io_ti.c revision 759f3634267a67ac90f3fa7fc06510dfd43b4e45
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 * Version history: 20 * 21 * July 11, 2002 Removed 4 port device structure since all TI UMP 22 * chips have only 2 ports 23 * David Iacovelli (davidi@ionetworks.com) 24 * 25 */ 26 27#include <linux/kernel.h> 28#include <linux/jiffies.h> 29#include <linux/errno.h> 30#include <linux/init.h> 31#include <linux/slab.h> 32#include <linux/tty.h> 33#include <linux/tty_driver.h> 34#include <linux/tty_flip.h> 35#include <linux/module.h> 36#include <linux/spinlock.h> 37#include <linux/mutex.h> 38#include <linux/serial.h> 39#include <linux/ioctl.h> 40#include <linux/firmware.h> 41#include <linux/uaccess.h> 42#include <linux/usb.h> 43#include <linux/usb/serial.h> 44 45#include "io_16654.h" 46#include "io_usbvend.h" 47#include "io_ti.h" 48 49/* 50 * Version Information 51 */ 52#define DRIVER_VERSION "v0.7mode043006" 53#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 54#define DRIVER_DESC "Edgeport USB Serial Driver" 55 56#define EPROM_PAGE_SIZE 64 57 58 59struct edgeport_uart_buf_desc { 60 __u32 count; /* Number of bytes currently in buffer */ 61}; 62 63/* different hardware types */ 64#define HARDWARE_TYPE_930 0 65#define HARDWARE_TYPE_TIUMP 1 66 67/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 68#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 69#define TI_MODE_BOOT 1 /* Staying in boot mode */ 70#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 71#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 72 transitioning to download mode */ 73 74/* read urb state */ 75#define EDGE_READ_URB_RUNNING 0 76#define EDGE_READ_URB_STOPPING 1 77#define EDGE_READ_URB_STOPPED 2 78 79#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 80 81#define EDGE_OUT_BUF_SIZE 1024 82 83 84/* Product information read from the Edgeport */ 85struct product_info { 86 int TiMode; /* Current TI Mode */ 87 __u8 hardware_type; /* Type of hardware */ 88} __attribute__((packed)); 89 90/* circular buffer */ 91struct edge_buf { 92 unsigned int buf_size; 93 char *buf_buf; 94 char *buf_get; 95 char *buf_put; 96}; 97 98struct edgeport_port { 99 __u16 uart_base; 100 __u16 dma_address; 101 __u8 shadow_msr; 102 __u8 shadow_mcr; 103 __u8 shadow_lsr; 104 __u8 lsr_mask; 105 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 106 wait without data before completing 107 a read short */ 108 int baud_rate; 109 int close_pending; 110 int lsr_event; 111 struct edgeport_uart_buf_desc tx; 112 struct async_icount icount; 113 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 114 waiting for msr change to 115 happen */ 116 struct edgeport_serial *edge_serial; 117 struct usb_serial_port *port; 118 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 119 spinlock_t ep_lock; 120 int ep_read_urb_state; 121 int ep_write_urb_in_use; 122 struct edge_buf *ep_out_buf; 123}; 124 125struct edgeport_serial { 126 struct product_info product_info; 127 u8 TI_I2C_Type; /* Type of I2C in UMP */ 128 u8 TiReadI2C; /* Set to TRUE if we have read the 129 I2c in Boot Mode */ 130 struct mutex es_lock; 131 int num_ports_open; 132 struct usb_serial *serial; 133}; 134 135 136/* Devices that this driver supports */ 137static const struct usb_device_id edgeport_1port_id_table[] = { 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 154 { } 155}; 156 157static const struct usb_device_id edgeport_2port_id_table[] = { 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 170 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 176 { } 177}; 178 179/* Devices that this driver supports */ 180static const struct usb_device_id id_table_combined[] = { 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 209 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 210 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 211 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 212 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 213 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 214 { } 215}; 216 217MODULE_DEVICE_TABLE(usb, id_table_combined); 218 219static struct usb_driver io_driver = { 220 .name = "io_ti", 221 .probe = usb_serial_probe, 222 .disconnect = usb_serial_disconnect, 223 .id_table = id_table_combined, 224 .no_dynamic_id = 1, 225}; 226 227 228static unsigned char OperationalMajorVersion; 229static unsigned char OperationalMinorVersion; 230static unsigned short OperationalBuildNumber; 231 232static int debug; 233 234static int closing_wait = EDGE_CLOSING_WAIT; 235static int ignore_cpu_rev; 236static int default_uart_mode; /* RS232 */ 237 238static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 239 unsigned char *data, int length); 240 241static void stop_read(struct edgeport_port *edge_port); 242static int restart_read(struct edgeport_port *edge_port); 243 244static void edge_set_termios(struct tty_struct *tty, 245 struct usb_serial_port *port, struct ktermios *old_termios); 246static void edge_send(struct tty_struct *tty); 247 248/* sysfs attributes */ 249static int edge_create_sysfs_attrs(struct usb_serial_port *port); 250static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 251 252/* circular buffer */ 253static struct edge_buf *edge_buf_alloc(unsigned int size); 254static void edge_buf_free(struct edge_buf *eb); 255static void edge_buf_clear(struct edge_buf *eb); 256static unsigned int edge_buf_data_avail(struct edge_buf *eb); 257static unsigned int edge_buf_space_avail(struct edge_buf *eb); 258static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, 259 unsigned int count); 260static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, 261 unsigned int count); 262 263 264static int ti_vread_sync(struct usb_device *dev, __u8 request, 265 __u16 value, __u16 index, u8 *data, int size) 266{ 267 int status; 268 269 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 270 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 271 value, index, data, size, 1000); 272 if (status < 0) 273 return status; 274 if (status != size) { 275 dbg("%s - wanted to write %d, but only wrote %d", 276 __func__, size, status); 277 return -ECOMM; 278 } 279 return 0; 280} 281 282static int ti_vsend_sync(struct usb_device *dev, __u8 request, 283 __u16 value, __u16 index, u8 *data, int size) 284{ 285 int status; 286 287 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 288 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 289 value, index, data, size, 1000); 290 if (status < 0) 291 return status; 292 if (status != size) { 293 dbg("%s - wanted to write %d, but only wrote %d", 294 __func__, size, status); 295 return -ECOMM; 296 } 297 return 0; 298} 299 300static int send_cmd(struct usb_device *dev, __u8 command, 301 __u8 moduleid, __u16 value, u8 *data, 302 int size) 303{ 304 return ti_vsend_sync(dev, command, value, moduleid, data, size); 305} 306 307/* clear tx/rx buffers and fifo in TI UMP */ 308static int purge_port(struct usb_serial_port *port, __u16 mask) 309{ 310 int port_number = port->number - port->serial->minor; 311 312 dbg("%s - port %d, mask %x", __func__, port_number, mask); 313 314 return send_cmd(port->serial->dev, 315 UMPC_PURGE_PORT, 316 (__u8)(UMPM_UART1_PORT + port_number), 317 mask, 318 NULL, 319 0); 320} 321 322/** 323 * read_download_mem - Read edgeport memory from TI chip 324 * @dev: usb device pointer 325 * @start_address: Device CPU address at which to read 326 * @length: Length of above data 327 * @address_type: Can read both XDATA and I2C 328 * @buffer: pointer to input data buffer 329 */ 330static int read_download_mem(struct usb_device *dev, int start_address, 331 int length, __u8 address_type, __u8 *buffer) 332{ 333 int status = 0; 334 __u8 read_length; 335 __be16 be_start_address; 336 337 dbg("%s - @ %x for %d", __func__, start_address, length); 338 339 /* Read in blocks of 64 bytes 340 * (TI firmware can't handle more than 64 byte reads) 341 */ 342 while (length) { 343 if (length > 64) 344 read_length = 64; 345 else 346 read_length = (__u8)length; 347 348 if (read_length > 1) { 349 dbg("%s - @ %x for %d", __func__, 350 start_address, read_length); 351 } 352 be_start_address = cpu_to_be16(start_address); 353 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 354 (__u16)address_type, 355 (__force __u16)be_start_address, 356 buffer, read_length); 357 358 if (status) { 359 dbg("%s - ERROR %x", __func__, status); 360 return status; 361 } 362 363 if (read_length > 1) 364 usb_serial_debug_data(debug, &dev->dev, __func__, 365 read_length, buffer); 366 367 /* Update pointers/length */ 368 start_address += read_length; 369 buffer += read_length; 370 length -= read_length; 371 } 372 373 return status; 374} 375 376static int read_ram(struct usb_device *dev, int start_address, 377 int length, __u8 *buffer) 378{ 379 return read_download_mem(dev, start_address, length, 380 DTK_ADDR_SPACE_XDATA, buffer); 381} 382 383/* Read edgeport memory to a given block */ 384static int read_boot_mem(struct edgeport_serial *serial, 385 int start_address, int length, __u8 *buffer) 386{ 387 int status = 0; 388 int i; 389 390 for (i = 0; i < length; i++) { 391 status = ti_vread_sync(serial->serial->dev, 392 UMPC_MEMORY_READ, serial->TI_I2C_Type, 393 (__u16)(start_address+i), &buffer[i], 0x01); 394 if (status) { 395 dbg("%s - ERROR %x", __func__, status); 396 return status; 397 } 398 } 399 400 dbg("%s - start_address = %x, length = %d", 401 __func__, start_address, length); 402 usb_serial_debug_data(debug, &serial->serial->dev->dev, 403 __func__, length, buffer); 404 405 serial->TiReadI2C = 1; 406 407 return status; 408} 409 410/* Write given block to TI EPROM memory */ 411static int write_boot_mem(struct edgeport_serial *serial, 412 int start_address, int length, __u8 *buffer) 413{ 414 int status = 0; 415 int i; 416 u8 *temp; 417 418 /* Must do a read before write */ 419 if (!serial->TiReadI2C) { 420 temp = kmalloc(1, GFP_KERNEL); 421 if (!temp) { 422 dev_err(&serial->serial->dev->dev, 423 "%s - out of memory\n", __func__); 424 return -ENOMEM; 425 } 426 status = read_boot_mem(serial, 0, 1, temp); 427 kfree(temp); 428 if (status) 429 return status; 430 } 431 432 for (i = 0; i < length; ++i) { 433 status = ti_vsend_sync(serial->serial->dev, 434 UMPC_MEMORY_WRITE, buffer[i], 435 (__u16)(i + start_address), NULL, 0); 436 if (status) 437 return status; 438 } 439 440 dbg("%s - start_sddr = %x, length = %d", 441 __func__, start_address, length); 442 usb_serial_debug_data(debug, &serial->serial->dev->dev, 443 __func__, length, buffer); 444 445 return status; 446} 447 448 449/* Write edgeport I2C memory to TI chip */ 450static int write_i2c_mem(struct edgeport_serial *serial, 451 int start_address, int length, __u8 address_type, __u8 *buffer) 452{ 453 int status = 0; 454 int write_length; 455 __be16 be_start_address; 456 457 /* We can only send a maximum of 1 aligned byte page at a time */ 458 459 /* calulate the number of bytes left in the first page */ 460 write_length = EPROM_PAGE_SIZE - 461 (start_address & (EPROM_PAGE_SIZE - 1)); 462 463 if (write_length > length) 464 write_length = length; 465 466 dbg("%s - BytesInFirstPage Addr = %x, length = %d", 467 __func__, start_address, write_length); 468 usb_serial_debug_data(debug, &serial->serial->dev->dev, 469 __func__, write_length, buffer); 470 471 /* Write first page */ 472 be_start_address = cpu_to_be16(start_address); 473 status = ti_vsend_sync(serial->serial->dev, 474 UMPC_MEMORY_WRITE, (__u16)address_type, 475 (__force __u16)be_start_address, 476 buffer, write_length); 477 if (status) { 478 dbg("%s - ERROR %d", __func__, status); 479 return status; 480 } 481 482 length -= write_length; 483 start_address += write_length; 484 buffer += write_length; 485 486 /* We should be aligned now -- can write 487 max page size bytes at a time */ 488 while (length) { 489 if (length > EPROM_PAGE_SIZE) 490 write_length = EPROM_PAGE_SIZE; 491 else 492 write_length = length; 493 494 dbg("%s - Page Write Addr = %x, length = %d", 495 __func__, start_address, write_length); 496 usb_serial_debug_data(debug, &serial->serial->dev->dev, 497 __func__, write_length, buffer); 498 499 /* Write next page */ 500 be_start_address = cpu_to_be16(start_address); 501 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 502 (__u16)address_type, 503 (__force __u16)be_start_address, 504 buffer, write_length); 505 if (status) { 506 dev_err(&serial->serial->dev->dev, "%s - ERROR %d\n", 507 __func__, status); 508 return status; 509 } 510 511 length -= write_length; 512 start_address += write_length; 513 buffer += write_length; 514 } 515 return status; 516} 517 518/* Examine the UMP DMA registers and LSR 519 * 520 * Check the MSBit of the X and Y DMA byte count registers. 521 * A zero in this bit indicates that the TX DMA buffers are empty 522 * then check the TX Empty bit in the UART. 523 */ 524static int tx_active(struct edgeport_port *port) 525{ 526 int status; 527 struct out_endpoint_desc_block *oedb; 528 __u8 *lsr; 529 int bytes_left = 0; 530 531 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 532 if (!oedb) { 533 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 534 return -ENOMEM; 535 } 536 537 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 538 as not all platforms can do DMA 539 from stack */ 540 if (!lsr) { 541 kfree(oedb); 542 return -ENOMEM; 543 } 544 /* Read the DMA Count Registers */ 545 status = read_ram(port->port->serial->dev, port->dma_address, 546 sizeof(*oedb), (void *)oedb); 547 if (status) 548 goto exit_is_tx_active; 549 550 dbg("%s - XByteCount 0x%X", __func__, oedb->XByteCount); 551 552 /* and the LSR */ 553 status = read_ram(port->port->serial->dev, 554 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 555 556 if (status) 557 goto exit_is_tx_active; 558 dbg("%s - LSR = 0x%X", __func__, *lsr); 559 560 /* If either buffer has data or we are transmitting then return TRUE */ 561 if ((oedb->XByteCount & 0x80) != 0) 562 bytes_left += 64; 563 564 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 565 bytes_left += 1; 566 567 /* We return Not Active if we get any kind of error */ 568exit_is_tx_active: 569 dbg("%s - return %d", __func__, bytes_left); 570 571 kfree(lsr); 572 kfree(oedb); 573 return bytes_left; 574} 575 576static void chase_port(struct edgeport_port *port, unsigned long timeout, 577 int flush) 578{ 579 int baud_rate; 580 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 581 wait_queue_t wait; 582 unsigned long flags; 583 584 if (!timeout) 585 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 586 587 /* wait for data to drain from the buffer */ 588 spin_lock_irqsave(&port->ep_lock, flags); 589 init_waitqueue_entry(&wait, current); 590 add_wait_queue(&tty->write_wait, &wait); 591 for (;;) { 592 set_current_state(TASK_INTERRUPTIBLE); 593 if (edge_buf_data_avail(port->ep_out_buf) == 0 594 || timeout == 0 || signal_pending(current) 595 || !usb_get_intfdata(port->port->serial->interface)) 596 /* disconnect */ 597 break; 598 spin_unlock_irqrestore(&port->ep_lock, flags); 599 timeout = schedule_timeout(timeout); 600 spin_lock_irqsave(&port->ep_lock, flags); 601 } 602 set_current_state(TASK_RUNNING); 603 remove_wait_queue(&tty->write_wait, &wait); 604 if (flush) 605 edge_buf_clear(port->ep_out_buf); 606 spin_unlock_irqrestore(&port->ep_lock, flags); 607 tty_kref_put(tty); 608 609 /* wait for data to drain from the device */ 610 timeout += jiffies; 611 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 612 && usb_get_intfdata(port->port->serial->interface)) { 613 /* not disconnected */ 614 if (!tx_active(port)) 615 break; 616 msleep(10); 617 } 618 619 /* disconnected */ 620 if (!usb_get_intfdata(port->port->serial->interface)) 621 return; 622 623 /* wait one more character time, based on baud rate */ 624 /* (tx_active doesn't seem to wait for the last byte) */ 625 baud_rate = port->baud_rate; 626 if (baud_rate == 0) 627 baud_rate = 50; 628 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 629} 630 631static int choose_config(struct usb_device *dev) 632{ 633 /* 634 * There may be multiple configurations on this device, in which case 635 * we would need to read and parse all of them to find out which one 636 * we want. However, we just support one config at this point, 637 * configuration # 1, which is Config Descriptor 0. 638 */ 639 640 dbg("%s - Number of Interfaces = %d", 641 __func__, dev->config->desc.bNumInterfaces); 642 dbg("%s - MAX Power = %d", 643 __func__, dev->config->desc.bMaxPower * 2); 644 645 if (dev->config->desc.bNumInterfaces != 1) { 646 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", 647 __func__); 648 return -ENODEV; 649 } 650 651 return 0; 652} 653 654static int read_rom(struct edgeport_serial *serial, 655 int start_address, int length, __u8 *buffer) 656{ 657 int status; 658 659 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 660 status = read_download_mem(serial->serial->dev, 661 start_address, 662 length, 663 serial->TI_I2C_Type, 664 buffer); 665 } else { 666 status = read_boot_mem(serial, start_address, length, 667 buffer); 668 } 669 return status; 670} 671 672static int write_rom(struct edgeport_serial *serial, int start_address, 673 int length, __u8 *buffer) 674{ 675 if (serial->product_info.TiMode == TI_MODE_BOOT) 676 return write_boot_mem(serial, start_address, length, 677 buffer); 678 679 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 680 return write_i2c_mem(serial, start_address, length, 681 serial->TI_I2C_Type, buffer); 682 return -EINVAL; 683} 684 685 686 687/* Read a descriptor header from I2C based on type */ 688static int get_descriptor_addr(struct edgeport_serial *serial, 689 int desc_type, struct ti_i2c_desc *rom_desc) 690{ 691 int start_address; 692 int status; 693 694 /* Search for requested descriptor in I2C */ 695 start_address = 2; 696 do { 697 status = read_rom(serial, 698 start_address, 699 sizeof(struct ti_i2c_desc), 700 (__u8 *)rom_desc); 701 if (status) 702 return 0; 703 704 if (rom_desc->Type == desc_type) 705 return start_address; 706 707 start_address = start_address + sizeof(struct ti_i2c_desc) 708 + rom_desc->Size; 709 710 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 711 712 return 0; 713} 714 715/* Validate descriptor checksum */ 716static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 717{ 718 __u16 i; 719 __u8 cs = 0; 720 721 for (i = 0; i < rom_desc->Size; i++) 722 cs = (__u8)(cs + buffer[i]); 723 724 if (cs != rom_desc->CheckSum) { 725 dbg("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 726 return -EINVAL; 727 } 728 return 0; 729} 730 731/* Make sure that the I2C image is good */ 732static int check_i2c_image(struct edgeport_serial *serial) 733{ 734 struct device *dev = &serial->serial->dev->dev; 735 int status = 0; 736 struct ti_i2c_desc *rom_desc; 737 int start_address = 2; 738 __u8 *buffer; 739 __u16 ttype; 740 741 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 742 if (!rom_desc) { 743 dev_err(dev, "%s - out of memory\n", __func__); 744 return -ENOMEM; 745 } 746 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 747 if (!buffer) { 748 dev_err(dev, "%s - out of memory when allocating buffer\n", 749 __func__); 750 kfree(rom_desc); 751 return -ENOMEM; 752 } 753 754 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 755 status = read_rom(serial, 0, 1, buffer); 756 if (status) 757 goto out; 758 759 if (*buffer != UMP5152 && *buffer != UMP3410) { 760 dev_err(dev, "%s - invalid buffer signature\n", __func__); 761 status = -ENODEV; 762 goto out; 763 } 764 765 do { 766 /* Validate the I2C */ 767 status = read_rom(serial, 768 start_address, 769 sizeof(struct ti_i2c_desc), 770 (__u8 *)rom_desc); 771 if (status) 772 break; 773 774 if ((start_address + sizeof(struct ti_i2c_desc) + 775 rom_desc->Size) > TI_MAX_I2C_SIZE) { 776 status = -ENODEV; 777 dbg("%s - structure too big, erroring out.", __func__); 778 break; 779 } 780 781 dbg("%s Type = 0x%x", __func__, rom_desc->Type); 782 783 /* Skip type 2 record */ 784 ttype = rom_desc->Type & 0x0f; 785 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 786 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 787 /* Read the descriptor data */ 788 status = read_rom(serial, start_address + 789 sizeof(struct ti_i2c_desc), 790 rom_desc->Size, buffer); 791 if (status) 792 break; 793 794 status = valid_csum(rom_desc, buffer); 795 if (status) 796 break; 797 } 798 start_address = start_address + sizeof(struct ti_i2c_desc) + 799 rom_desc->Size; 800 801 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 802 (start_address < TI_MAX_I2C_SIZE)); 803 804 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 805 (start_address > TI_MAX_I2C_SIZE)) 806 status = -ENODEV; 807 808out: 809 kfree(buffer); 810 kfree(rom_desc); 811 return status; 812} 813 814static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 815{ 816 int status; 817 int start_address; 818 struct ti_i2c_desc *rom_desc; 819 struct edge_ti_manuf_descriptor *desc; 820 821 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 822 if (!rom_desc) { 823 dev_err(&serial->serial->dev->dev, "%s - out of memory\n", 824 __func__); 825 return -ENOMEM; 826 } 827 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 828 rom_desc); 829 830 if (!start_address) { 831 dbg("%s - Edge Descriptor not found in I2C", __func__); 832 status = -ENODEV; 833 goto exit; 834 } 835 836 /* Read the descriptor data */ 837 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 838 rom_desc->Size, buffer); 839 if (status) 840 goto exit; 841 842 status = valid_csum(rom_desc, buffer); 843 844 desc = (struct edge_ti_manuf_descriptor *)buffer; 845 dbg("%s - IonConfig 0x%x", __func__, desc->IonConfig); 846 dbg("%s - Version %d", __func__, desc->Version); 847 dbg("%s - Cpu/Board 0x%x", __func__, desc->CpuRev_BoardRev); 848 dbg("%s - NumPorts %d", __func__, desc->NumPorts); 849 dbg("%s - NumVirtualPorts %d", __func__, desc->NumVirtualPorts); 850 dbg("%s - TotalPorts %d", __func__, desc->TotalPorts); 851 852exit: 853 kfree(rom_desc); 854 return status; 855} 856 857/* Build firmware header used for firmware update */ 858static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 859{ 860 __u8 *buffer; 861 int buffer_size; 862 int i; 863 int err; 864 __u8 cs = 0; 865 struct ti_i2c_desc *i2c_header; 866 struct ti_i2c_image_header *img_header; 867 struct ti_i2c_firmware_rec *firmware_rec; 868 const struct firmware *fw; 869 const char *fw_name = "edgeport/down3.bin"; 870 871 /* In order to update the I2C firmware we must change the type 2 record 872 * to type 0xF2. This will force the UMP to come up in Boot Mode. 873 * Then while in boot mode, the driver will download the latest 874 * firmware (padded to 15.5k) into the UMP ram. And finally when the 875 * device comes back up in download mode the driver will cause the new 876 * firmware to be copied from the UMP Ram to I2C and the firmware will 877 * update the record type from 0xf2 to 0x02. 878 */ 879 880 /* Allocate a 15.5k buffer + 2 bytes for version number 881 * (Firmware Record) */ 882 buffer_size = (((1024 * 16) - 512 ) + 883 sizeof(struct ti_i2c_firmware_rec)); 884 885 buffer = kmalloc(buffer_size, GFP_KERNEL); 886 if (!buffer) { 887 dev_err(dev, "%s - out of memory\n", __func__); 888 return -ENOMEM; 889 } 890 891 // Set entire image of 0xffs 892 memset(buffer, 0xff, buffer_size); 893 894 err = request_firmware(&fw, fw_name, dev); 895 if (err) { 896 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 897 fw_name, err); 898 kfree(buffer); 899 return err; 900 } 901 902 /* Save Download Version Number */ 903 OperationalMajorVersion = fw->data[0]; 904 OperationalMinorVersion = fw->data[1]; 905 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 906 907 /* Copy version number into firmware record */ 908 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 909 910 firmware_rec->Ver_Major = OperationalMajorVersion; 911 firmware_rec->Ver_Minor = OperationalMinorVersion; 912 913 /* Pointer to fw_down memory image */ 914 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 915 916 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 917 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 918 le16_to_cpu(img_header->Length)); 919 920 release_firmware(fw); 921 922 for (i=0; i < buffer_size; i++) { 923 cs = (__u8)(cs + buffer[i]); 924 } 925 926 kfree(buffer); 927 928 /* Build new header */ 929 i2c_header = (struct ti_i2c_desc *)header; 930 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 931 932 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 933 i2c_header->Size = (__u16)buffer_size; 934 i2c_header->CheckSum = cs; 935 firmware_rec->Ver_Major = OperationalMajorVersion; 936 firmware_rec->Ver_Minor = OperationalMinorVersion; 937 938 return 0; 939} 940 941/* Try to figure out what type of I2c we have */ 942static int i2c_type_bootmode(struct edgeport_serial *serial) 943{ 944 int status; 945 u8 *data; 946 947 data = kmalloc(1, GFP_KERNEL); 948 if (!data) { 949 dev_err(&serial->serial->dev->dev, 950 "%s - out of memory\n", __func__); 951 return -ENOMEM; 952 } 953 954 /* Try to read type 2 */ 955 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 956 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 957 if (status) 958 dbg("%s - read 2 status error = %d", __func__, status); 959 else 960 dbg("%s - read 2 data = 0x%x", __func__, *data); 961 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 962 dbg("%s - ROM_TYPE_II", __func__); 963 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 964 goto out; 965 } 966 967 /* Try to read type 3 */ 968 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 969 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 970 if (status) 971 dbg("%s - read 3 status error = %d", __func__, status); 972 else 973 dbg("%s - read 2 data = 0x%x", __func__, *data); 974 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 975 dbg("%s - ROM_TYPE_III", __func__); 976 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 977 goto out; 978 } 979 980 dbg("%s - Unknown", __func__); 981 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 982 status = -ENODEV; 983out: 984 kfree(data); 985 return status; 986} 987 988static int bulk_xfer(struct usb_serial *serial, void *buffer, 989 int length, int *num_sent) 990{ 991 int status; 992 993 status = usb_bulk_msg(serial->dev, 994 usb_sndbulkpipe(serial->dev, 995 serial->port[0]->bulk_out_endpointAddress), 996 buffer, length, num_sent, 1000); 997 return status; 998} 999 1000/* Download given firmware image to the device (IN BOOT MODE) */ 1001static int download_code(struct edgeport_serial *serial, __u8 *image, 1002 int image_length) 1003{ 1004 int status = 0; 1005 int pos; 1006 int transfer; 1007 int done; 1008 1009 /* Transfer firmware image */ 1010 for (pos = 0; pos < image_length; ) { 1011 /* Read the next buffer from file */ 1012 transfer = image_length - pos; 1013 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 1014 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 1015 1016 /* Transfer data */ 1017 status = bulk_xfer(serial->serial, &image[pos], 1018 transfer, &done); 1019 if (status) 1020 break; 1021 /* Advance buffer pointer */ 1022 pos += done; 1023 } 1024 1025 return status; 1026} 1027 1028/* FIXME!!! */ 1029static int config_boot_dev(struct usb_device *dev) 1030{ 1031 return 0; 1032} 1033 1034static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 1035{ 1036 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 1037} 1038 1039/** 1040 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 1041 * 1042 * This routine downloads the main operating code into the TI5052, using the 1043 * boot code already burned into E2PROM or ROM. 1044 */ 1045static int download_fw(struct edgeport_serial *serial) 1046{ 1047 struct device *dev = &serial->serial->dev->dev; 1048 int status = 0; 1049 int start_address; 1050 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1051 struct usb_interface_descriptor *interface; 1052 int download_cur_ver; 1053 int download_new_ver; 1054 1055 /* This routine is entered by both the BOOT mode and the Download mode 1056 * We can determine which code is running by the reading the config 1057 * descriptor and if we have only one bulk pipe it is in boot mode 1058 */ 1059 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1060 1061 /* Default to type 2 i2c */ 1062 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1063 1064 status = choose_config(serial->serial->dev); 1065 if (status) 1066 return status; 1067 1068 interface = &serial->serial->interface->cur_altsetting->desc; 1069 if (!interface) { 1070 dev_err(dev, "%s - no interface set, error!\n", __func__); 1071 return -ENODEV; 1072 } 1073 1074 /* 1075 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1076 * if we have more than one endpoint we are definitely in download 1077 * mode 1078 */ 1079 if (interface->bNumEndpoints > 1) 1080 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1081 else 1082 /* Otherwise we will remain in configuring mode */ 1083 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1084 1085 /********************************************************************/ 1086 /* Download Mode */ 1087 /********************************************************************/ 1088 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1089 struct ti_i2c_desc *rom_desc; 1090 1091 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__); 1092 1093 status = check_i2c_image(serial); 1094 if (status) { 1095 dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__); 1096 return status; 1097 } 1098 1099 /* Validate Hardware version number 1100 * Read Manufacturing Descriptor from TI Based Edgeport 1101 */ 1102 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1103 if (!ti_manuf_desc) { 1104 dev_err(dev, "%s - out of memory.\n", __func__); 1105 return -ENOMEM; 1106 } 1107 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1108 if (status) { 1109 kfree(ti_manuf_desc); 1110 return status; 1111 } 1112 1113 /* Check version number of ION descriptor */ 1114 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1115 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1116 __func__, ti_cpu_rev(ti_manuf_desc)); 1117 kfree(ti_manuf_desc); 1118 return -EINVAL; 1119 } 1120 1121 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1122 if (!rom_desc) { 1123 dev_err(dev, "%s - out of memory.\n", __func__); 1124 kfree(ti_manuf_desc); 1125 return -ENOMEM; 1126 } 1127 1128 /* Search for type 2 record (firmware record) */ 1129 start_address = get_descriptor_addr(serial, 1130 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1131 if (start_address != 0) { 1132 struct ti_i2c_firmware_rec *firmware_version; 1133 u8 *record; 1134 1135 dbg("%s - Found Type FIRMWARE (Type 2) record", 1136 __func__); 1137 1138 firmware_version = kmalloc(sizeof(*firmware_version), 1139 GFP_KERNEL); 1140 if (!firmware_version) { 1141 dev_err(dev, "%s - out of memory.\n", __func__); 1142 kfree(rom_desc); 1143 kfree(ti_manuf_desc); 1144 return -ENOMEM; 1145 } 1146 1147 /* Validate version number 1148 * Read the descriptor data 1149 */ 1150 status = read_rom(serial, start_address + 1151 sizeof(struct ti_i2c_desc), 1152 sizeof(struct ti_i2c_firmware_rec), 1153 (__u8 *)firmware_version); 1154 if (status) { 1155 kfree(firmware_version); 1156 kfree(rom_desc); 1157 kfree(ti_manuf_desc); 1158 return status; 1159 } 1160 1161 /* Check version number of download with current 1162 version in I2c */ 1163 download_cur_ver = (firmware_version->Ver_Major << 8) + 1164 (firmware_version->Ver_Minor); 1165 download_new_ver = (OperationalMajorVersion << 8) + 1166 (OperationalMinorVersion); 1167 1168 dbg("%s - >> FW Versions Device %d.%d Driver %d.%d", 1169 __func__, 1170 firmware_version->Ver_Major, 1171 firmware_version->Ver_Minor, 1172 OperationalMajorVersion, 1173 OperationalMinorVersion); 1174 1175 /* Check if we have an old version in the I2C and 1176 update if necessary */ 1177 if (download_cur_ver != download_new_ver) { 1178 dbg("%s - Update I2C dld from %d.%d to %d.%d", 1179 __func__, 1180 firmware_version->Ver_Major, 1181 firmware_version->Ver_Minor, 1182 OperationalMajorVersion, 1183 OperationalMinorVersion); 1184 1185 record = kmalloc(1, GFP_KERNEL); 1186 if (!record) { 1187 dev_err(dev, "%s - out of memory.\n", 1188 __func__); 1189 kfree(firmware_version); 1190 kfree(rom_desc); 1191 kfree(ti_manuf_desc); 1192 return -ENOMEM; 1193 } 1194 /* In order to update the I2C firmware we must 1195 * change the type 2 record to type 0xF2. This 1196 * will force the UMP to come up in Boot Mode. 1197 * Then while in boot mode, the driver will 1198 * download the latest firmware (padded to 1199 * 15.5k) into the UMP ram. Finally when the 1200 * device comes back up in download mode the 1201 * driver will cause the new firmware to be 1202 * copied from the UMP Ram to I2C and the 1203 * firmware will update the record type from 1204 * 0xf2 to 0x02. 1205 */ 1206 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1207 1208 /* Change the I2C Firmware record type to 1209 0xf2 to trigger an update */ 1210 status = write_rom(serial, start_address, 1211 sizeof(*record), record); 1212 if (status) { 1213 kfree(record); 1214 kfree(firmware_version); 1215 kfree(rom_desc); 1216 kfree(ti_manuf_desc); 1217 return status; 1218 } 1219 1220 /* verify the write -- must do this in order 1221 * for write to complete before we do the 1222 * hardware reset 1223 */ 1224 status = read_rom(serial, 1225 start_address, 1226 sizeof(*record), 1227 record); 1228 if (status) { 1229 kfree(record); 1230 kfree(firmware_version); 1231 kfree(rom_desc); 1232 kfree(ti_manuf_desc); 1233 return status; 1234 } 1235 1236 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1237 dev_err(dev, 1238 "%s - error resetting device\n", 1239 __func__); 1240 kfree(record); 1241 kfree(firmware_version); 1242 kfree(rom_desc); 1243 kfree(ti_manuf_desc); 1244 return -ENODEV; 1245 } 1246 1247 dbg("%s - HARDWARE RESET", __func__); 1248 1249 /* Reset UMP -- Back to BOOT MODE */ 1250 status = ti_vsend_sync(serial->serial->dev, 1251 UMPC_HARDWARE_RESET, 1252 0, 0, NULL, 0); 1253 1254 dbg("%s - HARDWARE RESET return %d", 1255 __func__, status); 1256 1257 /* return an error on purpose. */ 1258 kfree(record); 1259 kfree(firmware_version); 1260 kfree(rom_desc); 1261 kfree(ti_manuf_desc); 1262 return -ENODEV; 1263 } 1264 kfree(firmware_version); 1265 } 1266 /* Search for type 0xF2 record (firmware blank record) */ 1267 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1268#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1269 sizeof(struct ti_i2c_firmware_rec)) 1270 __u8 *header; 1271 __u8 *vheader; 1272 1273 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1274 if (!header) { 1275 dev_err(dev, "%s - out of memory.\n", __func__); 1276 kfree(rom_desc); 1277 kfree(ti_manuf_desc); 1278 return -ENOMEM; 1279 } 1280 1281 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1282 if (!vheader) { 1283 dev_err(dev, "%s - out of memory.\n", __func__); 1284 kfree(header); 1285 kfree(rom_desc); 1286 kfree(ti_manuf_desc); 1287 return -ENOMEM; 1288 } 1289 1290 dbg("%s - Found Type BLANK FIRMWARE (Type F2) record", 1291 __func__); 1292 1293 /* 1294 * In order to update the I2C firmware we must change 1295 * the type 2 record to type 0xF2. This will force the 1296 * UMP to come up in Boot Mode. Then while in boot 1297 * mode, the driver will download the latest firmware 1298 * (padded to 15.5k) into the UMP ram. Finally when the 1299 * device comes back up in download mode the driver 1300 * will cause the new firmware to be copied from the 1301 * UMP Ram to I2C and the firmware will update the 1302 * record type from 0xf2 to 0x02. 1303 */ 1304 status = build_i2c_fw_hdr(header, dev); 1305 if (status) { 1306 kfree(vheader); 1307 kfree(header); 1308 kfree(rom_desc); 1309 kfree(ti_manuf_desc); 1310 return status; 1311 } 1312 1313 /* Update I2C with type 0xf2 record with correct 1314 size and checksum */ 1315 status = write_rom(serial, 1316 start_address, 1317 HEADER_SIZE, 1318 header); 1319 if (status) { 1320 kfree(vheader); 1321 kfree(header); 1322 kfree(rom_desc); 1323 kfree(ti_manuf_desc); 1324 return status; 1325 } 1326 1327 /* verify the write -- must do this in order for 1328 write to complete before we do the hardware reset */ 1329 status = read_rom(serial, start_address, 1330 HEADER_SIZE, vheader); 1331 1332 if (status) { 1333 dbg("%s - can't read header back", __func__); 1334 kfree(vheader); 1335 kfree(header); 1336 kfree(rom_desc); 1337 kfree(ti_manuf_desc); 1338 return status; 1339 } 1340 if (memcmp(vheader, header, HEADER_SIZE)) { 1341 dbg("%s - write download record failed", 1342 __func__); 1343 kfree(vheader); 1344 kfree(header); 1345 kfree(rom_desc); 1346 kfree(ti_manuf_desc); 1347 return status; 1348 } 1349 1350 kfree(vheader); 1351 kfree(header); 1352 1353 dbg("%s - Start firmware update", __func__); 1354 1355 /* Tell firmware to copy download image into I2C */ 1356 status = ti_vsend_sync(serial->serial->dev, 1357 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1358 1359 dbg("%s - Update complete 0x%x", __func__, status); 1360 if (status) { 1361 dev_err(dev, 1362 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1363 __func__); 1364 kfree(rom_desc); 1365 kfree(ti_manuf_desc); 1366 return status; 1367 } 1368 } 1369 1370 // The device is running the download code 1371 kfree(rom_desc); 1372 kfree(ti_manuf_desc); 1373 return 0; 1374 } 1375 1376 /********************************************************************/ 1377 /* Boot Mode */ 1378 /********************************************************************/ 1379 dbg("%s - RUNNING IN BOOT MODE", __func__); 1380 1381 /* Configure the TI device so we can use the BULK pipes for download */ 1382 status = config_boot_dev(serial->serial->dev); 1383 if (status) 1384 return status; 1385 1386 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1387 != USB_VENDOR_ID_ION) { 1388 dbg("%s - VID = 0x%x", __func__, 1389 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1390 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1391 goto stayinbootmode; 1392 } 1393 1394 /* We have an ION device (I2c Must be programmed) 1395 Determine I2C image type */ 1396 if (i2c_type_bootmode(serial)) 1397 goto stayinbootmode; 1398 1399 /* Check for ION Vendor ID and that the I2C is valid */ 1400 if (!check_i2c_image(serial)) { 1401 struct ti_i2c_image_header *header; 1402 int i; 1403 __u8 cs = 0; 1404 __u8 *buffer; 1405 int buffer_size; 1406 int err; 1407 const struct firmware *fw; 1408 const char *fw_name = "edgeport/down3.bin"; 1409 1410 /* Validate Hardware version number 1411 * Read Manufacturing Descriptor from TI Based Edgeport 1412 */ 1413 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1414 if (!ti_manuf_desc) { 1415 dev_err(dev, "%s - out of memory.\n", __func__); 1416 return -ENOMEM; 1417 } 1418 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1419 if (status) { 1420 kfree(ti_manuf_desc); 1421 goto stayinbootmode; 1422 } 1423 1424 /* Check for version 2 */ 1425 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1426 dbg("%s - Wrong CPU Rev %d (Must be 2)", 1427 __func__, ti_cpu_rev(ti_manuf_desc)); 1428 kfree(ti_manuf_desc); 1429 goto stayinbootmode; 1430 } 1431 1432 kfree(ti_manuf_desc); 1433 1434 /* 1435 * In order to update the I2C firmware we must change the type 1436 * 2 record to type 0xF2. This will force the UMP to come up 1437 * in Boot Mode. Then while in boot mode, the driver will 1438 * download the latest firmware (padded to 15.5k) into the 1439 * UMP ram. Finally when the device comes back up in download 1440 * mode the driver will cause the new firmware to be copied 1441 * from the UMP Ram to I2C and the firmware will update the 1442 * record type from 0xf2 to 0x02. 1443 * 1444 * Do we really have to copy the whole firmware image, 1445 * or could we do this in place! 1446 */ 1447 1448 /* Allocate a 15.5k buffer + 3 byte header */ 1449 buffer_size = (((1024 * 16) - 512) + 1450 sizeof(struct ti_i2c_image_header)); 1451 buffer = kmalloc(buffer_size, GFP_KERNEL); 1452 if (!buffer) { 1453 dev_err(dev, "%s - out of memory\n", __func__); 1454 return -ENOMEM; 1455 } 1456 1457 /* Initialize the buffer to 0xff (pad the buffer) */ 1458 memset(buffer, 0xff, buffer_size); 1459 1460 err = request_firmware(&fw, fw_name, dev); 1461 if (err) { 1462 printk(KERN_ERR "Failed to load image \"%s\" err %d\n", 1463 fw_name, err); 1464 kfree(buffer); 1465 return err; 1466 } 1467 memcpy(buffer, &fw->data[4], fw->size - 4); 1468 release_firmware(fw); 1469 1470 for (i = sizeof(struct ti_i2c_image_header); 1471 i < buffer_size; i++) { 1472 cs = (__u8)(cs + buffer[i]); 1473 } 1474 1475 header = (struct ti_i2c_image_header *)buffer; 1476 1477 /* update length and checksum after padding */ 1478 header->Length = cpu_to_le16((__u16)(buffer_size - 1479 sizeof(struct ti_i2c_image_header))); 1480 header->CheckSum = cs; 1481 1482 /* Download the operational code */ 1483 dbg("%s - Downloading operational code image (TI UMP)", 1484 __func__); 1485 status = download_code(serial, buffer, buffer_size); 1486 1487 kfree(buffer); 1488 1489 if (status) { 1490 dbg("%s - Error downloading operational code image", 1491 __func__); 1492 return status; 1493 } 1494 1495 /* Device will reboot */ 1496 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1497 1498 dbg("%s - Download successful -- Device rebooting...", 1499 __func__); 1500 1501 /* return an error on purpose */ 1502 return -ENODEV; 1503 } 1504 1505stayinbootmode: 1506 /* Eprom is invalid or blank stay in boot mode */ 1507 dbg("%s - STAYING IN BOOT MODE", __func__); 1508 serial->product_info.TiMode = TI_MODE_BOOT; 1509 1510 return 0; 1511} 1512 1513 1514static int ti_do_config(struct edgeport_port *port, int feature, int on) 1515{ 1516 int port_number = port->port->number - port->port->serial->minor; 1517 on = !!on; /* 1 or 0 not bitmask */ 1518 return send_cmd(port->port->serial->dev, 1519 feature, (__u8)(UMPM_UART1_PORT + port_number), 1520 on, NULL, 0); 1521} 1522 1523 1524static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1525{ 1526 int status = 0; 1527 1528 dbg("%s - %x", __func__, mcr); 1529 1530 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1531 if (status) 1532 return status; 1533 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1534 if (status) 1535 return status; 1536 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1537} 1538 1539/* Convert TI LSR to standard UART flags */ 1540static __u8 map_line_status(__u8 ti_lsr) 1541{ 1542 __u8 lsr = 0; 1543 1544#define MAP_FLAG(flagUmp, flagUart) \ 1545 if (ti_lsr & flagUmp) \ 1546 lsr |= flagUart; 1547 1548 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1549 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1550 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1551 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1552 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1553 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1554 1555#undef MAP_FLAG 1556 1557 return lsr; 1558} 1559 1560static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1561{ 1562 struct async_icount *icount; 1563 struct tty_struct *tty; 1564 1565 dbg("%s - %02x", __func__, msr); 1566 1567 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1568 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1569 icount = &edge_port->icount; 1570 1571 /* update input line counters */ 1572 if (msr & EDGEPORT_MSR_DELTA_CTS) 1573 icount->cts++; 1574 if (msr & EDGEPORT_MSR_DELTA_DSR) 1575 icount->dsr++; 1576 if (msr & EDGEPORT_MSR_DELTA_CD) 1577 icount->dcd++; 1578 if (msr & EDGEPORT_MSR_DELTA_RI) 1579 icount->rng++; 1580 wake_up_interruptible(&edge_port->delta_msr_wait); 1581 } 1582 1583 /* Save the new modem status */ 1584 edge_port->shadow_msr = msr & 0xf0; 1585 1586 tty = tty_port_tty_get(&edge_port->port->port); 1587 /* handle CTS flow control */ 1588 if (tty && C_CRTSCTS(tty)) { 1589 if (msr & EDGEPORT_MSR_CTS) { 1590 tty->hw_stopped = 0; 1591 tty_wakeup(tty); 1592 } else { 1593 tty->hw_stopped = 1; 1594 } 1595 } 1596 tty_kref_put(tty); 1597 1598 return; 1599} 1600 1601static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1602 __u8 lsr, __u8 data) 1603{ 1604 struct async_icount *icount; 1605 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1606 LSR_FRM_ERR | LSR_BREAK)); 1607 struct tty_struct *tty; 1608 1609 dbg("%s - %02x", __func__, new_lsr); 1610 1611 edge_port->shadow_lsr = lsr; 1612 1613 if (new_lsr & LSR_BREAK) 1614 /* 1615 * Parity and Framing errors only count if they 1616 * occur exclusive of a break being received. 1617 */ 1618 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1619 1620 /* Place LSR data byte into Rx buffer */ 1621 if (lsr_data) { 1622 tty = tty_port_tty_get(&edge_port->port->port); 1623 if (tty) { 1624 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1625 tty_kref_put(tty); 1626 } 1627 } 1628 1629 /* update input line counters */ 1630 icount = &edge_port->icount; 1631 if (new_lsr & LSR_BREAK) 1632 icount->brk++; 1633 if (new_lsr & LSR_OVER_ERR) 1634 icount->overrun++; 1635 if (new_lsr & LSR_PAR_ERR) 1636 icount->parity++; 1637 if (new_lsr & LSR_FRM_ERR) 1638 icount->frame++; 1639} 1640 1641 1642static void edge_interrupt_callback(struct urb *urb) 1643{ 1644 struct edgeport_serial *edge_serial = urb->context; 1645 struct usb_serial_port *port; 1646 struct edgeport_port *edge_port; 1647 unsigned char *data = urb->transfer_buffer; 1648 int length = urb->actual_length; 1649 int port_number; 1650 int function; 1651 int retval; 1652 __u8 lsr; 1653 __u8 msr; 1654 int status = urb->status; 1655 1656 dbg("%s", __func__); 1657 1658 switch (status) { 1659 case 0: 1660 /* success */ 1661 break; 1662 case -ECONNRESET: 1663 case -ENOENT: 1664 case -ESHUTDOWN: 1665 /* this urb is terminated, clean up */ 1666 dbg("%s - urb shutting down with status: %d", 1667 __func__, status); 1668 return; 1669 default: 1670 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1671 "%d\n", __func__, status); 1672 goto exit; 1673 } 1674 1675 if (!length) { 1676 dbg("%s - no data in urb", __func__); 1677 goto exit; 1678 } 1679 1680 usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, 1681 __func__, length, data); 1682 1683 if (length != 2) { 1684 dbg("%s - expecting packet of size 2, got %d", 1685 __func__, length); 1686 goto exit; 1687 } 1688 1689 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1690 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1691 dbg("%s - port_number %d, function %d, info 0x%x", 1692 __func__, port_number, function, data[1]); 1693 port = edge_serial->serial->port[port_number]; 1694 edge_port = usb_get_serial_port_data(port); 1695 if (!edge_port) { 1696 dbg("%s - edge_port not found", __func__); 1697 return; 1698 } 1699 switch (function) { 1700 case TIUMP_INTERRUPT_CODE_LSR: 1701 lsr = map_line_status(data[1]); 1702 if (lsr & UMP_UART_LSR_DATA_MASK) { 1703 /* Save the LSR event for bulk read 1704 completion routine */ 1705 dbg("%s - LSR Event Port %u LSR Status = %02x", 1706 __func__, port_number, lsr); 1707 edge_port->lsr_event = 1; 1708 edge_port->lsr_mask = lsr; 1709 } else { 1710 dbg("%s - ===== Port %d LSR Status = %02x ======", 1711 __func__, port_number, lsr); 1712 handle_new_lsr(edge_port, 0, lsr, 0); 1713 } 1714 break; 1715 1716 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1717 /* Copy MSR from UMP */ 1718 msr = data[1]; 1719 dbg("%s - ===== Port %u MSR Status = %02x ======", 1720 __func__, port_number, msr); 1721 handle_new_msr(edge_port, msr); 1722 break; 1723 1724 default: 1725 dev_err(&urb->dev->dev, 1726 "%s - Unknown Interrupt code from UMP %x\n", 1727 __func__, data[1]); 1728 break; 1729 1730 } 1731 1732exit: 1733 retval = usb_submit_urb(urb, GFP_ATOMIC); 1734 if (retval) 1735 dev_err(&urb->dev->dev, 1736 "%s - usb_submit_urb failed with result %d\n", 1737 __func__, retval); 1738} 1739 1740static void edge_bulk_in_callback(struct urb *urb) 1741{ 1742 struct edgeport_port *edge_port = urb->context; 1743 unsigned char *data = urb->transfer_buffer; 1744 struct tty_struct *tty; 1745 int retval = 0; 1746 int port_number; 1747 int status = urb->status; 1748 1749 dbg("%s", __func__); 1750 1751 switch (status) { 1752 case 0: 1753 /* success */ 1754 break; 1755 case -ECONNRESET: 1756 case -ENOENT: 1757 case -ESHUTDOWN: 1758 /* this urb is terminated, clean up */ 1759 dbg("%s - urb shutting down with status: %d", 1760 __func__, status); 1761 return; 1762 default: 1763 dev_err(&urb->dev->dev, 1764 "%s - nonzero read bulk status received: %d\n", 1765 __func__, status); 1766 } 1767 1768 if (status == -EPIPE) 1769 goto exit; 1770 1771 if (status) { 1772 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1773 return; 1774 } 1775 1776 port_number = edge_port->port->number - edge_port->port->serial->minor; 1777 1778 if (edge_port->lsr_event) { 1779 edge_port->lsr_event = 0; 1780 dbg("%s ===== Port %u LSR Status = %02x, Data = %02x ======", 1781 __func__, port_number, edge_port->lsr_mask, *data); 1782 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1783 /* Adjust buffer length/pointer */ 1784 --urb->actual_length; 1785 ++data; 1786 } 1787 1788 tty = tty_port_tty_get(&edge_port->port->port); 1789 if (tty && urb->actual_length) { 1790 usb_serial_debug_data(debug, &edge_port->port->dev, 1791 __func__, urb->actual_length, data); 1792 if (edge_port->close_pending) 1793 dbg("%s - close pending, dropping data on the floor", 1794 __func__); 1795 else 1796 edge_tty_recv(&edge_port->port->dev, tty, data, 1797 urb->actual_length); 1798 edge_port->icount.rx += urb->actual_length; 1799 } 1800 tty_kref_put(tty); 1801 1802exit: 1803 /* continue read unless stopped */ 1804 spin_lock(&edge_port->ep_lock); 1805 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) { 1806 urb->dev = edge_port->port->serial->dev; 1807 retval = usb_submit_urb(urb, GFP_ATOMIC); 1808 } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) { 1809 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1810 } 1811 spin_unlock(&edge_port->ep_lock); 1812 if (retval) 1813 dev_err(&urb->dev->dev, 1814 "%s - usb_submit_urb failed with result %d\n", 1815 __func__, retval); 1816} 1817 1818static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1819 unsigned char *data, int length) 1820{ 1821 int queued; 1822 1823 tty_buffer_request_room(tty, length); 1824 queued = tty_insert_flip_string(tty, data, length); 1825 if (queued < length) 1826 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1827 __func__, length - queued); 1828 tty_flip_buffer_push(tty); 1829} 1830 1831static void edge_bulk_out_callback(struct urb *urb) 1832{ 1833 struct usb_serial_port *port = urb->context; 1834 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1835 int status = urb->status; 1836 struct tty_struct *tty; 1837 1838 dbg("%s - port %d", __func__, port->number); 1839 1840 edge_port->ep_write_urb_in_use = 0; 1841 1842 switch (status) { 1843 case 0: 1844 /* success */ 1845 break; 1846 case -ECONNRESET: 1847 case -ENOENT: 1848 case -ESHUTDOWN: 1849 /* this urb is terminated, clean up */ 1850 dbg("%s - urb shutting down with status: %d", 1851 __func__, status); 1852 return; 1853 default: 1854 dev_err(&urb->dev->dev, "%s - nonzero write bulk status " 1855 "received: %d\n", __func__, status); 1856 } 1857 1858 /* send any buffered data */ 1859 tty = tty_port_tty_get(&port->port); 1860 edge_send(tty); 1861 tty_kref_put(tty); 1862} 1863 1864static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1865{ 1866 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1867 struct edgeport_serial *edge_serial; 1868 struct usb_device *dev; 1869 struct urb *urb; 1870 int port_number; 1871 int status; 1872 u16 open_settings; 1873 u8 transaction_timeout; 1874 1875 dbg("%s - port %d", __func__, port->number); 1876 1877 if (edge_port == NULL) 1878 return -ENODEV; 1879 1880 port_number = port->number - port->serial->minor; 1881 switch (port_number) { 1882 case 0: 1883 edge_port->uart_base = UMPMEM_BASE_UART1; 1884 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1885 break; 1886 case 1: 1887 edge_port->uart_base = UMPMEM_BASE_UART2; 1888 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1889 break; 1890 default: 1891 dev_err(&port->dev, "Unknown port number!!!\n"); 1892 return -ENODEV; 1893 } 1894 1895 dbg("%s - port_number = %d, uart_base = %04x, dma_address = %04x", 1896 __func__, port_number, edge_port->uart_base, 1897 edge_port->dma_address); 1898 1899 dev = port->serial->dev; 1900 1901 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1902 init_waitqueue_head(&edge_port->delta_msr_wait); 1903 1904 /* turn off loopback */ 1905 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1906 if (status) { 1907 dev_err(&port->dev, 1908 "%s - cannot send clear loopback command, %d\n", 1909 __func__, status); 1910 return status; 1911 } 1912 1913 /* set up the port settings */ 1914 if (tty) 1915 edge_set_termios(tty, port, tty->termios); 1916 1917 /* open up the port */ 1918 1919 /* milliseconds to timeout for DMA transfer */ 1920 transaction_timeout = 2; 1921 1922 edge_port->ump_read_timeout = 1923 max(20, ((transaction_timeout * 3) / 2)); 1924 1925 /* milliseconds to timeout for DMA transfer */ 1926 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1927 UMP_PIPE_TRANS_TIMEOUT_ENA | 1928 (transaction_timeout << 2)); 1929 1930 dbg("%s - Sending UMPC_OPEN_PORT", __func__); 1931 1932 /* Tell TI to open and start the port */ 1933 status = send_cmd(dev, UMPC_OPEN_PORT, 1934 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1935 if (status) { 1936 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1937 __func__, status); 1938 return status; 1939 } 1940 1941 /* Start the DMA? */ 1942 status = send_cmd(dev, UMPC_START_PORT, 1943 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1944 if (status) { 1945 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1946 __func__, status); 1947 return status; 1948 } 1949 1950 /* Clear TX and RX buffers in UMP */ 1951 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1952 if (status) { 1953 dev_err(&port->dev, 1954 "%s - cannot send clear buffers command, %d\n", 1955 __func__, status); 1956 return status; 1957 } 1958 1959 /* Read Initial MSR */ 1960 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1961 (__u16)(UMPM_UART1_PORT + port_number), 1962 &edge_port->shadow_msr, 1); 1963 if (status) { 1964 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1965 __func__, status); 1966 return status; 1967 } 1968 1969 dbg("ShadowMSR 0x%X", edge_port->shadow_msr); 1970 1971 /* Set Initial MCR */ 1972 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1973 dbg("ShadowMCR 0x%X", edge_port->shadow_mcr); 1974 1975 edge_serial = edge_port->edge_serial; 1976 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1977 return -ERESTARTSYS; 1978 if (edge_serial->num_ports_open == 0) { 1979 /* we are the first port to open, post the interrupt urb */ 1980 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1981 if (!urb) { 1982 dev_err(&port->dev, 1983 "%s - no interrupt urb present, exiting\n", 1984 __func__); 1985 status = -EINVAL; 1986 goto release_es_lock; 1987 } 1988 urb->complete = edge_interrupt_callback; 1989 urb->context = edge_serial; 1990 urb->dev = dev; 1991 status = usb_submit_urb(urb, GFP_KERNEL); 1992 if (status) { 1993 dev_err(&port->dev, 1994 "%s - usb_submit_urb failed with value %d\n", 1995 __func__, status); 1996 goto release_es_lock; 1997 } 1998 } 1999 2000 /* 2001 * reset the data toggle on the bulk endpoints to work around bug in 2002 * host controllers where things get out of sync some times 2003 */ 2004 usb_clear_halt(dev, port->write_urb->pipe); 2005 usb_clear_halt(dev, port->read_urb->pipe); 2006 2007 /* start up our bulk read urb */ 2008 urb = port->read_urb; 2009 if (!urb) { 2010 dev_err(&port->dev, "%s - no read urb present, exiting\n", 2011 __func__); 2012 status = -EINVAL; 2013 goto unlink_int_urb; 2014 } 2015 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2016 urb->complete = edge_bulk_in_callback; 2017 urb->context = edge_port; 2018 urb->dev = dev; 2019 status = usb_submit_urb(urb, GFP_KERNEL); 2020 if (status) { 2021 dev_err(&port->dev, 2022 "%s - read bulk usb_submit_urb failed with value %d\n", 2023 __func__, status); 2024 goto unlink_int_urb; 2025 } 2026 2027 ++edge_serial->num_ports_open; 2028 2029 dbg("%s - exited", __func__); 2030 2031 goto release_es_lock; 2032 2033unlink_int_urb: 2034 if (edge_port->edge_serial->num_ports_open == 0) 2035 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2036release_es_lock: 2037 mutex_unlock(&edge_serial->es_lock); 2038 return status; 2039} 2040 2041static void edge_close(struct usb_serial_port *port) 2042{ 2043 struct edgeport_serial *edge_serial; 2044 struct edgeport_port *edge_port; 2045 int port_number; 2046 int status; 2047 2048 dbg("%s - port %d", __func__, port->number); 2049 2050 edge_serial = usb_get_serial_data(port->serial); 2051 edge_port = usb_get_serial_port_data(port); 2052 if (edge_serial == NULL || edge_port == NULL) 2053 return; 2054 2055 /* The bulkreadcompletion routine will check 2056 * this flag and dump add read data */ 2057 edge_port->close_pending = 1; 2058 2059 /* chase the port close and flush */ 2060 chase_port(edge_port, (HZ * closing_wait) / 100, 1); 2061 2062 usb_kill_urb(port->read_urb); 2063 usb_kill_urb(port->write_urb); 2064 edge_port->ep_write_urb_in_use = 0; 2065 2066 /* assuming we can still talk to the device, 2067 * send a close port command to it */ 2068 dbg("%s - send umpc_close_port", __func__); 2069 port_number = port->number - port->serial->minor; 2070 status = send_cmd(port->serial->dev, 2071 UMPC_CLOSE_PORT, 2072 (__u8)(UMPM_UART1_PORT + port_number), 2073 0, 2074 NULL, 2075 0); 2076 mutex_lock(&edge_serial->es_lock); 2077 --edge_port->edge_serial->num_ports_open; 2078 if (edge_port->edge_serial->num_ports_open <= 0) { 2079 /* last port is now closed, let's shut down our interrupt urb */ 2080 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 2081 edge_port->edge_serial->num_ports_open = 0; 2082 } 2083 mutex_unlock(&edge_serial->es_lock); 2084 edge_port->close_pending = 0; 2085 2086 dbg("%s - exited", __func__); 2087} 2088 2089static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2090 const unsigned char *data, int count) 2091{ 2092 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2093 unsigned long flags; 2094 2095 dbg("%s - port %d", __func__, port->number); 2096 2097 if (count == 0) { 2098 dbg("%s - write request of 0 bytes", __func__); 2099 return 0; 2100 } 2101 2102 if (edge_port == NULL) 2103 return -ENODEV; 2104 if (edge_port->close_pending == 1) 2105 return -ENODEV; 2106 2107 spin_lock_irqsave(&edge_port->ep_lock, flags); 2108 count = edge_buf_put(edge_port->ep_out_buf, data, count); 2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2110 2111 edge_send(tty); 2112 2113 return count; 2114} 2115 2116static void edge_send(struct tty_struct *tty) 2117{ 2118 struct usb_serial_port *port = tty->driver_data; 2119 int count, result; 2120 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2121 unsigned long flags; 2122 2123 2124 dbg("%s - port %d", __func__, port->number); 2125 2126 spin_lock_irqsave(&edge_port->ep_lock, flags); 2127 2128 if (edge_port->ep_write_urb_in_use) { 2129 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2130 return; 2131 } 2132 2133 count = edge_buf_get(edge_port->ep_out_buf, 2134 port->write_urb->transfer_buffer, 2135 port->bulk_out_size); 2136 2137 if (count == 0) { 2138 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2139 return; 2140 } 2141 2142 edge_port->ep_write_urb_in_use = 1; 2143 2144 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2145 2146 usb_serial_debug_data(debug, &port->dev, __func__, count, 2147 port->write_urb->transfer_buffer); 2148 2149 /* set up our urb */ 2150 usb_fill_bulk_urb(port->write_urb, port->serial->dev, 2151 usb_sndbulkpipe(port->serial->dev, 2152 port->bulk_out_endpointAddress), 2153 port->write_urb->transfer_buffer, count, 2154 edge_bulk_out_callback, 2155 port); 2156 2157 /* send the data out the bulk port */ 2158 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2159 if (result) { 2160 dev_err(&port->dev, 2161 "%s - failed submitting write urb, error %d\n", 2162 __func__, result); 2163 edge_port->ep_write_urb_in_use = 0; 2164 /* TODO: reschedule edge_send */ 2165 } else 2166 edge_port->icount.tx += count; 2167 2168 /* wakeup any process waiting for writes to complete */ 2169 /* there is now more room in the buffer for new writes */ 2170 if (tty) 2171 tty_wakeup(tty); 2172} 2173 2174static int edge_write_room(struct tty_struct *tty) 2175{ 2176 struct usb_serial_port *port = tty->driver_data; 2177 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2178 int room = 0; 2179 unsigned long flags; 2180 2181 dbg("%s - port %d", __func__, port->number); 2182 2183 if (edge_port == NULL) 2184 return 0; 2185 if (edge_port->close_pending == 1) 2186 return 0; 2187 2188 spin_lock_irqsave(&edge_port->ep_lock, flags); 2189 room = edge_buf_space_avail(edge_port->ep_out_buf); 2190 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2191 2192 dbg("%s - returns %d", __func__, room); 2193 return room; 2194} 2195 2196static int edge_chars_in_buffer(struct tty_struct *tty) 2197{ 2198 struct usb_serial_port *port = tty->driver_data; 2199 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2200 int chars = 0; 2201 unsigned long flags; 2202 2203 dbg("%s - port %d", __func__, port->number); 2204 2205 if (edge_port == NULL) 2206 return 0; 2207 if (edge_port->close_pending == 1) 2208 return 0; 2209 2210 spin_lock_irqsave(&edge_port->ep_lock, flags); 2211 chars = edge_buf_data_avail(edge_port->ep_out_buf); 2212 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2213 2214 dbg("%s - returns %d", __func__, chars); 2215 return chars; 2216} 2217 2218static void edge_throttle(struct tty_struct *tty) 2219{ 2220 struct usb_serial_port *port = tty->driver_data; 2221 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2222 int status; 2223 2224 dbg("%s - port %d", __func__, port->number); 2225 2226 if (edge_port == NULL) 2227 return; 2228 2229 /* if we are implementing XON/XOFF, send the stop character */ 2230 if (I_IXOFF(tty)) { 2231 unsigned char stop_char = STOP_CHAR(tty); 2232 status = edge_write(tty, port, &stop_char, 1); 2233 if (status <= 0) { 2234 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2235 } 2236 } 2237 2238 /* if we are implementing RTS/CTS, stop reads */ 2239 /* and the Edgeport will clear the RTS line */ 2240 if (C_CRTSCTS(tty)) 2241 stop_read(edge_port); 2242 2243} 2244 2245static void edge_unthrottle(struct tty_struct *tty) 2246{ 2247 struct usb_serial_port *port = tty->driver_data; 2248 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2249 int status; 2250 2251 dbg("%s - port %d", __func__, port->number); 2252 2253 if (edge_port == NULL) 2254 return; 2255 2256 /* if we are implementing XON/XOFF, send the start character */ 2257 if (I_IXOFF(tty)) { 2258 unsigned char start_char = START_CHAR(tty); 2259 status = edge_write(tty, port, &start_char, 1); 2260 if (status <= 0) { 2261 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2262 } 2263 } 2264 /* if we are implementing RTS/CTS, restart reads */ 2265 /* are the Edgeport will assert the RTS line */ 2266 if (C_CRTSCTS(tty)) { 2267 status = restart_read(edge_port); 2268 if (status) 2269 dev_err(&port->dev, 2270 "%s - read bulk usb_submit_urb failed: %d\n", 2271 __func__, status); 2272 } 2273 2274} 2275 2276static void stop_read(struct edgeport_port *edge_port) 2277{ 2278 unsigned long flags; 2279 2280 spin_lock_irqsave(&edge_port->ep_lock, flags); 2281 2282 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2283 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2284 edge_port->shadow_mcr &= ~MCR_RTS; 2285 2286 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2287} 2288 2289static int restart_read(struct edgeport_port *edge_port) 2290{ 2291 struct urb *urb; 2292 int status = 0; 2293 unsigned long flags; 2294 2295 spin_lock_irqsave(&edge_port->ep_lock, flags); 2296 2297 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2298 urb = edge_port->port->read_urb; 2299 urb->complete = edge_bulk_in_callback; 2300 urb->context = edge_port; 2301 urb->dev = edge_port->port->serial->dev; 2302 status = usb_submit_urb(urb, GFP_ATOMIC); 2303 } 2304 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2305 edge_port->shadow_mcr |= MCR_RTS; 2306 2307 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2308 2309 return status; 2310} 2311 2312static void change_port_settings(struct tty_struct *tty, 2313 struct edgeport_port *edge_port, struct ktermios *old_termios) 2314{ 2315 struct ump_uart_config *config; 2316 int baud; 2317 unsigned cflag; 2318 int status; 2319 int port_number = edge_port->port->number - 2320 edge_port->port->serial->minor; 2321 2322 dbg("%s - port %d", __func__, edge_port->port->number); 2323 2324 config = kmalloc (sizeof (*config), GFP_KERNEL); 2325 if (!config) { 2326 *tty->termios = *old_termios; 2327 dev_err(&edge_port->port->dev, "%s - out of memory\n", 2328 __func__); 2329 return; 2330 } 2331 2332 cflag = tty->termios->c_cflag; 2333 2334 config->wFlags = 0; 2335 2336 /* These flags must be set */ 2337 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2338 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2339 config->bUartMode = (__u8)(edge_port->bUartMode); 2340 2341 switch (cflag & CSIZE) { 2342 case CS5: 2343 config->bDataBits = UMP_UART_CHAR5BITS; 2344 dbg("%s - data bits = 5", __func__); 2345 break; 2346 case CS6: 2347 config->bDataBits = UMP_UART_CHAR6BITS; 2348 dbg("%s - data bits = 6", __func__); 2349 break; 2350 case CS7: 2351 config->bDataBits = UMP_UART_CHAR7BITS; 2352 dbg("%s - data bits = 7", __func__); 2353 break; 2354 default: 2355 case CS8: 2356 config->bDataBits = UMP_UART_CHAR8BITS; 2357 dbg("%s - data bits = 8", __func__); 2358 break; 2359 } 2360 2361 if (cflag & PARENB) { 2362 if (cflag & PARODD) { 2363 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2364 config->bParity = UMP_UART_ODDPARITY; 2365 dbg("%s - parity = odd", __func__); 2366 } else { 2367 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2368 config->bParity = UMP_UART_EVENPARITY; 2369 dbg("%s - parity = even", __func__); 2370 } 2371 } else { 2372 config->bParity = UMP_UART_NOPARITY; 2373 dbg("%s - parity = none", __func__); 2374 } 2375 2376 if (cflag & CSTOPB) { 2377 config->bStopBits = UMP_UART_STOPBIT2; 2378 dbg("%s - stop bits = 2", __func__); 2379 } else { 2380 config->bStopBits = UMP_UART_STOPBIT1; 2381 dbg("%s - stop bits = 1", __func__); 2382 } 2383 2384 /* figure out the flow control settings */ 2385 if (cflag & CRTSCTS) { 2386 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2387 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2388 dbg("%s - RTS/CTS is enabled", __func__); 2389 } else { 2390 dbg("%s - RTS/CTS is disabled", __func__); 2391 tty->hw_stopped = 0; 2392 restart_read(edge_port); 2393 } 2394 2395 /* if we are implementing XON/XOFF, set the start and stop 2396 character in the device */ 2397 config->cXon = START_CHAR(tty); 2398 config->cXoff = STOP_CHAR(tty); 2399 2400 /* if we are implementing INBOUND XON/XOFF */ 2401 if (I_IXOFF(tty)) { 2402 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2403 dbg("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2404 __func__, config->cXon, config->cXoff); 2405 } else 2406 dbg("%s - INBOUND XON/XOFF is disabled", __func__); 2407 2408 /* if we are implementing OUTBOUND XON/XOFF */ 2409 if (I_IXON(tty)) { 2410 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2411 dbg("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x", 2412 __func__, config->cXon, config->cXoff); 2413 } else 2414 dbg("%s - OUTBOUND XON/XOFF is disabled", __func__); 2415 2416 tty->termios->c_cflag &= ~CMSPAR; 2417 2418 /* Round the baud rate */ 2419 baud = tty_get_baud_rate(tty); 2420 if (!baud) { 2421 /* pick a default, any default... */ 2422 baud = 9600; 2423 } else 2424 tty_encode_baud_rate(tty, baud, baud); 2425 2426 edge_port->baud_rate = baud; 2427 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2428 2429 /* FIXME: Recompute actual baud from divisor here */ 2430 2431 dbg("%s - baud rate = %d, wBaudRate = %d", __func__, baud, 2432 config->wBaudRate); 2433 2434 dbg("wBaudRate: %d", (int)(461550L / config->wBaudRate)); 2435 dbg("wFlags: 0x%x", config->wFlags); 2436 dbg("bDataBits: %d", config->bDataBits); 2437 dbg("bParity: %d", config->bParity); 2438 dbg("bStopBits: %d", config->bStopBits); 2439 dbg("cXon: %d", config->cXon); 2440 dbg("cXoff: %d", config->cXoff); 2441 dbg("bUartMode: %d", config->bUartMode); 2442 2443 /* move the word values into big endian mode */ 2444 cpu_to_be16s(&config->wFlags); 2445 cpu_to_be16s(&config->wBaudRate); 2446 2447 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2448 (__u8)(UMPM_UART1_PORT + port_number), 2449 0, (__u8 *)config, sizeof(*config)); 2450 if (status) 2451 dbg("%s - error %d when trying to write config to device", 2452 __func__, status); 2453 kfree(config); 2454 return; 2455} 2456 2457static void edge_set_termios(struct tty_struct *tty, 2458 struct usb_serial_port *port, struct ktermios *old_termios) 2459{ 2460 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2461 unsigned int cflag; 2462 2463 cflag = tty->termios->c_cflag; 2464 2465 dbg("%s - clfag %08x iflag %08x", __func__, 2466 tty->termios->c_cflag, tty->termios->c_iflag); 2467 dbg("%s - old clfag %08x old iflag %08x", __func__, 2468 old_termios->c_cflag, old_termios->c_iflag); 2469 dbg("%s - port %d", __func__, port->number); 2470 2471 if (edge_port == NULL) 2472 return; 2473 /* change the port settings to the new ones specified */ 2474 change_port_settings(tty, edge_port, old_termios); 2475 return; 2476} 2477 2478static int edge_tiocmset(struct tty_struct *tty, struct file *file, 2479 unsigned int set, unsigned int clear) 2480{ 2481 struct usb_serial_port *port = tty->driver_data; 2482 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2483 unsigned int mcr; 2484 unsigned long flags; 2485 2486 dbg("%s - port %d", __func__, port->number); 2487 2488 spin_lock_irqsave(&edge_port->ep_lock, flags); 2489 mcr = edge_port->shadow_mcr; 2490 if (set & TIOCM_RTS) 2491 mcr |= MCR_RTS; 2492 if (set & TIOCM_DTR) 2493 mcr |= MCR_DTR; 2494 if (set & TIOCM_LOOP) 2495 mcr |= MCR_LOOPBACK; 2496 2497 if (clear & TIOCM_RTS) 2498 mcr &= ~MCR_RTS; 2499 if (clear & TIOCM_DTR) 2500 mcr &= ~MCR_DTR; 2501 if (clear & TIOCM_LOOP) 2502 mcr &= ~MCR_LOOPBACK; 2503 2504 edge_port->shadow_mcr = mcr; 2505 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2506 2507 restore_mcr(edge_port, mcr); 2508 return 0; 2509} 2510 2511static int edge_tiocmget(struct tty_struct *tty, struct file *file) 2512{ 2513 struct usb_serial_port *port = tty->driver_data; 2514 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2515 unsigned int result = 0; 2516 unsigned int msr; 2517 unsigned int mcr; 2518 unsigned long flags; 2519 2520 dbg("%s - port %d", __func__, port->number); 2521 2522 spin_lock_irqsave(&edge_port->ep_lock, flags); 2523 2524 msr = edge_port->shadow_msr; 2525 mcr = edge_port->shadow_mcr; 2526 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2527 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2528 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2529 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2530 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2531 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2532 2533 2534 dbg("%s -- %x", __func__, result); 2535 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2536 2537 return result; 2538} 2539 2540static int get_serial_info(struct edgeport_port *edge_port, 2541 struct serial_struct __user *retinfo) 2542{ 2543 struct serial_struct tmp; 2544 2545 if (!retinfo) 2546 return -EFAULT; 2547 2548 memset(&tmp, 0, sizeof(tmp)); 2549 2550 tmp.type = PORT_16550A; 2551 tmp.line = edge_port->port->serial->minor; 2552 tmp.port = edge_port->port->number; 2553 tmp.irq = 0; 2554 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2555 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2556 tmp.baud_base = 9600; 2557 tmp.close_delay = 5*HZ; 2558 tmp.closing_wait = closing_wait; 2559 2560 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2561 return -EFAULT; 2562 return 0; 2563} 2564 2565static int edge_ioctl(struct tty_struct *tty, struct file *file, 2566 unsigned int cmd, unsigned long arg) 2567{ 2568 struct usb_serial_port *port = tty->driver_data; 2569 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2570 struct async_icount cnow; 2571 struct async_icount cprev; 2572 2573 dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); 2574 2575 switch (cmd) { 2576 case TIOCGSERIAL: 2577 dbg("%s - (%d) TIOCGSERIAL", __func__, port->number); 2578 return get_serial_info(edge_port, 2579 (struct serial_struct __user *) arg); 2580 case TIOCMIWAIT: 2581 dbg("%s - (%d) TIOCMIWAIT", __func__, port->number); 2582 cprev = edge_port->icount; 2583 while (1) { 2584 interruptible_sleep_on(&edge_port->delta_msr_wait); 2585 /* see if a signal did it */ 2586 if (signal_pending(current)) 2587 return -ERESTARTSYS; 2588 cnow = edge_port->icount; 2589 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2590 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2591 return -EIO; /* no change => error */ 2592 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2593 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2594 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2595 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2596 return 0; 2597 } 2598 cprev = cnow; 2599 } 2600 /* not reached */ 2601 break; 2602 case TIOCGICOUNT: 2603 dbg("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, 2604 port->number, edge_port->icount.rx, edge_port->icount.tx); 2605 if (copy_to_user((void __user *)arg, &edge_port->icount, 2606 sizeof(edge_port->icount))) 2607 return -EFAULT; 2608 return 0; 2609 } 2610 return -ENOIOCTLCMD; 2611} 2612 2613static void edge_break(struct tty_struct *tty, int break_state) 2614{ 2615 struct usb_serial_port *port = tty->driver_data; 2616 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2617 int status; 2618 int bv = 0; /* Off */ 2619 2620 dbg("%s - state = %d", __func__, break_state); 2621 2622 /* chase the port close */ 2623 chase_port(edge_port, 0, 0); 2624 2625 if (break_state == -1) 2626 bv = 1; /* On */ 2627 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2628 if (status) 2629 dbg("%s - error %d sending break set/clear command.", 2630 __func__, status); 2631} 2632 2633static int edge_startup(struct usb_serial *serial) 2634{ 2635 struct edgeport_serial *edge_serial; 2636 struct edgeport_port *edge_port; 2637 struct usb_device *dev; 2638 int status; 2639 int i; 2640 2641 dev = serial->dev; 2642 2643 /* create our private serial structure */ 2644 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2645 if (edge_serial == NULL) { 2646 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2647 return -ENOMEM; 2648 } 2649 mutex_init(&edge_serial->es_lock); 2650 edge_serial->serial = serial; 2651 usb_set_serial_data(serial, edge_serial); 2652 2653 status = download_fw(edge_serial); 2654 if (status) { 2655 kfree(edge_serial); 2656 return status; 2657 } 2658 2659 /* set up our port private structures */ 2660 for (i = 0; i < serial->num_ports; ++i) { 2661 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL); 2662 if (edge_port == NULL) { 2663 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2664 __func__); 2665 goto cleanup; 2666 } 2667 spin_lock_init(&edge_port->ep_lock); 2668 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE); 2669 if (edge_port->ep_out_buf == NULL) { 2670 dev_err(&serial->dev->dev, "%s - Out of memory\n", 2671 __func__); 2672 kfree(edge_port); 2673 goto cleanup; 2674 } 2675 edge_port->port = serial->port[i]; 2676 edge_port->edge_serial = edge_serial; 2677 usb_set_serial_port_data(serial->port[i], edge_port); 2678 edge_port->bUartMode = default_uart_mode; 2679 } 2680 2681 return 0; 2682 2683cleanup: 2684 for (--i; i >= 0; --i) { 2685 edge_port = usb_get_serial_port_data(serial->port[i]); 2686 edge_buf_free(edge_port->ep_out_buf); 2687 kfree(edge_port); 2688 usb_set_serial_port_data(serial->port[i], NULL); 2689 } 2690 kfree(edge_serial); 2691 usb_set_serial_data(serial, NULL); 2692 return -ENOMEM; 2693} 2694 2695static void edge_disconnect(struct usb_serial *serial) 2696{ 2697 int i; 2698 struct edgeport_port *edge_port; 2699 2700 dbg("%s", __func__); 2701 2702 for (i = 0; i < serial->num_ports; ++i) { 2703 edge_port = usb_get_serial_port_data(serial->port[i]); 2704 edge_remove_sysfs_attrs(edge_port->port); 2705 } 2706} 2707 2708static void edge_release(struct usb_serial *serial) 2709{ 2710 int i; 2711 struct edgeport_port *edge_port; 2712 2713 dbg("%s", __func__); 2714 2715 for (i = 0; i < serial->num_ports; ++i) { 2716 edge_port = usb_get_serial_port_data(serial->port[i]); 2717 edge_buf_free(edge_port->ep_out_buf); 2718 kfree(edge_port); 2719 } 2720 kfree(usb_get_serial_data(serial)); 2721} 2722 2723 2724/* Sysfs Attributes */ 2725 2726static ssize_t show_uart_mode(struct device *dev, 2727 struct device_attribute *attr, char *buf) 2728{ 2729 struct usb_serial_port *port = to_usb_serial_port(dev); 2730 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2731 2732 return sprintf(buf, "%d\n", edge_port->bUartMode); 2733} 2734 2735static ssize_t store_uart_mode(struct device *dev, 2736 struct device_attribute *attr, const char *valbuf, size_t count) 2737{ 2738 struct usb_serial_port *port = to_usb_serial_port(dev); 2739 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2740 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2741 2742 dbg("%s: setting uart_mode = %d", __func__, v); 2743 2744 if (v < 256) 2745 edge_port->bUartMode = v; 2746 else 2747 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2748 2749 return count; 2750} 2751 2752static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2753 store_uart_mode); 2754 2755static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2756{ 2757 return device_create_file(&port->dev, &dev_attr_uart_mode); 2758} 2759 2760static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2761{ 2762 device_remove_file(&port->dev, &dev_attr_uart_mode); 2763 return 0; 2764} 2765 2766 2767/* Circular Buffer */ 2768 2769/* 2770 * edge_buf_alloc 2771 * 2772 * Allocate a circular buffer and all associated memory. 2773 */ 2774 2775static struct edge_buf *edge_buf_alloc(unsigned int size) 2776{ 2777 struct edge_buf *eb; 2778 2779 2780 if (size == 0) 2781 return NULL; 2782 2783 eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL); 2784 if (eb == NULL) 2785 return NULL; 2786 2787 eb->buf_buf = kmalloc(size, GFP_KERNEL); 2788 if (eb->buf_buf == NULL) { 2789 kfree(eb); 2790 return NULL; 2791 } 2792 2793 eb->buf_size = size; 2794 eb->buf_get = eb->buf_put = eb->buf_buf; 2795 2796 return eb; 2797} 2798 2799 2800/* 2801 * edge_buf_free 2802 * 2803 * Free the buffer and all associated memory. 2804 */ 2805 2806static void edge_buf_free(struct edge_buf *eb) 2807{ 2808 if (eb) { 2809 kfree(eb->buf_buf); 2810 kfree(eb); 2811 } 2812} 2813 2814 2815/* 2816 * edge_buf_clear 2817 * 2818 * Clear out all data in the circular buffer. 2819 */ 2820 2821static void edge_buf_clear(struct edge_buf *eb) 2822{ 2823 if (eb != NULL) 2824 eb->buf_get = eb->buf_put; 2825 /* equivalent to a get of all data available */ 2826} 2827 2828 2829/* 2830 * edge_buf_data_avail 2831 * 2832 * Return the number of bytes of data available in the circular 2833 * buffer. 2834 */ 2835 2836static unsigned int edge_buf_data_avail(struct edge_buf *eb) 2837{ 2838 if (eb == NULL) 2839 return 0; 2840 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size); 2841} 2842 2843 2844/* 2845 * edge_buf_space_avail 2846 * 2847 * Return the number of bytes of space available in the circular 2848 * buffer. 2849 */ 2850 2851static unsigned int edge_buf_space_avail(struct edge_buf *eb) 2852{ 2853 if (eb == NULL) 2854 return 0; 2855 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size); 2856} 2857 2858 2859/* 2860 * edge_buf_put 2861 * 2862 * Copy data data from a user buffer and put it into the circular buffer. 2863 * Restrict to the amount of space available. 2864 * 2865 * Return the number of bytes copied. 2866 */ 2867 2868static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf, 2869 unsigned int count) 2870{ 2871 unsigned int len; 2872 2873 2874 if (eb == NULL) 2875 return 0; 2876 2877 len = edge_buf_space_avail(eb); 2878 if (count > len) 2879 count = len; 2880 2881 if (count == 0) 2882 return 0; 2883 2884 len = eb->buf_buf + eb->buf_size - eb->buf_put; 2885 if (count > len) { 2886 memcpy(eb->buf_put, buf, len); 2887 memcpy(eb->buf_buf, buf+len, count - len); 2888 eb->buf_put = eb->buf_buf + count - len; 2889 } else { 2890 memcpy(eb->buf_put, buf, count); 2891 if (count < len) 2892 eb->buf_put += count; 2893 else /* count == len */ 2894 eb->buf_put = eb->buf_buf; 2895 } 2896 2897 return count; 2898} 2899 2900 2901/* 2902 * edge_buf_get 2903 * 2904 * Get data from the circular buffer and copy to the given buffer. 2905 * Restrict to the amount of data available. 2906 * 2907 * Return the number of bytes copied. 2908 */ 2909 2910static unsigned int edge_buf_get(struct edge_buf *eb, char *buf, 2911 unsigned int count) 2912{ 2913 unsigned int len; 2914 2915 2916 if (eb == NULL) 2917 return 0; 2918 2919 len = edge_buf_data_avail(eb); 2920 if (count > len) 2921 count = len; 2922 2923 if (count == 0) 2924 return 0; 2925 2926 len = eb->buf_buf + eb->buf_size - eb->buf_get; 2927 if (count > len) { 2928 memcpy(buf, eb->buf_get, len); 2929 memcpy(buf+len, eb->buf_buf, count - len); 2930 eb->buf_get = eb->buf_buf + count - len; 2931 } else { 2932 memcpy(buf, eb->buf_get, count); 2933 if (count < len) 2934 eb->buf_get += count; 2935 else /* count == len */ 2936 eb->buf_get = eb->buf_buf; 2937 } 2938 2939 return count; 2940} 2941 2942 2943static struct usb_serial_driver edgeport_1port_device = { 2944 .driver = { 2945 .owner = THIS_MODULE, 2946 .name = "edgeport_ti_1", 2947 }, 2948 .description = "Edgeport TI 1 port adapter", 2949 .usb_driver = &io_driver, 2950 .id_table = edgeport_1port_id_table, 2951 .num_ports = 1, 2952 .open = edge_open, 2953 .close = edge_close, 2954 .throttle = edge_throttle, 2955 .unthrottle = edge_unthrottle, 2956 .attach = edge_startup, 2957 .disconnect = edge_disconnect, 2958 .release = edge_release, 2959 .port_probe = edge_create_sysfs_attrs, 2960 .ioctl = edge_ioctl, 2961 .set_termios = edge_set_termios, 2962 .tiocmget = edge_tiocmget, 2963 .tiocmset = edge_tiocmset, 2964 .write = edge_write, 2965 .write_room = edge_write_room, 2966 .chars_in_buffer = edge_chars_in_buffer, 2967 .break_ctl = edge_break, 2968 .read_int_callback = edge_interrupt_callback, 2969 .read_bulk_callback = edge_bulk_in_callback, 2970 .write_bulk_callback = edge_bulk_out_callback, 2971}; 2972 2973static struct usb_serial_driver edgeport_2port_device = { 2974 .driver = { 2975 .owner = THIS_MODULE, 2976 .name = "edgeport_ti_2", 2977 }, 2978 .description = "Edgeport TI 2 port adapter", 2979 .usb_driver = &io_driver, 2980 .id_table = edgeport_2port_id_table, 2981 .num_ports = 2, 2982 .open = edge_open, 2983 .close = edge_close, 2984 .throttle = edge_throttle, 2985 .unthrottle = edge_unthrottle, 2986 .attach = edge_startup, 2987 .disconnect = edge_disconnect, 2988 .release = edge_release, 2989 .port_probe = edge_create_sysfs_attrs, 2990 .ioctl = edge_ioctl, 2991 .set_termios = edge_set_termios, 2992 .tiocmget = edge_tiocmget, 2993 .tiocmset = edge_tiocmset, 2994 .write = edge_write, 2995 .write_room = edge_write_room, 2996 .chars_in_buffer = edge_chars_in_buffer, 2997 .break_ctl = edge_break, 2998 .read_int_callback = edge_interrupt_callback, 2999 .read_bulk_callback = edge_bulk_in_callback, 3000 .write_bulk_callback = edge_bulk_out_callback, 3001}; 3002 3003 3004static int __init edgeport_init(void) 3005{ 3006 int retval; 3007 retval = usb_serial_register(&edgeport_1port_device); 3008 if (retval) 3009 goto failed_1port_device_register; 3010 retval = usb_serial_register(&edgeport_2port_device); 3011 if (retval) 3012 goto failed_2port_device_register; 3013 retval = usb_register(&io_driver); 3014 if (retval) 3015 goto failed_usb_register; 3016 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" 3017 DRIVER_DESC "\n"); 3018 return 0; 3019failed_usb_register: 3020 usb_serial_deregister(&edgeport_2port_device); 3021failed_2port_device_register: 3022 usb_serial_deregister(&edgeport_1port_device); 3023failed_1port_device_register: 3024 return retval; 3025} 3026 3027static void __exit edgeport_exit(void) 3028{ 3029 usb_deregister(&io_driver); 3030 usb_serial_deregister(&edgeport_1port_device); 3031 usb_serial_deregister(&edgeport_2port_device); 3032} 3033 3034module_init(edgeport_init); 3035module_exit(edgeport_exit); 3036 3037/* Module information */ 3038MODULE_AUTHOR(DRIVER_AUTHOR); 3039MODULE_DESCRIPTION(DRIVER_DESC); 3040MODULE_LICENSE("GPL"); 3041MODULE_FIRMWARE("edgeport/down3.bin"); 3042 3043module_param(debug, bool, S_IRUGO | S_IWUSR); 3044MODULE_PARM_DESC(debug, "Debug enabled or not"); 3045 3046module_param(closing_wait, int, S_IRUGO | S_IWUSR); 3047MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 3048 3049module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 3050MODULE_PARM_DESC(ignore_cpu_rev, 3051 "Ignore the cpu revision when connecting to a device"); 3052 3053module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 3054MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 3055