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