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
  39 #ifdef CONFIG_USB_SERIAL_DEBUG
  40         static int debug = 1;
  41 #else
  42         static int debug;
  43 #endif
  44
  45 #include "usb-serial.h"
  46
  47 #include "io_16654.h"
  48 #include "io_usbvend.h"
  49 #include "io_ti.h"
  50
  51 /*
  52  * Version Information
  53  */
  54 #define DRIVER_VERSION "v0.2"
  55 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  56 #define DRIVER_DESC "Edgeport USB Serial Driver"
  57
  58
  59 /* firmware image code */
  60 #define IMAGE_VERSION_NAME      PagableOperationalCodeImageVersion
  61 #define IMAGE_ARRAY_NAME        PagableOperationalCodeImage
  62 #define IMAGE_SIZE              PagableOperationalCodeSize
  63 #include "io_fw_down3.h"        /* Define array OperationalCodeImage[] */
  64
  65 #define EPROM_PAGE_SIZE         64
  66
  67
  68 struct edgeport_uart_buf_desc {
  69         __u32 count;            // Number of bytes currently in buffer
  70 };
  71
  72 /* different hardware types */
  73 #define HARDWARE_TYPE_930       0
  74 #define HARDWARE_TYPE_TIUMP     1
  75
  76 // IOCTL_PRIVATE_TI_GET_MODE Definitions
  77 #define TI_MODE_CONFIGURING     0   // Device has not entered start device
  78 #define TI_MODE_BOOT            1   // Staying in boot mode
  79 #define TI_MODE_DOWNLOAD        2   // Made it to download mode
  80 #define TI_MODE_TRANSITIONING   3   // Currently in boot mode but transitioning to download mode
  81
  82
  83 /* Product information read from the Edgeport */
  84 struct product_info
  85 {
  86         int     TiMode;                 // Current TI Mode
  87         __u8    hardware_type;          // Type of hardware
  88 } __attribute__((packed));
  89
  90
  91 struct edgeport_port {
  92         __u16 uart_base;
  93         __u16 dma_address;
  94         __u8 shadow_msr;
  95         __u8 shadow_mcr;
  96         __u8 shadow_lsr;
  97         __u8 lsr_mask;
  98         __u32 ump_read_timeout;         /* Number of miliseconds the UMP will
  99                                            wait without data before completing
 100                                            a read short */
 101         int baud_rate;
 102         int close_pending;
 103         int lsr_event;
 104         struct edgeport_uart_buf_desc tx;
 105         struct async_icount     icount;
 106         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
 107                                                    waiting for msr change to
 108                                                    happen */
 109         struct edgeport_serial  *edge_serial;
 110         struct usb_serial_port  *port;
 111 };
 112
 113 struct edgeport_serial {
 114         struct product_info product_info;
 115         u8 TI_I2C_Type;                 // Type of I2C in UMP
 116         u8 TiReadI2C;                   // Set to TRUE if we have read the I2c in Boot Mode
 117         int num_ports_open;
 118         struct usb_serial *serial;
 119 };
 120
 121
 122 /* Devices that this driver supports */
 123 static struct usb_device_id edgeport_1port_id_table [] = {
 124         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 125         { }
 126 };
 127
 128 static struct usb_device_id edgeport_2port_id_table [] = {
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 132         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 133         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
 134         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
 135         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 136         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
 137         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
 138         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 141         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
 142         { }
 143 };
 144
 145 /* Devices that this driver supports */
 146 static struct usb_device_id id_table_combined [] = {
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 151         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
 157         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 160         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
 161         { }
 162 };
 163
 164 MODULE_DEVICE_TABLE (usb, id_table_combined);
 165
 166 static struct usb_driver io_driver = {
 167         .owner =        THIS_MODULE,
 168         .name =         "io_ti",
 169         .probe =        usb_serial_probe,
 170         .disconnect =   usb_serial_disconnect,
 171         .id_table =     id_table_combined,
 172 };
 173
 174
 175 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
 176
 177 static int TIStayInBootMode = 0;
 178 static int ignore_cpu_rev = 0;
 179
 180
 181
 182 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
 183
 184 static int TIReadVendorRequestSync (struct usb_device *dev,
 185                                 __u8            request,
 186                                 __u16           value,
 187                                 __u16           index,
 188                                 u8              *data,
 189                                 int             size)
 190 {
 191         int status;
 192
 193         status = usb_control_msg (dev,
 194                                 usb_rcvctrlpipe(dev, 0),
 195                                 request,
 196                                 (USB_TYPE_VENDOR |
 197                                  USB_RECIP_DEVICE |
 198                                  USB_DIR_IN),
 199                                 value,
 200                                 index,
 201                                 data,
 202                                 size,
 203                                 HZ);
 204         if (status < 0)
 205                 return status;
 206         if (status != size) {
 207                 dbg ("%s - wanted to write %d, but only wrote %d",
 208                      __FUNCTION__, size, status);
 209                 return -ECOMM;
 210         }
 211         return 0;
 212 }
 213
 214 static int TISendVendorRequestSync (struct usb_device *dev,
 215                                 __u8            request,
 216                                 __u16           value,
 217                                 __u16           index,
 218                                 u8              *data,
 219                                 int             size)
 220 {
 221         int status;
 222
 223         status = usb_control_msg (dev,
 224                                 usb_sndctrlpipe(dev, 0),
 225                                 request,
 226                                 (USB_TYPE_VENDOR |
 227                                  USB_RECIP_DEVICE |
 228                                  USB_DIR_OUT),
 229                                 value,
 230                                 index,
 231                                 data,
 232                                 size,
 233                                 HZ);
 234
 235         if (status < 0)
 236                 return status;
 237         if (status != size) {
 238                 dbg ("%s - wanted to write %d, but only wrote %d",
 239                      __FUNCTION__, size, status);
 240                 return -ECOMM;
 241         }
 242         return 0;
 243 }
 244
 245 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
 246                                 __u8 moduleid, __u16 value, u8 *data,
 247                                 int size)
 248 {
 249         return TISendVendorRequestSync (dev,
 250                                           command,                      // Request
 251                                           value,                        // wValue
 252                                           moduleid,                     // wIndex
 253                                           data,                         // TransferBuffer
 254                                           size);                        // TransferBufferLength
 255
 256 }
 257
 258
 259 /* clear tx/rx buffers and fifo in TI UMP */
 260 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
 261 {
 262         int port_number = port->number - port->serial->minor;
 263
 264         dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
 265
 266         return TIWriteCommandSync (port->serial->dev,
 267                                         UMPC_PURGE_PORT,
 268                                         (__u8)(UMPM_UART1_PORT + port_number),
 269                                         mask,
 270                                         NULL,
 271                                         0);
 272 }
 273
 274 /**
 275  * TIReadDownloadMemory - Read edgeport memory from TI chip
 276  * @dev: usb device pointer
 277  * @start_address: Device CPU address at which to read
 278  * @length: Length of above data
 279  * @address_type: Can read both XDATA and I2C
 280  * @buffer: pointer to input data buffer
 281  */
 282 int TIReadDownloadMemory (struct usb_device *dev, int start_address, int length,
 283                           __u8 address_type, __u8 *buffer)
 284 {
 285         int status = 0;
 286         __u8 read_length;
 287         __u16 be_start_address;
 288
 289         dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
 290
 291         /* Read in blocks of 64 bytes
 292          * (TI firmware can't handle more than 64 byte reads)
 293          */
 294         while (length) {
 295                 if (length > 64)
 296                         read_length= 64;
 297                 else
 298                         read_length = (__u8)length;
 299
 300                 if (read_length > 1) {
 301                         dbg ("%s - @ %x for %d", __FUNCTION__,
 302                              start_address, read_length);
 303                 }
 304                 be_start_address = cpu_to_be16 (start_address);
 305                 status = TIReadVendorRequestSync (dev,
 306                                                   UMPC_MEMORY_READ,     // Request
 307                                                   (__u16)address_type,  // wValue (Address type)
 308                                                   be_start_address,     // wIndex (Address to read)
 309                                                   buffer,               // TransferBuffer
 310                                                   read_length); // TransferBufferLength
 311
 312                 if (status) {
 313                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 314                         return status;
 315                 }
 316
 317                 if (read_length > 1) {
 318                         usb_serial_debug_data (__FILE__, __FUNCTION__,
 319                                                read_length, buffer);
 320                 }
 321
 322                 /* Update pointers/length */
 323                 start_address += read_length;
 324                 buffer += read_length;
 325                 length -= read_length;
 326         }
 327
 328         return status;
 329 }
 330
 331 int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
 332 {
 333         return TIReadDownloadMemory (dev,
 334                                      start_address,
 335                                      length,
 336                                      DTK_ADDR_SPACE_XDATA,
 337                                      buffer);
 338 }
 339
 340 /* Read edgeport memory to a given block */
 341 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
 342 {
 343         int status = 0;
 344         int i;
 345
 346         for (i=0; i< length; i++) {
 347                 status = TIReadVendorRequestSync (serial->serial->dev,
 348                                         UMPC_MEMORY_READ,               // Request
 349                                         serial->TI_I2C_Type,            // wValue (Address type)
 350                                         (__u16)(start_address+i),       // wIndex
 351                                         &buffer[i],                     // TransferBuffer
 352                                         0x01);                          // TransferBufferLength
 353                 if (status) {
 354                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 355                         return status;
 356                 }
 357         }
 358
 359         dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
 360         usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
 361
 362         serial->TiReadI2C = 1;
 363
 364         return status;
 365 }
 366
 367 /* Write given block to TI EPROM memory */
 368 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 369 {
 370         int status = 0;
 371         int i;
 372         __u8 temp;
 373
 374         /* Must do a read before write */
 375         if (!serial->TiReadI2C) {
 376                 status = TIReadBootMemory(serial, 0, 1, &temp);
 377                 if (status)
 378                         return status;
 379         }
 380
 381         for (i=0; i < length; ++i) {
 382                 status = TISendVendorRequestSync (serial->serial->dev,
 383                                                 UMPC_MEMORY_WRITE,              // Request
 384                                                 buffer[i],                      // wValue
 385                                                 (__u16)(i+start_address),       // wIndex
 386                                                 NULL,                           // TransferBuffer
 387                                                 0);                             // TransferBufferLength
 388                 if (status)
 389                         return status;
 390         }
 391
 392         dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
 393         usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
 394
 395         return status;
 396 }
 397
 398
 399 /* Write edgeport I2C memory to TI chip */
 400 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
 401 {
 402         int status = 0;
 403         int write_length;
 404         __u16 be_start_address;
 405
 406         /* We can only send a maximum of 1 aligned byte page at a time */
 407
 408         /* calulate the number of bytes left in the first page */
 409         write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
 410
 411         if (write_length > length)
 412                 write_length = length;
 413
 414         dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 415         usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
 416
 417         /* Write first page */
 418         be_start_address = cpu_to_be16 (start_address);
 419         status = TISendVendorRequestSync (serial->serial->dev,
 420                                         UMPC_MEMORY_WRITE,      // Request
 421                                         (__u16)address_type,    // wValue
 422                                         be_start_address,       // wIndex
 423                                         buffer,                 // TransferBuffer
 424                                         write_length);
 425         if (status) {
 426                 dbg ("%s - ERROR %d", __FUNCTION__, status);
 427                 return status;
 428         }
 429
 430         length          -= write_length;
 431         start_address   += write_length;
 432         buffer          += write_length;
 433
 434         /* We should be aligned now -- can write max page size bytes at a time */
 435         while (length) {
 436                 if (length > EPROM_PAGE_SIZE)
 437                         write_length = EPROM_PAGE_SIZE;
 438                 else
 439                         write_length = length;
 440
 441                 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 442                 usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
 443
 444                 /* Write next page */
 445                 be_start_address = cpu_to_be16 (start_address);
 446                 status = TISendVendorRequestSync (serial->serial->dev,
 447                                                 UMPC_MEMORY_WRITE,      // Request
 448                                                 (__u16)address_type,    // wValue
 449                                                 be_start_address,       // wIndex
 450                                                 buffer,                 // TransferBuffer
 451                                                 write_length);          // TransferBufferLength
 452                 if (status) {
 453                         dbg ("%s - ERROR %d", __FUNCTION__, status);
 454                         return status;
 455                 }
 456
 457                 length          -= write_length;
 458                 start_address   += write_length;
 459                 buffer          += write_length;
 460         }
 461         return status;
 462 }
 463
 464 /* Examine the UMP DMA registers and LSR
 465  *
 466  * Check the MSBit of the X and Y DMA byte count registers.
 467  * A zero in this bit indicates that the TX DMA buffers are empty
 468  * then check the TX Empty bit in the UART.
 469  */
 470 static int TIIsTxActive (struct edgeport_port *port)
 471 {
 472         int status;
 473         struct out_endpoint_desc_block *oedb;
 474         __u8 *lsr;
 475         int bytes_left = 0;
 476
 477         oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
 478         if (!oedb) {
 479                 dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
 480                 return -ENOMEM;
 481         }
 482
 483         lsr = kmalloc (1, GFP_KERNEL);  /* Sigh, that's right, just one byte,
 484                                            as not all platforms can do DMA
 485                                            from stack */
 486         if (!lsr) {
 487                 kfree(oedb);
 488                 return -ENOMEM;
 489         }
 490         /* Read the DMA Count Registers */
 491         status = TIReadRam (port->port->serial->dev,
 492                             port->dma_address,
 493                             sizeof( *oedb),
 494                             (void *)oedb);
 495
 496         if (status)
 497                 goto exit_is_tx_active;
 498
 499         dbg ("%s - XByteCount    0x%X", __FUNCTION__, oedb->XByteCount);
 500
 501         /* and the LSR */
 502         status = TIReadRam (port->port->serial->dev,
 503                             port->uart_base + UMPMEM_OFFS_UART_LSR,
 504                             1,
 505                             lsr);
 506
 507         if (status)
 508                 goto exit_is_tx_active;
 509         dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
 510
 511         /* If either buffer has data or we are transmitting then return TRUE */
 512         if ((oedb->XByteCount & 0x80 ) != 0 )
 513                 bytes_left += 64;
 514
 515         if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
 516                 bytes_left += 1;
 517
 518         /* We return Not Active if we get any kind of error */
 519 exit_is_tx_active:
 520         dbg ("%s - return %d", __FUNCTION__, bytes_left );
 521
 522         kfree(lsr);
 523         kfree(oedb);
 524         return bytes_left;
 525 }
 526
 527 static void TIChasePort(struct edgeport_port *port)
 528 {
 529         int loops;
 530         int last_count;
 531         int write_size;
 532
 533 restart_tx_loop:
 534         // Base the LoopTime on the baud rate
 535         if (port->baud_rate == 0)
 536                 port->baud_rate = 1200;
 537
 538         write_size = port->tx.count;
 539         loops = max(100, (100*write_size)/(port->baud_rate/10));
 540         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 541              write_size, port->baud_rate, loops);
 542
 543         while (1) {
 544                 // Save Last count
 545                 last_count = port->tx.count;
 546
 547                 dbg ("%s - Tx Buffer Size = %d loops = %d", __FUNCTION__,
 548                      last_count, loops);
 549
 550                 /* Is the Edgeport Buffer empty? */
 551                 if (port->tx.count == 0)
 552                         break;
 553
 554                 /* Block the thread for 10ms */
 555                 wait_ms (10);
 556
 557                 if (last_count == port->tx.count) {
 558                         /* No activity.. count down. */
 559                         --loops;
 560                         if (loops == 0) {
 561                                 dbg ("%s - Wait for TxEmpty - TIMEOUT",
 562                                      __FUNCTION__);
 563                                 return;
 564                         }
 565                 } else {
 566                         /* Reset timeout value back to a minimum of 1 second */
 567                         dbg ("%s - Wait for TxEmpty  Reset Count", __FUNCTION__);
 568                         goto restart_tx_loop;
 569                 }
 570         }
 571
 572         dbg ("%s - Local Tx Buffer Empty -- Waiting for TI UMP to EMPTY X/Y and FIFO",
 573              __FUNCTION__);
 574
 575         write_size = TIIsTxActive (port);
 576         loops = max(50, (100*write_size)/(port->baud_rate/10));
 577         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 578              write_size, port->baud_rate, loops);
 579
 580         while (1) {
 581                 /* This function takes 4 ms; */
 582                 if (!TIIsTxActive (port)) {
 583                         /* Delay a few char times */
 584                         wait_ms (50);
 585                         dbg ("%s - Empty", __FUNCTION__);
 586                         return;
 587                 }
 588
 589                 --loops;
 590                 if (loops == 0) {
 591                         dbg ("%s - TIMEOUT", __FUNCTION__);
 592                         return;
 593                 }
 594         }
 595 }
 596
 597 static int TIChooseConfiguration (struct usb_device *dev)
 598 {
 599         // There may be multiple configurations on this device, in which case
 600         // we would need to read and parse all of them to find out which one
 601         // we want. However, we just support one config at this point,
 602         // configuration # 1, which is Config Descriptor 0.
 603
 604         dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
 605         dbg ("%s - MAX Power            = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
 606
 607         if (dev->config->desc.bNumInterfaces != 1) {
 608                 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
 609                 return -ENODEV;
 610         }
 611
 612         return 0;
 613 }
 614
 615 int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 616 {
 617         int status;
 618
 619         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 620                 status = TIReadDownloadMemory (serial->serial->dev,
 621                                                start_address,
 622                                                length,
 623                                                serial->TI_I2C_Type,
 624                                                buffer);
 625         } else {
 626                 status = TIReadBootMemory (serial,
 627                                            start_address,
 628                                            length,
 629                                            buffer);
 630         }
 631
 632         return status;
 633 }
 634
 635 int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 636 {
 637         if (serial->product_info.TiMode == TI_MODE_BOOT)
 638                 return TIWriteBootMemory (serial,
 639                                           start_address,
 640                                           length,
 641                                           buffer);
 642
 643         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 644                 return TIWriteDownloadI2C (serial,
 645                                            start_address,
 646                                            length,
 647                                            serial->TI_I2C_Type,
 648                                            buffer);
 649
 650         return -EINVAL;
 651 }
 652
 653
 654
 655 /* Read a descriptor header from I2C based on type */
 656 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
 657 {
 658         int start_address;
 659         int status;
 660
 661         /* Search for requested descriptor in I2C */
 662         start_address = 2;
 663         do {
 664                 status = TIReadRom (serial,
 665                                    start_address,
 666                                    sizeof(struct ti_i2c_desc),
 667                                    (__u8 *)rom_desc );
 668                 if (status)
 669                         return 0;
 670
 671                 if (rom_desc->Type == desc_type)
 672                         return start_address;
 673
 674                 start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
 675
 676         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 677
 678         return 0;
 679 }
 680
 681 /* Validate descriptor checksum */
 682 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 683 {
 684         __u16 i;
 685         __u8 cs = 0;
 686
 687         for (i=0; i < rom_desc->Size; i++) {
 688                 cs = (__u8)(cs + buffer[i]);
 689         }
 690         if (cs != rom_desc->CheckSum) {
 691                 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
 692                 return -EINVAL;
 693         }
 694         return 0;
 695 }
 696
 697 /* Make sure that the I2C image is good */
 698 static int TiValidateI2cImage (struct edgeport_serial *serial)
 699 {
 700         struct device *dev = &serial->serial->dev->dev;
 701         int status = 0;
 702         struct ti_i2c_desc *rom_desc;
 703         int start_address = 2;
 704         __u8 *buffer;
 705
 706         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 707         if (!rom_desc) {
 708                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 709                 return -ENOMEM;
 710         }
 711         buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
 712         if (!buffer) {
 713                 dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
 714                 kfree (rom_desc);
 715                 return -ENOMEM;
 716         }
 717
 718         // Read the first byte (Signature0) must be 0x52
 719         status = TIReadRom (serial, 0, 1, buffer);
 720         if (status)
 721                 goto ExitTiValidateI2cImage;
 722
 723         if (*buffer != 0x52) {
 724                 dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
 725                 status = -ENODEV;
 726                 goto ExitTiValidateI2cImage;
 727         }
 728
 729         do {
 730                 // Validate the I2C
 731                 status = TIReadRom (serial,
 732                                 start_address,
 733                                 sizeof(struct ti_i2c_desc),
 734                                 (__u8 *)rom_desc);
 735                 if (status)
 736                         break;
 737
 738                 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
 739                         status = -ENODEV;
 740                         dbg ("%s - structure too big, erroring out.", __FUNCTION__);
 741                         break;
 742                 }
 743
 744                 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
 745
 746                 // Skip type 2 record
 747                 if ((rom_desc->Type & 0x0f) != I2C_DESC_TYPE_FIRMWARE_BASIC) {
 748                         // Read the descriptor data
 749                         status = TIReadRom(serial,
 750                                                 start_address+sizeof(struct ti_i2c_desc),
 751                                                 rom_desc->Size,
 752                                                 buffer);
 753                         if (status)
 754                                 break;
 755
 756                         status = ValidChecksum(rom_desc, buffer);
 757                         if (status)
 758                                 break;
 759                 }
 760                 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
 761
 762         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
 763
 764         if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
 765                 status = -ENODEV;
 766
 767 ExitTiValidateI2cImage:
 768         kfree (buffer);
 769         kfree (rom_desc);
 770         return status;
 771 }
 772
 773 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
 774 {
 775         int status;
 776         int start_address;
 777         struct ti_i2c_desc *rom_desc;
 778         struct edge_ti_manuf_descriptor *desc;
 779
 780         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 781         if (!rom_desc) {
 782                 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
 783                 return -ENOMEM;
 784         }
 785         start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
 786
 787         if (!start_address) {
 788                 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
 789                 status = -ENODEV;
 790                 goto exit;
 791         }
 792
 793         // Read the descriptor data
 794         status = TIReadRom (serial,
 795                                 start_address+sizeof(struct ti_i2c_desc),
 796                                 rom_desc->Size,
 797                                 buffer);
 798         if (status)
 799                 goto exit;
 800
 801         status = ValidChecksum(rom_desc, buffer);
 802
 803         desc = (struct edge_ti_manuf_descriptor *)buffer;
 804         dbg ( "%s - IonConfig      0x%x", __FUNCTION__, desc->IonConfig         );
 805         dbg ( "%s - Version          %d", __FUNCTION__, desc->Version           );
 806         dbg ( "%s - Cpu/Board      0x%x", __FUNCTION__, desc->CpuRev_BoardRev   );
 807         dbg ( "%s - NumPorts         %d", __FUNCTION__, desc->NumPorts          );
 808         dbg ( "%s - NumVirtualPorts  %d", __FUNCTION__, desc->NumVirtualPorts   );
 809         dbg ( "%s - TotalPorts       %d", __FUNCTION__, desc->TotalPorts        );
 810
 811 exit:
 812         kfree (rom_desc);
 813         return status;
 814 }
 815
 816 /* Build firmware header used for firmware update */
 817 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
 818 {
 819         __u8 *buffer;
 820         int buffer_size;
 821         int i;
 822         __u8 cs = 0;
 823         struct ti_i2c_desc *i2c_header;
 824         struct ti_i2c_image_header *img_header;
 825         struct ti_i2c_firmware_rec *firmware_rec;
 826
 827         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
 828         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
 829         // will download the latest firmware (padded to 15.5k) into the UMP ram.
 830         // And finally when the device comes back up in download mode the driver will cause
 831         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
 832         // the record type from 0xf2 to 0x02.
 833
 834         // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
 835         buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
 836
 837         buffer = kmalloc (buffer_size, GFP_KERNEL);
 838         if (!buffer) {
 839                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 840                 return -ENOMEM;
 841         }
 842
 843         // Set entire image of 0xffs
 844         memset (buffer, 0xff, buffer_size);
 845
 846         // Copy version number into firmware record
 847         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 848
 849         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 850         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 851
 852         // Pointer to fw_down memory image
 853         img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
 854
 855         memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
 856                 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
 857                 img_header->Length);
 858
 859         for (i=0; i < buffer_size; i++) {
 860                 cs = (__u8)(cs + buffer[i]);
 861         }
 862
 863         kfree (buffer);
 864
 865         // Build new header
 866         i2c_header =  (struct ti_i2c_desc *)header;
 867         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 868
 869         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 870         i2c_header->Size        = (__u16)buffer_size;
 871         i2c_header->CheckSum    = cs;
 872         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 873         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 874
 875         return 0;
 876 }
 877
 878 /* Try to figure out what type of I2c we have */
 879 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
 880 {
 881         int status;
 882         __u8 data;
 883
 884         // Try to read type 2
 885         status = TIReadVendorRequestSync (serial->serial->dev,
 886                                         UMPC_MEMORY_READ,               // Request
 887                                         DTK_ADDR_SPACE_I2C_TYPE_II,     // wValue (Address type)
 888                                         0,                              // wIndex
 889                                         &data,                          // TransferBuffer
 890                                         0x01);                          // TransferBufferLength
 891         if (status)
 892                 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
 893         else
 894                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 895         if ((!status) && data == 0x52) {
 896                 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
 897                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 898                 return 0;
 899         }
 900
 901         // Try to read type 3
 902         status = TIReadVendorRequestSync (serial->serial->dev,
 903                                         UMPC_MEMORY_READ,               // Request
 904                                         DTK_ADDR_SPACE_I2C_TYPE_III,    // wValue (Address type)
 905                                         0,                              // wIndex
 906                                         &data,                          // TransferBuffer
 907                                         0x01);                          // TransferBufferLength
 908         if (status)
 909                 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
 910         else
 911                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 912         if ((!status) && data == 0x52) {
 913                 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
 914                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 915                 return 0;
 916         }
 917
 918         dbg ("%s - Unknown", __FUNCTION__);
 919         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 920         return -ENODEV;
 921 }
 922
 923 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
 924 {
 925         int status;
 926
 927         status = usb_bulk_msg (serial->dev,
 928                                 usb_sndbulkpipe(serial->dev,
 929                                                 serial->port[0]->bulk_out_endpointAddress),
 930                                 buffer,
 931                                 length,
 932                                 num_sent,
 933                                 HZ);
 934         return status;
 935 }
 936
 937 /* Download given firmware image to the device (IN BOOT MODE) */
 938 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
 939 {
 940         int status = 0;
 941         int pos;
 942         int transfer;
 943         int done;
 944
 945         // Transfer firmware image
 946         for (pos = 0; pos < image_length; ) {
 947                 // Read the next buffer from file
 948                 transfer = image_length - pos;
 949                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 950                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 951
 952                 // Transfer data
 953                 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
 954                 if (status)
 955                         break;
 956                 // Advance buffer pointer
 957                 pos += done;
 958         }
 959
 960         return status;
 961 }
 962
 963 // FIXME!!!
 964 static int TIConfigureBootDevice (struct usb_device *dev)
 965 {
 966         return 0;
 967 }
 968
 969 /**
 970  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 971  *
 972  * This routine downloads the main operating code into the TI5052, using the
 973  * boot code already burned into E2PROM or ROM.
 974  */
 975 static int TIDownloadFirmware (struct edgeport_serial *serial)
 976 {
 977         struct device *dev = &serial->serial->dev->dev;
 978         int status = 0;
 979         int start_address;
 980         struct edge_ti_manuf_descriptor *ti_manuf_desc;
 981         struct usb_interface_descriptor *interface;
 982         int download_cur_ver;
 983         int download_new_ver;
 984
 985         /* This routine is entered by both the BOOT mode and the Download mode
 986          * We can determine which code is running by the reading the config
 987          * descriptor and if we have only one bulk pipe it is in boot mode
 988          */
 989         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
 990
 991         /* Default to type 2 i2c */
 992         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 993
 994         status = TIChooseConfiguration (serial->serial->dev);
 995         if (status)
 996                 return status;
 997
 998         interface = &serial->serial->dev->config->interface[0]->altsetting->desc;
 999         if (!interface) {
1000                 dev_err (&serial->serial->dev->dev, "%s - no interface set, error!", __FUNCTION__);
1001                 return -ENODEV;
1002         }
1003
1004         // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1005         // if we have more than one endpoint we are definitely in download mode
1006         if (interface->bNumEndpoints > 1)
1007                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1008         else
1009                 // Otherwise we will remain in configuring mode
1010                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1011
1012         // Save Download Version Number
1013         OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1014         OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1015         OperationalCodeImageVersion.BuildNumber  = PagableOperationalCodeImageVersion.BuildNumber;
1016
1017         /********************************************************************/
1018         /* Download Mode */
1019         /********************************************************************/
1020         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1021                 struct ti_i2c_desc *rom_desc;
1022
1023                 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1024
1025                 status = TiValidateI2cImage (serial);
1026                 if (status) {
1027                         dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1028                              __FUNCTION__);
1029                         return status;
1030                 }
1031
1032                 /* Validate Hardware version number
1033                  * Read Manufacturing Descriptor from TI Based Edgeport
1034                  */
1035                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1036                 if (!ti_manuf_desc) {
1037                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1038                         return -ENOMEM;
1039                 }
1040                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1041                 if (status) {
1042                         kfree (ti_manuf_desc);
1043                         return status;
1044                 }
1045
1046                 // Check version number of ION descriptor
1047                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1048                         dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1049                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1050                         kfree (ti_manuf_desc);
1051                         return -EINVAL;
1052                 }
1053
1054                 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1055                 if (!rom_desc) {
1056                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1057                         kfree (ti_manuf_desc);
1058                         return -ENOMEM;
1059                 }
1060
1061                 // Search for type 2 record (firmware record)
1062                 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1063                         struct ti_i2c_firmware_rec *firmware_version;
1064                         __u8 record;
1065
1066                         dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1067
1068                         firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1069                         if (!firmware_version) {
1070                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1071                                 kfree (rom_desc);
1072                                 kfree (ti_manuf_desc);
1073                                 return -ENOMEM;
1074                         }
1075
1076                         // Validate version number
1077                         // Read the descriptor data
1078                         status = TIReadRom (serial,
1079                                         start_address+sizeof(struct ti_i2c_desc),
1080                                         sizeof(struct ti_i2c_firmware_rec),
1081                                         (__u8 *)firmware_version);
1082                         if (status) {
1083                                 kfree (firmware_version);
1084                                 kfree (rom_desc);
1085                                 kfree (ti_manuf_desc);
1086                                 return status;
1087                         }
1088
1089                         // Check version number of download with current version in I2c
1090                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1091                                            (firmware_version->Ver_Minor);
1092                         download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1093                                            (OperationalCodeImageVersion.MinorVersion);
1094
1095                         dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
1096                              __FUNCTION__,
1097                              firmware_version->Ver_Major,
1098                              firmware_version->Ver_Minor,
1099                              OperationalCodeImageVersion.MajorVersion,
1100                              OperationalCodeImageVersion.MinorVersion);
1101
1102                         // Check if we have an old version in the I2C and update if necessary
1103                         if (download_cur_ver != download_new_ver) {
1104                                 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1105                                      __FUNCTION__,
1106                                      firmware_version->Ver_Major,
1107                                      firmware_version->Ver_Minor,
1108                                      OperationalCodeImageVersion.MajorVersion,
1109                                      OperationalCodeImageVersion.MinorVersion);
1110
1111                                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1112                                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1113                                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1114                                 // And finally when the device comes back up in download mode the driver will cause
1115                                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1116                                 // the record type from 0xf2 to 0x02.
1117
1118                                 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1119
1120                                 // Change the I2C Firmware record type to 0xf2 to trigger an update
1121                                 status = TIWriteRom (serial,
1122                                                         start_address,
1123                                                         sizeof(record),
1124                                                         &record);
1125                                 if (status) {
1126                                         kfree (firmware_version);
1127                                         kfree (rom_desc);
1128                                         kfree (ti_manuf_desc);
1129                                         return status;
1130                                 }
1131
1132                                 // verify the write -- must do this in order for write to
1133                                 // complete before we do the hardware reset
1134                                 status = TIReadRom (serial,
1135                                                         start_address,
1136                                                         sizeof(record),
1137                                                         &record);
1138
1139                                 if (status) {
1140                                         kfree (firmware_version);
1141                                         kfree (rom_desc);
1142                                         kfree (ti_manuf_desc);
1143                                         return status;
1144                                 }
1145
1146                                 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1147                                         dev_err (dev, "%s - error resetting device\n", __FUNCTION__);
1148                                         kfree (firmware_version);
1149                                         kfree (rom_desc);
1150                                         kfree (ti_manuf_desc);
1151                                         return -ENODEV;
1152                                 }
1153
1154                                 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1155
1156                                 // Reset UMP -- Back to BOOT MODE
1157                                 status = TISendVendorRequestSync (serial->serial->dev,
1158                                                                 UMPC_HARDWARE_RESET,    // Request
1159                                                                 0,                      // wValue
1160                                                                 0,                      // wIndex
1161                                                                 NULL,                   // TransferBuffer
1162                                                                 0);                     // TransferBufferLength
1163
1164                                 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1165
1166                                 /* return an error on purpose. */
1167                                 kfree (firmware_version);
1168                                 kfree (rom_desc);
1169                                 kfree (ti_manuf_desc);
1170                                 return -ENODEV;
1171                         }
1172                         kfree (firmware_version);
1173                 }
1174                 // Search for type 0xF2 record (firmware blank record)
1175                 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1176                         #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1177                         __u8 *header;
1178                         __u8 *vheader;
1179
1180                         header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
1181                         if (!header) {
1182                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1183                                 kfree (rom_desc);
1184                                 kfree (ti_manuf_desc);
1185                                 return -ENOMEM;
1186                         }
1187
1188                         vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1189                         if (!vheader) {
1190                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1191                                 kfree (header);
1192                                 kfree (rom_desc);
1193                                 kfree (ti_manuf_desc);
1194                                 return -ENOMEM;
1195                         }
1196
1197                         dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1198
1199                         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1200                         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1201                         // will download the latest firmware (padded to 15.5k) into the UMP ram.
1202                         // And finally when the device comes back up in download mode the driver will cause
1203                         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1204                         // the record type from 0xf2 to 0x02.
1205                         status = BuildI2CFirmwareHeader(header, dev);
1206                         if (status) {
1207                                 kfree (vheader);
1208                                 kfree (header);
1209                                 kfree (rom_desc);
1210                                 kfree (ti_manuf_desc);
1211                                 return status;
1212                         }
1213
1214                         // Update I2C with type 0xf2 record with correct size and checksum
1215                         status = TIWriteRom (serial,
1216                                                 start_address,
1217                                                 HEADER_SIZE,
1218                                                 header);
1219                         if (status) {
1220                                 kfree (vheader);
1221                                 kfree (header);
1222                                 kfree (rom_desc);
1223                                 kfree (ti_manuf_desc);
1224                                 return status;
1225                         }
1226
1227                         // verify the write -- must do this in order for write to
1228                         // complete before we do the hardware reset
1229                         status = TIReadRom (serial,
1230                                                 start_address,
1231                                                 HEADER_SIZE,
1232                                                 vheader);
1233
1234                         if (status) {
1235                                 dbg ("%s - can't read header back", __FUNCTION__);
1236                                 kfree (vheader);
1237                                 kfree (header);
1238                                 kfree (rom_desc);
1239                                 kfree (ti_manuf_desc);
1240                                 return status;
1241                         }
1242                         if (memcmp(vheader, header, HEADER_SIZE)) {
1243                                 dbg ("%s - write download record failed", __FUNCTION__);
1244                                 kfree (vheader);
1245                                 kfree (header);
1246                                 kfree (rom_desc);
1247                                 kfree (ti_manuf_desc);
1248                                 return status;
1249                         }
1250
1251                         kfree (vheader);
1252                         kfree (header);
1253
1254                         dbg ("%s - Start firmware update", __FUNCTION__);
1255
1256                         // Tell firmware to copy download image into I2C
1257                         status = TISendVendorRequestSync (serial->serial->dev,
1258                                                 UMPC_COPY_DNLD_TO_I2C,  // Request
1259                                                 0,                      // wValue
1260                                                 0,                      // wIndex
1261                                                 NULL,                   // TransferBuffer
1262                                                 0);                     // TransferBufferLength
1263
1264                         dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1265                         if (status) {
1266                                 dbg ("%s - UMPC_COPY_DNLD_TO_I2C failed", __FUNCTION__);
1267                                 kfree (rom_desc);
1268                                 kfree (ti_manuf_desc);
1269                                 return status;
1270                         }
1271                 }
1272
1273                 // The device is running the download code
1274                 kfree (rom_desc);
1275                 kfree (ti_manuf_desc);
1276                 return 0;
1277         }
1278
1279         /********************************************************************/
1280         /* Boot Mode */
1281         /********************************************************************/
1282         dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1283              __FUNCTION__);
1284
1285         // Configure the TI device so we can use the BULK pipes for download
1286         status = TIConfigureBootDevice (serial->serial->dev);
1287         if (status)
1288                 return status;
1289
1290         if (serial->serial->dev->descriptor.idVendor != USB_VENDOR_ID_ION) {
1291                 dbg ("%s - VID = 0x%x", __FUNCTION__,
1292                      serial->serial->dev->descriptor.idVendor);
1293                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1294                 goto StayInBootMode;
1295         }
1296
1297         // We have an ION device (I2c Must be programmed)
1298         // Determine I2C image type
1299         if (TIGetI2cTypeInBootMode(serial)) {
1300                 goto StayInBootMode;
1301         }
1302
1303         // Registry variable set?
1304         if (TIStayInBootMode) {
1305                 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1306                 goto StayInBootMode;
1307         }
1308
1309         // Check for ION Vendor ID and that the I2C is valid
1310         if (!TiValidateI2cImage(serial)) {
1311                 struct ti_i2c_image_header *header;
1312                 int i;
1313                 __u8 cs = 0;
1314                 __u8 *buffer;
1315                 int buffer_size;
1316
1317                 /* Validate Hardware version number
1318                  * Read Manufacturing Descriptor from TI Based Edgeport
1319                  */
1320                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1321                 if (!ti_manuf_desc) {
1322                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1323                         return -ENOMEM;
1324                 }
1325                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1326                 if (status) {
1327                         kfree (ti_manuf_desc);
1328                         goto StayInBootMode;
1329                 }
1330
1331                 // Check for version 2
1332                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1333                         dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1334                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1335                         kfree (ti_manuf_desc);
1336                         goto StayInBootMode;
1337                 }
1338
1339                 kfree (ti_manuf_desc);
1340
1341                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1342                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1343                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1344                 // And finally when the device comes back up in download mode the driver will cause
1345                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1346                 // the record type from 0xf2 to 0x02.
1347
1348                 /*
1349                  * Do we really have to copy the whole firmware image,
1350                  * or could we do this in place!
1351                  */
1352
1353                 // Allocate a 15.5k buffer + 3 byte header
1354                 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1355                 buffer = kmalloc (buffer_size, GFP_KERNEL);
1356                 if (!buffer) {
1357                         dev_err (dev, "%s - out of memory\n", __FUNCTION__);
1358                         return -ENOMEM;
1359                 }
1360
1361                 // Initialize the buffer to 0xff (pad the buffer)
1362                 memset (buffer, 0xff, buffer_size);
1363
1364                 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1365
1366                 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1367                         cs = (__u8)(cs + buffer[i]);
1368                 }
1369
1370                 header = (struct ti_i2c_image_header *)buffer;
1371
1372                 // update length and checksum after padding
1373                 header->Length   = (__u16)(buffer_size - sizeof(struct ti_i2c_image_header));
1374                 header->CheckSum = cs;
1375
1376                 // Download the operational code
1377                 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1378                 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1379
1380                 kfree (buffer);
1381
1382                 if (status) {
1383                         dbg ("%s - Error downloading operational code image", __FUNCTION__);
1384                         return status;
1385                 }
1386
1387                 // Device will reboot
1388                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1389
1390                 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1391
1392                 /* return an error on purpose */
1393                 return -ENODEV;
1394         }
1395
1396 StayInBootMode:
1397         // Eprom is invalid or blank stay in boot mode
1398         dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1399         serial->product_info.TiMode = TI_MODE_BOOT;
1400
1401         return 0;
1402 }
1403
1404
1405 static int TISetDtr (struct edgeport_port *port)
1406 {
1407         int port_number = port->port->number - port->port->serial->minor;
1408
1409         dbg ("%s", __FUNCTION__);
1410         port->shadow_mcr |= MCR_DTR;
1411
1412         return TIWriteCommandSync (port->port->serial->dev,
1413                                 UMPC_SET_CLR_DTR,
1414                                 (__u8)(UMPM_UART1_PORT + port_number),
1415                                 1,      /* set */
1416                                 NULL,
1417                                 0);
1418 }
1419
1420 static int TIClearDtr (struct edgeport_port *port)
1421 {
1422         int port_number = port->port->number - port->port->serial->minor;
1423
1424         dbg ("%s", __FUNCTION__);
1425         port->shadow_mcr &= ~MCR_DTR;
1426
1427         return TIWriteCommandSync (port->port->serial->dev,
1428                                 UMPC_SET_CLR_DTR,
1429                                 (__u8)(UMPM_UART1_PORT + port_number),
1430                                 0,      /* clear */
1431                                 NULL,
1432                                 0);
1433 }
1434
1435 static int TISetRts (struct edgeport_port *port)
1436 {
1437         int port_number = port->port->number - port->port->serial->minor;
1438
1439         dbg ("%s", __FUNCTION__);
1440         port->shadow_mcr |= MCR_RTS;
1441
1442         return TIWriteCommandSync (port->port->serial->dev,
1443                                 UMPC_SET_CLR_RTS,
1444                                 (__u8)(UMPM_UART1_PORT + port_number),
1445                                 1,      /* set */
1446                                 NULL,
1447                                 0);
1448 }
1449
1450 static int TIClearRts (struct edgeport_port *port)
1451 {
1452         int port_number = port->port->number - port->port->serial->minor;
1453
1454         dbg ("%s", __FUNCTION__);
1455         port->shadow_mcr &= ~MCR_RTS;
1456
1457         return TIWriteCommandSync (port->port->serial->dev,
1458                                 UMPC_SET_CLR_RTS,
1459                                 (__u8)(UMPM_UART1_PORT + port_number),
1460                                 0,      /* clear */
1461                                 NULL,
1462                                 0);
1463 }
1464
1465 static int TISetLoopBack (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                                 1,      /* set */
1475                                 NULL,
1476                                 0);
1477 }
1478
1479 static int TIClearLoopBack (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_LOOPBACK,
1487                                 (__u8)(UMPM_UART1_PORT + port_number),
1488                                 0,      /* clear */
1489                                 NULL,
1490                                 0);
1491 }
1492
1493 static int TISetBreak (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                                 1,      /* set */
1503                                 NULL,
1504                                 0);
1505 }
1506
1507 static int TIClearBreak (struct edgeport_port *port)
1508 {
1509         int port_number = port->port->number - port->port->serial->minor;
1510
1511         dbg ("%s", __FUNCTION__);
1512
1513         return TIWriteCommandSync (port->port->serial->dev,
1514                                 UMPC_SET_CLR_BREAK,
1515                                 (__u8)(UMPM_UART1_PORT + port_number),
1516                                 0,      /* clear */
1517                                 NULL,
1518                                 0);
1519 }
1520
1521 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1522 {
1523         int status = 0;
1524
1525         dbg ("%s - %x", __FUNCTION__, mcr);
1526
1527         if (mcr & MCR_DTR)
1528                 status = TISetDtr (port);
1529         else
1530                 status = TIClearDtr (port);
1531
1532         if (status)
1533                 return status;
1534
1535         if (mcr & MCR_RTS)
1536                 status = TISetRts (port);
1537         else
1538                 status = TIClearRts (port);
1539
1540         if (status)
1541                 return status;
1542
1543         if (mcr & MCR_LOOPBACK)
1544                 status = TISetLoopBack (port);
1545         else
1546                 status = TIClearLoopBack (port);
1547
1548         return status;
1549 }
1550
1551
1552
1553 /* Convert TI LSR to standard UART flags */
1554 static __u8 MapLineStatus (__u8 ti_lsr)
1555 {
1556         __u8 lsr = 0;
1557
1558 #define MAP_FLAG(flagUmp, flagUart)    \
1559         if (ti_lsr & flagUmp) \
1560                 lsr |= flagUart;
1561
1562         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1563         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1564         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1565         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1566         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* receive data available */
1567         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* transmit holding register empty */
1568
1569 #undef MAP_FLAG
1570
1571         return lsr;
1572 }
1573
1574 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1575 {
1576         struct async_icount *icount;
1577
1578         dbg ("%s - %02x", __FUNCTION__, msr);
1579
1580         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1581                 icount = &edge_port->icount;
1582
1583                 /* update input line counters */
1584                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1585                         icount->cts++;
1586                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1587                         icount->dsr++;
1588                 if (msr & EDGEPORT_MSR_DELTA_CD)
1589                         icount->dcd++;
1590                 if (msr & EDGEPORT_MSR_DELTA_RI)
1591                         icount->rng++;
1592                 wake_up_interruptible (&edge_port->delta_msr_wait);
1593         }
1594
1595         /* Save the new modem status */
1596         edge_port->shadow_msr = msr & 0xf0;
1597
1598         return;
1599 }
1600
1601 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1602 {
1603         struct async_icount *icount;
1604         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1605
1606         dbg ("%s - %02x", __FUNCTION__, new_lsr);
1607
1608         edge_port->shadow_lsr = lsr;
1609
1610         if (new_lsr & LSR_BREAK) {
1611                 /*
1612                  * Parity and Framing errors only count if they
1613                  * occur exclusive of a break being received.
1614                  */
1615                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1616         }
1617
1618         /* Place LSR data byte into Rx buffer */
1619         if (lsr_data && edge_port->port->tty) {
1620                 tty_insert_flip_char(edge_port->port->tty, data, 0);
1621                 tty_flip_buffer_push(edge_port->port->tty);
1622         }
1623
1624         /* update input line counters */
1625         icount = &edge_port->icount;
1626         if (new_lsr & LSR_BREAK)
1627                 icount->brk++;
1628         if (new_lsr & LSR_OVER_ERR)
1629                 icount->overrun++;
1630         if (new_lsr & LSR_PAR_ERR)
1631                 icount->parity++;
1632         if (new_lsr & LSR_FRM_ERR)
1633                 icount->frame++;
1634 }
1635
1636
1637 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
1638 {
1639         struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1640         struct usb_serial_port *port;
1641         struct edgeport_port *edge_port;
1642         unsigned char *data = urb->transfer_buffer;
1643         int length = urb->actual_length;
1644         int port_number;
1645         int function;
1646         int status;
1647         __u8 lsr;
1648         __u8 msr;
1649
1650         dbg("%s", __FUNCTION__);
1651
1652         if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
1653                 return;
1654         }
1655
1656         switch (urb->status) {
1657         case 0:
1658                 /* success */
1659                 break;
1660         case -ECONNRESET:
1661         case -ENOENT:
1662         case -ESHUTDOWN:
1663                 /* this urb is terminated, clean up */
1664                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1665                 return;
1666         default:
1667                 dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
1668                 goto exit;
1669         }
1670
1671         if (!length) {
1672                 dbg ("%s - no data in urb", __FUNCTION__);
1673                 goto exit;
1674         }
1675
1676         usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
1677
1678         if (length != 2) {
1679                 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1680                 goto exit;
1681         }
1682
1683         port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1684         function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1685         dbg ("%s - port_number %d, function %d, info 0x%x",
1686              __FUNCTION__, port_number, function, data[1]);
1687         port = edge_serial->serial->port[port_number];
1688         if (port_paranoia_check (port, __FUNCTION__)) {
1689                 dbg ("%s - change found for port that is not present",
1690                      __FUNCTION__);
1691                 return;
1692         }
1693         edge_port = usb_get_serial_port_data(port);
1694         if (!edge_port) {
1695                 dbg ("%s - edge_port not found", __FUNCTION__);
1696                 return;
1697         }
1698         switch (function) {
1699         case TIUMP_INTERRUPT_CODE_LSR:
1700                 lsr = MapLineStatus(data[1]);
1701                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1702                         /* Save the LSR event for bulk read completion routine */
1703                         dbg ("%s - LSR Event Port %u LSR Status = %02x",
1704                              __FUNCTION__, port_number, lsr);
1705                         edge_port->lsr_event = 1;
1706                         edge_port->lsr_mask = lsr;
1707                 } else {
1708                         dbg ("%s - ===== Port %d LSR Status = %02x ======",
1709                              __FUNCTION__, port_number, lsr);
1710                         handle_new_lsr (edge_port, 0, lsr, 0);
1711                 }
1712                 break;
1713
1714         case TIUMP_INTERRUPT_CODE_MSR:  // MSR
1715                 /* Copy MSR from UMP */
1716                 msr = data[1];
1717                 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1718                      __FUNCTION__, port_number, msr);
1719                 handle_new_msr (edge_port, msr);
1720                 break;
1721
1722         default:
1723                 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1724                          __FUNCTION__, data[1]);
1725                 break;
1726
1727         }
1728
1729 exit:
1730         status = usb_submit_urb (urb, GFP_ATOMIC);
1731         if (status)
1732                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1733                          __FUNCTION__, status);
1734 }
1735
1736 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
1737 {
1738         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1739         unsigned char *data = urb->transfer_buffer;
1740         struct tty_struct *tty;
1741         int status;
1742         int i;
1743         int port_number;
1744
1745         dbg("%s", __FUNCTION__);
1746
1747         if (port_paranoia_check (edge_port->port, __FUNCTION__))
1748                 return;
1749
1750         if (urb->status) {
1751                 dbg ("%s - nonzero read bulk status received: %d",
1752                      __FUNCTION__, urb->status);
1753
1754                 if (urb->status == -EPIPE) {
1755                         /* clear any problem that might have happened on this pipe */
1756                         usb_clear_halt (edge_port->port->serial->dev, urb->pipe);
1757                         goto exit;
1758                 }
1759                 return;
1760         }
1761
1762         port_number = edge_port->port->number - edge_port->port->serial->minor;
1763
1764         if (edge_port->lsr_event) {
1765                 edge_port->lsr_event = 0;
1766                 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1767                      __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1768                 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1769                 /* Adjust buffer length/pointer */
1770                 --urb->actual_length;
1771                 ++data;
1772         }
1773
1774         tty = edge_port->port->tty;
1775         if (tty && urb->actual_length) {
1776                 usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
1777
1778                 if (edge_port->close_pending) {
1779                         dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1780                 } else {
1781                         for (i = 0; i < urb->actual_length ; ++i) {
1782                                 /* if we insert more than TTY_FLIPBUF_SIZE characters,
1783                                  * we drop them. */
1784                                 if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
1785                                         tty_flip_buffer_push(tty);
1786                                 }
1787                                 /* this doesn't actually push the data through unless
1788                                  * tty->low_latency is set */
1789                                 tty_insert_flip_char(tty, data[i], 0);
1790                         }
1791                         tty_flip_buffer_push(tty);
1792                 }
1793                 edge_port->icount.rx += urb->actual_length;
1794         }
1795
1796 exit:
1797         /* continue always trying to read */
1798         status = usb_submit_urb (urb, GFP_ATOMIC);
1799         if (status)
1800                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1801                          __FUNCTION__, status);
1802 }
1803
1804 static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
1805 {
1806         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1807         struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
1808         struct tty_struct *tty;
1809
1810         dbg ("%s - port %d", __FUNCTION__, port->number);
1811
1812         if (!serial) {
1813                 dbg ("%s - bad serial pointer, exiting", __FUNCTION__);
1814                 return;
1815         }
1816
1817         if (urb->status) {
1818                 dbg ("%s - nonzero write bulk status received: %d",
1819                      __FUNCTION__, urb->status);
1820
1821                 if (urb->status == -EPIPE) {
1822                         /* clear any problem that might have happened on this pipe */
1823                         usb_clear_halt (serial->dev, urb->pipe);
1824                 }
1825                 return;
1826         }
1827
1828         tty = port->tty;
1829         if (tty) {
1830                 /* let the tty driver wakeup if it has a special write_wakeup function */
1831                 if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
1832                         (tty->ldisc.write_wakeup)(tty);
1833                 }
1834
1835                 /* tell the tty driver that something has changed */
1836                 wake_up_interruptible(&tty->write_wait);
1837         }
1838 }
1839
1840 static int edge_open (struct usb_serial_port *port, struct file * filp)
1841 {
1842         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1843         struct edgeport_serial *edge_serial;
1844         struct usb_device *dev;
1845         struct urb *urb;
1846         int port_number;
1847         int status;
1848         u16 open_settings;
1849         u8 transaction_timeout;
1850
1851         if (port_paranoia_check (port, __FUNCTION__))
1852                 return -ENODEV;
1853
1854         dbg("%s - port %d", __FUNCTION__, port->number);
1855
1856         if (edge_port == NULL)
1857                 return -ENODEV;
1858
1859         /* force low_latency on so that our tty_push actually forces the data through,
1860            otherwise it is scheduled, and with high data rates (like with OHCI) data
1861            can get lost. */
1862         if (port->tty)
1863                 port->tty->low_latency = 1;
1864
1865         port_number = port->number - port->serial->minor;
1866         switch (port_number) {
1867                 case 0:
1868                         edge_port->uart_base = UMPMEM_BASE_UART1;
1869                         edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1870                         break;
1871                 case 1:
1872                         edge_port->uart_base = UMPMEM_BASE_UART2;
1873                         edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1874                         break;
1875                 default:
1876                         dev_err (&port->dev, "Unknown port number!!!\n");
1877                         return -ENODEV;
1878         }
1879
1880         dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1881              __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1882
1883         dev = port->serial->dev;
1884
1885         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1886         init_waitqueue_head (&edge_port->delta_msr_wait);
1887
1888         /* turn off loopback */
1889         status = TIClearLoopBack (edge_port);
1890         if (status)
1891                 return status;
1892
1893         /* set up the port settings */
1894         edge_set_termios (port, NULL);
1895
1896         /* open up the port */
1897
1898         /* milliseconds to timeout for DMA transfer */
1899         transaction_timeout = 2;
1900
1901         edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1902
1903         // milliseconds to timeout for DMA transfer
1904         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1905                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1906                              (transaction_timeout << 2));
1907
1908         dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1909
1910         /* Tell TI to open and start the port */
1911         status = TIWriteCommandSync (dev,
1912                                         UMPC_OPEN_PORT,
1913                                         (u8)(UMPM_UART1_PORT + port_number),
1914                                         open_settings,
1915                                         NULL,
1916                                         0);
1917         if (status)
1918                 return status;
1919
1920         /* Start the DMA? */
1921         status = TIWriteCommandSync (dev,
1922                                         UMPC_START_PORT,
1923                                         (u8)(UMPM_UART1_PORT + port_number),
1924                                         0,
1925                                         NULL,
1926                                         0);
1927         if (status)
1928                 return status;
1929
1930         /* Clear TX and RX buffers in UMP */
1931         status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1932         if (status)
1933                 return status;
1934
1935         /* Read Initial MSR */
1936         status = TIReadVendorRequestSync (dev,
1937                                         UMPC_READ_MSR,  // Request
1938                                         0,              // wValue
1939                                         (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
1940                                         &edge_port->shadow_msr,                 // TransferBuffer
1941                                         1);                                     // TransferBufferLength
1942         if (status)
1943                 return status;
1944
1945         dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
1946
1947         edge_serial = edge_port->edge_serial;
1948         if (edge_serial->num_ports_open == 0) {
1949                 /* we are the first port to be opened, let's post the interrupt urb */
1950                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1951                 if (!urb) {
1952                         dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
1953                         return -EINVAL;
1954                 }
1955                 urb->complete = edge_interrupt_callback;
1956                 urb->context = edge_serial;
1957                 urb->dev = dev;
1958                 status = usb_submit_urb (urb, GFP_KERNEL);
1959                 if (status) {
1960                         dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
1961                         return status;
1962                 }
1963         }
1964
1965         /*
1966          * reset the data toggle on the bulk endpoints to work around bug in
1967          * host controllers where things get out of sync some times
1968          */
1969         usb_clear_halt (dev, port->write_urb->pipe);
1970         usb_clear_halt (dev, port->read_urb->pipe);
1971
1972         /* start up our bulk read urb */
1973         urb = port->read_urb;
1974         if (!urb) {
1975                 dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
1976                 return -EINVAL;
1977         }
1978         urb->complete = edge_bulk_in_callback;
1979         urb->context = edge_port;
1980         urb->dev = dev;
1981         status = usb_submit_urb (urb, GFP_KERNEL);
1982         if (status) {
1983                 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
1984                 return status;
1985         }
1986
1987         ++edge_serial->num_ports_open;
1988
1989         dbg("%s - exited", __FUNCTION__);
1990
1991         return 0;
1992 }
1993
1994 static void edge_close (struct usb_serial_port *port, struct file * filp)
1995 {
1996         struct usb_serial *serial;
1997         struct edgeport_serial *edge_serial;
1998         struct edgeport_port *edge_port;
1999         int port_number;
2000         int status;
2001
2002         if (port_paranoia_check (port, __FUNCTION__))
2003                 return;
2004
2005         dbg("%s - port %d", __FUNCTION__, port->number);
2006
2007         serial = get_usb_serial (port, __FUNCTION__);
2008         if (!serial)
2009                 return;
2010
2011         edge_serial = usb_get_serial_data(serial);
2012         edge_port = usb_get_serial_port_data(port);
2013         if ((edge_serial == NULL) || (edge_port == NULL))
2014                 return;
2015
2016         if (serial->dev) {
2017                 /* The bulkreadcompletion routine will check
2018                  * this flag and dump add read data */
2019                 edge_port->close_pending = 1;
2020
2021                 /* chase the port close */
2022                 TIChasePort (edge_port);
2023
2024                 usb_unlink_urb (port->read_urb);
2025
2026                 /* assuming we can still talk to the device,
2027                  * send a close port command to it */
2028                 dbg("%s - send umpc_close_port", __FUNCTION__);
2029                 port_number = port->number - port->serial->minor;
2030                 status = TIWriteCommandSync (port->serial->dev,
2031                                              UMPC_CLOSE_PORT,
2032                                              (__u8)(UMPM_UART1_PORT + port_number),
2033                                              0,
2034                                              NULL,
2035                                              0);
2036                 --edge_port->edge_serial->num_ports_open;
2037                 if (edge_port->edge_serial->num_ports_open <= 0) {
2038                         /* last port is now closed, let's shut down our interrupt urb */
2039                         usb_unlink_urb (serial->port[0]->interrupt_in_urb);
2040                         edge_port->edge_serial->num_ports_open = 0;
2041                 }
2042         edge_port->close_pending = 0;
2043         }
2044
2045         dbg("%s - exited", __FUNCTION__);
2046 }
2047
2048 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
2049 {
2050         struct usb_serial *serial = port->serial;
2051         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2052         int result;
2053
2054         dbg("%s - port %d", __FUNCTION__, port->number);
2055
2056         if (count == 0) {
2057                 dbg("%s - write request of 0 bytes", __FUNCTION__);
2058                 return 0;
2059         }
2060
2061         if (edge_port == NULL)
2062                 return -ENODEV;
2063         if (edge_port->close_pending == 1)
2064                 return -ENODEV;
2065
2066         if (port->write_urb->status == -EINPROGRESS) {
2067                 dbg ("%s - already writing", __FUNCTION__);
2068                 return 0;
2069         }
2070
2071         count = min (count, port->bulk_out_size);
2072
2073         if (from_user) {
2074                 if (copy_from_user(port->write_urb->transfer_buffer, data, count))
2075                         return -EFAULT;
2076         } else {
2077                 memcpy (port->write_urb->transfer_buffer, data, count);
2078         }
2079
2080         usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
2081
2082         /* set up our urb */
2083         usb_fill_bulk_urb (port->write_urb, serial->dev,
2084                            usb_sndbulkpipe (serial->dev,
2085                                             port->bulk_out_endpointAddress),
2086                            port->write_urb->transfer_buffer, count,
2087                            edge_bulk_out_callback,
2088                            port);
2089
2090         /* send the data out the bulk port */
2091         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2092         if (result)
2093                 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
2094         else
2095                 result = count;
2096
2097         if (result > 0)
2098                 edge_port->icount.tx += count;
2099
2100         return result;
2101 }
2102
2103 static int edge_write_room (struct usb_serial_port *port)
2104 {
2105         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2106         int room = 0;
2107
2108         dbg("%s", __FUNCTION__);
2109
2110         if (edge_port == NULL)
2111                 return -ENODEV;
2112         if (edge_port->close_pending == 1)
2113                 return -ENODEV;
2114
2115         dbg("%s - port %d", __FUNCTION__, port->number);
2116
2117         if (port->write_urb->status != -EINPROGRESS)
2118                 room = port->bulk_out_size;
2119
2120         dbg("%s - returns %d", __FUNCTION__, room);
2121         return room;
2122 }
2123
2124 static int edge_chars_in_buffer (struct usb_serial_port *port)
2125 {
2126         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2127         int chars = 0;
2128
2129         dbg("%s", __FUNCTION__);
2130
2131         if (edge_port == NULL)
2132                 return -ENODEV;
2133         if (edge_port->close_pending == 1)
2134                 return -ENODEV;
2135
2136         dbg("%s - port %d", __FUNCTION__, port->number);
2137
2138         if (port->write_urb->status == -EINPROGRESS)
2139                 chars = port->write_urb->transfer_buffer_length;
2140
2141         dbg ("%s - returns %d", __FUNCTION__, chars);
2142         return chars;
2143 }
2144
2145 static void edge_throttle (struct usb_serial_port *port)
2146 {
2147         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2148         struct tty_struct *tty;
2149         int status;
2150
2151         dbg("%s - port %d", __FUNCTION__, port->number);
2152
2153         if (edge_port == NULL)
2154                 return;
2155
2156         tty = port->tty;
2157         if (!tty) {
2158                 dbg ("%s - no tty available", __FUNCTION__);
2159                 return;
2160         }
2161         /* if we are implementing XON/XOFF, send the stop character */
2162         if (I_IXOFF(tty)) {
2163                 unsigned char stop_char = STOP_CHAR(tty);
2164                 status = edge_write (port, 0, &stop_char, 1);
2165                 if (status <= 0) {
2166                         return;
2167                 }
2168         }
2169
2170         /* if we are implementing RTS/CTS, toggle that line */
2171         if (tty->termios->c_cflag & CRTSCTS) {
2172                 status = TIClearRts (edge_port);
2173         }
2174
2175         usb_unlink_urb (port->read_urb);
2176 }
2177
2178 static void edge_unthrottle (struct usb_serial_port *port)
2179 {
2180         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2181         struct tty_struct *tty;
2182         int status;
2183
2184         dbg("%s - port %d", __FUNCTION__, port->number);
2185
2186         if (edge_port == NULL)
2187                 return;
2188
2189         tty = port->tty;
2190         if (!tty) {
2191                 dbg ("%s - no tty available", __FUNCTION__);
2192                 return;
2193         }
2194
2195         /* if we are implementing XON/XOFF, send the start character */
2196         if (I_IXOFF(tty)) {
2197                 unsigned char start_char = START_CHAR(tty);
2198                 status = edge_write (port, 0, &start_char, 1);
2199                 if (status <= 0) {
2200                         return;
2201                 }
2202         }
2203
2204         /* if we are implementing RTS/CTS, toggle that line */
2205         if (tty->termios->c_cflag & CRTSCTS) {
2206                 status = TISetRts (edge_port);
2207         }
2208
2209         port->read_urb->dev = port->serial->dev;
2210         status = usb_submit_urb (port->read_urb, GFP_ATOMIC);
2211         if (status) {
2212                 dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2213         }
2214 }
2215
2216
2217 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2218 {
2219         struct ump_uart_config *config;
2220         struct tty_struct *tty;
2221         int baud;
2222         int round;
2223         unsigned cflag;
2224         int status;
2225         int port_number = edge_port->port->number - edge_port->port->serial->minor;
2226
2227         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2228
2229         tty = edge_port->port->tty;
2230         if ((!tty) ||
2231             (!tty->termios)) {
2232                 dbg("%s - no tty structures", __FUNCTION__);
2233                 return;
2234         }
2235
2236         config = kmalloc (sizeof (*config), GFP_KERNEL);
2237         if (!config) {
2238                 dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
2239                 return;
2240         }
2241
2242         cflag = tty->termios->c_cflag;
2243
2244         config->wFlags = 0;
2245
2246         /* These flags must be set */
2247         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2248         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2249         config->bUartMode = 0;
2250
2251         switch (cflag & CSIZE) {
2252                 case CS5:
2253                             config->bDataBits = UMP_UART_CHAR5BITS;
2254                             dbg ("%s - data bits = 5", __FUNCTION__);
2255                             break;
2256                 case CS6:
2257                             config->bDataBits = UMP_UART_CHAR6BITS;
2258                             dbg ("%s - data bits = 6", __FUNCTION__);
2259                             break;
2260                 case CS7:
2261                             config->bDataBits = UMP_UART_CHAR7BITS;
2262                             dbg ("%s - data bits = 7", __FUNCTION__);
2263                             break;
2264                 default:
2265                 case CS8:
2266                             config->bDataBits = UMP_UART_CHAR8BITS;
2267                             dbg ("%s - data bits = 8", __FUNCTION__);
2268                             break;
2269         }
2270
2271         if (cflag & PARENB) {
2272                 if (cflag & PARODD) {
2273                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2274                         config->bParity = UMP_UART_ODDPARITY;
2275                         dbg("%s - parity = odd", __FUNCTION__);
2276                 } else {
2277                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2278                         config->bParity = UMP_UART_EVENPARITY;
2279                         dbg("%s - parity = even", __FUNCTION__);
2280                 }
2281         } else {
2282                 config->bParity = UMP_UART_NOPARITY;
2283                 dbg("%s - parity = none", __FUNCTION__);
2284         }
2285
2286         if (cflag & CSTOPB) {
2287                 config->bStopBits = UMP_UART_STOPBIT2;
2288                 dbg("%s - stop bits = 2", __FUNCTION__);
2289         } else {
2290                 config->bStopBits = UMP_UART_STOPBIT1;
2291                 dbg("%s - stop bits = 1", __FUNCTION__);
2292         }
2293
2294         /* figure out the flow control settings */
2295         if (cflag & CRTSCTS) {
2296                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2297                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2298                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2299         } else {
2300                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2301         }
2302
2303         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2304         if (I_IXOFF(tty) || I_IXON(tty)) {
2305                 config->cXon  = START_CHAR(tty);
2306                 config->cXoff = STOP_CHAR(tty);
2307
2308                 /* if we are implementing INBOUND XON/XOFF */
2309                 if (I_IXOFF(tty)) {
2310                         config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2311                         dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2312                              __FUNCTION__, config->cXon, config->cXoff);
2313                 } else {
2314                         dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2315                 }
2316
2317                 /* if we are implementing OUTBOUND XON/XOFF */
2318                 if (I_IXON(tty)) {
2319                         config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2320                         dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2321                              __FUNCTION__, config->cXon, config->cXoff);
2322                 } else {
2323                         dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2324                 }
2325         }
2326
2327         /* Round the baud rate */
2328         baud = tty_get_baud_rate(tty);
2329         if (!baud) {
2330                 /* pick a default, any default... */
2331                 baud = 9600;
2332         }
2333         config->wBaudRate = (__u16)(461550L / baud);
2334         round = 4615500L / baud;
2335         if ((round - (config->wBaudRate * 10)) >= 5)
2336                 config->wBaudRate++;
2337
2338         dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2339
2340         dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2341         dbg ("wFlags:    0x%x", config->wFlags);
2342         dbg ("bDataBits:   %d", config->bDataBits);
2343         dbg ("bParity:     %d", config->bParity);
2344         dbg ("bStopBits:   %d", config->bStopBits);
2345         dbg ("cXon:        %d", config->cXon);
2346         dbg ("cXoff:       %d", config->cXoff);
2347         dbg ("bUartMode:   %d", config->bUartMode);
2348
2349         /* move the word values into big endian mode */
2350         cpu_to_be16s (&config->wFlags);
2351         cpu_to_be16s (&config->wBaudRate);
2352
2353         status = TIWriteCommandSync (edge_port->port->serial->dev,
2354                                 UMPC_SET_CONFIG,
2355                                 (__u8)(UMPM_UART1_PORT + port_number),
2356                                 0,
2357                                 (__u8 *)config,
2358                                 sizeof(*config));
2359         if (status) {
2360                 dbg ("%s - error %d when trying to write config to device",
2361                      __FUNCTION__, status);
2362         }
2363
2364         kfree (config);
2365
2366         return;
2367 }
2368
2369 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
2370 {
2371         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2372         struct tty_struct *tty = port->tty;
2373         unsigned int cflag;
2374
2375         if (!port->tty || !port->tty->termios) {
2376                 dbg ("%s - no tty or termios", __FUNCTION__);
2377                 return;
2378         }
2379
2380         cflag = tty->termios->c_cflag;
2381         /* check that they really want us to change something */
2382         if (old_termios) {
2383                 if ((cflag == old_termios->c_cflag) &&
2384                     (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
2385                         dbg ("%s - nothing to change", __FUNCTION__);
2386                         return;
2387                 }
2388         }
2389
2390         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2391             tty->termios->c_cflag,
2392             RELEVANT_IFLAG(tty->termios->c_iflag));
2393         if (old_termios) {
2394                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2395                     old_termios->c_cflag,
2396                     RELEVANT_IFLAG(old_termios->c_iflag));
2397         }
2398
2399         dbg("%s - port %d", __FUNCTION__, port->number);
2400
2401         if (edge_port == NULL)
2402                 return;
2403
2404         /* change the port settings to the new ones specified */
2405         change_port_settings (edge_port, old_termios);
2406
2407         return;
2408 }
2409
2410 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2411 {
2412         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2413         unsigned int mcr;
2414
2415         dbg("%s - port %d", __FUNCTION__, port->number);
2416
2417         mcr = edge_port->shadow_mcr;
2418         if (set & TIOCM_RTS)
2419                 mcr |= MCR_RTS;
2420         if (set & TIOCM_DTR)
2421                 mcr |= MCR_DTR;
2422         if (set & TIOCM_LOOP)
2423                 mcr |= MCR_LOOPBACK;
2424
2425         if (clear & TIOCM_RTS)
2426                 mcr &= ~MCR_RTS;
2427         if (clear & TIOCM_DTR)
2428                 mcr &= ~MCR_DTR;
2429         if (clear & TIOCM_LOOP)
2430                 mcr &= ~MCR_LOOPBACK;
2431
2432         edge_port->shadow_mcr = mcr;
2433
2434         TIRestoreMCR (edge_port, mcr);
2435
2436         return 0;
2437 }
2438
2439 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2440 {
2441         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2442         unsigned int result = 0;
2443         unsigned int msr;
2444         unsigned int mcr;
2445
2446         dbg("%s - port %d", __FUNCTION__, port->number);
2447
2448         msr = edge_port->shadow_msr;
2449         mcr = edge_port->shadow_mcr;
2450         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2451                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2452                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2453                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2454                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2455                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2456
2457
2458         dbg("%s -- %x", __FUNCTION__, result);
2459
2460         return result;
2461 }
2462
2463 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct * retinfo)
2464 {
2465         struct serial_struct tmp;
2466
2467         if (!retinfo)
2468                 return -EFAULT;
2469
2470         memset(&tmp, 0, sizeof(tmp));
2471
2472         tmp.type                = PORT_16550A;
2473         tmp.line                = edge_port->port->serial->minor;
2474         tmp.port                = edge_port->port->number;
2475         tmp.irq                 = 0;
2476         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2477         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2478         tmp.baud_base           = 9600;
2479         tmp.close_delay         = 5*HZ;
2480         tmp.closing_wait        = 30*HZ;
2481 //      tmp.custom_divisor      = state->custom_divisor;
2482 //      tmp.hub6                = state->hub6;
2483 //      tmp.io_type             = state->io_type;
2484
2485
2486         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2487                 return -EFAULT;
2488         return 0;
2489 }
2490
2491 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2492 {
2493         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2494         struct async_icount cnow;
2495         struct async_icount cprev;
2496
2497         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2498
2499         switch (cmd) {
2500                 case TIOCINQ:
2501                         dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2502 //                      return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2503                         break;
2504
2505                 case TIOCSERGETLSR:
2506                         dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2507 //                      return get_lsr_info(edge_port, (unsigned int *) arg);
2508                         break;
2509
2510                 case TIOCGSERIAL:
2511                         dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2512                         return get_serial_info(edge_port, (struct serial_struct *) arg);
2513                         break;
2514
2515                 case TIOCSSERIAL:
2516                         dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2517                         break;
2518
2519                 case TIOCMIWAIT:
2520                         dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2521                         cprev = edge_port->icount;
2522                         while (1) {
2523                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
2524                                 /* see if a signal did it */
2525                                 if (signal_pending(current))
2526                                         return -ERESTARTSYS;
2527                                 cnow = edge_port->icount;
2528                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2529                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2530                                         return -EIO; /* no change => error */
2531                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2532                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2533                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2534                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2535                                         return 0;
2536                                 }
2537                                 cprev = cnow;
2538                         }
2539                         /* not reached */
2540                         break;
2541
2542                 case TIOCGICOUNT:
2543                         dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2544                              port->number, edge_port->icount.rx, edge_port->icount.tx);
2545                         if (copy_to_user((void *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2546                                 return -EFAULT;
2547                         return 0;
2548         }
2549
2550         return -ENOIOCTLCMD;
2551 }
2552
2553 static void edge_break (struct usb_serial_port *port, int break_state)
2554 {
2555         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2556         int status;
2557
2558         dbg ("%s - state = %d", __FUNCTION__, break_state);
2559
2560         /* chase the port close */
2561         TIChasePort (edge_port);
2562
2563         if (break_state == -1) {
2564                 status = TISetBreak (edge_port);
2565         } else {
2566                 status = TIClearBreak (edge_port);
2567         }
2568         if (status) {
2569                 dbg ("%s - error %d sending break set/clear command.",
2570                      __FUNCTION__, status);
2571         }
2572 }
2573
2574 static int edge_startup (struct usb_serial *serial)
2575 {
2576         struct edgeport_serial *edge_serial;
2577         struct edgeport_port *edge_port;
2578         struct usb_device *dev;
2579         int status;
2580         int i;
2581
2582         dev = serial->dev;
2583
2584         /* create our private serial structure */
2585         edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2586         if (edge_serial == NULL) {
2587                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2588                 return -ENOMEM;
2589         }
2590         memset (edge_serial, 0, sizeof(struct edgeport_serial));
2591         edge_serial->serial = serial;
2592         usb_set_serial_data(serial, edge_serial);
2593
2594         status = TIDownloadFirmware (edge_serial);
2595         if (status) {
2596                 kfree (edge_serial);
2597                 return status;
2598         }
2599
2600         /* set up our port private structures */
2601         for (i = 0; i < serial->num_ports; ++i) {
2602                 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2603                 if (edge_port == NULL) {
2604                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2605                         return -ENOMEM;
2606                 }
2607                 memset (edge_port, 0, sizeof(struct edgeport_port));
2608                 edge_port->port = serial->port[i];
2609                 edge_port->edge_serial = edge_serial;
2610                 usb_set_serial_port_data(serial->port[i], edge_port);
2611         }
2612
2613         return 0;
2614 }
2615
2616 static void edge_shutdown (struct usb_serial *serial)
2617 {
2618         int i;
2619
2620         dbg ("%s", __FUNCTION__);
2621
2622         for (i=0; i < serial->num_ports; ++i) {
2623                 kfree (usb_get_serial_port_data(serial->port[i]));
2624                 usb_set_serial_port_data(serial->port[i], NULL);
2625         }
2626         kfree (usb_get_serial_data(serial));
2627         usb_set_serial_data(serial, NULL);
2628 }
2629
2630
2631 static struct usb_serial_device_type edgeport_1port_device = {
2632         .owner                  = THIS_MODULE,
2633         .name                   = "Edgeport TI 1 port adapter",
2634         .short_name             = "edgeport_ti_1",
2635         .id_table               = edgeport_1port_id_table,
2636         .num_interrupt_in       = 1,
2637         .num_bulk_in            = 1,
2638         .num_bulk_out           = 1,
2639         .num_ports              = 1,
2640         .open                   = edge_open,
2641         .close                  = edge_close,
2642         .throttle               = edge_throttle,
2643         .unthrottle             = edge_unthrottle,
2644         .attach                 = edge_startup,
2645         .shutdown               = edge_shutdown,
2646         .ioctl                  = edge_ioctl,
2647         .set_termios            = edge_set_termios,
2648         .tiocmget               = edge_tiocmget,
2649         .tiocmset               = edge_tiocmset,
2650         .write                  = edge_write,
2651         .write_room             = edge_write_room,
2652         .chars_in_buffer        = edge_chars_in_buffer,
2653         .break_ctl              = edge_break,
2654 };
2655
2656 static struct usb_serial_device_type edgeport_2port_device = {
2657         .owner                  = THIS_MODULE,
2658         .name                   = "Edgeport TI 2 port adapter",
2659         .short_name             = "edgeport_ti_2",
2660         .id_table               = edgeport_2port_id_table,
2661         .num_interrupt_in       = 1,
2662         .num_bulk_in            = 2,
2663         .num_bulk_out           = 2,
2664         .num_ports              = 2,
2665         .open                   = edge_open,
2666         .close                  = edge_close,
2667         .throttle               = edge_throttle,
2668         .unthrottle             = edge_unthrottle,
2669         .attach                 = edge_startup,
2670         .shutdown               = edge_shutdown,
2671         .ioctl                  = edge_ioctl,
2672         .set_termios            = edge_set_termios,
2673         .tiocmget               = edge_tiocmget,
2674         .tiocmset               = edge_tiocmset,
2675         .write                  = edge_write,
2676         .write_room             = edge_write_room,
2677         .chars_in_buffer        = edge_chars_in_buffer,
2678         .break_ctl              = edge_break,
2679 };
2680
2681
2682 static int __init edgeport_init(void)
2683 {
2684         int retval;
2685         retval = usb_serial_register(&edgeport_1port_device);
2686         if (retval)
2687                 goto failed_1port_device_register;
2688         retval = usb_serial_register(&edgeport_2port_device);
2689         if (retval)
2690                 goto failed_2port_device_register;
2691         retval = usb_register(&io_driver);
2692         if (retval)
2693                 goto failed_usb_register;
2694         info(DRIVER_DESC " " DRIVER_VERSION);
2695         return 0;
2696 failed_usb_register:
2697         usb_serial_deregister(&edgeport_2port_device);
2698 failed_2port_device_register:
2699         usb_serial_deregister(&edgeport_1port_device);
2700 failed_1port_device_register:
2701         return retval;
2702 }
2703
2704 static void __exit edgeport_exit (void)
2705 {
2706         usb_deregister (&io_driver);
2707         usb_serial_deregister (&edgeport_1port_device);
2708         usb_serial_deregister (&edgeport_2port_device);
2709 }
2710
2711 module_init(edgeport_init);
2712 module_exit(edgeport_exit);
2713
2714 /* Module information */
2715 MODULE_AUTHOR(DRIVER_AUTHOR);
2716 MODULE_DESCRIPTION(DRIVER_DESC);
2717 MODULE_LICENSE("GPL");
2718
2719 MODULE_PARM(debug, "i");
2720 MODULE_PARM_DESC(debug, "Debug enabled or not");
2721
2722 MODULE_PARM(ignore_cpu_rev, "i");
2723 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
2724