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