io_ti.c revision 6d443d8499e4e59ffb949759cdded32730f8d2f6
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/* 44 * Version Information 45 */ 46#define DRIVER_VERSION "v0.7mode043006" 47#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 48#define DRIVER_DESC "Edgeport USB Serial Driver" 49 50#define EPROM_PAGE_SIZE 64 51 52 53/* different hardware types */ 54#define HARDWARE_TYPE_930 0 55#define HARDWARE_TYPE_TIUMP 1 56 57/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 58#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 59#define TI_MODE_BOOT 1 /* Staying in boot mode */ 60#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 61#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 62 transitioning to download mode */ 63 64/* read urb state */ 65#define EDGE_READ_URB_RUNNING 0 66#define EDGE_READ_URB_STOPPING 1 67#define EDGE_READ_URB_STOPPED 2 68 69#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 70 71#define EDGE_OUT_BUF_SIZE 1024 72 73 74/* Product information read from the Edgeport */ 75struct product_info { 76 int TiMode; /* Current TI Mode */ 77 __u8 hardware_type; /* Type of hardware */ 78} __attribute__((packed)); 79 80struct edgeport_port { 81 __u16 uart_base; 82 __u16 dma_address; 83 __u8 shadow_msr; 84 __u8 shadow_mcr; 85 __u8 shadow_lsr; 86 __u8 lsr_mask; 87 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 88 wait without data before completing 89 a read short */ 90 int baud_rate; 91 int close_pending; 92 int lsr_event; 93 struct async_icount icount; 94 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 95 waiting for msr change to 96 happen */ 97 struct edgeport_serial *edge_serial; 98 struct usb_serial_port *port; 99 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 100 spinlock_t ep_lock; 101 int ep_read_urb_state; 102 int ep_write_urb_in_use; 103 struct kfifo write_fifo; 104}; 105 106struct edgeport_serial { 107 struct product_info product_info; 108 u8 TI_I2C_Type; /* Type of I2C in UMP */ 109 u8 TiReadI2C; /* Set to TRUE if we have read the 110 I2c in Boot Mode */ 111 struct mutex es_lock; 112 int num_ports_open; 113 struct usb_serial *serial; 114}; 115 116 117/* Devices that this driver supports */ 118static const struct usb_device_id edgeport_1port_id_table[] = { 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 135 { } 136}; 137 138static const struct usb_device_id edgeport_2port_id_table[] = { 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 151 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 157 { } 158}; 159 160/* Devices that this driver supports */ 161static const struct usb_device_id id_table_combined[] = { 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 195 { } 196}; 197 198MODULE_DEVICE_TABLE(usb, id_table_combined); 199 200static struct usb_driver io_driver = { 201 .name = "io_ti", 202 .probe = usb_serial_probe, 203 .disconnect = usb_serial_disconnect, 204 .id_table = id_table_combined, 205 .no_dynamic_id = 1, 206}; 207 208 209static unsigned char OperationalMajorVersion; 210static unsigned char OperationalMinorVersion; 211static unsigned short OperationalBuildNumber; 212 213static bool debug; 214 215static int closing_wait = EDGE_CLOSING_WAIT; 216static bool ignore_cpu_rev; 217static int default_uart_mode; /* RS232 */ 218 219static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 220 unsigned char *data, int length); 221 222static void stop_read(struct edgeport_port *edge_port); 223static int restart_read(struct edgeport_port *edge_port); 224 225static void edge_set_termios(struct tty_struct *tty, 226 struct usb_serial_port *port, struct ktermios *old_termios); 227static void edge_send(struct tty_struct *tty); 228 229/* sysfs attributes */ 230static int edge_create_sysfs_attrs(struct usb_serial_port *port); 231static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 232 233 234static int ti_vread_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_rcvctrlpipe(dev, 0), request, 240 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 241 value, index, data, size, 1000); 242 if (status < 0) 243 return status; 244 if (status != size) { 245 dbg("%s - wanted to write %d, but only wrote %d", 246 __func__, size, status); 247 return -ECOMM; 248 } 249 return 0; 250} 251 252static int ti_vsend_sync(struct usb_device *dev, __u8 request, 253 __u16 value, __u16 index, u8 *data, int size) 254{ 255 int status; 256 257 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 258 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 259 value, index, data, size, 1000); 260 if (status < 0) 261 return status; 262 if (status != size) { 263 dbg("%s - wanted to write %d, but only wrote %d", 264 __func__, size, status); 265 return -ECOMM; 266 } 267 return 0; 268} 269 270static int send_cmd(struct usb_device *dev, __u8 command, 271 __u8 moduleid, __u16 value, u8 *data, 272 int size) 273{ 274 return ti_vsend_sync(dev, command, value, moduleid, data, size); 275} 276 277/* clear tx/rx buffers and fifo in TI UMP */ 278static int purge_port(struct usb_serial_port *port, __u16 mask) 279{ 280 int port_number = port->number - port->serial->minor; 281 282 dbg("%s - port %d, mask %x", __func__, port_number, mask); 283 284 return send_cmd(port->serial->dev, 285 UMPC_PURGE_PORT, 286 (__u8)(UMPM_UART1_PORT + port_number), 287 mask, 288 NULL, 289 0); 290} 291 292/** 293 * read_download_mem - Read edgeport memory from TI chip 294 * @dev: usb device pointer 295 * @start_address: Device CPU address at which to read 296 * @length: Length of above data 297 * @address_type: Can read both XDATA and I2C 298 * @buffer: pointer to input data buffer 299 */ 300static int read_download_mem(struct usb_device *dev, int start_address, 301 int length, __u8 address_type, __u8 *buffer) 302{ 303 int status = 0; 304 __u8 read_length; 305 __be16 be_start_address; 306 307 dbg("%s - @ %x for %d", __func__, start_address, length); 308 309 /* Read in blocks of 64 bytes 310 * (TI firmware can't handle more than 64 byte reads) 311 */ 312 while (length) { 313 if (length > 64) 314 read_length = 64; 315 else 316 read_length = (__u8)length; 317 318 if (read_length > 1) { 319 dbg("%s - @ %x for %d", __func__, 320 start_address, read_length); 321 } 322 be_start_address = cpu_to_be16(start_address); 323 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 324 (__u16)address_type, 325 (__force __u16)be_start_address, 326 buffer, read_length); 327 328 if (status) { 329 dbg("%s - ERROR %x", __func__, status); 330 return status; 331 } 332 333 if (read_length > 1) 334 usb_serial_debug_data(debug, &dev->dev, __func__, 335 read_length, buffer); 336 337 /* Update pointers/length */ 338 start_address += read_length; 339 buffer += read_length; 340 length -= read_length; 341 } 342 343 return status; 344} 345 346static int read_ram(struct usb_device *dev, int start_address, 347 int length, __u8 *buffer) 348{ 349 return read_download_mem(dev, start_address, length, 350 DTK_ADDR_SPACE_XDATA, buffer); 351} 352 353/* Read edgeport memory to a given block */ 354static int read_boot_mem(struct edgeport_serial *serial, 355 int start_address, int length, __u8 *buffer) 356{ 357 int status = 0; 358 int i; 359 360 for (i = 0; i < length; i++) { 361 status = ti_vread_sync(serial->serial->dev, 362 UMPC_MEMORY_READ, serial->TI_I2C_Type, 363 (__u16)(start_address+i), &buffer[i], 0x01); 364 if (status) { 365 dbg("%s - ERROR %x", __func__, status); 366 return status; 367 } 368 } 369 370 dbg("%s - start_address = %x, length = %d", 371 __func__, start_address, length); 372 usb_serial_debug_data(debug, &serial->serial->dev->dev, 373 __func__, length, buffer); 374 375 serial->TiReadI2C = 1; 376 377 return status; 378} 379 380/* Write given block to TI EPROM memory */ 381static int write_boot_mem(struct edgeport_serial *serial, 382 int start_address, int length, __u8 *buffer) 383{ 384 int status = 0; 385 int i; 386 u8 *temp; 387 388 /* Must do a read before write */ 389 if (!serial->TiReadI2C) { 390 temp = kmalloc(1, GFP_KERNEL); 391 if (!temp) { 392 dev_err(&serial->serial->dev->dev, 393 "%s - out of memory\n", __func__); 394 return -ENOMEM; 395 } 396 status = read_boot_mem(serial, 0, 1, temp); 397 kfree(temp); 398 if (status) 399 return status; 400 } 401 402 for (i = 0; i < length; ++i) { 403 status = ti_vsend_sync(serial->serial->dev, 404 UMPC_MEMORY_WRITE, buffer[i], 405 (__u16)(i + start_address), NULL, 0); 406 if (status) 407 return status; 408 } 409 410 dbg("%s - start_sddr = %x, length = %d", 411 __func__, start_address, length); 412 usb_serial_debug_data(debug, &serial->serial->dev->dev, 413 __func__, length, buffer); 414 415 return status; 416} 417 418 419/* Write edgeport I2C memory to TI chip */ 420static int write_i2c_mem(struct edgeport_serial *serial, 421 int start_address, int length, __u8 address_type, __u8 *buffer) 422{ 423 int status = 0; 424 int write_length; 425 __be16 be_start_address; 426 427 /* We can only send a maximum of 1 aligned byte page at a time */ 428 429 /* calculate the number of bytes left in the first page */ 430 write_length = EPROM_PAGE_SIZE - 431 (start_address & (EPROM_PAGE_SIZE - 1)); 432 433 if (write_length > length) 434 write_length = length; 435 436 dbg("%s - BytesInFirstPage Addr = %x, length = %d", 437 __func__, start_address, write_length); 438 usb_serial_debug_data(debug, &serial->serial->dev->dev, 439 __func__, write_length, buffer); 440 441 /* Write first page */ 442 be_start_address = cpu_to_be16(start_address); 443 status = ti_vsend_sync(serial->serial->dev, 444 UMPC_MEMORY_WRITE, (__u16)address_type, 445 (__force __u16)be_start_address, 446 buffer, write_length); 447 if (status) { 448 dbg("%s - ERROR %d", __func__, status); 449 return status; 450 } 451 452 length -= write_length; 453 start_address += write_length; 454 buffer += write_length; 455 456 /* We should be aligned now -- can write 457 max page size bytes at a time */ 458 while (length) { 459 if (length > EPROM_PAGE_SIZE) 460 write_length = EPROM_PAGE_SIZE; 461 else 462 write_length = length; 463 464 dbg("%s - Page Write Addr = %x, length = %d", 465 __func__, start_address, write_length); 466 usb_serial_debug_data(debug, &serial->serial->dev->dev, 467 __func__, write_length, buffer); 468 469 /* Write next page */ 470 be_start_address = cpu_to_be16(start_address); 471 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 472 (__u16)address_type, 473 (__force __u16)be_start_address, 474 buffer, write_length); 475 if (status) { 476 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", 477 __func__, status); 478 return status; 479 } 480 481 length -= write_length; 482 start_address += write_length; 483 buffer += write_length; 484 } 485 return status; 486} 487 488/* Examine the UMP DMA registers and LSR 489 * 490 * Check the MSBit of the X and Y DMA byte count registers. 491 * A zero in this bit indicates that the TX DMA buffers are empty 492 * then check the TX Empty bit in the UART. 493 */ 494static int tx_active(struct edgeport_port *port) 495{ 496 int status; 497 struct out_endpoint_desc_block *oedb; 498 __u8 *lsr; 499 int bytes_left = 0; 500 501 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 502 if (!oedb) { 503 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 504 return -ENOMEM; 505 } 506 507 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 508 as not all platforms can do DMA 509 from stack */ 510 if (!lsr) { 511 kfree(oedb); 512 return -ENOMEM; 513 } 514 /* Read the DMA Count Registers */ 515 status = read_ram(port->port->serial->dev, port->dma_address, 516 sizeof(*oedb), (void *)oedb); 517 if (status) 518 goto exit_is_tx_active; 519 520 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); 521 522 /* and the LSR */ 523 status = read_ram(port->port->serial->dev, 524 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 525 526 if (status) 527 goto exit_is_tx_active; 528 dbg("%s - LSR = 0x%X", __func__, *lsr); 529 530 /* If either buffer has data or we are transmitting then return TRUE */ 531 if ((oedb->XByteCount & 0x80) != 0) 532 bytes_left += 64; 533 534 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 535 bytes_left += 1; 536 537 /* We return Not Active if we get any kind of error */ 538exit_is_tx_active: 539 dbg("%s - return %d", __func__, bytes_left); 540 541 kfree(lsr); 542 kfree(oedb); 543 return bytes_left; 544} 545 546static void chase_port(struct edgeport_port *port, unsigned long timeout, 547 int flush) 548{ 549 int baud_rate; 550 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 551 wait_queue_t wait; 552 unsigned long flags; 553 554 if (!timeout) 555 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 556 557 /* wait for data to drain from the buffer */ 558 spin_lock_irqsave(&port->ep_lock, flags); 559 init_waitqueue_entry(&wait, current); 560 add_wait_queue(&tty->write_wait, &wait); 561 for (;;) { 562 set_current_state(TASK_INTERRUPTIBLE); 563 if (kfifo_len(&port->write_fifo) == 0 564 || timeout == 0 || signal_pending(current) 565 || !usb_get_intfdata(port->port->serial->interface)) 566 /* disconnect */ 567 break; 568 spin_unlock_irqrestore(&port->ep_lock, flags); 569 timeout = schedule_timeout(timeout); 570 spin_lock_irqsave(&port->ep_lock, flags); 571 } 572 set_current_state(TASK_RUNNING); 573 remove_wait_queue(&tty->write_wait, &wait); 574 if (flush) 575 kfifo_reset_out(&port->write_fifo); 576 spin_unlock_irqrestore(&port->ep_lock, flags); 577 tty_kref_put(tty); 578 579 /* wait for data to drain from the device */ 580 timeout += jiffies; 581 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 582 && usb_get_intfdata(port->port->serial->interface)) { 583 /* not disconnected */ 584 if (!tx_active(port)) 585 break; 586 msleep(10); 587 } 588 589 /* disconnected */ 590 if (!usb_get_intfdata(port->port->serial->interface)) 591 return; 592 593 /* wait one more character time, based on baud rate */ 594 /* (tx_active doesn't seem to wait for the last byte) */ 595 baud_rate = port->baud_rate; 596 if (baud_rate == 0) 597 baud_rate = 50; 598 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 599} 600 601static int choose_config(struct usb_device *dev) 602{ 603 /* 604 * There may be multiple configurations on this device, in which case 605 * we would need to read and parse all of them to find out which one 606 * we want. However, we just support one config at this point, 607 * configuration # 1, which is Config Descriptor 0. 608 */ 609 610 dbg("%s - Number of Interfaces = %d", 611 __func__, dev->config->desc.bNumInterfaces); 612 dbg("%s - MAX Power = %d", 613 __func__, dev->config->desc.bMaxPower * 2); 614 615 if (dev->config->desc.bNumInterfaces != 1) { 616 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", 617 __func__); 618 return -ENODEV; 619 } 620 621 return 0; 622} 623 624static int read_rom(struct edgeport_serial *serial, 625 int start_address, int length, __u8 *buffer) 626{ 627 int status; 628 629 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 630 status = read_download_mem(serial->serial->dev, 631 start_address, 632 length, 633 serial->TI_I2C_Type, 634 buffer); 635 } else { 636 status = read_boot_mem(serial, start_address, length, 637 buffer); 638 } 639 return status; 640} 641 642static int write_rom(struct edgeport_serial *serial, int start_address, 643 int length, __u8 *buffer) 644{ 645 if (serial->product_info.TiMode == TI_MODE_BOOT) 646 return write_boot_mem(serial, start_address, length, 647 buffer); 648 649 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 650 return write_i2c_mem(serial, start_address, length, 651 serial->TI_I2C_Type, buffer); 652 return -EINVAL; 653} 654 655 656 657/* Read a descriptor header from I2C based on type */ 658static int get_descriptor_addr(struct edgeport_serial *serial, 659 int desc_type, struct ti_i2c_desc *rom_desc) 660{ 661 int start_address; 662 int status; 663 664 /* Search for requested descriptor in I2C */ 665 start_address = 2; 666 do { 667 status = read_rom(serial, 668 start_address, 669 sizeof(struct ti_i2c_desc), 670 (__u8 *)rom_desc); 671 if (status) 672 return 0; 673 674 if (rom_desc->Type == desc_type) 675 return start_address; 676 677 start_address = start_address + sizeof(struct ti_i2c_desc) 678 + rom_desc->Size; 679 680 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 681 682 return 0; 683} 684 685/* Validate descriptor checksum */ 686static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 687{ 688 __u16 i; 689 __u8 cs = 0; 690 691 for (i = 0; i < rom_desc->Size; i++) 692 cs = (__u8)(cs + buffer[i]); 693 694 if (cs != rom_desc->CheckSum) { 695 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 696 return -EINVAL; 697 } 698 return 0; 699} 700 701/* Make sure that the I2C image is good */ 702static int check_i2c_image(struct edgeport_serial *serial) 703{ 704 struct device *dev = &serial->serial->dev->dev; 705 int status = 0; 706 struct ti_i2c_desc *rom_desc; 707 int start_address = 2; 708 __u8 *buffer; 709 __u16 ttype; 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 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 717 if (!buffer) { 718 dev_err(dev, "%s - out of memory when allocating buffer\n", 719 __func__); 720 kfree(rom_desc); 721 return -ENOMEM; 722 } 723 724 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 725 status = read_rom(serial, 0, 1, buffer); 726 if (status) 727 goto out; 728 729 if (*buffer != UMP5152 && *buffer != UMP3410) { 730 dev_err(dev, "%s - invalid buffer signature\n", __func__); 731 status = -ENODEV; 732 goto out; 733 } 734 735 do { 736 /* Validate the I2C */ 737 status = read_rom(serial, 738 start_address, 739 sizeof(struct ti_i2c_desc), 740 (__u8 *)rom_desc); 741 if (status) 742 break; 743 744 if ((start_address + sizeof(struct ti_i2c_desc) + 745 rom_desc->Size) > TI_MAX_I2C_SIZE) { 746 status = -ENODEV; 747 dbg("%s - structure too big, erroring out.", __func__); 748 break; 749 } 750 751 dbg("%s Type = 0x%x", __func__, rom_desc->Type); 752 753 /* Skip type 2 record */ 754 ttype = rom_desc->Type & 0x0f; 755 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 756 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 757 /* Read the descriptor data */ 758 status = read_rom(serial, start_address + 759 sizeof(struct ti_i2c_desc), 760 rom_desc->Size, buffer); 761 if (status) 762 break; 763 764 status = valid_csum(rom_desc, buffer); 765 if (status) 766 break; 767 } 768 start_address = start_address + sizeof(struct ti_i2c_desc) + 769 rom_desc->Size; 770 771 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 772 (start_address < TI_MAX_I2C_SIZE)); 773 774 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 775 (start_address > TI_MAX_I2C_SIZE)) 776 status = -ENODEV; 777 778out: 779 kfree(buffer); 780 kfree(rom_desc); 781 return status; 782} 783 784static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 785{ 786 int status; 787 int start_address; 788 struct ti_i2c_desc *rom_desc; 789 struct edge_ti_manuf_descriptor *desc; 790 791 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 792 if (!rom_desc) { 793 dev_err(&serial->serial->dev->dev, "%s - out of memory\n", 794 __func__); 795 return -ENOMEM; 796 } 797 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 798 rom_desc); 799 800 if (!start_address) { 801 dbg("%s - Edge Descriptor not found in I2C", __func__); 802 status = -ENODEV; 803 goto exit; 804 } 805 806 /* Read the descriptor data */ 807 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 808 rom_desc->Size, buffer); 809 if (status) 810 goto exit; 811 812 status = valid_csum(rom_desc, buffer); 813 814 desc = (struct edge_ti_manuf_descriptor *)buffer; 815 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); 816 dbg("%s - Version %d", __func__, desc->Version); 817 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); 818 dbg("%s - NumPorts %d", __func__, desc->NumPorts); 819 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); 820 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); 821 822exit: 823 kfree(rom_desc); 824 return status; 825} 826 827/* Build firmware header used for firmware update */ 828static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 829{ 830 __u8 *buffer; 831 int buffer_size; 832 int i; 833 int err; 834 __u8 cs = 0; 835 struct ti_i2c_desc *i2c_header; 836 struct ti_i2c_image_header *img_header; 837 struct ti_i2c_firmware_rec *firmware_rec; 838 const struct firmware *fw; 839 const char *fw_name = "edgeport/down3.bin"; 840 841 /* In order to update the I2C firmware we must change the type 2 record 842 * to type 0xF2. This will force the UMP to come up in Boot Mode. 843 * Then while in boot mode, the driver will download the latest 844 * firmware (padded to 15.5k) into the UMP ram. And finally when the 845 * device comes back up in download mode the driver will cause the new 846 * firmware to be copied from the UMP Ram to I2C and the firmware will 847 * update the record type from 0xf2 to 0x02. 848 */ 849 850 /* Allocate a 15.5k buffer + 2 bytes for version number 851 * (Firmware Record) */ 852 buffer_size = (((1024 * 16) - 512 ) + 853 sizeof(struct ti_i2c_firmware_rec)); 854 855 buffer = kmalloc(buffer_size, GFP_KERNEL); 856 if (!buffer) { 857 dev_err(dev, "%s - out of memory\n", __func__); 858 return -ENOMEM; 859 } 860 861 // Set entire image of 0xffs 862 memset(buffer, 0xff, buffer_size); 863 864 err = request_firmware(&fw, fw_name, dev); 865 if (err) { 866 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 867 fw_name, err); 868 kfree(buffer); 869 return err; 870 } 871 872 /* Save Download Version Number */ 873 OperationalMajorVersion = fw->data[0]; 874 OperationalMinorVersion = fw->data[1]; 875 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 876 877 /* Copy version number into firmware record */ 878 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 879 880 firmware_rec->Ver_Major = OperationalMajorVersion; 881 firmware_rec->Ver_Minor = OperationalMinorVersion; 882 883 /* Pointer to fw_down memory image */ 884 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 885 886 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 887 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 888 le16_to_cpu(img_header->Length)); 889 890 release_firmware(fw); 891 892 for (i=0; i < buffer_size; i++) { 893 cs = (__u8)(cs + buffer[i]); 894 } 895 896 kfree(buffer); 897 898 /* Build new header */ 899 i2c_header = (struct ti_i2c_desc *)header; 900 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 901 902 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 903 i2c_header->Size = (__u16)buffer_size; 904 i2c_header->CheckSum = cs; 905 firmware_rec->Ver_Major = OperationalMajorVersion; 906 firmware_rec->Ver_Minor = OperationalMinorVersion; 907 908 return 0; 909} 910 911/* Try to figure out what type of I2c we have */ 912static int i2c_type_bootmode(struct edgeport_serial *serial) 913{ 914 int status; 915 u8 *data; 916 917 data = kmalloc(1, GFP_KERNEL); 918 if (!data) { 919 dev_err(&serial->serial->dev->dev, 920 "%s - out of memory\n", __func__); 921 return -ENOMEM; 922 } 923 924 /* Try to read type 2 */ 925 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 926 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 927 if (status) 928 dbg("%s - read 2 status error = %d", __func__, status); 929 else 930 dbg("%s - read 2 data = 0x%x", __func__, *data); 931 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 932 dbg("%s - ROM_TYPE_II", __func__); 933 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 934 goto out; 935 } 936 937 /* Try to read type 3 */ 938 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 939 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 940 if (status) 941 dbg("%s - read 3 status error = %d", __func__, status); 942 else 943 dbg("%s - read 2 data = 0x%x", __func__, *data); 944 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 945 dbg("%s - ROM_TYPE_III", __func__); 946 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 947 goto out; 948 } 949 950 dbg("%s - Unknown", __func__); 951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 952 status = -ENODEV; 953out: 954 kfree(data); 955 return status; 956} 957 958static int bulk_xfer(struct usb_serial *serial, void *buffer, 959 int length, int *num_sent) 960{ 961 int status; 962 963 status = usb_bulk_msg(serial->dev, 964 usb_sndbulkpipe(serial->dev, 965 serial->port[0]->bulk_out_endpointAddress), 966 buffer, length, num_sent, 1000); 967 return status; 968} 969 970/* Download given firmware image to the device (IN BOOT MODE) */ 971static int download_code(struct edgeport_serial *serial, __u8 *image, 972 int image_length) 973{ 974 int status = 0; 975 int pos; 976 int transfer; 977 int done; 978 979 /* Transfer firmware image */ 980 for (pos = 0; pos < image_length; ) { 981 /* Read the next buffer from file */ 982 transfer = image_length - pos; 983 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 984 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 985 986 /* Transfer data */ 987 status = bulk_xfer(serial->serial, &image[pos], 988 transfer, &done); 989 if (status) 990 break; 991 /* Advance buffer pointer */ 992 pos += done; 993 } 994 995 return status; 996} 997 998/* FIXME!!! */ 999static int config_boot_dev(struct usb_device *dev) 1000{ 1001 return 0; 1002} 1003 1004static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 1005{ 1006 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 1007} 1008 1009/** 1010 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 1011 * 1012 * This routine downloads the main operating code into the TI5052, using the 1013 * boot code already burned into E2PROM or ROM. 1014 */ 1015static int download_fw(struct edgeport_serial *serial) 1016{ 1017 struct device *dev = &serial->serial->dev->dev; 1018 int status = 0; 1019 int start_address; 1020 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1021 struct usb_interface_descriptor *interface; 1022 int download_cur_ver; 1023 int download_new_ver; 1024 1025 /* This routine is entered by both the BOOT mode and the Download mode 1026 * We can determine which code is running by the reading the config 1027 * descriptor and if we have only one bulk pipe it is in boot mode 1028 */ 1029 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1030 1031 /* Default to type 2 i2c */ 1032 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1033 1034 status = choose_config(serial->serial->dev); 1035 if (status) 1036 return status; 1037 1038 interface = &serial->serial->interface->cur_altsetting->desc; 1039 if (!interface) { 1040 dev_err(dev, "%s - no interface set, error!\n", __func__); 1041 return -ENODEV; 1042 } 1043 1044 /* 1045 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1046 * if we have more than one endpoint we are definitely in download 1047 * mode 1048 */ 1049 if (interface->bNumEndpoints > 1) 1050 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1051 else 1052 /* Otherwise we will remain in configuring mode */ 1053 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1054 1055 /********************************************************************/ 1056 /* Download Mode */ 1057 /********************************************************************/ 1058 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1059 struct ti_i2c_desc *rom_desc; 1060 1061 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); 1062 1063 status = check_i2c_image(serial); 1064 if (status) { 1065 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); 1066 return status; 1067 } 1068 1069 /* Validate Hardware version number 1070 * Read Manufacturing Descriptor from TI Based Edgeport 1071 */ 1072 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1073 if (!ti_manuf_desc) { 1074 dev_err(dev, "%s - out of memory.\n", __func__); 1075 return -ENOMEM; 1076 } 1077 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1078 if (status) { 1079 kfree(ti_manuf_desc); 1080 return status; 1081 } 1082 1083 /* Check version number of ION descriptor */ 1084 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1085 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1086 __func__, ti_cpu_rev(ti_manuf_desc)); 1087 kfree(ti_manuf_desc); 1088 return -EINVAL; 1089 } 1090 1091 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1092 if (!rom_desc) { 1093 dev_err(dev, "%s - out of memory.\n", __func__); 1094 kfree(ti_manuf_desc); 1095 return -ENOMEM; 1096 } 1097 1098 /* Search for type 2 record (firmware record) */ 1099 start_address = get_descriptor_addr(serial, 1100 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1101 if (start_address != 0) { 1102 struct ti_i2c_firmware_rec *firmware_version; 1103 u8 *record; 1104 1105 dbg("%s - Found Type FIRMWARE (Type 2) record", 1106 __func__); 1107 1108 firmware_version = kmalloc(sizeof(*firmware_version), 1109 GFP_KERNEL); 1110 if (!firmware_version) { 1111 dev_err(dev, "%s - out of memory.\n", __func__); 1112 kfree(rom_desc); 1113 kfree(ti_manuf_desc); 1114 return -ENOMEM; 1115 } 1116 1117 /* Validate version number 1118 * Read the descriptor data 1119 */ 1120 status = read_rom(serial, start_address + 1121 sizeof(struct ti_i2c_desc), 1122 sizeof(struct ti_i2c_firmware_rec), 1123 (__u8 *)firmware_version); 1124 if (status) { 1125 kfree(firmware_version); 1126 kfree(rom_desc); 1127 kfree(ti_manuf_desc); 1128 return status; 1129 } 1130 1131 /* Check version number of download with current 1132 version in I2c */ 1133 download_cur_ver = (firmware_version->Ver_Major << 8) + 1134 (firmware_version->Ver_Minor); 1135 download_new_ver = (OperationalMajorVersion << 8) + 1136 (OperationalMinorVersion); 1137 1138 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", 1139 __func__, 1140 firmware_version->Ver_Major, 1141 firmware_version->Ver_Minor, 1142 OperationalMajorVersion, 1143 OperationalMinorVersion); 1144 1145 /* Check if we have an old version in the I2C and 1146 update if necessary */ 1147 if (download_cur_ver < download_new_ver) { 1148 dbg("%s - Update I2C dld from %d.%d to %d.%d", 1149 __func__, 1150 firmware_version->Ver_Major, 1151 firmware_version->Ver_Minor, 1152 OperationalMajorVersion, 1153 OperationalMinorVersion); 1154 1155 record = kmalloc(1, GFP_KERNEL); 1156 if (!record) { 1157 dev_err(dev, "%s - out of memory.\n", 1158 __func__); 1159 kfree(firmware_version); 1160 kfree(rom_desc); 1161 kfree(ti_manuf_desc); 1162 return -ENOMEM; 1163 } 1164 /* In order to update the I2C firmware we must 1165 * change the type 2 record to type 0xF2. This 1166 * will force the UMP to come up in Boot Mode. 1167 * Then while in boot mode, the driver will 1168 * download the latest firmware (padded to 1169 * 15.5k) into the UMP ram. Finally when the 1170 * device comes back up in download mode the 1171 * driver will cause the new firmware to be 1172 * copied from the UMP Ram to I2C and the 1173 * firmware will update the record type from 1174 * 0xf2 to 0x02. 1175 */ 1176 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1177 1178 /* Change the I2C Firmware record type to 1179 0xf2 to trigger an update */ 1180 status = write_rom(serial, start_address, 1181 sizeof(*record), record); 1182 if (status) { 1183 kfree(record); 1184 kfree(firmware_version); 1185 kfree(rom_desc); 1186 kfree(ti_manuf_desc); 1187 return status; 1188 } 1189 1190 /* verify the write -- must do this in order 1191 * for write to complete before we do the 1192 * hardware reset 1193 */ 1194 status = read_rom(serial, 1195 start_address, 1196 sizeof(*record), 1197 record); 1198 if (status) { 1199 kfree(record); 1200 kfree(firmware_version); 1201 kfree(rom_desc); 1202 kfree(ti_manuf_desc); 1203 return status; 1204 } 1205 1206 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1207 dev_err(dev, 1208 "%s - error resetting device\n", 1209 __func__); 1210 kfree(record); 1211 kfree(firmware_version); 1212 kfree(rom_desc); 1213 kfree(ti_manuf_desc); 1214 return -ENODEV; 1215 } 1216 1217 dbg("%s - HARDWARE RESET", __func__); 1218 1219 /* Reset UMP -- Back to BOOT MODE */ 1220 status = ti_vsend_sync(serial->serial->dev, 1221 UMPC_HARDWARE_RESET, 1222 0, 0, NULL, 0); 1223 1224 dbg("%s - HARDWARE RESET return %d", 1225 __func__, status); 1226 1227 /* return an error on purpose. */ 1228 kfree(record); 1229 kfree(firmware_version); 1230 kfree(rom_desc); 1231 kfree(ti_manuf_desc); 1232 return -ENODEV; 1233 } 1234 kfree(firmware_version); 1235 } 1236 /* Search for type 0xF2 record (firmware blank record) */ 1237 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1238#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1239 sizeof(struct ti_i2c_firmware_rec)) 1240 __u8 *header; 1241 __u8 *vheader; 1242 1243 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1244 if (!header) { 1245 dev_err(dev, "%s - out of memory.\n", __func__); 1246 kfree(rom_desc); 1247 kfree(ti_manuf_desc); 1248 return -ENOMEM; 1249 } 1250 1251 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1252 if (!vheader) { 1253 dev_err(dev, "%s - out of memory.\n", __func__); 1254 kfree(header); 1255 kfree(rom_desc); 1256 kfree(ti_manuf_desc); 1257 return -ENOMEM; 1258 } 1259 1260 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", 1261 __func__); 1262 1263 /* 1264 * In order to update the I2C firmware we must change 1265 * the type 2 record to type 0xF2. This will force the 1266 * UMP to come up in Boot Mode. Then while in boot 1267 * mode, the driver will download the latest firmware 1268 * (padded to 15.5k) into the UMP ram. Finally when the 1269 * device comes back up in download mode the driver 1270 * will cause the new firmware to be copied from the 1271 * UMP Ram to I2C and the firmware will update the 1272 * record type from 0xf2 to 0x02. 1273 */ 1274 status = build_i2c_fw_hdr(header, dev); 1275 if (status) { 1276 kfree(vheader); 1277 kfree(header); 1278 kfree(rom_desc); 1279 kfree(ti_manuf_desc); 1280 return -EINVAL; 1281 } 1282 1283 /* Update I2C with type 0xf2 record with correct 1284 size and checksum */ 1285 status = write_rom(serial, 1286 start_address, 1287 HEADER_SIZE, 1288 header); 1289 if (status) { 1290 kfree(vheader); 1291 kfree(header); 1292 kfree(rom_desc); 1293 kfree(ti_manuf_desc); 1294 return -EINVAL; 1295 } 1296 1297 /* verify the write -- must do this in order for 1298 write to complete before we do the hardware reset */ 1299 status = read_rom(serial, start_address, 1300 HEADER_SIZE, vheader); 1301 1302 if (status) { 1303 dbg("%s - can't read header back", __func__); 1304 kfree(vheader); 1305 kfree(header); 1306 kfree(rom_desc); 1307 kfree(ti_manuf_desc); 1308 return status; 1309 } 1310 if (memcmp(vheader, header, HEADER_SIZE)) { 1311 dbg("%s - write download record failed", 1312 __func__); 1313 kfree(vheader); 1314 kfree(header); 1315 kfree(rom_desc); 1316 kfree(ti_manuf_desc); 1317 return -EINVAL; 1318 } 1319 1320 kfree(vheader); 1321 kfree(header); 1322 1323 dbg("%s - Start firmware update", __func__); 1324 1325 /* Tell firmware to copy download image into I2C */ 1326 status = ti_vsend_sync(serial->serial->dev, 1327 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1328 1329 dbg("%s - Update complete 0x%x", __func__, status); 1330 if (status) { 1331 dev_err(dev, 1332 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1333 __func__); 1334 kfree(rom_desc); 1335 kfree(ti_manuf_desc); 1336 return status; 1337 } 1338 } 1339 1340 // The device is running the download code 1341 kfree(rom_desc); 1342 kfree(ti_manuf_desc); 1343 return 0; 1344 } 1345 1346 /********************************************************************/ 1347 /* Boot Mode */ 1348 /********************************************************************/ 1349 dbg("%s - RUNNING IN BOOT MODE", __func__); 1350 1351 /* Configure the TI device so we can use the BULK pipes for download */ 1352 status = config_boot_dev(serial->serial->dev); 1353 if (status) 1354 return status; 1355 1356 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1357 != USB_VENDOR_ID_ION) { 1358 dbg("%s - VID = 0x%x", __func__, 1359 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1360 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1361 goto stayinbootmode; 1362 } 1363 1364 /* We have an ION device (I2c Must be programmed) 1365 Determine I2C image type */ 1366 if (i2c_type_bootmode(serial)) 1367 goto stayinbootmode; 1368 1369 /* Check for ION Vendor ID and that the I2C is valid */ 1370 if (!check_i2c_image(serial)) { 1371 struct ti_i2c_image_header *header; 1372 int i; 1373 __u8 cs = 0; 1374 __u8 *buffer; 1375 int buffer_size; 1376 int err; 1377 const struct firmware *fw; 1378 const char *fw_name = "edgeport/down3.bin"; 1379 1380 /* Validate Hardware version number 1381 * Read Manufacturing Descriptor from TI Based Edgeport 1382 */ 1383 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1384 if (!ti_manuf_desc) { 1385 dev_err(dev, "%s - out of memory.\n", __func__); 1386 return -ENOMEM; 1387 } 1388 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1389 if (status) { 1390 kfree(ti_manuf_desc); 1391 goto stayinbootmode; 1392 } 1393 1394 /* Check for version 2 */ 1395 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1396 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1397 __func__, ti_cpu_rev(ti_manuf_desc)); 1398 kfree(ti_manuf_desc); 1399 goto stayinbootmode; 1400 } 1401 1402 kfree(ti_manuf_desc); 1403 1404 /* 1405 * In order to update the I2C firmware we must change the type 1406 * 2 record to type 0xF2. This will force the UMP to come up 1407 * in Boot Mode. Then while in boot mode, the driver will 1408 * download the latest firmware (padded to 15.5k) into the 1409 * UMP ram. Finally when the device comes back up in download 1410 * mode the driver will cause the new firmware to be copied 1411 * from the UMP Ram to I2C and the firmware will update the 1412 * record type from 0xf2 to 0x02. 1413 * 1414 * Do we really have to copy the whole firmware image, 1415 * or could we do this in place! 1416 */ 1417 1418 /* Allocate a 15.5k buffer + 3 byte header */ 1419 buffer_size = (((1024 * 16) - 512) + 1420 sizeof(struct ti_i2c_image_header)); 1421 buffer = kmalloc(buffer_size, GFP_KERNEL); 1422 if (!buffer) { 1423 dev_err(dev, "%s - out of memory\n", __func__); 1424 return -ENOMEM; 1425 } 1426 1427 /* Initialize the buffer to 0xff (pad the buffer) */ 1428 memset(buffer, 0xff, buffer_size); 1429 1430 err = request_firmware(&fw, fw_name, dev); 1431 if (err) { 1432 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 1433 fw_name, err); 1434 kfree(buffer); 1435 return err; 1436 } 1437 memcpy(buffer, &fw->data[4], fw->size - 4); 1438 release_firmware(fw); 1439 1440 for (i = sizeof(struct ti_i2c_image_header); 1441 i < buffer_size; i++) { 1442 cs = (__u8)(cs + buffer[i]); 1443 } 1444 1445 header = (struct ti_i2c_image_header *)buffer; 1446 1447 /* update length and checksum after padding */ 1448 header->Length = cpu_to_le16((__u16)(buffer_size - 1449 sizeof(struct ti_i2c_image_header))); 1450 header->CheckSum = cs; 1451 1452 /* Download the operational code */ 1453 dbg("%s - Downloading operational code image (TI UMP)", 1454 __func__); 1455 status = download_code(serial, buffer, buffer_size); 1456 1457 kfree(buffer); 1458 1459 if (status) { 1460 dbg("%s - Error downloading operational code image", 1461 __func__); 1462 return status; 1463 } 1464 1465 /* Device will reboot */ 1466 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1467 1468 dbg("%s - Download successful -- Device rebooting...", 1469 __func__); 1470 1471 /* return an error on purpose */ 1472 return -ENODEV; 1473 } 1474 1475stayinbootmode: 1476 /* Eprom is invalid or blank stay in boot mode */ 1477 dbg("%s - STAYING IN BOOT MODE", __func__); 1478 serial->product_info.TiMode = TI_MODE_BOOT; 1479 1480 return 0; 1481} 1482 1483 1484static int ti_do_config(struct edgeport_port *port, int feature, int on) 1485{ 1486 int port_number = port->port->number - port->port->serial->minor; 1487 on = !!on; /* 1 or 0 not bitmask */ 1488 return send_cmd(port->port->serial->dev, 1489 feature, (__u8)(UMPM_UART1_PORT + port_number), 1490 on, NULL, 0); 1491} 1492 1493 1494static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1495{ 1496 int status = 0; 1497 1498 dbg("%s - %x", __func__, mcr); 1499 1500 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1501 if (status) 1502 return status; 1503 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1504 if (status) 1505 return status; 1506 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1507} 1508 1509/* Convert TI LSR to standard UART flags */ 1510static __u8 map_line_status(__u8 ti_lsr) 1511{ 1512 __u8 lsr = 0; 1513 1514#define MAP_FLAG(flagUmp, flagUart) \ 1515 if (ti_lsr & flagUmp) \ 1516 lsr |= flagUart; 1517 1518 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1519 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1520 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1521 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1522 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1523 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1524 1525#undef MAP_FLAG 1526 1527 return lsr; 1528} 1529 1530static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1531{ 1532 struct async_icount *icount; 1533 struct tty_struct *tty; 1534 1535 dbg("%s - %02x", __func__, msr); 1536 1537 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1538 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1539 icount = &edge_port->icount; 1540 1541 /* update input line counters */ 1542 if (msr & EDGEPORT_MSR_DELTA_CTS) 1543 icount->cts++; 1544 if (msr & EDGEPORT_MSR_DELTA_DSR) 1545 icount->dsr++; 1546 if (msr & EDGEPORT_MSR_DELTA_CD) 1547 icount->dcd++; 1548 if (msr & EDGEPORT_MSR_DELTA_RI) 1549 icount->rng++; 1550 wake_up_interruptible(&edge_port->delta_msr_wait); 1551 } 1552 1553 /* Save the new modem status */ 1554 edge_port->shadow_msr = msr & 0xf0; 1555 1556 tty = tty_port_tty_get(&edge_port->port->port); 1557 /* handle CTS flow control */ 1558 if (tty && C_CRTSCTS(tty)) { 1559 if (msr & EDGEPORT_MSR_CTS) { 1560 tty->hw_stopped = 0; 1561 tty_wakeup(tty); 1562 } else { 1563 tty->hw_stopped = 1; 1564 } 1565 } 1566 tty_kref_put(tty); 1567} 1568 1569static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1570 __u8 lsr, __u8 data) 1571{ 1572 struct async_icount *icount; 1573 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1574 LSR_FRM_ERR | LSR_BREAK)); 1575 struct tty_struct *tty; 1576 1577 dbg("%s - %02x", __func__, new_lsr); 1578 1579 edge_port->shadow_lsr = lsr; 1580 1581 if (new_lsr & LSR_BREAK) 1582 /* 1583 * Parity and Framing errors only count if they 1584 * occur exclusive of a break being received. 1585 */ 1586 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1587 1588 /* Place LSR data byte into Rx buffer */ 1589 if (lsr_data) { 1590 tty = tty_port_tty_get(&edge_port->port->port); 1591 if (tty) { 1592 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1593 tty_kref_put(tty); 1594 } 1595 } 1596 1597 /* update input line counters */ 1598 icount = &edge_port->icount; 1599 if (new_lsr & LSR_BREAK) 1600 icount->brk++; 1601 if (new_lsr & LSR_OVER_ERR) 1602 icount->overrun++; 1603 if (new_lsr & LSR_PAR_ERR) 1604 icount->parity++; 1605 if (new_lsr & LSR_FRM_ERR) 1606 icount->frame++; 1607} 1608 1609 1610static void edge_interrupt_callback(struct urb *urb) 1611{ 1612 struct edgeport_serial *edge_serial = urb->context; 1613 struct usb_serial_port *port; 1614 struct edgeport_port *edge_port; 1615 unsigned char *data = urb->transfer_buffer; 1616 int length = urb->actual_length; 1617 int port_number; 1618 int function; 1619 int retval; 1620 __u8 lsr; 1621 __u8 msr; 1622 int status = urb->status; 1623 1624 dbg("%s", __func__); 1625 1626 switch (status) { 1627 case 0: 1628 /* success */ 1629 break; 1630 case -ECONNRESET: 1631 case -ENOENT: 1632 case -ESHUTDOWN: 1633 /* this urb is terminated, clean up */ 1634 dbg("%s - urb shutting down with status: %d", 1635 __func__, status); 1636 return; 1637 default: 1638 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1639 "%d\n", __func__, status); 1640 goto exit; 1641 } 1642 1643 if (!length) { 1644 dbg("%s - no data in urb", __func__); 1645 goto exit; 1646 } 1647 1648 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, 1649 __func__, length, data); 1650 1651 if (length != 2) { 1652 dbg("%s - expecting packet of size 2, got %d", 1653 __func__, length); 1654 goto exit; 1655 } 1656 1657 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1658 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1659 dbg("%s - port_number %d, function %d, info 0x%x", 1660 __func__, port_number, function, data[1]); 1661 port = edge_serial->serial->port[port_number]; 1662 edge_port = usb_get_serial_port_data(port); 1663 if (!edge_port) { 1664 dbg("%s - edge_port not found", __func__); 1665 return; 1666 } 1667 switch (function) { 1668 case TIUMP_INTERRUPT_CODE_LSR: 1669 lsr = map_line_status(data[1]); 1670 if (lsr & UMP_UART_LSR_DATA_MASK) { 1671 /* Save the LSR event for bulk read 1672 completion routine */ 1673 dbg("%s - LSR Event Port %u LSR Status = %02x", 1674 __func__, port_number, lsr); 1675 edge_port->lsr_event = 1; 1676 edge_port->lsr_mask = lsr; 1677 } else { 1678 dbg("%s - ===== Port %d LSR Status = %02x ======", 1679 __func__, port_number, lsr); 1680 handle_new_lsr(edge_port, 0, lsr, 0); 1681 } 1682 break; 1683 1684 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1685 /* Copy MSR from UMP */ 1686 msr = data[1]; 1687 dbg("%s - ===== Port %u MSR Status = %02x ======", 1688 __func__, port_number, msr); 1689 handle_new_msr(edge_port, msr); 1690 break; 1691 1692 default: 1693 dev_err(&urb->dev->dev, 1694 "%s - Unknown Interrupt code from UMP %x\n", 1695 __func__, data[1]); 1696 break; 1697 1698 } 1699 1700exit: 1701 retval = usb_submit_urb(urb, GFP_ATOMIC); 1702 if (retval) 1703 dev_err(&urb->dev->dev, 1704 "%s - usb_submit_urb failed with result %d\n", 1705 __func__, retval); 1706} 1707 1708static void edge_bulk_in_callback(struct urb *urb) 1709{ 1710 struct edgeport_port *edge_port = urb->context; 1711 unsigned char *data = urb->transfer_buffer; 1712 struct tty_struct *tty; 1713 int retval = 0; 1714 int port_number; 1715 int status = urb->status; 1716 1717 dbg("%s", __func__); 1718 1719 switch (status) { 1720 case 0: 1721 /* success */ 1722 break; 1723 case -ECONNRESET: 1724 case -ENOENT: 1725 case -ESHUTDOWN: 1726 /* this urb is terminated, clean up */ 1727 dbg("%s - urb shutting down with status: %d", 1728 __func__, status); 1729 return; 1730 default: 1731 dev_err(&urb->dev->dev, 1732 "%s - nonzero read bulk status received: %d\n", 1733 __func__, status); 1734 } 1735 1736 if (status == -EPIPE) 1737 goto exit; 1738 1739 if (status) { 1740 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1741 return; 1742 } 1743 1744 port_number = edge_port->port->number - edge_port->port->serial->minor; 1745 1746 if (edge_port->lsr_event) { 1747 edge_port->lsr_event = 0; 1748 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", 1749 __func__, port_number, edge_port->lsr_mask, *data); 1750 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1751 /* Adjust buffer length/pointer */ 1752 --urb->actual_length; 1753 ++data; 1754 } 1755 1756 tty = tty_port_tty_get(&edge_port->port->port); 1757 if (tty && urb->actual_length) { 1758 usb_serial_debug_data(debug, &edge_port->port->dev, 1759 __func__, urb->actual_length, data); 1760 if (edge_port->close_pending) 1761 dbg("%s - close pending, dropping data on the floor", 1762 __func__); 1763 else 1764 edge_tty_recv(&edge_port->port->dev, tty, data, 1765 urb->actual_length); 1766 edge_port->icount.rx += urb->actual_length; 1767 } 1768 tty_kref_put(tty); 1769 1770exit: 1771 /* continue read unless stopped */ 1772 spin_lock(&edge_port->ep_lock); 1773 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1774 retval = usb_submit_urb(urb, GFP_ATOMIC); 1775 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1776 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1777 1778 spin_unlock(&edge_port->ep_lock); 1779 if (retval) 1780 dev_err(&urb->dev->dev, 1781 "%s - usb_submit_urb failed with result %d\n", 1782 __func__, retval); 1783} 1784 1785static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1786 unsigned char *data, int length) 1787{ 1788 int queued; 1789 1790 queued = tty_insert_flip_string(tty, data, length); 1791 if (queued < length) 1792 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1793 __func__, length - queued); 1794 tty_flip_buffer_push(tty); 1795} 1796 1797static void edge_bulk_out_callback(struct urb *urb) 1798{ 1799 struct usb_serial_port *port = urb->context; 1800 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1801 int status = urb->status; 1802 struct tty_struct *tty; 1803 1804 dbg("%s - port %d", __func__, port->number); 1805 1806 edge_port->ep_write_urb_in_use = 0; 1807 1808 switch (status) { 1809 case 0: 1810 /* success */ 1811 break; 1812 case -ECONNRESET: 1813 case -ENOENT: 1814 case -ESHUTDOWN: 1815 /* this urb is terminated, clean up */ 1816 dbg("%s - urb shutting down with status: %d", 1817 __func__, status); 1818 return; 1819 default: 1820 dev_err(&urb->dev->dev, "%s - nonzero write bulk status " 1821 "received: %d\n", __func__, status); 1822 } 1823 1824 /* send any buffered data */ 1825 tty = tty_port_tty_get(&port->port); 1826 edge_send(tty); 1827 tty_kref_put(tty); 1828} 1829 1830static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1831{ 1832 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1833 struct edgeport_serial *edge_serial; 1834 struct usb_device *dev; 1835 struct urb *urb; 1836 int port_number; 1837 int status; 1838 u16 open_settings; 1839 u8 transaction_timeout; 1840 1841 dbg("%s - port %d", __func__, port->number); 1842 1843 if (edge_port == NULL) 1844 return -ENODEV; 1845 1846 port_number = port->number - port->serial->minor; 1847 switch (port_number) { 1848 case 0: 1849 edge_port->uart_base = UMPMEM_BASE_UART1; 1850 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1851 break; 1852 case 1: 1853 edge_port->uart_base = UMPMEM_BASE_UART2; 1854 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1855 break; 1856 default: 1857 dev_err(&port->dev, "Unknown port number!!!\n"); 1858 return -ENODEV; 1859 } 1860 1861 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", 1862 __func__, port_number, edge_port->uart_base, 1863 edge_port->dma_address); 1864 1865 dev = port->serial->dev; 1866 1867 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1868 init_waitqueue_head(&edge_port->delta_msr_wait); 1869 1870 /* turn off loopback */ 1871 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1872 if (status) { 1873 dev_err(&port->dev, 1874 "%s - cannot send clear loopback command, %d\n", 1875 __func__, status); 1876 return status; 1877 } 1878 1879 /* set up the port settings */ 1880 if (tty) 1881 edge_set_termios(tty, port, tty->termios); 1882 1883 /* open up the port */ 1884 1885 /* milliseconds to timeout for DMA transfer */ 1886 transaction_timeout = 2; 1887 1888 edge_port->ump_read_timeout = 1889 max(20, ((transaction_timeout * 3) / 2)); 1890 1891 /* milliseconds to timeout for DMA transfer */ 1892 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1893 UMP_PIPE_TRANS_TIMEOUT_ENA | 1894 (transaction_timeout << 2)); 1895 1896 dbg("%s - Sending UMPC_OPEN_PORT", __func__); 1897 1898 /* Tell TI to open and start the port */ 1899 status = send_cmd(dev, UMPC_OPEN_PORT, 1900 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1901 if (status) { 1902 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1903 __func__, status); 1904 return status; 1905 } 1906 1907 /* Start the DMA? */ 1908 status = send_cmd(dev, UMPC_START_PORT, 1909 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1910 if (status) { 1911 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1912 __func__, status); 1913 return status; 1914 } 1915 1916 /* Clear TX and RX buffers in UMP */ 1917 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1918 if (status) { 1919 dev_err(&port->dev, 1920 "%s - cannot send clear buffers command, %d\n", 1921 __func__, status); 1922 return status; 1923 } 1924 1925 /* Read Initial MSR */ 1926 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1927 (__u16)(UMPM_UART1_PORT + port_number), 1928 &edge_port->shadow_msr, 1); 1929 if (status) { 1930 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1931 __func__, status); 1932 return status; 1933 } 1934 1935 dbg("ShadowMSR 0x%X", edge_port->shadow_msr); 1936 1937 /* Set Initial MCR */ 1938 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1939 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); 1940 1941 edge_serial = edge_port->edge_serial; 1942 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1943 return -ERESTARTSYS; 1944 if (edge_serial->num_ports_open == 0) { 1945 /* we are the first port to open, post the interrupt urb */ 1946 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1947 if (!urb) { 1948 dev_err(&port->dev, 1949 "%s - no interrupt urb present, exiting\n", 1950 __func__); 1951 status = -EINVAL; 1952 goto release_es_lock; 1953 } 1954 urb->context = edge_serial; 1955 status = usb_submit_urb(urb, GFP_KERNEL); 1956 if (status) { 1957 dev_err(&port->dev, 1958 "%s - usb_submit_urb failed with value %d\n", 1959 __func__, status); 1960 goto release_es_lock; 1961 } 1962 } 1963 1964 /* 1965 * reset the data toggle on the bulk endpoints to work around bug in 1966 * host controllers where things get out of sync some times 1967 */ 1968 usb_clear_halt(dev, port->write_urb->pipe); 1969 usb_clear_halt(dev, port->read_urb->pipe); 1970 1971 /* start up our bulk read urb */ 1972 urb = port->read_urb; 1973 if (!urb) { 1974 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1975 __func__); 1976 status = -EINVAL; 1977 goto unlink_int_urb; 1978 } 1979 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1980 urb->context = edge_port; 1981 status = usb_submit_urb(urb, GFP_KERNEL); 1982 if (status) { 1983 dev_err(&port->dev, 1984 "%s - read bulk usb_submit_urb failed with value %d\n", 1985 __func__, status); 1986 goto unlink_int_urb; 1987 } 1988 1989 ++edge_serial->num_ports_open; 1990 1991 dbg("%s - exited", __func__); 1992 1993 goto release_es_lock; 1994 1995unlink_int_urb: 1996 if (edge_port->edge_serial->num_ports_open == 0) 1997 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1998release_es_lock: 1999 mutex_unlock(&edge_serial->es_lock); 2000 return status; 2001} 2002 2003static void edge_close(struct usb_serial_port *port) 2004{ 2005 struct edgeport_serial *edge_serial; 2006 struct edgeport_port *edge_port; 2007 int port_number; 2008 int status; 2009 2010 dbg("%s - port %d", __func__, port->number); 2011 2012 edge_serial = usb_get_serial_data(port->serial); 2013 edge_port = usb_get_serial_port_data(port); 2014 if (edge_serial == NULL || edge_port == NULL) 2015 return; 2016 2017 /* The bulkreadcompletion routine will check 2018 * this flag and dump add read data */ 2019 edge_port->close_pending = 1; 2020 2021 /* chase the port close and flush */ 2022 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 2023 2024 usb_kill_urb(port->read_urb); 2025 usb_kill_urb(port->write_urb); 2026 edge_port->ep_write_urb_in_use = 0; 2027 2028 /* assuming we can still talk to the device, 2029 * send a close port command to it */ 2030 dbg("%s - send umpc_close_port", __func__); 2031 port_number = port->number - port->serial->minor; 2032 status = send_cmd(port->serial->dev, 2033 UMPC_CLOSE_PORT, 2034 (__u8)(UMPM_UART1_PORT + port_number), 2035 0, 2036 NULL, 2037 0); 2038 mutex_lock(&edge_serial->es_lock); 2039 --edge_port->edge_serial->num_ports_open; 2040 if (edge_port->edge_serial->num_ports_open <= 0) { 2041 /* last port is now closed, let's shut down our interrupt urb */ 2042 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2043 edge_port->edge_serial->num_ports_open = 0; 2044 } 2045 mutex_unlock(&edge_serial->es_lock); 2046 edge_port->close_pending = 0; 2047 2048 dbg("%s - exited", __func__); 2049} 2050 2051static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2052 const unsigned char *data, int count) 2053{ 2054 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2055 2056 dbg("%s - port %d", __func__, port->number); 2057 2058 if (count == 0) { 2059 dbg("%s - write request of 0 bytes", __func__); 2060 return 0; 2061 } 2062 2063 if (edge_port == NULL) 2064 return -ENODEV; 2065 if (edge_port->close_pending == 1) 2066 return -ENODEV; 2067 2068 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2069 &edge_port->ep_lock); 2070 edge_send(tty); 2071 2072 return count; 2073} 2074 2075static void edge_send(struct tty_struct *tty) 2076{ 2077 struct usb_serial_port *port = tty->driver_data; 2078 int count, result; 2079 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2080 unsigned long flags; 2081 2082 2083 dbg("%s - port %d", __func__, port->number); 2084 2085 spin_lock_irqsave(&edge_port->ep_lock, flags); 2086 2087 if (edge_port->ep_write_urb_in_use) { 2088 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2089 return; 2090 } 2091 2092 count = kfifo_out(&edge_port->write_fifo, 2093 port->write_urb->transfer_buffer, 2094 port->bulk_out_size); 2095 2096 if (count == 0) { 2097 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2098 return; 2099 } 2100 2101 edge_port->ep_write_urb_in_use = 1; 2102 2103 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2104 2105 usb_serial_debug_data(debug, &port->dev, __func__, count, 2106 port->write_urb->transfer_buffer); 2107 2108 /* set up our urb */ 2109 port->write_urb->transfer_buffer_length = count; 2110 2111 /* send the data out the bulk port */ 2112 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2113 if (result) { 2114 dev_err(&port->dev, 2115 "%s - failed submitting write urb, error %d\n", 2116 __func__, result); 2117 edge_port->ep_write_urb_in_use = 0; 2118 /* TODO: reschedule edge_send */ 2119 } else 2120 edge_port->icount.tx += count; 2121 2122 /* wakeup any process waiting for writes to complete */ 2123 /* there is now more room in the buffer for new writes */ 2124 if (tty) 2125 tty_wakeup(tty); 2126} 2127 2128static int edge_write_room(struct tty_struct *tty) 2129{ 2130 struct usb_serial_port *port = tty->driver_data; 2131 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2132 int room = 0; 2133 unsigned long flags; 2134 2135 dbg("%s - port %d", __func__, port->number); 2136 2137 if (edge_port == NULL) 2138 return 0; 2139 if (edge_port->close_pending == 1) 2140 return 0; 2141 2142 spin_lock_irqsave(&edge_port->ep_lock, flags); 2143 room = kfifo_avail(&edge_port->write_fifo); 2144 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2145 2146 dbg("%s - returns %d", __func__, room); 2147 return room; 2148} 2149 2150static int edge_chars_in_buffer(struct tty_struct *tty) 2151{ 2152 struct usb_serial_port *port = tty->driver_data; 2153 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2154 int chars = 0; 2155 unsigned long flags; 2156 2157 dbg("%s - port %d", __func__, port->number); 2158 2159 if (edge_port == NULL) 2160 return 0; 2161 if (edge_port->close_pending == 1) 2162 return 0; 2163 2164 spin_lock_irqsave(&edge_port->ep_lock, flags); 2165 chars = kfifo_len(&edge_port->write_fifo); 2166 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2167 2168 dbg("%s - returns %d", __func__, chars); 2169 return chars; 2170} 2171 2172static void edge_throttle(struct tty_struct *tty) 2173{ 2174 struct usb_serial_port *port = tty->driver_data; 2175 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2176 int status; 2177 2178 dbg("%s - port %d", __func__, port->number); 2179 2180 if (edge_port == NULL) 2181 return; 2182 2183 /* if we are implementing XON/XOFF, send the stop character */ 2184 if (I_IXOFF(tty)) { 2185 unsigned char stop_char = STOP_CHAR(tty); 2186 status = edge_write(tty, port, &stop_char, 1); 2187 if (status <= 0) { 2188 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2189 } 2190 } 2191 2192 /* if we are implementing RTS/CTS, stop reads */ 2193 /* and the Edgeport will clear the RTS line */ 2194 if (C_CRTSCTS(tty)) 2195 stop_read(edge_port); 2196 2197} 2198 2199static void edge_unthrottle(struct tty_struct *tty) 2200{ 2201 struct usb_serial_port *port = tty->driver_data; 2202 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2203 int status; 2204 2205 dbg("%s - port %d", __func__, port->number); 2206 2207 if (edge_port == NULL) 2208 return; 2209 2210 /* if we are implementing XON/XOFF, send the start character */ 2211 if (I_IXOFF(tty)) { 2212 unsigned char start_char = START_CHAR(tty); 2213 status = edge_write(tty, port, &start_char, 1); 2214 if (status <= 0) { 2215 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2216 } 2217 } 2218 /* if we are implementing RTS/CTS, restart reads */ 2219 /* are the Edgeport will assert the RTS line */ 2220 if (C_CRTSCTS(tty)) { 2221 status = restart_read(edge_port); 2222 if (status) 2223 dev_err(&port->dev, 2224 "%s - read bulk usb_submit_urb failed: %d\n", 2225 __func__, status); 2226 } 2227 2228} 2229 2230static void stop_read(struct edgeport_port *edge_port) 2231{ 2232 unsigned long flags; 2233 2234 spin_lock_irqsave(&edge_port->ep_lock, flags); 2235 2236 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2237 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2238 edge_port->shadow_mcr &= ~MCR_RTS; 2239 2240 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2241} 2242 2243static int restart_read(struct edgeport_port *edge_port) 2244{ 2245 struct urb *urb; 2246 int status = 0; 2247 unsigned long flags; 2248 2249 spin_lock_irqsave(&edge_port->ep_lock, flags); 2250 2251 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2252 urb = edge_port->port->read_urb; 2253 status = usb_submit_urb(urb, GFP_ATOMIC); 2254 } 2255 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2256 edge_port->shadow_mcr |= MCR_RTS; 2257 2258 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2259 2260 return status; 2261} 2262 2263static void change_port_settings(struct tty_struct *tty, 2264 struct edgeport_port *edge_port, struct ktermios *old_termios) 2265{ 2266 struct ump_uart_config *config; 2267 int baud; 2268 unsigned cflag; 2269 int status; 2270 int port_number = edge_port->port->number - 2271 edge_port->port->serial->minor; 2272 2273 dbg("%s - port %d", __func__, edge_port->port->number); 2274 2275 config = kmalloc (sizeof (*config), GFP_KERNEL); 2276 if (!config) { 2277 *tty->termios = *old_termios; 2278 dev_err(&edge_port->port->dev, "%s - out of memory\n", 2279 __func__); 2280 return; 2281 } 2282 2283 cflag = tty->termios->c_cflag; 2284 2285 config->wFlags = 0; 2286 2287 /* These flags must be set */ 2288 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2289 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2290 config->bUartMode = (__u8)(edge_port->bUartMode); 2291 2292 switch (cflag & CSIZE) { 2293 case CS5: 2294 config->bDataBits = UMP_UART_CHAR5BITS; 2295 dbg("%s - data bits = 5", __func__); 2296 break; 2297 case CS6: 2298 config->bDataBits = UMP_UART_CHAR6BITS; 2299 dbg("%s - data bits = 6", __func__); 2300 break; 2301 case CS7: 2302 config->bDataBits = UMP_UART_CHAR7BITS; 2303 dbg("%s - data bits = 7", __func__); 2304 break; 2305 default: 2306 case CS8: 2307 config->bDataBits = UMP_UART_CHAR8BITS; 2308 dbg("%s - data bits = 8", __func__); 2309 break; 2310 } 2311 2312 if (cflag & PARENB) { 2313 if (cflag & PARODD) { 2314 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2315 config->bParity = UMP_UART_ODDPARITY; 2316 dbg("%s - parity = odd", __func__); 2317 } else { 2318 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2319 config->bParity = UMP_UART_EVENPARITY; 2320 dbg("%s - parity = even", __func__); 2321 } 2322 } else { 2323 config->bParity = UMP_UART_NOPARITY; 2324 dbg("%s - parity = none", __func__); 2325 } 2326 2327 if (cflag & CSTOPB) { 2328 config->bStopBits = UMP_UART_STOPBIT2; 2329 dbg("%s - stop bits = 2", __func__); 2330 } else { 2331 config->bStopBits = UMP_UART_STOPBIT1; 2332 dbg("%s - stop bits = 1", __func__); 2333 } 2334 2335 /* figure out the flow control settings */ 2336 if (cflag & CRTSCTS) { 2337 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2338 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2339 dbg("%s - RTS/CTS is enabled", __func__); 2340 } else { 2341 dbg("%s - RTS/CTS is disabled", __func__); 2342 tty->hw_stopped = 0; 2343 restart_read(edge_port); 2344 } 2345 2346 /* if we are implementing XON/XOFF, set the start and stop 2347 character in the device */ 2348 config->cXon = START_CHAR(tty); 2349 config->cXoff = STOP_CHAR(tty); 2350 2351 /* if we are implementing INBOUND XON/XOFF */ 2352 if (I_IXOFF(tty)) { 2353 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2354 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2355 __func__, config->cXon, config->cXoff); 2356 } else 2357 dbg("%s - INBOUND XON/XOFF is disabled", __func__); 2358 2359 /* if we are implementing OUTBOUND XON/XOFF */ 2360 if (I_IXON(tty)) { 2361 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2362 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2363 __func__, config->cXon, config->cXoff); 2364 } else 2365 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); 2366 2367 tty->termios->c_cflag &= ~CMSPAR; 2368 2369 /* Round the baud rate */ 2370 baud = tty_get_baud_rate(tty); 2371 if (!baud) { 2372 /* pick a default, any default... */ 2373 baud = 9600; 2374 } else 2375 tty_encode_baud_rate(tty, baud, baud); 2376 2377 edge_port->baud_rate = baud; 2378 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2379 2380 /* FIXME: Recompute actual baud from divisor here */ 2381 2382 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, 2383 config->wBaudRate); 2384 2385 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); 2386 dbg("wFlags: 0x%x", config->wFlags); 2387 dbg("bDataBits: %d", config->bDataBits); 2388 dbg("bParity: %d", config->bParity); 2389 dbg("bStopBits: %d", config->bStopBits); 2390 dbg("cXon: %d", config->cXon); 2391 dbg("cXoff: %d", config->cXoff); 2392 dbg("bUartMode: %d", config->bUartMode); 2393 2394 /* move the word values into big endian mode */ 2395 cpu_to_be16s(&config->wFlags); 2396 cpu_to_be16s(&config->wBaudRate); 2397 2398 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2399 (__u8)(UMPM_UART1_PORT + port_number), 2400 0, (__u8 *)config, sizeof(*config)); 2401 if (status) 2402 dbg("%s - error %d when trying to write config to device", 2403 __func__, status); 2404 kfree(config); 2405} 2406 2407static void edge_set_termios(struct tty_struct *tty, 2408 struct usb_serial_port *port, struct ktermios *old_termios) 2409{ 2410 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2411 unsigned int cflag; 2412 2413 cflag = tty->termios->c_cflag; 2414 2415 dbg("%s - clfag %08x iflag %08x", __func__, 2416 tty->termios->c_cflag, tty->termios->c_iflag); 2417 dbg("%s - old clfag %08x old iflag %08x", __func__, 2418 old_termios->c_cflag, old_termios->c_iflag); 2419 dbg("%s - port %d", __func__, port->number); 2420 2421 if (edge_port == NULL) 2422 return; 2423 /* change the port settings to the new ones specified */ 2424 change_port_settings(tty, edge_port, old_termios); 2425} 2426 2427static int edge_tiocmset(struct tty_struct *tty, 2428 unsigned int set, unsigned int clear) 2429{ 2430 struct usb_serial_port *port = tty->driver_data; 2431 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2432 unsigned int mcr; 2433 unsigned long flags; 2434 2435 dbg("%s - port %d", __func__, port->number); 2436 2437 spin_lock_irqsave(&edge_port->ep_lock, flags); 2438 mcr = edge_port->shadow_mcr; 2439 if (set & TIOCM_RTS) 2440 mcr |= MCR_RTS; 2441 if (set & TIOCM_DTR) 2442 mcr |= MCR_DTR; 2443 if (set & TIOCM_LOOP) 2444 mcr |= MCR_LOOPBACK; 2445 2446 if (clear & TIOCM_RTS) 2447 mcr &= ~MCR_RTS; 2448 if (clear & TIOCM_DTR) 2449 mcr &= ~MCR_DTR; 2450 if (clear & TIOCM_LOOP) 2451 mcr &= ~MCR_LOOPBACK; 2452 2453 edge_port->shadow_mcr = mcr; 2454 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2455 2456 restore_mcr(edge_port, mcr); 2457 return 0; 2458} 2459 2460static int edge_tiocmget(struct tty_struct *tty) 2461{ 2462 struct usb_serial_port *port = tty->driver_data; 2463 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2464 unsigned int result = 0; 2465 unsigned int msr; 2466 unsigned int mcr; 2467 unsigned long flags; 2468 2469 dbg("%s - port %d", __func__, port->number); 2470 2471 spin_lock_irqsave(&edge_port->ep_lock, flags); 2472 2473 msr = edge_port->shadow_msr; 2474 mcr = edge_port->shadow_mcr; 2475 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2476 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2477 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2478 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2479 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2480 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2481 2482 2483 dbg("%s -- %x", __func__, result); 2484 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2485 2486 return result; 2487} 2488 2489static int edge_get_icount(struct tty_struct *tty, 2490 struct serial_icounter_struct *icount) 2491{ 2492 struct usb_serial_port *port = tty->driver_data; 2493 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2494 struct async_icount *ic = &edge_port->icount; 2495 2496 icount->cts = ic->cts; 2497 icount->dsr = ic->dsr; 2498 icount->rng = ic->rng; 2499 icount->dcd = ic->dcd; 2500 icount->tx = ic->tx; 2501 icount->rx = ic->rx; 2502 icount->frame = ic->frame; 2503 icount->parity = ic->parity; 2504 icount->overrun = ic->overrun; 2505 icount->brk = ic->brk; 2506 icount->buf_overrun = ic->buf_overrun; 2507 return 0; 2508} 2509 2510static int get_serial_info(struct edgeport_port *edge_port, 2511 struct serial_struct __user *retinfo) 2512{ 2513 struct serial_struct tmp; 2514 2515 if (!retinfo) 2516 return -EFAULT; 2517 2518 memset(&tmp, 0, sizeof(tmp)); 2519 2520 tmp.type = PORT_16550A; 2521 tmp.line = edge_port->port->serial->minor; 2522 tmp.port = edge_port->port->number; 2523 tmp.irq = 0; 2524 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2525 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2526 tmp.baud_base = 9600; 2527 tmp.close_delay = 5*HZ; 2528 tmp.closing_wait = closing_wait; 2529 2530 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2531 return -EFAULT; 2532 return 0; 2533} 2534 2535static int edge_ioctl(struct tty_struct *tty, 2536 unsigned int cmd, unsigned long arg) 2537{ 2538 struct usb_serial_port *port = tty->driver_data; 2539 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2540 struct async_icount cnow; 2541 struct async_icount cprev; 2542 2543 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); 2544 2545 switch (cmd) { 2546 case TIOCGSERIAL: 2547 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); 2548 return get_serial_info(edge_port, 2549 (struct serial_struct __user *) arg); 2550 case TIOCMIWAIT: 2551 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); 2552 cprev = edge_port->icount; 2553 while (1) { 2554 interruptible_sleep_on(&edge_port->delta_msr_wait); 2555 /* see if a signal did it */ 2556 if (signal_pending(current)) 2557 return -ERESTARTSYS; 2558 cnow = edge_port->icount; 2559 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2560 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2561 return -EIO; /* no change => error */ 2562 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2563 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2564 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2565 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2566 return 0; 2567 } 2568 cprev = cnow; 2569 } 2570 /* not reached */ 2571 break; 2572 } 2573 return -ENOIOCTLCMD; 2574} 2575 2576static void edge_break(struct tty_struct *tty, int break_state) 2577{ 2578 struct usb_serial_port *port = tty->driver_data; 2579 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2580 int status; 2581 int bv = 0; /* Off */ 2582 2583 dbg("%s - state = %d", __func__, break_state); 2584 2585 /* chase the port close */ 2586 chase_port(edge_port, 0, 0); 2587 2588 if (break_state == -1) 2589 bv = 1; /* On */ 2590 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2591 if (status) 2592 dbg("%s - error %d sending break set/clear command.", 2593 __func__, status); 2594} 2595 2596static int edge_startup(struct usb_serial *serial) 2597{ 2598 struct edgeport_serial *edge_serial; 2599 struct edgeport_port *edge_port; 2600 struct usb_device *dev; 2601 int status; 2602 int i; 2603 2604 dev = serial->dev; 2605 2606 /* create our private serial structure */ 2607 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2608 if (edge_serial == NULL) { 2609 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2610 return -ENOMEM; 2611 } 2612 mutex_init(&edge_serial->es_lock); 2613 edge_serial->serial = serial; 2614 usb_set_serial_data(serial, edge_serial); 2615 2616 status = download_fw(edge_serial); 2617 if (status) { 2618 kfree(edge_serial); 2619 return status; 2620 } 2621 2622 /* set up our port private structures */ 2623 for (i = 0; i < serial->num_ports; ++i) { 2624 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); 2625 if (edge_port == NULL) { 2626 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2627 __func__); 2628 goto cleanup; 2629 } 2630 spin_lock_init(&edge_port->ep_lock); 2631 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2632 GFP_KERNEL)) { 2633 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2634 __func__); 2635 kfree(edge_port); 2636 goto cleanup; 2637 } 2638 edge_port->port = serial->port[i]; 2639 edge_port->edge_serial = edge_serial; 2640 usb_set_serial_port_data(serial->port[i], edge_port); 2641 edge_port->bUartMode = default_uart_mode; 2642 } 2643 2644 return 0; 2645 2646cleanup: 2647 for (--i; i >= 0; --i) { 2648 edge_port = usb_get_serial_port_data(serial->port[i]); 2649 kfifo_free(&edge_port->write_fifo); 2650 kfree(edge_port); 2651 usb_set_serial_port_data(serial->port[i], NULL); 2652 } 2653 kfree(edge_serial); 2654 usb_set_serial_data(serial, NULL); 2655 return -ENOMEM; 2656} 2657 2658static void edge_disconnect(struct usb_serial *serial) 2659{ 2660 dbg("%s", __func__); 2661} 2662 2663static void edge_release(struct usb_serial *serial) 2664{ 2665 int i; 2666 struct edgeport_port *edge_port; 2667 2668 dbg("%s", __func__); 2669 2670 for (i = 0; i < serial->num_ports; ++i) { 2671 edge_port = usb_get_serial_port_data(serial->port[i]); 2672 kfifo_free(&edge_port->write_fifo); 2673 kfree(edge_port); 2674 } 2675 kfree(usb_get_serial_data(serial)); 2676} 2677 2678 2679/* Sysfs Attributes */ 2680 2681static ssize_t show_uart_mode(struct device *dev, 2682 struct device_attribute *attr, char *buf) 2683{ 2684 struct usb_serial_port *port = to_usb_serial_port(dev); 2685 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2686 2687 return sprintf(buf, "%d\n", edge_port->bUartMode); 2688} 2689 2690static ssize_t store_uart_mode(struct device *dev, 2691 struct device_attribute *attr, const char *valbuf, size_t count) 2692{ 2693 struct usb_serial_port *port = to_usb_serial_port(dev); 2694 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2695 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2696 2697 dbg("%s: setting uart_mode = %d", __func__, v); 2698 2699 if (v < 256) 2700 edge_port->bUartMode = v; 2701 else 2702 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2703 2704 return count; 2705} 2706 2707static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2708 store_uart_mode); 2709 2710static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2711{ 2712 return device_create_file(&port->dev, &dev_attr_uart_mode); 2713} 2714 2715static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2716{ 2717 device_remove_file(&port->dev, &dev_attr_uart_mode); 2718 return 0; 2719} 2720 2721 2722static struct usb_serial_driver edgeport_1port_device = { 2723 .driver = { 2724 .owner = THIS_MODULE, 2725 .name = "edgeport_ti_1", 2726 }, 2727 .description = "Edgeport TI 1 port adapter", 2728 .usb_driver = &io_driver, 2729 .id_table = edgeport_1port_id_table, 2730 .num_ports = 1, 2731 .open = edge_open, 2732 .close = edge_close, 2733 .throttle = edge_throttle, 2734 .unthrottle = edge_unthrottle, 2735 .attach = edge_startup, 2736 .disconnect = edge_disconnect, 2737 .release = edge_release, 2738 .port_probe = edge_create_sysfs_attrs, 2739 .port_remove = edge_remove_sysfs_attrs, 2740 .ioctl = edge_ioctl, 2741 .set_termios = edge_set_termios, 2742 .tiocmget = edge_tiocmget, 2743 .tiocmset = edge_tiocmset, 2744 .get_icount = edge_get_icount, 2745 .write = edge_write, 2746 .write_room = edge_write_room, 2747 .chars_in_buffer = edge_chars_in_buffer, 2748 .break_ctl = edge_break, 2749 .read_int_callback = edge_interrupt_callback, 2750 .read_bulk_callback = edge_bulk_in_callback, 2751 .write_bulk_callback = edge_bulk_out_callback, 2752}; 2753 2754static struct usb_serial_driver edgeport_2port_device = { 2755 .driver = { 2756 .owner = THIS_MODULE, 2757 .name = "edgeport_ti_2", 2758 }, 2759 .description = "Edgeport TI 2 port adapter", 2760 .usb_driver = &io_driver, 2761 .id_table = edgeport_2port_id_table, 2762 .num_ports = 2, 2763 .open = edge_open, 2764 .close = edge_close, 2765 .throttle = edge_throttle, 2766 .unthrottle = edge_unthrottle, 2767 .attach = edge_startup, 2768 .disconnect = edge_disconnect, 2769 .release = edge_release, 2770 .port_probe = edge_create_sysfs_attrs, 2771 .port_remove = edge_remove_sysfs_attrs, 2772 .ioctl = edge_ioctl, 2773 .set_termios = edge_set_termios, 2774 .tiocmget = edge_tiocmget, 2775 .tiocmset = edge_tiocmset, 2776 .write = edge_write, 2777 .write_room = edge_write_room, 2778 .chars_in_buffer = edge_chars_in_buffer, 2779 .break_ctl = edge_break, 2780 .read_int_callback = edge_interrupt_callback, 2781 .read_bulk_callback = edge_bulk_in_callback, 2782 .write_bulk_callback = edge_bulk_out_callback, 2783}; 2784 2785 2786static int __init edgeport_init(void) 2787{ 2788 int retval; 2789 retval = usb_serial_register(&edgeport_1port_device); 2790 if (retval) 2791 goto failed_1port_device_register; 2792 retval = usb_serial_register(&edgeport_2port_device); 2793 if (retval) 2794 goto failed_2port_device_register; 2795 retval = usb_register(&io_driver); 2796 if (retval) 2797 goto failed_usb_register; 2798 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 2799 DRIVER_DESC "\n"); 2800 return 0; 2801failed_usb_register: 2802 usb_serial_deregister(&edgeport_2port_device); 2803failed_2port_device_register: 2804 usb_serial_deregister(&edgeport_1port_device); 2805failed_1port_device_register: 2806 return retval; 2807} 2808 2809static void __exit edgeport_exit(void) 2810{ 2811 usb_deregister(&io_driver); 2812 usb_serial_deregister(&edgeport_1port_device); 2813 usb_serial_deregister(&edgeport_2port_device); 2814} 2815 2816module_init(edgeport_init); 2817module_exit(edgeport_exit); 2818 2819/* Module information */ 2820MODULE_AUTHOR(DRIVER_AUTHOR); 2821MODULE_DESCRIPTION(DRIVER_DESC); 2822MODULE_LICENSE("GPL"); 2823MODULE_FIRMWARE("edgeport/down3.bin"); 2824 2825module_param(debug, bool, S_IRUGO | S_IWUSR); 2826MODULE_PARM_DESC(debug, "Debug enabled or not"); 2827 2828module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2829MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2830 2831module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2832MODULE_PARM_DESC(ignore_cpu_rev, 2833 "Ignore the cpu revision when connecting to a device"); 2834 2835module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2836MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2837