT,
1873                                         (u8)(UMPM_UART1_PORT + port_number),
1874                                         open_settings,
1875                                         NULL,
1876                                         0);
1877         if (status)
1878                 return status;
1879
1880         /* Start the DMA? */
1881         status = TIWriteCommandSync (dev,
1882                                         UMPC_START_PORT,
1883                                         (u8)(UMPM_UART1_PORT + port_number),
1884                                         0,
1885                                         NULL,
1886                                         0);
1887         if (status)
1888                 return status;
1889
1890         /* Clear TX and RX buffers in UMP */
1891         status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1892         if (status)
1893                 return status;
1894
1895         /* Read Initial MSR */
1896         status = TIReadVendorRequestSync (dev,
1897                                         UMPC_READ_MSR,  // Request
1898                                         0,              // wValue
1899                                         (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
1900                                         &edge_port->shadow_msr,                 // TransferBuffer
1901                                         1);                                     // TransferBufferLength
1902         if (status)
1903                 return status;
1904
1905         dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
1906
1907         edge_serial = edge_port->edge_serial;
1908         if (edge_serial->num_ports_open == 0) {
1909                 /* we are the first port to be opened, let's post the interrupt urb */
1910                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1911                 if (!urb) {
1912                         dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
1913                         return -EINVAL;
1914                 }
1915                 urb->complete = edge_interrupt_callback;
1916                 urb->context = edge_serial;
1917                 urb->dev = dev;
1918                 status = usb_submit_urb (urb, GFP_KERNEL);
1919                 if (status) {
1920                         dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
1921                         return status;
1922                 }
1923         }
1924
1925         /*
1926          * reset the data toggle on the bulk endpoints to work around bug in
1927          * host controllers where things get out of sync some times
1928          */
1929         usb_clear_halt (dev, port->write_urb->pipe);
1930         usb_clear_halt (dev, port->read_urb->pipe);
1931
1932         /* start up our bulk read urb */
1933         urb = port->read_urb;
1934         if (!urb) {
1935                 dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
1936                 return -EINVAL;
1937         }
1938         urb->complete = edge_bulk_in_callback;
1939         urb->context = edge_port;
1940         urb->dev = dev;
1941         status = usb_submit_urb (urb, GFP_KERNEL);
1942         if (status) {
1943                 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
1944                 return status;
1945         }
1946
1947         ++edge_serial->num_ports_open;
1948
1949         dbg("%s - exited", __FUNCTION__);
1950
1951         return 0;
1952 }
1953
1954 static void edge_close (struct usb_serial_port *port, struct file * filp)
1955 {
1956         struct edgeport_serial *edge_serial;
1957         struct edgeport_port *edge_port;
1958         int port_number;
1959         int status;
1960
1961         dbg("%s - port %d", __FUNCTION__, port->number);
1962
1963         edge_serial = usb_get_serial_data(port->serial);
1964         edge_port = usb_get_serial_port_data(port);
1965         if ((edge_serial == NULL) || (edge_port == NULL))
1966                 return;
1967
1968         /* The bulkreadcompletion routine will check
1969          * this flag and dump add read data */
1970         edge_port->close_pending = 1;
1971
1972         /* chase the port close */
1973         TIChasePort (edge_port);
1974
1975         usb_unlink_urb (port->read_urb);
1976
1977         /* assuming we can still talk to the device,
1978          * send a close port command to it */
1979         dbg("%s - send umpc_close_port", __FUNCTION__);
1980         port_number = port->number - port->serial->minor;
1981         status = TIWriteCommandSync (port->serial->dev,
1982                                      UMPC_CLOSE_PORT,
1983                                      (__u8)(UMPM_UART1_PORT + port_number),
1984                                      0,
1985                                      NULL,
1986                                      0);
1987         --edge_port->edge_serial->num_ports_open;
1988         if (edge_port->edge_serial->num_ports_open <= 0) {
1989                 /* last port is now closed, let's shut down our interrupt urb */
1990                 usb_unlink_urb (port->serial->port[0]->interrupt_in_urb);
1991                 edge_port->edge_serial->num_ports_open = 0;
1992         }
1993         edge_port->close_pending = 0;
1994
1995         dbg("%s - exited", __FUNCTION__);
1996 }
1997
1998 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
1999 {
2000         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2001         int result;
2002
2003         dbg("%s - port %d", __FUNCTION__, port->number);
2004
2005         if (count == 0) {
2006                 dbg("%s - write request of 0 bytes", __FUNCTION__);
2007                 return 0;
2008         }
2009
2010         if (edge_port == NULL)
2011                 return -ENODEV;
2012         if (edge_port->close_pending == 1)
2013                 return -ENODEV;
2014
2015         if (port->write_urb->status == -EINPROGRESS) {
2016                 dbg ("%s - already writing", __FUNCTION__);
2017                 return 0;
2018         }
2019
2020         count = min (count, port->bulk_out_size);
2021
2022         if (from_user) {
2023                 if (copy_from_user(port->write_urb->transfer_buffer, data, count))
2024                         return -EFAULT;
2025         } else {
2026                 memcpy (port->write_urb->transfer_buffer, data, count);
2027         }
2028
2029         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
2030
2031         /* set up our urb */
2032         usb_fill_bulk_urb (port->write_urb, port->serial->dev,
2033                            usb_sndbulkpipe (port->serial->dev,
2034                                             port->bulk_out_endpointAddress),
2035                            port->write_urb->transfer_buffer, count,
2036                            edge_bulk_out_callback,
2037                            port);
2038
2039         /* send the data out the bulk port */
2040         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2041         if (result)
2042                 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
2043         else
2044                 result = count;
2045
2046         if (result > 0)
2047                 edge_port->icount.tx += count;
2048
2049         return result;
2050 }
2051
2052 static int edge_write_room (struct usb_serial_port *port)
2053 {
2054         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2055         int room = 0;
2056
2057         dbg("%s", __FUNCTION__);
2058
2059         if (edge_port == NULL)
2060                 return -ENODEV;
2061         if (edge_port->close_pending == 1)
2062                 return -ENODEV;
2063
2064         dbg("%s - port %d", __FUNCTION__, port->number);
2065
2066         if (port->write_urb->status != -EINPROGRESS)
2067                 room = port->bulk_out_size;
2068
2069         dbg("%s - returns %d", __FUNCTION__, room);
2070         return room;
2071 }
2072
2073 static int edge_chars_in_buffer (struct usb_serial_port *port)
2074 {
2075         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2076         int chars = 0;
2077
2078         dbg("%s", __FUNCTION__);
2079
2080         if (edge_port == NULL)
2081                 return -ENODEV;
2082         if (edge_port->close_pending == 1)
2083                 return -ENODEV;
2084
2085         dbg("%s - port %d", __FUNCTION__, port->number);
2086
2087         if (port->write_urb->status == -EINPROGRESS)
2088                 chars = port->write_urb->transfer_buffer_length;
2089
2090         dbg ("%s - returns %d", __FUNCTION__, chars);
2091         return chars;
2092 }
2093
2094 static void edge_throttle (struct usb_serial_port *port)
2095 {
2096         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2097         struct tty_struct *tty;
2098         int status;
2099
2100         dbg("%s - port %d", __FUNCTION__, port->number);
2101
2102         if (edge_port == NULL)
2103                 return;
2104
2105         tty = port->tty;
2106         if (!tty) {
2107                 dbg ("%s - no tty available", __FUNCTION__);
2108                 return;
2109         }
2110         /* if we are implementing XON/XOFF, send the stop character */
2111         if (I_IXOFF(tty)) {
2112                 unsigned char stop_char = STOP_CHAR(tty);
2113                 status = edge_write (port, 0, &stop_char, 1);
2114                 if (status <= 0) {
2115                         return;
2116                 }
2117         }
2118
2119         /* if we are implementing RTS/CTS, toggle that line */
2120         if (tty->termios->c_cflag & CRTSCTS) {
2121                 status = TIClearRts (edge_port);
2122         }
2123
2124         usb_unlink_urb (port->read_urb);
2125 }
2126
2127 static void edge_unthrottle (struct usb_serial_port *port)
2128 {
2129         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2130         struct tty_struct *tty;
2131         int status;
2132
2133         dbg("%s - port %d", __FUNCTION__, port->number);
2134
2135         if (edge_port == NULL)
2136                 return;
2137
2138         tty = port->tty;
2139         if (!tty) {
2140                 dbg ("%s - no tty available", __FUNCTION__);
2141                 return;
2142         }
2143
2144         /* if we are implementing XON/XOFF, send the start character */
2145         if (I_IXOFF(tty)) {
2146                 unsigned char start_char = START_CHAR(tty);
2147                 status = edge_write (port, 0, &start_char, 1);
2148                 if (status <= 0) {
2149                         return;
2150                 }
2151         }
2152
2153         /* if we are implementing RTS/CTS, toggle that line */
2154         if (tty->termios->c_cflag & CRTSCTS) {
2155                 status = TISetRts (edge_port);
2156         }
2157
2158         port->read_urb->dev = port->serial->dev;
2159         status = usb_submit_urb (port->read_urb, GFP_ATOMIC);
2160         if (status) {
2161                 dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2162         }
2163 }
2164
2165
2166 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2167 {
2168         struct ump_uart_config *config;
2169         struct tty_struct *tty;
2170         int baud;
2171         int round;
2172         unsigned cflag;
2173         int status;
2174         int port_number = edge_port->port->number - edge_port->port->serial->minor;
2175
2176         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2177
2178         tty = edge_port->port->tty;
2179         if ((!tty) ||
2180             (!tty->termios)) {
2181                 dbg("%s - no tty structures", __FUNCTION__);
2182                 return;
2183         }
2184
2185         config = kmalloc (sizeof (*config), GFP_KERNEL);
2186         if (!config) {
2187                 dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
2188                 return;
2189         }
2190
2191         cflag = tty->termios->c_cflag;
2192
2193         config->wFlags = 0;
2194
2195         /* These flags must be set */
2196         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2197         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2198         config->bUartMode = 0;
2199
2200         switch (cflag & CSIZE) {
2201                 case CS5:
2202                             config->bDataBits = UMP_UART_CHAR5BITS;
2203                             dbg ("%s - data bits = 5", __FUNCTION__);
2204                             break;
2205                 case CS6:
2206                             config->bDataBits = UMP_UART_CHAR6BITS;
2207                             dbg ("%s - data bits = 6", __FUNCTION__);
2208                             break;
2209                 case CS7:
2210                             config->bDataBits = UMP_UART_CHAR7BITS;
2211                             dbg ("%s - data bits = 7", __FUNCTION__);
2212                             break;
2213                 default:
2214                 case CS8:
2215                             config->bDataBits = UMP_UART_CHAR8BITS;
2216                             dbg ("%s - data bits = 8", __FUNCTION__);
2217                             break;
2218         }
2219
2220         if (cflag & PARENB) {
2221                 if (cflag & PARODD) {
2222                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2223                         config->bParity = UMP_UART_ODDPARITY;
2224                         dbg("%s - parity = odd", __FUNCTION__);
2225                 } else {
2226                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2227                         config->bParity = UMP_UART_EVENPARITY;
2228                         dbg("%s - parity = even", __FUNCTION__);
2229                 }
2230         } else {
2231                 config->bParity = UMP_UART_NOPARITY;
2232                 dbg("%s - parity = none", __FUNCTION__);
2233         }
2234
2235         if (cflag & CSTOPB) {
2236                 config->bStopBits = UMP_UART_STOPBIT2;
2237                 dbg("%s - stop bits = 2", __FUNCTION__);
2238         } else {
2239                 config->bStopBits = UMP_UART_STOPBIT1;
2240                 dbg("%s - stop bits = 1", __FUNCTION__);
2241         }
2242
2243         /* figure out the flow control settings */
2244         if (cflag & CRTSCTS) {
2245                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2246                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2247                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2248         } else {
2249                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2250         }
2251
2252         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2253         if (I_IXOFF(tty) || I_IXON(tty)) {
2254                 config->cXon  = START_CHAR(tty);
2255                 config->cXoff = STOP_CHAR(tty);
2256
2257                 /* if we are implementing INBOUND XON/XOFF */
2258                 if (I_IXOFF(tty)) {
2259                         config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2260                         dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2261                              __FUNCTION__, config->cXon, config->cXoff);
2262                 } else {
2263                         dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2264                 }
2265
2266                 /* if we are implementing OUTBOUND XON/XOFF */
2267                 if (I_IXON(tty)) {
2268                         config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2269                         dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2270                              __FUNCTION__, config->cXon, config->cXoff);
2271                 } else {
2272                         dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2273                 }
2274         }
2275
2276         /* Round the baud rate */
2277         baud = tty_get_baud_rate(tty);
2278         if (!baud) {
2279                 /* pick a default, any default... */
2280                 baud = 9600;
2281         }
2282         config->wBaudRate = (__u16)(461550L / baud);
2283         round = 4615500L / baud;
2284         if ((round - (config->wBaudRate * 10)) >= 5)
2285                 config->wBaudRate++;
2286
2287         dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2288
2289         dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2290         dbg ("wFlags:    0x%x", config->wFlags);
2291         dbg ("bDataBits:   %d", config->bDataBits);
2292         dbg ("bParity:     %d", config->bParity);
2293         dbg ("bStopBits:   %d", config->bStopBits);
2294         dbg ("cXon:        %d", config->cXon);
2295         dbg ("cXoff:       %d", config->cXoff);
2296         dbg ("bUartMode:   %d", config->bUartMode);
2297
2298         /* move the word values into big endian mode */
2299         cpu_to_be16s (&config->wFlags);
2300         cpu_to_be16s (&config->wBaudRate);
2301
2302         status = TIWriteCommandSync (edge_port->port->serial->dev,
2303                                 UMPC_SET_CONFIG,
2304                                 (__u8)(UMPM_UART1_PORT + port_number),
2305                                 0,
2306                                 (__u8 *)config,
2307                                 sizeof(*config));
2308         if (status) {
2309                 dbg ("%s - error %d when trying to write config to device",
2310                      __FUNCTION__, status);
2311         }
2312
2313         kfree (config);
2314
2315         return;
2316 }
2317
2318 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
2319 {
2320         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2321         struct tty_struct *tty = port->tty;
2322         unsigned int cflag;
2323
2324         if (!port->tty || !port->tty->termios) {
2325                 dbg ("%s - no tty or termios", __FUNCTION__);
2326                 return;
2327         }
2328
2329         cflag = tty->termios->c_cflag;
2330         /* check that they really want us to change something */
2331         if (old_termios) {
2332                 if ((cflag == old_termios->c_cflag) &&
2333                     (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
2334                         dbg ("%s - nothing to change", __FUNCTION__);
2335                         return;
2336                 }
2337         }
2338
2339         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2340             tty->termios->c_cflag,
2341             RELEVANT_IFLAG(tty->termios->c_iflag));
2342         if (old_termios) {
2343                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2344                     old_termios->c_cflag,
2345                     RELEVANT_IFLAG(old_termios->c_iflag));
2346         }
2347
2348         dbg("%s - port %d", __FUNCTION__, port->number);
2349
2350         if (edge_port == NULL)
2351                 return;
2352
2353         /* change the port settings to the new ones specified */
2354         change_port_settings (edge_port, old_termios);
2355
2356         return;
2357 }
2358
2359 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2360 {
2361         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2362         unsigned int mcr;
2363
2364         dbg("%s - port %d", __FUNCTION__, port->number);
2365
2366         mcr = edge_port->shadow_mcr;
2367         if (set & TIOCM_RTS)
2368                 mcr |= MCR_RTS;
2369         if (set & TIOCM_DTR)
2370                 mcr |= MCR_DTR;
2371         if (set & TIOCM_LOOP)
2372                 mcr |= MCR_LOOPBACK;
2373
2374         if (clear & TIOCM_RTS)
2375                 mcr &= ~MCR_RTS;
2376         if (clear & TIOCM_DTR)
2377                 mcr &= ~MCR_DTR;
2378         if (clear & TIOCM_LOOP)
2379                 mcr &= ~MCR_LOOPBACK;
2380
2381         edge_port->shadow_mcr = mcr;
2382
2383         TIRestoreMCR (edge_port, mcr);
2384
2385         return 0;
2386 }
2387
2388 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2389 {
2390         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2391         unsigned int result = 0;
2392         unsigned int msr;
2393         unsigned int mcr;
2394
2395         dbg("%s - port %d", __FUNCTION__, port->number);
2396
2397         msr = edge_port->shadow_msr;
2398         mcr = edge_port->shadow_mcr;
2399         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2400                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2401                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2402                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2403                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2404                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2405
2406
2407         dbg("%s -- %x", __FUNCTION__, result);
2408
2409         return result;
2410 }
2411
2412 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
2413 {
2414         struct serial_struct tmp;
2415
2416         if (!retinfo)
2417                 return -EFAULT;
2418
2419         memset(&tmp, 0, sizeof(tmp));
2420
2421         tmp.type                = PORT_16550A;
2422         tmp.line                = edge_port->port->serial->minor;
2423         tmp.port                = edge_port->port->number;
2424         tmp.irq                 = 0;
2425         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2426         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2427         tmp.baud_base           = 9600;
2428         tmp.close_delay         = 5*HZ;
2429         tmp.closing_wait        = 30*HZ;
2430 //      tmp.custom_divisor      = state->custom_divisor;
2431 //      tmp.hub6                = state->hub6;
2432 //      tmp.io_type             = state->io_type;
2433
2434
2435         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2436                 return -EFAULT;
2437         return 0;
2438 }
2439
2440 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2441 {
2442         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2443         struct async_icount cnow;
2444         struct async_icount cprev;
2445
2446         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2447
2448         switch (cmd) {
2449                 case TIOCINQ:
2450                         dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2451 //                      return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2452                         break;
2453
2454                 case TIOCSERGETLSR:
2455                         dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2456 //                      return get_lsr_info(edge_port, (unsigned int *) arg);
2457                         break;
2458
2459                 case TIOCGSERIAL:
2460                         dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2461                         return get_serial_info(edge_port, (struct serial_struct __user *) arg);
2462                         break;
2463
2464                 case TIOCSSERIAL:
2465                         dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2466                         break;
2467
2468                 case TIOCMIWAIT:
2469                         dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2470                         cprev = edge_port->icount;
2471                         while (1) {
2472                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
2473                                 /* see if a signal did it */
2474                                 if (signal_pending(current))
2475                                         return -ERESTARTSYS;
2476                                 cnow = edge_port->icount;
2477                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2478                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2479                                         return -EIO; /* no change => error */
2480                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2481                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2482                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2483                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2484                                         return 0;
2485                                 }
2486                                 cprev = cnow;
2487                         }
2488                         /* not reached */
2489                         break;
2490
2491                 case TIOCGICOUNT:
2492                         dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2493                              port->number, edge_port->icount.rx, edge_port->icount.tx);
2494                         if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2495                                 return -EFAULT;
2496                         return 0;
2497         }
2498
2499         return -ENOIOCTLCMD;
2500 }
2501
2502 static void edge_break (struct usb_serial_port *port, int break_state)
2503 {
2504         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2505         int status;
2506
2507         dbg ("%s - state = %d", __FUNCTION__, break_state);
2508
2509         /* chase the port close */
2510         TIChasePort (edge_port);
2511
2512         if (break_state == -1) {
2513                 status = TISetBreak (edge_port);
2514         } else {
2515                 status = TIClearBreak (edge_port);
2516         }
2517         if (status) {
2518                 dbg ("%s - error %d sending break set/clear command.",
2519                      __FUNCTION__, status);
2520         }
2521 }
2522
2523 static int edge_startup (struct usb_serial *serial)
2524 {
2525         struct edgeport_serial *edge_serial;
2526         struct edgeport_port *edge_port;
2527         struct usb_device *dev;
2528         int status;
2529         int i;
2530
2531         dev = serial->dev;
2532
2533         /* create our private serial structure */
2534         edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2535         if (edge_serial == NULL) {
2536                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2537                 return -ENOMEM;
2538         }
2539         memset (edge_serial, 0, sizeof(struct edgeport_serial));
2540         edge_serial->serial = serial;
2541         usb_set_serial_data(serial, edge_serial);
2542
2543         status = TIDownloadFirmware (edge_serial);
2544         if (status) {
2545                 kfree (edge_serial);
2546                 return status;
2547         }
2548
2549         /* set up our port private structures */
2550         for (i = 0; i < serial->num_ports; ++i) {
2551                 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2552                 if (edge_port == NULL) {
2553                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2554                         return -ENOMEM;
2555                 }
2556                 memset (edge_port, 0, sizeof(struct edgeport_port));
2557                 edge_port->port = serial->port[i];
2558                 edge_port->edge_serial = edge_serial;
2559                 usb_set_serial_port_data(serial->port[i], edge_port);
2560         }
2561
2562         return 0;
2563 }
2564
2565 static void edge_shutdown (struct usb_serial *serial)
2566 {
2567         int i;
2568
2569         dbg ("%s", __FUNCTION__);
2570
2571         for (i=0; i < serial->num_ports; ++i) {
2572                 kfree (usb_get_serial_port_data(serial->port[i]));
2573                 usb_set_serial_port_data(serial->port[i], NULL);
2574         }
2575         kfree (usb_get_serial_data(serial));
2576         usb_set_serial_data(serial, NULL);
2577 }
2578
2579
2580 static struct usb_serial_device_type edgeport_1port_device = {
2581         .owner                  = THIS_MODULE,
2582         .name                   = "Edgeport TI 1 port adapter",
2583         .short_name             = "edgeport_ti_1",
2584         .id_table               = edgeport_1port_id_table,
2585         .num_interrupt_in       = 1,
2586         .num_bulk_in            = 1,
2587         .num_bulk_out           = 1,
2588         .num_ports              = 1,
2589         .open                   = edge_open,
2590         .close                  = edge_close,
2591         .throttle               = edge_throttle,
2592         .unthrottle             = edge_unthrottle,
2593         .attach                 = edge_startup,
2594         .shutdown               = edge_shutdown,
2595         .ioctl                  = edge_ioctl,
2596         .set_termios            = edge_set_termios,
2597         .tiocmget               = edge_tiocmget,
2598         .tiocmset               = edge_tiocmset,
2599         .write                  = edge_write,
2600         .write_room             = edge_write_room,
2601         .chars_in_buffer        = edge_chars_in_buffer,
2602         .break_ctl              = edge_break,
2603 };
2604
2605 static struct usb_serial_device_type edgeport_2port_device = {
2606         .owner                  = THIS_MODULE,
2607         .name                   = "Edgeport TI 2 port adapter",
2608         .short_name             = "edgeport_ti_2",
2609         .id_table               = edgeport_2port_id_table,
2610         .num_interrupt_in       = 1,
2611         .num_bulk_in            = 2,
2612         .num_bulk_out           = 2,
2613         .num_ports              = 2,
2614         .open                   = edge_open,
2615         .close                  = edge_close,
2616         .throttle               = edge_throttle,
2617         .unthrottle             = edge_unthrottle,
2618         .attach                 = edge_startup,
2619         .shutdown               = edge_shutdown,
2620         .ioctl                  = edge_ioctl,
2621         .set_termios            = edge_set_termios,
2622         .tiocmget               = edge_tiocmget,
2623         .tiocmset               = edge_tiocmset,
2624         .write                  = edge_write,
2625         .write_room             = edge_write_room,
2626         .chars_in_buffer        = edge_chars_in_buffer,
2627         .break_ctl              = edge_break,
2628 };
2629
2630
2631 static int __init edgeport_init(void)
2632 {
2633         int retval;
2634         retval = usb_serial_register(&edgeport_1port_device);
2635         if (retval)
2636                 goto failed_1port_device_register;
2637         retval = usb_serial_register(&edgeport_2port_device);
2638         if (retval)
2639                 goto failed_2port_device_register;
2640         retval = usb_register(&io_driver);
2641         if (retval)
2642                 goto failed_usb_register;
2643         info(DRIVER_DESC " " DRIVER_VERSION);
2644         return 0;
2645 failed_usb_register:
2646         usb_serial_deregister(&edgeport_2port_device);
2647 failed_2port_device_register:
2648         usb_serial_deregister(&edgeport_1port_device);
2649 failed_1port_device_register:
2650         return retval;
2651 }
2652
2653 static void __exit edgeport_exit (void)
2654 {
2655         usb_deregister (&io_driver);
2656         usb_serial_deregister (&edgeport_1port_device);
2657         usb_serial_deregister (&edgeport_2port_device);
2658 }
2659
2660 module_init(edgeport_init);
2661 module_exit(edgeport_exit);
2662
2663 /* Module information */
2664 MODULE_AUTHOR(DRIVER_AUTHOR);
2665 MODULE_DESCRIPTION(DRIVER_DESC);
2666 MODULE_LICENSE("GPL");
2667
2668 module_param(debug, bool, S_IRUGO | S_IWUSR);
2669 MODULE_PARM_DESC(debug, "Debug enabled or not");
2670
2671 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2672 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
2673