Pileus Git - ~andy/linux/blob - drivers/usb/serial/io_ti.c

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