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                         return -ENOMEM;
 369
 370                 status = read_boot_mem(serial, 0, 1, temp);
 371                 kfree(temp);
 372                 if (status)
 373                         return status;
 374         }
 375
 376         for (i = 0; i < length; ++i) {
 377                 status = ti_vsend_sync(serial->serial->dev,
 378                                 UMPC_MEMORY_WRITE, buffer[i],
 379                                 (__u16)(i + start_address), NULL, 0);
 380                 if (status)
 381                         return status;
 382         }
 383
 384         dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length);
 385         usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer);
 386
 387         return status;
 388 }
 389
 390
 391 /* Write edgeport I2C memory to TI chip */
 392 static int write_i2c_mem(struct edgeport_serial *serial,
 393                 int start_address, int length, __u8 address_type, __u8 *buffer)
 394 {
 395         struct device *dev = &serial->serial->dev->dev;
 396         int status = 0;
 397         int write_length;
 398         __be16 be_start_address;
 399
 400         /* We can only send a maximum of 1 aligned byte page at a time */
 401
 402         /* calculate the number of bytes left in the first page */
 403         write_length = EPROM_PAGE_SIZE -
 404                                 (start_address & (EPROM_PAGE_SIZE - 1));
 405
 406         if (write_length > length)
 407                 write_length = length;
 408
 409         dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n",
 410                 __func__, start_address, write_length);
 411         usb_serial_debug_data(dev, __func__, write_length, buffer);
 412
 413         /* Write first page */
 414         be_start_address = cpu_to_be16(start_address);
 415         status = ti_vsend_sync(serial->serial->dev,
 416                                 UMPC_MEMORY_WRITE, (__u16)address_type,
 417                                 (__force __u16)be_start_address,
 418                                 buffer, write_length);
 419         if (status) {
 420                 dev_dbg(dev, "%s - ERROR %d\n", __func__, status);
 421                 return status;
 422         }
 423
 424         length          -= write_length;
 425         start_address   += write_length;
 426         buffer          += write_length;
 427
 428         /* We should be aligned now -- can write
 429            max page size bytes at a time */
 430         while (length) {
 431                 if (length > EPROM_PAGE_SIZE)
 432                         write_length = EPROM_PAGE_SIZE;
 433                 else
 434                         write_length = length;
 435
 436                 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n",
 437                         __func__, start_address, write_length);
 438                 usb_serial_debug_data(dev, __func__, write_length, buffer);
 439
 440                 /* Write next page */
 441                 be_start_address = cpu_to_be16(start_address);
 442                 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE,
 443                                 (__u16)address_type,
 444                                 (__force __u16)be_start_address,
 445                                 buffer, write_length);
 446                 if (status) {
 447                         dev_err(dev, "%s - ERROR %d\n", __func__, status);
 448                         return status;
 449                 }
 450
 451                 length          -= write_length;
 452                 start_address   += write_length;
 453                 buffer          += write_length;
 454         }
 455         return status;
 456 }
 457
 458 /* Examine the UMP DMA registers and LSR
 459  *
 460  * Check the MSBit of the X and Y DMA byte count registers.
 461  * A zero in this bit indicates that the TX DMA buffers are empty
 462  * then check the TX Empty bit in the UART.
 463  */
 464 static int tx_active(struct edgeport_port *port)
 465 {
 466         int status;
 467         struct out_endpoint_desc_block *oedb;
 468         __u8 *lsr;
 469         int bytes_left = 0;
 470
 471         oedb = kmalloc(sizeof(*oedb), GFP_KERNEL);
 472         if (!oedb)
 473                 return -ENOMEM;
 474
 475         lsr = kmalloc(1, GFP_KERNEL);   /* Sigh, that's right, just one byte,
 476                                            as not all platforms can do DMA
 477                                            from stack */
 478         if (!lsr) {
 479                 kfree(oedb);
 480                 return -ENOMEM;
 481         }
 482         /* Read the DMA Count Registers */
 483         status = read_ram(port->port->serial->dev, port->dma_address,
 484                                                 sizeof(*oedb), (void *)oedb);
 485         if (status)
 486                 goto exit_is_tx_active;
 487
 488         dev_dbg(&port->port->dev, "%s - XByteCount    0x%X\n", __func__, oedb->XByteCount);
 489
 490         /* and the LSR */
 491         status = read_ram(port->port->serial->dev,
 492                         port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr);
 493
 494         if (status)
 495                 goto exit_is_tx_active;
 496         dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr);
 497
 498         /* If either buffer has data or we are transmitting then return TRUE */
 499         if ((oedb->XByteCount & 0x80) != 0)
 500                 bytes_left += 64;
 501
 502         if ((*lsr & UMP_UART_LSR_TX_MASK) == 0)
 503                 bytes_left += 1;
 504
 505         /* We return Not Active if we get any kind of error */
 506 exit_is_tx_active:
 507         dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left);
 508
 509         kfree(lsr);
 510         kfree(oedb);
 511         return bytes_left;
 512 }
 513
 514 static int choose_config(struct usb_device *dev)
 515 {
 516         /*
 517          * There may be multiple configurations on this device, in which case
 518          * we would need to read and parse all of them to find out which one
 519          * we want. However, we just support one config at this point,
 520          * configuration # 1, which is Config Descriptor 0.
 521          */
 522
 523         dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n",
 524                 __func__, dev->config->desc.bNumInterfaces);
 525         dev_dbg(&dev->dev, "%s - MAX Power            = %d\n",
 526                 __func__, dev->config->desc.bMaxPower * 2);
 527
 528         if (dev->config->desc.bNumInterfaces != 1) {
 529                 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
 530                 return -ENODEV;
 531         }
 532
 533         return 0;
 534 }
 535
 536 static int read_rom(struct edgeport_serial *serial,
 537                                 int start_address, int length, __u8 *buffer)
 538 {
 539         int status;
 540
 541         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 542                 status = read_download_mem(serial->serial->dev,
 543                                                start_address,
 544                                                length,
 545                                                serial->TI_I2C_Type,
 546                                                buffer);
 547         } else {
 548                 status = read_boot_mem(serial, start_address, length,
 549                                                                 buffer);
 550         }
 551         return status;
 552 }
 553
 554 static int write_rom(struct edgeport_serial *serial, int start_address,
 555                                                 int length, __u8 *buffer)
 556 {
 557         if (serial->product_info.TiMode == TI_MODE_BOOT)
 558                 return write_boot_mem(serial, start_address, length,
 559                                                                 buffer);
 560
 561         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
 562                 return write_i2c_mem(serial, start_address, length,
 563                                                 serial->TI_I2C_Type, buffer);
 564         return -EINVAL;
 565 }
 566
 567
 568
 569 /* Read a descriptor header from I2C based on type */
 570 static int get_descriptor_addr(struct edgeport_serial *serial,
 571                                 int desc_type, struct ti_i2c_desc *rom_desc)
 572 {
 573         int start_address;
 574         int status;
 575
 576         /* Search for requested descriptor in I2C */
 577         start_address = 2;
 578         do {
 579                 status = read_rom(serial,
 580                                    start_address,
 581                                    sizeof(struct ti_i2c_desc),
 582                                    (__u8 *)rom_desc);
 583                 if (status)
 584                         return 0;
 585
 586                 if (rom_desc->Type == desc_type)
 587                         return start_address;
 588
 589                 start_address = start_address + sizeof(struct ti_i2c_desc)
 590                                                         + rom_desc->Size;
 591
 592         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
 593
 594         return 0;
 595 }
 596
 597 /* Validate descriptor checksum */
 598 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
 599 {
 600         __u16 i;
 601         __u8 cs = 0;
 602
 603         for (i = 0; i < rom_desc->Size; i++)
 604                 cs = (__u8)(cs + buffer[i]);
 605
 606         if (cs != rom_desc->CheckSum) {
 607                 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
 608                 return -EINVAL;
 609         }
 610         return 0;
 611 }
 612
 613 /* Make sure that the I2C image is good */
 614 static int check_i2c_image(struct edgeport_serial *serial)
 615 {
 616         struct device *dev = &serial->serial->dev->dev;
 617         int status = 0;
 618         struct ti_i2c_desc *rom_desc;
 619         int start_address = 2;
 620         __u8 *buffer;
 621         __u16 ttype;
 622
 623         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 624         if (!rom_desc)
 625                 return -ENOMEM;
 626
 627         buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL);
 628         if (!buffer) {
 629                 kfree(rom_desc);
 630                 return -ENOMEM;
 631         }
 632
 633         /* Read the first byte (Signature0) must be 0x52 or 0x10 */
 634         status = read_rom(serial, 0, 1, buffer);
 635         if (status)
 636                 goto out;
 637
 638         if (*buffer != UMP5152 && *buffer != UMP3410) {
 639                 dev_err(dev, "%s - invalid buffer signature\n", __func__);
 640                 status = -ENODEV;
 641                 goto out;
 642         }
 643
 644         do {
 645                 /* Validate the I2C */
 646                 status = read_rom(serial,
 647                                 start_address,
 648                                 sizeof(struct ti_i2c_desc),
 649                                 (__u8 *)rom_desc);
 650                 if (status)
 651                         break;
 652
 653                 if ((start_address + sizeof(struct ti_i2c_desc) +
 654                                         rom_desc->Size) > TI_MAX_I2C_SIZE) {
 655                         status = -ENODEV;
 656                         dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__);
 657                         break;
 658                 }
 659
 660                 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type);
 661
 662                 /* Skip type 2 record */
 663                 ttype = rom_desc->Type & 0x0f;
 664                 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
 665                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) {
 666                         /* Read the descriptor data */
 667                         status = read_rom(serial, start_address +
 668                                                 sizeof(struct ti_i2c_desc),
 669                                                 rom_desc->Size, buffer);
 670                         if (status)
 671                                 break;
 672
 673                         status = valid_csum(rom_desc, buffer);
 674                         if (status)
 675                                 break;
 676                 }
 677                 start_address = start_address + sizeof(struct ti_i2c_desc) +
 678                                                                 rom_desc->Size;
 679
 680         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) &&
 681                                 (start_address < TI_MAX_I2C_SIZE));
 682
 683         if ((rom_desc->Type != I2C_DESC_TYPE_ION) ||
 684                                 (start_address > TI_MAX_I2C_SIZE))
 685                 status = -ENODEV;
 686
 687 out:
 688         kfree(buffer);
 689         kfree(rom_desc);
 690         return status;
 691 }
 692
 693 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer)
 694 {
 695         int status;
 696         int start_address;
 697         struct ti_i2c_desc *rom_desc;
 698         struct edge_ti_manuf_descriptor *desc;
 699         struct device *dev = &serial->serial->dev->dev;
 700
 701         rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 702         if (!rom_desc)
 703                 return -ENOMEM;
 704
 705         start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION,
 706                                                                 rom_desc);
 707
 708         if (!start_address) {
 709                 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__);
 710                 status = -ENODEV;
 711                 goto exit;
 712         }
 713
 714         /* Read the descriptor data */
 715         status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc),
 716                                                 rom_desc->Size, buffer);
 717         if (status)
 718                 goto exit;
 719
 720         status = valid_csum(rom_desc, buffer);
 721
 722         desc = (struct edge_ti_manuf_descriptor *)buffer;
 723         dev_dbg(dev, "%s - IonConfig      0x%x\n", __func__, desc->IonConfig);
 724         dev_dbg(dev, "%s - Version          %d\n", __func__, desc->Version);
 725         dev_dbg(dev, "%s - Cpu/Board      0x%x\n", __func__, desc->CpuRev_BoardRev);
 726         dev_dbg(dev, "%s - NumPorts         %d\n", __func__, desc->NumPorts);
 727         dev_dbg(dev, "%s - NumVirtualPorts  %d\n", __func__, desc->NumVirtualPorts);
 728         dev_dbg(dev, "%s - TotalPorts       %d\n", __func__, desc->TotalPorts);
 729
 730 exit:
 731         kfree(rom_desc);
 732         return status;
 733 }
 734
 735 /* Build firmware header used for firmware update */
 736 static int build_i2c_fw_hdr(__u8 *header, struct device *dev)
 737 {
 738         __u8 *buffer;
 739         int buffer_size;
 740         int i;
 741         int err;
 742         __u8 cs = 0;
 743         struct ti_i2c_desc *i2c_header;
 744         struct ti_i2c_image_header *img_header;
 745         struct ti_i2c_firmware_rec *firmware_rec;
 746         const struct firmware *fw;
 747         const char *fw_name = "edgeport/down3.bin";
 748
 749         /* In order to update the I2C firmware we must change the type 2 record
 750          * to type 0xF2.  This will force the UMP to come up in Boot Mode.
 751          * Then while in boot mode, the driver will download the latest
 752          * firmware (padded to 15.5k) into the UMP ram.  And finally when the
 753          * device comes back up in download mode the driver will cause the new
 754          * firmware to be copied from the UMP Ram to I2C and the firmware will
 755          * update the record type from 0xf2 to 0x02.
 756          */
 757
 758         /* Allocate a 15.5k buffer + 2 bytes for version number
 759          * (Firmware Record) */
 760         buffer_size = (((1024 * 16) - 512 ) +
 761                         sizeof(struct ti_i2c_firmware_rec));
 762
 763         buffer = kmalloc(buffer_size, GFP_KERNEL);
 764         if (!buffer)
 765                 return -ENOMEM;
 766
 767         // Set entire image of 0xffs
 768         memset(buffer, 0xff, buffer_size);
 769
 770         err = request_firmware(&fw, fw_name, dev);
 771         if (err) {
 772                 dev_err(dev, "Failed to load image \"%s\" err %d\n",
 773                         fw_name, err);
 774                 kfree(buffer);
 775                 return err;
 776         }
 777
 778         /* Save Download Version Number */
 779         OperationalMajorVersion = fw->data[0];
 780         OperationalMinorVersion = fw->data[1];
 781         OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8);
 782
 783         /* Copy version number into firmware record */
 784         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
 785
 786         firmware_rec->Ver_Major = OperationalMajorVersion;
 787         firmware_rec->Ver_Minor = OperationalMinorVersion;
 788
 789         /* Pointer to fw_down memory image */
 790         img_header = (struct ti_i2c_image_header *)&fw->data[4];
 791
 792         memcpy(buffer + sizeof(struct ti_i2c_firmware_rec),
 793                 &fw->data[4 + sizeof(struct ti_i2c_image_header)],
 794                 le16_to_cpu(img_header->Length));
 795
 796         release_firmware(fw);
 797
 798         for (i=0; i < buffer_size; i++) {
 799                 cs = (__u8)(cs + buffer[i]);
 800         }
 801
 802         kfree(buffer);
 803
 804         /* Build new header */
 805         i2c_header =  (struct ti_i2c_desc *)header;
 806         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
 807
 808         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
 809         i2c_header->Size        = (__u16)buffer_size;
 810         i2c_header->CheckSum    = cs;
 811         firmware_rec->Ver_Major = OperationalMajorVersion;
 812         firmware_rec->Ver_Minor = OperationalMinorVersion;
 813
 814         return 0;
 815 }
 816
 817 /* Try to figure out what type of I2c we have */
 818 static int i2c_type_bootmode(struct edgeport_serial *serial)
 819 {
 820         struct device *dev = &serial->serial->dev->dev;
 821         int status;
 822         u8 *data;
 823
 824         data = kmalloc(1, GFP_KERNEL);
 825         if (!data)
 826                 return -ENOMEM;
 827
 828         /* Try to read type 2 */
 829         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 830                                 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01);
 831         if (status)
 832                 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status);
 833         else
 834                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 835         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 836                 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__);
 837                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 838                 goto out;
 839         }
 840
 841         /* Try to read type 3 */
 842         status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ,
 843                                 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01);
 844         if (status)
 845                 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status);
 846         else
 847                 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data);
 848         if ((!status) && (*data == UMP5152 || *data == UMP3410)) {
 849                 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__);
 850                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
 851                 goto out;
 852         }
 853
 854         dev_dbg(dev, "%s - Unknown\n", __func__);
 855         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 856         status = -ENODEV;
 857 out:
 858         kfree(data);
 859         return status;
 860 }
 861
 862 static int bulk_xfer(struct usb_serial *serial, void *buffer,
 863                                                 int length, int *num_sent)
 864 {
 865         int status;
 866
 867         status = usb_bulk_msg(serial->dev,
 868                         usb_sndbulkpipe(serial->dev,
 869                                 serial->port[0]->bulk_out_endpointAddress),
 870                         buffer, length, num_sent, 1000);
 871         return status;
 872 }
 873
 874 /* Download given firmware image to the device (IN BOOT MODE) */
 875 static int download_code(struct edgeport_serial *serial, __u8 *image,
 876                                                         int image_length)
 877 {
 878         int status = 0;
 879         int pos;
 880         int transfer;
 881         int done;
 882
 883         /* Transfer firmware image */
 884         for (pos = 0; pos < image_length; ) {
 885                 /* Read the next buffer from file */
 886                 transfer = image_length - pos;
 887                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
 888                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
 889
 890                 /* Transfer data */
 891                 status = bulk_xfer(serial->serial, &image[pos],
 892                                                         transfer, &done);
 893                 if (status)
 894                         break;
 895                 /* Advance buffer pointer */
 896                 pos += done;
 897         }
 898
 899         return status;
 900 }
 901
 902 /* FIXME!!! */
 903 static int config_boot_dev(struct usb_device *dev)
 904 {
 905         return 0;
 906 }
 907
 908 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc)
 909 {
 910         return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev);
 911 }
 912
 913 /**
 914  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
 915  *
 916  * This routine downloads the main operating code into the TI5052, using the
 917  * boot code already burned into E2PROM or ROM.
 918  */
 919 static int download_fw(struct edgeport_serial *serial)
 920 {
 921         struct device *dev = &serial->serial->dev->dev;
 922         int status = 0;
 923         int start_address;
 924         struct edge_ti_manuf_descriptor *ti_manuf_desc;
 925         struct usb_interface_descriptor *interface;
 926         int download_cur_ver;
 927         int download_new_ver;
 928
 929         /* This routine is entered by both the BOOT mode and the Download mode
 930          * We can determine which code is running by the reading the config
 931          * descriptor and if we have only one bulk pipe it is in boot mode
 932          */
 933         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
 934
 935         /* Default to type 2 i2c */
 936         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
 937
 938         status = choose_config(serial->serial->dev);
 939         if (status)
 940                 return status;
 941
 942         interface = &serial->serial->interface->cur_altsetting->desc;
 943         if (!interface) {
 944                 dev_err(dev, "%s - no interface set, error!\n", __func__);
 945                 return -ENODEV;
 946         }
 947
 948         /*
 949          * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
 950          * if we have more than one endpoint we are definitely in download
 951          * mode
 952          */
 953         if (interface->bNumEndpoints > 1)
 954                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
 955         else
 956                 /* Otherwise we will remain in configuring mode */
 957                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
 958
 959         /********************************************************************/
 960         /* Download Mode */
 961         /********************************************************************/
 962         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
 963                 struct ti_i2c_desc *rom_desc;
 964
 965                 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__);
 966
 967                 status = check_i2c_image(serial);
 968                 if (status) {
 969                         dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__);
 970                         return status;
 971                 }
 972
 973                 /* Validate Hardware version number
 974                  * Read Manufacturing Descriptor from TI Based Edgeport
 975                  */
 976                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
 977                 if (!ti_manuf_desc)
 978                         return -ENOMEM;
 979
 980                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
 981                 if (status) {
 982                         kfree(ti_manuf_desc);
 983                         return status;
 984                 }
 985
 986                 /* Check version number of ION descriptor */
 987                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
 988                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
 989                                 __func__, ti_cpu_rev(ti_manuf_desc));
 990                         kfree(ti_manuf_desc);
 991                         return -EINVAL;
 992                 }
 993
 994                 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL);
 995                 if (!rom_desc) {
 996                         kfree(ti_manuf_desc);
 997                         return -ENOMEM;
 998                 }
 999
1000                 /* Search for type 2 record (firmware record) */
1001                 start_address = get_descriptor_addr(serial,
1002                                 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc);
1003                 if (start_address != 0) {
1004                         struct ti_i2c_firmware_rec *firmware_version;
1005                         u8 *record;
1006
1007                         dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__);
1008
1009                         firmware_version = kmalloc(sizeof(*firmware_version),
1010                                                                 GFP_KERNEL);
1011                         if (!firmware_version) {
1012                                 kfree(rom_desc);
1013                                 kfree(ti_manuf_desc);
1014                                 return -ENOMEM;
1015                         }
1016
1017                         /* Validate version number
1018                          * Read the descriptor data
1019                          */
1020                         status = read_rom(serial, start_address +
1021                                         sizeof(struct ti_i2c_desc),
1022                                         sizeof(struct ti_i2c_firmware_rec),
1023                                         (__u8 *)firmware_version);
1024                         if (status) {
1025                                 kfree(firmware_version);
1026                                 kfree(rom_desc);
1027                                 kfree(ti_manuf_desc);
1028                                 return status;
1029                         }
1030
1031                         /* Check version number of download with current
1032                            version in I2c */
1033                         download_cur_ver = (firmware_version->Ver_Major << 8) +
1034                                            (firmware_version->Ver_Minor);
1035                         download_new_ver = (OperationalMajorVersion << 8) +
1036                                            (OperationalMinorVersion);
1037
1038                         dev_dbg(dev, "%s - >> FW Versions Device %d.%d  Driver %d.%d\n",
1039                                 __func__, firmware_version->Ver_Major,
1040                                 firmware_version->Ver_Minor,
1041                                 OperationalMajorVersion,
1042                                 OperationalMinorVersion);
1043
1044                         /* Check if we have an old version in the I2C and
1045                            update if necessary */
1046                         if (download_cur_ver < download_new_ver) {
1047                                 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n",
1048                                         __func__,
1049                                         firmware_version->Ver_Major,
1050                                         firmware_version->Ver_Minor,
1051                                         OperationalMajorVersion,
1052                                         OperationalMinorVersion);
1053
1054                                 record = kmalloc(1, GFP_KERNEL);
1055                                 if (!record) {
1056                                         kfree(firmware_version);
1057                                         kfree(rom_desc);
1058                                         kfree(ti_manuf_desc);
1059                                         return -ENOMEM;
1060                                 }
1061                                 /* In order to update the I2C firmware we must
1062                                  * change the type 2 record to type 0xF2. This
1063                                  * will force the UMP to come up in Boot Mode.
1064                                  * Then while in boot mode, the driver will
1065                                  * download the latest firmware (padded to
1066                                  * 15.5k) into the UMP ram. Finally when the
1067                                  * device comes back up in download mode the
1068                                  * driver will cause the new firmware to be
1069                                  * copied from the UMP Ram to I2C and the
1070                                  * firmware will update the record type from
1071                                  * 0xf2 to 0x02.
1072                                  */
1073                                 *record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1074
1075                                 /* Change the I2C Firmware record type to
1076                                    0xf2 to trigger an update */
1077                                 status = write_rom(serial, start_address,
1078                                                 sizeof(*record), record);
1079                                 if (status) {
1080                                         kfree(record);
1081                                         kfree(firmware_version);
1082                                         kfree(rom_desc);
1083                                         kfree(ti_manuf_desc);
1084                                         return status;
1085                                 }
1086
1087                                 /* verify the write -- must do this in order
1088                                  * for write to complete before we do the
1089                                  * hardware reset
1090                                  */
1091                                 status = read_rom(serial,
1092                                                         start_address,
1093                                                         sizeof(*record),
1094                                                         record);
1095                                 if (status) {
1096                                         kfree(record);
1097                                         kfree(firmware_version);
1098                                         kfree(rom_desc);
1099                                         kfree(ti_manuf_desc);
1100                                         return status;
1101                                 }
1102
1103                                 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1104                                         dev_err(dev, "%s - error resetting device\n", __func__);
1105                                         kfree(record);
1106                                         kfree(firmware_version);
1107                                         kfree(rom_desc);
1108                                         kfree(ti_manuf_desc);
1109                                         return -ENODEV;
1110                                 }
1111
1112                                 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__);
1113
1114                                 /* Reset UMP -- Back to BOOT MODE */
1115                                 status = ti_vsend_sync(serial->serial->dev,
1116                                                 UMPC_HARDWARE_RESET,
1117                                                 0, 0, NULL, 0);
1118
1119                                 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status);
1120
1121                                 /* return an error on purpose. */
1122                                 kfree(record);
1123                                 kfree(firmware_version);
1124                                 kfree(rom_desc);
1125                                 kfree(ti_manuf_desc);
1126                                 return -ENODEV;
1127                         }
1128                         kfree(firmware_version);
1129                 }
1130                 /* Search for type 0xF2 record (firmware blank record) */
1131                 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1132 #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + \
1133                                         sizeof(struct ti_i2c_firmware_rec))
1134                         __u8 *header;
1135                         __u8 *vheader;
1136
1137                         header = kmalloc(HEADER_SIZE, GFP_KERNEL);
1138                         if (!header) {
1139                                 kfree(rom_desc);
1140                                 kfree(ti_manuf_desc);
1141                                 return -ENOMEM;
1142                         }
1143
1144                         vheader = kmalloc(HEADER_SIZE, GFP_KERNEL);
1145                         if (!vheader) {
1146                                 kfree(header);
1147                                 kfree(rom_desc);
1148                                 kfree(ti_manuf_desc);
1149                                 return -ENOMEM;
1150                         }
1151
1152                         dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__);
1153
1154                         /*
1155                          * In order to update the I2C firmware we must change
1156                          * the type 2 record to type 0xF2. This will force the
1157                          * UMP to come up in Boot Mode.  Then while in boot
1158                          * mode, the driver will download the latest firmware
1159                          * (padded to 15.5k) into the UMP ram. Finally when the
1160                          * device comes back up in download mode the driver
1161                          * will cause the new firmware to be copied from the
1162                          * UMP Ram to I2C and the firmware will update the
1163                          * record type from 0xf2 to 0x02.
1164                          */
1165                         status = build_i2c_fw_hdr(header, dev);
1166                         if (status) {
1167                                 kfree(vheader);
1168                                 kfree(header);
1169                                 kfree(rom_desc);
1170                                 kfree(ti_manuf_desc);
1171                                 return -EINVAL;
1172                         }
1173
1174                         /* Update I2C with type 0xf2 record with correct
1175                            size and checksum */
1176                         status = write_rom(serial,
1177                                                 start_address,
1178                                                 HEADER_SIZE,
1179                                                 header);
1180                         if (status) {
1181                                 kfree(vheader);
1182                                 kfree(header);
1183                                 kfree(rom_desc);
1184                                 kfree(ti_manuf_desc);
1185                                 return -EINVAL;
1186                         }
1187
1188                         /* verify the write -- must do this in order for
1189                            write to complete before we do the hardware reset */
1190                         status = read_rom(serial, start_address,
1191                                                         HEADER_SIZE, vheader);
1192
1193                         if (status) {
1194                                 dev_dbg(dev, "%s - can't read header back\n", __func__);
1195                                 kfree(vheader);
1196                                 kfree(header);
1197                                 kfree(rom_desc);
1198                                 kfree(ti_manuf_desc);
1199                                 return status;
1200                         }
1201                         if (memcmp(vheader, header, HEADER_SIZE)) {
1202                                 dev_dbg(dev, "%s - write download record failed\n", __func__);
1203                                 kfree(vheader);
1204                                 kfree(header);
1205                                 kfree(rom_desc);
1206                                 kfree(ti_manuf_desc);
1207                                 return -EINVAL;
1208                         }
1209
1210                         kfree(vheader);
1211                         kfree(header);
1212
1213                         dev_dbg(dev, "%s - Start firmware update\n", __func__);
1214
1215                         /* Tell firmware to copy download image into I2C */
1216                         status = ti_vsend_sync(serial->serial->dev,
1217                                         UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0);
1218
1219                         dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status);
1220                         if (status) {
1221                                 dev_err(dev,
1222                                         "%s - UMPC_COPY_DNLD_TO_I2C failed\n",
1223                                                                 __func__);
1224                                 kfree(rom_desc);
1225                                 kfree(ti_manuf_desc);
1226                                 return status;
1227                         }
1228                 }
1229
1230                 // The device is running the download code
1231                 kfree(rom_desc);
1232                 kfree(ti_manuf_desc);
1233                 return 0;
1234         }
1235
1236         /********************************************************************/
1237         /* Boot Mode */
1238         /********************************************************************/
1239         dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__);
1240
1241         /* Configure the TI device so we can use the BULK pipes for download */
1242         status = config_boot_dev(serial->serial->dev);
1243         if (status)
1244                 return status;
1245
1246         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor)
1247                                                         != USB_VENDOR_ID_ION) {
1248                 dev_dbg(dev, "%s - VID = 0x%x\n", __func__,
1249                         le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1250                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1251                 goto stayinbootmode;
1252         }
1253
1254         /* We have an ION device (I2c Must be programmed)
1255            Determine I2C image type */
1256         if (i2c_type_bootmode(serial))
1257                 goto stayinbootmode;
1258
1259         /* Check for ION Vendor ID and that the I2C is valid */
1260         if (!check_i2c_image(serial)) {
1261                 struct ti_i2c_image_header *header;
1262                 int i;
1263                 __u8 cs = 0;
1264                 __u8 *buffer;
1265                 int buffer_size;
1266                 int err;
1267                 const struct firmware *fw;
1268                 const char *fw_name = "edgeport/down3.bin";
1269
1270                 /* Validate Hardware version number
1271                  * Read Manufacturing Descriptor from TI Based Edgeport
1272                  */
1273                 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL);
1274                 if (!ti_manuf_desc)
1275                         return -ENOMEM;
1276
1277                 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc);
1278                 if (status) {
1279                         kfree(ti_manuf_desc);
1280                         goto stayinbootmode;
1281                 }
1282
1283                 /* Check for version 2 */
1284                 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) {
1285                         dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n",
1286                                 __func__, ti_cpu_rev(ti_manuf_desc));
1287                         kfree(ti_manuf_desc);
1288                         goto stayinbootmode;
1289                 }
1290
1291                 kfree(ti_manuf_desc);
1292
1293                 /*
1294                  * In order to update the I2C firmware we must change the type
1295                  * 2 record to type 0xF2. This will force the UMP to come up
1296                  * in Boot Mode.  Then while in boot mode, the driver will
1297                  * download the latest firmware (padded to 15.5k) into the
1298                  * UMP ram. Finally when the device comes back up in download
1299                  * mode the driver will cause the new firmware to be copied
1300                  * from the UMP Ram to I2C and the firmware will update the
1301                  * record type from 0xf2 to 0x02.
1302                  *
1303                  * Do we really have to copy the whole firmware image,
1304                  * or could we do this in place!
1305                  */
1306
1307                 /* Allocate a 15.5k buffer + 3 byte header */
1308                 buffer_size = (((1024 * 16) - 512) +
1309                                         sizeof(struct ti_i2c_image_header));
1310                 buffer = kmalloc(buffer_size, GFP_KERNEL);
1311                 if (!buffer)
1312                         return -ENOMEM;
1313
1314                 /* Initialize the buffer to 0xff (pad the buffer) */
1315                 memset(buffer, 0xff, buffer_size);
1316
1317                 err = request_firmware(&fw, fw_name, dev);
1318                 if (err) {
1319                         dev_err(dev, "Failed to load image \"%s\" err %d\n",
1320                                 fw_name, err);
1321                         kfree(buffer);
1322                         return err;
1323                 }
1324                 memcpy(buffer, &fw->data[4], fw->size - 4);
1325                 release_firmware(fw);
1326
1327                 for (i = sizeof(struct ti_i2c_image_header);
1328                                 i < buffer_size; i++) {
1329                         cs = (__u8)(cs + buffer[i]);
1330                 }
1331
1332                 header = (struct ti_i2c_image_header *)buffer;
1333
1334                 /* update length and checksum after padding */
1335                 header->Length   = cpu_to_le16((__u16)(buffer_size -
1336                                         sizeof(struct ti_i2c_image_header)));
1337                 header->CheckSum = cs;
1338
1339                 /* Download the operational code  */
1340                 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__);
1341                 status = download_code(serial, buffer, buffer_size);
1342
1343                 kfree(buffer);
1344
1345                 if (status) {
1346                         dev_dbg(dev, "%s - Error downloading operational code image\n", __func__);
1347                         return status;
1348                 }
1349
1350                 /* Device will reboot */
1351                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1352
1353                 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__);
1354
1355                 /* return an error on purpose */
1356                 return -ENODEV;
1357         }
1358
1359 stayinbootmode:
1360         /* Eprom is invalid or blank stay in boot mode */
1361         dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__);
1362         serial->product_info.TiMode = TI_MODE_BOOT;
1363
1364         return 0;
1365 }
1366
1367
1368 static int ti_do_config(struct edgeport_port *port, int feature, int on)
1369 {
1370         int port_number = port->port->port_number;
1371
1372         on = !!on;      /* 1 or 0 not bitmask */
1373         return send_cmd(port->port->serial->dev,
1374                         feature, (__u8)(UMPM_UART1_PORT + port_number),
1375                         on, NULL, 0);
1376 }
1377
1378
1379 static int restore_mcr(struct edgeport_port *port, __u8 mcr)
1380 {
1381         int status = 0;
1382
1383         dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr);
1384
1385         status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR);
1386         if (status)
1387                 return status;
1388         status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS);
1389         if (status)
1390                 return status;
1391         return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK);
1392 }
1393
1394 /* Convert TI LSR to standard UART flags */
1395 static __u8 map_line_status(__u8 ti_lsr)
1396 {
1397         __u8 lsr = 0;
1398
1399 #define MAP_FLAG(flagUmp, flagUart)    \
1400         if (ti_lsr & flagUmp) \
1401                 lsr |= flagUart;
1402
1403         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1404         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1405         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1406         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1407         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* rx data available */
1408         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* tx hold reg empty */
1409
1410 #undef MAP_FLAG
1411
1412         return lsr;
1413 }
1414
1415 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr)
1416 {
1417         struct async_icount *icount;
1418         struct tty_struct *tty;
1419
1420         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr);
1421
1422         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR |
1423                         EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1424                 icount = &edge_port->port->icount;
1425
1426                 /* update input line counters */
1427                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1428                         icount->cts++;
1429                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1430                         icount->dsr++;
1431                 if (msr & EDGEPORT_MSR_DELTA_CD)
1432                         icount->dcd++;
1433                 if (msr & EDGEPORT_MSR_DELTA_RI)
1434                         icount->rng++;
1435                 wake_up_interruptible(&edge_port->port->port.delta_msr_wait);
1436         }
1437
1438         /* Save the new modem status */
1439         edge_port->shadow_msr = msr & 0xf0;
1440
1441         tty = tty_port_tty_get(&edge_port->port->port);
1442         /* handle CTS flow control */
1443         if (tty && C_CRTSCTS(tty)) {
1444                 if (msr & EDGEPORT_MSR_CTS) {
1445                         tty->hw_stopped = 0;
1446                         tty_wakeup(tty);
1447                 } else {
1448                         tty->hw_stopped = 1;
1449                 }
1450         }
1451         tty_kref_put(tty);
1452 }
1453
1454 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data,
1455                                                         __u8 lsr, __u8 data)
1456 {
1457         struct async_icount *icount;
1458         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR |
1459                                                 LSR_FRM_ERR | LSR_BREAK));
1460
1461         dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr);
1462
1463         edge_port->shadow_lsr = lsr;
1464
1465         if (new_lsr & LSR_BREAK)
1466                 /*
1467                  * Parity and Framing errors only count if they
1468                  * occur exclusive of a break being received.
1469                  */
1470                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1471
1472         /* Place LSR data byte into Rx buffer */
1473         if (lsr_data)
1474                 edge_tty_recv(edge_port->port, &data, 1);
1475
1476         /* update input line counters */
1477         icount = &edge_port->port->icount;
1478         if (new_lsr & LSR_BREAK)
1479                 icount->brk++;
1480         if (new_lsr & LSR_OVER_ERR)
1481                 icount->overrun++;
1482         if (new_lsr & LSR_PAR_ERR)
1483                 icount->parity++;
1484         if (new_lsr & LSR_FRM_ERR)
1485                 icount->frame++;
1486 }
1487
1488
1489 static void edge_interrupt_callback(struct urb *urb)
1490 {
1491         struct edgeport_serial *edge_serial = urb->context;
1492         struct usb_serial_port *port;
1493         struct edgeport_port *edge_port;
1494         struct device *dev;
1495         unsigned char *data = urb->transfer_buffer;
1496         int length = urb->actual_length;
1497         int port_number;
1498         int function;
1499         int retval;
1500         __u8 lsr;
1501         __u8 msr;
1502         int status = urb->status;
1503
1504         switch (status) {
1505         case 0:
1506                 /* success */
1507                 break;
1508         case -ECONNRESET:
1509         case -ENOENT:
1510         case -ESHUTDOWN:
1511                 /* this urb is terminated, clean up */
1512                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1513                     __func__, status);
1514                 return;
1515         default:
1516                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1517                         "%d\n", __func__, status);
1518                 goto exit;
1519         }
1520
1521         if (!length) {
1522                 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__);
1523                 goto exit;
1524         }
1525
1526         dev = &edge_serial->serial->dev->dev;
1527         usb_serial_debug_data(dev, __func__, length, data);
1528
1529         if (length != 2) {
1530                 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length);
1531                 goto exit;
1532         }
1533
1534         port_number = TIUMP_GET_PORT_FROM_CODE(data[0]);
1535         function    = TIUMP_GET_FUNC_FROM_CODE(data[0]);
1536         dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__,
1537                 port_number, function, data[1]);
1538         port = edge_serial->serial->port[port_number];
1539         edge_port = usb_get_serial_port_data(port);
1540         if (!edge_port) {
1541                 dev_dbg(dev, "%s - edge_port not found\n", __func__);
1542                 return;
1543         }
1544         switch (function) {
1545         case TIUMP_INTERRUPT_CODE_LSR:
1546                 lsr = map_line_status(data[1]);
1547                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1548                         /* Save the LSR event for bulk read
1549                            completion routine */
1550                         dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n",
1551                                 __func__, port_number, lsr);
1552                         edge_port->lsr_event = 1;
1553                         edge_port->lsr_mask = lsr;
1554                 } else {
1555                         dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n",
1556                                 __func__, port_number, lsr);
1557                         handle_new_lsr(edge_port, 0, lsr, 0);
1558                 }
1559                 break;
1560
1561         case TIUMP_INTERRUPT_CODE_MSR:  /* MSR */
1562                 /* Copy MSR from UMP */
1563                 msr = data[1];
1564                 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n",
1565                         __func__, port_number, msr);
1566                 handle_new_msr(edge_port, msr);
1567                 break;
1568
1569         default:
1570                 dev_err(&urb->dev->dev,
1571                         "%s - Unknown Interrupt code from UMP %x\n",
1572                         __func__, data[1]);
1573                 break;
1574
1575         }
1576
1577 exit:
1578         retval = usb_submit_urb(urb, GFP_ATOMIC);
1579         if (retval)
1580                 dev_err(&urb->dev->dev,
1581                         "%s - usb_submit_urb failed with result %d\n",
1582                          __func__, retval);
1583 }
1584
1585 static void edge_bulk_in_callback(struct urb *urb)
1586 {
1587         struct edgeport_port *edge_port = urb->context;
1588         struct device *dev = &edge_port->port->dev;
1589         unsigned char *data = urb->transfer_buffer;
1590         int retval = 0;
1591         int port_number;
1592         int status = urb->status;
1593
1594         switch (status) {
1595         case 0:
1596                 /* success */
1597                 break;
1598         case -ECONNRESET:
1599         case -ENOENT:
1600         case -ESHUTDOWN:
1601                 /* this urb is terminated, clean up */
1602                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status);
1603                 return;
1604         default:
1605                 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status);
1606         }
1607
1608         if (status == -EPIPE)
1609                 goto exit;
1610
1611         if (status) {
1612                 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__);
1613                 return;
1614         }
1615
1616         port_number = edge_port->port->port_number;
1617
1618         if (edge_port->lsr_event) {
1619                 edge_port->lsr_event = 0;
1620                 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n",
1621                         __func__, port_number, edge_port->lsr_mask, *data);
1622                 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data);
1623                 /* Adjust buffer length/pointer */
1624                 --urb->actual_length;
1625                 ++data;
1626         }
1627
1628         if (urb->actual_length) {
1629                 usb_serial_debug_data(dev, __func__, urb->actual_length, data);
1630                 if (edge_port->close_pending)
1631                         dev_dbg(dev, "%s - close pending, dropping data on the floor\n",
1632                                                                 __func__);
1633                 else
1634                         edge_tty_recv(edge_port->port, data,
1635                                         urb->actual_length);
1636                 edge_port->port->icount.rx += urb->actual_length;
1637         }
1638
1639 exit:
1640         /* continue read unless stopped */
1641         spin_lock(&edge_port->ep_lock);
1642         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
1643                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1644         else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING)
1645                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1646
1647         spin_unlock(&edge_port->ep_lock);
1648         if (retval)
1649                 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval);
1650 }
1651
1652 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data,
1653                 int length)
1654 {
1655         int queued;
1656
1657         queued = tty_insert_flip_string(&port->port, data, length);
1658         if (queued < length)
1659                 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",
1660                         __func__, length - queued);
1661         tty_flip_buffer_push(&port->port);
1662 }
1663
1664 static void edge_bulk_out_callback(struct urb *urb)
1665 {
1666         struct usb_serial_port *port = urb->context;
1667         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1668         int status = urb->status;
1669         struct tty_struct *tty;
1670
1671         edge_port->ep_write_urb_in_use = 0;
1672
1673         switch (status) {
1674         case 0:
1675                 /* success */
1676                 break;
1677         case -ECONNRESET:
1678         case -ENOENT:
1679         case -ESHUTDOWN:
1680                 /* this urb is terminated, clean up */
1681                 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
1682                     __func__, status);
1683                 return;
1684         default:
1685                 dev_err_console(port, "%s - nonzero write bulk status "
1686                         "received: %d\n", __func__, status);
1687         }
1688
1689         /* send any buffered data */
1690         tty = tty_port_tty_get(&port->port);
1691         edge_send(port, tty);
1692         tty_kref_put(tty);
1693 }
1694
1695 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port)
1696 {
1697         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1698         struct edgeport_serial *edge_serial;
1699         struct usb_device *dev;
1700         struct urb *urb;
1701         int port_number;
1702         int status;
1703         u16 open_settings;
1704         u8 transaction_timeout;
1705
1706         if (edge_port == NULL)
1707                 return -ENODEV;
1708
1709         port_number = port->port_number;
1710
1711         dev = port->serial->dev;
1712
1713         /* turn off loopback */
1714         status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0);
1715         if (status) {
1716                 dev_err(&port->dev,
1717                                 "%s - cannot send clear loopback command, %d\n",
1718                         __func__, status);
1719                 return status;
1720         }
1721
1722         /* set up the port settings */
1723         if (tty)
1724                 edge_set_termios(tty, port, &tty->termios);
1725
1726         /* open up the port */
1727
1728         /* milliseconds to timeout for DMA transfer */
1729         transaction_timeout = 2;
1730
1731         edge_port->ump_read_timeout =
1732                                 max(20, ((transaction_timeout * 3) / 2));
1733
1734         /* milliseconds to timeout for DMA transfer */
1735         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS |
1736                              UMP_PIPE_TRANS_TIMEOUT_ENA |
1737                              (transaction_timeout << 2));
1738
1739         dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__);
1740
1741         /* Tell TI to open and start the port */
1742         status = send_cmd(dev, UMPC_OPEN_PORT,
1743                 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0);
1744         if (status) {
1745                 dev_err(&port->dev, "%s - cannot send open command, %d\n",
1746                                                         __func__, status);
1747                 return status;
1748         }
1749
1750         /* Start the DMA? */
1751         status = send_cmd(dev, UMPC_START_PORT,
1752                 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1753         if (status) {
1754                 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n",
1755                                                         __func__, status);
1756                 return status;
1757         }
1758
1759         /* Clear TX and RX buffers in UMP */
1760         status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
1761         if (status) {
1762                 dev_err(&port->dev,
1763                         "%s - cannot send clear buffers command, %d\n",
1764                         __func__, status);
1765                 return status;
1766         }
1767
1768         /* Read Initial MSR */
1769         status = ti_vread_sync(dev, UMPC_READ_MSR, 0,
1770                                 (__u16)(UMPM_UART1_PORT + port_number),
1771                                 &edge_port->shadow_msr, 1);
1772         if (status) {
1773                 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n",
1774                                                         __func__, status);
1775                 return status;
1776         }
1777
1778         dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr);
1779
1780         /* Set Initial MCR */
1781         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
1782         dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr);
1783
1784         edge_serial = edge_port->edge_serial;
1785         if (mutex_lock_interruptible(&edge_serial->es_lock))
1786                 return -ERESTARTSYS;
1787         if (edge_serial->num_ports_open == 0) {
1788                 /* we are the first port to open, post the interrupt urb */
1789                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
1790                 if (!urb) {
1791                         dev_err(&port->dev,
1792                                 "%s - no interrupt urb present, exiting\n",
1793                                 __func__);
1794                         status = -EINVAL;
1795                         goto release_es_lock;
1796                 }
1797                 urb->context = edge_serial;
1798                 status = usb_submit_urb(urb, GFP_KERNEL);
1799                 if (status) {
1800                         dev_err(&port->dev,
1801                                 "%s - usb_submit_urb failed with value %d\n",
1802                                         __func__, status);
1803                         goto release_es_lock;
1804                 }
1805         }
1806
1807         /*
1808          * reset the data toggle on the bulk endpoints to work around bug in
1809          * host controllers where things get out of sync some times
1810          */
1811         usb_clear_halt(dev, port->write_urb->pipe);
1812         usb_clear_halt(dev, port->read_urb->pipe);
1813
1814         /* start up our bulk read urb */
1815         urb = port->read_urb;
1816         if (!urb) {
1817                 dev_err(&port->dev, "%s - no read urb present, exiting\n",
1818                                                                 __func__);
1819                 status = -EINVAL;
1820                 goto unlink_int_urb;
1821         }
1822         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
1823         urb->context = edge_port;
1824         status = usb_submit_urb(urb, GFP_KERNEL);
1825         if (status) {
1826                 dev_err(&port->dev,
1827                         "%s - read bulk usb_submit_urb failed with value %d\n",
1828                                 __func__, status);
1829                 goto unlink_int_urb;
1830         }
1831
1832         ++edge_serial->num_ports_open;
1833
1834         goto release_es_lock;
1835
1836 unlink_int_urb:
1837         if (edge_port->edge_serial->num_ports_open == 0)
1838                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1839 release_es_lock:
1840         mutex_unlock(&edge_serial->es_lock);
1841         return status;
1842 }
1843
1844 static void edge_close(struct usb_serial_port *port)
1845 {
1846         struct edgeport_serial *edge_serial;
1847         struct edgeport_port *edge_port;
1848         struct usb_serial *serial = port->serial;
1849         unsigned long flags;
1850         int port_number;
1851
1852         edge_serial = usb_get_serial_data(port->serial);
1853         edge_port = usb_get_serial_port_data(port);
1854         if (edge_serial == NULL || edge_port == NULL)
1855                 return;
1856
1857         /* The bulkreadcompletion routine will check
1858          * this flag and dump add read data */
1859         edge_port->close_pending = 1;
1860
1861         usb_kill_urb(port->read_urb);
1862         usb_kill_urb(port->write_urb);
1863         edge_port->ep_write_urb_in_use = 0;
1864         spin_lock_irqsave(&edge_port->ep_lock, flags);
1865         kfifo_reset_out(&port->write_fifo);
1866         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1867
1868         dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
1869         port_number = port->port_number;
1870         send_cmd(serial->dev, UMPC_CLOSE_PORT,
1871                      (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0);
1872
1873         mutex_lock(&edge_serial->es_lock);
1874         --edge_port->edge_serial->num_ports_open;
1875         if (edge_port->edge_serial->num_ports_open <= 0) {
1876                 /* last port is now closed, let's shut down our interrupt urb */
1877                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
1878                 edge_port->edge_serial->num_ports_open = 0;
1879         }
1880         mutex_unlock(&edge_serial->es_lock);
1881         edge_port->close_pending = 0;
1882 }
1883
1884 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port,
1885                                 const unsigned char *data, int count)
1886 {
1887         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1888
1889         if (count == 0) {
1890                 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);
1891                 return 0;
1892         }
1893
1894         if (edge_port == NULL)
1895                 return -ENODEV;
1896         if (edge_port->close_pending == 1)
1897                 return -ENODEV;
1898
1899         count = kfifo_in_locked(&port->write_fifo, data, count,
1900                                                         &edge_port->ep_lock);
1901         edge_send(port, tty);
1902
1903         return count;
1904 }
1905
1906 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty)
1907 {
1908         int count, result;
1909         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1910         unsigned long flags;
1911
1912         spin_lock_irqsave(&edge_port->ep_lock, flags);
1913
1914         if (edge_port->ep_write_urb_in_use) {
1915                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1916                 return;
1917         }
1918
1919         count = kfifo_out(&port->write_fifo,
1920                                 port->write_urb->transfer_buffer,
1921                                 port->bulk_out_size);
1922
1923         if (count == 0) {
1924                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1925                 return;
1926         }
1927
1928         edge_port->ep_write_urb_in_use = 1;
1929
1930         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1931
1932         usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer);
1933
1934         /* set up our urb */
1935         port->write_urb->transfer_buffer_length = count;
1936
1937         /* send the data out the bulk port */
1938         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
1939         if (result) {
1940                 dev_err_console(port,
1941                         "%s - failed submitting write urb, error %d\n",
1942                                 __func__, result);
1943                 edge_port->ep_write_urb_in_use = 0;
1944                 /* TODO: reschedule edge_send */
1945         } else
1946                 edge_port->port->icount.tx += count;
1947
1948         /* wakeup any process waiting for writes to complete */
1949         /* there is now more room in the buffer for new writes */
1950         if (tty)
1951                 tty_wakeup(tty);
1952 }
1953
1954 static int edge_write_room(struct tty_struct *tty)
1955 {
1956         struct usb_serial_port *port = tty->driver_data;
1957         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1958         int room = 0;
1959         unsigned long flags;
1960
1961         if (edge_port == NULL)
1962                 return 0;
1963         if (edge_port->close_pending == 1)
1964                 return 0;
1965
1966         spin_lock_irqsave(&edge_port->ep_lock, flags);
1967         room = kfifo_avail(&port->write_fifo);
1968         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1969
1970         dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
1971         return room;
1972 }
1973
1974 static int edge_chars_in_buffer(struct tty_struct *tty)
1975 {
1976         struct usb_serial_port *port = tty->driver_data;
1977         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1978         int chars = 0;
1979         unsigned long flags;
1980         if (edge_port == NULL)
1981                 return 0;
1982
1983         spin_lock_irqsave(&edge_port->ep_lock, flags);
1984         chars = kfifo_len(&port->write_fifo);
1985         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
1986
1987         dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
1988         return chars;
1989 }
1990
1991 static bool edge_tx_empty(struct usb_serial_port *port)
1992 {
1993         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1994         int ret;
1995
1996         ret = tx_active(edge_port);
1997         if (ret > 0)
1998                 return false;
1999
2000         return true;
2001 }
2002
2003 static void edge_throttle(struct tty_struct *tty)
2004 {
2005         struct usb_serial_port *port = tty->driver_data;
2006         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2007         int status;
2008
2009         if (edge_port == NULL)
2010                 return;
2011
2012         /* if we are implementing XON/XOFF, send the stop character */
2013         if (I_IXOFF(tty)) {
2014                 unsigned char stop_char = STOP_CHAR(tty);
2015                 status = edge_write(tty, port, &stop_char, 1);
2016                 if (status <= 0) {
2017                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2018                 }
2019         }
2020
2021         /* if we are implementing RTS/CTS, stop reads */
2022         /* and the Edgeport will clear the RTS line */
2023         if (C_CRTSCTS(tty))
2024                 stop_read(edge_port);
2025
2026 }
2027
2028 static void edge_unthrottle(struct tty_struct *tty)
2029 {
2030         struct usb_serial_port *port = tty->driver_data;
2031         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2032         int status;
2033
2034         if (edge_port == NULL)
2035                 return;
2036
2037         /* if we are implementing XON/XOFF, send the start character */
2038         if (I_IXOFF(tty)) {
2039                 unsigned char start_char = START_CHAR(tty);
2040                 status = edge_write(tty, port, &start_char, 1);
2041                 if (status <= 0) {
2042                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2043                 }
2044         }
2045         /* if we are implementing RTS/CTS, restart reads */
2046         /* are the Edgeport will assert the RTS line */
2047         if (C_CRTSCTS(tty)) {
2048                 status = restart_read(edge_port);
2049                 if (status)
2050                         dev_err(&port->dev,
2051                                 "%s - read bulk usb_submit_urb failed: %d\n",
2052                                                         __func__, status);
2053         }
2054
2055 }
2056
2057 static void stop_read(struct edgeport_port *edge_port)
2058 {
2059         unsigned long flags;
2060
2061         spin_lock_irqsave(&edge_port->ep_lock, flags);
2062
2063         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2064                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2065         edge_port->shadow_mcr &= ~MCR_RTS;
2066
2067         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2068 }
2069
2070 static int restart_read(struct edgeport_port *edge_port)
2071 {
2072         struct urb *urb;
2073         int status = 0;
2074         unsigned long flags;
2075
2076         spin_lock_irqsave(&edge_port->ep_lock, flags);
2077
2078         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2079                 urb = edge_port->port->read_urb;
2080                 status = usb_submit_urb(urb, GFP_ATOMIC);
2081         }
2082         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2083         edge_port->shadow_mcr |= MCR_RTS;
2084
2085         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2086
2087         return status;
2088 }
2089
2090 static void change_port_settings(struct tty_struct *tty,
2091                 struct edgeport_port *edge_port, struct ktermios *old_termios)
2092 {
2093         struct device *dev = &edge_port->port->dev;
2094         struct ump_uart_config *config;
2095         int baud;
2096         unsigned cflag;
2097         int status;
2098         int port_number = edge_port->port->port_number;
2099
2100         config = kmalloc (sizeof (*config), GFP_KERNEL);
2101         if (!config) {
2102                 tty->termios = *old_termios;
2103                 return;
2104         }
2105
2106         cflag = tty->termios.c_cflag;
2107
2108         config->wFlags = 0;
2109
2110         /* These flags must be set */
2111         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2112         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2113         config->bUartMode = (__u8)(edge_port->bUartMode);
2114
2115         switch (cflag & CSIZE) {
2116         case CS5:
2117                     config->bDataBits = UMP_UART_CHAR5BITS;
2118                     dev_dbg(dev, "%s - data bits = 5\n", __func__);
2119                     break;
2120         case CS6:
2121                     config->bDataBits = UMP_UART_CHAR6BITS;
2122                     dev_dbg(dev, "%s - data bits = 6\n", __func__);
2123                     break;
2124         case CS7:
2125                     config->bDataBits = UMP_UART_CHAR7BITS;
2126                     dev_dbg(dev, "%s - data bits = 7\n", __func__);
2127                     break;
2128         default:
2129         case CS8:
2130                     config->bDataBits = UMP_UART_CHAR8BITS;
2131                     dev_dbg(dev, "%s - data bits = 8\n", __func__);
2132                             break;
2133         }
2134
2135         if (cflag & PARENB) {
2136                 if (cflag & PARODD) {
2137                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2138                         config->bParity = UMP_UART_ODDPARITY;
2139                         dev_dbg(dev, "%s - parity = odd\n", __func__);
2140                 } else {
2141                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2142                         config->bParity = UMP_UART_EVENPARITY;
2143                         dev_dbg(dev, "%s - parity = even\n", __func__);
2144                 }
2145         } else {
2146                 config->bParity = UMP_UART_NOPARITY;
2147                 dev_dbg(dev, "%s - parity = none\n", __func__);
2148         }
2149
2150         if (cflag & CSTOPB) {
2151                 config->bStopBits = UMP_UART_STOPBIT2;
2152                 dev_dbg(dev, "%s - stop bits = 2\n", __func__);
2153         } else {
2154                 config->bStopBits = UMP_UART_STOPBIT1;
2155                 dev_dbg(dev, "%s - stop bits = 1\n", __func__);
2156         }
2157
2158         /* figure out the flow control settings */
2159         if (cflag & CRTSCTS) {
2160                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2161                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2162                 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__);
2163         } else {
2164                 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__);
2165                 tty->hw_stopped = 0;
2166                 restart_read(edge_port);
2167         }
2168
2169         /* if we are implementing XON/XOFF, set the start and stop
2170            character in the device */
2171         config->cXon  = START_CHAR(tty);
2172         config->cXoff = STOP_CHAR(tty);
2173
2174         /* if we are implementing INBOUND XON/XOFF */
2175         if (I_IXOFF(tty)) {
2176                 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2177                 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2178                         __func__, config->cXon, config->cXoff);
2179         } else
2180                 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__);
2181
2182         /* if we are implementing OUTBOUND XON/XOFF */
2183         if (I_IXON(tty)) {
2184                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2185                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n",
2186                         __func__, config->cXon, config->cXoff);
2187         } else
2188                 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__);
2189
2190         tty->termios.c_cflag &= ~CMSPAR;
2191
2192         /* Round the baud rate */
2193         baud = tty_get_baud_rate(tty);
2194         if (!baud) {
2195                 /* pick a default, any default... */
2196                 baud = 9600;
2197         } else
2198                 tty_encode_baud_rate(tty, baud, baud);
2199
2200         edge_port->baud_rate = baud;
2201         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2202
2203         /* FIXME: Recompute actual baud from divisor here */
2204
2205         dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate);
2206
2207         dev_dbg(dev, "wBaudRate:   %d\n", (int)(461550L / config->wBaudRate));
2208         dev_dbg(dev, "wFlags:    0x%x\n", config->wFlags);
2209         dev_dbg(dev, "bDataBits:   %d\n", config->bDataBits);
2210         dev_dbg(dev, "bParity:     %d\n", config->bParity);
2211         dev_dbg(dev, "bStopBits:   %d\n", config->bStopBits);
2212         dev_dbg(dev, "cXon:        %d\n", config->cXon);
2213         dev_dbg(dev, "cXoff:       %d\n", config->cXoff);
2214         dev_dbg(dev, "bUartMode:   %d\n", config->bUartMode);
2215
2216         /* move the word values into big endian mode */
2217         cpu_to_be16s(&config->wFlags);
2218         cpu_to_be16s(&config->wBaudRate);
2219
2220         status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG,
2221                                 (__u8)(UMPM_UART1_PORT + port_number),
2222                                 0, (__u8 *)config, sizeof(*config));
2223         if (status)
2224                 dev_dbg(dev, "%s - error %d when trying to write config to device\n",
2225                         __func__, status);
2226         kfree(config);
2227 }
2228
2229 static void edge_set_termios(struct tty_struct *tty,
2230                 struct usb_serial_port *port, struct ktermios *old_termios)
2231 {
2232         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2233         unsigned int cflag;
2234
2235         cflag = tty->termios.c_cflag;
2236
2237         dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__,
2238                 tty->termios.c_cflag, tty->termios.c_iflag);
2239         dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__,
2240                 old_termios->c_cflag, old_termios->c_iflag);
2241
2242         if (edge_port == NULL)
2243                 return;
2244         /* change the port settings to the new ones specified */
2245         change_port_settings(tty, edge_port, old_termios);
2246 }
2247
2248 static int edge_tiocmset(struct tty_struct *tty,
2249                                         unsigned int set, unsigned int clear)
2250 {
2251         struct usb_serial_port *port = tty->driver_data;
2252         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2253         unsigned int mcr;
2254         unsigned long flags;
2255
2256         spin_lock_irqsave(&edge_port->ep_lock, flags);
2257         mcr = edge_port->shadow_mcr;
2258         if (set & TIOCM_RTS)
2259                 mcr |= MCR_RTS;
2260         if (set & TIOCM_DTR)
2261                 mcr |= MCR_DTR;
2262         if (set & TIOCM_LOOP)
2263                 mcr |= MCR_LOOPBACK;
2264
2265         if (clear & TIOCM_RTS)
2266                 mcr &= ~MCR_RTS;
2267         if (clear & TIOCM_DTR)
2268                 mcr &= ~MCR_DTR;
2269         if (clear & TIOCM_LOOP)
2270                 mcr &= ~MCR_LOOPBACK;
2271
2272         edge_port->shadow_mcr = mcr;
2273         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2274
2275         restore_mcr(edge_port, mcr);
2276         return 0;
2277 }
2278
2279 static int edge_tiocmget(struct tty_struct *tty)
2280 {
2281         struct usb_serial_port *port = tty->driver_data;
2282         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2283         unsigned int result = 0;
2284         unsigned int msr;
2285         unsigned int mcr;
2286         unsigned long flags;
2287
2288         spin_lock_irqsave(&edge_port->ep_lock, flags);
2289
2290         msr = edge_port->shadow_msr;
2291         mcr = edge_port->shadow_mcr;
2292         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2293                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2294                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2295                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2296                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2297                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2298
2299
2300         dev_dbg(&port->dev, "%s -- %x\n", __func__, result);
2301         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2302
2303         return result;
2304 }
2305
2306 static int get_serial_info(struct edgeport_port *edge_port,
2307                                 struct serial_struct __user *retinfo)
2308 {
2309         struct serial_struct tmp;
2310         unsigned cwait;
2311
2312         if (!retinfo)
2313                 return -EFAULT;
2314
2315         cwait = edge_port->port->port.closing_wait;
2316         if (cwait != ASYNC_CLOSING_WAIT_NONE)
2317                 cwait = jiffies_to_msecs(cwait) / 10;
2318
2319         memset(&tmp, 0, sizeof(tmp));
2320
2321         tmp.type                = PORT_16550A;
2322         tmp.line                = edge_port->port->minor;
2323         tmp.port                = edge_port->port->port_number;
2324         tmp.irq                 = 0;
2325         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2326         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2327         tmp.baud_base           = 9600;
2328         tmp.close_delay         = 5*HZ;
2329         tmp.closing_wait        = cwait;
2330
2331         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2332                 return -EFAULT;
2333         return 0;
2334 }
2335
2336 static int edge_ioctl(struct tty_struct *tty,
2337                                         unsigned int cmd, unsigned long arg)
2338 {
2339         struct usb_serial_port *port = tty->driver_data;
2340         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2341
2342         switch (cmd) {
2343         case TIOCGSERIAL:
2344                 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);
2345                 return get_serial_info(edge_port,
2346                                 (struct serial_struct __user *) arg);
2347         }
2348         return -ENOIOCTLCMD;
2349 }
2350
2351 static void edge_break(struct tty_struct *tty, int break_state)
2352 {
2353         struct usb_serial_port *port = tty->driver_data;
2354         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2355         int status;
2356         int bv = 0;     /* Off */
2357
2358         if (break_state == -1)
2359                 bv = 1; /* On */
2360         status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv);
2361         if (status)
2362                 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n",
2363                         __func__, status);
2364 }
2365
2366 static int edge_startup(struct usb_serial *serial)
2367 {
2368         struct edgeport_serial *edge_serial;
2369         int status;
2370
2371         /* create our private serial structure */
2372         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2373         if (!edge_serial)
2374                 return -ENOMEM;
2375
2376         mutex_init(&edge_serial->es_lock);
2377         edge_serial->serial = serial;
2378         usb_set_serial_data(serial, edge_serial);
2379
2380         status = download_fw(edge_serial);
2381         if (status) {
2382                 kfree(edge_serial);
2383                 return status;
2384         }
2385
2386         return 0;
2387 }
2388
2389 static void edge_disconnect(struct usb_serial *serial)
2390 {
2391 }
2392
2393 static void edge_release(struct usb_serial *serial)
2394 {
2395         kfree(usb_get_serial_data(serial));
2396 }
2397
2398 static int edge_port_probe(struct usb_serial_port *port)
2399 {
2400         struct edgeport_port *edge_port;
2401         int ret;
2402
2403         edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);
2404         if (!edge_port)
2405                 return -ENOMEM;
2406
2407         spin_lock_init(&edge_port->ep_lock);
2408         edge_port->port = port;
2409         edge_port->edge_serial = usb_get_serial_data(port->serial);
2410         edge_port->bUartMode = default_uart_mode;
2411
2412         switch (port->port_number) {
2413         case 0:
2414                 edge_port->uart_base = UMPMEM_BASE_UART1;
2415                 edge_port->dma_address = UMPD_OEDB1_ADDRESS;
2416                 break;
2417         case 1:
2418                 edge_port->uart_base = UMPMEM_BASE_UART2;
2419                 edge_port->dma_address = UMPD_OEDB2_ADDRESS;
2420                 break;
2421         default:
2422                 dev_err(&port->dev, "unknown port number\n");
2423                 ret = -ENODEV;
2424                 goto err;
2425         }
2426
2427         dev_dbg(&port->dev,
2428                 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n",
2429                 __func__, port->port_number, edge_port->uart_base,
2430                 edge_port->dma_address);
2431
2432         usb_set_serial_port_data(port, edge_port);
2433
2434         ret = edge_create_sysfs_attrs(port);
2435         if (ret)
2436                 goto err;
2437
2438         port->port.closing_wait = msecs_to_jiffies(closing_wait * 10);
2439         port->port.drain_delay = 1;
2440
2441         return 0;
2442 err:
2443         kfree(edge_port);
2444
2445         return ret;
2446 }
2447
2448 static int edge_port_remove(struct usb_serial_port *port)
2449 {
2450         struct edgeport_port *edge_port;
2451
2452         edge_port = usb_get_serial_port_data(port);
2453         edge_remove_sysfs_attrs(port);
2454         kfree(edge_port);
2455
2456         return 0;
2457 }
2458
2459 /* Sysfs Attributes */
2460
2461 static ssize_t uart_mode_show(struct device *dev,
2462         struct device_attribute *attr, char *buf)
2463 {
2464         struct usb_serial_port *port = to_usb_serial_port(dev);
2465         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2466
2467         return sprintf(buf, "%d\n", edge_port->bUartMode);
2468 }
2469
2470 static ssize_t uart_mode_store(struct device *dev,
2471         struct device_attribute *attr, const char *valbuf, size_t count)
2472 {
2473         struct usb_serial_port *port = to_usb_serial_port(dev);
2474         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2475         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2476
2477         dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v);
2478
2479         if (v < 256)
2480                 edge_port->bUartMode = v;
2481         else
2482                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2483
2484         return count;
2485 }
2486 static DEVICE_ATTR_RW(uart_mode);
2487
2488 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2489 {
2490         return device_create_file(&port->dev, &dev_attr_uart_mode);
2491 }
2492
2493 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2494 {
2495         device_remove_file(&port->dev, &dev_attr_uart_mode);
2496         return 0;
2497 }
2498
2499
2500 static struct usb_serial_driver edgeport_1port_device = {
2501         .driver = {
2502                 .owner          = THIS_MODULE,
2503                 .name           = "edgeport_ti_1",
2504         },
2505         .description            = "Edgeport TI 1 port adapter",
2506         .id_table               = edgeport_1port_id_table,
2507         .num_ports              = 1,
2508         .open                   = edge_open,
2509         .close                  = edge_close,
2510         .throttle               = edge_throttle,
2511         .unthrottle             = edge_unthrottle,
2512         .attach                 = edge_startup,
2513         .disconnect             = edge_disconnect,
2514         .release                = edge_release,
2515         .port_probe             = edge_port_probe,
2516         .port_remove            = edge_port_remove,
2517         .ioctl                  = edge_ioctl,
2518         .set_termios            = edge_set_termios,
2519         .tiocmget               = edge_tiocmget,
2520         .tiocmset               = edge_tiocmset,
2521         .tiocmiwait             = usb_serial_generic_tiocmiwait,
2522         .get_icount             = usb_serial_generic_get_icount,
2523         .write                  = edge_write,
2524         .write_room             = edge_write_room,
2525         .chars_in_buffer        = edge_chars_in_buffer,
2526         .tx_empty               = edge_tx_empty,
2527         .break_ctl              = edge_break,
2528         .read_int_callback      = edge_interrupt_callback,
2529         .read_bulk_callback     = edge_bulk_in_callback,
2530         .write_bulk_callback    = edge_bulk_out_callback,
2531 };
2532
2533 static struct usb_serial_driver edgeport_2port_device = {
2534         .driver = {
2535                 .owner          = THIS_MODULE,
2536                 .name           = "edgeport_ti_2",
2537         },
2538         .description            = "Edgeport TI 2 port adapter",
2539         .id_table               = edgeport_2port_id_table,
2540         .num_ports              = 2,
2541         .open                   = edge_open,
2542         .close                  = edge_close,
2543         .throttle               = edge_throttle,
2544         .unthrottle             = edge_unthrottle,
2545         .attach                 = edge_startup,
2546         .disconnect             = edge_disconnect,
2547         .release                = edge_release,
2548         .port_probe             = edge_port_probe,
2549         .port_remove            = edge_port_remove,
2550         .ioctl                  = edge_ioctl,
2551         .set_termios            = edge_set_termios,
2552         .tiocmget               = edge_tiocmget,
2553         .tiocmset               = edge_tiocmset,
2554         .tiocmiwait             = usb_serial_generic_tiocmiwait,
2555         .get_icount             = usb_serial_generic_get_icount,
2556         .write                  = edge_write,
2557         .write_room             = edge_write_room,
2558         .chars_in_buffer        = edge_chars_in_buffer,
2559         .tx_empty               = edge_tx_empty,
2560         .break_ctl              = edge_break,
2561         .read_int_callback      = edge_interrupt_callback,
2562         .read_bulk_callback     = edge_bulk_in_callback,
2563         .write_bulk_callback    = edge_bulk_out_callback,
2564 };
2565
2566 static struct usb_serial_driver * const serial_drivers[] = {
2567         &edgeport_1port_device, &edgeport_2port_device, NULL
2568 };
2569
2570 module_usb_serial_driver(serial_drivers, id_table_combined);
2571
2572 MODULE_AUTHOR(DRIVER_AUTHOR);
2573 MODULE_DESCRIPTION(DRIVER_DESC);
2574 MODULE_LICENSE("GPL");
2575 MODULE_FIRMWARE("edgeport/down3.bin");
2576
2577 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
2578 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
2579
2580 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
2581 MODULE_PARM_DESC(ignore_cpu_rev,
2582                         "Ignore the cpu revision when connecting to a device");
2583
2584 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
2585 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");