drivers/usb/serial/io_ti.c

   1 /*
   2  * Edgeport USB Serial Converter driver
   3  *
   4  * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  *
   7  *      This program is free software; you can redistribute it and/or modify
   8  *      it under the terms of the GNU General Public License as published by
   9  *      the Free Software Foundation; either version 2 of the License, or
  10  *      (at your option) any later version.
  11  *
  12  * Supports the following devices:
  13  *      EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
  14  *
  15  * For questions or problems with this driver, contact Inside Out
  16  * Networks technical support, or Peter Berger <pberger@brimson.com>,
  17  * or Al Borchers <alborchers@steinerpoint.com>.
  18  *
  19  * Version history:
  20  *
  21  *      July 11, 2002   Removed 4 port device structure since all TI UMP
  22  *                      chips have only 2 ports
  23  *                      David Iacovelli (davidi@ionetworks.com)
  24  *
  25  */
  26
  27 #include <linux/kernel.h>
  28 #include <linux/jiffies.h>
  29 #include <linux/errno.h>
  30 #include <linux/init.h>
  31 #include <linux/slab.h>
  32 #include <linux/tty.h>
  33 #include <linux/tty_driver.h>
  34 #include <linux/tty_flip.h>
  35 #include <linux/module.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/mutex.h>
  38 #include <linux/serial.h>
  39 #include <linux/ioctl.h>
  40 #include <linux/firmware.h>
  41 #include <linux/uaccess.h>
  42 #include <linux/usb.h>
  43 #include <linux/usb/serial.h>
  44
  45 #include "io_16654.h"
  46 #include "io_usbvend.h"
  47 #include "io_ti.h"
  48
  49 /*
  50  * Version Information
  51  */
  52 #define DRIVER_VERSION "v0.7mode043006"
  53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  54 #define DRIVER_DESC "Edgeport USB Serial Driver"
  55
  56 #define EPROM_PAGE_SIZE         64
  57
  58
  59 struct edgeport_uart_buf_desc {
  60         __u32 count;            /* Number of bytes currently in buffer */
  61 };
  62
  63 /* different hardware types */
  64 #define HARDWARE_TYPE_930       0
  65 #define HARDWARE_TYPE_TIUMP     1
  66
  67 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
  68 #define TI_MODE_CONFIGURING     0   /* Device has not entered start device */
  69 #define TI_MODE_BOOT            1   /* Staying in boot mode                */
  70 #define TI_MODE_DOWNLOAD        2   /* Made it to download mode            */
  71 #define TI_MODE_TRANSITIONING   3   /* Currently in boot mode but
  72                                        transitioning to download mode      */
  73
  74 /* read urb state */
  75 #define EDGE_READ_URB_RUNNING   0
  76 #define EDGE_READ_URB_STOPPING  1
  77 #define EDGE_READ_URB_STOPPED   2
  78
  79 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
  80
  81 #define EDGE_OUT_BUF_SIZE       1024
  82
  83
  84 /* Product information read from the Edgeport */
  85 struct product_info {
  86         int     TiMode;                 /* Current TI Mode  */
  87         __u8    hardware_type;          /* Type of hardware */
  88 } __attribute__((packed));
  89
  90 /* circular buffer */
  91 struct edge_buf {
  92         unsigned int    buf_size;
  93         char            *buf_buf;
  94         char            *buf_get;
  95         char            *buf_put;
  96 };
  97
  98 struct edgeport_port {
  99         __u16 uart_base;
 100         __u16 dma_address;
 101         __u8 shadow_msr;
 102         __u8 shadow_mcr;
 103         __u8 shadow_lsr;
 104         __u8 lsr_mask;
 105         __u32 ump_read_timeout;         /* Number of milliseconds the UMP will
 106                                            wait without data before completing
 107                                            a read short */
 108         int baud_rate;
 109         int close_pending;
 110         int lsr_event;
 111         struct edgeport_uart_buf_desc tx;
 112         struct async_icount     icount;
 113         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
 114                                                    waiting for msr change to
 115                                                    happen */
 116         struct edgeport_serial  *edge_serial;
 117         struct usb_serial_port  *port;
 118         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
 119         spinlock_t ep_lock;
 120         int ep_read_urb_state;
 121         int ep_write_urb_in_use;
 122         struct edge_buf *ep_out_buf;
 123 };
 124
 125 struct edgeport_serial {
 126         struct product_info product_info;
 127         u8 TI_I2C_Type;                 /* Type of I2C in UMP */
 128         u8 TiReadI2C;                   /* Set to TRUE if we have read the
 129                                            I2c in Boot Mode */
 130         struct mutex es_lock;
 131         int num_ports_open;
 132         struct usb_serial *serial;
 133 };
 134
 135
 136 /* Devices that this driver supports */
 137 static const struct usb_device_id edgeport_1port_id_table[] = {
 138         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 141         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 142         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 143         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 151         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 154         { }
 155 };
 156
 157 static const struct usb_device_id edgeport_2port_id_table[] = {
 158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 160         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 161         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 162         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 163         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 170         /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
 171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 176         { }
 177 };
 178
 179 /* Devices that this driver supports */
 180 static const struct usb_device_id id_table_combined[] = {
 181         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 182         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 183         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 184         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 185         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 186         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 187         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 188         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 189         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 190         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 191         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 192         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 193         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 194         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 195         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 196         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 197         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 198         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 199         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 200         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 201         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 202         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 203         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 204         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 205         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 206         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 207         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 208         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 209         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 210         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 211         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 212         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 213         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 214         { }
 215 };
 216
 217 MODULE_DEVICE_TABLE(usb, id_table_combined);
 218
 219 static struct usb_driver io_driver = {
 220         .name =         "io_ti",
 221         .probe =        usb_serial_probe,
 222         .disconnect =   usb_serial_disconnect,
 223         .id_table =     id_table_combined,
 224         .no_dynamic_id =        1,
 225 };
 226
 227
 228 static unsigned char OperationalMajorVersion;
 229 static unsigned char OperationalMinorVersion;
 230 static unsigned short OperationalBuildNumber;
 231
 232 static int debug;
 233
 234 static int closing_wait = EDGE_CLOSING_WAIT;
 235 static int ignore_cpu_rev;
 236 static int default_uart_mode;           /* RS232 */
 237
 238 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
 239                           unsigned char *data, int length);
 240
 241 static void stop_read(struct edgeport_port *edge_port);
 242 static int restart_read(struct edgeport_port *edge_port);
 243
 244 static void edge_set_termios(struct tty_struct *tty,
 245                 struct usb_serial_port *port, struct ktermios *old_termios);
 246 static void edge_send(struct tty_struct *tty);
 247
 248 /* sysfs attributes */
 249 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
 250 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
 251
 252 /* circular buffer */
 253 static struct edge_buf *edge_buf_alloc(unsigned int size);
 254 static void edge_buf_free(struct edge_buf *eb);
 255 static void edge_buf_clear(struct edge_buf *eb);
 256 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
 257 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
 258 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
 259         unsigned int count);
 260 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
 261         unsigned int count);
 262
 263
 264 static int ti_vread_sync(struct usb_device *dev, __u8 request,
 265                                 __u16 value, __u16 index, u8 *data, int size)
 266 {
 267         int status;
 268
 269         status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
 270                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
 271                         value, index, data, size, 1000);
 272         if (status < 0)
 273                 return status;
 274         if (status != size) {
 275                 dbg("%s - wanted to write %d, but only wrote %d",
 276                                              __func__, size, status);
 277                 return -ECOMM;
 278         }
 279         return 0;
 280 }
 281
 282 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
 283                                 __u16 value, __u16 index, u8 *data, int size)
 284 {
 285         int status;
 286
 287         status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
 288                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
 289                         value, index, data, size, 1000);
 290         if (status < 0)
 291                 return status;
 292         if (status != size) {
 293                 dbg("%s - wanted to write %d, but only wrote %d",
 294                      __func__, size, status);
 295                 return -ECOMM;
 296         }
 297         return 0;
 298 }
 299
 300 static int send_cmd(struct usb_device *dev, __u8 command,
 301                                 __u8 moduleid, __u16 value, u8 *data,
 302                                 int size)
 303 {
 304         return ti_vsend_sync(dev, command, value, moduleid, data, size);
 305 }
 306
 307 /* clear tx/rx buffers and fifo in TI UMP */
 308 static int purge_port(struct usb_serial_port *port, __u16 mask)
 309 {
 310         int port_number = port->number - port->serial->minor;
 311
 312         dbg("%s - port %d, mask %x", __func__, port_number, mask);
 313
 314         return send_cmd(port->serial->dev,
 315                                         UMPC_PURGE_PORT,
 316                                         (__u8)(UMPM_UART1_PORT + port_number),
 317                                         mask,
 318                                         NULL,
 319                                         0);
 320 }
 321
 322 /**
 323  * read_download_mem - Read edgeport memory from TI chip
 324  * @dev: usb device pointer
 325  * @start_address: Device CPU address at which to read
 326  * @length: Length of above data
 327  * @address_type: Can read both XDATA and I2C
 328  * @buffer: pointer to input data buffer
 329  */
 330 static int read_download_mem(struct usb_device *dev, int start_address,
 331                                 int length, __u8 address_type, __u8 *buffer)
 332 {
 333         int status = 0;
 334         __u8 read_length;
 335         __be16 be_start_address;
 336
 337         dbg("%s - @ %x for %d", __func__, start_address, length);
 338
 339         /* Read in blocks of 64 bytes
 340          * (TI firmware can't handle more than 64 byte reads)
 341          */
 342         while (length) {
 343                 if (length > 64)
 344                         read_length = 64;
 345                 else
 346                         read_length = (__u8)length;
 347
 348                 if (read_length > 1) {
 349                         dbg("%s - @ %x for %d", __func__,
 350                              start_address, read_length);
 351                 }
 352                 be_start_address = cpu_to_be16(start_address);
 353                 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
 354                                         (__u16)address_type,
 355                                         (__force __u16)be_start_address,
 356                                         buffer, read_length);
 357
 358                 if (status) {
 359                         dbg("%s - ERROR %x", __func__, status);
 360                         return status;
 361                 }
 362
 363                 if (read_length > 1)
 364                         usb_serial_debug_data(debug, &dev->dev, __func__,
 365                                               read_length, buffer);
 366
 367                 /* Update pointers/length */
 368                 start_address += read_length;
 369                 buffer += read_length;
 370                 length -= read_length;
 371         }
 372
 373         return status;
 374 }
 375
 376 static int read_ram(struct usb_device *dev, int start_address,
 377                                                 int length, __u8 *buffer)
 378 {
 379         return read_download_mem(dev, start_address, length,
 380                                         DTK_ADDR_SPACE_XDATA, buffer);
 381 }
 382
 383 /* Read edgeport memory to a given block */
 384 static int read_boot_mem(struct edgeport_serial *serial,
 385                                 int start_address, int length, __u8 *buffer)
 386 {
 387         int status = 0;
 388         int i;
 389
 390         for (i = 0; i < length; i++) {
 391                 status = ti_vread_sync(serial->serial->dev,
 392                                 UMPC_MEMORY_READ, serial->TI_I2C_Type,
 393                                 (__u16)(start_address+i), &buffer[i], 0x01);
 394                 if (status) {
 395                         dbg("%s - ERROR %x", __func__, status);
 396                         return status;
 397                 }
 398         }
 399
 400         dbg("%s - start_address = %x, length = %d",
 401                                         __func__, start_address, length);
 402         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 403                                         __func__, length, buffer);
 404
 405         serial->TiReadI2C = 1;
 406
 407         return status;
 408 }
 409
 410 /* Write given block to TI EPROM memory */
 411 static int write_boot_mem(struct edgeport_serial *serial,
 412                                 int start_address, int length, __u8 *buffer)
 413 {
 414         int status = 0;
 415         int i;
 416         u8 *temp;
 417
 418         /* Must do a read before write */
 419         if (!serial->TiReadI2C) {
 420                 temp = kmalloc(1, GFP_KERNEL);
 421                 if (!temp) {
 422                         dev_err(&serial->serial->dev->dev,
 423                                         "%s - out of memory\n", __func__);
 424                         return -ENOMEM;
 425                 }
 426                 status = read_boot_mem(serial, 0, 1, temp);
 427                 kfree(temp);
 428                 if (status)
 429                         return status;
 430         }
 431
 432         for (i = 0; i < length; ++i) {
 433                 status = ti_vsend_sync(serial->serial->dev,
 434                                 UMPC_MEMORY_WRITE, buffer[i],
 435                                 (__u16)(i + start_address), NULL, 0);
 436                 if (status)
 437                         return status;
 438         }
 439
 440         dbg("%s - start_sddr = %x, length = %d",
 441                                         __func__, start_address, length);
 442         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 443                                         __func__, length, buffer);
 444
 445         return status;
 446 }
 447
 448
 449 /* Write edgeport I2C memory to TI chip */
 450 static int write_i2c_mem(struct edgeport_serial *serial,
 451                 int start_address, int length, __u8 address_type, __u8 *buffer)
 452 {
 453         int status = 0;
 454         int write_length;
 455         __be16 be_start_address;
 456
 457         /* We can only send a maximum of 1 aligned byte page at a time */
 458
 459         /* calulate the number of bytes left in the first page */
 460         write_length = EPROM_PAGE_SIZE -
 461                                 (start_address & (EPROM_PAGE_SIZE - 1));
 462
 463         if (write_length > length)
 464                 write_length = length;
 465
 466         dbg("%s - BytesInFirstPage Addr = %x, length = %d",
 467                                         __func__, start_address, write_length);
 468         usb_serial_debug_data(debug, &serial->serial->dev->dev,
 469                                                 __func__, write_length, buffer);
 470
 471         /* Write first page */
 472         be_start_address = cpu_to_be16(start_address);
 473         status = ti_vsend_sync(serial->serial->dev,
 474                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 475                                 (__force __u16)be_start_address,
 476                                 buffer, write_length);
 477         if (status) {
 478                 dbg("%s - ERROR %d", __func__, status);
 479                 return status;
 480         }
 481
 482         length          -= write_length;
 483         start_address   += write_length;
 484         buffer          += write_length;
 485
 486         /* We should be aligned now -- can write
 487            max page size bytes at a time */
 488         while (length) {
 489                 if (length > EPROM_PAGE_SIZE)
 490                         write_length = EPROM_PAGE_SIZE;
 491                 else
 492                         write_length = length;
 493
 494                 dbg("%s - Page Write Addr = %x, length = %d",
 495                                         __func__, start_address, write_length);
 496                 usb_serial_debug_data(debug, &serial->serial->dev->dev,
 497                                         __func__, write_length, buffer);
 498
 499                 /* Write next page */
 500                 be_start_address = cpu_to_be16(start_address);
 501                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 502                                 (__u16)address_type,
 503                                 (__force __u16)be_start_address,
 504                                 buffer, write_length);
 505                 if (status) {
 506                         dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n",
 507                                         __func__, status);
 508                         return status;
 509                 }
 510
 511                 length          -= write_length;
 512                 start_address   += write_length;
 513                 buffer          += write_length;
 514         }
 515         return status;
 516 }
 517
 518 /* Examine the UMP DMA registers and LSR
 519  *
 520  * Check the MSBit of the X and Y DMA byte count registers.
 521  * A zero in this bit indicates that the TX DMA buffers are empty
 522  * then check the TX Empty bit in the UART.
 523  */
 524 static int tx_active(struct edgeport_port *port)
 525 {
 526         int status;
 527         struct out_endpoint_desc_block *oedb;
 528         __u8 *lsr;
 529         int bytes_left = 0;
 530
 531         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 532         if (!oedb) {
 533                 dev_err(&port->port->dev, "%s - out of memory\n", __func__);
 534                 return -ENOMEM;
 535         }
 536
 537         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 538                                            as not all platforms can do DMA
 539                                            from stack */
 540         if (!lsr) {
 541                 kfree(oedb);
 542                 return -ENOMEM;
 543         }
 544         /* Read the DMA Count Registers */
 545         status = read_ram(port->port->serial->dev, port->dma_address,
 546                                                 sizeof(*oedb), (void *)oedb);
 547         if (status)
 548                 goto exit_is_tx_active;
 549
 550         dbg("%s - XByteCount    0x%X", __func__, oedb->XByteCount);
 551
 552         /* and the LSR */
 553         status = read_ram(port->port->serial->dev,
 554                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 555
 556         if (status)
 557                 goto exit_is_tx_active;
 558         dbg("%s - LSR = 0x%X", __func__, *lsr);
 559
 560         /* If either buffer has data or we are transmitting then return TRUE */
 561         if ((oedb->XByteCount & 0x80) != 0)
 562                 bytes_left += 64;
 563
 564         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 565                 bytes_left += 1;
 566
 567         /* We return Not Active if we get any kind of error */
 568 exit_is_tx_active:
 569         dbg("%s - return %d", __func__, bytes_left);
 570
 571         kfree(lsr);
 572         kfree(oedb);
 573         return bytes_left;
 574 }
 575
 576 static void chase_port(struct edgeport_port *port, unsigned long timeout,
 577                                                                 int flush)
 578 {
 579         int baud_rate;
 580         struct tty_struct *tty = tty_port_tty_get(&port->port->port);
 581         wait_queue_t wait;
 582         unsigned long flags;
 583
 584         if (!timeout)
 585                 timeout = (HZ * EDGE_CLOSING_WAIT)/100;
 586
 587         /* wait for data to drain from the buffer */
 588         spin_lock_irqsave(&port->ep_lock, flags);
 589         init_waitqueue_entry(&wait, current);
 590         add_wait_queue(&tty->write_wait, &wait);
 591         for (;;) {
 592                 set_current_state(TASK_INTERRUPTIBLE);
 593                 if (edge_buf_data_avail(port->ep_out_buf) == 0
 594                 || timeout == 0 || signal_pending(current)
 595                 || !usb_get_intfdata(port->port->serial->interface))
 596                         /* disconnect */
 597                         break;
 598                 spin_unlock_irqrestore(&port->ep_lock, flags);
 599                 timeout = schedule_timeout(timeout);
 600                 spin_lock_irqsave(&port->ep_lock, flags);
 601         }
 602         set_current_state(TASK_RUNNING);
 603         remove_wait_queue(&tty->write_wait, &wait);
 604         if (flush)
 605                 edge_buf_clear(port->ep_out_buf);
 606         spin_unlock_irqrestore(&port->ep_lock, flags);
 607         tty_kref_put(tty);
 608
 609         /* wait for data to drain from the device */
 610         timeout += jiffies;
 611         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
 612         && usb_get_intfdata(port->port->serial->interface)) {
 613                 /* not disconnected */
 614                 if (!tx_active(port))
 615                         break;
 616                 msleep(10);
 617         }
 618
 619         /* disconnected */
 620         if (!usb_get_intfdata(port->port->serial->interface))
 621                 return;
 622
 623         /* wait one more character time, based on baud rate */
 624         /* (tx_active doesn't seem to wait for the last byte) */
 625         baud_rate = port->baud_rate;
 626         if (baud_rate == 0)
 627                 baud_rate = 50;
 628         msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
 629 }
 630
 631 static int choose_config(struct usb_device *dev)
 632 {
 633         /*
 634          * There may be multiple configurations on this device, in which case
 635          * we would need to read and parse all of them to find out which one
 636          * we want. However, we just support one config at this point,
 637          * configuration # 1, which is Config Descriptor 0.
 638          */
 639
 640         dbg("%s - Number of Interfaces = %d",
 641                                 __func__, dev->config->desc.bNumInterfaces);
 642         dbg("%s - MAX Power            = %d",
 643                                 __func__, dev->config->desc.bMaxPower * 2);
 644
 645         if (dev->config->desc.bNumInterfaces != 1) {
 646                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n",
 647                                                                 __func__);
 648                 return -ENODEV;
 649         }
 650
 651         return 0;
 652 }
 653
 654 static int read_rom(struct edgeport_serial *serial,
 655                                 int start_address, int length, __u8 *buffer)
 656 {
 657         int status;
 658
 659         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 660                 status = read_download_mem(serial->serial->dev,
 661                                                start_address,
 662                                                length,
 663                                                serial->TI_I2C_Type,
 664                                                buffer);
 665         } else {
 666                 status = read_boot_mem(serial, start_address, length,
 667                                                                 buffer);
 668         }
 669         return status;
 670 }
 671
 672 static int write_rom(struct edgeport_serial *serial, int start_address,
 673                                                 int length, __u8 *buffer)
 674 {
 675         if (serial->product_info.TiMode == TI_MODE_BOOT)
 676                 return write_boot_mem(serial, start_address, length,
 677                                                                 buffer);
 678
 679         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 680                 return write_i2c_mem(serial, start_address, length,
 681                                                 serial->TI_I2C_Type, buffer);
 682         return -EINVAL;
 683 }
 684
 685
 686
 687 /* Read a descriptor header from I2C based on type */
 688 static int get_descriptor_addr(struct edgeport_serial *serial,
 689                                 int desc_type, struct ti_i2c_desc *rom_desc)
 690 {
 691         int start_address;
 692         int status;
 693
 694         /* Search for requested descriptor in I2C */
 695         start_address = 2;
 696         do {
 697                 status = read_rom(serial,
 698                                    start_address,
 699                                    sizeof(struct ti_i2c_desc),
 700                                    (__u8 *)rom_desc);
 701                 if (status)
 702                         return 0;
 703
 704                 if (rom_desc->Type == desc_type)
 705                         return start_address;
 706
 707                 start_address = start_address + sizeof(struct ti_i2c_desc)
 708                                                         + rom_desc->Size;
 709
 710         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 711
 712         return 0;
 713 }
 714
 715 /* Validate descriptor checksum */
 716 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 717 {
 718         __u16 i;
 719         __u8 cs = 0;
 720
 721         for (i = 0; i < rom_desc->Size; i++)
 722                 cs = (__u8)(cs + buffer[i]);
 723
 724         if (cs != rom_desc->CheckSum) {
 725                 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 726                 return -EINVAL;
 727         }
 728         return 0;
 729 }
 730
 731 /* Make sure that the I2C image is good */
 732 static int check_i2c_image(struct edgeport_serial *serial)
 733 {
 734         struct device *dev = &serial->serial->dev->dev;
 735         int status = 0;
 736         struct ti_i2c_desc *rom_desc;
 737         int start_address = 2;
 738         __u8 *buffer;
 739         __u16 ttype;
 740
 741         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 742         if (!rom_desc) {
 743                 dev_err(dev, "%s - out of memory\n", __func__);
 744                 return -ENOMEM;
 745         }
 746         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 747         if (!buffer) {
 748                 dev_err(dev, "%s - out of memory when allocating buffer\n",
 749                                                                 __func__);
 750                 kfree(rom_desc);
 751                 return -ENOMEM;
 752         }
 753
 754         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 755         status = read_rom(serial, 0, 1, buffer);
 756         if (status)
 757                 goto out;
 758
 759         if (*buffer != UMP5152 && *buffer != UMP3410) {
 760                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 761                 status = -ENODEV;
 762                 goto out;
 763         }
 764
 765         do {
 766                 /* Validate the I2C */
 767                 status = read_rom(serial,
 768                                 start_address,
 769                                 sizeof(struct ti_i2c_desc),
 770                                 (__u8 *)rom_desc);
 771                 if (status)
 772                         break;
 773
 774                 if ((start_address + sizeof(struct ti_i2c_desc) +
 775                                         rom_desc->Size) > TI_MAX_I2C_SIZE) {
 776                         status = -ENODEV;
 777                         dbg("%s - structure too big, erroring out.", __func__);
 778                         break;
 779                 }
 780
 781                 dbg("%s Type = 0x%x", __func__, rom_desc->Type);
 782
 783                 /* Skip type 2 record */
 784                 ttype = rom_desc->Type & 0x0f;
 785                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 786                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 787                         /* Read the descriptor data */
 788                         status = read_rom(serial, start_address +
 789                                                 sizeof(struct ti_i2c_desc),
 790                                                 rom_desc->Size, buffer);
 791                         if (status)
 792                                 break;
 793
 794                         status = valid_csum(rom_desc, buffer);
 795                         if (status)
 796                                 break;
 797                 }
 798                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 799                                                                 rom_desc->Size;
 800
 801         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 802                                 (start_address < TI_MAX_I2C_SIZE));
 803
 804         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 805                                 (start_address > TI_MAX_I2C_SIZE))
 806                 status = -ENODEV;
 807
 808 out:
 809         kfree(buffer);
 810         kfree(rom_desc);
 811         return status;
 812 }
 813
 814 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 815 {
 816         int status;
 817         int start_address;
 818         struct ti_i2c_desc *rom_desc;
 819         struct edge_ti_manuf_descriptor *desc;
 820
 821         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 822         if (!rom_desc) {
 823                 dev_err(&serial->serial->dev->dev, "%s - out of memory\n",
 824                                                                 __func__);
 825                 return -ENOMEM;
 826         }
 827         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 828                                                                 rom_desc);
 829
 830         if (!start_address) {
 831                 dbg("%s - Edge Descriptor not found in I2C", __func__);
 832                 status = -ENODEV;
 833                 goto exit;
 834         }
 835
 836         /* Read the descriptor data */
 837         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 838                                                 rom_desc->Size, buffer);
 839         if (status)
 840                 goto exit;
 841
 842         status = valid_csum(rom_desc, buffer);
 843
 844         desc = (struct edge_ti_manuf_descriptor *)buffer;
 845         dbg("%s - IonConfig      0x%x", __func__, desc->IonConfig);
 846         dbg("%s - Version          %d", __func__, desc->Version);
 847         dbg("%s - Cpu/Board      0x%x", __func__, desc->CpuRev_BoardRev);
 848         dbg("%s - NumPorts         %d", __func__, desc->NumPorts);
 849         dbg("%s - NumVirtualPorts  %d", __func__, desc->NumVirtualPorts);
 850         dbg("%s - TotalPorts       %d", __func__, desc->TotalPorts);
 851
 852 exit:
 853         kfree(rom_desc);
 854         return status;
 855 }
 856
 857 /* Build firmware header used for firmware update */
 858 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 859 {
 860         __u8 *buffer;
 861         int buffer_size;
 862         int i;
 863         int err;
 864         __u8 cs = 0;
 865         struct ti_i2c_desc *i2c_header;
 866         struct ti_i2c_image_header *img_header;
 867         struct ti_i2c_firmware_rec *firmware_rec;
 868         const struct firmware *fw;
 869         const char *fw_name = "edgeport/down3.bin";
 870
 871         /* In order to update the I2C firmware we must change the type 2 record
 872          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 873          * Then while in boot mode, the driver will download the latest
 874          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 875          * device comes back up in download mode the driver will cause the new
 876          * firmware to be copied from the UMP Ram to I2C and the firmware will
 877          * update the record type from 0xf2 to 0x02.
 878          */
 879
 880         /* Allocate a 15.5k buffer + 2 bytes for version number
 881          * (Firmware Record) */
 882         buffer_size = (((1024 * 16) - 512 ) +
 883                         sizeof(struct ti_i2c_firmware_rec));
 884
 885         buffer = kmalloc(buffer_size, GFP_KERNEL);
 886         if (!buffer) {
 887                 dev_err(dev, "%s - out of memory\n", __func__);
 888                 return -ENOMEM;
 889         }
 890
 891         // Set entire image of 0xffs
 892         memset(buffer, 0xff, buffer_size);
 893
 894         err = request_firmware(&fw, fw_name, dev);
 895         if (err) {
 896                 printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
 897                        fw_name, err);
 898                 kfree(buffer);
 899                 return err;
 900         }
 901
 902         /* Save Download Version Number */
 903         OperationalMajorVersion = fw->data[0];
 904         OperationalMinorVersion = fw->data[1];
 905         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 906
 907         /* Copy version number into firmware record */
 908         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 909
 910         firmware_rec->Ver_Major = OperationalMajorVersion;
 911         firmware_rec->Ver_Minor = OperationalMinorVersion;
 912
 913         /* Pointer to fw_down memory image */
 914         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 915
 916         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 917                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 918                 le16_to_cpu(img_header->Length));
 919
 920         release_firmware(fw);
 921
 922         for (i=0; i < buffer_size; i++) {
 923                 cs = (__u8)(cs + buffer[i]);
 924         }
 925
 926         kfree(buffer);
 927
 928         /* Build new header */
 929         i2c_header =  (struct ti_i2c_desc *)header;
 930         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 931
 932         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 933         i2c_header->Size        = (__u16)buffer_size;
 934         i2c_header->CheckSum    = cs;
 935         firmware_rec->Ver_Major = OperationalMajorVersion;
 936         firmware_rec->Ver_Minor = OperationalMinorVersion;
 937
 938         return 0;
 939 }
 940
 941 /* Try to figure out what type of I2c we have */
 942 static int i2c_type_bootmode(struct edgeport_serial *serial)
 943 {
 944         int status;
 945         u8 *data;
 946
 947         data = kmalloc(1, GFP_KERNEL);
 948         if (!data) {
 949                 dev_err(&serial->serial->dev->dev,
 950                                 "%s - out of memory\n", __func__);
 951                 return -ENOMEM;
 952         }
 953
 954         /* Try to read type 2 */
 955         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 956                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 957         if (status)
 958                 dbg("%s - read 2 status error = %d", __func__, status);
 959         else
 960                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 961         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 962                 dbg("%s - ROM_TYPE_II", __func__);
 963                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 964                 goto out;
 965         }
 966
 967         /* Try to read type 3 */
 968         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 969                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 970         if (status)
 971                 dbg("%s - read 3 status error = %d", __func__, status);
 972         else
 973                 dbg("%s - read 2 data = 0x%x", __func__, *data);
 974         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 975                 dbg("%s - ROM_TYPE_III", __func__);
 976                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 977                 goto out;
 978         }
 979
 980         dbg("%s - Unknown", __func__);
 981         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 982         status = -ENODEV;
 983 out:
 984         kfree(data);
 985         return status;
 986 }
 987
 988 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 989                                                 int length, int *num_sent)
 990 {
 991         int status;
 992
 993         status = usb_bulk_msg(serial->dev,
 994                         usb_sndbulkpipe(serial->dev,
 995                                 serial->port[0]->bulk_out_endpointAddress),
 996                         buffer, length, num_sent, 1000);
 997         return status;
 998 }
 999
1000 /* Download given firmware image to the device (IN BOOT MODE) */
1001 static int download_code(struct edgeport_serial *serial, __u8 *image,
1002                                                         int image_length)
1003 {
1004         int status = 0;
1005         int pos;
1006         int transfer;
1007         int done;
1008
1009         /* Transfer firmware image */
1010         for (pos = 0; pos < image_length; ) {
1011                 /* Read the next buffer from file */
1012                 transfer = image_length - pos;
1013                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1014                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1015
1016                 /* Transfer data */
1017                 status = bulk_xfer(serial->serial, &image[pos],
1018                                                         transfer, &done);
1019                 if (status)
1020                         break;
1021                 /* Advance buffer pointer */
1022                 pos += done;
1023         }
1024
1025         return status;
1026 }
1027
1028 /* FIXME!!! */
1029 static int config_boot_dev(struct usb_device *dev)
1030 {
1031         return 0;
1032 }
1033
1034 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
1035 {
1036         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
1037 }
1038
1039 /**
1040  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1041  *
1042  * This routine downloads the main operating code into the TI5052, using the
1043  * boot code already burned into E2PROM or ROM.
1044  */
1045 static int download_fw(struct edgeport_serial *serial)
1046 {
1047         struct device *dev = &serial->serial->dev->dev;
1048         int status = 0;
1049         int start_address;
1050         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1051         struct usb_interface_descriptor *interface;
1052         int download_cur_ver;
1053         int download_new_ver;
1054
1055         /* This routine is entered by both the BOOT mode and the Download mode
1056          * We can determine which code is running by the reading the config
1057          * descriptor and if we have only one bulk pipe it is in boot mode
1058          */
1059         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1060
1061         /* Default to type 2 i2c */
1062         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1063
1064         status = choose_config(serial->serial->dev);
1065         if (status)
1066                 return status;
1067
1068         interface = &serial->serial->interface->cur_altsetting->desc;
1069         if (!interface) {
1070                 dev_err(dev, "%s - no interface set, error!\n", __func__);
1071                 return -ENODEV;
1072         }
1073
1074         /*
1075          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1076          * if we have more than one endpoint we are definitely in download
1077          * mode
1078          */
1079         if (interface->bNumEndpoints > 1)
1080                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1081         else
1082                 /* Otherwise we will remain in configuring mode */
1083                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1084
1085         /********************************************************************/
1086         /* Download Mode */
1087         /********************************************************************/
1088         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1089                 struct ti_i2c_desc *rom_desc;
1090
1091                 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1092
1093                 status = check_i2c_image(serial);
1094                 if (status) {
1095                         dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1096                         return status;
1097                 }
1098
1099                 /* Validate Hardware version number
1100                  * Read Manufacturing Descriptor from TI Based Edgeport
1101                  */
1102                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1103                 if (!ti_manuf_desc) {
1104                         dev_err(dev, "%s - out of memory.\n", __func__);
1105                         return -ENOMEM;
1106                 }
1107                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1108                 if (status) {
1109                         kfree(ti_manuf_desc);
1110                         return status;
1111                 }
1112
1113                 /* Check version number of ION descriptor */
1114                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1115                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1116                                 __func__, ti_cpu_rev(ti_manuf_desc));
1117                         kfree(ti_manuf_desc);
1118                         return -EINVAL;
1119                 }
1120
1121                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1122                 if (!rom_desc) {
1123                         dev_err(dev, "%s - out of memory.\n", __func__);
1124                         kfree(ti_manuf_desc);
1125                         return -ENOMEM;
1126                 }
1127
1128                 /* Search for type 2 record (firmware record) */
1129                 start_address = get_descriptor_addr(serial,
1130                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1131                 if (start_address != 0) {
1132                         struct ti_i2c_firmware_rec *firmware_version;
1133                         u8 *record;
1134
1135                         dbg("%s - Found Type FIRMWARE (Type 2) record",
1136                                                                 __func__);
1137
1138                         firmware_version = kmalloc(sizeof(*firmware_version),
1139                                                                 GFP_KERNEL);
1140                         if (!firmware_version) {
1141                                 dev_err(dev, "%s - out of memory.\n", __func__);
1142                                 kfree(rom_desc);
1143                                 kfree(ti_manuf_desc);
1144                                 return -ENOMEM;
1145                         }
1146
1147                         /* Validate version number
1148                          * Read the descriptor data
1149                          */
1150                         status = read_rom(serial, start_address +
1151                                         sizeof(struct ti_i2c_desc),
1152                                         sizeof(struct ti_i2c_firmware_rec),
1153                                         (__u8 *)firmware_version);
1154                         if (status) {
1155                                 kfree(firmware_version);
1156                                 kfree(rom_desc);
1157                                 kfree(ti_manuf_desc);
1158                                 return status;
1159                         }
1160
1161                         /* Check version number of download with current
1162                            version in I2c */
1163                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1164                                            (firmware_version->Ver_Minor);
1165                         download_new_ver = (OperationalMajorVersion << 8) +
1166                                            (OperationalMinorVersion);
1167
1168                         dbg("%s - >> FW Versions Device %d.%d  Driver %d.%d",
1169                             __func__,
1170                             firmware_version->Ver_Major,
1171                             firmware_version->Ver_Minor,
1172                             OperationalMajorVersion,
1173                             OperationalMinorVersion);
1174
1175                         /* Check if we have an old version in the I2C and
1176                            update if necessary */
1177                         if (download_cur_ver != download_new_ver) {
1178                                 dbg("%s - Update I2C dld from %d.%d to %d.%d",
1179                                     __func__,
1180                                     firmware_version->Ver_Major,
1181                                     firmware_version->Ver_Minor,
1182                                     OperationalMajorVersion,
1183                                     OperationalMinorVersion);
1184
1185                                 record = kmalloc(1, GFP_KERNEL);
1186                                 if (!record) {
1187                                         dev_err(dev, "%s - out of memory.\n",
1188                                                         __func__);
1189                                         kfree(firmware_version);
1190                                         kfree(rom_desc);
1191                                         kfree(ti_manuf_desc);
1192                                         return -ENOMEM;
1193                                 }
1194                                 /* In order to update the I2C firmware we must
1195                                  * change the type 2 record to type 0xF2. This
1196                                  * will force the UMP to come up in Boot Mode.
1197                                  * Then while in boot mode, the driver will
1198                                  * download the latest firmware (padded to
1199                                  * 15.5k) into the UMP ram. Finally when the
1200                                  * device comes back up in download mode the
1201                                  * driver will cause the new firmware to be
1202                                  * copied from the UMP Ram to I2C and the
1203                                  * firmware will update the record type from
1204                                  * 0xf2 to 0x02.
1205                                  */
1206                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1207
1208                                 /* Change the I2C Firmware record type to
1209                                    0xf2 to trigger an update */
1210                                 status = write_rom(serial, start_address,
1211                                                 sizeof(*record), record);
1212                                 if (status) {
1213                                         kfree(record);
1214                                         kfree(firmware_version);
1215                                         kfree(rom_desc);
1216                                         kfree(ti_manuf_desc);
1217                                         return status;
1218                                 }
1219
1220                                 /* verify the write -- must do this in order
1221                                  * for write to complete before we do the
1222                                  * hardware reset
1223                                  */
1224                                 status = read_rom(serial,
1225                                                         start_address,
1226                                                         sizeof(*record),
1227                                                         record);
1228                                 if (status) {
1229                                         kfree(record);
1230                                         kfree(firmware_version);
1231                                         kfree(rom_desc);
1232                                         kfree(ti_manuf_desc);
1233                                         return status;
1234                                 }
1235
1236                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1237                                         dev_err(dev,
1238                                                 "%s - error resetting device\n",
1239                                                 __func__);
1240                                         kfree(record);
1241                                         kfree(firmware_version);
1242                                         kfree(rom_desc);
1243                                         kfree(ti_manuf_desc);
1244                                         return -ENODEV;
1245                                 }
1246
1247                                 dbg("%s - HARDWARE RESET", __func__);
1248
1249                                 /* Reset UMP -- Back to BOOT MODE */
1250                                 status = ti_vsend_sync(serial->serial->dev,
1251                                                 UMPC_HARDWARE_RESET,
1252                                                 0, 0, NULL, 0);
1253
1254                                 dbg("%s - HARDWARE RESET return %d",
1255                                                 __func__, status);
1256
1257                                 /* return an error on purpose. */
1258                                 kfree(record);
1259                                 kfree(firmware_version);
1260                                 kfree(rom_desc);
1261                                 kfree(ti_manuf_desc);
1262                                 return -ENODEV;
1263                         }
1264                         kfree(firmware_version);
1265                 }
1266                 /* Search for type 0xF2 record (firmware blank record) */
1267                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1268 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1269                                         sizeof(struct ti_i2c_firmware_rec))
1270                         __u8 *header;
1271                         __u8 *vheader;
1272
1273                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1274                         if (!header) {
1275                                 dev_err(dev, "%s - out of memory.\n", __func__);
1276                                 kfree(rom_desc);
1277                                 kfree(ti_manuf_desc);
1278                                 return -ENOMEM;
1279                         }
1280
1281                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1282                         if (!vheader) {
1283                                 dev_err(dev, "%s - out of memory.\n", __func__);
1284                                 kfree(header);
1285                                 kfree(rom_desc);
1286                                 kfree(ti_manuf_desc);
1287                                 return -ENOMEM;
1288                         }
1289
1290                         dbg("%s - Found Type BLANK FIRMWARE (Type F2) record",
1291                                                                 __func__);
1292
1293                         /*
1294                          * In order to update the I2C firmware we must change
1295                          * the type 2 record to type 0xF2. This will force the
1296                          * UMP to come up in Boot Mode.  Then while in boot
1297                          * mode, the driver will download the latest firmware
1298                          * (padded to 15.5k) into the UMP ram. Finally when the
1299                          * device comes back up in download mode the driver
1300                          * will cause the new firmware to be copied from the
1301                          * UMP Ram to I2C and the firmware will update the
1302                          * record type from 0xf2 to 0x02.
1303                          */
1304                         status = build_i2c_fw_hdr(header, dev);
1305                         if (status) {
1306                                 kfree(vheader);
1307                                 kfree(header);
1308                                 kfree(rom_desc);
1309                                 kfree(ti_manuf_desc);
1310                                 return status;
1311                         }
1312
1313                         /* Update I2C with type 0xf2 record with correct
1314                            size and checksum */
1315                         status = write_rom(serial,
1316                                                 start_address,
1317                                                 HEADER_SIZE,
1318                                                 header);
1319                         if (status) {
1320                                 kfree(vheader);
1321                                 kfree(header);
1322                                 kfree(rom_desc);
1323                                 kfree(ti_manuf_desc);
1324                                 return status;
1325                         }
1326
1327                         /* verify the write -- must do this in order for
1328                            write to complete before we do the hardware reset */
1329                         status = read_rom(serial, start_address,
1330                                                         HEADER_SIZE, vheader);
1331
1332                         if (status) {
1333                                 dbg("%s - can't read header back", __func__);
1334                                 kfree(vheader);
1335                                 kfree(header);
1336                                 kfree(rom_desc);
1337                                 kfree(ti_manuf_desc);
1338                                 return status;
1339                         }
1340                         if (memcmp(vheader, header, HEADER_SIZE)) {
1341                                 dbg("%s - write download record failed",
1342                                         __func__);
1343                                 kfree(vheader);
1344                                 kfree(header);
1345                                 kfree(rom_desc);
1346                                 kfree(ti_manuf_desc);
1347                                 return status;
1348                         }
1349
1350                         kfree(vheader);
1351                         kfree(header);
1352
1353                         dbg("%s - Start firmware update", __func__);
1354
1355                         /* Tell firmware to copy download image into I2C */
1356                         status = ti_vsend_sync(serial->serial->dev,
1357                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1358
1359                         dbg("%s - Update complete 0x%x", __func__, status);
1360                         if (status) {
1361                                 dev_err(dev,
1362                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1363                                                                 __func__);
1364                                 kfree(rom_desc);
1365                                 kfree(ti_manuf_desc);
1366                                 return status;
1367                         }
1368                 }
1369
1370                 // The device is running the download code
1371                 kfree(rom_desc);
1372                 kfree(ti_manuf_desc);
1373                 return 0;
1374         }
1375
1376         /********************************************************************/
1377         /* Boot Mode */
1378         /********************************************************************/
1379         dbg("%s - RUNNING IN BOOT MODE", __func__);
1380
1381         /* Configure the TI device so we can use the BULK pipes for download */
1382         status = config_boot_dev(serial->serial->dev);
1383         if (status)
1384                 return status;
1385
1386         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1387                                                         != USB_VENDOR_ID_ION) {
1388                 dbg("%s - VID = 0x%x", __func__,
1389                      le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1390                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1391                 goto stayinbootmode;
1392         }
1393
1394         /* We have an ION device (I2c Must be programmed)
1395            Determine I2C image type */
1396         if (i2c_type_bootmode(serial))
1397                 goto stayinbootmode;
1398
1399         /* Check for ION Vendor ID and that the I2C is valid */
1400         if (!check_i2c_image(serial)) {
1401                 struct ti_i2c_image_header *header;
1402                 int i;
1403                 __u8 cs = 0;
1404                 __u8 *buffer;
1405                 int buffer_size;
1406                 int err;
1407                 const struct firmware *fw;
1408                 const char *fw_name = "edgeport/down3.bin";
1409
1410                 /* Validate Hardware version number
1411                  * Read Manufacturing Descriptor from TI Based Edgeport
1412                  */
1413                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1414                 if (!ti_manuf_desc) {
1415                         dev_err(dev, "%s - out of memory.\n", __func__);
1416                         return -ENOMEM;
1417                 }
1418                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1419                 if (status) {
1420                         kfree(ti_manuf_desc);
1421                         goto stayinbootmode;
1422                 }
1423
1424                 /* Check for version 2 */
1425                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1426                         dbg("%s - Wrong CPU Rev %d (Must be 2)",
1427                                         __func__, ti_cpu_rev(ti_manuf_desc));
1428                         kfree(ti_manuf_desc);
1429                         goto stayinbootmode;
1430                 }
1431
1432                 kfree(ti_manuf_desc);
1433
1434                 /*
1435                  * In order to update the I2C firmware we must change the type
1436                  * 2 record to type 0xF2. This will force the UMP to come up
1437                  * in Boot Mode.  Then while in boot mode, the driver will
1438                  * download the latest firmware (padded to 15.5k) into the
1439                  * UMP ram. Finally when the device comes back up in download
1440                  * mode the driver will cause the new firmware to be copied
1441                  * from the UMP Ram to I2C and the firmware will update the
1442                  * record type from 0xf2 to 0x02.
1443                  *
1444                  * Do we really have to copy the whole firmware image,
1445                  * or could we do this in place!
1446                  */
1447
1448                 /* Allocate a 15.5k buffer + 3 byte header */
1449                 buffer_size = (((1024 * 16) - 512) +
1450                                         sizeof(struct ti_i2c_image_header));
1451                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1452                 if (!buffer) {
1453                         dev_err(dev, "%s - out of memory\n", __func__);
1454                         return -ENOMEM;
1455                 }
1456
1457                 /* Initialize the buffer to 0xff (pad the buffer) */
1458                 memset(buffer, 0xff, buffer_size);
1459
1460                 err = request_firmware(&fw, fw_name, dev);
1461                 if (err) {
1462                         printk(KERN_ERR "Failed to load image \"%s\" err %d\n",
1463                                fw_name, err);
1464                         kfree(buffer);
1465                         return err;
1466                 }
1467                 memcpy(buffer, &fw->data[4], fw->size - 4);
1468                 release_firmware(fw);
1469
1470                 for (i = sizeof(struct ti_i2c_image_header);
1471                                 i < buffer_size; i++) {
1472                         cs = (__u8)(cs + buffer[i]);
1473                 }
1474
1475                 header = (struct ti_i2c_image_header *)buffer;
1476
1477                 /* update length and checksum after padding */
1478                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1479                                         sizeof(struct ti_i2c_image_header)));
1480                 header->CheckSum = cs;
1481
1482                 /* Download the operational code  */
1483                 dbg("%s - Downloading operational code image (TI UMP)",
1484                                                                 __func__);
1485                 status = download_code(serial, buffer, buffer_size);
1486
1487                 kfree(buffer);
1488
1489                 if (status) {
1490                         dbg("%s - Error downloading operational code image",
1491                                                                 __func__);
1492                         return status;
1493                 }
1494
1495                 /* Device will reboot */
1496                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1497
1498                 dbg("%s - Download successful -- Device rebooting...",
1499                                                                 __func__);
1500
1501                 /* return an error on purpose */
1502                 return -ENODEV;
1503         }
1504
1505 stayinbootmode:
1506         /* Eprom is invalid or blank stay in boot mode */
1507         dbg("%s - STAYING IN BOOT MODE", __func__);
1508         serial->product_info.TiMode = TI_MODE_BOOT;
1509
1510         return 0;
1511 }
1512
1513
1514 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1515 {
1516         int port_number = port->port->number - port->port->serial->minor;
1517         on = !!on;      /* 1 or 0 not bitmask */
1518         return send_cmd(port->port->serial->dev,
1519                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1520                         on, NULL, 0);
1521 }
1522
1523
1524 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1525 {
1526         int status = 0;
1527
1528         dbg("%s - %x", __func__, mcr);
1529
1530         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1531         if (status)
1532                 return status;
1533         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1534         if (status)
1535                 return status;
1536         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1537 }
1538
1539 /* Convert TI LSR to standard UART flags */
1540 static __u8 map_line_status(__u8 ti_lsr)
1541 {
1542         __u8 lsr = 0;
1543
1544 #define MAP_FLAG(flagUmp, flagUart)    \
1545         if (ti_lsr & flagUmp) \
1546                 lsr |= flagUart;
1547
1548         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1549         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1550         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1551         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1552         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1553         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1554
1555 #undef MAP_FLAG
1556
1557         return lsr;
1558 }
1559
1560 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1561 {
1562         struct async_icount *icount;
1563         struct tty_struct *tty;
1564
1565         dbg("%s - %02x", __func__, msr);
1566
1567         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1568                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1569                 icount = &edge_port->icount;
1570
1571                 /* update input line counters */
1572                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1573                         icount->cts++;
1574                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1575                         icount->dsr++;
1576                 if (msr & EDGEPORT_MSR_DELTA_CD)
1577                         icount->dcd++;
1578                 if (msr & EDGEPORT_MSR_DELTA_RI)
1579                         icount->rng++;
1580                 wake_up_interruptible(&edge_port->delta_msr_wait);
1581         }
1582
1583         /* Save the new modem status */
1584         edge_port->shadow_msr = msr & 0xf0;
1585
1586         tty = tty_port_tty_get(&edge_port->port->port);
1587         /* handle CTS flow control */
1588         if (tty && C_CRTSCTS(tty)) {
1589                 if (msr & EDGEPORT_MSR_CTS) {
1590                         tty->hw_stopped = 0;
1591                         tty_wakeup(tty);
1592                 } else {
1593                         tty->hw_stopped = 1;
1594                 }
1595         }
1596         tty_kref_put(tty);
1597
1598         return;
1599 }
1600
1601 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1602                                                         __u8 lsr, __u8 data)
1603 {
1604         struct async_icount *icount;
1605         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1606                                                 LSR_FRM_ERR | LSR_BREAK));
1607         struct tty_struct *tty;
1608
1609         dbg("%s - %02x", __func__, new_lsr);
1610
1611         edge_port->shadow_lsr = lsr;
1612
1613         if (new_lsr & LSR_BREAK)
1614                 /*
1615                  * Parity and Framing errors only count if they
1616                  * occur exclusive of a break being received.
1617                  */
1618                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1619
1620         /* Place LSR data byte into Rx buffer */
1621         if (lsr_data) {
1622                 tty = tty_port_tty_get(&edge_port->port->port);
1623                 if (tty) {
1624                         edge_tty_recv(&edge_port->port->dev, tty, &data, 1);
1625                         tty_kref_put(tty);
1626                 }
1627         }
1628
1629         /* update input line counters */
1630         icount = &edge_port->icount;
1631         if (new_lsr & LSR_BREAK)
1632                 icount->brk++;
1633         if (new_lsr & LSR_OVER_ERR)
1634                 icount->overrun++;
1635         if (new_lsr & LSR_PAR_ERR)
1636                 icount->parity++;
1637         if (new_lsr & LSR_FRM_ERR)
1638                 icount->frame++;
1639 }
1640
1641
1642 static void edge_interrupt_callback(struct urb *urb)
1643 {
1644         struct edgeport_serial *edge_serial = urb->context;
1645         struct usb_serial_port *port;
1646         struct edgeport_port *edge_port;
1647         unsigned char *data = urb->transfer_buffer;
1648         int length = urb->actual_length;
1649         int port_number;
1650         int function;
1651         int retval;
1652         __u8 lsr;
1653         __u8 msr;
1654         int status = urb->status;
1655
1656         dbg("%s", __func__);
1657
1658         switch (status) {
1659         case 0:
1660                 /* success */
1661                 break;
1662         case -ECONNRESET:
1663         case -ENOENT:
1664         case -ESHUTDOWN:
1665                 /* this urb is terminated, clean up */
1666                 dbg("%s - urb shutting down with status: %d",
1667                     __func__, status);
1668                 return;
1669         default:
1670                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1671                         "%d\n", __func__, status);
1672                 goto exit;
1673         }
1674
1675         if (!length) {
1676                 dbg("%s - no data in urb", __func__);
1677                 goto exit;
1678         }
1679
1680         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev,
1681                                                 __func__, length, data);
1682
1683         if (length != 2) {
1684                 dbg("%s - expecting packet of size 2, got %d",
1685                                                         __func__, length);
1686                 goto exit;
1687         }
1688
1689         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1690         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1691         dbg("%s - port_number %d, function %d, info 0x%x",
1692              __func__, port_number, function, data[1]);
1693         port = edge_serial->serial->port[port_number];
1694         edge_port = usb_get_serial_port_data(port);
1695         if (!edge_port) {
1696                 dbg("%s - edge_port not found", __func__);
1697                 return;
1698         }
1699         switch (function) {
1700         case TIUMP_INTERRUPT_CODE_LSR:
1701                 lsr = map_line_status(data[1]);
1702                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1703                         /* Save the LSR event for bulk read
1704                            completion routine */
1705                         dbg("%s - LSR Event Port %u LSR Status = %02x",
1706                              __func__, port_number, lsr);
1707                         edge_port->lsr_event = 1;
1708                         edge_port->lsr_mask = lsr;
1709                 } else {
1710                         dbg("%s - ===== Port %d LSR Status = %02x ======",
1711                              __func__, port_number, lsr);
1712                         handle_new_lsr(edge_port, 0, lsr, 0);
1713                 }
1714                 break;
1715
1716         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1717                 /* Copy MSR from UMP */
1718                 msr = data[1];
1719                 dbg("%s - ===== Port %u MSR Status = %02x ======\n",
1720                      __func__, port_number, msr);
1721                 handle_new_msr(edge_port, msr);
1722                 break;
1723
1724         default:
1725                 dev_err(&urb->dev->dev,
1726                         "%s - Unknown Interrupt code from UMP %x\n",
1727                         __func__, data[1]);
1728                 break;
1729
1730         }
1731
1732 exit:
1733         retval = usb_submit_urb(urb, GFP_ATOMIC);
1734         if (retval)
1735                 dev_err(&urb->dev->dev,
1736                         "%s - usb_submit_urb failed with result %d\n",
1737                          __func__, retval);
1738 }
1739
1740 static void edge_bulk_in_callback(struct urb *urb)
1741 {
1742         struct edgeport_port *edge_port = urb->context;
1743         unsigned char *data = urb->transfer_buffer;
1744         struct tty_struct *tty;
1745         int retval = 0;
1746         int port_number;
1747         int status = urb->status;
1748
1749         dbg("%s", __func__);
1750
1751         switch (status) {
1752         case 0:
1753                 /* success */
1754                 break;
1755         case -ECONNRESET:
1756         case -ENOENT:
1757         case -ESHUTDOWN:
1758                 /* this urb is terminated, clean up */
1759                 dbg("%s - urb shutting down with status: %d",
1760                     __func__, status);
1761                 return;
1762         default:
1763                 dev_err(&urb->dev->dev,
1764                         "%s - nonzero read bulk status received: %d\n",
1765                              __func__, status);
1766         }
1767
1768         if (status == -EPIPE)
1769                 goto exit;
1770
1771         if (status) {
1772                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1773                 return;
1774         }
1775
1776         port_number = edge_port->port->number - edge_port->port->serial->minor;
1777
1778         if (edge_port->lsr_event) {
1779                 edge_port->lsr_event = 0;
1780                 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1781                      __func__, port_number, edge_port->lsr_mask, *data);
1782                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1783                 /* Adjust buffer length/pointer */
1784                 --urb->actual_length;
1785                 ++data;
1786         }
1787
1788         tty = tty_port_tty_get(&edge_port->port->port);
1789         if (tty && urb->actual_length) {
1790                 usb_serial_debug_data(debug, &edge_port->port->dev,
1791                                         __func__, urb->actual_length, data);
1792                 if (edge_port->close_pending)
1793                         dbg("%s - close pending, dropping data on the floor",
1794                                                                 __func__);
1795                 else
1796                         edge_tty_recv(&edge_port->port->dev, tty, data,
1797                                                         urb->actual_length);
1798                 edge_port->icount.rx += urb->actual_length;
1799         }
1800         tty_kref_put(tty);
1801
1802 exit:
1803         /* continue read unless stopped */
1804         spin_lock(&edge_port->ep_lock);
1805         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1806                 urb->dev = edge_port->port->serial->dev;
1807                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1808         } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1809                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1810         }
1811         spin_unlock(&edge_port->ep_lock);
1812         if (retval)
1813                 dev_err(&urb->dev->dev,
1814                         "%s - usb_submit_urb failed with result %d\n",
1815                          __func__, retval);
1816 }
1817
1818 static void edge_tty_recv(struct device *dev, struct tty_struct *tty,
1819                                         unsigned char *data, int length)
1820 {
1821         int queued;
1822
1823         tty_buffer_request_room(tty, length);
1824         queued = tty_insert_flip_string(tty, data, length);
1825         if (queued < length)
1826                 dev_err(dev, "%s - dropping data, %d bytes lost\n",
1827                         __func__, length - queued);
1828         tty_flip_buffer_push(tty);
1829 }
1830
1831 static void edge_bulk_out_callback(struct urb *urb)
1832 {
1833         struct usb_serial_port *port = urb->context;
1834         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1835         int status = urb->status;
1836         struct tty_struct *tty;
1837
1838         dbg("%s - port %d", __func__, port->number);
1839
1840         edge_port->ep_write_urb_in_use = 0;
1841
1842         switch (status) {
1843         case 0:
1844                 /* success */
1845                 break;
1846         case -ECONNRESET:
1847         case -ENOENT:
1848         case -ESHUTDOWN:
1849                 /* this urb is terminated, clean up */
1850                 dbg("%s - urb shutting down with status: %d",
1851                     __func__, status);
1852                 return;
1853         default:
1854                 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1855                         "received: %d\n", __func__, status);
1856         }
1857
1858         /* send any buffered data */
1859         tty = tty_port_tty_get(&port->port);
1860         edge_send(tty);
1861         tty_kref_put(tty);
1862 }
1863
1864 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1865 {
1866         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1867         struct edgeport_serial *edge_serial;
1868         struct usb_device *dev;
1869         struct urb *urb;
1870         int port_number;
1871         int status;
1872         u16 open_settings;
1873         u8 transaction_timeout;
1874
1875         dbg("%s - port %d", __func__, port->number);
1876
1877         if (edge_port == NULL)
1878                 return -ENODEV;
1879
1880         port_number = port->number - port->serial->minor;
1881         switch (port_number) {
1882         case 0:
1883                 edge_port->uart_base = UMPMEM_BASE_UART1;
1884                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1885                 break;
1886         case 1:
1887                 edge_port->uart_base = UMPMEM_BASE_UART2;
1888                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1889                 break;
1890         default:
1891                 dev_err(&port->dev, "Unknown port number!!!\n");
1892                 return -ENODEV;
1893         }
1894
1895         dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1896                                 __func__, port_number, edge_port->uart_base,
1897                                 edge_port->dma_address);
1898
1899         dev = port->serial->dev;
1900
1901         memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1902         init_waitqueue_head(&edge_port->delta_msr_wait);
1903
1904         /* turn off loopback */
1905         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1906         if (status) {
1907                 dev_err(&port->dev,
1908                                 "%s - cannot send clear loopback command, %d\n",
1909                         __func__, status);
1910                 return status;
1911         }
1912
1913         /* set up the port settings */
1914         if (tty)
1915                 edge_set_termios(tty, port, tty->termios);
1916
1917         /* open up the port */
1918
1919         /* milliseconds to timeout for DMA transfer */
1920         transaction_timeout = 2;
1921
1922         edge_port->ump_read_timeout =
1923                                 max(20, ((transaction_timeout * 3) / 2));
1924
1925         /* milliseconds to timeout for DMA transfer */
1926         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1927                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1928                              (transaction_timeout << 2));
1929
1930         dbg("%s - Sending UMPC_OPEN_PORT", __func__);
1931
1932         /* Tell TI to open and start the port */
1933         status = send_cmd(dev, UMPC_OPEN_PORT,
1934                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1935         if (status) {
1936                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1937                                                         __func__, status);
1938                 return status;
1939         }
1940
1941         /* Start the DMA? */
1942         status = send_cmd(dev, UMPC_START_PORT,
1943                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1944         if (status) {
1945                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1946                                                         __func__, status);
1947                 return status;
1948         }
1949
1950         /* Clear TX and RX buffers in UMP */
1951         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1952         if (status) {
1953                 dev_err(&port->dev,
1954                         "%s - cannot send clear buffers command, %d\n",
1955                         __func__, status);
1956                 return status;
1957         }
1958
1959         /* Read Initial MSR */
1960         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1961                                 (__u16)(UMPM_UART1_PORT + port_number),
1962                                 &edge_port->shadow_msr, 1);
1963         if (status) {
1964                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1965                                                         __func__, status);
1966                 return status;
1967         }
1968
1969         dbg("ShadowMSR 0x%X", edge_port->shadow_msr);
1970
1971         /* Set Initial MCR */
1972         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1973         dbg("ShadowMCR 0x%X", edge_port->shadow_mcr);
1974
1975         edge_serial = edge_port->edge_serial;
1976         if (mutex_lock_interruptible(&edge_serial->es_lock))
1977                 return -ERESTARTSYS;
1978         if (edge_serial->num_ports_open == 0) {
1979                 /* we are the first port to open, post the interrupt urb */
1980                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1981                 if (!urb) {
1982                         dev_err(&port->dev,
1983                                 "%s - no interrupt urb present, exiting\n",
1984                                 __func__);
1985                         status = -EINVAL;
1986                         goto release_es_lock;
1987                 }
1988                 urb->complete = edge_interrupt_callback;
1989                 urb->context = edge_serial;
1990                 urb->dev = dev;
1991                 status = usb_submit_urb(urb, GFP_KERNEL);
1992                 if (status) {
1993                         dev_err(&port->dev,
1994                                 "%s - usb_submit_urb failed with value %d\n",
1995                                         __func__, status);
1996                         goto release_es_lock;
1997                 }
1998         }
1999
2000         /*
2001          * reset the data toggle on the bulk endpoints to work around bug in
2002          * host controllers where things get out of sync some times
2003          */
2004         usb_clear_halt(dev, port->write_urb->pipe);
2005         usb_clear_halt(dev, port->read_urb->pipe);
2006
2007         /* start up our bulk read urb */
2008         urb = port->read_urb;
2009         if (!urb) {
2010                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
2011                                                                 __func__);
2012                 status = -EINVAL;
2013                 goto unlink_int_urb;
2014         }
2015         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2016         urb->complete = edge_bulk_in_callback;
2017         urb->context = edge_port;
2018         urb->dev = dev;
2019         status = usb_submit_urb(urb, GFP_KERNEL);
2020         if (status) {
2021                 dev_err(&port->dev,
2022                         "%s - read bulk usb_submit_urb failed with value %d\n",
2023                                 __func__, status);
2024                 goto unlink_int_urb;
2025         }
2026
2027         ++edge_serial->num_ports_open;
2028
2029         dbg("%s - exited", __func__);
2030
2031         goto release_es_lock;
2032
2033 unlink_int_urb:
2034         if (edge_port->edge_serial->num_ports_open == 0)
2035                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2036 release_es_lock:
2037         mutex_unlock(&edge_serial->es_lock);
2038         return status;
2039 }
2040
2041 static void edge_close(struct usb_serial_port *port)
2042 {
2043         struct edgeport_serial *edge_serial;
2044         struct edgeport_port *edge_port;
2045         int port_number;
2046         int status;
2047
2048         dbg("%s - port %d", __func__, port->number);
2049
2050         edge_serial = usb_get_serial_data(port->serial);
2051         edge_port = usb_get_serial_port_data(port);
2052         if (edge_serial == NULL || edge_port == NULL)
2053                 return;
2054
2055         /* The bulkreadcompletion routine will check
2056          * this flag and dump add read data */
2057         edge_port->close_pending = 1;
2058
2059         /* chase the port close and flush */
2060         chase_port(edge_port, (HZ * closing_wait) / 100, 1);
2061
2062         usb_kill_urb(port->read_urb);
2063         usb_kill_urb(port->write_urb);
2064         edge_port->ep_write_urb_in_use = 0;
2065
2066         /* assuming we can still talk to the device,
2067          * send a close port command to it */
2068         dbg("%s - send umpc_close_port", __func__);
2069         port_number = port->number - port->serial->minor;
2070         status = send_cmd(port->serial->dev,
2071                                      UMPC_CLOSE_PORT,
2072                                      (__u8)(UMPM_UART1_PORT + port_number),
2073                                      0,
2074                                      NULL,
2075                                      0);
2076         mutex_lock(&edge_serial->es_lock);
2077         --edge_port->edge_serial->num_ports_open;
2078         if (edge_port->edge_serial->num_ports_open <= 0) {
2079                 /* last port is now closed, let's shut down our interrupt urb */
2080                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2081                 edge_port->edge_serial->num_ports_open = 0;
2082         }
2083         mutex_unlock(&edge_serial->es_lock);
2084         edge_port->close_pending = 0;
2085
2086         dbg("%s - exited", __func__);
2087 }
2088
2089 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
2090                                 const unsigned char *data, int count)
2091 {
2092         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2093         unsigned long flags;
2094
2095         dbg("%s - port %d", __func__, port->number);
2096
2097         if (count == 0) {
2098                 dbg("%s - write request of 0 bytes", __func__);
2099                 return 0;
2100         }
2101
2102         if (edge_port == NULL)
2103                 return -ENODEV;
2104         if (edge_port->close_pending == 1)
2105                 return -ENODEV;
2106
2107         spin_lock_irqsave(&edge_port->ep_lock, flags);
2108         count = edge_buf_put(edge_port->ep_out_buf, data, count);
2109         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2110
2111         edge_send(tty);
2112
2113         return count;
2114 }
2115
2116 static void edge_send(struct tty_struct *tty)
2117 {
2118         struct usb_serial_port *port = tty->driver_data;
2119         int count, result;
2120         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2121         unsigned long flags;
2122
2123
2124         dbg("%s - port %d", __func__, port->number);
2125
2126         spin_lock_irqsave(&edge_port->ep_lock, flags);
2127
2128         if (edge_port->ep_write_urb_in_use) {
2129                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2130                 return;
2131         }
2132
2133         count = edge_buf_get(edge_port->ep_out_buf,
2134                                 port->write_urb->transfer_buffer,
2135                                 port->bulk_out_size);
2136
2137         if (count == 0) {
2138                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2139                 return;
2140         }
2141
2142         edge_port->ep_write_urb_in_use = 1;
2143
2144         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2145
2146         usb_serial_debug_data(debug, &port->dev, __func__, count,
2147                                 port->write_urb->transfer_buffer);
2148
2149         /* set up our urb */
2150         usb_fill_bulk_urb(port->write_urb, port->serial->dev,
2151                            usb_sndbulkpipe(port->serial->dev,
2152                                             port->bulk_out_endpointAddress),
2153                            port->write_urb->transfer_buffer, count,
2154                            edge_bulk_out_callback,
2155                            port);
2156
2157         /* send the data out the bulk port */
2158         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2159         if (result) {
2160                 dev_err(&port->dev,
2161                         "%s - failed submitting write urb, error %d\n",
2162                                 __func__, result);
2163                 edge_port->ep_write_urb_in_use = 0;
2164                 /* TODO: reschedule edge_send */
2165         } else
2166                 edge_port->icount.tx += count;
2167
2168         /* wakeup any process waiting for writes to complete */
2169         /* there is now more room in the buffer for new writes */
2170         if (tty)
2171                 tty_wakeup(tty);
2172 }
2173
2174 static int edge_write_room(struct tty_struct *tty)
2175 {
2176         struct usb_serial_port *port = tty->driver_data;
2177         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2178         int room = 0;
2179         unsigned long flags;
2180
2181         dbg("%s - port %d", __func__, port->number);
2182
2183         if (edge_port == NULL)
2184                 return 0;
2185         if (edge_port->close_pending == 1)
2186                 return 0;
2187
2188         spin_lock_irqsave(&edge_port->ep_lock, flags);
2189         room = edge_buf_space_avail(edge_port->ep_out_buf);
2190         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2191
2192         dbg("%s - returns %d", __func__, room);
2193         return room;
2194 }
2195
2196 static int edge_chars_in_buffer(struct tty_struct *tty)
2197 {
2198         struct usb_serial_port *port = tty->driver_data;
2199         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2200         int chars = 0;
2201         unsigned long flags;
2202
2203         dbg("%s - port %d", __func__, port->number);
2204
2205         if (edge_port == NULL)
2206                 return 0;
2207         if (edge_port->close_pending == 1)
2208                 return 0;
2209
2210         spin_lock_irqsave(&edge_port->ep_lock, flags);
2211         chars = edge_buf_data_avail(edge_port->ep_out_buf);
2212         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2213
2214         dbg("%s - returns %d", __func__, chars);
2215         return chars;
2216 }
2217
2218 static void edge_throttle(struct tty_struct *tty)
2219 {
2220         struct usb_serial_port *port = tty->driver_data;
2221         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2222         int status;
2223
2224         dbg("%s - port %d", __func__, port->number);
2225
2226         if (edge_port == NULL)
2227                 return;
2228
2229         /* if we are implementing XON/XOFF, send the stop character */
2230         if (I_IXOFF(tty)) {
2231                 unsigned char stop_char = STOP_CHAR(tty);
2232                 status = edge_write(tty, port, &stop_char, 1);
2233                 if (status <= 0) {
2234                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2235                 }
2236         }
2237
2238         /* if we are implementing RTS/CTS, stop reads */
2239         /* and the Edgeport will clear the RTS line */
2240         if (C_CRTSCTS(tty))
2241                 stop_read(edge_port);
2242
2243 }
2244
2245 static void edge_unthrottle(struct tty_struct *tty)
2246 {
2247         struct usb_serial_port *port = tty->driver_data;
2248         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2249         int status;
2250
2251         dbg("%s - port %d", __func__, port->number);
2252
2253         if (edge_port == NULL)
2254                 return;
2255
2256         /* if we are implementing XON/XOFF, send the start character */
2257         if (I_IXOFF(tty)) {
2258                 unsigned char start_char = START_CHAR(tty);
2259                 status = edge_write(tty, port, &start_char, 1);
2260                 if (status <= 0) {
2261                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2262                 }
2263         }
2264         /* if we are implementing RTS/CTS, restart reads */
2265         /* are the Edgeport will assert the RTS line */
2266         if (C_CRTSCTS(tty)) {
2267                 status = restart_read(edge_port);
2268                 if (status)
2269                         dev_err(&port->dev,
2270                                 "%s - read bulk usb_submit_urb failed: %d\n",
2271                                                         __func__, status);
2272         }
2273
2274 }
2275
2276 static void stop_read(struct edgeport_port *edge_port)
2277 {
2278         unsigned long flags;
2279
2280         spin_lock_irqsave(&edge_port->ep_lock, flags);
2281
2282         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2283                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2284         edge_port->shadow_mcr &= ~MCR_RTS;
2285
2286         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2287 }
2288
2289 static int restart_read(struct edgeport_port *edge_port)
2290 {
2291         struct urb *urb;
2292         int status = 0;
2293         unsigned long flags;
2294
2295         spin_lock_irqsave(&edge_port->ep_lock, flags);
2296
2297         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2298                 urb = edge_port->port->read_urb;
2299                 urb->complete = edge_bulk_in_callback;
2300                 urb->context = edge_port;
2301                 urb->dev = edge_port->port->serial->dev;
2302                 status = usb_submit_urb(urb, GFP_ATOMIC);
2303         }
2304         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2305         edge_port->shadow_mcr |= MCR_RTS;
2306
2307         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2308
2309         return status;
2310 }
2311
2312 static void change_port_settings(struct tty_struct *tty,
2313                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2314 {
2315         struct ump_uart_config *config;
2316         int baud;
2317         unsigned cflag;
2318         int status;
2319         int port_number = edge_port->port->number -
2320                                         edge_port->port->serial->minor;
2321
2322         dbg("%s - port %d", __func__, edge_port->port->number);
2323
2324         config = kmalloc (sizeof (*config), GFP_KERNEL);
2325         if (!config) {
2326                 *tty->termios = *old_termios;
2327                 dev_err(&edge_port->port->dev, "%s - out of memory\n",
2328                                                                 __func__);
2329                 return;
2330         }
2331
2332         cflag = tty->termios->c_cflag;
2333
2334         config->wFlags = 0;
2335
2336         /* These flags must be set */
2337         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2338         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2339         config->bUartMode = (__u8)(edge_port->bUartMode);
2340
2341         switch (cflag & CSIZE) {
2342         case CS5:
2343                     config->bDataBits = UMP_UART_CHAR5BITS;
2344                     dbg("%s - data bits = 5", __func__);
2345                     break;
2346         case CS6:
2347                     config->bDataBits = UMP_UART_CHAR6BITS;
2348                     dbg("%s - data bits = 6", __func__);
2349                     break;
2350         case CS7:
2351                     config->bDataBits = UMP_UART_CHAR7BITS;
2352                     dbg("%s - data bits = 7", __func__);
2353                     break;
2354         default:
2355         case CS8:
2356                     config->bDataBits = UMP_UART_CHAR8BITS;
2357                     dbg("%s - data bits = 8", __func__);
2358                             break;
2359         }
2360
2361         if (cflag & PARENB) {
2362                 if (cflag & PARODD) {
2363                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2364                         config->bParity = UMP_UART_ODDPARITY;
2365                         dbg("%s - parity = odd", __func__);
2366                 } else {
2367                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2368                         config->bParity = UMP_UART_EVENPARITY;
2369                         dbg("%s - parity = even", __func__);
2370                 }
2371         } else {
2372                 config->bParity = UMP_UART_NOPARITY;
2373                 dbg("%s - parity = none", __func__);
2374         }
2375
2376         if (cflag & CSTOPB) {
2377                 config->bStopBits = UMP_UART_STOPBIT2;
2378                 dbg("%s - stop bits = 2", __func__);
2379         } else {
2380                 config->bStopBits = UMP_UART_STOPBIT1;
2381                 dbg("%s - stop bits = 1", __func__);
2382         }
2383
2384         /* figure out the flow control settings */
2385         if (cflag & CRTSCTS) {
2386                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2387                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2388                 dbg("%s - RTS/CTS is enabled", __func__);
2389         } else {
2390                 dbg("%s - RTS/CTS is disabled", __func__);
2391                 tty->hw_stopped = 0;
2392                 restart_read(edge_port);
2393         }
2394
2395         /* if we are implementing XON/XOFF, set the start and stop
2396            character in the device */
2397         config->cXon  = START_CHAR(tty);
2398         config->cXoff = STOP_CHAR(tty);
2399
2400         /* if we are implementing INBOUND XON/XOFF */
2401         if (I_IXOFF(tty)) {
2402                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2403                 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2404                      __func__, config->cXon, config->cXoff);
2405         } else
2406                 dbg("%s - INBOUND XON/XOFF is disabled", __func__);
2407
2408         /* if we are implementing OUTBOUND XON/XOFF */
2409         if (I_IXON(tty)) {
2410                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2411                 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2412                      __func__, config->cXon, config->cXoff);
2413         } else
2414                 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__);
2415
2416         tty->termios->c_cflag &= ~CMSPAR;
2417
2418         /* Round the baud rate */
2419         baud = tty_get_baud_rate(tty);
2420         if (!baud) {
2421                 /* pick a default, any default... */
2422                 baud = 9600;
2423         } else
2424                 tty_encode_baud_rate(tty, baud, baud);
2425
2426         edge_port->baud_rate = baud;
2427         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2428
2429         /* FIXME: Recompute actual baud from divisor here */
2430
2431         dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud,
2432                                                         config->wBaudRate);
2433
2434         dbg("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2435         dbg("wFlags:    0x%x", config->wFlags);
2436         dbg("bDataBits:   %d", config->bDataBits);
2437         dbg("bParity:     %d", config->bParity);
2438         dbg("bStopBits:   %d", config->bStopBits);
2439         dbg("cXon:        %d", config->cXon);
2440         dbg("cXoff:       %d", config->cXoff);
2441         dbg("bUartMode:   %d", config->bUartMode);
2442
2443         /* move the word values into big endian mode */
2444         cpu_to_be16s(&config->wFlags);
2445         cpu_to_be16s(&config->wBaudRate);
2446
2447         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2448                                 (__u8)(UMPM_UART1_PORT + port_number),
2449                                 0, (__u8 *)config, sizeof(*config));
2450         if (status)
2451                 dbg("%s - error %d when trying to write config to device",
2452                      __func__, status);
2453         kfree(config);
2454         return;
2455 }
2456
2457 static void edge_set_termios(struct tty_struct *tty,
2458                 struct usb_serial_port *port, struct ktermios *old_termios)
2459 {
2460         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2461         unsigned int cflag;
2462
2463         cflag = tty->termios->c_cflag;
2464
2465         dbg("%s - clfag %08x iflag %08x", __func__,
2466             tty->termios->c_cflag, tty->termios->c_iflag);
2467         dbg("%s - old clfag %08x old iflag %08x", __func__,
2468             old_termios->c_cflag, old_termios->c_iflag);
2469         dbg("%s - port %d", __func__, port->number);
2470
2471         if (edge_port == NULL)
2472                 return;
2473         /* change the port settings to the new ones specified */
2474         change_port_settings(tty, edge_port, old_termios);
2475         return;
2476 }
2477
2478 static int edge_tiocmset(struct tty_struct *tty, struct file *file,
2479                                         unsigned int set, unsigned int clear)
2480 {
2481         struct usb_serial_port *port = tty->driver_data;
2482         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2483         unsigned int mcr;
2484         unsigned long flags;
2485
2486         dbg("%s - port %d", __func__, port->number);
2487
2488         spin_lock_irqsave(&edge_port->ep_lock, flags);
2489         mcr = edge_port->shadow_mcr;
2490         if (set & TIOCM_RTS)
2491                 mcr |= MCR_RTS;
2492         if (set & TIOCM_DTR)
2493                 mcr |= MCR_DTR;
2494         if (set & TIOCM_LOOP)
2495                 mcr |= MCR_LOOPBACK;
2496
2497         if (clear & TIOCM_RTS)
2498                 mcr &= ~MCR_RTS;
2499         if (clear & TIOCM_DTR)
2500                 mcr &= ~MCR_DTR;
2501         if (clear & TIOCM_LOOP)
2502                 mcr &= ~MCR_LOOPBACK;
2503
2504         edge_port->shadow_mcr = mcr;
2505         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2506
2507         restore_mcr(edge_port, mcr);
2508         return 0;
2509 }
2510
2511 static int edge_tiocmget(struct tty_struct *tty, struct file *file)
2512 {
2513         struct usb_serial_port *port = tty->driver_data;
2514         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2515         unsigned int result = 0;
2516         unsigned int msr;
2517         unsigned int mcr;
2518         unsigned long flags;
2519
2520         dbg("%s - port %d", __func__, port->number);
2521
2522         spin_lock_irqsave(&edge_port->ep_lock, flags);
2523
2524         msr = edge_port->shadow_msr;
2525         mcr = edge_port->shadow_mcr;
2526         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2527                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2528                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2529                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2530                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2531                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2532
2533
2534         dbg("%s -- %x", __func__, result);
2535         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2536
2537         return result;
2538 }
2539
2540 static int get_serial_info(struct edgeport_port *edge_port,
2541                                 struct serial_struct __user *retinfo)
2542 {
2543         struct serial_struct tmp;
2544
2545         if (!retinfo)
2546                 return -EFAULT;
2547
2548         memset(&tmp, 0, sizeof(tmp));
2549
2550         tmp.type                = PORT_16550A;
2551         tmp.line                = edge_port->port->serial->minor;
2552         tmp.port                = edge_port->port->number;
2553         tmp.irq                 = 0;
2554         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2555         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2556         tmp.baud_base           = 9600;
2557         tmp.close_delay         = 5*HZ;
2558         tmp.closing_wait        = closing_wait;
2559
2560         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2561                 return -EFAULT;
2562         return 0;
2563 }
2564
2565 static int edge_ioctl(struct tty_struct *tty, struct file *file,
2566                                         unsigned int cmd, unsigned long arg)
2567 {
2568         struct usb_serial_port *port = tty->driver_data;
2569         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2570         struct async_icount cnow;
2571         struct async_icount cprev;
2572
2573         dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2574
2575         switch (cmd) {
2576         case TIOCGSERIAL:
2577                 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2578                 return get_serial_info(edge_port,
2579                                 (struct serial_struct __user *) arg);
2580         case TIOCMIWAIT:
2581                 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2582                 cprev = edge_port->icount;
2583                 while (1) {
2584                         interruptible_sleep_on(&edge_port->delta_msr_wait);
2585                         /* see if a signal did it */
2586                         if (signal_pending(current))
2587                                 return -ERESTARTSYS;
2588                         cnow = edge_port->icount;
2589                         if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2590                             cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2591                                 return -EIO; /* no change => error */
2592                         if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2593                             ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2594                             ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2595                             ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
2596                                 return 0;
2597                         }
2598                         cprev = cnow;
2599                 }
2600                 /* not reached */
2601                 break;
2602         case TIOCGICOUNT:
2603                 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__,
2604                      port->number, edge_port->icount.rx, edge_port->icount.tx);
2605                 if (copy_to_user((void __user *)arg, &edge_port->icount,
2606                                 sizeof(edge_port->icount)))
2607                         return -EFAULT;
2608                 return 0;
2609         }
2610         return -ENOIOCTLCMD;
2611 }
2612
2613 static void edge_break(struct tty_struct *tty, int break_state)
2614 {
2615         struct usb_serial_port *port = tty->driver_data;
2616         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2617         int status;
2618         int bv = 0;     /* Off */
2619
2620         dbg("%s - state = %d", __func__, break_state);
2621
2622         /* chase the port close */
2623         chase_port(edge_port, 0, 0);
2624
2625         if (break_state == -1)
2626                 bv = 1; /* On */
2627         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2628         if (status)
2629                 dbg("%s - error %d sending break set/clear command.",
2630                      __func__, status);
2631 }
2632
2633 static int edge_startup(struct usb_serial *serial)
2634 {
2635         struct edgeport_serial *edge_serial;
2636         struct edgeport_port *edge_port;
2637         struct usb_device *dev;
2638         int status;
2639         int i;
2640
2641         dev = serial->dev;
2642
2643         /* create our private serial structure */
2644         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2645         if (edge_serial == NULL) {
2646                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2647                 return -ENOMEM;
2648         }
2649         mutex_init(&edge_serial->es_lock);
2650         edge_serial->serial = serial;
2651         usb_set_serial_data(serial, edge_serial);
2652
2653         status = download_fw(edge_serial);
2654         if (status) {
2655                 kfree(edge_serial);
2656                 return status;
2657         }
2658
2659         /* set up our port private structures */
2660         for (i = 0; i < serial->num_ports; ++i) {
2661                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2662                 if (edge_port == NULL) {
2663                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2664                                                                 __func__);
2665                         goto cleanup;
2666                 }
2667                 spin_lock_init(&edge_port->ep_lock);
2668                 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2669                 if (edge_port->ep_out_buf == NULL) {
2670                         dev_err(&serial->dev->dev, "%s - Out of memory\n",
2671                                                                 __func__);
2672                         kfree(edge_port);
2673                         goto cleanup;
2674                 }
2675                 edge_port->port = serial->port[i];
2676                 edge_port->edge_serial = edge_serial;
2677                 usb_set_serial_port_data(serial->port[i], edge_port);
2678                 edge_port->bUartMode = default_uart_mode;
2679         }
2680
2681         return 0;
2682
2683 cleanup:
2684         for (--i; i >= 0; --i) {
2685                 edge_port = usb_get_serial_port_data(serial->port[i]);
2686                 edge_buf_free(edge_port->ep_out_buf);
2687                 kfree(edge_port);
2688                 usb_set_serial_port_data(serial->port[i], NULL);
2689         }
2690         kfree(edge_serial);
2691         usb_set_serial_data(serial, NULL);
2692         return -ENOMEM;
2693 }
2694
2695 static void edge_disconnect(struct usb_serial *serial)
2696 {
2697         int i;
2698         struct edgeport_port *edge_port;
2699
2700         dbg("%s", __func__);
2701
2702         for (i = 0; i < serial->num_ports; ++i) {
2703                 edge_port = usb_get_serial_port_data(serial->port[i]);
2704                 edge_remove_sysfs_attrs(edge_port->port);
2705         }
2706 }
2707
2708 static void edge_release(struct usb_serial *serial)
2709 {
2710         int i;
2711         struct edgeport_port *edge_port;
2712
2713         dbg("%s", __func__);
2714
2715         for (i = 0; i < serial->num_ports; ++i) {
2716                 edge_port = usb_get_serial_port_data(serial->port[i]);
2717                 edge_buf_free(edge_port->ep_out_buf);
2718                 kfree(edge_port);
2719         }
2720         kfree(usb_get_serial_data(serial));
2721 }
2722
2723
2724 /* Sysfs Attributes */
2725
2726 static ssize_t show_uart_mode(struct device *dev,
2727         struct device_attribute *attr, char *buf)
2728 {
2729         struct usb_serial_port *port = to_usb_serial_port(dev);
2730         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2731
2732         return sprintf(buf, "%d\n", edge_port->bUartMode);
2733 }
2734
2735 static ssize_t store_uart_mode(struct device *dev,
2736         struct device_attribute *attr, const char *valbuf, size_t count)
2737 {
2738         struct usb_serial_port *port = to_usb_serial_port(dev);
2739         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2740         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2741
2742         dbg("%s: setting uart_mode = %d", __func__, v);
2743
2744         if (v < 256)
2745                 edge_port->bUartMode = v;
2746         else
2747                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2748
2749         return count;
2750 }
2751
2752 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode,
2753                                                         store_uart_mode);
2754
2755 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2756 {
2757         return device_create_file(&port->dev, &dev_attr_uart_mode);
2758 }
2759
2760 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2761 {
2762         device_remove_file(&port->dev, &dev_attr_uart_mode);
2763         return 0;
2764 }
2765
2766
2767 /* Circular Buffer */
2768
2769 /*
2770  * edge_buf_alloc
2771  *
2772  * Allocate a circular buffer and all associated memory.
2773  */
2774
2775 static struct edge_buf *edge_buf_alloc(unsigned int size)
2776 {
2777         struct edge_buf *eb;
2778
2779
2780         if (size == 0)
2781                 return NULL;
2782
2783         eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2784         if (eb == NULL)
2785                 return NULL;
2786
2787         eb->buf_buf = kmalloc(size, GFP_KERNEL);
2788         if (eb->buf_buf == NULL) {
2789                 kfree(eb);
2790                 return NULL;
2791         }
2792
2793         eb->buf_size = size;
2794         eb->buf_get = eb->buf_put = eb->buf_buf;
2795
2796         return eb;
2797 }
2798
2799
2800 /*
2801  * edge_buf_free
2802  *
2803  * Free the buffer and all associated memory.
2804  */
2805
2806 static void edge_buf_free(struct edge_buf *eb)
2807 {
2808         if (eb) {
2809                 kfree(eb->buf_buf);
2810                 kfree(eb);
2811         }
2812 }
2813
2814
2815 /*
2816  * edge_buf_clear
2817  *
2818  * Clear out all data in the circular buffer.
2819  */
2820
2821 static void edge_buf_clear(struct edge_buf *eb)
2822 {
2823         if (eb != NULL)
2824                 eb->buf_get = eb->buf_put;
2825         /* equivalent to a get of all data available */
2826 }
2827
2828
2829 /*
2830  * edge_buf_data_avail
2831  *
2832  * Return the number of bytes of data available in the circular
2833  * buffer.
2834  */
2835
2836 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2837 {
2838         if (eb == NULL)
2839                 return 0;
2840         return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2841 }
2842
2843
2844 /*
2845  * edge_buf_space_avail
2846  *
2847  * Return the number of bytes of space available in the circular
2848  * buffer.
2849  */
2850
2851 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2852 {
2853         if (eb == NULL)
2854                 return 0;
2855         return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2856 }
2857
2858
2859 /*
2860  * edge_buf_put
2861  *
2862  * Copy data data from a user buffer and put it into the circular buffer.
2863  * Restrict to the amount of space available.
2864  *
2865  * Return the number of bytes copied.
2866  */
2867
2868 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2869         unsigned int count)
2870 {
2871         unsigned int len;
2872
2873
2874         if (eb == NULL)
2875                 return 0;
2876
2877         len  = edge_buf_space_avail(eb);
2878         if (count > len)
2879                 count = len;
2880
2881         if (count == 0)
2882                 return 0;
2883
2884         len = eb->buf_buf + eb->buf_size - eb->buf_put;
2885         if (count > len) {
2886                 memcpy(eb->buf_put, buf, len);
2887                 memcpy(eb->buf_buf, buf+len, count - len);
2888                 eb->buf_put = eb->buf_buf + count - len;
2889         } else {
2890                 memcpy(eb->buf_put, buf, count);
2891                 if (count < len)
2892                         eb->buf_put += count;
2893                 else /* count == len */
2894                         eb->buf_put = eb->buf_buf;
2895         }
2896
2897         return count;
2898 }
2899
2900
2901 /*
2902  * edge_buf_get
2903  *
2904  * Get data from the circular buffer and copy to the given buffer.
2905  * Restrict to the amount of data available.
2906  *
2907  * Return the number of bytes copied.
2908  */
2909
2910 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2911         unsigned int count)
2912 {
2913         unsigned int len;
2914
2915
2916         if (eb == NULL)
2917                 return 0;
2918
2919         len = edge_buf_data_avail(eb);
2920         if (count > len)
2921                 count = len;
2922
2923         if (count == 0)
2924                 return 0;
2925
2926         len = eb->buf_buf + eb->buf_size - eb->buf_get;
2927         if (count > len) {
2928                 memcpy(buf, eb->buf_get, len);
2929                 memcpy(buf+len, eb->buf_buf, count - len);
2930                 eb->buf_get = eb->buf_buf + count - len;
2931         } else {
2932                 memcpy(buf, eb->buf_get, count);
2933                 if (count < len)
2934                         eb->buf_get += count;
2935                 else /* count == len */
2936                         eb->buf_get = eb->buf_buf;
2937         }
2938
2939         return count;
2940 }
2941
2942
2943 static struct usb_serial_driver edgeport_1port_device = {
2944         .driver = {
2945                 .owner          = THIS_MODULE,
2946                 .name           = "edgeport_ti_1",
2947         },
2948         .description            = "Edgeport TI 1 port adapter",
2949         .usb_driver             = &io_driver,
2950         .id_table               = edgeport_1port_id_table,
2951         .num_ports              = 1,
2952         .open                   = edge_open,
2953         .close                  = edge_close,
2954         .throttle               = edge_throttle,
2955         .unthrottle             = edge_unthrottle,
2956         .attach                 = edge_startup,
2957         .disconnect             = edge_disconnect,
2958         .release                = edge_release,
2959         .port_probe             = edge_create_sysfs_attrs,
2960         .ioctl                  = edge_ioctl,
2961         .set_termios            = edge_set_termios,
2962         .tiocmget               = edge_tiocmget,
2963         .tiocmset               = edge_tiocmset,
2964         .write                  = edge_write,
2965         .write_room             = edge_write_room,
2966         .chars_in_buffer        = edge_chars_in_buffer,
2967         .break_ctl              = edge_break,
2968         .read_int_callback      = edge_interrupt_callback,
2969         .read_bulk_callback     = edge_bulk_in_callback,
2970         .write_bulk_callback    = edge_bulk_out_callback,
2971 };
2972
2973 static struct usb_serial_driver edgeport_2port_device = {
2974         .driver = {
2975                 .owner          = THIS_MODULE,
2976                 .name           = "edgeport_ti_2",
2977         },
2978         .description            = "Edgeport TI 2 port adapter",
2979         .usb_driver             = &io_driver,
2980         .id_table               = edgeport_2port_id_table,
2981         .num_ports              = 2,
2982         .open                   = edge_open,
2983         .close                  = edge_close,
2984         .throttle               = edge_throttle,
2985         .unthrottle             = edge_unthrottle,
2986         .attach                 = edge_startup,
2987         .disconnect             = edge_disconnect,
2988         .release                = edge_release,
2989         .port_probe             = edge_create_sysfs_attrs,
2990         .ioctl                  = edge_ioctl,
2991         .set_termios            = edge_set_termios,
2992         .tiocmget               = edge_tiocmget,
2993         .tiocmset               = edge_tiocmset,
2994         .write                  = edge_write,
2995         .write_room             = edge_write_room,
2996         .chars_in_buffer        = edge_chars_in_buffer,
2997         .break_ctl              = edge_break,
2998         .read_int_callback      = edge_interrupt_callback,
2999         .read_bulk_callback     = edge_bulk_in_callback,
3000         .write_bulk_callback    = edge_bulk_out_callback,
3001 };
3002
3003
3004 static int __init edgeport_init(void)
3005 {
3006         int retval;
3007         retval = usb_serial_register(&edgeport_1port_device);
3008         if (retval)
3009                 goto failed_1port_device_register;
3010         retval = usb_serial_register(&edgeport_2port_device);
3011         if (retval)
3012                 goto failed_2port_device_register;
3013         retval = usb_register(&io_driver);
3014         if (retval)
3015                 goto failed_usb_register;
3016         printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
3017                DRIVER_DESC "\n");
3018         return 0;
3019 failed_usb_register:
3020         usb_serial_deregister(&edgeport_2port_device);
3021 failed_2port_device_register:
3022         usb_serial_deregister(&edgeport_1port_device);
3023 failed_1port_device_register:
3024         return retval;
3025 }
3026
3027 static void __exit edgeport_exit(void)
3028 {
3029         usb_deregister(&io_driver);
3030         usb_serial_deregister(&edgeport_1port_device);
3031         usb_serial_deregister(&edgeport_2port_device);
3032 }
3033
3034 module_init(edgeport_init);
3035 module_exit(edgeport_exit);
3036
3037 /* Module information */
3038 MODULE_AUTHOR(DRIVER_AUTHOR);
3039 MODULE_DESCRIPTION(DRIVER_DESC);
3040 MODULE_LICENSE("GPL");
3041 MODULE_FIRMWARE("edgeport/down3.bin");
3042
3043 module_param(debug, bool, S_IRUGO | S_IWUSR);
3044 MODULE_PARM_DESC(debug, "Debug enabled or not");
3045
3046 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3047 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3048
3049 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3050 MODULE_PARM_DESC(ignore_cpu_rev,
3051                         "Ignore the cpu revision when connecting to a device");
3052
3053 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3054 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");