io_ti.c revision ddca16e4f10ac83d4d3f02065b3886f85961f7ec
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 */ 69struct product_info { 70 int TiMode; /* Current TI Mode */ 71 __u8 hardware_type; /* Type of hardware */ 72} __attribute__((packed)); 73 74struct 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 96struct 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 */ 108static 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 128static 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 */ 151static 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 188MODULE_DEVICE_TABLE(usb, id_table_combined); 189 190static unsigned char OperationalMajorVersion; 191static unsigned char OperationalMinorVersion; 192static unsigned short OperationalBuildNumber; 193 194static int closing_wait = EDGE_CLOSING_WAIT; 195static bool ignore_cpu_rev; 196static int default_uart_mode; /* RS232 */ 197 198static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 199 int length); 200 201static void stop_read(struct edgeport_port *edge_port); 202static int restart_read(struct edgeport_port *edge_port); 203 204static void edge_set_termios(struct tty_struct *tty, 205 struct usb_serial_port *port, struct ktermios *old_termios); 206static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 207 208/* sysfs attributes */ 209static int edge_create_sysfs_attrs(struct usb_serial_port *port); 210static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 211 212 213static 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 231static 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 249static 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 */ 257static 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 */ 279static 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 323static 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 */ 331static 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 */ 357static int write_boot_mem(struct edgeport_serial *serial, 358 int start_address, int length, __u8 *buffer) 359{ 360 int status = 0; 361 int i; 362 u8 *temp; 363 364 /* Must do a read before write */ 365 if (!serial->TiReadI2C) { 366 temp = kmalloc(1, GFP_KERNEL); 367 if (!temp) { 368 dev_err(&serial->serial->dev->dev, 369 "%s - out of memory\n", __func__); 370 return -ENOMEM; 371 } 372 status = read_boot_mem(serial, 0, 1, temp); 373 kfree(temp); 374 if (status) 375 return status; 376 } 377 378 for (i = 0; i < length; ++i) { 379 status = ti_vsend_sync(serial->serial->dev, 380 UMPC_MEMORY_WRITE, buffer[i], 381 (__u16)(i + start_address), NULL, 0); 382 if (status) 383 return status; 384 } 385 386 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 387 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 388 389 return status; 390} 391 392 393/* Write edgeport I2C memory to TI chip */ 394static int write_i2c_mem(struct edgeport_serial *serial, 395 int start_address, int length, __u8 address_type, __u8 *buffer) 396{ 397 struct device *dev = &serial->serial->dev->dev; 398 int status = 0; 399 int write_length; 400 __be16 be_start_address; 401 402 /* We can only send a maximum of 1 aligned byte page at a time */ 403 404 /* calculate the number of bytes left in the first page */ 405 write_length = EPROM_PAGE_SIZE - 406 (start_address & (EPROM_PAGE_SIZE - 1)); 407 408 if (write_length > length) 409 write_length = length; 410 411 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 412 __func__, start_address, write_length); 413 usb_serial_debug_data(dev, __func__, write_length, buffer); 414 415 /* Write first page */ 416 be_start_address = cpu_to_be16(start_address); 417 status = ti_vsend_sync(serial->serial->dev, 418 UMPC_MEMORY_WRITE, (__u16)address_type, 419 (__force __u16)be_start_address, 420 buffer, write_length); 421 if (status) { 422 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 423 return status; 424 } 425 426 length -= write_length; 427 start_address += write_length; 428 buffer += write_length; 429 430 /* We should be aligned now -- can write 431 max page size bytes at a time */ 432 while (length) { 433 if (length > EPROM_PAGE_SIZE) 434 write_length = EPROM_PAGE_SIZE; 435 else 436 write_length = length; 437 438 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 439 __func__, start_address, write_length); 440 usb_serial_debug_data(dev, __func__, write_length, buffer); 441 442 /* Write next page */ 443 be_start_address = cpu_to_be16(start_address); 444 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 445 (__u16)address_type, 446 (__force __u16)be_start_address, 447 buffer, write_length); 448 if (status) { 449 dev_err(dev, "%s - ERROR %d\n", __func__, status); 450 return status; 451 } 452 453 length -= write_length; 454 start_address += write_length; 455 buffer += write_length; 456 } 457 return status; 458} 459 460/* Examine the UMP DMA registers and LSR 461 * 462 * Check the MSBit of the X and Y DMA byte count registers. 463 * A zero in this bit indicates that the TX DMA buffers are empty 464 * then check the TX Empty bit in the UART. 465 */ 466static int tx_active(struct edgeport_port *port) 467{ 468 int status; 469 struct out_endpoint_desc_block *oedb; 470 __u8 *lsr; 471 int bytes_left = 0; 472 473 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 474 if (!oedb) { 475 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 476 return -ENOMEM; 477 } 478 479 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 480 as not all platforms can do DMA 481 from stack */ 482 if (!lsr) { 483 kfree(oedb); 484 return -ENOMEM; 485 } 486 /* Read the DMA Count Registers */ 487 status = read_ram(port->port->serial->dev, port->dma_address, 488 sizeof(*oedb), (void *)oedb); 489 if (status) 490 goto exit_is_tx_active; 491 492 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 493 494 /* and the LSR */ 495 status = read_ram(port->port->serial->dev, 496 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 497 498 if (status) 499 goto exit_is_tx_active; 500 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 501 502 /* If either buffer has data or we are transmitting then return TRUE */ 503 if ((oedb->XByteCount & 0x80) != 0) 504 bytes_left += 64; 505 506 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 507 bytes_left += 1; 508 509 /* We return Not Active if we get any kind of error */ 510exit_is_tx_active: 511 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 512 513 kfree(lsr); 514 kfree(oedb); 515 return bytes_left; 516} 517 518static int choose_config(struct usb_device *dev) 519{ 520 /* 521 * There may be multiple configurations on this device, in which case 522 * we would need to read and parse all of them to find out which one 523 * we want. However, we just support one config at this point, 524 * configuration # 1, which is Config Descriptor 0. 525 */ 526 527 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 528 __func__, dev->config->desc.bNumInterfaces); 529 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 530 __func__, dev->config->desc.bMaxPower * 2); 531 532 if (dev->config->desc.bNumInterfaces != 1) { 533 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 534 return -ENODEV; 535 } 536 537 return 0; 538} 539 540static int read_rom(struct edgeport_serial *serial, 541 int start_address, int length, __u8 *buffer) 542{ 543 int status; 544 545 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 546 status = read_download_mem(serial->serial->dev, 547 start_address, 548 length, 549 serial->TI_I2C_Type, 550 buffer); 551 } else { 552 status = read_boot_mem(serial, start_address, length, 553 buffer); 554 } 555 return status; 556} 557 558static int write_rom(struct edgeport_serial *serial, int start_address, 559 int length, __u8 *buffer) 560{ 561 if (serial->product_info.TiMode == TI_MODE_BOOT) 562 return write_boot_mem(serial, start_address, length, 563 buffer); 564 565 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 566 return write_i2c_mem(serial, start_address, length, 567 serial->TI_I2C_Type, buffer); 568 return -EINVAL; 569} 570 571 572 573/* Read a descriptor header from I2C based on type */ 574static int get_descriptor_addr(struct edgeport_serial *serial, 575 int desc_type, struct ti_i2c_desc *rom_desc) 576{ 577 int start_address; 578 int status; 579 580 /* Search for requested descriptor in I2C */ 581 start_address = 2; 582 do { 583 status = read_rom(serial, 584 start_address, 585 sizeof(struct ti_i2c_desc), 586 (__u8 *)rom_desc); 587 if (status) 588 return 0; 589 590 if (rom_desc->Type == desc_type) 591 return start_address; 592 593 start_address = start_address + sizeof(struct ti_i2c_desc) 594 + rom_desc->Size; 595 596 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 597 598 return 0; 599} 600 601/* Validate descriptor checksum */ 602static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 603{ 604 __u16 i; 605 __u8 cs = 0; 606 607 for (i = 0; i < rom_desc->Size; i++) 608 cs = (__u8)(cs + buffer[i]); 609 610 if (cs != rom_desc->CheckSum) { 611 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 612 return -EINVAL; 613 } 614 return 0; 615} 616 617/* Make sure that the I2C image is good */ 618static int check_i2c_image(struct edgeport_serial *serial) 619{ 620 struct device *dev = &serial->serial->dev->dev; 621 int status = 0; 622 struct ti_i2c_desc *rom_desc; 623 int start_address = 2; 624 __u8 *buffer; 625 __u16 ttype; 626 627 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 628 if (!rom_desc) { 629 dev_err(dev, "%s - out of memory\n", __func__); 630 return -ENOMEM; 631 } 632 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 633 if (!buffer) { 634 dev_err(dev, "%s - out of memory when allocating buffer\n", 635 __func__); 636 kfree(rom_desc); 637 return -ENOMEM; 638 } 639 640 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 641 status = read_rom(serial, 0, 1, buffer); 642 if (status) 643 goto out; 644 645 if (*buffer != UMP5152 && *buffer != UMP3410) { 646 dev_err(dev, "%s - invalid buffer signature\n", __func__); 647 status = -ENODEV; 648 goto out; 649 } 650 651 do { 652 /* Validate the I2C */ 653 status = read_rom(serial, 654 start_address, 655 sizeof(struct ti_i2c_desc), 656 (__u8 *)rom_desc); 657 if (status) 658 break; 659 660 if ((start_address + sizeof(struct ti_i2c_desc) + 661 rom_desc->Size) > TI_MAX_I2C_SIZE) { 662 status = -ENODEV; 663 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 664 break; 665 } 666 667 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 668 669 /* Skip type 2 record */ 670 ttype = rom_desc->Type & 0x0f; 671 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 672 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 673 /* Read the descriptor data */ 674 status = read_rom(serial, start_address + 675 sizeof(struct ti_i2c_desc), 676 rom_desc->Size, buffer); 677 if (status) 678 break; 679 680 status = valid_csum(rom_desc, buffer); 681 if (status) 682 break; 683 } 684 start_address = start_address + sizeof(struct ti_i2c_desc) + 685 rom_desc->Size; 686 687 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 688 (start_address < TI_MAX_I2C_SIZE)); 689 690 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 691 (start_address > TI_MAX_I2C_SIZE)) 692 status = -ENODEV; 693 694out: 695 kfree(buffer); 696 kfree(rom_desc); 697 return status; 698} 699 700static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 701{ 702 int status; 703 int start_address; 704 struct ti_i2c_desc *rom_desc; 705 struct edge_ti_manuf_descriptor *desc; 706 struct device *dev = &serial->serial->dev->dev; 707 708 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 709 if (!rom_desc) { 710 dev_err(dev, "%s - out of memory\n", __func__); 711 return -ENOMEM; 712 } 713 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 714 rom_desc); 715 716 if (!start_address) { 717 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 718 status = -ENODEV; 719 goto exit; 720 } 721 722 /* Read the descriptor data */ 723 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 724 rom_desc->Size, buffer); 725 if (status) 726 goto exit; 727 728 status = valid_csum(rom_desc, buffer); 729 730 desc = (struct edge_ti_manuf_descriptor *)buffer; 731 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 732 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 733 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 734 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 735 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 736 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 737 738exit: 739 kfree(rom_desc); 740 return status; 741} 742 743/* Build firmware header used for firmware update */ 744static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 745{ 746 __u8 *buffer; 747 int buffer_size; 748 int i; 749 int err; 750 __u8 cs = 0; 751 struct ti_i2c_desc *i2c_header; 752 struct ti_i2c_image_header *img_header; 753 struct ti_i2c_firmware_rec *firmware_rec; 754 const struct firmware *fw; 755 const char *fw_name = "edgeport/down3.bin"; 756 757 /* In order to update the I2C firmware we must change the type 2 record 758 * to type 0xF2. This will force the UMP to come up in Boot Mode. 759 * Then while in boot mode, the driver will download the latest 760 * firmware (padded to 15.5k) into the UMP ram. And finally when the 761 * device comes back up in download mode the driver will cause the new 762 * firmware to be copied from the UMP Ram to I2C and the firmware will 763 * update the record type from 0xf2 to 0x02. 764 */ 765 766 /* Allocate a 15.5k buffer + 2 bytes for version number 767 * (Firmware Record) */ 768 buffer_size = (((1024 * 16) - 512 ) + 769 sizeof(struct ti_i2c_firmware_rec)); 770 771 buffer = kmalloc(buffer_size, GFP_KERNEL); 772 if (!buffer) { 773 dev_err(dev, "%s - out of memory\n", __func__); 774 return -ENOMEM; 775 } 776 777 // Set entire image of 0xffs 778 memset(buffer, 0xff, buffer_size); 779 780 err = request_firmware(&fw, fw_name, dev); 781 if (err) { 782 dev_err(dev, "Failed to load image \"%s\" err %d\n", 783 fw_name, err); 784 kfree(buffer); 785 return err; 786 } 787 788 /* Save Download Version Number */ 789 OperationalMajorVersion = fw->data[0]; 790 OperationalMinorVersion = fw->data[1]; 791 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 792 793 /* Copy version number into firmware record */ 794 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 795 796 firmware_rec->Ver_Major = OperationalMajorVersion; 797 firmware_rec->Ver_Minor = OperationalMinorVersion; 798 799 /* Pointer to fw_down memory image */ 800 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 801 802 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 803 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 804 le16_to_cpu(img_header->Length)); 805 806 release_firmware(fw); 807 808 for (i=0; i < buffer_size; i++) { 809 cs = (__u8)(cs + buffer[i]); 810 } 811 812 kfree(buffer); 813 814 /* Build new header */ 815 i2c_header = (struct ti_i2c_desc *)header; 816 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 817 818 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 819 i2c_header->Size = (__u16)buffer_size; 820 i2c_header->CheckSum = cs; 821 firmware_rec->Ver_Major = OperationalMajorVersion; 822 firmware_rec->Ver_Minor = OperationalMinorVersion; 823 824 return 0; 825} 826 827/* Try to figure out what type of I2c we have */ 828static int i2c_type_bootmode(struct edgeport_serial *serial) 829{ 830 struct device *dev = &serial->serial->dev->dev; 831 int status; 832 u8 *data; 833 834 data = kmalloc(1, GFP_KERNEL); 835 if (!data) { 836 dev_err(dev, "%s - out of memory\n", __func__); 837 return -ENOMEM; 838 } 839 840 /* Try to read type 2 */ 841 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 842 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 843 if (status) 844 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 845 else 846 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 847 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 848 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 849 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 850 goto out; 851 } 852 853 /* Try to read type 3 */ 854 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 855 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 856 if (status) 857 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 858 else 859 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 860 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 861 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 862 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 863 goto out; 864 } 865 866 dev_dbg(dev, "%s - Unknown\n", __func__); 867 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 868 status = -ENODEV; 869out: 870 kfree(data); 871 return status; 872} 873 874static int bulk_xfer(struct usb_serial *serial, void *buffer, 875 int length, int *num_sent) 876{ 877 int status; 878 879 status = usb_bulk_msg(serial->dev, 880 usb_sndbulkpipe(serial->dev, 881 serial->port[0]->bulk_out_endpointAddress), 882 buffer, length, num_sent, 1000); 883 return status; 884} 885 886/* Download given firmware image to the device (IN BOOT MODE) */ 887static int download_code(struct edgeport_serial *serial, __u8 *image, 888 int image_length) 889{ 890 int status = 0; 891 int pos; 892 int transfer; 893 int done; 894 895 /* Transfer firmware image */ 896 for (pos = 0; pos < image_length; ) { 897 /* Read the next buffer from file */ 898 transfer = image_length - pos; 899 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 900 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 901 902 /* Transfer data */ 903 status = bulk_xfer(serial->serial, &image[pos], 904 transfer, &done); 905 if (status) 906 break; 907 /* Advance buffer pointer */ 908 pos += done; 909 } 910 911 return status; 912} 913 914/* FIXME!!! */ 915static int config_boot_dev(struct usb_device *dev) 916{ 917 return 0; 918} 919 920static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 921{ 922 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 923} 924 925/** 926 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 927 * 928 * This routine downloads the main operating code into the TI5052, using the 929 * boot code already burned into E2PROM or ROM. 930 */ 931static int download_fw(struct edgeport_serial *serial) 932{ 933 struct device *dev = &serial->serial->dev->dev; 934 int status = 0; 935 int start_address; 936 struct edge_ti_manuf_descriptor *ti_manuf_desc; 937 struct usb_interface_descriptor *interface; 938 int download_cur_ver; 939 int download_new_ver; 940 941 /* This routine is entered by both the BOOT mode and the Download mode 942 * We can determine which code is running by the reading the config 943 * descriptor and if we have only one bulk pipe it is in boot mode 944 */ 945 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 946 947 /* Default to type 2 i2c */ 948 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 949 950 status = choose_config(serial->serial->dev); 951 if (status) 952 return status; 953 954 interface = &serial->serial->interface->cur_altsetting->desc; 955 if (!interface) { 956 dev_err(dev, "%s - no interface set, error!\n", __func__); 957 return -ENODEV; 958 } 959 960 /* 961 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 962 * if we have more than one endpoint we are definitely in download 963 * mode 964 */ 965 if (interface->bNumEndpoints > 1) 966 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 967 else 968 /* Otherwise we will remain in configuring mode */ 969 serial->product_info.TiMode = TI_MODE_CONFIGURING; 970 971 /********************************************************************/ 972 /* Download Mode */ 973 /********************************************************************/ 974 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 975 struct ti_i2c_desc *rom_desc; 976 977 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 978 979 status = check_i2c_image(serial); 980 if (status) { 981 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 982 return status; 983 } 984 985 /* Validate Hardware version number 986 * Read Manufacturing Descriptor from TI Based Edgeport 987 */ 988 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 989 if (!ti_manuf_desc) { 990 dev_err(dev, "%s - out of memory.\n", __func__); 991 return -ENOMEM; 992 } 993 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 994 if (status) { 995 kfree(ti_manuf_desc); 996 return status; 997 } 998 999 /* Check version number of ION descriptor */ 1000 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1001 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1002 __func__, ti_cpu_rev(ti_manuf_desc)); 1003 kfree(ti_manuf_desc); 1004 return -EINVAL; 1005 } 1006 1007 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1008 if (!rom_desc) { 1009 dev_err(dev, "%s - out of memory.\n", __func__); 1010 kfree(ti_manuf_desc); 1011 return -ENOMEM; 1012 } 1013 1014 /* Search for type 2 record (firmware record) */ 1015 start_address = get_descriptor_addr(serial, 1016 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1017 if (start_address != 0) { 1018 struct ti_i2c_firmware_rec *firmware_version; 1019 u8 *record; 1020 1021 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1022 1023 firmware_version = kmalloc(sizeof(*firmware_version), 1024 GFP_KERNEL); 1025 if (!firmware_version) { 1026 dev_err(dev, "%s - out of memory.\n", __func__); 1027 kfree(rom_desc); 1028 kfree(ti_manuf_desc); 1029 return -ENOMEM; 1030 } 1031 1032 /* Validate version number 1033 * Read the descriptor data 1034 */ 1035 status = read_rom(serial, start_address + 1036 sizeof(struct ti_i2c_desc), 1037 sizeof(struct ti_i2c_firmware_rec), 1038 (__u8 *)firmware_version); 1039 if (status) { 1040 kfree(firmware_version); 1041 kfree(rom_desc); 1042 kfree(ti_manuf_desc); 1043 return status; 1044 } 1045 1046 /* Check version number of download with current 1047 version in I2c */ 1048 download_cur_ver = (firmware_version->Ver_Major << 8) + 1049 (firmware_version->Ver_Minor); 1050 download_new_ver = (OperationalMajorVersion << 8) + 1051 (OperationalMinorVersion); 1052 1053 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1054 __func__, firmware_version->Ver_Major, 1055 firmware_version->Ver_Minor, 1056 OperationalMajorVersion, 1057 OperationalMinorVersion); 1058 1059 /* Check if we have an old version in the I2C and 1060 update if necessary */ 1061 if (download_cur_ver < download_new_ver) { 1062 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1063 __func__, 1064 firmware_version->Ver_Major, 1065 firmware_version->Ver_Minor, 1066 OperationalMajorVersion, 1067 OperationalMinorVersion); 1068 1069 record = kmalloc(1, GFP_KERNEL); 1070 if (!record) { 1071 dev_err(dev, "%s - out of memory.\n", 1072 __func__); 1073 kfree(firmware_version); 1074 kfree(rom_desc); 1075 kfree(ti_manuf_desc); 1076 return -ENOMEM; 1077 } 1078 /* In order to update the I2C firmware we must 1079 * change the type 2 record to type 0xF2. This 1080 * will force the UMP to come up in Boot Mode. 1081 * Then while in boot mode, the driver will 1082 * download the latest firmware (padded to 1083 * 15.5k) into the UMP ram. Finally when the 1084 * device comes back up in download mode the 1085 * driver will cause the new firmware to be 1086 * copied from the UMP Ram to I2C and the 1087 * firmware will update the record type from 1088 * 0xf2 to 0x02. 1089 */ 1090 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1091 1092 /* Change the I2C Firmware record type to 1093 0xf2 to trigger an update */ 1094 status = write_rom(serial, start_address, 1095 sizeof(*record), record); 1096 if (status) { 1097 kfree(record); 1098 kfree(firmware_version); 1099 kfree(rom_desc); 1100 kfree(ti_manuf_desc); 1101 return status; 1102 } 1103 1104 /* verify the write -- must do this in order 1105 * for write to complete before we do the 1106 * hardware reset 1107 */ 1108 status = read_rom(serial, 1109 start_address, 1110 sizeof(*record), 1111 record); 1112 if (status) { 1113 kfree(record); 1114 kfree(firmware_version); 1115 kfree(rom_desc); 1116 kfree(ti_manuf_desc); 1117 return status; 1118 } 1119 1120 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1121 dev_err(dev, "%s - error resetting device\n", __func__); 1122 kfree(record); 1123 kfree(firmware_version); 1124 kfree(rom_desc); 1125 kfree(ti_manuf_desc); 1126 return -ENODEV; 1127 } 1128 1129 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1130 1131 /* Reset UMP -- Back to BOOT MODE */ 1132 status = ti_vsend_sync(serial->serial->dev, 1133 UMPC_HARDWARE_RESET, 1134 0, 0, NULL, 0); 1135 1136 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1137 1138 /* return an error on purpose. */ 1139 kfree(record); 1140 kfree(firmware_version); 1141 kfree(rom_desc); 1142 kfree(ti_manuf_desc); 1143 return -ENODEV; 1144 } 1145 kfree(firmware_version); 1146 } 1147 /* Search for type 0xF2 record (firmware blank record) */ 1148 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1149#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1150 sizeof(struct ti_i2c_firmware_rec)) 1151 __u8 *header; 1152 __u8 *vheader; 1153 1154 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1155 if (!header) { 1156 dev_err(dev, "%s - out of memory.\n", __func__); 1157 kfree(rom_desc); 1158 kfree(ti_manuf_desc); 1159 return -ENOMEM; 1160 } 1161 1162 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1163 if (!vheader) { 1164 dev_err(dev, "%s - out of memory.\n", __func__); 1165 kfree(header); 1166 kfree(rom_desc); 1167 kfree(ti_manuf_desc); 1168 return -ENOMEM; 1169 } 1170 1171 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1172 1173 /* 1174 * In order to update the I2C firmware we must change 1175 * the type 2 record to type 0xF2. This will force the 1176 * UMP to come up in Boot Mode. Then while in boot 1177 * mode, the driver will download the latest firmware 1178 * (padded to 15.5k) into the UMP ram. Finally when the 1179 * device comes back up in download mode the driver 1180 * will cause the new firmware to be copied from the 1181 * UMP Ram to I2C and the firmware will update the 1182 * record type from 0xf2 to 0x02. 1183 */ 1184 status = build_i2c_fw_hdr(header, dev); 1185 if (status) { 1186 kfree(vheader); 1187 kfree(header); 1188 kfree(rom_desc); 1189 kfree(ti_manuf_desc); 1190 return -EINVAL; 1191 } 1192 1193 /* Update I2C with type 0xf2 record with correct 1194 size and checksum */ 1195 status = write_rom(serial, 1196 start_address, 1197 HEADER_SIZE, 1198 header); 1199 if (status) { 1200 kfree(vheader); 1201 kfree(header); 1202 kfree(rom_desc); 1203 kfree(ti_manuf_desc); 1204 return -EINVAL; 1205 } 1206 1207 /* verify the write -- must do this in order for 1208 write to complete before we do the hardware reset */ 1209 status = read_rom(serial, start_address, 1210 HEADER_SIZE, vheader); 1211 1212 if (status) { 1213 dev_dbg(dev, "%s - can't read header back\n", __func__); 1214 kfree(vheader); 1215 kfree(header); 1216 kfree(rom_desc); 1217 kfree(ti_manuf_desc); 1218 return status; 1219 } 1220 if (memcmp(vheader, header, HEADER_SIZE)) { 1221 dev_dbg(dev, "%s - write download record failed\n", __func__); 1222 kfree(vheader); 1223 kfree(header); 1224 kfree(rom_desc); 1225 kfree(ti_manuf_desc); 1226 return -EINVAL; 1227 } 1228 1229 kfree(vheader); 1230 kfree(header); 1231 1232 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1233 1234 /* Tell firmware to copy download image into I2C */ 1235 status = ti_vsend_sync(serial->serial->dev, 1236 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1237 1238 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1239 if (status) { 1240 dev_err(dev, 1241 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1242 __func__); 1243 kfree(rom_desc); 1244 kfree(ti_manuf_desc); 1245 return status; 1246 } 1247 } 1248 1249 // The device is running the download code 1250 kfree(rom_desc); 1251 kfree(ti_manuf_desc); 1252 return 0; 1253 } 1254 1255 /********************************************************************/ 1256 /* Boot Mode */ 1257 /********************************************************************/ 1258 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1259 1260 /* Configure the TI device so we can use the BULK pipes for download */ 1261 status = config_boot_dev(serial->serial->dev); 1262 if (status) 1263 return status; 1264 1265 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1266 != USB_VENDOR_ID_ION) { 1267 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1268 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1269 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1270 goto stayinbootmode; 1271 } 1272 1273 /* We have an ION device (I2c Must be programmed) 1274 Determine I2C image type */ 1275 if (i2c_type_bootmode(serial)) 1276 goto stayinbootmode; 1277 1278 /* Check for ION Vendor ID and that the I2C is valid */ 1279 if (!check_i2c_image(serial)) { 1280 struct ti_i2c_image_header *header; 1281 int i; 1282 __u8 cs = 0; 1283 __u8 *buffer; 1284 int buffer_size; 1285 int err; 1286 const struct firmware *fw; 1287 const char *fw_name = "edgeport/down3.bin"; 1288 1289 /* Validate Hardware version number 1290 * Read Manufacturing Descriptor from TI Based Edgeport 1291 */ 1292 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1293 if (!ti_manuf_desc) { 1294 dev_err(dev, "%s - out of memory.\n", __func__); 1295 return -ENOMEM; 1296 } 1297 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1298 if (status) { 1299 kfree(ti_manuf_desc); 1300 goto stayinbootmode; 1301 } 1302 1303 /* Check for version 2 */ 1304 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1305 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1306 __func__, ti_cpu_rev(ti_manuf_desc)); 1307 kfree(ti_manuf_desc); 1308 goto stayinbootmode; 1309 } 1310 1311 kfree(ti_manuf_desc); 1312 1313 /* 1314 * In order to update the I2C firmware we must change the type 1315 * 2 record to type 0xF2. This will force the UMP to come up 1316 * in Boot Mode. Then while in boot mode, the driver will 1317 * download the latest firmware (padded to 15.5k) into the 1318 * UMP ram. Finally when the device comes back up in download 1319 * mode the driver will cause the new firmware to be copied 1320 * from the UMP Ram to I2C and the firmware will update the 1321 * record type from 0xf2 to 0x02. 1322 * 1323 * Do we really have to copy the whole firmware image, 1324 * or could we do this in place! 1325 */ 1326 1327 /* Allocate a 15.5k buffer + 3 byte header */ 1328 buffer_size = (((1024 * 16) - 512) + 1329 sizeof(struct ti_i2c_image_header)); 1330 buffer = kmalloc(buffer_size, GFP_KERNEL); 1331 if (!buffer) { 1332 dev_err(dev, "%s - out of memory\n", __func__); 1333 return -ENOMEM; 1334 } 1335 1336 /* Initialize the buffer to 0xff (pad the buffer) */ 1337 memset(buffer, 0xff, buffer_size); 1338 1339 err = request_firmware(&fw, fw_name, dev); 1340 if (err) { 1341 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1342 fw_name, err); 1343 kfree(buffer); 1344 return err; 1345 } 1346 memcpy(buffer, &fw->data[4], fw->size - 4); 1347 release_firmware(fw); 1348 1349 for (i = sizeof(struct ti_i2c_image_header); 1350 i < buffer_size; i++) { 1351 cs = (__u8)(cs + buffer[i]); 1352 } 1353 1354 header = (struct ti_i2c_image_header *)buffer; 1355 1356 /* update length and checksum after padding */ 1357 header->Length = cpu_to_le16((__u16)(buffer_size - 1358 sizeof(struct ti_i2c_image_header))); 1359 header->CheckSum = cs; 1360 1361 /* Download the operational code */ 1362 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1363 status = download_code(serial, buffer, buffer_size); 1364 1365 kfree(buffer); 1366 1367 if (status) { 1368 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1369 return status; 1370 } 1371 1372 /* Device will reboot */ 1373 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1374 1375 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1376 1377 /* return an error on purpose */ 1378 return -ENODEV; 1379 } 1380 1381stayinbootmode: 1382 /* Eprom is invalid or blank stay in boot mode */ 1383 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1384 serial->product_info.TiMode = TI_MODE_BOOT; 1385 1386 return 0; 1387} 1388 1389 1390static int ti_do_config(struct edgeport_port *port, int feature, int on) 1391{ 1392 int port_number = port->port->port_number; 1393 1394 on = !!on; /* 1 or 0 not bitmask */ 1395 return send_cmd(port->port->serial->dev, 1396 feature, (__u8)(UMPM_UART1_PORT + port_number), 1397 on, NULL, 0); 1398} 1399 1400 1401static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1402{ 1403 int status = 0; 1404 1405 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1406 1407 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1408 if (status) 1409 return status; 1410 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1411 if (status) 1412 return status; 1413 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1414} 1415 1416/* Convert TI LSR to standard UART flags */ 1417static __u8 map_line_status(__u8 ti_lsr) 1418{ 1419 __u8 lsr = 0; 1420 1421#define MAP_FLAG(flagUmp, flagUart) \ 1422 if (ti_lsr & flagUmp) \ 1423 lsr |= flagUart; 1424 1425 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1426 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1427 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1428 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1429 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1430 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1431 1432#undef MAP_FLAG 1433 1434 return lsr; 1435} 1436 1437static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1438{ 1439 struct async_icount *icount; 1440 struct tty_struct *tty; 1441 1442 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1443 1444 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1445 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1446 icount = &edge_port->port->icount; 1447 1448 /* update input line counters */ 1449 if (msr & EDGEPORT_MSR_DELTA_CTS) 1450 icount->cts++; 1451 if (msr & EDGEPORT_MSR_DELTA_DSR) 1452 icount->dsr++; 1453 if (msr & EDGEPORT_MSR_DELTA_CD) 1454 icount->dcd++; 1455 if (msr & EDGEPORT_MSR_DELTA_RI) 1456 icount->rng++; 1457 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1458 } 1459 1460 /* Save the new modem status */ 1461 edge_port->shadow_msr = msr & 0xf0; 1462 1463 tty = tty_port_tty_get(&edge_port->port->port); 1464 /* handle CTS flow control */ 1465 if (tty && C_CRTSCTS(tty)) { 1466 if (msr & EDGEPORT_MSR_CTS) { 1467 tty->hw_stopped = 0; 1468 tty_wakeup(tty); 1469 } else { 1470 tty->hw_stopped = 1; 1471 } 1472 } 1473 tty_kref_put(tty); 1474} 1475 1476static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1477 __u8 lsr, __u8 data) 1478{ 1479 struct async_icount *icount; 1480 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1481 LSR_FRM_ERR | LSR_BREAK)); 1482 1483 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1484 1485 edge_port->shadow_lsr = lsr; 1486 1487 if (new_lsr & LSR_BREAK) 1488 /* 1489 * Parity and Framing errors only count if they 1490 * occur exclusive of a break being received. 1491 */ 1492 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1493 1494 /* Place LSR data byte into Rx buffer */ 1495 if (lsr_data) 1496 edge_tty_recv(edge_port->port, &data, 1); 1497 1498 /* update input line counters */ 1499 icount = &edge_port->port->icount; 1500 if (new_lsr & LSR_BREAK) 1501 icount->brk++; 1502 if (new_lsr & LSR_OVER_ERR) 1503 icount->overrun++; 1504 if (new_lsr & LSR_PAR_ERR) 1505 icount->parity++; 1506 if (new_lsr & LSR_FRM_ERR) 1507 icount->frame++; 1508} 1509 1510 1511static void edge_interrupt_callback(struct urb *urb) 1512{ 1513 struct edgeport_serial *edge_serial = urb->context; 1514 struct usb_serial_port *port; 1515 struct edgeport_port *edge_port; 1516 struct device *dev; 1517 unsigned char *data = urb->transfer_buffer; 1518 int length = urb->actual_length; 1519 int port_number; 1520 int function; 1521 int retval; 1522 __u8 lsr; 1523 __u8 msr; 1524 int status = urb->status; 1525 1526 switch (status) { 1527 case 0: 1528 /* success */ 1529 break; 1530 case -ECONNRESET: 1531 case -ENOENT: 1532 case -ESHUTDOWN: 1533 /* this urb is terminated, clean up */ 1534 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1535 __func__, status); 1536 return; 1537 default: 1538 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1539 "%d\n", __func__, status); 1540 goto exit; 1541 } 1542 1543 if (!length) { 1544 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1545 goto exit; 1546 } 1547 1548 dev = &edge_serial->serial->dev->dev; 1549 usb_serial_debug_data(dev, __func__, length, data); 1550 1551 if (length != 2) { 1552 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1553 goto exit; 1554 } 1555 1556 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1557 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1558 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1559 port_number, function, data[1]); 1560 port = edge_serial->serial->port[port_number]; 1561 edge_port = usb_get_serial_port_data(port); 1562 if (!edge_port) { 1563 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1564 return; 1565 } 1566 switch (function) { 1567 case TIUMP_INTERRUPT_CODE_LSR: 1568 lsr = map_line_status(data[1]); 1569 if (lsr & UMP_UART_LSR_DATA_MASK) { 1570 /* Save the LSR event for bulk read 1571 completion routine */ 1572 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1573 __func__, port_number, lsr); 1574 edge_port->lsr_event = 1; 1575 edge_port->lsr_mask = lsr; 1576 } else { 1577 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1578 __func__, port_number, lsr); 1579 handle_new_lsr(edge_port, 0, lsr, 0); 1580 } 1581 break; 1582 1583 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1584 /* Copy MSR from UMP */ 1585 msr = data[1]; 1586 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1587 __func__, port_number, msr); 1588 handle_new_msr(edge_port, msr); 1589 break; 1590 1591 default: 1592 dev_err(&urb->dev->dev, 1593 "%s - Unknown Interrupt code from UMP %x\n", 1594 __func__, data[1]); 1595 break; 1596 1597 } 1598 1599exit: 1600 retval = usb_submit_urb(urb, GFP_ATOMIC); 1601 if (retval) 1602 dev_err(&urb->dev->dev, 1603 "%s - usb_submit_urb failed with result %d\n", 1604 __func__, retval); 1605} 1606 1607static void edge_bulk_in_callback(struct urb *urb) 1608{ 1609 struct edgeport_port *edge_port = urb->context; 1610 struct device *dev = &edge_port->port->dev; 1611 unsigned char *data = urb->transfer_buffer; 1612 int retval = 0; 1613 int port_number; 1614 int status = urb->status; 1615 1616 switch (status) { 1617 case 0: 1618 /* success */ 1619 break; 1620 case -ECONNRESET: 1621 case -ENOENT: 1622 case -ESHUTDOWN: 1623 /* this urb is terminated, clean up */ 1624 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1625 return; 1626 default: 1627 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1628 } 1629 1630 if (status == -EPIPE) 1631 goto exit; 1632 1633 if (status) { 1634 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1635 return; 1636 } 1637 1638 port_number = edge_port->port->port_number; 1639 1640 if (edge_port->lsr_event) { 1641 edge_port->lsr_event = 0; 1642 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1643 __func__, port_number, edge_port->lsr_mask, *data); 1644 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1645 /* Adjust buffer length/pointer */ 1646 --urb->actual_length; 1647 ++data; 1648 } 1649 1650 if (urb->actual_length) { 1651 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1652 if (edge_port->close_pending) 1653 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1654 __func__); 1655 else 1656 edge_tty_recv(edge_port->port, data, 1657 urb->actual_length); 1658 edge_port->port->icount.rx += urb->actual_length; 1659 } 1660 1661exit: 1662 /* continue read unless stopped */ 1663 spin_lock(&edge_port->ep_lock); 1664 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1665 retval = usb_submit_urb(urb, GFP_ATOMIC); 1666 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1667 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1668 1669 spin_unlock(&edge_port->ep_lock); 1670 if (retval) 1671 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1672} 1673 1674static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1675 int length) 1676{ 1677 int queued; 1678 1679 queued = tty_insert_flip_string(&port->port, data, length); 1680 if (queued < length) 1681 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1682 __func__, length - queued); 1683 tty_flip_buffer_push(&port->port); 1684} 1685 1686static void edge_bulk_out_callback(struct urb *urb) 1687{ 1688 struct usb_serial_port *port = urb->context; 1689 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1690 int status = urb->status; 1691 struct tty_struct *tty; 1692 1693 edge_port->ep_write_urb_in_use = 0; 1694 1695 switch (status) { 1696 case 0: 1697 /* success */ 1698 break; 1699 case -ECONNRESET: 1700 case -ENOENT: 1701 case -ESHUTDOWN: 1702 /* this urb is terminated, clean up */ 1703 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1704 __func__, status); 1705 return; 1706 default: 1707 dev_err_console(port, "%s - nonzero write bulk status " 1708 "received: %d\n", __func__, status); 1709 } 1710 1711 /* send any buffered data */ 1712 tty = tty_port_tty_get(&port->port); 1713 edge_send(port, tty); 1714 tty_kref_put(tty); 1715} 1716 1717static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1718{ 1719 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1720 struct edgeport_serial *edge_serial; 1721 struct usb_device *dev; 1722 struct urb *urb; 1723 int port_number; 1724 int status; 1725 u16 open_settings; 1726 u8 transaction_timeout; 1727 1728 if (edge_port == NULL) 1729 return -ENODEV; 1730 1731 port_number = port->port_number; 1732 switch (port_number) { 1733 case 0: 1734 edge_port->uart_base = UMPMEM_BASE_UART1; 1735 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1736 break; 1737 case 1: 1738 edge_port->uart_base = UMPMEM_BASE_UART2; 1739 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1740 break; 1741 default: 1742 dev_err(&port->dev, "Unknown port number!!!\n"); 1743 return -ENODEV; 1744 } 1745 1746 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1747 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1748 1749 dev = port->serial->dev; 1750 1751 /* turn off loopback */ 1752 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1753 if (status) { 1754 dev_err(&port->dev, 1755 "%s - cannot send clear loopback command, %d\n", 1756 __func__, status); 1757 return status; 1758 } 1759 1760 /* set up the port settings */ 1761 if (tty) 1762 edge_set_termios(tty, port, &tty->termios); 1763 1764 /* open up the port */ 1765 1766 /* milliseconds to timeout for DMA transfer */ 1767 transaction_timeout = 2; 1768 1769 edge_port->ump_read_timeout = 1770 max(20, ((transaction_timeout * 3) / 2)); 1771 1772 /* milliseconds to timeout for DMA transfer */ 1773 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1774 UMP_PIPE_TRANS_TIMEOUT_ENA | 1775 (transaction_timeout << 2)); 1776 1777 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1778 1779 /* Tell TI to open and start the port */ 1780 status = send_cmd(dev, UMPC_OPEN_PORT, 1781 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1782 if (status) { 1783 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1784 __func__, status); 1785 return status; 1786 } 1787 1788 /* Start the DMA? */ 1789 status = send_cmd(dev, UMPC_START_PORT, 1790 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1791 if (status) { 1792 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1793 __func__, status); 1794 return status; 1795 } 1796 1797 /* Clear TX and RX buffers in UMP */ 1798 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1799 if (status) { 1800 dev_err(&port->dev, 1801 "%s - cannot send clear buffers command, %d\n", 1802 __func__, status); 1803 return status; 1804 } 1805 1806 /* Read Initial MSR */ 1807 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1808 (__u16)(UMPM_UART1_PORT + port_number), 1809 &edge_port->shadow_msr, 1); 1810 if (status) { 1811 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1812 __func__, status); 1813 return status; 1814 } 1815 1816 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1817 1818 /* Set Initial MCR */ 1819 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1820 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1821 1822 edge_serial = edge_port->edge_serial; 1823 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1824 return -ERESTARTSYS; 1825 if (edge_serial->num_ports_open == 0) { 1826 /* we are the first port to open, post the interrupt urb */ 1827 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1828 if (!urb) { 1829 dev_err(&port->dev, 1830 "%s - no interrupt urb present, exiting\n", 1831 __func__); 1832 status = -EINVAL; 1833 goto release_es_lock; 1834 } 1835 urb->context = edge_serial; 1836 status = usb_submit_urb(urb, GFP_KERNEL); 1837 if (status) { 1838 dev_err(&port->dev, 1839 "%s - usb_submit_urb failed with value %d\n", 1840 __func__, status); 1841 goto release_es_lock; 1842 } 1843 } 1844 1845 /* 1846 * reset the data toggle on the bulk endpoints to work around bug in 1847 * host controllers where things get out of sync some times 1848 */ 1849 usb_clear_halt(dev, port->write_urb->pipe); 1850 usb_clear_halt(dev, port->read_urb->pipe); 1851 1852 /* start up our bulk read urb */ 1853 urb = port->read_urb; 1854 if (!urb) { 1855 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1856 __func__); 1857 status = -EINVAL; 1858 goto unlink_int_urb; 1859 } 1860 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1861 urb->context = edge_port; 1862 status = usb_submit_urb(urb, GFP_KERNEL); 1863 if (status) { 1864 dev_err(&port->dev, 1865 "%s - read bulk usb_submit_urb failed with value %d\n", 1866 __func__, status); 1867 goto unlink_int_urb; 1868 } 1869 1870 ++edge_serial->num_ports_open; 1871 1872 goto release_es_lock; 1873 1874unlink_int_urb: 1875 if (edge_port->edge_serial->num_ports_open == 0) 1876 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1877release_es_lock: 1878 mutex_unlock(&edge_serial->es_lock); 1879 return status; 1880} 1881 1882static void edge_close(struct usb_serial_port *port) 1883{ 1884 struct edgeport_serial *edge_serial; 1885 struct edgeport_port *edge_port; 1886 struct usb_serial *serial = port->serial; 1887 unsigned long flags; 1888 int port_number; 1889 1890 edge_serial = usb_get_serial_data(port->serial); 1891 edge_port = usb_get_serial_port_data(port); 1892 if (edge_serial == NULL || edge_port == NULL) 1893 return; 1894 1895 /* The bulkreadcompletion routine will check 1896 * this flag and dump add read data */ 1897 edge_port->close_pending = 1; 1898 1899 usb_kill_urb(port->read_urb); 1900 usb_kill_urb(port->write_urb); 1901 edge_port->ep_write_urb_in_use = 0; 1902 spin_lock_irqsave(&edge_port->ep_lock, flags); 1903 kfifo_reset_out(&port->write_fifo); 1904 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1905 1906 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1907 port_number = port->port_number; 1908 send_cmd(serial->dev, UMPC_CLOSE_PORT, 1909 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1910 1911 mutex_lock(&edge_serial->es_lock); 1912 --edge_port->edge_serial->num_ports_open; 1913 if (edge_port->edge_serial->num_ports_open <= 0) { 1914 /* last port is now closed, let's shut down our interrupt urb */ 1915 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1916 edge_port->edge_serial->num_ports_open = 0; 1917 } 1918 mutex_unlock(&edge_serial->es_lock); 1919 edge_port->close_pending = 0; 1920} 1921 1922static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1923 const unsigned char *data, int count) 1924{ 1925 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1926 1927 if (count == 0) { 1928 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1929 return 0; 1930 } 1931 1932 if (edge_port == NULL) 1933 return -ENODEV; 1934 if (edge_port->close_pending == 1) 1935 return -ENODEV; 1936 1937 count = kfifo_in_locked(&port->write_fifo, data, count, 1938 &edge_port->ep_lock); 1939 edge_send(port, tty); 1940 1941 return count; 1942} 1943 1944static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 1945{ 1946 int count, result; 1947 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1948 unsigned long flags; 1949 1950 spin_lock_irqsave(&edge_port->ep_lock, flags); 1951 1952 if (edge_port->ep_write_urb_in_use) { 1953 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1954 return; 1955 } 1956 1957 count = kfifo_out(&port->write_fifo, 1958 port->write_urb->transfer_buffer, 1959 port->bulk_out_size); 1960 1961 if (count == 0) { 1962 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1963 return; 1964 } 1965 1966 edge_port->ep_write_urb_in_use = 1; 1967 1968 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1969 1970 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1971 1972 /* set up our urb */ 1973 port->write_urb->transfer_buffer_length = count; 1974 1975 /* send the data out the bulk port */ 1976 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1977 if (result) { 1978 dev_err_console(port, 1979 "%s - failed submitting write urb, error %d\n", 1980 __func__, result); 1981 edge_port->ep_write_urb_in_use = 0; 1982 /* TODO: reschedule edge_send */ 1983 } else 1984 edge_port->port->icount.tx += count; 1985 1986 /* wakeup any process waiting for writes to complete */ 1987 /* there is now more room in the buffer for new writes */ 1988 if (tty) 1989 tty_wakeup(tty); 1990} 1991 1992static int edge_write_room(struct tty_struct *tty) 1993{ 1994 struct usb_serial_port *port = tty->driver_data; 1995 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1996 int room = 0; 1997 unsigned long flags; 1998 1999 if (edge_port == NULL) 2000 return 0; 2001 if (edge_port->close_pending == 1) 2002 return 0; 2003 2004 spin_lock_irqsave(&edge_port->ep_lock, flags); 2005 room = kfifo_avail(&port->write_fifo); 2006 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2007 2008 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2009 return room; 2010} 2011 2012static int edge_chars_in_buffer(struct tty_struct *tty) 2013{ 2014 struct usb_serial_port *port = tty->driver_data; 2015 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2016 int chars = 0; 2017 unsigned long flags; 2018 if (edge_port == NULL) 2019 return 0; 2020 2021 spin_lock_irqsave(&edge_port->ep_lock, flags); 2022 chars = kfifo_len(&port->write_fifo); 2023 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2024 2025 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2026 return chars; 2027} 2028 2029static bool edge_tx_empty(struct usb_serial_port *port) 2030{ 2031 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2032 int ret; 2033 2034 ret = tx_active(edge_port); 2035 if (ret > 0) 2036 return false; 2037 2038 return true; 2039} 2040 2041static void edge_throttle(struct tty_struct *tty) 2042{ 2043 struct usb_serial_port *port = tty->driver_data; 2044 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2045 int status; 2046 2047 if (edge_port == NULL) 2048 return; 2049 2050 /* if we are implementing XON/XOFF, send the stop character */ 2051 if (I_IXOFF(tty)) { 2052 unsigned char stop_char = STOP_CHAR(tty); 2053 status = edge_write(tty, port, &stop_char, 1); 2054 if (status <= 0) { 2055 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2056 } 2057 } 2058 2059 /* if we are implementing RTS/CTS, stop reads */ 2060 /* and the Edgeport will clear the RTS line */ 2061 if (C_CRTSCTS(tty)) 2062 stop_read(edge_port); 2063 2064} 2065 2066static void edge_unthrottle(struct tty_struct *tty) 2067{ 2068 struct usb_serial_port *port = tty->driver_data; 2069 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2070 int status; 2071 2072 if (edge_port == NULL) 2073 return; 2074 2075 /* if we are implementing XON/XOFF, send the start character */ 2076 if (I_IXOFF(tty)) { 2077 unsigned char start_char = START_CHAR(tty); 2078 status = edge_write(tty, port, &start_char, 1); 2079 if (status <= 0) { 2080 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2081 } 2082 } 2083 /* if we are implementing RTS/CTS, restart reads */ 2084 /* are the Edgeport will assert the RTS line */ 2085 if (C_CRTSCTS(tty)) { 2086 status = restart_read(edge_port); 2087 if (status) 2088 dev_err(&port->dev, 2089 "%s - read bulk usb_submit_urb failed: %d\n", 2090 __func__, status); 2091 } 2092 2093} 2094 2095static void stop_read(struct edgeport_port *edge_port) 2096{ 2097 unsigned long flags; 2098 2099 spin_lock_irqsave(&edge_port->ep_lock, flags); 2100 2101 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2102 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2103 edge_port->shadow_mcr &= ~MCR_RTS; 2104 2105 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2106} 2107 2108static int restart_read(struct edgeport_port *edge_port) 2109{ 2110 struct urb *urb; 2111 int status = 0; 2112 unsigned long flags; 2113 2114 spin_lock_irqsave(&edge_port->ep_lock, flags); 2115 2116 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2117 urb = edge_port->port->read_urb; 2118 status = usb_submit_urb(urb, GFP_ATOMIC); 2119 } 2120 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2121 edge_port->shadow_mcr |= MCR_RTS; 2122 2123 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2124 2125 return status; 2126} 2127 2128static void change_port_settings(struct tty_struct *tty, 2129 struct edgeport_port *edge_port, struct ktermios *old_termios) 2130{ 2131 struct device *dev = &edge_port->port->dev; 2132 struct ump_uart_config *config; 2133 int baud; 2134 unsigned cflag; 2135 int status; 2136 int port_number = edge_port->port->port_number; 2137 2138 config = kmalloc (sizeof (*config), GFP_KERNEL); 2139 if (!config) { 2140 tty->termios = *old_termios; 2141 dev_err(dev, "%s - out of memory\n", __func__); 2142 return; 2143 } 2144 2145 cflag = tty->termios.c_cflag; 2146 2147 config->wFlags = 0; 2148 2149 /* These flags must be set */ 2150 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2151 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2152 config->bUartMode = (__u8)(edge_port->bUartMode); 2153 2154 switch (cflag & CSIZE) { 2155 case CS5: 2156 config->bDataBits = UMP_UART_CHAR5BITS; 2157 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2158 break; 2159 case CS6: 2160 config->bDataBits = UMP_UART_CHAR6BITS; 2161 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2162 break; 2163 case CS7: 2164 config->bDataBits = UMP_UART_CHAR7BITS; 2165 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2166 break; 2167 default: 2168 case CS8: 2169 config->bDataBits = UMP_UART_CHAR8BITS; 2170 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2171 break; 2172 } 2173 2174 if (cflag & PARENB) { 2175 if (cflag & PARODD) { 2176 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2177 config->bParity = UMP_UART_ODDPARITY; 2178 dev_dbg(dev, "%s - parity = odd\n", __func__); 2179 } else { 2180 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2181 config->bParity = UMP_UART_EVENPARITY; 2182 dev_dbg(dev, "%s - parity = even\n", __func__); 2183 } 2184 } else { 2185 config->bParity = UMP_UART_NOPARITY; 2186 dev_dbg(dev, "%s - parity = none\n", __func__); 2187 } 2188 2189 if (cflag & CSTOPB) { 2190 config->bStopBits = UMP_UART_STOPBIT2; 2191 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2192 } else { 2193 config->bStopBits = UMP_UART_STOPBIT1; 2194 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2195 } 2196 2197 /* figure out the flow control settings */ 2198 if (cflag & CRTSCTS) { 2199 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2200 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2201 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2202 } else { 2203 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2204 tty->hw_stopped = 0; 2205 restart_read(edge_port); 2206 } 2207 2208 /* if we are implementing XON/XOFF, set the start and stop 2209 character in the device */ 2210 config->cXon = START_CHAR(tty); 2211 config->cXoff = STOP_CHAR(tty); 2212 2213 /* if we are implementing INBOUND XON/XOFF */ 2214 if (I_IXOFF(tty)) { 2215 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2216 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2217 __func__, config->cXon, config->cXoff); 2218 } else 2219 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2220 2221 /* if we are implementing OUTBOUND XON/XOFF */ 2222 if (I_IXON(tty)) { 2223 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2224 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2225 __func__, config->cXon, config->cXoff); 2226 } else 2227 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2228 2229 tty->termios.c_cflag &= ~CMSPAR; 2230 2231 /* Round the baud rate */ 2232 baud = tty_get_baud_rate(tty); 2233 if (!baud) { 2234 /* pick a default, any default... */ 2235 baud = 9600; 2236 } else 2237 tty_encode_baud_rate(tty, baud, baud); 2238 2239 edge_port->baud_rate = baud; 2240 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2241 2242 /* FIXME: Recompute actual baud from divisor here */ 2243 2244 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2245 2246 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2247 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2248 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2249 dev_dbg(dev, "bParity: %d\n", config->bParity); 2250 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2251 dev_dbg(dev, "cXon: %d\n", config->cXon); 2252 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2253 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2254 2255 /* move the word values into big endian mode */ 2256 cpu_to_be16s(&config->wFlags); 2257 cpu_to_be16s(&config->wBaudRate); 2258 2259 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2260 (__u8)(UMPM_UART1_PORT + port_number), 2261 0, (__u8 *)config, sizeof(*config)); 2262 if (status) 2263 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2264 __func__, status); 2265 kfree(config); 2266} 2267 2268static void edge_set_termios(struct tty_struct *tty, 2269 struct usb_serial_port *port, struct ktermios *old_termios) 2270{ 2271 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2272 unsigned int cflag; 2273 2274 cflag = tty->termios.c_cflag; 2275 2276 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2277 tty->termios.c_cflag, tty->termios.c_iflag); 2278 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2279 old_termios->c_cflag, old_termios->c_iflag); 2280 2281 if (edge_port == NULL) 2282 return; 2283 /* change the port settings to the new ones specified */ 2284 change_port_settings(tty, edge_port, old_termios); 2285} 2286 2287static int edge_tiocmset(struct tty_struct *tty, 2288 unsigned int set, unsigned int clear) 2289{ 2290 struct usb_serial_port *port = tty->driver_data; 2291 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2292 unsigned int mcr; 2293 unsigned long flags; 2294 2295 spin_lock_irqsave(&edge_port->ep_lock, flags); 2296 mcr = edge_port->shadow_mcr; 2297 if (set & TIOCM_RTS) 2298 mcr |= MCR_RTS; 2299 if (set & TIOCM_DTR) 2300 mcr |= MCR_DTR; 2301 if (set & TIOCM_LOOP) 2302 mcr |= MCR_LOOPBACK; 2303 2304 if (clear & TIOCM_RTS) 2305 mcr &= ~MCR_RTS; 2306 if (clear & TIOCM_DTR) 2307 mcr &= ~MCR_DTR; 2308 if (clear & TIOCM_LOOP) 2309 mcr &= ~MCR_LOOPBACK; 2310 2311 edge_port->shadow_mcr = mcr; 2312 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2313 2314 restore_mcr(edge_port, mcr); 2315 return 0; 2316} 2317 2318static int edge_tiocmget(struct tty_struct *tty) 2319{ 2320 struct usb_serial_port *port = tty->driver_data; 2321 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2322 unsigned int result = 0; 2323 unsigned int msr; 2324 unsigned int mcr; 2325 unsigned long flags; 2326 2327 spin_lock_irqsave(&edge_port->ep_lock, flags); 2328 2329 msr = edge_port->shadow_msr; 2330 mcr = edge_port->shadow_mcr; 2331 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2332 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2333 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2334 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2335 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2336 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2337 2338 2339 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2340 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2341 2342 return result; 2343} 2344 2345static int get_serial_info(struct edgeport_port *edge_port, 2346 struct serial_struct __user *retinfo) 2347{ 2348 struct serial_struct tmp; 2349 unsigned cwait; 2350 2351 if (!retinfo) 2352 return -EFAULT; 2353 2354 cwait = edge_port->port->port.closing_wait; 2355 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2356 cwait = jiffies_to_msecs(cwait) / 10; 2357 2358 memset(&tmp, 0, sizeof(tmp)); 2359 2360 tmp.type = PORT_16550A; 2361 tmp.line = edge_port->port->minor; 2362 tmp.port = edge_port->port->port_number; 2363 tmp.irq = 0; 2364 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2365 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2366 tmp.baud_base = 9600; 2367 tmp.close_delay = 5*HZ; 2368 tmp.closing_wait = cwait; 2369 2370 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2371 return -EFAULT; 2372 return 0; 2373} 2374 2375static int edge_ioctl(struct tty_struct *tty, 2376 unsigned int cmd, unsigned long arg) 2377{ 2378 struct usb_serial_port *port = tty->driver_data; 2379 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2380 2381 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); 2382 2383 switch (cmd) { 2384 case TIOCGSERIAL: 2385 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2386 return get_serial_info(edge_port, 2387 (struct serial_struct __user *) arg); 2388 } 2389 return -ENOIOCTLCMD; 2390} 2391 2392static void edge_break(struct tty_struct *tty, int break_state) 2393{ 2394 struct usb_serial_port *port = tty->driver_data; 2395 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2396 int status; 2397 int bv = 0; /* Off */ 2398 2399 if (break_state == -1) 2400 bv = 1; /* On */ 2401 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2402 if (status) 2403 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2404 __func__, status); 2405} 2406 2407static int edge_startup(struct usb_serial *serial) 2408{ 2409 struct edgeport_serial *edge_serial; 2410 int status; 2411 2412 /* create our private serial structure */ 2413 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2414 if (edge_serial == NULL) { 2415 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2416 return -ENOMEM; 2417 } 2418 mutex_init(&edge_serial->es_lock); 2419 edge_serial->serial = serial; 2420 usb_set_serial_data(serial, edge_serial); 2421 2422 status = download_fw(edge_serial); 2423 if (status) { 2424 kfree(edge_serial); 2425 return status; 2426 } 2427 2428 return 0; 2429} 2430 2431static void edge_disconnect(struct usb_serial *serial) 2432{ 2433} 2434 2435static void edge_release(struct usb_serial *serial) 2436{ 2437 kfree(usb_get_serial_data(serial)); 2438} 2439 2440static int edge_port_probe(struct usb_serial_port *port) 2441{ 2442 struct edgeport_port *edge_port; 2443 int ret; 2444 2445 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2446 if (!edge_port) 2447 return -ENOMEM; 2448 2449 spin_lock_init(&edge_port->ep_lock); 2450 edge_port->port = port; 2451 edge_port->edge_serial = usb_get_serial_data(port->serial); 2452 edge_port->bUartMode = default_uart_mode; 2453 2454 usb_set_serial_port_data(port, edge_port); 2455 2456 ret = edge_create_sysfs_attrs(port); 2457 if (ret) { 2458 kfree(edge_port); 2459 return ret; 2460 } 2461 2462 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2463 port->port.drain_delay = 1; 2464 2465 return 0; 2466} 2467 2468static int edge_port_remove(struct usb_serial_port *port) 2469{ 2470 struct edgeport_port *edge_port; 2471 2472 edge_port = usb_get_serial_port_data(port); 2473 edge_remove_sysfs_attrs(port); 2474 kfree(edge_port); 2475 2476 return 0; 2477} 2478 2479/* Sysfs Attributes */ 2480 2481static ssize_t show_uart_mode(struct device *dev, 2482 struct device_attribute *attr, char *buf) 2483{ 2484 struct usb_serial_port *port = to_usb_serial_port(dev); 2485 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2486 2487 return sprintf(buf, "%d\n", edge_port->bUartMode); 2488} 2489 2490static ssize_t store_uart_mode(struct device *dev, 2491 struct device_attribute *attr, const char *valbuf, size_t count) 2492{ 2493 struct usb_serial_port *port = to_usb_serial_port(dev); 2494 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2495 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2496 2497 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2498 2499 if (v < 256) 2500 edge_port->bUartMode = v; 2501 else 2502 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2503 2504 return count; 2505} 2506 2507static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2508 store_uart_mode); 2509 2510static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2511{ 2512 return device_create_file(&port->dev, &dev_attr_uart_mode); 2513} 2514 2515static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2516{ 2517 device_remove_file(&port->dev, &dev_attr_uart_mode); 2518 return 0; 2519} 2520 2521 2522static struct usb_serial_driver edgeport_1port_device = { 2523 .driver = { 2524 .owner = THIS_MODULE, 2525 .name = "edgeport_ti_1", 2526 }, 2527 .description = "Edgeport TI 1 port adapter", 2528 .id_table = edgeport_1port_id_table, 2529 .num_ports = 1, 2530 .open = edge_open, 2531 .close = edge_close, 2532 .throttle = edge_throttle, 2533 .unthrottle = edge_unthrottle, 2534 .attach = edge_startup, 2535 .disconnect = edge_disconnect, 2536 .release = edge_release, 2537 .port_probe = edge_port_probe, 2538 .port_remove = edge_port_remove, 2539 .ioctl = edge_ioctl, 2540 .set_termios = edge_set_termios, 2541 .tiocmget = edge_tiocmget, 2542 .tiocmset = edge_tiocmset, 2543 .tiocmiwait = usb_serial_generic_tiocmiwait, 2544 .get_icount = usb_serial_generic_get_icount, 2545 .write = edge_write, 2546 .write_room = edge_write_room, 2547 .chars_in_buffer = edge_chars_in_buffer, 2548 .tx_empty = edge_tx_empty, 2549 .break_ctl = edge_break, 2550 .read_int_callback = edge_interrupt_callback, 2551 .read_bulk_callback = edge_bulk_in_callback, 2552 .write_bulk_callback = edge_bulk_out_callback, 2553}; 2554 2555static struct usb_serial_driver edgeport_2port_device = { 2556 .driver = { 2557 .owner = THIS_MODULE, 2558 .name = "edgeport_ti_2", 2559 }, 2560 .description = "Edgeport TI 2 port adapter", 2561 .id_table = edgeport_2port_id_table, 2562 .num_ports = 2, 2563 .open = edge_open, 2564 .close = edge_close, 2565 .throttle = edge_throttle, 2566 .unthrottle = edge_unthrottle, 2567 .attach = edge_startup, 2568 .disconnect = edge_disconnect, 2569 .release = edge_release, 2570 .port_probe = edge_port_probe, 2571 .port_remove = edge_port_remove, 2572 .ioctl = edge_ioctl, 2573 .set_termios = edge_set_termios, 2574 .tiocmget = edge_tiocmget, 2575 .tiocmset = edge_tiocmset, 2576 .tiocmiwait = usb_serial_generic_tiocmiwait, 2577 .get_icount = usb_serial_generic_get_icount, 2578 .write = edge_write, 2579 .write_room = edge_write_room, 2580 .chars_in_buffer = edge_chars_in_buffer, 2581 .tx_empty = edge_tx_empty, 2582 .break_ctl = edge_break, 2583 .read_int_callback = edge_interrupt_callback, 2584 .read_bulk_callback = edge_bulk_in_callback, 2585 .write_bulk_callback = edge_bulk_out_callback, 2586}; 2587 2588static struct usb_serial_driver * const serial_drivers[] = { 2589 &edgeport_1port_device, &edgeport_2port_device, NULL 2590}; 2591 2592module_usb_serial_driver(serial_drivers, id_table_combined); 2593 2594MODULE_AUTHOR(DRIVER_AUTHOR); 2595MODULE_DESCRIPTION(DRIVER_DESC); 2596MODULE_LICENSE("GPL"); 2597MODULE_FIRMWARE("edgeport/down3.bin"); 2598 2599module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2600MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2601 2602module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2603MODULE_PARM_DESC(ignore_cpu_rev, 2604 "Ignore the cpu revision when connecting to a device"); 2605 2606module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2607MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2608