io_ti.c revision 8485f8c9652b226726827e61fb43647bf22e691f
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}; 206 207 208static unsigned char OperationalMajorVersion; 209static unsigned char OperationalMinorVersion; 210static unsigned short OperationalBuildNumber; 211 212static bool debug; 213 214static int closing_wait = EDGE_CLOSING_WAIT; 215static bool ignore_cpu_rev; 216static int default_uart_mode; /* RS232 */ 217 218static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 219 unsigned char *data, int length); 220 221static void stop_read(struct edgeport_port *edge_port); 222static int restart_read(struct edgeport_port *edge_port); 223 224static void edge_set_termios(struct tty_struct *tty, 225 struct usb_serial_port *port, struct ktermios *old_termios); 226static void edge_send(struct tty_struct *tty); 227 228/* sysfs attributes */ 229static int edge_create_sysfs_attrs(struct usb_serial_port *port); 230static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 231 232 233static int ti_vread_sync(struct usb_device *dev, __u8 request, 234 __u16 value, __u16 index, u8 *data, int size) 235{ 236 int status; 237 238 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 239 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 240 value, index, data, size, 1000); 241 if (status < 0) 242 return status; 243 if (status != size) { 244 dbg("%s - wanted to write %d, but only wrote %d", 245 __func__, size, status); 246 return -ECOMM; 247 } 248 return 0; 249} 250 251static int ti_vsend_sync(struct usb_device *dev, __u8 request, 252 __u16 value, __u16 index, u8 *data, int size) 253{ 254 int status; 255 256 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 257 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 258 value, index, data, size, 1000); 259 if (status < 0) 260 return status; 261 if (status != size) { 262 dbg("%s - wanted to write %d, but only wrote %d", 263 __func__, size, status); 264 return -ECOMM; 265 } 266 return 0; 267} 268 269static int send_cmd(struct usb_device *dev, __u8 command, 270 __u8 moduleid, __u16 value, u8 *data, 271 int size) 272{ 273 return ti_vsend_sync(dev, command, value, moduleid, data, size); 274} 275 276/* clear tx/rx buffers and fifo in TI UMP */ 277static int purge_port(struct usb_serial_port *port, __u16 mask) 278{ 279 int port_number = port->number - port->serial->minor; 280 281 dbg("%s - port %d, mask %x", __func__, port_number, mask); 282 283 return send_cmd(port->serial->dev, 284 UMPC_PURGE_PORT, 285 (__u8)(UMPM_UART1_PORT + port_number), 286 mask, 287 NULL, 288 0); 289} 290 291/** 292 * read_download_mem - Read edgeport memory from TI chip 293 * @dev: usb device pointer 294 * @start_address: Device CPU address at which to read 295 * @length: Length of above data 296 * @address_type: Can read both XDATA and I2C 297 * @buffer: pointer to input data buffer 298 */ 299static int read_download_mem(struct usb_device *dev, int start_address, 300 int length, __u8 address_type, __u8 *buffer) 301{ 302 int status = 0; 303 __u8 read_length; 304 __be16 be_start_address; 305 306 dbg("%s - @ %x for %d", __func__, start_address, length); 307 308 /* Read in blocks of 64 bytes 309 * (TI firmware can't handle more than 64 byte reads) 310 */ 311 while (length) { 312 if (length > 64) 313 read_length = 64; 314 else 315 read_length = (__u8)length; 316 317 if (read_length > 1) { 318 dbg("%s - @ %x for %d", __func__, 319 start_address, read_length); 320 } 321 be_start_address = cpu_to_be16(start_address); 322 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 323 (__u16)address_type, 324 (__force __u16)be_start_address, 325 buffer, read_length); 326 327 if (status) { 328 dbg("%s - ERROR %x", __func__, status); 329 return status; 330 } 331 332 if (read_length > 1) 333 usb_serial_debug_data(debug, &dev->dev, __func__, 334 read_length, buffer); 335 336 /* Update pointers/length */ 337 start_address += read_length; 338 buffer += read_length; 339 length -= read_length; 340 } 341 342 return status; 343} 344 345static int read_ram(struct usb_device *dev, int start_address, 346 int length, __u8 *buffer) 347{ 348 return read_download_mem(dev, start_address, length, 349 DTK_ADDR_SPACE_XDATA, buffer); 350} 351 352/* Read edgeport memory to a given block */ 353static int read_boot_mem(struct edgeport_serial *serial, 354 int start_address, int length, __u8 *buffer) 355{ 356 int status = 0; 357 int i; 358 359 for (i = 0; i < length; i++) { 360 status = ti_vread_sync(serial->serial->dev, 361 UMPC_MEMORY_READ, serial->TI_I2C_Type, 362 (__u16)(start_address+i), &buffer[i], 0x01); 363 if (status) { 364 dbg("%s - ERROR %x", __func__, status); 365 return status; 366 } 367 } 368 369 dbg("%s - start_address = %x, length = %d", 370 __func__, start_address, length); 371 usb_serial_debug_data(debug, &serial->serial->dev->dev, 372 __func__, length, buffer); 373 374 serial->TiReadI2C = 1; 375 376 return status; 377} 378 379/* Write given block to TI EPROM memory */ 380static int write_boot_mem(struct edgeport_serial *serial, 381 int start_address, int length, __u8 *buffer) 382{ 383 int status = 0; 384 int i; 385 u8 *temp; 386 387 /* Must do a read before write */ 388 if (!serial->TiReadI2C) { 389 temp = kmalloc(1, GFP_KERNEL); 390 if (!temp) { 391 dev_err(&serial->serial->dev->dev, 392 "%s - out of memory\n", __func__); 393 return -ENOMEM; 394 } 395 status = read_boot_mem(serial, 0, 1, temp); 396 kfree(temp); 397 if (status) 398 return status; 399 } 400 401 for (i = 0; i < length; ++i) { 402 status = ti_vsend_sync(serial->serial->dev, 403 UMPC_MEMORY_WRITE, buffer[i], 404 (__u16)(i + start_address), NULL, 0); 405 if (status) 406 return status; 407 } 408 409 dbg("%s - start_sddr = %x, length = %d", 410 __func__, start_address, length); 411 usb_serial_debug_data(debug, &serial->serial->dev->dev, 412 __func__, length, buffer); 413 414 return status; 415} 416 417 418/* Write edgeport I2C memory to TI chip */ 419static int write_i2c_mem(struct edgeport_serial *serial, 420 int start_address, int length, __u8 address_type, __u8 *buffer) 421{ 422 int status = 0; 423 int write_length; 424 __be16 be_start_address; 425 426 /* We can only send a maximum of 1 aligned byte page at a time */ 427 428 /* calculate the number of bytes left in the first page */ 429 write_length = EPROM_PAGE_SIZE - 430 (start_address & (EPROM_PAGE_SIZE - 1)); 431 432 if (write_length > length) 433 write_length = length; 434 435 dbg("%s - BytesInFirstPage Addr = %x, length = %d", 436 __func__, start_address, write_length); 437 usb_serial_debug_data(debug, &serial->serial->dev->dev, 438 __func__, write_length, buffer); 439 440 /* Write first page */ 441 be_start_address = cpu_to_be16(start_address); 442 status = ti_vsend_sync(serial->serial->dev, 443 UMPC_MEMORY_WRITE, (__u16)address_type, 444 (__force __u16)be_start_address, 445 buffer, write_length); 446 if (status) { 447 dbg("%s - ERROR %d", __func__, status); 448 return status; 449 } 450 451 length -= write_length; 452 start_address += write_length; 453 buffer += write_length; 454 455 /* We should be aligned now -- can write 456 max page size bytes at a time */ 457 while (length) { 458 if (length > EPROM_PAGE_SIZE) 459 write_length = EPROM_PAGE_SIZE; 460 else 461 write_length = length; 462 463 dbg("%s - Page Write Addr = %x, length = %d", 464 __func__, start_address, write_length); 465 usb_serial_debug_data(debug, &serial->serial->dev->dev, 466 __func__, write_length, buffer); 467 468 /* Write next page */ 469 be_start_address = cpu_to_be16(start_address); 470 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 471 (__u16)address_type, 472 (__force __u16)be_start_address, 473 buffer, write_length); 474 if (status) { 475 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", 476 __func__, status); 477 return status; 478 } 479 480 length -= write_length; 481 start_address += write_length; 482 buffer += write_length; 483 } 484 return status; 485} 486 487/* Examine the UMP DMA registers and LSR 488 * 489 * Check the MSBit of the X and Y DMA byte count registers. 490 * A zero in this bit indicates that the TX DMA buffers are empty 491 * then check the TX Empty bit in the UART. 492 */ 493static int tx_active(struct edgeport_port *port) 494{ 495 int status; 496 struct out_endpoint_desc_block *oedb; 497 __u8 *lsr; 498 int bytes_left = 0; 499 500 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 501 if (!oedb) { 502 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 503 return -ENOMEM; 504 } 505 506 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 507 as not all platforms can do DMA 508 from stack */ 509 if (!lsr) { 510 kfree(oedb); 511 return -ENOMEM; 512 } 513 /* Read the DMA Count Registers */ 514 status = read_ram(port->port->serial->dev, port->dma_address, 515 sizeof(*oedb), (void *)oedb); 516 if (status) 517 goto exit_is_tx_active; 518 519 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); 520 521 /* and the LSR */ 522 status = read_ram(port->port->serial->dev, 523 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 524 525 if (status) 526 goto exit_is_tx_active; 527 dbg("%s - LSR = 0x%X", __func__, *lsr); 528 529 /* If either buffer has data or we are transmitting then return TRUE */ 530 if ((oedb->XByteCount & 0x80) != 0) 531 bytes_left += 64; 532 533 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 534 bytes_left += 1; 535 536 /* We return Not Active if we get any kind of error */ 537exit_is_tx_active: 538 dbg("%s - return %d", __func__, bytes_left); 539 540 kfree(lsr); 541 kfree(oedb); 542 return bytes_left; 543} 544 545static void chase_port(struct edgeport_port *port, unsigned long timeout, 546 int flush) 547{ 548 int baud_rate; 549 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 550 wait_queue_t wait; 551 unsigned long flags; 552 553 if (!timeout) 554 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 555 556 /* wait for data to drain from the buffer */ 557 spin_lock_irqsave(&port->ep_lock, flags); 558 init_waitqueue_entry(&wait, current); 559 add_wait_queue(&tty->write_wait, &wait); 560 for (;;) { 561 set_current_state(TASK_INTERRUPTIBLE); 562 if (kfifo_len(&port->write_fifo) == 0 563 || timeout == 0 || signal_pending(current) 564 || !usb_get_intfdata(port->port->serial->interface)) 565 /* disconnect */ 566 break; 567 spin_unlock_irqrestore(&port->ep_lock, flags); 568 timeout = schedule_timeout(timeout); 569 spin_lock_irqsave(&port->ep_lock, flags); 570 } 571 set_current_state(TASK_RUNNING); 572 remove_wait_queue(&tty->write_wait, &wait); 573 if (flush) 574 kfifo_reset_out(&port->write_fifo); 575 spin_unlock_irqrestore(&port->ep_lock, flags); 576 tty_kref_put(tty); 577 578 /* wait for data to drain from the device */ 579 timeout += jiffies; 580 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 581 && usb_get_intfdata(port->port->serial->interface)) { 582 /* not disconnected */ 583 if (!tx_active(port)) 584 break; 585 msleep(10); 586 } 587 588 /* disconnected */ 589 if (!usb_get_intfdata(port->port->serial->interface)) 590 return; 591 592 /* wait one more character time, based on baud rate */ 593 /* (tx_active doesn't seem to wait for the last byte) */ 594 baud_rate = port->baud_rate; 595 if (baud_rate == 0) 596 baud_rate = 50; 597 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 598} 599 600static int choose_config(struct usb_device *dev) 601{ 602 /* 603 * There may be multiple configurations on this device, in which case 604 * we would need to read and parse all of them to find out which one 605 * we want. However, we just support one config at this point, 606 * configuration # 1, which is Config Descriptor 0. 607 */ 608 609 dbg("%s - Number of Interfaces = %d", 610 __func__, dev->config->desc.bNumInterfaces); 611 dbg("%s - MAX Power = %d", 612 __func__, dev->config->desc.bMaxPower * 2); 613 614 if (dev->config->desc.bNumInterfaces != 1) { 615 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", 616 __func__); 617 return -ENODEV; 618 } 619 620 return 0; 621} 622 623static int read_rom(struct edgeport_serial *serial, 624 int start_address, int length, __u8 *buffer) 625{ 626 int status; 627 628 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 629 status = read_download_mem(serial->serial->dev, 630 start_address, 631 length, 632 serial->TI_I2C_Type, 633 buffer); 634 } else { 635 status = read_boot_mem(serial, start_address, length, 636 buffer); 637 } 638 return status; 639} 640 641static int write_rom(struct edgeport_serial *serial, int start_address, 642 int length, __u8 *buffer) 643{ 644 if (serial->product_info.TiMode == TI_MODE_BOOT) 645 return write_boot_mem(serial, start_address, length, 646 buffer); 647 648 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 649 return write_i2c_mem(serial, start_address, length, 650 serial->TI_I2C_Type, buffer); 651 return -EINVAL; 652} 653 654 655 656/* Read a descriptor header from I2C based on type */ 657static int get_descriptor_addr(struct edgeport_serial *serial, 658 int desc_type, struct ti_i2c_desc *rom_desc) 659{ 660 int start_address; 661 int status; 662 663 /* Search for requested descriptor in I2C */ 664 start_address = 2; 665 do { 666 status = read_rom(serial, 667 start_address, 668 sizeof(struct ti_i2c_desc), 669 (__u8 *)rom_desc); 670 if (status) 671 return 0; 672 673 if (rom_desc->Type == desc_type) 674 return start_address; 675 676 start_address = start_address + sizeof(struct ti_i2c_desc) 677 + rom_desc->Size; 678 679 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 680 681 return 0; 682} 683 684/* Validate descriptor checksum */ 685static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 686{ 687 __u16 i; 688 __u8 cs = 0; 689 690 for (i = 0; i < rom_desc->Size; i++) 691 cs = (__u8)(cs + buffer[i]); 692 693 if (cs != rom_desc->CheckSum) { 694 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 695 return -EINVAL; 696 } 697 return 0; 698} 699 700/* Make sure that the I2C image is good */ 701static int check_i2c_image(struct edgeport_serial *serial) 702{ 703 struct device *dev = &serial->serial->dev->dev; 704 int status = 0; 705 struct ti_i2c_desc *rom_desc; 706 int start_address = 2; 707 __u8 *buffer; 708 __u16 ttype; 709 710 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 711 if (!rom_desc) { 712 dev_err(dev, "%s - out of memory\n", __func__); 713 return -ENOMEM; 714 } 715 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 716 if (!buffer) { 717 dev_err(dev, "%s - out of memory when allocating buffer\n", 718 __func__); 719 kfree(rom_desc); 720 return -ENOMEM; 721 } 722 723 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 724 status = read_rom(serial, 0, 1, buffer); 725 if (status) 726 goto out; 727 728 if (*buffer != UMP5152 && *buffer != UMP3410) { 729 dev_err(dev, "%s - invalid buffer signature\n", __func__); 730 status = -ENODEV; 731 goto out; 732 } 733 734 do { 735 /* Validate the I2C */ 736 status = read_rom(serial, 737 start_address, 738 sizeof(struct ti_i2c_desc), 739 (__u8 *)rom_desc); 740 if (status) 741 break; 742 743 if ((start_address + sizeof(struct ti_i2c_desc) + 744 rom_desc->Size) > TI_MAX_I2C_SIZE) { 745 status = -ENODEV; 746 dbg("%s - structure too big, erroring out.", __func__); 747 break; 748 } 749 750 dbg("%s Type = 0x%x", __func__, rom_desc->Type); 751 752 /* Skip type 2 record */ 753 ttype = rom_desc->Type & 0x0f; 754 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 755 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 756 /* Read the descriptor data */ 757 status = read_rom(serial, start_address + 758 sizeof(struct ti_i2c_desc), 759 rom_desc->Size, buffer); 760 if (status) 761 break; 762 763 status = valid_csum(rom_desc, buffer); 764 if (status) 765 break; 766 } 767 start_address = start_address + sizeof(struct ti_i2c_desc) + 768 rom_desc->Size; 769 770 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 771 (start_address < TI_MAX_I2C_SIZE)); 772 773 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 774 (start_address > TI_MAX_I2C_SIZE)) 775 status = -ENODEV; 776 777out: 778 kfree(buffer); 779 kfree(rom_desc); 780 return status; 781} 782 783static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 784{ 785 int status; 786 int start_address; 787 struct ti_i2c_desc *rom_desc; 788 struct edge_ti_manuf_descriptor *desc; 789 790 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 791 if (!rom_desc) { 792 dev_err(&serial->serial->dev->dev, "%s - out of memory\n", 793 __func__); 794 return -ENOMEM; 795 } 796 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 797 rom_desc); 798 799 if (!start_address) { 800 dbg("%s - Edge Descriptor not found in I2C", __func__); 801 status = -ENODEV; 802 goto exit; 803 } 804 805 /* Read the descriptor data */ 806 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 807 rom_desc->Size, buffer); 808 if (status) 809 goto exit; 810 811 status = valid_csum(rom_desc, buffer); 812 813 desc = (struct edge_ti_manuf_descriptor *)buffer; 814 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); 815 dbg("%s - Version %d", __func__, desc->Version); 816 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); 817 dbg("%s - NumPorts %d", __func__, desc->NumPorts); 818 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); 819 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); 820 821exit: 822 kfree(rom_desc); 823 return status; 824} 825 826/* Build firmware header used for firmware update */ 827static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 828{ 829 __u8 *buffer; 830 int buffer_size; 831 int i; 832 int err; 833 __u8 cs = 0; 834 struct ti_i2c_desc *i2c_header; 835 struct ti_i2c_image_header *img_header; 836 struct ti_i2c_firmware_rec *firmware_rec; 837 const struct firmware *fw; 838 const char *fw_name = "edgeport/down3.bin"; 839 840 /* In order to update the I2C firmware we must change the type 2 record 841 * to type 0xF2. This will force the UMP to come up in Boot Mode. 842 * Then while in boot mode, the driver will download the latest 843 * firmware (padded to 15.5k) into the UMP ram. And finally when the 844 * device comes back up in download mode the driver will cause the new 845 * firmware to be copied from the UMP Ram to I2C and the firmware will 846 * update the record type from 0xf2 to 0x02. 847 */ 848 849 /* Allocate a 15.5k buffer + 2 bytes for version number 850 * (Firmware Record) */ 851 buffer_size = (((1024 * 16) - 512 ) + 852 sizeof(struct ti_i2c_firmware_rec)); 853 854 buffer = kmalloc(buffer_size, GFP_KERNEL); 855 if (!buffer) { 856 dev_err(dev, "%s - out of memory\n", __func__); 857 return -ENOMEM; 858 } 859 860 // Set entire image of 0xffs 861 memset(buffer, 0xff, buffer_size); 862 863 err = request_firmware(&fw, fw_name, dev); 864 if (err) { 865 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 866 fw_name, err); 867 kfree(buffer); 868 return err; 869 } 870 871 /* Save Download Version Number */ 872 OperationalMajorVersion = fw->data[0]; 873 OperationalMinorVersion = fw->data[1]; 874 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 875 876 /* Copy version number into firmware record */ 877 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 878 879 firmware_rec->Ver_Major = OperationalMajorVersion; 880 firmware_rec->Ver_Minor = OperationalMinorVersion; 881 882 /* Pointer to fw_down memory image */ 883 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 884 885 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 886 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 887 le16_to_cpu(img_header->Length)); 888 889 release_firmware(fw); 890 891 for (i=0; i < buffer_size; i++) { 892 cs = (__u8)(cs + buffer[i]); 893 } 894 895 kfree(buffer); 896 897 /* Build new header */ 898 i2c_header = (struct ti_i2c_desc *)header; 899 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 900 901 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 902 i2c_header->Size = (__u16)buffer_size; 903 i2c_header->CheckSum = cs; 904 firmware_rec->Ver_Major = OperationalMajorVersion; 905 firmware_rec->Ver_Minor = OperationalMinorVersion; 906 907 return 0; 908} 909 910/* Try to figure out what type of I2c we have */ 911static int i2c_type_bootmode(struct edgeport_serial *serial) 912{ 913 int status; 914 u8 *data; 915 916 data = kmalloc(1, GFP_KERNEL); 917 if (!data) { 918 dev_err(&serial->serial->dev->dev, 919 "%s - out of memory\n", __func__); 920 return -ENOMEM; 921 } 922 923 /* Try to read type 2 */ 924 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 925 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 926 if (status) 927 dbg("%s - read 2 status error = %d", __func__, status); 928 else 929 dbg("%s - read 2 data = 0x%x", __func__, *data); 930 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 931 dbg("%s - ROM_TYPE_II", __func__); 932 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 933 goto out; 934 } 935 936 /* Try to read type 3 */ 937 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 938 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 939 if (status) 940 dbg("%s - read 3 status error = %d", __func__, status); 941 else 942 dbg("%s - read 2 data = 0x%x", __func__, *data); 943 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 944 dbg("%s - ROM_TYPE_III", __func__); 945 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 946 goto out; 947 } 948 949 dbg("%s - Unknown", __func__); 950 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 951 status = -ENODEV; 952out: 953 kfree(data); 954 return status; 955} 956 957static int bulk_xfer(struct usb_serial *serial, void *buffer, 958 int length, int *num_sent) 959{ 960 int status; 961 962 status = usb_bulk_msg(serial->dev, 963 usb_sndbulkpipe(serial->dev, 964 serial->port[0]->bulk_out_endpointAddress), 965 buffer, length, num_sent, 1000); 966 return status; 967} 968 969/* Download given firmware image to the device (IN BOOT MODE) */ 970static int download_code(struct edgeport_serial *serial, __u8 *image, 971 int image_length) 972{ 973 int status = 0; 974 int pos; 975 int transfer; 976 int done; 977 978 /* Transfer firmware image */ 979 for (pos = 0; pos < image_length; ) { 980 /* Read the next buffer from file */ 981 transfer = image_length - pos; 982 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 983 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 984 985 /* Transfer data */ 986 status = bulk_xfer(serial->serial, &image[pos], 987 transfer, &done); 988 if (status) 989 break; 990 /* Advance buffer pointer */ 991 pos += done; 992 } 993 994 return status; 995} 996 997/* FIXME!!! */ 998static int config_boot_dev(struct usb_device *dev) 999{ 1000 return 0; 1001} 1002 1003static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 1004{ 1005 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 1006} 1007 1008/** 1009 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 1010 * 1011 * This routine downloads the main operating code into the TI5052, using the 1012 * boot code already burned into E2PROM or ROM. 1013 */ 1014static int download_fw(struct edgeport_serial *serial) 1015{ 1016 struct device *dev = &serial->serial->dev->dev; 1017 int status = 0; 1018 int start_address; 1019 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1020 struct usb_interface_descriptor *interface; 1021 int download_cur_ver; 1022 int download_new_ver; 1023 1024 /* This routine is entered by both the BOOT mode and the Download mode 1025 * We can determine which code is running by the reading the config 1026 * descriptor and if we have only one bulk pipe it is in boot mode 1027 */ 1028 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1029 1030 /* Default to type 2 i2c */ 1031 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1032 1033 status = choose_config(serial->serial->dev); 1034 if (status) 1035 return status; 1036 1037 interface = &serial->serial->interface->cur_altsetting->desc; 1038 if (!interface) { 1039 dev_err(dev, "%s - no interface set, error!\n", __func__); 1040 return -ENODEV; 1041 } 1042 1043 /* 1044 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1045 * if we have more than one endpoint we are definitely in download 1046 * mode 1047 */ 1048 if (interface->bNumEndpoints > 1) 1049 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1050 else 1051 /* Otherwise we will remain in configuring mode */ 1052 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1053 1054 /********************************************************************/ 1055 /* Download Mode */ 1056 /********************************************************************/ 1057 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1058 struct ti_i2c_desc *rom_desc; 1059 1060 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); 1061 1062 status = check_i2c_image(serial); 1063 if (status) { 1064 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); 1065 return status; 1066 } 1067 1068 /* Validate Hardware version number 1069 * Read Manufacturing Descriptor from TI Based Edgeport 1070 */ 1071 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1072 if (!ti_manuf_desc) { 1073 dev_err(dev, "%s - out of memory.\n", __func__); 1074 return -ENOMEM; 1075 } 1076 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1077 if (status) { 1078 kfree(ti_manuf_desc); 1079 return status; 1080 } 1081 1082 /* Check version number of ION descriptor */ 1083 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1084 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1085 __func__, ti_cpu_rev(ti_manuf_desc)); 1086 kfree(ti_manuf_desc); 1087 return -EINVAL; 1088 } 1089 1090 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1091 if (!rom_desc) { 1092 dev_err(dev, "%s - out of memory.\n", __func__); 1093 kfree(ti_manuf_desc); 1094 return -ENOMEM; 1095 } 1096 1097 /* Search for type 2 record (firmware record) */ 1098 start_address = get_descriptor_addr(serial, 1099 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1100 if (start_address != 0) { 1101 struct ti_i2c_firmware_rec *firmware_version; 1102 u8 *record; 1103 1104 dbg("%s - Found Type FIRMWARE (Type 2) record", 1105 __func__); 1106 1107 firmware_version = kmalloc(sizeof(*firmware_version), 1108 GFP_KERNEL); 1109 if (!firmware_version) { 1110 dev_err(dev, "%s - out of memory.\n", __func__); 1111 kfree(rom_desc); 1112 kfree(ti_manuf_desc); 1113 return -ENOMEM; 1114 } 1115 1116 /* Validate version number 1117 * Read the descriptor data 1118 */ 1119 status = read_rom(serial, start_address + 1120 sizeof(struct ti_i2c_desc), 1121 sizeof(struct ti_i2c_firmware_rec), 1122 (__u8 *)firmware_version); 1123 if (status) { 1124 kfree(firmware_version); 1125 kfree(rom_desc); 1126 kfree(ti_manuf_desc); 1127 return status; 1128 } 1129 1130 /* Check version number of download with current 1131 version in I2c */ 1132 download_cur_ver = (firmware_version->Ver_Major << 8) + 1133 (firmware_version->Ver_Minor); 1134 download_new_ver = (OperationalMajorVersion << 8) + 1135 (OperationalMinorVersion); 1136 1137 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", 1138 __func__, 1139 firmware_version->Ver_Major, 1140 firmware_version->Ver_Minor, 1141 OperationalMajorVersion, 1142 OperationalMinorVersion); 1143 1144 /* Check if we have an old version in the I2C and 1145 update if necessary */ 1146 if (download_cur_ver < download_new_ver) { 1147 dbg("%s - Update I2C dld from %d.%d to %d.%d", 1148 __func__, 1149 firmware_version->Ver_Major, 1150 firmware_version->Ver_Minor, 1151 OperationalMajorVersion, 1152 OperationalMinorVersion); 1153 1154 record = kmalloc(1, GFP_KERNEL); 1155 if (!record) { 1156 dev_err(dev, "%s - out of memory.\n", 1157 __func__); 1158 kfree(firmware_version); 1159 kfree(rom_desc); 1160 kfree(ti_manuf_desc); 1161 return -ENOMEM; 1162 } 1163 /* In order to update the I2C firmware we must 1164 * change the type 2 record to type 0xF2. This 1165 * will force the UMP to come up in Boot Mode. 1166 * Then while in boot mode, the driver will 1167 * download the latest firmware (padded to 1168 * 15.5k) into the UMP ram. Finally when the 1169 * device comes back up in download mode the 1170 * driver will cause the new firmware to be 1171 * copied from the UMP Ram to I2C and the 1172 * firmware will update the record type from 1173 * 0xf2 to 0x02. 1174 */ 1175 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1176 1177 /* Change the I2C Firmware record type to 1178 0xf2 to trigger an update */ 1179 status = write_rom(serial, start_address, 1180 sizeof(*record), record); 1181 if (status) { 1182 kfree(record); 1183 kfree(firmware_version); 1184 kfree(rom_desc); 1185 kfree(ti_manuf_desc); 1186 return status; 1187 } 1188 1189 /* verify the write -- must do this in order 1190 * for write to complete before we do the 1191 * hardware reset 1192 */ 1193 status = read_rom(serial, 1194 start_address, 1195 sizeof(*record), 1196 record); 1197 if (status) { 1198 kfree(record); 1199 kfree(firmware_version); 1200 kfree(rom_desc); 1201 kfree(ti_manuf_desc); 1202 return status; 1203 } 1204 1205 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1206 dev_err(dev, 1207 "%s - error resetting device\n", 1208 __func__); 1209 kfree(record); 1210 kfree(firmware_version); 1211 kfree(rom_desc); 1212 kfree(ti_manuf_desc); 1213 return -ENODEV; 1214 } 1215 1216 dbg("%s - HARDWARE RESET", __func__); 1217 1218 /* Reset UMP -- Back to BOOT MODE */ 1219 status = ti_vsend_sync(serial->serial->dev, 1220 UMPC_HARDWARE_RESET, 1221 0, 0, NULL, 0); 1222 1223 dbg("%s - HARDWARE RESET return %d", 1224 __func__, status); 1225 1226 /* return an error on purpose. */ 1227 kfree(record); 1228 kfree(firmware_version); 1229 kfree(rom_desc); 1230 kfree(ti_manuf_desc); 1231 return -ENODEV; 1232 } 1233 kfree(firmware_version); 1234 } 1235 /* Search for type 0xF2 record (firmware blank record) */ 1236 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1237#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1238 sizeof(struct ti_i2c_firmware_rec)) 1239 __u8 *header; 1240 __u8 *vheader; 1241 1242 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1243 if (!header) { 1244 dev_err(dev, "%s - out of memory.\n", __func__); 1245 kfree(rom_desc); 1246 kfree(ti_manuf_desc); 1247 return -ENOMEM; 1248 } 1249 1250 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1251 if (!vheader) { 1252 dev_err(dev, "%s - out of memory.\n", __func__); 1253 kfree(header); 1254 kfree(rom_desc); 1255 kfree(ti_manuf_desc); 1256 return -ENOMEM; 1257 } 1258 1259 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", 1260 __func__); 1261 1262 /* 1263 * In order to update the I2C firmware we must change 1264 * the type 2 record to type 0xF2. This will force the 1265 * UMP to come up in Boot Mode. Then while in boot 1266 * mode, the driver will download the latest firmware 1267 * (padded to 15.5k) into the UMP ram. Finally when the 1268 * device comes back up in download mode the driver 1269 * will cause the new firmware to be copied from the 1270 * UMP Ram to I2C and the firmware will update the 1271 * record type from 0xf2 to 0x02. 1272 */ 1273 status = build_i2c_fw_hdr(header, dev); 1274 if (status) { 1275 kfree(vheader); 1276 kfree(header); 1277 kfree(rom_desc); 1278 kfree(ti_manuf_desc); 1279 return -EINVAL; 1280 } 1281 1282 /* Update I2C with type 0xf2 record with correct 1283 size and checksum */ 1284 status = write_rom(serial, 1285 start_address, 1286 HEADER_SIZE, 1287 header); 1288 if (status) { 1289 kfree(vheader); 1290 kfree(header); 1291 kfree(rom_desc); 1292 kfree(ti_manuf_desc); 1293 return -EINVAL; 1294 } 1295 1296 /* verify the write -- must do this in order for 1297 write to complete before we do the hardware reset */ 1298 status = read_rom(serial, start_address, 1299 HEADER_SIZE, vheader); 1300 1301 if (status) { 1302 dbg("%s - can't read header back", __func__); 1303 kfree(vheader); 1304 kfree(header); 1305 kfree(rom_desc); 1306 kfree(ti_manuf_desc); 1307 return status; 1308 } 1309 if (memcmp(vheader, header, HEADER_SIZE)) { 1310 dbg("%s - write download record failed", 1311 __func__); 1312 kfree(vheader); 1313 kfree(header); 1314 kfree(rom_desc); 1315 kfree(ti_manuf_desc); 1316 return -EINVAL; 1317 } 1318 1319 kfree(vheader); 1320 kfree(header); 1321 1322 dbg("%s - Start firmware update", __func__); 1323 1324 /* Tell firmware to copy download image into I2C */ 1325 status = ti_vsend_sync(serial->serial->dev, 1326 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1327 1328 dbg("%s - Update complete 0x%x", __func__, status); 1329 if (status) { 1330 dev_err(dev, 1331 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1332 __func__); 1333 kfree(rom_desc); 1334 kfree(ti_manuf_desc); 1335 return status; 1336 } 1337 } 1338 1339 // The device is running the download code 1340 kfree(rom_desc); 1341 kfree(ti_manuf_desc); 1342 return 0; 1343 } 1344 1345 /********************************************************************/ 1346 /* Boot Mode */ 1347 /********************************************************************/ 1348 dbg("%s - RUNNING IN BOOT MODE", __func__); 1349 1350 /* Configure the TI device so we can use the BULK pipes for download */ 1351 status = config_boot_dev(serial->serial->dev); 1352 if (status) 1353 return status; 1354 1355 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1356 != USB_VENDOR_ID_ION) { 1357 dbg("%s - VID = 0x%x", __func__, 1358 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1359 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1360 goto stayinbootmode; 1361 } 1362 1363 /* We have an ION device (I2c Must be programmed) 1364 Determine I2C image type */ 1365 if (i2c_type_bootmode(serial)) 1366 goto stayinbootmode; 1367 1368 /* Check for ION Vendor ID and that the I2C is valid */ 1369 if (!check_i2c_image(serial)) { 1370 struct ti_i2c_image_header *header; 1371 int i; 1372 __u8 cs = 0; 1373 __u8 *buffer; 1374 int buffer_size; 1375 int err; 1376 const struct firmware *fw; 1377 const char *fw_name = "edgeport/down3.bin"; 1378 1379 /* Validate Hardware version number 1380 * Read Manufacturing Descriptor from TI Based Edgeport 1381 */ 1382 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1383 if (!ti_manuf_desc) { 1384 dev_err(dev, "%s - out of memory.\n", __func__); 1385 return -ENOMEM; 1386 } 1387 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1388 if (status) { 1389 kfree(ti_manuf_desc); 1390 goto stayinbootmode; 1391 } 1392 1393 /* Check for version 2 */ 1394 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1395 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1396 __func__, ti_cpu_rev(ti_manuf_desc)); 1397 kfree(ti_manuf_desc); 1398 goto stayinbootmode; 1399 } 1400 1401 kfree(ti_manuf_desc); 1402 1403 /* 1404 * In order to update the I2C firmware we must change the type 1405 * 2 record to type 0xF2. This will force the UMP to come up 1406 * in Boot Mode. Then while in boot mode, the driver will 1407 * download the latest firmware (padded to 15.5k) into the 1408 * UMP ram. Finally when the device comes back up in download 1409 * mode the driver will cause the new firmware to be copied 1410 * from the UMP Ram to I2C and the firmware will update the 1411 * record type from 0xf2 to 0x02. 1412 * 1413 * Do we really have to copy the whole firmware image, 1414 * or could we do this in place! 1415 */ 1416 1417 /* Allocate a 15.5k buffer + 3 byte header */ 1418 buffer_size = (((1024 * 16) - 512) + 1419 sizeof(struct ti_i2c_image_header)); 1420 buffer = kmalloc(buffer_size, GFP_KERNEL); 1421 if (!buffer) { 1422 dev_err(dev, "%s - out of memory\n", __func__); 1423 return -ENOMEM; 1424 } 1425 1426 /* Initialize the buffer to 0xff (pad the buffer) */ 1427 memset(buffer, 0xff, buffer_size); 1428 1429 err = request_firmware(&fw, fw_name, dev); 1430 if (err) { 1431 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 1432 fw_name, err); 1433 kfree(buffer); 1434 return err; 1435 } 1436 memcpy(buffer, &fw->data[4], fw->size - 4); 1437 release_firmware(fw); 1438 1439 for (i = sizeof(struct ti_i2c_image_header); 1440 i < buffer_size; i++) { 1441 cs = (__u8)(cs + buffer[i]); 1442 } 1443 1444 header = (struct ti_i2c_image_header *)buffer; 1445 1446 /* update length and checksum after padding */ 1447 header->Length = cpu_to_le16((__u16)(buffer_size - 1448 sizeof(struct ti_i2c_image_header))); 1449 header->CheckSum = cs; 1450 1451 /* Download the operational code */ 1452 dbg("%s - Downloading operational code image (TI UMP)", 1453 __func__); 1454 status = download_code(serial, buffer, buffer_size); 1455 1456 kfree(buffer); 1457 1458 if (status) { 1459 dbg("%s - Error downloading operational code image", 1460 __func__); 1461 return status; 1462 } 1463 1464 /* Device will reboot */ 1465 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1466 1467 dbg("%s - Download successful -- Device rebooting...", 1468 __func__); 1469 1470 /* return an error on purpose */ 1471 return -ENODEV; 1472 } 1473 1474stayinbootmode: 1475 /* Eprom is invalid or blank stay in boot mode */ 1476 dbg("%s - STAYING IN BOOT MODE", __func__); 1477 serial->product_info.TiMode = TI_MODE_BOOT; 1478 1479 return 0; 1480} 1481 1482 1483static int ti_do_config(struct edgeport_port *port, int feature, int on) 1484{ 1485 int port_number = port->port->number - port->port->serial->minor; 1486 on = !!on; /* 1 or 0 not bitmask */ 1487 return send_cmd(port->port->serial->dev, 1488 feature, (__u8)(UMPM_UART1_PORT + port_number), 1489 on, NULL, 0); 1490} 1491 1492 1493static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1494{ 1495 int status = 0; 1496 1497 dbg("%s - %x", __func__, mcr); 1498 1499 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1500 if (status) 1501 return status; 1502 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1503 if (status) 1504 return status; 1505 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1506} 1507 1508/* Convert TI LSR to standard UART flags */ 1509static __u8 map_line_status(__u8 ti_lsr) 1510{ 1511 __u8 lsr = 0; 1512 1513#define MAP_FLAG(flagUmp, flagUart) \ 1514 if (ti_lsr & flagUmp) \ 1515 lsr |= flagUart; 1516 1517 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1518 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1519 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1520 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1521 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1522 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1523 1524#undef MAP_FLAG 1525 1526 return lsr; 1527} 1528 1529static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1530{ 1531 struct async_icount *icount; 1532 struct tty_struct *tty; 1533 1534 dbg("%s - %02x", __func__, msr); 1535 1536 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1537 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1538 icount = &edge_port->icount; 1539 1540 /* update input line counters */ 1541 if (msr & EDGEPORT_MSR_DELTA_CTS) 1542 icount->cts++; 1543 if (msr & EDGEPORT_MSR_DELTA_DSR) 1544 icount->dsr++; 1545 if (msr & EDGEPORT_MSR_DELTA_CD) 1546 icount->dcd++; 1547 if (msr & EDGEPORT_MSR_DELTA_RI) 1548 icount->rng++; 1549 wake_up_interruptible(&edge_port->delta_msr_wait); 1550 } 1551 1552 /* Save the new modem status */ 1553 edge_port->shadow_msr = msr & 0xf0; 1554 1555 tty = tty_port_tty_get(&edge_port->port->port); 1556 /* handle CTS flow control */ 1557 if (tty && C_CRTSCTS(tty)) { 1558 if (msr & EDGEPORT_MSR_CTS) { 1559 tty->hw_stopped = 0; 1560 tty_wakeup(tty); 1561 } else { 1562 tty->hw_stopped = 1; 1563 } 1564 } 1565 tty_kref_put(tty); 1566} 1567 1568static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1569 __u8 lsr, __u8 data) 1570{ 1571 struct async_icount *icount; 1572 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1573 LSR_FRM_ERR | LSR_BREAK)); 1574 struct tty_struct *tty; 1575 1576 dbg("%s - %02x", __func__, new_lsr); 1577 1578 edge_port->shadow_lsr = lsr; 1579 1580 if (new_lsr & LSR_BREAK) 1581 /* 1582 * Parity and Framing errors only count if they 1583 * occur exclusive of a break being received. 1584 */ 1585 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1586 1587 /* Place LSR data byte into Rx buffer */ 1588 if (lsr_data) { 1589 tty = tty_port_tty_get(&edge_port->port->port); 1590 if (tty) { 1591 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1592 tty_kref_put(tty); 1593 } 1594 } 1595 1596 /* update input line counters */ 1597 icount = &edge_port->icount; 1598 if (new_lsr & LSR_BREAK) 1599 icount->brk++; 1600 if (new_lsr & LSR_OVER_ERR) 1601 icount->overrun++; 1602 if (new_lsr & LSR_PAR_ERR) 1603 icount->parity++; 1604 if (new_lsr & LSR_FRM_ERR) 1605 icount->frame++; 1606} 1607 1608 1609static void edge_interrupt_callback(struct urb *urb) 1610{ 1611 struct edgeport_serial *edge_serial = urb->context; 1612 struct usb_serial_port *port; 1613 struct edgeport_port *edge_port; 1614 unsigned char *data = urb->transfer_buffer; 1615 int length = urb->actual_length; 1616 int port_number; 1617 int function; 1618 int retval; 1619 __u8 lsr; 1620 __u8 msr; 1621 int status = urb->status; 1622 1623 dbg("%s", __func__); 1624 1625 switch (status) { 1626 case 0: 1627 /* success */ 1628 break; 1629 case -ECONNRESET: 1630 case -ENOENT: 1631 case -ESHUTDOWN: 1632 /* this urb is terminated, clean up */ 1633 dbg("%s - urb shutting down with status: %d", 1634 __func__, status); 1635 return; 1636 default: 1637 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1638 "%d\n", __func__, status); 1639 goto exit; 1640 } 1641 1642 if (!length) { 1643 dbg("%s - no data in urb", __func__); 1644 goto exit; 1645 } 1646 1647 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, 1648 __func__, length, data); 1649 1650 if (length != 2) { 1651 dbg("%s - expecting packet of size 2, got %d", 1652 __func__, length); 1653 goto exit; 1654 } 1655 1656 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1657 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1658 dbg("%s - port_number %d, function %d, info 0x%x", 1659 __func__, port_number, function, data[1]); 1660 port = edge_serial->serial->port[port_number]; 1661 edge_port = usb_get_serial_port_data(port); 1662 if (!edge_port) { 1663 dbg("%s - edge_port not found", __func__); 1664 return; 1665 } 1666 switch (function) { 1667 case TIUMP_INTERRUPT_CODE_LSR: 1668 lsr = map_line_status(data[1]); 1669 if (lsr & UMP_UART_LSR_DATA_MASK) { 1670 /* Save the LSR event for bulk read 1671 completion routine */ 1672 dbg("%s - LSR Event Port %u LSR Status = %02x", 1673 __func__, port_number, lsr); 1674 edge_port->lsr_event = 1; 1675 edge_port->lsr_mask = lsr; 1676 } else { 1677 dbg("%s - ===== Port %d LSR Status = %02x ======", 1678 __func__, port_number, lsr); 1679 handle_new_lsr(edge_port, 0, lsr, 0); 1680 } 1681 break; 1682 1683 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1684 /* Copy MSR from UMP */ 1685 msr = data[1]; 1686 dbg("%s - ===== Port %u MSR Status = %02x ======", 1687 __func__, port_number, msr); 1688 handle_new_msr(edge_port, msr); 1689 break; 1690 1691 default: 1692 dev_err(&urb->dev->dev, 1693 "%s - Unknown Interrupt code from UMP %x\n", 1694 __func__, data[1]); 1695 break; 1696 1697 } 1698 1699exit: 1700 retval = usb_submit_urb(urb, GFP_ATOMIC); 1701 if (retval) 1702 dev_err(&urb->dev->dev, 1703 "%s - usb_submit_urb failed with result %d\n", 1704 __func__, retval); 1705} 1706 1707static void edge_bulk_in_callback(struct urb *urb) 1708{ 1709 struct edgeport_port *edge_port = urb->context; 1710 unsigned char *data = urb->transfer_buffer; 1711 struct tty_struct *tty; 1712 int retval = 0; 1713 int port_number; 1714 int status = urb->status; 1715 1716 dbg("%s", __func__); 1717 1718 switch (status) { 1719 case 0: 1720 /* success */ 1721 break; 1722 case -ECONNRESET: 1723 case -ENOENT: 1724 case -ESHUTDOWN: 1725 /* this urb is terminated, clean up */ 1726 dbg("%s - urb shutting down with status: %d", 1727 __func__, status); 1728 return; 1729 default: 1730 dev_err(&urb->dev->dev, 1731 "%s - nonzero read bulk status received: %d\n", 1732 __func__, status); 1733 } 1734 1735 if (status == -EPIPE) 1736 goto exit; 1737 1738 if (status) { 1739 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1740 return; 1741 } 1742 1743 port_number = edge_port->port->number - edge_port->port->serial->minor; 1744 1745 if (edge_port->lsr_event) { 1746 edge_port->lsr_event = 0; 1747 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", 1748 __func__, port_number, edge_port->lsr_mask, *data); 1749 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1750 /* Adjust buffer length/pointer */ 1751 --urb->actual_length; 1752 ++data; 1753 } 1754 1755 tty = tty_port_tty_get(&edge_port->port->port); 1756 if (tty && urb->actual_length) { 1757 usb_serial_debug_data(debug, &edge_port->port->dev, 1758 __func__, urb->actual_length, data); 1759 if (edge_port->close_pending) 1760 dbg("%s - close pending, dropping data on the floor", 1761 __func__); 1762 else 1763 edge_tty_recv(&edge_port->port->dev, tty, data, 1764 urb->actual_length); 1765 edge_port->icount.rx += urb->actual_length; 1766 } 1767 tty_kref_put(tty); 1768 1769exit: 1770 /* continue read unless stopped */ 1771 spin_lock(&edge_port->ep_lock); 1772 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1773 retval = usb_submit_urb(urb, GFP_ATOMIC); 1774 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1775 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1776 1777 spin_unlock(&edge_port->ep_lock); 1778 if (retval) 1779 dev_err(&urb->dev->dev, 1780 "%s - usb_submit_urb failed with result %d\n", 1781 __func__, retval); 1782} 1783 1784static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1785 unsigned char *data, int length) 1786{ 1787 int queued; 1788 1789 queued = tty_insert_flip_string(tty, data, length); 1790 if (queued < length) 1791 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1792 __func__, length - queued); 1793 tty_flip_buffer_push(tty); 1794} 1795 1796static void edge_bulk_out_callback(struct urb *urb) 1797{ 1798 struct usb_serial_port *port = urb->context; 1799 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1800 int status = urb->status; 1801 struct tty_struct *tty; 1802 1803 dbg("%s - port %d", __func__, port->number); 1804 1805 edge_port->ep_write_urb_in_use = 0; 1806 1807 switch (status) { 1808 case 0: 1809 /* success */ 1810 break; 1811 case -ECONNRESET: 1812 case -ENOENT: 1813 case -ESHUTDOWN: 1814 /* this urb is terminated, clean up */ 1815 dbg("%s - urb shutting down with status: %d", 1816 __func__, status); 1817 return; 1818 default: 1819 dev_err_console(port, "%s - nonzero write bulk status " 1820 "received: %d\n", __func__, status); 1821 } 1822 1823 /* send any buffered data */ 1824 tty = tty_port_tty_get(&port->port); 1825 edge_send(tty); 1826 tty_kref_put(tty); 1827} 1828 1829static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1830{ 1831 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1832 struct edgeport_serial *edge_serial; 1833 struct usb_device *dev; 1834 struct urb *urb; 1835 int port_number; 1836 int status; 1837 u16 open_settings; 1838 u8 transaction_timeout; 1839 1840 dbg("%s - port %d", __func__, port->number); 1841 1842 if (edge_port == NULL) 1843 return -ENODEV; 1844 1845 port_number = port->number - port->serial->minor; 1846 switch (port_number) { 1847 case 0: 1848 edge_port->uart_base = UMPMEM_BASE_UART1; 1849 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1850 break; 1851 case 1: 1852 edge_port->uart_base = UMPMEM_BASE_UART2; 1853 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1854 break; 1855 default: 1856 dev_err(&port->dev, "Unknown port number!!!\n"); 1857 return -ENODEV; 1858 } 1859 1860 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", 1861 __func__, port_number, edge_port->uart_base, 1862 edge_port->dma_address); 1863 1864 dev = port->serial->dev; 1865 1866 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1867 init_waitqueue_head(&edge_port->delta_msr_wait); 1868 1869 /* turn off loopback */ 1870 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1871 if (status) { 1872 dev_err(&port->dev, 1873 "%s - cannot send clear loopback command, %d\n", 1874 __func__, status); 1875 return status; 1876 } 1877 1878 /* set up the port settings */ 1879 if (tty) 1880 edge_set_termios(tty, port, tty->termios); 1881 1882 /* open up the port */ 1883 1884 /* milliseconds to timeout for DMA transfer */ 1885 transaction_timeout = 2; 1886 1887 edge_port->ump_read_timeout = 1888 max(20, ((transaction_timeout * 3) / 2)); 1889 1890 /* milliseconds to timeout for DMA transfer */ 1891 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1892 UMP_PIPE_TRANS_TIMEOUT_ENA | 1893 (transaction_timeout << 2)); 1894 1895 dbg("%s - Sending UMPC_OPEN_PORT", __func__); 1896 1897 /* Tell TI to open and start the port */ 1898 status = send_cmd(dev, UMPC_OPEN_PORT, 1899 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1900 if (status) { 1901 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1902 __func__, status); 1903 return status; 1904 } 1905 1906 /* Start the DMA? */ 1907 status = send_cmd(dev, UMPC_START_PORT, 1908 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1909 if (status) { 1910 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1911 __func__, status); 1912 return status; 1913 } 1914 1915 /* Clear TX and RX buffers in UMP */ 1916 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1917 if (status) { 1918 dev_err(&port->dev, 1919 "%s - cannot send clear buffers command, %d\n", 1920 __func__, status); 1921 return status; 1922 } 1923 1924 /* Read Initial MSR */ 1925 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1926 (__u16)(UMPM_UART1_PORT + port_number), 1927 &edge_port->shadow_msr, 1); 1928 if (status) { 1929 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1930 __func__, status); 1931 return status; 1932 } 1933 1934 dbg("ShadowMSR 0x%X", edge_port->shadow_msr); 1935 1936 /* Set Initial MCR */ 1937 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1938 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); 1939 1940 edge_serial = edge_port->edge_serial; 1941 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1942 return -ERESTARTSYS; 1943 if (edge_serial->num_ports_open == 0) { 1944 /* we are the first port to open, post the interrupt urb */ 1945 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1946 if (!urb) { 1947 dev_err(&port->dev, 1948 "%s - no interrupt urb present, exiting\n", 1949 __func__); 1950 status = -EINVAL; 1951 goto release_es_lock; 1952 } 1953 urb->context = edge_serial; 1954 status = usb_submit_urb(urb, GFP_KERNEL); 1955 if (status) { 1956 dev_err(&port->dev, 1957 "%s - usb_submit_urb failed with value %d\n", 1958 __func__, status); 1959 goto release_es_lock; 1960 } 1961 } 1962 1963 /* 1964 * reset the data toggle on the bulk endpoints to work around bug in 1965 * host controllers where things get out of sync some times 1966 */ 1967 usb_clear_halt(dev, port->write_urb->pipe); 1968 usb_clear_halt(dev, port->read_urb->pipe); 1969 1970 /* start up our bulk read urb */ 1971 urb = port->read_urb; 1972 if (!urb) { 1973 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1974 __func__); 1975 status = -EINVAL; 1976 goto unlink_int_urb; 1977 } 1978 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1979 urb->context = edge_port; 1980 status = usb_submit_urb(urb, GFP_KERNEL); 1981 if (status) { 1982 dev_err(&port->dev, 1983 "%s - read bulk usb_submit_urb failed with value %d\n", 1984 __func__, status); 1985 goto unlink_int_urb; 1986 } 1987 1988 ++edge_serial->num_ports_open; 1989 1990 dbg("%s - exited", __func__); 1991 1992 goto release_es_lock; 1993 1994unlink_int_urb: 1995 if (edge_port->edge_serial->num_ports_open == 0) 1996 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1997release_es_lock: 1998 mutex_unlock(&edge_serial->es_lock); 1999 return status; 2000} 2001 2002static void edge_close(struct usb_serial_port *port) 2003{ 2004 struct edgeport_serial *edge_serial; 2005 struct edgeport_port *edge_port; 2006 int port_number; 2007 int status; 2008 2009 dbg("%s - port %d", __func__, port->number); 2010 2011 edge_serial = usb_get_serial_data(port->serial); 2012 edge_port = usb_get_serial_port_data(port); 2013 if (edge_serial == NULL || edge_port == NULL) 2014 return; 2015 2016 /* The bulkreadcompletion routine will check 2017 * this flag and dump add read data */ 2018 edge_port->close_pending = 1; 2019 2020 /* chase the port close and flush */ 2021 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 2022 2023 usb_kill_urb(port->read_urb); 2024 usb_kill_urb(port->write_urb); 2025 edge_port->ep_write_urb_in_use = 0; 2026 2027 /* assuming we can still talk to the device, 2028 * send a close port command to it */ 2029 dbg("%s - send umpc_close_port", __func__); 2030 port_number = port->number - port->serial->minor; 2031 status = send_cmd(port->serial->dev, 2032 UMPC_CLOSE_PORT, 2033 (__u8)(UMPM_UART1_PORT + port_number), 2034 0, 2035 NULL, 2036 0); 2037 mutex_lock(&edge_serial->es_lock); 2038 --edge_port->edge_serial->num_ports_open; 2039 if (edge_port->edge_serial->num_ports_open <= 0) { 2040 /* last port is now closed, let's shut down our interrupt urb */ 2041 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2042 edge_port->edge_serial->num_ports_open = 0; 2043 } 2044 mutex_unlock(&edge_serial->es_lock); 2045 edge_port->close_pending = 0; 2046 2047 dbg("%s - exited", __func__); 2048} 2049 2050static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2051 const unsigned char *data, int count) 2052{ 2053 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2054 2055 dbg("%s - port %d", __func__, port->number); 2056 2057 if (count == 0) { 2058 dbg("%s - write request of 0 bytes", __func__); 2059 return 0; 2060 } 2061 2062 if (edge_port == NULL) 2063 return -ENODEV; 2064 if (edge_port->close_pending == 1) 2065 return -ENODEV; 2066 2067 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2068 &edge_port->ep_lock); 2069 edge_send(tty); 2070 2071 return count; 2072} 2073 2074static void edge_send(struct tty_struct *tty) 2075{ 2076 struct usb_serial_port *port = tty->driver_data; 2077 int count, result; 2078 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2079 unsigned long flags; 2080 2081 2082 dbg("%s - port %d", __func__, port->number); 2083 2084 spin_lock_irqsave(&edge_port->ep_lock, flags); 2085 2086 if (edge_port->ep_write_urb_in_use) { 2087 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2088 return; 2089 } 2090 2091 count = kfifo_out(&edge_port->write_fifo, 2092 port->write_urb->transfer_buffer, 2093 port->bulk_out_size); 2094 2095 if (count == 0) { 2096 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2097 return; 2098 } 2099 2100 edge_port->ep_write_urb_in_use = 1; 2101 2102 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2103 2104 usb_serial_debug_data(debug, &port->dev, __func__, count, 2105 port->write_urb->transfer_buffer); 2106 2107 /* set up our urb */ 2108 port->write_urb->transfer_buffer_length = count; 2109 2110 /* send the data out the bulk port */ 2111 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2112 if (result) { 2113 dev_err_console(port, 2114 "%s - failed submitting write urb, error %d\n", 2115 __func__, result); 2116 edge_port->ep_write_urb_in_use = 0; 2117 /* TODO: reschedule edge_send */ 2118 } else 2119 edge_port->icount.tx += count; 2120 2121 /* wakeup any process waiting for writes to complete */ 2122 /* there is now more room in the buffer for new writes */ 2123 if (tty) 2124 tty_wakeup(tty); 2125} 2126 2127static int edge_write_room(struct tty_struct *tty) 2128{ 2129 struct usb_serial_port *port = tty->driver_data; 2130 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2131 int room = 0; 2132 unsigned long flags; 2133 2134 dbg("%s - port %d", __func__, port->number); 2135 2136 if (edge_port == NULL) 2137 return 0; 2138 if (edge_port->close_pending == 1) 2139 return 0; 2140 2141 spin_lock_irqsave(&edge_port->ep_lock, flags); 2142 room = kfifo_avail(&edge_port->write_fifo); 2143 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2144 2145 dbg("%s - returns %d", __func__, room); 2146 return room; 2147} 2148 2149static int edge_chars_in_buffer(struct tty_struct *tty) 2150{ 2151 struct usb_serial_port *port = tty->driver_data; 2152 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2153 int chars = 0; 2154 unsigned long flags; 2155 2156 dbg("%s - port %d", __func__, port->number); 2157 2158 if (edge_port == NULL) 2159 return 0; 2160 if (edge_port->close_pending == 1) 2161 return 0; 2162 2163 spin_lock_irqsave(&edge_port->ep_lock, flags); 2164 chars = kfifo_len(&edge_port->write_fifo); 2165 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2166 2167 dbg("%s - returns %d", __func__, chars); 2168 return chars; 2169} 2170 2171static void edge_throttle(struct tty_struct *tty) 2172{ 2173 struct usb_serial_port *port = tty->driver_data; 2174 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2175 int status; 2176 2177 dbg("%s - port %d", __func__, port->number); 2178 2179 if (edge_port == NULL) 2180 return; 2181 2182 /* if we are implementing XON/XOFF, send the stop character */ 2183 if (I_IXOFF(tty)) { 2184 unsigned char stop_char = STOP_CHAR(tty); 2185 status = edge_write(tty, port, &stop_char, 1); 2186 if (status <= 0) { 2187 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2188 } 2189 } 2190 2191 /* if we are implementing RTS/CTS, stop reads */ 2192 /* and the Edgeport will clear the RTS line */ 2193 if (C_CRTSCTS(tty)) 2194 stop_read(edge_port); 2195 2196} 2197 2198static void edge_unthrottle(struct tty_struct *tty) 2199{ 2200 struct usb_serial_port *port = tty->driver_data; 2201 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2202 int status; 2203 2204 dbg("%s - port %d", __func__, port->number); 2205 2206 if (edge_port == NULL) 2207 return; 2208 2209 /* if we are implementing XON/XOFF, send the start character */ 2210 if (I_IXOFF(tty)) { 2211 unsigned char start_char = START_CHAR(tty); 2212 status = edge_write(tty, port, &start_char, 1); 2213 if (status <= 0) { 2214 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2215 } 2216 } 2217 /* if we are implementing RTS/CTS, restart reads */ 2218 /* are the Edgeport will assert the RTS line */ 2219 if (C_CRTSCTS(tty)) { 2220 status = restart_read(edge_port); 2221 if (status) 2222 dev_err(&port->dev, 2223 "%s - read bulk usb_submit_urb failed: %d\n", 2224 __func__, status); 2225 } 2226 2227} 2228 2229static void stop_read(struct edgeport_port *edge_port) 2230{ 2231 unsigned long flags; 2232 2233 spin_lock_irqsave(&edge_port->ep_lock, flags); 2234 2235 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2236 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2237 edge_port->shadow_mcr &= ~MCR_RTS; 2238 2239 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2240} 2241 2242static int restart_read(struct edgeport_port *edge_port) 2243{ 2244 struct urb *urb; 2245 int status = 0; 2246 unsigned long flags; 2247 2248 spin_lock_irqsave(&edge_port->ep_lock, flags); 2249 2250 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2251 urb = edge_port->port->read_urb; 2252 status = usb_submit_urb(urb, GFP_ATOMIC); 2253 } 2254 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2255 edge_port->shadow_mcr |= MCR_RTS; 2256 2257 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2258 2259 return status; 2260} 2261 2262static void change_port_settings(struct tty_struct *tty, 2263 struct edgeport_port *edge_port, struct ktermios *old_termios) 2264{ 2265 struct ump_uart_config *config; 2266 int baud; 2267 unsigned cflag; 2268 int status; 2269 int port_number = edge_port->port->number - 2270 edge_port->port->serial->minor; 2271 2272 dbg("%s - port %d", __func__, edge_port->port->number); 2273 2274 config = kmalloc (sizeof (*config), GFP_KERNEL); 2275 if (!config) { 2276 *tty->termios = *old_termios; 2277 dev_err(&edge_port->port->dev, "%s - out of memory\n", 2278 __func__); 2279 return; 2280 } 2281 2282 cflag = tty->termios->c_cflag; 2283 2284 config->wFlags = 0; 2285 2286 /* These flags must be set */ 2287 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2288 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2289 config->bUartMode = (__u8)(edge_port->bUartMode); 2290 2291 switch (cflag & CSIZE) { 2292 case CS5: 2293 config->bDataBits = UMP_UART_CHAR5BITS; 2294 dbg("%s - data bits = 5", __func__); 2295 break; 2296 case CS6: 2297 config->bDataBits = UMP_UART_CHAR6BITS; 2298 dbg("%s - data bits = 6", __func__); 2299 break; 2300 case CS7: 2301 config->bDataBits = UMP_UART_CHAR7BITS; 2302 dbg("%s - data bits = 7", __func__); 2303 break; 2304 default: 2305 case CS8: 2306 config->bDataBits = UMP_UART_CHAR8BITS; 2307 dbg("%s - data bits = 8", __func__); 2308 break; 2309 } 2310 2311 if (cflag & PARENB) { 2312 if (cflag & PARODD) { 2313 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2314 config->bParity = UMP_UART_ODDPARITY; 2315 dbg("%s - parity = odd", __func__); 2316 } else { 2317 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2318 config->bParity = UMP_UART_EVENPARITY; 2319 dbg("%s - parity = even", __func__); 2320 } 2321 } else { 2322 config->bParity = UMP_UART_NOPARITY; 2323 dbg("%s - parity = none", __func__); 2324 } 2325 2326 if (cflag & CSTOPB) { 2327 config->bStopBits = UMP_UART_STOPBIT2; 2328 dbg("%s - stop bits = 2", __func__); 2329 } else { 2330 config->bStopBits = UMP_UART_STOPBIT1; 2331 dbg("%s - stop bits = 1", __func__); 2332 } 2333 2334 /* figure out the flow control settings */ 2335 if (cflag & CRTSCTS) { 2336 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2337 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2338 dbg("%s - RTS/CTS is enabled", __func__); 2339 } else { 2340 dbg("%s - RTS/CTS is disabled", __func__); 2341 tty->hw_stopped = 0; 2342 restart_read(edge_port); 2343 } 2344 2345 /* if we are implementing XON/XOFF, set the start and stop 2346 character in the device */ 2347 config->cXon = START_CHAR(tty); 2348 config->cXoff = STOP_CHAR(tty); 2349 2350 /* if we are implementing INBOUND XON/XOFF */ 2351 if (I_IXOFF(tty)) { 2352 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2353 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2354 __func__, config->cXon, config->cXoff); 2355 } else 2356 dbg("%s - INBOUND XON/XOFF is disabled", __func__); 2357 2358 /* if we are implementing OUTBOUND XON/XOFF */ 2359 if (I_IXON(tty)) { 2360 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2361 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2362 __func__, config->cXon, config->cXoff); 2363 } else 2364 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); 2365 2366 tty->termios->c_cflag &= ~CMSPAR; 2367 2368 /* Round the baud rate */ 2369 baud = tty_get_baud_rate(tty); 2370 if (!baud) { 2371 /* pick a default, any default... */ 2372 baud = 9600; 2373 } else 2374 tty_encode_baud_rate(tty, baud, baud); 2375 2376 edge_port->baud_rate = baud; 2377 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2378 2379 /* FIXME: Recompute actual baud from divisor here */ 2380 2381 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, 2382 config->wBaudRate); 2383 2384 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); 2385 dbg("wFlags: 0x%x", config->wFlags); 2386 dbg("bDataBits: %d", config->bDataBits); 2387 dbg("bParity: %d", config->bParity); 2388 dbg("bStopBits: %d", config->bStopBits); 2389 dbg("cXon: %d", config->cXon); 2390 dbg("cXoff: %d", config->cXoff); 2391 dbg("bUartMode: %d", config->bUartMode); 2392 2393 /* move the word values into big endian mode */ 2394 cpu_to_be16s(&config->wFlags); 2395 cpu_to_be16s(&config->wBaudRate); 2396 2397 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2398 (__u8)(UMPM_UART1_PORT + port_number), 2399 0, (__u8 *)config, sizeof(*config)); 2400 if (status) 2401 dbg("%s - error %d when trying to write config to device", 2402 __func__, status); 2403 kfree(config); 2404} 2405 2406static void edge_set_termios(struct tty_struct *tty, 2407 struct usb_serial_port *port, struct ktermios *old_termios) 2408{ 2409 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2410 unsigned int cflag; 2411 2412 cflag = tty->termios->c_cflag; 2413 2414 dbg("%s - clfag %08x iflag %08x", __func__, 2415 tty->termios->c_cflag, tty->termios->c_iflag); 2416 dbg("%s - old clfag %08x old iflag %08x", __func__, 2417 old_termios->c_cflag, old_termios->c_iflag); 2418 dbg("%s - port %d", __func__, port->number); 2419 2420 if (edge_port == NULL) 2421 return; 2422 /* change the port settings to the new ones specified */ 2423 change_port_settings(tty, edge_port, old_termios); 2424} 2425 2426static int edge_tiocmset(struct tty_struct *tty, 2427 unsigned int set, unsigned int clear) 2428{ 2429 struct usb_serial_port *port = tty->driver_data; 2430 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2431 unsigned int mcr; 2432 unsigned long flags; 2433 2434 dbg("%s - port %d", __func__, port->number); 2435 2436 spin_lock_irqsave(&edge_port->ep_lock, flags); 2437 mcr = edge_port->shadow_mcr; 2438 if (set & TIOCM_RTS) 2439 mcr |= MCR_RTS; 2440 if (set & TIOCM_DTR) 2441 mcr |= MCR_DTR; 2442 if (set & TIOCM_LOOP) 2443 mcr |= MCR_LOOPBACK; 2444 2445 if (clear & TIOCM_RTS) 2446 mcr &= ~MCR_RTS; 2447 if (clear & TIOCM_DTR) 2448 mcr &= ~MCR_DTR; 2449 if (clear & TIOCM_LOOP) 2450 mcr &= ~MCR_LOOPBACK; 2451 2452 edge_port->shadow_mcr = mcr; 2453 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2454 2455 restore_mcr(edge_port, mcr); 2456 return 0; 2457} 2458 2459static int edge_tiocmget(struct tty_struct *tty) 2460{ 2461 struct usb_serial_port *port = tty->driver_data; 2462 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2463 unsigned int result = 0; 2464 unsigned int msr; 2465 unsigned int mcr; 2466 unsigned long flags; 2467 2468 dbg("%s - port %d", __func__, port->number); 2469 2470 spin_lock_irqsave(&edge_port->ep_lock, flags); 2471 2472 msr = edge_port->shadow_msr; 2473 mcr = edge_port->shadow_mcr; 2474 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2475 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2476 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2477 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2478 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2479 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2480 2481 2482 dbg("%s -- %x", __func__, result); 2483 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2484 2485 return result; 2486} 2487 2488static int edge_get_icount(struct tty_struct *tty, 2489 struct serial_icounter_struct *icount) 2490{ 2491 struct usb_serial_port *port = tty->driver_data; 2492 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2493 struct async_icount *ic = &edge_port->icount; 2494 2495 icount->cts = ic->cts; 2496 icount->dsr = ic->dsr; 2497 icount->rng = ic->rng; 2498 icount->dcd = ic->dcd; 2499 icount->tx = ic->tx; 2500 icount->rx = ic->rx; 2501 icount->frame = ic->frame; 2502 icount->parity = ic->parity; 2503 icount->overrun = ic->overrun; 2504 icount->brk = ic->brk; 2505 icount->buf_overrun = ic->buf_overrun; 2506 return 0; 2507} 2508 2509static int get_serial_info(struct edgeport_port *edge_port, 2510 struct serial_struct __user *retinfo) 2511{ 2512 struct serial_struct tmp; 2513 2514 if (!retinfo) 2515 return -EFAULT; 2516 2517 memset(&tmp, 0, sizeof(tmp)); 2518 2519 tmp.type = PORT_16550A; 2520 tmp.line = edge_port->port->serial->minor; 2521 tmp.port = edge_port->port->number; 2522 tmp.irq = 0; 2523 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2524 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2525 tmp.baud_base = 9600; 2526 tmp.close_delay = 5*HZ; 2527 tmp.closing_wait = closing_wait; 2528 2529 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2530 return -EFAULT; 2531 return 0; 2532} 2533 2534static int edge_ioctl(struct tty_struct *tty, 2535 unsigned int cmd, unsigned long arg) 2536{ 2537 struct usb_serial_port *port = tty->driver_data; 2538 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2539 struct async_icount cnow; 2540 struct async_icount cprev; 2541 2542 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); 2543 2544 switch (cmd) { 2545 case TIOCGSERIAL: 2546 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); 2547 return get_serial_info(edge_port, 2548 (struct serial_struct __user *) arg); 2549 case TIOCMIWAIT: 2550 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); 2551 cprev = edge_port->icount; 2552 while (1) { 2553 interruptible_sleep_on(&edge_port->delta_msr_wait); 2554 /* see if a signal did it */ 2555 if (signal_pending(current)) 2556 return -ERESTARTSYS; 2557 cnow = edge_port->icount; 2558 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2559 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2560 return -EIO; /* no change => error */ 2561 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2562 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2563 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2564 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2565 return 0; 2566 } 2567 cprev = cnow; 2568 } 2569 /* not reached */ 2570 break; 2571 } 2572 return -ENOIOCTLCMD; 2573} 2574 2575static void edge_break(struct tty_struct *tty, int break_state) 2576{ 2577 struct usb_serial_port *port = tty->driver_data; 2578 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2579 int status; 2580 int bv = 0; /* Off */ 2581 2582 dbg("%s - state = %d", __func__, break_state); 2583 2584 /* chase the port close */ 2585 chase_port(edge_port, 0, 0); 2586 2587 if (break_state == -1) 2588 bv = 1; /* On */ 2589 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2590 if (status) 2591 dbg("%s - error %d sending break set/clear command.", 2592 __func__, status); 2593} 2594 2595static int edge_startup(struct usb_serial *serial) 2596{ 2597 struct edgeport_serial *edge_serial; 2598 struct edgeport_port *edge_port; 2599 struct usb_device *dev; 2600 int status; 2601 int i; 2602 2603 dev = serial->dev; 2604 2605 /* create our private serial structure */ 2606 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2607 if (edge_serial == NULL) { 2608 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2609 return -ENOMEM; 2610 } 2611 mutex_init(&edge_serial->es_lock); 2612 edge_serial->serial = serial; 2613 usb_set_serial_data(serial, edge_serial); 2614 2615 status = download_fw(edge_serial); 2616 if (status) { 2617 kfree(edge_serial); 2618 return status; 2619 } 2620 2621 /* set up our port private structures */ 2622 for (i = 0; i < serial->num_ports; ++i) { 2623 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); 2624 if (edge_port == NULL) { 2625 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2626 __func__); 2627 goto cleanup; 2628 } 2629 spin_lock_init(&edge_port->ep_lock); 2630 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2631 GFP_KERNEL)) { 2632 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2633 __func__); 2634 kfree(edge_port); 2635 goto cleanup; 2636 } 2637 edge_port->port = serial->port[i]; 2638 edge_port->edge_serial = edge_serial; 2639 usb_set_serial_port_data(serial->port[i], edge_port); 2640 edge_port->bUartMode = default_uart_mode; 2641 } 2642 2643 return 0; 2644 2645cleanup: 2646 for (--i; i >= 0; --i) { 2647 edge_port = usb_get_serial_port_data(serial->port[i]); 2648 kfifo_free(&edge_port->write_fifo); 2649 kfree(edge_port); 2650 usb_set_serial_port_data(serial->port[i], NULL); 2651 } 2652 kfree(edge_serial); 2653 usb_set_serial_data(serial, NULL); 2654 return -ENOMEM; 2655} 2656 2657static void edge_disconnect(struct usb_serial *serial) 2658{ 2659 dbg("%s", __func__); 2660} 2661 2662static void edge_release(struct usb_serial *serial) 2663{ 2664 int i; 2665 struct edgeport_port *edge_port; 2666 2667 dbg("%s", __func__); 2668 2669 for (i = 0; i < serial->num_ports; ++i) { 2670 edge_port = usb_get_serial_port_data(serial->port[i]); 2671 kfifo_free(&edge_port->write_fifo); 2672 kfree(edge_port); 2673 } 2674 kfree(usb_get_serial_data(serial)); 2675} 2676 2677 2678/* Sysfs Attributes */ 2679 2680static ssize_t show_uart_mode(struct device *dev, 2681 struct device_attribute *attr, char *buf) 2682{ 2683 struct usb_serial_port *port = to_usb_serial_port(dev); 2684 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2685 2686 return sprintf(buf, "%d\n", edge_port->bUartMode); 2687} 2688 2689static ssize_t store_uart_mode(struct device *dev, 2690 struct device_attribute *attr, const char *valbuf, size_t count) 2691{ 2692 struct usb_serial_port *port = to_usb_serial_port(dev); 2693 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2694 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2695 2696 dbg("%s: setting uart_mode = %d", __func__, v); 2697 2698 if (v < 256) 2699 edge_port->bUartMode = v; 2700 else 2701 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2702 2703 return count; 2704} 2705 2706static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2707 store_uart_mode); 2708 2709static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2710{ 2711 return device_create_file(&port->dev, &dev_attr_uart_mode); 2712} 2713 2714static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2715{ 2716 device_remove_file(&port->dev, &dev_attr_uart_mode); 2717 return 0; 2718} 2719 2720 2721static struct usb_serial_driver edgeport_1port_device = { 2722 .driver = { 2723 .owner = THIS_MODULE, 2724 .name = "edgeport_ti_1", 2725 }, 2726 .description = "Edgeport TI 1 port adapter", 2727 .id_table = edgeport_1port_id_table, 2728 .num_ports = 1, 2729 .open = edge_open, 2730 .close = edge_close, 2731 .throttle = edge_throttle, 2732 .unthrottle = edge_unthrottle, 2733 .attach = edge_startup, 2734 .disconnect = edge_disconnect, 2735 .release = edge_release, 2736 .port_probe = edge_create_sysfs_attrs, 2737 .port_remove = edge_remove_sysfs_attrs, 2738 .ioctl = edge_ioctl, 2739 .set_termios = edge_set_termios, 2740 .tiocmget = edge_tiocmget, 2741 .tiocmset = edge_tiocmset, 2742 .get_icount = edge_get_icount, 2743 .write = edge_write, 2744 .write_room = edge_write_room, 2745 .chars_in_buffer = edge_chars_in_buffer, 2746 .break_ctl = edge_break, 2747 .read_int_callback = edge_interrupt_callback, 2748 .read_bulk_callback = edge_bulk_in_callback, 2749 .write_bulk_callback = edge_bulk_out_callback, 2750}; 2751 2752static struct usb_serial_driver edgeport_2port_device = { 2753 .driver = { 2754 .owner = THIS_MODULE, 2755 .name = "edgeport_ti_2", 2756 }, 2757 .description = "Edgeport TI 2 port adapter", 2758 .id_table = edgeport_2port_id_table, 2759 .num_ports = 2, 2760 .open = edge_open, 2761 .close = edge_close, 2762 .throttle = edge_throttle, 2763 .unthrottle = edge_unthrottle, 2764 .attach = edge_startup, 2765 .disconnect = edge_disconnect, 2766 .release = edge_release, 2767 .port_probe = edge_create_sysfs_attrs, 2768 .port_remove = edge_remove_sysfs_attrs, 2769 .ioctl = edge_ioctl, 2770 .set_termios = edge_set_termios, 2771 .tiocmget = edge_tiocmget, 2772 .tiocmset = edge_tiocmset, 2773 .write = edge_write, 2774 .write_room = edge_write_room, 2775 .chars_in_buffer = edge_chars_in_buffer, 2776 .break_ctl = edge_break, 2777 .read_int_callback = edge_interrupt_callback, 2778 .read_bulk_callback = edge_bulk_in_callback, 2779 .write_bulk_callback = edge_bulk_out_callback, 2780}; 2781 2782static struct usb_serial_driver * const serial_drivers[] = { 2783 &edgeport_1port_device, &edgeport_2port_device, NULL 2784}; 2785 2786module_usb_serial_driver(io_driver, serial_drivers); 2787 2788MODULE_AUTHOR(DRIVER_AUTHOR); 2789MODULE_DESCRIPTION(DRIVER_DESC); 2790MODULE_LICENSE("GPL"); 2791MODULE_FIRMWARE("edgeport/down3.bin"); 2792 2793module_param(debug, bool, S_IRUGO | S_IWUSR); 2794MODULE_PARM_DESC(debug, "Debug enabled or not"); 2795 2796module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2797MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2798 2799module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2800MODULE_PARM_DESC(ignore_cpu_rev, 2801 "Ignore the cpu revision when connecting to a device"); 2802 2803module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2804MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2805