io_ti.c revision 59d33f2fc2d63796296b1b76143e039d6e7cf532
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 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 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 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 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 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __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 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __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 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 311 } 312 be_start_address = cpu_to_be16(start_address); 313 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 314 (__u16)address_type, 315 (__force __u16)be_start_address, 316 buffer, read_length); 317 318 if (status) { 319 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 320 return status; 321 } 322 323 if (read_length > 1) 324 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 325 326 /* Update pointers/length */ 327 start_address += read_length; 328 buffer += read_length; 329 length -= read_length; 330 } 331 332 return status; 333} 334 335static int read_ram(struct usb_device *dev, int start_address, 336 int length, __u8 *buffer) 337{ 338 return read_download_mem(dev, start_address, length, 339 DTK_ADDR_SPACE_XDATA, buffer); 340} 341 342/* Read edgeport memory to a given block */ 343static int read_boot_mem(struct edgeport_serial *serial, 344 int start_address, int length, __u8 *buffer) 345{ 346 int status = 0; 347 int i; 348 349 for (i = 0; i < length; i++) { 350 status = ti_vread_sync(serial->serial->dev, 351 UMPC_MEMORY_READ, serial->TI_I2C_Type, 352 (__u16)(start_address+i), &buffer[i], 0x01); 353 if (status) { 354 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 355 return status; 356 } 357 } 358 359 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 360 __func__, start_address, length); 361 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 362 363 serial->TiReadI2C = 1; 364 365 return status; 366} 367 368/* Write given block to TI EPROM memory */ 369static int write_boot_mem(struct edgeport_serial *serial, 370 int start_address, int length, __u8 *buffer) 371{ 372 int status = 0; 373 int i; 374 u8 *temp; 375 376 /* Must do a read before write */ 377 if (!serial->TiReadI2C) { 378 temp = kmalloc(1, GFP_KERNEL); 379 if (!temp) { 380 dev_err(&serial->serial->dev->dev, 381 "%s - out of memory\n", __func__); 382 return -ENOMEM; 383 } 384 status = read_boot_mem(serial, 0, 1, temp); 385 kfree(temp); 386 if (status) 387 return status; 388 } 389 390 for (i = 0; i < length; ++i) { 391 status = ti_vsend_sync(serial->serial->dev, 392 UMPC_MEMORY_WRITE, buffer[i], 393 (__u16)(i + start_address), NULL, 0); 394 if (status) 395 return status; 396 } 397 398 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 399 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 400 401 return status; 402} 403 404 405/* Write edgeport I2C memory to TI chip */ 406static int write_i2c_mem(struct edgeport_serial *serial, 407 int start_address, int length, __u8 address_type, __u8 *buffer) 408{ 409 struct device *dev = &serial->serial->dev->dev; 410 int status = 0; 411 int write_length; 412 __be16 be_start_address; 413 414 /* We can only send a maximum of 1 aligned byte page at a time */ 415 416 /* calculate the number of bytes left in the first page */ 417 write_length = EPROM_PAGE_SIZE - 418 (start_address & (EPROM_PAGE_SIZE - 1)); 419 420 if (write_length > length) 421 write_length = length; 422 423 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 424 __func__, start_address, write_length); 425 usb_serial_debug_data(dev, __func__, write_length, buffer); 426 427 /* Write first page */ 428 be_start_address = cpu_to_be16(start_address); 429 status = ti_vsend_sync(serial->serial->dev, 430 UMPC_MEMORY_WRITE, (__u16)address_type, 431 (__force __u16)be_start_address, 432 buffer, write_length); 433 if (status) { 434 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 435 return status; 436 } 437 438 length -= write_length; 439 start_address += write_length; 440 buffer += write_length; 441 442 /* We should be aligned now -- can write 443 max page size bytes at a time */ 444 while (length) { 445 if (length > EPROM_PAGE_SIZE) 446 write_length = EPROM_PAGE_SIZE; 447 else 448 write_length = length; 449 450 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 451 __func__, start_address, write_length); 452 usb_serial_debug_data(dev, __func__, write_length, buffer); 453 454 /* Write next page */ 455 be_start_address = cpu_to_be16(start_address); 456 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 457 (__u16)address_type, 458 (__force __u16)be_start_address, 459 buffer, write_length); 460 if (status) { 461 dev_err(dev, "%s - ERROR %d\n", __func__, status); 462 return status; 463 } 464 465 length -= write_length; 466 start_address += write_length; 467 buffer += write_length; 468 } 469 return status; 470} 471 472/* Examine the UMP DMA registers and LSR 473 * 474 * Check the MSBit of the X and Y DMA byte count registers. 475 * A zero in this bit indicates that the TX DMA buffers are empty 476 * then check the TX Empty bit in the UART. 477 */ 478static int tx_active(struct edgeport_port *port) 479{ 480 int status; 481 struct out_endpoint_desc_block *oedb; 482 __u8 *lsr; 483 int bytes_left = 0; 484 485 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 486 if (!oedb) { 487 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 488 return -ENOMEM; 489 } 490 491 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 492 as not all platforms can do DMA 493 from stack */ 494 if (!lsr) { 495 kfree(oedb); 496 return -ENOMEM; 497 } 498 /* Read the DMA Count Registers */ 499 status = read_ram(port->port->serial->dev, port->dma_address, 500 sizeof(*oedb), (void *)oedb); 501 if (status) 502 goto exit_is_tx_active; 503 504 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 505 506 /* and the LSR */ 507 status = read_ram(port->port->serial->dev, 508 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 509 510 if (status) 511 goto exit_is_tx_active; 512 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 513 514 /* If either buffer has data or we are transmitting then return TRUE */ 515 if ((oedb->XByteCount & 0x80) != 0) 516 bytes_left += 64; 517 518 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 519 bytes_left += 1; 520 521 /* We return Not Active if we get any kind of error */ 522exit_is_tx_active: 523 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 524 525 kfree(lsr); 526 kfree(oedb); 527 return bytes_left; 528} 529 530static void chase_port(struct edgeport_port *port, unsigned long timeout, 531 int flush) 532{ 533 int baud_rate; 534 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 535 struct usb_serial *serial = port->port->serial; 536 wait_queue_t wait; 537 unsigned long flags; 538 539 if (!timeout) 540 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 541 542 /* wait for data to drain from the buffer */ 543 spin_lock_irqsave(&port->ep_lock, flags); 544 init_waitqueue_entry(&wait, current); 545 add_wait_queue(&tty->write_wait, &wait); 546 for (;;) { 547 set_current_state(TASK_INTERRUPTIBLE); 548 if (kfifo_len(&port->write_fifo) == 0 549 || timeout == 0 || signal_pending(current) 550 || serial->disconnected) 551 /* disconnect */ 552 break; 553 spin_unlock_irqrestore(&port->ep_lock, flags); 554 timeout = schedule_timeout(timeout); 555 spin_lock_irqsave(&port->ep_lock, flags); 556 } 557 set_current_state(TASK_RUNNING); 558 remove_wait_queue(&tty->write_wait, &wait); 559 if (flush) 560 kfifo_reset_out(&port->write_fifo); 561 spin_unlock_irqrestore(&port->ep_lock, flags); 562 tty_kref_put(tty); 563 564 /* wait for data to drain from the device */ 565 timeout += jiffies; 566 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 567 && !serial->disconnected) { 568 /* not disconnected */ 569 if (!tx_active(port)) 570 break; 571 msleep(10); 572 } 573 574 /* disconnected */ 575 if (serial->disconnected) 576 return; 577 578 /* wait one more character time, based on baud rate */ 579 /* (tx_active doesn't seem to wait for the last byte) */ 580 baud_rate = port->baud_rate; 581 if (baud_rate == 0) 582 baud_rate = 50; 583 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 584} 585 586static int choose_config(struct usb_device *dev) 587{ 588 /* 589 * There may be multiple configurations on this device, in which case 590 * we would need to read and parse all of them to find out which one 591 * we want. However, we just support one config at this point, 592 * configuration # 1, which is Config Descriptor 0. 593 */ 594 595 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 596 __func__, dev->config->desc.bNumInterfaces); 597 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 598 __func__, dev->config->desc.bMaxPower * 2); 599 600 if (dev->config->desc.bNumInterfaces != 1) { 601 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 602 return -ENODEV; 603 } 604 605 return 0; 606} 607 608static int read_rom(struct edgeport_serial *serial, 609 int start_address, int length, __u8 *buffer) 610{ 611 int status; 612 613 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 614 status = read_download_mem(serial->serial->dev, 615 start_address, 616 length, 617 serial->TI_I2C_Type, 618 buffer); 619 } else { 620 status = read_boot_mem(serial, start_address, length, 621 buffer); 622 } 623 return status; 624} 625 626static int write_rom(struct edgeport_serial *serial, int start_address, 627 int length, __u8 *buffer) 628{ 629 if (serial->product_info.TiMode == TI_MODE_BOOT) 630 return write_boot_mem(serial, start_address, length, 631 buffer); 632 633 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 634 return write_i2c_mem(serial, start_address, length, 635 serial->TI_I2C_Type, buffer); 636 return -EINVAL; 637} 638 639 640 641/* Read a descriptor header from I2C based on type */ 642static int get_descriptor_addr(struct edgeport_serial *serial, 643 int desc_type, struct ti_i2c_desc *rom_desc) 644{ 645 int start_address; 646 int status; 647 648 /* Search for requested descriptor in I2C */ 649 start_address = 2; 650 do { 651 status = read_rom(serial, 652 start_address, 653 sizeof(struct ti_i2c_desc), 654 (__u8 *)rom_desc); 655 if (status) 656 return 0; 657 658 if (rom_desc->Type == desc_type) 659 return start_address; 660 661 start_address = start_address + sizeof(struct ti_i2c_desc) 662 + rom_desc->Size; 663 664 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 665 666 return 0; 667} 668 669/* Validate descriptor checksum */ 670static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 671{ 672 __u16 i; 673 __u8 cs = 0; 674 675 for (i = 0; i < rom_desc->Size; i++) 676 cs = (__u8)(cs + buffer[i]); 677 678 if (cs != rom_desc->CheckSum) { 679 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 680 return -EINVAL; 681 } 682 return 0; 683} 684 685/* Make sure that the I2C image is good */ 686static int check_i2c_image(struct edgeport_serial *serial) 687{ 688 struct device *dev = &serial->serial->dev->dev; 689 int status = 0; 690 struct ti_i2c_desc *rom_desc; 691 int start_address = 2; 692 __u8 *buffer; 693 __u16 ttype; 694 695 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 696 if (!rom_desc) { 697 dev_err(dev, "%s - out of memory\n", __func__); 698 return -ENOMEM; 699 } 700 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 701 if (!buffer) { 702 dev_err(dev, "%s - out of memory when allocating buffer\n", 703 __func__); 704 kfree(rom_desc); 705 return -ENOMEM; 706 } 707 708 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 709 status = read_rom(serial, 0, 1, buffer); 710 if (status) 711 goto out; 712 713 if (*buffer != UMP5152 && *buffer != UMP3410) { 714 dev_err(dev, "%s - invalid buffer signature\n", __func__); 715 status = -ENODEV; 716 goto out; 717 } 718 719 do { 720 /* Validate the I2C */ 721 status = read_rom(serial, 722 start_address, 723 sizeof(struct ti_i2c_desc), 724 (__u8 *)rom_desc); 725 if (status) 726 break; 727 728 if ((start_address + sizeof(struct ti_i2c_desc) + 729 rom_desc->Size) > TI_MAX_I2C_SIZE) { 730 status = -ENODEV; 731 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 732 break; 733 } 734 735 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 736 737 /* Skip type 2 record */ 738 ttype = rom_desc->Type & 0x0f; 739 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 740 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 741 /* Read the descriptor data */ 742 status = read_rom(serial, start_address + 743 sizeof(struct ti_i2c_desc), 744 rom_desc->Size, buffer); 745 if (status) 746 break; 747 748 status = valid_csum(rom_desc, buffer); 749 if (status) 750 break; 751 } 752 start_address = start_address + sizeof(struct ti_i2c_desc) + 753 rom_desc->Size; 754 755 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 756 (start_address < TI_MAX_I2C_SIZE)); 757 758 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 759 (start_address > TI_MAX_I2C_SIZE)) 760 status = -ENODEV; 761 762out: 763 kfree(buffer); 764 kfree(rom_desc); 765 return status; 766} 767 768static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 769{ 770 int status; 771 int start_address; 772 struct ti_i2c_desc *rom_desc; 773 struct edge_ti_manuf_descriptor *desc; 774 struct device *dev = &serial->serial->dev->dev; 775 776 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 777 if (!rom_desc) { 778 dev_err(dev, "%s - out of memory\n", __func__); 779 return -ENOMEM; 780 } 781 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 782 rom_desc); 783 784 if (!start_address) { 785 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 786 status = -ENODEV; 787 goto exit; 788 } 789 790 /* Read the descriptor data */ 791 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 792 rom_desc->Size, buffer); 793 if (status) 794 goto exit; 795 796 status = valid_csum(rom_desc, buffer); 797 798 desc = (struct edge_ti_manuf_descriptor *)buffer; 799 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 800 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 801 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 802 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 803 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 804 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 805 806exit: 807 kfree(rom_desc); 808 return status; 809} 810 811/* Build firmware header used for firmware update */ 812static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 813{ 814 __u8 *buffer; 815 int buffer_size; 816 int i; 817 int err; 818 __u8 cs = 0; 819 struct ti_i2c_desc *i2c_header; 820 struct ti_i2c_image_header *img_header; 821 struct ti_i2c_firmware_rec *firmware_rec; 822 const struct firmware *fw; 823 const char *fw_name = "edgeport/down3.bin"; 824 825 /* In order to update the I2C firmware we must change the type 2 record 826 * to type 0xF2. This will force the UMP to come up in Boot Mode. 827 * Then while in boot mode, the driver will download the latest 828 * firmware (padded to 15.5k) into the UMP ram. And finally when the 829 * device comes back up in download mode the driver will cause the new 830 * firmware to be copied from the UMP Ram to I2C and the firmware will 831 * update the record type from 0xf2 to 0x02. 832 */ 833 834 /* Allocate a 15.5k buffer + 2 bytes for version number 835 * (Firmware Record) */ 836 buffer_size = (((1024 * 16) - 512 ) + 837 sizeof(struct ti_i2c_firmware_rec)); 838 839 buffer = kmalloc(buffer_size, GFP_KERNEL); 840 if (!buffer) { 841 dev_err(dev, "%s - out of memory\n", __func__); 842 return -ENOMEM; 843 } 844 845 // Set entire image of 0xffs 846 memset(buffer, 0xff, buffer_size); 847 848 err = request_firmware(&fw, fw_name, dev); 849 if (err) { 850 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 851 fw_name, err); 852 kfree(buffer); 853 return err; 854 } 855 856 /* Save Download Version Number */ 857 OperationalMajorVersion = fw->data[0]; 858 OperationalMinorVersion = fw->data[1]; 859 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 860 861 /* Copy version number into firmware record */ 862 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 863 864 firmware_rec->Ver_Major = OperationalMajorVersion; 865 firmware_rec->Ver_Minor = OperationalMinorVersion; 866 867 /* Pointer to fw_down memory image */ 868 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 869 870 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 871 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 872 le16_to_cpu(img_header->Length)); 873 874 release_firmware(fw); 875 876 for (i=0; i < buffer_size; i++) { 877 cs = (__u8)(cs + buffer[i]); 878 } 879 880 kfree(buffer); 881 882 /* Build new header */ 883 i2c_header = (struct ti_i2c_desc *)header; 884 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 885 886 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 887 i2c_header->Size = (__u16)buffer_size; 888 i2c_header->CheckSum = cs; 889 firmware_rec->Ver_Major = OperationalMajorVersion; 890 firmware_rec->Ver_Minor = OperationalMinorVersion; 891 892 return 0; 893} 894 895/* Try to figure out what type of I2c we have */ 896static int i2c_type_bootmode(struct edgeport_serial *serial) 897{ 898 struct device *dev = &serial->serial->dev->dev; 899 int status; 900 u8 *data; 901 902 data = kmalloc(1, GFP_KERNEL); 903 if (!data) { 904 dev_err(dev, "%s - out of memory\n", __func__); 905 return -ENOMEM; 906 } 907 908 /* Try to read type 2 */ 909 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 910 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 911 if (status) 912 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 913 else 914 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 915 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 916 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 917 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 918 goto out; 919 } 920 921 /* Try to read type 3 */ 922 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 923 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 924 if (status) 925 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 926 else 927 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 928 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 929 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 930 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 931 goto out; 932 } 933 934 dev_dbg(dev, "%s - Unknown\n", __func__); 935 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 936 status = -ENODEV; 937out: 938 kfree(data); 939 return status; 940} 941 942static int bulk_xfer(struct usb_serial *serial, void *buffer, 943 int length, int *num_sent) 944{ 945 int status; 946 947 status = usb_bulk_msg(serial->dev, 948 usb_sndbulkpipe(serial->dev, 949 serial->port[0]->bulk_out_endpointAddress), 950 buffer, length, num_sent, 1000); 951 return status; 952} 953 954/* Download given firmware image to the device (IN BOOT MODE) */ 955static int download_code(struct edgeport_serial *serial, __u8 *image, 956 int image_length) 957{ 958 int status = 0; 959 int pos; 960 int transfer; 961 int done; 962 963 /* Transfer firmware image */ 964 for (pos = 0; pos < image_length; ) { 965 /* Read the next buffer from file */ 966 transfer = image_length - pos; 967 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 968 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 969 970 /* Transfer data */ 971 status = bulk_xfer(serial->serial, &image[pos], 972 transfer, &done); 973 if (status) 974 break; 975 /* Advance buffer pointer */ 976 pos += done; 977 } 978 979 return status; 980} 981 982/* FIXME!!! */ 983static int config_boot_dev(struct usb_device *dev) 984{ 985 return 0; 986} 987 988static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 989{ 990 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 991} 992 993/** 994 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 995 * 996 * This routine downloads the main operating code into the TI5052, using the 997 * boot code already burned into E2PROM or ROM. 998 */ 999static int download_fw(struct edgeport_serial *serial) 1000{ 1001 struct device *dev = &serial->serial->dev->dev; 1002 int status = 0; 1003 int start_address; 1004 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1005 struct usb_interface_descriptor *interface; 1006 int download_cur_ver; 1007 int download_new_ver; 1008 1009 /* This routine is entered by both the BOOT mode and the Download mode 1010 * We can determine which code is running by the reading the config 1011 * descriptor and if we have only one bulk pipe it is in boot mode 1012 */ 1013 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1014 1015 /* Default to type 2 i2c */ 1016 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1017 1018 status = choose_config(serial->serial->dev); 1019 if (status) 1020 return status; 1021 1022 interface = &serial->serial->interface->cur_altsetting->desc; 1023 if (!interface) { 1024 dev_err(dev, "%s - no interface set, error!\n", __func__); 1025 return -ENODEV; 1026 } 1027 1028 /* 1029 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1030 * if we have more than one endpoint we are definitely in download 1031 * mode 1032 */ 1033 if (interface->bNumEndpoints > 1) 1034 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1035 else 1036 /* Otherwise we will remain in configuring mode */ 1037 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1038 1039 /********************************************************************/ 1040 /* Download Mode */ 1041 /********************************************************************/ 1042 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1043 struct ti_i2c_desc *rom_desc; 1044 1045 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1046 1047 status = check_i2c_image(serial); 1048 if (status) { 1049 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1050 return status; 1051 } 1052 1053 /* Validate Hardware version number 1054 * Read Manufacturing Descriptor from TI Based Edgeport 1055 */ 1056 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1057 if (!ti_manuf_desc) { 1058 dev_err(dev, "%s - out of memory.\n", __func__); 1059 return -ENOMEM; 1060 } 1061 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1062 if (status) { 1063 kfree(ti_manuf_desc); 1064 return status; 1065 } 1066 1067 /* Check version number of ION descriptor */ 1068 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1069 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1070 __func__, ti_cpu_rev(ti_manuf_desc)); 1071 kfree(ti_manuf_desc); 1072 return -EINVAL; 1073 } 1074 1075 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1076 if (!rom_desc) { 1077 dev_err(dev, "%s - out of memory.\n", __func__); 1078 kfree(ti_manuf_desc); 1079 return -ENOMEM; 1080 } 1081 1082 /* Search for type 2 record (firmware record) */ 1083 start_address = get_descriptor_addr(serial, 1084 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1085 if (start_address != 0) { 1086 struct ti_i2c_firmware_rec *firmware_version; 1087 u8 *record; 1088 1089 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1090 1091 firmware_version = kmalloc(sizeof(*firmware_version), 1092 GFP_KERNEL); 1093 if (!firmware_version) { 1094 dev_err(dev, "%s - out of memory.\n", __func__); 1095 kfree(rom_desc); 1096 kfree(ti_manuf_desc); 1097 return -ENOMEM; 1098 } 1099 1100 /* Validate version number 1101 * Read the descriptor data 1102 */ 1103 status = read_rom(serial, start_address + 1104 sizeof(struct ti_i2c_desc), 1105 sizeof(struct ti_i2c_firmware_rec), 1106 (__u8 *)firmware_version); 1107 if (status) { 1108 kfree(firmware_version); 1109 kfree(rom_desc); 1110 kfree(ti_manuf_desc); 1111 return status; 1112 } 1113 1114 /* Check version number of download with current 1115 version in I2c */ 1116 download_cur_ver = (firmware_version->Ver_Major << 8) + 1117 (firmware_version->Ver_Minor); 1118 download_new_ver = (OperationalMajorVersion << 8) + 1119 (OperationalMinorVersion); 1120 1121 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1122 __func__, firmware_version->Ver_Major, 1123 firmware_version->Ver_Minor, 1124 OperationalMajorVersion, 1125 OperationalMinorVersion); 1126 1127 /* Check if we have an old version in the I2C and 1128 update if necessary */ 1129 if (download_cur_ver < download_new_ver) { 1130 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1131 __func__, 1132 firmware_version->Ver_Major, 1133 firmware_version->Ver_Minor, 1134 OperationalMajorVersion, 1135 OperationalMinorVersion); 1136 1137 record = kmalloc(1, GFP_KERNEL); 1138 if (!record) { 1139 dev_err(dev, "%s - out of memory.\n", 1140 __func__); 1141 kfree(firmware_version); 1142 kfree(rom_desc); 1143 kfree(ti_manuf_desc); 1144 return -ENOMEM; 1145 } 1146 /* In order to update the I2C firmware we must 1147 * change the type 2 record to type 0xF2. This 1148 * will force the UMP to come up in Boot Mode. 1149 * Then while in boot mode, the driver will 1150 * download the latest firmware (padded to 1151 * 15.5k) into the UMP ram. Finally when the 1152 * device comes back up in download mode the 1153 * driver will cause the new firmware to be 1154 * copied from the UMP Ram to I2C and the 1155 * firmware will update the record type from 1156 * 0xf2 to 0x02. 1157 */ 1158 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1159 1160 /* Change the I2C Firmware record type to 1161 0xf2 to trigger an update */ 1162 status = write_rom(serial, start_address, 1163 sizeof(*record), record); 1164 if (status) { 1165 kfree(record); 1166 kfree(firmware_version); 1167 kfree(rom_desc); 1168 kfree(ti_manuf_desc); 1169 return status; 1170 } 1171 1172 /* verify the write -- must do this in order 1173 * for write to complete before we do the 1174 * hardware reset 1175 */ 1176 status = read_rom(serial, 1177 start_address, 1178 sizeof(*record), 1179 record); 1180 if (status) { 1181 kfree(record); 1182 kfree(firmware_version); 1183 kfree(rom_desc); 1184 kfree(ti_manuf_desc); 1185 return status; 1186 } 1187 1188 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1189 dev_err(dev, "%s - error resetting device\n", __func__); 1190 kfree(record); 1191 kfree(firmware_version); 1192 kfree(rom_desc); 1193 kfree(ti_manuf_desc); 1194 return -ENODEV; 1195 } 1196 1197 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1198 1199 /* Reset UMP -- Back to BOOT MODE */ 1200 status = ti_vsend_sync(serial->serial->dev, 1201 UMPC_HARDWARE_RESET, 1202 0, 0, NULL, 0); 1203 1204 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1205 1206 /* return an error on purpose. */ 1207 kfree(record); 1208 kfree(firmware_version); 1209 kfree(rom_desc); 1210 kfree(ti_manuf_desc); 1211 return -ENODEV; 1212 } 1213 kfree(firmware_version); 1214 } 1215 /* Search for type 0xF2 record (firmware blank record) */ 1216 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1217#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1218 sizeof(struct ti_i2c_firmware_rec)) 1219 __u8 *header; 1220 __u8 *vheader; 1221 1222 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1223 if (!header) { 1224 dev_err(dev, "%s - out of memory.\n", __func__); 1225 kfree(rom_desc); 1226 kfree(ti_manuf_desc); 1227 return -ENOMEM; 1228 } 1229 1230 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1231 if (!vheader) { 1232 dev_err(dev, "%s - out of memory.\n", __func__); 1233 kfree(header); 1234 kfree(rom_desc); 1235 kfree(ti_manuf_desc); 1236 return -ENOMEM; 1237 } 1238 1239 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1240 1241 /* 1242 * In order to update the I2C firmware we must change 1243 * the type 2 record to type 0xF2. This will force the 1244 * UMP to come up in Boot Mode. Then while in boot 1245 * mode, the driver will download the latest firmware 1246 * (padded to 15.5k) into the UMP ram. Finally when the 1247 * device comes back up in download mode the driver 1248 * will cause the new firmware to be copied from the 1249 * UMP Ram to I2C and the firmware will update the 1250 * record type from 0xf2 to 0x02. 1251 */ 1252 status = build_i2c_fw_hdr(header, dev); 1253 if (status) { 1254 kfree(vheader); 1255 kfree(header); 1256 kfree(rom_desc); 1257 kfree(ti_manuf_desc); 1258 return -EINVAL; 1259 } 1260 1261 /* Update I2C with type 0xf2 record with correct 1262 size and checksum */ 1263 status = write_rom(serial, 1264 start_address, 1265 HEADER_SIZE, 1266 header); 1267 if (status) { 1268 kfree(vheader); 1269 kfree(header); 1270 kfree(rom_desc); 1271 kfree(ti_manuf_desc); 1272 return -EINVAL; 1273 } 1274 1275 /* verify the write -- must do this in order for 1276 write to complete before we do the hardware reset */ 1277 status = read_rom(serial, start_address, 1278 HEADER_SIZE, vheader); 1279 1280 if (status) { 1281 dev_dbg(dev, "%s - can't read header back\n", __func__); 1282 kfree(vheader); 1283 kfree(header); 1284 kfree(rom_desc); 1285 kfree(ti_manuf_desc); 1286 return status; 1287 } 1288 if (memcmp(vheader, header, HEADER_SIZE)) { 1289 dev_dbg(dev, "%s - write download record failed\n", __func__); 1290 kfree(vheader); 1291 kfree(header); 1292 kfree(rom_desc); 1293 kfree(ti_manuf_desc); 1294 return -EINVAL; 1295 } 1296 1297 kfree(vheader); 1298 kfree(header); 1299 1300 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1301 1302 /* Tell firmware to copy download image into I2C */ 1303 status = ti_vsend_sync(serial->serial->dev, 1304 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1305 1306 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1307 if (status) { 1308 dev_err(dev, 1309 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1310 __func__); 1311 kfree(rom_desc); 1312 kfree(ti_manuf_desc); 1313 return status; 1314 } 1315 } 1316 1317 // The device is running the download code 1318 kfree(rom_desc); 1319 kfree(ti_manuf_desc); 1320 return 0; 1321 } 1322 1323 /********************************************************************/ 1324 /* Boot Mode */ 1325 /********************************************************************/ 1326 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1327 1328 /* Configure the TI device so we can use the BULK pipes for download */ 1329 status = config_boot_dev(serial->serial->dev); 1330 if (status) 1331 return status; 1332 1333 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1334 != USB_VENDOR_ID_ION) { 1335 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1336 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1337 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1338 goto stayinbootmode; 1339 } 1340 1341 /* We have an ION device (I2c Must be programmed) 1342 Determine I2C image type */ 1343 if (i2c_type_bootmode(serial)) 1344 goto stayinbootmode; 1345 1346 /* Check for ION Vendor ID and that the I2C is valid */ 1347 if (!check_i2c_image(serial)) { 1348 struct ti_i2c_image_header *header; 1349 int i; 1350 __u8 cs = 0; 1351 __u8 *buffer; 1352 int buffer_size; 1353 int err; 1354 const struct firmware *fw; 1355 const char *fw_name = "edgeport/down3.bin"; 1356 1357 /* Validate Hardware version number 1358 * Read Manufacturing Descriptor from TI Based Edgeport 1359 */ 1360 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1361 if (!ti_manuf_desc) { 1362 dev_err(dev, "%s - out of memory.\n", __func__); 1363 return -ENOMEM; 1364 } 1365 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1366 if (status) { 1367 kfree(ti_manuf_desc); 1368 goto stayinbootmode; 1369 } 1370 1371 /* Check for version 2 */ 1372 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1373 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1374 __func__, ti_cpu_rev(ti_manuf_desc)); 1375 kfree(ti_manuf_desc); 1376 goto stayinbootmode; 1377 } 1378 1379 kfree(ti_manuf_desc); 1380 1381 /* 1382 * In order to update the I2C firmware we must change the type 1383 * 2 record to type 0xF2. This will force the UMP to come up 1384 * in Boot Mode. Then while in boot mode, the driver will 1385 * download the latest firmware (padded to 15.5k) into the 1386 * UMP ram. Finally when the device comes back up in download 1387 * mode the driver will cause the new firmware to be copied 1388 * from the UMP Ram to I2C and the firmware will update the 1389 * record type from 0xf2 to 0x02. 1390 * 1391 * Do we really have to copy the whole firmware image, 1392 * or could we do this in place! 1393 */ 1394 1395 /* Allocate a 15.5k buffer + 3 byte header */ 1396 buffer_size = (((1024 * 16) - 512) + 1397 sizeof(struct ti_i2c_image_header)); 1398 buffer = kmalloc(buffer_size, GFP_KERNEL); 1399 if (!buffer) { 1400 dev_err(dev, "%s - out of memory\n", __func__); 1401 return -ENOMEM; 1402 } 1403 1404 /* Initialize the buffer to 0xff (pad the buffer) */ 1405 memset(buffer, 0xff, buffer_size); 1406 1407 err = request_firmware(&fw, fw_name, dev); 1408 if (err) { 1409 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 1410 fw_name, err); 1411 kfree(buffer); 1412 return err; 1413 } 1414 memcpy(buffer, &fw->data[4], fw->size - 4); 1415 release_firmware(fw); 1416 1417 for (i = sizeof(struct ti_i2c_image_header); 1418 i < buffer_size; i++) { 1419 cs = (__u8)(cs + buffer[i]); 1420 } 1421 1422 header = (struct ti_i2c_image_header *)buffer; 1423 1424 /* update length and checksum after padding */ 1425 header->Length = cpu_to_le16((__u16)(buffer_size - 1426 sizeof(struct ti_i2c_image_header))); 1427 header->CheckSum = cs; 1428 1429 /* Download the operational code */ 1430 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1431 status = download_code(serial, buffer, buffer_size); 1432 1433 kfree(buffer); 1434 1435 if (status) { 1436 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1437 return status; 1438 } 1439 1440 /* Device will reboot */ 1441 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1442 1443 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1444 1445 /* return an error on purpose */ 1446 return -ENODEV; 1447 } 1448 1449stayinbootmode: 1450 /* Eprom is invalid or blank stay in boot mode */ 1451 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1452 serial->product_info.TiMode = TI_MODE_BOOT; 1453 1454 return 0; 1455} 1456 1457 1458static int ti_do_config(struct edgeport_port *port, int feature, int on) 1459{ 1460 int port_number = port->port->number - port->port->serial->minor; 1461 on = !!on; /* 1 or 0 not bitmask */ 1462 return send_cmd(port->port->serial->dev, 1463 feature, (__u8)(UMPM_UART1_PORT + port_number), 1464 on, NULL, 0); 1465} 1466 1467 1468static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1469{ 1470 int status = 0; 1471 1472 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1473 1474 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1475 if (status) 1476 return status; 1477 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1478 if (status) 1479 return status; 1480 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1481} 1482 1483/* Convert TI LSR to standard UART flags */ 1484static __u8 map_line_status(__u8 ti_lsr) 1485{ 1486 __u8 lsr = 0; 1487 1488#define MAP_FLAG(flagUmp, flagUart) \ 1489 if (ti_lsr & flagUmp) \ 1490 lsr |= flagUart; 1491 1492 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1493 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1494 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1495 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1496 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1497 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1498 1499#undef MAP_FLAG 1500 1501 return lsr; 1502} 1503 1504static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1505{ 1506 struct async_icount *icount; 1507 struct tty_struct *tty; 1508 1509 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1510 1511 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1512 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1513 icount = &edge_port->icount; 1514 1515 /* update input line counters */ 1516 if (msr & EDGEPORT_MSR_DELTA_CTS) 1517 icount->cts++; 1518 if (msr & EDGEPORT_MSR_DELTA_DSR) 1519 icount->dsr++; 1520 if (msr & EDGEPORT_MSR_DELTA_CD) 1521 icount->dcd++; 1522 if (msr & EDGEPORT_MSR_DELTA_RI) 1523 icount->rng++; 1524 wake_up_interruptible(&edge_port->delta_msr_wait); 1525 } 1526 1527 /* Save the new modem status */ 1528 edge_port->shadow_msr = msr & 0xf0; 1529 1530 tty = tty_port_tty_get(&edge_port->port->port); 1531 /* handle CTS flow control */ 1532 if (tty && C_CRTSCTS(tty)) { 1533 if (msr & EDGEPORT_MSR_CTS) { 1534 tty->hw_stopped = 0; 1535 tty_wakeup(tty); 1536 } else { 1537 tty->hw_stopped = 1; 1538 } 1539 } 1540 tty_kref_put(tty); 1541} 1542 1543static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1544 __u8 lsr, __u8 data) 1545{ 1546 struct async_icount *icount; 1547 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1548 LSR_FRM_ERR | LSR_BREAK)); 1549 struct tty_struct *tty; 1550 1551 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1552 1553 edge_port->shadow_lsr = lsr; 1554 1555 if (new_lsr & LSR_BREAK) 1556 /* 1557 * Parity and Framing errors only count if they 1558 * occur exclusive of a break being received. 1559 */ 1560 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1561 1562 /* Place LSR data byte into Rx buffer */ 1563 if (lsr_data) { 1564 tty = tty_port_tty_get(&edge_port->port->port); 1565 if (tty) { 1566 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1567 tty_kref_put(tty); 1568 } 1569 } 1570 1571 /* update input line counters */ 1572 icount = &edge_port->icount; 1573 if (new_lsr & LSR_BREAK) 1574 icount->brk++; 1575 if (new_lsr & LSR_OVER_ERR) 1576 icount->overrun++; 1577 if (new_lsr & LSR_PAR_ERR) 1578 icount->parity++; 1579 if (new_lsr & LSR_FRM_ERR) 1580 icount->frame++; 1581} 1582 1583 1584static void edge_interrupt_callback(struct urb *urb) 1585{ 1586 struct edgeport_serial *edge_serial = urb->context; 1587 struct usb_serial_port *port; 1588 struct edgeport_port *edge_port; 1589 struct device *dev; 1590 unsigned char *data = urb->transfer_buffer; 1591 int length = urb->actual_length; 1592 int port_number; 1593 int function; 1594 int retval; 1595 __u8 lsr; 1596 __u8 msr; 1597 int status = urb->status; 1598 1599 switch (status) { 1600 case 0: 1601 /* success */ 1602 break; 1603 case -ECONNRESET: 1604 case -ENOENT: 1605 case -ESHUTDOWN: 1606 /* this urb is terminated, clean up */ 1607 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1608 __func__, status); 1609 return; 1610 default: 1611 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1612 "%d\n", __func__, status); 1613 goto exit; 1614 } 1615 1616 if (!length) { 1617 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1618 goto exit; 1619 } 1620 1621 dev = &edge_serial->serial->dev->dev; 1622 usb_serial_debug_data(dev, __func__, length, data); 1623 1624 if (length != 2) { 1625 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1626 goto exit; 1627 } 1628 1629 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1630 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1631 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1632 port_number, function, data[1]); 1633 port = edge_serial->serial->port[port_number]; 1634 edge_port = usb_get_serial_port_data(port); 1635 if (!edge_port) { 1636 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1637 return; 1638 } 1639 switch (function) { 1640 case TIUMP_INTERRUPT_CODE_LSR: 1641 lsr = map_line_status(data[1]); 1642 if (lsr & UMP_UART_LSR_DATA_MASK) { 1643 /* Save the LSR event for bulk read 1644 completion routine */ 1645 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1646 __func__, port_number, lsr); 1647 edge_port->lsr_event = 1; 1648 edge_port->lsr_mask = lsr; 1649 } else { 1650 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1651 __func__, port_number, lsr); 1652 handle_new_lsr(edge_port, 0, lsr, 0); 1653 } 1654 break; 1655 1656 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1657 /* Copy MSR from UMP */ 1658 msr = data[1]; 1659 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1660 __func__, port_number, msr); 1661 handle_new_msr(edge_port, msr); 1662 break; 1663 1664 default: 1665 dev_err(&urb->dev->dev, 1666 "%s - Unknown Interrupt code from UMP %x\n", 1667 __func__, data[1]); 1668 break; 1669 1670 } 1671 1672exit: 1673 retval = usb_submit_urb(urb, GFP_ATOMIC); 1674 if (retval) 1675 dev_err(&urb->dev->dev, 1676 "%s - usb_submit_urb failed with result %d\n", 1677 __func__, retval); 1678} 1679 1680static void edge_bulk_in_callback(struct urb *urb) 1681{ 1682 struct edgeport_port *edge_port = urb->context; 1683 struct device *dev = &edge_port->port->dev; 1684 unsigned char *data = urb->transfer_buffer; 1685 struct tty_struct *tty; 1686 int retval = 0; 1687 int port_number; 1688 int status = urb->status; 1689 1690 switch (status) { 1691 case 0: 1692 /* success */ 1693 break; 1694 case -ECONNRESET: 1695 case -ENOENT: 1696 case -ESHUTDOWN: 1697 /* this urb is terminated, clean up */ 1698 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1699 return; 1700 default: 1701 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1702 } 1703 1704 if (status == -EPIPE) 1705 goto exit; 1706 1707 if (status) { 1708 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1709 return; 1710 } 1711 1712 port_number = edge_port->port->number - edge_port->port->serial->minor; 1713 1714 if (edge_port->lsr_event) { 1715 edge_port->lsr_event = 0; 1716 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1717 __func__, port_number, edge_port->lsr_mask, *data); 1718 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1719 /* Adjust buffer length/pointer */ 1720 --urb->actual_length; 1721 ++data; 1722 } 1723 1724 tty = tty_port_tty_get(&edge_port->port->port); 1725 if (tty && urb->actual_length) { 1726 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1727 if (edge_port->close_pending) 1728 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1729 __func__); 1730 else 1731 edge_tty_recv(dev, tty, data, urb->actual_length); 1732 edge_port->icount.rx += urb->actual_length; 1733 } 1734 tty_kref_put(tty); 1735 1736exit: 1737 /* continue read unless stopped */ 1738 spin_lock(&edge_port->ep_lock); 1739 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1740 retval = usb_submit_urb(urb, GFP_ATOMIC); 1741 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1742 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1743 1744 spin_unlock(&edge_port->ep_lock); 1745 if (retval) 1746 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1747} 1748 1749static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1750 unsigned char *data, int length) 1751{ 1752 int queued; 1753 1754 queued = tty_insert_flip_string(tty, data, length); 1755 if (queued < length) 1756 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1757 __func__, length - queued); 1758 tty_flip_buffer_push(tty); 1759} 1760 1761static void edge_bulk_out_callback(struct urb *urb) 1762{ 1763 struct usb_serial_port *port = urb->context; 1764 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1765 int status = urb->status; 1766 struct tty_struct *tty; 1767 1768 edge_port->ep_write_urb_in_use = 0; 1769 1770 switch (status) { 1771 case 0: 1772 /* success */ 1773 break; 1774 case -ECONNRESET: 1775 case -ENOENT: 1776 case -ESHUTDOWN: 1777 /* this urb is terminated, clean up */ 1778 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1779 __func__, status); 1780 return; 1781 default: 1782 dev_err_console(port, "%s - nonzero write bulk status " 1783 "received: %d\n", __func__, status); 1784 } 1785 1786 /* send any buffered data */ 1787 tty = tty_port_tty_get(&port->port); 1788 edge_send(tty); 1789 tty_kref_put(tty); 1790} 1791 1792static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1793{ 1794 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1795 struct edgeport_serial *edge_serial; 1796 struct usb_device *dev; 1797 struct urb *urb; 1798 int port_number; 1799 int status; 1800 u16 open_settings; 1801 u8 transaction_timeout; 1802 1803 if (edge_port == NULL) 1804 return -ENODEV; 1805 1806 port_number = port->number - port->serial->minor; 1807 switch (port_number) { 1808 case 0: 1809 edge_port->uart_base = UMPMEM_BASE_UART1; 1810 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1811 break; 1812 case 1: 1813 edge_port->uart_base = UMPMEM_BASE_UART2; 1814 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1815 break; 1816 default: 1817 dev_err(&port->dev, "Unknown port number!!!\n"); 1818 return -ENODEV; 1819 } 1820 1821 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1822 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1823 1824 dev = port->serial->dev; 1825 1826 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1827 init_waitqueue_head(&edge_port->delta_msr_wait); 1828 1829 /* turn off loopback */ 1830 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1831 if (status) { 1832 dev_err(&port->dev, 1833 "%s - cannot send clear loopback command, %d\n", 1834 __func__, status); 1835 return status; 1836 } 1837 1838 /* set up the port settings */ 1839 if (tty) 1840 edge_set_termios(tty, port, tty->termios); 1841 1842 /* open up the port */ 1843 1844 /* milliseconds to timeout for DMA transfer */ 1845 transaction_timeout = 2; 1846 1847 edge_port->ump_read_timeout = 1848 max(20, ((transaction_timeout * 3) / 2)); 1849 1850 /* milliseconds to timeout for DMA transfer */ 1851 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1852 UMP_PIPE_TRANS_TIMEOUT_ENA | 1853 (transaction_timeout << 2)); 1854 1855 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1856 1857 /* Tell TI to open and start the port */ 1858 status = send_cmd(dev, UMPC_OPEN_PORT, 1859 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1860 if (status) { 1861 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1862 __func__, status); 1863 return status; 1864 } 1865 1866 /* Start the DMA? */ 1867 status = send_cmd(dev, UMPC_START_PORT, 1868 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1869 if (status) { 1870 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1871 __func__, status); 1872 return status; 1873 } 1874 1875 /* Clear TX and RX buffers in UMP */ 1876 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1877 if (status) { 1878 dev_err(&port->dev, 1879 "%s - cannot send clear buffers command, %d\n", 1880 __func__, status); 1881 return status; 1882 } 1883 1884 /* Read Initial MSR */ 1885 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1886 (__u16)(UMPM_UART1_PORT + port_number), 1887 &edge_port->shadow_msr, 1); 1888 if (status) { 1889 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1890 __func__, status); 1891 return status; 1892 } 1893 1894 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1895 1896 /* Set Initial MCR */ 1897 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1898 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1899 1900 edge_serial = edge_port->edge_serial; 1901 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1902 return -ERESTARTSYS; 1903 if (edge_serial->num_ports_open == 0) { 1904 /* we are the first port to open, post the interrupt urb */ 1905 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1906 if (!urb) { 1907 dev_err(&port->dev, 1908 "%s - no interrupt urb present, exiting\n", 1909 __func__); 1910 status = -EINVAL; 1911 goto release_es_lock; 1912 } 1913 urb->context = edge_serial; 1914 status = usb_submit_urb(urb, GFP_KERNEL); 1915 if (status) { 1916 dev_err(&port->dev, 1917 "%s - usb_submit_urb failed with value %d\n", 1918 __func__, status); 1919 goto release_es_lock; 1920 } 1921 } 1922 1923 /* 1924 * reset the data toggle on the bulk endpoints to work around bug in 1925 * host controllers where things get out of sync some times 1926 */ 1927 usb_clear_halt(dev, port->write_urb->pipe); 1928 usb_clear_halt(dev, port->read_urb->pipe); 1929 1930 /* start up our bulk read urb */ 1931 urb = port->read_urb; 1932 if (!urb) { 1933 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1934 __func__); 1935 status = -EINVAL; 1936 goto unlink_int_urb; 1937 } 1938 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1939 urb->context = edge_port; 1940 status = usb_submit_urb(urb, GFP_KERNEL); 1941 if (status) { 1942 dev_err(&port->dev, 1943 "%s - read bulk usb_submit_urb failed with value %d\n", 1944 __func__, status); 1945 goto unlink_int_urb; 1946 } 1947 1948 ++edge_serial->num_ports_open; 1949 1950 goto release_es_lock; 1951 1952unlink_int_urb: 1953 if (edge_port->edge_serial->num_ports_open == 0) 1954 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1955release_es_lock: 1956 mutex_unlock(&edge_serial->es_lock); 1957 return status; 1958} 1959 1960static void edge_close(struct usb_serial_port *port) 1961{ 1962 struct edgeport_serial *edge_serial; 1963 struct edgeport_port *edge_port; 1964 struct usb_serial *serial = port->serial; 1965 int port_number; 1966 1967 edge_serial = usb_get_serial_data(port->serial); 1968 edge_port = usb_get_serial_port_data(port); 1969 if (edge_serial == NULL || edge_port == NULL) 1970 return; 1971 1972 /* The bulkreadcompletion routine will check 1973 * this flag and dump add read data */ 1974 edge_port->close_pending = 1; 1975 1976 /* chase the port close and flush */ 1977 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 1978 1979 usb_kill_urb(port->read_urb); 1980 usb_kill_urb(port->write_urb); 1981 edge_port->ep_write_urb_in_use = 0; 1982 1983 /* assuming we can still talk to the device, 1984 * send a close port command to it */ 1985 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1986 port_number = port->number - port->serial->minor; 1987 1988 mutex_lock(&serial->disc_mutex); 1989 if (!serial->disconnected) { 1990 send_cmd(serial->dev, 1991 UMPC_CLOSE_PORT, 1992 (__u8)(UMPM_UART1_PORT + port_number), 1993 0, 1994 NULL, 1995 0); 1996 } 1997 mutex_unlock(&serial->disc_mutex); 1998 1999 mutex_lock(&edge_serial->es_lock); 2000 --edge_port->edge_serial->num_ports_open; 2001 if (edge_port->edge_serial->num_ports_open <= 0) { 2002 /* last port is now closed, let's shut down our interrupt urb */ 2003 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2004 edge_port->edge_serial->num_ports_open = 0; 2005 } 2006 mutex_unlock(&edge_serial->es_lock); 2007 edge_port->close_pending = 0; 2008} 2009 2010static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2011 const unsigned char *data, int count) 2012{ 2013 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2014 2015 if (count == 0) { 2016 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2017 return 0; 2018 } 2019 2020 if (edge_port == NULL) 2021 return -ENODEV; 2022 if (edge_port->close_pending == 1) 2023 return -ENODEV; 2024 2025 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2026 &edge_port->ep_lock); 2027 edge_send(tty); 2028 2029 return count; 2030} 2031 2032static void edge_send(struct tty_struct *tty) 2033{ 2034 struct usb_serial_port *port = tty->driver_data; 2035 int count, result; 2036 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2037 unsigned long flags; 2038 2039 spin_lock_irqsave(&edge_port->ep_lock, flags); 2040 2041 if (edge_port->ep_write_urb_in_use) { 2042 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2043 return; 2044 } 2045 2046 count = kfifo_out(&edge_port->write_fifo, 2047 port->write_urb->transfer_buffer, 2048 port->bulk_out_size); 2049 2050 if (count == 0) { 2051 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2052 return; 2053 } 2054 2055 edge_port->ep_write_urb_in_use = 1; 2056 2057 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2058 2059 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2060 2061 /* set up our urb */ 2062 port->write_urb->transfer_buffer_length = count; 2063 2064 /* send the data out the bulk port */ 2065 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2066 if (result) { 2067 dev_err_console(port, 2068 "%s - failed submitting write urb, error %d\n", 2069 __func__, result); 2070 edge_port->ep_write_urb_in_use = 0; 2071 /* TODO: reschedule edge_send */ 2072 } else 2073 edge_port->icount.tx += count; 2074 2075 /* wakeup any process waiting for writes to complete */ 2076 /* there is now more room in the buffer for new writes */ 2077 if (tty) 2078 tty_wakeup(tty); 2079} 2080 2081static int edge_write_room(struct tty_struct *tty) 2082{ 2083 struct usb_serial_port *port = tty->driver_data; 2084 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2085 int room = 0; 2086 unsigned long flags; 2087 2088 if (edge_port == NULL) 2089 return 0; 2090 if (edge_port->close_pending == 1) 2091 return 0; 2092 2093 spin_lock_irqsave(&edge_port->ep_lock, flags); 2094 room = kfifo_avail(&edge_port->write_fifo); 2095 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2096 2097 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2098 return room; 2099} 2100 2101static int edge_chars_in_buffer(struct tty_struct *tty) 2102{ 2103 struct usb_serial_port *port = tty->driver_data; 2104 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2105 int chars = 0; 2106 unsigned long flags; 2107 2108 if (edge_port == NULL) 2109 return 0; 2110 if (edge_port->close_pending == 1) 2111 return 0; 2112 2113 spin_lock_irqsave(&edge_port->ep_lock, flags); 2114 chars = kfifo_len(&edge_port->write_fifo); 2115 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2116 2117 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2118 return chars; 2119} 2120 2121static void edge_throttle(struct tty_struct *tty) 2122{ 2123 struct usb_serial_port *port = tty->driver_data; 2124 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2125 int status; 2126 2127 if (edge_port == NULL) 2128 return; 2129 2130 /* if we are implementing XON/XOFF, send the stop character */ 2131 if (I_IXOFF(tty)) { 2132 unsigned char stop_char = STOP_CHAR(tty); 2133 status = edge_write(tty, port, &stop_char, 1); 2134 if (status <= 0) { 2135 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2136 } 2137 } 2138 2139 /* if we are implementing RTS/CTS, stop reads */ 2140 /* and the Edgeport will clear the RTS line */ 2141 if (C_CRTSCTS(tty)) 2142 stop_read(edge_port); 2143 2144} 2145 2146static void edge_unthrottle(struct tty_struct *tty) 2147{ 2148 struct usb_serial_port *port = tty->driver_data; 2149 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2150 int status; 2151 2152 if (edge_port == NULL) 2153 return; 2154 2155 /* if we are implementing XON/XOFF, send the start character */ 2156 if (I_IXOFF(tty)) { 2157 unsigned char start_char = START_CHAR(tty); 2158 status = edge_write(tty, port, &start_char, 1); 2159 if (status <= 0) { 2160 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2161 } 2162 } 2163 /* if we are implementing RTS/CTS, restart reads */ 2164 /* are the Edgeport will assert the RTS line */ 2165 if (C_CRTSCTS(tty)) { 2166 status = restart_read(edge_port); 2167 if (status) 2168 dev_err(&port->dev, 2169 "%s - read bulk usb_submit_urb failed: %d\n", 2170 __func__, status); 2171 } 2172 2173} 2174 2175static void stop_read(struct edgeport_port *edge_port) 2176{ 2177 unsigned long flags; 2178 2179 spin_lock_irqsave(&edge_port->ep_lock, flags); 2180 2181 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2182 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2183 edge_port->shadow_mcr &= ~MCR_RTS; 2184 2185 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2186} 2187 2188static int restart_read(struct edgeport_port *edge_port) 2189{ 2190 struct urb *urb; 2191 int status = 0; 2192 unsigned long flags; 2193 2194 spin_lock_irqsave(&edge_port->ep_lock, flags); 2195 2196 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2197 urb = edge_port->port->read_urb; 2198 status = usb_submit_urb(urb, GFP_ATOMIC); 2199 } 2200 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2201 edge_port->shadow_mcr |= MCR_RTS; 2202 2203 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2204 2205 return status; 2206} 2207 2208static void change_port_settings(struct tty_struct *tty, 2209 struct edgeport_port *edge_port, struct ktermios *old_termios) 2210{ 2211 struct device *dev = &edge_port->port->dev; 2212 struct ump_uart_config *config; 2213 int baud; 2214 unsigned cflag; 2215 int status; 2216 int port_number = edge_port->port->number - 2217 edge_port->port->serial->minor; 2218 2219 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2220 2221 config = kmalloc (sizeof (*config), GFP_KERNEL); 2222 if (!config) { 2223 *tty->termios = *old_termios; 2224 dev_err(dev, "%s - out of memory\n", __func__); 2225 return; 2226 } 2227 2228 cflag = tty->termios->c_cflag; 2229 2230 config->wFlags = 0; 2231 2232 /* These flags must be set */ 2233 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2234 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2235 config->bUartMode = (__u8)(edge_port->bUartMode); 2236 2237 switch (cflag & CSIZE) { 2238 case CS5: 2239 config->bDataBits = UMP_UART_CHAR5BITS; 2240 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2241 break; 2242 case CS6: 2243 config->bDataBits = UMP_UART_CHAR6BITS; 2244 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2245 break; 2246 case CS7: 2247 config->bDataBits = UMP_UART_CHAR7BITS; 2248 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2249 break; 2250 default: 2251 case CS8: 2252 config->bDataBits = UMP_UART_CHAR8BITS; 2253 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2254 break; 2255 } 2256 2257 if (cflag & PARENB) { 2258 if (cflag & PARODD) { 2259 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2260 config->bParity = UMP_UART_ODDPARITY; 2261 dev_dbg(dev, "%s - parity = odd\n", __func__); 2262 } else { 2263 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2264 config->bParity = UMP_UART_EVENPARITY; 2265 dev_dbg(dev, "%s - parity = even\n", __func__); 2266 } 2267 } else { 2268 config->bParity = UMP_UART_NOPARITY; 2269 dev_dbg(dev, "%s - parity = none\n", __func__); 2270 } 2271 2272 if (cflag & CSTOPB) { 2273 config->bStopBits = UMP_UART_STOPBIT2; 2274 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2275 } else { 2276 config->bStopBits = UMP_UART_STOPBIT1; 2277 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2278 } 2279 2280 /* figure out the flow control settings */ 2281 if (cflag & CRTSCTS) { 2282 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2283 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2284 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2285 } else { 2286 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2287 tty->hw_stopped = 0; 2288 restart_read(edge_port); 2289 } 2290 2291 /* if we are implementing XON/XOFF, set the start and stop 2292 character in the device */ 2293 config->cXon = START_CHAR(tty); 2294 config->cXoff = STOP_CHAR(tty); 2295 2296 /* if we are implementing INBOUND XON/XOFF */ 2297 if (I_IXOFF(tty)) { 2298 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2299 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2300 __func__, config->cXon, config->cXoff); 2301 } else 2302 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2303 2304 /* if we are implementing OUTBOUND XON/XOFF */ 2305 if (I_IXON(tty)) { 2306 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2307 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2308 __func__, config->cXon, config->cXoff); 2309 } else 2310 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2311 2312 tty->termios->c_cflag &= ~CMSPAR; 2313 2314 /* Round the baud rate */ 2315 baud = tty_get_baud_rate(tty); 2316 if (!baud) { 2317 /* pick a default, any default... */ 2318 baud = 9600; 2319 } else 2320 tty_encode_baud_rate(tty, baud, baud); 2321 2322 edge_port->baud_rate = baud; 2323 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2324 2325 /* FIXME: Recompute actual baud from divisor here */ 2326 2327 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2328 2329 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2330 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2331 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2332 dev_dbg(dev, "bParity: %d\n", config->bParity); 2333 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2334 dev_dbg(dev, "cXon: %d\n", config->cXon); 2335 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2336 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2337 2338 /* move the word values into big endian mode */ 2339 cpu_to_be16s(&config->wFlags); 2340 cpu_to_be16s(&config->wBaudRate); 2341 2342 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2343 (__u8)(UMPM_UART1_PORT + port_number), 2344 0, (__u8 *)config, sizeof(*config)); 2345 if (status) 2346 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2347 __func__, status); 2348 kfree(config); 2349} 2350 2351static void edge_set_termios(struct tty_struct *tty, 2352 struct usb_serial_port *port, struct ktermios *old_termios) 2353{ 2354 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2355 unsigned int cflag; 2356 2357 cflag = tty->termios->c_cflag; 2358 2359 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2360 tty->termios->c_cflag, tty->termios->c_iflag); 2361 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2362 old_termios->c_cflag, old_termios->c_iflag); 2363 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2364 2365 if (edge_port == NULL) 2366 return; 2367 /* change the port settings to the new ones specified */ 2368 change_port_settings(tty, edge_port, old_termios); 2369} 2370 2371static int edge_tiocmset(struct tty_struct *tty, 2372 unsigned int set, unsigned int clear) 2373{ 2374 struct usb_serial_port *port = tty->driver_data; 2375 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2376 unsigned int mcr; 2377 unsigned long flags; 2378 2379 spin_lock_irqsave(&edge_port->ep_lock, flags); 2380 mcr = edge_port->shadow_mcr; 2381 if (set & TIOCM_RTS) 2382 mcr |= MCR_RTS; 2383 if (set & TIOCM_DTR) 2384 mcr |= MCR_DTR; 2385 if (set & TIOCM_LOOP) 2386 mcr |= MCR_LOOPBACK; 2387 2388 if (clear & TIOCM_RTS) 2389 mcr &= ~MCR_RTS; 2390 if (clear & TIOCM_DTR) 2391 mcr &= ~MCR_DTR; 2392 if (clear & TIOCM_LOOP) 2393 mcr &= ~MCR_LOOPBACK; 2394 2395 edge_port->shadow_mcr = mcr; 2396 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2397 2398 restore_mcr(edge_port, mcr); 2399 return 0; 2400} 2401 2402static int edge_tiocmget(struct tty_struct *tty) 2403{ 2404 struct usb_serial_port *port = tty->driver_data; 2405 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2406 unsigned int result = 0; 2407 unsigned int msr; 2408 unsigned int mcr; 2409 unsigned long flags; 2410 2411 spin_lock_irqsave(&edge_port->ep_lock, flags); 2412 2413 msr = edge_port->shadow_msr; 2414 mcr = edge_port->shadow_mcr; 2415 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2416 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2417 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2418 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2419 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2420 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2421 2422 2423 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2424 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2425 2426 return result; 2427} 2428 2429static int edge_get_icount(struct tty_struct *tty, 2430 struct serial_icounter_struct *icount) 2431{ 2432 struct usb_serial_port *port = tty->driver_data; 2433 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2434 struct async_icount *ic = &edge_port->icount; 2435 2436 icount->cts = ic->cts; 2437 icount->dsr = ic->dsr; 2438 icount->rng = ic->rng; 2439 icount->dcd = ic->dcd; 2440 icount->tx = ic->tx; 2441 icount->rx = ic->rx; 2442 icount->frame = ic->frame; 2443 icount->parity = ic->parity; 2444 icount->overrun = ic->overrun; 2445 icount->brk = ic->brk; 2446 icount->buf_overrun = ic->buf_overrun; 2447 return 0; 2448} 2449 2450static int get_serial_info(struct edgeport_port *edge_port, 2451 struct serial_struct __user *retinfo) 2452{ 2453 struct serial_struct tmp; 2454 2455 if (!retinfo) 2456 return -EFAULT; 2457 2458 memset(&tmp, 0, sizeof(tmp)); 2459 2460 tmp.type = PORT_16550A; 2461 tmp.line = edge_port->port->serial->minor; 2462 tmp.port = edge_port->port->number; 2463 tmp.irq = 0; 2464 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2465 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2466 tmp.baud_base = 9600; 2467 tmp.close_delay = 5*HZ; 2468 tmp.closing_wait = closing_wait; 2469 2470 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2471 return -EFAULT; 2472 return 0; 2473} 2474 2475static int edge_ioctl(struct tty_struct *tty, 2476 unsigned int cmd, unsigned long arg) 2477{ 2478 struct usb_serial_port *port = tty->driver_data; 2479 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2480 struct async_icount cnow; 2481 struct async_icount cprev; 2482 2483 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2484 2485 switch (cmd) { 2486 case TIOCGSERIAL: 2487 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2488 return get_serial_info(edge_port, 2489 (struct serial_struct __user *) arg); 2490 case TIOCMIWAIT: 2491 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2492 cprev = edge_port->icount; 2493 while (1) { 2494 interruptible_sleep_on(&edge_port->delta_msr_wait); 2495 /* see if a signal did it */ 2496 if (signal_pending(current)) 2497 return -ERESTARTSYS; 2498 cnow = edge_port->icount; 2499 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2500 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2501 return -EIO; /* no change => error */ 2502 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2503 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2504 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2505 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2506 return 0; 2507 } 2508 cprev = cnow; 2509 } 2510 /* not reached */ 2511 break; 2512 } 2513 return -ENOIOCTLCMD; 2514} 2515 2516static void edge_break(struct tty_struct *tty, int break_state) 2517{ 2518 struct usb_serial_port *port = tty->driver_data; 2519 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2520 int status; 2521 int bv = 0; /* Off */ 2522 2523 /* chase the port close */ 2524 chase_port(edge_port, 0, 0); 2525 2526 if (break_state == -1) 2527 bv = 1; /* On */ 2528 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2529 if (status) 2530 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2531 __func__, status); 2532} 2533 2534static int edge_startup(struct usb_serial *serial) 2535{ 2536 struct edgeport_serial *edge_serial; 2537 struct edgeport_port *edge_port; 2538 struct usb_device *dev; 2539 int status; 2540 int i; 2541 2542 dev = serial->dev; 2543 2544 /* create our private serial structure */ 2545 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2546 if (edge_serial == NULL) { 2547 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2548 return -ENOMEM; 2549 } 2550 mutex_init(&edge_serial->es_lock); 2551 edge_serial->serial = serial; 2552 usb_set_serial_data(serial, edge_serial); 2553 2554 status = download_fw(edge_serial); 2555 if (status) { 2556 kfree(edge_serial); 2557 return status; 2558 } 2559 2560 /* set up our port private structures */ 2561 for (i = 0; i < serial->num_ports; ++i) { 2562 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); 2563 if (edge_port == NULL) { 2564 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2565 __func__); 2566 goto cleanup; 2567 } 2568 spin_lock_init(&edge_port->ep_lock); 2569 if (kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2570 GFP_KERNEL)) { 2571 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2572 __func__); 2573 kfree(edge_port); 2574 goto cleanup; 2575 } 2576 edge_port->port = serial->port[i]; 2577 edge_port->edge_serial = edge_serial; 2578 usb_set_serial_port_data(serial->port[i], edge_port); 2579 edge_port->bUartMode = default_uart_mode; 2580 } 2581 2582 return 0; 2583 2584cleanup: 2585 for (--i; i >= 0; --i) { 2586 edge_port = usb_get_serial_port_data(serial->port[i]); 2587 kfifo_free(&edge_port->write_fifo); 2588 kfree(edge_port); 2589 usb_set_serial_port_data(serial->port[i], NULL); 2590 } 2591 kfree(edge_serial); 2592 usb_set_serial_data(serial, NULL); 2593 return -ENOMEM; 2594} 2595 2596static void edge_disconnect(struct usb_serial *serial) 2597{ 2598} 2599 2600static void edge_release(struct usb_serial *serial) 2601{ 2602 int i; 2603 struct edgeport_port *edge_port; 2604 2605 for (i = 0; i < serial->num_ports; ++i) { 2606 edge_port = usb_get_serial_port_data(serial->port[i]); 2607 kfifo_free(&edge_port->write_fifo); 2608 kfree(edge_port); 2609 } 2610 kfree(usb_get_serial_data(serial)); 2611} 2612 2613 2614/* Sysfs Attributes */ 2615 2616static ssize_t show_uart_mode(struct device *dev, 2617 struct device_attribute *attr, char *buf) 2618{ 2619 struct usb_serial_port *port = to_usb_serial_port(dev); 2620 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2621 2622 return sprintf(buf, "%d\n", edge_port->bUartMode); 2623} 2624 2625static ssize_t store_uart_mode(struct device *dev, 2626 struct device_attribute *attr, const char *valbuf, size_t count) 2627{ 2628 struct usb_serial_port *port = to_usb_serial_port(dev); 2629 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2630 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2631 2632 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2633 2634 if (v < 256) 2635 edge_port->bUartMode = v; 2636 else 2637 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2638 2639 return count; 2640} 2641 2642static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2643 store_uart_mode); 2644 2645static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2646{ 2647 return device_create_file(&port->dev, &dev_attr_uart_mode); 2648} 2649 2650static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2651{ 2652 device_remove_file(&port->dev, &dev_attr_uart_mode); 2653 return 0; 2654} 2655 2656 2657static struct usb_serial_driver edgeport_1port_device = { 2658 .driver = { 2659 .owner = THIS_MODULE, 2660 .name = "edgeport_ti_1", 2661 }, 2662 .description = "Edgeport TI 1 port adapter", 2663 .id_table = edgeport_1port_id_table, 2664 .num_ports = 1, 2665 .open = edge_open, 2666 .close = edge_close, 2667 .throttle = edge_throttle, 2668 .unthrottle = edge_unthrottle, 2669 .attach = edge_startup, 2670 .disconnect = edge_disconnect, 2671 .release = edge_release, 2672 .port_probe = edge_create_sysfs_attrs, 2673 .port_remove = edge_remove_sysfs_attrs, 2674 .ioctl = edge_ioctl, 2675 .set_termios = edge_set_termios, 2676 .tiocmget = edge_tiocmget, 2677 .tiocmset = edge_tiocmset, 2678 .get_icount = edge_get_icount, 2679 .write = edge_write, 2680 .write_room = edge_write_room, 2681 .chars_in_buffer = edge_chars_in_buffer, 2682 .break_ctl = edge_break, 2683 .read_int_callback = edge_interrupt_callback, 2684 .read_bulk_callback = edge_bulk_in_callback, 2685 .write_bulk_callback = edge_bulk_out_callback, 2686}; 2687 2688static struct usb_serial_driver edgeport_2port_device = { 2689 .driver = { 2690 .owner = THIS_MODULE, 2691 .name = "edgeport_ti_2", 2692 }, 2693 .description = "Edgeport TI 2 port adapter", 2694 .id_table = edgeport_2port_id_table, 2695 .num_ports = 2, 2696 .open = edge_open, 2697 .close = edge_close, 2698 .throttle = edge_throttle, 2699 .unthrottle = edge_unthrottle, 2700 .attach = edge_startup, 2701 .disconnect = edge_disconnect, 2702 .release = edge_release, 2703 .port_probe = edge_create_sysfs_attrs, 2704 .port_remove = edge_remove_sysfs_attrs, 2705 .ioctl = edge_ioctl, 2706 .set_termios = edge_set_termios, 2707 .tiocmget = edge_tiocmget, 2708 .tiocmset = edge_tiocmset, 2709 .write = edge_write, 2710 .write_room = edge_write_room, 2711 .chars_in_buffer = edge_chars_in_buffer, 2712 .break_ctl = edge_break, 2713 .read_int_callback = edge_interrupt_callback, 2714 .read_bulk_callback = edge_bulk_in_callback, 2715 .write_bulk_callback = edge_bulk_out_callback, 2716}; 2717 2718static struct usb_serial_driver * const serial_drivers[] = { 2719 &edgeport_1port_device, &edgeport_2port_device, NULL 2720}; 2721 2722module_usb_serial_driver(serial_drivers, id_table_combined); 2723 2724MODULE_AUTHOR(DRIVER_AUTHOR); 2725MODULE_DESCRIPTION(DRIVER_DESC); 2726MODULE_LICENSE("GPL"); 2727MODULE_FIRMWARE("edgeport/down3.bin"); 2728 2729module_param(debug, bool, S_IRUGO | S_IWUSR); 2730MODULE_PARM_DESC(debug, "Debug enabled or not"); 2731 2732module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2733MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2734 2735module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2736MODULE_PARM_DESC(ignore_cpu_rev, 2737 "Ignore the cpu revision when connecting to a device"); 2738 2739module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2740MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2741