io_ti.c revision 68e24113457e437b1576670f2419b77ed0531e9e
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 unsigned char OperationalMajorVersion; 201static unsigned char OperationalMinorVersion; 202static unsigned short OperationalBuildNumber; 203 204static bool debug; 205 206static int closing_wait = EDGE_CLOSING_WAIT; 207static bool ignore_cpu_rev; 208static int default_uart_mode; /* RS232 */ 209 210static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 211 unsigned char *data, int length); 212 213static void stop_read(struct edgeport_port *edge_port); 214static int restart_read(struct edgeport_port *edge_port); 215 216static void edge_set_termios(struct tty_struct *tty, 217 struct usb_serial_port *port, struct ktermios *old_termios); 218static void edge_send(struct tty_struct *tty); 219 220/* sysfs attributes */ 221static int edge_create_sysfs_attrs(struct usb_serial_port *port); 222static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 223 224 225static int ti_vread_sync(struct usb_device *dev, __u8 request, 226 __u16 value, __u16 index, u8 *data, int size) 227{ 228 int status; 229 230 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 231 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 232 value, index, data, size, 1000); 233 if (status < 0) 234 return status; 235 if (status != size) { 236 dbg("%s - wanted to write %d, but only wrote %d", 237 __func__, size, status); 238 return -ECOMM; 239 } 240 return 0; 241} 242 243static int ti_vsend_sync(struct usb_device *dev, __u8 request, 244 __u16 value, __u16 index, u8 *data, int size) 245{ 246 int status; 247 248 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 249 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 250 value, index, data, size, 1000); 251 if (status < 0) 252 return status; 253 if (status != size) { 254 dbg("%s - wanted to write %d, but only wrote %d", 255 __func__, size, status); 256 return -ECOMM; 257 } 258 return 0; 259} 260 261static int send_cmd(struct usb_device *dev, __u8 command, 262 __u8 moduleid, __u16 value, u8 *data, 263 int size) 264{ 265 return ti_vsend_sync(dev, command, value, moduleid, data, size); 266} 267 268/* clear tx/rx buffers and fifo in TI UMP */ 269static int purge_port(struct usb_serial_port *port, __u16 mask) 270{ 271 int port_number = port->number - port->serial->minor; 272 273 dbg("%s - port %d, mask %x", __func__, port_number, mask); 274 275 return send_cmd(port->serial->dev, 276 UMPC_PURGE_PORT, 277 (__u8)(UMPM_UART1_PORT + port_number), 278 mask, 279 NULL, 280 0); 281} 282 283/** 284 * read_download_mem - Read edgeport memory from TI chip 285 * @dev: usb device pointer 286 * @start_address: Device CPU address at which to read 287 * @length: Length of above data 288 * @address_type: Can read both XDATA and I2C 289 * @buffer: pointer to input data buffer 290 */ 291static int read_download_mem(struct usb_device *dev, int start_address, 292 int length, __u8 address_type, __u8 *buffer) 293{ 294 int status = 0; 295 __u8 read_length; 296 __be16 be_start_address; 297 298 dbg("%s - @ %x for %d", __func__, start_address, length); 299 300 /* Read in blocks of 64 bytes 301 * (TI firmware can't handle more than 64 byte reads) 302 */ 303 while (length) { 304 if (length > 64) 305 read_length = 64; 306 else 307 read_length = (__u8)length; 308 309 if (read_length > 1) { 310 dbg("%s - @ %x for %d", __func__, 311 start_address, read_length); 312 } 313 be_start_address = cpu_to_be16(start_address); 314 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 315 (__u16)address_type, 316 (__force __u16)be_start_address, 317 buffer, read_length); 318 319 if (status) { 320 dbg("%s - ERROR %x", __func__, status); 321 return status; 322 } 323 324 if (read_length > 1) 325 usb_serial_debug_data(debug, &dev->dev, __func__, 326 read_length, buffer); 327 328 /* Update pointers/length */ 329 start_address += read_length; 330 buffer += read_length; 331 length -= read_length; 332 } 333 334 return status; 335} 336 337static int read_ram(struct usb_device *dev, int start_address, 338 int length, __u8 *buffer) 339{ 340 return read_download_mem(dev, start_address, length, 341 DTK_ADDR_SPACE_XDATA, buffer); 342} 343 344/* Read edgeport memory to a given block */ 345static int read_boot_mem(struct edgeport_serial *serial, 346 int start_address, int length, __u8 *buffer) 347{ 348 int status = 0; 349 int i; 350 351 for (i = 0; i < length; i++) { 352 status = ti_vread_sync(serial->serial->dev, 353 UMPC_MEMORY_READ, serial->TI_I2C_Type, 354 (__u16)(start_address+i), &buffer[i], 0x01); 355 if (status) { 356 dbg("%s - ERROR %x", __func__, status); 357 return status; 358 } 359 } 360 361 dbg("%s - start_address = %x, length = %d", 362 __func__, start_address, length); 363 usb_serial_debug_data(debug, &serial->serial->dev->dev, 364 __func__, length, buffer); 365 366 serial->TiReadI2C = 1; 367 368 return status; 369} 370 371/* Write given block to TI EPROM memory */ 372static int write_boot_mem(struct edgeport_serial *serial, 373 int start_address, int length, __u8 *buffer) 374{ 375 int status = 0; 376 int i; 377 u8 *temp; 378 379 /* Must do a read before write */ 380 if (!serial->TiReadI2C) { 381 temp = kmalloc(1, GFP_KERNEL); 382 if (!temp) { 383 dev_err(&serial->serial->dev->dev, 384 "%s - out of memory\n", __func__); 385 return -ENOMEM; 386 } 387 status = read_boot_mem(serial, 0, 1, temp); 388 kfree(temp); 389 if (status) 390 return status; 391 } 392 393 for (i = 0; i < length; ++i) { 394 status = ti_vsend_sync(serial->serial->dev, 395 UMPC_MEMORY_WRITE, buffer[i], 396 (__u16)(i + start_address), NULL, 0); 397 if (status) 398 return status; 399 } 400 401 dbg("%s - start_sddr = %x, length = %d", 402 __func__, start_address, length); 403 usb_serial_debug_data(debug, &serial->serial->dev->dev, 404 __func__, length, buffer); 405 406 return status; 407} 408 409 410/* Write edgeport I2C memory to TI chip */ 411static int write_i2c_mem(struct edgeport_serial *serial, 412 int start_address, int length, __u8 address_type, __u8 *buffer) 413{ 414 int status = 0; 415 int write_length; 416 __be16 be_start_address; 417 418 /* We can only send a maximum of 1 aligned byte page at a time */ 419 420 /* calculate the number of bytes left in the first page */ 421 write_length = EPROM_PAGE_SIZE - 422 (start_address & (EPROM_PAGE_SIZE - 1)); 423 424 if (write_length > length) 425 write_length = length; 426 427 dbg("%s - BytesInFirstPage Addr = %x, length = %d", 428 __func__, start_address, write_length); 429 usb_serial_debug_data(debug, &serial->serial->dev->dev, 430 __func__, write_length, buffer); 431 432 /* Write first page */ 433 be_start_address = cpu_to_be16(start_address); 434 status = ti_vsend_sync(serial->serial->dev, 435 UMPC_MEMORY_WRITE, (__u16)address_type, 436 (__force __u16)be_start_address, 437 buffer, write_length); 438 if (status) { 439 dbg("%s - ERROR %d", __func__, status); 440 return status; 441 } 442 443 length -= write_length; 444 start_address += write_length; 445 buffer += write_length; 446 447 /* We should be aligned now -- can write 448 max page size bytes at a time */ 449 while (length) { 450 if (length > EPROM_PAGE_SIZE) 451 write_length = EPROM_PAGE_SIZE; 452 else 453 write_length = length; 454 455 dbg("%s - Page Write Addr = %x, length = %d", 456 __func__, start_address, write_length); 457 usb_serial_debug_data(debug, &serial->serial->dev->dev, 458 __func__, write_length, buffer); 459 460 /* Write next page */ 461 be_start_address = cpu_to_be16(start_address); 462 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 463 (__u16)address_type, 464 (__force __u16)be_start_address, 465 buffer, write_length); 466 if (status) { 467 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", 468 __func__, status); 469 return status; 470 } 471 472 length -= write_length; 473 start_address += write_length; 474 buffer += write_length; 475 } 476 return status; 477} 478 479/* Examine the UMP DMA registers and LSR 480 * 481 * Check the MSBit of the X and Y DMA byte count registers. 482 * A zero in this bit indicates that the TX DMA buffers are empty 483 * then check the TX Empty bit in the UART. 484 */ 485static int tx_active(struct edgeport_port *port) 486{ 487 int status; 488 struct out_endpoint_desc_block *oedb; 489 __u8 *lsr; 490 int bytes_left = 0; 491 492 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 493 if (!oedb) { 494 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 495 return -ENOMEM; 496 } 497 498 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 499 as not all platforms can do DMA 500 from stack */ 501 if (!lsr) { 502 kfree(oedb); 503 return -ENOMEM; 504 } 505 /* Read the DMA Count Registers */ 506 status = read_ram(port->port->serial->dev, port->dma_address, 507 sizeof(*oedb), (void *)oedb); 508 if (status) 509 goto exit_is_tx_active; 510 511 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); 512 513 /* and the LSR */ 514 status = read_ram(port->port->serial->dev, 515 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 516 517 if (status) 518 goto exit_is_tx_active; 519 dbg("%s - LSR = 0x%X", __func__, *lsr); 520 521 /* If either buffer has data or we are transmitting then return TRUE */ 522 if ((oedb->XByteCount & 0x80) != 0) 523 bytes_left += 64; 524 525 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 526 bytes_left += 1; 527 528 /* We return Not Active if we get any kind of error */ 529exit_is_tx_active: 530 dbg("%s - return %d", __func__, bytes_left); 531 532 kfree(lsr); 533 kfree(oedb); 534 return bytes_left; 535} 536 537static void chase_port(struct edgeport_port *port, unsigned long timeout, 538 int flush) 539{ 540 int baud_rate; 541 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 542 struct usb_serial *serial = port->port->serial; 543 wait_queue_t wait; 544 unsigned long flags; 545 546 if (!timeout) 547 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 548 549 /* wait for data to drain from the buffer */ 550 spin_lock_irqsave(&port->ep_lock, flags); 551 init_waitqueue_entry(&wait, current); 552 add_wait_queue(&tty->write_wait, &wait); 553 for (;;) { 554 set_current_state(TASK_INTERRUPTIBLE); 555 if (kfifo_len(&port->write_fifo) == 0 556 || timeout == 0 || signal_pending(current) 557 || serial->disconnected) 558 /* disconnect */ 559 break; 560 spin_unlock_irqrestore(&port->ep_lock, flags); 561 timeout = schedule_timeout(timeout); 562 spin_lock_irqsave(&port->ep_lock, flags); 563 } 564 set_current_state(TASK_RUNNING); 565 remove_wait_queue(&tty->write_wait, &wait); 566 if (flush) 567 kfifo_reset_out(&port->write_fifo); 568 spin_unlock_irqrestore(&port->ep_lock, flags); 569 tty_kref_put(tty); 570 571 /* wait for data to drain from the device */ 572 timeout += jiffies; 573 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 574 && !serial->disconnected) { 575 /* not disconnected */ 576 if (!tx_active(port)) 577 break; 578 msleep(10); 579 } 580 581 /* disconnected */ 582 if (serial->disconnected) 583 return; 584 585 /* wait one more character time, based on baud rate */ 586 /* (tx_active doesn't seem to wait for the last byte) */ 587 baud_rate = port->baud_rate; 588 if (baud_rate == 0) 589 baud_rate = 50; 590 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 591} 592 593static int choose_config(struct usb_device *dev) 594{ 595 /* 596 * There may be multiple configurations on this device, in which case 597 * we would need to read and parse all of them to find out which one 598 * we want. However, we just support one config at this point, 599 * configuration # 1, which is Config Descriptor 0. 600 */ 601 602 dbg("%s - Number of Interfaces = %d", 603 __func__, dev->config->desc.bNumInterfaces); 604 dbg("%s - MAX Power = %d", 605 __func__, dev->config->desc.bMaxPower * 2); 606 607 if (dev->config->desc.bNumInterfaces != 1) { 608 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", 609 __func__); 610 return -ENODEV; 611 } 612 613 return 0; 614} 615 616static int read_rom(struct edgeport_serial *serial, 617 int start_address, int length, __u8 *buffer) 618{ 619 int status; 620 621 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 622 status = read_download_mem(serial->serial->dev, 623 start_address, 624 length, 625 serial->TI_I2C_Type, 626 buffer); 627 } else { 628 status = read_boot_mem(serial, start_address, length, 629 buffer); 630 } 631 return status; 632} 633 634static int write_rom(struct edgeport_serial *serial, int start_address, 635 int length, __u8 *buffer) 636{ 637 if (serial->product_info.TiMode == TI_MODE_BOOT) 638 return write_boot_mem(serial, start_address, length, 639 buffer); 640 641 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 642 return write_i2c_mem(serial, start_address, length, 643 serial->TI_I2C_Type, buffer); 644 return -EINVAL; 645} 646 647 648 649/* Read a descriptor header from I2C based on type */ 650static int get_descriptor_addr(struct edgeport_serial *serial, 651 int desc_type, struct ti_i2c_desc *rom_desc) 652{ 653 int start_address; 654 int status; 655 656 /* Search for requested descriptor in I2C */ 657 start_address = 2; 658 do { 659 status = read_rom(serial, 660 start_address, 661 sizeof(struct ti_i2c_desc), 662 (__u8 *)rom_desc); 663 if (status) 664 return 0; 665 666 if (rom_desc->Type == desc_type) 667 return start_address; 668 669 start_address = start_address + sizeof(struct ti_i2c_desc) 670 + rom_desc->Size; 671 672 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 673 674 return 0; 675} 676 677/* Validate descriptor checksum */ 678static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 679{ 680 __u16 i; 681 __u8 cs = 0; 682 683 for (i = 0; i < rom_desc->Size; i++) 684 cs = (__u8)(cs + buffer[i]); 685 686 if (cs != rom_desc->CheckSum) { 687 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 688 return -EINVAL; 689 } 690 return 0; 691} 692 693/* Make sure that the I2C image is good */ 694static int check_i2c_image(struct edgeport_serial *serial) 695{ 696 struct device *dev = &serial->serial->dev->dev; 697 int status = 0; 698 struct ti_i2c_desc *rom_desc; 699 int start_address = 2; 700 __u8 *buffer; 701 __u16 ttype; 702 703 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 704 if (!rom_desc) { 705 dev_err(dev, "%s - out of memory\n", __func__); 706 return -ENOMEM; 707 } 708 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 709 if (!buffer) { 710 dev_err(dev, "%s - out of memory when allocating buffer\n", 711 __func__); 712 kfree(rom_desc); 713 return -ENOMEM; 714 } 715 716 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 717 status = read_rom(serial, 0, 1, buffer); 718 if (status) 719 goto out; 720 721 if (*buffer != UMP5152 && *buffer != UMP3410) { 722 dev_err(dev, "%s - invalid buffer signature\n", __func__); 723 status = -ENODEV; 724 goto out; 725 } 726 727 do { 728 /* Validate the I2C */ 729 status = read_rom(serial, 730 start_address, 731 sizeof(struct ti_i2c_desc), 732 (__u8 *)rom_desc); 733 if (status) 734 break; 735 736 if ((start_address + sizeof(struct ti_i2c_desc) + 737 rom_desc->Size) > TI_MAX_I2C_SIZE) { 738 status = -ENODEV; 739 dbg("%s - structure too big, erroring out.", __func__); 740 break; 741 } 742 743 dbg("%s Type = 0x%x", __func__, rom_desc->Type); 744 745 /* Skip type 2 record */ 746 ttype = rom_desc->Type & 0x0f; 747 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 748 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 749 /* Read the descriptor data */ 750 status = read_rom(serial, start_address + 751 sizeof(struct ti_i2c_desc), 752 rom_desc->Size, buffer); 753 if (status) 754 break; 755 756 status = valid_csum(rom_desc, buffer); 757 if (status) 758 break; 759 } 760 start_address = start_address + sizeof(struct ti_i2c_desc) + 761 rom_desc->Size; 762 763 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 764 (start_address < TI_MAX_I2C_SIZE)); 765 766 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 767 (start_address > TI_MAX_I2C_SIZE)) 768 status = -ENODEV; 769 770out: 771 kfree(buffer); 772 kfree(rom_desc); 773 return status; 774} 775 776static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 777{ 778 int status; 779 int start_address; 780 struct ti_i2c_desc *rom_desc; 781 struct edge_ti_manuf_descriptor *desc; 782 783 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 784 if (!rom_desc) { 785 dev_err(&serial->serial->dev->dev, "%s - out of memory\n", 786 __func__); 787 return -ENOMEM; 788 } 789 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 790 rom_desc); 791 792 if (!start_address) { 793 dbg("%s - Edge Descriptor not found in I2C", __func__); 794 status = -ENODEV; 795 goto exit; 796 } 797 798 /* Read the descriptor data */ 799 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 800 rom_desc->Size, buffer); 801 if (status) 802 goto exit; 803 804 status = valid_csum(rom_desc, buffer); 805 806 desc = (struct edge_ti_manuf_descriptor *)buffer; 807 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); 808 dbg("%s - Version %d", __func__, desc->Version); 809 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); 810 dbg("%s - NumPorts %d", __func__, desc->NumPorts); 811 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); 812 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); 813 814exit: 815 kfree(rom_desc); 816 return status; 817} 818 819/* Build firmware header used for firmware update */ 820static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 821{ 822 __u8 *buffer; 823 int buffer_size; 824 int i; 825 int err; 826 __u8 cs = 0; 827 struct ti_i2c_desc *i2c_header; 828 struct ti_i2c_image_header *img_header; 829 struct ti_i2c_firmware_rec *firmware_rec; 830 const struct firmware *fw; 831 const char *fw_name = "edgeport/down3.bin"; 832 833 /* In order to update the I2C firmware we must change the type 2 record 834 * to type 0xF2. This will force the UMP to come up in Boot Mode. 835 * Then while in boot mode, the driver will download the latest 836 * firmware (padded to 15.5k) into the UMP ram. And finally when the 837 * device comes back up in download mode the driver will cause the new 838 * firmware to be copied from the UMP Ram to I2C and the firmware will 839 * update the record type from 0xf2 to 0x02. 840 */ 841 842 /* Allocate a 15.5k buffer + 2 bytes for version number 843 * (Firmware Record) */ 844 buffer_size = (((1024 * 16) - 512 ) + 845 sizeof(struct ti_i2c_firmware_rec)); 846 847 buffer = kmalloc(buffer_size, GFP_KERNEL); 848 if (!buffer) { 849 dev_err(dev, "%s - out of memory\n", __func__); 850 return -ENOMEM; 851 } 852 853 // Set entire image of 0xffs 854 memset(buffer, 0xff, buffer_size); 855 856 err = request_firmware(&fw, fw_name, dev); 857 if (err) { 858 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 859 fw_name, err); 860 kfree(buffer); 861 return err; 862 } 863 864 /* Save Download Version Number */ 865 OperationalMajorVersion = fw->data[0]; 866 OperationalMinorVersion = fw->data[1]; 867 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 868 869 /* Copy version number into firmware record */ 870 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 871 872 firmware_rec->Ver_Major = OperationalMajorVersion; 873 firmware_rec->Ver_Minor = OperationalMinorVersion; 874 875 /* Pointer to fw_down memory image */ 876 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 877 878 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 879 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 880 le16_to_cpu(img_header->Length)); 881 882 release_firmware(fw); 883 884 for (i=0; i < buffer_size; i++) { 885 cs = (__u8)(cs + buffer[i]); 886 } 887 888 kfree(buffer); 889 890 /* Build new header */ 891 i2c_header = (struct ti_i2c_desc *)header; 892 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 893 894 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 895 i2c_header->Size = (__u16)buffer_size; 896 i2c_header->CheckSum = cs; 897 firmware_rec->Ver_Major = OperationalMajorVersion; 898 firmware_rec->Ver_Minor = OperationalMinorVersion; 899 900 return 0; 901} 902 903/* Try to figure out what type of I2c we have */ 904static int i2c_type_bootmode(struct edgeport_serial *serial) 905{ 906 int status; 907 u8 *data; 908 909 data = kmalloc(1, GFP_KERNEL); 910 if (!data) { 911 dev_err(&serial->serial->dev->dev, 912 "%s - out of memory\n", __func__); 913 return -ENOMEM; 914 } 915 916 /* Try to read type 2 */ 917 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 918 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 919 if (status) 920 dbg("%s - read 2 status error = %d", __func__, status); 921 else 922 dbg("%s - read 2 data = 0x%x", __func__, *data); 923 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 924 dbg("%s - ROM_TYPE_II", __func__); 925 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 926 goto out; 927 } 928 929 /* Try to read type 3 */ 930 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 931 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 932 if (status) 933 dbg("%s - read 3 status error = %d", __func__, status); 934 else 935 dbg("%s - read 2 data = 0x%x", __func__, *data); 936 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 937 dbg("%s - ROM_TYPE_III", __func__); 938 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 939 goto out; 940 } 941 942 dbg("%s - Unknown", __func__); 943 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 944 status = -ENODEV; 945out: 946 kfree(data); 947 return status; 948} 949 950static int bulk_xfer(struct usb_serial *serial, void *buffer, 951 int length, int *num_sent) 952{ 953 int status; 954 955 status = usb_bulk_msg(serial->dev, 956 usb_sndbulkpipe(serial->dev, 957 serial->port[0]->bulk_out_endpointAddress), 958 buffer, length, num_sent, 1000); 959 return status; 960} 961 962/* Download given firmware image to the device (IN BOOT MODE) */ 963static int download_code(struct edgeport_serial *serial, __u8 *image, 964 int image_length) 965{ 966 int status = 0; 967 int pos; 968 int transfer; 969 int done; 970 971 /* Transfer firmware image */ 972 for (pos = 0; pos < image_length; ) { 973 /* Read the next buffer from file */ 974 transfer = image_length - pos; 975 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 976 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 977 978 /* Transfer data */ 979 status = bulk_xfer(serial->serial, &image[pos], 980 transfer, &done); 981 if (status) 982 break; 983 /* Advance buffer pointer */ 984 pos += done; 985 } 986 987 return status; 988} 989 990/* FIXME!!! */ 991static int config_boot_dev(struct usb_device *dev) 992{ 993 return 0; 994} 995 996static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 997{ 998 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 999} 1000 1001/** 1002 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 1003 * 1004 * This routine downloads the main operating code into the TI5052, using the 1005 * boot code already burned into E2PROM or ROM. 1006 */ 1007static int download_fw(struct edgeport_serial *serial) 1008{ 1009 struct device *dev = &serial->serial->dev->dev; 1010 int status = 0; 1011 int start_address; 1012 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1013 struct usb_interface_descriptor *interface; 1014 int download_cur_ver; 1015 int download_new_ver; 1016 1017 /* This routine is entered by both the BOOT mode and the Download mode 1018 * We can determine which code is running by the reading the config 1019 * descriptor and if we have only one bulk pipe it is in boot mode 1020 */ 1021 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1022 1023 /* Default to type 2 i2c */ 1024 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1025 1026 status = choose_config(serial->serial->dev); 1027 if (status) 1028 return status; 1029 1030 interface = &serial->serial->interface->cur_altsetting->desc; 1031 if (!interface) { 1032 dev_err(dev, "%s - no interface set, error!\n", __func__); 1033 return -ENODEV; 1034 } 1035 1036 /* 1037 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1038 * if we have more than one endpoint we are definitely in download 1039 * mode 1040 */ 1041 if (interface->bNumEndpoints > 1) 1042 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1043 else 1044 /* Otherwise we will remain in configuring mode */ 1045 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1046 1047 /********************************************************************/ 1048 /* Download Mode */ 1049 /********************************************************************/ 1050 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1051 struct ti_i2c_desc *rom_desc; 1052 1053 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); 1054 1055 status = check_i2c_image(serial); 1056 if (status) { 1057 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); 1058 return status; 1059 } 1060 1061 /* Validate Hardware version number 1062 * Read Manufacturing Descriptor from TI Based Edgeport 1063 */ 1064 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1065 if (!ti_manuf_desc) { 1066 dev_err(dev, "%s - out of memory.\n", __func__); 1067 return -ENOMEM; 1068 } 1069 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1070 if (status) { 1071 kfree(ti_manuf_desc); 1072 return status; 1073 } 1074 1075 /* Check version number of ION descriptor */ 1076 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1077 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1078 __func__, ti_cpu_rev(ti_manuf_desc)); 1079 kfree(ti_manuf_desc); 1080 return -EINVAL; 1081 } 1082 1083 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1084 if (!rom_desc) { 1085 dev_err(dev, "%s - out of memory.\n", __func__); 1086 kfree(ti_manuf_desc); 1087 return -ENOMEM; 1088 } 1089 1090 /* Search for type 2 record (firmware record) */ 1091 start_address = get_descriptor_addr(serial, 1092 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1093 if (start_address != 0) { 1094 struct ti_i2c_firmware_rec *firmware_version; 1095 u8 *record; 1096 1097 dbg("%s - Found Type FIRMWARE (Type 2) record", 1098 __func__); 1099 1100 firmware_version = kmalloc(sizeof(*firmware_version), 1101 GFP_KERNEL); 1102 if (!firmware_version) { 1103 dev_err(dev, "%s - out of memory.\n", __func__); 1104 kfree(rom_desc); 1105 kfree(ti_manuf_desc); 1106 return -ENOMEM; 1107 } 1108 1109 /* Validate version number 1110 * Read the descriptor data 1111 */ 1112 status = read_rom(serial, start_address + 1113 sizeof(struct ti_i2c_desc), 1114 sizeof(struct ti_i2c_firmware_rec), 1115 (__u8 *)firmware_version); 1116 if (status) { 1117 kfree(firmware_version); 1118 kfree(rom_desc); 1119 kfree(ti_manuf_desc); 1120 return status; 1121 } 1122 1123 /* Check version number of download with current 1124 version in I2c */ 1125 download_cur_ver = (firmware_version->Ver_Major << 8) + 1126 (firmware_version->Ver_Minor); 1127 download_new_ver = (OperationalMajorVersion << 8) + 1128 (OperationalMinorVersion); 1129 1130 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", 1131 __func__, 1132 firmware_version->Ver_Major, 1133 firmware_version->Ver_Minor, 1134 OperationalMajorVersion, 1135 OperationalMinorVersion); 1136 1137 /* Check if we have an old version in the I2C and 1138 update if necessary */ 1139 if (download_cur_ver < download_new_ver) { 1140 dbg("%s - Update I2C dld from %d.%d to %d.%d", 1141 __func__, 1142 firmware_version->Ver_Major, 1143 firmware_version->Ver_Minor, 1144 OperationalMajorVersion, 1145 OperationalMinorVersion); 1146 1147 record = kmalloc(1, GFP_KERNEL); 1148 if (!record) { 1149 dev_err(dev, "%s - out of memory.\n", 1150 __func__); 1151 kfree(firmware_version); 1152 kfree(rom_desc); 1153 kfree(ti_manuf_desc); 1154 return -ENOMEM; 1155 } 1156 /* In order to update the I2C firmware we must 1157 * change the type 2 record to type 0xF2. This 1158 * will force the UMP to come up in Boot Mode. 1159 * Then while in boot mode, the driver will 1160 * download the latest firmware (padded to 1161 * 15.5k) into the UMP ram. Finally when the 1162 * device comes back up in download mode the 1163 * driver will cause the new firmware to be 1164 * copied from the UMP Ram to I2C and the 1165 * firmware will update the record type from 1166 * 0xf2 to 0x02. 1167 */ 1168 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1169 1170 /* Change the I2C Firmware record type to 1171 0xf2 to trigger an update */ 1172 status = write_rom(serial, start_address, 1173 sizeof(*record), record); 1174 if (status) { 1175 kfree(record); 1176 kfree(firmware_version); 1177 kfree(rom_desc); 1178 kfree(ti_manuf_desc); 1179 return status; 1180 } 1181 1182 /* verify the write -- must do this in order 1183 * for write to complete before we do the 1184 * hardware reset 1185 */ 1186 status = read_rom(serial, 1187 start_address, 1188 sizeof(*record), 1189 record); 1190 if (status) { 1191 kfree(record); 1192 kfree(firmware_version); 1193 kfree(rom_desc); 1194 kfree(ti_manuf_desc); 1195 return status; 1196 } 1197 1198 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1199 dev_err(dev, 1200 "%s - error resetting device\n", 1201 __func__); 1202 kfree(record); 1203 kfree(firmware_version); 1204 kfree(rom_desc); 1205 kfree(ti_manuf_desc); 1206 return -ENODEV; 1207 } 1208 1209 dbg("%s - HARDWARE RESET", __func__); 1210 1211 /* Reset UMP -- Back to BOOT MODE */ 1212 status = ti_vsend_sync(serial->serial->dev, 1213 UMPC_HARDWARE_RESET, 1214 0, 0, NULL, 0); 1215 1216 dbg("%s - HARDWARE RESET return %d", 1217 __func__, status); 1218 1219 /* return an error on purpose. */ 1220 kfree(record); 1221 kfree(firmware_version); 1222 kfree(rom_desc); 1223 kfree(ti_manuf_desc); 1224 return -ENODEV; 1225 } 1226 kfree(firmware_version); 1227 } 1228 /* Search for type 0xF2 record (firmware blank record) */ 1229 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1230#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1231 sizeof(struct ti_i2c_firmware_rec)) 1232 __u8 *header; 1233 __u8 *vheader; 1234 1235 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1236 if (!header) { 1237 dev_err(dev, "%s - out of memory.\n", __func__); 1238 kfree(rom_desc); 1239 kfree(ti_manuf_desc); 1240 return -ENOMEM; 1241 } 1242 1243 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1244 if (!vheader) { 1245 dev_err(dev, "%s - out of memory.\n", __func__); 1246 kfree(header); 1247 kfree(rom_desc); 1248 kfree(ti_manuf_desc); 1249 return -ENOMEM; 1250 } 1251 1252 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", 1253 __func__); 1254 1255 /* 1256 * In order to update the I2C firmware we must change 1257 * the type 2 record to type 0xF2. This will force the 1258 * UMP to come up in Boot Mode. Then while in boot 1259 * mode, the driver will download the latest firmware 1260 * (padded to 15.5k) into the UMP ram. Finally when the 1261 * device comes back up in download mode the driver 1262 * will cause the new firmware to be copied from the 1263 * UMP Ram to I2C and the firmware will update the 1264 * record type from 0xf2 to 0x02. 1265 */ 1266 status = build_i2c_fw_hdr(header, dev); 1267 if (status) { 1268 kfree(vheader); 1269 kfree(header); 1270 kfree(rom_desc); 1271 kfree(ti_manuf_desc); 1272 return -EINVAL; 1273 } 1274 1275 /* Update I2C with type 0xf2 record with correct 1276 size and checksum */ 1277 status = write_rom(serial, 1278 start_address, 1279 HEADER_SIZE, 1280 header); 1281 if (status) { 1282 kfree(vheader); 1283 kfree(header); 1284 kfree(rom_desc); 1285 kfree(ti_manuf_desc); 1286 return -EINVAL; 1287 } 1288 1289 /* verify the write -- must do this in order for 1290 write to complete before we do the hardware reset */ 1291 status = read_rom(serial, start_address, 1292 HEADER_SIZE, vheader); 1293 1294 if (status) { 1295 dbg("%s - can't read header back", __func__); 1296 kfree(vheader); 1297 kfree(header); 1298 kfree(rom_desc); 1299 kfree(ti_manuf_desc); 1300 return status; 1301 } 1302 if (memcmp(vheader, header, HEADER_SIZE)) { 1303 dbg("%s - write download record failed", 1304 __func__); 1305 kfree(vheader); 1306 kfree(header); 1307 kfree(rom_desc); 1308 kfree(ti_manuf_desc); 1309 return -EINVAL; 1310 } 1311 1312 kfree(vheader); 1313 kfree(header); 1314 1315 dbg("%s - Start firmware update", __func__); 1316 1317 /* Tell firmware to copy download image into I2C */ 1318 status = ti_vsend_sync(serial->serial->dev, 1319 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1320 1321 dbg("%s - Update complete 0x%x", __func__, status); 1322 if (status) { 1323 dev_err(dev, 1324 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1325 __func__); 1326 kfree(rom_desc); 1327 kfree(ti_manuf_desc); 1328 return status; 1329 } 1330 } 1331 1332 // The device is running the download code 1333 kfree(rom_desc); 1334 kfree(ti_manuf_desc); 1335 return 0; 1336 } 1337 1338 /********************************************************************/ 1339 /* Boot Mode */ 1340 /********************************************************************/ 1341 dbg("%s - RUNNING IN BOOT MODE", __func__); 1342 1343 /* Configure the TI device so we can use the BULK pipes for download */ 1344 status = config_boot_dev(serial->serial->dev); 1345 if (status) 1346 return status; 1347 1348 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1349 != USB_VENDOR_ID_ION) { 1350 dbg("%s - VID = 0x%x", __func__, 1351 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1352 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1353 goto stayinbootmode; 1354 } 1355 1356 /* We have an ION device (I2c Must be programmed) 1357 Determine I2C image type */ 1358 if (i2c_type_bootmode(serial)) 1359 goto stayinbootmode; 1360 1361 /* Check for ION Vendor ID and that the I2C is valid */ 1362 if (!check_i2c_image(serial)) { 1363 struct ti_i2c_image_header *header; 1364 int i; 1365 __u8 cs = 0; 1366 __u8 *buffer; 1367 int buffer_size; 1368 int err; 1369 const struct firmware *fw; 1370 const char *fw_name = "edgeport/down3.bin"; 1371 1372 /* Validate Hardware version number 1373 * Read Manufacturing Descriptor from TI Based Edgeport 1374 */ 1375 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1376 if (!ti_manuf_desc) { 1377 dev_err(dev, "%s - out of memory.\n", __func__); 1378 return -ENOMEM; 1379 } 1380 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1381 if (status) { 1382 kfree(ti_manuf_desc); 1383 goto stayinbootmode; 1384 } 1385 1386 /* Check for version 2 */ 1387 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1388 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1389 __func__, ti_cpu_rev(ti_manuf_desc)); 1390 kfree(ti_manuf_desc); 1391 goto stayinbootmode; 1392 } 1393 1394 kfree(ti_manuf_desc); 1395 1396 /* 1397 * In order to update the I2C firmware we must change the type 1398 * 2 record to type 0xF2. This will force the UMP to come up 1399 * in Boot Mode. Then while in boot mode, the driver will 1400 * download the latest firmware (padded to 15.5k) into the 1401 * UMP ram. Finally when the device comes back up in download 1402 * mode the driver will cause the new firmware to be copied 1403 * from the UMP Ram to I2C and the firmware will update the 1404 * record type from 0xf2 to 0x02. 1405 * 1406 * Do we really have to copy the whole firmware image, 1407 * or could we do this in place! 1408 */ 1409 1410 /* Allocate a 15.5k buffer + 3 byte header */ 1411 buffer_size = (((1024 * 16) - 512) + 1412 sizeof(struct ti_i2c_image_header)); 1413 buffer = kmalloc(buffer_size, GFP_KERNEL); 1414 if (!buffer) { 1415 dev_err(dev, "%s - out of memory\n", __func__); 1416 return -ENOMEM; 1417 } 1418 1419 /* Initialize the buffer to 0xff (pad the buffer) */ 1420 memset(buffer, 0xff, buffer_size); 1421 1422 err = request_firmware(&fw, fw_name, dev); 1423 if (err) { 1424 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 1425 fw_name, err); 1426 kfree(buffer); 1427 return err; 1428 } 1429 memcpy(buffer, &fw->data[4], fw->size - 4); 1430 release_firmware(fw); 1431 1432 for (i = sizeof(struct ti_i2c_image_header); 1433 i < buffer_size; i++) { 1434 cs = (__u8)(cs + buffer[i]); 1435 } 1436 1437 header = (struct ti_i2c_image_header *)buffer; 1438 1439 /* update length and checksum after padding */ 1440 header->Length = cpu_to_le16((__u16)(buffer_size - 1441 sizeof(struct ti_i2c_image_header))); 1442 header->CheckSum = cs; 1443 1444 /* Download the operational code */ 1445 dbg("%s - Downloading operational code image (TI UMP)", 1446 __func__); 1447 status = download_code(serial, buffer, buffer_size); 1448 1449 kfree(buffer); 1450 1451 if (status) { 1452 dbg("%s - Error downloading operational code image", 1453 __func__); 1454 return status; 1455 } 1456 1457 /* Device will reboot */ 1458 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1459 1460 dbg("%s - Download successful -- Device rebooting...", 1461 __func__); 1462 1463 /* return an error on purpose */ 1464 return -ENODEV; 1465 } 1466 1467stayinbootmode: 1468 /* Eprom is invalid or blank stay in boot mode */ 1469 dbg("%s - STAYING IN BOOT MODE", __func__); 1470 serial->product_info.TiMode = TI_MODE_BOOT; 1471 1472 return 0; 1473} 1474 1475 1476static int ti_do_config(struct edgeport_port *port, int feature, int on) 1477{ 1478 int port_number = port->port->number - port->port->serial->minor; 1479 on = !!on; /* 1 or 0 not bitmask */ 1480 return send_cmd(port->port->serial->dev, 1481 feature, (__u8)(UMPM_UART1_PORT + port_number), 1482 on, NULL, 0); 1483} 1484 1485 1486static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1487{ 1488 int status = 0; 1489 1490 dbg("%s - %x", __func__, mcr); 1491 1492 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1493 if (status) 1494 return status; 1495 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1496 if (status) 1497 return status; 1498 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1499} 1500 1501/* Convert TI LSR to standard UART flags */ 1502static __u8 map_line_status(__u8 ti_lsr) 1503{ 1504 __u8 lsr = 0; 1505 1506#define MAP_FLAG(flagUmp, flagUart) \ 1507 if (ti_lsr & flagUmp) \ 1508 lsr |= flagUart; 1509 1510 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1511 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1512 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1513 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1514 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1515 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1516 1517#undef MAP_FLAG 1518 1519 return lsr; 1520} 1521 1522static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1523{ 1524 struct async_icount *icount; 1525 struct tty_struct *tty; 1526 1527 dbg("%s - %02x", __func__, msr); 1528 1529 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1530 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1531 icount = &edge_port->icount; 1532 1533 /* update input line counters */ 1534 if (msr & EDGEPORT_MSR_DELTA_CTS) 1535 icount->cts++; 1536 if (msr & EDGEPORT_MSR_DELTA_DSR) 1537 icount->dsr++; 1538 if (msr & EDGEPORT_MSR_DELTA_CD) 1539 icount->dcd++; 1540 if (msr & EDGEPORT_MSR_DELTA_RI) 1541 icount->rng++; 1542 wake_up_interruptible(&edge_port->delta_msr_wait); 1543 } 1544 1545 /* Save the new modem status */ 1546 edge_port->shadow_msr = msr & 0xf0; 1547 1548 tty = tty_port_tty_get(&edge_port->port->port); 1549 /* handle CTS flow control */ 1550 if (tty && C_CRTSCTS(tty)) { 1551 if (msr & EDGEPORT_MSR_CTS) { 1552 tty->hw_stopped = 0; 1553 tty_wakeup(tty); 1554 } else { 1555 tty->hw_stopped = 1; 1556 } 1557 } 1558 tty_kref_put(tty); 1559} 1560 1561static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1562 __u8 lsr, __u8 data) 1563{ 1564 struct async_icount *icount; 1565 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1566 LSR_FRM_ERR | LSR_BREAK)); 1567 struct tty_struct *tty; 1568 1569 dbg("%s - %02x", __func__, new_lsr); 1570 1571 edge_port->shadow_lsr = lsr; 1572 1573 if (new_lsr & LSR_BREAK) 1574 /* 1575 * Parity and Framing errors only count if they 1576 * occur exclusive of a break being received. 1577 */ 1578 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1579 1580 /* Place LSR data byte into Rx buffer */ 1581 if (lsr_data) { 1582 tty = tty_port_tty_get(&edge_port->port->port); 1583 if (tty) { 1584 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1585 tty_kref_put(tty); 1586 } 1587 } 1588 1589 /* update input line counters */ 1590 icount = &edge_port->icount; 1591 if (new_lsr & LSR_BREAK) 1592 icount->brk++; 1593 if (new_lsr & LSR_OVER_ERR) 1594 icount->overrun++; 1595 if (new_lsr & LSR_PAR_ERR) 1596 icount->parity++; 1597 if (new_lsr & LSR_FRM_ERR) 1598 icount->frame++; 1599} 1600 1601 1602static void edge_interrupt_callback(struct urb *urb) 1603{ 1604 struct edgeport_serial *edge_serial = urb->context; 1605 struct usb_serial_port *port; 1606 struct edgeport_port *edge_port; 1607 unsigned char *data = urb->transfer_buffer; 1608 int length = urb->actual_length; 1609 int port_number; 1610 int function; 1611 int retval; 1612 __u8 lsr; 1613 __u8 msr; 1614 int status = urb->status; 1615 1616 dbg("%s", __func__); 1617 1618 switch (status) { 1619 case 0: 1620 /* success */ 1621 break; 1622 case -ECONNRESET: 1623 case -ENOENT: 1624 case -ESHUTDOWN: 1625 /* this urb is terminated, clean up */ 1626 dbg("%s - urb shutting down with status: %d", 1627 __func__, status); 1628 return; 1629 default: 1630 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1631 "%d\n", __func__, status); 1632 goto exit; 1633 } 1634 1635 if (!length) { 1636 dbg("%s - no data in urb", __func__); 1637 goto exit; 1638 } 1639 1640 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, 1641 __func__, length, data); 1642 1643 if (length != 2) { 1644 dbg("%s - expecting packet of size 2, got %d", 1645 __func__, length); 1646 goto exit; 1647 } 1648 1649 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1650 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1651 dbg("%s - port_number %d, function %d, info 0x%x", 1652 __func__, port_number, function, data[1]); 1653 port = edge_serial->serial->port[port_number]; 1654 edge_port = usb_get_serial_port_data(port); 1655 if (!edge_port) { 1656 dbg("%s - edge_port not found", __func__); 1657 return; 1658 } 1659 switch (function) { 1660 case TIUMP_INTERRUPT_CODE_LSR: 1661 lsr = map_line_status(data[1]); 1662 if (lsr & UMP_UART_LSR_DATA_MASK) { 1663 /* Save the LSR event for bulk read 1664 completion routine */ 1665 dbg("%s - LSR Event Port %u LSR Status = %02x", 1666 __func__, port_number, lsr); 1667 edge_port->lsr_event = 1; 1668 edge_port->lsr_mask = lsr; 1669 } else { 1670 dbg("%s - ===== Port %d LSR Status = %02x ======", 1671 __func__, port_number, lsr); 1672 handle_new_lsr(edge_port, 0, lsr, 0); 1673 } 1674 break; 1675 1676 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1677 /* Copy MSR from UMP */ 1678 msr = data[1]; 1679 dbg("%s - ===== Port %u MSR Status = %02x ======", 1680 __func__, port_number, msr); 1681 handle_new_msr(edge_port, msr); 1682 break; 1683 1684 default: 1685 dev_err(&urb->dev->dev, 1686 "%s - Unknown Interrupt code from UMP %x\n", 1687 __func__, data[1]); 1688 break; 1689 1690 } 1691 1692exit: 1693 retval = usb_submit_urb(urb, GFP_ATOMIC); 1694 if (retval) 1695 dev_err(&urb->dev->dev, 1696 "%s - usb_submit_urb failed with result %d\n", 1697 __func__, retval); 1698} 1699 1700static void edge_bulk_in_callback(struct urb *urb) 1701{ 1702 struct edgeport_port *edge_port = urb->context; 1703 unsigned char *data = urb->transfer_buffer; 1704 struct tty_struct *tty; 1705 int retval = 0; 1706 int port_number; 1707 int status = urb->status; 1708 1709 dbg("%s", __func__); 1710 1711 switch (status) { 1712 case 0: 1713 /* success */ 1714 break; 1715 case -ECONNRESET: 1716 case -ENOENT: 1717 case -ESHUTDOWN: 1718 /* this urb is terminated, clean up */ 1719 dbg("%s - urb shutting down with status: %d", 1720 __func__, status); 1721 return; 1722 default: 1723 dev_err(&urb->dev->dev, 1724 "%s - nonzero read bulk status received: %d\n", 1725 __func__, status); 1726 } 1727 1728 if (status == -EPIPE) 1729 goto exit; 1730 1731 if (status) { 1732 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1733 return; 1734 } 1735 1736 port_number = edge_port->port->number - edge_port->port->serial->minor; 1737 1738 if (edge_port->lsr_event) { 1739 edge_port->lsr_event = 0; 1740 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", 1741 __func__, port_number, edge_port->lsr_mask, *data); 1742 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1743 /* Adjust buffer length/pointer */ 1744 --urb->actual_length; 1745 ++data; 1746 } 1747 1748 tty = tty_port_tty_get(&edge_port->port->port); 1749 if (tty && urb->actual_length) { 1750 usb_serial_debug_data(debug, &edge_port->port->dev, 1751 __func__, urb->actual_length, data); 1752 if (edge_port->close_pending) 1753 dbg("%s - close pending, dropping data on the floor", 1754 __func__); 1755 else 1756 edge_tty_recv(&edge_port->port->dev, tty, data, 1757 urb->actual_length); 1758 edge_port->icount.rx += urb->actual_length; 1759 } 1760 tty_kref_put(tty); 1761 1762exit: 1763 /* continue read unless stopped */ 1764 spin_lock(&edge_port->ep_lock); 1765 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1766 retval = usb_submit_urb(urb, GFP_ATOMIC); 1767 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1768 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1769 1770 spin_unlock(&edge_port->ep_lock); 1771 if (retval) 1772 dev_err(&urb->dev->dev, 1773 "%s - usb_submit_urb failed with result %d\n", 1774 __func__, retval); 1775} 1776 1777static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1778 unsigned char *data, int length) 1779{ 1780 int queued; 1781 1782 queued = tty_insert_flip_string(tty, data, length); 1783 if (queued < length) 1784 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1785 __func__, length - queued); 1786 tty_flip_buffer_push(tty); 1787} 1788 1789static void edge_bulk_out_callback(struct urb *urb) 1790{ 1791 struct usb_serial_port *port = urb->context; 1792 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1793 int status = urb->status; 1794 struct tty_struct *tty; 1795 1796 dbg("%s - port %d", __func__, port->number); 1797 1798 edge_port->ep_write_urb_in_use = 0; 1799 1800 switch (status) { 1801 case 0: 1802 /* success */ 1803 break; 1804 case -ECONNRESET: 1805 case -ENOENT: 1806 case -ESHUTDOWN: 1807 /* this urb is terminated, clean up */ 1808 dbg("%s - urb shutting down with status: %d", 1809 __func__, status); 1810 return; 1811 default: 1812 dev_err_console(port, "%s - nonzero write bulk status " 1813 "received: %d\n", __func__, status); 1814 } 1815 1816 /* send any buffered data */ 1817 tty = tty_port_tty_get(&port->port); 1818 edge_send(tty); 1819 tty_kref_put(tty); 1820} 1821 1822static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1823{ 1824 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1825 struct edgeport_serial *edge_serial; 1826 struct usb_device *dev; 1827 struct urb *urb; 1828 int port_number; 1829 int status; 1830 u16 open_settings; 1831 u8 transaction_timeout; 1832 1833 dbg("%s - port %d", __func__, port->number); 1834 1835 if (edge_port == NULL) 1836 return -ENODEV; 1837 1838 port_number = port->number - port->serial->minor; 1839 switch (port_number) { 1840 case 0: 1841 edge_port->uart_base = UMPMEM_BASE_UART1; 1842 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1843 break; 1844 case 1: 1845 edge_port->uart_base = UMPMEM_BASE_UART2; 1846 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1847 break; 1848 default: 1849 dev_err(&port->dev, "Unknown port number!!!\n"); 1850 return -ENODEV; 1851 } 1852 1853 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", 1854 __func__, port_number, edge_port->uart_base, 1855 edge_port->dma_address); 1856 1857 dev = port->serial->dev; 1858 1859 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1860 init_waitqueue_head(&edge_port->delta_msr_wait); 1861 1862 /* turn off loopback */ 1863 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1864 if (status) { 1865 dev_err(&port->dev, 1866 "%s - cannot send clear loopback command, %d\n", 1867 __func__, status); 1868 return status; 1869 } 1870 1871 /* set up the port settings */ 1872 if (tty) 1873 edge_set_termios(tty, port, tty->termios); 1874 1875 /* open up the port */ 1876 1877 /* milliseconds to timeout for DMA transfer */ 1878 transaction_timeout = 2; 1879 1880 edge_port->ump_read_timeout = 1881 max(20, ((transaction_timeout * 3) / 2)); 1882 1883 /* milliseconds to timeout for DMA transfer */ 1884 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1885 UMP_PIPE_TRANS_TIMEOUT_ENA | 1886 (transaction_timeout << 2)); 1887 1888 dbg("%s - Sending UMPC_OPEN_PORT", __func__); 1889 1890 /* Tell TI to open and start the port */ 1891 status = send_cmd(dev, UMPC_OPEN_PORT, 1892 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1893 if (status) { 1894 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1895 __func__, status); 1896 return status; 1897 } 1898 1899 /* Start the DMA? */ 1900 status = send_cmd(dev, UMPC_START_PORT, 1901 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1902 if (status) { 1903 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1904 __func__, status); 1905 return status; 1906 } 1907 1908 /* Clear TX and RX buffers in UMP */ 1909 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1910 if (status) { 1911 dev_err(&port->dev, 1912 "%s - cannot send clear buffers command, %d\n", 1913 __func__, status); 1914 return status; 1915 } 1916 1917 /* Read Initial MSR */ 1918 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1919 (__u16)(UMPM_UART1_PORT + port_number), 1920 &edge_port->shadow_msr, 1); 1921 if (status) { 1922 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1923 __func__, status); 1924 return status; 1925 } 1926 1927 dbg("ShadowMSR 0x%X", edge_port->shadow_msr); 1928 1929 /* Set Initial MCR */ 1930 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1931 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); 1932 1933 edge_serial = edge_port->edge_serial; 1934 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1935 return -ERESTARTSYS; 1936 if (edge_serial->num_ports_open == 0) { 1937 /* we are the first port to open, post the interrupt urb */ 1938 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1939 if (!urb) { 1940 dev_err(&port->dev, 1941 "%s - no interrupt urb present, exiting\n", 1942 __func__); 1943 status = -EINVAL; 1944 goto release_es_lock; 1945 } 1946 urb->context = edge_serial; 1947 status = usb_submit_urb(urb, GFP_KERNEL); 1948 if (status) { 1949 dev_err(&port->dev, 1950 "%s - usb_submit_urb failed with value %d\n", 1951 __func__, status); 1952 goto release_es_lock; 1953 } 1954 } 1955 1956 /* 1957 * reset the data toggle on the bulk endpoints to work around bug in 1958 * host controllers where things get out of sync some times 1959 */ 1960 usb_clear_halt(dev, port->write_urb->pipe); 1961 usb_clear_halt(dev, port->read_urb->pipe); 1962 1963 /* start up our bulk read urb */ 1964 urb = port->read_urb; 1965 if (!urb) { 1966 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1967 __func__); 1968 status = -EINVAL; 1969 goto unlink_int_urb; 1970 } 1971 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1972 urb->context = edge_port; 1973 status = usb_submit_urb(urb, GFP_KERNEL); 1974 if (status) { 1975 dev_err(&port->dev, 1976 "%s - read bulk usb_submit_urb failed with value %d\n", 1977 __func__, status); 1978 goto unlink_int_urb; 1979 } 1980 1981 ++edge_serial->num_ports_open; 1982 1983 dbg("%s - exited", __func__); 1984 1985 goto release_es_lock; 1986 1987unlink_int_urb: 1988 if (edge_port->edge_serial->num_ports_open == 0) 1989 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1990release_es_lock: 1991 mutex_unlock(&edge_serial->es_lock); 1992 return status; 1993} 1994 1995static void edge_close(struct usb_serial_port *port) 1996{ 1997 struct edgeport_serial *edge_serial; 1998 struct edgeport_port *edge_port; 1999 struct usb_serial *serial = port->serial; 2000 int port_number; 2001 2002 dbg("%s - port %d", __func__, port->number); 2003 2004 edge_serial = usb_get_serial_data(port->serial); 2005 edge_port = usb_get_serial_port_data(port); 2006 if (edge_serial == NULL || edge_port == NULL) 2007 return; 2008 2009 /* The bulkreadcompletion routine will check 2010 * this flag and dump add read data */ 2011 edge_port->close_pending = 1; 2012 2013 /* chase the port close and flush */ 2014 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 2015 2016 usb_kill_urb(port->read_urb); 2017 usb_kill_urb(port->write_urb); 2018 edge_port->ep_write_urb_in_use = 0; 2019 2020 /* assuming we can still talk to the device, 2021 * send a close port command to it */ 2022 dbg("%s - send umpc_close_port", __func__); 2023 port_number = port->number - port->serial->minor; 2024 2025 mutex_lock(&serial->disc_mutex); 2026 if (!serial->disconnected) { 2027 send_cmd(serial->dev, 2028 UMPC_CLOSE_PORT, 2029 (__u8)(UMPM_UART1_PORT + port_number), 2030 0, 2031 NULL, 2032 0); 2033 } 2034 mutex_unlock(&serial->disc_mutex); 2035 2036 mutex_lock(&edge_serial->es_lock); 2037 --edge_port->edge_serial->num_ports_open; 2038 if (edge_port->edge_serial->num_ports_open <= 0) { 2039 /* last port is now closed, let's shut down our interrupt urb */ 2040 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2041 edge_port->edge_serial->num_ports_open = 0; 2042 } 2043 mutex_unlock(&edge_serial->es_lock); 2044 edge_port->close_pending = 0; 2045 2046 dbg("%s - exited", __func__); 2047} 2048 2049static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2050 const unsigned char *data, int count) 2051{ 2052 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2053 2054 dbg("%s - port %d", __func__, port->number); 2055 2056 if (count == 0) { 2057 dbg("%s - write request of 0 bytes", __func__); 2058 return 0; 2059 } 2060 2061 if (edge_port == NULL) 2062 return -ENODEV; 2063 if (edge_port->close_pending == 1) 2064 return -ENODEV; 2065 2066 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2067 &edge_port->ep_lock); 2068 edge_send(tty); 2069 2070 return count; 2071} 2072 2073static void edge_send(struct tty_struct *tty) 2074{ 2075 struct usb_serial_port *port = tty->driver_data; 2076 int count, result; 2077 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2078 unsigned long flags; 2079 2080 2081 dbg("%s - port %d", __func__, port->number); 2082 2083 spin_lock_irqsave(&edge_port->ep_lock, flags); 2084 2085 if (edge_port->ep_write_urb_in_use) { 2086 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2087 return; 2088 } 2089 2090 count = kfifo_out(&edge_port->write_fifo, 2091 port->write_urb->transfer_buffer, 2092 port->bulk_out_size); 2093 2094 if (count == 0) { 2095 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2096 return; 2097 } 2098 2099 edge_port->ep_write_urb_in_use = 1; 2100 2101 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2102 2103 usb_serial_debug_data(debug, &port->dev, __func__, count, 2104 port->write_urb->transfer_buffer); 2105 2106 /* set up our urb */ 2107 port->write_urb->transfer_buffer_length = count; 2108 2109 /* send the data out the bulk port */ 2110 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2111 if (result) { 2112 dev_err_console(port, 2113 "%s - failed submitting write urb, error %d\n", 2114 __func__, result); 2115 edge_port->ep_write_urb_in_use = 0; 2116 /* TODO: reschedule edge_send */ 2117 } else 2118 edge_port->icount.tx += count; 2119 2120 /* wakeup any process waiting for writes to complete */ 2121 /* there is now more room in the buffer for new writes */ 2122 if (tty) 2123 tty_wakeup(tty); 2124} 2125 2126static int edge_write_room(struct tty_struct *tty) 2127{ 2128 struct usb_serial_port *port = tty->driver_data; 2129 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2130 int room = 0; 2131 unsigned long flags; 2132 2133 dbg("%s - port %d", __func__, port->number); 2134 2135 if (edge_port == NULL) 2136 return 0; 2137 if (edge_port->close_pending == 1) 2138 return 0; 2139 2140 spin_lock_irqsave(&edge_port->ep_lock, flags); 2141 room = kfifo_avail(&edge_port->write_fifo); 2142 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2143 2144 dbg("%s - returns %d", __func__, room); 2145 return room; 2146} 2147 2148static int edge_chars_in_buffer(struct tty_struct *tty) 2149{ 2150 struct usb_serial_port *port = tty->driver_data; 2151 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2152 int chars = 0; 2153 unsigned long flags; 2154 2155 dbg("%s - port %d", __func__, port->number); 2156 2157 if (edge_port == NULL) 2158 return 0; 2159 if (edge_port->close_pending == 1) 2160 return 0; 2161 2162 spin_lock_irqsave(&edge_port->ep_lock, flags); 2163 chars = kfifo_len(&edge_port->write_fifo); 2164 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2165 2166 dbg("%s - returns %d", __func__, chars); 2167 return chars; 2168} 2169 2170static void edge_throttle(struct tty_struct *tty) 2171{ 2172 struct usb_serial_port *port = tty->driver_data; 2173 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2174 int status; 2175 2176 dbg("%s - port %d", __func__, port->number); 2177 2178 if (edge_port == NULL) 2179 return; 2180 2181 /* if we are implementing XON/XOFF, send the stop character */ 2182 if (I_IXOFF(tty)) { 2183 unsigned char stop_char = STOP_CHAR(tty); 2184 status = edge_write(tty, port, &stop_char, 1); 2185 if (status <= 0) { 2186 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2187 } 2188 } 2189 2190 /* if we are implementing RTS/CTS, stop reads */ 2191 /* and the Edgeport will clear the RTS line */ 2192 if (C_CRTSCTS(tty)) 2193 stop_read(edge_port); 2194 2195} 2196 2197static void edge_unthrottle(struct tty_struct *tty) 2198{ 2199 struct usb_serial_port *port = tty->driver_data; 2200 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2201 int status; 2202 2203 dbg("%s - port %d", __func__, port->number); 2204 2205 if (edge_port == NULL) 2206 return; 2207 2208 /* if we are implementing XON/XOFF, send the start character */ 2209 if (I_IXOFF(tty)) { 2210 unsigned char start_char = START_CHAR(tty); 2211 status = edge_write(tty, port, &start_char, 1); 2212 if (status <= 0) { 2213 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2214 } 2215 } 2216 /* if we are implementing RTS/CTS, restart reads */ 2217 /* are the Edgeport will assert the RTS line */ 2218 if (C_CRTSCTS(tty)) { 2219 status = restart_read(edge_port); 2220 if (status) 2221 dev_err(&port->dev, 2222 "%s - read bulk usb_submit_urb failed: %d\n", 2223 __func__, status); 2224 } 2225 2226} 2227 2228static void stop_read(struct edgeport_port *edge_port) 2229{ 2230 unsigned long flags; 2231 2232 spin_lock_irqsave(&edge_port->ep_lock, flags); 2233 2234 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2235 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2236 edge_port->shadow_mcr &= ~MCR_RTS; 2237 2238 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2239} 2240 2241static int restart_read(struct edgeport_port *edge_port) 2242{ 2243 struct urb *urb; 2244 int status = 0; 2245 unsigned long flags; 2246 2247 spin_lock_irqsave(&edge_port->ep_lock, flags); 2248 2249 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2250 urb = edge_port->port->read_urb; 2251 status = usb_submit_urb(urb, GFP_ATOMIC); 2252 } 2253 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2254 edge_port->shadow_mcr |= MCR_RTS; 2255 2256 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2257 2258 return status; 2259} 2260 2261static void change_port_settings(struct tty_struct *tty, 2262 struct edgeport_port *edge_port, struct ktermios *old_termios) 2263{ 2264 struct ump_uart_config *config; 2265 int baud; 2266 unsigned cflag; 2267 int status; 2268 int port_number = edge_port->port->number - 2269 edge_port->port->serial->minor; 2270 2271 dbg("%s - port %d", __func__, edge_port->port->number); 2272 2273 config = kmalloc (sizeof (*config), GFP_KERNEL); 2274 if (!config) { 2275 *tty->termios = *old_termios; 2276 dev_err(&edge_port->port->dev, "%s - out of memory\n", 2277 __func__); 2278 return; 2279 } 2280 2281 cflag = tty->termios->c_cflag; 2282 2283 config->wFlags = 0; 2284 2285 /* These flags must be set */ 2286 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2287 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2288 config->bUartMode = (__u8)(edge_port->bUartMode); 2289 2290 switch (cflag & CSIZE) { 2291 case CS5: 2292 config->bDataBits = UMP_UART_CHAR5BITS; 2293 dbg("%s - data bits = 5", __func__); 2294 break; 2295 case CS6: 2296 config->bDataBits = UMP_UART_CHAR6BITS; 2297 dbg("%s - data bits = 6", __func__); 2298 break; 2299 case CS7: 2300 config->bDataBits = UMP_UART_CHAR7BITS; 2301 dbg("%s - data bits = 7", __func__); 2302 break; 2303 default: 2304 case CS8: 2305 config->bDataBits = UMP_UART_CHAR8BITS; 2306 dbg("%s - data bits = 8", __func__); 2307 break; 2308 } 2309 2310 if (cflag & PARENB) { 2311 if (cflag & PARODD) { 2312 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2313 config->bParity = UMP_UART_ODDPARITY; 2314 dbg("%s - parity = odd", __func__); 2315 } else { 2316 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2317 config->bParity = UMP_UART_EVENPARITY; 2318 dbg("%s - parity = even", __func__); 2319 } 2320 } else { 2321 config->bParity = UMP_UART_NOPARITY; 2322 dbg("%s - parity = none", __func__); 2323 } 2324 2325 if (cflag & CSTOPB) { 2326 config->bStopBits = UMP_UART_STOPBIT2; 2327 dbg("%s - stop bits = 2", __func__); 2328 } else { 2329 config->bStopBits = UMP_UART_STOPBIT1; 2330 dbg("%s - stop bits = 1", __func__); 2331 } 2332 2333 /* figure out the flow control settings */ 2334 if (cflag & CRTSCTS) { 2335 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2336 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2337 dbg("%s - RTS/CTS is enabled", __func__); 2338 } else { 2339 dbg("%s - RTS/CTS is disabled", __func__); 2340 tty->hw_stopped = 0; 2341 restart_read(edge_port); 2342 } 2343 2344 /* if we are implementing XON/XOFF, set the start and stop 2345 character in the device */ 2346 config->cXon = START_CHAR(tty); 2347 config->cXoff = STOP_CHAR(tty); 2348 2349 /* if we are implementing INBOUND XON/XOFF */ 2350 if (I_IXOFF(tty)) { 2351 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2352 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2353 __func__, config->cXon, config->cXoff); 2354 } else 2355 dbg("%s - INBOUND XON/XOFF is disabled", __func__); 2356 2357 /* if we are implementing OUTBOUND XON/XOFF */ 2358 if (I_IXON(tty)) { 2359 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2360 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2361 __func__, config->cXon, config->cXoff); 2362 } else 2363 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); 2364 2365 tty->termios->c_cflag &= ~CMSPAR; 2366 2367 /* Round the baud rate */ 2368 baud = tty_get_baud_rate(tty); 2369 if (!baud) { 2370 /* pick a default, any default... */ 2371 baud = 9600; 2372 } else 2373 tty_encode_baud_rate(tty, baud, baud); 2374 2375 edge_port->baud_rate = baud; 2376 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2377 2378 /* FIXME: Recompute actual baud from divisor here */ 2379 2380 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, 2381 config->wBaudRate); 2382 2383 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); 2384 dbg("wFlags: 0x%x", config->wFlags); 2385 dbg("bDataBits: %d", config->bDataBits); 2386 dbg("bParity: %d", config->bParity); 2387 dbg("bStopBits: %d", config->bStopBits); 2388 dbg("cXon: %d", config->cXon); 2389 dbg("cXoff: %d", config->cXoff); 2390 dbg("bUartMode: %d", config->bUartMode); 2391 2392 /* move the word values into big endian mode */ 2393 cpu_to_be16s(&config->wFlags); 2394 cpu_to_be16s(&config->wBaudRate); 2395 2396 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2397 (__u8)(UMPM_UART1_PORT + port_number), 2398 0, (__u8 *)config, sizeof(*config)); 2399 if (status) 2400 dbg("%s - error %d when trying to write config to device", 2401 __func__, status); 2402 kfree(config); 2403} 2404 2405static void edge_set_termios(struct tty_struct *tty, 2406 struct usb_serial_port *port, struct ktermios *old_termios) 2407{ 2408 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2409 unsigned int cflag; 2410 2411 cflag = tty->termios->c_cflag; 2412 2413 dbg("%s - clfag %08x iflag %08x", __func__, 2414 tty->termios->c_cflag, tty->termios->c_iflag); 2415 dbg("%s - old clfag %08x old iflag %08x", __func__, 2416 old_termios->c_cflag, old_termios->c_iflag); 2417 dbg("%s - port %d", __func__, port->number); 2418 2419 if (edge_port == NULL) 2420 return; 2421 /* change the port settings to the new ones specified */ 2422 change_port_settings(tty, edge_port, old_termios); 2423} 2424 2425static int edge_tiocmset(struct tty_struct *tty, 2426 unsigned int set, unsigned int clear) 2427{ 2428 struct usb_serial_port *port = tty->driver_data; 2429 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2430 unsigned int mcr; 2431 unsigned long flags; 2432 2433 dbg("%s - port %d", __func__, port->number); 2434 2435 spin_lock_irqsave(&edge_port->ep_lock, flags); 2436 mcr = edge_port->shadow_mcr; 2437 if (set & TIOCM_RTS) 2438 mcr |= MCR_RTS; 2439 if (set & TIOCM_DTR) 2440 mcr |= MCR_DTR; 2441 if (set & TIOCM_LOOP) 2442 mcr |= MCR_LOOPBACK; 2443 2444 if (clear & TIOCM_RTS) 2445 mcr &= ~MCR_RTS; 2446 if (clear & TIOCM_DTR) 2447 mcr &= ~MCR_DTR; 2448 if (clear & TIOCM_LOOP) 2449 mcr &= ~MCR_LOOPBACK; 2450 2451 edge_port->shadow_mcr = mcr; 2452 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2453 2454 restore_mcr(edge_port, mcr); 2455 return 0; 2456} 2457 2458static int edge_tiocmget(struct tty_struct *tty) 2459{ 2460 struct usb_serial_port *port = tty->driver_data; 2461 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2462 unsigned int result = 0; 2463 unsigned int msr; 2464 unsigned int mcr; 2465 unsigned long flags; 2466 2467 dbg("%s - port %d", __func__, port->number); 2468 2469 spin_lock_irqsave(&edge_port->ep_lock, flags); 2470 2471 msr = edge_port->shadow_msr; 2472 mcr = edge_port->shadow_mcr; 2473 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2474 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2475 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2476 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2477 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2478 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2479 2480 2481 dbg("%s -- %x", __func__, result); 2482 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2483 2484 return result; 2485} 2486 2487static int edge_get_icount(struct tty_struct *tty, 2488 struct serial_icounter_struct *icount) 2489{ 2490 struct usb_serial_port *port = tty->driver_data; 2491 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2492 struct async_icount *ic = &edge_port->icount; 2493 2494 icount->cts = ic->cts; 2495 icount->dsr = ic->dsr; 2496 icount->rng = ic->rng; 2497 icount->dcd = ic->dcd; 2498 icount->tx = ic->tx; 2499 icount->rx = ic->rx; 2500 icount->frame = ic->frame; 2501 icount->parity = ic->parity; 2502 icount->overrun = ic->overrun; 2503 icount->brk = ic->brk; 2504 icount->buf_overrun = ic->buf_overrun; 2505 return 0; 2506} 2507 2508static int get_serial_info(struct edgeport_port *edge_port, 2509 struct serial_struct __user *retinfo) 2510{ 2511 struct serial_struct tmp; 2512 2513 if (!retinfo) 2514 return -EFAULT; 2515 2516 memset(&tmp, 0, sizeof(tmp)); 2517 2518 tmp.type = PORT_16550A; 2519 tmp.line = edge_port->port->serial->minor; 2520 tmp.port = edge_port->port->number; 2521 tmp.irq = 0; 2522 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2523 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2524 tmp.baud_base = 9600; 2525 tmp.close_delay = 5*HZ; 2526 tmp.closing_wait = closing_wait; 2527 2528 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2529 return -EFAULT; 2530 return 0; 2531} 2532 2533static int edge_ioctl(struct tty_struct *tty, 2534 unsigned int cmd, unsigned long arg) 2535{ 2536 struct usb_serial_port *port = tty->driver_data; 2537 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2538 struct async_icount cnow; 2539 struct async_icount cprev; 2540 2541 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); 2542 2543 switch (cmd) { 2544 case TIOCGSERIAL: 2545 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); 2546 return get_serial_info(edge_port, 2547 (struct serial_struct __user *) arg); 2548 case TIOCMIWAIT: 2549 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); 2550 cprev = edge_port->icount; 2551 while (1) { 2552 interruptible_sleep_on(&edge_port->delta_msr_wait); 2553 /* see if a signal did it */ 2554 if (signal_pending(current)) 2555 return -ERESTARTSYS; 2556 cnow = edge_port->icount; 2557 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2558 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2559 return -EIO; /* no change => error */ 2560 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2561 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2562 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2563 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2564 return 0; 2565 } 2566 cprev = cnow; 2567 } 2568 /* not reached */ 2569 break; 2570 } 2571 return -ENOIOCTLCMD; 2572} 2573 2574static void edge_break(struct tty_struct *tty, int break_state) 2575{ 2576 struct usb_serial_port *port = tty->driver_data; 2577 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2578 int status; 2579 int bv = 0; /* Off */ 2580 2581 dbg("%s - state = %d", __func__, break_state); 2582 2583 /* chase the port close */ 2584 chase_port(edge_port, 0, 0); 2585 2586 if (break_state == -1) 2587 bv = 1; /* On */ 2588 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2589 if (status) 2590 dbg("%s - error %d sending break set/clear command.", 2591 __func__, status); 2592} 2593 2594static int edge_startup(struct usb_serial *serial) 2595{ 2596 struct edgeport_serial *edge_serial; 2597 struct edgeport_port *edge_port; 2598 struct usb_device *dev; 2599 int status; 2600 int i; 2601 2602 dev = serial->dev; 2603 2604 /* create our private serial structure */ 2605 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2606 if (edge_serial == NULL) { 2607 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2608 return -ENOMEM; 2609 } 2610 mutex_init(&edge_serial->es_lock); 2611 edge_serial->serial = serial; 2612 usb_set_serial_data(serial, edge_serial); 2613 2614 status = download_fw(edge_serial); 2615 if (status) { 2616 kfree(edge_serial); 2617 return status; 2618 } 2619 2620 /* set up our port private structures */ 2621 for (i = 0; i < serial->num_ports; ++i) { 2622 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); 2623 if (edge_port == NULL) { 2624 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2625 __func__); 2626 goto cleanup; 2627 } 2628 spin_lock_init(&edge_port->ep_lock); 2629 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2630 GFP_KERNEL)) { 2631 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2632 __func__); 2633 kfree(edge_port); 2634 goto cleanup; 2635 } 2636 edge_port->port = serial->port[i]; 2637 edge_port->edge_serial = edge_serial; 2638 usb_set_serial_port_data(serial->port[i], edge_port); 2639 edge_port->bUartMode = default_uart_mode; 2640 } 2641 2642 return 0; 2643 2644cleanup: 2645 for (--i; i >= 0; --i) { 2646 edge_port = usb_get_serial_port_data(serial->port[i]); 2647 kfifo_free(&edge_port->write_fifo); 2648 kfree(edge_port); 2649 usb_set_serial_port_data(serial->port[i], NULL); 2650 } 2651 kfree(edge_serial); 2652 usb_set_serial_data(serial, NULL); 2653 return -ENOMEM; 2654} 2655 2656static void edge_disconnect(struct usb_serial *serial) 2657{ 2658 dbg("%s", __func__); 2659} 2660 2661static void edge_release(struct usb_serial *serial) 2662{ 2663 int i; 2664 struct edgeport_port *edge_port; 2665 2666 dbg("%s", __func__); 2667 2668 for (i = 0; i < serial->num_ports; ++i) { 2669 edge_port = usb_get_serial_port_data(serial->port[i]); 2670 kfifo_free(&edge_port->write_fifo); 2671 kfree(edge_port); 2672 } 2673 kfree(usb_get_serial_data(serial)); 2674} 2675 2676 2677/* Sysfs Attributes */ 2678 2679static ssize_t show_uart_mode(struct device *dev, 2680 struct device_attribute *attr, char *buf) 2681{ 2682 struct usb_serial_port *port = to_usb_serial_port(dev); 2683 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2684 2685 return sprintf(buf, "%d\n", edge_port->bUartMode); 2686} 2687 2688static ssize_t store_uart_mode(struct device *dev, 2689 struct device_attribute *attr, const char *valbuf, size_t count) 2690{ 2691 struct usb_serial_port *port = to_usb_serial_port(dev); 2692 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2693 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2694 2695 dbg("%s: setting uart_mode = %d", __func__, v); 2696 2697 if (v < 256) 2698 edge_port->bUartMode = v; 2699 else 2700 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2701 2702 return count; 2703} 2704 2705static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2706 store_uart_mode); 2707 2708static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2709{ 2710 return device_create_file(&port->dev, &dev_attr_uart_mode); 2711} 2712 2713static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2714{ 2715 device_remove_file(&port->dev, &dev_attr_uart_mode); 2716 return 0; 2717} 2718 2719 2720static struct usb_serial_driver edgeport_1port_device = { 2721 .driver = { 2722 .owner = THIS_MODULE, 2723 .name = "edgeport_ti_1", 2724 }, 2725 .description = "Edgeport TI 1 port adapter", 2726 .id_table = edgeport_1port_id_table, 2727 .num_ports = 1, 2728 .open = edge_open, 2729 .close = edge_close, 2730 .throttle = edge_throttle, 2731 .unthrottle = edge_unthrottle, 2732 .attach = edge_startup, 2733 .disconnect = edge_disconnect, 2734 .release = edge_release, 2735 .port_probe = edge_create_sysfs_attrs, 2736 .port_remove = edge_remove_sysfs_attrs, 2737 .ioctl = edge_ioctl, 2738 .set_termios = edge_set_termios, 2739 .tiocmget = edge_tiocmget, 2740 .tiocmset = edge_tiocmset, 2741 .get_icount = edge_get_icount, 2742 .write = edge_write, 2743 .write_room = edge_write_room, 2744 .chars_in_buffer = edge_chars_in_buffer, 2745 .break_ctl = edge_break, 2746 .read_int_callback = edge_interrupt_callback, 2747 .read_bulk_callback = edge_bulk_in_callback, 2748 .write_bulk_callback = edge_bulk_out_callback, 2749}; 2750 2751static struct usb_serial_driver edgeport_2port_device = { 2752 .driver = { 2753 .owner = THIS_MODULE, 2754 .name = "edgeport_ti_2", 2755 }, 2756 .description = "Edgeport TI 2 port adapter", 2757 .id_table = edgeport_2port_id_table, 2758 .num_ports = 2, 2759 .open = edge_open, 2760 .close = edge_close, 2761 .throttle = edge_throttle, 2762 .unthrottle = edge_unthrottle, 2763 .attach = edge_startup, 2764 .disconnect = edge_disconnect, 2765 .release = edge_release, 2766 .port_probe = edge_create_sysfs_attrs, 2767 .port_remove = edge_remove_sysfs_attrs, 2768 .ioctl = edge_ioctl, 2769 .set_termios = edge_set_termios, 2770 .tiocmget = edge_tiocmget, 2771 .tiocmset = edge_tiocmset, 2772 .write = edge_write, 2773 .write_room = edge_write_room, 2774 .chars_in_buffer = edge_chars_in_buffer, 2775 .break_ctl = edge_break, 2776 .read_int_callback = edge_interrupt_callback, 2777 .read_bulk_callback = edge_bulk_in_callback, 2778 .write_bulk_callback = edge_bulk_out_callback, 2779}; 2780 2781static struct usb_serial_driver * const serial_drivers[] = { 2782 &edgeport_1port_device, &edgeport_2port_device, NULL 2783}; 2784 2785module_usb_serial_driver(serial_drivers, id_table_combined); 2786 2787MODULE_AUTHOR(DRIVER_AUTHOR); 2788MODULE_DESCRIPTION(DRIVER_DESC); 2789MODULE_LICENSE("GPL"); 2790MODULE_FIRMWARE("edgeport/down3.bin"); 2791 2792module_param(debug, bool, S_IRUGO | S_IWUSR); 2793MODULE_PARM_DESC(debug, "Debug enabled or not"); 2794 2795module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2796MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2797 2798module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2799MODULE_PARM_DESC(ignore_cpu_rev, 2800 "Ignore the cpu revision when connecting to a device"); 2801 2802module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2803MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2804