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 struct usb_driver io_driver = {
 201         .name =         "io_ti",
 202         .probe =        usb_serial_probe,
 203         .disconnect =   usb_serial_disconnect,
 204         .id_table =     id_table_combined,
 205 };
 206
 207
 208 static unsigned char OperationalMajorVersion;
 209 static unsigned char OperationalMinorVersion;
 210 static unsigned short OperationalBuildNumber;
 211
 212 static bool debug;
 213
 214 static int closing_wait = EDGE_CLOSING_WAIT;
 215 static bool ignore_cpu_rev;
 216 static int default_uart_mode;           /* RS232 */
 217
 218 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
 219                           unsigned char *data, int length);
 220
 221 static void stop_read(struct edgeport_port *edge_port);
 222 static int restart_read(struct edgeport_port *edge_port);
 223
 224 static void edge_set_termios(struct tty_struct *tty,
 225                 struct usb_serial_port *port, struct ktermios *old_termios);
 226 static void edge_send(struct tty_struct *tty);
 227
 228 /* sysfs attributes */
 229 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
 230 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
 231
 232
 233 static int ti_vread_sync(struct usb_device *dev, __u8 request,
 234                                 __u16 value, __u16 index, u8 *data, int size)
 235 {
 236         int status;
 237
 238         status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
 239                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
 240                         value, index, data, size, 1000);
 241         if (status < 0)
 242                 return status;
 243         if (status != size) {
 244                 dbg("%s - wanted to write %d, but only wrote %d",
 245                                              __func__, size, status);
 246                 return -ECOMM;
 247         }
 248         return 0;
 249 }
 250
 251 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
 252                                 __u16 value, __u16 index, u8 *data, int size)
 253 {
 254         int status;
 255
 256         status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
 257                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
 258                         value, index, data, size, 1000);
 259         if (status < 0)
 260                 return status;
 261         if (status != size) {
 262                 dbg("%s - wanted to write %d, but only wrote %d",
 263                      __func__, size, status);
 264                 return -ECOMM;
 265         }
 266         return 0;
 267 }
 268
 269 static int send_cmd(struct usb_device *dev, __u8 command,
 270                                 __u8 moduleid, __u16 value, u8 *data,
 271                                 int size)
 272 {
 273         return ti_vsend_sync(dev, command, value, moduleid, data, size);
 274 }
 275
 276 /* clear tx/rx buffers and fifo in TI UMP */
 277 static int purge_port(struct usb_serial_port *port, __u16 mask)
 278 {
 279         int port_number = port->number - port->serial->minor;
 280
 281         dbg("%s - port %d, mask %x", __func__, port_number, mask);
 282
 283         return send_cmd(port->serial->dev,
 284                                         UMPC_PURGE_PORT,
 285                                         (__u8)(UMPM_UART1_PORT + port_number),
 286                                         mask,
 287                                         NULL,
 288                                         0);
 289 }
 290
 291 /**
 292  * read_download_mem - Read edgeport memory from TI chip
 293  * @dev: usb device pointer
 294  * @start_address: Device CPU address at which to read
 295  * @length: Length of above data
 296  * @address_type: Can read both XDATA and I2C
 297  * @buffer: pointer to input data buffer
 298  */
 299 static int read_download_mem(struct usb_device *dev, int start_address,
 300                                 int length, __u8 address_type, __u8 *buffer)
 301 {
 302         int status = 0;
 303         __u8 read_length;
 304         __be16 be_start_address;
 305
 306         dbg("%s - @ %x for %d", __func__, start_address, length);
 307
 308         /* Read in blocks of 64 bytes
 309          * (TI firmware can't handle more than 64 byte reads)
 310          */
 311         while (length) {
 312                 if (length > 64)
 313                         read_length = 64;
 314                 else
 315                         read_length = (__u8)length;
 316
 317                 if (read_length > 1) {
 318                         dbg("%s - @ %x for %d", __func__,
 319                              start_address, read_length);
 320                 }
 321                 be_start_address = cpu_to_be16(start_address);
 322                 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
 323                                         (__u16)address_type,
 324                                         (__force __u16)be_start_address,
 325                                         buffer, read_length);
 326
 327                 if (status) {
 328                         dbg("%s - ERROR %x", __func__, status);
 329                         return status;
 330                 }
 331
 332                 if (read_length > 1)
 333                         usb_serial_debug_data(debug, &dev->dev, __func__,
 334                                               read_length, buffer);
 335
 336                 /* Update pointers/length */
 337                 start_address += read_length;
 338                 buffer += read_length;
 339                 length -= read_length;
 340         }
 341
 342         return status;
 343 }
 344
 345 static int read_ram(struct usb_device *dev, int start_address,
 346                                                 int length, __u8 *buffer)
 347 {
 348         return read_download_mem(dev, start_address, length,
 349                                         DTK_ADDR_SPACE_XDATA, buffer);
 350 }
 351
 352 /* Read edgeport memory to a given block */
 353 static int read_boot_mem(struct edgeport_serial *serial,
 354                                 int start_address, int length, __u8 *buffer)
 355 {
 356         int status = 0;
 357         int i;
 358
 359         for (i = 0; i < length; i++) {
 360                 status = ti_vread_sync(serial->serial->dev,
 361                                 UMPC_MEMORY_READ, serial->TI_I2C_Type,
 362                                 (__u16)(start_address+i), &buffer[i], 0x01);
 363                 if (status) {
 364                         dbg("%s - ERROR %x", __func__, status);
 365                         return status;
 366                 }
 367         }
 368
 369         dbg("%s - start_address = %x, length = %d",
 370                                         __func__, start_address, length);
 371         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 372                                         __func__, length, buffer);
 373
 374         serial->TiReadI2C = 1;
 375
 376         return status;
 377 }
 378
 379 /* Write given block to TI EPROM memory */
 380 static int write_boot_mem(struct edgeport_serial *serial,
 381                                 int start_address, int length, __u8 *buffer)
 382 {
 383         int status = 0;
 384         int i;
 385         u8 *temp;
 386
 387         /* Must do a read before write */
 388         if (!serial->TiReadI2C) {
 389                 temp = kmalloc(1, GFP_KERNEL);
 390                 if (!temp) {
 391                         dev_err(&serial->serial->dev->dev,
 392                                         "%s - out of memory\n", __func__);
 393                         return -ENOMEM;
 394                 }
 395                 status = read_boot_mem(serial, 0, 1, temp);
 396                 kfree(temp);
 397                 if (status)
 398                         return status;
 399         }
 400
 401         for (i = 0; i < length; ++i) {
 402                 status = ti_vsend_sync(serial->serial->dev,
 403                                 UMPC_MEMORY_WRITE, buffer[i],
 404                                 (__u16)(i + start_address), NULL, 0);
 405                 if (status)
 406                         return status;
 407         }
 408
 409         dbg("%s - start_sddr = %x, length = %d",
 410                                         __func__, start_address, length);
 411         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 412                                         __func__, length, buffer);
 413
 414         return status;
 415 }
 416
 417
 418 /* Write edgeport I2C memory to TI chip */
 419 static int write_i2c_mem(struct edgeport_serial *serial,
 420                 int start_address, int length, __u8 address_type, __u8 *buffer)
 421 {
 422         int status = 0;
 423         int write_length;
 424         __be16 be_start_address;
 425
 426         /* We can only send a maximum of 1 aligned byte page at a time */
 427
 428         /* calculate the number of bytes left in the first page */
 429         write_length = EPROM_PAGE_SIZE -
 430                                 (start_address & (EPROM_PAGE_SIZE - 1));
 431
 432         if (write_length > length)
 433                 write_length = length;
 434
 435         dbg("%s - BytesInFirstPage Addr = %x, length = %d",
 436                                         __func__, start_address, write_length);
 437         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 438                                                 __func__, write_length, buffer);
 439
 440         /* Write first page */
 441         be_start_address = cpu_to_be16(start_address);
 442         status = ti_vsend_sync(serial->serial->dev,
 443                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 444                                 (__force __u16)be_start_address,
 445                                 buffer, write_length);
 446         if (status) {
 447                 dbg("%s - ERROR %d", __func__, status);
 448                 return status;
 449         }
 450
 451         length          -= write_length;
 452         start_address   += write_length;
 453         buffer          += write_length;
 454
 455         /* We should be aligned now -- can write
 456            max page size bytes at a time */
 457         while (length) {
 458                 if (length > EPROM_PAGE_SIZE)
 459                         write_length = EPROM_PAGE_SIZE;
 460                 else
 461                         write_length = length;
 462
 463                 dbg("%s - Page Write Addr = %x, length = %d",
 464                                         __func__, start_address, write_length);
 465                 usb_serial_debug_data(debug, &serial->serial->dev->dev,
 466                                         __func__, write_length, buffer);
 467
 468                 /* Write next page */
 469                 be_start_address = cpu_to_be16(start_address);
 470                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 471                                 (__u16)address_type,
 472                                 (__force __u16)be_start_address,
 473                                 buffer, write_length);
 474                 if (status) {
 475                         dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
 476                                         __func__, status);
 477                         return status;
 478                 }
 479
 480                 length          -= write_length;
 481                 start_address   += write_length;
 482                 buffer          += write_length;
 483         }
 484         return status;
 485 }
 486
 487 /* Examine the UMP DMA registers and LSR
 488  *
 489  * Check the MSBit of the X and Y DMA byte count registers.
 490  * A zero in this bit indicates that the TX DMA buffers are empty
 491  * then check the TX Empty bit in the UART.
 492  */
 493 static int tx_active(struct edgeport_port *port)
 494 {
 495         int status;
 496         struct out_endpoint_desc_block *oedb;
 497         __u8 *lsr;
 498         int bytes_left = 0;
 499
 500         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 501         if (!oedb) {
 502                 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
 503                 return -ENOMEM;
 504         }
 505
 506         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 507                                            as not all platforms can do DMA
 508                                            from stack */
 509         if (!lsr) {
 510                 kfree(oedb);
 511                 return -ENOMEM;
 512         }
 513         /* Read the DMA Count Registers */
 514         status = read_ram(port->port->serial->dev, port->dma_address,
 515                                                 sizeof(*oedb), (void *)oedb);
 516         if (status)
 517                 goto exit_is_tx_active;
 518
 519         dbg("%s - XByteCount    0x%X", __func__, oedb->XByteCount);
 520
 521         /* and the LSR */
 522         status = read_ram(port->port->serial->dev,
 523                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 524
 525         if (status)
 526                 goto exit_is_tx_active;
 527         dbg("%s - LSR = 0x%X", __func__, *lsr);
 528
 529         /* If either buffer has data or we are transmitting then return TRUE */
 530         if ((oedb->XByteCount & 0x80) != 0)
 531                 bytes_left += 64;
 532
 533         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 534                 bytes_left += 1;
 535
 536         /* We return Not Active if we get any kind of error */
 537 exit_is_tx_active:
 538         dbg("%s - return %d", __func__, bytes_left);
 539
 540         kfree(lsr);
 541         kfree(oedb);
 542         return bytes_left;
 543 }
 544
 545 static void chase_port(struct edgeport_port *port, unsigned long timeout,
 546                                                                 int flush)
 547 {
 548         int baud_rate;
 549         struct tty_struct *tty = tty_port_tty_get(&port->port->port);
 550         wait_queue_t wait;
 551         unsigned long flags;
 552
 553         if (!timeout)
 554                 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
 555
 556         /* wait for data to drain from the buffer */
 557         spin_lock_irqsave(&port->ep_lock, flags);
 558         init_waitqueue_entry(&wait, current);
 559         add_wait_queue(&tty->write_wait, &wait);
 560         for (;;) {
 561                 set_current_state(TASK_INTERRUPTIBLE);
 562                 if (kfifo_len(&port->write_fifo) == 0
 563                 || timeout == 0 || signal_pending(current)
 564                 || !usb_get_intfdata(port->port->serial->interface))
 565                         /* disconnect */
 566                         break;
 567                 spin_unlock_irqrestore(&port->ep_lock, flags);
 568                 timeout = schedule_timeout(timeout);
 569                 spin_lock_irqsave(&port->ep_lock, flags);
 570         }
 571         set_current_state(TASK_RUNNING);
 572         remove_wait_queue(&tty->write_wait, &wait);
 573         if (flush)
 574                 kfifo_reset_out(&port->write_fifo);
 575         spin_unlock_irqrestore(&port->ep_lock, flags);
 576         tty_kref_put(tty);
 577
 578         /* wait for data to drain from the device */
 579         timeout += jiffies;
 580         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
 581         && usb_get_intfdata(port->port->serial->interface)) {
 582                 /* not disconnected */
 583                 if (!tx_active(port))
 584                         break;
 585                 msleep(10);
 586         }
 587
 588         /* disconnected */
 589         if (!usb_get_intfdata(port->port->serial->interface))
 590                 return;
 591
 592         /* wait one more character time, based on baud rate */
 593         /* (tx_active doesn't seem to wait for the last byte) */
 594         baud_rate = port->baud_rate;
 595         if (baud_rate == 0)
 596                 baud_rate = 50;
 597         msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
 598 }
 599
 600 static int choose_config(struct usb_device *dev)
 601 {
 602         /*
 603          * There may be multiple configurations on this device, in which case
 604          * we would need to read and parse all of them to find out which one
 605          * we want. However, we just support one config at this point,
 606          * configuration # 1, which is Config Descriptor 0.
 607          */
 608
 609         dbg("%s - Number of Interfaces = %d",
 610                                 __func__, dev->config->desc.bNumInterfaces);
 611         dbg("%s - MAX Power            = %d",
 612                                 __func__, dev->config->desc.bMaxPower * 2);
 613
 614         if (dev->config->desc.bNumInterfaces != 1) {
 615                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
 616                                                                 __func__);
 617                 return -ENODEV;
 618         }
 619
 620         return 0;
 621 }
 622
 623 static int read_rom(struct edgeport_serial *serial,
 624                                 int start_address, int length, __u8 *buffer)
 625 {
 626         int status;
 627
 628         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 629                 status = read_download_mem(serial->serial->dev,
 630                                                start_address,
 631                                                length,
 632                                                serial->TI_I2C_Type,
 633                                                buffer);
 634         } else {
 635                 status = read_boot_mem(serial, start_address, length,
 636                                                                 buffer);
 637         }
 638         return status;
 639 }
 640
 641 static int write_rom(struct edgeport_serial *serial, int start_address,
 642                                                 int length, __u8 *buffer)
 643 {
 644         if (serial->product_info.TiMode == TI_MODE_BOOT)
 645                 return write_boot_mem(serial, start_address, length,
 646                                                                 buffer);
 647
 648         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 649                 return write_i2c_mem(serial, start_address, length,
 650                                                 serial->TI_I2C_Type, buffer);
 651         return -EINVAL;
 652 }
 653
 654
 655
 656 /* Read a descriptor header from I2C based on type */
 657 static int get_descriptor_addr(struct edgeport_serial *serial,
 658                                 int desc_type, struct ti_i2c_desc *rom_desc)
 659 {
 660         int start_address;
 661         int status;
 662
 663         /* Search for requested descriptor in I2C */
 664         start_address = 2;
 665         do {
 666                 status = read_rom(serial,
 667                                    start_address,
 668                                    sizeof(struct ti_i2c_desc),
 669                                    (__u8 *)rom_desc);
 670                 if (status)
 671                         return 0;
 672
 673                 if (rom_desc->Type == desc_type)
 674                         return start_address;
 675
 676                 start_address = start_address + sizeof(struct ti_i2c_desc)
 677                                                         + rom_desc->Size;
 678
 679         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 680
 681         return 0;
 682 }
 683
 684 /* Validate descriptor checksum */
 685 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 686 {
 687         __u16 i;
 688         __u8 cs = 0;
 689
 690         for (i = 0; i < rom_desc->Size; i++)
 691                 cs = (__u8)(cs + buffer[i]);
 692
 693         if (cs != rom_desc->CheckSum) {
 694                 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 695                 return -EINVAL;
 696         }
 697         return 0;
 698 }
 699
 700 /* Make sure that the I2C image is good */
 701 static int check_i2c_image(struct edgeport_serial *serial)
 702 {
 703         struct device *dev = &serial->serial->dev->dev;
 704         int status = 0;
 705         struct ti_i2c_desc *rom_desc;
 706         int start_address = 2;
 707         __u8 *buffer;
 708         __u16 ttype;
 709
 710         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 711         if (!rom_desc) {
 712                 dev_err(dev, "%s - out of memory\n", __func__);
 713                 return -ENOMEM;
 714         }
 715         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 716         if (!buffer) {
 717                 dev_err(dev, "%s - out of memory when allocating buffer\n",
 718                                                                 __func__);
 719                 kfree(rom_desc);
 720                 return -ENOMEM;
 721         }
 722
 723         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 724         status = read_rom(serial, 0, 1, buffer);
 725         if (status)
 726                 goto out;
 727
 728         if (*buffer != UMP5152 && *buffer != UMP3410) {
 729                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 730                 status = -ENODEV;
 731                 goto out;
 732         }
 733
 734         do {
 735                 /* Validate the I2C */
 736                 status = read_rom(serial,
 737                                 start_address,
 738                                 sizeof(struct ti_i2c_desc),
 739                                 (__u8 *)rom_desc);
 740                 if (status)
 741                         break;
 742
 743                 if ((start_address + sizeof(struct ti_i2c_desc) +
 744                                         rom_desc->Size) > TI_MAX_I2C_SIZE) {
 745                         status = -ENODEV;
 746                         dbg("%s - structure too big, erroring out.", __func__);
 747                         break;
 748                 }
 749
 750                 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
 751
 752                 /* Skip type 2 record */
 753                 ttype = rom_desc->Type & 0x0f;
 754                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 755                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 756                         /* Read the descriptor data */
 757                         status = read_rom(serial, start_address +
 758                                                 sizeof(struct ti_i2c_desc),
 759                                                 rom_desc->Size, buffer);
 760                         if (status)
 761                                 break;
 762
 763                         status = valid_csum(rom_desc, buffer);
 764                         if (status)
 765                                 break;
 766                 }
 767                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 768                                                                 rom_desc->Size;
 769
 770         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 771                                 (start_address < TI_MAX_I2C_SIZE));
 772
 773         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 774                                 (start_address > TI_MAX_I2C_SIZE))
 775                 status = -ENODEV;
 776
 777 out:
 778         kfree(buffer);
 779         kfree(rom_desc);
 780         return status;
 781 }
 782
 783 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 784 {
 785         int status;
 786         int start_address;
 787         struct ti_i2c_desc *rom_desc;
 788         struct edge_ti_manuf_descriptor *desc;
 789
 790         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 791         if (!rom_desc) {
 792                 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
 793                                                                 __func__);
 794                 return -ENOMEM;
 795         }
 796         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 797                                                                 rom_desc);
 798
 799         if (!start_address) {
 800                 dbg("%s - Edge Descriptor not found in I2C", __func__);
 801                 status = -ENODEV;
 802                 goto exit;
 803         }
 804
 805         /* Read the descriptor data */
 806         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 807                                                 rom_desc->Size, buffer);
 808         if (status)
 809                 goto exit;
 810
 811         status = valid_csum(rom_desc, buffer);
 812
 813         desc = (struct edge_ti_manuf_descriptor *)buffer;
 814         dbg("%s - IonConfig      0x%x", __func__, desc->IonConfig);
 815         dbg("%s - Version          %d", __func__, desc->Version);
 816         dbg("%s - Cpu/Board      0x%x", __func__, desc->CpuRev_BoardRev);
 817         dbg("%s - NumPorts         %d", __func__, desc->NumPorts);
 818         dbg("%s - NumVirtualPorts  %d", __func__, desc->NumVirtualPorts);
 819         dbg("%s - TotalPorts       %d", __func__, desc->TotalPorts);
 820
 821 exit:
 822         kfree(rom_desc);
 823         return status;
 824 }
 825
 826 /* Build firmware header used for firmware update */
 827 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 828 {
 829         __u8 *buffer;
 830         int buffer_size;
 831         int i;
 832         int err;
 833         __u8 cs = 0;
 834         struct ti_i2c_desc *i2c_header;
 835         struct ti_i2c_image_header *img_header;
 836         struct ti_i2c_firmware_rec *firmware_rec;
 837         const struct firmware *fw;
 838         const char *fw_name = "edgeport/down3.bin";
 839
 840         /* In order to update the I2C firmware we must change the type 2 record
 841          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 842          * Then while in boot mode, the driver will download the latest
 843          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 844          * device comes back up in download mode the driver will cause the new
 845          * firmware to be copied from the UMP Ram to I2C and the firmware will
 846          * update the record type from 0xf2 to 0x02.
 847          */
 848
 849         /* Allocate a 15.5k buffer + 2 bytes for version number
 850          * (Firmware Record) */
 851         buffer_size = (((1024 * 16) - 512 ) +
 852                         sizeof(struct ti_i2c_firmware_rec));
 853
 854         buffer = kmalloc(buffer_size, GFP_KERNEL);
 855         if (!buffer) {
 856                 dev_err(dev, "%s - out of memory\n", __func__);
 857                 return -ENOMEM;
 858         }
 859
 860         // Set entire image of 0xffs
 861         memset(buffer, 0xff, buffer_size);
 862
 863         err = request_firmware(&fw, fw_name, dev);
 864         if (err) {
 865                 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
 866                        fw_name, err);
 867                 kfree(buffer);
 868                 return err;
 869         }
 870
 871         /* Save Download Version Number */
 872         OperationalMajorVersion = fw->data[0];
 873         OperationalMinorVersion = fw->data[1];
 874         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 875
 876         /* Copy version number into firmware record */
 877         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 878
 879         firmware_rec->Ver_Major = OperationalMajorVersion;
 880         firmware_rec->Ver_Minor = OperationalMinorVersion;
 881
 882         /* Pointer to fw_down memory image */
 883         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 884
 885         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 886                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 887                 le16_to_cpu(img_header->Length));
 888
 889         release_firmware(fw);
 890
 891         for (i=0; i < buffer_size; i++) {
 892                 cs = (__u8)(cs + buffer[i]);
 893         }
 894
 895         kfree(buffer);
 896
 897         /* Build new header */
 898         i2c_header =  (struct ti_i2c_desc *)header;
 899         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 900
 901         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 902         i2c_header->Size        = (__u16)buffer_size;
 903         i2c_header->CheckSum    = cs;
 904         firmware_rec->Ver_Major = OperationalMajorVersion;
 905         firmware_rec->Ver_Minor = OperationalMinorVersion;
 906
 907         return 0;
 908 }
 909
 910 /* Try to figure out what type of I2c we have */
 911 static int i2c_type_bootmode(struct edgeport_serial *serial)
 912 {
 913         int status;
 914         u8 *data;
 915
 916         data = kmalloc(1, GFP_KERNEL);
 917         if (!data) {
 918                 dev_err(&serial->serial->dev->dev,
 919                                 "%s - out of memory\n", __func__);
 920                 return -ENOMEM;
 921         }
 922
 923         /* Try to read type 2 */
 924         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 925                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 926         if (status)
 927                 dbg("%s - read 2 status error = %d", __func__, status);
 928         else
 929                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 930         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 931                 dbg("%s - ROM_TYPE_II", __func__);
 932                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 933                 goto out;
 934         }
 935
 936         /* Try to read type 3 */
 937         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 938                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 939         if (status)
 940                 dbg("%s - read 3 status error = %d", __func__, status);
 941         else
 942                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 943         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 944                 dbg("%s - ROM_TYPE_III", __func__);
 945                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 946                 goto out;
 947         }
 948
 949         dbg("%s - Unknown", __func__);
 950         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 951         status = -ENODEV;
 952 out:
 953         kfree(data);
 954         return status;
 955 }
 956
 957 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 958                                                 int length, int *num_sent)
 959 {
 960         int status;
 961
 962         status = usb_bulk_msg(serial->dev,
 963                         usb_sndbulkpipe(serial->dev,
 964                                 serial->port[0]->bulk_out_endpointAddress),
 965                         buffer, length, num_sent, 1000);
 966         return status;
 967 }
 968
 969 /* Download given firmware image to the device (IN BOOT MODE) */
 970 static int download_code(struct edgeport_serial *serial, __u8 *image,
 971                                                         int image_length)
 972 {
 973         int status = 0;
 974         int pos;
 975         int transfer;
 976         int done;
 977
 978         /* Transfer firmware image */
 979         for (pos = 0; pos < image_length; ) {
 980                 /* Read the next buffer from file */
 981                 transfer = image_length - pos;
 982                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 983                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 984
 985                 /* Transfer data */
 986                 status = bulk_xfer(serial->serial, &image[pos],
 987                                                         transfer, &done);
 988                 if (status)
 989                         break;
 990                 /* Advance buffer pointer */
 991                 pos += done;
 992         }
 993
 994         return status;
 995 }
 996
 997 /* FIXME!!! */
 998 static int config_boot_dev(struct usb_device *dev)
 999 {
1000         return 0;
1001 }
1002
1003 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1004 {
1005         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1006 }
1007
1008 /**
1009  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1010  *
1011  * This routine downloads the main operating code into the TI5052, using the
1012  * boot code already burned into E2PROM or ROM.
1013  */
1014 static int download_fw(struct edgeport_serial *serial)
1015 {
1016         struct device *dev = &serial->serial->dev->dev;
1017         int status = 0;
1018         int start_address;
1019         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1020         struct usb_interface_descriptor *interface;
1021         int download_cur_ver;
1022         int download_new_ver;
1023
1024         /* This routine is entered by both the BOOT mode and the Download mode
1025          * We can determine which code is running by the reading the config
1026          * descriptor and if we have only one bulk pipe it is in boot mode
1027          */
1028         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1029
1030         /* Default to type 2 i2c */
1031         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1032
1033         status = choose_config(serial->serial->dev);
1034         if (status)
1035                 return status;
1036
1037         interface = &serial->serial->interface->cur_altsetting->desc;
1038         if (!interface) {
1039                 dev_err(dev, "%s - no interface set, error!\n", __func__);
1040                 return -ENODEV;
1041         }
1042
1043         /*
1044          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1045          * if we have more than one endpoint we are definitely in download
1046          * mode
1047          */
1048         if (interface->bNumEndpoints > 1)
1049                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1050         else
1051                 /* Otherwise we will remain in configuring mode */
1052                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1053
1054         /********************************************************************/
1055         /* Download Mode */
1056         /********************************************************************/
1057         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1058                 struct ti_i2c_desc *rom_desc;
1059
1060                 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1061
1062                 status = check_i2c_image(serial);
1063                 if (status) {
1064                         dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1065                         return status;
1066                 }
1067
1068                 /* Validate Hardware version number
1069                  * Read Manufacturing Descriptor from TI Based Edgeport
1070                  */
1071                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1072                 if (!ti_manuf_desc) {
1073                         dev_err(dev, "%s - out of memory.\n", __func__);
1074                         return -ENOMEM;
1075                 }
1076                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1077                 if (status) {
1078                         kfree(ti_manuf_desc);
1079                         return status;
1080                 }
1081
1082                 /* Check version number of ION descriptor */
1083                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1084                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1085                                 __func__, ti_cpu_rev(ti_manuf_desc));
1086                         kfree(ti_manuf_desc);
1087                         return -EINVAL;
1088                 }
1089
1090                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1091                 if (!rom_desc) {
1092                         dev_err(dev, "%s - out of memory.\n", __func__);
1093                         kfree(ti_manuf_desc);
1094                         return -ENOMEM;
1095                 }
1096
1097                 /* Search for type 2 record (firmware record) */
1098                 start_address = get_descriptor_addr(serial,
1099                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1100                 if (start_address != 0) {
1101                         struct ti_i2c_firmware_rec *firmware_version;
1102                         u8 *record;
1103
1104                         dbg("%s - Found Type FIRMWARE (Type 2) record",
1105                                                                 __func__);
1106
1107                         firmware_version = kmalloc(sizeof(*firmware_version),
1108                                                                 GFP_KERNEL);
1109                         if (!firmware_version) {
1110                                 dev_err(dev, "%s - out of memory.\n", __func__);
1111                                 kfree(rom_desc);
1112                                 kfree(ti_manuf_desc);
1113                                 return -ENOMEM;
1114                         }
1115
1116                         /* Validate version number
1117                          * Read the descriptor data
1118                          */
1119                         status = read_rom(serial, start_address +
1120                                         sizeof(struct ti_i2c_desc),
1121                                         sizeof(struct ti_i2c_firmware_rec),
1122                                         (__u8 *)firmware_version);
1123                         if (status) {
1124                                 kfree(firmware_version);
1125                                 kfree(rom_desc);
1126                                 kfree(ti_manuf_desc);
1127                                 return status;
1128                         }
1129
1130                         /* Check version number of download with current
1131                            version in I2c */
1132                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1133                                            (firmware_version->Ver_Minor);
1134                         download_new_ver = (OperationalMajorVersion << 8) +
1135                                            (OperationalMinorVersion);
1136
1137                         dbg("%s - >> FW Versions Device %d.%d  Driver %d.%d",
1138                             __func__,
1139                             firmware_version->Ver_Major,
1140                             firmware_version->Ver_Minor,
1141                             OperationalMajorVersion,
1142                             OperationalMinorVersion);
1143
1144                         /* Check if we have an old version in the I2C and
1145                            update if necessary */
1146                         if (download_cur_ver < download_new_ver) {
1147                                 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1148                                     __func__,
1149                                     firmware_version->Ver_Major,
1150                                     firmware_version->Ver_Minor,
1151                                     OperationalMajorVersion,
1152                                     OperationalMinorVersion);
1153
1154                                 record = kmalloc(1, GFP_KERNEL);
1155                                 if (!record) {
1156                                         dev_err(dev, "%s - out of memory.\n",
1157                                                         __func__);
1158                                         kfree(firmware_version);
1159                                         kfree(rom_desc);
1160                                         kfree(ti_manuf_desc);
1161                                         return -ENOMEM;
1162                                 }
1163                                 /* In order to update the I2C firmware we must
1164                                  * change the type 2 record to type 0xF2. This
1165                                  * will force the UMP to come up in Boot Mode.
1166                                  * Then while in boot mode, the driver will
1167                                  * download the latest firmware (padded to
1168                                  * 15.5k) into the UMP ram. Finally when the
1169                                  * device comes back up in download mode the
1170                                  * driver will cause the new firmware to be
1171                                  * copied from the UMP Ram to I2C and the
1172                                  * firmware will update the record type from
1173                                  * 0xf2 to 0x02.
1174                                  */
1175                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1176
1177                                 /* Change the I2C Firmware record type to
1178                                    0xf2 to trigger an update */
1179                                 status = write_rom(serial, start_address,
1180                                                 sizeof(*record), record);
1181                                 if (status) {
1182                                         kfree(record);
1183                                         kfree(firmware_version);
1184                                         kfree(rom_desc);
1185                                         kfree(ti_manuf_desc);
1186                                         return status;
1187                                 }
1188
1189                                 /* verify the write -- must do this in order
1190                                  * for write to complete before we do the
1191                                  * hardware reset
1192                                  */
1193                                 status = read_rom(serial,
1194                                                         start_address,
1195                                                         sizeof(*record),
1196                                                         record);
1197                                 if (status) {
1198                                         kfree(record);
1199                                         kfree(firmware_version);
1200                                         kfree(rom_desc);
1201                                         kfree(ti_manuf_desc);
1202                                         return status;
1203                                 }
1204
1205                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1206                                         dev_err(dev,
1207                                                 "%s - error resetting device\n",
1208                                                 __func__);
1209                                         kfree(record);
1210                                         kfree(firmware_version);
1211                                         kfree(rom_desc);
1212                                         kfree(ti_manuf_desc);
1213                                         return -ENODEV;
1214                                 }
1215
1216                                 dbg("%s - HARDWARE RESET", __func__);
1217
1218                                 /* Reset UMP -- Back to BOOT MODE */
1219                                 status = ti_vsend_sync(serial->serial->dev,
1220                                                 UMPC_HARDWARE_RESET,
1221                                                 0, 0, NULL, 0);
1222
1223                                 dbg("%s - HARDWARE RESET return %d",
1224                                                 __func__, status);
1225
1226                                 /* return an error on purpose. */
1227                                 kfree(record);
1228                                 kfree(firmware_version);
1229                                 kfree(rom_desc);
1230                                 kfree(ti_manuf_desc);
1231                                 return -ENODEV;
1232                         }
1233                         kfree(firmware_version);
1234                 }
1235                 /* Search for type 0xF2 record (firmware blank record) */
1236                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1237 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1238                                         sizeof(struct ti_i2c_firmware_rec))
1239                         __u8 *header;
1240                         __u8 *vheader;
1241
1242                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1243                         if (!header) {
1244                                 dev_err(dev, "%s - out of memory.\n", __func__);
1245                                 kfree(rom_desc);
1246                                 kfree(ti_manuf_desc);
1247                                 return -ENOMEM;
1248                         }
1249
1250                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1251                         if (!vheader) {
1252                                 dev_err(dev, "%s - out of memory.\n", __func__);
1253                                 kfree(header);
1254                                 kfree(rom_desc);
1255                                 kfree(ti_manuf_desc);
1256                                 return -ENOMEM;
1257                         }
1258
1259                         dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1260                                                                 __func__);
1261
1262                         /*
1263                          * In order to update the I2C firmware we must change
1264                          * the type 2 record to type 0xF2. This will force the
1265                          * UMP to come up in Boot Mode.  Then while in boot
1266                          * mode, the driver will download the latest firmware
1267                          * (padded to 15.5k) into the UMP ram. Finally when the
1268                          * device comes back up in download mode the driver
1269                          * will cause the new firmware to be copied from the
1270                          * UMP Ram to I2C and the firmware will update the
1271                          * record type from 0xf2 to 0x02.
1272                          */
1273                         status = build_i2c_fw_hdr(header, dev);
1274                         if (status) {
1275                                 kfree(vheader);
1276                                 kfree(header);
1277                                 kfree(rom_desc);
1278                                 kfree(ti_manuf_desc);
1279                                 return -EINVAL;
1280                         }
1281
1282                         /* Update I2C with type 0xf2 record with correct
1283                            size and checksum */
1284                         status = write_rom(serial,
1285                                                 start_address,
1286                                                 HEADER_SIZE,
1287                                                 header);
1288                         if (status) {
1289                                 kfree(vheader);
1290                                 kfree(header);
1291                                 kfree(rom_desc);
1292                                 kfree(ti_manuf_desc);
1293                                 return -EINVAL;
1294                         }
1295
1296                         /* verify the write -- must do this in order for
1297                            write to complete before we do the hardware reset */
1298                         status = read_rom(serial, start_address,
1299                                                         HEADER_SIZE, vheader);
1300
1301                         if (status) {
1302                                 dbg("%s - can't read header back", __func__);
1303                                 kfree(vheader);
1304                                 kfree(header);
1305                                 kfree(rom_desc);
1306                                 kfree(ti_manuf_desc);
1307                                 return status;
1308                         }
1309                         if (memcmp(vheader, header, HEADER_SIZE)) {
1310                                 dbg("%s - write download record failed",
1311                                         __func__);
1312                                 kfree(vheader);
1313                                 kfree(header);
1314                                 kfree(rom_desc);
1315                                 kfree(ti_manuf_desc);
1316                                 return -EINVAL;
1317                         }
1318
1319                         kfree(vheader);
1320                         kfree(header);
1321
1322                         dbg("%s - Start firmware update", __func__);
1323
1324                         /* Tell firmware to copy download image into I2C */
1325                         status = ti_vsend_sync(serial->serial->dev,
1326                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1327
1328                         dbg("%s - Update complete 0x%x", __func__, status);
1329                         if (status) {
1330                                 dev_err(dev,
1331                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1332                                                                 __func__);
1333                                 kfree(rom_desc);
1334                                 kfree(ti_manuf_desc);
1335                                 return status;
1336                         }
1337                 }
1338
1339                 // The device is running the download code
1340                 kfree(rom_desc);
1341                 kfree(ti_manuf_desc);
1342                 return 0;
1343         }
1344
1345         /********************************************************************/
1346         /* Boot Mode */
1347         /********************************************************************/
1348         dbg("%s - RUNNING IN BOOT MODE", __func__);
1349
1350         /* Configure the TI device so we can use the BULK pipes for download */
1351         status = config_boot_dev(serial->serial->dev);
1352         if (status)
1353                 return status;
1354
1355         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1356                                                         != USB_VENDOR_ID_ION) {
1357                 dbg("%s - VID = 0x%x", __func__,
1358                      le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1359                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1360                 goto stayinbootmode;
1361         }
1362
1363         /* We have an ION device (I2c Must be programmed)
1364            Determine I2C image type */
1365         if (i2c_type_bootmode(serial))
1366                 goto stayinbootmode;
1367
1368         /* Check for ION Vendor ID and that the I2C is valid */
1369         if (!check_i2c_image(serial)) {
1370                 struct ti_i2c_image_header *header;
1371                 int i;
1372                 __u8 cs = 0;
1373                 __u8 *buffer;
1374                 int buffer_size;
1375                 int err;
1376                 const struct firmware *fw;
1377                 const char *fw_name = "edgeport/down3.bin";
1378
1379                 /* Validate Hardware version number
1380                  * Read Manufacturing Descriptor from TI Based Edgeport
1381                  */
1382                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1383                 if (!ti_manuf_desc) {
1384                         dev_err(dev, "%s - out of memory.\n", __func__);
1385                         return -ENOMEM;
1386                 }
1387                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1388                 if (status) {
1389                         kfree(ti_manuf_desc);
1390                         goto stayinbootmode;
1391                 }
1392
1393                 /* Check for version 2 */
1394                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1395                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1396                                         __func__, ti_cpu_rev(ti_manuf_desc));
1397                         kfree(ti_manuf_desc);
1398                         goto stayinbootmode;
1399                 }
1400
1401                 kfree(ti_manuf_desc);
1402
1403                 /*
1404                  * In order to update the I2C firmware we must change the type
1405                  * 2 record to type 0xF2. This will force the UMP to come up
1406                  * in Boot Mode.  Then while in boot mode, the driver will
1407                  * download the latest firmware (padded to 15.5k) into the
1408                  * UMP ram. Finally when the device comes back up in download
1409                  * mode the driver will cause the new firmware to be copied
1410                  * from the UMP Ram to I2C and the firmware will update the
1411                  * record type from 0xf2 to 0x02.
1412                  *
1413                  * Do we really have to copy the whole firmware image,
1414                  * or could we do this in place!
1415                  */
1416
1417                 /* Allocate a 15.5k buffer + 3 byte header */
1418                 buffer_size = (((1024 * 16) - 512) +
1419                                         sizeof(struct ti_i2c_image_header));
1420                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1421                 if (!buffer) {
1422                         dev_err(dev, "%s - out of memory\n", __func__);
1423                         return -ENOMEM;
1424                 }
1425
1426                 /* Initialize the buffer to 0xff (pad the buffer) */
1427                 memset(buffer, 0xff, buffer_size);
1428
1429                 err = request_firmware(&fw, fw_name, dev);
1430                 if (err) {
1431                         printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1432                                fw_name, err);
1433                         kfree(buffer);
1434                         return err;
1435                 }
1436                 memcpy(buffer, &fw->data[4], fw->size - 4);
1437                 release_firmware(fw);
1438
1439                 for (i = sizeof(struct ti_i2c_image_header);
1440                                 i < buffer_size; i++) {
1441                         cs = (__u8)(cs + buffer[i]);
1442                 }
1443
1444                 header = (struct ti_i2c_image_header *)buffer;
1445
1446                 /* update length and checksum after padding */
1447                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1448                                         sizeof(struct ti_i2c_image_header)));
1449                 header->CheckSum = cs;
1450
1451                 /* Download the operational code  */
1452                 dbg("%s - Downloading operational code image (TI UMP)",
1453                                                                 __func__);
1454                 status = download_code(serial, buffer, buffer_size);
1455
1456                 kfree(buffer);
1457
1458                 if (status) {
1459                         dbg("%s - Error downloading operational code image",
1460                                                                 __func__);
1461                         return status;
1462                 }
1463
1464                 /* Device will reboot */
1465                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1466
1467                 dbg("%s - Download successful -- Device rebooting...",
1468                                                                 __func__);
1469
1470                 /* return an error on purpose */
1471                 return -ENODEV;
1472         }
1473
1474 stayinbootmode:
1475         /* Eprom is invalid or blank stay in boot mode */
1476         dbg("%s - STAYING IN BOOT MODE", __func__);
1477         serial->product_info.TiMode = TI_MODE_BOOT;
1478
1479         return 0;
1480 }
1481
1482
1483 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1484 {
1485         int port_number = port->port->number - port->port->serial->minor;
1486         on = !!on;      /* 1 or 0 not bitmask */
1487         return send_cmd(port->port->serial->dev,
1488                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1489                         on, NULL, 0);
1490 }
1491
1492
1493 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1494 {
1495         int status = 0;
1496
1497         dbg("%s - %x", __func__, mcr);
1498
1499         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1500         if (status)
1501                 return status;
1502         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1503         if (status)
1504                 return status;
1505         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1506 }
1507
1508 /* Convert TI LSR to standard UART flags */
1509 static __u8 map_line_status(__u8 ti_lsr)
1510 {
1511         __u8 lsr = 0;
1512
1513 #define MAP_FLAG(flagUmp, flagUart)    \
1514         if (ti_lsr & flagUmp) \
1515                 lsr |= flagUart;
1516
1517         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1518         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1519         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1520         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1521         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1522         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1523
1524 #undef MAP_FLAG
1525
1526         return lsr;
1527 }
1528
1529 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1530 {
1531         struct async_icount *icount;
1532         struct tty_struct *tty;
1533
1534         dbg("%s - %02x", __func__, msr);
1535
1536         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1537                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1538                 icount = &edge_port->icount;
1539
1540                 /* update input line counters */
1541                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1542                         icount->cts++;
1543                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1544                         icount->dsr++;
1545                 if (msr & EDGEPORT_MSR_DELTA_CD)
1546                         icount->dcd++;
1547                 if (msr & EDGEPORT_MSR_DELTA_RI)
1548                         icount->rng++;
1549                 wake_up_interruptible(&edge_port->delta_msr_wait);
1550         }
1551
1552         /* Save the new modem status */
1553         edge_port->shadow_msr = msr & 0xf0;
1554
1555         tty = tty_port_tty_get(&edge_port->port->port);
1556         /* handle CTS flow control */
1557         if (tty && C_CRTSCTS(tty)) {
1558                 if (msr & EDGEPORT_MSR_CTS) {
1559                         tty->hw_stopped = 0;
1560                         tty_wakeup(tty);
1561                 } else {
1562                         tty->hw_stopped = 1;
1563                 }
1564         }
1565         tty_kref_put(tty);
1566 }
1567
1568 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1569                                                         __u8 lsr, __u8 data)
1570 {
1571         struct async_icount *icount;
1572         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1573                                                 LSR_FRM_ERR | LSR_BREAK));
1574         struct tty_struct *tty;
1575
1576         dbg("%s - %02x", __func__, new_lsr);
1577
1578         edge_port->shadow_lsr = lsr;
1579
1580         if (new_lsr & LSR_BREAK)
1581                 /*
1582                  * Parity and Framing errors only count if they
1583                  * occur exclusive of a break being received.
1584                  */
1585                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1586
1587         /* Place LSR data byte into Rx buffer */
1588         if (lsr_data) {
1589                 tty = tty_port_tty_get(&edge_port->port->port);
1590                 if (tty) {
1591                         edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1592                         tty_kref_put(tty);
1593                 }
1594         }
1595
1596         /* update input line counters */
1597         icount = &edge_port->icount;
1598         if (new_lsr & LSR_BREAK)
1599                 icount->brk++;
1600         if (new_lsr & LSR_OVER_ERR)
1601                 icount->overrun++;
1602         if (new_lsr & LSR_PAR_ERR)
1603                 icount->parity++;
1604         if (new_lsr & LSR_FRM_ERR)
1605                 icount->frame++;
1606 }
1607
1608
1609 static void edge_interrupt_callback(struct urb *urb)
1610 {
1611         struct edgeport_serial *edge_serial = urb->context;
1612         struct usb_serial_port *port;
1613         struct edgeport_port *edge_port;
1614         unsigned char *data = urb->transfer_buffer;
1615         int length = urb->actual_length;
1616         int port_number;
1617         int function;
1618         int retval;
1619         __u8 lsr;
1620         __u8 msr;
1621         int status = urb->status;
1622
1623         dbg("%s", __func__);
1624
1625         switch (status) {
1626         case 0:
1627                 /* success */
1628                 break;
1629         case -ECONNRESET:
1630         case -ENOENT:
1631         case -ESHUTDOWN:
1632                 /* this urb is terminated, clean up */
1633                 dbg("%s - urb shutting down with status: %d",
1634                     __func__, status);
1635                 return;
1636         default:
1637                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1638                         "%d\n", __func__, status);
1639                 goto exit;
1640         }
1641
1642         if (!length) {
1643                 dbg("%s - no data in urb", __func__);
1644                 goto exit;
1645         }
1646
1647         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1648                                                 __func__, length, data);
1649
1650         if (length != 2) {
1651                 dbg("%s - expecting packet of size 2, got %d",
1652                                                         __func__, length);
1653                 goto exit;
1654         }
1655
1656         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1657         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1658         dbg("%s - port_number %d, function %d, info 0x%x",
1659              __func__, port_number, function, data[1]);
1660         port = edge_serial->serial->port[port_number];
1661         edge_port = usb_get_serial_port_data(port);
1662         if (!edge_port) {
1663                 dbg("%s - edge_port not found", __func__);
1664                 return;
1665         }
1666         switch (function) {
1667         case TIUMP_INTERRUPT_CODE_LSR:
1668                 lsr = map_line_status(data[1]);
1669                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1670                         /* Save the LSR event for bulk read
1671                            completion routine */
1672                         dbg("%s - LSR Event Port %u LSR Status = %02x",
1673                              __func__, port_number, lsr);
1674                         edge_port->lsr_event = 1;
1675                         edge_port->lsr_mask = lsr;
1676                 } else {
1677                         dbg("%s - ===== Port %d LSR Status = %02x ======",
1678                              __func__, port_number, lsr);
1679                         handle_new_lsr(edge_port, 0, lsr, 0);
1680                 }
1681                 break;
1682
1683         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1684                 /* Copy MSR from UMP */
1685                 msr = data[1];
1686                 dbg("%s - ===== Port %u MSR Status = %02x ======",
1687                      __func__, port_number, msr);
1688                 handle_new_msr(edge_port, msr);
1689                 break;
1690
1691         default:
1692                 dev_err(&urb->dev->dev,
1693                         "%s - Unknown Interrupt code from UMP %x\n",
1694                         __func__, data[1]);
1695                 break;
1696
1697         }
1698
1699 exit:
1700         retval = usb_submit_urb(urb, GFP_ATOMIC);
1701         if (retval)
1702                 dev_err(&urb->dev->dev,
1703                         "%s - usb_submit_urb failed with result %d\n",
1704                          __func__, retval);
1705 }
1706
1707 static void edge_bulk_in_callback(struct urb *urb)
1708 {
1709         struct edgeport_port *edge_port = urb->context;
1710         unsigned char *data = urb->transfer_buffer;
1711         struct tty_struct *tty;
1712         int retval = 0;
1713         int port_number;
1714         int status = urb->status;
1715
1716         dbg("%s", __func__);
1717
1718         switch (status) {
1719         case 0:
1720                 /* success */
1721                 break;
1722         case -ECONNRESET:
1723         case -ENOENT:
1724         case -ESHUTDOWN:
1725                 /* this urb is terminated, clean up */
1726                 dbg("%s - urb shutting down with status: %d",
1727                     __func__, status);
1728                 return;
1729         default:
1730                 dev_err(&urb->dev->dev,
1731                         "%s - nonzero read bulk status received: %d\n",
1732                              __func__, status);
1733         }
1734
1735         if (status == -EPIPE)
1736                 goto exit;
1737
1738         if (status) {
1739                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1740                 return;
1741         }
1742
1743         port_number = edge_port->port->number - edge_port->port->serial->minor;
1744
1745         if (edge_port->lsr_event) {
1746                 edge_port->lsr_event = 0;
1747                 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1748                      __func__, port_number, edge_port->lsr_mask, *data);
1749                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1750                 /* Adjust buffer length/pointer */
1751                 --urb->actual_length;
1752                 ++data;
1753         }
1754
1755         tty = tty_port_tty_get(&edge_port->port->port);
1756         if (tty && urb->actual_length) {
1757                 usb_serial_debug_data(debug, &edge_port->port->dev,
1758                                         __func__, urb->actual_length, data);
1759                 if (edge_port->close_pending)
1760                         dbg("%s - close pending, dropping data on the floor",
1761                                                                 __func__);
1762                 else
1763                         edge_tty_recv(&edge_port->port->dev, tty, data,
1764                                                         urb->actual_length);
1765                 edge_port->icount.rx += urb->actual_length;
1766         }
1767         tty_kref_put(tty);
1768
1769 exit:
1770         /* continue read unless stopped */
1771         spin_lock(&edge_port->ep_lock);
1772         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1773                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1774         else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1775                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1776
1777         spin_unlock(&edge_port->ep_lock);
1778         if (retval)
1779                 dev_err(&urb->dev->dev,
1780                         "%s - usb_submit_urb failed with result %d\n",
1781                          __func__, retval);
1782 }
1783
1784 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1785                                         unsigned char *data, int length)
1786 {
1787         int queued;
1788
1789         queued = tty_insert_flip_string(tty, data, length);
1790         if (queued < length)
1791                 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1792                         __func__, length - queued);
1793         tty_flip_buffer_push(tty);
1794 }
1795
1796 static void edge_bulk_out_callback(struct urb *urb)
1797 {
1798         struct usb_serial_port *port = urb->context;
1799         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1800         int status = urb->status;
1801         struct tty_struct *tty;
1802
1803         dbg("%s - port %d", __func__, port->number);
1804
1805         edge_port->ep_write_urb_in_use = 0;
1806
1807         switch (status) {
1808         case 0:
1809                 /* success */
1810                 break;
1811         case -ECONNRESET:
1812         case -ENOENT:
1813         case -ESHUTDOWN:
1814                 /* this urb is terminated, clean up */
1815                 dbg("%s - urb shutting down with status: %d",
1816                     __func__, status);
1817                 return;
1818         default:
1819                 dev_err_console(port, "%s - nonzero write bulk status "
1820                         "received: %d\n", __func__, status);
1821         }
1822
1823         /* send any buffered data */
1824         tty = tty_port_tty_get(&port->port);
1825         edge_send(tty);
1826         tty_kref_put(tty);
1827 }
1828
1829 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1830 {
1831         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1832         struct edgeport_serial *edge_serial;
1833         struct usb_device *dev;
1834         struct urb *urb;
1835         int port_number;
1836         int status;
1837         u16 open_settings;
1838         u8 transaction_timeout;
1839
1840         dbg("%s - port %d", __func__, port->number);
1841
1842         if (edge_port == NULL)
1843                 return -ENODEV;
1844
1845         port_number = port->number - port->serial->minor;
1846         switch (port_number) {
1847         case 0:
1848                 edge_port->uart_base = UMPMEM_BASE_UART1;
1849                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1850                 break;
1851         case 1:
1852                 edge_port->uart_base = UMPMEM_BASE_UART2;
1853                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1854                 break;
1855         default:
1856                 dev_err(&port->dev, "Unknown port number!!!\n");
1857                 return -ENODEV;
1858         }
1859
1860         dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1861                                 __func__, port_number, edge_port->uart_base,
1862                                 edge_port->dma_address);
1863
1864         dev = port->serial->dev;
1865
1866         memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1867         init_waitqueue_head(&edge_port->delta_msr_wait);
1868
1869         /* turn off loopback */
1870         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1871         if (status) {
1872                 dev_err(&port->dev,
1873                                 "%s - cannot send clear loopback command, %d\n",
1874                         __func__, status);
1875                 return status;
1876         }
1877
1878         /* set up the port settings */
1879         if (tty)
1880                 edge_set_termios(tty, port, tty->termios);
1881
1882         /* open up the port */
1883
1884         /* milliseconds to timeout for DMA transfer */
1885         transaction_timeout = 2;
1886
1887         edge_port->ump_read_timeout =
1888                                 max(20, ((transaction_timeout * 3) / 2));
1889
1890         /* milliseconds to timeout for DMA transfer */
1891         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1892                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1893                              (transaction_timeout << 2));
1894
1895         dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1896
1897         /* Tell TI to open and start the port */
1898         status = send_cmd(dev, UMPC_OPEN_PORT,
1899                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1900         if (status) {
1901                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1902                                                         __func__, status);
1903                 return status;
1904         }
1905
1906         /* Start the DMA? */
1907         status = send_cmd(dev, UMPC_START_PORT,
1908                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1909         if (status) {
1910                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1911                                                         __func__, status);
1912                 return status;
1913         }
1914
1915         /* Clear TX and RX buffers in UMP */
1916         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1917         if (status) {
1918                 dev_err(&port->dev,
1919                         "%s - cannot send clear buffers command, %d\n",
1920                         __func__, status);
1921                 return status;
1922         }
1923
1924         /* Read Initial MSR */
1925         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1926                                 (__u16)(UMPM_UART1_PORT + port_number),
1927                                 &edge_port->shadow_msr, 1);
1928         if (status) {
1929                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1930                                                         __func__, status);
1931                 return status;
1932         }
1933
1934         dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1935
1936         /* Set Initial MCR */
1937         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1938         dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1939
1940         edge_serial = edge_port->edge_serial;
1941         if (mutex_lock_interruptible(&edge_serial->es_lock))
1942                 return -ERESTARTSYS;
1943         if (edge_serial->num_ports_open == 0) {
1944                 /* we are the first port to open, post the interrupt urb */
1945                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1946                 if (!urb) {
1947                         dev_err(&port->dev,
1948                                 "%s - no interrupt urb present, exiting\n",
1949                                 __func__);
1950                         status = -EINVAL;
1951                         goto release_es_lock;
1952                 }
1953                 urb->context = edge_serial;
1954                 status = usb_submit_urb(urb, GFP_KERNEL);
1955                 if (status) {
1956                         dev_err(&port->dev,
1957                                 "%s - usb_submit_urb failed with value %d\n",
1958                                         __func__, status);
1959                         goto release_es_lock;
1960                 }
1961         }
1962
1963         /*
1964          * reset the data toggle on the bulk endpoints to work around bug in
1965          * host controllers where things get out of sync some times
1966          */
1967         usb_clear_halt(dev, port->write_urb->pipe);
1968         usb_clear_halt(dev, port->read_urb->pipe);
1969
1970         /* start up our bulk read urb */
1971         urb = port->read_urb;
1972         if (!urb) {
1973                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1974                                                                 __func__);
1975                 status = -EINVAL;
1976                 goto unlink_int_urb;
1977         }
1978         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1979         urb->context = edge_port;
1980         status = usb_submit_urb(urb, GFP_KERNEL);
1981         if (status) {
1982                 dev_err(&port->dev,
1983                         "%s - read bulk usb_submit_urb failed with value %d\n",
1984                                 __func__, status);
1985                 goto unlink_int_urb;
1986         }
1987
1988         ++edge_serial->num_ports_open;
1989
1990         dbg("%s - exited", __func__);
1991
1992         goto release_es_lock;
1993
1994 unlink_int_urb:
1995         if (edge_port->edge_serial->num_ports_open == 0)
1996                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1997 release_es_lock:
1998         mutex_unlock(&edge_serial->es_lock);
1999         return status;
2000 }
2001
2002 static void edge_close(struct usb_serial_port *port)
2003 {
2004         struct edgeport_serial *edge_serial;
2005         struct edgeport_port *edge_port;
2006         int port_number;
2007         int status;
2008
2009         dbg("%s - port %d", __func__, port->number);
2010
2011         edge_serial = usb_get_serial_data(port->serial);
2012         edge_port = usb_get_serial_port_data(port);
2013         if (edge_serial == NULL || edge_port == NULL)
2014                 return;
2015
2016         /* The bulkreadcompletion routine will check
2017          * this flag and dump add read data */
2018         edge_port->close_pending = 1;
2019
2020         /* chase the port close and flush */
2021         chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2022
2023         usb_kill_urb(port->read_urb);
2024         usb_kill_urb(port->write_urb);
2025         edge_port->ep_write_urb_in_use = 0;
2026
2027         /* assuming we can still talk to the device,
2028          * send a close port command to it */
2029         dbg("%s - send umpc_close_port", __func__);
2030         port_number = port->number - port->serial->minor;
2031         status = send_cmd(port->serial->dev,
2032                                      UMPC_CLOSE_PORT,
2033                                      (__u8)(UMPM_UART1_PORT + port_number),
2034                                      0,
2035                                      NULL,
2036                                      0);
2037         mutex_lock(&edge_serial->es_lock);
2038         --edge_port->edge_serial->num_ports_open;
2039         if (edge_port->edge_serial->num_ports_open <= 0) {
2040                 /* last port is now closed, let's shut down our interrupt urb */
2041                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2042                 edge_port->edge_serial->num_ports_open = 0;
2043         }
2044         mutex_unlock(&edge_serial->es_lock);
2045         edge_port->close_pending = 0;
2046
2047         dbg("%s - exited", __func__);
2048 }
2049
2050 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2051                                 const unsigned char *data, int count)
2052 {
2053         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2054
2055         dbg("%s - port %d", __func__, port->number);
2056
2057         if (count == 0) {
2058                 dbg("%s - write request of 0 bytes", __func__);
2059                 return 0;
2060         }
2061
2062         if (edge_port == NULL)
2063                 return -ENODEV;
2064         if (edge_port->close_pending == 1)
2065                 return -ENODEV;
2066
2067         count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2068                                                         &edge_port->ep_lock);
2069         edge_send(tty);
2070
2071         return count;
2072 }
2073
2074 static void edge_send(struct tty_struct *tty)
2075 {
2076         struct usb_serial_port *port = tty->driver_data;
2077         int count, result;
2078         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2079         unsigned long flags;
2080
2081
2082         dbg("%s - port %d", __func__, port->number);
2083
2084         spin_lock_irqsave(&edge_port->ep_lock, flags);
2085
2086         if (edge_port->ep_write_urb_in_use) {
2087                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2088                 return;
2089         }
2090
2091         count = kfifo_out(&edge_port->write_fifo,
2092                                 port->write_urb->transfer_buffer,
2093                                 port->bulk_out_size);
2094
2095         if (count == 0) {
2096                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2097                 return;
2098         }
2099
2100         edge_port->ep_write_urb_in_use = 1;
2101
2102         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2103
2104         usb_serial_debug_data(debug, &port->dev, __func__, count,
2105                                 port->write_urb->transfer_buffer);
2106
2107         /* set up our urb */
2108         port->write_urb->transfer_buffer_length = count;
2109
2110         /* send the data out the bulk port */
2111         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2112         if (result) {
2113                 dev_err_console(port,
2114                         "%s - failed submitting write urb, error %d\n",
2115                                 __func__, result);
2116                 edge_port->ep_write_urb_in_use = 0;
2117                 /* TODO: reschedule edge_send */
2118         } else
2119                 edge_port->icount.tx += count;
2120
2121         /* wakeup any process waiting for writes to complete */
2122         /* there is now more room in the buffer for new writes */
2123         if (tty)
2124                 tty_wakeup(tty);
2125 }
2126
2127 static int edge_write_room(struct tty_struct *tty)
2128 {
2129         struct usb_serial_port *port = tty->driver_data;
2130         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2131         int room = 0;
2132         unsigned long flags;
2133
2134         dbg("%s - port %d", __func__, port->number);
2135
2136         if (edge_port == NULL)
2137                 return 0;
2138         if (edge_port->close_pending == 1)
2139                 return 0;
2140
2141         spin_lock_irqsave(&edge_port->ep_lock, flags);
2142         room = kfifo_avail(&edge_port->write_fifo);
2143         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2144
2145         dbg("%s - returns %d", __func__, room);
2146         return room;
2147 }
2148
2149 static int edge_chars_in_buffer(struct tty_struct *tty)
2150 {
2151         struct usb_serial_port *port = tty->driver_data;
2152         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2153         int chars = 0;
2154         unsigned long flags;
2155
2156         dbg("%s - port %d", __func__, port->number);
2157
2158         if (edge_port == NULL)
2159                 return 0;
2160         if (edge_port->close_pending == 1)
2161                 return 0;
2162
2163         spin_lock_irqsave(&edge_port->ep_lock, flags);
2164         chars = kfifo_len(&edge_port->write_fifo);
2165         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2166
2167         dbg("%s - returns %d", __func__, chars);
2168         return chars;
2169 }
2170
2171 static void edge_throttle(struct tty_struct *tty)
2172 {
2173         struct usb_serial_port *port = tty->driver_data;
2174         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2175         int status;
2176
2177         dbg("%s - port %d", __func__, port->number);
2178
2179         if (edge_port == NULL)
2180                 return;
2181
2182         /* if we are implementing XON/XOFF, send the stop character */
2183         if (I_IXOFF(tty)) {
2184                 unsigned char stop_char = STOP_CHAR(tty);
2185                 status = edge_write(tty, port, &stop_char, 1);
2186                 if (status <= 0) {
2187                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2188                 }
2189         }
2190
2191         /* if we are implementing RTS/CTS, stop reads */
2192         /* and the Edgeport will clear the RTS line */
2193         if (C_CRTSCTS(tty))
2194                 stop_read(edge_port);
2195
2196 }
2197
2198 static void edge_unthrottle(struct tty_struct *tty)
2199 {
2200         struct usb_serial_port *port = tty->driver_data;
2201         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2202         int status;
2203
2204         dbg("%s - port %d", __func__, port->number);
2205
2206         if (edge_port == NULL)
2207                 return;
2208
2209         /* if we are implementing XON/XOFF, send the start character */
2210         if (I_IXOFF(tty)) {
2211                 unsigned char start_char = START_CHAR(tty);
2212                 status = edge_write(tty, port, &start_char, 1);
2213                 if (status <= 0) {
2214                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2215                 }
2216         }
2217         /* if we are implementing RTS/CTS, restart reads */
2218         /* are the Edgeport will assert the RTS line */
2219         if (C_CRTSCTS(tty)) {
2220                 status = restart_read(edge_port);
2221                 if (status)
2222                         dev_err(&port->dev,
2223                                 "%s - read bulk usb_submit_urb failed: %d\n",
2224                                                         __func__, status);
2225         }
2226
2227 }
2228
2229 static void stop_read(struct edgeport_port *edge_port)
2230 {
2231         unsigned long flags;
2232
2233         spin_lock_irqsave(&edge_port->ep_lock, flags);
2234
2235         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2236                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2237         edge_port->shadow_mcr &= ~MCR_RTS;
2238
2239         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2240 }
2241
2242 static int restart_read(struct edgeport_port *edge_port)
2243 {
2244         struct urb *urb;
2245         int status = 0;
2246         unsigned long flags;
2247
2248         spin_lock_irqsave(&edge_port->ep_lock, flags);
2249
2250         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2251                 urb = edge_port->port->read_urb;
2252                 status = usb_submit_urb(urb, GFP_ATOMIC);
2253         }
2254         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2255         edge_port->shadow_mcr |= MCR_RTS;
2256
2257         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2258
2259         return status;
2260 }
2261
2262 static void change_port_settings(struct tty_struct *tty,
2263                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2264 {
2265         struct ump_uart_config *config;
2266         int baud;
2267         unsigned cflag;
2268         int status;
2269         int port_number = edge_port->port->number -
2270                                         edge_port->port->serial->minor;
2271
2272         dbg("%s - port %d", __func__, edge_port->port->number);
2273
2274         config = kmalloc (sizeof (*config), GFP_KERNEL);
2275         if (!config) {
2276                 *tty->termios = *old_termios;
2277                 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2278                                                                 __func__);
2279                 return;
2280         }
2281
2282         cflag = tty->termios->c_cflag;
2283
2284         config->wFlags = 0;
2285
2286         /* These flags must be set */
2287         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2288         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2289         config->bUartMode = (__u8)(edge_port->bUartMode);
2290
2291         switch (cflag & CSIZE) {
2292         case CS5:
2293                     config->bDataBits = UMP_UART_CHAR5BITS;
2294                     dbg("%s - data bits = 5", __func__);
2295                     break;
2296         case CS6:
2297                     config->bDataBits = UMP_UART_CHAR6BITS;
2298                     dbg("%s - data bits = 6", __func__);
2299                     break;
2300         case CS7:
2301                     config->bDataBits = UMP_UART_CHAR7BITS;
2302                     dbg("%s - data bits = 7", __func__);
2303                     break;
2304         default:
2305         case CS8:
2306                     config->bDataBits = UMP_UART_CHAR8BITS;
2307                     dbg("%s - data bits = 8", __func__);
2308                             break;
2309         }
2310
2311         if (cflag & PARENB) {
2312                 if (cflag & PARODD) {
2313                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2314                         config->bParity = UMP_UART_ODDPARITY;
2315                         dbg("%s - parity = odd", __func__);
2316                 } else {
2317                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2318                         config->bParity = UMP_UART_EVENPARITY;
2319                         dbg("%s - parity = even", __func__);
2320                 }
2321         } else {
2322                 config->bParity = UMP_UART_NOPARITY;
2323                 dbg("%s - parity = none", __func__);
2324         }
2325
2326         if (cflag & CSTOPB) {
2327                 config->bStopBits = UMP_UART_STOPBIT2;
2328                 dbg("%s - stop bits = 2", __func__);
2329         } else {
2330                 config->bStopBits = UMP_UART_STOPBIT1;
2331                 dbg("%s - stop bits = 1", __func__);
2332         }
2333
2334         /* figure out the flow control settings */
2335         if (cflag & CRTSCTS) {
2336                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2337                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2338                 dbg("%s - RTS/CTS is enabled", __func__);
2339         } else {
2340                 dbg("%s - RTS/CTS is disabled", __func__);
2341                 tty->hw_stopped = 0;
2342                 restart_read(edge_port);
2343         }
2344
2345         /* if we are implementing XON/XOFF, set the start and stop
2346            character in the device */
2347         config->cXon  = START_CHAR(tty);
2348         config->cXoff = STOP_CHAR(tty);
2349
2350         /* if we are implementing INBOUND XON/XOFF */
2351         if (I_IXOFF(tty)) {
2352                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2353                 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2354                      __func__, config->cXon, config->cXoff);
2355         } else
2356                 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2357
2358         /* if we are implementing OUTBOUND XON/XOFF */
2359         if (I_IXON(tty)) {
2360                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2361                 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2362                      __func__, config->cXon, config->cXoff);
2363         } else
2364                 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2365
2366         tty->termios->c_cflag &= ~CMSPAR;
2367
2368         /* Round the baud rate */
2369         baud = tty_get_baud_rate(tty);
2370         if (!baud) {
2371                 /* pick a default, any default... */
2372                 baud = 9600;
2373         } else
2374                 tty_encode_baud_rate(tty, baud, baud);
2375
2376         edge_port->baud_rate = baud;
2377         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2378
2379         /* FIXME: Recompute actual baud from divisor here */
2380
2381         dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2382                                                         config->wBaudRate);
2383
2384         dbg("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2385         dbg("wFlags:    0x%x", config->wFlags);
2386         dbg("bDataBits:   %d", config->bDataBits);
2387         dbg("bParity:     %d", config->bParity);
2388         dbg("bStopBits:   %d", config->bStopBits);
2389         dbg("cXon:        %d", config->cXon);
2390         dbg("cXoff:       %d", config->cXoff);
2391         dbg("bUartMode:   %d", config->bUartMode);
2392
2393         /* move the word values into big endian mode */
2394         cpu_to_be16s(&config->wFlags);
2395         cpu_to_be16s(&config->wBaudRate);
2396
2397         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2398                                 (__u8)(UMPM_UART1_PORT + port_number),
2399                                 0, (__u8 *)config, sizeof(*config));
2400         if (status)
2401                 dbg("%s - error %d when trying to write config to device",
2402                      __func__, status);
2403         kfree(config);
2404 }
2405
2406 static void edge_set_termios(struct tty_struct *tty,
2407                 struct usb_serial_port *port, struct ktermios *old_termios)
2408 {
2409         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2410         unsigned int cflag;
2411
2412         cflag = tty->termios->c_cflag;
2413
2414         dbg("%s - clfag %08x iflag %08x", __func__,
2415             tty->termios->c_cflag, tty->termios->c_iflag);
2416         dbg("%s - old clfag %08x old iflag %08x", __func__,
2417             old_termios->c_cflag, old_termios->c_iflag);
2418         dbg("%s - port %d", __func__, port->number);
2419
2420         if (edge_port == NULL)
2421                 return;
2422         /* change the port settings to the new ones specified */
2423         change_port_settings(tty, edge_port, old_termios);
2424 }
2425
2426 static int edge_tiocmset(struct tty_struct *tty,
2427                                         unsigned int set, unsigned int clear)
2428 {
2429         struct usb_serial_port *port = tty->driver_data;
2430         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2431         unsigned int mcr;
2432         unsigned long flags;
2433
2434         dbg("%s - port %d", __func__, port->number);
2435
2436         spin_lock_irqsave(&edge_port->ep_lock, flags);
2437         mcr = edge_port->shadow_mcr;
2438         if (set & TIOCM_RTS)
2439                 mcr |= MCR_RTS;
2440         if (set & TIOCM_DTR)
2441                 mcr |= MCR_DTR;
2442         if (set & TIOCM_LOOP)
2443                 mcr |= MCR_LOOPBACK;
2444
2445         if (clear & TIOCM_RTS)
2446                 mcr &= ~MCR_RTS;
2447         if (clear & TIOCM_DTR)
2448                 mcr &= ~MCR_DTR;
2449         if (clear & TIOCM_LOOP)
2450                 mcr &= ~MCR_LOOPBACK;
2451
2452         edge_port->shadow_mcr = mcr;
2453         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2454
2455         restore_mcr(edge_port, mcr);
2456         return 0;
2457 }
2458
2459 static int edge_tiocmget(struct tty_struct *tty)
2460 {
2461         struct usb_serial_port *port = tty->driver_data;
2462         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2463         unsigned int result = 0;
2464         unsigned int msr;
2465         unsigned int mcr;
2466         unsigned long flags;
2467
2468         dbg("%s - port %d", __func__, port->number);
2469
2470         spin_lock_irqsave(&edge_port->ep_lock, flags);
2471
2472         msr = edge_port->shadow_msr;
2473         mcr = edge_port->shadow_mcr;
2474         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2475                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2476                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2477                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2478                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2479                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2480
2481
2482         dbg("%s -- %x", __func__, result);
2483         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2484
2485         return result;
2486 }
2487
2488 static int edge_get_icount(struct tty_struct *tty,
2489                                 struct serial_icounter_struct *icount)
2490 {
2491         struct usb_serial_port *port = tty->driver_data;
2492         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2493         struct async_icount *ic = &edge_port->icount;
2494
2495         icount->cts = ic->cts;
2496         icount->dsr = ic->dsr;
2497         icount->rng = ic->rng;
2498         icount->dcd = ic->dcd;
2499         icount->tx = ic->tx;
2500         icount->rx = ic->rx;
2501         icount->frame = ic->frame;
2502         icount->parity = ic->parity;
2503         icount->overrun = ic->overrun;
2504         icount->brk = ic->brk;
2505         icount->buf_overrun = ic->buf_overrun;
2506         return 0;
2507 }
2508
2509 static int get_serial_info(struct edgeport_port *edge_port,
2510                                 struct serial_struct __user *retinfo)
2511 {
2512         struct serial_struct tmp;
2513
2514         if (!retinfo)
2515                 return -EFAULT;
2516
2517         memset(&tmp, 0, sizeof(tmp));
2518
2519         tmp.type                = PORT_16550A;
2520         tmp.line                = edge_port->port->serial->minor;
2521         tmp.port                = edge_port->port->number;
2522         tmp.irq                 = 0;
2523         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2524         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2525         tmp.baud_base           = 9600;
2526         tmp.close_delay         = 5*HZ;
2527         tmp.closing_wait        = closing_wait;
2528
2529         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2530                 return -EFAULT;
2531         return 0;
2532 }
2533
2534 static int edge_ioctl(struct tty_struct *tty,
2535                                         unsigned int cmd, unsigned long arg)
2536 {
2537         struct usb_serial_port *port = tty->driver_data;
2538         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2539         struct async_icount cnow;
2540         struct async_icount cprev;
2541
2542         dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2543
2544         switch (cmd) {
2545         case TIOCGSERIAL:
2546                 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2547                 return get_serial_info(edge_port,
2548                                 (struct serial_struct __user *) arg);
2549         case TIOCMIWAIT:
2550                 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2551                 cprev = edge_port->icount;
2552                 while (1) {
2553                         interruptible_sleep_on(&edge_port->delta_msr_wait);
2554                         /* see if a signal did it */
2555                         if (signal_pending(current))
2556                                 return -ERESTARTSYS;
2557                         cnow = edge_port->icount;
2558                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2559                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2560                                 return -EIO; /* no change => error */
2561                         if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2562                             ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2563                             ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2564                             ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2565                                 return 0;
2566                         }
2567                         cprev = cnow;
2568                 }
2569                 /* not reached */
2570                 break;
2571         }
2572         return -ENOIOCTLCMD;
2573 }
2574
2575 static void edge_break(struct tty_struct *tty, int break_state)
2576 {
2577         struct usb_serial_port *port = tty->driver_data;
2578         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2579         int status;
2580         int bv = 0;     /* Off */
2581
2582         dbg("%s - state = %d", __func__, break_state);
2583
2584         /* chase the port close */
2585         chase_port(edge_port, 0, 0);
2586
2587         if (break_state == -1)
2588                 bv = 1; /* On */
2589         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2590         if (status)
2591                 dbg("%s - error %d sending break set/clear command.",
2592                      __func__, status);
2593 }
2594
2595 static int edge_startup(struct usb_serial *serial)
2596 {
2597         struct edgeport_serial *edge_serial;
2598         struct edgeport_port *edge_port;
2599         struct usb_device *dev;
2600         int status;
2601         int i;
2602
2603         dev = serial->dev;
2604
2605         /* create our private serial structure */
2606         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2607         if (edge_serial == NULL) {
2608                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2609                 return -ENOMEM;
2610         }
2611         mutex_init(&edge_serial->es_lock);
2612         edge_serial->serial = serial;
2613         usb_set_serial_data(serial, edge_serial);
2614
2615         status = download_fw(edge_serial);
2616         if (status) {
2617                 kfree(edge_serial);
2618                 return status;
2619         }
2620
2621         /* set up our port private structures */
2622         for (i = 0; i < serial->num_ports; ++i) {
2623                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2624                 if (edge_port == NULL) {
2625                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2626                                                                 __func__);
2627                         goto cleanup;
2628                 }
2629                 spin_lock_init(&edge_port->ep_lock);
2630                 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2631                                                                 GFP_KERNEL)) {
2632                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2633                                                                 __func__);
2634                         kfree(edge_port);
2635                         goto cleanup;
2636                 }
2637                 edge_port->port = serial->port[i];
2638                 edge_port->edge_serial = edge_serial;
2639                 usb_set_serial_port_data(serial->port[i], edge_port);
2640                 edge_port->bUartMode = default_uart_mode;
2641         }
2642
2643         return 0;
2644
2645 cleanup:
2646         for (--i; i >= 0; --i) {
2647                 edge_port = usb_get_serial_port_data(serial->port[i]);
2648                 kfifo_free(&edge_port->write_fifo);
2649                 kfree(edge_port);
2650                 usb_set_serial_port_data(serial->port[i], NULL);
2651         }
2652         kfree(edge_serial);
2653         usb_set_serial_data(serial, NULL);
2654         return -ENOMEM;
2655 }
2656
2657 static void edge_disconnect(struct usb_serial *serial)
2658 {
2659         dbg("%s", __func__);
2660 }
2661
2662 static void edge_release(struct usb_serial *serial)
2663 {
2664         int i;
2665         struct edgeport_port *edge_port;
2666
2667         dbg("%s", __func__);
2668
2669         for (i = 0; i < serial->num_ports; ++i) {
2670                 edge_port = usb_get_serial_port_data(serial->port[i]);
2671                 kfifo_free(&edge_port->write_fifo);
2672                 kfree(edge_port);
2673         }
2674         kfree(usb_get_serial_data(serial));
2675 }
2676
2677
2678 /* Sysfs Attributes */
2679
2680 static ssize_t show_uart_mode(struct device *dev,
2681         struct device_attribute *attr, char *buf)
2682 {
2683         struct usb_serial_port *port = to_usb_serial_port(dev);
2684         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2685
2686         return sprintf(buf, "%d\n", edge_port->bUartMode);
2687 }
2688
2689 static ssize_t store_uart_mode(struct device *dev,
2690         struct device_attribute *attr, const char *valbuf, size_t count)
2691 {
2692         struct usb_serial_port *port = to_usb_serial_port(dev);
2693         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2694         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2695
2696         dbg("%s: setting uart_mode = %d", __func__, v);
2697
2698         if (v < 256)
2699                 edge_port->bUartMode = v;
2700         else
2701                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2702
2703         return count;
2704 }
2705
2706 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2707                                                         store_uart_mode);
2708
2709 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2710 {
2711         return device_create_file(&port->dev, &dev_attr_uart_mode);
2712 }
2713
2714 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2715 {
2716         device_remove_file(&port->dev, &dev_attr_uart_mode);
2717         return 0;
2718 }
2719
2720
2721 static struct usb_serial_driver edgeport_1port_device = {
2722         .driver = {
2723                 .owner          = THIS_MODULE,
2724                 .name           = "edgeport_ti_1",
2725         },
2726         .description            = "Edgeport TI 1 port adapter",
2727         .id_table               = edgeport_1port_id_table,
2728         .num_ports              = 1,
2729         .open                   = edge_open,
2730         .close                  = edge_close,
2731         .throttle               = edge_throttle,
2732         .unthrottle             = edge_unthrottle,
2733         .attach                 = edge_startup,
2734         .disconnect             = edge_disconnect,
2735         .release                = edge_release,
2736         .port_probe             = edge_create_sysfs_attrs,
2737         .port_remove            = edge_remove_sysfs_attrs,
2738         .ioctl                  = edge_ioctl,
2739         .set_termios            = edge_set_termios,
2740         .tiocmget               = edge_tiocmget,
2741         .tiocmset               = edge_tiocmset,
2742         .get_icount             = edge_get_icount,
2743         .write                  = edge_write,
2744         .write_room             = edge_write_room,
2745         .chars_in_buffer        = edge_chars_in_buffer,
2746         .break_ctl              = edge_break,
2747         .read_int_callback      = edge_interrupt_callback,
2748         .read_bulk_callback     = edge_bulk_in_callback,
2749         .write_bulk_callback    = edge_bulk_out_callback,
2750 };
2751
2752 static struct usb_serial_driver edgeport_2port_device = {
2753         .driver = {
2754                 .owner          = THIS_MODULE,
2755                 .name           = "edgeport_ti_2",
2756         },
2757         .description            = "Edgeport TI 2 port adapter",
2758         .id_table               = edgeport_2port_id_table,
2759         .num_ports              = 2,
2760         .open                   = edge_open,
2761         .close                  = edge_close,
2762         .throttle               = edge_throttle,
2763         .unthrottle             = edge_unthrottle,
2764         .attach                 = edge_startup,
2765         .disconnect             = edge_disconnect,
2766         .release                = edge_release,
2767         .port_probe             = edge_create_sysfs_attrs,
2768         .port_remove            = edge_remove_sysfs_attrs,
2769         .ioctl                  = edge_ioctl,
2770         .set_termios            = edge_set_termios,
2771         .tiocmget               = edge_tiocmget,
2772         .tiocmset               = edge_tiocmset,
2773         .write                  = edge_write,
2774         .write_room             = edge_write_room,
2775         .chars_in_buffer        = edge_chars_in_buffer,
2776         .break_ctl              = edge_break,
2777         .read_int_callback      = edge_interrupt_callback,
2778         .read_bulk_callback     = edge_bulk_in_callback,
2779         .write_bulk_callback    = edge_bulk_out_callback,
2780 };
2781
2782 static struct usb_serial_driver * const serial_drivers[] = {
2783         &edgeport_1port_device, &edgeport_2port_device, NULL
2784 };
2785
2786 module_usb_serial_driver(io_driver, serial_drivers);
2787
2788 MODULE_AUTHOR(DRIVER_AUTHOR);
2789 MODULE_DESCRIPTION(DRIVER_DESC);
2790 MODULE_LICENSE("GPL");
2791 MODULE_FIRMWARE("edgeport/down3.bin");
2792
2793 module_param(debug, bool, S_IRUGO | S_IWUSR);
2794 MODULE_PARM_DESC(debug, "Debug enabled or not");
2795
2796 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2797 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2798
2799 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2800 MODULE_PARM_DESC(ignore_cpu_rev,
2801                         "Ignore the cpu revision when connecting to a device");
2802
2803 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2804 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");