drivers/usb/serial/io_ti.c

   1 /*
   2  * Edgeport USB Serial Converter driver
   3  *
   4  * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  *
   7  *      This program is free software; you can redistribute it and/or modify
   8  *      it under the terms of the GNU General Public License as published by
   9  *      the Free Software Foundation; either version 2 of the License, or
  10  *      (at your option) any later version.
  11  *
  12  * Supports the following devices:
  13  *      EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
  14  *
  15  * For questions or problems with this driver, contact Inside Out
  16  * Networks technical support, or Peter Berger <pberger@brimson.com>,
  17  * or Al Borchers <alborchers@steinerpoint.com>.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/jiffies.h>
  22 #include <linux/errno.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/tty.h>
  26 #include <linux/tty_driver.h>
  27 #include <linux/tty_flip.h>
  28 #include <linux/module.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/mutex.h>
  31 #include <linux/serial.h>
  32 #include <linux/kfifo.h>
  33 #include <linux/ioctl.h>
  34 #include <linux/firmware.h>
  35 #include <linux/uaccess.h>
  36 #include <linux/usb.h>
  37 #include <linux/usb/serial.h>
  38
  39 #include "io_16654.h"
  40 #include "io_usbvend.h"
  41 #include "io_ti.h"
  42
  43 /*
  44  * Version Information
  45  */
  46 #define DRIVER_VERSION "v0.7mode043006"
  47 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  48 #define DRIVER_DESC "Edgeport USB Serial Driver"
  49
  50 #define EPROM_PAGE_SIZE         64
  51
  52
  53 /* different hardware types */
  54 #define HARDWARE_TYPE_930       0
  55 #define HARDWARE_TYPE_TIUMP     1
  56
  57 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
  58 #define TI_MODE_CONFIGURING     0   /* Device has not entered start device */
  59 #define TI_MODE_BOOT            1   /* Staying in boot mode                */
  60 #define TI_MODE_DOWNLOAD        2   /* Made it to download mode            */
  61 #define TI_MODE_TRANSITIONING   3   /* Currently in boot mode but
  62                                        transitioning to download mode      */
  63
  64 /* read urb state */
  65 #define EDGE_READ_URB_RUNNING   0
  66 #define EDGE_READ_URB_STOPPING  1
  67 #define EDGE_READ_URB_STOPPED   2
  68
  69 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
  70
  71 #define EDGE_OUT_BUF_SIZE       1024
  72
  73
  74 /* Product information read from the Edgeport */
  75 struct product_info {
  76         int     TiMode;                 /* Current TI Mode  */
  77         __u8    hardware_type;          /* Type of hardware */
  78 } __attribute__((packed));
  79
  80 struct edgeport_port {
  81         __u16 uart_base;
  82         __u16 dma_address;
  83         __u8 shadow_msr;
  84         __u8 shadow_mcr;
  85         __u8 shadow_lsr;
  86         __u8 lsr_mask;
  87         __u32 ump_read_timeout;         /* Number of milliseconds the UMP will
  88                                            wait without data before completing
  89                                            a read short */
  90         int baud_rate;
  91         int close_pending;
  92         int lsr_event;
  93         struct async_icount     icount;
  94         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
  95                                                    waiting for msr change to
  96                                                    happen */
  97         struct edgeport_serial  *edge_serial;
  98         struct usb_serial_port  *port;
  99         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
 100         spinlock_t ep_lock;
 101         int ep_read_urb_state;
 102         int ep_write_urb_in_use;
 103         struct kfifo write_fifo;
 104 };
 105
 106 struct edgeport_serial {
 107         struct product_info product_info;
 108         u8 TI_I2C_Type;                 /* Type of I2C in UMP */
 109         u8 TiReadI2C;                   /* Set to TRUE if we have read the
 110                                            I2c in Boot Mode */
 111         struct mutex es_lock;
 112         int num_ports_open;
 113         struct usb_serial *serial;
 114 };
 115
 116
 117 /* Devices that this driver supports */
 118 static const struct usb_device_id edgeport_1port_id_table[] = {
 119         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 120         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 121         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 122         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 123         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 124         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 125         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 126         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 127         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 128         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 132         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 133         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 134         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 135         { }
 136 };
 137
 138 static const struct usb_device_id edgeport_2port_id_table[] = {
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 141         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 142         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 143         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 151         /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 157         { }
 158 };
 159
 160 /* Devices that this driver supports */
 161 static const struct usb_device_id id_table_combined[] = {
 162         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 163         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 170         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 176         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 177         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 178         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 179         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 180         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 181         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 182         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 183         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 184         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 185         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 186         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 187         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 188         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 189         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 190         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 191         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 192         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 193         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 194         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 195         { }
 196 };
 197
 198 MODULE_DEVICE_TABLE(usb, id_table_combined);
 199
 200 static unsigned char OperationalMajorVersion;
 201 static unsigned char OperationalMinorVersion;
 202 static unsigned short OperationalBuildNumber;
 203
 204 static bool debug;
 205
 206 static int closing_wait = EDGE_CLOSING_WAIT;
 207 static bool ignore_cpu_rev;
 208 static int default_uart_mode;           /* RS232 */
 209
 210 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
 211                           unsigned char *data, int length);
 212
 213 static void stop_read(struct edgeport_port *edge_port);
 214 static int restart_read(struct edgeport_port *edge_port);
 215
 216 static void edge_set_termios(struct tty_struct *tty,
 217                 struct usb_serial_port *port, struct ktermios *old_termios);
 218 static void edge_send(struct tty_struct *tty);
 219
 220 /* sysfs attributes */
 221 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
 222 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
 223
 224
 225 static int ti_vread_sync(struct usb_device *dev, __u8 request,
 226                                 __u16 value, __u16 index, u8 *data, int size)
 227 {
 228         int status;
 229
 230         status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
 231                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
 232                         value, index, data, size, 1000);
 233         if (status < 0)
 234                 return status;
 235         if (status != size) {
 236                 dbg("%s - wanted to write %d, but only wrote %d",
 237                                              __func__, size, status);
 238                 return -ECOMM;
 239         }
 240         return 0;
 241 }
 242
 243 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
 244                                 __u16 value, __u16 index, u8 *data, int size)
 245 {
 246         int status;
 247
 248         status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
 249                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
 250                         value, index, data, size, 1000);
 251         if (status < 0)
 252                 return status;
 253         if (status != size) {
 254                 dbg("%s - wanted to write %d, but only wrote %d",
 255                      __func__, size, status);
 256                 return -ECOMM;
 257         }
 258         return 0;
 259 }
 260
 261 static int send_cmd(struct usb_device *dev, __u8 command,
 262                                 __u8 moduleid, __u16 value, u8 *data,
 263                                 int size)
 264 {
 265         return ti_vsend_sync(dev, command, value, moduleid, data, size);
 266 }
 267
 268 /* clear tx/rx buffers and fifo in TI UMP */
 269 static int purge_port(struct usb_serial_port *port, __u16 mask)
 270 {
 271         int port_number = port->number - port->serial->minor;
 272
 273         dbg("%s - port %d, mask %x", __func__, port_number, mask);
 274
 275         return send_cmd(port->serial->dev,
 276                                         UMPC_PURGE_PORT,
 277                                         (__u8)(UMPM_UART1_PORT + port_number),
 278                                         mask,
 279                                         NULL,
 280                                         0);
 281 }
 282
 283 /**
 284  * read_download_mem - Read edgeport memory from TI chip
 285  * @dev: usb device pointer
 286  * @start_address: Device CPU address at which to read
 287  * @length: Length of above data
 288  * @address_type: Can read both XDATA and I2C
 289  * @buffer: pointer to input data buffer
 290  */
 291 static int read_download_mem(struct usb_device *dev, int start_address,
 292                                 int length, __u8 address_type, __u8 *buffer)
 293 {
 294         int status = 0;
 295         __u8 read_length;
 296         __be16 be_start_address;
 297
 298         dbg("%s - @ %x for %d", __func__, start_address, length);
 299
 300         /* Read in blocks of 64 bytes
 301          * (TI firmware can't handle more than 64 byte reads)
 302          */
 303         while (length) {
 304                 if (length > 64)
 305                         read_length = 64;
 306                 else
 307                         read_length = (__u8)length;
 308
 309                 if (read_length > 1) {
 310                         dbg("%s - @ %x for %d", __func__,
 311                              start_address, read_length);
 312                 }
 313                 be_start_address = cpu_to_be16(start_address);
 314                 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
 315                                         (__u16)address_type,
 316                                         (__force __u16)be_start_address,
 317                                         buffer, read_length);
 318
 319                 if (status) {
 320                         dbg("%s - ERROR %x", __func__, status);
 321                         return status;
 322                 }
 323
 324                 if (read_length > 1)
 325                         usb_serial_debug_data(debug, &dev->dev, __func__,
 326                                               read_length, buffer);
 327
 328                 /* Update pointers/length */
 329                 start_address += read_length;
 330                 buffer += read_length;
 331                 length -= read_length;
 332         }
 333
 334         return status;
 335 }
 336
 337 static int read_ram(struct usb_device *dev, int start_address,
 338                                                 int length, __u8 *buffer)
 339 {
 340         return read_download_mem(dev, start_address, length,
 341                                         DTK_ADDR_SPACE_XDATA, buffer);
 342 }
 343
 344 /* Read edgeport memory to a given block */
 345 static int read_boot_mem(struct edgeport_serial *serial,
 346                                 int start_address, int length, __u8 *buffer)
 347 {
 348         int status = 0;
 349         int i;
 350
 351         for (i = 0; i < length; i++) {
 352                 status = ti_vread_sync(serial->serial->dev,
 353                                 UMPC_MEMORY_READ, serial->TI_I2C_Type,
 354                                 (__u16)(start_address+i), &buffer[i], 0x01);
 355                 if (status) {
 356                         dbg("%s - ERROR %x", __func__, status);
 357                         return status;
 358                 }
 359         }
 360
 361         dbg("%s - start_address = %x, length = %d",
 362                                         __func__, start_address, length);
 363         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 364                                         __func__, length, buffer);
 365
 366         serial->TiReadI2C = 1;
 367
 368         return status;
 369 }
 370
 371 /* Write given block to TI EPROM memory */
 372 static int write_boot_mem(struct edgeport_serial *serial,
 373                                 int start_address, int length, __u8 *buffer)
 374 {
 375         int status = 0;
 376         int i;
 377         u8 *temp;
 378
 379         /* Must do a read before write */
 380         if (!serial->TiReadI2C) {
 381                 temp = kmalloc(1, GFP_KERNEL);
 382                 if (!temp) {
 383                         dev_err(&serial->serial->dev->dev,
 384                                         "%s - out of memory\n", __func__);
 385                         return -ENOMEM;
 386                 }
 387                 status = read_boot_mem(serial, 0, 1, temp);
 388                 kfree(temp);
 389                 if (status)
 390                         return status;
 391         }
 392
 393         for (i = 0; i < length; ++i) {
 394                 status = ti_vsend_sync(serial->serial->dev,
 395                                 UMPC_MEMORY_WRITE, buffer[i],
 396                                 (__u16)(i + start_address), NULL, 0);
 397                 if (status)
 398                         return status;
 399         }
 400
 401         dbg("%s - start_sddr = %x, length = %d",
 402                                         __func__, start_address, length);
 403         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 404                                         __func__, length, buffer);
 405
 406         return status;
 407 }
 408
 409
 410 /* Write edgeport I2C memory to TI chip */
 411 static int write_i2c_mem(struct edgeport_serial *serial,
 412                 int start_address, int length, __u8 address_type, __u8 *buffer)
 413 {
 414         int status = 0;
 415         int write_length;
 416         __be16 be_start_address;
 417
 418         /* We can only send a maximum of 1 aligned byte page at a time */
 419
 420         /* calculate the number of bytes left in the first page */
 421         write_length = EPROM_PAGE_SIZE -
 422                                 (start_address & (EPROM_PAGE_SIZE - 1));
 423
 424         if (write_length > length)
 425                 write_length = length;
 426
 427         dbg("%s - BytesInFirstPage Addr = %x, length = %d",
 428                                         __func__, start_address, write_length);
 429         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 430                                                 __func__, write_length, buffer);
 431
 432         /* Write first page */
 433         be_start_address = cpu_to_be16(start_address);
 434         status = ti_vsend_sync(serial->serial->dev,
 435                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 436                                 (__force __u16)be_start_address,
 437                                 buffer, write_length);
 438         if (status) {
 439                 dbg("%s - ERROR %d", __func__, status);
 440                 return status;
 441         }
 442
 443         length          -= write_length;
 444         start_address   += write_length;
 445         buffer          += write_length;
 446
 447         /* We should be aligned now -- can write
 448            max page size bytes at a time */
 449         while (length) {
 450                 if (length > EPROM_PAGE_SIZE)
 451                         write_length = EPROM_PAGE_SIZE;
 452                 else
 453                         write_length = length;
 454
 455                 dbg("%s - Page Write Addr = %x, length = %d",
 456                                         __func__, start_address, write_length);
 457                 usb_serial_debug_data(debug, &serial->serial->dev->dev,
 458                                         __func__, write_length, buffer);
 459
 460                 /* Write next page */
 461                 be_start_address = cpu_to_be16(start_address);
 462                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 463                                 (__u16)address_type,
 464                                 (__force __u16)be_start_address,
 465                                 buffer, write_length);
 466                 if (status) {
 467                         dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
 468                                         __func__, status);
 469                         return status;
 470                 }
 471
 472                 length          -= write_length;
 473                 start_address   += write_length;
 474                 buffer          += write_length;
 475         }
 476         return status;
 477 }
 478
 479 /* Examine the UMP DMA registers and LSR
 480  *
 481  * Check the MSBit of the X and Y DMA byte count registers.
 482  * A zero in this bit indicates that the TX DMA buffers are empty
 483  * then check the TX Empty bit in the UART.
 484  */
 485 static int tx_active(struct edgeport_port *port)
 486 {
 487         int status;
 488         struct out_endpoint_desc_block *oedb;
 489         __u8 *lsr;
 490         int bytes_left = 0;
 491
 492         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 493         if (!oedb) {
 494                 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
 495                 return -ENOMEM;
 496         }
 497
 498         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 499                                            as not all platforms can do DMA
 500                                            from stack */
 501         if (!lsr) {
 502                 kfree(oedb);
 503                 return -ENOMEM;
 504         }
 505         /* Read the DMA Count Registers */
 506         status = read_ram(port->port->serial->dev, port->dma_address,
 507                                                 sizeof(*oedb), (void *)oedb);
 508         if (status)
 509                 goto exit_is_tx_active;
 510
 511         dbg("%s - XByteCount    0x%X", __func__, oedb->XByteCount);
 512
 513         /* and the LSR */
 514         status = read_ram(port->port->serial->dev,
 515                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 516
 517         if (status)
 518                 goto exit_is_tx_active;
 519         dbg("%s - LSR = 0x%X", __func__, *lsr);
 520
 521         /* If either buffer has data or we are transmitting then return TRUE */
 522         if ((oedb->XByteCount & 0x80) != 0)
 523                 bytes_left += 64;
 524
 525         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 526                 bytes_left += 1;
 527
 528         /* We return Not Active if we get any kind of error */
 529 exit_is_tx_active:
 530         dbg("%s - return %d", __func__, bytes_left);
 531
 532         kfree(lsr);
 533         kfree(oedb);
 534         return bytes_left;
 535 }
 536
 537 static void chase_port(struct edgeport_port *port, unsigned long timeout,
 538                                                                 int flush)
 539 {
 540         int baud_rate;
 541         struct tty_struct *tty = tty_port_tty_get(&port->port->port);
 542         struct usb_serial *serial = port->port->serial;
 543         wait_queue_t wait;
 544         unsigned long flags;
 545
 546         if (!timeout)
 547                 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
 548
 549         /* wait for data to drain from the buffer */
 550         spin_lock_irqsave(&port->ep_lock, flags);
 551         init_waitqueue_entry(&wait, current);
 552         add_wait_queue(&tty->write_wait, &wait);
 553         for (;;) {
 554                 set_current_state(TASK_INTERRUPTIBLE);
 555                 if (kfifo_len(&port->write_fifo) == 0
 556                 || timeout == 0 || signal_pending(current)
 557                 || serial->disconnected)
 558                         /* disconnect */
 559                         break;
 560                 spin_unlock_irqrestore(&port->ep_lock, flags);
 561                 timeout = schedule_timeout(timeout);
 562                 spin_lock_irqsave(&port->ep_lock, flags);
 563         }
 564         set_current_state(TASK_RUNNING);
 565         remove_wait_queue(&tty->write_wait, &wait);
 566         if (flush)
 567                 kfifo_reset_out(&port->write_fifo);
 568         spin_unlock_irqrestore(&port->ep_lock, flags);
 569         tty_kref_put(tty);
 570
 571         /* wait for data to drain from the device */
 572         timeout += jiffies;
 573         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
 574                                                 && !serial->disconnected) {
 575                 /* not disconnected */
 576                 if (!tx_active(port))
 577                         break;
 578                 msleep(10);
 579         }
 580
 581         /* disconnected */
 582         if (serial->disconnected)
 583                 return;
 584
 585         /* wait one more character time, based on baud rate */
 586         /* (tx_active doesn't seem to wait for the last byte) */
 587         baud_rate = port->baud_rate;
 588         if (baud_rate == 0)
 589                 baud_rate = 50;
 590         msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
 591 }
 592
 593 static int choose_config(struct usb_device *dev)
 594 {
 595         /*
 596          * There may be multiple configurations on this device, in which case
 597          * we would need to read and parse all of them to find out which one
 598          * we want. However, we just support one config at this point,
 599          * configuration # 1, which is Config Descriptor 0.
 600          */
 601
 602         dbg("%s - Number of Interfaces = %d",
 603                                 __func__, dev->config->desc.bNumInterfaces);
 604         dbg("%s - MAX Power            = %d",
 605                                 __func__, dev->config->desc.bMaxPower * 2);
 606
 607         if (dev->config->desc.bNumInterfaces != 1) {
 608                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
 609                                                                 __func__);
 610                 return -ENODEV;
 611         }
 612
 613         return 0;
 614 }
 615
 616 static int read_rom(struct edgeport_serial *serial,
 617                                 int start_address, int length, __u8 *buffer)
 618 {
 619         int status;
 620
 621         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 622                 status = read_download_mem(serial->serial->dev,
 623                                                start_address,
 624                                                length,
 625                                                serial->TI_I2C_Type,
 626                                                buffer);
 627         } else {
 628                 status = read_boot_mem(serial, start_address, length,
 629                                                                 buffer);
 630         }
 631         return status;
 632 }
 633
 634 static int write_rom(struct edgeport_serial *serial, int start_address,
 635                                                 int length, __u8 *buffer)
 636 {
 637         if (serial->product_info.TiMode == TI_MODE_BOOT)
 638                 return write_boot_mem(serial, start_address, length,
 639                                                                 buffer);
 640
 641         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 642                 return write_i2c_mem(serial, start_address, length,
 643                                                 serial->TI_I2C_Type, buffer);
 644         return -EINVAL;
 645 }
 646
 647
 648
 649 /* Read a descriptor header from I2C based on type */
 650 static int get_descriptor_addr(struct edgeport_serial *serial,
 651                                 int desc_type, struct ti_i2c_desc *rom_desc)
 652 {
 653         int start_address;
 654         int status;
 655
 656         /* Search for requested descriptor in I2C */
 657         start_address = 2;
 658         do {
 659                 status = read_rom(serial,
 660                                    start_address,
 661                                    sizeof(struct ti_i2c_desc),
 662                                    (__u8 *)rom_desc);
 663                 if (status)
 664                         return 0;
 665
 666                 if (rom_desc->Type == desc_type)
 667                         return start_address;
 668
 669                 start_address = start_address + sizeof(struct ti_i2c_desc)
 670                                                         + rom_desc->Size;
 671
 672         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 673
 674         return 0;
 675 }
 676
 677 /* Validate descriptor checksum */
 678 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 679 {
 680         __u16 i;
 681         __u8 cs = 0;
 682
 683         for (i = 0; i < rom_desc->Size; i++)
 684                 cs = (__u8)(cs + buffer[i]);
 685
 686         if (cs != rom_desc->CheckSum) {
 687                 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 688                 return -EINVAL;
 689         }
 690         return 0;
 691 }
 692
 693 /* Make sure that the I2C image is good */
 694 static int check_i2c_image(struct edgeport_serial *serial)
 695 {
 696         struct device *dev = &serial->serial->dev->dev;
 697         int status = 0;
 698         struct ti_i2c_desc *rom_desc;
 699         int start_address = 2;
 700         __u8 *buffer;
 701         __u16 ttype;
 702
 703         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 704         if (!rom_desc) {
 705                 dev_err(dev, "%s - out of memory\n", __func__);
 706                 return -ENOMEM;
 707         }
 708         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 709         if (!buffer) {
 710                 dev_err(dev, "%s - out of memory when allocating buffer\n",
 711                                                                 __func__);
 712                 kfree(rom_desc);
 713                 return -ENOMEM;
 714         }
 715
 716         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 717         status = read_rom(serial, 0, 1, buffer);
 718         if (status)
 719                 goto out;
 720
 721         if (*buffer != UMP5152 && *buffer != UMP3410) {
 722                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 723                 status = -ENODEV;
 724                 goto out;
 725         }
 726
 727         do {
 728                 /* Validate the I2C */
 729                 status = read_rom(serial,
 730                                 start_address,
 731                                 sizeof(struct ti_i2c_desc),
 732                                 (__u8 *)rom_desc);
 733                 if (status)
 734                         break;
 735
 736                 if ((start_address + sizeof(struct ti_i2c_desc) +
 737                                         rom_desc->Size) > TI_MAX_I2C_SIZE) {
 738                         status = -ENODEV;
 739                         dbg("%s - structure too big, erroring out.", __func__);
 740                         break;
 741                 }
 742
 743                 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
 744
 745                 /* Skip type 2 record */
 746                 ttype = rom_desc->Type & 0x0f;
 747                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 748                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 749                         /* Read the descriptor data */
 750                         status = read_rom(serial, start_address +
 751                                                 sizeof(struct ti_i2c_desc),
 752                                                 rom_desc->Size, buffer);
 753                         if (status)
 754                                 break;
 755
 756                         status = valid_csum(rom_desc, buffer);
 757                         if (status)
 758                                 break;
 759                 }
 760                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 761                                                                 rom_desc->Size;
 762
 763         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 764                                 (start_address < TI_MAX_I2C_SIZE));
 765
 766         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 767                                 (start_address > TI_MAX_I2C_SIZE))
 768                 status = -ENODEV;
 769
 770 out:
 771         kfree(buffer);
 772         kfree(rom_desc);
 773         return status;
 774 }
 775
 776 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 777 {
 778         int status;
 779         int start_address;
 780         struct ti_i2c_desc *rom_desc;
 781         struct edge_ti_manuf_descriptor *desc;
 782
 783         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 784         if (!rom_desc) {
 785                 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
 786                                                                 __func__);
 787                 return -ENOMEM;
 788         }
 789         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 790                                                                 rom_desc);
 791
 792         if (!start_address) {
 793                 dbg("%s - Edge Descriptor not found in I2C", __func__);
 794                 status = -ENODEV;
 795                 goto exit;
 796         }
 797
 798         /* Read the descriptor data */
 799         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 800                                                 rom_desc->Size, buffer);
 801         if (status)
 802                 goto exit;
 803
 804         status = valid_csum(rom_desc, buffer);
 805
 806         desc = (struct edge_ti_manuf_descriptor *)buffer;
 807         dbg("%s - IonConfig      0x%x", __func__, desc->IonConfig);
 808         dbg("%s - Version          %d", __func__, desc->Version);
 809         dbg("%s - Cpu/Board      0x%x", __func__, desc->CpuRev_BoardRev);
 810         dbg("%s - NumPorts         %d", __func__, desc->NumPorts);
 811         dbg("%s - NumVirtualPorts  %d", __func__, desc->NumVirtualPorts);
 812         dbg("%s - TotalPorts       %d", __func__, desc->TotalPorts);
 813
 814 exit:
 815         kfree(rom_desc);
 816         return status;
 817 }
 818
 819 /* Build firmware header used for firmware update */
 820 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 821 {
 822         __u8 *buffer;
 823         int buffer_size;
 824         int i;
 825         int err;
 826         __u8 cs = 0;
 827         struct ti_i2c_desc *i2c_header;
 828         struct ti_i2c_image_header *img_header;
 829         struct ti_i2c_firmware_rec *firmware_rec;
 830         const struct firmware *fw;
 831         const char *fw_name = "edgeport/down3.bin";
 832
 833         /* In order to update the I2C firmware we must change the type 2 record
 834          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 835          * Then while in boot mode, the driver will download the latest
 836          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 837          * device comes back up in download mode the driver will cause the new
 838          * firmware to be copied from the UMP Ram to I2C and the firmware will
 839          * update the record type from 0xf2 to 0x02.
 840          */
 841
 842         /* Allocate a 15.5k buffer + 2 bytes for version number
 843          * (Firmware Record) */
 844         buffer_size = (((1024 * 16) - 512 ) +
 845                         sizeof(struct ti_i2c_firmware_rec));
 846
 847         buffer = kmalloc(buffer_size, GFP_KERNEL);
 848         if (!buffer) {
 849                 dev_err(dev, "%s - out of memory\n", __func__);
 850                 return -ENOMEM;
 851         }
 852
 853         // Set entire image of 0xffs
 854         memset(buffer, 0xff, buffer_size);
 855
 856         err = request_firmware(&fw, fw_name, dev);
 857         if (err) {
 858                 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
 859                        fw_name, err);
 860                 kfree(buffer);
 861                 return err;
 862         }
 863
 864         /* Save Download Version Number */
 865         OperationalMajorVersion = fw->data[0];
 866         OperationalMinorVersion = fw->data[1];
 867         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 868
 869         /* Copy version number into firmware record */
 870         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 871
 872         firmware_rec->Ver_Major = OperationalMajorVersion;
 873         firmware_rec->Ver_Minor = OperationalMinorVersion;
 874
 875         /* Pointer to fw_down memory image */
 876         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 877
 878         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 879                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 880                 le16_to_cpu(img_header->Length));
 881
 882         release_firmware(fw);
 883
 884         for (i=0; i < buffer_size; i++) {
 885                 cs = (__u8)(cs + buffer[i]);
 886         }
 887
 888         kfree(buffer);
 889
 890         /* Build new header */
 891         i2c_header =  (struct ti_i2c_desc *)header;
 892         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 893
 894         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 895         i2c_header->Size        = (__u16)buffer_size;
 896         i2c_header->CheckSum    = cs;
 897         firmware_rec->Ver_Major = OperationalMajorVersion;
 898         firmware_rec->Ver_Minor = OperationalMinorVersion;
 899
 900         return 0;
 901 }
 902
 903 /* Try to figure out what type of I2c we have */
 904 static int i2c_type_bootmode(struct edgeport_serial *serial)
 905 {
 906         int status;
 907         u8 *data;
 908
 909         data = kmalloc(1, GFP_KERNEL);
 910         if (!data) {
 911                 dev_err(&serial->serial->dev->dev,
 912                                 "%s - out of memory\n", __func__);
 913                 return -ENOMEM;
 914         }
 915
 916         /* Try to read type 2 */
 917         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 918                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 919         if (status)
 920                 dbg("%s - read 2 status error = %d", __func__, status);
 921         else
 922                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 923         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 924                 dbg("%s - ROM_TYPE_II", __func__);
 925                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 926                 goto out;
 927         }
 928
 929         /* Try to read type 3 */
 930         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 931                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 932         if (status)
 933                 dbg("%s - read 3 status error = %d", __func__, status);
 934         else
 935                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 936         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 937                 dbg("%s - ROM_TYPE_III", __func__);
 938                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 939                 goto out;
 940         }
 941
 942         dbg("%s - Unknown", __func__);
 943         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 944         status = -ENODEV;
 945 out:
 946         kfree(data);
 947         return status;
 948 }
 949
 950 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 951                                                 int length, int *num_sent)
 952 {
 953         int status;
 954
 955         status = usb_bulk_msg(serial->dev,
 956                         usb_sndbulkpipe(serial->dev,
 957                                 serial->port[0]->bulk_out_endpointAddress),
 958                         buffer, length, num_sent, 1000);
 959         return status;
 960 }
 961
 962 /* Download given firmware image to the device (IN BOOT MODE) */
 963 static int download_code(struct edgeport_serial *serial, __u8 *image,
 964                                                         int image_length)
 965 {
 966         int status = 0;
 967         int pos;
 968         int transfer;
 969         int done;
 970
 971         /* Transfer firmware image */
 972         for (pos = 0; pos < image_length; ) {
 973                 /* Read the next buffer from file */
 974                 transfer = image_length - pos;
 975                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 976                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 977
 978                 /* Transfer data */
 979                 status = bulk_xfer(serial->serial, &image[pos],
 980                                                         transfer, &done);
 981                 if (status)
 982                         break;
 983                 /* Advance buffer pointer */
 984                 pos += done;
 985         }
 986
 987         return status;
 988 }
 989
 990 /* FIXME!!! */
 991 static int config_boot_dev(struct usb_device *dev)
 992 {
 993         return 0;
 994 }
 995
 996 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
 997 {
 998         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
 999 }
1000
1001 /**
1002  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1003  *
1004  * This routine downloads the main operating code into the TI5052, using the
1005  * boot code already burned into E2PROM or ROM.
1006  */
1007 static int download_fw(struct edgeport_serial *serial)
1008 {
1009         struct device *dev = &serial->serial->dev->dev;
1010         int status = 0;
1011         int start_address;
1012         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1013         struct usb_interface_descriptor *interface;
1014         int download_cur_ver;
1015         int download_new_ver;
1016
1017         /* This routine is entered by both the BOOT mode and the Download mode
1018          * We can determine which code is running by the reading the config
1019          * descriptor and if we have only one bulk pipe it is in boot mode
1020          */
1021         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1022
1023         /* Default to type 2 i2c */
1024         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1025
1026         status = choose_config(serial->serial->dev);
1027         if (status)
1028                 return status;
1029
1030         interface = &serial->serial->interface->cur_altsetting->desc;
1031         if (!interface) {
1032                 dev_err(dev, "%s - no interface set, error!\n", __func__);
1033                 return -ENODEV;
1034         }
1035
1036         /*
1037          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1038          * if we have more than one endpoint we are definitely in download
1039          * mode
1040          */
1041         if (interface->bNumEndpoints > 1)
1042                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1043         else
1044                 /* Otherwise we will remain in configuring mode */
1045                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1046
1047         /********************************************************************/
1048         /* Download Mode */
1049         /********************************************************************/
1050         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1051                 struct ti_i2c_desc *rom_desc;
1052
1053                 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1054
1055                 status = check_i2c_image(serial);
1056                 if (status) {
1057                         dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1058                         return status;
1059                 }
1060
1061                 /* Validate Hardware version number
1062                  * Read Manufacturing Descriptor from TI Based Edgeport
1063                  */
1064                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1065                 if (!ti_manuf_desc) {
1066                         dev_err(dev, "%s - out of memory.\n", __func__);
1067                         return -ENOMEM;
1068                 }
1069                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1070                 if (status) {
1071                         kfree(ti_manuf_desc);
1072                         return status;
1073                 }
1074
1075                 /* Check version number of ION descriptor */
1076                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1077                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1078                                 __func__, ti_cpu_rev(ti_manuf_desc));
1079                         kfree(ti_manuf_desc);
1080                         return -EINVAL;
1081                 }
1082
1083                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1084                 if (!rom_desc) {
1085                         dev_err(dev, "%s - out of memory.\n", __func__);
1086                         kfree(ti_manuf_desc);
1087                         return -ENOMEM;
1088                 }
1089
1090                 /* Search for type 2 record (firmware record) */
1091                 start_address = get_descriptor_addr(serial,
1092                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1093                 if (start_address != 0) {
1094                         struct ti_i2c_firmware_rec *firmware_version;
1095                         u8 *record;
1096
1097                         dbg("%s - Found Type FIRMWARE (Type 2) record",
1098                                                                 __func__);
1099
1100                         firmware_version = kmalloc(sizeof(*firmware_version),
1101                                                                 GFP_KERNEL);
1102                         if (!firmware_version) {
1103                                 dev_err(dev, "%s - out of memory.\n", __func__);
1104                                 kfree(rom_desc);
1105                                 kfree(ti_manuf_desc);
1106                                 return -ENOMEM;
1107                         }
1108
1109                         /* Validate version number
1110                          * Read the descriptor data
1111                          */
1112                         status = read_rom(serial, start_address +
1113                                         sizeof(struct ti_i2c_desc),
1114                                         sizeof(struct ti_i2c_firmware_rec),
1115                                         (__u8 *)firmware_version);
1116                         if (status) {
1117                                 kfree(firmware_version);
1118                                 kfree(rom_desc);
1119                                 kfree(ti_manuf_desc);
1120                                 return status;
1121                         }
1122
1123                         /* Check version number of download with current
1124                            version in I2c */
1125                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1126                                            (firmware_version->Ver_Minor);
1127                         download_new_ver = (OperationalMajorVersion << 8) +
1128                                            (OperationalMinorVersion);
1129
1130                         dbg("%s - >> FW Versions Device %d.%d  Driver %d.%d",
1131                             __func__,
1132                             firmware_version->Ver_Major,
1133                             firmware_version->Ver_Minor,
1134                             OperationalMajorVersion,
1135                             OperationalMinorVersion);
1136
1137                         /* Check if we have an old version in the I2C and
1138                            update if necessary */
1139                         if (download_cur_ver < download_new_ver) {
1140                                 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1141                                     __func__,
1142                                     firmware_version->Ver_Major,
1143                                     firmware_version->Ver_Minor,
1144                                     OperationalMajorVersion,
1145                                     OperationalMinorVersion);
1146
1147                                 record = kmalloc(1, GFP_KERNEL);
1148                                 if (!record) {
1149                                         dev_err(dev, "%s - out of memory.\n",
1150                                                         __func__);
1151                                         kfree(firmware_version);
1152                                         kfree(rom_desc);
1153                                         kfree(ti_manuf_desc);
1154                                         return -ENOMEM;
1155                                 }
1156                                 /* In order to update the I2C firmware we must
1157                                  * change the type 2 record to type 0xF2. This
1158                                  * will force the UMP to come up in Boot Mode.
1159                                  * Then while in boot mode, the driver will
1160                                  * download the latest firmware (padded to
1161                                  * 15.5k) into the UMP ram. Finally when the
1162                                  * device comes back up in download mode the
1163                                  * driver will cause the new firmware to be
1164                                  * copied from the UMP Ram to I2C and the
1165                                  * firmware will update the record type from
1166                                  * 0xf2 to 0x02.
1167                                  */
1168                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1169
1170                                 /* Change the I2C Firmware record type to
1171                                    0xf2 to trigger an update */
1172                                 status = write_rom(serial, start_address,
1173                                                 sizeof(*record), record);
1174                                 if (status) {
1175                                         kfree(record);
1176                                         kfree(firmware_version);
1177                                         kfree(rom_desc);
1178                                         kfree(ti_manuf_desc);
1179                                         return status;
1180                                 }
1181
1182                                 /* verify the write -- must do this in order
1183                                  * for write to complete before we do the
1184                                  * hardware reset
1185                                  */
1186                                 status = read_rom(serial,
1187                                                         start_address,
1188                                                         sizeof(*record),
1189                                                         record);
1190                                 if (status) {
1191                                         kfree(record);
1192                                         kfree(firmware_version);
1193                                         kfree(rom_desc);
1194                                         kfree(ti_manuf_desc);
1195                                         return status;
1196                                 }
1197
1198                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1199                                         dev_err(dev,
1200                                                 "%s - error resetting device\n",
1201                                                 __func__);
1202                                         kfree(record);
1203                                         kfree(firmware_version);
1204                                         kfree(rom_desc);
1205                                         kfree(ti_manuf_desc);
1206                                         return -ENODEV;
1207                                 }
1208
1209                                 dbg("%s - HARDWARE RESET", __func__);
1210
1211                                 /* Reset UMP -- Back to BOOT MODE */
1212                                 status = ti_vsend_sync(serial->serial->dev,
1213                                                 UMPC_HARDWARE_RESET,
1214                                                 0, 0, NULL, 0);
1215
1216                                 dbg("%s - HARDWARE RESET return %d",
1217                                                 __func__, status);
1218
1219                                 /* return an error on purpose. */
1220                                 kfree(record);
1221                                 kfree(firmware_version);
1222                                 kfree(rom_desc);
1223                                 kfree(ti_manuf_desc);
1224                                 return -ENODEV;
1225                         }
1226                         kfree(firmware_version);
1227                 }
1228                 /* Search for type 0xF2 record (firmware blank record) */
1229                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1230 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1231                                         sizeof(struct ti_i2c_firmware_rec))
1232                         __u8 *header;
1233                         __u8 *vheader;
1234
1235                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1236                         if (!header) {
1237                                 dev_err(dev, "%s - out of memory.\n", __func__);
1238                                 kfree(rom_desc);
1239                                 kfree(ti_manuf_desc);
1240                                 return -ENOMEM;
1241                         }
1242
1243                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1244                         if (!vheader) {
1245                                 dev_err(dev, "%s - out of memory.\n", __func__);
1246                                 kfree(header);
1247                                 kfree(rom_desc);
1248                                 kfree(ti_manuf_desc);
1249                                 return -ENOMEM;
1250                         }
1251
1252                         dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1253                                                                 __func__);
1254
1255                         /*
1256                          * In order to update the I2C firmware we must change
1257                          * the type 2 record to type 0xF2. This will force the
1258                          * UMP to come up in Boot Mode.  Then while in boot
1259                          * mode, the driver will download the latest firmware
1260                          * (padded to 15.5k) into the UMP ram. Finally when the
1261                          * device comes back up in download mode the driver
1262                          * will cause the new firmware to be copied from the
1263                          * UMP Ram to I2C and the firmware will update the
1264                          * record type from 0xf2 to 0x02.
1265                          */
1266                         status = build_i2c_fw_hdr(header, dev);
1267                         if (status) {
1268                                 kfree(vheader);
1269                                 kfree(header);
1270                                 kfree(rom_desc);
1271                                 kfree(ti_manuf_desc);
1272                                 return -EINVAL;
1273                         }
1274
1275                         /* Update I2C with type 0xf2 record with correct
1276                            size and checksum */
1277                         status = write_rom(serial,
1278                                                 start_address,
1279                                                 HEADER_SIZE,
1280                                                 header);
1281                         if (status) {
1282                                 kfree(vheader);
1283                                 kfree(header);
1284                                 kfree(rom_desc);
1285                                 kfree(ti_manuf_desc);
1286                                 return -EINVAL;
1287                         }
1288
1289                         /* verify the write -- must do this in order for
1290                            write to complete before we do the hardware reset */
1291                         status = read_rom(serial, start_address,
1292                                                         HEADER_SIZE, vheader);
1293
1294                         if (status) {
1295                                 dbg("%s - can't read header back", __func__);
1296                                 kfree(vheader);
1297                                 kfree(header);
1298                                 kfree(rom_desc);
1299                                 kfree(ti_manuf_desc);
1300                                 return status;
1301                         }
1302                         if (memcmp(vheader, header, HEADER_SIZE)) {
1303                                 dbg("%s - write download record failed",
1304                                         __func__);
1305                                 kfree(vheader);
1306                                 kfree(header);
1307                                 kfree(rom_desc);
1308                                 kfree(ti_manuf_desc);
1309                                 return -EINVAL;
1310                         }
1311
1312                         kfree(vheader);
1313                         kfree(header);
1314
1315                         dbg("%s - Start firmware update", __func__);
1316
1317                         /* Tell firmware to copy download image into I2C */
1318                         status = ti_vsend_sync(serial->serial->dev,
1319                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1320
1321                         dbg("%s - Update complete 0x%x", __func__, status);
1322                         if (status) {
1323                                 dev_err(dev,
1324                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1325                                                                 __func__);
1326                                 kfree(rom_desc);
1327                                 kfree(ti_manuf_desc);
1328                                 return status;
1329                         }
1330                 }
1331
1332                 // The device is running the download code
1333                 kfree(rom_desc);
1334                 kfree(ti_manuf_desc);
1335                 return 0;
1336         }
1337
1338         /********************************************************************/
1339         /* Boot Mode */
1340         /********************************************************************/
1341         dbg("%s - RUNNING IN BOOT MODE", __func__);
1342
1343         /* Configure the TI device so we can use the BULK pipes for download */
1344         status = config_boot_dev(serial->serial->dev);
1345         if (status)
1346                 return status;
1347
1348         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1349                                                         != USB_VENDOR_ID_ION) {
1350                 dbg("%s - VID = 0x%x", __func__,
1351                      le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1352                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1353                 goto stayinbootmode;
1354         }
1355
1356         /* We have an ION device (I2c Must be programmed)
1357            Determine I2C image type */
1358         if (i2c_type_bootmode(serial))
1359                 goto stayinbootmode;
1360
1361         /* Check for ION Vendor ID and that the I2C is valid */
1362         if (!check_i2c_image(serial)) {
1363                 struct ti_i2c_image_header *header;
1364                 int i;
1365                 __u8 cs = 0;
1366                 __u8 *buffer;
1367                 int buffer_size;
1368                 int err;
1369                 const struct firmware *fw;
1370                 const char *fw_name = "edgeport/down3.bin";
1371
1372                 /* Validate Hardware version number
1373                  * Read Manufacturing Descriptor from TI Based Edgeport
1374                  */
1375                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1376                 if (!ti_manuf_desc) {
1377                         dev_err(dev, "%s - out of memory.\n", __func__);
1378                         return -ENOMEM;
1379                 }
1380                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1381                 if (status) {
1382                         kfree(ti_manuf_desc);
1383                         goto stayinbootmode;
1384                 }
1385
1386                 /* Check for version 2 */
1387                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1388                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1389                                         __func__, ti_cpu_rev(ti_manuf_desc));
1390                         kfree(ti_manuf_desc);
1391                         goto stayinbootmode;
1392                 }
1393
1394                 kfree(ti_manuf_desc);
1395
1396                 /*
1397                  * In order to update the I2C firmware we must change the type
1398                  * 2 record to type 0xF2. This will force the UMP to come up
1399                  * in Boot Mode.  Then while in boot mode, the driver will
1400                  * download the latest firmware (padded to 15.5k) into the
1401                  * UMP ram. Finally when the device comes back up in download
1402                  * mode the driver will cause the new firmware to be copied
1403                  * from the UMP Ram to I2C and the firmware will update the
1404                  * record type from 0xf2 to 0x02.
1405                  *
1406                  * Do we really have to copy the whole firmware image,
1407                  * or could we do this in place!
1408                  */
1409
1410                 /* Allocate a 15.5k buffer + 3 byte header */
1411                 buffer_size = (((1024 * 16) - 512) +
1412                                         sizeof(struct ti_i2c_image_header));
1413                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1414                 if (!buffer) {
1415                         dev_err(dev, "%s - out of memory\n", __func__);
1416                         return -ENOMEM;
1417                 }
1418
1419                 /* Initialize the buffer to 0xff (pad the buffer) */
1420                 memset(buffer, 0xff, buffer_size);
1421
1422                 err = request_firmware(&fw, fw_name, dev);
1423                 if (err) {
1424                         printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1425                                fw_name, err);
1426                         kfree(buffer);
1427                         return err;
1428                 }
1429                 memcpy(buffer, &fw->data[4], fw->size - 4);
1430                 release_firmware(fw);
1431
1432                 for (i = sizeof(struct ti_i2c_image_header);
1433                                 i < buffer_size; i++) {
1434                         cs = (__u8)(cs + buffer[i]);
1435                 }
1436
1437                 header = (struct ti_i2c_image_header *)buffer;
1438
1439                 /* update length and checksum after padding */
1440                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1441                                         sizeof(struct ti_i2c_image_header)));
1442                 header->CheckSum = cs;
1443
1444                 /* Download the operational code  */
1445                 dbg("%s - Downloading operational code image (TI UMP)",
1446                                                                 __func__);
1447                 status = download_code(serial, buffer, buffer_size);
1448
1449                 kfree(buffer);
1450
1451                 if (status) {
1452                         dbg("%s - Error downloading operational code image",
1453                                                                 __func__);
1454                         return status;
1455                 }
1456
1457                 /* Device will reboot */
1458                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1459
1460                 dbg("%s - Download successful -- Device rebooting...",
1461                                                                 __func__);
1462
1463                 /* return an error on purpose */
1464                 return -ENODEV;
1465         }
1466
1467 stayinbootmode:
1468         /* Eprom is invalid or blank stay in boot mode */
1469         dbg("%s - STAYING IN BOOT MODE", __func__);
1470         serial->product_info.TiMode = TI_MODE_BOOT;
1471
1472         return 0;
1473 }
1474
1475
1476 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1477 {
1478         int port_number = port->port->number - port->port->serial->minor;
1479         on = !!on;      /* 1 or 0 not bitmask */
1480         return send_cmd(port->port->serial->dev,
1481                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1482                         on, NULL, 0);
1483 }
1484
1485
1486 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1487 {
1488         int status = 0;
1489
1490         dbg("%s - %x", __func__, mcr);
1491
1492         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1493         if (status)
1494                 return status;
1495         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1496         if (status)
1497                 return status;
1498         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1499 }
1500
1501 /* Convert TI LSR to standard UART flags */
1502 static __u8 map_line_status(__u8 ti_lsr)
1503 {
1504         __u8 lsr = 0;
1505
1506 #define MAP_FLAG(flagUmp, flagUart)    \
1507         if (ti_lsr & flagUmp) \
1508                 lsr |= flagUart;
1509
1510         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1511         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1512         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1513         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1514         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1515         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1516
1517 #undef MAP_FLAG
1518
1519         return lsr;
1520 }
1521
1522 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1523 {
1524         struct async_icount *icount;
1525         struct tty_struct *tty;
1526
1527         dbg("%s - %02x", __func__, msr);
1528
1529         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1530                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1531                 icount = &edge_port->icount;
1532
1533                 /* update input line counters */
1534                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1535                         icount->cts++;
1536                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1537                         icount->dsr++;
1538                 if (msr & EDGEPORT_MSR_DELTA_CD)
1539                         icount->dcd++;
1540                 if (msr & EDGEPORT_MSR_DELTA_RI)
1541                         icount->rng++;
1542                 wake_up_interruptible(&edge_port->delta_msr_wait);
1543         }
1544
1545         /* Save the new modem status */
1546         edge_port->shadow_msr = msr & 0xf0;
1547
1548         tty = tty_port_tty_get(&edge_port->port->port);
1549         /* handle CTS flow control */
1550         if (tty && C_CRTSCTS(tty)) {
1551                 if (msr & EDGEPORT_MSR_CTS) {
1552                         tty->hw_stopped = 0;
1553                         tty_wakeup(tty);
1554                 } else {
1555                         tty->hw_stopped = 1;
1556                 }
1557         }
1558         tty_kref_put(tty);
1559 }
1560
1561 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1562                                                         __u8 lsr, __u8 data)
1563 {
1564         struct async_icount *icount;
1565         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1566                                                 LSR_FRM_ERR | LSR_BREAK));
1567         struct tty_struct *tty;
1568
1569         dbg("%s - %02x", __func__, new_lsr);
1570
1571         edge_port->shadow_lsr = lsr;
1572
1573         if (new_lsr & LSR_BREAK)
1574                 /*
1575                  * Parity and Framing errors only count if they
1576                  * occur exclusive of a break being received.
1577                  */
1578                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1579
1580         /* Place LSR data byte into Rx buffer */
1581         if (lsr_data) {
1582                 tty = tty_port_tty_get(&edge_port->port->port);
1583                 if (tty) {
1584                         edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1585                         tty_kref_put(tty);
1586                 }
1587         }
1588
1589         /* update input line counters */
1590         icount = &edge_port->icount;
1591         if (new_lsr & LSR_BREAK)
1592                 icount->brk++;
1593         if (new_lsr & LSR_OVER_ERR)
1594                 icount->overrun++;
1595         if (new_lsr & LSR_PAR_ERR)
1596                 icount->parity++;
1597         if (new_lsr & LSR_FRM_ERR)
1598                 icount->frame++;
1599 }
1600
1601
1602 static void edge_interrupt_callback(struct urb *urb)
1603 {
1604         struct edgeport_serial *edge_serial = urb->context;
1605         struct usb_serial_port *port;
1606         struct edgeport_port *edge_port;
1607         unsigned char *data = urb->transfer_buffer;
1608         int length = urb->actual_length;
1609         int port_number;
1610         int function;
1611         int retval;
1612         __u8 lsr;
1613         __u8 msr;
1614         int status = urb->status;
1615
1616         dbg("%s", __func__);
1617
1618         switch (status) {
1619         case 0:
1620                 /* success */
1621                 break;
1622         case -ECONNRESET:
1623         case -ENOENT:
1624         case -ESHUTDOWN:
1625                 /* this urb is terminated, clean up */
1626                 dbg("%s - urb shutting down with status: %d",
1627                     __func__, status);
1628                 return;
1629         default:
1630                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1631                         "%d\n", __func__, status);
1632                 goto exit;
1633         }
1634
1635         if (!length) {
1636                 dbg("%s - no data in urb", __func__);
1637                 goto exit;
1638         }
1639
1640         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1641                                                 __func__, length, data);
1642
1643         if (length != 2) {
1644                 dbg("%s - expecting packet of size 2, got %d",
1645                                                         __func__, length);
1646                 goto exit;
1647         }
1648
1649         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1650         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1651         dbg("%s - port_number %d, function %d, info 0x%x",
1652              __func__, port_number, function, data[1]);
1653         port = edge_serial->serial->port[port_number];
1654         edge_port = usb_get_serial_port_data(port);
1655         if (!edge_port) {
1656                 dbg("%s - edge_port not found", __func__);
1657                 return;
1658         }
1659         switch (function) {
1660         case TIUMP_INTERRUPT_CODE_LSR:
1661                 lsr = map_line_status(data[1]);
1662                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1663                         /* Save the LSR event for bulk read
1664                            completion routine */
1665                         dbg("%s - LSR Event Port %u LSR Status = %02x",
1666                              __func__, port_number, lsr);
1667                         edge_port->lsr_event = 1;
1668                         edge_port->lsr_mask = lsr;
1669                 } else {
1670                         dbg("%s - ===== Port %d LSR Status = %02x ======",
1671                              __func__, port_number, lsr);
1672                         handle_new_lsr(edge_port, 0, lsr, 0);
1673                 }
1674                 break;
1675
1676         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1677                 /* Copy MSR from UMP */
1678                 msr = data[1];
1679                 dbg("%s - ===== Port %u MSR Status = %02x ======",
1680                      __func__, port_number, msr);
1681                 handle_new_msr(edge_port, msr);
1682                 break;
1683
1684         default:
1685                 dev_err(&urb->dev->dev,
1686                         "%s - Unknown Interrupt code from UMP %x\n",
1687                         __func__, data[1]);
1688                 break;
1689
1690         }
1691
1692 exit:
1693         retval = usb_submit_urb(urb, GFP_ATOMIC);
1694         if (retval)
1695                 dev_err(&urb->dev->dev,
1696                         "%s - usb_submit_urb failed with result %d\n",
1697                          __func__, retval);
1698 }
1699
1700 static void edge_bulk_in_callback(struct urb *urb)
1701 {
1702         struct edgeport_port *edge_port = urb->context;
1703         unsigned char *data = urb->transfer_buffer;
1704         struct tty_struct *tty;
1705         int retval = 0;
1706         int port_number;
1707         int status = urb->status;
1708
1709         dbg("%s", __func__);
1710
1711         switch (status) {
1712         case 0:
1713                 /* success */
1714                 break;
1715         case -ECONNRESET:
1716         case -ENOENT:
1717         case -ESHUTDOWN:
1718                 /* this urb is terminated, clean up */
1719                 dbg("%s - urb shutting down with status: %d",
1720                     __func__, status);
1721                 return;
1722         default:
1723                 dev_err(&urb->dev->dev,
1724                         "%s - nonzero read bulk status received: %d\n",
1725                              __func__, status);
1726         }
1727
1728         if (status == -EPIPE)
1729                 goto exit;
1730
1731         if (status) {
1732                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1733                 return;
1734         }
1735
1736         port_number = edge_port->port->number - edge_port->port->serial->minor;
1737
1738         if (edge_port->lsr_event) {
1739                 edge_port->lsr_event = 0;
1740                 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1741                      __func__, port_number, edge_port->lsr_mask, *data);
1742                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1743                 /* Adjust buffer length/pointer */
1744                 --urb->actual_length;
1745                 ++data;
1746         }
1747
1748         tty = tty_port_tty_get(&edge_port->port->port);
1749         if (tty && urb->actual_length) {
1750                 usb_serial_debug_data(debug, &edge_port->port->dev,
1751                                         __func__, urb->actual_length, data);
1752                 if (edge_port->close_pending)
1753                         dbg("%s - close pending, dropping data on the floor",
1754                                                                 __func__);
1755                 else
1756                         edge_tty_recv(&edge_port->port->dev, tty, data,
1757                                                         urb->actual_length);
1758                 edge_port->icount.rx += urb->actual_length;
1759         }
1760         tty_kref_put(tty);
1761
1762 exit:
1763         /* continue read unless stopped */
1764         spin_lock(&edge_port->ep_lock);
1765         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1766                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1767         else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1768                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1769
1770         spin_unlock(&edge_port->ep_lock);
1771         if (retval)
1772                 dev_err(&urb->dev->dev,
1773                         "%s - usb_submit_urb failed with result %d\n",
1774                          __func__, retval);
1775 }
1776
1777 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1778                                         unsigned char *data, int length)
1779 {
1780         int queued;
1781
1782         queued = tty_insert_flip_string(tty, data, length);
1783         if (queued < length)
1784                 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1785                         __func__, length - queued);
1786         tty_flip_buffer_push(tty);
1787 }
1788
1789 static void edge_bulk_out_callback(struct urb *urb)
1790 {
1791         struct usb_serial_port *port = urb->context;
1792         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1793         int status = urb->status;
1794         struct tty_struct *tty;
1795
1796         dbg("%s - port %d", __func__, port->number);
1797
1798         edge_port->ep_write_urb_in_use = 0;
1799
1800         switch (status) {
1801         case 0:
1802                 /* success */
1803                 break;
1804         case -ECONNRESET:
1805         case -ENOENT:
1806         case -ESHUTDOWN:
1807                 /* this urb is terminated, clean up */
1808                 dbg("%s - urb shutting down with status: %d",
1809                     __func__, status);
1810                 return;
1811         default:
1812                 dev_err_console(port, "%s - nonzero write bulk status "
1813                         "received: %d\n", __func__, status);
1814         }
1815
1816         /* send any buffered data */
1817         tty = tty_port_tty_get(&port->port);
1818         edge_send(tty);
1819         tty_kref_put(tty);
1820 }
1821
1822 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1823 {
1824         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1825         struct edgeport_serial *edge_serial;
1826         struct usb_device *dev;
1827         struct urb *urb;
1828         int port_number;
1829         int status;
1830         u16 open_settings;
1831         u8 transaction_timeout;
1832
1833         dbg("%s - port %d", __func__, port->number);
1834
1835         if (edge_port == NULL)
1836                 return -ENODEV;
1837
1838         port_number = port->number - port->serial->minor;
1839         switch (port_number) {
1840         case 0:
1841                 edge_port->uart_base = UMPMEM_BASE_UART1;
1842                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1843                 break;
1844         case 1:
1845                 edge_port->uart_base = UMPMEM_BASE_UART2;
1846                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1847                 break;
1848         default:
1849                 dev_err(&port->dev, "Unknown port number!!!\n");
1850                 return -ENODEV;
1851         }
1852
1853         dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1854                                 __func__, port_number, edge_port->uart_base,
1855                                 edge_port->dma_address);
1856
1857         dev = port->serial->dev;
1858
1859         memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1860         init_waitqueue_head(&edge_port->delta_msr_wait);
1861
1862         /* turn off loopback */
1863         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1864         if (status) {
1865                 dev_err(&port->dev,
1866                                 "%s - cannot send clear loopback command, %d\n",
1867                         __func__, status);
1868                 return status;
1869         }
1870
1871         /* set up the port settings */
1872         if (tty)
1873                 edge_set_termios(tty, port, tty->termios);
1874
1875         /* open up the port */
1876
1877         /* milliseconds to timeout for DMA transfer */
1878         transaction_timeout = 2;
1879
1880         edge_port->ump_read_timeout =
1881                                 max(20, ((transaction_timeout * 3) / 2));
1882
1883         /* milliseconds to timeout for DMA transfer */
1884         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1885                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1886                              (transaction_timeout << 2));
1887
1888         dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1889
1890         /* Tell TI to open and start the port */
1891         status = send_cmd(dev, UMPC_OPEN_PORT,
1892                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1893         if (status) {
1894                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1895                                                         __func__, status);
1896                 return status;
1897         }
1898
1899         /* Start the DMA? */
1900         status = send_cmd(dev, UMPC_START_PORT,
1901                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1902         if (status) {
1903                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1904                                                         __func__, status);
1905                 return status;
1906         }
1907
1908         /* Clear TX and RX buffers in UMP */
1909         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1910         if (status) {
1911                 dev_err(&port->dev,
1912                         "%s - cannot send clear buffers command, %d\n",
1913                         __func__, status);
1914                 return status;
1915         }
1916
1917         /* Read Initial MSR */
1918         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1919                                 (__u16)(UMPM_UART1_PORT + port_number),
1920                                 &edge_port->shadow_msr, 1);
1921         if (status) {
1922                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1923                                                         __func__, status);
1924                 return status;
1925         }
1926
1927         dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1928
1929         /* Set Initial MCR */
1930         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1931         dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1932
1933         edge_serial = edge_port->edge_serial;
1934         if (mutex_lock_interruptible(&edge_serial->es_lock))
1935                 return -ERESTARTSYS;
1936         if (edge_serial->num_ports_open == 0) {
1937                 /* we are the first port to open, post the interrupt urb */
1938                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1939                 if (!urb) {
1940                         dev_err(&port->dev,
1941                                 "%s - no interrupt urb present, exiting\n",
1942                                 __func__);
1943                         status = -EINVAL;
1944                         goto release_es_lock;
1945                 }
1946                 urb->context = edge_serial;
1947                 status = usb_submit_urb(urb, GFP_KERNEL);
1948                 if (status) {
1949                         dev_err(&port->dev,
1950                                 "%s - usb_submit_urb failed with value %d\n",
1951                                         __func__, status);
1952                         goto release_es_lock;
1953                 }
1954         }
1955
1956         /*
1957          * reset the data toggle on the bulk endpoints to work around bug in
1958          * host controllers where things get out of sync some times
1959          */
1960         usb_clear_halt(dev, port->write_urb->pipe);
1961         usb_clear_halt(dev, port->read_urb->pipe);
1962
1963         /* start up our bulk read urb */
1964         urb = port->read_urb;
1965         if (!urb) {
1966                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1967                                                                 __func__);
1968                 status = -EINVAL;
1969                 goto unlink_int_urb;
1970         }
1971         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1972         urb->context = edge_port;
1973         status = usb_submit_urb(urb, GFP_KERNEL);
1974         if (status) {
1975                 dev_err(&port->dev,
1976                         "%s - read bulk usb_submit_urb failed with value %d\n",
1977                                 __func__, status);
1978                 goto unlink_int_urb;
1979         }
1980
1981         ++edge_serial->num_ports_open;
1982
1983         dbg("%s - exited", __func__);
1984
1985         goto release_es_lock;
1986
1987 unlink_int_urb:
1988         if (edge_port->edge_serial->num_ports_open == 0)
1989                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1990 release_es_lock:
1991         mutex_unlock(&edge_serial->es_lock);
1992         return status;
1993 }
1994
1995 static void edge_close(struct usb_serial_port *port)
1996 {
1997         struct edgeport_serial *edge_serial;
1998         struct edgeport_port *edge_port;
1999         struct usb_serial *serial = port->serial;
2000         int port_number;
2001
2002         dbg("%s - port %d", __func__, port->number);
2003
2004         edge_serial = usb_get_serial_data(port->serial);
2005         edge_port = usb_get_serial_port_data(port);
2006         if (edge_serial == NULL || edge_port == NULL)
2007                 return;
2008
2009         /* The bulkreadcompletion routine will check
2010          * this flag and dump add read data */
2011         edge_port->close_pending = 1;
2012
2013         /* chase the port close and flush */
2014         chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2015
2016         usb_kill_urb(port->read_urb);
2017         usb_kill_urb(port->write_urb);
2018         edge_port->ep_write_urb_in_use = 0;
2019
2020         /* assuming we can still talk to the device,
2021          * send a close port command to it */
2022         dbg("%s - send umpc_close_port", __func__);
2023         port_number = port->number - port->serial->minor;
2024
2025         mutex_lock(&serial->disc_mutex);
2026         if (!serial->disconnected) {
2027                 send_cmd(serial->dev,
2028                                      UMPC_CLOSE_PORT,
2029                                      (__u8)(UMPM_UART1_PORT + port_number),
2030                                      0,
2031                                      NULL,
2032                                      0);
2033         }
2034         mutex_unlock(&serial->disc_mutex);
2035
2036         mutex_lock(&edge_serial->es_lock);
2037         --edge_port->edge_serial->num_ports_open;
2038         if (edge_port->edge_serial->num_ports_open <= 0) {
2039                 /* last port is now closed, let's shut down our interrupt urb */
2040                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2041                 edge_port->edge_serial->num_ports_open = 0;
2042         }
2043         mutex_unlock(&edge_serial->es_lock);
2044         edge_port->close_pending = 0;
2045
2046         dbg("%s - exited", __func__);
2047 }
2048
2049 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2050                                 const unsigned char *data, int count)
2051 {
2052         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2053
2054         dbg("%s - port %d", __func__, port->number);
2055
2056         if (count == 0) {
2057                 dbg("%s - write request of 0 bytes", __func__);
2058                 return 0;
2059         }
2060
2061         if (edge_port == NULL)
2062                 return -ENODEV;
2063         if (edge_port->close_pending == 1)
2064                 return -ENODEV;
2065
2066         count = kfifo_in_locked(&edge_port->write_fifo, data, count,
2067                                                         &edge_port->ep_lock);
2068         edge_send(tty);
2069
2070         return count;
2071 }
2072
2073 static void edge_send(struct tty_struct *tty)
2074 {
2075         struct usb_serial_port *port = tty->driver_data;
2076         int count, result;
2077         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2078         unsigned long flags;
2079
2080
2081         dbg("%s - port %d", __func__, port->number);
2082
2083         spin_lock_irqsave(&edge_port->ep_lock, flags);
2084
2085         if (edge_port->ep_write_urb_in_use) {
2086                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2087                 return;
2088         }
2089
2090         count = kfifo_out(&edge_port->write_fifo,
2091                                 port->write_urb->transfer_buffer,
2092                                 port->bulk_out_size);
2093
2094         if (count == 0) {
2095                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2096                 return;
2097         }
2098
2099         edge_port->ep_write_urb_in_use = 1;
2100
2101         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2102
2103         usb_serial_debug_data(debug, &port->dev, __func__, count,
2104                                 port->write_urb->transfer_buffer);
2105
2106         /* set up our urb */
2107         port->write_urb->transfer_buffer_length = count;
2108
2109         /* send the data out the bulk port */
2110         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2111         if (result) {
2112                 dev_err_console(port,
2113                         "%s - failed submitting write urb, error %d\n",
2114                                 __func__, result);
2115                 edge_port->ep_write_urb_in_use = 0;
2116                 /* TODO: reschedule edge_send */
2117         } else
2118                 edge_port->icount.tx += count;
2119
2120         /* wakeup any process waiting for writes to complete */
2121         /* there is now more room in the buffer for new writes */
2122         if (tty)
2123                 tty_wakeup(tty);
2124 }
2125
2126 static int edge_write_room(struct tty_struct *tty)
2127 {
2128         struct usb_serial_port *port = tty->driver_data;
2129         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2130         int room = 0;
2131         unsigned long flags;
2132
2133         dbg("%s - port %d", __func__, port->number);
2134
2135         if (edge_port == NULL)
2136                 return 0;
2137         if (edge_port->close_pending == 1)
2138                 return 0;
2139
2140         spin_lock_irqsave(&edge_port->ep_lock, flags);
2141         room = kfifo_avail(&edge_port->write_fifo);
2142         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2143
2144         dbg("%s - returns %d", __func__, room);
2145         return room;
2146 }
2147
2148 static int edge_chars_in_buffer(struct tty_struct *tty)
2149 {
2150         struct usb_serial_port *port = tty->driver_data;
2151         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2152         int chars = 0;
2153         unsigned long flags;
2154
2155         dbg("%s - port %d", __func__, port->number);
2156
2157         if (edge_port == NULL)
2158                 return 0;
2159         if (edge_port->close_pending == 1)
2160                 return 0;
2161
2162         spin_lock_irqsave(&edge_port->ep_lock, flags);
2163         chars = kfifo_len(&edge_port->write_fifo);
2164         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2165
2166         dbg("%s - returns %d", __func__, chars);
2167         return chars;
2168 }
2169
2170 static void edge_throttle(struct tty_struct *tty)
2171 {
2172         struct usb_serial_port *port = tty->driver_data;
2173         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2174         int status;
2175
2176         dbg("%s - port %d", __func__, port->number);
2177
2178         if (edge_port == NULL)
2179                 return;
2180
2181         /* if we are implementing XON/XOFF, send the stop character */
2182         if (I_IXOFF(tty)) {
2183                 unsigned char stop_char = STOP_CHAR(tty);
2184                 status = edge_write(tty, port, &stop_char, 1);
2185                 if (status <= 0) {
2186                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2187                 }
2188         }
2189
2190         /* if we are implementing RTS/CTS, stop reads */
2191         /* and the Edgeport will clear the RTS line */
2192         if (C_CRTSCTS(tty))
2193                 stop_read(edge_port);
2194
2195 }
2196
2197 static void edge_unthrottle(struct tty_struct *tty)
2198 {
2199         struct usb_serial_port *port = tty->driver_data;
2200         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2201         int status;
2202
2203         dbg("%s - port %d", __func__, port->number);
2204
2205         if (edge_port == NULL)
2206                 return;
2207
2208         /* if we are implementing XON/XOFF, send the start character */
2209         if (I_IXOFF(tty)) {
2210                 unsigned char start_char = START_CHAR(tty);
2211                 status = edge_write(tty, port, &start_char, 1);
2212                 if (status <= 0) {
2213                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2214                 }
2215         }
2216         /* if we are implementing RTS/CTS, restart reads */
2217         /* are the Edgeport will assert the RTS line */
2218         if (C_CRTSCTS(tty)) {
2219                 status = restart_read(edge_port);
2220                 if (status)
2221                         dev_err(&port->dev,
2222                                 "%s - read bulk usb_submit_urb failed: %d\n",
2223                                                         __func__, status);
2224         }
2225
2226 }
2227
2228 static void stop_read(struct edgeport_port *edge_port)
2229 {
2230         unsigned long flags;
2231
2232         spin_lock_irqsave(&edge_port->ep_lock, flags);
2233
2234         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2235                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2236         edge_port->shadow_mcr &= ~MCR_RTS;
2237
2238         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2239 }
2240
2241 static int restart_read(struct edgeport_port *edge_port)
2242 {
2243         struct urb *urb;
2244         int status = 0;
2245         unsigned long flags;
2246
2247         spin_lock_irqsave(&edge_port->ep_lock, flags);
2248
2249         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2250                 urb = edge_port->port->read_urb;
2251                 status = usb_submit_urb(urb, GFP_ATOMIC);
2252         }
2253         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2254         edge_port->shadow_mcr |= MCR_RTS;
2255
2256         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2257
2258         return status;
2259 }
2260
2261 static void change_port_settings(struct tty_struct *tty,
2262                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2263 {
2264         struct ump_uart_config *config;
2265         int baud;
2266         unsigned cflag;
2267         int status;
2268         int port_number = edge_port->port->number -
2269                                         edge_port->port->serial->minor;
2270
2271         dbg("%s - port %d", __func__, edge_port->port->number);
2272
2273         config = kmalloc (sizeof (*config), GFP_KERNEL);
2274         if (!config) {
2275                 *tty->termios = *old_termios;
2276                 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2277                                                                 __func__);
2278                 return;
2279         }
2280
2281         cflag = tty->termios->c_cflag;
2282
2283         config->wFlags = 0;
2284
2285         /* These flags must be set */
2286         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2287         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2288         config->bUartMode = (__u8)(edge_port->bUartMode);
2289
2290         switch (cflag & CSIZE) {
2291         case CS5:
2292                     config->bDataBits = UMP_UART_CHAR5BITS;
2293                     dbg("%s - data bits = 5", __func__);
2294                     break;
2295         case CS6:
2296                     config->bDataBits = UMP_UART_CHAR6BITS;
2297                     dbg("%s - data bits = 6", __func__);
2298                     break;
2299         case CS7:
2300                     config->bDataBits = UMP_UART_CHAR7BITS;
2301                     dbg("%s - data bits = 7", __func__);
2302                     break;
2303         default:
2304         case CS8:
2305                     config->bDataBits = UMP_UART_CHAR8BITS;
2306                     dbg("%s - data bits = 8", __func__);
2307                             break;
2308         }
2309
2310         if (cflag & PARENB) {
2311                 if (cflag & PARODD) {
2312                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2313                         config->bParity = UMP_UART_ODDPARITY;
2314                         dbg("%s - parity = odd", __func__);
2315                 } else {
2316                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2317                         config->bParity = UMP_UART_EVENPARITY;
2318                         dbg("%s - parity = even", __func__);
2319                 }
2320         } else {
2321                 config->bParity = UMP_UART_NOPARITY;
2322                 dbg("%s - parity = none", __func__);
2323         }
2324
2325         if (cflag & CSTOPB) {
2326                 config->bStopBits = UMP_UART_STOPBIT2;
2327                 dbg("%s - stop bits = 2", __func__);
2328         } else {
2329                 config->bStopBits = UMP_UART_STOPBIT1;
2330                 dbg("%s - stop bits = 1", __func__);
2331         }
2332
2333         /* figure out the flow control settings */
2334         if (cflag & CRTSCTS) {
2335                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2336                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2337                 dbg("%s - RTS/CTS is enabled", __func__);
2338         } else {
2339                 dbg("%s - RTS/CTS is disabled", __func__);
2340                 tty->hw_stopped = 0;
2341                 restart_read(edge_port);
2342         }
2343
2344         /* if we are implementing XON/XOFF, set the start and stop
2345            character in the device */
2346         config->cXon  = START_CHAR(tty);
2347         config->cXoff = STOP_CHAR(tty);
2348
2349         /* if we are implementing INBOUND XON/XOFF */
2350         if (I_IXOFF(tty)) {
2351                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2352                 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2353                      __func__, config->cXon, config->cXoff);
2354         } else
2355                 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2356
2357         /* if we are implementing OUTBOUND XON/XOFF */
2358         if (I_IXON(tty)) {
2359                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2360                 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2361                      __func__, config->cXon, config->cXoff);
2362         } else
2363                 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2364
2365         tty->termios->c_cflag &= ~CMSPAR;
2366
2367         /* Round the baud rate */
2368         baud = tty_get_baud_rate(tty);
2369         if (!baud) {
2370                 /* pick a default, any default... */
2371                 baud = 9600;
2372         } else
2373                 tty_encode_baud_rate(tty, baud, baud);
2374
2375         edge_port->baud_rate = baud;
2376         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2377
2378         /* FIXME: Recompute actual baud from divisor here */
2379
2380         dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2381                                                         config->wBaudRate);
2382
2383         dbg("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2384         dbg("wFlags:    0x%x", config->wFlags);
2385         dbg("bDataBits:   %d", config->bDataBits);
2386         dbg("bParity:     %d", config->bParity);
2387         dbg("bStopBits:   %d", config->bStopBits);
2388         dbg("cXon:        %d", config->cXon);
2389         dbg("cXoff:       %d", config->cXoff);
2390         dbg("bUartMode:   %d", config->bUartMode);
2391
2392         /* move the word values into big endian mode */
2393         cpu_to_be16s(&config->wFlags);
2394         cpu_to_be16s(&config->wBaudRate);
2395
2396         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2397                                 (__u8)(UMPM_UART1_PORT + port_number),
2398                                 0, (__u8 *)config, sizeof(*config));
2399         if (status)
2400                 dbg("%s - error %d when trying to write config to device",
2401                      __func__, status);
2402         kfree(config);
2403 }
2404
2405 static void edge_set_termios(struct tty_struct *tty,
2406                 struct usb_serial_port *port, struct ktermios *old_termios)
2407 {
2408         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2409         unsigned int cflag;
2410
2411         cflag = tty->termios->c_cflag;
2412
2413         dbg("%s - clfag %08x iflag %08x", __func__,
2414             tty->termios->c_cflag, tty->termios->c_iflag);
2415         dbg("%s - old clfag %08x old iflag %08x", __func__,
2416             old_termios->c_cflag, old_termios->c_iflag);
2417         dbg("%s - port %d", __func__, port->number);
2418
2419         if (edge_port == NULL)
2420                 return;
2421         /* change the port settings to the new ones specified */
2422         change_port_settings(tty, edge_port, old_termios);
2423 }
2424
2425 static int edge_tiocmset(struct tty_struct *tty,
2426                                         unsigned int set, unsigned int clear)
2427 {
2428         struct usb_serial_port *port = tty->driver_data;
2429         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2430         unsigned int mcr;
2431         unsigned long flags;
2432
2433         dbg("%s - port %d", __func__, port->number);
2434
2435         spin_lock_irqsave(&edge_port->ep_lock, flags);
2436         mcr = edge_port->shadow_mcr;
2437         if (set & TIOCM_RTS)
2438                 mcr |= MCR_RTS;
2439         if (set & TIOCM_DTR)
2440                 mcr |= MCR_DTR;
2441         if (set & TIOCM_LOOP)
2442                 mcr |= MCR_LOOPBACK;
2443
2444         if (clear & TIOCM_RTS)
2445                 mcr &= ~MCR_RTS;
2446         if (clear & TIOCM_DTR)
2447                 mcr &= ~MCR_DTR;
2448         if (clear & TIOCM_LOOP)
2449                 mcr &= ~MCR_LOOPBACK;
2450
2451         edge_port->shadow_mcr = mcr;
2452         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2453
2454         restore_mcr(edge_port, mcr);
2455         return 0;
2456 }
2457
2458 static int edge_tiocmget(struct tty_struct *tty)
2459 {
2460         struct usb_serial_port *port = tty->driver_data;
2461         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2462         unsigned int result = 0;
2463         unsigned int msr;
2464         unsigned int mcr;
2465         unsigned long flags;
2466
2467         dbg("%s - port %d", __func__, port->number);
2468
2469         spin_lock_irqsave(&edge_port->ep_lock, flags);
2470
2471         msr = edge_port->shadow_msr;
2472         mcr = edge_port->shadow_mcr;
2473         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2474                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2475                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2476                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2477                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2478                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2479
2480
2481         dbg("%s -- %x", __func__, result);
2482         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2483
2484         return result;
2485 }
2486
2487 static int edge_get_icount(struct tty_struct *tty,
2488                                 struct serial_icounter_struct *icount)
2489 {
2490         struct usb_serial_port *port = tty->driver_data;
2491         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2492         struct async_icount *ic = &edge_port->icount;
2493
2494         icount->cts = ic->cts;
2495         icount->dsr = ic->dsr;
2496         icount->rng = ic->rng;
2497         icount->dcd = ic->dcd;
2498         icount->tx = ic->tx;
2499         icount->rx = ic->rx;
2500         icount->frame = ic->frame;
2501         icount->parity = ic->parity;
2502         icount->overrun = ic->overrun;
2503         icount->brk = ic->brk;
2504         icount->buf_overrun = ic->buf_overrun;
2505         return 0;
2506 }
2507
2508 static int get_serial_info(struct edgeport_port *edge_port,
2509                                 struct serial_struct __user *retinfo)
2510 {
2511         struct serial_struct tmp;
2512
2513         if (!retinfo)
2514                 return -EFAULT;
2515
2516         memset(&tmp, 0, sizeof(tmp));
2517
2518         tmp.type                = PORT_16550A;
2519         tmp.line                = edge_port->port->serial->minor;
2520         tmp.port                = edge_port->port->number;
2521         tmp.irq                 = 0;
2522         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2523         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2524         tmp.baud_base           = 9600;
2525         tmp.close_delay         = 5*HZ;
2526         tmp.closing_wait        = closing_wait;
2527
2528         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2529                 return -EFAULT;
2530         return 0;
2531 }
2532
2533 static int edge_ioctl(struct tty_struct *tty,
2534                                         unsigned int cmd, unsigned long arg)
2535 {
2536         struct usb_serial_port *port = tty->driver_data;
2537         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2538         struct async_icount cnow;
2539         struct async_icount cprev;
2540
2541         dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2542
2543         switch (cmd) {
2544         case TIOCGSERIAL:
2545                 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2546                 return get_serial_info(edge_port,
2547                                 (struct serial_struct __user *) arg);
2548         case TIOCMIWAIT:
2549                 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2550                 cprev = edge_port->icount;
2551                 while (1) {
2552                         interruptible_sleep_on(&edge_port->delta_msr_wait);
2553                         /* see if a signal did it */
2554                         if (signal_pending(current))
2555                                 return -ERESTARTSYS;
2556                         cnow = edge_port->icount;
2557                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2558                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2559                                 return -EIO; /* no change => error */
2560                         if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2561                             ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2562                             ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2563                             ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2564                                 return 0;
2565                         }
2566                         cprev = cnow;
2567                 }
2568                 /* not reached */
2569                 break;
2570         }
2571         return -ENOIOCTLCMD;
2572 }
2573
2574 static void edge_break(struct tty_struct *tty, int break_state)
2575 {
2576         struct usb_serial_port *port = tty->driver_data;
2577         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2578         int status;
2579         int bv = 0;     /* Off */
2580
2581         dbg("%s - state = %d", __func__, break_state);
2582
2583         /* chase the port close */
2584         chase_port(edge_port, 0, 0);
2585
2586         if (break_state == -1)
2587                 bv = 1; /* On */
2588         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2589         if (status)
2590                 dbg("%s - error %d sending break set/clear command.",
2591                      __func__, status);
2592 }
2593
2594 static int edge_startup(struct usb_serial *serial)
2595 {
2596         struct edgeport_serial *edge_serial;
2597         struct edgeport_port *edge_port;
2598         struct usb_device *dev;
2599         int status;
2600         int i;
2601
2602         dev = serial->dev;
2603
2604         /* create our private serial structure */
2605         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2606         if (edge_serial == NULL) {
2607                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2608                 return -ENOMEM;
2609         }
2610         mutex_init(&edge_serial->es_lock);
2611         edge_serial->serial = serial;
2612         usb_set_serial_data(serial, edge_serial);
2613
2614         status = download_fw(edge_serial);
2615         if (status) {
2616                 kfree(edge_serial);
2617                 return status;
2618         }
2619
2620         /* set up our port private structures */
2621         for (i = 0; i < serial->num_ports; ++i) {
2622                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2623                 if (edge_port == NULL) {
2624                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2625                                                                 __func__);
2626                         goto cleanup;
2627                 }
2628                 spin_lock_init(&edge_port->ep_lock);
2629                 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,
2630                                                                 GFP_KERNEL)) {
2631                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2632                                                                 __func__);
2633                         kfree(edge_port);
2634                         goto cleanup;
2635                 }
2636                 edge_port->port = serial->port[i];
2637                 edge_port->edge_serial = edge_serial;
2638                 usb_set_serial_port_data(serial->port[i], edge_port);
2639                 edge_port->bUartMode = default_uart_mode;
2640         }
2641
2642         return 0;
2643
2644 cleanup:
2645         for (--i; i >= 0; --i) {
2646                 edge_port = usb_get_serial_port_data(serial->port[i]);
2647                 kfifo_free(&edge_port->write_fifo);
2648                 kfree(edge_port);
2649                 usb_set_serial_port_data(serial->port[i], NULL);
2650         }
2651         kfree(edge_serial);
2652         usb_set_serial_data(serial, NULL);
2653         return -ENOMEM;
2654 }
2655
2656 static void edge_disconnect(struct usb_serial *serial)
2657 {
2658         dbg("%s", __func__);
2659 }
2660
2661 static void edge_release(struct usb_serial *serial)
2662 {
2663         int i;
2664         struct edgeport_port *edge_port;
2665
2666         dbg("%s", __func__);
2667
2668         for (i = 0; i < serial->num_ports; ++i) {
2669                 edge_port = usb_get_serial_port_data(serial->port[i]);
2670                 kfifo_free(&edge_port->write_fifo);
2671                 kfree(edge_port);
2672         }
2673         kfree(usb_get_serial_data(serial));
2674 }
2675
2676
2677 /* Sysfs Attributes */
2678
2679 static ssize_t show_uart_mode(struct device *dev,
2680         struct device_attribute *attr, char *buf)
2681 {
2682         struct usb_serial_port *port = to_usb_serial_port(dev);
2683         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2684
2685         return sprintf(buf, "%d\n", edge_port->bUartMode);
2686 }
2687
2688 static ssize_t store_uart_mode(struct device *dev,
2689         struct device_attribute *attr, const char *valbuf, size_t count)
2690 {
2691         struct usb_serial_port *port = to_usb_serial_port(dev);
2692         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2693         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2694
2695         dbg("%s: setting uart_mode = %d", __func__, v);
2696
2697         if (v < 256)
2698                 edge_port->bUartMode = v;
2699         else
2700                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2701
2702         return count;
2703 }
2704
2705 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2706                                                         store_uart_mode);
2707
2708 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2709 {
2710         return device_create_file(&port->dev, &dev_attr_uart_mode);
2711 }
2712
2713 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2714 {
2715         device_remove_file(&port->dev, &dev_attr_uart_mode);
2716         return 0;
2717 }
2718
2719
2720 static struct usb_serial_driver edgeport_1port_device = {
2721         .driver = {
2722                 .owner          = THIS_MODULE,
2723                 .name           = "edgeport_ti_1",
2724         },
2725         .description            = "Edgeport TI 1 port adapter",
2726         .id_table               = edgeport_1port_id_table,
2727         .num_ports              = 1,
2728         .open                   = edge_open,
2729         .close                  = edge_close,
2730         .throttle               = edge_throttle,
2731         .unthrottle             = edge_unthrottle,
2732         .attach                 = edge_startup,
2733         .disconnect             = edge_disconnect,
2734         .release                = edge_release,
2735         .port_probe             = edge_create_sysfs_attrs,
2736         .port_remove            = edge_remove_sysfs_attrs,
2737         .ioctl                  = edge_ioctl,
2738         .set_termios            = edge_set_termios,
2739         .tiocmget               = edge_tiocmget,
2740         .tiocmset               = edge_tiocmset,
2741         .get_icount             = edge_get_icount,
2742         .write                  = edge_write,
2743         .write_room             = edge_write_room,
2744         .chars_in_buffer        = edge_chars_in_buffer,
2745         .break_ctl              = edge_break,
2746         .read_int_callback      = edge_interrupt_callback,
2747         .read_bulk_callback     = edge_bulk_in_callback,
2748         .write_bulk_callback    = edge_bulk_out_callback,
2749 };
2750
2751 static struct usb_serial_driver edgeport_2port_device = {
2752         .driver = {
2753                 .owner          = THIS_MODULE,
2754                 .name           = "edgeport_ti_2",
2755         },
2756         .description            = "Edgeport TI 2 port adapter",
2757         .id_table               = edgeport_2port_id_table,
2758         .num_ports              = 2,
2759         .open                   = edge_open,
2760         .close                  = edge_close,
2761         .throttle               = edge_throttle,
2762         .unthrottle             = edge_unthrottle,
2763         .attach                 = edge_startup,
2764         .disconnect             = edge_disconnect,
2765         .release                = edge_release,
2766         .port_probe             = edge_create_sysfs_attrs,
2767         .port_remove            = edge_remove_sysfs_attrs,
2768         .ioctl                  = edge_ioctl,
2769         .set_termios            = edge_set_termios,
2770         .tiocmget               = edge_tiocmget,
2771         .tiocmset               = edge_tiocmset,
2772         .write                  = edge_write,
2773         .write_room             = edge_write_room,
2774         .chars_in_buffer        = edge_chars_in_buffer,
2775         .break_ctl              = edge_break,
2776         .read_int_callback      = edge_interrupt_callback,
2777         .read_bulk_callback     = edge_bulk_in_callback,
2778         .write_bulk_callback    = edge_bulk_out_callback,
2779 };
2780
2781 static struct usb_serial_driver * const serial_drivers[] = {
2782         &edgeport_1port_device, &edgeport_2port_device, NULL
2783 };
2784
2785 module_usb_serial_driver(serial_drivers, id_table_combined);
2786
2787 MODULE_AUTHOR(DRIVER_AUTHOR);
2788 MODULE_DESCRIPTION(DRIVER_DESC);
2789 MODULE_LICENSE("GPL");
2790 MODULE_FIRMWARE("edgeport/down3.bin");
2791
2792 module_param(debug, bool, S_IRUGO | S_IWUSR);
2793 MODULE_PARM_DESC(debug, "Debug enabled or not");
2794
2795 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2796 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2797
2798 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2799 MODULE_PARM_DESC(ignore_cpu_rev,
2800                         "Ignore the cpu revision when connecting to a device");
2801
2802 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2803 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");