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/errno.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/tty.h>
  29 #include <linux/tty_driver.h>
  30 #include <linux/tty_flip.h>
  31 #include <linux/module.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/serial.h>
  34 #include <linux/ioctl.h>
  35 #include <asm/uaccess.h>
  36 #include <linux/usb.h>
  37
  38 #ifdef CONFIG_USB_SERIAL_DEBUG
  39         static int debug = 1;
  40 #else
  41         static int debug;
  42 #endif
  43
  44 #include "usb-serial.h"
  45
  46 #include "io_16654.h"
  47 #include "io_usbvend.h"
  48 #include "io_ti.h"
  49
  50 /*
  51  * Version Information
  52  */
  53 #define DRIVER_VERSION "v0.2"
  54 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  55 #define DRIVER_DESC "Edgeport USB Serial Driver"
  56
  57
  58 /* firmware image code */
  59 #define IMAGE_VERSION_NAME      PagableOperationalCodeImageVersion
  60 #define IMAGE_ARRAY_NAME        PagableOperationalCodeImage
  61 #define IMAGE_SIZE              PagableOperationalCodeSize
  62 #include "io_fw_down3.h"        /* Define array OperationalCodeImage[] */
  63
  64 #define EPROM_PAGE_SIZE         64
  65
  66
  67 struct edgeport_uart_buf_desc {
  68         __u32 count;            // Number of bytes currently in buffer
  69 };
  70
  71 /* different hardware types */
  72 #define HARDWARE_TYPE_930       0
  73 #define HARDWARE_TYPE_TIUMP     1
  74
  75 // IOCTL_PRIVATE_TI_GET_MODE Definitions
  76 #define TI_MODE_CONFIGURING     0   // Device has not entered start device
  77 #define TI_MODE_BOOT            1   // Staying in boot mode
  78 #define TI_MODE_DOWNLOAD        2   // Made it to download mode
  79 #define TI_MODE_TRANSITIONING   3   // Currently in boot mode but transitioning to download mode
  80
  81
  82 /* Product information read from the Edgeport */
  83 struct product_info
  84 {
  85         int     TiMode;                 // Current TI Mode
  86         __u8    hardware_type;          // Type of hardware
  87 } __attribute__((packed));
  88
  89
  90 struct edgeport_port {
  91         __u16 uart_base;
  92         __u16 dma_address;
  93         __u8 shadow_msr;
  94         __u8 shadow_mcr;
  95         __u8 shadow_lsr;
  96         __u8 lsr_mask;
  97         __u32 ump_read_timeout;         /* Number of miliseconds the UMP will
  98                                            wait without data before completing
  99                                            a read short */
 100         int baud_rate;
 101         int close_pending;
 102         int lsr_event;
 103         struct edgeport_uart_buf_desc tx;
 104         struct async_icount     icount;
 105         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
 106                                                    waiting for msr change to
 107                                                    happen */
 108         struct edgeport_serial  *edge_serial;
 109         struct usb_serial_port  *port;
 110 };
 111
 112 struct edgeport_serial {
 113         struct product_info product_info;
 114         u8 TI_I2C_Type;                 // Type of I2C in UMP
 115         u8 TiReadI2C;                   // Set to TRUE if we have read the I2c in Boot Mode
 116         int num_ports_open;
 117         struct usb_serial *serial;
 118 };
 119
 120
 121 /* Devices that this driver supports */
 122 static struct usb_device_id edgeport_1port_id_table [] = {
 123         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 124         { }
 125 };
 126
 127 static struct usb_device_id edgeport_2port_id_table [] = {
 128         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 132         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
 133         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
 134         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 135         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
 136         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
 137         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 138         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
 141         { }
 142 };
 143
 144 /* Devices that this driver supports */
 145 static __devinitdata struct usb_device_id id_table_combined [] = {
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 151         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_BOOT) },
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421_DOWN) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_BOOT) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21_DOWN) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 157         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22) },
 160         { }
 161 };
 162
 163 MODULE_DEVICE_TABLE (usb, id_table_combined);
 164
 165
 166 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
 167
 168 static int TIStayInBootMode = 0;
 169 static int ignore_cpu_rev = 0;
 170
 171
 172
 173 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
 174
 175 static int TIReadVendorRequestSync (struct usb_device *dev,
 176                                 __u8            request,
 177                                 __u16           value,
 178                                 __u16           index,
 179                                 u8              *data,
 180                                 int             size)
 181 {
 182         int status;
 183
 184         status = usb_control_msg (dev,
 185                                 usb_rcvctrlpipe(dev, 0),
 186                                 request,
 187                                 (USB_TYPE_VENDOR |
 188                                  USB_RECIP_DEVICE |
 189                                  USB_DIR_IN),
 190                                 value,
 191                                 index,
 192                                 data,
 193                                 size,
 194                                 HZ);
 195         if (status < 0)
 196                 return status;
 197         if (status != size) {
 198                 dbg ("%s - wanted to write %d, but only wrote %d",
 199                      __FUNCTION__, size, status);
 200                 return -ECOMM;
 201         }
 202         return 0;
 203 }
 204
 205 static int TISendVendorRequestSync (struct usb_device *dev,
 206                                 __u8            request,
 207                                 __u16           value,
 208                                 __u16           index,
 209                                 u8              *data,
 210                                 int             size)
 211 {
 212         int status;
 213
 214         status = usb_control_msg (dev,
 215                                 usb_sndctrlpipe(dev, 0),
 216                                 request,
 217                                 (USB_TYPE_VENDOR |
 218                                  USB_RECIP_DEVICE |
 219                                  USB_DIR_OUT),
 220                                 value,
 221                                 index,
 222                                 data,
 223                                 size,
 224                                 HZ);
 225
 226         if (status < 0)
 227                 return status;
 228         if (status != size) {
 229                 dbg ("%s - wanted to write %d, but only wrote %d",
 230                      __FUNCTION__, size, status);
 231                 return -ECOMM;
 232         }
 233         return 0;
 234 }
 235
 236 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
 237                                 __u8 moduleid, __u16 value, u8 *data,
 238                                 int size)
 239 {
 240         return TISendVendorRequestSync (dev,
 241                                           command,                      // Request
 242                                           value,                        // wValue
 243                                           moduleid,                     // wIndex
 244                                           data,                         // TransferBuffer
 245                                           size);                        // TransferBufferLength
 246
 247 }
 248
 249
 250 /* clear tx/rx buffers and fifo in TI UMP */
 251 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
 252 {
 253         int port_number = port->number - port->serial->minor;
 254
 255         dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
 256
 257         return TIWriteCommandSync (port->serial->dev,
 258                                         UMPC_PURGE_PORT,
 259                                         (__u8)(UMPM_UART1_PORT + port_number),
 260                                         mask,
 261                                         NULL,
 262                                         0);
 263 }
 264
 265 /**
 266  * TIReadDownloadMemory - Read edgeport memory from TI chip
 267  * @dev: usb device pointer
 268  * @address: Device CPU address at which to read
 269  * @length: Length of above data
 270  * @address_type: Can read both XDATA and I2C
 271  * @buffer: pointer to input data buffer
 272  */
 273 int TIReadDownloadMemory (struct usb_device *dev, int start_address, int length,
 274                           __u8 address_type, __u8 *buffer)
 275 {
 276         int status = 0;
 277         __u8 read_length;
 278         __u16 be_start_address;
 279
 280         dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
 281
 282         /* Read in blocks of 64 bytes
 283          * (TI firmware can't handle more than 64 byte reads)
 284          */
 285         while (length) {
 286                 if (length > 64)
 287                         read_length= 64;
 288                 else
 289                         read_length = (__u8)length;
 290
 291                 if (read_length > 1) {
 292                         dbg ("%s - @ %x for %d", __FUNCTION__,
 293                              start_address, read_length);
 294                 }
 295                 be_start_address = cpu_to_be16 (start_address);
 296                 status = TIReadVendorRequestSync (dev,
 297                                                   UMPC_MEMORY_READ,     // Request
 298                                                   (__u16)address_type,  // wValue (Address type)
 299                                                   be_start_address,     // wIndex (Address to read)
 300                                                   buffer,               // TransferBuffer
 301                                                   read_length); // TransferBufferLength
 302
 303                 if (status) {
 304                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 305                         return status;
 306                 }
 307
 308                 if (read_length > 1) {
 309                         usb_serial_debug_data (__FILE__, __FUNCTION__,
 310                                                read_length, buffer);
 311                 }
 312
 313                 /* Update pointers/length */
 314                 start_address += read_length;
 315                 buffer += read_length;
 316                 length -= read_length;
 317         }
 318
 319         return status;
 320 }
 321
 322 int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
 323 {
 324         return TIReadDownloadMemory (dev,
 325                                      start_address,
 326                                      length,
 327                                      DTK_ADDR_SPACE_XDATA,
 328                                      buffer);
 329 }
 330
 331 /* Read edgeport memory to a given block */
 332 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
 333 {
 334         int status = 0;
 335         int i;
 336
 337         for (i=0; i< length; i++) {
 338                 status = TIReadVendorRequestSync (serial->serial->dev,
 339                                         UMPC_MEMORY_READ,               // Request
 340                                         serial->TI_I2C_Type,            // wValue (Address type)
 341                                         (__u16)(start_address+i),       // wIndex
 342                                         &buffer[i],                     // TransferBuffer
 343                                         0x01);                          // TransferBufferLength
 344                 if (status) {
 345                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 346                         return status;
 347                 }
 348         }
 349
 350         dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
 351         usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
 352
 353         serial->TiReadI2C = 1;
 354
 355         return status;
 356 }
 357
 358 /* Write given block to TI EPROM memory */
 359 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 360 {
 361         int status = 0;
 362         int i;
 363         __u8 temp;
 364
 365         /* Must do a read before write */
 366         if (!serial->TiReadI2C) {
 367                 status = TIReadBootMemory(serial, 0, 1, &temp);
 368                 if (status)
 369                         return status;
 370         }
 371
 372         for (i=0; i < length; ++i) {
 373                 status = TISendVendorRequestSync (serial->serial->dev,
 374                                                 UMPC_MEMORY_WRITE,              // Request
 375                                                 buffer[i],                      // wValue
 376                                                 (__u16)(i+start_address),       // wIndex
 377                                                 NULL,                           // TransferBuffer
 378                                                 0);                             // TransferBufferLength
 379                 if (status)
 380                         return status;
 381         }
 382
 383         dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
 384         usb_serial_debug_data (__FILE__, __FUNCTION__, length, buffer);
 385
 386         return status;
 387 }
 388
 389
 390 /* Write edgeport I2C memory to TI chip */
 391 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
 392 {
 393         int status = 0;
 394         int write_length;
 395         __u16 be_start_address;
 396
 397         /* We can only send a maximum of 1 aligned byte page at a time */
 398
 399         /* calulate the number of bytes left in the first page */
 400         write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
 401
 402         if (write_length > length)
 403                 write_length = length;
 404
 405         dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 406         usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
 407
 408         /* Write first page */
 409         be_start_address = cpu_to_be16 (start_address);
 410         status = TISendVendorRequestSync (serial->serial->dev,
 411                                         UMPC_MEMORY_WRITE,      // Request
 412                                         (__u16)address_type,    // wValue
 413                                         be_start_address,       // wIndex
 414                                         buffer,                 // TransferBuffer
 415                                         write_length);
 416         if (status) {
 417                 dbg ("%s - ERROR %d", __FUNCTION__, status);
 418                 return status;
 419         }
 420
 421         length          -= write_length;
 422         start_address   += write_length;
 423         buffer          += write_length;
 424
 425         /* We should be aligned now -- can write max page size bytes at a time */
 426         while (length) {
 427                 if (length > EPROM_PAGE_SIZE)
 428                         write_length = EPROM_PAGE_SIZE;
 429                 else
 430                         write_length = length;
 431
 432                 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 433                 usb_serial_debug_data (__FILE__, __FUNCTION__, write_length, buffer);
 434
 435                 /* Write next page */
 436                 be_start_address = cpu_to_be16 (start_address);
 437                 status = TISendVendorRequestSync (serial->serial->dev,
 438                                                 UMPC_MEMORY_WRITE,      // Request
 439                                                 (__u16)address_type,    // wValue
 440                                                 be_start_address,       // wIndex
 441                                                 buffer,                 // TransferBuffer
 442                                                 write_length);          // TransferBufferLength
 443                 if (status) {
 444                         dbg ("%s - ERROR %d", __FUNCTION__, status);
 445                         return status;
 446                 }
 447
 448                 length          -= write_length;
 449                 start_address   += write_length;
 450                 buffer          += write_length;
 451         }
 452         return status;
 453 }
 454
 455 /* Examine the UMP DMA registers and LSR
 456  *
 457  * Check the MSBit of the X and Y DMA byte count registers.
 458  * A zero in this bit indicates that the TX DMA buffers are empty
 459  * then check the TX Empty bit in the UART.
 460  */
 461 static int TIIsTxActive (struct edgeport_port *port)
 462 {
 463         int status;
 464         struct out_endpoint_desc_block *oedb;
 465         __u8 *lsr;
 466         int bytes_left = 0;
 467
 468         oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
 469         if (!oedb) {
 470                 err ("%s - out of memory", __FUNCTION__);
 471                 return -ENOMEM;
 472         }
 473
 474         lsr = kmalloc (1, GFP_KERNEL);  /* Sigh, that's right, just one byte,
 475                                            as not all platforms can do DMA
 476                                            from stack */
 477         if (!lsr) {
 478                 kfree(oedb);
 479                 return -ENOMEM;
 480         }
 481         /* Read the DMA Count Registers */
 482         status = TIReadRam (port->port->serial->dev,
 483                             port->dma_address,
 484                             sizeof( *oedb),
 485                             (void *)oedb);
 486
 487         if (status)
 488                 goto exit_is_tx_active;
 489
 490         dbg ("%s - XByteCount    0x%X", __FUNCTION__, oedb->XByteCount);
 491
 492         /* and the LSR */
 493         status = TIReadRam (port->port->serial->dev,
 494                             port->uart_base + UMPMEM_OFFS_UART_LSR,
 495                             1,
 496                             lsr);
 497
 498         if (status)
 499                 goto exit_is_tx_active;
 500         dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
 501
 502         /* If either buffer has data or we are transmitting then return TRUE */
 503         if ((oedb->XByteCount & 0x80 ) != 0 )
 504                 bytes_left += 64;
 505
 506         if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
 507                 bytes_left += 1;
 508
 509         /* We return Not Active if we get any kind of error */
 510 exit_is_tx_active:
 511         dbg ("%s - return %d", __FUNCTION__, bytes_left );
 512
 513         kfree(lsr);
 514         kfree(oedb);
 515         return bytes_left;
 516 }
 517
 518 static void TIChasePort(struct edgeport_port *port)
 519 {
 520         int loops;
 521         int last_count;
 522         int write_size;
 523
 524 restart_tx_loop:
 525         // Base the LoopTime on the baud rate
 526         if (port->baud_rate == 0)
 527                 port->baud_rate = 1200;
 528
 529         write_size = port->tx.count;
 530         loops = max(100, (100*write_size)/(port->baud_rate/10));
 531         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 532              write_size, port->baud_rate, loops);
 533
 534         while (1) {
 535                 // Save Last count
 536                 last_count = port->tx.count;
 537
 538                 dbg ("%s - Tx Buffer Size = %d loops = %d", __FUNCTION__,
 539                      last_count, loops);
 540
 541                 /* Is the Edgeport Buffer empty? */
 542                 if (port->tx.count == 0)
 543                         break;
 544
 545                 /* Block the thread for 10ms */
 546                 wait_ms (10);
 547
 548                 if (last_count == port->tx.count) {
 549                         /* No activity.. count down. */
 550                         --loops;
 551                         if (loops == 0) {
 552                                 dbg ("%s - Wait for TxEmpty - TIMEOUT",
 553                                      __FUNCTION__);
 554                                 return;
 555                         }
 556                 } else {
 557                         /* Reset timeout value back to a minimum of 1 second */
 558                         dbg ("%s - Wait for TxEmpty  Reset Count", __FUNCTION__);
 559                         goto restart_tx_loop;
 560                 }
 561         }
 562
 563         dbg ("%s - Local Tx Buffer Empty -- Waiting for TI UMP to EMPTY X/Y and FIFO",
 564              __FUNCTION__);
 565
 566         write_size = TIIsTxActive (port);
 567         loops = max(50, (100*write_size)/(port->baud_rate/10));
 568         dbg ("%s - write_size %d, baud %d loop = %d", __FUNCTION__,
 569              write_size, port->baud_rate, loops);
 570
 571         while (1) {
 572                 /* This function takes 4 ms; */
 573                 if (!TIIsTxActive (port)) {
 574                         /* Delay a few char times */
 575                         wait_ms (50);
 576                         dbg ("%s - Empty", __FUNCTION__);
 577                         return;
 578                 }
 579
 580                 --loops;
 581                 if (loops == 0) {
 582                         dbg ("%s - TIMEOUT", __FUNCTION__);
 583                         return;
 584                 }
 585         }
 586 }
 587
 588 static int TIChooseConfiguration (struct usb_device *dev)
 589 {
 590         // There may be multiple configurations on this device, in which case
 591         // we would need to read and parse all of them to find out which one
 592         // we want. However, we just support one config at this point,
 593         // configuration # 1, which is Config Descriptor 0.
 594
 595         dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->bNumInterfaces);
 596         dbg ("%s - MAX Power            = %d", __FUNCTION__, dev->config->MaxPower*2);
 597
 598         if (dev->config->bNumInterfaces != 1) {
 599                 err ("%s - bNumInterfaces is not 1, ERROR!", __FUNCTION__);
 600                 return -ENODEV;
 601         }
 602
 603         return 0;
 604 }
 605
 606 int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 607 {
 608         int status;
 609
 610         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 611                 status = TIReadDownloadMemory (serial->serial->dev,
 612                                                start_address,
 613                                                length,
 614                                                serial->TI_I2C_Type,
 615                                                buffer);
 616         } else {
 617                 status = TIReadBootMemory (serial,
 618                                            start_address,
 619                                            length,
 620                                            buffer);
 621         }
 622
 623         return status;
 624 }
 625
 626 int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 627 {
 628         if (serial->product_info.TiMode == TI_MODE_BOOT)
 629                 return TIWriteBootMemory (serial,
 630                                           start_address,
 631                                           length,
 632                                           buffer);
 633
 634         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 635                 return TIWriteDownloadI2C (serial,
 636                                            start_address,
 637                                            length,
 638                                            serial->TI_I2C_Type,
 639                                            buffer);
 640
 641         return -EINVAL;
 642 }
 643
 644
 645
 646 /* Read a descriptor header from I2C based on type */
 647 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
 648 {
 649         int start_address;
 650         int status;
 651
 652         /* Search for requested descriptor in I2C */
 653         start_address = 2;
 654         do {
 655                 status = TIReadRom (serial,
 656                                    start_address,
 657                                    sizeof(struct ti_i2c_desc),
 658                                    (__u8 *)rom_desc );
 659                 if (status)
 660                         return 0;
 661
 662                 if (rom_desc->Type == desc_type)
 663                         return start_address;
 664
 665                 start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
 666
 667         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 668
 669         return 0;
 670 }
 671
 672 /* Validate descriptor checksum */
 673 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 674 {
 675         __u16 i;
 676         __u8 cs = 0;
 677
 678         for (i=0; i < rom_desc->Size; i++) {
 679                 cs = (__u8)(cs + buffer[i]);
 680         }
 681         if (cs != rom_desc->CheckSum) {
 682                 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
 683                 return -EINVAL;
 684         }
 685         return 0;
 686 }
 687
 688 /* Make sure that the I2C image is good */
 689 static int TiValidateI2cImage (struct edgeport_serial *serial)
 690 {
 691         int status = 0;
 692         struct ti_i2c_desc *rom_desc;
 693         int start_address = 2;
 694         __u8 *buffer;
 695
 696         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 697         if (!rom_desc) {
 698                 err ("%s - out of memory", __FUNCTION__);
 699                 return -ENOMEM;
 700         }
 701         buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
 702         if (!buffer) {
 703                 err ("%s - out of memory when allocating buffer", __FUNCTION__);
 704                 kfree (rom_desc);
 705                 return -ENOMEM;
 706         }
 707
 708         // Read the first byte (Signature0) must be 0x52
 709         status = TIReadRom (serial, 0, 1, buffer);
 710         if (status)
 711                 goto ExitTiValidateI2cImage;
 712
 713         if (*buffer != 0x52) {
 714                 err ("%s - invalid buffer signature", __FUNCTION__);
 715                 status = -ENODEV;
 716                 goto ExitTiValidateI2cImage;
 717         }
 718
 719         do {
 720                 // Validate the I2C
 721                 status = TIReadRom (serial,
 722                                 start_address,
 723                                 sizeof(struct ti_i2c_desc),
 724                                 (__u8 *)rom_desc);
 725                 if (status)
 726                         break;
 727
 728                 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
 729                         status = -ENODEV;
 730                         dbg ("%s - structure too big, erroring out.", __FUNCTION__);
 731                         break;
 732                 }
 733
 734                 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
 735
 736                 // Skip type 2 record
 737                 if ((rom_desc->Type & 0x0f) != I2C_DESC_TYPE_FIRMWARE_BASIC) {
 738                         // Read the descriptor data
 739                         status = TIReadRom(serial,
 740                                                 start_address+sizeof(struct ti_i2c_desc),
 741                                                 rom_desc->Size,
 742                                                 buffer);
 743                         if (status)
 744                                 break;
 745
 746                         status = ValidChecksum(rom_desc, buffer);
 747                         if (status)
 748                                 break;
 749                 }
 750                 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
 751
 752         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
 753
 754         if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
 755                 status = -ENODEV;
 756
 757 ExitTiValidateI2cImage:
 758         kfree (buffer);
 759         kfree (rom_desc);
 760         return status;
 761 }
 762
 763 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
 764 {
 765         int status;
 766         int start_address;
 767         struct ti_i2c_desc *rom_desc;
 768         struct edge_ti_manuf_descriptor *desc;
 769
 770         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 771         if (!rom_desc) {
 772                 err ("%s - out of memory", __FUNCTION__);
 773                 return -ENOMEM;
 774         }
 775         start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
 776
 777         if (!start_address) {
 778                 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
 779                 status = -ENODEV;
 780                 goto exit;
 781         }
 782
 783         // Read the descriptor data
 784         status = TIReadRom (serial,
 785                                 start_address+sizeof(struct ti_i2c_desc),
 786                                 rom_desc->Size,
 787                                 buffer);
 788         if (status)
 789                 goto exit;
 790
 791         status = ValidChecksum(rom_desc, buffer);
 792
 793         desc = (struct edge_ti_manuf_descriptor *)buffer;
 794         dbg ( "%s - IonConfig      0x%x", __FUNCTION__, desc->IonConfig         );
 795         dbg ( "%s - Version          %d", __FUNCTION__, desc->Version           );
 796         dbg ( "%s - Cpu/Board      0x%x", __FUNCTION__, desc->CpuRev_BoardRev   );
 797         dbg ( "%s - NumPorts         %d", __FUNCTION__, desc->NumPorts          );
 798         dbg ( "%s - NumVirtualPorts  %d", __FUNCTION__, desc->NumVirtualPorts   );
 799         dbg ( "%s - TotalPorts       %d", __FUNCTION__, desc->TotalPorts        );
 800
 801 exit:
 802         kfree (rom_desc);
 803         return status;
 804 }
 805
 806 /* Build firmware header used for firmware update */
 807 static int BuildI2CFirmwareHeader (__u8 *header)
 808 {
 809         __u8 *buffer;
 810         int buffer_size;
 811         int i;
 812         __u8 cs = 0;
 813         struct ti_i2c_desc *i2c_header;
 814         struct ti_i2c_image_header *img_header;
 815         struct ti_i2c_firmware_rec *firmware_rec;
 816
 817         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
 818         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
 819         // will download the latest firmware (padded to 15.5k) into the UMP ram.
 820         // And finally when the device comes back up in download mode the driver will cause
 821         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
 822         // the record type from 0xf2 to 0x02.
 823
 824         // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
 825         buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
 826
 827         buffer = kmalloc (buffer_size, GFP_KERNEL);
 828         if (!buffer) {
 829                 err ("%s - out of memory", __FUNCTION__);
 830                 return -ENOMEM;
 831         }
 832
 833         // Set entire image of 0xffs
 834         memset (buffer, 0xff, buffer_size);
 835
 836         // Copy version number into firmware record
 837         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 838
 839         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 840         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 841
 842         // Pointer to fw_down memory image
 843         img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
 844
 845         memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
 846                 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
 847                 img_header->Length);
 848
 849         for (i=0; i < buffer_size; i++) {
 850                 cs = (__u8)(cs + buffer[i]);
 851         }
 852
 853         kfree (buffer);
 854
 855         // Build new header
 856         i2c_header =  (struct ti_i2c_desc *)header;
 857         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 858
 859         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 860         i2c_header->Size        = (__u16)buffer_size;
 861         i2c_header->CheckSum    = cs;
 862         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 863         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 864
 865         return 0;
 866 }
 867
 868 /* Try to figure out what type of I2c we have */
 869 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
 870 {
 871         int status;
 872         __u8 data;
 873
 874         // Try to read type 2
 875         status = TIReadVendorRequestSync (serial->serial->dev,
 876                                         UMPC_MEMORY_READ,               // Request
 877                                         DTK_ADDR_SPACE_I2C_TYPE_II,     // wValue (Address type)
 878                                         0,                              // wIndex
 879                                         &data,                          // TransferBuffer
 880                                         0x01);                          // TransferBufferLength
 881         if (status)
 882                 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
 883         else
 884                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 885         if ((!status) && data == 0x52) {
 886                 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
 887                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 888                 return 0;
 889         }
 890
 891         // Try to read type 3
 892         status = TIReadVendorRequestSync (serial->serial->dev,
 893                                         UMPC_MEMORY_READ,               // Request
 894                                         DTK_ADDR_SPACE_I2C_TYPE_III,    // wValue (Address type)
 895                                         0,                              // wIndex
 896                                         &data,                          // TransferBuffer
 897                                         0x01);                          // TransferBufferLength
 898         if (status)
 899                 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
 900         else
 901                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 902         if ((!status) && data == 0x52) {
 903                 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
 904                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 905                 return 0;
 906         }
 907
 908         dbg ("%s - Unknown", __FUNCTION__);
 909         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 910         return -ENODEV;
 911 }
 912
 913 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
 914 {
 915         int status;
 916
 917         status = usb_bulk_msg (serial->dev,
 918                                 usb_sndbulkpipe(serial->dev,
 919                                                 serial->port[0].bulk_out_endpointAddress),
 920                                 buffer,
 921                                 length,
 922                                 num_sent,
 923                                 HZ);
 924         return status;
 925 }
 926
 927 /* Download given firmware image to the device (IN BOOT MODE) */
 928 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
 929 {
 930         int status = 0;
 931         int pos;
 932         int transfer;
 933         int done;
 934
 935         // Transfer firmware image
 936         for (pos = 0; pos < image_length; ) {
 937                 // Read the next buffer from file
 938                 transfer = image_length - pos;
 939                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 940                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 941
 942                 // Transfer data
 943                 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
 944                 if (status)
 945                         break;
 946                 // Advance buffer pointer
 947                 pos += done;
 948         }
 949
 950         return status;
 951 }
 952
 953 // FIXME!!!
 954 static int TIConfigureBootDevice (struct usb_device *dev)
 955 {
 956         return 0;
 957 }
 958
 959 /**
 960  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 961  *
 962  * This routine downloads the main operating code into the TI5052, using the
 963  * boot code already burned into E2PROM or ROM.
 964  */
 965 static int TIDownloadFirmware (struct edgeport_serial *serial)
 966 {
 967         int status = 0;
 968         int start_address;
 969         struct edge_ti_manuf_descriptor *ti_manuf_desc;
 970         struct usb_interface_descriptor *interface;
 971         int download_cur_ver;
 972         int download_new_ver;
 973
 974         /* This routine is entered by both the BOOT mode and the Download mode
 975          * We can determine which code is running by the reading the config
 976          * descriptor and if we have only one bulk pipe it is in boot mode
 977          */
 978         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
 979
 980         /* Default to type 2 i2c */
 981         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 982
 983         status = TIChooseConfiguration (serial->serial->dev);
 984         if (status)
 985                 return status;
 986
 987         interface = serial->serial->dev->config->interface->altsetting;
 988         if (!interface) {
 989                 err ("%s - no interface set, error!", __FUNCTION__);
 990                 return -ENODEV;
 991         }
 992
 993         // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
 994         // if we have more than one endpoint we are definitely in download mode
 995         if (interface->bNumEndpoints > 1)
 996                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
 997         else
 998                 // Otherwise we will remain in configuring mode
 999                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1000
1001         // Save Download Version Number
1002         OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1003         OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1004         OperationalCodeImageVersion.BuildNumber  = PagableOperationalCodeImageVersion.BuildNumber;
1005
1006         /********************************************************************/
1007         /* Download Mode */
1008         /********************************************************************/
1009         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1010                 struct ti_i2c_desc *rom_desc;
1011
1012                 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1013
1014                 status = TiValidateI2cImage (serial);
1015                 if (status) {
1016                         dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1017                              __FUNCTION__);
1018                         return status;
1019                 }
1020
1021                 /* Validate Hardware version number
1022                  * Read Manufacturing Descriptor from TI Based Edgeport
1023                  */
1024                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1025                 if (!ti_manuf_desc) {
1026                         err ("%s - out of memory.", __FUNCTION__);
1027                         return -ENOMEM;
1028                 }
1029                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1030                 if (status) {
1031                         kfree (ti_manuf_desc);
1032                         return status;
1033                 }
1034
1035                 // Check version number of ION descriptor
1036                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1037                         dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1038                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1039                         kfree (ti_manuf_desc);
1040                         return -EINVAL;
1041                 }
1042
1043                 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1044                 if (!rom_desc) {
1045                         err ("%s - out of memory.", __FUNCTION__);
1046                         kfree (ti_manuf_desc);
1047                         return -ENOMEM;
1048                 }
1049
1050                 // Search for type 2 record (firmware record)
1051                 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1052                         struct ti_i2c_firmware_rec *firmware_version;
1053                         __u8 record;
1054
1055                         dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1056
1057                         firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1058                         if (!firmware_version) {
1059                                 err ("%s - out of memory.", __FUNCTION__);
1060                                 kfree (rom_desc);
1061                                 kfree (ti_manuf_desc);
1062                                 return -ENOMEM;
1063                         }
1064
1065                         // Validate version number
1066                         // Read the descriptor data
1067                         status = TIReadRom (serial,
1068                                         start_address+sizeof(struct ti_i2c_desc),
1069                                         sizeof(struct ti_i2c_firmware_rec),
1070                                         (__u8 *)firmware_version);
1071                         if (status) {
1072                                 kfree (firmware_version);
1073                                 kfree (rom_desc);
1074                                 kfree (ti_manuf_desc);
1075                                 return status;
1076                         }
1077
1078                         // Check version number of download with current version in I2c
1079                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1080                                            (firmware_version->Ver_Minor);
1081                         download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1082                                            (OperationalCodeImageVersion.MinorVersion);
1083
1084                         dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
1085                              __FUNCTION__,
1086                              firmware_version->Ver_Major,
1087                              firmware_version->Ver_Minor,
1088                              OperationalCodeImageVersion.MajorVersion,
1089                              OperationalCodeImageVersion.MinorVersion);
1090
1091                         // Check if we have an old version in the I2C and update if necessary
1092                         if (download_cur_ver != download_new_ver) {
1093                                 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1094                                      __FUNCTION__,
1095                                      firmware_version->Ver_Major,
1096                                      firmware_version->Ver_Minor,
1097                                      OperationalCodeImageVersion.MajorVersion,
1098                                      OperationalCodeImageVersion.MinorVersion);
1099
1100                                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1101                                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1102                                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1103                                 // And finally when the device comes back up in download mode the driver will cause
1104                                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1105                                 // the record type from 0xf2 to 0x02.
1106
1107                                 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1108
1109                                 // Change the I2C Firmware record type to 0xf2 to trigger an update
1110                                 status = TIWriteRom (serial,
1111                                                         start_address,
1112                                                         sizeof(record),
1113                                                         &record);
1114                                 if (status) {
1115                                         kfree (firmware_version);
1116                                         kfree (rom_desc);
1117                                         kfree (ti_manuf_desc);
1118                                         return status;
1119                                 }
1120
1121                                 // verify the write -- must do this in order for write to
1122                                 // complete before we do the hardware reset
1123                                 status = TIReadRom (serial,
1124                                                         start_address,
1125                                                         sizeof(record),
1126                                                         &record);
1127
1128                                 if (status) {
1129                                         kfree (firmware_version);
1130                                         kfree (rom_desc);
1131                                         kfree (ti_manuf_desc);
1132                                         return status;
1133                                 }
1134
1135                                 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1136                                         err ("%s - error resetting device", __FUNCTION__);
1137                                         kfree (firmware_version);
1138                                         kfree (rom_desc);
1139                                         kfree (ti_manuf_desc);
1140                                         return -ENODEV;
1141                                 }
1142
1143                                 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1144
1145                                 // Reset UMP -- Back to BOOT MODE
1146                                 status = TISendVendorRequestSync (serial->serial->dev,
1147                                                                 UMPC_HARDWARE_RESET,    // Request
1148                                                                 0,                      // wValue
1149                                                                 0,                      // wIndex
1150                                                                 NULL,                   // TransferBuffer
1151                                                                 0);                     // TransferBufferLength
1152
1153                                 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1154
1155                                 /* return an error on purpose. */
1156                                 kfree (firmware_version);
1157                                 kfree (rom_desc);
1158                                 kfree (ti_manuf_desc);
1159                                 return -ENODEV;
1160                         }
1161                         kfree (firmware_version);
1162                 }
1163                 // Search for type 0xF2 record (firmware blank record)
1164                 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1165                         #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1166                         __u8 *header;
1167                         __u8 *vheader;
1168
1169                         header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
1170                         if (!header) {
1171                                 err ("%s - out of memory.", __FUNCTION__);
1172                                 kfree (rom_desc);
1173                                 kfree (ti_manuf_desc);
1174                                 return -ENOMEM;
1175                         }
1176
1177                         vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1178                         if (!vheader) {
1179                                 err ("%s - out of memory.", __FUNCTION__);
1180                                 kfree (header);
1181                                 kfree (rom_desc);
1182                                 kfree (ti_manuf_desc);
1183                                 return -ENOMEM;
1184                         }
1185
1186                         dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1187
1188                         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1189                         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1190                         // will download the latest firmware (padded to 15.5k) into the UMP ram.
1191                         // And finally when the device comes back up in download mode the driver will cause
1192                         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1193                         // the record type from 0xf2 to 0x02.
1194                         status = BuildI2CFirmwareHeader(header);
1195                         if (status) {
1196                                 kfree (vheader);
1197                                 kfree (header);
1198                                 kfree (rom_desc);
1199                                 kfree (ti_manuf_desc);
1200                                 return status;
1201                         }
1202
1203                         // Update I2C with type 0xf2 record with correct size and checksum
1204                         status = TIWriteRom (serial,
1205                                                 start_address,
1206                                                 HEADER_SIZE,
1207                                                 header);
1208                         if (status) {
1209                                 kfree (vheader);
1210                                 kfree (header);
1211                                 kfree (rom_desc);
1212                                 kfree (ti_manuf_desc);
1213                                 return status;
1214                         }
1215
1216                         // verify the write -- must do this in order for write to
1217                         // complete before we do the hardware reset
1218                         status = TIReadRom (serial,
1219                                                 start_address,
1220                                                 HEADER_SIZE,
1221                                                 vheader);
1222
1223                         if (status) {
1224                                 dbg ("%s - can't read header back", __FUNCTION__);
1225                                 kfree (vheader);
1226                                 kfree (header);
1227                                 kfree (rom_desc);
1228                                 kfree (ti_manuf_desc);
1229                                 return status;
1230                         }
1231                         if (memcmp(vheader, header, HEADER_SIZE)) {
1232                                 dbg ("%s - write download record failed", __FUNCTION__);
1233                                 kfree (vheader);
1234                                 kfree (header);
1235                                 kfree (rom_desc);
1236                                 kfree (ti_manuf_desc);
1237                                 return status;
1238                         }
1239
1240                         kfree (vheader);
1241                         kfree (header);
1242
1243                         dbg ("%s - Start firmware update", __FUNCTION__);
1244
1245                         // Tell firmware to copy download image into I2C
1246                         status = TISendVendorRequestSync (serial->serial->dev,
1247                                                 UMPC_COPY_DNLD_TO_I2C,  // Request
1248                                                 0,                      // wValue
1249                                                 0,                      // wIndex
1250                                                 NULL,                   // TransferBuffer
1251                                                 0);                     // TransferBufferLength
1252
1253                         dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1254                         if (status) {
1255                                 dbg ("%s - UMPC_COPY_DNLD_TO_I2C failed", __FUNCTION__);
1256                                 kfree (rom_desc);
1257                                 kfree (ti_manuf_desc);
1258                                 return status;
1259                         }
1260                 }
1261
1262                 // The device is running the download code
1263                 kfree (rom_desc);
1264                 kfree (ti_manuf_desc);
1265                 return 0;
1266         }
1267
1268         /********************************************************************/
1269         /* Boot Mode */
1270         /********************************************************************/
1271         dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1272              __FUNCTION__);
1273
1274         // Configure the TI device so we can use the BULK pipes for download
1275         status = TIConfigureBootDevice (serial->serial->dev);
1276         if (status)
1277                 return status;
1278
1279         if (serial->serial->dev->descriptor.idVendor != USB_VENDOR_ID_ION) {
1280                 dbg ("%s - VID = 0x%x", __FUNCTION__,
1281                      serial->serial->dev->descriptor.idVendor);
1282                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1283                 goto StayInBootMode;
1284         }
1285
1286         // We have an ION device (I2c Must be programmed)
1287         // Determine I2C image type
1288         if (TIGetI2cTypeInBootMode(serial)) {
1289                 goto StayInBootMode;
1290         }
1291
1292         // Registry variable set?
1293         if (TIStayInBootMode) {
1294                 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1295                 goto StayInBootMode;
1296         }
1297
1298         // Check for ION Vendor ID and that the I2C is valid
1299         if (!TiValidateI2cImage(serial)) {
1300                 struct ti_i2c_image_header *header;
1301                 int i;
1302                 __u8 cs = 0;
1303                 __u8 *buffer;
1304                 int buffer_size;
1305
1306                 /* Validate Hardware version number
1307                  * Read Manufacturing Descriptor from TI Based Edgeport
1308                  */
1309                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1310                 if (!ti_manuf_desc) {
1311                         err ("%s - out of memory.", __FUNCTION__);
1312                         return -ENOMEM;
1313                 }
1314                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1315                 if (status) {
1316                         kfree (ti_manuf_desc);
1317                         goto StayInBootMode;
1318                 }
1319
1320                 // Check for version 2
1321                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1322                         dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1323                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1324                         kfree (ti_manuf_desc);
1325                         goto StayInBootMode;
1326                 }
1327
1328                 kfree (ti_manuf_desc);
1329
1330                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1331                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1332                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1333                 // And finally when the device comes back up in download mode the driver will cause
1334                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1335                 // the record type from 0xf2 to 0x02.
1336
1337                 /*
1338                  * Do we really have to copy the whole firmware image,
1339                  * or could we do this in place!
1340                  */
1341
1342                 // Allocate a 15.5k buffer + 3 byte header
1343                 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1344                 buffer = kmalloc (buffer_size, GFP_KERNEL);
1345                 if (!buffer) {
1346                         err ("%s - out of memory", __FUNCTION__);
1347                         return -ENOMEM;
1348                 }
1349
1350                 // Initialize the buffer to 0xff (pad the buffer)
1351                 memset (buffer, 0xff, buffer_size);
1352
1353                 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1354
1355                 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1356                         cs = (__u8)(cs + buffer[i]);
1357                 }
1358
1359                 header = (struct ti_i2c_image_header *)buffer;
1360
1361                 // update length and checksum after padding
1362                 header->Length   = (__u16)(buffer_size - sizeof(struct ti_i2c_image_header));
1363                 header->CheckSum = cs;
1364
1365                 // Download the operational code
1366                 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1367                 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1368
1369                 kfree (buffer);
1370
1371                 if (status) {
1372                         dbg ("%s - Error downloading operational code image", __FUNCTION__);
1373                         return status;
1374                 }
1375
1376                 // Device will reboot
1377                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1378
1379                 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1380
1381                 /* return an error on purpose */
1382                 return -ENODEV;
1383         }
1384
1385 StayInBootMode:
1386         // Eprom is invalid or blank stay in boot mode
1387         dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1388         serial->product_info.TiMode = TI_MODE_BOOT;
1389
1390         return 0;
1391 }
1392
1393
1394 static int TISetDtr (struct edgeport_port *port)
1395 {
1396         int port_number = port->port->number - port->port->serial->minor;
1397
1398         dbg ("%s", __FUNCTION__);
1399         port->shadow_mcr |= MCR_DTR;
1400
1401         return TIWriteCommandSync (port->port->serial->dev,
1402                                 UMPC_SET_CLR_DTR,
1403                                 (__u8)(UMPM_UART1_PORT + port_number),
1404                                 1,      /* set */
1405                                 NULL,
1406                                 0);
1407 }
1408
1409 static int TIClearDtr (struct edgeport_port *port)
1410 {
1411         int port_number = port->port->number - port->port->serial->minor;
1412
1413         dbg ("%s", __FUNCTION__);
1414         port->shadow_mcr &= ~MCR_DTR;
1415
1416         return TIWriteCommandSync (port->port->serial->dev,
1417                                 UMPC_SET_CLR_DTR,
1418                                 (__u8)(UMPM_UART1_PORT + port_number),
1419                                 0,      /* clear */
1420                                 NULL,
1421                                 0);
1422 }
1423
1424 static int TISetRts (struct edgeport_port *port)
1425 {
1426         int port_number = port->port->number - port->port->serial->minor;
1427
1428         dbg ("%s", __FUNCTION__);
1429         port->shadow_mcr |= MCR_RTS;
1430
1431         return TIWriteCommandSync (port->port->serial->dev,
1432                                 UMPC_SET_CLR_RTS,
1433                                 (__u8)(UMPM_UART1_PORT + port_number),
1434                                 1,      /* set */
1435                                 NULL,
1436                                 0);
1437 }
1438
1439 static int TIClearRts (struct edgeport_port *port)
1440 {
1441         int port_number = port->port->number - port->port->serial->minor;
1442
1443         dbg ("%s", __FUNCTION__);
1444         port->shadow_mcr &= ~MCR_RTS;
1445
1446         return TIWriteCommandSync (port->port->serial->dev,
1447                                 UMPC_SET_CLR_RTS,
1448                                 (__u8)(UMPM_UART1_PORT + port_number),
1449                                 0,      /* clear */
1450                                 NULL,
1451                                 0);
1452 }
1453
1454 static int TISetLoopBack (struct edgeport_port *port)
1455 {
1456         int port_number = port->port->number - port->port->serial->minor;
1457
1458         dbg ("%s", __FUNCTION__);
1459
1460         return TIWriteCommandSync (port->port->serial->dev,
1461                                 UMPC_SET_CLR_LOOPBACK,
1462                                 (__u8)(UMPM_UART1_PORT + port_number),
1463                                 1,      /* set */
1464                                 NULL,
1465                                 0);
1466 }
1467
1468 static int TIClearLoopBack (struct edgeport_port *port)
1469 {
1470         int port_number = port->port->number - port->port->serial->minor;
1471
1472         dbg ("%s", __FUNCTION__);
1473
1474         return TIWriteCommandSync (port->port->serial->dev,
1475                                 UMPC_SET_CLR_LOOPBACK,
1476                                 (__u8)(UMPM_UART1_PORT + port_number),
1477                                 0,      /* clear */
1478                                 NULL,
1479                                 0);
1480 }
1481
1482 static int TISetBreak (struct edgeport_port *port)
1483 {
1484         int port_number = port->port->number - port->port->serial->minor;
1485
1486         dbg ("%s", __FUNCTION__);
1487
1488         return TIWriteCommandSync (port->port->serial->dev,
1489                                 UMPC_SET_CLR_BREAK,
1490                                 (__u8)(UMPM_UART1_PORT + port_number),
1491                                 1,      /* set */
1492                                 NULL,
1493                                 0);
1494 }
1495
1496 static int TIClearBreak (struct edgeport_port *port)
1497 {
1498         int port_number = port->port->number - port->port->serial->minor;
1499
1500         dbg ("%s", __FUNCTION__);
1501
1502         return TIWriteCommandSync (port->port->serial->dev,
1503                                 UMPC_SET_CLR_BREAK,
1504                                 (__u8)(UMPM_UART1_PORT + port_number),
1505                                 0,      /* clear */
1506                                 NULL,
1507                                 0);
1508 }
1509
1510 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1511 {
1512         int status = 0;
1513
1514         dbg ("%s - %x", __FUNCTION__, mcr);
1515
1516         if (mcr & MCR_DTR)
1517                 status = TISetDtr (port);
1518         else
1519                 status = TIClearDtr (port);
1520
1521         if (status)
1522                 return status;
1523
1524         if (mcr & MCR_RTS)
1525                 status = TISetRts (port);
1526         else
1527                 status = TIClearRts (port);
1528
1529         if (status)
1530                 return status;
1531
1532         if (mcr & MCR_LOOPBACK)
1533                 status = TISetLoopBack (port);
1534         else
1535                 status = TIClearLoopBack (port);
1536
1537         return status;
1538 }
1539
1540
1541
1542 /* Convert TI LSR to standard UART flags */
1543 static __u8 MapLineStatus (__u8 ti_lsr)
1544 {
1545         __u8 lsr = 0;
1546
1547 #define MAP_FLAG(flagUmp, flagUart)    \
1548         if (ti_lsr & flagUmp) lsr |= flagUart;
1549
1550         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1551         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1552         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1553         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1554         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* receive data available */
1555         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* transmit holding register empty */
1556
1557 #undef MAP_FLAG
1558
1559         return lsr;
1560 }
1561
1562 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1563 {
1564         struct async_icount *icount;
1565
1566         dbg ("%s - %02x", __FUNCTION__, msr);
1567
1568         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1569                 icount = &edge_port->icount;
1570
1571                 /* update input line counters */
1572                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1573                         icount->cts++;
1574                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1575                         icount->dsr++;
1576                 if (msr & EDGEPORT_MSR_DELTA_CD)
1577                         icount->dcd++;
1578                 if (msr & EDGEPORT_MSR_DELTA_RI)
1579                         icount->rng++;
1580                 wake_up_interruptible (&edge_port->delta_msr_wait);
1581         }
1582
1583         /* Save the new modem status */
1584         edge_port->shadow_msr = msr & 0xf0;
1585
1586         return;
1587 }
1588
1589 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1590 {
1591         struct async_icount *icount;
1592         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1593
1594         dbg ("%s - %02x", __FUNCTION__, new_lsr);
1595
1596         edge_port->shadow_lsr = lsr;
1597
1598         if (new_lsr & LSR_BREAK) {
1599                 /*
1600                  * Parity and Framing errors only count if they
1601                  * occur exclusive of a break being received.
1602                  */
1603                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1604         }
1605
1606         /* Place LSR data byte into Rx buffer */
1607         if (lsr_data && edge_port->port->tty) {
1608                 tty_insert_flip_char(edge_port->port->tty, data, 0);
1609                 tty_flip_buffer_push(edge_port->port->tty);
1610         }
1611
1612         /* update input line counters */
1613         icount = &edge_port->icount;
1614         if (new_lsr & LSR_BREAK)
1615                 icount->brk++;
1616         if (new_lsr & LSR_OVER_ERR)
1617                 icount->overrun++;
1618         if (new_lsr & LSR_PAR_ERR)
1619                 icount->parity++;
1620         if (new_lsr & LSR_FRM_ERR)
1621                 icount->frame++;
1622 }
1623
1624
1625 static void edge_interrupt_callback (struct urb *urb)
1626 {
1627         struct edgeport_serial  *edge_serial = (struct edgeport_serial *)urb->context;
1628         struct usb_serial_port *port;
1629         struct edgeport_port *edge_port;
1630         unsigned char *data = urb->transfer_buffer;
1631         int length = urb->actual_length;
1632         int port_number;
1633         int function;
1634         __u8 lsr;
1635         __u8 msr;
1636
1637         dbg("%s", __FUNCTION__);
1638
1639         if (serial_paranoia_check (edge_serial->serial, __FUNCTION__)) {
1640                 return;
1641         }
1642
1643         if (urb->status) {
1644                 dbg("%s - nonzero control read status received: %d", __FUNCTION__, urb->status);
1645                 return;
1646         }
1647
1648         if (!length) {
1649                 dbg ("%s - no data in urb", __FUNCTION__);
1650                 return;
1651         }
1652
1653         usb_serial_debug_data (__FILE__, __FUNCTION__, length, data);
1654
1655         if (length != 2) {
1656                 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1657                 return;
1658         }
1659
1660         port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1661         function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1662         dbg ("%s - port_number %d, function %d, info 0x%x",
1663              __FUNCTION__, port_number, function, data[1]);
1664         port = &edge_serial->serial->port[port_number];
1665         if (port_paranoia_check (port, __FUNCTION__)) {
1666                 dbg ("%s - change found for port that is not present",
1667                      __FUNCTION__);
1668                 return;
1669         }
1670         edge_port = port->private;
1671         if (!edge_port) {
1672                 dbg ("%s - edge_port not found", __FUNCTION__);
1673                 return;
1674         }
1675         switch (function) {
1676         case TIUMP_INTERRUPT_CODE_LSR:
1677                 lsr = MapLineStatus(data[1]);
1678                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1679                         /* Save the LSR event for bulk read completion routine */
1680                         dbg ("%s - LSR Event Port %u LSR Status = %02x",
1681                              __FUNCTION__, port_number, lsr);
1682                         edge_port->lsr_event = 1;
1683                         edge_port->lsr_mask = lsr;
1684                 } else {
1685                         dbg ("%s - ===== Port %d LSR Status = %02x ======",
1686                              __FUNCTION__, port_number, lsr);
1687                         handle_new_lsr (edge_port, 0, lsr, 0);
1688                 }
1689                 break;
1690
1691         case TIUMP_INTERRUPT_CODE_MSR:  // MSR
1692                 /* Copy MSR from UMP */
1693                 msr = data[1];
1694                 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1695                      __FUNCTION__, port_number, msr);
1696                 handle_new_msr (edge_port, msr);
1697                 break;
1698
1699         default:
1700                 err ("%s - Unknown Interrupt code from UMP %x\n",
1701                      __FUNCTION__, data[1]);
1702                 break;
1703
1704         }
1705 }
1706
1707 static void edge_bulk_in_callback (struct urb *urb)
1708 {
1709         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1710         unsigned char *data = urb->transfer_buffer;
1711         struct tty_struct *tty;
1712         int status;
1713         int i;
1714         int port_number;
1715
1716         dbg("%s", __FUNCTION__);
1717
1718         if (port_paranoia_check (edge_port->port, __FUNCTION__))
1719                 return;
1720
1721         if (urb->status) {
1722                 dbg ("%s - nonzero read bulk status received: %d",
1723                      __FUNCTION__, urb->status);
1724
1725                 if (urb->status == -EPIPE) {
1726                         /* clear any problem that might have happened on this pipe */
1727                         usb_clear_halt (edge_port->port->serial->dev, urb->pipe);
1728                         goto exit;
1729                 }
1730                 return;
1731         }
1732
1733         port_number = edge_port->port->number - edge_port->port->serial->minor;
1734
1735         if (edge_port->lsr_event) {
1736                 edge_port->lsr_event = 0;
1737                 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1738                      __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1739                 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1740                 /* Adjust buffer length/pointer */
1741                 --urb->actual_length;
1742                 ++data;
1743         }
1744
1745         tty = edge_port->port->tty;
1746         if (tty && urb->actual_length) {
1747                 usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
1748
1749                 if (edge_port->close_pending) {
1750                         dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1751                 } else {
1752                         for (i = 0; i < urb->actual_length ; ++i) {
1753                                 /* if we insert more than TTY_FLIPBUF_SIZE characters,
1754                                  * we drop them. */
1755                                 if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
1756                                         tty_flip_buffer_push(tty);
1757                                 }
1758                                 /* this doesn't actually push the data through unless
1759                                  * tty->low_latency is set */
1760                                 tty_insert_flip_char(tty, data[i], 0);
1761                         }
1762                         tty_flip_buffer_push(tty);
1763                 }
1764                 edge_port->icount.rx += urb->actual_length;
1765         }
1766
1767 exit:
1768         /* continue always trying to read */
1769         urb->dev = edge_port->port->serial->dev;
1770         status = usb_submit_urb (urb);
1771         if (status)
1772                 err ("%s - usb_submit_urb failed with result %d",
1773                      __FUNCTION__, status);
1774 }
1775
1776 static void edge_bulk_out_callback (struct urb *urb)
1777 {
1778         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1779         struct usb_serial *serial = get_usb_serial (port, __FUNCTION__);
1780         struct tty_struct *tty;
1781
1782         dbg ("%s - port %d", __FUNCTION__, port->number);
1783
1784         if (!serial) {
1785                 dbg ("%s - bad serial pointer, exiting", __FUNCTION__);
1786                 return;
1787         }
1788
1789         if (urb->status) {
1790                 dbg ("%s - nonzero write bulk status received: %d",
1791                      __FUNCTION__, urb->status);
1792
1793                 if (urb->status == -EPIPE) {
1794                         /* clear any problem that might have happened on this pipe */
1795                         usb_clear_halt (serial->dev, urb->pipe);
1796                 }
1797                 return;
1798         }
1799
1800         tty = port->tty;
1801         if (tty) {
1802                 /* let the tty driver wakeup if it has a special write_wakeup function */
1803                 tty_wakeup(tty);
1804         }
1805 }
1806
1807 static int edge_open (struct usb_serial_port *port, struct file * filp)
1808 {
1809         struct edgeport_port *edge_port = (struct edgeport_port *)port->private;
1810         struct edgeport_serial *edge_serial;
1811         struct usb_device *dev;
1812         struct urb *urb;
1813         int port_number;
1814         int status;
1815         u16 open_settings;
1816         u8 transaction_timeout;
1817
1818         if (port_paranoia_check (port, __FUNCTION__))
1819                 return -ENODEV;
1820
1821         dbg("%s - port %d", __FUNCTION__, port->number);
1822
1823         if (edge_port == NULL)
1824                 return -ENODEV;
1825
1826         /* force low_latency on so that our tty_push actually forces the data through,
1827            otherwise it is scheduled, and with high data rates (like with OHCI) data
1828            can get lost. */
1829         if (port->tty)
1830                 port->tty->low_latency = 1;
1831
1832         port_number = port->number - port->serial->minor;
1833         switch (port_number) {
1834                 case 0:
1835                         edge_port->uart_base = UMPMEM_BASE_UART1;
1836                         edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1837                         break;
1838                 case 1:
1839                         edge_port->uart_base = UMPMEM_BASE_UART2;
1840                         edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1841                         break;
1842                 default:
1843                         err ("Unknown port number!!!");
1844                         return -ENODEV;
1845         }
1846
1847         dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1848              __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1849
1850         dev = port->serial->dev;
1851
1852         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1853         init_waitqueue_head (&edge_port->delta_msr_wait);
1854
1855         /* turn off loopback */
1856         status = TIClearLoopBack (edge_port);
1857         if (status)
1858                 return status;
1859
1860         /* set up the port settings */
1861         edge_set_termios (port, NULL);
1862
1863         /* open up the port */
1864
1865         /* milliseconds to timeout for DMA transfer */
1866         transaction_timeout = 2;
1867
1868         edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1869
1870         // milliseconds to timeout for DMA transfer
1871         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1872                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1873                              (transaction_timeout << 2));
1874
1875         dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1876
1877         /* Tell TI to open and start the port */
1878         status = TIWriteCommandSync (dev,
1879                                         UMPC_OPEN_PORT,
1880                                         (u8)(UMPM_UART1_PORT + port_number),
1881                                         open_settings,
1882                                         NULL,
1883                                         0);
1884         if (status)
1885                 return status;
1886
1887         /* Start the DMA? */
1888         status = TIWriteCommandSync (dev,
1889                                         UMPC_START_PORT,
1890                                         (u8)(UMPM_UART1_PORT + port_number),
1891                                         0,
1892                                         NULL,
1893                                         0);
1894         if (status)
1895                 return status;
1896
1897         /* Clear TX and RX buffers in UMP */
1898         status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1899         if (status)
1900                 return status;
1901
1902         /* Read Initial MSR */
1903         status = TIReadVendorRequestSync (dev,
1904                                         UMPC_READ_MSR,  // Request
1905                                         0,              // wValue
1906                                         (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
1907                                         &edge_port->shadow_msr,                 // TransferBuffer
1908                                         1);                                     // TransferBufferLength
1909         if (status)
1910                 return status;
1911
1912         dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
1913
1914         edge_serial = edge_port->edge_serial;
1915         if (edge_serial->num_ports_open == 0) {
1916                 dbg ("%s - setting up bulk in urb", __FUNCTION__);
1917                 /* we are the first port to be opened, let's post the interrupt urb */
1918                 urb = edge_serial->serial->port[0].interrupt_in_urb;
1919                 if (!urb) {
1920                         err ("%s - no interrupt urb present, exiting", __FUNCTION__);
1921                         return -EINVAL;
1922                 }
1923                 urb->complete = edge_interrupt_callback;
1924                 urb->context = edge_serial;
1925                 urb->dev = dev;
1926                 status = usb_submit_urb (urb);
1927                 if (status) {
1928                         err ("%s - usb_submit_urb failed with value %d", __FUNCTION__, status);
1929                         return status;
1930                 }
1931         }
1932
1933         /*
1934          * reset the data toggle on the bulk endpoints to work around bug in
1935          * host controllers where things get out of sync some times
1936          */
1937         usb_clear_halt (dev, port->write_urb->pipe);
1938         usb_clear_halt (dev, port->read_urb->pipe);
1939
1940         /* start up our bulk read urb */
1941         urb = port->read_urb;
1942         if (!urb) {
1943                 err ("%s - no read urb present, exiting", __FUNCTION__);
1944                 return -EINVAL;
1945         }
1946         urb->complete = edge_bulk_in_callback;
1947         urb->context = edge_port;
1948         urb->dev = dev;
1949         status = usb_submit_urb (urb);
1950         if (status) {
1951                 err ("%s - read bulk usb_submit_urb failed with value %d", __FUNCTION__, status);
1952                 return status;
1953         }
1954
1955         ++edge_serial->num_ports_open;
1956
1957         dbg("%s - exited", __FUNCTION__);
1958
1959         return 0;
1960 }
1961
1962 static void edge_close (struct usb_serial_port *port, struct file * filp)
1963 {
1964         struct usb_serial *serial;
1965         struct edgeport_serial *edge_serial;
1966         struct edgeport_port *edge_port;
1967         int port_number;
1968         int status;
1969
1970         if (port_paranoia_check (port, __FUNCTION__))
1971                 return;
1972
1973         dbg("%s - port %d", __FUNCTION__, port->number);
1974
1975         serial = get_usb_serial (port, __FUNCTION__);
1976         if (!serial)
1977                 return;
1978
1979         edge_serial = (struct edgeport_serial *)serial->private;
1980         edge_port = (struct edgeport_port *)port->private;
1981         if ((edge_serial == NULL) || (edge_port == NULL))
1982                 return;
1983
1984         if (serial->dev) {
1985                 /* The bulkreadcompletion routine will check
1986                  * this flag and dump add read data */
1987                 edge_port->close_pending = 1;
1988
1989                 /* chase the port close */
1990                 TIChasePort (edge_port);
1991
1992                 usb_unlink_urb (port->read_urb);
1993
1994                 /* assuming we can still talk to the device,
1995                  * send a close port command to it */
1996                 dbg("%s - send umpc_close_port", __FUNCTION__);
1997                 port_number = port->number - port->serial->minor;
1998                 status = TIWriteCommandSync (port->serial->dev,
1999                                              UMPC_CLOSE_PORT,
2000                                              (__u8)(UMPM_UART1_PORT + port_number),
2001                                              0,
2002                                              NULL,
2003                                              0);
2004                 --edge_port->edge_serial->num_ports_open;
2005                 if (edge_port->edge_serial->num_ports_open <= 0) {
2006                         /* last port is now closed, let's shut down our interrupt urb */
2007                         usb_unlink_urb (serial->port[0].interrupt_in_urb);
2008                         edge_port->edge_serial->num_ports_open = 0;
2009                 }
2010         edge_port->close_pending = 0;
2011         }
2012
2013         dbg("%s - exited", __FUNCTION__);
2014 }
2015
2016 static int edge_write (struct usb_serial_port *port, int from_user, const unsigned char *data, int count)
2017 {
2018         struct usb_serial *serial = port->serial;
2019         struct edgeport_port *edge_port = port->private;
2020         int result;
2021
2022         dbg("%s - port %d", __FUNCTION__, port->number);
2023
2024         if (count == 0) {
2025                 dbg("%s - write request of 0 bytes", __FUNCTION__);
2026                 return 0;
2027         }
2028
2029         if (edge_port == NULL)
2030                 return -ENODEV;
2031         if (edge_port->close_pending == 1)
2032                 return -ENODEV;
2033
2034         if (port->write_urb->status == -EINPROGRESS) {
2035                 dbg ("%s - already writing", __FUNCTION__);
2036                 return 0;
2037         }
2038
2039         count = min (count, port->bulk_out_size);
2040
2041         if (from_user) {
2042                 if (copy_from_user(port->write_urb->transfer_buffer, data, count))
2043                         return -EFAULT;
2044         } else {
2045                 memcpy (port->write_urb->transfer_buffer, data, count);
2046         }
2047
2048         usb_serial_debug_data (__FILE__, __FUNCTION__, count, port->write_urb->transfer_buffer);
2049
2050         /* set up our urb */
2051         usb_fill_bulk_urb (port->write_urb, serial->dev,
2052                            usb_sndbulkpipe (serial->dev,
2053                                             port->bulk_out_endpointAddress),
2054                            port->write_urb->transfer_buffer, count,
2055                            edge_bulk_out_callback,
2056                            port);
2057
2058         /* send the data out the bulk port */
2059         result = usb_submit_urb(port->write_urb);
2060         if (result)
2061                 err("%s - failed submitting write urb, error %d", __FUNCTION__, result);
2062         else
2063                 result = count;
2064
2065         if (result > 0)
2066                 edge_port->icount.tx += count;
2067
2068         return result;
2069 }
2070
2071 static int edge_write_room (struct usb_serial_port *port)
2072 {
2073         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2074         int room = 0;
2075
2076         dbg("%s", __FUNCTION__);
2077
2078         if (edge_port == NULL)
2079                 return -ENODEV;
2080         if (edge_port->close_pending == 1)
2081                 return -ENODEV;
2082
2083         dbg("%s - port %d", __FUNCTION__, port->number);
2084
2085         if (port->write_urb->status != -EINPROGRESS)
2086                 room = port->bulk_out_size;
2087
2088         dbg("%s - returns %d", __FUNCTION__, room);
2089         return room;
2090 }
2091
2092 static int edge_chars_in_buffer (struct usb_serial_port *port)
2093 {
2094         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2095         int chars = 0;
2096
2097         dbg("%s", __FUNCTION__);
2098
2099         if (edge_port == NULL)
2100                 return -ENODEV;
2101         if (edge_port->close_pending == 1)
2102                 return -ENODEV;
2103
2104         dbg("%s - port %d", __FUNCTION__, port->number);
2105
2106         if (port->write_urb->status == -EINPROGRESS)
2107                 chars = port->write_urb->transfer_buffer_length;
2108
2109         dbg ("%s - returns %d", __FUNCTION__, chars);
2110         return chars;
2111 }
2112
2113 static void edge_throttle (struct usb_serial_port *port)
2114 {
2115         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2116         struct tty_struct *tty;
2117         int status;
2118
2119         dbg("%s - port %d", __FUNCTION__, port->number);
2120
2121         if (edge_port == NULL)
2122                 return;
2123
2124         tty = port->tty;
2125         if (!tty) {
2126                 dbg ("%s - no tty available", __FUNCTION__);
2127                 return;
2128         }
2129         /* if we are implementing XON/XOFF, send the stop character */
2130         if (I_IXOFF(tty)) {
2131                 unsigned char stop_char = STOP_CHAR(tty);
2132                 status = edge_write (port, 0, &stop_char, 1);
2133                 if (status <= 0) {
2134                         return;
2135                 }
2136         }
2137
2138         /* if we are implementing RTS/CTS, toggle that line */
2139         if (tty->termios->c_cflag & CRTSCTS) {
2140                 status = TIClearRts (edge_port);
2141         }
2142
2143         usb_unlink_urb (port->read_urb);
2144 }
2145
2146 static void edge_unthrottle (struct usb_serial_port *port)
2147 {
2148         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2149         struct tty_struct *tty;
2150         int status;
2151
2152         dbg("%s - port %d", __FUNCTION__, port->number);
2153
2154         if (edge_port == NULL)
2155                 return;
2156
2157         tty = port->tty;
2158         if (!tty) {
2159                 dbg ("%s - no tty available", __FUNCTION__);
2160                 return;
2161         }
2162
2163         /* if we are implementing XON/XOFF, send the start character */
2164         if (I_IXOFF(tty)) {
2165                 unsigned char start_char = START_CHAR(tty);
2166                 status = edge_write (port, 0, &start_char, 1);
2167                 if (status <= 0) {
2168                         return;
2169                 }
2170         }
2171
2172         /* if we are implementing RTS/CTS, toggle that line */
2173         if (tty->termios->c_cflag & CRTSCTS) {
2174                 status = TISetRts (edge_port);
2175         }
2176
2177         port->read_urb->dev = port->serial->dev;
2178         status = usb_submit_urb (port->read_urb);
2179         if (status) {
2180                 err ("%s - usb_submit_urb failed with value %d", __FUNCTION__, status);
2181         }
2182 }
2183
2184
2185 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2186 {
2187         struct ump_uart_config *config;
2188         struct tty_struct *tty;
2189         int baud;
2190         int round;
2191         unsigned cflag;
2192         int status;
2193         int port_number = edge_port->port->number - edge_port->port->serial->minor;
2194
2195         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2196
2197         tty = edge_port->port->tty;
2198         if ((!tty) ||
2199             (!tty->termios)) {
2200                 dbg("%s - no tty structures", __FUNCTION__);
2201                 return;
2202         }
2203
2204         config = kmalloc (sizeof (*config), GFP_KERNEL);
2205         if (!config) {
2206                 err ("%s - out of memory", __FUNCTION__);
2207                 return;
2208         }
2209
2210         cflag = tty->termios->c_cflag;
2211
2212         config->wFlags = 0;
2213
2214         /* These flags must be set */
2215         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2216         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2217         config->bUartMode = 0;
2218
2219         switch (cflag & CSIZE) {
2220                 case CS5:
2221                             config->bDataBits = UMP_UART_CHAR5BITS;
2222                             dbg ("%s - data bits = 5", __FUNCTION__);
2223                             break;
2224                 case CS6:
2225                             config->bDataBits = UMP_UART_CHAR6BITS;
2226                             dbg ("%s - data bits = 6", __FUNCTION__);
2227                             break;
2228                 case CS7:
2229                             config->bDataBits = UMP_UART_CHAR7BITS;
2230                             dbg ("%s - data bits = 7", __FUNCTION__);
2231                             break;
2232                 default:
2233                 case CS8:
2234                             config->bDataBits = UMP_UART_CHAR8BITS;
2235                             dbg ("%s - data bits = 8", __FUNCTION__);
2236                             break;
2237         }
2238
2239         if (cflag & PARENB) {
2240                 if (cflag & PARODD) {
2241                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2242                         config->bParity = UMP_UART_ODDPARITY;
2243                         dbg("%s - parity = odd", __FUNCTION__);
2244                 } else {
2245                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2246                         config->bParity = UMP_UART_EVENPARITY;
2247                         dbg("%s - parity = even", __FUNCTION__);
2248                 }
2249         } else {
2250                 config->bParity = UMP_UART_NOPARITY;
2251                 dbg("%s - parity = none", __FUNCTION__);
2252         }
2253
2254         if (cflag & CSTOPB) {
2255                 config->bStopBits = UMP_UART_STOPBIT2;
2256                 dbg("%s - stop bits = 2", __FUNCTION__);
2257         } else {
2258                 config->bStopBits = UMP_UART_STOPBIT1;
2259                 dbg("%s - stop bits = 1", __FUNCTION__);
2260         }
2261
2262         /* figure out the flow control settings */
2263         if (cflag & CRTSCTS) {
2264                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2265                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2266                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2267         } else {
2268                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2269         }
2270
2271         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2272         if (I_IXOFF(tty) || I_IXON(tty)) {
2273                 config->cXon  = START_CHAR(tty);
2274                 config->cXoff = STOP_CHAR(tty);
2275
2276                 /* if we are implementing INBOUND XON/XOFF */
2277                 if (I_IXOFF(tty)) {
2278                         config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2279                         dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2280                              __FUNCTION__, config->cXon, config->cXoff);
2281                 } else {
2282                         dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2283                 }
2284
2285                 /* if we are implementing OUTBOUND XON/XOFF */
2286                 if (I_IXON(tty)) {
2287                         config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2288                         dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2289                              __FUNCTION__, config->cXon, config->cXoff);
2290                 } else {
2291                         dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2292                 }
2293         }
2294
2295         /* Round the baud rate */
2296         baud = tty_get_baud_rate(tty);
2297         if (!baud) {
2298                 /* pick a default, any default... */
2299                 baud = 9600;
2300         }
2301         config->wBaudRate = (__u16)(461550L / baud);
2302         round = 4615500L / baud;
2303         if ((round - (config->wBaudRate * 10)) >= 5)
2304                 config->wBaudRate++;
2305
2306         dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2307
2308         dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2309         dbg ("wFlags:    0x%x", config->wFlags);
2310         dbg ("bDataBits:   %d", config->bDataBits);
2311         dbg ("bParity:     %d", config->bParity);
2312         dbg ("bStopBits:   %d", config->bStopBits);
2313         dbg ("cXon:        %d", config->cXon);
2314         dbg ("cXoff:       %d", config->cXoff);
2315         dbg ("bUartMode:   %d", config->bUartMode);
2316
2317         /* move the word values into big endian mode */
2318         cpu_to_be16s (&config->wFlags);
2319         cpu_to_be16s (&config->wBaudRate);
2320
2321         status = TIWriteCommandSync (edge_port->port->serial->dev,
2322                                 UMPC_SET_CONFIG,
2323                                 (__u8)(UMPM_UART1_PORT + port_number),
2324                                 0,
2325                                 (__u8 *)config,
2326                                 sizeof(*config));
2327         if (status) {
2328                 dbg ("%s - error %d when trying to write config to device",
2329                      __FUNCTION__, status);
2330         }
2331
2332         kfree (config);
2333
2334         return;
2335 }
2336
2337 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
2338 {
2339         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2340         struct tty_struct *tty = port->tty;
2341         unsigned int cflag;
2342
2343         if (!port->tty || !port->tty->termios) {
2344                 dbg ("%s - no tty or termios", __FUNCTION__);
2345                 return;
2346         }
2347
2348         cflag = tty->termios->c_cflag;
2349         /* check that they really want us to change something */
2350         if (old_termios) {
2351                 if ((cflag == old_termios->c_cflag) &&
2352                     (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag))) {
2353                         dbg ("%s - nothing to change", __FUNCTION__);
2354                         return;
2355                 }
2356         }
2357
2358         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2359             tty->termios->c_cflag,
2360             RELEVANT_IFLAG(tty->termios->c_iflag));
2361         if (old_termios) {
2362                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2363                     old_termios->c_cflag,
2364                     RELEVANT_IFLAG(old_termios->c_iflag));
2365         }
2366
2367         dbg("%s - port %d", __FUNCTION__, port->number);
2368
2369         if (edge_port == NULL)
2370                 return;
2371
2372         /* change the port settings to the new ones specified */
2373         change_port_settings (edge_port, old_termios);
2374
2375         return;
2376 }
2377
2378 static int set_modem_info (struct edgeport_port *edge_port, unsigned int cmd, unsigned int *value)
2379 {
2380         unsigned int mcr = edge_port->shadow_mcr;
2381         unsigned int arg;
2382
2383         if (copy_from_user(&arg, value, sizeof(int)))
2384                 return -EFAULT;
2385
2386         switch (cmd) {
2387                 case TIOCMBIS:
2388                         if (arg & TIOCM_RTS)
2389                                 mcr |= MCR_RTS;
2390                         if (arg & TIOCM_DTR)
2391                                 mcr |= MCR_RTS;
2392                         if (arg & TIOCM_LOOP)
2393                                 mcr |= MCR_LOOPBACK;
2394                         break;
2395
2396                 case TIOCMBIC:
2397                         if (arg & TIOCM_RTS)
2398                                 mcr &= ~MCR_RTS;
2399                         if (arg & TIOCM_DTR)
2400                                 mcr &= ~MCR_RTS;
2401                         if (arg & TIOCM_LOOP)
2402                                 mcr &= ~MCR_LOOPBACK;
2403                         break;
2404
2405                 case TIOCMSET:
2406                         /* turn off the RTS and DTR and LOOPBACK
2407                          * and then only turn on what was asked to */
2408                         mcr &=  ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK);
2409                         mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0);
2410                         mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0);
2411                         mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0);
2412                         break;
2413         }
2414
2415         edge_port->shadow_mcr = mcr;
2416
2417         TIRestoreMCR (edge_port, mcr);
2418
2419         return 0;
2420 }
2421
2422 static int get_modem_info (struct edgeport_port *edge_port, unsigned int *value)
2423 {
2424         unsigned int result = 0;
2425         unsigned int msr = edge_port->shadow_msr;
2426         unsigned int mcr = edge_port->shadow_mcr;
2427
2428         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2429                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2430                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2431                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2432                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2433                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2434
2435
2436         dbg("%s -- %x", __FUNCTION__, result);
2437
2438         if (copy_to_user(value, &result, sizeof(int)))
2439                 return -EFAULT;
2440         return 0;
2441 }
2442
2443 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct * retinfo)
2444 {
2445         struct serial_struct tmp;
2446
2447         if (!retinfo)
2448                 return -EFAULT;
2449
2450         memset(&tmp, 0, sizeof(tmp));
2451
2452         tmp.type                = PORT_16550A;
2453         tmp.line                = edge_port->port->serial->minor;
2454         tmp.port                = edge_port->port->number;
2455         tmp.irq                 = 0;
2456         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2457         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2458         tmp.baud_base           = 9600;
2459         tmp.close_delay         = 5*HZ;
2460         tmp.closing_wait        = 30*HZ;
2461 //      tmp.custom_divisor      = state->custom_divisor;
2462 //      tmp.hub6                = state->hub6;
2463 //      tmp.io_type             = state->io_type;
2464
2465
2466         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2467                 return -EFAULT;
2468         return 0;
2469 }
2470
2471 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2472 {
2473         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2474         struct async_icount cnow;
2475         struct async_icount cprev;
2476
2477         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2478
2479         switch (cmd) {
2480                 case TIOCINQ:
2481                         dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2482 //                      return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2483                         break;
2484
2485                 case TIOCSERGETLSR:
2486                         dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2487 //                      return get_lsr_info(edge_port, (unsigned int *) arg);
2488                         break;
2489
2490                 case TIOCMBIS:
2491                 case TIOCMBIC:
2492                 case TIOCMSET:
2493                         dbg("%s - (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
2494                         return set_modem_info(edge_port, cmd, (unsigned int *) arg);
2495                         break;
2496
2497                 case TIOCMGET:
2498                         dbg("%s - (%d) TIOCMGET", __FUNCTION__, port->number);
2499                         return get_modem_info(edge_port, (unsigned int *) arg);
2500                         break;
2501
2502                 case TIOCGSERIAL:
2503                         dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2504                         return get_serial_info(edge_port, (struct serial_struct *) arg);
2505                         break;
2506
2507                 case TIOCSSERIAL:
2508                         dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2509                         break;
2510
2511                 case TIOCMIWAIT:
2512                         dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2513                         cprev = edge_port->icount;
2514                         while (1) {
2515                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
2516                                 /* see if a signal did it */
2517                                 if (signal_pending(current))
2518                                         return -ERESTARTSYS;
2519                                 cnow = edge_port->icount;
2520                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2521                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2522                                         return -EIO; /* no change => error */
2523                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2524                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2525                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2526                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2527                                         return 0;
2528                                 }
2529                                 cprev = cnow;
2530                         }
2531                         /* not reached */
2532                         break;
2533
2534                 case TIOCGICOUNT:
2535                         dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2536                              port->number, edge_port->icount.rx, edge_port->icount.tx);
2537                         if (copy_to_user((void *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2538                                 return -EFAULT;
2539                         return 0;
2540         }
2541
2542         return -ENOIOCTLCMD;
2543 }
2544
2545 static void edge_break (struct usb_serial_port *port, int break_state)
2546 {
2547         struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);
2548         int status;
2549
2550         dbg ("%s - state = %d", __FUNCTION__, break_state);
2551
2552         /* chase the port close */
2553         TIChasePort (edge_port);
2554
2555         if (break_state == -1) {
2556                 status = TISetBreak (edge_port);
2557         } else {
2558                 status = TIClearBreak (edge_port);
2559         }
2560         if (status) {
2561                 dbg ("%s - error %d sending break set/clear command.",
2562                      __FUNCTION__, status);
2563         }
2564 }
2565
2566 static int edge_startup (struct usb_serial *serial)
2567 {
2568         struct edgeport_serial *edge_serial;
2569         struct edgeport_port *edge_port;
2570         struct usb_device *dev;
2571         int status;
2572         int i;
2573
2574         dev = serial->dev;
2575
2576         /* create our private serial structure */
2577         edge_serial = kmalloc (sizeof(struct edgeport_serial), GFP_KERNEL);
2578         if (edge_serial == NULL) {
2579                 err("%s - Out of memory", __FUNCTION__);
2580                 return -ENOMEM;
2581         }
2582         memset (edge_serial, 0, sizeof(struct edgeport_serial));
2583         edge_serial->serial = serial;
2584         serial->private = edge_serial;
2585
2586         status = TIDownloadFirmware (edge_serial);
2587         if (status) {
2588                 kfree (edge_serial);
2589                 return status;
2590         }
2591
2592         /* set up our port private structures */
2593         for (i = 0; i < serial->num_ports; ++i) {
2594                 edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);
2595                 if (edge_port == NULL) {
2596                         err("%s - Out of memory", __FUNCTION__);
2597                         return -ENOMEM;
2598                 }
2599                 memset (edge_port, 0, sizeof(struct edgeport_port));
2600                 edge_port->port = &serial->port[i];
2601                 edge_port->edge_serial = edge_serial;
2602                 serial->port[i].private = edge_port;
2603         }
2604
2605         return 0;
2606 }
2607
2608 static void edge_shutdown (struct usb_serial *serial)
2609 {
2610         int i;
2611
2612         dbg ("%s", __FUNCTION__);
2613
2614         for (i=0; i < serial->num_ports; ++i) {
2615                 kfree (serial->port[i].private);
2616                 serial->port[i].private = NULL;
2617         }
2618         kfree (serial->private);
2619         serial->private = NULL;
2620 }
2621
2622
2623 static struct usb_serial_device_type edgeport_1port_device = {
2624         owner:                  THIS_MODULE,
2625         name:                   "Edgeport TI 1 port adapter",
2626         id_table:               edgeport_1port_id_table,
2627         num_interrupt_in:       1,
2628         num_bulk_in:            1,
2629         num_bulk_out:           1,
2630         num_ports:              1,
2631         open:                   edge_open,
2632         close:                  edge_close,
2633         throttle:               edge_throttle,
2634         unthrottle:             edge_unthrottle,
2635         startup:                edge_startup,
2636         shutdown:               edge_shutdown,
2637         ioctl:                  edge_ioctl,
2638         set_termios:            edge_set_termios,
2639         write:                  edge_write,
2640         write_room:             edge_write_room,
2641         chars_in_buffer:        edge_chars_in_buffer,
2642         break_ctl:              edge_break,
2643 };
2644
2645 static struct usb_serial_device_type edgeport_2port_device = {
2646         owner:                  THIS_MODULE,
2647         name:                   "Edgeport TI 2 port adapter",
2648         id_table:               edgeport_2port_id_table,
2649         num_interrupt_in:       1,
2650         num_bulk_in:            2,
2651         num_bulk_out:           2,
2652         num_ports:              2,
2653         open:                   edge_open,
2654         close:                  edge_close,
2655         throttle:               edge_throttle,
2656         unthrottle:             edge_unthrottle,
2657         startup:                edge_startup,
2658         shutdown:               edge_shutdown,
2659         ioctl:                  edge_ioctl,
2660         set_termios:            edge_set_termios,
2661         write:                  edge_write,
2662         write_room:             edge_write_room,
2663         chars_in_buffer:        edge_chars_in_buffer,
2664         break_ctl:              edge_break,
2665 };
2666
2667
2668 static int __init edgeport_init(void)
2669 {
2670         usb_serial_register (&edgeport_1port_device);
2671         usb_serial_register (&edgeport_2port_device);
2672         info(DRIVER_DESC " " DRIVER_VERSION);
2673         return 0;
2674 }
2675
2676 static void __exit edgeport_exit (void)
2677 {
2678         usb_serial_deregister (&edgeport_1port_device);
2679         usb_serial_deregister (&edgeport_2port_device);
2680 }
2681
2682 module_init(edgeport_init);
2683 module_exit(edgeport_exit);
2684
2685 /* Module information */
2686 MODULE_AUTHOR(DRIVER_AUTHOR);
2687 MODULE_DESCRIPTION(DRIVER_DESC);
2688 MODULE_LICENSE("GPL");
2689
2690 MODULE_PARM(debug, "i");
2691 MODULE_PARM_DESC(debug, "Debug enabled or not");
2692
2693 MODULE_PARM(ignore_cpu_rev, "i");
2694 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
2695