io_ti.c revision fcdb6a21903bcab0b5f788ba7eb0c31dd06040fd
1/* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 14 * 15 * For questions or problems with this driver, contact Inside Out 16 * Networks technical support, or Peter Berger <pberger@brimson.com>, 17 * or Al Borchers <alborchers@steinerpoint.com>. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/jiffies.h> 22#include <linux/errno.h> 23#include <linux/init.h> 24#include <linux/slab.h> 25#include <linux/tty.h> 26#include <linux/tty_driver.h> 27#include <linux/tty_flip.h> 28#include <linux/module.h> 29#include <linux/spinlock.h> 30#include <linux/mutex.h> 31#include <linux/serial.h> 32#include <linux/kfifo.h> 33#include <linux/ioctl.h> 34#include <linux/firmware.h> 35#include <linux/uaccess.h> 36#include <linux/usb.h> 37#include <linux/usb/serial.h> 38 39#include "io_16654.h" 40#include "io_usbvend.h" 41#include "io_ti.h" 42 43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 44#define DRIVER_DESC "Edgeport USB Serial Driver" 45 46#define EPROM_PAGE_SIZE 64 47 48 49/* different hardware types */ 50#define HARDWARE_TYPE_930 0 51#define HARDWARE_TYPE_TIUMP 1 52 53/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 54#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 55#define TI_MODE_BOOT 1 /* Staying in boot mode */ 56#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 57#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 58 transitioning to download mode */ 59 60/* read urb state */ 61#define EDGE_READ_URB_RUNNING 0 62#define EDGE_READ_URB_STOPPING 1 63#define EDGE_READ_URB_STOPPED 2 64 65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 66 67#define EDGE_OUT_BUF_SIZE 1024 68 69 70/* Product information read from the Edgeport */ 71struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74} __attribute__((packed)); 75 76struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 struct async_icount icount; 90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 91 waiting for msr change to 92 happen */ 93 struct edgeport_serial *edge_serial; 94 struct usb_serial_port *port; 95 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 96 spinlock_t ep_lock; 97 int ep_read_urb_state; 98 int ep_write_urb_in_use; 99 struct kfifo write_fifo; 100}; 101 102struct edgeport_serial { 103 struct product_info product_info; 104 u8 TI_I2C_Type; /* Type of I2C in UMP */ 105 u8 TiReadI2C; /* Set to TRUE if we have read the 106 I2c in Boot Mode */ 107 struct mutex es_lock; 108 int num_ports_open; 109 struct usb_serial *serial; 110}; 111 112 113/* Devices that this driver supports */ 114static const struct usb_device_id edgeport_1port_id_table[] = { 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 131 { } 132}; 133 134static const struct usb_device_id edgeport_2port_id_table[] = { 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 153 { } 154}; 155 156/* Devices that this driver supports */ 157static const struct usb_device_id id_table_combined[] = { 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 191 { } 192}; 193 194MODULE_DEVICE_TABLE(usb, id_table_combined); 195 196static unsigned char OperationalMajorVersion; 197static unsigned char OperationalMinorVersion; 198static unsigned short OperationalBuildNumber; 199 200static int closing_wait = EDGE_CLOSING_WAIT; 201static bool ignore_cpu_rev; 202static int default_uart_mode; /* RS232 */ 203 204static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 205 unsigned char *data, int length); 206 207static void stop_read(struct edgeport_port *edge_port); 208static int restart_read(struct edgeport_port *edge_port); 209 210static void edge_set_termios(struct tty_struct *tty, 211 struct usb_serial_port *port, struct ktermios *old_termios); 212static void edge_send(struct tty_struct *tty); 213 214/* sysfs attributes */ 215static int edge_create_sysfs_attrs(struct usb_serial_port *port); 216static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 217 218 219static int ti_vread_sync(struct usb_device *dev, __u8 request, 220 __u16 value, __u16 index, u8 *data, int size) 221{ 222 int status; 223 224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 226 value, index, data, size, 1000); 227 if (status < 0) 228 return status; 229 if (status != size) { 230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 231 __func__, size, status); 232 return -ECOMM; 233 } 234 return 0; 235} 236 237static int ti_vsend_sync(struct usb_device *dev, __u8 request, 238 __u16 value, __u16 index, u8 *data, int size) 239{ 240 int status; 241 242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 244 value, index, data, size, 1000); 245 if (status < 0) 246 return status; 247 if (status != size) { 248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 249 __func__, size, status); 250 return -ECOMM; 251 } 252 return 0; 253} 254 255static int send_cmd(struct usb_device *dev, __u8 command, 256 __u8 moduleid, __u16 value, u8 *data, 257 int size) 258{ 259 return ti_vsend_sync(dev, command, value, moduleid, data, size); 260} 261 262/* clear tx/rx buffers and fifo in TI UMP */ 263static int purge_port(struct usb_serial_port *port, __u16 mask) 264{ 265 int port_number = port->number - port->serial->minor; 266 267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 268 269 return send_cmd(port->serial->dev, 270 UMPC_PURGE_PORT, 271 (__u8)(UMPM_UART1_PORT + port_number), 272 mask, 273 NULL, 274 0); 275} 276 277/** 278 * read_download_mem - Read edgeport memory from TI chip 279 * @dev: usb device pointer 280 * @start_address: Device CPU address at which to read 281 * @length: Length of above data 282 * @address_type: Can read both XDATA and I2C 283 * @buffer: pointer to input data buffer 284 */ 285static int read_download_mem(struct usb_device *dev, int start_address, 286 int length, __u8 address_type, __u8 *buffer) 287{ 288 int status = 0; 289 __u8 read_length; 290 __be16 be_start_address; 291 292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 293 294 /* Read in blocks of 64 bytes 295 * (TI firmware can't handle more than 64 byte reads) 296 */ 297 while (length) { 298 if (length > 64) 299 read_length = 64; 300 else 301 read_length = (__u8)length; 302 303 if (read_length > 1) { 304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 305 } 306 be_start_address = cpu_to_be16(start_address); 307 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 308 (__u16)address_type, 309 (__force __u16)be_start_address, 310 buffer, read_length); 311 312 if (status) { 313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 314 return status; 315 } 316 317 if (read_length > 1) 318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 319 320 /* Update pointers/length */ 321 start_address += read_length; 322 buffer += read_length; 323 length -= read_length; 324 } 325 326 return status; 327} 328 329static int read_ram(struct usb_device *dev, int start_address, 330 int length, __u8 *buffer) 331{ 332 return read_download_mem(dev, start_address, length, 333 DTK_ADDR_SPACE_XDATA, buffer); 334} 335 336/* Read edgeport memory to a given block */ 337static int read_boot_mem(struct edgeport_serial *serial, 338 int start_address, int length, __u8 *buffer) 339{ 340 int status = 0; 341 int i; 342 343 for (i = 0; i < length; i++) { 344 status = ti_vread_sync(serial->serial->dev, 345 UMPC_MEMORY_READ, serial->TI_I2C_Type, 346 (__u16)(start_address+i), &buffer[i], 0x01); 347 if (status) { 348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 349 return status; 350 } 351 } 352 353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 354 __func__, start_address, length); 355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 356 357 serial->TiReadI2C = 1; 358 359 return status; 360} 361 362/* Write given block to TI EPROM memory */ 363static int write_boot_mem(struct edgeport_serial *serial, 364 int start_address, int length, __u8 *buffer) 365{ 366 int status = 0; 367 int i; 368 u8 *temp; 369 370 /* Must do a read before write */ 371 if (!serial->TiReadI2C) { 372 temp = kmalloc(1, GFP_KERNEL); 373 if (!temp) { 374 dev_err(&serial->serial->dev->dev, 375 "%s - out of memory\n", __func__); 376 return -ENOMEM; 377 } 378 status = read_boot_mem(serial, 0, 1, temp); 379 kfree(temp); 380 if (status) 381 return status; 382 } 383 384 for (i = 0; i < length; ++i) { 385 status = ti_vsend_sync(serial->serial->dev, 386 UMPC_MEMORY_WRITE, buffer[i], 387 (__u16)(i + start_address), NULL, 0); 388 if (status) 389 return status; 390 } 391 392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 394 395 return status; 396} 397 398 399/* Write edgeport I2C memory to TI chip */ 400static int write_i2c_mem(struct edgeport_serial *serial, 401 int start_address, int length, __u8 address_type, __u8 *buffer) 402{ 403 struct device *dev = &serial->serial->dev->dev; 404 int status = 0; 405 int write_length; 406 __be16 be_start_address; 407 408 /* We can only send a maximum of 1 aligned byte page at a time */ 409 410 /* calculate the number of bytes left in the first page */ 411 write_length = EPROM_PAGE_SIZE - 412 (start_address & (EPROM_PAGE_SIZE - 1)); 413 414 if (write_length > length) 415 write_length = length; 416 417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 418 __func__, start_address, write_length); 419 usb_serial_debug_data(dev, __func__, write_length, buffer); 420 421 /* Write first page */ 422 be_start_address = cpu_to_be16(start_address); 423 status = ti_vsend_sync(serial->serial->dev, 424 UMPC_MEMORY_WRITE, (__u16)address_type, 425 (__force __u16)be_start_address, 426 buffer, write_length); 427 if (status) { 428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 429 return status; 430 } 431 432 length -= write_length; 433 start_address += write_length; 434 buffer += write_length; 435 436 /* We should be aligned now -- can write 437 max page size bytes at a time */ 438 while (length) { 439 if (length > EPROM_PAGE_SIZE) 440 write_length = EPROM_PAGE_SIZE; 441 else 442 write_length = length; 443 444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 445 __func__, start_address, write_length); 446 usb_serial_debug_data(dev, __func__, write_length, buffer); 447 448 /* Write next page */ 449 be_start_address = cpu_to_be16(start_address); 450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 451 (__u16)address_type, 452 (__force __u16)be_start_address, 453 buffer, write_length); 454 if (status) { 455 dev_err(dev, "%s - ERROR %d\n", __func__, status); 456 return status; 457 } 458 459 length -= write_length; 460 start_address += write_length; 461 buffer += write_length; 462 } 463 return status; 464} 465 466/* Examine the UMP DMA registers and LSR 467 * 468 * Check the MSBit of the X and Y DMA byte count registers. 469 * A zero in this bit indicates that the TX DMA buffers are empty 470 * then check the TX Empty bit in the UART. 471 */ 472static int tx_active(struct edgeport_port *port) 473{ 474 int status; 475 struct out_endpoint_desc_block *oedb; 476 __u8 *lsr; 477 int bytes_left = 0; 478 479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 480 if (!oedb) { 481 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 482 return -ENOMEM; 483 } 484 485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 486 as not all platforms can do DMA 487 from stack */ 488 if (!lsr) { 489 kfree(oedb); 490 return -ENOMEM; 491 } 492 /* Read the DMA Count Registers */ 493 status = read_ram(port->port->serial->dev, port->dma_address, 494 sizeof(*oedb), (void *)oedb); 495 if (status) 496 goto exit_is_tx_active; 497 498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 499 500 /* and the LSR */ 501 status = read_ram(port->port->serial->dev, 502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 503 504 if (status) 505 goto exit_is_tx_active; 506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 507 508 /* If either buffer has data or we are transmitting then return TRUE */ 509 if ((oedb->XByteCount & 0x80) != 0) 510 bytes_left += 64; 511 512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 513 bytes_left += 1; 514 515 /* We return Not Active if we get any kind of error */ 516exit_is_tx_active: 517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 518 519 kfree(lsr); 520 kfree(oedb); 521 return bytes_left; 522} 523 524static void chase_port(struct edgeport_port *port, unsigned long timeout) 525{ 526 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 527 struct usb_serial *serial = port->port->serial; 528 wait_queue_t wait; 529 unsigned long flags; 530 531 if (!timeout) 532 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 533 534 /* wait for data to drain from the buffer */ 535 spin_lock_irqsave(&port->ep_lock, flags); 536 init_waitqueue_entry(&wait, current); 537 add_wait_queue(&tty->write_wait, &wait); 538 for (;;) { 539 set_current_state(TASK_INTERRUPTIBLE); 540 if (kfifo_len(&port->write_fifo) == 0 541 || timeout == 0 || signal_pending(current) 542 || serial->disconnected) 543 /* disconnect */ 544 break; 545 spin_unlock_irqrestore(&port->ep_lock, flags); 546 timeout = schedule_timeout(timeout); 547 spin_lock_irqsave(&port->ep_lock, flags); 548 } 549 set_current_state(TASK_RUNNING); 550 remove_wait_queue(&tty->write_wait, &wait); 551 spin_unlock_irqrestore(&port->ep_lock, flags); 552 tty_kref_put(tty); 553 554 /* wait for data to drain from the device */ 555 timeout += jiffies; 556 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 557 && !serial->disconnected) { 558 /* not disconnected */ 559 if (!tx_active(port)) 560 break; 561 msleep(10); 562 } 563} 564 565static int choose_config(struct usb_device *dev) 566{ 567 /* 568 * There may be multiple configurations on this device, in which case 569 * we would need to read and parse all of them to find out which one 570 * we want. However, we just support one config at this point, 571 * configuration # 1, which is Config Descriptor 0. 572 */ 573 574 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 575 __func__, dev->config->desc.bNumInterfaces); 576 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 577 __func__, dev->config->desc.bMaxPower * 2); 578 579 if (dev->config->desc.bNumInterfaces != 1) { 580 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 581 return -ENODEV; 582 } 583 584 return 0; 585} 586 587static int read_rom(struct edgeport_serial *serial, 588 int start_address, int length, __u8 *buffer) 589{ 590 int status; 591 592 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 593 status = read_download_mem(serial->serial->dev, 594 start_address, 595 length, 596 serial->TI_I2C_Type, 597 buffer); 598 } else { 599 status = read_boot_mem(serial, start_address, length, 600 buffer); 601 } 602 return status; 603} 604 605static int write_rom(struct edgeport_serial *serial, int start_address, 606 int length, __u8 *buffer) 607{ 608 if (serial->product_info.TiMode == TI_MODE_BOOT) 609 return write_boot_mem(serial, start_address, length, 610 buffer); 611 612 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 613 return write_i2c_mem(serial, start_address, length, 614 serial->TI_I2C_Type, buffer); 615 return -EINVAL; 616} 617 618 619 620/* Read a descriptor header from I2C based on type */ 621static int get_descriptor_addr(struct edgeport_serial *serial, 622 int desc_type, struct ti_i2c_desc *rom_desc) 623{ 624 int start_address; 625 int status; 626 627 /* Search for requested descriptor in I2C */ 628 start_address = 2; 629 do { 630 status = read_rom(serial, 631 start_address, 632 sizeof(struct ti_i2c_desc), 633 (__u8 *)rom_desc); 634 if (status) 635 return 0; 636 637 if (rom_desc->Type == desc_type) 638 return start_address; 639 640 start_address = start_address + sizeof(struct ti_i2c_desc) 641 + rom_desc->Size; 642 643 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 644 645 return 0; 646} 647 648/* Validate descriptor checksum */ 649static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 650{ 651 __u16 i; 652 __u8 cs = 0; 653 654 for (i = 0; i < rom_desc->Size; i++) 655 cs = (__u8)(cs + buffer[i]); 656 657 if (cs != rom_desc->CheckSum) { 658 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 659 return -EINVAL; 660 } 661 return 0; 662} 663 664/* Make sure that the I2C image is good */ 665static int check_i2c_image(struct edgeport_serial *serial) 666{ 667 struct device *dev = &serial->serial->dev->dev; 668 int status = 0; 669 struct ti_i2c_desc *rom_desc; 670 int start_address = 2; 671 __u8 *buffer; 672 __u16 ttype; 673 674 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 675 if (!rom_desc) { 676 dev_err(dev, "%s - out of memory\n", __func__); 677 return -ENOMEM; 678 } 679 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 680 if (!buffer) { 681 dev_err(dev, "%s - out of memory when allocating buffer\n", 682 __func__); 683 kfree(rom_desc); 684 return -ENOMEM; 685 } 686 687 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 688 status = read_rom(serial, 0, 1, buffer); 689 if (status) 690 goto out; 691 692 if (*buffer != UMP5152 && *buffer != UMP3410) { 693 dev_err(dev, "%s - invalid buffer signature\n", __func__); 694 status = -ENODEV; 695 goto out; 696 } 697 698 do { 699 /* Validate the I2C */ 700 status = read_rom(serial, 701 start_address, 702 sizeof(struct ti_i2c_desc), 703 (__u8 *)rom_desc); 704 if (status) 705 break; 706 707 if ((start_address + sizeof(struct ti_i2c_desc) + 708 rom_desc->Size) > TI_MAX_I2C_SIZE) { 709 status = -ENODEV; 710 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 711 break; 712 } 713 714 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 715 716 /* Skip type 2 record */ 717 ttype = rom_desc->Type & 0x0f; 718 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 719 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 720 /* Read the descriptor data */ 721 status = read_rom(serial, start_address + 722 sizeof(struct ti_i2c_desc), 723 rom_desc->Size, buffer); 724 if (status) 725 break; 726 727 status = valid_csum(rom_desc, buffer); 728 if (status) 729 break; 730 } 731 start_address = start_address + sizeof(struct ti_i2c_desc) + 732 rom_desc->Size; 733 734 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 735 (start_address < TI_MAX_I2C_SIZE)); 736 737 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 738 (start_address > TI_MAX_I2C_SIZE)) 739 status = -ENODEV; 740 741out: 742 kfree(buffer); 743 kfree(rom_desc); 744 return status; 745} 746 747static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 748{ 749 int status; 750 int start_address; 751 struct ti_i2c_desc *rom_desc; 752 struct edge_ti_manuf_descriptor *desc; 753 struct device *dev = &serial->serial->dev->dev; 754 755 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 756 if (!rom_desc) { 757 dev_err(dev, "%s - out of memory\n", __func__); 758 return -ENOMEM; 759 } 760 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 761 rom_desc); 762 763 if (!start_address) { 764 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 765 status = -ENODEV; 766 goto exit; 767 } 768 769 /* Read the descriptor data */ 770 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 771 rom_desc->Size, buffer); 772 if (status) 773 goto exit; 774 775 status = valid_csum(rom_desc, buffer); 776 777 desc = (struct edge_ti_manuf_descriptor *)buffer; 778 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 779 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 780 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 781 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 782 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 783 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 784 785exit: 786 kfree(rom_desc); 787 return status; 788} 789 790/* Build firmware header used for firmware update */ 791static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 792{ 793 __u8 *buffer; 794 int buffer_size; 795 int i; 796 int err; 797 __u8 cs = 0; 798 struct ti_i2c_desc *i2c_header; 799 struct ti_i2c_image_header *img_header; 800 struct ti_i2c_firmware_rec *firmware_rec; 801 const struct firmware *fw; 802 const char *fw_name = "edgeport/down3.bin"; 803 804 /* In order to update the I2C firmware we must change the type 2 record 805 * to type 0xF2. This will force the UMP to come up in Boot Mode. 806 * Then while in boot mode, the driver will download the latest 807 * firmware (padded to 15.5k) into the UMP ram. And finally when the 808 * device comes back up in download mode the driver will cause the new 809 * firmware to be copied from the UMP Ram to I2C and the firmware will 810 * update the record type from 0xf2 to 0x02. 811 */ 812 813 /* Allocate a 15.5k buffer + 2 bytes for version number 814 * (Firmware Record) */ 815 buffer_size = (((1024 * 16) - 512 ) + 816 sizeof(struct ti_i2c_firmware_rec)); 817 818 buffer = kmalloc(buffer_size, GFP_KERNEL); 819 if (!buffer) { 820 dev_err(dev, "%s - out of memory\n", __func__); 821 return -ENOMEM; 822 } 823 824 // Set entire image of 0xffs 825 memset(buffer, 0xff, buffer_size); 826 827 err = request_firmware(&fw, fw_name, dev); 828 if (err) { 829 dev_err(dev, "Failed to load image \"%s\" err %d\n", 830 fw_name, err); 831 kfree(buffer); 832 return err; 833 } 834 835 /* Save Download Version Number */ 836 OperationalMajorVersion = fw->data[0]; 837 OperationalMinorVersion = fw->data[1]; 838 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 839 840 /* Copy version number into firmware record */ 841 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 842 843 firmware_rec->Ver_Major = OperationalMajorVersion; 844 firmware_rec->Ver_Minor = OperationalMinorVersion; 845 846 /* Pointer to fw_down memory image */ 847 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 848 849 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 850 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 851 le16_to_cpu(img_header->Length)); 852 853 release_firmware(fw); 854 855 for (i=0; i < buffer_size; i++) { 856 cs = (__u8)(cs + buffer[i]); 857 } 858 859 kfree(buffer); 860 861 /* Build new header */ 862 i2c_header = (struct ti_i2c_desc *)header; 863 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 864 865 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 866 i2c_header->Size = (__u16)buffer_size; 867 i2c_header->CheckSum = cs; 868 firmware_rec->Ver_Major = OperationalMajorVersion; 869 firmware_rec->Ver_Minor = OperationalMinorVersion; 870 871 return 0; 872} 873 874/* Try to figure out what type of I2c we have */ 875static int i2c_type_bootmode(struct edgeport_serial *serial) 876{ 877 struct device *dev = &serial->serial->dev->dev; 878 int status; 879 u8 *data; 880 881 data = kmalloc(1, GFP_KERNEL); 882 if (!data) { 883 dev_err(dev, "%s - out of memory\n", __func__); 884 return -ENOMEM; 885 } 886 887 /* Try to read type 2 */ 888 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 889 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 890 if (status) 891 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 892 else 893 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 894 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 895 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 896 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 897 goto out; 898 } 899 900 /* Try to read type 3 */ 901 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 902 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 903 if (status) 904 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 905 else 906 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 907 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 908 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 909 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 910 goto out; 911 } 912 913 dev_dbg(dev, "%s - Unknown\n", __func__); 914 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 915 status = -ENODEV; 916out: 917 kfree(data); 918 return status; 919} 920 921static int bulk_xfer(struct usb_serial *serial, void *buffer, 922 int length, int *num_sent) 923{ 924 int status; 925 926 status = usb_bulk_msg(serial->dev, 927 usb_sndbulkpipe(serial->dev, 928 serial->port[0]->bulk_out_endpointAddress), 929 buffer, length, num_sent, 1000); 930 return status; 931} 932 933/* Download given firmware image to the device (IN BOOT MODE) */ 934static int download_code(struct edgeport_serial *serial, __u8 *image, 935 int image_length) 936{ 937 int status = 0; 938 int pos; 939 int transfer; 940 int done; 941 942 /* Transfer firmware image */ 943 for (pos = 0; pos < image_length; ) { 944 /* Read the next buffer from file */ 945 transfer = image_length - pos; 946 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 947 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 948 949 /* Transfer data */ 950 status = bulk_xfer(serial->serial, &image[pos], 951 transfer, &done); 952 if (status) 953 break; 954 /* Advance buffer pointer */ 955 pos += done; 956 } 957 958 return status; 959} 960 961/* FIXME!!! */ 962static int config_boot_dev(struct usb_device *dev) 963{ 964 return 0; 965} 966 967static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 968{ 969 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 970} 971 972/** 973 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 974 * 975 * This routine downloads the main operating code into the TI5052, using the 976 * boot code already burned into E2PROM or ROM. 977 */ 978static int download_fw(struct edgeport_serial *serial) 979{ 980 struct device *dev = &serial->serial->dev->dev; 981 int status = 0; 982 int start_address; 983 struct edge_ti_manuf_descriptor *ti_manuf_desc; 984 struct usb_interface_descriptor *interface; 985 int download_cur_ver; 986 int download_new_ver; 987 988 /* This routine is entered by both the BOOT mode and the Download mode 989 * We can determine which code is running by the reading the config 990 * descriptor and if we have only one bulk pipe it is in boot mode 991 */ 992 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 993 994 /* Default to type 2 i2c */ 995 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 996 997 status = choose_config(serial->serial->dev); 998 if (status) 999 return status; 1000 1001 interface = &serial->serial->interface->cur_altsetting->desc; 1002 if (!interface) { 1003 dev_err(dev, "%s - no interface set, error!\n", __func__); 1004 return -ENODEV; 1005 } 1006 1007 /* 1008 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1009 * if we have more than one endpoint we are definitely in download 1010 * mode 1011 */ 1012 if (interface->bNumEndpoints > 1) 1013 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1014 else 1015 /* Otherwise we will remain in configuring mode */ 1016 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1017 1018 /********************************************************************/ 1019 /* Download Mode */ 1020 /********************************************************************/ 1021 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1022 struct ti_i2c_desc *rom_desc; 1023 1024 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1025 1026 status = check_i2c_image(serial); 1027 if (status) { 1028 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1029 return status; 1030 } 1031 1032 /* Validate Hardware version number 1033 * Read Manufacturing Descriptor from TI Based Edgeport 1034 */ 1035 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1036 if (!ti_manuf_desc) { 1037 dev_err(dev, "%s - out of memory.\n", __func__); 1038 return -ENOMEM; 1039 } 1040 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1041 if (status) { 1042 kfree(ti_manuf_desc); 1043 return status; 1044 } 1045 1046 /* Check version number of ION descriptor */ 1047 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1048 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1049 __func__, ti_cpu_rev(ti_manuf_desc)); 1050 kfree(ti_manuf_desc); 1051 return -EINVAL; 1052 } 1053 1054 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1055 if (!rom_desc) { 1056 dev_err(dev, "%s - out of memory.\n", __func__); 1057 kfree(ti_manuf_desc); 1058 return -ENOMEM; 1059 } 1060 1061 /* Search for type 2 record (firmware record) */ 1062 start_address = get_descriptor_addr(serial, 1063 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1064 if (start_address != 0) { 1065 struct ti_i2c_firmware_rec *firmware_version; 1066 u8 *record; 1067 1068 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1069 1070 firmware_version = kmalloc(sizeof(*firmware_version), 1071 GFP_KERNEL); 1072 if (!firmware_version) { 1073 dev_err(dev, "%s - out of memory.\n", __func__); 1074 kfree(rom_desc); 1075 kfree(ti_manuf_desc); 1076 return -ENOMEM; 1077 } 1078 1079 /* Validate version number 1080 * Read the descriptor data 1081 */ 1082 status = read_rom(serial, start_address + 1083 sizeof(struct ti_i2c_desc), 1084 sizeof(struct ti_i2c_firmware_rec), 1085 (__u8 *)firmware_version); 1086 if (status) { 1087 kfree(firmware_version); 1088 kfree(rom_desc); 1089 kfree(ti_manuf_desc); 1090 return status; 1091 } 1092 1093 /* Check version number of download with current 1094 version in I2c */ 1095 download_cur_ver = (firmware_version->Ver_Major << 8) + 1096 (firmware_version->Ver_Minor); 1097 download_new_ver = (OperationalMajorVersion << 8) + 1098 (OperationalMinorVersion); 1099 1100 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1101 __func__, firmware_version->Ver_Major, 1102 firmware_version->Ver_Minor, 1103 OperationalMajorVersion, 1104 OperationalMinorVersion); 1105 1106 /* Check if we have an old version in the I2C and 1107 update if necessary */ 1108 if (download_cur_ver < download_new_ver) { 1109 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1110 __func__, 1111 firmware_version->Ver_Major, 1112 firmware_version->Ver_Minor, 1113 OperationalMajorVersion, 1114 OperationalMinorVersion); 1115 1116 record = kmalloc(1, GFP_KERNEL); 1117 if (!record) { 1118 dev_err(dev, "%s - out of memory.\n", 1119 __func__); 1120 kfree(firmware_version); 1121 kfree(rom_desc); 1122 kfree(ti_manuf_desc); 1123 return -ENOMEM; 1124 } 1125 /* In order to update the I2C firmware we must 1126 * change the type 2 record to type 0xF2. This 1127 * will force the UMP to come up in Boot Mode. 1128 * Then while in boot mode, the driver will 1129 * download the latest firmware (padded to 1130 * 15.5k) into the UMP ram. Finally when the 1131 * device comes back up in download mode the 1132 * driver will cause the new firmware to be 1133 * copied from the UMP Ram to I2C and the 1134 * firmware will update the record type from 1135 * 0xf2 to 0x02. 1136 */ 1137 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1138 1139 /* Change the I2C Firmware record type to 1140 0xf2 to trigger an update */ 1141 status = write_rom(serial, start_address, 1142 sizeof(*record), record); 1143 if (status) { 1144 kfree(record); 1145 kfree(firmware_version); 1146 kfree(rom_desc); 1147 kfree(ti_manuf_desc); 1148 return status; 1149 } 1150 1151 /* verify the write -- must do this in order 1152 * for write to complete before we do the 1153 * hardware reset 1154 */ 1155 status = read_rom(serial, 1156 start_address, 1157 sizeof(*record), 1158 record); 1159 if (status) { 1160 kfree(record); 1161 kfree(firmware_version); 1162 kfree(rom_desc); 1163 kfree(ti_manuf_desc); 1164 return status; 1165 } 1166 1167 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1168 dev_err(dev, "%s - error resetting device\n", __func__); 1169 kfree(record); 1170 kfree(firmware_version); 1171 kfree(rom_desc); 1172 kfree(ti_manuf_desc); 1173 return -ENODEV; 1174 } 1175 1176 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1177 1178 /* Reset UMP -- Back to BOOT MODE */ 1179 status = ti_vsend_sync(serial->serial->dev, 1180 UMPC_HARDWARE_RESET, 1181 0, 0, NULL, 0); 1182 1183 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1184 1185 /* return an error on purpose. */ 1186 kfree(record); 1187 kfree(firmware_version); 1188 kfree(rom_desc); 1189 kfree(ti_manuf_desc); 1190 return -ENODEV; 1191 } 1192 kfree(firmware_version); 1193 } 1194 /* Search for type 0xF2 record (firmware blank record) */ 1195 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1196#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1197 sizeof(struct ti_i2c_firmware_rec)) 1198 __u8 *header; 1199 __u8 *vheader; 1200 1201 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1202 if (!header) { 1203 dev_err(dev, "%s - out of memory.\n", __func__); 1204 kfree(rom_desc); 1205 kfree(ti_manuf_desc); 1206 return -ENOMEM; 1207 } 1208 1209 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1210 if (!vheader) { 1211 dev_err(dev, "%s - out of memory.\n", __func__); 1212 kfree(header); 1213 kfree(rom_desc); 1214 kfree(ti_manuf_desc); 1215 return -ENOMEM; 1216 } 1217 1218 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1219 1220 /* 1221 * In order to update the I2C firmware we must change 1222 * the type 2 record to type 0xF2. This will force the 1223 * UMP to come up in Boot Mode. Then while in boot 1224 * mode, the driver will download the latest firmware 1225 * (padded to 15.5k) into the UMP ram. Finally when the 1226 * device comes back up in download mode the driver 1227 * will cause the new firmware to be copied from the 1228 * UMP Ram to I2C and the firmware will update the 1229 * record type from 0xf2 to 0x02. 1230 */ 1231 status = build_i2c_fw_hdr(header, dev); 1232 if (status) { 1233 kfree(vheader); 1234 kfree(header); 1235 kfree(rom_desc); 1236 kfree(ti_manuf_desc); 1237 return -EINVAL; 1238 } 1239 1240 /* Update I2C with type 0xf2 record with correct 1241 size and checksum */ 1242 status = write_rom(serial, 1243 start_address, 1244 HEADER_SIZE, 1245 header); 1246 if (status) { 1247 kfree(vheader); 1248 kfree(header); 1249 kfree(rom_desc); 1250 kfree(ti_manuf_desc); 1251 return -EINVAL; 1252 } 1253 1254 /* verify the write -- must do this in order for 1255 write to complete before we do the hardware reset */ 1256 status = read_rom(serial, start_address, 1257 HEADER_SIZE, vheader); 1258 1259 if (status) { 1260 dev_dbg(dev, "%s - can't read header back\n", __func__); 1261 kfree(vheader); 1262 kfree(header); 1263 kfree(rom_desc); 1264 kfree(ti_manuf_desc); 1265 return status; 1266 } 1267 if (memcmp(vheader, header, HEADER_SIZE)) { 1268 dev_dbg(dev, "%s - write download record failed\n", __func__); 1269 kfree(vheader); 1270 kfree(header); 1271 kfree(rom_desc); 1272 kfree(ti_manuf_desc); 1273 return -EINVAL; 1274 } 1275 1276 kfree(vheader); 1277 kfree(header); 1278 1279 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1280 1281 /* Tell firmware to copy download image into I2C */ 1282 status = ti_vsend_sync(serial->serial->dev, 1283 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1284 1285 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1286 if (status) { 1287 dev_err(dev, 1288 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1289 __func__); 1290 kfree(rom_desc); 1291 kfree(ti_manuf_desc); 1292 return status; 1293 } 1294 } 1295 1296 // The device is running the download code 1297 kfree(rom_desc); 1298 kfree(ti_manuf_desc); 1299 return 0; 1300 } 1301 1302 /********************************************************************/ 1303 /* Boot Mode */ 1304 /********************************************************************/ 1305 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1306 1307 /* Configure the TI device so we can use the BULK pipes for download */ 1308 status = config_boot_dev(serial->serial->dev); 1309 if (status) 1310 return status; 1311 1312 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1313 != USB_VENDOR_ID_ION) { 1314 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1315 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1316 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1317 goto stayinbootmode; 1318 } 1319 1320 /* We have an ION device (I2c Must be programmed) 1321 Determine I2C image type */ 1322 if (i2c_type_bootmode(serial)) 1323 goto stayinbootmode; 1324 1325 /* Check for ION Vendor ID and that the I2C is valid */ 1326 if (!check_i2c_image(serial)) { 1327 struct ti_i2c_image_header *header; 1328 int i; 1329 __u8 cs = 0; 1330 __u8 *buffer; 1331 int buffer_size; 1332 int err; 1333 const struct firmware *fw; 1334 const char *fw_name = "edgeport/down3.bin"; 1335 1336 /* Validate Hardware version number 1337 * Read Manufacturing Descriptor from TI Based Edgeport 1338 */ 1339 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1340 if (!ti_manuf_desc) { 1341 dev_err(dev, "%s - out of memory.\n", __func__); 1342 return -ENOMEM; 1343 } 1344 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1345 if (status) { 1346 kfree(ti_manuf_desc); 1347 goto stayinbootmode; 1348 } 1349 1350 /* Check for version 2 */ 1351 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1352 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1353 __func__, ti_cpu_rev(ti_manuf_desc)); 1354 kfree(ti_manuf_desc); 1355 goto stayinbootmode; 1356 } 1357 1358 kfree(ti_manuf_desc); 1359 1360 /* 1361 * In order to update the I2C firmware we must change the type 1362 * 2 record to type 0xF2. This will force the UMP to come up 1363 * in Boot Mode. Then while in boot mode, the driver will 1364 * download the latest firmware (padded to 15.5k) into the 1365 * UMP ram. Finally when the device comes back up in download 1366 * mode the driver will cause the new firmware to be copied 1367 * from the UMP Ram to I2C and the firmware will update the 1368 * record type from 0xf2 to 0x02. 1369 * 1370 * Do we really have to copy the whole firmware image, 1371 * or could we do this in place! 1372 */ 1373 1374 /* Allocate a 15.5k buffer + 3 byte header */ 1375 buffer_size = (((1024 * 16) - 512) + 1376 sizeof(struct ti_i2c_image_header)); 1377 buffer = kmalloc(buffer_size, GFP_KERNEL); 1378 if (!buffer) { 1379 dev_err(dev, "%s - out of memory\n", __func__); 1380 return -ENOMEM; 1381 } 1382 1383 /* Initialize the buffer to 0xff (pad the buffer) */ 1384 memset(buffer, 0xff, buffer_size); 1385 1386 err = request_firmware(&fw, fw_name, dev); 1387 if (err) { 1388 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1389 fw_name, err); 1390 kfree(buffer); 1391 return err; 1392 } 1393 memcpy(buffer, &fw->data[4], fw->size - 4); 1394 release_firmware(fw); 1395 1396 for (i = sizeof(struct ti_i2c_image_header); 1397 i < buffer_size; i++) { 1398 cs = (__u8)(cs + buffer[i]); 1399 } 1400 1401 header = (struct ti_i2c_image_header *)buffer; 1402 1403 /* update length and checksum after padding */ 1404 header->Length = cpu_to_le16((__u16)(buffer_size - 1405 sizeof(struct ti_i2c_image_header))); 1406 header->CheckSum = cs; 1407 1408 /* Download the operational code */ 1409 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1410 status = download_code(serial, buffer, buffer_size); 1411 1412 kfree(buffer); 1413 1414 if (status) { 1415 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1416 return status; 1417 } 1418 1419 /* Device will reboot */ 1420 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1421 1422 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1423 1424 /* return an error on purpose */ 1425 return -ENODEV; 1426 } 1427 1428stayinbootmode: 1429 /* Eprom is invalid or blank stay in boot mode */ 1430 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1431 serial->product_info.TiMode = TI_MODE_BOOT; 1432 1433 return 0; 1434} 1435 1436 1437static int ti_do_config(struct edgeport_port *port, int feature, int on) 1438{ 1439 int port_number = port->port->number - port->port->serial->minor; 1440 on = !!on; /* 1 or 0 not bitmask */ 1441 return send_cmd(port->port->serial->dev, 1442 feature, (__u8)(UMPM_UART1_PORT + port_number), 1443 on, NULL, 0); 1444} 1445 1446 1447static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1448{ 1449 int status = 0; 1450 1451 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1452 1453 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1454 if (status) 1455 return status; 1456 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1457 if (status) 1458 return status; 1459 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1460} 1461 1462/* Convert TI LSR to standard UART flags */ 1463static __u8 map_line_status(__u8 ti_lsr) 1464{ 1465 __u8 lsr = 0; 1466 1467#define MAP_FLAG(flagUmp, flagUart) \ 1468 if (ti_lsr & flagUmp) \ 1469 lsr |= flagUart; 1470 1471 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1472 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1473 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1474 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1475 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1476 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1477 1478#undef MAP_FLAG 1479 1480 return lsr; 1481} 1482 1483static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1484{ 1485 struct async_icount *icount; 1486 struct tty_struct *tty; 1487 1488 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1489 1490 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1491 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1492 icount = &edge_port->icount; 1493 1494 /* update input line counters */ 1495 if (msr & EDGEPORT_MSR_DELTA_CTS) 1496 icount->cts++; 1497 if (msr & EDGEPORT_MSR_DELTA_DSR) 1498 icount->dsr++; 1499 if (msr & EDGEPORT_MSR_DELTA_CD) 1500 icount->dcd++; 1501 if (msr & EDGEPORT_MSR_DELTA_RI) 1502 icount->rng++; 1503 wake_up_interruptible(&edge_port->delta_msr_wait); 1504 } 1505 1506 /* Save the new modem status */ 1507 edge_port->shadow_msr = msr & 0xf0; 1508 1509 tty = tty_port_tty_get(&edge_port->port->port); 1510 /* handle CTS flow control */ 1511 if (tty && C_CRTSCTS(tty)) { 1512 if (msr & EDGEPORT_MSR_CTS) { 1513 tty->hw_stopped = 0; 1514 tty_wakeup(tty); 1515 } else { 1516 tty->hw_stopped = 1; 1517 } 1518 } 1519 tty_kref_put(tty); 1520} 1521 1522static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1523 __u8 lsr, __u8 data) 1524{ 1525 struct async_icount *icount; 1526 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1527 LSR_FRM_ERR | LSR_BREAK)); 1528 struct tty_struct *tty; 1529 1530 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1531 1532 edge_port->shadow_lsr = lsr; 1533 1534 if (new_lsr & LSR_BREAK) 1535 /* 1536 * Parity and Framing errors only count if they 1537 * occur exclusive of a break being received. 1538 */ 1539 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1540 1541 /* Place LSR data byte into Rx buffer */ 1542 if (lsr_data) { 1543 tty = tty_port_tty_get(&edge_port->port->port); 1544 if (tty) { 1545 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1546 tty_kref_put(tty); 1547 } 1548 } 1549 1550 /* update input line counters */ 1551 icount = &edge_port->icount; 1552 if (new_lsr & LSR_BREAK) 1553 icount->brk++; 1554 if (new_lsr & LSR_OVER_ERR) 1555 icount->overrun++; 1556 if (new_lsr & LSR_PAR_ERR) 1557 icount->parity++; 1558 if (new_lsr & LSR_FRM_ERR) 1559 icount->frame++; 1560} 1561 1562 1563static void edge_interrupt_callback(struct urb *urb) 1564{ 1565 struct edgeport_serial *edge_serial = urb->context; 1566 struct usb_serial_port *port; 1567 struct edgeport_port *edge_port; 1568 struct device *dev; 1569 unsigned char *data = urb->transfer_buffer; 1570 int length = urb->actual_length; 1571 int port_number; 1572 int function; 1573 int retval; 1574 __u8 lsr; 1575 __u8 msr; 1576 int status = urb->status; 1577 1578 switch (status) { 1579 case 0: 1580 /* success */ 1581 break; 1582 case -ECONNRESET: 1583 case -ENOENT: 1584 case -ESHUTDOWN: 1585 /* this urb is terminated, clean up */ 1586 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1587 __func__, status); 1588 return; 1589 default: 1590 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1591 "%d\n", __func__, status); 1592 goto exit; 1593 } 1594 1595 if (!length) { 1596 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1597 goto exit; 1598 } 1599 1600 dev = &edge_serial->serial->dev->dev; 1601 usb_serial_debug_data(dev, __func__, length, data); 1602 1603 if (length != 2) { 1604 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1605 goto exit; 1606 } 1607 1608 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1609 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1610 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1611 port_number, function, data[1]); 1612 port = edge_serial->serial->port[port_number]; 1613 edge_port = usb_get_serial_port_data(port); 1614 if (!edge_port) { 1615 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1616 return; 1617 } 1618 switch (function) { 1619 case TIUMP_INTERRUPT_CODE_LSR: 1620 lsr = map_line_status(data[1]); 1621 if (lsr & UMP_UART_LSR_DATA_MASK) { 1622 /* Save the LSR event for bulk read 1623 completion routine */ 1624 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1625 __func__, port_number, lsr); 1626 edge_port->lsr_event = 1; 1627 edge_port->lsr_mask = lsr; 1628 } else { 1629 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1630 __func__, port_number, lsr); 1631 handle_new_lsr(edge_port, 0, lsr, 0); 1632 } 1633 break; 1634 1635 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1636 /* Copy MSR from UMP */ 1637 msr = data[1]; 1638 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1639 __func__, port_number, msr); 1640 handle_new_msr(edge_port, msr); 1641 break; 1642 1643 default: 1644 dev_err(&urb->dev->dev, 1645 "%s - Unknown Interrupt code from UMP %x\n", 1646 __func__, data[1]); 1647 break; 1648 1649 } 1650 1651exit: 1652 retval = usb_submit_urb(urb, GFP_ATOMIC); 1653 if (retval) 1654 dev_err(&urb->dev->dev, 1655 "%s - usb_submit_urb failed with result %d\n", 1656 __func__, retval); 1657} 1658 1659static void edge_bulk_in_callback(struct urb *urb) 1660{ 1661 struct edgeport_port *edge_port = urb->context; 1662 struct device *dev = &edge_port->port->dev; 1663 unsigned char *data = urb->transfer_buffer; 1664 struct tty_struct *tty; 1665 int retval = 0; 1666 int port_number; 1667 int status = urb->status; 1668 1669 switch (status) { 1670 case 0: 1671 /* success */ 1672 break; 1673 case -ECONNRESET: 1674 case -ENOENT: 1675 case -ESHUTDOWN: 1676 /* this urb is terminated, clean up */ 1677 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1678 return; 1679 default: 1680 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1681 } 1682 1683 if (status == -EPIPE) 1684 goto exit; 1685 1686 if (status) { 1687 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1688 return; 1689 } 1690 1691 port_number = edge_port->port->number - edge_port->port->serial->minor; 1692 1693 if (edge_port->lsr_event) { 1694 edge_port->lsr_event = 0; 1695 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1696 __func__, port_number, edge_port->lsr_mask, *data); 1697 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1698 /* Adjust buffer length/pointer */ 1699 --urb->actual_length; 1700 ++data; 1701 } 1702 1703 tty = tty_port_tty_get(&edge_port->port->port); 1704 if (tty && urb->actual_length) { 1705 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1706 if (edge_port->close_pending) 1707 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1708 __func__); 1709 else 1710 edge_tty_recv(dev, tty, data, urb->actual_length); 1711 edge_port->icount.rx += urb->actual_length; 1712 } 1713 tty_kref_put(tty); 1714 1715exit: 1716 /* continue read unless stopped */ 1717 spin_lock(&edge_port->ep_lock); 1718 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1719 retval = usb_submit_urb(urb, GFP_ATOMIC); 1720 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1721 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1722 1723 spin_unlock(&edge_port->ep_lock); 1724 if (retval) 1725 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1726} 1727 1728static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1729 unsigned char *data, int length) 1730{ 1731 int queued; 1732 1733 queued = tty_insert_flip_string(tty, data, length); 1734 if (queued < length) 1735 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1736 __func__, length - queued); 1737 tty_flip_buffer_push(tty); 1738} 1739 1740static void edge_bulk_out_callback(struct urb *urb) 1741{ 1742 struct usb_serial_port *port = urb->context; 1743 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1744 int status = urb->status; 1745 struct tty_struct *tty; 1746 1747 edge_port->ep_write_urb_in_use = 0; 1748 1749 switch (status) { 1750 case 0: 1751 /* success */ 1752 break; 1753 case -ECONNRESET: 1754 case -ENOENT: 1755 case -ESHUTDOWN: 1756 /* this urb is terminated, clean up */ 1757 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1758 __func__, status); 1759 return; 1760 default: 1761 dev_err_console(port, "%s - nonzero write bulk status " 1762 "received: %d\n", __func__, status); 1763 } 1764 1765 /* send any buffered data */ 1766 tty = tty_port_tty_get(&port->port); 1767 edge_send(tty); 1768 tty_kref_put(tty); 1769} 1770 1771static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1772{ 1773 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1774 struct edgeport_serial *edge_serial; 1775 struct usb_device *dev; 1776 struct urb *urb; 1777 int port_number; 1778 int status; 1779 u16 open_settings; 1780 u8 transaction_timeout; 1781 1782 if (edge_port == NULL) 1783 return -ENODEV; 1784 1785 port_number = port->number - port->serial->minor; 1786 switch (port_number) { 1787 case 0: 1788 edge_port->uart_base = UMPMEM_BASE_UART1; 1789 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1790 break; 1791 case 1: 1792 edge_port->uart_base = UMPMEM_BASE_UART2; 1793 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1794 break; 1795 default: 1796 dev_err(&port->dev, "Unknown port number!!!\n"); 1797 return -ENODEV; 1798 } 1799 1800 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1801 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1802 1803 dev = port->serial->dev; 1804 1805 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1806 init_waitqueue_head(&edge_port->delta_msr_wait); 1807 1808 /* turn off loopback */ 1809 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1810 if (status) { 1811 dev_err(&port->dev, 1812 "%s - cannot send clear loopback command, %d\n", 1813 __func__, status); 1814 return status; 1815 } 1816 1817 /* set up the port settings */ 1818 if (tty) 1819 edge_set_termios(tty, port, &tty->termios); 1820 1821 /* open up the port */ 1822 1823 /* milliseconds to timeout for DMA transfer */ 1824 transaction_timeout = 2; 1825 1826 edge_port->ump_read_timeout = 1827 max(20, ((transaction_timeout * 3) / 2)); 1828 1829 /* milliseconds to timeout for DMA transfer */ 1830 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1831 UMP_PIPE_TRANS_TIMEOUT_ENA | 1832 (transaction_timeout << 2)); 1833 1834 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1835 1836 /* Tell TI to open and start the port */ 1837 status = send_cmd(dev, UMPC_OPEN_PORT, 1838 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1839 if (status) { 1840 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1841 __func__, status); 1842 return status; 1843 } 1844 1845 /* Start the DMA? */ 1846 status = send_cmd(dev, UMPC_START_PORT, 1847 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1848 if (status) { 1849 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1850 __func__, status); 1851 return status; 1852 } 1853 1854 /* Clear TX and RX buffers in UMP */ 1855 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1856 if (status) { 1857 dev_err(&port->dev, 1858 "%s - cannot send clear buffers command, %d\n", 1859 __func__, status); 1860 return status; 1861 } 1862 1863 /* Read Initial MSR */ 1864 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1865 (__u16)(UMPM_UART1_PORT + port_number), 1866 &edge_port->shadow_msr, 1); 1867 if (status) { 1868 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1869 __func__, status); 1870 return status; 1871 } 1872 1873 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1874 1875 /* Set Initial MCR */ 1876 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1877 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1878 1879 edge_serial = edge_port->edge_serial; 1880 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1881 return -ERESTARTSYS; 1882 if (edge_serial->num_ports_open == 0) { 1883 /* we are the first port to open, post the interrupt urb */ 1884 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1885 if (!urb) { 1886 dev_err(&port->dev, 1887 "%s - no interrupt urb present, exiting\n", 1888 __func__); 1889 status = -EINVAL; 1890 goto release_es_lock; 1891 } 1892 urb->context = edge_serial; 1893 status = usb_submit_urb(urb, GFP_KERNEL); 1894 if (status) { 1895 dev_err(&port->dev, 1896 "%s - usb_submit_urb failed with value %d\n", 1897 __func__, status); 1898 goto release_es_lock; 1899 } 1900 } 1901 1902 /* 1903 * reset the data toggle on the bulk endpoints to work around bug in 1904 * host controllers where things get out of sync some times 1905 */ 1906 usb_clear_halt(dev, port->write_urb->pipe); 1907 usb_clear_halt(dev, port->read_urb->pipe); 1908 1909 /* start up our bulk read urb */ 1910 urb = port->read_urb; 1911 if (!urb) { 1912 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1913 __func__); 1914 status = -EINVAL; 1915 goto unlink_int_urb; 1916 } 1917 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1918 urb->context = edge_port; 1919 status = usb_submit_urb(urb, GFP_KERNEL); 1920 if (status) { 1921 dev_err(&port->dev, 1922 "%s - read bulk usb_submit_urb failed with value %d\n", 1923 __func__, status); 1924 goto unlink_int_urb; 1925 } 1926 1927 ++edge_serial->num_ports_open; 1928 1929 port->port.drain_delay = 1; 1930 1931 goto release_es_lock; 1932 1933unlink_int_urb: 1934 if (edge_port->edge_serial->num_ports_open == 0) 1935 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1936release_es_lock: 1937 mutex_unlock(&edge_serial->es_lock); 1938 return status; 1939} 1940 1941static void edge_close(struct usb_serial_port *port) 1942{ 1943 struct edgeport_serial *edge_serial; 1944 struct edgeport_port *edge_port; 1945 struct usb_serial *serial = port->serial; 1946 unsigned long flags; 1947 int port_number; 1948 1949 edge_serial = usb_get_serial_data(port->serial); 1950 edge_port = usb_get_serial_port_data(port); 1951 if (edge_serial == NULL || edge_port == NULL) 1952 return; 1953 1954 /* The bulkreadcompletion routine will check 1955 * this flag and dump add read data */ 1956 edge_port->close_pending = 1; 1957 1958 chase_port(edge_port, (HZ * closing_wait) / 100); 1959 1960 usb_kill_urb(port->read_urb); 1961 usb_kill_urb(port->write_urb); 1962 edge_port->ep_write_urb_in_use = 0; 1963 spin_lock_irqsave(&edge_port->ep_lock, flags); 1964 kfifo_reset_out(&edge_port->write_fifo); 1965 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1966 1967 /* assuming we can still talk to the device, 1968 * send a close port command to it */ 1969 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1970 port_number = port->number - port->serial->minor; 1971 1972 mutex_lock(&serial->disc_mutex); 1973 if (!serial->disconnected) { 1974 send_cmd(serial->dev, 1975 UMPC_CLOSE_PORT, 1976 (__u8)(UMPM_UART1_PORT + port_number), 1977 0, 1978 NULL, 1979 0); 1980 } 1981 mutex_unlock(&serial->disc_mutex); 1982 1983 mutex_lock(&edge_serial->es_lock); 1984 --edge_port->edge_serial->num_ports_open; 1985 if (edge_port->edge_serial->num_ports_open <= 0) { 1986 /* last port is now closed, let's shut down our interrupt urb */ 1987 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1988 edge_port->edge_serial->num_ports_open = 0; 1989 } 1990 mutex_unlock(&edge_serial->es_lock); 1991 edge_port->close_pending = 0; 1992} 1993 1994static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1995 const unsigned char *data, int count) 1996{ 1997 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1998 1999 if (count == 0) { 2000 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2001 return 0; 2002 } 2003 2004 if (edge_port == NULL) 2005 return -ENODEV; 2006 if (edge_port->close_pending == 1) 2007 return -ENODEV; 2008 2009 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2010 &edge_port->ep_lock); 2011 edge_send(tty); 2012 2013 return count; 2014} 2015 2016static void edge_send(struct tty_struct *tty) 2017{ 2018 struct usb_serial_port *port = tty->driver_data; 2019 int count, result; 2020 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2021 unsigned long flags; 2022 2023 spin_lock_irqsave(&edge_port->ep_lock, flags); 2024 2025 if (edge_port->ep_write_urb_in_use) { 2026 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2027 return; 2028 } 2029 2030 count = kfifo_out(&edge_port->write_fifo, 2031 port->write_urb->transfer_buffer, 2032 port->bulk_out_size); 2033 2034 if (count == 0) { 2035 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2036 return; 2037 } 2038 2039 edge_port->ep_write_urb_in_use = 1; 2040 2041 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2042 2043 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2044 2045 /* set up our urb */ 2046 port->write_urb->transfer_buffer_length = count; 2047 2048 /* send the data out the bulk port */ 2049 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2050 if (result) { 2051 dev_err_console(port, 2052 "%s - failed submitting write urb, error %d\n", 2053 __func__, result); 2054 edge_port->ep_write_urb_in_use = 0; 2055 /* TODO: reschedule edge_send */ 2056 } else 2057 edge_port->icount.tx += count; 2058 2059 /* wakeup any process waiting for writes to complete */ 2060 /* there is now more room in the buffer for new writes */ 2061 if (tty) 2062 tty_wakeup(tty); 2063} 2064 2065static int edge_write_room(struct tty_struct *tty) 2066{ 2067 struct usb_serial_port *port = tty->driver_data; 2068 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2069 int room = 0; 2070 unsigned long flags; 2071 2072 if (edge_port == NULL) 2073 return 0; 2074 if (edge_port->close_pending == 1) 2075 return 0; 2076 2077 spin_lock_irqsave(&edge_port->ep_lock, flags); 2078 room = kfifo_avail(&edge_port->write_fifo); 2079 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2080 2081 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2082 return room; 2083} 2084 2085static int edge_chars_in_buffer(struct tty_struct *tty) 2086{ 2087 struct usb_serial_port *port = tty->driver_data; 2088 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2089 int chars = 0; 2090 unsigned long flags; 2091 2092 if (edge_port == NULL) 2093 return 0; 2094 if (edge_port->close_pending == 1) 2095 return 0; 2096 2097 spin_lock_irqsave(&edge_port->ep_lock, flags); 2098 chars = kfifo_len(&edge_port->write_fifo); 2099 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2100 2101 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2102 return chars; 2103} 2104 2105static void edge_throttle(struct tty_struct *tty) 2106{ 2107 struct usb_serial_port *port = tty->driver_data; 2108 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2109 int status; 2110 2111 if (edge_port == NULL) 2112 return; 2113 2114 /* if we are implementing XON/XOFF, send the stop character */ 2115 if (I_IXOFF(tty)) { 2116 unsigned char stop_char = STOP_CHAR(tty); 2117 status = edge_write(tty, port, &stop_char, 1); 2118 if (status <= 0) { 2119 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2120 } 2121 } 2122 2123 /* if we are implementing RTS/CTS, stop reads */ 2124 /* and the Edgeport will clear the RTS line */ 2125 if (C_CRTSCTS(tty)) 2126 stop_read(edge_port); 2127 2128} 2129 2130static void edge_unthrottle(struct tty_struct *tty) 2131{ 2132 struct usb_serial_port *port = tty->driver_data; 2133 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2134 int status; 2135 2136 if (edge_port == NULL) 2137 return; 2138 2139 /* if we are implementing XON/XOFF, send the start character */ 2140 if (I_IXOFF(tty)) { 2141 unsigned char start_char = START_CHAR(tty); 2142 status = edge_write(tty, port, &start_char, 1); 2143 if (status <= 0) { 2144 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2145 } 2146 } 2147 /* if we are implementing RTS/CTS, restart reads */ 2148 /* are the Edgeport will assert the RTS line */ 2149 if (C_CRTSCTS(tty)) { 2150 status = restart_read(edge_port); 2151 if (status) 2152 dev_err(&port->dev, 2153 "%s - read bulk usb_submit_urb failed: %d\n", 2154 __func__, status); 2155 } 2156 2157} 2158 2159static void stop_read(struct edgeport_port *edge_port) 2160{ 2161 unsigned long flags; 2162 2163 spin_lock_irqsave(&edge_port->ep_lock, flags); 2164 2165 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2166 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2167 edge_port->shadow_mcr &= ~MCR_RTS; 2168 2169 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2170} 2171 2172static int restart_read(struct edgeport_port *edge_port) 2173{ 2174 struct urb *urb; 2175 int status = 0; 2176 unsigned long flags; 2177 2178 spin_lock_irqsave(&edge_port->ep_lock, flags); 2179 2180 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2181 urb = edge_port->port->read_urb; 2182 status = usb_submit_urb(urb, GFP_ATOMIC); 2183 } 2184 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2185 edge_port->shadow_mcr |= MCR_RTS; 2186 2187 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2188 2189 return status; 2190} 2191 2192static void change_port_settings(struct tty_struct *tty, 2193 struct edgeport_port *edge_port, struct ktermios *old_termios) 2194{ 2195 struct device *dev = &edge_port->port->dev; 2196 struct ump_uart_config *config; 2197 int baud; 2198 unsigned cflag; 2199 int status; 2200 int port_number = edge_port->port->number - 2201 edge_port->port->serial->minor; 2202 2203 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2204 2205 config = kmalloc (sizeof (*config), GFP_KERNEL); 2206 if (!config) { 2207 tty->termios = *old_termios; 2208 dev_err(dev, "%s - out of memory\n", __func__); 2209 return; 2210 } 2211 2212 cflag = tty->termios.c_cflag; 2213 2214 config->wFlags = 0; 2215 2216 /* These flags must be set */ 2217 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2218 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2219 config->bUartMode = (__u8)(edge_port->bUartMode); 2220 2221 switch (cflag & CSIZE) { 2222 case CS5: 2223 config->bDataBits = UMP_UART_CHAR5BITS; 2224 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2225 break; 2226 case CS6: 2227 config->bDataBits = UMP_UART_CHAR6BITS; 2228 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2229 break; 2230 case CS7: 2231 config->bDataBits = UMP_UART_CHAR7BITS; 2232 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2233 break; 2234 default: 2235 case CS8: 2236 config->bDataBits = UMP_UART_CHAR8BITS; 2237 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2238 break; 2239 } 2240 2241 if (cflag & PARENB) { 2242 if (cflag & PARODD) { 2243 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2244 config->bParity = UMP_UART_ODDPARITY; 2245 dev_dbg(dev, "%s - parity = odd\n", __func__); 2246 } else { 2247 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2248 config->bParity = UMP_UART_EVENPARITY; 2249 dev_dbg(dev, "%s - parity = even\n", __func__); 2250 } 2251 } else { 2252 config->bParity = UMP_UART_NOPARITY; 2253 dev_dbg(dev, "%s - parity = none\n", __func__); 2254 } 2255 2256 if (cflag & CSTOPB) { 2257 config->bStopBits = UMP_UART_STOPBIT2; 2258 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2259 } else { 2260 config->bStopBits = UMP_UART_STOPBIT1; 2261 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2262 } 2263 2264 /* figure out the flow control settings */ 2265 if (cflag & CRTSCTS) { 2266 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2267 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2268 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2269 } else { 2270 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2271 tty->hw_stopped = 0; 2272 restart_read(edge_port); 2273 } 2274 2275 /* if we are implementing XON/XOFF, set the start and stop 2276 character in the device */ 2277 config->cXon = START_CHAR(tty); 2278 config->cXoff = STOP_CHAR(tty); 2279 2280 /* if we are implementing INBOUND XON/XOFF */ 2281 if (I_IXOFF(tty)) { 2282 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2283 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2284 __func__, config->cXon, config->cXoff); 2285 } else 2286 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2287 2288 /* if we are implementing OUTBOUND XON/XOFF */ 2289 if (I_IXON(tty)) { 2290 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2291 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2292 __func__, config->cXon, config->cXoff); 2293 } else 2294 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2295 2296 tty->termios.c_cflag &= ~CMSPAR; 2297 2298 /* Round the baud rate */ 2299 baud = tty_get_baud_rate(tty); 2300 if (!baud) { 2301 /* pick a default, any default... */ 2302 baud = 9600; 2303 } else 2304 tty_encode_baud_rate(tty, baud, baud); 2305 2306 edge_port->baud_rate = baud; 2307 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2308 2309 /* FIXME: Recompute actual baud from divisor here */ 2310 2311 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2312 2313 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2314 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2315 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2316 dev_dbg(dev, "bParity: %d\n", config->bParity); 2317 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2318 dev_dbg(dev, "cXon: %d\n", config->cXon); 2319 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2320 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2321 2322 /* move the word values into big endian mode */ 2323 cpu_to_be16s(&config->wFlags); 2324 cpu_to_be16s(&config->wBaudRate); 2325 2326 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2327 (__u8)(UMPM_UART1_PORT + port_number), 2328 0, (__u8 *)config, sizeof(*config)); 2329 if (status) 2330 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2331 __func__, status); 2332 kfree(config); 2333} 2334 2335static void edge_set_termios(struct tty_struct *tty, 2336 struct usb_serial_port *port, struct ktermios *old_termios) 2337{ 2338 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2339 unsigned int cflag; 2340 2341 cflag = tty->termios.c_cflag; 2342 2343 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2344 tty->termios.c_cflag, tty->termios.c_iflag); 2345 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2346 old_termios->c_cflag, old_termios->c_iflag); 2347 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2348 2349 if (edge_port == NULL) 2350 return; 2351 /* change the port settings to the new ones specified */ 2352 change_port_settings(tty, edge_port, old_termios); 2353} 2354 2355static int edge_tiocmset(struct tty_struct *tty, 2356 unsigned int set, unsigned int clear) 2357{ 2358 struct usb_serial_port *port = tty->driver_data; 2359 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2360 unsigned int mcr; 2361 unsigned long flags; 2362 2363 spin_lock_irqsave(&edge_port->ep_lock, flags); 2364 mcr = edge_port->shadow_mcr; 2365 if (set & TIOCM_RTS) 2366 mcr |= MCR_RTS; 2367 if (set & TIOCM_DTR) 2368 mcr |= MCR_DTR; 2369 if (set & TIOCM_LOOP) 2370 mcr |= MCR_LOOPBACK; 2371 2372 if (clear & TIOCM_RTS) 2373 mcr &= ~MCR_RTS; 2374 if (clear & TIOCM_DTR) 2375 mcr &= ~MCR_DTR; 2376 if (clear & TIOCM_LOOP) 2377 mcr &= ~MCR_LOOPBACK; 2378 2379 edge_port->shadow_mcr = mcr; 2380 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2381 2382 restore_mcr(edge_port, mcr); 2383 return 0; 2384} 2385 2386static int edge_tiocmget(struct tty_struct *tty) 2387{ 2388 struct usb_serial_port *port = tty->driver_data; 2389 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2390 unsigned int result = 0; 2391 unsigned int msr; 2392 unsigned int mcr; 2393 unsigned long flags; 2394 2395 spin_lock_irqsave(&edge_port->ep_lock, flags); 2396 2397 msr = edge_port->shadow_msr; 2398 mcr = edge_port->shadow_mcr; 2399 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2400 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2401 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2402 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2403 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2404 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2405 2406 2407 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2408 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2409 2410 return result; 2411} 2412 2413static int edge_get_icount(struct tty_struct *tty, 2414 struct serial_icounter_struct *icount) 2415{ 2416 struct usb_serial_port *port = tty->driver_data; 2417 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2418 struct async_icount *ic = &edge_port->icount; 2419 2420 icount->cts = ic->cts; 2421 icount->dsr = ic->dsr; 2422 icount->rng = ic->rng; 2423 icount->dcd = ic->dcd; 2424 icount->tx = ic->tx; 2425 icount->rx = ic->rx; 2426 icount->frame = ic->frame; 2427 icount->parity = ic->parity; 2428 icount->overrun = ic->overrun; 2429 icount->brk = ic->brk; 2430 icount->buf_overrun = ic->buf_overrun; 2431 return 0; 2432} 2433 2434static int get_serial_info(struct edgeport_port *edge_port, 2435 struct serial_struct __user *retinfo) 2436{ 2437 struct serial_struct tmp; 2438 2439 if (!retinfo) 2440 return -EFAULT; 2441 2442 memset(&tmp, 0, sizeof(tmp)); 2443 2444 tmp.type = PORT_16550A; 2445 tmp.line = edge_port->port->serial->minor; 2446 tmp.port = edge_port->port->number; 2447 tmp.irq = 0; 2448 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2449 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2450 tmp.baud_base = 9600; 2451 tmp.close_delay = 5*HZ; 2452 tmp.closing_wait = closing_wait; 2453 2454 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2455 return -EFAULT; 2456 return 0; 2457} 2458 2459static int edge_ioctl(struct tty_struct *tty, 2460 unsigned int cmd, unsigned long arg) 2461{ 2462 struct usb_serial_port *port = tty->driver_data; 2463 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2464 struct async_icount cnow; 2465 struct async_icount cprev; 2466 2467 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2468 2469 switch (cmd) { 2470 case TIOCGSERIAL: 2471 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2472 return get_serial_info(edge_port, 2473 (struct serial_struct __user *) arg); 2474 case TIOCMIWAIT: 2475 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2476 cprev = edge_port->icount; 2477 while (1) { 2478 interruptible_sleep_on(&edge_port->delta_msr_wait); 2479 /* see if a signal did it */ 2480 if (signal_pending(current)) 2481 return -ERESTARTSYS; 2482 cnow = edge_port->icount; 2483 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2484 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2485 return -EIO; /* no change => error */ 2486 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2487 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2488 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2489 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2490 return 0; 2491 } 2492 cprev = cnow; 2493 } 2494 /* not reached */ 2495 break; 2496 } 2497 return -ENOIOCTLCMD; 2498} 2499 2500static void edge_break(struct tty_struct *tty, int break_state) 2501{ 2502 struct usb_serial_port *port = tty->driver_data; 2503 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2504 int status; 2505 int bv = 0; /* Off */ 2506 2507 /* chase the port close */ 2508 chase_port(edge_port, 0); 2509 2510 if (break_state == -1) 2511 bv = 1; /* On */ 2512 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2513 if (status) 2514 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2515 __func__, status); 2516} 2517 2518static int edge_startup(struct usb_serial *serial) 2519{ 2520 struct edgeport_serial *edge_serial; 2521 int status; 2522 2523 /* create our private serial structure */ 2524 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2525 if (edge_serial == NULL) { 2526 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2527 return -ENOMEM; 2528 } 2529 mutex_init(&edge_serial->es_lock); 2530 edge_serial->serial = serial; 2531 usb_set_serial_data(serial, edge_serial); 2532 2533 status = download_fw(edge_serial); 2534 if (status) { 2535 kfree(edge_serial); 2536 return status; 2537 } 2538 2539 return 0; 2540} 2541 2542static void edge_disconnect(struct usb_serial *serial) 2543{ 2544} 2545 2546static void edge_release(struct usb_serial *serial) 2547{ 2548 kfree(usb_get_serial_data(serial)); 2549} 2550 2551static int edge_port_probe(struct usb_serial_port *port) 2552{ 2553 struct edgeport_port *edge_port; 2554 int ret; 2555 2556 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2557 if (!edge_port) 2558 return -ENOMEM; 2559 2560 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2561 GFP_KERNEL); 2562 if (ret) { 2563 kfree(edge_port); 2564 return -ENOMEM; 2565 } 2566 2567 spin_lock_init(&edge_port->ep_lock); 2568 edge_port->port = port; 2569 edge_port->edge_serial = usb_get_serial_data(port->serial); 2570 edge_port->bUartMode = default_uart_mode; 2571 2572 usb_set_serial_port_data(port, edge_port); 2573 2574 ret = edge_create_sysfs_attrs(port); 2575 if (ret) { 2576 kfifo_free(&edge_port->write_fifo); 2577 kfree(edge_port); 2578 return ret; 2579 } 2580 2581 return 0; 2582} 2583 2584static int edge_port_remove(struct usb_serial_port *port) 2585{ 2586 struct edgeport_port *edge_port; 2587 2588 edge_port = usb_get_serial_port_data(port); 2589 2590 edge_remove_sysfs_attrs(port); 2591 kfifo_free(&edge_port->write_fifo); 2592 kfree(edge_port); 2593 2594 return 0; 2595} 2596 2597/* Sysfs Attributes */ 2598 2599static ssize_t show_uart_mode(struct device *dev, 2600 struct device_attribute *attr, char *buf) 2601{ 2602 struct usb_serial_port *port = to_usb_serial_port(dev); 2603 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2604 2605 return sprintf(buf, "%d\n", edge_port->bUartMode); 2606} 2607 2608static ssize_t store_uart_mode(struct device *dev, 2609 struct device_attribute *attr, const char *valbuf, size_t count) 2610{ 2611 struct usb_serial_port *port = to_usb_serial_port(dev); 2612 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2613 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2614 2615 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2616 2617 if (v < 256) 2618 edge_port->bUartMode = v; 2619 else 2620 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2621 2622 return count; 2623} 2624 2625static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2626 store_uart_mode); 2627 2628static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2629{ 2630 return device_create_file(&port->dev, &dev_attr_uart_mode); 2631} 2632 2633static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2634{ 2635 device_remove_file(&port->dev, &dev_attr_uart_mode); 2636 return 0; 2637} 2638 2639 2640static struct usb_serial_driver edgeport_1port_device = { 2641 .driver = { 2642 .owner = THIS_MODULE, 2643 .name = "edgeport_ti_1", 2644 }, 2645 .description = "Edgeport TI 1 port adapter", 2646 .id_table = edgeport_1port_id_table, 2647 .num_ports = 1, 2648 .open = edge_open, 2649 .close = edge_close, 2650 .throttle = edge_throttle, 2651 .unthrottle = edge_unthrottle, 2652 .attach = edge_startup, 2653 .disconnect = edge_disconnect, 2654 .release = edge_release, 2655 .port_probe = edge_port_probe, 2656 .port_remove = edge_port_remove, 2657 .ioctl = edge_ioctl, 2658 .set_termios = edge_set_termios, 2659 .tiocmget = edge_tiocmget, 2660 .tiocmset = edge_tiocmset, 2661 .get_icount = edge_get_icount, 2662 .write = edge_write, 2663 .write_room = edge_write_room, 2664 .chars_in_buffer = edge_chars_in_buffer, 2665 .break_ctl = edge_break, 2666 .read_int_callback = edge_interrupt_callback, 2667 .read_bulk_callback = edge_bulk_in_callback, 2668 .write_bulk_callback = edge_bulk_out_callback, 2669}; 2670 2671static struct usb_serial_driver edgeport_2port_device = { 2672 .driver = { 2673 .owner = THIS_MODULE, 2674 .name = "edgeport_ti_2", 2675 }, 2676 .description = "Edgeport TI 2 port adapter", 2677 .id_table = edgeport_2port_id_table, 2678 .num_ports = 2, 2679 .open = edge_open, 2680 .close = edge_close, 2681 .throttle = edge_throttle, 2682 .unthrottle = edge_unthrottle, 2683 .attach = edge_startup, 2684 .disconnect = edge_disconnect, 2685 .release = edge_release, 2686 .port_probe = edge_port_probe, 2687 .port_remove = edge_port_remove, 2688 .ioctl = edge_ioctl, 2689 .set_termios = edge_set_termios, 2690 .tiocmget = edge_tiocmget, 2691 .tiocmset = edge_tiocmset, 2692 .write = edge_write, 2693 .write_room = edge_write_room, 2694 .chars_in_buffer = edge_chars_in_buffer, 2695 .break_ctl = edge_break, 2696 .read_int_callback = edge_interrupt_callback, 2697 .read_bulk_callback = edge_bulk_in_callback, 2698 .write_bulk_callback = edge_bulk_out_callback, 2699}; 2700 2701static struct usb_serial_driver * const serial_drivers[] = { 2702 &edgeport_1port_device, &edgeport_2port_device, NULL 2703}; 2704 2705module_usb_serial_driver(serial_drivers, id_table_combined); 2706 2707MODULE_AUTHOR(DRIVER_AUTHOR); 2708MODULE_DESCRIPTION(DRIVER_DESC); 2709MODULE_LICENSE("GPL"); 2710MODULE_FIRMWARE("edgeport/down3.bin"); 2711 2712module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2713MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2714 2715module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2716MODULE_PARM_DESC(ignore_cpu_rev, 2717 "Ignore the cpu revision when connecting to a device"); 2718 2719module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2720MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2721