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 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
  14  *
  15  * For questions or problems with this driver, contact Inside Out
  16  * Networks technical support, or Peter Berger <pberger@brimson.com>,
  17  * or Al Borchers <alborchers@steinerpoint.com>.
  18  *
  19  * Version history:
  20  *
  21  *      July 11, 2002   Removed 4 port device structure since all TI UMP
  22  *                      chips have only 2 ports
  23  *                      David Iacovelli (davidi@ionetworks.com)
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/jiffies.h>
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/slab.h>
  32 #include <linux/tty.h>
  33 #include <linux/tty_driver.h>
  34 #include <linux/tty_flip.h>
  35 #include <linux/module.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/serial.h>
  38 #include <linux/ioctl.h>
  39 #include <asm/uaccess.h>
  40 #include <asm/semaphore.h>
  41 #include <linux/usb.h>
  42 #include <linux/usb/serial.h>
  43
  44 #include "io_16654.h"
  45 #include "io_usbvend.h"
  46 #include "io_ti.h"
  47
  48 /*
  49  * Version Information
  50  */
  51 #define DRIVER_VERSION "v0.7"
  52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  53 #define DRIVER_DESC "Edgeport USB Serial Driver"
  54
  55
  56 /* firmware image code */
  57 #define IMAGE_VERSION_NAME      PagableOperationalCodeImageVersion
  58 #define IMAGE_ARRAY_NAME        PagableOperationalCodeImage
  59 #define IMAGE_SIZE              PagableOperationalCodeSize
  60 #include "io_fw_down3.h"        /* Define array OperationalCodeImage[] */
  61
  62 #define EPROM_PAGE_SIZE         64
  63
  64
  65 struct edgeport_uart_buf_desc {
  66         __u32 count;            // Number of bytes currently in buffer
  67 };
  68
  69 /* different hardware types */
  70 #define HARDWARE_TYPE_930       0
  71 #define HARDWARE_TYPE_TIUMP     1
  72
  73 // IOCTL_PRIVATE_TI_GET_MODE Definitions
  74 #define TI_MODE_CONFIGURING     0   // Device has not entered start device
  75 #define TI_MODE_BOOT            1   // Staying in boot mode
  76 #define TI_MODE_DOWNLOAD        2   // Made it to download mode
  77 #define TI_MODE_TRANSITIONING   3   // Currently in boot mode but transitioning to download mode
  78
  79 /* read urb state */
  80 #define EDGE_READ_URB_RUNNING   0
  81 #define EDGE_READ_URB_STOPPING  1
  82 #define EDGE_READ_URB_STOPPED   2
  83
  84 #define EDGE_LOW_LATENCY        1
  85 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
  86
  87 #define EDGE_OUT_BUF_SIZE       1024
  88
  89
  90 /* Product information read from the Edgeport */
  91 struct product_info
  92 {
  93         int     TiMode;                 // Current TI Mode
  94         __u8    hardware_type;          // Type of hardware
  95 } __attribute__((packed));
  96
  97 /* circular buffer */
  98 struct edge_buf {
  99         unsigned int    buf_size;
 100         char            *buf_buf;
 101         char            *buf_get;
 102         char            *buf_put;
 103 };
 104
 105 struct edgeport_port {
 106         __u16 uart_base;
 107         __u16 dma_address;
 108         __u8 shadow_msr;
 109         __u8 shadow_mcr;
 110         __u8 shadow_lsr;
 111         __u8 lsr_mask;
 112         __u32 ump_read_timeout;         /* Number of miliseconds the UMP will
 113                                            wait without data before completing
 114                                            a read short */
 115         int baud_rate;
 116         int close_pending;
 117         int lsr_event;
 118         struct edgeport_uart_buf_desc tx;
 119         struct async_icount     icount;
 120         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
 121                                                    waiting for msr change to
 122                                                    happen */
 123         struct edgeport_serial  *edge_serial;
 124         struct usb_serial_port  *port;
 125         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
 126         spinlock_t ep_lock;
 127         int ep_read_urb_state;
 128         int ep_write_urb_in_use;
 129         struct edge_buf *ep_out_buf;
 130 };
 131
 132 struct edgeport_serial {
 133         struct product_info product_info;
 134         u8 TI_I2C_Type;                 // Type of I2C in UMP
 135         u8 TiReadI2C;                   // Set to TRUE if we have read the I2c in Boot Mode
 136         struct semaphore es_sem;
 137         int num_ports_open;
 138         struct usb_serial *serial;
 139 };
 140
 141
 142 /* Devices that this driver supports */
 143 static struct usb_device_id edgeport_1port_id_table [] = {
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 151         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 157         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 160         { }
 161 };
 162
 163 static struct usb_device_id edgeport_2port_id_table [] = {
 164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 170         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 176 // The 4-port shows up as two 2-port devices
 177         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 178         { }
 179 };
 180
 181 /* Devices that this driver supports */
 182 static struct usb_device_id id_table_combined [] = {
 183         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 184         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 185         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 186         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 187         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 188         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 189         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 190         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 191         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 192         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 193         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 194         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 195         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 196         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 197         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 198         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 199         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 200         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 201         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 202         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 203         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 204         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 205         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 206         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 207         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 208         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 209         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 210         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 211         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 212         { }
 213 };
 214
 215 MODULE_DEVICE_TABLE (usb, id_table_combined);
 216
 217 static struct usb_driver io_driver = {
 218         .name =         "io_ti",
 219         .probe =        usb_serial_probe,
 220         .disconnect =   usb_serial_disconnect,
 221         .id_table =     id_table_combined,
 222         .no_dynamic_id =        1,
 223 };
 224
 225
 226 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
 227
 228 static int debug;
 229
 230 static int TIStayInBootMode = 0;
 231 static int low_latency = EDGE_LOW_LATENCY;
 232 static int closing_wait = EDGE_CLOSING_WAIT;
 233 static int ignore_cpu_rev = 0;
 234
 235
 236 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
 237
 238 static void stop_read(struct edgeport_port *edge_port);
 239 static int restart_read(struct edgeport_port *edge_port);
 240
 241 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios);
 242 static void edge_send(struct usb_serial_port *port);
 243
 244 /* circular buffer */
 245 static struct edge_buf *edge_buf_alloc(unsigned int size);
 246 static void edge_buf_free(struct edge_buf *eb);
 247 static void edge_buf_clear(struct edge_buf *eb);
 248 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
 249 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
 250 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
 251         unsigned int count);
 252 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
 253         unsigned int count);
 254
 255
 256 static int TIReadVendorRequestSync (struct usb_device *dev,
 257                                 __u8            request,
 258                                 __u16           value,
 259                                 __u16           index,
 260                                 u8              *data,
 261                                 int             size)
 262 {
 263         int status;
 264
 265         status = usb_control_msg (dev,
 266                                 usb_rcvctrlpipe(dev, 0),
 267                                 request,
 268                                 (USB_TYPE_VENDOR |
 269                                  USB_RECIP_DEVICE |
 270                                  USB_DIR_IN),
 271                                 value,
 272                                 index,
 273                                 data,
 274                                 size,
 275                                 1000);
 276         if (status < 0)
 277                 return status;
 278         if (status != size) {
 279                 dbg ("%s - wanted to write %d, but only wrote %d",
 280                      __FUNCTION__, size, status);
 281                 return -ECOMM;
 282         }
 283         return 0;
 284 }
 285
 286 static int TISendVendorRequestSync (struct usb_device *dev,
 287                                 __u8            request,
 288                                 __u16           value,
 289                                 __u16           index,
 290                                 u8              *data,
 291                                 int             size)
 292 {
 293         int status;
 294
 295         status = usb_control_msg (dev,
 296                                 usb_sndctrlpipe(dev, 0),
 297                                 request,
 298                                 (USB_TYPE_VENDOR |
 299                                  USB_RECIP_DEVICE |
 300                                  USB_DIR_OUT),
 301                                 value,
 302                                 index,
 303                                 data,
 304                                 size,
 305                                 1000);
 306         if (status < 0)
 307                 return status;
 308         if (status != size) {
 309                 dbg ("%s - wanted to write %d, but only wrote %d",
 310                      __FUNCTION__, size, status);
 311                 return -ECOMM;
 312         }
 313         return 0;
 314 }
 315
 316 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
 317                                 __u8 moduleid, __u16 value, u8 *data,
 318                                 int size)
 319 {
 320         return TISendVendorRequestSync (dev,
 321                                           command,                      // Request
 322                                           value,                        // wValue
 323                                           moduleid,                     // wIndex
 324                                           data,                         // TransferBuffer
 325                                           size);                        // TransferBufferLength
 326
 327 }
 328
 329 /* clear tx/rx buffers and fifo in TI UMP */
 330 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
 331 {
 332         int port_number = port->number - port->serial->minor;
 333
 334         dbg ("%s - port %d, mask %x", __FUNCTION__, port_number, mask);
 335
 336         return TIWriteCommandSync (port->serial->dev,
 337                                         UMPC_PURGE_PORT,
 338                                         (__u8)(UMPM_UART1_PORT + port_number),
 339                                         mask,
 340                                         NULL,
 341                                         0);
 342 }
 343
 344 /**
 345  * TIReadDownloadMemory - Read edgeport memory from TI chip
 346  * @dev: usb device pointer
 347  * @start_address: Device CPU address at which to read
 348  * @length: Length of above data
 349  * @address_type: Can read both XDATA and I2C
 350  * @buffer: pointer to input data buffer
 351  */
 352 static int TIReadDownloadMemory(struct usb_device *dev, int start_address,
 353                                 int length, __u8 address_type, __u8 *buffer)
 354 {
 355         int status = 0;
 356         __u8 read_length;
 357         __be16 be_start_address;
 358
 359         dbg ("%s - @ %x for %d", __FUNCTION__, start_address, length);
 360
 361         /* Read in blocks of 64 bytes
 362          * (TI firmware can't handle more than 64 byte reads)
 363          */
 364         while (length) {
 365                 if (length > 64)
 366                         read_length= 64;
 367                 else
 368                         read_length = (__u8)length;
 369
 370                 if (read_length > 1) {
 371                         dbg ("%s - @ %x for %d", __FUNCTION__,
 372                              start_address, read_length);
 373                 }
 374                 be_start_address = cpu_to_be16 (start_address);
 375                 status = TIReadVendorRequestSync (dev,
 376                                                   UMPC_MEMORY_READ,     // Request
 377                                                   (__u16)address_type,  // wValue (Address type)
 378                                                   (__force __u16)be_start_address,      // wIndex (Address to read)
 379                                                   buffer,               // TransferBuffer
 380                                                   read_length); // TransferBufferLength
 381
 382                 if (status) {
 383                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 384                         return status;
 385                 }
 386
 387                 if (read_length > 1) {
 388                         usb_serial_debug_data(debug, &dev->dev, __FUNCTION__,
 389                                               read_length, buffer);
 390                 }
 391
 392                 /* Update pointers/length */
 393                 start_address += read_length;
 394                 buffer += read_length;
 395                 length -= read_length;
 396         }
 397
 398         return status;
 399 }
 400
 401 static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
 402 {
 403         return TIReadDownloadMemory (dev,
 404                                      start_address,
 405                                      length,
 406                                      DTK_ADDR_SPACE_XDATA,
 407                                      buffer);
 408 }
 409
 410 /* Read edgeport memory to a given block */
 411 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
 412 {
 413         int status = 0;
 414         int i;
 415
 416         for (i=0; i< length; i++) {
 417                 status = TIReadVendorRequestSync (serial->serial->dev,
 418                                         UMPC_MEMORY_READ,               // Request
 419                                         serial->TI_I2C_Type,            // wValue (Address type)
 420                                         (__u16)(start_address+i),       // wIndex
 421                                         &buffer[i],                     // TransferBuffer
 422                                         0x01);                          // TransferBufferLength
 423                 if (status) {
 424                         dbg ("%s - ERROR %x", __FUNCTION__, status);
 425                         return status;
 426                 }
 427         }
 428
 429         dbg ("%s - start_address = %x, length = %d", __FUNCTION__, start_address, length);
 430         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
 431
 432         serial->TiReadI2C = 1;
 433
 434         return status;
 435 }
 436
 437 /* Write given block to TI EPROM memory */
 438 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 439 {
 440         int status = 0;
 441         int i;
 442         __u8 temp;
 443
 444         /* Must do a read before write */
 445         if (!serial->TiReadI2C) {
 446                 status = TIReadBootMemory(serial, 0, 1, &temp);
 447                 if (status)
 448                         return status;
 449         }
 450
 451         for (i=0; i < length; ++i) {
 452                 status = TISendVendorRequestSync (serial->serial->dev,
 453                                                 UMPC_MEMORY_WRITE,              // Request
 454                                                 buffer[i],                      // wValue
 455                                                 (__u16)(i+start_address),       // wIndex
 456                                                 NULL,                           // TransferBuffer
 457                                                 0);                             // TransferBufferLength
 458                 if (status)
 459                         return status;
 460         }
 461
 462         dbg ("%s - start_sddr = %x, length = %d", __FUNCTION__, start_address, length);
 463         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, length, buffer);
 464
 465         return status;
 466 }
 467
 468
 469 /* Write edgeport I2C memory to TI chip */
 470 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
 471 {
 472         int status = 0;
 473         int write_length;
 474         __be16 be_start_address;
 475
 476         /* We can only send a maximum of 1 aligned byte page at a time */
 477
 478         /* calulate the number of bytes left in the first page */
 479         write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
 480
 481         if (write_length > length)
 482                 write_length = length;
 483
 484         dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 485         usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
 486
 487         /* Write first page */
 488         be_start_address = cpu_to_be16 (start_address);
 489         status = TISendVendorRequestSync (serial->serial->dev,
 490                                         UMPC_MEMORY_WRITE,      // Request
 491                                         (__u16)address_type,    // wValue
 492                                         (__force __u16)be_start_address,        // wIndex
 493                                         buffer,                 // TransferBuffer
 494                                         write_length);
 495         if (status) {
 496                 dbg ("%s - ERROR %d", __FUNCTION__, status);
 497                 return status;
 498         }
 499
 500         length          -= write_length;
 501         start_address   += write_length;
 502         buffer          += write_length;
 503
 504         /* We should be aligned now -- can write max page size bytes at a time */
 505         while (length) {
 506                 if (length > EPROM_PAGE_SIZE)
 507                         write_length = EPROM_PAGE_SIZE;
 508                 else
 509                         write_length = length;
 510
 511                 dbg ("%s - Page Write Addr = %x, length = %d", __FUNCTION__, start_address, write_length);
 512                 usb_serial_debug_data(debug, &serial->serial->dev->dev, __FUNCTION__, write_length, buffer);
 513
 514                 /* Write next page */
 515                 be_start_address = cpu_to_be16 (start_address);
 516                 status = TISendVendorRequestSync (serial->serial->dev,
 517                                                 UMPC_MEMORY_WRITE,      // Request
 518                                                 (__u16)address_type,    // wValue
 519                                                 (__force __u16)be_start_address,        // wIndex
 520                                                 buffer,                 // TransferBuffer
 521                                                 write_length);          // TransferBufferLength
 522                 if (status) {
 523                         dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __FUNCTION__, status);
 524                         return status;
 525                 }
 526
 527                 length          -= write_length;
 528                 start_address   += write_length;
 529                 buffer          += write_length;
 530         }
 531         return status;
 532 }
 533
 534 /* Examine the UMP DMA registers and LSR
 535  *
 536  * Check the MSBit of the X and Y DMA byte count registers.
 537  * A zero in this bit indicates that the TX DMA buffers are empty
 538  * then check the TX Empty bit in the UART.
 539  */
 540 static int TIIsTxActive (struct edgeport_port *port)
 541 {
 542         int status;
 543         struct out_endpoint_desc_block *oedb;
 544         __u8 *lsr;
 545         int bytes_left = 0;
 546
 547         oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
 548         if (!oedb) {
 549                 dev_err (&port->port->dev, "%s - out of memory\n", __FUNCTION__);
 550                 return -ENOMEM;
 551         }
 552
 553         lsr = kmalloc (1, GFP_KERNEL);  /* Sigh, that's right, just one byte,
 554                                            as not all platforms can do DMA
 555                                            from stack */
 556         if (!lsr) {
 557                 kfree(oedb);
 558                 return -ENOMEM;
 559         }
 560         /* Read the DMA Count Registers */
 561         status = TIReadRam (port->port->serial->dev,
 562                             port->dma_address,
 563                             sizeof( *oedb),
 564                             (void *)oedb);
 565
 566         if (status)
 567                 goto exit_is_tx_active;
 568
 569         dbg ("%s - XByteCount    0x%X", __FUNCTION__, oedb->XByteCount);
 570
 571         /* and the LSR */
 572         status = TIReadRam (port->port->serial->dev,
 573                             port->uart_base + UMPMEM_OFFS_UART_LSR,
 574                             1,
 575                             lsr);
 576
 577         if (status)
 578                 goto exit_is_tx_active;
 579         dbg ("%s - LSR = 0x%X", __FUNCTION__, *lsr);
 580
 581         /* If either buffer has data or we are transmitting then return TRUE */
 582         if ((oedb->XByteCount & 0x80 ) != 0 )
 583                 bytes_left += 64;
 584
 585         if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
 586                 bytes_left += 1;
 587
 588         /* We return Not Active if we get any kind of error */
 589 exit_is_tx_active:
 590         dbg ("%s - return %d", __FUNCTION__, bytes_left );
 591
 592         kfree(lsr);
 593         kfree(oedb);
 594         return bytes_left;
 595 }
 596
 597 static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
 598 {
 599         int baud_rate;
 600         struct tty_struct *tty = port->port->tty;
 601         wait_queue_t wait;
 602         unsigned long flags;
 603
 604         if (!timeout)
 605                 timeout = (HZ*EDGE_CLOSING_WAIT)/100;
 606
 607         /* wait for data to drain from the buffer */
 608         spin_lock_irqsave(&port->ep_lock, flags);
 609         init_waitqueue_entry(&wait, current);
 610         add_wait_queue(&tty->write_wait, &wait);
 611         for (;;) {
 612                 set_current_state(TASK_INTERRUPTIBLE);
 613                 if (edge_buf_data_avail(port->ep_out_buf) == 0
 614                 || timeout == 0 || signal_pending(current)
 615                 || !usb_get_intfdata(port->port->serial->interface))  /* disconnect */
 616                         break;
 617                 spin_unlock_irqrestore(&port->ep_lock, flags);
 618                 timeout = schedule_timeout(timeout);
 619                 spin_lock_irqsave(&port->ep_lock, flags);
 620         }
 621         set_current_state(TASK_RUNNING);
 622         remove_wait_queue(&tty->write_wait, &wait);
 623         if (flush)
 624                 edge_buf_clear(port->ep_out_buf);
 625         spin_unlock_irqrestore(&port->ep_lock, flags);
 626
 627         /* wait for data to drain from the device */
 628         timeout += jiffies;
 629         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
 630         && usb_get_intfdata(port->port->serial->interface)) {  /* not disconnected */
 631                 if (!TIIsTxActive(port))
 632                         break;
 633                 msleep(10);
 634         }
 635
 636         /* disconnected */
 637         if (!usb_get_intfdata(port->port->serial->interface))
 638                 return;
 639
 640         /* wait one more character time, based on baud rate */
 641         /* (TIIsTxActive doesn't seem to wait for the last byte) */
 642         if ((baud_rate=port->baud_rate) == 0)
 643                 baud_rate = 50;
 644         msleep(max(1,(10000+baud_rate-1)/baud_rate));
 645 }
 646
 647 static int TIChooseConfiguration (struct usb_device *dev)
 648 {
 649         // There may be multiple configurations on this device, in which case
 650         // we would need to read and parse all of them to find out which one
 651         // we want. However, we just support one config at this point,
 652         // configuration # 1, which is Config Descriptor 0.
 653
 654         dbg ("%s - Number of Interfaces = %d", __FUNCTION__, dev->config->desc.bNumInterfaces);
 655         dbg ("%s - MAX Power            = %d", __FUNCTION__, dev->config->desc.bMaxPower*2);
 656
 657         if (dev->config->desc.bNumInterfaces != 1) {
 658                 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __FUNCTION__);
 659                 return -ENODEV;
 660         }
 661
 662         return 0;
 663 }
 664
 665 static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 666 {
 667         int status;
 668
 669         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 670                 status = TIReadDownloadMemory (serial->serial->dev,
 671                                                start_address,
 672                                                length,
 673                                                serial->TI_I2C_Type,
 674                                                buffer);
 675         } else {
 676                 status = TIReadBootMemory (serial,
 677                                            start_address,
 678                                            length,
 679                                            buffer);
 680         }
 681
 682         return status;
 683 }
 684
 685 static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
 686 {
 687         if (serial->product_info.TiMode == TI_MODE_BOOT)
 688                 return TIWriteBootMemory (serial,
 689                                           start_address,
 690                                           length,
 691                                           buffer);
 692
 693         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 694                 return TIWriteDownloadI2C (serial,
 695                                            start_address,
 696                                            length,
 697                                            serial->TI_I2C_Type,
 698                                            buffer);
 699
 700         return -EINVAL;
 701 }
 702
 703
 704
 705 /* Read a descriptor header from I2C based on type */
 706 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
 707 {
 708         int start_address;
 709         int status;
 710
 711         /* Search for requested descriptor in I2C */
 712         start_address = 2;
 713         do {
 714                 status = TIReadRom (serial,
 715                                    start_address,
 716                                    sizeof(struct ti_i2c_desc),
 717                                    (__u8 *)rom_desc );
 718                 if (status)
 719                         return 0;
 720
 721                 if (rom_desc->Type == desc_type)
 722                         return start_address;
 723
 724                 start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
 725
 726         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 727
 728         return 0;
 729 }
 730
 731 /* Validate descriptor checksum */
 732 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 733 {
 734         __u16 i;
 735         __u8 cs = 0;
 736
 737         for (i=0; i < rom_desc->Size; i++) {
 738                 cs = (__u8)(cs + buffer[i]);
 739         }
 740         if (cs != rom_desc->CheckSum) {
 741                 dbg ("%s - Mismatch %x - %x", __FUNCTION__, rom_desc->CheckSum, cs);
 742                 return -EINVAL;
 743         }
 744         return 0;
 745 }
 746
 747 /* Make sure that the I2C image is good */
 748 static int TiValidateI2cImage (struct edgeport_serial *serial)
 749 {
 750         struct device *dev = &serial->serial->dev->dev;
 751         int status = 0;
 752         struct ti_i2c_desc *rom_desc;
 753         int start_address = 2;
 754         __u8 *buffer;
 755         __u16 ttype;
 756
 757         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 758         if (!rom_desc) {
 759                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 760                 return -ENOMEM;
 761         }
 762         buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
 763         if (!buffer) {
 764                 dev_err (dev, "%s - out of memory when allocating buffer\n", __FUNCTION__);
 765                 kfree (rom_desc);
 766                 return -ENOMEM;
 767         }
 768
 769         // Read the first byte (Signature0) must be 0x52 or 0x10
 770         status = TIReadRom (serial, 0, 1, buffer);
 771         if (status)
 772                 goto ExitTiValidateI2cImage;
 773
 774         if (*buffer != UMP5152 && *buffer != UMP3410) {
 775                 dev_err (dev, "%s - invalid buffer signature\n", __FUNCTION__);
 776                 status = -ENODEV;
 777                 goto ExitTiValidateI2cImage;
 778         }
 779
 780         do {
 781                 // Validate the I2C
 782                 status = TIReadRom (serial,
 783                                 start_address,
 784                                 sizeof(struct ti_i2c_desc),
 785                                 (__u8 *)rom_desc);
 786                 if (status)
 787                         break;
 788
 789                 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
 790                         status = -ENODEV;
 791                         dbg ("%s - structure too big, erroring out.", __FUNCTION__);
 792                         break;
 793                 }
 794
 795                 dbg ("%s Type = 0x%x", __FUNCTION__, rom_desc->Type);
 796
 797                 // Skip type 2 record
 798                 ttype = rom_desc->Type & 0x0f;
 799                 if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 800                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) {
 801                         // Read the descriptor data
 802                         status = TIReadRom(serial,
 803                                                 start_address+sizeof(struct ti_i2c_desc),
 804                                                 rom_desc->Size,
 805                                                 buffer);
 806                         if (status)
 807                                 break;
 808
 809                         status = ValidChecksum(rom_desc, buffer);
 810                         if (status)
 811                                 break;
 812                 }
 813                 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
 814
 815         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
 816
 817         if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
 818                 status = -ENODEV;
 819
 820 ExitTiValidateI2cImage:
 821         kfree (buffer);
 822         kfree (rom_desc);
 823         return status;
 824 }
 825
 826 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
 827 {
 828         int status;
 829         int start_address;
 830         struct ti_i2c_desc *rom_desc;
 831         struct edge_ti_manuf_descriptor *desc;
 832
 833         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
 834         if (!rom_desc) {
 835                 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __FUNCTION__);
 836                 return -ENOMEM;
 837         }
 838         start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
 839
 840         if (!start_address) {
 841                 dbg ("%s - Edge Descriptor not found in I2C", __FUNCTION__);
 842                 status = -ENODEV;
 843                 goto exit;
 844         }
 845
 846         // Read the descriptor data
 847         status = TIReadRom (serial,
 848                                 start_address+sizeof(struct ti_i2c_desc),
 849                                 rom_desc->Size,
 850                                 buffer);
 851         if (status)
 852                 goto exit;
 853
 854         status = ValidChecksum(rom_desc, buffer);
 855
 856         desc = (struct edge_ti_manuf_descriptor *)buffer;
 857         dbg ( "%s - IonConfig      0x%x", __FUNCTION__, desc->IonConfig         );
 858         dbg ( "%s - Version          %d", __FUNCTION__, desc->Version           );
 859         dbg ( "%s - Cpu/Board      0x%x", __FUNCTION__, desc->CpuRev_BoardRev   );
 860         dbg ( "%s - NumPorts         %d", __FUNCTION__, desc->NumPorts          );
 861         dbg ( "%s - NumVirtualPorts  %d", __FUNCTION__, desc->NumVirtualPorts   );
 862         dbg ( "%s - TotalPorts       %d", __FUNCTION__, desc->TotalPorts        );
 863
 864 exit:
 865         kfree (rom_desc);
 866         return status;
 867 }
 868
 869 /* Build firmware header used for firmware update */
 870 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
 871 {
 872         __u8 *buffer;
 873         int buffer_size;
 874         int i;
 875         __u8 cs = 0;
 876         struct ti_i2c_desc *i2c_header;
 877         struct ti_i2c_image_header *img_header;
 878         struct ti_i2c_firmware_rec *firmware_rec;
 879
 880         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
 881         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
 882         // will download the latest firmware (padded to 15.5k) into the UMP ram.
 883         // And finally when the device comes back up in download mode the driver will cause
 884         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
 885         // the record type from 0xf2 to 0x02.
 886
 887         // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
 888         buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
 889
 890         buffer = kmalloc (buffer_size, GFP_KERNEL);
 891         if (!buffer) {
 892                 dev_err (dev, "%s - out of memory\n", __FUNCTION__);
 893                 return -ENOMEM;
 894         }
 895
 896         // Set entire image of 0xffs
 897         memset (buffer, 0xff, buffer_size);
 898
 899         // Copy version number into firmware record
 900         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 901
 902         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 903         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 904
 905         // Pointer to fw_down memory image
 906         img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
 907
 908         memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
 909                 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
 910                 le16_to_cpu(img_header->Length));
 911
 912         for (i=0; i < buffer_size; i++) {
 913                 cs = (__u8)(cs + buffer[i]);
 914         }
 915
 916         kfree (buffer);
 917
 918         // Build new header
 919         i2c_header =  (struct ti_i2c_desc *)header;
 920         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 921
 922         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 923         i2c_header->Size        = (__u16)buffer_size;
 924         i2c_header->CheckSum    = cs;
 925         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
 926         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
 927
 928         return 0;
 929 }
 930
 931 /* Try to figure out what type of I2c we have */
 932 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
 933 {
 934         int status;
 935         __u8 data;
 936
 937         // Try to read type 2
 938         status = TIReadVendorRequestSync (serial->serial->dev,
 939                                         UMPC_MEMORY_READ,               // Request
 940                                         DTK_ADDR_SPACE_I2C_TYPE_II,     // wValue (Address type)
 941                                         0,                              // wIndex
 942                                         &data,                          // TransferBuffer
 943                                         0x01);                          // TransferBufferLength
 944         if (status)
 945                 dbg ("%s - read 2 status error = %d", __FUNCTION__, status);
 946         else
 947                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 948         if ((!status) && (data == UMP5152 || data == UMP3410)) {
 949                 dbg ("%s - ROM_TYPE_II", __FUNCTION__);
 950                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 951                 return 0;
 952         }
 953
 954         // Try to read type 3
 955         status = TIReadVendorRequestSync (serial->serial->dev,
 956                                         UMPC_MEMORY_READ,               // Request
 957                                         DTK_ADDR_SPACE_I2C_TYPE_III,    // wValue (Address type)
 958                                         0,                              // wIndex
 959                                         &data,                          // TransferBuffer
 960                                         0x01);                          // TransferBufferLength
 961         if (status)
 962                 dbg ("%s - read 3 status error = %d", __FUNCTION__, status);
 963         else
 964                 dbg ("%s - read 2 data = 0x%x", __FUNCTION__, data);
 965         if ((!status) && (data == UMP5152 || data == UMP3410)) {
 966                 dbg ("%s - ROM_TYPE_III", __FUNCTION__);
 967                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 968                 return 0;
 969         }
 970
 971         dbg ("%s - Unknown", __FUNCTION__);
 972         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 973         return -ENODEV;
 974 }
 975
 976 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
 977 {
 978         int status;
 979
 980         status = usb_bulk_msg (serial->dev,
 981                                 usb_sndbulkpipe(serial->dev,
 982                                                 serial->port[0]->bulk_out_endpointAddress),
 983                                 buffer,
 984                                 length,
 985                                 num_sent,
 986                                 1000);
 987         return status;
 988 }
 989
 990 /* Download given firmware image to the device (IN BOOT MODE) */
 991 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
 992 {
 993         int status = 0;
 994         int pos;
 995         int transfer;
 996         int done;
 997
 998         // Transfer firmware image
 999         for (pos = 0; pos < image_length; ) {
1000                 // Read the next buffer from file
1001                 transfer = image_length - pos;
1002                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1003                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1004
1005                 // Transfer data
1006                 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
1007                 if (status)
1008                         break;
1009                 // Advance buffer pointer
1010                 pos += done;
1011         }
1012
1013         return status;
1014 }
1015
1016 // FIXME!!!
1017 static int TIConfigureBootDevice (struct usb_device *dev)
1018 {
1019         return 0;
1020 }
1021
1022 /**
1023  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1024  *
1025  * This routine downloads the main operating code into the TI5052, using the
1026  * boot code already burned into E2PROM or ROM.
1027  */
1028 static int TIDownloadFirmware (struct edgeport_serial *serial)
1029 {
1030         struct device *dev = &serial->serial->dev->dev;
1031         int status = 0;
1032         int start_address;
1033         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1034         struct usb_interface_descriptor *interface;
1035         int download_cur_ver;
1036         int download_new_ver;
1037
1038         /* This routine is entered by both the BOOT mode and the Download mode
1039          * We can determine which code is running by the reading the config
1040          * descriptor and if we have only one bulk pipe it is in boot mode
1041          */
1042         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1043
1044         /* Default to type 2 i2c */
1045         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1046
1047         status = TIChooseConfiguration (serial->serial->dev);
1048         if (status)
1049                 return status;
1050
1051         interface = &serial->serial->interface->cur_altsetting->desc;
1052         if (!interface) {
1053                 dev_err (dev, "%s - no interface set, error!\n", __FUNCTION__);
1054                 return -ENODEV;
1055         }
1056
1057         // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1058         // if we have more than one endpoint we are definitely in download mode
1059         if (interface->bNumEndpoints > 1)
1060                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1061         else
1062                 // Otherwise we will remain in configuring mode
1063                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1064
1065         // Save Download Version Number
1066         OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1067         OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1068         OperationalCodeImageVersion.BuildNumber  = PagableOperationalCodeImageVersion.BuildNumber;
1069
1070         /********************************************************************/
1071         /* Download Mode */
1072         /********************************************************************/
1073         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1074                 struct ti_i2c_desc *rom_desc;
1075
1076                 dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN DOWNLOAD MODE>>>>>>>>>>", __FUNCTION__);
1077
1078                 status = TiValidateI2cImage (serial);
1079                 if (status) {
1080                         dbg ("%s - <<<<<<<<<<<<<<<DOWNLOAD MODE -- BAD I2C >>>>>>>>>>",
1081                              __FUNCTION__);
1082                         return status;
1083                 }
1084
1085                 /* Validate Hardware version number
1086                  * Read Manufacturing Descriptor from TI Based Edgeport
1087                  */
1088                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1089                 if (!ti_manuf_desc) {
1090                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1091                         return -ENOMEM;
1092                 }
1093                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1094                 if (status) {
1095                         kfree (ti_manuf_desc);
1096                         return status;
1097                 }
1098
1099                 // Check version number of ION descriptor
1100                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1101                         dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1102                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1103                         kfree (ti_manuf_desc);
1104                         return -EINVAL;
1105                 }
1106
1107                 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1108                 if (!rom_desc) {
1109                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1110                         kfree (ti_manuf_desc);
1111                         return -ENOMEM;
1112                 }
1113
1114                 // Search for type 2 record (firmware record)
1115                 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1116                         struct ti_i2c_firmware_rec *firmware_version;
1117                         __u8 record;
1118
1119                         dbg ("%s - Found Type FIRMWARE (Type 2) record", __FUNCTION__);
1120
1121                         firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1122                         if (!firmware_version) {
1123                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1124                                 kfree (rom_desc);
1125                                 kfree (ti_manuf_desc);
1126                                 return -ENOMEM;
1127                         }
1128
1129                         // Validate version number
1130                         // Read the descriptor data
1131                         status = TIReadRom (serial,
1132                                         start_address+sizeof(struct ti_i2c_desc),
1133                                         sizeof(struct ti_i2c_firmware_rec),
1134                                         (__u8 *)firmware_version);
1135                         if (status) {
1136                                 kfree (firmware_version);
1137                                 kfree (rom_desc);
1138                                 kfree (ti_manuf_desc);
1139                                 return status;
1140                         }
1141
1142                         // Check version number of download with current version in I2c
1143                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1144                                            (firmware_version->Ver_Minor);
1145                         download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1146                                            (OperationalCodeImageVersion.MinorVersion);
1147
1148                         dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
1149                              __FUNCTION__,
1150                              firmware_version->Ver_Major,
1151                              firmware_version->Ver_Minor,
1152                              OperationalCodeImageVersion.MajorVersion,
1153                              OperationalCodeImageVersion.MinorVersion);
1154
1155                         // Check if we have an old version in the I2C and update if necessary
1156                         if (download_cur_ver != download_new_ver) {
1157                                 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1158                                      __FUNCTION__,
1159                                      firmware_version->Ver_Major,
1160                                      firmware_version->Ver_Minor,
1161                                      OperationalCodeImageVersion.MajorVersion,
1162                                      OperationalCodeImageVersion.MinorVersion);
1163
1164                                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1165                                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1166                                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1167                                 // And finally when the device comes back up in download mode the driver will cause
1168                                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1169                                 // the record type from 0xf2 to 0x02.
1170
1171                                 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1172
1173                                 // Change the I2C Firmware record type to 0xf2 to trigger an update
1174                                 status = TIWriteRom (serial,
1175                                                         start_address,
1176                                                         sizeof(record),
1177                                                         &record);
1178                                 if (status) {
1179                                         kfree (firmware_version);
1180                                         kfree (rom_desc);
1181                                         kfree (ti_manuf_desc);
1182                                         return status;
1183                                 }
1184
1185                                 // verify the write -- must do this in order for write to
1186                                 // complete before we do the hardware reset
1187                                 status = TIReadRom (serial,
1188                                                         start_address,
1189                                                         sizeof(record),
1190                                                         &record);
1191
1192                                 if (status) {
1193                                         kfree (firmware_version);
1194                                         kfree (rom_desc);
1195                                         kfree (ti_manuf_desc);
1196                                         return status;
1197                                 }
1198
1199                                 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1200                                         dev_err (dev, "%s - error resetting device\n", __FUNCTION__);
1201                                         kfree (firmware_version);
1202                                         kfree (rom_desc);
1203                                         kfree (ti_manuf_desc);
1204                                         return -ENODEV;
1205                                 }
1206
1207                                 dbg ("%s - HARDWARE RESET", __FUNCTION__);
1208
1209                                 // Reset UMP -- Back to BOOT MODE
1210                                 status = TISendVendorRequestSync (serial->serial->dev,
1211                                                                 UMPC_HARDWARE_RESET,    // Request
1212                                                                 0,                      // wValue
1213                                                                 0,                      // wIndex
1214                                                                 NULL,                   // TransferBuffer
1215                                                                 0);                     // TransferBufferLength
1216
1217                                 dbg ( "%s - HARDWARE RESET return %d", __FUNCTION__, status);
1218
1219                                 /* return an error on purpose. */
1220                                 kfree (firmware_version);
1221                                 kfree (rom_desc);
1222                                 kfree (ti_manuf_desc);
1223                                 return -ENODEV;
1224                         }
1225                         kfree (firmware_version);
1226                 }
1227                 // Search for type 0xF2 record (firmware blank record)
1228                 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1229                         #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1230                         __u8 *header;
1231                         __u8 *vheader;
1232
1233                         header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
1234                         if (!header) {
1235                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1236                                 kfree (rom_desc);
1237                                 kfree (ti_manuf_desc);
1238                                 return -ENOMEM;
1239                         }
1240
1241                         vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1242                         if (!vheader) {
1243                                 dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1244                                 kfree (header);
1245                                 kfree (rom_desc);
1246                                 kfree (ti_manuf_desc);
1247                                 return -ENOMEM;
1248                         }
1249
1250                         dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __FUNCTION__);
1251
1252                         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1253                         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1254                         // will download the latest firmware (padded to 15.5k) into the UMP ram.
1255                         // And finally when the device comes back up in download mode the driver will cause
1256                         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1257                         // the record type from 0xf2 to 0x02.
1258                         status = BuildI2CFirmwareHeader(header, dev);
1259                         if (status) {
1260                                 kfree (vheader);
1261                                 kfree (header);
1262                                 kfree (rom_desc);
1263                                 kfree (ti_manuf_desc);
1264                                 return status;
1265                         }
1266
1267                         // Update I2C with type 0xf2 record with correct size and checksum
1268                         status = TIWriteRom (serial,
1269                                                 start_address,
1270                                                 HEADER_SIZE,
1271                                                 header);
1272                         if (status) {
1273                                 kfree (vheader);
1274                                 kfree (header);
1275                                 kfree (rom_desc);
1276                                 kfree (ti_manuf_desc);
1277                                 return status;
1278                         }
1279
1280                         // verify the write -- must do this in order for write to
1281                         // complete before we do the hardware reset
1282                         status = TIReadRom (serial,
1283                                                 start_address,
1284                                                 HEADER_SIZE,
1285                                                 vheader);
1286
1287                         if (status) {
1288                                 dbg ("%s - can't read header back", __FUNCTION__);
1289                                 kfree (vheader);
1290                                 kfree (header);
1291                                 kfree (rom_desc);
1292                                 kfree (ti_manuf_desc);
1293                                 return status;
1294                         }
1295                         if (memcmp(vheader, header, HEADER_SIZE)) {
1296                                 dbg ("%s - write download record failed", __FUNCTION__);
1297                                 kfree (vheader);
1298                                 kfree (header);
1299                                 kfree (rom_desc);
1300                                 kfree (ti_manuf_desc);
1301                                 return status;
1302                         }
1303
1304                         kfree (vheader);
1305                         kfree (header);
1306
1307                         dbg ("%s - Start firmware update", __FUNCTION__);
1308
1309                         // Tell firmware to copy download image into I2C
1310                         status = TISendVendorRequestSync (serial->serial->dev,
1311                                                 UMPC_COPY_DNLD_TO_I2C,  // Request
1312                                                 0,                      // wValue
1313                                                 0,                      // wIndex
1314                                                 NULL,                   // TransferBuffer
1315                                                 0);                     // TransferBufferLength
1316
1317                         dbg ("%s - Update complete 0x%x", __FUNCTION__, status);
1318                         if (status) {
1319                                 dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __FUNCTION__);
1320                                 kfree (rom_desc);
1321                                 kfree (ti_manuf_desc);
1322                                 return status;
1323                         }
1324                 }
1325
1326                 // The device is running the download code
1327                 kfree (rom_desc);
1328                 kfree (ti_manuf_desc);
1329                 return 0;
1330         }
1331
1332         /********************************************************************/
1333         /* Boot Mode */
1334         /********************************************************************/
1335         dbg ("%s - <<<<<<<<<<<<<<<RUNNING IN BOOT MODE>>>>>>>>>>>>>>>",
1336              __FUNCTION__);
1337
1338         // Configure the TI device so we can use the BULK pipes for download
1339         status = TIConfigureBootDevice (serial->serial->dev);
1340         if (status)
1341                 return status;
1342
1343         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) {
1344                 dbg ("%s - VID = 0x%x", __FUNCTION__,
1345                      le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1346                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1347                 goto StayInBootMode;
1348         }
1349
1350         // We have an ION device (I2c Must be programmed)
1351         // Determine I2C image type
1352         if (TIGetI2cTypeInBootMode(serial)) {
1353                 goto StayInBootMode;
1354         }
1355
1356         // Registry variable set?
1357         if (TIStayInBootMode) {
1358                 dbg ("%s - TIStayInBootMode", __FUNCTION__);
1359                 goto StayInBootMode;
1360         }
1361
1362         // Check for ION Vendor ID and that the I2C is valid
1363         if (!TiValidateI2cImage(serial)) {
1364                 struct ti_i2c_image_header *header;
1365                 int i;
1366                 __u8 cs = 0;
1367                 __u8 *buffer;
1368                 int buffer_size;
1369
1370                 /* Validate Hardware version number
1371                  * Read Manufacturing Descriptor from TI Based Edgeport
1372                  */
1373                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1374                 if (!ti_manuf_desc) {
1375                         dev_err (dev, "%s - out of memory.\n", __FUNCTION__);
1376                         return -ENOMEM;
1377                 }
1378                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1379                 if (status) {
1380                         kfree (ti_manuf_desc);
1381                         goto StayInBootMode;
1382                 }
1383
1384                 // Check for version 2
1385                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1386                         dbg ("%s - Wrong CPU Rev %d (Must be 2)", __FUNCTION__,
1387                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1388                         kfree (ti_manuf_desc);
1389                         goto StayInBootMode;
1390                 }
1391
1392                 kfree (ti_manuf_desc);
1393
1394                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1395                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver
1396                 // will download the latest firmware (padded to 15.5k) into the UMP ram.
1397                 // And finally when the device comes back up in download mode the driver will cause
1398                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1399                 // the record type from 0xf2 to 0x02.
1400
1401                 /*
1402                  * Do we really have to copy the whole firmware image,
1403                  * or could we do this in place!
1404                  */
1405
1406                 // Allocate a 15.5k buffer + 3 byte header
1407                 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1408                 buffer = kmalloc (buffer_size, GFP_KERNEL);
1409                 if (!buffer) {
1410                         dev_err (dev, "%s - out of memory\n", __FUNCTION__);
1411                         return -ENOMEM;
1412                 }
1413
1414                 // Initialize the buffer to 0xff (pad the buffer)
1415                 memset (buffer, 0xff, buffer_size);
1416
1417                 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1418
1419                 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1420                         cs = (__u8)(cs + buffer[i]);
1421                 }
1422
1423                 header = (struct ti_i2c_image_header *)buffer;
1424
1425                 // update length and checksum after padding
1426                 header->Length   = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header)));
1427                 header->CheckSum = cs;
1428
1429                 // Download the operational code
1430                 dbg ("%s - Downloading operational code image (TI UMP)", __FUNCTION__);
1431                 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1432
1433                 kfree (buffer);
1434
1435                 if (status) {
1436                         dbg ("%s - Error downloading operational code image", __FUNCTION__);
1437                         return status;
1438                 }
1439
1440                 // Device will reboot
1441                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1442
1443                 dbg ("%s - Download successful -- Device rebooting...", __FUNCTION__);
1444
1445                 /* return an error on purpose */
1446                 return -ENODEV;
1447         }
1448
1449 StayInBootMode:
1450         // Eprom is invalid or blank stay in boot mode
1451         dbg ("%s - <<<<<<<<<<<<<<<STAYING IN BOOT MODE>>>>>>>>>>>>", __FUNCTION__);
1452         serial->product_info.TiMode = TI_MODE_BOOT;
1453
1454         return 0;
1455 }
1456
1457
1458 static int TISetDtr (struct edgeport_port *port)
1459 {
1460         int port_number = port->port->number - port->port->serial->minor;
1461
1462         dbg ("%s", __FUNCTION__);
1463         port->shadow_mcr |= MCR_DTR;
1464
1465         return TIWriteCommandSync (port->port->serial->dev,
1466                                 UMPC_SET_CLR_DTR,
1467                                 (__u8)(UMPM_UART1_PORT + port_number),
1468                                 1,      /* set */
1469                                 NULL,
1470                                 0);
1471 }
1472
1473 static int TIClearDtr (struct edgeport_port *port)
1474 {
1475         int port_number = port->port->number - port->port->serial->minor;
1476
1477         dbg ("%s", __FUNCTION__);
1478         port->shadow_mcr &= ~MCR_DTR;
1479
1480         return TIWriteCommandSync (port->port->serial->dev,
1481                                 UMPC_SET_CLR_DTR,
1482                                 (__u8)(UMPM_UART1_PORT + port_number),
1483                                 0,      /* clear */
1484                                 NULL,
1485                                 0);
1486 }
1487
1488 static int TISetRts (struct edgeport_port *port)
1489 {
1490         int port_number = port->port->number - port->port->serial->minor;
1491
1492         dbg ("%s", __FUNCTION__);
1493         port->shadow_mcr |= MCR_RTS;
1494
1495         return TIWriteCommandSync (port->port->serial->dev,
1496                                 UMPC_SET_CLR_RTS,
1497                                 (__u8)(UMPM_UART1_PORT + port_number),
1498                                 1,      /* set */
1499                                 NULL,
1500                                 0);
1501 }
1502
1503 static int TIClearRts (struct edgeport_port *port)
1504 {
1505         int port_number = port->port->number - port->port->serial->minor;
1506
1507         dbg ("%s", __FUNCTION__);
1508         port->shadow_mcr &= ~MCR_RTS;
1509
1510         return TIWriteCommandSync (port->port->serial->dev,
1511                                 UMPC_SET_CLR_RTS,
1512                                 (__u8)(UMPM_UART1_PORT + port_number),
1513                                 0,      /* clear */
1514                                 NULL,
1515                                 0);
1516 }
1517
1518 static int TISetLoopBack (struct edgeport_port *port)
1519 {
1520         int port_number = port->port->number - port->port->serial->minor;
1521
1522         dbg ("%s", __FUNCTION__);
1523
1524         return TIWriteCommandSync (port->port->serial->dev,
1525                                 UMPC_SET_CLR_LOOPBACK,
1526                                 (__u8)(UMPM_UART1_PORT + port_number),
1527                                 1,      /* set */
1528                                 NULL,
1529                                 0);
1530 }
1531
1532 static int TIClearLoopBack (struct edgeport_port *port)
1533 {
1534         int port_number = port->port->number - port->port->serial->minor;
1535
1536         dbg ("%s", __FUNCTION__);
1537
1538         return TIWriteCommandSync (port->port->serial->dev,
1539                                 UMPC_SET_CLR_LOOPBACK,
1540                                 (__u8)(UMPM_UART1_PORT + port_number),
1541                                 0,      /* clear */
1542                                 NULL,
1543                                 0);
1544 }
1545
1546 static int TISetBreak (struct edgeport_port *port)
1547 {
1548         int port_number = port->port->number - port->port->serial->minor;
1549
1550         dbg ("%s", __FUNCTION__);
1551
1552         return TIWriteCommandSync (port->port->serial->dev,
1553                                 UMPC_SET_CLR_BREAK,
1554                                 (__u8)(UMPM_UART1_PORT + port_number),
1555                                 1,      /* set */
1556                                 NULL,
1557                                 0);
1558 }
1559
1560 static int TIClearBreak (struct edgeport_port *port)
1561 {
1562         int port_number = port->port->number - port->port->serial->minor;
1563
1564         dbg ("%s", __FUNCTION__);
1565
1566         return TIWriteCommandSync (port->port->serial->dev,
1567                                 UMPC_SET_CLR_BREAK,
1568                                 (__u8)(UMPM_UART1_PORT + port_number),
1569                                 0,      /* clear */
1570                                 NULL,
1571                                 0);
1572 }
1573
1574 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1575 {
1576         int status = 0;
1577
1578         dbg ("%s - %x", __FUNCTION__, mcr);
1579
1580         if (mcr & MCR_DTR)
1581                 status = TISetDtr (port);
1582         else
1583                 status = TIClearDtr (port);
1584
1585         if (status)
1586                 return status;
1587
1588         if (mcr & MCR_RTS)
1589                 status = TISetRts (port);
1590         else
1591                 status = TIClearRts (port);
1592
1593         if (status)
1594                 return status;
1595
1596         if (mcr & MCR_LOOPBACK)
1597                 status = TISetLoopBack (port);
1598         else
1599                 status = TIClearLoopBack (port);
1600
1601         return status;
1602 }
1603
1604
1605
1606 /* Convert TI LSR to standard UART flags */
1607 static __u8 MapLineStatus (__u8 ti_lsr)
1608 {
1609         __u8 lsr = 0;
1610
1611 #define MAP_FLAG(flagUmp, flagUart)    \
1612         if (ti_lsr & flagUmp) \
1613                 lsr |= flagUart;
1614
1615         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1616         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1617         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1618         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1619         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* receive data available */
1620         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* transmit holding register empty */
1621
1622 #undef MAP_FLAG
1623
1624         return lsr;
1625 }
1626
1627 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1628 {
1629         struct async_icount *icount;
1630         struct tty_struct *tty;
1631
1632         dbg ("%s - %02x", __FUNCTION__, msr);
1633
1634         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1635                 icount = &edge_port->icount;
1636
1637                 /* update input line counters */
1638                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1639                         icount->cts++;
1640                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1641                         icount->dsr++;
1642                 if (msr & EDGEPORT_MSR_DELTA_CD)
1643                         icount->dcd++;
1644                 if (msr & EDGEPORT_MSR_DELTA_RI)
1645                         icount->rng++;
1646                 wake_up_interruptible (&edge_port->delta_msr_wait);
1647         }
1648
1649         /* Save the new modem status */
1650         edge_port->shadow_msr = msr & 0xf0;
1651
1652         tty = edge_port->port->tty;
1653         /* handle CTS flow control */
1654         if (tty && C_CRTSCTS(tty)) {
1655                 if (msr & EDGEPORT_MSR_CTS) {
1656                         tty->hw_stopped = 0;
1657                         tty_wakeup(tty);
1658                 } else {
1659                         tty->hw_stopped = 1;
1660                 }
1661         }
1662
1663         return;
1664 }
1665
1666 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1667 {
1668         struct async_icount *icount;
1669         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1670
1671         dbg ("%s - %02x", __FUNCTION__, new_lsr);
1672
1673         edge_port->shadow_lsr = lsr;
1674
1675         if (new_lsr & LSR_BREAK) {
1676                 /*
1677                  * Parity and Framing errors only count if they
1678                  * occur exclusive of a break being received.
1679                  */
1680                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1681         }
1682
1683         /* Place LSR data byte into Rx buffer */
1684         if (lsr_data && edge_port->port->tty)
1685                 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
1686
1687         /* update input line counters */
1688         icount = &edge_port->icount;
1689         if (new_lsr & LSR_BREAK)
1690                 icount->brk++;
1691         if (new_lsr & LSR_OVER_ERR)
1692                 icount->overrun++;
1693         if (new_lsr & LSR_PAR_ERR)
1694                 icount->parity++;
1695         if (new_lsr & LSR_FRM_ERR)
1696                 icount->frame++;
1697 }
1698
1699
1700 static void edge_interrupt_callback (struct urb *urb, struct pt_regs *regs)
1701 {
1702         struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1703         struct usb_serial_port *port;
1704         struct edgeport_port *edge_port;
1705         unsigned char *data = urb->transfer_buffer;
1706         int length = urb->actual_length;
1707         int port_number;
1708         int function;
1709         int status;
1710         __u8 lsr;
1711         __u8 msr;
1712
1713         dbg("%s", __FUNCTION__);
1714
1715         switch (urb->status) {
1716         case 0:
1717                 /* success */
1718                 break;
1719         case -ECONNRESET:
1720         case -ENOENT:
1721         case -ESHUTDOWN:
1722                 /* this urb is terminated, clean up */
1723                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1724                 return;
1725         default:
1726                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __FUNCTION__, urb->status);
1727                 goto exit;
1728         }
1729
1730         if (!length) {
1731                 dbg ("%s - no data in urb", __FUNCTION__);
1732                 goto exit;
1733         }
1734
1735         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __FUNCTION__, length, data);
1736
1737         if (length != 2) {
1738                 dbg ("%s - expecting packet of size 2, got %d", __FUNCTION__, length);
1739                 goto exit;
1740         }
1741
1742         port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1743         function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1744         dbg ("%s - port_number %d, function %d, info 0x%x",
1745              __FUNCTION__, port_number, function, data[1]);
1746         port = edge_serial->serial->port[port_number];
1747         edge_port = usb_get_serial_port_data(port);
1748         if (!edge_port) {
1749                 dbg ("%s - edge_port not found", __FUNCTION__);
1750                 return;
1751         }
1752         switch (function) {
1753         case TIUMP_INTERRUPT_CODE_LSR:
1754                 lsr = MapLineStatus(data[1]);
1755                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1756                         /* Save the LSR event for bulk read completion routine */
1757                         dbg ("%s - LSR Event Port %u LSR Status = %02x",
1758                              __FUNCTION__, port_number, lsr);
1759                         edge_port->lsr_event = 1;
1760                         edge_port->lsr_mask = lsr;
1761                 } else {
1762                         dbg ("%s - ===== Port %d LSR Status = %02x ======",
1763                              __FUNCTION__, port_number, lsr);
1764                         handle_new_lsr (edge_port, 0, lsr, 0);
1765                 }
1766                 break;
1767
1768         case TIUMP_INTERRUPT_CODE_MSR:  // MSR
1769                 /* Copy MSR from UMP */
1770                 msr = data[1];
1771                 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1772                      __FUNCTION__, port_number, msr);
1773                 handle_new_msr (edge_port, msr);
1774                 break;
1775
1776         default:
1777                 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1778                          __FUNCTION__, data[1]);
1779                 break;
1780
1781         }
1782
1783 exit:
1784         status = usb_submit_urb (urb, GFP_ATOMIC);
1785         if (status)
1786                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1787                          __FUNCTION__, status);
1788 }
1789
1790 static void edge_bulk_in_callback (struct urb *urb, struct pt_regs *regs)
1791 {
1792         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1793         unsigned char *data = urb->transfer_buffer;
1794         struct tty_struct *tty;
1795         int status = 0;
1796         int port_number;
1797
1798         dbg("%s", __FUNCTION__);
1799
1800         switch (urb->status) {
1801         case 0:
1802                 /* success */
1803                 break;
1804         case -ECONNRESET:
1805         case -ENOENT:
1806         case -ESHUTDOWN:
1807                 /* this urb is terminated, clean up */
1808                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1809                 return;
1810         default:
1811                 dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
1812                      __FUNCTION__, urb->status );
1813         }
1814
1815         if (urb->status == -EPIPE)
1816                 goto exit;
1817
1818         if (urb->status) {
1819                 dev_err(&urb->dev->dev,"%s - stopping read!\n", __FUNCTION__);
1820                 return;
1821         }
1822
1823         port_number = edge_port->port->number - edge_port->port->serial->minor;
1824
1825         if (edge_port->lsr_event) {
1826                 edge_port->lsr_event = 0;
1827                 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1828                      __FUNCTION__, port_number, edge_port->lsr_mask, *data);
1829                 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1830                 /* Adjust buffer length/pointer */
1831                 --urb->actual_length;
1832                 ++data;
1833         }
1834
1835         tty = edge_port->port->tty;
1836         if (tty && urb->actual_length) {
1837                 usb_serial_debug_data(debug, &edge_port->port->dev, __FUNCTION__, urb->actual_length, data);
1838
1839                 if (edge_port->close_pending) {
1840                         dbg ("%s - close is pending, dropping data on the floor.", __FUNCTION__);
1841                 } else {
1842                         edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
1843                 }
1844                 edge_port->icount.rx += urb->actual_length;
1845         }
1846
1847 exit:
1848         /* continue read unless stopped */
1849         spin_lock(&edge_port->ep_lock);
1850         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1851                 urb->dev = edge_port->port->serial->dev;
1852                 status = usb_submit_urb(urb, GFP_ATOMIC);
1853         } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1854                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1855         }
1856         spin_unlock(&edge_port->ep_lock);
1857         if (status)
1858                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1859                          __FUNCTION__, status);
1860 }
1861
1862 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
1863 {
1864         int cnt;
1865
1866         do {
1867                 cnt = tty_buffer_request_room(tty, length);
1868                 if (cnt < length) {
1869                         dev_err(dev, "%s - dropping data, %d bytes lost\n",
1870                                 __FUNCTION__, length - cnt);
1871                         if(cnt == 0)
1872                                 break;
1873                 }
1874                 tty_insert_flip_string(tty, data, cnt);
1875                 data += cnt;
1876                 length -= cnt;
1877         } while (length > 0);
1878
1879         tty_flip_buffer_push(tty);
1880 }
1881
1882 static void edge_bulk_out_callback (struct urb *urb, struct pt_regs *regs)
1883 {
1884         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1885         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1886
1887         dbg ("%s - port %d", __FUNCTION__, port->number);
1888
1889         edge_port->ep_write_urb_in_use = 0;
1890
1891         switch (urb->status) {
1892         case 0:
1893                 /* success */
1894                 break;
1895         case -ECONNRESET:
1896         case -ENOENT:
1897         case -ESHUTDOWN:
1898                 /* this urb is terminated, clean up */
1899                 dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
1900                 return;
1901         default:
1902                 dev_err (&urb->dev->dev,"%s - nonzero write bulk status received: %d\n",
1903                      __FUNCTION__, urb->status);
1904         }
1905
1906         /* send any buffered data */
1907         edge_send(port);
1908 }
1909
1910 static int edge_open (struct usb_serial_port *port, struct file * filp)
1911 {
1912         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1913         struct edgeport_serial *edge_serial;
1914         struct usb_device *dev;
1915         struct urb *urb;
1916         int port_number;
1917         int status;
1918         u16 open_settings;
1919         u8 transaction_timeout;
1920
1921         dbg("%s - port %d", __FUNCTION__, port->number);
1922
1923         if (edge_port == NULL)
1924                 return -ENODEV;
1925
1926         if (port->tty)
1927                 port->tty->low_latency = low_latency;
1928
1929         port_number = port->number - port->serial->minor;
1930         switch (port_number) {
1931                 case 0:
1932                         edge_port->uart_base = UMPMEM_BASE_UART1;
1933                         edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1934                         break;
1935                 case 1:
1936                         edge_port->uart_base = UMPMEM_BASE_UART2;
1937                         edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1938                         break;
1939                 default:
1940                         dev_err (&port->dev, "Unknown port number!!!\n");
1941                         return -ENODEV;
1942         }
1943
1944         dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1945              __FUNCTION__, port_number, edge_port->uart_base, edge_port->dma_address);
1946
1947         dev = port->serial->dev;
1948
1949         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1950         init_waitqueue_head (&edge_port->delta_msr_wait);
1951
1952         /* turn off loopback */
1953         status = TIClearLoopBack (edge_port);
1954         if (status) {
1955                 dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
1956                         __FUNCTION__, status);
1957                 return status;
1958         }
1959
1960         /* set up the port settings */
1961         edge_set_termios (port, NULL);
1962
1963         /* open up the port */
1964
1965         /* milliseconds to timeout for DMA transfer */
1966         transaction_timeout = 2;
1967
1968         edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1969
1970         // milliseconds to timeout for DMA transfer
1971         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1972                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1973                              (transaction_timeout << 2));
1974
1975         dbg ("%s - Sending UMPC_OPEN_PORT", __FUNCTION__);
1976
1977         /* Tell TI to open and start the port */
1978         status = TIWriteCommandSync (dev,
1979                                         UMPC_OPEN_PORT,
1980                                         (u8)(UMPM_UART1_PORT + port_number),
1981                                         open_settings,
1982                                         NULL,
1983                                         0);
1984         if (status) {
1985                 dev_err(&port->dev,"%s - cannot send open command, %d\n", __FUNCTION__, status);
1986                 return status;
1987         }
1988
1989         /* Start the DMA? */
1990         status = TIWriteCommandSync (dev,
1991                                         UMPC_START_PORT,
1992                                         (u8)(UMPM_UART1_PORT + port_number),
1993                                         0,
1994                                         NULL,
1995                                         0);
1996         if (status) {
1997                 dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __FUNCTION__, status);
1998                 return status;
1999         }
2000
2001         /* Clear TX and RX buffers in UMP */
2002         status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
2003         if (status) {
2004                 dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __FUNCTION__, status);
2005                 return status;
2006         }
2007
2008         /* Read Initial MSR */
2009         status = TIReadVendorRequestSync (dev,
2010                                         UMPC_READ_MSR,  // Request
2011                                         0,              // wValue
2012                                         (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
2013                                         &edge_port->shadow_msr,                 // TransferBuffer
2014                                         1);                                     // TransferBufferLength
2015         if (status) {
2016                 dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __FUNCTION__, status);
2017                 return status;
2018         }
2019
2020         dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
2021
2022         /* Set Initial MCR */
2023         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
2024         dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
2025
2026         edge_serial = edge_port->edge_serial;
2027         if (down_interruptible(&edge_serial->es_sem))
2028                 return -ERESTARTSYS;
2029         if (edge_serial->num_ports_open == 0) {
2030                 /* we are the first port to be opened, let's post the interrupt urb */
2031                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
2032                 if (!urb) {
2033                         dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __FUNCTION__);
2034                         status = -EINVAL;
2035                         goto up_es_sem;
2036                 }
2037                 urb->complete = edge_interrupt_callback;
2038                 urb->context = edge_serial;
2039                 urb->dev = dev;
2040                 status = usb_submit_urb (urb, GFP_KERNEL);
2041                 if (status) {
2042                         dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2043                         goto up_es_sem;
2044                 }
2045         }
2046
2047         /*
2048          * reset the data toggle on the bulk endpoints to work around bug in
2049          * host controllers where things get out of sync some times
2050          */
2051         usb_clear_halt (dev, port->write_urb->pipe);
2052         usb_clear_halt (dev, port->read_urb->pipe);
2053
2054         /* start up our bulk read urb */
2055         urb = port->read_urb;
2056         if (!urb) {
2057                 dev_err (&port->dev, "%s - no read urb present, exiting\n", __FUNCTION__);
2058                 status = -EINVAL;
2059                 goto unlink_int_urb;
2060         }
2061         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2062         urb->complete = edge_bulk_in_callback;
2063         urb->context = edge_port;
2064         urb->dev = dev;
2065         status = usb_submit_urb (urb, GFP_KERNEL);
2066         if (status) {
2067                 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2068                 goto unlink_int_urb;
2069         }
2070
2071         ++edge_serial->num_ports_open;
2072
2073         dbg("%s - exited", __FUNCTION__);
2074
2075         goto up_es_sem;
2076
2077 unlink_int_urb:
2078         if (edge_port->edge_serial->num_ports_open == 0)
2079                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2080 up_es_sem:
2081         up(&edge_serial->es_sem);
2082         return status;
2083 }
2084
2085 static void edge_close (struct usb_serial_port *port, struct file *filp)
2086 {
2087         struct edgeport_serial *edge_serial;
2088         struct edgeport_port *edge_port;
2089         int port_number;
2090         int status;
2091
2092         dbg("%s - port %d", __FUNCTION__, port->number);
2093
2094         edge_serial = usb_get_serial_data(port->serial);
2095         edge_port = usb_get_serial_port_data(port);
2096         if ((edge_serial == NULL) || (edge_port == NULL))
2097                 return;
2098
2099         /* The bulkreadcompletion routine will check
2100          * this flag and dump add read data */
2101         edge_port->close_pending = 1;
2102
2103         /* chase the port close and flush */
2104         TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
2105
2106         usb_kill_urb(port->read_urb);
2107         usb_kill_urb(port->write_urb);
2108         edge_port->ep_write_urb_in_use = 0;
2109
2110         /* assuming we can still talk to the device,
2111          * send a close port command to it */
2112         dbg("%s - send umpc_close_port", __FUNCTION__);
2113         port_number = port->number - port->serial->minor;
2114         status = TIWriteCommandSync (port->serial->dev,
2115                                      UMPC_CLOSE_PORT,
2116                                      (__u8)(UMPM_UART1_PORT + port_number),
2117                                      0,
2118                                      NULL,
2119                                      0);
2120         down(&edge_serial->es_sem);
2121         --edge_port->edge_serial->num_ports_open;
2122         if (edge_port->edge_serial->num_ports_open <= 0) {
2123                 /* last port is now closed, let's shut down our interrupt urb */
2124                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2125                 edge_port->edge_serial->num_ports_open = 0;
2126         }
2127         up(&edge_serial->es_sem);
2128         edge_port->close_pending = 0;
2129
2130         dbg("%s - exited", __FUNCTION__);
2131 }
2132
2133 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
2134 {
2135         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2136         unsigned long flags;
2137
2138         dbg("%s - port %d", __FUNCTION__, port->number);
2139
2140         if (count == 0) {
2141                 dbg("%s - write request of 0 bytes", __FUNCTION__);
2142                 return 0;
2143         }
2144
2145         if (edge_port == NULL)
2146                 return -ENODEV;
2147         if (edge_port->close_pending == 1)
2148                 return -ENODEV;
2149
2150         spin_lock_irqsave(&edge_port->ep_lock, flags);
2151         count = edge_buf_put(edge_port->ep_out_buf, data, count);
2152         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2153
2154         edge_send(port);
2155
2156         return count;
2157 }
2158
2159 static void edge_send(struct usb_serial_port *port)
2160 {
2161         int count, result;
2162         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2163         struct tty_struct *tty = port->tty;
2164         unsigned long flags;
2165
2166
2167         dbg("%s - port %d", __FUNCTION__, port->number);
2168
2169         spin_lock_irqsave(&edge_port->ep_lock, flags);
2170
2171         if (edge_port->ep_write_urb_in_use) {
2172                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2173                 return;
2174         }
2175
2176         count = edge_buf_get(edge_port->ep_out_buf,
2177                                 port->write_urb->transfer_buffer,
2178                                 port->bulk_out_size);
2179
2180         if (count == 0) {
2181                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2182                 return;
2183         }
2184
2185         edge_port->ep_write_urb_in_use = 1;
2186
2187         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2188
2189         usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, port->write_urb->transfer_buffer);
2190
2191         /* set up our urb */
2192         usb_fill_bulk_urb (port->write_urb, port->serial->dev,
2193                            usb_sndbulkpipe (port->serial->dev,
2194                                             port->bulk_out_endpointAddress),
2195                            port->write_urb->transfer_buffer, count,
2196                            edge_bulk_out_callback,
2197                            port);
2198
2199         /* send the data out the bulk port */
2200         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2201         if (result) {
2202                 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __FUNCTION__, result);
2203                 edge_port->ep_write_urb_in_use = 0;
2204                 // TODO: reschedule edge_send
2205         } else {
2206                 edge_port->icount.tx += count;
2207         }
2208
2209         /* wakeup any process waiting for writes to complete */
2210         /* there is now more room in the buffer for new writes */
2211         if (tty) {
2212                 /* let the tty driver wakeup if it has a special write_wakeup function */
2213                 tty_wakeup(tty);
2214         }
2215 }
2216
2217 static int edge_write_room (struct usb_serial_port *port)
2218 {
2219         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2220         int room = 0;
2221         unsigned long flags;
2222
2223         dbg("%s - port %d", __FUNCTION__, port->number);
2224
2225         if (edge_port == NULL)
2226                 return -ENODEV;
2227         if (edge_port->close_pending == 1)
2228                 return -ENODEV;
2229
2230         spin_lock_irqsave(&edge_port->ep_lock, flags);
2231         room = edge_buf_space_avail(edge_port->ep_out_buf);
2232         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2233
2234         dbg("%s - returns %d", __FUNCTION__, room);
2235         return room;
2236 }
2237
2238 static int edge_chars_in_buffer (struct usb_serial_port *port)
2239 {
2240         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2241         int chars = 0;
2242         unsigned long flags;
2243
2244         dbg("%s - port %d", __FUNCTION__, port->number);
2245
2246         if (edge_port == NULL)
2247                 return -ENODEV;
2248         if (edge_port->close_pending == 1)
2249                 return -ENODEV;
2250
2251         spin_lock_irqsave(&edge_port->ep_lock, flags);
2252         chars = edge_buf_data_avail(edge_port->ep_out_buf);
2253         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2254
2255         dbg ("%s - returns %d", __FUNCTION__, chars);
2256         return chars;
2257 }
2258
2259 static void edge_throttle (struct usb_serial_port *port)
2260 {
2261         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2262         struct tty_struct *tty;
2263         int status;
2264
2265         dbg("%s - port %d", __FUNCTION__, port->number);
2266
2267         if (edge_port == NULL)
2268                 return;
2269
2270         tty = port->tty;
2271         if (!tty) {
2272                 dbg ("%s - no tty available", __FUNCTION__);
2273                 return;
2274         }
2275
2276         /* if we are implementing XON/XOFF, send the stop character */
2277         if (I_IXOFF(tty)) {
2278                 unsigned char stop_char = STOP_CHAR(tty);
2279                 status = edge_write (port, &stop_char, 1);
2280                 if (status <= 0) {
2281                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __FUNCTION__, status);
2282                 }
2283         }
2284
2285         /* if we are implementing RTS/CTS, stop reads */
2286         /* and the Edgeport will clear the RTS line */
2287         if (C_CRTSCTS(tty))
2288                 stop_read(edge_port);
2289
2290 }
2291
2292 static void edge_unthrottle (struct usb_serial_port *port)
2293 {
2294         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2295         struct tty_struct *tty;
2296         int status;
2297
2298         dbg("%s - port %d", __FUNCTION__, port->number);
2299
2300         if (edge_port == NULL)
2301                 return;
2302
2303         tty = port->tty;
2304         if (!tty) {
2305                 dbg ("%s - no tty available", __FUNCTION__);
2306                 return;
2307         }
2308
2309         /* if we are implementing XON/XOFF, send the start character */
2310         if (I_IXOFF(tty)) {
2311                 unsigned char start_char = START_CHAR(tty);
2312                 status = edge_write (port, &start_char, 1);
2313                 if (status <= 0) {
2314                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __FUNCTION__, status);
2315                 }
2316         }
2317
2318         /* if we are implementing RTS/CTS, restart reads */
2319         /* are the Edgeport will assert the RTS line */
2320         if (C_CRTSCTS(tty)) {
2321                 status = restart_read(edge_port);
2322                 if (status)
2323                         dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __FUNCTION__, status);
2324         }
2325
2326 }
2327
2328 static void stop_read(struct edgeport_port *edge_port)
2329 {
2330         unsigned long flags;
2331
2332         spin_lock_irqsave(&edge_port->ep_lock, flags);
2333
2334         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2335                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2336         edge_port->shadow_mcr &= ~MCR_RTS;
2337
2338         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2339 }
2340
2341 static int restart_read(struct edgeport_port *edge_port)
2342 {
2343         struct urb *urb;
2344         int status = 0;
2345         unsigned long flags;
2346
2347         spin_lock_irqsave(&edge_port->ep_lock, flags);
2348
2349         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2350                 urb = edge_port->port->read_urb;
2351                 urb->complete = edge_bulk_in_callback;
2352                 urb->context = edge_port;
2353                 urb->dev = edge_port->port->serial->dev;
2354                 status = usb_submit_urb(urb, GFP_KERNEL);
2355         }
2356         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2357         edge_port->shadow_mcr |= MCR_RTS;
2358
2359         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2360
2361         return status;
2362 }
2363
2364 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)
2365 {
2366         struct ump_uart_config *config;
2367         struct tty_struct *tty;
2368         int baud;
2369         unsigned cflag;
2370         int status;
2371         int port_number = edge_port->port->number - edge_port->port->serial->minor;
2372
2373         dbg("%s - port %d", __FUNCTION__, edge_port->port->number);
2374
2375         tty = edge_port->port->tty;
2376         if ((!tty) ||
2377             (!tty->termios)) {
2378                 dbg("%s - no tty structures", __FUNCTION__);
2379                 return;
2380         }
2381
2382         config = kmalloc (sizeof (*config), GFP_KERNEL);
2383         if (!config) {
2384                 dev_err (&edge_port->port->dev, "%s - out of memory\n", __FUNCTION__);
2385                 return;
2386         }
2387
2388         cflag = tty->termios->c_cflag;
2389
2390         config->wFlags = 0;
2391
2392         /* These flags must be set */
2393         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2394         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2395         config->bUartMode = (__u8)(edge_port->bUartMode);
2396
2397         switch (cflag & CSIZE) {
2398                 case CS5:
2399                             config->bDataBits = UMP_UART_CHAR5BITS;
2400                             dbg ("%s - data bits = 5", __FUNCTION__);
2401                             break;
2402                 case CS6:
2403                             config->bDataBits = UMP_UART_CHAR6BITS;
2404                             dbg ("%s - data bits = 6", __FUNCTION__);
2405                             break;
2406                 case CS7:
2407                             config->bDataBits = UMP_UART_CHAR7BITS;
2408                             dbg ("%s - data bits = 7", __FUNCTION__);
2409                             break;
2410                 default:
2411                 case CS8:
2412                             config->bDataBits = UMP_UART_CHAR8BITS;
2413                             dbg ("%s - data bits = 8", __FUNCTION__);
2414                             break;
2415         }
2416
2417         if (cflag & PARENB) {
2418                 if (cflag & PARODD) {
2419                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2420                         config->bParity = UMP_UART_ODDPARITY;
2421                         dbg("%s - parity = odd", __FUNCTION__);
2422                 } else {
2423                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2424                         config->bParity = UMP_UART_EVENPARITY;
2425                         dbg("%s - parity = even", __FUNCTION__);
2426                 }
2427         } else {
2428                 config->bParity = UMP_UART_NOPARITY;
2429                 dbg("%s - parity = none", __FUNCTION__);
2430         }
2431
2432         if (cflag & CSTOPB) {
2433                 config->bStopBits = UMP_UART_STOPBIT2;
2434                 dbg("%s - stop bits = 2", __FUNCTION__);
2435         } else {
2436                 config->bStopBits = UMP_UART_STOPBIT1;
2437                 dbg("%s - stop bits = 1", __FUNCTION__);
2438         }
2439
2440         /* figure out the flow control settings */
2441         if (cflag & CRTSCTS) {
2442                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2443                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2444                 dbg("%s - RTS/CTS is enabled", __FUNCTION__);
2445         } else {
2446                 dbg("%s - RTS/CTS is disabled", __FUNCTION__);
2447                 tty->hw_stopped = 0;
2448                 restart_read(edge_port);
2449         }
2450
2451         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2452         if (I_IXOFF(tty) || I_IXON(tty)) {
2453                 config->cXon  = START_CHAR(tty);
2454                 config->cXoff = STOP_CHAR(tty);
2455
2456                 /* if we are implementing INBOUND XON/XOFF */
2457                 if (I_IXOFF(tty)) {
2458                         config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2459                         dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2460                              __FUNCTION__, config->cXon, config->cXoff);
2461                 } else {
2462                         dbg ("%s - INBOUND XON/XOFF is disabled", __FUNCTION__);
2463                 }
2464
2465                 /* if we are implementing OUTBOUND XON/XOFF */
2466                 if (I_IXON(tty)) {
2467                         config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2468                         dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2469                              __FUNCTION__, config->cXon, config->cXoff);
2470                 } else {
2471                         dbg ("%s - OUTBOUND XON/XOFF is disabled", __FUNCTION__);
2472                 }
2473         }
2474
2475         /* Round the baud rate */
2476         baud = tty_get_baud_rate(tty);
2477         if (!baud) {
2478                 /* pick a default, any default... */
2479                 baud = 9600;
2480         }
2481         edge_port->baud_rate = baud;
2482         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2483
2484         dbg ("%s - baud rate = %d, wBaudRate = %d", __FUNCTION__, baud, config->wBaudRate);
2485
2486         dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2487         dbg ("wFlags:    0x%x", config->wFlags);
2488         dbg ("bDataBits:   %d", config->bDataBits);
2489         dbg ("bParity:     %d", config->bParity);
2490         dbg ("bStopBits:   %d", config->bStopBits);
2491         dbg ("cXon:        %d", config->cXon);
2492         dbg ("cXoff:       %d", config->cXoff);
2493         dbg ("bUartMode:   %d", config->bUartMode);
2494
2495         /* move the word values into big endian mode */
2496         cpu_to_be16s (&config->wFlags);
2497         cpu_to_be16s (&config->wBaudRate);
2498
2499         status = TIWriteCommandSync (edge_port->port->serial->dev,
2500                                 UMPC_SET_CONFIG,
2501                                 (__u8)(UMPM_UART1_PORT + port_number),
2502                                 0,
2503                                 (__u8 *)config,
2504                                 sizeof(*config));
2505         if (status) {
2506                 dbg ("%s - error %d when trying to write config to device",
2507                      __FUNCTION__, status);
2508         }
2509
2510         kfree (config);
2511
2512         return;
2513 }
2514
2515 static void edge_set_termios (struct usb_serial_port *port, struct termios *old_termios)
2516 {
2517         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2518         struct tty_struct *tty = port->tty;
2519         unsigned int cflag;
2520
2521         if (!port->tty || !port->tty->termios) {
2522                 dbg ("%s - no tty or termios", __FUNCTION__);
2523                 return;
2524         }
2525
2526         cflag = tty->termios->c_cflag;
2527         /* check that they really want us to change something */
2528         if (old_termios) {
2529                 if (cflag == old_termios->c_cflag &&
2530                     tty->termios->c_iflag == old_termios->c_iflag) {
2531                         dbg ("%s - nothing to change", __FUNCTION__);
2532                         return;
2533                 }
2534         }
2535
2536         dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
2537             tty->termios->c_cflag, tty->termios->c_iflag);
2538         if (old_termios) {
2539                 dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
2540                     old_termios->c_cflag, old_termios->c_iflag);
2541         }
2542
2543         dbg("%s - port %d", __FUNCTION__, port->number);
2544
2545         if (edge_port == NULL)
2546                 return;
2547
2548         /* change the port settings to the new ones specified */
2549         change_port_settings (edge_port, old_termios);
2550
2551         return;
2552 }
2553
2554 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2555 {
2556         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2557         unsigned int mcr;
2558
2559         dbg("%s - port %d", __FUNCTION__, port->number);
2560
2561         mcr = edge_port->shadow_mcr;
2562         if (set & TIOCM_RTS)
2563                 mcr |= MCR_RTS;
2564         if (set & TIOCM_DTR)
2565                 mcr |= MCR_DTR;
2566         if (set & TIOCM_LOOP)
2567                 mcr |= MCR_LOOPBACK;
2568
2569         if (clear & TIOCM_RTS)
2570                 mcr &= ~MCR_RTS;
2571         if (clear & TIOCM_DTR)
2572                 mcr &= ~MCR_DTR;
2573         if (clear & TIOCM_LOOP)
2574                 mcr &= ~MCR_LOOPBACK;
2575
2576         edge_port->shadow_mcr = mcr;
2577
2578         TIRestoreMCR (edge_port, mcr);
2579
2580         return 0;
2581 }
2582
2583 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2584 {
2585         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2586         unsigned int result = 0;
2587         unsigned int msr;
2588         unsigned int mcr;
2589
2590         dbg("%s - port %d", __FUNCTION__, port->number);
2591
2592         msr = edge_port->shadow_msr;
2593         mcr = edge_port->shadow_mcr;
2594         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2595                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2596                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2597                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2598                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2599                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2600
2601
2602         dbg("%s -- %x", __FUNCTION__, result);
2603
2604         return result;
2605 }
2606
2607 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
2608 {
2609         struct serial_struct tmp;
2610
2611         if (!retinfo)
2612                 return -EFAULT;
2613
2614         memset(&tmp, 0, sizeof(tmp));
2615
2616         tmp.type                = PORT_16550A;
2617         tmp.line                = edge_port->port->serial->minor;
2618         tmp.port                = edge_port->port->number;
2619         tmp.irq                 = 0;
2620         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2621         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2622         tmp.baud_base           = 9600;
2623         tmp.close_delay         = 5*HZ;
2624         tmp.closing_wait        = closing_wait;
2625 //      tmp.custom_divisor      = state->custom_divisor;
2626 //      tmp.hub6                = state->hub6;
2627 //      tmp.io_type             = state->io_type;
2628
2629
2630         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2631                 return -EFAULT;
2632         return 0;
2633 }
2634
2635 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2636 {
2637         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2638         struct async_icount cnow;
2639         struct async_icount cprev;
2640
2641         dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
2642
2643         switch (cmd) {
2644                 case TIOCINQ:
2645                         dbg("%s - (%d) TIOCINQ", __FUNCTION__, port->number);
2646 //                      return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2647                         break;
2648
2649                 case TIOCSERGETLSR:
2650                         dbg("%s - (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
2651 //                      return get_lsr_info(edge_port, (unsigned int *) arg);
2652                         break;
2653
2654                 case TIOCGSERIAL:
2655                         dbg("%s - (%d) TIOCGSERIAL", __FUNCTION__, port->number);
2656                         return get_serial_info(edge_port, (struct serial_struct __user *) arg);
2657                         break;
2658
2659                 case TIOCSSERIAL:
2660                         dbg("%s - (%d) TIOCSSERIAL", __FUNCTION__, port->number);
2661                         break;
2662
2663                 case TIOCMIWAIT:
2664                         dbg("%s - (%d) TIOCMIWAIT", __FUNCTION__, port->number);
2665                         cprev = edge_port->icount;
2666                         while (1) {
2667                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
2668                                 /* see if a signal did it */
2669                                 if (signal_pending(current))
2670                                         return -ERESTARTSYS;
2671                                 cnow = edge_port->icount;
2672                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2673                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2674                                         return -EIO; /* no change => error */
2675                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2676                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2677                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2678                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2679                                         return 0;
2680                                 }
2681                                 cprev = cnow;
2682                         }
2683                         /* not reached */
2684                         break;
2685
2686                 case TIOCGICOUNT:
2687                         dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __FUNCTION__,
2688                              port->number, edge_port->icount.rx, edge_port->icount.tx);
2689                         if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2690                                 return -EFAULT;
2691                         return 0;
2692         }
2693
2694         return -ENOIOCTLCMD;
2695 }
2696
2697 static void edge_break (struct usb_serial_port *port, int break_state)
2698 {
2699         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2700         int status;
2701
2702         dbg ("%s - state = %d", __FUNCTION__, break_state);
2703
2704         /* chase the port close */
2705         TIChasePort (edge_port, 0, 0);
2706
2707         if (break_state == -1) {
2708                 status = TISetBreak (edge_port);
2709         } else {
2710                 status = TIClearBreak (edge_port);
2711         }
2712         if (status) {
2713                 dbg ("%s - error %d sending break set/clear command.",
2714                      __FUNCTION__, status);
2715         }
2716 }
2717
2718 static int edge_startup (struct usb_serial *serial)
2719 {
2720         struct edgeport_serial *edge_serial;
2721         struct edgeport_port *edge_port;
2722         struct usb_device *dev;
2723         int status;
2724         int i;
2725
2726         dev = serial->dev;
2727
2728         /* create our private serial structure */
2729         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2730         if (edge_serial == NULL) {
2731                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2732                 return -ENOMEM;
2733         }
2734         sema_init(&edge_serial->es_sem, 1);
2735         edge_serial->serial = serial;
2736         usb_set_serial_data(serial, edge_serial);
2737
2738         status = TIDownloadFirmware (edge_serial);
2739         if (status) {
2740                 kfree (edge_serial);
2741                 return status;
2742         }
2743
2744         /* set up our port private structures */
2745         for (i = 0; i < serial->num_ports; ++i) {
2746                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2747                 if (edge_port == NULL) {
2748                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2749                         goto cleanup;
2750                 }
2751                 spin_lock_init(&edge_port->ep_lock);
2752                 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2753                 if (edge_port->ep_out_buf == NULL) {
2754                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __FUNCTION__);
2755                         kfree(edge_port);
2756                         goto cleanup;
2757                 }
2758                 edge_port->port = serial->port[i];
2759                 edge_port->edge_serial = edge_serial;
2760                 usb_set_serial_port_data(serial->port[i], edge_port);
2761                 edge_port->bUartMode = 0;       /* Default is RS232 */
2762         }
2763
2764         return 0;
2765
2766 cleanup:
2767         for (--i; i>=0; --i) {
2768                 edge_port = usb_get_serial_port_data(serial->port[i]);
2769                 edge_buf_free(edge_port->ep_out_buf);
2770                 kfree(edge_port);
2771                 usb_set_serial_port_data(serial->port[i], NULL);
2772         }
2773         kfree (edge_serial);
2774         usb_set_serial_data(serial, NULL);
2775         return -ENOMEM;
2776 }
2777
2778 static void edge_shutdown (struct usb_serial *serial)
2779 {
2780         int i;
2781         struct edgeport_port *edge_port;
2782
2783         dbg ("%s", __FUNCTION__);
2784
2785         for (i=0; i < serial->num_ports; ++i) {
2786                 edge_port = usb_get_serial_port_data(serial->port[i]);
2787                 if (edge_port) {
2788                         edge_buf_free(edge_port->ep_out_buf);
2789                         kfree(edge_port);
2790                 }
2791                 usb_set_serial_port_data(serial->port[i], NULL);
2792         }
2793         kfree (usb_get_serial_data(serial));
2794         usb_set_serial_data(serial, NULL);
2795 }
2796
2797
2798 /* Circular Buffer */
2799
2800 /*
2801  * edge_buf_alloc
2802  *
2803  * Allocate a circular buffer and all associated memory.
2804  */
2805
2806 static struct edge_buf *edge_buf_alloc(unsigned int size)
2807 {
2808         struct edge_buf *eb;
2809
2810
2811         if (size == 0)
2812                 return NULL;
2813
2814         eb = (struct edge_buf *)kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2815         if (eb == NULL)
2816                 return NULL;
2817
2818         eb->buf_buf = kmalloc(size, GFP_KERNEL);
2819         if (eb->buf_buf == NULL) {
2820                 kfree(eb);
2821                 return NULL;
2822         }
2823
2824         eb->buf_size = size;
2825         eb->buf_get = eb->buf_put = eb->buf_buf;
2826
2827         return eb;
2828 }
2829
2830
2831 /*
2832  * edge_buf_free
2833  *
2834  * Free the buffer and all associated memory.
2835  */
2836
2837 static void edge_buf_free(struct edge_buf *eb)
2838 {
2839         if (eb) {
2840                 kfree(eb->buf_buf);
2841                 kfree(eb);
2842         }
2843 }
2844
2845
2846 /*
2847  * edge_buf_clear
2848  *
2849  * Clear out all data in the circular buffer.
2850  */
2851
2852 static void edge_buf_clear(struct edge_buf *eb)
2853 {
2854         if (eb != NULL)
2855                 eb->buf_get = eb->buf_put;
2856                 /* equivalent to a get of all data available */
2857 }
2858
2859
2860 /*
2861  * edge_buf_data_avail
2862  *
2863  * Return the number of bytes of data available in the circular
2864  * buffer.
2865  */
2866
2867 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2868 {
2869         if (eb != NULL)
2870                 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2871         else
2872                 return 0;
2873 }
2874
2875
2876 /*
2877  * edge_buf_space_avail
2878  *
2879  * Return the number of bytes of space available in the circular
2880  * buffer.
2881  */
2882
2883 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2884 {
2885         if (eb != NULL)
2886                 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2887         else
2888                 return 0;
2889 }
2890
2891
2892 /*
2893  * edge_buf_put
2894  *
2895  * Copy data data from a user buffer and put it into the circular buffer.
2896  * Restrict to the amount of space available.
2897  *
2898  * Return the number of bytes copied.
2899  */
2900
2901 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2902         unsigned int count)
2903 {
2904         unsigned int len;
2905
2906
2907         if (eb == NULL)
2908                 return 0;
2909
2910         len  = edge_buf_space_avail(eb);
2911         if (count > len)
2912                 count = len;
2913
2914         if (count == 0)
2915                 return 0;
2916
2917         len = eb->buf_buf + eb->buf_size - eb->buf_put;
2918         if (count > len) {
2919                 memcpy(eb->buf_put, buf, len);
2920                 memcpy(eb->buf_buf, buf+len, count - len);
2921                 eb->buf_put = eb->buf_buf + count - len;
2922         } else {
2923                 memcpy(eb->buf_put, buf, count);
2924                 if (count < len)
2925                         eb->buf_put += count;
2926                 else /* count == len */
2927                         eb->buf_put = eb->buf_buf;
2928         }
2929
2930         return count;
2931 }
2932
2933
2934 /*
2935  * edge_buf_get
2936  *
2937  * Get data from the circular buffer and copy to the given buffer.
2938  * Restrict to the amount of data available.
2939  *
2940  * Return the number of bytes copied.
2941  */
2942
2943 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2944         unsigned int count)
2945 {
2946         unsigned int len;
2947
2948
2949         if (eb == NULL)
2950                 return 0;
2951
2952         len = edge_buf_data_avail(eb);
2953         if (count > len)
2954                 count = len;
2955
2956         if (count == 0)
2957                 return 0;
2958
2959         len = eb->buf_buf + eb->buf_size - eb->buf_get;
2960         if (count > len) {
2961                 memcpy(buf, eb->buf_get, len);
2962                 memcpy(buf+len, eb->buf_buf, count - len);
2963                 eb->buf_get = eb->buf_buf + count - len;
2964         } else {
2965                 memcpy(buf, eb->buf_get, count);
2966                 if (count < len)
2967                         eb->buf_get += count;
2968                 else /* count == len */
2969                         eb->buf_get = eb->buf_buf;
2970         }
2971
2972         return count;
2973 }
2974
2975
2976 static struct usb_serial_driver edgeport_1port_device = {
2977         .driver = {
2978                 .owner          = THIS_MODULE,
2979                 .name           = "edgeport_ti_1",
2980         },
2981         .description            = "Edgeport TI 1 port adapter",
2982         .id_table               = edgeport_1port_id_table,
2983         .num_interrupt_in       = 1,
2984         .num_bulk_in            = 1,
2985         .num_bulk_out           = 1,
2986         .num_ports              = 1,
2987         .open                   = edge_open,
2988         .close                  = edge_close,
2989         .throttle               = edge_throttle,
2990         .unthrottle             = edge_unthrottle,
2991         .attach                 = edge_startup,
2992         .shutdown               = edge_shutdown,
2993         .ioctl                  = edge_ioctl,
2994         .set_termios            = edge_set_termios,
2995         .tiocmget               = edge_tiocmget,
2996         .tiocmset               = edge_tiocmset,
2997         .write                  = edge_write,
2998         .write_room             = edge_write_room,
2999         .chars_in_buffer        = edge_chars_in_buffer,
3000         .break_ctl              = edge_break,
3001         .read_int_callback      = edge_interrupt_callback,
3002         .read_bulk_callback     = edge_bulk_in_callback,
3003         .write_bulk_callback    = edge_bulk_out_callback,
3004 };
3005
3006 static struct usb_serial_driver edgeport_2port_device = {
3007         .driver = {
3008                 .owner          = THIS_MODULE,
3009                 .name           = "edgeport_ti_2",
3010         },
3011         .description            = "Edgeport TI 2 port adapter",
3012         .id_table               = edgeport_2port_id_table,
3013         .num_interrupt_in       = 1,
3014         .num_bulk_in            = 2,
3015         .num_bulk_out           = 2,
3016         .num_ports              = 2,
3017         .open                   = edge_open,
3018         .close                  = edge_close,
3019         .throttle               = edge_throttle,
3020         .unthrottle             = edge_unthrottle,
3021         .attach                 = edge_startup,
3022         .shutdown               = edge_shutdown,
3023         .ioctl                  = edge_ioctl,
3024         .set_termios            = edge_set_termios,
3025         .tiocmget               = edge_tiocmget,
3026         .tiocmset               = edge_tiocmset,
3027         .write                  = edge_write,
3028         .write_room             = edge_write_room,
3029         .chars_in_buffer        = edge_chars_in_buffer,
3030         .break_ctl              = edge_break,
3031         .read_int_callback      = edge_interrupt_callback,
3032         .read_bulk_callback     = edge_bulk_in_callback,
3033         .write_bulk_callback    = edge_bulk_out_callback,
3034 };
3035
3036
3037 static int __init edgeport_init(void)
3038 {
3039         int retval;
3040         retval = usb_serial_register(&edgeport_1port_device);
3041         if (retval)
3042                 goto failed_1port_device_register;
3043         retval = usb_serial_register(&edgeport_2port_device);
3044         if (retval)
3045                 goto failed_2port_device_register;
3046         retval = usb_register(&io_driver);
3047         if (retval)
3048                 goto failed_usb_register;
3049         info(DRIVER_DESC " " DRIVER_VERSION);
3050         return 0;
3051 failed_usb_register:
3052         usb_serial_deregister(&edgeport_2port_device);
3053 failed_2port_device_register:
3054         usb_serial_deregister(&edgeport_1port_device);
3055 failed_1port_device_register:
3056         return retval;
3057 }
3058
3059 static void __exit edgeport_exit (void)
3060 {
3061         usb_deregister (&io_driver);
3062         usb_serial_deregister (&edgeport_1port_device);
3063         usb_serial_deregister (&edgeport_2port_device);
3064 }
3065
3066 module_init(edgeport_init);
3067 module_exit(edgeport_exit);
3068
3069 /* Module information */
3070 MODULE_AUTHOR(DRIVER_AUTHOR);
3071 MODULE_DESCRIPTION(DRIVER_DESC);
3072 MODULE_LICENSE("GPL");
3073
3074 module_param(debug, bool, S_IRUGO | S_IWUSR);
3075 MODULE_PARM_DESC(debug, "Debug enabled or not");
3076
3077 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3078 MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
3079
3080 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3081 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3082
3083 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3084 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
3085