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
  20 #include <linux/kernel.h>
  21 #include <linux/jiffies.h>
  22 #include <linux/errno.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/tty.h>
  26 #include <linux/tty_driver.h>
  27 #include <linux/tty_flip.h>
  28 #include <linux/module.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/mutex.h>
  31 #include <linux/serial.h>
  32 #include <linux/kfifo.h>
  33 #include <linux/ioctl.h>
  34 #include <linux/firmware.h>
  35 #include <linux/uaccess.h>
  36 #include <linux/usb.h>
  37 #include <linux/usb/serial.h>
  38
  39 #include "io_16654.h"
  40 #include "io_usbvend.h"
  41 #include "io_ti.h"
  42
  43 /*
  44  * Version Information
  45  */
  46 #define DRIVER_VERSION "v0.7mode043006"
  47 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  48 #define DRIVER_DESC "Edgeport USB Serial Driver"
  49
  50 #define EPROM_PAGE_SIZE         64
  51
  52
  53 /* different hardware types */
  54 #define HARDWARE_TYPE_930       0
  55 #define HARDWARE_TYPE_TIUMP     1
  56
  57 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
  58 #define TI_MODE_CONFIGURING     0   /* Device has not entered start device */
  59 #define TI_MODE_BOOT            1   /* Staying in boot mode                */
  60 #define TI_MODE_DOWNLOAD        2   /* Made it to download mode            */
  61 #define TI_MODE_TRANSITIONING   3   /* Currently in boot mode but
  62                                        transitioning to download mode      */
  63
  64 /* read urb state */
  65 #define EDGE_READ_URB_RUNNING   0
  66 #define EDGE_READ_URB_STOPPING  1
  67 #define EDGE_READ_URB_STOPPED   2
  68
  69 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
  70
  71 #define EDGE_OUT_BUF_SIZE       1024
  72
  73
  74 /* Product information read from the Edgeport */
  75 struct product_info {
  76         int     TiMode;                 /* Current TI Mode  */
  77         __u8    hardware_type;          /* Type of hardware */
  78 } __attribute__((packed));
  79
  80 struct edgeport_port {
  81         __u16 uart_base;
  82         __u16 dma_address;
  83         __u8 shadow_msr;
  84         __u8 shadow_mcr;
  85         __u8 shadow_lsr;
  86         __u8 lsr_mask;
  87         __u32 ump_read_timeout;         /* Number of milliseconds the UMP will
  88                                            wait without data before completing
  89                                            a read short */
  90         int baud_rate;
  91         int close_pending;
  92         int lsr_event;
  93         struct async_icount     icount;
  94         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
  95                                                    waiting for msr change to
  96                                                    happen */
  97         struct edgeport_serial  *edge_serial;
  98         struct usb_serial_port  *port;
  99         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
 100         spinlock_t ep_lock;
 101         int ep_read_urb_state;
 102         int ep_write_urb_in_use;
 103         struct kfifo write_fifo;
 104 };
 105
 106 struct edgeport_serial {
 107         struct product_info product_info;
 108         u8 TI_I2C_Type;                 /* Type of I2C in UMP */
 109         u8 TiReadI2C;                   /* Set to TRUE if we have read the
 110                                            I2c in Boot Mode */
 111         struct mutex es_lock;
 112         int num_ports_open;
 113         struct usb_serial *serial;
 114 };
 115
 116
 117 /* Devices that this driver supports */
 118 static const struct usb_device_id edgeport_1port_id_table[] = {
 119         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 120         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 121         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 122         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 123         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 124         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 125         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 126         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 127         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 128         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 132         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 133         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 134         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 135         { }
 136 };
 137
 138 static const struct usb_device_id edgeport_2port_id_table[] = {
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 141         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 142         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 143         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 151         /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 157         { }
 158 };
 159
 160 /* Devices that this driver supports */
 161 static const struct usb_device_id id_table_combined[] = {
 162         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 163         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 170         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 176         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 177         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 178         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 179         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 180         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 181         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 182         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 183         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 184         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 185         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 186         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 187         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 188         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 189         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 190         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 191         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 192         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 193         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 194         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 195         { }
 196 };
 197
 198 MODULE_DEVICE_TABLE(usb, id_table_combined);
 199
 200 static unsigned char OperationalMajorVersion;
 201 static unsigned char OperationalMinorVersion;
 202 static unsigned short OperationalBuildNumber;
 203
 204 static bool debug;
 205
 206 static int closing_wait = EDGE_CLOSING_WAIT;
 207 static bool ignore_cpu_rev;
 208 static int default_uart_mode;           /* RS232 */
 209
 210 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
 211                           unsigned char *data, int length);
 212
 213 static void stop_read(struct edgeport_port *edge_port);
 214 static int restart_read(struct edgeport_port *edge_port);
 215
 216 static void edge_set_termios(struct tty_struct *tty,
 217                 struct usb_serial_port *port, struct ktermios *old_termios);
 218 static void edge_send(struct tty_struct *tty);
 219
 220 /* sysfs attributes */
 221 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
 222 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
 223
 224
 225 static int ti_vread_sync(struct usb_device *dev, __u8 request,
 226                                 __u16 value, __u16 index, u8 *data, int size)
 227 {
 228         int status;
 229
 230         status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
 231                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
 232                         value, index, data, size, 1000);
 233         if (status < 0)
 234                 return status;
 235         if (status != size) {
 236                 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
 237                         __func__, size, status);
 238                 return -ECOMM;
 239         }
 240         return 0;
 241 }
 242
 243 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
 244                                 __u16 value, __u16 index, u8 *data, int size)
 245 {
 246         int status;
 247
 248         status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
 249                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
 250                         value, index, data, size, 1000);
 251         if (status < 0)
 252                 return status;
 253         if (status != size) {
 254                 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
 255                         __func__, size, status);
 256                 return -ECOMM;
 257         }
 258         return 0;
 259 }
 260
 261 static int send_cmd(struct usb_device *dev, __u8 command,
 262                                 __u8 moduleid, __u16 value, u8 *data,
 263                                 int size)
 264 {
 265         return ti_vsend_sync(dev, command, value, moduleid, data, size);
 266 }
 267
 268 /* clear tx/rx buffers and fifo in TI UMP */
 269 static int purge_port(struct usb_serial_port *port, __u16 mask)
 270 {
 271         int port_number = port->number - port->serial->minor;
 272
 273         dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
 274
 275         return send_cmd(port->serial->dev,
 276                                         UMPC_PURGE_PORT,
 277                                         (__u8)(UMPM_UART1_PORT + port_number),
 278                                         mask,
 279                                         NULL,
 280                                         0);
 281 }
 282
 283 /**
 284  * read_download_mem - Read edgeport memory from TI chip
 285  * @dev: usb device pointer
 286  * @start_address: Device CPU address at which to read
 287  * @length: Length of above data
 288  * @address_type: Can read both XDATA and I2C
 289  * @buffer: pointer to input data buffer
 290  */
 291 static int read_download_mem(struct usb_device *dev, int start_address,
 292                                 int length, __u8 address_type, __u8 *buffer)
 293 {
 294         int status = 0;
 295         __u8 read_length;
 296         __be16 be_start_address;
 297
 298         dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
 299
 300         /* Read in blocks of 64 bytes
 301          * (TI firmware can't handle more than 64 byte reads)
 302          */
 303         while (length) {
 304                 if (length > 64)
 305                         read_length = 64;
 306                 else
 307                         read_length = (__u8)length;
 308
 309                 if (read_length > 1) {
 310                         dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
 311                 }
 312                 be_start_address = cpu_to_be16(start_address);
 313                 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
 314                                         (__u16)address_type,
 315                                         (__force __u16)be_start_address,
 316                                         buffer, read_length);
 317
 318                 if (status) {
 319                         dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
 320                         return status;
 321                 }
 322
 323                 if (read_length > 1)
 324                         usb_serial_debug_data(debug, &dev->dev, __func__,
 325                                               read_length, buffer);
 326
 327                 /* Update pointers/length */
 328                 start_address += read_length;
 329                 buffer += read_length;
 330                 length -= read_length;
 331         }
 332
 333         return status;
 334 }
 335
 336 static int read_ram(struct usb_device *dev, int start_address,
 337                                                 int length, __u8 *buffer)
 338 {
 339         return read_download_mem(dev, start_address, length,
 340                                         DTK_ADDR_SPACE_XDATA, buffer);
 341 }
 342
 343 /* Read edgeport memory to a given block */
 344 static int read_boot_mem(struct edgeport_serial *serial,
 345                                 int start_address, int length, __u8 *buffer)
 346 {
 347         int status = 0;
 348         int i;
 349
 350         for (i = 0; i < length; i++) {
 351                 status = ti_vread_sync(serial->serial->dev,
 352                                 UMPC_MEMORY_READ, serial->TI_I2C_Type,
 353                                 (__u16)(start_address+i), &buffer[i], 0x01);
 354                 if (status) {
 355                         dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
 356                         return status;
 357                 }
 358         }
 359
 360         dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
 361                 __func__, start_address, length);
 362         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 363                                         __func__, length, buffer);
 364
 365         serial->TiReadI2C = 1;
 366
 367         return status;
 368 }
 369
 370 /* Write given block to TI EPROM memory */
 371 static int write_boot_mem(struct edgeport_serial *serial,
 372                                 int start_address, int length, __u8 *buffer)
 373 {
 374         int status = 0;
 375         int i;
 376         u8 *temp;
 377
 378         /* Must do a read before write */
 379         if (!serial->TiReadI2C) {
 380                 temp = kmalloc(1, GFP_KERNEL);
 381                 if (!temp) {
 382                         dev_err(&serial->serial->dev->dev,
 383                                         "%s - out of memory\n", __func__);
 384                         return -ENOMEM;
 385                 }
 386                 status = read_boot_mem(serial, 0, 1, temp);
 387                 kfree(temp);
 388                 if (status)
 389                         return status;
 390         }
 391
 392         for (i = 0; i < length; ++i) {
 393                 status = ti_vsend_sync(serial->serial->dev,
 394                                 UMPC_MEMORY_WRITE, buffer[i],
 395                                 (__u16)(i + start_address), NULL, 0);
 396                 if (status)
 397                         return status;
 398         }
 399
 400         dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
 401         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 402                                         __func__, length, buffer);
 403
 404         return status;
 405 }
 406
 407
 408 /* Write edgeport I2C memory to TI chip */
 409 static int write_i2c_mem(struct edgeport_serial *serial,
 410                 int start_address, int length, __u8 address_type, __u8 *buffer)
 411 {
 412         struct device *dev = &serial->serial->dev->dev;
 413         int status = 0;
 414         int write_length;
 415         __be16 be_start_address;
 416
 417         /* We can only send a maximum of 1 aligned byte page at a time */
 418
 419         /* calculate the number of bytes left in the first page */
 420         write_length = EPROM_PAGE_SIZE -
 421                                 (start_address & (EPROM_PAGE_SIZE - 1));
 422
 423         if (write_length > length)
 424                 write_length = length;
 425
 426         dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
 427                 __func__, start_address, write_length);
 428         usb_serial_debug_data(debug, dev, __func__, write_length, buffer);
 429
 430         /* Write first page */
 431         be_start_address = cpu_to_be16(start_address);
 432         status = ti_vsend_sync(serial->serial->dev,
 433                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 434                                 (__force __u16)be_start_address,
 435                                 buffer, write_length);
 436         if (status) {
 437                 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
 438                 return status;
 439         }
 440
 441         length          -= write_length;
 442         start_address   += write_length;
 443         buffer          += write_length;
 444
 445         /* We should be aligned now -- can write
 446            max page size bytes at a time */
 447         while (length) {
 448                 if (length > EPROM_PAGE_SIZE)
 449                         write_length = EPROM_PAGE_SIZE;
 450                 else
 451                         write_length = length;
 452
 453                 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
 454                         __func__, start_address, write_length);
 455                 usb_serial_debug_data(debug, dev, __func__, write_length, buffer);
 456
 457                 /* Write next page */
 458                 be_start_address = cpu_to_be16(start_address);
 459                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 460                                 (__u16)address_type,
 461                                 (__force __u16)be_start_address,
 462                                 buffer, write_length);
 463                 if (status) {
 464                         dev_err(dev, "%s - ERROR %d\n", __func__, status);
 465                         return status;
 466                 }
 467
 468                 length          -= write_length;
 469                 start_address   += write_length;
 470                 buffer          += write_length;
 471         }
 472         return status;
 473 }
 474
 475 /* Examine the UMP DMA registers and LSR
 476  *
 477  * Check the MSBit of the X and Y DMA byte count registers.
 478  * A zero in this bit indicates that the TX DMA buffers are empty
 479  * then check the TX Empty bit in the UART.
 480  */
 481 static int tx_active(struct edgeport_port *port)
 482 {
 483         int status;
 484         struct out_endpoint_desc_block *oedb;
 485         __u8 *lsr;
 486         int bytes_left = 0;
 487
 488         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 489         if (!oedb) {
 490                 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
 491                 return -ENOMEM;
 492         }
 493
 494         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 495                                            as not all platforms can do DMA
 496                                            from stack */
 497         if (!lsr) {
 498                 kfree(oedb);
 499                 return -ENOMEM;
 500         }
 501         /* Read the DMA Count Registers */
 502         status = read_ram(port->port->serial->dev, port->dma_address,
 503                                                 sizeof(*oedb), (void *)oedb);
 504         if (status)
 505                 goto exit_is_tx_active;
 506
 507         dev_dbg(&port->port->dev, "%s - XByteCount    0x%X\n", __func__, oedb->XByteCount);
 508
 509         /* and the LSR */
 510         status = read_ram(port->port->serial->dev,
 511                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 512
 513         if (status)
 514                 goto exit_is_tx_active;
 515         dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
 516
 517         /* If either buffer has data or we are transmitting then return TRUE */
 518         if ((oedb->XByteCount & 0x80) != 0)
 519                 bytes_left += 64;
 520
 521         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 522                 bytes_left += 1;
 523
 524         /* We return Not Active if we get any kind of error */
 525 exit_is_tx_active:
 526         dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
 527
 528         kfree(lsr);
 529         kfree(oedb);
 530         return bytes_left;
 531 }
 532
 533 static void chase_port(struct edgeport_port *port, unsigned long timeout,
 534                                                                 int flush)
 535 {
 536         int baud_rate;
 537         struct tty_struct *tty = tty_port_tty_get(&port->port->port);
 538         struct usb_serial *serial = port->port->serial;
 539         wait_queue_t wait;
 540         unsigned long flags;
 541
 542         if (!timeout)
 543                 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
 544
 545         /* wait for data to drain from the buffer */
 546         spin_lock_irqsave(&port->ep_lock, flags);
 547         init_waitqueue_entry(&wait, current);
 548         add_wait_queue(&tty->write_wait, &wait);
 549         for (;;) {
 550                 set_current_state(TASK_INTERRUPTIBLE);
 551                 if (kfifo_len(&port->write_fifo) == 0
 552                 || timeout == 0 || signal_pending(current)
 553                 || serial->disconnected)
 554                         /* disconnect */
 555                         break;
 556                 spin_unlock_irqrestore(&port->ep_lock, flags);
 557                 timeout = schedule_timeout(timeout);
 558                 spin_lock_irqsave(&port->ep_lock, flags);
 559         }
 560         set_current_state(TASK_RUNNING);
 561         remove_wait_queue(&tty->write_wait, &wait);
 562         if (flush)
 563                 kfifo_reset_out(&port->write_fifo);
 564         spin_unlock_irqrestore(&port->ep_lock, flags);
 565         tty_kref_put(tty);
 566
 567         /* wait for data to drain from the device */
 568         timeout += jiffies;
 569         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
 570                                                 && !serial->disconnected) {
 571                 /* not disconnected */
 572                 if (!tx_active(port))
 573                         break;
 574                 msleep(10);
 575         }
 576
 577         /* disconnected */
 578         if (serial->disconnected)
 579                 return;
 580
 581         /* wait one more character time, based on baud rate */
 582         /* (tx_active doesn't seem to wait for the last byte) */
 583         baud_rate = port->baud_rate;
 584         if (baud_rate == 0)
 585                 baud_rate = 50;
 586         msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
 587 }
 588
 589 static int choose_config(struct usb_device *dev)
 590 {
 591         /*
 592          * There may be multiple configurations on this device, in which case
 593          * we would need to read and parse all of them to find out which one
 594          * we want. However, we just support one config at this point,
 595          * configuration # 1, which is Config Descriptor 0.
 596          */
 597
 598         dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
 599                 __func__, dev->config->desc.bNumInterfaces);
 600         dev_dbg(&dev->dev, "%s - MAX Power            = %d\n",
 601                 __func__, dev->config->desc.bMaxPower * 2);
 602
 603         if (dev->config->desc.bNumInterfaces != 1) {
 604                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
 605                 return -ENODEV;
 606         }
 607
 608         return 0;
 609 }
 610
 611 static int read_rom(struct edgeport_serial *serial,
 612                                 int start_address, int length, __u8 *buffer)
 613 {
 614         int status;
 615
 616         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 617                 status = read_download_mem(serial->serial->dev,
 618                                                start_address,
 619                                                length,
 620                                                serial->TI_I2C_Type,
 621                                                buffer);
 622         } else {
 623                 status = read_boot_mem(serial, start_address, length,
 624                                                                 buffer);
 625         }
 626         return status;
 627 }
 628
 629 static int write_rom(struct edgeport_serial *serial, int start_address,
 630                                                 int length, __u8 *buffer)
 631 {
 632         if (serial->product_info.TiMode == TI_MODE_BOOT)
 633                 return write_boot_mem(serial, start_address, length,
 634                                                                 buffer);
 635
 636         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 637                 return write_i2c_mem(serial, start_address, length,
 638                                                 serial->TI_I2C_Type, buffer);
 639         return -EINVAL;
 640 }
 641
 642
 643
 644 /* Read a descriptor header from I2C based on type */
 645 static int get_descriptor_addr(struct edgeport_serial *serial,
 646                                 int desc_type, struct ti_i2c_desc *rom_desc)
 647 {
 648         int start_address;
 649         int status;
 650
 651         /* Search for requested descriptor in I2C */
 652         start_address = 2;
 653         do {
 654                 status = read_rom(serial,
 655                                    start_address,
 656                                    sizeof(struct ti_i2c_desc),
 657                                    (__u8 *)rom_desc);
 658                 if (status)
 659                         return 0;
 660
 661                 if (rom_desc->Type == desc_type)
 662                         return start_address;
 663
 664                 start_address = start_address + sizeof(struct ti_i2c_desc)
 665                                                         + rom_desc->Size;
 666
 667         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 668
 669         return 0;
 670 }
 671
 672 /* Validate descriptor checksum */
 673 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 674 {
 675         __u16 i;
 676         __u8 cs = 0;
 677
 678         for (i = 0; i < rom_desc->Size; i++)
 679                 cs = (__u8)(cs + buffer[i]);
 680
 681         if (cs != rom_desc->CheckSum) {
 682                 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 683                 return -EINVAL;
 684         }
 685         return 0;
 686 }
 687
 688 /* Make sure that the I2C image is good */
 689 static int check_i2c_image(struct edgeport_serial *serial)
 690 {
 691         struct device *dev = &serial->serial->dev->dev;
 692         int status = 0;
 693         struct ti_i2c_desc *rom_desc;
 694         int start_address = 2;
 695         __u8 *buffer;
 696         __u16 ttype;
 697
 698         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 699         if (!rom_desc) {
 700                 dev_err(dev, "%s - out of memory\n", __func__);
 701                 return -ENOMEM;
 702         }
 703         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 704         if (!buffer) {
 705                 dev_err(dev, "%s - out of memory when allocating buffer\n",
 706                                                                 __func__);
 707                 kfree(rom_desc);
 708                 return -ENOMEM;
 709         }
 710
 711         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 712         status = read_rom(serial, 0, 1, buffer);
 713         if (status)
 714                 goto out;
 715
 716         if (*buffer != UMP5152 && *buffer != UMP3410) {
 717                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 718                 status = -ENODEV;
 719                 goto out;
 720         }
 721
 722         do {
 723                 /* Validate the I2C */
 724                 status = read_rom(serial,
 725                                 start_address,
 726                                 sizeof(struct ti_i2c_desc),
 727                                 (__u8 *)rom_desc);
 728                 if (status)
 729                         break;
 730
 731                 if ((start_address + sizeof(struct ti_i2c_desc) +
 732                                         rom_desc->Size) > TI_MAX_I2C_SIZE) {
 733                         status = -ENODEV;
 734                         dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
 735                         break;
 736                 }
 737
 738                 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
 739
 740                 /* Skip type 2 record */
 741                 ttype = rom_desc->Type & 0x0f;
 742                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 743                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 744                         /* Read the descriptor data */
 745                         status = read_rom(serial, start_address +
 746                                                 sizeof(struct ti_i2c_desc),
 747                                                 rom_desc->Size, buffer);
 748                         if (status)
 749                                 break;
 750
 751                         status = valid_csum(rom_desc, buffer);
 752                         if (status)
 753                                 break;
 754                 }
 755                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 756                                                                 rom_desc->Size;
 757
 758         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 759                                 (start_address < TI_MAX_I2C_SIZE));
 760
 761         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 762                                 (start_address > TI_MAX_I2C_SIZE))
 763                 status = -ENODEV;
 764
 765 out:
 766         kfree(buffer);
 767         kfree(rom_desc);
 768         return status;
 769 }
 770
 771 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 772 {
 773         int status;
 774         int start_address;
 775         struct ti_i2c_desc *rom_desc;
 776         struct edge_ti_manuf_descriptor *desc;
 777         struct device *dev = &serial->serial->dev->dev;
 778
 779         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 780         if (!rom_desc) {
 781                 dev_err(dev, "%s - out of memory\n", __func__);
 782                 return -ENOMEM;
 783         }
 784         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 785                                                                 rom_desc);
 786
 787         if (!start_address) {
 788                 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
 789                 status = -ENODEV;
 790                 goto exit;
 791         }
 792
 793         /* Read the descriptor data */
 794         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 795                                                 rom_desc->Size, buffer);
 796         if (status)
 797                 goto exit;
 798
 799         status = valid_csum(rom_desc, buffer);
 800
 801         desc = (struct edge_ti_manuf_descriptor *)buffer;
 802         dev_dbg(dev, "%s - IonConfig      0x%x\n", __func__, desc->IonConfig);
 803         dev_dbg(dev, "%s - Version          %d\n", __func__, desc->Version);
 804         dev_dbg(dev, "%s - Cpu/Board      0x%x\n", __func__, desc->CpuRev_BoardRev);
 805         dev_dbg(dev, "%s - NumPorts         %d\n", __func__, desc->NumPorts);
 806         dev_dbg(dev, "%s - NumVirtualPorts  %d\n", __func__, desc->NumVirtualPorts);
 807         dev_dbg(dev, "%s - TotalPorts       %d\n", __func__, desc->TotalPorts);
 808
 809 exit:
 810         kfree(rom_desc);
 811         return status;
 812 }
 813
 814 /* Build firmware header used for firmware update */
 815 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 816 {
 817         __u8 *buffer;
 818         int buffer_size;
 819         int i;
 820         int err;
 821         __u8 cs = 0;
 822         struct ti_i2c_desc *i2c_header;
 823         struct ti_i2c_image_header *img_header;
 824         struct ti_i2c_firmware_rec *firmware_rec;
 825         const struct firmware *fw;
 826         const char *fw_name = "edgeport/down3.bin";
 827
 828         /* In order to update the I2C firmware we must change the type 2 record
 829          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 830          * Then while in boot mode, the driver will download the latest
 831          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 832          * device comes back up in download mode the driver will cause the new
 833          * firmware to be copied from the UMP Ram to I2C and the firmware will
 834          * update the record type from 0xf2 to 0x02.
 835          */
 836
 837         /* Allocate a 15.5k buffer + 2 bytes for version number
 838          * (Firmware Record) */
 839         buffer_size = (((1024 * 16) - 512 ) +
 840                         sizeof(struct ti_i2c_firmware_rec));
 841
 842         buffer = kmalloc(buffer_size, GFP_KERNEL);
 843         if (!buffer) {
 844                 dev_err(dev, "%s - out of memory\n", __func__);
 845                 return -ENOMEM;
 846         }
 847
 848         // Set entire image of 0xffs
 849         memset(buffer, 0xff, buffer_size);
 850
 851         err = request_firmware(&fw, fw_name, dev);
 852         if (err) {
 853                 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
 854                        fw_name, err);
 855                 kfree(buffer);
 856                 return err;
 857         }
 858
 859         /* Save Download Version Number */
 860         OperationalMajorVersion = fw->data[0];
 861         OperationalMinorVersion = fw->data[1];
 862         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 863
 864         /* Copy version number into firmware record */
 865         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 866
 867         firmware_rec->Ver_Major = OperationalMajorVersion;
 868         firmware_rec->Ver_Minor = OperationalMinorVersion;
 869
 870         /* Pointer to fw_down memory image */
 871         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 872
 873         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 874                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 875                 le16_to_cpu(img_header->Length));
 876
 877         release_firmware(fw);
 878
 879         for (i=0; i < buffer_size; i++) {
 880                 cs = (__u8)(cs + buffer[i]);
 881         }
 882
 883         kfree(buffer);
 884
 885         /* Build new header */
 886         i2c_header =  (struct ti_i2c_desc *)header;
 887         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 888
 889         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 890         i2c_header->Size        = (__u16)buffer_size;
 891         i2c_header->CheckSum    = cs;
 892         firmware_rec->Ver_Major = OperationalMajorVersion;
 893         firmware_rec->Ver_Minor = OperationalMinorVersion;
 894
 895         return 0;
 896 }
 897
 898 /* Try to figure out what type of I2c we have */
 899 static int i2c_type_bootmode(struct edgeport_serial *serial)
 900 {
 901         struct device *dev = &serial->serial->dev->dev;
 902         int status;
 903         u8 *data;
 904
 905         data = kmalloc(1, GFP_KERNEL);
 906         if (!data) {
 907                 dev_err(dev, "%s - out of memory\n", __func__);
 908                 return -ENOMEM;
 909         }
 910
 911         /* Try to read type 2 */
 912         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 913                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 914         if (status)
 915                 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
 916         else
 917                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 918         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 919                 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
 920                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 921                 goto out;
 922         }
 923
 924         /* Try to read type 3 */
 925         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 926                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 927         if (status)
 928                 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
 929         else
 930                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 931         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 932                 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
 933                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 934                 goto out;
 935         }
 936
 937         dev_dbg(dev, "%s - Unknown\n", __func__);
 938         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 939         status = -ENODEV;
 940 out:
 941         kfree(data);
 942         return status;
 943 }
 944
 945 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 946                                                 int length, int *num_sent)
 947 {
 948         int status;
 949
 950         status = usb_bulk_msg(serial->dev,
 951                         usb_sndbulkpipe(serial->dev,
 952                                 serial->port[0]->bulk_out_endpointAddress),
 953                         buffer, length, num_sent, 1000);
 954         return status;
 955 }
 956
 957 /* Download given firmware image to the device (IN BOOT MODE) */
 958 static int download_code(struct edgeport_serial *serial, __u8 *image,
 959                                                         int image_length)
 960 {
 961         int status = 0;
 962         int pos;
 963         int transfer;
 964         int done;
 965
 966         /* Transfer firmware image */
 967         for (pos = 0; pos < image_length; ) {
 968                 /* Read the next buffer from file */
 969                 transfer = image_length - pos;
 970                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 971                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 972
 973                 /* Transfer data */
 974                 status = bulk_xfer(serial->serial, &image[pos],
 975                                                         transfer, &done);
 976                 if (status)
 977                         break;
 978                 /* Advance buffer pointer */
 979                 pos += done;
 980         }
 981
 982         return status;
 983 }
 984
 985 /* FIXME!!! */
 986 static int config_boot_dev(struct usb_device *dev)
 987 {
 988         return 0;
 989 }
 990
 991 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
 992 {
 993         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
 994 }
 995
 996 /**
 997  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 998  *
 999  * This routine downloads the main operating code into the TI5052, using the
1000  * boot code already burned into E2PROM or ROM.
1001  */
1002 static int download_fw(struct edgeport_serial *serial)
1003 {
1004         struct device *dev = &serial->serial->dev->dev;
1005         int status = 0;
1006         int start_address;
1007         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1008         struct usb_interface_descriptor *interface;
1009         int download_cur_ver;
1010         int download_new_ver;
1011
1012         /* This routine is entered by both the BOOT mode and the Download mode
1013          * We can determine which code is running by the reading the config
1014          * descriptor and if we have only one bulk pipe it is in boot mode
1015          */
1016         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1017
1018         /* Default to type 2 i2c */
1019         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1020
1021         status = choose_config(serial->serial->dev);
1022         if (status)
1023                 return status;
1024
1025         interface = &serial->serial->interface->cur_altsetting->desc;
1026         if (!interface) {
1027                 dev_err(dev, "%s - no interface set, error!\n", __func__);
1028                 return -ENODEV;
1029         }
1030
1031         /*
1032          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1033          * if we have more than one endpoint we are definitely in download
1034          * mode
1035          */
1036         if (interface->bNumEndpoints > 1)
1037                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1038         else
1039                 /* Otherwise we will remain in configuring mode */
1040                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1041
1042         /********************************************************************/
1043         /* Download Mode */
1044         /********************************************************************/
1045         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1046                 struct ti_i2c_desc *rom_desc;
1047
1048                 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
1049
1050                 status = check_i2c_image(serial);
1051                 if (status) {
1052                         dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
1053                         return status;
1054                 }
1055
1056                 /* Validate Hardware version number
1057                  * Read Manufacturing Descriptor from TI Based Edgeport
1058                  */
1059                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1060                 if (!ti_manuf_desc) {
1061                         dev_err(dev, "%s - out of memory.\n", __func__);
1062                         return -ENOMEM;
1063                 }
1064                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1065                 if (status) {
1066                         kfree(ti_manuf_desc);
1067                         return status;
1068                 }
1069
1070                 /* Check version number of ION descriptor */
1071                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1072                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1073                                 __func__, ti_cpu_rev(ti_manuf_desc));
1074                         kfree(ti_manuf_desc);
1075                         return -EINVAL;
1076                 }
1077
1078                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1079                 if (!rom_desc) {
1080                         dev_err(dev, "%s - out of memory.\n", __func__);
1081                         kfree(ti_manuf_desc);
1082                         return -ENOMEM;
1083                 }
1084
1085                 /* Search for type 2 record (firmware record) */
1086                 start_address = get_descriptor_addr(serial,
1087                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1088                 if (start_address != 0) {
1089                         struct ti_i2c_firmware_rec *firmware_version;
1090                         u8 *record;
1091
1092                         dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1093
1094                         firmware_version = kmalloc(sizeof(*firmware_version),
1095                                                                 GFP_KERNEL);
1096                         if (!firmware_version) {
1097                                 dev_err(dev, "%s - out of memory.\n", __func__);
1098                                 kfree(rom_desc);
1099                                 kfree(ti_manuf_desc);
1100                                 return -ENOMEM;
1101                         }
1102
1103                         /* Validate version number
1104                          * Read the descriptor data
1105                          */
1106                         status = read_rom(serial, start_address +
1107                                         sizeof(struct ti_i2c_desc),
1108                                         sizeof(struct ti_i2c_firmware_rec),
1109                                         (__u8 *)firmware_version);
1110                         if (status) {
1111                                 kfree(firmware_version);
1112                                 kfree(rom_desc);
1113                                 kfree(ti_manuf_desc);
1114                                 return status;
1115                         }
1116
1117                         /* Check version number of download with current
1118                            version in I2c */
1119                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1120                                            (firmware_version->Ver_Minor);
1121                         download_new_ver = (OperationalMajorVersion << 8) +
1122                                            (OperationalMinorVersion);
1123
1124                         dev_dbg(dev, "%s - >> FW Versions Device %d.%d  Driver %d.%d\n",
1125                                 __func__, firmware_version->Ver_Major,
1126                                 firmware_version->Ver_Minor,
1127                                 OperationalMajorVersion,
1128                                 OperationalMinorVersion);
1129
1130                         /* Check if we have an old version in the I2C and
1131                            update if necessary */
1132                         if (download_cur_ver < download_new_ver) {
1133                                 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1134                                         __func__,
1135                                         firmware_version->Ver_Major,
1136                                         firmware_version->Ver_Minor,
1137                                         OperationalMajorVersion,
1138                                         OperationalMinorVersion);
1139
1140                                 record = kmalloc(1, GFP_KERNEL);
1141                                 if (!record) {
1142                                         dev_err(dev, "%s - out of memory.\n",
1143                                                         __func__);
1144                                         kfree(firmware_version);
1145                                         kfree(rom_desc);
1146                                         kfree(ti_manuf_desc);
1147                                         return -ENOMEM;
1148                                 }
1149                                 /* In order to update the I2C firmware we must
1150                                  * change the type 2 record to type 0xF2. This
1151                                  * will force the UMP to come up in Boot Mode.
1152                                  * Then while in boot mode, the driver will
1153                                  * download the latest firmware (padded to
1154                                  * 15.5k) into the UMP ram. Finally when the
1155                                  * device comes back up in download mode the
1156                                  * driver will cause the new firmware to be
1157                                  * copied from the UMP Ram to I2C and the
1158                                  * firmware will update the record type from
1159                                  * 0xf2 to 0x02.
1160                                  */
1161                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1162
1163                                 /* Change the I2C Firmware record type to
1164                                    0xf2 to trigger an update */
1165                                 status = write_rom(serial, start_address,
1166                                                 sizeof(*record), record);
1167                                 if (status) {
1168                                         kfree(record);
1169                                         kfree(firmware_version);
1170                                         kfree(rom_desc);
1171                                         kfree(ti_manuf_desc);
1172                                         return status;
1173                                 }
1174
1175                                 /* verify the write -- must do this in order
1176                                  * for write to complete before we do the
1177                                  * hardware reset
1178                                  */
1179                                 status = read_rom(serial,
1180                                                         start_address,
1181                                                         sizeof(*record),
1182                                                         record);
1183                                 if (status) {
1184                                         kfree(record);
1185                                         kfree(firmware_version);
1186                                         kfree(rom_desc);
1187                                         kfree(ti_manuf_desc);
1188                                         return status;
1189                                 }
1190
1191                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1192                                         dev_err(dev, "%s - error resetting device\n", __func__);
1193                                         kfree(record);
1194                                         kfree(firmware_version);
1195                                         kfree(rom_desc);
1196                                         kfree(ti_manuf_desc);
1197                                         return -ENODEV;
1198                                 }
1199
1200                                 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1201
1202                                 /* Reset UMP -- Back to BOOT MODE */
1203                                 status = ti_vsend_sync(serial->serial->dev,
1204                                                 UMPC_HARDWARE_RESET,
1205                                                 0, 0, NULL, 0);
1206
1207                                 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1208
1209                                 /* return an error on purpose. */
1210                                 kfree(record);
1211                                 kfree(firmware_version);
1212                                 kfree(rom_desc);
1213                                 kfree(ti_manuf_desc);
1214                                 return -ENODEV;
1215                         }
1216                         kfree(firmware_version);
1217                 }
1218                 /* Search for type 0xF2 record (firmware blank record) */
1219                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1220 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1221                                         sizeof(struct ti_i2c_firmware_rec))
1222                         __u8 *header;
1223                         __u8 *vheader;
1224
1225                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1226                         if (!header) {
1227                                 dev_err(dev, "%s - out of memory.\n", __func__);
1228                                 kfree(rom_desc);
1229                                 kfree(ti_manuf_desc);
1230                                 return -ENOMEM;
1231                         }
1232
1233                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1234                         if (!vheader) {
1235                                 dev_err(dev, "%s - out of memory.\n", __func__);
1236                                 kfree(header);
1237                                 kfree(rom_desc);
1238                                 kfree(ti_manuf_desc);
1239                                 return -ENOMEM;
1240                         }
1241
1242                         dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1243
1244                         /*
1245                          * In order to update the I2C firmware we must change
1246                          * the type 2 record to type 0xF2. This will force the
1247                          * UMP to come up in Boot Mode.  Then while in boot
1248                          * mode, the driver will download the latest firmware
1249                          * (padded to 15.5k) into the UMP ram. Finally when the
1250                          * device comes back up in download mode the driver
1251                          * will cause the new firmware to be copied from the
1252                          * UMP Ram to I2C and the firmware will update the
1253                          * record type from 0xf2 to 0x02.
1254                          */
1255                         status = build_i2c_fw_hdr(header, dev);
1256                         if (status) {
1257                                 kfree(vheader);
1258                                 kfree(header);
1259                                 kfree(rom_desc);
1260                                 kfree(ti_manuf_desc);
1261                                 return -EINVAL;
1262                         }
1263
1264                         /* Update I2C with type 0xf2 record with correct
1265                            size and checksum */
1266                         status = write_rom(serial,
1267                                                 start_address,
1268                                                 HEADER_SIZE,
1269                                                 header);
1270                         if (status) {
1271                                 kfree(vheader);
1272                                 kfree(header);
1273                                 kfree(rom_desc);
1274                                 kfree(ti_manuf_desc);
1275                                 return -EINVAL;
1276                         }
1277
1278                         /* verify the write -- must do this in order for
1279                            write to complete before we do the hardware reset */
1280                         status = read_rom(serial, start_address,
1281                                                         HEADER_SIZE, vheader);
1282
1283                         if (status) {
1284                                 dev_dbg(dev, "%s - can't read header back\n", __func__);
1285                                 kfree(vheader);
1286                                 kfree(header);
1287                                 kfree(rom_desc);
1288                                 kfree(ti_manuf_desc);
1289                                 return status;
1290                         }
1291                         if (memcmp(vheader, header, HEADER_SIZE)) {
1292                                 dev_dbg(dev, "%s - write download record failed\n", __func__);
1293                                 kfree(vheader);
1294                                 kfree(header);
1295                                 kfree(rom_desc);
1296                                 kfree(ti_manuf_desc);
1297                                 return -EINVAL;
1298                         }
1299
1300                         kfree(vheader);
1301                         kfree(header);
1302
1303                         dev_dbg(dev, "%s - Start firmware update\n", __func__);
1304
1305                         /* Tell firmware to copy download image into I2C */
1306                         status = ti_vsend_sync(serial->serial->dev,
1307                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1308
1309                         dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1310                         if (status) {
1311                                 dev_err(dev,
1312                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1313                                                                 __func__);
1314                                 kfree(rom_desc);
1315                                 kfree(ti_manuf_desc);
1316                                 return status;
1317                         }
1318                 }
1319
1320                 // The device is running the download code
1321                 kfree(rom_desc);
1322                 kfree(ti_manuf_desc);
1323                 return 0;
1324         }
1325
1326         /********************************************************************/
1327         /* Boot Mode */
1328         /********************************************************************/
1329         dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1330
1331         /* Configure the TI device so we can use the BULK pipes for download */
1332         status = config_boot_dev(serial->serial->dev);
1333         if (status)
1334                 return status;
1335
1336         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1337                                                         != USB_VENDOR_ID_ION) {
1338                 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1339                         le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1340                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1341                 goto stayinbootmode;
1342         }
1343
1344         /* We have an ION device (I2c Must be programmed)
1345            Determine I2C image type */
1346         if (i2c_type_bootmode(serial))
1347                 goto stayinbootmode;
1348
1349         /* Check for ION Vendor ID and that the I2C is valid */
1350         if (!check_i2c_image(serial)) {
1351                 struct ti_i2c_image_header *header;
1352                 int i;
1353                 __u8 cs = 0;
1354                 __u8 *buffer;
1355                 int buffer_size;
1356                 int err;
1357                 const struct firmware *fw;
1358                 const char *fw_name = "edgeport/down3.bin";
1359
1360                 /* Validate Hardware version number
1361                  * Read Manufacturing Descriptor from TI Based Edgeport
1362                  */
1363                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1364                 if (!ti_manuf_desc) {
1365                         dev_err(dev, "%s - out of memory.\n", __func__);
1366                         return -ENOMEM;
1367                 }
1368                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1369                 if (status) {
1370                         kfree(ti_manuf_desc);
1371                         goto stayinbootmode;
1372                 }
1373
1374                 /* Check for version 2 */
1375                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1376                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1377                                 __func__, ti_cpu_rev(ti_manuf_desc));
1378                         kfree(ti_manuf_desc);
1379                         goto stayinbootmode;
1380                 }
1381
1382                 kfree(ti_manuf_desc);
1383
1384                 /*
1385                  * In order to update the I2C firmware we must change the type
1386                  * 2 record to type 0xF2. This will force the UMP to come up
1387                  * in Boot Mode.  Then while in boot mode, the driver will
1388                  * download the latest firmware (padded to 15.5k) into the
1389                  * UMP ram. Finally when the device comes back up in download
1390                  * mode the driver will cause the new firmware to be copied
1391                  * from the UMP Ram to I2C and the firmware will update the
1392                  * record type from 0xf2 to 0x02.
1393                  *
1394                  * Do we really have to copy the whole firmware image,
1395                  * or could we do this in place!
1396                  */
1397
1398                 /* Allocate a 15.5k buffer + 3 byte header */
1399                 buffer_size = (((1024 * 16) - 512) +
1400                                         sizeof(struct ti_i2c_image_header));
1401                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1402                 if (!buffer) {
1403                         dev_err(dev, "%s - out of memory\n", __func__);
1404                         return -ENOMEM;
1405                 }
1406
1407                 /* Initialize the buffer to 0xff (pad the buffer) */
1408                 memset(buffer, 0xff, buffer_size);
1409
1410                 err = request_firmware(&fw, fw_name, dev);
1411                 if (err) {
1412                         printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1413                                fw_name, err);
1414                         kfree(buffer);
1415                         return err;
1416                 }
1417                 memcpy(buffer, &fw->data[4], fw->size - 4);
1418                 release_firmware(fw);
1419
1420                 for (i = sizeof(struct ti_i2c_image_header);
1421                                 i < buffer_size; i++) {
1422                         cs = (__u8)(cs + buffer[i]);
1423                 }
1424
1425                 header = (struct ti_i2c_image_header *)buffer;
1426
1427                 /* update length and checksum after padding */
1428                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1429                                         sizeof(struct ti_i2c_image_header)));
1430                 header->CheckSum = cs;
1431
1432                 /* Download the operational code  */
1433                 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1434                 status = download_code(serial, buffer, buffer_size);
1435
1436                 kfree(buffer);
1437
1438                 if (status) {
1439                         dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1440                         return status;
1441                 }
1442
1443                 /* Device will reboot */
1444                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1445
1446                 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1447
1448                 /* return an error on purpose */
1449                 return -ENODEV;
1450         }
1451
1452 stayinbootmode:
1453         /* Eprom is invalid or blank stay in boot mode */
1454         dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1455         serial->product_info.TiMode = TI_MODE_BOOT;
1456
1457         return 0;
1458 }
1459
1460
1461 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1462 {
1463         int port_number = port->port->number - port->port->serial->minor;
1464         on = !!on;      /* 1 or 0 not bitmask */
1465         return send_cmd(port->port->serial->dev,
1466                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1467                         on, NULL, 0);
1468 }
1469
1470
1471 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1472 {
1473         int status = 0;
1474
1475         dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1476
1477         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1478         if (status)
1479                 return status;
1480         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1481         if (status)
1482                 return status;
1483         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1484 }
1485
1486 /* Convert TI LSR to standard UART flags */
1487 static __u8 map_line_status(__u8 ti_lsr)
1488 {
1489         __u8 lsr = 0;
1490
1491 #define MAP_FLAG(flagUmp, flagUart)    \
1492         if (ti_lsr & flagUmp) \
1493                 lsr |= flagUart;
1494
1495         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1496         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1497         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1498         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1499         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1500         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1501
1502 #undef MAP_FLAG
1503
1504         return lsr;
1505 }
1506
1507 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1508 {
1509         struct async_icount *icount;
1510         struct tty_struct *tty;
1511
1512         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1513
1514         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1515                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1516                 icount = &edge_port->icount;
1517
1518                 /* update input line counters */
1519                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1520                         icount->cts++;
1521                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1522                         icount->dsr++;
1523                 if (msr & EDGEPORT_MSR_DELTA_CD)
1524                         icount->dcd++;
1525                 if (msr & EDGEPORT_MSR_DELTA_RI)
1526                         icount->rng++;
1527                 wake_up_interruptible(&edge_port->delta_msr_wait);
1528         }
1529
1530         /* Save the new modem status */
1531         edge_port->shadow_msr = msr & 0xf0;
1532
1533         tty = tty_port_tty_get(&edge_port->port->port);
1534         /* handle CTS flow control */
1535         if (tty && C_CRTSCTS(tty)) {
1536                 if (msr & EDGEPORT_MSR_CTS) {
1537                         tty->hw_stopped = 0;
1538                         tty_wakeup(tty);
1539                 } else {
1540                         tty->hw_stopped = 1;
1541                 }
1542         }
1543         tty_kref_put(tty);
1544 }
1545
1546 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1547                                                         __u8 lsr, __u8 data)
1548 {
1549         struct async_icount *icount;
1550         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1551                                                 LSR_FRM_ERR | LSR_BREAK));
1552         struct tty_struct *tty;
1553
1554         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1555
1556         edge_port->shadow_lsr = lsr;
1557
1558         if (new_lsr & LSR_BREAK)
1559                 /*
1560                  * Parity and Framing errors only count if they
1561                  * occur exclusive of a break being received.
1562                  */
1563                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1564
1565         /* Place LSR data byte into Rx buffer */
1566         if (lsr_data) {
1567                 tty = tty_port_tty_get(&edge_port->port->port);
1568                 if (tty) {
1569                         edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1570                         tty_kref_put(tty);
1571                 }
1572         }
1573
1574         /* update input line counters */
1575         icount = &edge_port->icount;
1576         if (new_lsr & LSR_BREAK)
1577                 icount->brk++;
1578         if (new_lsr & LSR_OVER_ERR)
1579                 icount->overrun++;
1580         if (new_lsr & LSR_PAR_ERR)
1581                 icount->parity++;
1582         if (new_lsr & LSR_FRM_ERR)
1583                 icount->frame++;
1584 }
1585
1586
1587 static void edge_interrupt_callback(struct urb *urb)
1588 {
1589         struct edgeport_serial *edge_serial = urb->context;
1590         struct usb_serial_port *port;
1591         struct edgeport_port *edge_port;
1592         struct device *dev;
1593         unsigned char *data = urb->transfer_buffer;
1594         int length = urb->actual_length;
1595         int port_number;
1596         int function;
1597         int retval;
1598         __u8 lsr;
1599         __u8 msr;
1600         int status = urb->status;
1601
1602         switch (status) {
1603         case 0:
1604                 /* success */
1605                 break;
1606         case -ECONNRESET:
1607         case -ENOENT:
1608         case -ESHUTDOWN:
1609                 /* this urb is terminated, clean up */
1610                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1611                     __func__, status);
1612                 return;
1613         default:
1614                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1615                         "%d\n", __func__, status);
1616                 goto exit;
1617         }
1618
1619         if (!length) {
1620                 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1621                 goto exit;
1622         }
1623
1624         dev = &edge_serial->serial->dev->dev;
1625         usb_serial_debug_data(debug, dev, __func__, length, data);
1626
1627         if (length != 2) {
1628                 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1629                 goto exit;
1630         }
1631
1632         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1633         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1634         dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1635                 port_number, function, data[1]);
1636         port = edge_serial->serial->port[port_number];
1637         edge_port = usb_get_serial_port_data(port);
1638         if (!edge_port) {
1639                 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1640                 return;
1641         }
1642         switch (function) {
1643         case TIUMP_INTERRUPT_CODE_LSR:
1644                 lsr = map_line_status(data[1]);
1645                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1646                         /* Save the LSR event for bulk read
1647                            completion routine */
1648                         dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1649                                 __func__, port_number, lsr);
1650                         edge_port->lsr_event = 1;
1651                         edge_port->lsr_mask = lsr;
1652                 } else {
1653                         dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1654                                 __func__, port_number, lsr);
1655                         handle_new_lsr(edge_port, 0, lsr, 0);
1656                 }
1657                 break;
1658
1659         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1660                 /* Copy MSR from UMP */
1661                 msr = data[1];
1662                 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1663                         __func__, port_number, msr);
1664                 handle_new_msr(edge_port, msr);
1665                 break;
1666
1667         default:
1668                 dev_err(&urb->dev->dev,
1669                         "%s - Unknown Interrupt code from UMP %x\n",
1670                         __func__, data[1]);
1671                 break;
1672
1673         }
1674
1675 exit:
1676         retval = usb_submit_urb(urb, GFP_ATOMIC);
1677         if (retval)
1678                 dev_err(&urb->dev->dev,
1679                         "%s - usb_submit_urb failed with result %d\n",
1680                          __func__, retval);
1681 }
1682
1683 static void edge_bulk_in_callback(struct urb *urb)
1684 {
1685         struct edgeport_port *edge_port = urb->context;
1686         struct device *dev = &edge_port->port->dev;
1687         unsigned char *data = urb->transfer_buffer;
1688         struct tty_struct *tty;
1689         int retval = 0;
1690         int port_number;
1691         int status = urb->status;
1692
1693         switch (status) {
1694         case 0:
1695                 /* success */
1696                 break;
1697         case -ECONNRESET:
1698         case -ENOENT:
1699         case -ESHUTDOWN:
1700                 /* this urb is terminated, clean up */
1701                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1702                 return;
1703         default:
1704                 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1705         }
1706
1707         if (status == -EPIPE)
1708                 goto exit;
1709
1710         if (status) {
1711                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1712                 return;
1713         }
1714
1715         port_number = edge_port->port->number - edge_port->port->serial->minor;
1716
1717         if (edge_port->lsr_event) {
1718                 edge_port->lsr_event = 0;
1719                 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1720                         __func__, port_number, edge_port->lsr_mask, *data);
1721                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1722                 /* Adjust buffer length/pointer */
1723                 --urb->actual_length;
1724                 ++data;
1725         }
1726
1727         tty = tty_port_tty_get(&edge_port->port->port);
1728         if (tty && urb->actual_length) {
1729                 usb_serial_debug_data(debug, dev, __func__, urb->actual_length, data);
1730                 if (edge_port->close_pending)
1731                         dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1732                                                                 __func__);
1733                 else
1734                         edge_tty_recv(dev, tty, data, urb->actual_length);
1735                 edge_port->icount.rx += urb->actual_length;
1736         }
1737         tty_kref_put(tty);
1738
1739 exit:
1740         /* continue read unless stopped */
1741         spin_lock(&edge_port->ep_lock);
1742         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1743                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1744         else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1745                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1746
1747         spin_unlock(&edge_port->ep_lock);
1748         if (retval)
1749                 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1750 }
1751
1752 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1753                                         unsigned char *data, int length)
1754 {
1755         int queued;
1756
1757         queued = tty_insert_flip_string(tty, data, length);
1758         if (queued < length)
1759                 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1760                         __func__, length - queued);
1761         tty_flip_buffer_push(tty);
1762 }
1763
1764 static void edge_bulk_out_callback(struct urb *urb)
1765 {
1766         struct usb_serial_port *port = urb->context;
1767         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1768         int status = urb->status;
1769         struct tty_struct *tty;
1770
1771         edge_port->ep_write_urb_in_use = 0;
1772
1773         switch (status) {
1774         case 0:
1775                 /* success */
1776                 break;
1777         case -ECONNRESET:
1778         case -ENOENT:
1779         case -ESHUTDOWN:
1780                 /* this urb is terminated, clean up */
1781                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1782                     __func__, status);
1783                 return;
1784         default:
1785                 dev_err_console(port, "%s - nonzero write bulk status "
1786                         "received: %d\n", __func__, status);
1787         }
1788
1789         /* send any buffered data */
1790         tty = tty_port_tty_get(&port->port);
1791         edge_send(tty);
1792         tty_kref_put(tty);
1793 }
1794
1795 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1796 {
1797         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1798         struct edgeport_serial *edge_serial;
1799         struct usb_device *dev;
1800         struct urb *urb;
1801         int port_number;
1802         int status;
1803         u16 open_settings;
1804         u8 transaction_timeout;
1805
1806         if (edge_port == NULL)
1807                 return -ENODEV;
1808
1809         port_number = port->number - port->serial->minor;
1810         switch (port_number) {
1811         case 0:
1812                 edge_port->uart_base = UMPMEM_BASE_UART1;
1813                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1814                 break;
1815         case 1:
1816                 edge_port->uart_base = UMPMEM_BASE_UART2;
1817                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1818                 break;
1819         default:
1820                 dev_err(&port->dev, "Unknown port number!!!\n");
1821                 return -ENODEV;
1822         }
1823
1824         dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
1825                 __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1826
1827         dev = port->serial->dev;
1828
1829         memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1830         init_waitqueue_head(&edge_port->delta_msr_wait);
1831
1832         /* turn off loopback */
1833         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1834         if (status) {
1835                 dev_err(&port->dev,
1836                                 "%s - cannot send clear loopback command, %d\n",
1837                         __func__, status);
1838                 return status;
1839         }
1840
1841         /* set up the port settings */
1842         if (tty)
1843                 edge_set_termios(tty, port, tty->termios);
1844
1845         /* open up the port */
1846
1847         /* milliseconds to timeout for DMA transfer */
1848         transaction_timeout = 2;
1849
1850         edge_port->ump_read_timeout =
1851                                 max(20, ((transaction_timeout * 3) / 2));
1852
1853         /* milliseconds to timeout for DMA transfer */
1854         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1855                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1856                              (transaction_timeout << 2));
1857
1858         dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1859
1860         /* Tell TI to open and start the port */
1861         status = send_cmd(dev, UMPC_OPEN_PORT,
1862                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1863         if (status) {
1864                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1865                                                         __func__, status);
1866                 return status;
1867         }
1868
1869         /* Start the DMA? */
1870         status = send_cmd(dev, UMPC_START_PORT,
1871                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1872         if (status) {
1873                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1874                                                         __func__, status);
1875                 return status;
1876         }
1877
1878         /* Clear TX and RX buffers in UMP */
1879         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1880         if (status) {
1881                 dev_err(&port->dev,
1882                         "%s - cannot send clear buffers command, %d\n",
1883                         __func__, status);
1884                 return status;
1885         }
1886
1887         /* Read Initial MSR */
1888         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1889                                 (__u16)(UMPM_UART1_PORT + port_number),
1890                                 &edge_port->shadow_msr, 1);
1891         if (status) {
1892                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1893                                                         __func__, status);
1894                 return status;
1895         }
1896
1897         dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1898
1899         /* Set Initial MCR */
1900         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1901         dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1902
1903         edge_serial = edge_port->edge_serial;
1904         if (mutex_lock_interruptible(&edge_serial->es_lock))
1905                 return -ERESTARTSYS;
1906         if (edge_serial->num_ports_open == 0) {
1907                 /* we are the first port to open, post the interrupt urb */
1908                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1909                 if (!urb) {
1910                         dev_err(&port->dev,
1911                                 "%s - no interrupt urb present, exiting\n",
1912                                 __func__);
1913                         status = -EINVAL;
1914                         goto release_es_lock;
1915                 }
1916                 urb->context = edge_serial;
1917                 status = usb_submit_urb(urb, GFP_KERNEL);
1918                 if (status) {
1919                         dev_err(&port->dev,
1920                                 "%s - usb_submit_urb failed with value %d\n",
1921                                         __func__, status);
1922                         goto release_es_lock;
1923                 }
1924         }
1925
1926         /*
1927          * reset the data toggle on the bulk endpoints to work around bug in
1928          * host controllers where things get out of sync some times
1929          */
1930         usb_clear_halt(dev, port->write_urb->pipe);
1931         usb_clear_halt(dev, port->read_urb->pipe);
1932
1933         /* start up our bulk read urb */
1934         urb = port->read_urb;
1935         if (!urb) {
1936                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1937                                                                 __func__);
1938                 status = -EINVAL;
1939                 goto unlink_int_urb;
1940         }
1941         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1942         urb->context = edge_port;
1943         status = usb_submit_urb(urb, GFP_KERNEL);
1944         if (status) {
1945                 dev_err(&port->dev,
1946                         "%s - read bulk usb_submit_urb failed with value %d\n",
1947                                 __func__, status);
1948                 goto unlink_int_urb;
1949         }
1950
1951         ++edge_serial->num_ports_open;
1952
1953         goto release_es_lock;
1954
1955 unlink_int_urb:
1956         if (edge_port->edge_serial->num_ports_open == 0)
1957                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1958 release_es_lock:
1959         mutex_unlock(&edge_serial->es_lock);
1960         return status;
1961 }
1962
1963 static void edge_close(struct usb_serial_port *port)
1964 {
1965         struct edgeport_serial *edge_serial;
1966         struct edgeport_port *edge_port;
1967         struct usb_serial *serial = port->serial;
1968         int port_number;
1969
1970         edge_serial = usb_get_serial_data(port->serial);
1971         edge_port = usb_get_serial_port_data(port);
1972         if (edge_serial == NULL || edge_port == NULL)
1973                 return;
1974
1975         /* The bulkreadcompletion routine will check
1976          * this flag and dump add read data */
1977         edge_port->close_pending = 1;
1978
1979         /* chase the port close and flush */
1980         chase_port(edge_port, (HZ * closing_wait) / 100, 1);
1981
1982         usb_kill_urb(port->read_urb);
1983         usb_kill_urb(port->write_urb);
1984         edge_port->ep_write_urb_in_use = 0;
1985
1986         /* assuming we can still talk to the device,
1987          * send a close port command to it */
1988         dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1989         port_number = port->number - port->serial->minor;
1990
1991         mutex_lock(&serial->disc_mutex);
1992         if (!serial->disconnected) {
1993                 send_cmd(serial->dev,
1994                                      UMPC_CLOSE_PORT,
1995                                      (__u8)(UMPM_UART1_PORT + port_number),
1996                                      0,
1997                                      NULL,
1998                                      0);
1999         }
2000         mutex_unlock(&serial->disc_mutex);
2001
2002         mutex_lock(&edge_serial->es_lock);
2003         --edge_port->edge_serial->num_ports_open;
2004         if (edge_port->edge_serial->num_ports_open <= 0) {
2005                 /* last port is now closed, let's shut down our interrupt urb */
2006                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2007                 edge_port->edge_serial->num_ports_open = 0;
2008         }
2009         mutex_unlock(&edge_serial->es_lock);
2010         edge_port->close_pending = 0;
2011 }
2012
2013 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2014                                 const unsigned char *data, int count)
2015 {
2016         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2017
2018         if (count == 0) {
2019                 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
2020                 return 0;
2021         }
2022
2023         if (edge_port == NULL)
2024                 return -ENODEV;
2025         if (edge_port->close_pending == 1)
2026                 return -ENODEV;
2027
2028         count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2029                                                         &edge_port->ep_lock);
2030         edge_send(tty);
2031
2032         return count;
2033 }
2034
2035 static void edge_send(struct tty_struct *tty)
2036 {
2037         struct usb_serial_port *port = tty->driver_data;
2038         int count, result;
2039         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2040         unsigned long flags;
2041
2042         spin_lock_irqsave(&edge_port->ep_lock, flags);
2043
2044         if (edge_port->ep_write_urb_in_use) {
2045                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2046                 return;
2047         }
2048
2049         count = kfifo_out(&edge_port->write_fifo,
2050                                 port->write_urb->transfer_buffer,
2051                                 port->bulk_out_size);
2052
2053         if (count == 0) {
2054                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2055                 return;
2056         }
2057
2058         edge_port->ep_write_urb_in_use = 1;
2059
2060         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2061
2062         usb_serial_debug_data(debug, &port->dev, __func__, count,
2063                                 port->write_urb->transfer_buffer);
2064
2065         /* set up our urb */
2066         port->write_urb->transfer_buffer_length = count;
2067
2068         /* send the data out the bulk port */
2069         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2070         if (result) {
2071                 dev_err_console(port,
2072                         "%s - failed submitting write urb, error %d\n",
2073                                 __func__, result);
2074                 edge_port->ep_write_urb_in_use = 0;
2075                 /* TODO: reschedule edge_send */
2076         } else
2077                 edge_port->icount.tx += count;
2078
2079         /* wakeup any process waiting for writes to complete */
2080         /* there is now more room in the buffer for new writes */
2081         if (tty)
2082                 tty_wakeup(tty);
2083 }
2084
2085 static int edge_write_room(struct tty_struct *tty)
2086 {
2087         struct usb_serial_port *port = tty->driver_data;
2088         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2089         int room = 0;
2090         unsigned long flags;
2091
2092         if (edge_port == NULL)
2093                 return 0;
2094         if (edge_port->close_pending == 1)
2095                 return 0;
2096
2097         spin_lock_irqsave(&edge_port->ep_lock, flags);
2098         room = kfifo_avail(&edge_port->write_fifo);
2099         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2100
2101         dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
2102         return room;
2103 }
2104
2105 static int edge_chars_in_buffer(struct tty_struct *tty)
2106 {
2107         struct usb_serial_port *port = tty->driver_data;
2108         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2109         int chars = 0;
2110         unsigned long flags;
2111
2112         if (edge_port == NULL)
2113                 return 0;
2114         if (edge_port->close_pending == 1)
2115                 return 0;
2116
2117         spin_lock_irqsave(&edge_port->ep_lock, flags);
2118         chars = kfifo_len(&edge_port->write_fifo);
2119         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2120
2121         dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2122         return chars;
2123 }
2124
2125 static void edge_throttle(struct tty_struct *tty)
2126 {
2127         struct usb_serial_port *port = tty->driver_data;
2128         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2129         int status;
2130
2131         if (edge_port == NULL)
2132                 return;
2133
2134         /* if we are implementing XON/XOFF, send the stop character */
2135         if (I_IXOFF(tty)) {
2136                 unsigned char stop_char = STOP_CHAR(tty);
2137                 status = edge_write(tty, port, &stop_char, 1);
2138                 if (status <= 0) {
2139                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2140                 }
2141         }
2142
2143         /* if we are implementing RTS/CTS, stop reads */
2144         /* and the Edgeport will clear the RTS line */
2145         if (C_CRTSCTS(tty))
2146                 stop_read(edge_port);
2147
2148 }
2149
2150 static void edge_unthrottle(struct tty_struct *tty)
2151 {
2152         struct usb_serial_port *port = tty->driver_data;
2153         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2154         int status;
2155
2156         if (edge_port == NULL)
2157                 return;
2158
2159         /* if we are implementing XON/XOFF, send the start character */
2160         if (I_IXOFF(tty)) {
2161                 unsigned char start_char = START_CHAR(tty);
2162                 status = edge_write(tty, port, &start_char, 1);
2163                 if (status <= 0) {
2164                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2165                 }
2166         }
2167         /* if we are implementing RTS/CTS, restart reads */
2168         /* are the Edgeport will assert the RTS line */
2169         if (C_CRTSCTS(tty)) {
2170                 status = restart_read(edge_port);
2171                 if (status)
2172                         dev_err(&port->dev,
2173                                 "%s - read bulk usb_submit_urb failed: %d\n",
2174                                                         __func__, status);
2175         }
2176
2177 }
2178
2179 static void stop_read(struct edgeport_port *edge_port)
2180 {
2181         unsigned long flags;
2182
2183         spin_lock_irqsave(&edge_port->ep_lock, flags);
2184
2185         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2186                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2187         edge_port->shadow_mcr &= ~MCR_RTS;
2188
2189         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2190 }
2191
2192 static int restart_read(struct edgeport_port *edge_port)
2193 {
2194         struct urb *urb;
2195         int status = 0;
2196         unsigned long flags;
2197
2198         spin_lock_irqsave(&edge_port->ep_lock, flags);
2199
2200         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2201                 urb = edge_port->port->read_urb;
2202                 status = usb_submit_urb(urb, GFP_ATOMIC);
2203         }
2204         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2205         edge_port->shadow_mcr |= MCR_RTS;
2206
2207         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2208
2209         return status;
2210 }
2211
2212 static void change_port_settings(struct tty_struct *tty,
2213                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2214 {
2215         struct device *dev = &edge_port->port->dev;
2216         struct ump_uart_config *config;
2217         int baud;
2218         unsigned cflag;
2219         int status;
2220         int port_number = edge_port->port->number -
2221                                         edge_port->port->serial->minor;
2222
2223         dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number);
2224
2225         config = kmalloc (sizeof (*config), GFP_KERNEL);
2226         if (!config) {
2227                 *tty->termios = *old_termios;
2228                 dev_err(dev, "%s - out of memory\n", __func__);
2229                 return;
2230         }
2231
2232         cflag = tty->termios->c_cflag;
2233
2234         config->wFlags = 0;
2235
2236         /* These flags must be set */
2237         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2238         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2239         config->bUartMode = (__u8)(edge_port->bUartMode);
2240
2241         switch (cflag & CSIZE) {
2242         case CS5:
2243                     config->bDataBits = UMP_UART_CHAR5BITS;
2244                     dev_dbg(dev, "%s - data bits = 5\n", __func__);
2245                     break;
2246         case CS6:
2247                     config->bDataBits = UMP_UART_CHAR6BITS;
2248                     dev_dbg(dev, "%s - data bits = 6\n", __func__);
2249                     break;
2250         case CS7:
2251                     config->bDataBits = UMP_UART_CHAR7BITS;
2252                     dev_dbg(dev, "%s - data bits = 7\n", __func__);
2253                     break;
2254         default:
2255         case CS8:
2256                     config->bDataBits = UMP_UART_CHAR8BITS;
2257                     dev_dbg(dev, "%s - data bits = 8\n", __func__);
2258                             break;
2259         }
2260
2261         if (cflag & PARENB) {
2262                 if (cflag & PARODD) {
2263                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2264                         config->bParity = UMP_UART_ODDPARITY;
2265                         dev_dbg(dev, "%s - parity = odd\n", __func__);
2266                 } else {
2267                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2268                         config->bParity = UMP_UART_EVENPARITY;
2269                         dev_dbg(dev, "%s - parity = even\n", __func__);
2270                 }
2271         } else {
2272                 config->bParity = UMP_UART_NOPARITY;
2273                 dev_dbg(dev, "%s - parity = none\n", __func__);
2274         }
2275
2276         if (cflag & CSTOPB) {
2277                 config->bStopBits = UMP_UART_STOPBIT2;
2278                 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2279         } else {
2280                 config->bStopBits = UMP_UART_STOPBIT1;
2281                 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2282         }
2283
2284         /* figure out the flow control settings */
2285         if (cflag & CRTSCTS) {
2286                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2287                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2288                 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2289         } else {
2290                 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2291                 tty->hw_stopped = 0;
2292                 restart_read(edge_port);
2293         }
2294
2295         /* if we are implementing XON/XOFF, set the start and stop
2296            character in the device */
2297         config->cXon  = START_CHAR(tty);
2298         config->cXoff = STOP_CHAR(tty);
2299
2300         /* if we are implementing INBOUND XON/XOFF */
2301         if (I_IXOFF(tty)) {
2302                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2303                 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2304                         __func__, config->cXon, config->cXoff);
2305         } else
2306                 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2307
2308         /* if we are implementing OUTBOUND XON/XOFF */
2309         if (I_IXON(tty)) {
2310                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2311                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2312                         __func__, config->cXon, config->cXoff);
2313         } else
2314                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2315
2316         tty->termios->c_cflag &= ~CMSPAR;
2317
2318         /* Round the baud rate */
2319         baud = tty_get_baud_rate(tty);
2320         if (!baud) {
2321                 /* pick a default, any default... */
2322                 baud = 9600;
2323         } else
2324                 tty_encode_baud_rate(tty, baud, baud);
2325
2326         edge_port->baud_rate = baud;
2327         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2328
2329         /* FIXME: Recompute actual baud from divisor here */
2330
2331         dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2332
2333         dev_dbg(dev, "wBaudRate:   %d\n", (int)(461550L / config->wBaudRate));
2334         dev_dbg(dev, "wFlags:    0x%x\n", config->wFlags);
2335         dev_dbg(dev, "bDataBits:   %d\n", config->bDataBits);
2336         dev_dbg(dev, "bParity:     %d\n", config->bParity);
2337         dev_dbg(dev, "bStopBits:   %d\n", config->bStopBits);
2338         dev_dbg(dev, "cXon:        %d\n", config->cXon);
2339         dev_dbg(dev, "cXoff:       %d\n", config->cXoff);
2340         dev_dbg(dev, "bUartMode:   %d\n", config->bUartMode);
2341
2342         /* move the word values into big endian mode */
2343         cpu_to_be16s(&config->wFlags);
2344         cpu_to_be16s(&config->wBaudRate);
2345
2346         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2347                                 (__u8)(UMPM_UART1_PORT + port_number),
2348                                 0, (__u8 *)config, sizeof(*config));
2349         if (status)
2350                 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2351                         __func__, status);
2352         kfree(config);
2353 }
2354
2355 static void edge_set_termios(struct tty_struct *tty,
2356                 struct usb_serial_port *port, struct ktermios *old_termios)
2357 {
2358         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2359         unsigned int cflag;
2360
2361         cflag = tty->termios->c_cflag;
2362
2363         dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2364                 tty->termios->c_cflag, tty->termios->c_iflag);
2365         dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2366                 old_termios->c_cflag, old_termios->c_iflag);
2367         dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
2368
2369         if (edge_port == NULL)
2370                 return;
2371         /* change the port settings to the new ones specified */
2372         change_port_settings(tty, edge_port, old_termios);
2373 }
2374
2375 static int edge_tiocmset(struct tty_struct *tty,
2376                                         unsigned int set, unsigned int clear)
2377 {
2378         struct usb_serial_port *port = tty->driver_data;
2379         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2380         unsigned int mcr;
2381         unsigned long flags;
2382
2383         spin_lock_irqsave(&edge_port->ep_lock, flags);
2384         mcr = edge_port->shadow_mcr;
2385         if (set & TIOCM_RTS)
2386                 mcr |= MCR_RTS;
2387         if (set & TIOCM_DTR)
2388                 mcr |= MCR_DTR;
2389         if (set & TIOCM_LOOP)
2390                 mcr |= MCR_LOOPBACK;
2391
2392         if (clear & TIOCM_RTS)
2393                 mcr &= ~MCR_RTS;
2394         if (clear & TIOCM_DTR)
2395                 mcr &= ~MCR_DTR;
2396         if (clear & TIOCM_LOOP)
2397                 mcr &= ~MCR_LOOPBACK;
2398
2399         edge_port->shadow_mcr = mcr;
2400         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2401
2402         restore_mcr(edge_port, mcr);
2403         return 0;
2404 }
2405
2406 static int edge_tiocmget(struct tty_struct *tty)
2407 {
2408         struct usb_serial_port *port = tty->driver_data;
2409         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2410         unsigned int result = 0;
2411         unsigned int msr;
2412         unsigned int mcr;
2413         unsigned long flags;
2414
2415         spin_lock_irqsave(&edge_port->ep_lock, flags);
2416
2417         msr = edge_port->shadow_msr;
2418         mcr = edge_port->shadow_mcr;
2419         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2420                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2421                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2422                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2423                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2424                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2425
2426
2427         dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2428         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2429
2430         return result;
2431 }
2432
2433 static int edge_get_icount(struct tty_struct *tty,
2434                                 struct serial_icounter_struct *icount)
2435 {
2436         struct usb_serial_port *port = tty->driver_data;
2437         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2438         struct async_icount *ic = &edge_port->icount;
2439
2440         icount->cts = ic->cts;
2441         icount->dsr = ic->dsr;
2442         icount->rng = ic->rng;
2443         icount->dcd = ic->dcd;
2444         icount->tx = ic->tx;
2445         icount->rx = ic->rx;
2446         icount->frame = ic->frame;
2447         icount->parity = ic->parity;
2448         icount->overrun = ic->overrun;
2449         icount->brk = ic->brk;
2450         icount->buf_overrun = ic->buf_overrun;
2451         return 0;
2452 }
2453
2454 static int get_serial_info(struct edgeport_port *edge_port,
2455                                 struct serial_struct __user *retinfo)
2456 {
2457         struct serial_struct tmp;
2458
2459         if (!retinfo)
2460                 return -EFAULT;
2461
2462         memset(&tmp, 0, sizeof(tmp));
2463
2464         tmp.type                = PORT_16550A;
2465         tmp.line                = edge_port->port->serial->minor;
2466         tmp.port                = edge_port->port->number;
2467         tmp.irq                 = 0;
2468         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2469         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2470         tmp.baud_base           = 9600;
2471         tmp.close_delay         = 5*HZ;
2472         tmp.closing_wait        = closing_wait;
2473
2474         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2475                 return -EFAULT;
2476         return 0;
2477 }
2478
2479 static int edge_ioctl(struct tty_struct *tty,
2480                                         unsigned int cmd, unsigned long arg)
2481 {
2482         struct usb_serial_port *port = tty->driver_data;
2483         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2484         struct async_icount cnow;
2485         struct async_icount cprev;
2486
2487         dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd);
2488
2489         switch (cmd) {
2490         case TIOCGSERIAL:
2491                 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2492                 return get_serial_info(edge_port,
2493                                 (struct serial_struct __user *) arg);
2494         case TIOCMIWAIT:
2495                 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__);
2496                 cprev = edge_port->icount;
2497                 while (1) {
2498                         interruptible_sleep_on(&edge_port->delta_msr_wait);
2499                         /* see if a signal did it */
2500                         if (signal_pending(current))
2501                                 return -ERESTARTSYS;
2502                         cnow = edge_port->icount;
2503                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2504                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2505                                 return -EIO; /* no change => error */
2506                         if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2507                             ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2508                             ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2509                             ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2510                                 return 0;
2511                         }
2512                         cprev = cnow;
2513                 }
2514                 /* not reached */
2515                 break;
2516         }
2517         return -ENOIOCTLCMD;
2518 }
2519
2520 static void edge_break(struct tty_struct *tty, int break_state)
2521 {
2522         struct usb_serial_port *port = tty->driver_data;
2523         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2524         int status;
2525         int bv = 0;     /* Off */
2526
2527         /* chase the port close */
2528         chase_port(edge_port, 0, 0);
2529
2530         if (break_state == -1)
2531                 bv = 1; /* On */
2532         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2533         if (status)
2534                 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2535                         __func__, status);
2536 }
2537
2538 static int edge_startup(struct usb_serial *serial)
2539 {
2540         struct edgeport_serial *edge_serial;
2541         struct edgeport_port *edge_port;
2542         struct usb_device *dev;
2543         int status;
2544         int i;
2545
2546         dev = serial->dev;
2547
2548         /* create our private serial structure */
2549         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2550         if (edge_serial == NULL) {
2551                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2552                 return -ENOMEM;
2553         }
2554         mutex_init(&edge_serial->es_lock);
2555         edge_serial->serial = serial;
2556         usb_set_serial_data(serial, edge_serial);
2557
2558         status = download_fw(edge_serial);
2559         if (status) {
2560                 kfree(edge_serial);
2561                 return status;
2562         }
2563
2564         /* set up our port private structures */
2565         for (i = 0; i < serial->num_ports; ++i) {
2566                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2567                 if (edge_port == NULL) {
2568                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2569                                                                 __func__);
2570                         goto cleanup;
2571                 }
2572                 spin_lock_init(&edge_port->ep_lock);
2573                 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2574                                                                 GFP_KERNEL)) {
2575                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2576                                                                 __func__);
2577                         kfree(edge_port);
2578                         goto cleanup;
2579                 }
2580                 edge_port->port = serial->port[i];
2581                 edge_port->edge_serial = edge_serial;
2582                 usb_set_serial_port_data(serial->port[i], edge_port);
2583                 edge_port->bUartMode = default_uart_mode;
2584         }
2585
2586         return 0;
2587
2588 cleanup:
2589         for (--i; i >= 0; --i) {
2590                 edge_port = usb_get_serial_port_data(serial->port[i]);
2591                 kfifo_free(&edge_port->write_fifo);
2592                 kfree(edge_port);
2593                 usb_set_serial_port_data(serial->port[i], NULL);
2594         }
2595         kfree(edge_serial);
2596         usb_set_serial_data(serial, NULL);
2597         return -ENOMEM;
2598 }
2599
2600 static void edge_disconnect(struct usb_serial *serial)
2601 {
2602 }
2603
2604 static void edge_release(struct usb_serial *serial)
2605 {
2606         int i;
2607         struct edgeport_port *edge_port;
2608
2609         for (i = 0; i < serial->num_ports; ++i) {
2610                 edge_port = usb_get_serial_port_data(serial->port[i]);
2611                 kfifo_free(&edge_port->write_fifo);
2612                 kfree(edge_port);
2613         }
2614         kfree(usb_get_serial_data(serial));
2615 }
2616
2617
2618 /* Sysfs Attributes */
2619
2620 static ssize_t show_uart_mode(struct device *dev,
2621         struct device_attribute *attr, char *buf)
2622 {
2623         struct usb_serial_port *port = to_usb_serial_port(dev);
2624         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2625
2626         return sprintf(buf, "%d\n", edge_port->bUartMode);
2627 }
2628
2629 static ssize_t store_uart_mode(struct device *dev,
2630         struct device_attribute *attr, const char *valbuf, size_t count)
2631 {
2632         struct usb_serial_port *port = to_usb_serial_port(dev);
2633         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2634         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2635
2636         dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2637
2638         if (v < 256)
2639                 edge_port->bUartMode = v;
2640         else
2641                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2642
2643         return count;
2644 }
2645
2646 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2647                                                         store_uart_mode);
2648
2649 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2650 {
2651         return device_create_file(&port->dev, &dev_attr_uart_mode);
2652 }
2653
2654 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2655 {
2656         device_remove_file(&port->dev, &dev_attr_uart_mode);
2657         return 0;
2658 }
2659
2660
2661 static struct usb_serial_driver edgeport_1port_device = {
2662         .driver = {
2663                 .owner          = THIS_MODULE,
2664                 .name           = "edgeport_ti_1",
2665         },
2666         .description            = "Edgeport TI 1 port adapter",
2667         .id_table               = edgeport_1port_id_table,
2668         .num_ports              = 1,
2669         .open                   = edge_open,
2670         .close                  = edge_close,
2671         .throttle               = edge_throttle,
2672         .unthrottle             = edge_unthrottle,
2673         .attach                 = edge_startup,
2674         .disconnect             = edge_disconnect,
2675         .release                = edge_release,
2676         .port_probe             = edge_create_sysfs_attrs,
2677         .port_remove            = edge_remove_sysfs_attrs,
2678         .ioctl                  = edge_ioctl,
2679         .set_termios            = edge_set_termios,
2680         .tiocmget               = edge_tiocmget,
2681         .tiocmset               = edge_tiocmset,
2682         .get_icount             = edge_get_icount,
2683         .write                  = edge_write,
2684         .write_room             = edge_write_room,
2685         .chars_in_buffer        = edge_chars_in_buffer,
2686         .break_ctl              = edge_break,
2687         .read_int_callback      = edge_interrupt_callback,
2688         .read_bulk_callback     = edge_bulk_in_callback,
2689         .write_bulk_callback    = edge_bulk_out_callback,
2690 };
2691
2692 static struct usb_serial_driver edgeport_2port_device = {
2693         .driver = {
2694                 .owner          = THIS_MODULE,
2695                 .name           = "edgeport_ti_2",
2696         },
2697         .description            = "Edgeport TI 2 port adapter",
2698         .id_table               = edgeport_2port_id_table,
2699         .num_ports              = 2,
2700         .open                   = edge_open,
2701         .close                  = edge_close,
2702         .throttle               = edge_throttle,
2703         .unthrottle             = edge_unthrottle,
2704         .attach                 = edge_startup,
2705         .disconnect             = edge_disconnect,
2706         .release                = edge_release,
2707         .port_probe             = edge_create_sysfs_attrs,
2708         .port_remove            = edge_remove_sysfs_attrs,
2709         .ioctl                  = edge_ioctl,
2710         .set_termios            = edge_set_termios,
2711         .tiocmget               = edge_tiocmget,
2712         .tiocmset               = edge_tiocmset,
2713         .write                  = edge_write,
2714         .write_room             = edge_write_room,
2715         .chars_in_buffer        = edge_chars_in_buffer,
2716         .break_ctl              = edge_break,
2717         .read_int_callback      = edge_interrupt_callback,
2718         .read_bulk_callback     = edge_bulk_in_callback,
2719         .write_bulk_callback    = edge_bulk_out_callback,
2720 };
2721
2722 static struct usb_serial_driver * const serial_drivers[] = {
2723         &edgeport_1port_device, &edgeport_2port_device, NULL
2724 };
2725
2726 module_usb_serial_driver(serial_drivers, id_table_combined);
2727
2728 MODULE_AUTHOR(DRIVER_AUTHOR);
2729 MODULE_DESCRIPTION(DRIVER_DESC);
2730 MODULE_LICENSE("GPL");
2731 MODULE_FIRMWARE("edgeport/down3.bin");
2732
2733 module_param(debug, bool, S_IRUGO | S_IWUSR);
2734 MODULE_PARM_DESC(debug, "Debug enabled or not");
2735
2736 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2737 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2738
2739 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2740 MODULE_PARM_DESC(ignore_cpu_rev,
2741                         "Ignore the cpu revision when connecting to a device");
2742
2743 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2744 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");