drivers/usb/serial/io_ti.c

   1 /*
   2  * Edgeport USB Serial Converter driver
   3  *
   4  * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  *
   7  *      This program is free software; you can redistribute it and/or modify
   8  *      it under the terms of the GNU General Public License as published by
   9  *      the Free Software Foundation; either version 2 of the License, or
  10  *      (at your option) any later version.
  11  *
  12  * Supports the following devices:
  13  *      EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
  14  *
  15  * For questions or problems with this driver, contact Inside Out
  16  * Networks technical support, or Peter Berger <pberger@brimson.com>,
  17  * or Al Borchers <alborchers@steinerpoint.com>.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/jiffies.h>
  22 #include <linux/errno.h>
  23 #include <linux/slab.h>
  24 #include <linux/tty.h>
  25 #include <linux/tty_driver.h>
  26 #include <linux/tty_flip.h>
  27 #include <linux/module.h>
  28 #include <linux/spinlock.h>
  29 #include <linux/mutex.h>
  30 #include <linux/serial.h>
  31 #include <linux/swab.h>
  32 #include <linux/kfifo.h>
  33 #include <linux/ioctl.h>
  34 #include <linux/firmware.h>
  35 #include <linux/uaccess.h>
  36 #include <linux/usb.h>
  37 #include <linux/usb/serial.h>
  38
  39 #include "io_16654.h"
  40 #include "io_usbvend.h"
  41 #include "io_ti.h"
  42
  43 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
  44 #define DRIVER_DESC "Edgeport USB Serial Driver"
  45
  46 #define EPROM_PAGE_SIZE         64
  47
  48
  49 /* different hardware types */
  50 #define HARDWARE_TYPE_930       0
  51 #define HARDWARE_TYPE_TIUMP     1
  52
  53 /* IOCTL_PRIVATE_TI_GET_MODE Definitions */
  54 #define TI_MODE_CONFIGURING     0   /* Device has not entered start device */
  55 #define TI_MODE_BOOT            1   /* Staying in boot mode                */
  56 #define TI_MODE_DOWNLOAD        2   /* Made it to download mode            */
  57 #define TI_MODE_TRANSITIONING   3   /* Currently in boot mode but
  58                                        transitioning to download mode      */
  59
  60 /* read urb state */
  61 #define EDGE_READ_URB_RUNNING   0
  62 #define EDGE_READ_URB_STOPPING  1
  63 #define EDGE_READ_URB_STOPPED   2
  64
  65 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
  66
  67
  68 /* Product information read from the Edgeport */
  69 struct product_info {
  70         int     TiMode;                 /* Current TI Mode  */
  71         __u8    hardware_type;          /* Type of hardware */
  72 } __attribute__((packed));
  73
  74 struct edgeport_port {
  75         __u16 uart_base;
  76         __u16 dma_address;
  77         __u8 shadow_msr;
  78         __u8 shadow_mcr;
  79         __u8 shadow_lsr;
  80         __u8 lsr_mask;
  81         __u32 ump_read_timeout;         /* Number of milliseconds the UMP will
  82                                            wait without data before completing
  83                                            a read short */
  84         int baud_rate;
  85         int close_pending;
  86         int lsr_event;
  87
  88         struct edgeport_serial  *edge_serial;
  89         struct usb_serial_port  *port;
  90         __u8 bUartMode;         /* Port type, 0: RS232, etc. */
  91         spinlock_t ep_lock;
  92         int ep_read_urb_state;
  93         int ep_write_urb_in_use;
  94 };
  95
  96 struct edgeport_serial {
  97         struct product_info product_info;
  98         u8 TI_I2C_Type;                 /* Type of I2C in UMP */
  99         u8 TiReadI2C;                   /* Set to TRUE if we have read the
 100                                            I2c in Boot Mode */
 101         struct mutex es_lock;
 102         int num_ports_open;
 103         struct usb_serial *serial;
 104 };
 105
 106
 107 /* Devices that this driver supports */
 108 static const struct usb_device_id edgeport_1port_id_table[] = {
 109         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 110         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 111         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 112         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 113         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 114         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 115         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 116         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 117         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 118         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 119         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 120         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 121         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 122         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 123         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 124         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 125         { }
 126 };
 127
 128 static const struct usb_device_id edgeport_2port_id_table[] = {
 129         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 130         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 131         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 132         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 133         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 134         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 135         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 136         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 137         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 138         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 139         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 140         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 141         /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
 142         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 143         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 147         { }
 148 };
 149
 150 /* Devices that this driver supports */
 151 static const struct usb_device_id id_table_combined[] = {
 152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
 153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
 154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
 155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
 156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
 157         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
 158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
 159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
 160         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
 161         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
 162         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
 163         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
 164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
 165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
 166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
 167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
 168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
 169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
 170         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
 171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
 172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
 173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
 174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
 175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
 176         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
 177         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
 178         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
 179         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
 180         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
 181         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
 182         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
 183         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
 184         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
 185         { }
 186 };
 187
 188 MODULE_DEVICE_TABLE(usb, id_table_combined);
 189
 190 static unsigned char OperationalMajorVersion;
 191 static unsigned char OperationalMinorVersion;
 192 static unsigned short OperationalBuildNumber;
 193
 194 static int closing_wait = EDGE_CLOSING_WAIT;
 195 static bool ignore_cpu_rev;
 196 static int default_uart_mode;           /* RS232 */
 197
 198 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
 199                 int length);
 200
 201 static void stop_read(struct edgeport_port *edge_port);
 202 static int restart_read(struct edgeport_port *edge_port);
 203
 204 static void edge_set_termios(struct tty_struct *tty,
 205                 struct usb_serial_port *port, struct ktermios *old_termios);
 206 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty);
 207
 208 /* sysfs attributes */
 209 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
 210 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
 211
 212
 213 static int ti_vread_sync(struct usb_device *dev, __u8 request,
 214                                 __u16 value, __u16 index, u8 *data, int size)
 215 {
 216         int status;
 217
 218         status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request,
 219                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN),
 220                         value, index, data, size, 1000);
 221         if (status < 0)
 222                 return status;
 223         if (status != size) {
 224                 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
 225                         __func__, size, status);
 226                 return -ECOMM;
 227         }
 228         return 0;
 229 }
 230
 231 static int ti_vsend_sync(struct usb_device *dev, __u8 request,
 232                                 __u16 value, __u16 index, u8 *data, int size)
 233 {
 234         int status;
 235
 236         status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request,
 237                         (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT),
 238                         value, index, data, size, 1000);
 239         if (status < 0)
 240                 return status;
 241         if (status != size) {
 242                 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n",
 243                         __func__, size, status);
 244                 return -ECOMM;
 245         }
 246         return 0;
 247 }
 248
 249 static int send_cmd(struct usb_device *dev, __u8 command,
 250                                 __u8 moduleid, __u16 value, u8 *data,
 251                                 int size)
 252 {
 253         return ti_vsend_sync(dev, command, value, moduleid, data, size);
 254 }
 255
 256 /* clear tx/rx buffers and fifo in TI UMP */
 257 static int purge_port(struct usb_serial_port *port, __u16 mask)
 258 {
 259         int port_number = port->port_number;
 260
 261         dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask);
 262
 263         return send_cmd(port->serial->dev,
 264                                         UMPC_PURGE_PORT,
 265                                         (__u8)(UMPM_UART1_PORT + port_number),
 266                                         mask,
 267                                         NULL,
 268                                         0);
 269 }
 270
 271 /**
 272  * read_download_mem - Read edgeport memory from TI chip
 273  * @dev: usb device pointer
 274  * @start_address: Device CPU address at which to read
 275  * @length: Length of above data
 276  * @address_type: Can read both XDATA and I2C
 277  * @buffer: pointer to input data buffer
 278  */
 279 static int read_download_mem(struct usb_device *dev, int start_address,
 280                                 int length, __u8 address_type, __u8 *buffer)
 281 {
 282         int status = 0;
 283         __u8 read_length;
 284         u16 be_start_address;
 285
 286         dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length);
 287
 288         /* Read in blocks of 64 bytes
 289          * (TI firmware can't handle more than 64 byte reads)
 290          */
 291         while (length) {
 292                 if (length > 64)
 293                         read_length = 64;
 294                 else
 295                         read_length = (__u8)length;
 296
 297                 if (read_length > 1) {
 298                         dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length);
 299                 }
 300                 /*
 301                  * NOTE: Must use swab as wIndex is sent in little-endian
 302                  *       byte order regardless of host byte order.
 303                  */
 304                 be_start_address = swab16((u16)start_address);
 305                 status = ti_vread_sync(dev, UMPC_MEMORY_READ,
 306                                         (__u16)address_type,
 307                                         be_start_address,
 308                                         buffer, read_length);
 309
 310                 if (status) {
 311                         dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status);
 312                         return status;
 313                 }
 314
 315                 if (read_length > 1)
 316                         usb_serial_debug_data(&dev->dev, __func__, read_length, buffer);
 317
 318                 /* Update pointers/length */
 319                 start_address += read_length;
 320                 buffer += read_length;
 321                 length -= read_length;
 322         }
 323
 324         return status;
 325 }
 326
 327 static int read_ram(struct usb_device *dev, int start_address,
 328                                                 int length, __u8 *buffer)
 329 {
 330         return read_download_mem(dev, start_address, length,
 331                                         DTK_ADDR_SPACE_XDATA, buffer);
 332 }
 333
 334 /* Read edgeport memory to a given block */
 335 static int read_boot_mem(struct edgeport_serial *serial,
 336                                 int start_address, int length, __u8 *buffer)
 337 {
 338         int status = 0;
 339         int i;
 340
 341         for (i = 0; i < length; i++) {
 342                 status = ti_vread_sync(serial->serial->dev,
 343                                 UMPC_MEMORY_READ, serial->TI_I2C_Type,
 344                                 (__u16)(start_address+i), &buffer[i], 0x01);
 345                 if (status) {
 346                         dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status);
 347                         return status;
 348                 }
 349         }
 350
 351         dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n",
 352                 __func__, start_address, length);
 353         usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
 354
 355         serial->TiReadI2C = 1;
 356
 357         return status;
 358 }
 359
 360 /* Write given block to TI EPROM memory */
 361 static int write_boot_mem(struct edgeport_serial *serial,
 362                                 int start_address, int length, __u8 *buffer)
 363 {
 364         int status = 0;
 365         int i;
 366         u8 *temp;
 367
 368         /* Must do a read before write */
 369         if (!serial->TiReadI2C) {
 370                 temp = kmalloc(1, GFP_KERNEL);
 371                 if (!temp)
 372                         return -ENOMEM;
 373
 374                 status = read_boot_mem(serial, 0, 1, temp);
 375                 kfree(temp);
 376                 if (status)
 377                         return status;
 378         }
 379
 380         for (i = 0; i < length; ++i) {
 381                 status = ti_vsend_sync(serial->serial->dev,
 382                                 UMPC_MEMORY_WRITE, buffer[i],
 383                                 (__u16)(i + start_address), NULL, 0);
 384                 if (status)
 385                         return status;
 386         }
 387
 388         dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
 389         usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
 390
 391         return status;
 392 }
 393
 394
 395 /* Write edgeport I2C memory to TI chip */
 396 static int write_i2c_mem(struct edgeport_serial *serial,
 397                 int start_address, int length, __u8 address_type, __u8 *buffer)
 398 {
 399         struct device *dev = &serial->serial->dev->dev;
 400         int status = 0;
 401         int write_length;
 402         u16 be_start_address;
 403
 404         /* We can only send a maximum of 1 aligned byte page at a time */
 405
 406         /* calculate the number of bytes left in the first page */
 407         write_length = EPROM_PAGE_SIZE -
 408                                 (start_address & (EPROM_PAGE_SIZE - 1));
 409
 410         if (write_length > length)
 411                 write_length = length;
 412
 413         dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
 414                 __func__, start_address, write_length);
 415         usb_serial_debug_data(dev, __func__, write_length, buffer);
 416
 417         /*
 418          * Write first page.
 419          *
 420          * NOTE: Must use swab as wIndex is sent in little-endian byte order
 421          *       regardless of host byte order.
 422          */
 423         be_start_address = swab16((u16)start_address);
 424         status = ti_vsend_sync(serial->serial->dev,
 425                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 426                                 be_start_address,
 427                                 buffer, write_length);
 428         if (status) {
 429                 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
 430                 return status;
 431         }
 432
 433         length          -= write_length;
 434         start_address   += write_length;
 435         buffer          += write_length;
 436
 437         /* We should be aligned now -- can write
 438            max page size bytes at a time */
 439         while (length) {
 440                 if (length > EPROM_PAGE_SIZE)
 441                         write_length = EPROM_PAGE_SIZE;
 442                 else
 443                         write_length = length;
 444
 445                 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
 446                         __func__, start_address, write_length);
 447                 usb_serial_debug_data(dev, __func__, write_length, buffer);
 448
 449                 /*
 450                  * Write next page.
 451                  *
 452                  * NOTE: Must use swab as wIndex is sent in little-endian byte
 453                  *       order regardless of host byte order.
 454                  */
 455                 be_start_address = swab16((u16)start_address);
 456                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 457                                 (__u16)address_type,
 458                                 be_start_address,
 459                                 buffer, write_length);
 460                 if (status) {
 461                         dev_err(dev, "%s - ERROR %d\n", __func__, status);
 462                         return status;
 463                 }
 464
 465                 length          -= write_length;
 466                 start_address   += write_length;
 467                 buffer          += write_length;
 468         }
 469         return status;
 470 }
 471
 472 /* Examine the UMP DMA registers and LSR
 473  *
 474  * Check the MSBit of the X and Y DMA byte count registers.
 475  * A zero in this bit indicates that the TX DMA buffers are empty
 476  * then check the TX Empty bit in the UART.
 477  */
 478 static int tx_active(struct edgeport_port *port)
 479 {
 480         int status;
 481         struct out_endpoint_desc_block *oedb;
 482         __u8 *lsr;
 483         int bytes_left = 0;
 484
 485         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 486         if (!oedb)
 487                 return -ENOMEM;
 488
 489         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 490                                            as not all platforms can do DMA
 491                                            from stack */
 492         if (!lsr) {
 493                 kfree(oedb);
 494                 return -ENOMEM;
 495         }
 496         /* Read the DMA Count Registers */
 497         status = read_ram(port->port->serial->dev, port->dma_address,
 498                                                 sizeof(*oedb), (void *)oedb);
 499         if (status)
 500                 goto exit_is_tx_active;
 501
 502         dev_dbg(&port->port->dev, "%s - XByteCount    0x%X\n", __func__, oedb->XByteCount);
 503
 504         /* and the LSR */
 505         status = read_ram(port->port->serial->dev,
 506                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 507
 508         if (status)
 509                 goto exit_is_tx_active;
 510         dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
 511
 512         /* If either buffer has data or we are transmitting then return TRUE */
 513         if ((oedb->XByteCount & 0x80) != 0)
 514                 bytes_left += 64;
 515
 516         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 517                 bytes_left += 1;
 518
 519         /* We return Not Active if we get any kind of error */
 520 exit_is_tx_active:
 521         dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
 522
 523         kfree(lsr);
 524         kfree(oedb);
 525         return bytes_left;
 526 }
 527
 528 static int choose_config(struct usb_device *dev)
 529 {
 530         /*
 531          * There may be multiple configurations on this device, in which case
 532          * we would need to read and parse all of them to find out which one
 533          * we want. However, we just support one config at this point,
 534          * configuration # 1, which is Config Descriptor 0.
 535          */
 536
 537         dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
 538                 __func__, dev->config->desc.bNumInterfaces);
 539         dev_dbg(&dev->dev, "%s - MAX Power            = %d\n",
 540                 __func__, dev->config->desc.bMaxPower * 2);
 541
 542         if (dev->config->desc.bNumInterfaces != 1) {
 543                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
 544                 return -ENODEV;
 545         }
 546
 547         return 0;
 548 }
 549
 550 static int read_rom(struct edgeport_serial *serial,
 551                                 int start_address, int length, __u8 *buffer)
 552 {
 553         int status;
 554
 555         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 556                 status = read_download_mem(serial->serial->dev,
 557                                                start_address,
 558                                                length,
 559                                                serial->TI_I2C_Type,
 560                                                buffer);
 561         } else {
 562                 status = read_boot_mem(serial, start_address, length,
 563                                                                 buffer);
 564         }
 565         return status;
 566 }
 567
 568 static int write_rom(struct edgeport_serial *serial, int start_address,
 569                                                 int length, __u8 *buffer)
 570 {
 571         if (serial->product_info.TiMode == TI_MODE_BOOT)
 572                 return write_boot_mem(serial, start_address, length,
 573                                                                 buffer);
 574
 575         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 576                 return write_i2c_mem(serial, start_address, length,
 577                                                 serial->TI_I2C_Type, buffer);
 578         return -EINVAL;
 579 }
 580
 581
 582
 583 /* Read a descriptor header from I2C based on type */
 584 static int get_descriptor_addr(struct edgeport_serial *serial,
 585                                 int desc_type, struct ti_i2c_desc *rom_desc)
 586 {
 587         int start_address;
 588         int status;
 589
 590         /* Search for requested descriptor in I2C */
 591         start_address = 2;
 592         do {
 593                 status = read_rom(serial,
 594                                    start_address,
 595                                    sizeof(struct ti_i2c_desc),
 596                                    (__u8 *)rom_desc);
 597                 if (status)
 598                         return 0;
 599
 600                 if (rom_desc->Type == desc_type)
 601                         return start_address;
 602
 603                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 604                                                 le16_to_cpu(rom_desc->Size);
 605
 606         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 607
 608         return 0;
 609 }
 610
 611 /* Validate descriptor checksum */
 612 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 613 {
 614         __u16 i;
 615         __u8 cs = 0;
 616
 617         for (i = 0; i < le16_to_cpu(rom_desc->Size); i++)
 618                 cs = (__u8)(cs + buffer[i]);
 619
 620         if (cs != rom_desc->CheckSum) {
 621                 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 622                 return -EINVAL;
 623         }
 624         return 0;
 625 }
 626
 627 /* Make sure that the I2C image is good */
 628 static int check_i2c_image(struct edgeport_serial *serial)
 629 {
 630         struct device *dev = &serial->serial->dev->dev;
 631         int status = 0;
 632         struct ti_i2c_desc *rom_desc;
 633         int start_address = 2;
 634         __u8 *buffer;
 635         __u16 ttype;
 636
 637         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 638         if (!rom_desc)
 639                 return -ENOMEM;
 640
 641         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 642         if (!buffer) {
 643                 kfree(rom_desc);
 644                 return -ENOMEM;
 645         }
 646
 647         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 648         status = read_rom(serial, 0, 1, buffer);
 649         if (status)
 650                 goto out;
 651
 652         if (*buffer != UMP5152 && *buffer != UMP3410) {
 653                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 654                 status = -ENODEV;
 655                 goto out;
 656         }
 657
 658         do {
 659                 /* Validate the I2C */
 660                 status = read_rom(serial,
 661                                 start_address,
 662                                 sizeof(struct ti_i2c_desc),
 663                                 (__u8 *)rom_desc);
 664                 if (status)
 665                         break;
 666
 667                 if ((start_address + sizeof(struct ti_i2c_desc) +
 668                         le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) {
 669                         status = -ENODEV;
 670                         dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
 671                         break;
 672                 }
 673
 674                 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
 675
 676                 /* Skip type 2 record */
 677                 ttype = rom_desc->Type & 0x0f;
 678                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 679                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 680                         /* Read the descriptor data */
 681                         status = read_rom(serial, start_address +
 682                                                 sizeof(struct ti_i2c_desc),
 683                                                 le16_to_cpu(rom_desc->Size),
 684                                                 buffer);
 685                         if (status)
 686                                 break;
 687
 688                         status = valid_csum(rom_desc, buffer);
 689                         if (status)
 690                                 break;
 691                 }
 692                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 693                                                 le16_to_cpu(rom_desc->Size);
 694
 695         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 696                                 (start_address < TI_MAX_I2C_SIZE));
 697
 698         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 699                                 (start_address > TI_MAX_I2C_SIZE))
 700                 status = -ENODEV;
 701
 702 out:
 703         kfree(buffer);
 704         kfree(rom_desc);
 705         return status;
 706 }
 707
 708 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 709 {
 710         int status;
 711         int start_address;
 712         struct ti_i2c_desc *rom_desc;
 713         struct edge_ti_manuf_descriptor *desc;
 714         struct device *dev = &serial->serial->dev->dev;
 715
 716         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 717         if (!rom_desc)
 718                 return -ENOMEM;
 719
 720         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 721                                                                 rom_desc);
 722
 723         if (!start_address) {
 724                 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
 725                 status = -ENODEV;
 726                 goto exit;
 727         }
 728
 729         /* Read the descriptor data */
 730         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 731                                         le16_to_cpu(rom_desc->Size), buffer);
 732         if (status)
 733                 goto exit;
 734
 735         status = valid_csum(rom_desc, buffer);
 736
 737         desc = (struct edge_ti_manuf_descriptor *)buffer;
 738         dev_dbg(dev, "%s - IonConfig      0x%x\n", __func__, desc->IonConfig);
 739         dev_dbg(dev, "%s - Version          %d\n", __func__, desc->Version);
 740         dev_dbg(dev, "%s - Cpu/Board      0x%x\n", __func__, desc->CpuRev_BoardRev);
 741         dev_dbg(dev, "%s - NumPorts         %d\n", __func__, desc->NumPorts);
 742         dev_dbg(dev, "%s - NumVirtualPorts  %d\n", __func__, desc->NumVirtualPorts);
 743         dev_dbg(dev, "%s - TotalPorts       %d\n", __func__, desc->TotalPorts);
 744
 745 exit:
 746         kfree(rom_desc);
 747         return status;
 748 }
 749
 750 /* Build firmware header used for firmware update */
 751 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 752 {
 753         __u8 *buffer;
 754         int buffer_size;
 755         int i;
 756         int err;
 757         __u8 cs = 0;
 758         struct ti_i2c_desc *i2c_header;
 759         struct ti_i2c_image_header *img_header;
 760         struct ti_i2c_firmware_rec *firmware_rec;
 761         const struct firmware *fw;
 762         const char *fw_name = "edgeport/down3.bin";
 763
 764         /* In order to update the I2C firmware we must change the type 2 record
 765          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 766          * Then while in boot mode, the driver will download the latest
 767          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 768          * device comes back up in download mode the driver will cause the new
 769          * firmware to be copied from the UMP Ram to I2C and the firmware will
 770          * update the record type from 0xf2 to 0x02.
 771          */
 772
 773         /* Allocate a 15.5k buffer + 2 bytes for version number
 774          * (Firmware Record) */
 775         buffer_size = (((1024 * 16) - 512 ) +
 776                         sizeof(struct ti_i2c_firmware_rec));
 777
 778         buffer = kmalloc(buffer_size, GFP_KERNEL);
 779         if (!buffer)
 780                 return -ENOMEM;
 781
 782         // Set entire image of 0xffs
 783         memset(buffer, 0xff, buffer_size);
 784
 785         err = request_firmware(&fw, fw_name, dev);
 786         if (err) {
 787                 dev_err(dev, "Failed to load image \"%s\" err %d\n",
 788                         fw_name, err);
 789                 kfree(buffer);
 790                 return err;
 791         }
 792
 793         /* Save Download Version Number */
 794         OperationalMajorVersion = fw->data[0];
 795         OperationalMinorVersion = fw->data[1];
 796         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 797
 798         /* Copy version number into firmware record */
 799         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 800
 801         firmware_rec->Ver_Major = OperationalMajorVersion;
 802         firmware_rec->Ver_Minor = OperationalMinorVersion;
 803
 804         /* Pointer to fw_down memory image */
 805         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 806
 807         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 808                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 809                 le16_to_cpu(img_header->Length));
 810
 811         release_firmware(fw);
 812
 813         for (i=0; i < buffer_size; i++) {
 814                 cs = (__u8)(cs + buffer[i]);
 815         }
 816
 817         kfree(buffer);
 818
 819         /* Build new header */
 820         i2c_header =  (struct ti_i2c_desc *)header;
 821         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 822
 823         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 824         i2c_header->Size        = (__u16)buffer_size;
 825         i2c_header->CheckSum    = cs;
 826         firmware_rec->Ver_Major = OperationalMajorVersion;
 827         firmware_rec->Ver_Minor = OperationalMinorVersion;
 828
 829         return 0;
 830 }
 831
 832 /* Try to figure out what type of I2c we have */
 833 static int i2c_type_bootmode(struct edgeport_serial *serial)
 834 {
 835         struct device *dev = &serial->serial->dev->dev;
 836         int status;
 837         u8 *data;
 838
 839         data = kmalloc(1, GFP_KERNEL);
 840         if (!data)
 841                 return -ENOMEM;
 842
 843         /* Try to read type 2 */
 844         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 845                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 846         if (status)
 847                 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
 848         else
 849                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 850         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 851                 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
 852                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 853                 goto out;
 854         }
 855
 856         /* Try to read type 3 */
 857         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 858                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 859         if (status)
 860                 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
 861         else
 862                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 863         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 864                 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
 865                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 866                 goto out;
 867         }
 868
 869         dev_dbg(dev, "%s - Unknown\n", __func__);
 870         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 871         status = -ENODEV;
 872 out:
 873         kfree(data);
 874         return status;
 875 }
 876
 877 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 878                                                 int length, int *num_sent)
 879 {
 880         int status;
 881
 882         status = usb_bulk_msg(serial->dev,
 883                         usb_sndbulkpipe(serial->dev,
 884                                 serial->port[0]->bulk_out_endpointAddress),
 885                         buffer, length, num_sent, 1000);
 886         return status;
 887 }
 888
 889 /* Download given firmware image to the device (IN BOOT MODE) */
 890 static int download_code(struct edgeport_serial *serial, __u8 *image,
 891                                                         int image_length)
 892 {
 893         int status = 0;
 894         int pos;
 895         int transfer;
 896         int done;
 897
 898         /* Transfer firmware image */
 899         for (pos = 0; pos < image_length; ) {
 900                 /* Read the next buffer from file */
 901                 transfer = image_length - pos;
 902                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 903                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 904
 905                 /* Transfer data */
 906                 status = bulk_xfer(serial->serial, &image[pos],
 907                                                         transfer, &done);
 908                 if (status)
 909                         break;
 910                 /* Advance buffer pointer */
 911                 pos += done;
 912         }
 913
 914         return status;
 915 }
 916
 917 /* FIXME!!! */
 918 static int config_boot_dev(struct usb_device *dev)
 919 {
 920         return 0;
 921 }
 922
 923 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
 924 {
 925         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
 926 }
 927
 928 /**
 929  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 930  *
 931  * This routine downloads the main operating code into the TI5052, using the
 932  * boot code already burned into E2PROM or ROM.
 933  */
 934 static int download_fw(struct edgeport_serial *serial)
 935 {
 936         struct device *dev = &serial->serial->dev->dev;
 937         int status = 0;
 938         int start_address;
 939         struct edge_ti_manuf_descriptor *ti_manuf_desc;
 940         struct usb_interface_descriptor *interface;
 941         int download_cur_ver;
 942         int download_new_ver;
 943
 944         /* This routine is entered by both the BOOT mode and the Download mode
 945          * We can determine which code is running by the reading the config
 946          * descriptor and if we have only one bulk pipe it is in boot mode
 947          */
 948         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
 949
 950         /* Default to type 2 i2c */
 951         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 952
 953         status = choose_config(serial->serial->dev);
 954         if (status)
 955                 return status;
 956
 957         interface = &serial->serial->interface->cur_altsetting->desc;
 958         if (!interface) {
 959                 dev_err(dev, "%s - no interface set, error!\n", __func__);
 960                 return -ENODEV;
 961         }
 962
 963         /*
 964          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
 965          * if we have more than one endpoint we are definitely in download
 966          * mode
 967          */
 968         if (interface->bNumEndpoints > 1)
 969                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
 970         else
 971                 /* Otherwise we will remain in configuring mode */
 972                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
 973
 974         /********************************************************************/
 975         /* Download Mode */
 976         /********************************************************************/
 977         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 978                 struct ti_i2c_desc *rom_desc;
 979
 980                 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
 981
 982                 status = check_i2c_image(serial);
 983                 if (status) {
 984                         dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
 985                         return status;
 986                 }
 987
 988                 /* Validate Hardware version number
 989                  * Read Manufacturing Descriptor from TI Based Edgeport
 990                  */
 991                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
 992                 if (!ti_manuf_desc)
 993                         return -ENOMEM;
 994
 995                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
 996                 if (status) {
 997                         kfree(ti_manuf_desc);
 998                         return status;
 999                 }
1000
1001                 /* Check version number of ION descriptor */
1002                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1003                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1004                                 __func__, ti_cpu_rev(ti_manuf_desc));
1005                         kfree(ti_manuf_desc);
1006                         return -EINVAL;
1007                 }
1008
1009                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
1010                 if (!rom_desc) {
1011                         kfree(ti_manuf_desc);
1012                         return -ENOMEM;
1013                 }
1014
1015                 /* Search for type 2 record (firmware record) */
1016                 start_address = get_descriptor_addr(serial,
1017                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1018                 if (start_address != 0) {
1019                         struct ti_i2c_firmware_rec *firmware_version;
1020                         u8 *record;
1021
1022                         dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1023
1024                         firmware_version = kmalloc(sizeof(*firmware_version),
1025                                                                 GFP_KERNEL);
1026                         if (!firmware_version) {
1027                                 kfree(rom_desc);
1028                                 kfree(ti_manuf_desc);
1029                                 return -ENOMEM;
1030                         }
1031
1032                         /* Validate version number
1033                          * Read the descriptor data
1034                          */
1035                         status = read_rom(serial, start_address +
1036                                         sizeof(struct ti_i2c_desc),
1037                                         sizeof(struct ti_i2c_firmware_rec),
1038                                         (__u8 *)firmware_version);
1039                         if (status) {
1040                                 kfree(firmware_version);
1041                                 kfree(rom_desc);
1042                                 kfree(ti_manuf_desc);
1043                                 return status;
1044                         }
1045
1046                         /* Check version number of download with current
1047                            version in I2c */
1048                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1049                                            (firmware_version->Ver_Minor);
1050                         download_new_ver = (OperationalMajorVersion << 8) +
1051                                            (OperationalMinorVersion);
1052
1053                         dev_dbg(dev, "%s - >> FW Versions Device %d.%d  Driver %d.%d\n",
1054                                 __func__, firmware_version->Ver_Major,
1055                                 firmware_version->Ver_Minor,
1056                                 OperationalMajorVersion,
1057                                 OperationalMinorVersion);
1058
1059                         /* Check if we have an old version in the I2C and
1060                            update if necessary */
1061                         if (download_cur_ver < download_new_ver) {
1062                                 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1063                                         __func__,
1064                                         firmware_version->Ver_Major,
1065                                         firmware_version->Ver_Minor,
1066                                         OperationalMajorVersion,
1067                                         OperationalMinorVersion);
1068
1069                                 record = kmalloc(1, GFP_KERNEL);
1070                                 if (!record) {
1071                                         kfree(firmware_version);
1072                                         kfree(rom_desc);
1073                                         kfree(ti_manuf_desc);
1074                                         return -ENOMEM;
1075                                 }
1076                                 /* In order to update the I2C firmware we must
1077                                  * change the type 2 record to type 0xF2. This
1078                                  * will force the UMP to come up in Boot Mode.
1079                                  * Then while in boot mode, the driver will
1080                                  * download the latest firmware (padded to
1081                                  * 15.5k) into the UMP ram. Finally when the
1082                                  * device comes back up in download mode the
1083                                  * driver will cause the new firmware to be
1084                                  * copied from the UMP Ram to I2C and the
1085                                  * firmware will update the record type from
1086                                  * 0xf2 to 0x02.
1087                                  */
1088                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1089
1090                                 /* Change the I2C Firmware record type to
1091                                    0xf2 to trigger an update */
1092                                 status = write_rom(serial, start_address,
1093                                                 sizeof(*record), record);
1094                                 if (status) {
1095                                         kfree(record);
1096                                         kfree(firmware_version);
1097                                         kfree(rom_desc);
1098                                         kfree(ti_manuf_desc);
1099                                         return status;
1100                                 }
1101
1102                                 /* verify the write -- must do this in order
1103                                  * for write to complete before we do the
1104                                  * hardware reset
1105                                  */
1106                                 status = read_rom(serial,
1107                                                         start_address,
1108                                                         sizeof(*record),
1109                                                         record);
1110                                 if (status) {
1111                                         kfree(record);
1112                                         kfree(firmware_version);
1113                                         kfree(rom_desc);
1114                                         kfree(ti_manuf_desc);
1115                                         return status;
1116                                 }
1117
1118                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1119                                         dev_err(dev, "%s - error resetting device\n", __func__);
1120                                         kfree(record);
1121                                         kfree(firmware_version);
1122                                         kfree(rom_desc);
1123                                         kfree(ti_manuf_desc);
1124                                         return -ENODEV;
1125                                 }
1126
1127                                 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1128
1129                                 /* Reset UMP -- Back to BOOT MODE */
1130                                 status = ti_vsend_sync(serial->serial->dev,
1131                                                 UMPC_HARDWARE_RESET,
1132                                                 0, 0, NULL, 0);
1133
1134                                 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1135
1136                                 /* return an error on purpose. */
1137                                 kfree(record);
1138                                 kfree(firmware_version);
1139                                 kfree(rom_desc);
1140                                 kfree(ti_manuf_desc);
1141                                 return -ENODEV;
1142                         }
1143                         kfree(firmware_version);
1144                 }
1145                 /* Search for type 0xF2 record (firmware blank record) */
1146                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1147 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1148                                         sizeof(struct ti_i2c_firmware_rec))
1149                         __u8 *header;
1150                         __u8 *vheader;
1151
1152                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1153                         if (!header) {
1154                                 kfree(rom_desc);
1155                                 kfree(ti_manuf_desc);
1156                                 return -ENOMEM;
1157                         }
1158
1159                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1160                         if (!vheader) {
1161                                 kfree(header);
1162                                 kfree(rom_desc);
1163                                 kfree(ti_manuf_desc);
1164                                 return -ENOMEM;
1165                         }
1166
1167                         dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1168
1169                         /*
1170                          * In order to update the I2C firmware we must change
1171                          * the type 2 record to type 0xF2. This will force the
1172                          * UMP to come up in Boot Mode.  Then while in boot
1173                          * mode, the driver will download the latest firmware
1174                          * (padded to 15.5k) into the UMP ram. Finally when the
1175                          * device comes back up in download mode the driver
1176                          * will cause the new firmware to be copied from the
1177                          * UMP Ram to I2C and the firmware will update the
1178                          * record type from 0xf2 to 0x02.
1179                          */
1180                         status = build_i2c_fw_hdr(header, dev);
1181                         if (status) {
1182                                 kfree(vheader);
1183                                 kfree(header);
1184                                 kfree(rom_desc);
1185                                 kfree(ti_manuf_desc);
1186                                 return -EINVAL;
1187                         }
1188
1189                         /* Update I2C with type 0xf2 record with correct
1190                            size and checksum */
1191                         status = write_rom(serial,
1192                                                 start_address,
1193                                                 HEADER_SIZE,
1194                                                 header);
1195                         if (status) {
1196                                 kfree(vheader);
1197                                 kfree(header);
1198                                 kfree(rom_desc);
1199                                 kfree(ti_manuf_desc);
1200                                 return -EINVAL;
1201                         }
1202
1203                         /* verify the write -- must do this in order for
1204                            write to complete before we do the hardware reset */
1205                         status = read_rom(serial, start_address,
1206                                                         HEADER_SIZE, vheader);
1207
1208                         if (status) {
1209                                 dev_dbg(dev, "%s - can't read header back\n", __func__);
1210                                 kfree(vheader);
1211                                 kfree(header);
1212                                 kfree(rom_desc);
1213                                 kfree(ti_manuf_desc);
1214                                 return status;
1215                         }
1216                         if (memcmp(vheader, header, HEADER_SIZE)) {
1217                                 dev_dbg(dev, "%s - write download record failed\n", __func__);
1218                                 kfree(vheader);
1219                                 kfree(header);
1220                                 kfree(rom_desc);
1221                                 kfree(ti_manuf_desc);
1222                                 return -EINVAL;
1223                         }
1224
1225                         kfree(vheader);
1226                         kfree(header);
1227
1228                         dev_dbg(dev, "%s - Start firmware update\n", __func__);
1229
1230                         /* Tell firmware to copy download image into I2C */
1231                         status = ti_vsend_sync(serial->serial->dev,
1232                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1233
1234                         dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1235                         if (status) {
1236                                 dev_err(dev,
1237                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1238                                                                 __func__);
1239                                 kfree(rom_desc);
1240                                 kfree(ti_manuf_desc);
1241                                 return status;
1242                         }
1243                 }
1244
1245                 // The device is running the download code
1246                 kfree(rom_desc);
1247                 kfree(ti_manuf_desc);
1248                 return 0;
1249         }
1250
1251         /********************************************************************/
1252         /* Boot Mode */
1253         /********************************************************************/
1254         dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1255
1256         /* Configure the TI device so we can use the BULK pipes for download */
1257         status = config_boot_dev(serial->serial->dev);
1258         if (status)
1259                 return status;
1260
1261         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1262                                                         != USB_VENDOR_ID_ION) {
1263                 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1264                         le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1265                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1266                 goto stayinbootmode;
1267         }
1268
1269         /* We have an ION device (I2c Must be programmed)
1270            Determine I2C image type */
1271         if (i2c_type_bootmode(serial))
1272                 goto stayinbootmode;
1273
1274         /* Check for ION Vendor ID and that the I2C is valid */
1275         if (!check_i2c_image(serial)) {
1276                 struct ti_i2c_image_header *header;
1277                 int i;
1278                 __u8 cs = 0;
1279                 __u8 *buffer;
1280                 int buffer_size;
1281                 int err;
1282                 const struct firmware *fw;
1283                 const char *fw_name = "edgeport/down3.bin";
1284
1285                 /* Validate Hardware version number
1286                  * Read Manufacturing Descriptor from TI Based Edgeport
1287                  */
1288                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1289                 if (!ti_manuf_desc)
1290                         return -ENOMEM;
1291
1292                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1293                 if (status) {
1294                         kfree(ti_manuf_desc);
1295                         goto stayinbootmode;
1296                 }
1297
1298                 /* Check for version 2 */
1299                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1300                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1301                                 __func__, ti_cpu_rev(ti_manuf_desc));
1302                         kfree(ti_manuf_desc);
1303                         goto stayinbootmode;
1304                 }
1305
1306                 kfree(ti_manuf_desc);
1307
1308                 /*
1309                  * In order to update the I2C firmware we must change the type
1310                  * 2 record to type 0xF2. This will force the UMP to come up
1311                  * in Boot Mode.  Then while in boot mode, the driver will
1312                  * download the latest firmware (padded to 15.5k) into the
1313                  * UMP ram. Finally when the device comes back up in download
1314                  * mode the driver will cause the new firmware to be copied
1315                  * from the UMP Ram to I2C and the firmware will update the
1316                  * record type from 0xf2 to 0x02.
1317                  *
1318                  * Do we really have to copy the whole firmware image,
1319                  * or could we do this in place!
1320                  */
1321
1322                 /* Allocate a 15.5k buffer + 3 byte header */
1323                 buffer_size = (((1024 * 16) - 512) +
1324                                         sizeof(struct ti_i2c_image_header));
1325                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1326                 if (!buffer)
1327                         return -ENOMEM;
1328
1329                 /* Initialize the buffer to 0xff (pad the buffer) */
1330                 memset(buffer, 0xff, buffer_size);
1331
1332                 err = request_firmware(&fw, fw_name, dev);
1333                 if (err) {
1334                         dev_err(dev, "Failed to load image \"%s\" err %d\n",
1335                                 fw_name, err);
1336                         kfree(buffer);
1337                         return err;
1338                 }
1339                 memcpy(buffer, &fw->data[4], fw->size - 4);
1340                 release_firmware(fw);
1341
1342                 for (i = sizeof(struct ti_i2c_image_header);
1343                                 i < buffer_size; i++) {
1344                         cs = (__u8)(cs + buffer[i]);
1345                 }
1346
1347                 header = (struct ti_i2c_image_header *)buffer;
1348
1349                 /* update length and checksum after padding */
1350                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1351                                         sizeof(struct ti_i2c_image_header)));
1352                 header->CheckSum = cs;
1353
1354                 /* Download the operational code  */
1355                 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1356                 status = download_code(serial, buffer, buffer_size);
1357
1358                 kfree(buffer);
1359
1360                 if (status) {
1361                         dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1362                         return status;
1363                 }
1364
1365                 /* Device will reboot */
1366                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1367
1368                 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1369
1370                 /* return an error on purpose */
1371                 return -ENODEV;
1372         }
1373
1374 stayinbootmode:
1375         /* Eprom is invalid or blank stay in boot mode */
1376         dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1377         serial->product_info.TiMode = TI_MODE_BOOT;
1378
1379         return 0;
1380 }
1381
1382
1383 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1384 {
1385         int port_number = port->port->port_number;
1386
1387         on = !!on;      /* 1 or 0 not bitmask */
1388         return send_cmd(port->port->serial->dev,
1389                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1390                         on, NULL, 0);
1391 }
1392
1393
1394 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1395 {
1396         int status = 0;
1397
1398         dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1399
1400         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1401         if (status)
1402                 return status;
1403         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1404         if (status)
1405                 return status;
1406         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1407 }
1408
1409 /* Convert TI LSR to standard UART flags */
1410 static __u8 map_line_status(__u8 ti_lsr)
1411 {
1412         __u8 lsr = 0;
1413
1414 #define MAP_FLAG(flagUmp, flagUart)    \
1415         if (ti_lsr & flagUmp) \
1416                 lsr |= flagUart;
1417
1418         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1419         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1420         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1421         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1422         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1423         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1424
1425 #undef MAP_FLAG
1426
1427         return lsr;
1428 }
1429
1430 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1431 {
1432         struct async_icount *icount;
1433         struct tty_struct *tty;
1434
1435         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1436
1437         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1438                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1439                 icount = &edge_port->port->icount;
1440
1441                 /* update input line counters */
1442                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1443                         icount->cts++;
1444                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1445                         icount->dsr++;
1446                 if (msr & EDGEPORT_MSR_DELTA_CD)
1447                         icount->dcd++;
1448                 if (msr & EDGEPORT_MSR_DELTA_RI)
1449                         icount->rng++;
1450                 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1451         }
1452
1453         /* Save the new modem status */
1454         edge_port->shadow_msr = msr & 0xf0;
1455
1456         tty = tty_port_tty_get(&edge_port->port->port);
1457         /* handle CTS flow control */
1458         if (tty && C_CRTSCTS(tty)) {
1459                 if (msr & EDGEPORT_MSR_CTS) {
1460                         tty->hw_stopped = 0;
1461                         tty_wakeup(tty);
1462                 } else {
1463                         tty->hw_stopped = 1;
1464                 }
1465         }
1466         tty_kref_put(tty);
1467 }
1468
1469 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1470                                                         __u8 lsr, __u8 data)
1471 {
1472         struct async_icount *icount;
1473         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1474                                                 LSR_FRM_ERR | LSR_BREAK));
1475
1476         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1477
1478         edge_port->shadow_lsr = lsr;
1479
1480         if (new_lsr & LSR_BREAK)
1481                 /*
1482                  * Parity and Framing errors only count if they
1483                  * occur exclusive of a break being received.
1484                  */
1485                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1486
1487         /* Place LSR data byte into Rx buffer */
1488         if (lsr_data)
1489                 edge_tty_recv(edge_port->port, &data, 1);
1490
1491         /* update input line counters */
1492         icount = &edge_port->port->icount;
1493         if (new_lsr & LSR_BREAK)
1494                 icount->brk++;
1495         if (new_lsr & LSR_OVER_ERR)
1496                 icount->overrun++;
1497         if (new_lsr & LSR_PAR_ERR)
1498                 icount->parity++;
1499         if (new_lsr & LSR_FRM_ERR)
1500                 icount->frame++;
1501 }
1502
1503
1504 static void edge_interrupt_callback(struct urb *urb)
1505 {
1506         struct edgeport_serial *edge_serial = urb->context;
1507         struct usb_serial_port *port;
1508         struct edgeport_port *edge_port;
1509         struct device *dev;
1510         unsigned char *data = urb->transfer_buffer;
1511         int length = urb->actual_length;
1512         int port_number;
1513         int function;
1514         int retval;
1515         __u8 lsr;
1516         __u8 msr;
1517         int status = urb->status;
1518
1519         switch (status) {
1520         case 0:
1521                 /* success */
1522                 break;
1523         case -ECONNRESET:
1524         case -ENOENT:
1525         case -ESHUTDOWN:
1526                 /* this urb is terminated, clean up */
1527                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1528                     __func__, status);
1529                 return;
1530         default:
1531                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1532                         "%d\n", __func__, status);
1533                 goto exit;
1534         }
1535
1536         if (!length) {
1537                 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1538                 goto exit;
1539         }
1540
1541         dev = &edge_serial->serial->dev->dev;
1542         usb_serial_debug_data(dev, __func__, length, data);
1543
1544         if (length != 2) {
1545                 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1546                 goto exit;
1547         }
1548
1549         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1550         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1551         dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1552                 port_number, function, data[1]);
1553         port = edge_serial->serial->port[port_number];
1554         edge_port = usb_get_serial_port_data(port);
1555         if (!edge_port) {
1556                 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1557                 return;
1558         }
1559         switch (function) {
1560         case TIUMP_INTERRUPT_CODE_LSR:
1561                 lsr = map_line_status(data[1]);
1562                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1563                         /* Save the LSR event for bulk read
1564                            completion routine */
1565                         dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1566                                 __func__, port_number, lsr);
1567                         edge_port->lsr_event = 1;
1568                         edge_port->lsr_mask = lsr;
1569                 } else {
1570                         dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1571                                 __func__, port_number, lsr);
1572                         handle_new_lsr(edge_port, 0, lsr, 0);
1573                 }
1574                 break;
1575
1576         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1577                 /* Copy MSR from UMP */
1578                 msr = data[1];
1579                 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1580                         __func__, port_number, msr);
1581                 handle_new_msr(edge_port, msr);
1582                 break;
1583
1584         default:
1585                 dev_err(&urb->dev->dev,
1586                         "%s - Unknown Interrupt code from UMP %x\n",
1587                         __func__, data[1]);
1588                 break;
1589
1590         }
1591
1592 exit:
1593         retval = usb_submit_urb(urb, GFP_ATOMIC);
1594         if (retval)
1595                 dev_err(&urb->dev->dev,
1596                         "%s - usb_submit_urb failed with result %d\n",
1597                          __func__, retval);
1598 }
1599
1600 static void edge_bulk_in_callback(struct urb *urb)
1601 {
1602         struct edgeport_port *edge_port = urb->context;
1603         struct device *dev = &edge_port->port->dev;
1604         unsigned char *data = urb->transfer_buffer;
1605         int retval = 0;
1606         int port_number;
1607         int status = urb->status;
1608
1609         switch (status) {
1610         case 0:
1611                 /* success */
1612                 break;
1613         case -ECONNRESET:
1614         case -ENOENT:
1615         case -ESHUTDOWN:
1616                 /* this urb is terminated, clean up */
1617                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1618                 return;
1619         default:
1620                 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1621         }
1622
1623         if (status == -EPIPE)
1624                 goto exit;
1625
1626         if (status) {
1627                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1628                 return;
1629         }
1630
1631         port_number = edge_port->port->port_number;
1632
1633         if (edge_port->lsr_event) {
1634                 edge_port->lsr_event = 0;
1635                 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1636                         __func__, port_number, edge_port->lsr_mask, *data);
1637                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1638                 /* Adjust buffer length/pointer */
1639                 --urb->actual_length;
1640                 ++data;
1641         }
1642
1643         if (urb->actual_length) {
1644                 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1645                 if (edge_port->close_pending)
1646                         dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1647                                                                 __func__);
1648                 else
1649                         edge_tty_recv(edge_port->port, data,
1650                                         urb->actual_length);
1651                 edge_port->port->icount.rx += urb->actual_length;
1652         }
1653
1654 exit:
1655         /* continue read unless stopped */
1656         spin_lock(&edge_port->ep_lock);
1657         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1658                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1659         else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1660                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1661
1662         spin_unlock(&edge_port->ep_lock);
1663         if (retval)
1664                 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1665 }
1666
1667 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1668                 int length)
1669 {
1670         int queued;
1671
1672         queued = tty_insert_flip_string(&port->port, data, length);
1673         if (queued < length)
1674                 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1675                         __func__, length - queued);
1676         tty_flip_buffer_push(&port->port);
1677 }
1678
1679 static void edge_bulk_out_callback(struct urb *urb)
1680 {
1681         struct usb_serial_port *port = urb->context;
1682         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1683         int status = urb->status;
1684         struct tty_struct *tty;
1685
1686         edge_port->ep_write_urb_in_use = 0;
1687
1688         switch (status) {
1689         case 0:
1690                 /* success */
1691                 break;
1692         case -ECONNRESET:
1693         case -ENOENT:
1694         case -ESHUTDOWN:
1695                 /* this urb is terminated, clean up */
1696                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1697                     __func__, status);
1698                 return;
1699         default:
1700                 dev_err_console(port, "%s - nonzero write bulk status "
1701                         "received: %d\n", __func__, status);
1702         }
1703
1704         /* send any buffered data */
1705         tty = tty_port_tty_get(&port->port);
1706         edge_send(port, tty);
1707         tty_kref_put(tty);
1708 }
1709
1710 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1711 {
1712         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1713         struct edgeport_serial *edge_serial;
1714         struct usb_device *dev;
1715         struct urb *urb;
1716         int port_number;
1717         int status;
1718         u16 open_settings;
1719         u8 transaction_timeout;
1720
1721         if (edge_port == NULL)
1722                 return -ENODEV;
1723
1724         port_number = port->port_number;
1725
1726         dev = port->serial->dev;
1727
1728         /* turn off loopback */
1729         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1730         if (status) {
1731                 dev_err(&port->dev,
1732                                 "%s - cannot send clear loopback command, %d\n",
1733                         __func__, status);
1734                 return status;
1735         }
1736
1737         /* set up the port settings */
1738         if (tty)
1739                 edge_set_termios(tty, port, &tty->termios);
1740
1741         /* open up the port */
1742
1743         /* milliseconds to timeout for DMA transfer */
1744         transaction_timeout = 2;
1745
1746         edge_port->ump_read_timeout =
1747                                 max(20, ((transaction_timeout * 3) / 2));
1748
1749         /* milliseconds to timeout for DMA transfer */
1750         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1751                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1752                              (transaction_timeout << 2));
1753
1754         dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1755
1756         /* Tell TI to open and start the port */
1757         status = send_cmd(dev, UMPC_OPEN_PORT,
1758                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1759         if (status) {
1760                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1761                                                         __func__, status);
1762                 return status;
1763         }
1764
1765         /* Start the DMA? */
1766         status = send_cmd(dev, UMPC_START_PORT,
1767                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1768         if (status) {
1769                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1770                                                         __func__, status);
1771                 return status;
1772         }
1773
1774         /* Clear TX and RX buffers in UMP */
1775         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1776         if (status) {
1777                 dev_err(&port->dev,
1778                         "%s - cannot send clear buffers command, %d\n",
1779                         __func__, status);
1780                 return status;
1781         }
1782
1783         /* Read Initial MSR */
1784         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1785                                 (__u16)(UMPM_UART1_PORT + port_number),
1786                                 &edge_port->shadow_msr, 1);
1787         if (status) {
1788                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1789                                                         __func__, status);
1790                 return status;
1791         }
1792
1793         dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1794
1795         /* Set Initial MCR */
1796         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1797         dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1798
1799         edge_serial = edge_port->edge_serial;
1800         if (mutex_lock_interruptible(&edge_serial->es_lock))
1801                 return -ERESTARTSYS;
1802         if (edge_serial->num_ports_open == 0) {
1803                 /* we are the first port to open, post the interrupt urb */
1804                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1805                 if (!urb) {
1806                         dev_err(&port->dev,
1807                                 "%s - no interrupt urb present, exiting\n",
1808                                 __func__);
1809                         status = -EINVAL;
1810                         goto release_es_lock;
1811                 }
1812                 urb->context = edge_serial;
1813                 status = usb_submit_urb(urb, GFP_KERNEL);
1814                 if (status) {
1815                         dev_err(&port->dev,
1816                                 "%s - usb_submit_urb failed with value %d\n",
1817                                         __func__, status);
1818                         goto release_es_lock;
1819                 }
1820         }
1821
1822         /*
1823          * reset the data toggle on the bulk endpoints to work around bug in
1824          * host controllers where things get out of sync some times
1825          */
1826         usb_clear_halt(dev, port->write_urb->pipe);
1827         usb_clear_halt(dev, port->read_urb->pipe);
1828
1829         /* start up our bulk read urb */
1830         urb = port->read_urb;
1831         if (!urb) {
1832                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1833                                                                 __func__);
1834                 status = -EINVAL;
1835                 goto unlink_int_urb;
1836         }
1837         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1838         urb->context = edge_port;
1839         status = usb_submit_urb(urb, GFP_KERNEL);
1840         if (status) {
1841                 dev_err(&port->dev,
1842                         "%s - read bulk usb_submit_urb failed with value %d\n",
1843                                 __func__, status);
1844                 goto unlink_int_urb;
1845         }
1846
1847         ++edge_serial->num_ports_open;
1848
1849         goto release_es_lock;
1850
1851 unlink_int_urb:
1852         if (edge_port->edge_serial->num_ports_open == 0)
1853                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1854 release_es_lock:
1855         mutex_unlock(&edge_serial->es_lock);
1856         return status;
1857 }
1858
1859 static void edge_close(struct usb_serial_port *port)
1860 {
1861         struct edgeport_serial *edge_serial;
1862         struct edgeport_port *edge_port;
1863         struct usb_serial *serial = port->serial;
1864         unsigned long flags;
1865         int port_number;
1866
1867         edge_serial = usb_get_serial_data(port->serial);
1868         edge_port = usb_get_serial_port_data(port);
1869         if (edge_serial == NULL || edge_port == NULL)
1870                 return;
1871
1872         /* The bulkreadcompletion routine will check
1873          * this flag and dump add read data */
1874         edge_port->close_pending = 1;
1875
1876         usb_kill_urb(port->read_urb);
1877         usb_kill_urb(port->write_urb);
1878         edge_port->ep_write_urb_in_use = 0;
1879         spin_lock_irqsave(&edge_port->ep_lock, flags);
1880         kfifo_reset_out(&port->write_fifo);
1881         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1882
1883         dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1884         port_number = port->port_number;
1885         send_cmd(serial->dev, UMPC_CLOSE_PORT,
1886                      (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1887
1888         mutex_lock(&edge_serial->es_lock);
1889         --edge_port->edge_serial->num_ports_open;
1890         if (edge_port->edge_serial->num_ports_open <= 0) {
1891                 /* last port is now closed, let's shut down our interrupt urb */
1892                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1893                 edge_port->edge_serial->num_ports_open = 0;
1894         }
1895         mutex_unlock(&edge_serial->es_lock);
1896         edge_port->close_pending = 0;
1897 }
1898
1899 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1900                                 const unsigned char *data, int count)
1901 {
1902         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1903
1904         if (count == 0) {
1905                 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1906                 return 0;
1907         }
1908
1909         if (edge_port == NULL)
1910                 return -ENODEV;
1911         if (edge_port->close_pending == 1)
1912                 return -ENODEV;
1913
1914         count = kfifo_in_locked(&port->write_fifo, data, count,
1915                                                         &edge_port->ep_lock);
1916         edge_send(port, tty);
1917
1918         return count;
1919 }
1920
1921 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1922 {
1923         int count, result;
1924         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1925         unsigned long flags;
1926
1927         spin_lock_irqsave(&edge_port->ep_lock, flags);
1928
1929         if (edge_port->ep_write_urb_in_use) {
1930                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1931                 return;
1932         }
1933
1934         count = kfifo_out(&port->write_fifo,
1935                                 port->write_urb->transfer_buffer,
1936                                 port->bulk_out_size);
1937
1938         if (count == 0) {
1939                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1940                 return;
1941         }
1942
1943         edge_port->ep_write_urb_in_use = 1;
1944
1945         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1946
1947         usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1948
1949         /* set up our urb */
1950         port->write_urb->transfer_buffer_length = count;
1951
1952         /* send the data out the bulk port */
1953         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1954         if (result) {
1955                 dev_err_console(port,
1956                         "%s - failed submitting write urb, error %d\n",
1957                                 __func__, result);
1958                 edge_port->ep_write_urb_in_use = 0;
1959                 /* TODO: reschedule edge_send */
1960         } else
1961                 edge_port->port->icount.tx += count;
1962
1963         /* wakeup any process waiting for writes to complete */
1964         /* there is now more room in the buffer for new writes */
1965         if (tty)
1966                 tty_wakeup(tty);
1967 }
1968
1969 static int edge_write_room(struct tty_struct *tty)
1970 {
1971         struct usb_serial_port *port = tty->driver_data;
1972         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1973         int room = 0;
1974         unsigned long flags;
1975
1976         if (edge_port == NULL)
1977                 return 0;
1978         if (edge_port->close_pending == 1)
1979                 return 0;
1980
1981         spin_lock_irqsave(&edge_port->ep_lock, flags);
1982         room = kfifo_avail(&port->write_fifo);
1983         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1984
1985         dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1986         return room;
1987 }
1988
1989 static int edge_chars_in_buffer(struct tty_struct *tty)
1990 {
1991         struct usb_serial_port *port = tty->driver_data;
1992         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1993         int chars = 0;
1994         unsigned long flags;
1995         if (edge_port == NULL)
1996                 return 0;
1997
1998         spin_lock_irqsave(&edge_port->ep_lock, flags);
1999         chars = kfifo_len(&port->write_fifo);
2000         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2001
2002         dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
2003         return chars;
2004 }
2005
2006 static bool edge_tx_empty(struct usb_serial_port *port)
2007 {
2008         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2009         int ret;
2010
2011         ret = tx_active(edge_port);
2012         if (ret > 0)
2013                 return false;
2014
2015         return true;
2016 }
2017
2018 static void edge_throttle(struct tty_struct *tty)
2019 {
2020         struct usb_serial_port *port = tty->driver_data;
2021         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2022         int status;
2023
2024         if (edge_port == NULL)
2025                 return;
2026
2027         /* if we are implementing XON/XOFF, send the stop character */
2028         if (I_IXOFF(tty)) {
2029                 unsigned char stop_char = STOP_CHAR(tty);
2030                 status = edge_write(tty, port, &stop_char, 1);
2031                 if (status <= 0) {
2032                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2033                 }
2034         }
2035
2036         /* if we are implementing RTS/CTS, stop reads */
2037         /* and the Edgeport will clear the RTS line */
2038         if (C_CRTSCTS(tty))
2039                 stop_read(edge_port);
2040
2041 }
2042
2043 static void edge_unthrottle(struct tty_struct *tty)
2044 {
2045         struct usb_serial_port *port = tty->driver_data;
2046         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2047         int status;
2048
2049         if (edge_port == NULL)
2050                 return;
2051
2052         /* if we are implementing XON/XOFF, send the start character */
2053         if (I_IXOFF(tty)) {
2054                 unsigned char start_char = START_CHAR(tty);
2055                 status = edge_write(tty, port, &start_char, 1);
2056                 if (status <= 0) {
2057                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2058                 }
2059         }
2060         /* if we are implementing RTS/CTS, restart reads */
2061         /* are the Edgeport will assert the RTS line */
2062         if (C_CRTSCTS(tty)) {
2063                 status = restart_read(edge_port);
2064                 if (status)
2065                         dev_err(&port->dev,
2066                                 "%s - read bulk usb_submit_urb failed: %d\n",
2067                                                         __func__, status);
2068         }
2069
2070 }
2071
2072 static void stop_read(struct edgeport_port *edge_port)
2073 {
2074         unsigned long flags;
2075
2076         spin_lock_irqsave(&edge_port->ep_lock, flags);
2077
2078         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2079                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2080         edge_port->shadow_mcr &= ~MCR_RTS;
2081
2082         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2083 }
2084
2085 static int restart_read(struct edgeport_port *edge_port)
2086 {
2087         struct urb *urb;
2088         int status = 0;
2089         unsigned long flags;
2090
2091         spin_lock_irqsave(&edge_port->ep_lock, flags);
2092
2093         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2094                 urb = edge_port->port->read_urb;
2095                 status = usb_submit_urb(urb, GFP_ATOMIC);
2096         }
2097         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2098         edge_port->shadow_mcr |= MCR_RTS;
2099
2100         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2101
2102         return status;
2103 }
2104
2105 static void change_port_settings(struct tty_struct *tty,
2106                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2107 {
2108         struct device *dev = &edge_port->port->dev;
2109         struct ump_uart_config *config;
2110         int baud;
2111         unsigned cflag;
2112         int status;
2113         int port_number = edge_port->port->port_number;
2114
2115         config = kmalloc (sizeof (*config), GFP_KERNEL);
2116         if (!config) {
2117                 tty->termios = *old_termios;
2118                 return;
2119         }
2120
2121         cflag = tty->termios.c_cflag;
2122
2123         config->wFlags = 0;
2124
2125         /* These flags must be set */
2126         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2127         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2128         config->bUartMode = (__u8)(edge_port->bUartMode);
2129
2130         switch (cflag & CSIZE) {
2131         case CS5:
2132                     config->bDataBits = UMP_UART_CHAR5BITS;
2133                     dev_dbg(dev, "%s - data bits = 5\n", __func__);
2134                     break;
2135         case CS6:
2136                     config->bDataBits = UMP_UART_CHAR6BITS;
2137                     dev_dbg(dev, "%s - data bits = 6\n", __func__);
2138                     break;
2139         case CS7:
2140                     config->bDataBits = UMP_UART_CHAR7BITS;
2141                     dev_dbg(dev, "%s - data bits = 7\n", __func__);
2142                     break;
2143         default:
2144         case CS8:
2145                     config->bDataBits = UMP_UART_CHAR8BITS;
2146                     dev_dbg(dev, "%s - data bits = 8\n", __func__);
2147                             break;
2148         }
2149
2150         if (cflag & PARENB) {
2151                 if (cflag & PARODD) {
2152                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2153                         config->bParity = UMP_UART_ODDPARITY;
2154                         dev_dbg(dev, "%s - parity = odd\n", __func__);
2155                 } else {
2156                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2157                         config->bParity = UMP_UART_EVENPARITY;
2158                         dev_dbg(dev, "%s - parity = even\n", __func__);
2159                 }
2160         } else {
2161                 config->bParity = UMP_UART_NOPARITY;
2162                 dev_dbg(dev, "%s - parity = none\n", __func__);
2163         }
2164
2165         if (cflag & CSTOPB) {
2166                 config->bStopBits = UMP_UART_STOPBIT2;
2167                 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2168         } else {
2169                 config->bStopBits = UMP_UART_STOPBIT1;
2170                 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2171         }
2172
2173         /* figure out the flow control settings */
2174         if (cflag & CRTSCTS) {
2175                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2176                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2177                 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2178         } else {
2179                 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2180                 tty->hw_stopped = 0;
2181                 restart_read(edge_port);
2182         }
2183
2184         /* if we are implementing XON/XOFF, set the start and stop
2185            character in the device */
2186         config->cXon  = START_CHAR(tty);
2187         config->cXoff = STOP_CHAR(tty);
2188
2189         /* if we are implementing INBOUND XON/XOFF */
2190         if (I_IXOFF(tty)) {
2191                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2192                 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2193                         __func__, config->cXon, config->cXoff);
2194         } else
2195                 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2196
2197         /* if we are implementing OUTBOUND XON/XOFF */
2198         if (I_IXON(tty)) {
2199                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2200                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2201                         __func__, config->cXon, config->cXoff);
2202         } else
2203                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2204
2205         tty->termios.c_cflag &= ~CMSPAR;
2206
2207         /* Round the baud rate */
2208         baud = tty_get_baud_rate(tty);
2209         if (!baud) {
2210                 /* pick a default, any default... */
2211                 baud = 9600;
2212         } else
2213                 tty_encode_baud_rate(tty, baud, baud);
2214
2215         edge_port->baud_rate = baud;
2216         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2217
2218         /* FIXME: Recompute actual baud from divisor here */
2219
2220         dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2221
2222         dev_dbg(dev, "wBaudRate:   %d\n", (int)(461550L / config->wBaudRate));
2223         dev_dbg(dev, "wFlags:    0x%x\n", config->wFlags);
2224         dev_dbg(dev, "bDataBits:   %d\n", config->bDataBits);
2225         dev_dbg(dev, "bParity:     %d\n", config->bParity);
2226         dev_dbg(dev, "bStopBits:   %d\n", config->bStopBits);
2227         dev_dbg(dev, "cXon:        %d\n", config->cXon);
2228         dev_dbg(dev, "cXoff:       %d\n", config->cXoff);
2229         dev_dbg(dev, "bUartMode:   %d\n", config->bUartMode);
2230
2231         /* move the word values into big endian mode */
2232         cpu_to_be16s(&config->wFlags);
2233         cpu_to_be16s(&config->wBaudRate);
2234
2235         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2236                                 (__u8)(UMPM_UART1_PORT + port_number),
2237                                 0, (__u8 *)config, sizeof(*config));
2238         if (status)
2239                 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2240                         __func__, status);
2241         kfree(config);
2242 }
2243
2244 static void edge_set_termios(struct tty_struct *tty,
2245                 struct usb_serial_port *port, struct ktermios *old_termios)
2246 {
2247         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2248         unsigned int cflag;
2249
2250         cflag = tty->termios.c_cflag;
2251
2252         dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2253                 tty->termios.c_cflag, tty->termios.c_iflag);
2254         dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2255                 old_termios->c_cflag, old_termios->c_iflag);
2256
2257         if (edge_port == NULL)
2258                 return;
2259         /* change the port settings to the new ones specified */
2260         change_port_settings(tty, edge_port, old_termios);
2261 }
2262
2263 static int edge_tiocmset(struct tty_struct *tty,
2264                                         unsigned int set, unsigned int clear)
2265 {
2266         struct usb_serial_port *port = tty->driver_data;
2267         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2268         unsigned int mcr;
2269         unsigned long flags;
2270
2271         spin_lock_irqsave(&edge_port->ep_lock, flags);
2272         mcr = edge_port->shadow_mcr;
2273         if (set & TIOCM_RTS)
2274                 mcr |= MCR_RTS;
2275         if (set & TIOCM_DTR)
2276                 mcr |= MCR_DTR;
2277         if (set & TIOCM_LOOP)
2278                 mcr |= MCR_LOOPBACK;
2279
2280         if (clear & TIOCM_RTS)
2281                 mcr &= ~MCR_RTS;
2282         if (clear & TIOCM_DTR)
2283                 mcr &= ~MCR_DTR;
2284         if (clear & TIOCM_LOOP)
2285                 mcr &= ~MCR_LOOPBACK;
2286
2287         edge_port->shadow_mcr = mcr;
2288         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2289
2290         restore_mcr(edge_port, mcr);
2291         return 0;
2292 }
2293
2294 static int edge_tiocmget(struct tty_struct *tty)
2295 {
2296         struct usb_serial_port *port = tty->driver_data;
2297         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2298         unsigned int result = 0;
2299         unsigned int msr;
2300         unsigned int mcr;
2301         unsigned long flags;
2302
2303         spin_lock_irqsave(&edge_port->ep_lock, flags);
2304
2305         msr = edge_port->shadow_msr;
2306         mcr = edge_port->shadow_mcr;
2307         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2308                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2309                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2310                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2311                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2312                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2313
2314
2315         dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2316         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2317
2318         return result;
2319 }
2320
2321 static int get_serial_info(struct edgeport_port *edge_port,
2322                                 struct serial_struct __user *retinfo)
2323 {
2324         struct serial_struct tmp;
2325         unsigned cwait;
2326
2327         if (!retinfo)
2328                 return -EFAULT;
2329
2330         cwait = edge_port->port->port.closing_wait;
2331         if (cwait != ASYNC_CLOSING_WAIT_NONE)
2332                 cwait = jiffies_to_msecs(cwait) / 10;
2333
2334         memset(&tmp, 0, sizeof(tmp));
2335
2336         tmp.type                = PORT_16550A;
2337         tmp.line                = edge_port->port->minor;
2338         tmp.port                = edge_port->port->port_number;
2339         tmp.irq                 = 0;
2340         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2341         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2342         tmp.baud_base           = 9600;
2343         tmp.close_delay         = 5*HZ;
2344         tmp.closing_wait        = cwait;
2345
2346         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2347                 return -EFAULT;
2348         return 0;
2349 }
2350
2351 static int edge_ioctl(struct tty_struct *tty,
2352                                         unsigned int cmd, unsigned long arg)
2353 {
2354         struct usb_serial_port *port = tty->driver_data;
2355         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2356
2357         switch (cmd) {
2358         case TIOCGSERIAL:
2359                 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2360                 return get_serial_info(edge_port,
2361                                 (struct serial_struct __user *) arg);
2362         }
2363         return -ENOIOCTLCMD;
2364 }
2365
2366 static void edge_break(struct tty_struct *tty, int break_state)
2367 {
2368         struct usb_serial_port *port = tty->driver_data;
2369         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2370         int status;
2371         int bv = 0;     /* Off */
2372
2373         if (break_state == -1)
2374                 bv = 1; /* On */
2375         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2376         if (status)
2377                 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2378                         __func__, status);
2379 }
2380
2381 static int edge_startup(struct usb_serial *serial)
2382 {
2383         struct edgeport_serial *edge_serial;
2384         int status;
2385
2386         /* create our private serial structure */
2387         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2388         if (!edge_serial)
2389                 return -ENOMEM;
2390
2391         mutex_init(&edge_serial->es_lock);
2392         edge_serial->serial = serial;
2393         usb_set_serial_data(serial, edge_serial);
2394
2395         status = download_fw(edge_serial);
2396         if (status) {
2397                 kfree(edge_serial);
2398                 return status;
2399         }
2400
2401         return 0;
2402 }
2403
2404 static void edge_disconnect(struct usb_serial *serial)
2405 {
2406 }
2407
2408 static void edge_release(struct usb_serial *serial)
2409 {
2410         kfree(usb_get_serial_data(serial));
2411 }
2412
2413 static int edge_port_probe(struct usb_serial_port *port)
2414 {
2415         struct edgeport_port *edge_port;
2416         int ret;
2417
2418         edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2419         if (!edge_port)
2420                 return -ENOMEM;
2421
2422         spin_lock_init(&edge_port->ep_lock);
2423         edge_port->port = port;
2424         edge_port->edge_serial = usb_get_serial_data(port->serial);
2425         edge_port->bUartMode = default_uart_mode;
2426
2427         switch (port->port_number) {
2428         case 0:
2429                 edge_port->uart_base = UMPMEM_BASE_UART1;
2430                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2431                 break;
2432         case 1:
2433                 edge_port->uart_base = UMPMEM_BASE_UART2;
2434                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2435                 break;
2436         default:
2437                 dev_err(&port->dev, "unknown port number\n");
2438                 ret = -ENODEV;
2439                 goto err;
2440         }
2441
2442         dev_dbg(&port->dev,
2443                 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2444                 __func__, port->port_number, edge_port->uart_base,
2445                 edge_port->dma_address);
2446
2447         usb_set_serial_port_data(port, edge_port);
2448
2449         ret = edge_create_sysfs_attrs(port);
2450         if (ret)
2451                 goto err;
2452
2453         port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2454         port->port.drain_delay = 1;
2455
2456         return 0;
2457 err:
2458         kfree(edge_port);
2459
2460         return ret;
2461 }
2462
2463 static int edge_port_remove(struct usb_serial_port *port)
2464 {
2465         struct edgeport_port *edge_port;
2466
2467         edge_port = usb_get_serial_port_data(port);
2468         edge_remove_sysfs_attrs(port);
2469         kfree(edge_port);
2470
2471         return 0;
2472 }
2473
2474 /* Sysfs Attributes */
2475
2476 static ssize_t uart_mode_show(struct device *dev,
2477         struct device_attribute *attr, char *buf)
2478 {
2479         struct usb_serial_port *port = to_usb_serial_port(dev);
2480         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2481
2482         return sprintf(buf, "%d\n", edge_port->bUartMode);
2483 }
2484
2485 static ssize_t uart_mode_store(struct device *dev,
2486         struct device_attribute *attr, const char *valbuf, size_t count)
2487 {
2488         struct usb_serial_port *port = to_usb_serial_port(dev);
2489         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2490         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2491
2492         dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2493
2494         if (v < 256)
2495                 edge_port->bUartMode = v;
2496         else
2497                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2498
2499         return count;
2500 }
2501 static DEVICE_ATTR_RW(uart_mode);
2502
2503 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2504 {
2505         return device_create_file(&port->dev, &dev_attr_uart_mode);
2506 }
2507
2508 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2509 {
2510         device_remove_file(&port->dev, &dev_attr_uart_mode);
2511         return 0;
2512 }
2513
2514
2515 static struct usb_serial_driver edgeport_1port_device = {
2516         .driver = {
2517                 .owner          = THIS_MODULE,
2518                 .name           = "edgeport_ti_1",
2519         },
2520         .description            = "Edgeport TI 1 port adapter",
2521         .id_table               = edgeport_1port_id_table,
2522         .num_ports              = 1,
2523         .open                   = edge_open,
2524         .close                  = edge_close,
2525         .throttle               = edge_throttle,
2526         .unthrottle             = edge_unthrottle,
2527         .attach                 = edge_startup,
2528         .disconnect             = edge_disconnect,
2529         .release                = edge_release,
2530         .port_probe             = edge_port_probe,
2531         .port_remove            = edge_port_remove,
2532         .ioctl                  = edge_ioctl,
2533         .set_termios            = edge_set_termios,
2534         .tiocmget               = edge_tiocmget,
2535         .tiocmset               = edge_tiocmset,
2536         .tiocmiwait             = usb_serial_generic_tiocmiwait,
2537         .get_icount             = usb_serial_generic_get_icount,
2538         .write                  = edge_write,
2539         .write_room             = edge_write_room,
2540         .chars_in_buffer        = edge_chars_in_buffer,
2541         .tx_empty               = edge_tx_empty,
2542         .break_ctl              = edge_break,
2543         .read_int_callback      = edge_interrupt_callback,
2544         .read_bulk_callback     = edge_bulk_in_callback,
2545         .write_bulk_callback    = edge_bulk_out_callback,
2546 };
2547
2548 static struct usb_serial_driver edgeport_2port_device = {
2549         .driver = {
2550                 .owner          = THIS_MODULE,
2551                 .name           = "edgeport_ti_2",
2552         },
2553         .description            = "Edgeport TI 2 port adapter",
2554         .id_table               = edgeport_2port_id_table,
2555         .num_ports              = 2,
2556         .open                   = edge_open,
2557         .close                  = edge_close,
2558         .throttle               = edge_throttle,
2559         .unthrottle             = edge_unthrottle,
2560         .attach                 = edge_startup,
2561         .disconnect             = edge_disconnect,
2562         .release                = edge_release,
2563         .port_probe             = edge_port_probe,
2564         .port_remove            = edge_port_remove,
2565         .ioctl                  = edge_ioctl,
2566         .set_termios            = edge_set_termios,
2567         .tiocmget               = edge_tiocmget,
2568         .tiocmset               = edge_tiocmset,
2569         .tiocmiwait             = usb_serial_generic_tiocmiwait,
2570         .get_icount             = usb_serial_generic_get_icount,
2571         .write                  = edge_write,
2572         .write_room             = edge_write_room,
2573         .chars_in_buffer        = edge_chars_in_buffer,
2574         .tx_empty               = edge_tx_empty,
2575         .break_ctl              = edge_break,
2576         .read_int_callback      = edge_interrupt_callback,
2577         .read_bulk_callback     = edge_bulk_in_callback,
2578         .write_bulk_callback    = edge_bulk_out_callback,
2579 };
2580
2581 static struct usb_serial_driver * const serial_drivers[] = {
2582         &edgeport_1port_device, &edgeport_2port_device, NULL
2583 };
2584
2585 module_usb_serial_driver(serial_drivers, id_table_combined);
2586
2587 MODULE_AUTHOR(DRIVER_AUTHOR);
2588 MODULE_DESCRIPTION(DRIVER_DESC);
2589 MODULE_LICENSE("GPL");
2590 MODULE_FIRMWARE("edgeport/down3.bin");
2591
2592 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2593 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2594
2595 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2596 MODULE_PARM_DESC(ignore_cpu_rev,
2597                         "Ignore the cpu revision when connecting to a device");
2598
2599 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2600 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");