io_ti.c revision b6fd35ee5766143d6bc3c333edf374c336ebdca6
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#define EDGE_OUT_BUF_SIZE 1024 68 69 70/* Product information read from the Edgeport */ 71struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74} __attribute__((packed)); 75 76struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 90 struct edgeport_serial *edge_serial; 91 struct usb_serial_port *port; 92 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 93 spinlock_t ep_lock; 94 int ep_read_urb_state; 95 int ep_write_urb_in_use; 96 struct kfifo write_fifo; 97}; 98 99struct edgeport_serial { 100 struct product_info product_info; 101 u8 TI_I2C_Type; /* Type of I2C in UMP */ 102 u8 TiReadI2C; /* Set to TRUE if we have read the 103 I2c in Boot Mode */ 104 struct mutex es_lock; 105 int num_ports_open; 106 struct usb_serial *serial; 107}; 108 109 110/* Devices that this driver supports */ 111static const struct usb_device_id edgeport_1port_id_table[] = { 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 128 { } 129}; 130 131static const struct usb_device_id edgeport_2port_id_table[] = { 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 144 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 150 { } 151}; 152 153/* Devices that this driver supports */ 154static const struct usb_device_id id_table_combined[] = { 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 188 { } 189}; 190 191MODULE_DEVICE_TABLE(usb, id_table_combined); 192 193static unsigned char OperationalMajorVersion; 194static unsigned char OperationalMinorVersion; 195static unsigned short OperationalBuildNumber; 196 197static int closing_wait = EDGE_CLOSING_WAIT; 198static bool ignore_cpu_rev; 199static int default_uart_mode; /* RS232 */ 200 201static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 202 int length); 203 204static void stop_read(struct edgeport_port *edge_port); 205static int restart_read(struct edgeport_port *edge_port); 206 207static void edge_set_termios(struct tty_struct *tty, 208 struct usb_serial_port *port, struct ktermios *old_termios); 209static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 210 211/* sysfs attributes */ 212static int edge_create_sysfs_attrs(struct usb_serial_port *port); 213static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 214 215 216static int ti_vread_sync(struct usb_device *dev, __u8 request, 217 __u16 value, __u16 index, u8 *data, int size) 218{ 219 int status; 220 221 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 222 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 223 value, index, data, size, 1000); 224 if (status < 0) 225 return status; 226 if (status != size) { 227 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 228 __func__, size, status); 229 return -ECOMM; 230 } 231 return 0; 232} 233 234static int ti_vsend_sync(struct usb_device *dev, __u8 request, 235 __u16 value, __u16 index, u8 *data, int size) 236{ 237 int status; 238 239 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 240 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 241 value, index, data, size, 1000); 242 if (status < 0) 243 return status; 244 if (status != size) { 245 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 246 __func__, size, status); 247 return -ECOMM; 248 } 249 return 0; 250} 251 252static int send_cmd(struct usb_device *dev, __u8 command, 253 __u8 moduleid, __u16 value, u8 *data, 254 int size) 255{ 256 return ti_vsend_sync(dev, command, value, moduleid, data, size); 257} 258 259/* clear tx/rx buffers and fifo in TI UMP */ 260static int purge_port(struct usb_serial_port *port, __u16 mask) 261{ 262 int port_number = port->number - port->serial->minor; 263 264 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 265 266 return send_cmd(port->serial->dev, 267 UMPC_PURGE_PORT, 268 (__u8)(UMPM_UART1_PORT + port_number), 269 mask, 270 NULL, 271 0); 272} 273 274/** 275 * read_download_mem - Read edgeport memory from TI chip 276 * @dev: usb device pointer 277 * @start_address: Device CPU address at which to read 278 * @length: Length of above data 279 * @address_type: Can read both XDATA and I2C 280 * @buffer: pointer to input data buffer 281 */ 282static int read_download_mem(struct usb_device *dev, int start_address, 283 int length, __u8 address_type, __u8 *buffer) 284{ 285 int status = 0; 286 __u8 read_length; 287 __be16 be_start_address; 288 289 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 290 291 /* Read in blocks of 64 bytes 292 * (TI firmware can't handle more than 64 byte reads) 293 */ 294 while (length) { 295 if (length > 64) 296 read_length = 64; 297 else 298 read_length = (__u8)length; 299 300 if (read_length > 1) { 301 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 302 } 303 be_start_address = cpu_to_be16(start_address); 304 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 305 (__u16)address_type, 306 (__force __u16)be_start_address, 307 buffer, read_length); 308 309 if (status) { 310 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 311 return status; 312 } 313 314 if (read_length > 1) 315 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 316 317 /* Update pointers/length */ 318 start_address += read_length; 319 buffer += read_length; 320 length -= read_length; 321 } 322 323 return status; 324} 325 326static int read_ram(struct usb_device *dev, int start_address, 327 int length, __u8 *buffer) 328{ 329 return read_download_mem(dev, start_address, length, 330 DTK_ADDR_SPACE_XDATA, buffer); 331} 332 333/* Read edgeport memory to a given block */ 334static int read_boot_mem(struct edgeport_serial *serial, 335 int start_address, int length, __u8 *buffer) 336{ 337 int status = 0; 338 int i; 339 340 for (i = 0; i < length; i++) { 341 status = ti_vread_sync(serial->serial->dev, 342 UMPC_MEMORY_READ, serial->TI_I2C_Type, 343 (__u16)(start_address+i), &buffer[i], 0x01); 344 if (status) { 345 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 346 return status; 347 } 348 } 349 350 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 351 __func__, start_address, length); 352 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 353 354 serial->TiReadI2C = 1; 355 356 return status; 357} 358 359/* Write given block to TI EPROM memory */ 360static int write_boot_mem(struct edgeport_serial *serial, 361 int start_address, int length, __u8 *buffer) 362{ 363 int status = 0; 364 int i; 365 u8 *temp; 366 367 /* Must do a read before write */ 368 if (!serial->TiReadI2C) { 369 temp = kmalloc(1, GFP_KERNEL); 370 if (!temp) { 371 dev_err(&serial->serial->dev->dev, 372 "%s - out of memory\n", __func__); 373 return -ENOMEM; 374 } 375 status = read_boot_mem(serial, 0, 1, temp); 376 kfree(temp); 377 if (status) 378 return status; 379 } 380 381 for (i = 0; i < length; ++i) { 382 status = ti_vsend_sync(serial->serial->dev, 383 UMPC_MEMORY_WRITE, buffer[i], 384 (__u16)(i + start_address), NULL, 0); 385 if (status) 386 return status; 387 } 388 389 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 390 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 391 392 return status; 393} 394 395 396/* Write edgeport I2C memory to TI chip */ 397static int write_i2c_mem(struct edgeport_serial *serial, 398 int start_address, int length, __u8 address_type, __u8 *buffer) 399{ 400 struct device *dev = &serial->serial->dev->dev; 401 int status = 0; 402 int write_length; 403 __be16 be_start_address; 404 405 /* We can only send a maximum of 1 aligned byte page at a time */ 406 407 /* calculate the number of bytes left in the first page */ 408 write_length = EPROM_PAGE_SIZE - 409 (start_address & (EPROM_PAGE_SIZE - 1)); 410 411 if (write_length > length) 412 write_length = length; 413 414 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 415 __func__, start_address, write_length); 416 usb_serial_debug_data(dev, __func__, write_length, buffer); 417 418 /* Write first page */ 419 be_start_address = cpu_to_be16(start_address); 420 status = ti_vsend_sync(serial->serial->dev, 421 UMPC_MEMORY_WRITE, (__u16)address_type, 422 (__force __u16)be_start_address, 423 buffer, write_length); 424 if (status) { 425 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 426 return status; 427 } 428 429 length -= write_length; 430 start_address += write_length; 431 buffer += write_length; 432 433 /* We should be aligned now -- can write 434 max page size bytes at a time */ 435 while (length) { 436 if (length > EPROM_PAGE_SIZE) 437 write_length = EPROM_PAGE_SIZE; 438 else 439 write_length = length; 440 441 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 442 __func__, start_address, write_length); 443 usb_serial_debug_data(dev, __func__, write_length, buffer); 444 445 /* Write next page */ 446 be_start_address = cpu_to_be16(start_address); 447 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 448 (__u16)address_type, 449 (__force __u16)be_start_address, 450 buffer, write_length); 451 if (status) { 452 dev_err(dev, "%s - ERROR %d\n", __func__, status); 453 return status; 454 } 455 456 length -= write_length; 457 start_address += write_length; 458 buffer += write_length; 459 } 460 return status; 461} 462 463/* Examine the UMP DMA registers and LSR 464 * 465 * Check the MSBit of the X and Y DMA byte count registers. 466 * A zero in this bit indicates that the TX DMA buffers are empty 467 * then check the TX Empty bit in the UART. 468 */ 469static int tx_active(struct edgeport_port *port) 470{ 471 int status; 472 struct out_endpoint_desc_block *oedb; 473 __u8 *lsr; 474 int bytes_left = 0; 475 476 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 477 if (!oedb) { 478 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 479 return -ENOMEM; 480 } 481 482 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 483 as not all platforms can do DMA 484 from stack */ 485 if (!lsr) { 486 kfree(oedb); 487 return -ENOMEM; 488 } 489 /* Read the DMA Count Registers */ 490 status = read_ram(port->port->serial->dev, port->dma_address, 491 sizeof(*oedb), (void *)oedb); 492 if (status) 493 goto exit_is_tx_active; 494 495 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 496 497 /* and the LSR */ 498 status = read_ram(port->port->serial->dev, 499 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 500 501 if (status) 502 goto exit_is_tx_active; 503 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 504 505 /* If either buffer has data or we are transmitting then return TRUE */ 506 if ((oedb->XByteCount & 0x80) != 0) 507 bytes_left += 64; 508 509 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 510 bytes_left += 1; 511 512 /* We return Not Active if we get any kind of error */ 513exit_is_tx_active: 514 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 515 516 kfree(lsr); 517 kfree(oedb); 518 return bytes_left; 519} 520 521static int choose_config(struct usb_device *dev) 522{ 523 /* 524 * There may be multiple configurations on this device, in which case 525 * we would need to read and parse all of them to find out which one 526 * we want. However, we just support one config at this point, 527 * configuration # 1, which is Config Descriptor 0. 528 */ 529 530 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 531 __func__, dev->config->desc.bNumInterfaces); 532 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 533 __func__, dev->config->desc.bMaxPower * 2); 534 535 if (dev->config->desc.bNumInterfaces != 1) { 536 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 537 return -ENODEV; 538 } 539 540 return 0; 541} 542 543static int read_rom(struct edgeport_serial *serial, 544 int start_address, int length, __u8 *buffer) 545{ 546 int status; 547 548 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 549 status = read_download_mem(serial->serial->dev, 550 start_address, 551 length, 552 serial->TI_I2C_Type, 553 buffer); 554 } else { 555 status = read_boot_mem(serial, start_address, length, 556 buffer); 557 } 558 return status; 559} 560 561static int write_rom(struct edgeport_serial *serial, int start_address, 562 int length, __u8 *buffer) 563{ 564 if (serial->product_info.TiMode == TI_MODE_BOOT) 565 return write_boot_mem(serial, start_address, length, 566 buffer); 567 568 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 569 return write_i2c_mem(serial, start_address, length, 570 serial->TI_I2C_Type, buffer); 571 return -EINVAL; 572} 573 574 575 576/* Read a descriptor header from I2C based on type */ 577static int get_descriptor_addr(struct edgeport_serial *serial, 578 int desc_type, struct ti_i2c_desc *rom_desc) 579{ 580 int start_address; 581 int status; 582 583 /* Search for requested descriptor in I2C */ 584 start_address = 2; 585 do { 586 status = read_rom(serial, 587 start_address, 588 sizeof(struct ti_i2c_desc), 589 (__u8 *)rom_desc); 590 if (status) 591 return 0; 592 593 if (rom_desc->Type == desc_type) 594 return start_address; 595 596 start_address = start_address + sizeof(struct ti_i2c_desc) 597 + rom_desc->Size; 598 599 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 600 601 return 0; 602} 603 604/* Validate descriptor checksum */ 605static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 606{ 607 __u16 i; 608 __u8 cs = 0; 609 610 for (i = 0; i < rom_desc->Size; i++) 611 cs = (__u8)(cs + buffer[i]); 612 613 if (cs != rom_desc->CheckSum) { 614 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 615 return -EINVAL; 616 } 617 return 0; 618} 619 620/* Make sure that the I2C image is good */ 621static int check_i2c_image(struct edgeport_serial *serial) 622{ 623 struct device *dev = &serial->serial->dev->dev; 624 int status = 0; 625 struct ti_i2c_desc *rom_desc; 626 int start_address = 2; 627 __u8 *buffer; 628 __u16 ttype; 629 630 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 631 if (!rom_desc) { 632 dev_err(dev, "%s - out of memory\n", __func__); 633 return -ENOMEM; 634 } 635 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 636 if (!buffer) { 637 dev_err(dev, "%s - out of memory when allocating buffer\n", 638 __func__); 639 kfree(rom_desc); 640 return -ENOMEM; 641 } 642 643 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 644 status = read_rom(serial, 0, 1, buffer); 645 if (status) 646 goto out; 647 648 if (*buffer != UMP5152 && *buffer != UMP3410) { 649 dev_err(dev, "%s - invalid buffer signature\n", __func__); 650 status = -ENODEV; 651 goto out; 652 } 653 654 do { 655 /* Validate the I2C */ 656 status = read_rom(serial, 657 start_address, 658 sizeof(struct ti_i2c_desc), 659 (__u8 *)rom_desc); 660 if (status) 661 break; 662 663 if ((start_address + sizeof(struct ti_i2c_desc) + 664 rom_desc->Size) > TI_MAX_I2C_SIZE) { 665 status = -ENODEV; 666 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 667 break; 668 } 669 670 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 671 672 /* Skip type 2 record */ 673 ttype = rom_desc->Type & 0x0f; 674 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 675 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 676 /* Read the descriptor data */ 677 status = read_rom(serial, start_address + 678 sizeof(struct ti_i2c_desc), 679 rom_desc->Size, buffer); 680 if (status) 681 break; 682 683 status = valid_csum(rom_desc, buffer); 684 if (status) 685 break; 686 } 687 start_address = start_address + sizeof(struct ti_i2c_desc) + 688 rom_desc->Size; 689 690 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 691 (start_address < TI_MAX_I2C_SIZE)); 692 693 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 694 (start_address > TI_MAX_I2C_SIZE)) 695 status = -ENODEV; 696 697out: 698 kfree(buffer); 699 kfree(rom_desc); 700 return status; 701} 702 703static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 704{ 705 int status; 706 int start_address; 707 struct ti_i2c_desc *rom_desc; 708 struct edge_ti_manuf_descriptor *desc; 709 struct device *dev = &serial->serial->dev->dev; 710 711 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 712 if (!rom_desc) { 713 dev_err(dev, "%s - out of memory\n", __func__); 714 return -ENOMEM; 715 } 716 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 717 rom_desc); 718 719 if (!start_address) { 720 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 721 status = -ENODEV; 722 goto exit; 723 } 724 725 /* Read the descriptor data */ 726 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 727 rom_desc->Size, buffer); 728 if (status) 729 goto exit; 730 731 status = valid_csum(rom_desc, buffer); 732 733 desc = (struct edge_ti_manuf_descriptor *)buffer; 734 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 735 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 736 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 737 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 738 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 739 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 740 741exit: 742 kfree(rom_desc); 743 return status; 744} 745 746/* Build firmware header used for firmware update */ 747static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 748{ 749 __u8 *buffer; 750 int buffer_size; 751 int i; 752 int err; 753 __u8 cs = 0; 754 struct ti_i2c_desc *i2c_header; 755 struct ti_i2c_image_header *img_header; 756 struct ti_i2c_firmware_rec *firmware_rec; 757 const struct firmware *fw; 758 const char *fw_name = "edgeport/down3.bin"; 759 760 /* In order to update the I2C firmware we must change the type 2 record 761 * to type 0xF2. This will force the UMP to come up in Boot Mode. 762 * Then while in boot mode, the driver will download the latest 763 * firmware (padded to 15.5k) into the UMP ram. And finally when the 764 * device comes back up in download mode the driver will cause the new 765 * firmware to be copied from the UMP Ram to I2C and the firmware will 766 * update the record type from 0xf2 to 0x02. 767 */ 768 769 /* Allocate a 15.5k buffer + 2 bytes for version number 770 * (Firmware Record) */ 771 buffer_size = (((1024 * 16) - 512 ) + 772 sizeof(struct ti_i2c_firmware_rec)); 773 774 buffer = kmalloc(buffer_size, GFP_KERNEL); 775 if (!buffer) { 776 dev_err(dev, "%s - out of memory\n", __func__); 777 return -ENOMEM; 778 } 779 780 // Set entire image of 0xffs 781 memset(buffer, 0xff, buffer_size); 782 783 err = request_firmware(&fw, fw_name, dev); 784 if (err) { 785 dev_err(dev, "Failed to load image \"%s\" err %d\n", 786 fw_name, err); 787 kfree(buffer); 788 return err; 789 } 790 791 /* Save Download Version Number */ 792 OperationalMajorVersion = fw->data[0]; 793 OperationalMinorVersion = fw->data[1]; 794 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 795 796 /* Copy version number into firmware record */ 797 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 798 799 firmware_rec->Ver_Major = OperationalMajorVersion; 800 firmware_rec->Ver_Minor = OperationalMinorVersion; 801 802 /* Pointer to fw_down memory image */ 803 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 804 805 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 806 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 807 le16_to_cpu(img_header->Length)); 808 809 release_firmware(fw); 810 811 for (i=0; i < buffer_size; i++) { 812 cs = (__u8)(cs + buffer[i]); 813 } 814 815 kfree(buffer); 816 817 /* Build new header */ 818 i2c_header = (struct ti_i2c_desc *)header; 819 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 820 821 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 822 i2c_header->Size = (__u16)buffer_size; 823 i2c_header->CheckSum = cs; 824 firmware_rec->Ver_Major = OperationalMajorVersion; 825 firmware_rec->Ver_Minor = OperationalMinorVersion; 826 827 return 0; 828} 829 830/* Try to figure out what type of I2c we have */ 831static int i2c_type_bootmode(struct edgeport_serial *serial) 832{ 833 struct device *dev = &serial->serial->dev->dev; 834 int status; 835 u8 *data; 836 837 data = kmalloc(1, GFP_KERNEL); 838 if (!data) { 839 dev_err(dev, "%s - out of memory\n", __func__); 840 return -ENOMEM; 841 } 842 843 /* Try to read type 2 */ 844 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 845 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 846 if (status) 847 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 848 else 849 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 850 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 851 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 852 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 853 goto out; 854 } 855 856 /* Try to read type 3 */ 857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 858 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 859 if (status) 860 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 861 else 862 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 863 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 864 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 866 goto out; 867 } 868 869 dev_dbg(dev, "%s - Unknown\n", __func__); 870 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 871 status = -ENODEV; 872out: 873 kfree(data); 874 return status; 875} 876 877static int bulk_xfer(struct usb_serial *serial, void *buffer, 878 int length, int *num_sent) 879{ 880 int status; 881 882 status = usb_bulk_msg(serial->dev, 883 usb_sndbulkpipe(serial->dev, 884 serial->port[0]->bulk_out_endpointAddress), 885 buffer, length, num_sent, 1000); 886 return status; 887} 888 889/* Download given firmware image to the device (IN BOOT MODE) */ 890static int download_code(struct edgeport_serial *serial, __u8 *image, 891 int image_length) 892{ 893 int status = 0; 894 int pos; 895 int transfer; 896 int done; 897 898 /* Transfer firmware image */ 899 for (pos = 0; pos < image_length; ) { 900 /* Read the next buffer from file */ 901 transfer = image_length - pos; 902 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 903 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 904 905 /* Transfer data */ 906 status = bulk_xfer(serial->serial, &image[pos], 907 transfer, &done); 908 if (status) 909 break; 910 /* Advance buffer pointer */ 911 pos += done; 912 } 913 914 return status; 915} 916 917/* FIXME!!! */ 918static int config_boot_dev(struct usb_device *dev) 919{ 920 return 0; 921} 922 923static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 924{ 925 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 926} 927 928/** 929 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 930 * 931 * This routine downloads the main operating code into the TI5052, using the 932 * boot code already burned into E2PROM or ROM. 933 */ 934static int download_fw(struct edgeport_serial *serial) 935{ 936 struct device *dev = &serial->serial->dev->dev; 937 int status = 0; 938 int start_address; 939 struct edge_ti_manuf_descriptor *ti_manuf_desc; 940 struct usb_interface_descriptor *interface; 941 int download_cur_ver; 942 int download_new_ver; 943 944 /* This routine is entered by both the BOOT mode and the Download mode 945 * We can determine which code is running by the reading the config 946 * descriptor and if we have only one bulk pipe it is in boot mode 947 */ 948 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 949 950 /* Default to type 2 i2c */ 951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 952 953 status = choose_config(serial->serial->dev); 954 if (status) 955 return status; 956 957 interface = &serial->serial->interface->cur_altsetting->desc; 958 if (!interface) { 959 dev_err(dev, "%s - no interface set, error!\n", __func__); 960 return -ENODEV; 961 } 962 963 /* 964 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 965 * if we have more than one endpoint we are definitely in download 966 * mode 967 */ 968 if (interface->bNumEndpoints > 1) 969 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 970 else 971 /* Otherwise we will remain in configuring mode */ 972 serial->product_info.TiMode = TI_MODE_CONFIGURING; 973 974 /********************************************************************/ 975 /* Download Mode */ 976 /********************************************************************/ 977 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 978 struct ti_i2c_desc *rom_desc; 979 980 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 981 982 status = check_i2c_image(serial); 983 if (status) { 984 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 985 return status; 986 } 987 988 /* Validate Hardware version number 989 * Read Manufacturing Descriptor from TI Based Edgeport 990 */ 991 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 992 if (!ti_manuf_desc) { 993 dev_err(dev, "%s - out of memory.\n", __func__); 994 return -ENOMEM; 995 } 996 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 997 if (status) { 998 kfree(ti_manuf_desc); 999 return status; 1000 } 1001 1002 /* Check version number of ION descriptor */ 1003 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1004 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1005 __func__, ti_cpu_rev(ti_manuf_desc)); 1006 kfree(ti_manuf_desc); 1007 return -EINVAL; 1008 } 1009 1010 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1011 if (!rom_desc) { 1012 dev_err(dev, "%s - out of memory.\n", __func__); 1013 kfree(ti_manuf_desc); 1014 return -ENOMEM; 1015 } 1016 1017 /* Search for type 2 record (firmware record) */ 1018 start_address = get_descriptor_addr(serial, 1019 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1020 if (start_address != 0) { 1021 struct ti_i2c_firmware_rec *firmware_version; 1022 u8 *record; 1023 1024 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1025 1026 firmware_version = kmalloc(sizeof(*firmware_version), 1027 GFP_KERNEL); 1028 if (!firmware_version) { 1029 dev_err(dev, "%s - out of memory.\n", __func__); 1030 kfree(rom_desc); 1031 kfree(ti_manuf_desc); 1032 return -ENOMEM; 1033 } 1034 1035 /* Validate version number 1036 * Read the descriptor data 1037 */ 1038 status = read_rom(serial, start_address + 1039 sizeof(struct ti_i2c_desc), 1040 sizeof(struct ti_i2c_firmware_rec), 1041 (__u8 *)firmware_version); 1042 if (status) { 1043 kfree(firmware_version); 1044 kfree(rom_desc); 1045 kfree(ti_manuf_desc); 1046 return status; 1047 } 1048 1049 /* Check version number of download with current 1050 version in I2c */ 1051 download_cur_ver = (firmware_version->Ver_Major << 8) + 1052 (firmware_version->Ver_Minor); 1053 download_new_ver = (OperationalMajorVersion << 8) + 1054 (OperationalMinorVersion); 1055 1056 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1057 __func__, firmware_version->Ver_Major, 1058 firmware_version->Ver_Minor, 1059 OperationalMajorVersion, 1060 OperationalMinorVersion); 1061 1062 /* Check if we have an old version in the I2C and 1063 update if necessary */ 1064 if (download_cur_ver < download_new_ver) { 1065 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1066 __func__, 1067 firmware_version->Ver_Major, 1068 firmware_version->Ver_Minor, 1069 OperationalMajorVersion, 1070 OperationalMinorVersion); 1071 1072 record = kmalloc(1, GFP_KERNEL); 1073 if (!record) { 1074 dev_err(dev, "%s - out of memory.\n", 1075 __func__); 1076 kfree(firmware_version); 1077 kfree(rom_desc); 1078 kfree(ti_manuf_desc); 1079 return -ENOMEM; 1080 } 1081 /* In order to update the I2C firmware we must 1082 * change the type 2 record to type 0xF2. This 1083 * will force the UMP to come up in Boot Mode. 1084 * Then while in boot mode, the driver will 1085 * download the latest firmware (padded to 1086 * 15.5k) into the UMP ram. Finally when the 1087 * device comes back up in download mode the 1088 * driver will cause the new firmware to be 1089 * copied from the UMP Ram to I2C and the 1090 * firmware will update the record type from 1091 * 0xf2 to 0x02. 1092 */ 1093 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1094 1095 /* Change the I2C Firmware record type to 1096 0xf2 to trigger an update */ 1097 status = write_rom(serial, start_address, 1098 sizeof(*record), record); 1099 if (status) { 1100 kfree(record); 1101 kfree(firmware_version); 1102 kfree(rom_desc); 1103 kfree(ti_manuf_desc); 1104 return status; 1105 } 1106 1107 /* verify the write -- must do this in order 1108 * for write to complete before we do the 1109 * hardware reset 1110 */ 1111 status = read_rom(serial, 1112 start_address, 1113 sizeof(*record), 1114 record); 1115 if (status) { 1116 kfree(record); 1117 kfree(firmware_version); 1118 kfree(rom_desc); 1119 kfree(ti_manuf_desc); 1120 return status; 1121 } 1122 1123 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1124 dev_err(dev, "%s - error resetting device\n", __func__); 1125 kfree(record); 1126 kfree(firmware_version); 1127 kfree(rom_desc); 1128 kfree(ti_manuf_desc); 1129 return -ENODEV; 1130 } 1131 1132 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1133 1134 /* Reset UMP -- Back to BOOT MODE */ 1135 status = ti_vsend_sync(serial->serial->dev, 1136 UMPC_HARDWARE_RESET, 1137 0, 0, NULL, 0); 1138 1139 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1140 1141 /* return an error on purpose. */ 1142 kfree(record); 1143 kfree(firmware_version); 1144 kfree(rom_desc); 1145 kfree(ti_manuf_desc); 1146 return -ENODEV; 1147 } 1148 kfree(firmware_version); 1149 } 1150 /* Search for type 0xF2 record (firmware blank record) */ 1151 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1152#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1153 sizeof(struct ti_i2c_firmware_rec)) 1154 __u8 *header; 1155 __u8 *vheader; 1156 1157 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1158 if (!header) { 1159 dev_err(dev, "%s - out of memory.\n", __func__); 1160 kfree(rom_desc); 1161 kfree(ti_manuf_desc); 1162 return -ENOMEM; 1163 } 1164 1165 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1166 if (!vheader) { 1167 dev_err(dev, "%s - out of memory.\n", __func__); 1168 kfree(header); 1169 kfree(rom_desc); 1170 kfree(ti_manuf_desc); 1171 return -ENOMEM; 1172 } 1173 1174 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1175 1176 /* 1177 * In order to update the I2C firmware we must change 1178 * the type 2 record to type 0xF2. This will force the 1179 * UMP to come up in Boot Mode. Then while in boot 1180 * mode, the driver will download the latest firmware 1181 * (padded to 15.5k) into the UMP ram. Finally when the 1182 * device comes back up in download mode the driver 1183 * will cause the new firmware to be copied from the 1184 * UMP Ram to I2C and the firmware will update the 1185 * record type from 0xf2 to 0x02. 1186 */ 1187 status = build_i2c_fw_hdr(header, dev); 1188 if (status) { 1189 kfree(vheader); 1190 kfree(header); 1191 kfree(rom_desc); 1192 kfree(ti_manuf_desc); 1193 return -EINVAL; 1194 } 1195 1196 /* Update I2C with type 0xf2 record with correct 1197 size and checksum */ 1198 status = write_rom(serial, 1199 start_address, 1200 HEADER_SIZE, 1201 header); 1202 if (status) { 1203 kfree(vheader); 1204 kfree(header); 1205 kfree(rom_desc); 1206 kfree(ti_manuf_desc); 1207 return -EINVAL; 1208 } 1209 1210 /* verify the write -- must do this in order for 1211 write to complete before we do the hardware reset */ 1212 status = read_rom(serial, start_address, 1213 HEADER_SIZE, vheader); 1214 1215 if (status) { 1216 dev_dbg(dev, "%s - can't read header back\n", __func__); 1217 kfree(vheader); 1218 kfree(header); 1219 kfree(rom_desc); 1220 kfree(ti_manuf_desc); 1221 return status; 1222 } 1223 if (memcmp(vheader, header, HEADER_SIZE)) { 1224 dev_dbg(dev, "%s - write download record failed\n", __func__); 1225 kfree(vheader); 1226 kfree(header); 1227 kfree(rom_desc); 1228 kfree(ti_manuf_desc); 1229 return -EINVAL; 1230 } 1231 1232 kfree(vheader); 1233 kfree(header); 1234 1235 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1236 1237 /* Tell firmware to copy download image into I2C */ 1238 status = ti_vsend_sync(serial->serial->dev, 1239 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1240 1241 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1242 if (status) { 1243 dev_err(dev, 1244 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1245 __func__); 1246 kfree(rom_desc); 1247 kfree(ti_manuf_desc); 1248 return status; 1249 } 1250 } 1251 1252 // The device is running the download code 1253 kfree(rom_desc); 1254 kfree(ti_manuf_desc); 1255 return 0; 1256 } 1257 1258 /********************************************************************/ 1259 /* Boot Mode */ 1260 /********************************************************************/ 1261 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1262 1263 /* Configure the TI device so we can use the BULK pipes for download */ 1264 status = config_boot_dev(serial->serial->dev); 1265 if (status) 1266 return status; 1267 1268 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1269 != USB_VENDOR_ID_ION) { 1270 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1271 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1272 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1273 goto stayinbootmode; 1274 } 1275 1276 /* We have an ION device (I2c Must be programmed) 1277 Determine I2C image type */ 1278 if (i2c_type_bootmode(serial)) 1279 goto stayinbootmode; 1280 1281 /* Check for ION Vendor ID and that the I2C is valid */ 1282 if (!check_i2c_image(serial)) { 1283 struct ti_i2c_image_header *header; 1284 int i; 1285 __u8 cs = 0; 1286 __u8 *buffer; 1287 int buffer_size; 1288 int err; 1289 const struct firmware *fw; 1290 const char *fw_name = "edgeport/down3.bin"; 1291 1292 /* Validate Hardware version number 1293 * Read Manufacturing Descriptor from TI Based Edgeport 1294 */ 1295 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1296 if (!ti_manuf_desc) { 1297 dev_err(dev, "%s - out of memory.\n", __func__); 1298 return -ENOMEM; 1299 } 1300 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1301 if (status) { 1302 kfree(ti_manuf_desc); 1303 goto stayinbootmode; 1304 } 1305 1306 /* Check for version 2 */ 1307 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1308 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1309 __func__, ti_cpu_rev(ti_manuf_desc)); 1310 kfree(ti_manuf_desc); 1311 goto stayinbootmode; 1312 } 1313 1314 kfree(ti_manuf_desc); 1315 1316 /* 1317 * In order to update the I2C firmware we must change the type 1318 * 2 record to type 0xF2. This will force the UMP to come up 1319 * in Boot Mode. Then while in boot mode, the driver will 1320 * download the latest firmware (padded to 15.5k) into the 1321 * UMP ram. Finally when the device comes back up in download 1322 * mode the driver will cause the new firmware to be copied 1323 * from the UMP Ram to I2C and the firmware will update the 1324 * record type from 0xf2 to 0x02. 1325 * 1326 * Do we really have to copy the whole firmware image, 1327 * or could we do this in place! 1328 */ 1329 1330 /* Allocate a 15.5k buffer + 3 byte header */ 1331 buffer_size = (((1024 * 16) - 512) + 1332 sizeof(struct ti_i2c_image_header)); 1333 buffer = kmalloc(buffer_size, GFP_KERNEL); 1334 if (!buffer) { 1335 dev_err(dev, "%s - out of memory\n", __func__); 1336 return -ENOMEM; 1337 } 1338 1339 /* Initialize the buffer to 0xff (pad the buffer) */ 1340 memset(buffer, 0xff, buffer_size); 1341 1342 err = request_firmware(&fw, fw_name, dev); 1343 if (err) { 1344 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1345 fw_name, err); 1346 kfree(buffer); 1347 return err; 1348 } 1349 memcpy(buffer, &fw->data[4], fw->size - 4); 1350 release_firmware(fw); 1351 1352 for (i = sizeof(struct ti_i2c_image_header); 1353 i < buffer_size; i++) { 1354 cs = (__u8)(cs + buffer[i]); 1355 } 1356 1357 header = (struct ti_i2c_image_header *)buffer; 1358 1359 /* update length and checksum after padding */ 1360 header->Length = cpu_to_le16((__u16)(buffer_size - 1361 sizeof(struct ti_i2c_image_header))); 1362 header->CheckSum = cs; 1363 1364 /* Download the operational code */ 1365 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1366 status = download_code(serial, buffer, buffer_size); 1367 1368 kfree(buffer); 1369 1370 if (status) { 1371 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1372 return status; 1373 } 1374 1375 /* Device will reboot */ 1376 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1377 1378 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1379 1380 /* return an error on purpose */ 1381 return -ENODEV; 1382 } 1383 1384stayinbootmode: 1385 /* Eprom is invalid or blank stay in boot mode */ 1386 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1387 serial->product_info.TiMode = TI_MODE_BOOT; 1388 1389 return 0; 1390} 1391 1392 1393static int ti_do_config(struct edgeport_port *port, int feature, int on) 1394{ 1395 int port_number = port->port->number - port->port->serial->minor; 1396 on = !!on; /* 1 or 0 not bitmask */ 1397 return send_cmd(port->port->serial->dev, 1398 feature, (__u8)(UMPM_UART1_PORT + port_number), 1399 on, NULL, 0); 1400} 1401 1402 1403static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1404{ 1405 int status = 0; 1406 1407 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1408 1409 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1410 if (status) 1411 return status; 1412 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1413 if (status) 1414 return status; 1415 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1416} 1417 1418/* Convert TI LSR to standard UART flags */ 1419static __u8 map_line_status(__u8 ti_lsr) 1420{ 1421 __u8 lsr = 0; 1422 1423#define MAP_FLAG(flagUmp, flagUart) \ 1424 if (ti_lsr & flagUmp) \ 1425 lsr |= flagUart; 1426 1427 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1428 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1429 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1430 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1431 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1432 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1433 1434#undef MAP_FLAG 1435 1436 return lsr; 1437} 1438 1439static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1440{ 1441 struct async_icount *icount; 1442 struct tty_struct *tty; 1443 1444 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1445 1446 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1447 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1448 icount = &edge_port->port->icount; 1449 1450 /* update input line counters */ 1451 if (msr & EDGEPORT_MSR_DELTA_CTS) 1452 icount->cts++; 1453 if (msr & EDGEPORT_MSR_DELTA_DSR) 1454 icount->dsr++; 1455 if (msr & EDGEPORT_MSR_DELTA_CD) 1456 icount->dcd++; 1457 if (msr & EDGEPORT_MSR_DELTA_RI) 1458 icount->rng++; 1459 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1460 } 1461 1462 /* Save the new modem status */ 1463 edge_port->shadow_msr = msr & 0xf0; 1464 1465 tty = tty_port_tty_get(&edge_port->port->port); 1466 /* handle CTS flow control */ 1467 if (tty && C_CRTSCTS(tty)) { 1468 if (msr & EDGEPORT_MSR_CTS) { 1469 tty->hw_stopped = 0; 1470 tty_wakeup(tty); 1471 } else { 1472 tty->hw_stopped = 1; 1473 } 1474 } 1475 tty_kref_put(tty); 1476} 1477 1478static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1479 __u8 lsr, __u8 data) 1480{ 1481 struct async_icount *icount; 1482 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1483 LSR_FRM_ERR | LSR_BREAK)); 1484 1485 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1486 1487 edge_port->shadow_lsr = lsr; 1488 1489 if (new_lsr & LSR_BREAK) 1490 /* 1491 * Parity and Framing errors only count if they 1492 * occur exclusive of a break being received. 1493 */ 1494 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1495 1496 /* Place LSR data byte into Rx buffer */ 1497 if (lsr_data) 1498 edge_tty_recv(edge_port->port, &data, 1); 1499 1500 /* update input line counters */ 1501 icount = &edge_port->port->icount; 1502 if (new_lsr & LSR_BREAK) 1503 icount->brk++; 1504 if (new_lsr & LSR_OVER_ERR) 1505 icount->overrun++; 1506 if (new_lsr & LSR_PAR_ERR) 1507 icount->parity++; 1508 if (new_lsr & LSR_FRM_ERR) 1509 icount->frame++; 1510} 1511 1512 1513static void edge_interrupt_callback(struct urb *urb) 1514{ 1515 struct edgeport_serial *edge_serial = urb->context; 1516 struct usb_serial_port *port; 1517 struct edgeport_port *edge_port; 1518 struct device *dev; 1519 unsigned char *data = urb->transfer_buffer; 1520 int length = urb->actual_length; 1521 int port_number; 1522 int function; 1523 int retval; 1524 __u8 lsr; 1525 __u8 msr; 1526 int status = urb->status; 1527 1528 switch (status) { 1529 case 0: 1530 /* success */ 1531 break; 1532 case -ECONNRESET: 1533 case -ENOENT: 1534 case -ESHUTDOWN: 1535 /* this urb is terminated, clean up */ 1536 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1537 __func__, status); 1538 return; 1539 default: 1540 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1541 "%d\n", __func__, status); 1542 goto exit; 1543 } 1544 1545 if (!length) { 1546 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1547 goto exit; 1548 } 1549 1550 dev = &edge_serial->serial->dev->dev; 1551 usb_serial_debug_data(dev, __func__, length, data); 1552 1553 if (length != 2) { 1554 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1555 goto exit; 1556 } 1557 1558 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1559 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1560 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1561 port_number, function, data[1]); 1562 port = edge_serial->serial->port[port_number]; 1563 edge_port = usb_get_serial_port_data(port); 1564 if (!edge_port) { 1565 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1566 return; 1567 } 1568 switch (function) { 1569 case TIUMP_INTERRUPT_CODE_LSR: 1570 lsr = map_line_status(data[1]); 1571 if (lsr & UMP_UART_LSR_DATA_MASK) { 1572 /* Save the LSR event for bulk read 1573 completion routine */ 1574 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1575 __func__, port_number, lsr); 1576 edge_port->lsr_event = 1; 1577 edge_port->lsr_mask = lsr; 1578 } else { 1579 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1580 __func__, port_number, lsr); 1581 handle_new_lsr(edge_port, 0, lsr, 0); 1582 } 1583 break; 1584 1585 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1586 /* Copy MSR from UMP */ 1587 msr = data[1]; 1588 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1589 __func__, port_number, msr); 1590 handle_new_msr(edge_port, msr); 1591 break; 1592 1593 default: 1594 dev_err(&urb->dev->dev, 1595 "%s - Unknown Interrupt code from UMP %x\n", 1596 __func__, data[1]); 1597 break; 1598 1599 } 1600 1601exit: 1602 retval = usb_submit_urb(urb, GFP_ATOMIC); 1603 if (retval) 1604 dev_err(&urb->dev->dev, 1605 "%s - usb_submit_urb failed with result %d\n", 1606 __func__, retval); 1607} 1608 1609static void edge_bulk_in_callback(struct urb *urb) 1610{ 1611 struct edgeport_port *edge_port = urb->context; 1612 struct device *dev = &edge_port->port->dev; 1613 unsigned char *data = urb->transfer_buffer; 1614 int retval = 0; 1615 int port_number; 1616 int status = urb->status; 1617 1618 switch (status) { 1619 case 0: 1620 /* success */ 1621 break; 1622 case -ECONNRESET: 1623 case -ENOENT: 1624 case -ESHUTDOWN: 1625 /* this urb is terminated, clean up */ 1626 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1627 return; 1628 default: 1629 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1630 } 1631 1632 if (status == -EPIPE) 1633 goto exit; 1634 1635 if (status) { 1636 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1637 return; 1638 } 1639 1640 port_number = edge_port->port->number - edge_port->port->serial->minor; 1641 1642 if (edge_port->lsr_event) { 1643 edge_port->lsr_event = 0; 1644 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1645 __func__, port_number, edge_port->lsr_mask, *data); 1646 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1647 /* Adjust buffer length/pointer */ 1648 --urb->actual_length; 1649 ++data; 1650 } 1651 1652 if (urb->actual_length) { 1653 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1654 if (edge_port->close_pending) 1655 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1656 __func__); 1657 else 1658 edge_tty_recv(edge_port->port, data, 1659 urb->actual_length); 1660 edge_port->port->icount.rx += urb->actual_length; 1661 } 1662 1663exit: 1664 /* continue read unless stopped */ 1665 spin_lock(&edge_port->ep_lock); 1666 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1667 retval = usb_submit_urb(urb, GFP_ATOMIC); 1668 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1669 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1670 1671 spin_unlock(&edge_port->ep_lock); 1672 if (retval) 1673 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1674} 1675 1676static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1677 int length) 1678{ 1679 int queued; 1680 1681 queued = tty_insert_flip_string(&port->port, data, length); 1682 if (queued < length) 1683 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1684 __func__, length - queued); 1685 tty_flip_buffer_push(&port->port); 1686} 1687 1688static void edge_bulk_out_callback(struct urb *urb) 1689{ 1690 struct usb_serial_port *port = urb->context; 1691 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1692 int status = urb->status; 1693 struct tty_struct *tty; 1694 1695 edge_port->ep_write_urb_in_use = 0; 1696 1697 switch (status) { 1698 case 0: 1699 /* success */ 1700 break; 1701 case -ECONNRESET: 1702 case -ENOENT: 1703 case -ESHUTDOWN: 1704 /* this urb is terminated, clean up */ 1705 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1706 __func__, status); 1707 return; 1708 default: 1709 dev_err_console(port, "%s - nonzero write bulk status " 1710 "received: %d\n", __func__, status); 1711 } 1712 1713 /* send any buffered data */ 1714 tty = tty_port_tty_get(&port->port); 1715 edge_send(port, tty); 1716 tty_kref_put(tty); 1717} 1718 1719static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1720{ 1721 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1722 struct edgeport_serial *edge_serial; 1723 struct usb_device *dev; 1724 struct urb *urb; 1725 int port_number; 1726 int status; 1727 u16 open_settings; 1728 u8 transaction_timeout; 1729 1730 if (edge_port == NULL) 1731 return -ENODEV; 1732 1733 port_number = port->number - port->serial->minor; 1734 switch (port_number) { 1735 case 0: 1736 edge_port->uart_base = UMPMEM_BASE_UART1; 1737 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1738 break; 1739 case 1: 1740 edge_port->uart_base = UMPMEM_BASE_UART2; 1741 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1742 break; 1743 default: 1744 dev_err(&port->dev, "Unknown port number!!!\n"); 1745 return -ENODEV; 1746 } 1747 1748 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1749 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1750 1751 dev = port->serial->dev; 1752 1753 /* turn off loopback */ 1754 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1755 if (status) { 1756 dev_err(&port->dev, 1757 "%s - cannot send clear loopback command, %d\n", 1758 __func__, status); 1759 return status; 1760 } 1761 1762 /* set up the port settings */ 1763 if (tty) 1764 edge_set_termios(tty, port, &tty->termios); 1765 1766 /* open up the port */ 1767 1768 /* milliseconds to timeout for DMA transfer */ 1769 transaction_timeout = 2; 1770 1771 edge_port->ump_read_timeout = 1772 max(20, ((transaction_timeout * 3) / 2)); 1773 1774 /* milliseconds to timeout for DMA transfer */ 1775 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1776 UMP_PIPE_TRANS_TIMEOUT_ENA | 1777 (transaction_timeout << 2)); 1778 1779 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1780 1781 /* Tell TI to open and start the port */ 1782 status = send_cmd(dev, UMPC_OPEN_PORT, 1783 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1784 if (status) { 1785 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1786 __func__, status); 1787 return status; 1788 } 1789 1790 /* Start the DMA? */ 1791 status = send_cmd(dev, UMPC_START_PORT, 1792 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1793 if (status) { 1794 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1795 __func__, status); 1796 return status; 1797 } 1798 1799 /* Clear TX and RX buffers in UMP */ 1800 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1801 if (status) { 1802 dev_err(&port->dev, 1803 "%s - cannot send clear buffers command, %d\n", 1804 __func__, status); 1805 return status; 1806 } 1807 1808 /* Read Initial MSR */ 1809 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1810 (__u16)(UMPM_UART1_PORT + port_number), 1811 &edge_port->shadow_msr, 1); 1812 if (status) { 1813 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1814 __func__, status); 1815 return status; 1816 } 1817 1818 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1819 1820 /* Set Initial MCR */ 1821 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1822 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1823 1824 edge_serial = edge_port->edge_serial; 1825 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1826 return -ERESTARTSYS; 1827 if (edge_serial->num_ports_open == 0) { 1828 /* we are the first port to open, post the interrupt urb */ 1829 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1830 if (!urb) { 1831 dev_err(&port->dev, 1832 "%s - no interrupt urb present, exiting\n", 1833 __func__); 1834 status = -EINVAL; 1835 goto release_es_lock; 1836 } 1837 urb->context = edge_serial; 1838 status = usb_submit_urb(urb, GFP_KERNEL); 1839 if (status) { 1840 dev_err(&port->dev, 1841 "%s - usb_submit_urb failed with value %d\n", 1842 __func__, status); 1843 goto release_es_lock; 1844 } 1845 } 1846 1847 /* 1848 * reset the data toggle on the bulk endpoints to work around bug in 1849 * host controllers where things get out of sync some times 1850 */ 1851 usb_clear_halt(dev, port->write_urb->pipe); 1852 usb_clear_halt(dev, port->read_urb->pipe); 1853 1854 /* start up our bulk read urb */ 1855 urb = port->read_urb; 1856 if (!urb) { 1857 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1858 __func__); 1859 status = -EINVAL; 1860 goto unlink_int_urb; 1861 } 1862 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1863 urb->context = edge_port; 1864 status = usb_submit_urb(urb, GFP_KERNEL); 1865 if (status) { 1866 dev_err(&port->dev, 1867 "%s - read bulk usb_submit_urb failed with value %d\n", 1868 __func__, status); 1869 goto unlink_int_urb; 1870 } 1871 1872 ++edge_serial->num_ports_open; 1873 1874 port->port.drain_delay = 1; 1875 1876 goto release_es_lock; 1877 1878unlink_int_urb: 1879 if (edge_port->edge_serial->num_ports_open == 0) 1880 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1881release_es_lock: 1882 mutex_unlock(&edge_serial->es_lock); 1883 return status; 1884} 1885 1886static void edge_close(struct usb_serial_port *port) 1887{ 1888 struct edgeport_serial *edge_serial; 1889 struct edgeport_port *edge_port; 1890 struct usb_serial *serial = port->serial; 1891 unsigned long flags; 1892 int port_number; 1893 1894 edge_serial = usb_get_serial_data(port->serial); 1895 edge_port = usb_get_serial_port_data(port); 1896 if (edge_serial == NULL || edge_port == NULL) 1897 return; 1898 1899 /* The bulkreadcompletion routine will check 1900 * this flag and dump add read data */ 1901 edge_port->close_pending = 1; 1902 1903 usb_kill_urb(port->read_urb); 1904 usb_kill_urb(port->write_urb); 1905 edge_port->ep_write_urb_in_use = 0; 1906 spin_lock_irqsave(&edge_port->ep_lock, flags); 1907 kfifo_reset_out(&edge_port->write_fifo); 1908 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1909 1910 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1911 port_number = port->number - port->serial->minor; 1912 send_cmd(serial->dev, UMPC_CLOSE_PORT, 1913 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1914 1915 mutex_lock(&edge_serial->es_lock); 1916 --edge_port->edge_serial->num_ports_open; 1917 if (edge_port->edge_serial->num_ports_open <= 0) { 1918 /* last port is now closed, let's shut down our interrupt urb */ 1919 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1920 edge_port->edge_serial->num_ports_open = 0; 1921 } 1922 mutex_unlock(&edge_serial->es_lock); 1923 edge_port->close_pending = 0; 1924} 1925 1926static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1927 const unsigned char *data, int count) 1928{ 1929 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1930 1931 if (count == 0) { 1932 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1933 return 0; 1934 } 1935 1936 if (edge_port == NULL) 1937 return -ENODEV; 1938 if (edge_port->close_pending == 1) 1939 return -ENODEV; 1940 1941 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 1942 &edge_port->ep_lock); 1943 edge_send(port, tty); 1944 1945 return count; 1946} 1947 1948static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 1949{ 1950 int count, result; 1951 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1952 unsigned long flags; 1953 1954 spin_lock_irqsave(&edge_port->ep_lock, flags); 1955 1956 if (edge_port->ep_write_urb_in_use) { 1957 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1958 return; 1959 } 1960 1961 count = kfifo_out(&edge_port->write_fifo, 1962 port->write_urb->transfer_buffer, 1963 port->bulk_out_size); 1964 1965 if (count == 0) { 1966 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1967 return; 1968 } 1969 1970 edge_port->ep_write_urb_in_use = 1; 1971 1972 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1973 1974 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1975 1976 /* set up our urb */ 1977 port->write_urb->transfer_buffer_length = count; 1978 1979 /* send the data out the bulk port */ 1980 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1981 if (result) { 1982 dev_err_console(port, 1983 "%s - failed submitting write urb, error %d\n", 1984 __func__, result); 1985 edge_port->ep_write_urb_in_use = 0; 1986 /* TODO: reschedule edge_send */ 1987 } else 1988 edge_port->port->icount.tx += count; 1989 1990 /* wakeup any process waiting for writes to complete */ 1991 /* there is now more room in the buffer for new writes */ 1992 if (tty) 1993 tty_wakeup(tty); 1994} 1995 1996static int edge_write_room(struct tty_struct *tty) 1997{ 1998 struct usb_serial_port *port = tty->driver_data; 1999 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2000 int room = 0; 2001 unsigned long flags; 2002 2003 if (edge_port == NULL) 2004 return 0; 2005 if (edge_port->close_pending == 1) 2006 return 0; 2007 2008 spin_lock_irqsave(&edge_port->ep_lock, flags); 2009 room = kfifo_avail(&edge_port->write_fifo); 2010 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2011 2012 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2013 return room; 2014} 2015 2016static int edge_chars_in_buffer(struct tty_struct *tty) 2017{ 2018 struct usb_serial_port *port = tty->driver_data; 2019 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2020 int chars = 0; 2021 unsigned long flags; 2022 int ret; 2023 2024 if (edge_port == NULL) 2025 return 0; 2026 2027 spin_lock_irqsave(&edge_port->ep_lock, flags); 2028 chars = kfifo_len(&edge_port->write_fifo); 2029 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2030 2031 if (!chars) { 2032 ret = tx_active(edge_port); 2033 if (ret > 0) 2034 chars = ret; 2035 } 2036 2037 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2038 return chars; 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->number - 2137 edge_port->port->serial->minor; 2138 2139 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2140 2141 config = kmalloc (sizeof (*config), GFP_KERNEL); 2142 if (!config) { 2143 tty->termios = *old_termios; 2144 dev_err(dev, "%s - out of memory\n", __func__); 2145 return; 2146 } 2147 2148 cflag = tty->termios.c_cflag; 2149 2150 config->wFlags = 0; 2151 2152 /* These flags must be set */ 2153 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2154 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2155 config->bUartMode = (__u8)(edge_port->bUartMode); 2156 2157 switch (cflag & CSIZE) { 2158 case CS5: 2159 config->bDataBits = UMP_UART_CHAR5BITS; 2160 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2161 break; 2162 case CS6: 2163 config->bDataBits = UMP_UART_CHAR6BITS; 2164 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2165 break; 2166 case CS7: 2167 config->bDataBits = UMP_UART_CHAR7BITS; 2168 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2169 break; 2170 default: 2171 case CS8: 2172 config->bDataBits = UMP_UART_CHAR8BITS; 2173 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2174 break; 2175 } 2176 2177 if (cflag & PARENB) { 2178 if (cflag & PARODD) { 2179 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2180 config->bParity = UMP_UART_ODDPARITY; 2181 dev_dbg(dev, "%s - parity = odd\n", __func__); 2182 } else { 2183 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2184 config->bParity = UMP_UART_EVENPARITY; 2185 dev_dbg(dev, "%s - parity = even\n", __func__); 2186 } 2187 } else { 2188 config->bParity = UMP_UART_NOPARITY; 2189 dev_dbg(dev, "%s - parity = none\n", __func__); 2190 } 2191 2192 if (cflag & CSTOPB) { 2193 config->bStopBits = UMP_UART_STOPBIT2; 2194 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2195 } else { 2196 config->bStopBits = UMP_UART_STOPBIT1; 2197 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2198 } 2199 2200 /* figure out the flow control settings */ 2201 if (cflag & CRTSCTS) { 2202 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2203 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2204 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2205 } else { 2206 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2207 tty->hw_stopped = 0; 2208 restart_read(edge_port); 2209 } 2210 2211 /* if we are implementing XON/XOFF, set the start and stop 2212 character in the device */ 2213 config->cXon = START_CHAR(tty); 2214 config->cXoff = STOP_CHAR(tty); 2215 2216 /* if we are implementing INBOUND XON/XOFF */ 2217 if (I_IXOFF(tty)) { 2218 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2219 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2220 __func__, config->cXon, config->cXoff); 2221 } else 2222 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2223 2224 /* if we are implementing OUTBOUND XON/XOFF */ 2225 if (I_IXON(tty)) { 2226 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2227 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2228 __func__, config->cXon, config->cXoff); 2229 } else 2230 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2231 2232 tty->termios.c_cflag &= ~CMSPAR; 2233 2234 /* Round the baud rate */ 2235 baud = tty_get_baud_rate(tty); 2236 if (!baud) { 2237 /* pick a default, any default... */ 2238 baud = 9600; 2239 } else 2240 tty_encode_baud_rate(tty, baud, baud); 2241 2242 edge_port->baud_rate = baud; 2243 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2244 2245 /* FIXME: Recompute actual baud from divisor here */ 2246 2247 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2248 2249 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2250 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2251 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2252 dev_dbg(dev, "bParity: %d\n", config->bParity); 2253 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2254 dev_dbg(dev, "cXon: %d\n", config->cXon); 2255 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2256 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2257 2258 /* move the word values into big endian mode */ 2259 cpu_to_be16s(&config->wFlags); 2260 cpu_to_be16s(&config->wBaudRate); 2261 2262 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2263 (__u8)(UMPM_UART1_PORT + port_number), 2264 0, (__u8 *)config, sizeof(*config)); 2265 if (status) 2266 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2267 __func__, status); 2268 kfree(config); 2269} 2270 2271static void edge_set_termios(struct tty_struct *tty, 2272 struct usb_serial_port *port, struct ktermios *old_termios) 2273{ 2274 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2275 unsigned int cflag; 2276 2277 cflag = tty->termios.c_cflag; 2278 2279 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2280 tty->termios.c_cflag, tty->termios.c_iflag); 2281 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2282 old_termios->c_cflag, old_termios->c_iflag); 2283 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2284 2285 if (edge_port == NULL) 2286 return; 2287 /* change the port settings to the new ones specified */ 2288 change_port_settings(tty, edge_port, old_termios); 2289} 2290 2291static int edge_tiocmset(struct tty_struct *tty, 2292 unsigned int set, unsigned int clear) 2293{ 2294 struct usb_serial_port *port = tty->driver_data; 2295 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2296 unsigned int mcr; 2297 unsigned long flags; 2298 2299 spin_lock_irqsave(&edge_port->ep_lock, flags); 2300 mcr = edge_port->shadow_mcr; 2301 if (set & TIOCM_RTS) 2302 mcr |= MCR_RTS; 2303 if (set & TIOCM_DTR) 2304 mcr |= MCR_DTR; 2305 if (set & TIOCM_LOOP) 2306 mcr |= MCR_LOOPBACK; 2307 2308 if (clear & TIOCM_RTS) 2309 mcr &= ~MCR_RTS; 2310 if (clear & TIOCM_DTR) 2311 mcr &= ~MCR_DTR; 2312 if (clear & TIOCM_LOOP) 2313 mcr &= ~MCR_LOOPBACK; 2314 2315 edge_port->shadow_mcr = mcr; 2316 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2317 2318 restore_mcr(edge_port, mcr); 2319 return 0; 2320} 2321 2322static int edge_tiocmget(struct tty_struct *tty) 2323{ 2324 struct usb_serial_port *port = tty->driver_data; 2325 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2326 unsigned int result = 0; 2327 unsigned int msr; 2328 unsigned int mcr; 2329 unsigned long flags; 2330 2331 spin_lock_irqsave(&edge_port->ep_lock, flags); 2332 2333 msr = edge_port->shadow_msr; 2334 mcr = edge_port->shadow_mcr; 2335 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2336 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2337 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2338 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2339 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2340 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2341 2342 2343 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2344 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2345 2346 return result; 2347} 2348 2349static int get_serial_info(struct edgeport_port *edge_port, 2350 struct serial_struct __user *retinfo) 2351{ 2352 struct serial_struct tmp; 2353 unsigned cwait; 2354 2355 if (!retinfo) 2356 return -EFAULT; 2357 2358 cwait = edge_port->port->port.closing_wait; 2359 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2360 cwait = jiffies_to_msecs(cwait) / 10; 2361 2362 memset(&tmp, 0, sizeof(tmp)); 2363 2364 tmp.type = PORT_16550A; 2365 tmp.line = edge_port->port->serial->minor; 2366 tmp.port = edge_port->port->number; 2367 tmp.irq = 0; 2368 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2369 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2370 tmp.baud_base = 9600; 2371 tmp.close_delay = 5*HZ; 2372 tmp.closing_wait = cwait; 2373 2374 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2375 return -EFAULT; 2376 return 0; 2377} 2378 2379static int edge_ioctl(struct tty_struct *tty, 2380 unsigned int cmd, unsigned long arg) 2381{ 2382 struct usb_serial_port *port = tty->driver_data; 2383 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2384 2385 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2386 2387 switch (cmd) { 2388 case TIOCGSERIAL: 2389 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2390 return get_serial_info(edge_port, 2391 (struct serial_struct __user *) arg); 2392 } 2393 return -ENOIOCTLCMD; 2394} 2395 2396static void edge_break(struct tty_struct *tty, int break_state) 2397{ 2398 struct usb_serial_port *port = tty->driver_data; 2399 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2400 int status; 2401 int bv = 0; /* Off */ 2402 2403 tty_wait_until_sent(tty, 0); 2404 2405 if (break_state == -1) 2406 bv = 1; /* On */ 2407 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2408 if (status) 2409 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2410 __func__, status); 2411} 2412 2413static int edge_startup(struct usb_serial *serial) 2414{ 2415 struct edgeport_serial *edge_serial; 2416 int status; 2417 2418 /* create our private serial structure */ 2419 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2420 if (edge_serial == NULL) { 2421 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2422 return -ENOMEM; 2423 } 2424 mutex_init(&edge_serial->es_lock); 2425 edge_serial->serial = serial; 2426 usb_set_serial_data(serial, edge_serial); 2427 2428 status = download_fw(edge_serial); 2429 if (status) { 2430 kfree(edge_serial); 2431 return status; 2432 } 2433 2434 return 0; 2435} 2436 2437static void edge_disconnect(struct usb_serial *serial) 2438{ 2439} 2440 2441static void edge_release(struct usb_serial *serial) 2442{ 2443 kfree(usb_get_serial_data(serial)); 2444} 2445 2446static int edge_port_probe(struct usb_serial_port *port) 2447{ 2448 struct edgeport_port *edge_port; 2449 int ret; 2450 2451 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2452 if (!edge_port) 2453 return -ENOMEM; 2454 2455 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2456 GFP_KERNEL); 2457 if (ret) { 2458 kfree(edge_port); 2459 return -ENOMEM; 2460 } 2461 2462 spin_lock_init(&edge_port->ep_lock); 2463 edge_port->port = port; 2464 edge_port->edge_serial = usb_get_serial_data(port->serial); 2465 edge_port->bUartMode = default_uart_mode; 2466 2467 usb_set_serial_port_data(port, edge_port); 2468 2469 ret = edge_create_sysfs_attrs(port); 2470 if (ret) { 2471 kfifo_free(&edge_port->write_fifo); 2472 kfree(edge_port); 2473 return ret; 2474 } 2475 2476 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2477 2478 return 0; 2479} 2480 2481static int edge_port_remove(struct usb_serial_port *port) 2482{ 2483 struct edgeport_port *edge_port; 2484 2485 edge_port = usb_get_serial_port_data(port); 2486 edge_remove_sysfs_attrs(port); 2487 kfifo_free(&edge_port->write_fifo); 2488 kfree(edge_port); 2489 2490 return 0; 2491} 2492 2493/* Sysfs Attributes */ 2494 2495static ssize_t show_uart_mode(struct device *dev, 2496 struct device_attribute *attr, char *buf) 2497{ 2498 struct usb_serial_port *port = to_usb_serial_port(dev); 2499 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2500 2501 return sprintf(buf, "%d\n", edge_port->bUartMode); 2502} 2503 2504static ssize_t store_uart_mode(struct device *dev, 2505 struct device_attribute *attr, const char *valbuf, size_t count) 2506{ 2507 struct usb_serial_port *port = to_usb_serial_port(dev); 2508 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2509 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2510 2511 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2512 2513 if (v < 256) 2514 edge_port->bUartMode = v; 2515 else 2516 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2517 2518 return count; 2519} 2520 2521static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2522 store_uart_mode); 2523 2524static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2525{ 2526 return device_create_file(&port->dev, &dev_attr_uart_mode); 2527} 2528 2529static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2530{ 2531 device_remove_file(&port->dev, &dev_attr_uart_mode); 2532 return 0; 2533} 2534 2535 2536static struct usb_serial_driver edgeport_1port_device = { 2537 .driver = { 2538 .owner = THIS_MODULE, 2539 .name = "edgeport_ti_1", 2540 }, 2541 .description = "Edgeport TI 1 port adapter", 2542 .id_table = edgeport_1port_id_table, 2543 .num_ports = 1, 2544 .open = edge_open, 2545 .close = edge_close, 2546 .throttle = edge_throttle, 2547 .unthrottle = edge_unthrottle, 2548 .attach = edge_startup, 2549 .disconnect = edge_disconnect, 2550 .release = edge_release, 2551 .port_probe = edge_port_probe, 2552 .port_remove = edge_port_remove, 2553 .ioctl = edge_ioctl, 2554 .set_termios = edge_set_termios, 2555 .tiocmget = edge_tiocmget, 2556 .tiocmset = edge_tiocmset, 2557 .tiocmiwait = usb_serial_generic_tiocmiwait, 2558 .get_icount = usb_serial_generic_get_icount, 2559 .write = edge_write, 2560 .write_room = edge_write_room, 2561 .chars_in_buffer = edge_chars_in_buffer, 2562 .break_ctl = edge_break, 2563 .read_int_callback = edge_interrupt_callback, 2564 .read_bulk_callback = edge_bulk_in_callback, 2565 .write_bulk_callback = edge_bulk_out_callback, 2566}; 2567 2568static struct usb_serial_driver edgeport_2port_device = { 2569 .driver = { 2570 .owner = THIS_MODULE, 2571 .name = "edgeport_ti_2", 2572 }, 2573 .description = "Edgeport TI 2 port adapter", 2574 .id_table = edgeport_2port_id_table, 2575 .num_ports = 2, 2576 .open = edge_open, 2577 .close = edge_close, 2578 .throttle = edge_throttle, 2579 .unthrottle = edge_unthrottle, 2580 .attach = edge_startup, 2581 .disconnect = edge_disconnect, 2582 .release = edge_release, 2583 .port_probe = edge_port_probe, 2584 .port_remove = edge_port_remove, 2585 .ioctl = edge_ioctl, 2586 .set_termios = edge_set_termios, 2587 .tiocmget = edge_tiocmget, 2588 .tiocmset = edge_tiocmset, 2589 .tiocmiwait = usb_serial_generic_tiocmiwait, 2590 .get_icount = usb_serial_generic_get_icount, 2591 .write = edge_write, 2592 .write_room = edge_write_room, 2593 .chars_in_buffer = edge_chars_in_buffer, 2594 .break_ctl = edge_break, 2595 .read_int_callback = edge_interrupt_callback, 2596 .read_bulk_callback = edge_bulk_in_callback, 2597 .write_bulk_callback = edge_bulk_out_callback, 2598}; 2599 2600static struct usb_serial_driver * const serial_drivers[] = { 2601 &edgeport_1port_device, &edgeport_2port_device, NULL 2602}; 2603 2604module_usb_serial_driver(serial_drivers, id_table_combined); 2605 2606MODULE_AUTHOR(DRIVER_AUTHOR); 2607MODULE_DESCRIPTION(DRIVER_DESC); 2608MODULE_LICENSE("GPL"); 2609MODULE_FIRMWARE("edgeport/down3.bin"); 2610 2611module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2612MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2613 2614module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2615MODULE_PARM_DESC(ignore_cpu_rev, 2616 "Ignore the cpu revision when connecting to a device"); 2617 2618module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2619MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2620