io_ti.c revision 0fce06da6bb49a3973b7c2ab174761fbc848ca6c
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 68/* Product information read from the Edgeport */ 69struct product_info { 70 int TiMode; /* Current TI Mode */ 71 __u8 hardware_type; /* Type of hardware */ 72} __attribute__((packed)); 73 74struct edgeport_port { 75 __u16 uart_base; 76 __u16 dma_address; 77 __u8 shadow_msr; 78 __u8 shadow_mcr; 79 __u8 shadow_lsr; 80 __u8 lsr_mask; 81 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 82 wait without data before completing 83 a read short */ 84 int baud_rate; 85 int close_pending; 86 int lsr_event; 87 88 struct edgeport_serial *edge_serial; 89 struct usb_serial_port *port; 90 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 91 spinlock_t ep_lock; 92 int ep_read_urb_state; 93 int ep_write_urb_in_use; 94}; 95 96struct edgeport_serial { 97 struct product_info product_info; 98 u8 TI_I2C_Type; /* Type of I2C in UMP */ 99 u8 TiReadI2C; /* Set to TRUE if we have read the 100 I2c in Boot Mode */ 101 struct mutex es_lock; 102 int num_ports_open; 103 struct usb_serial *serial; 104}; 105 106 107/* Devices that this driver supports */ 108static const struct usb_device_id edgeport_1port_id_table[] = { 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 125 { } 126}; 127 128static const struct usb_device_id edgeport_2port_id_table[] = { 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 141 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 147 { } 148}; 149 150/* Devices that this driver supports */ 151static const struct usb_device_id id_table_combined[] = { 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 185 { } 186}; 187 188MODULE_DEVICE_TABLE(usb, id_table_combined); 189 190static unsigned char OperationalMajorVersion; 191static unsigned char OperationalMinorVersion; 192static unsigned short OperationalBuildNumber; 193 194static int closing_wait = EDGE_CLOSING_WAIT; 195static bool ignore_cpu_rev; 196static int default_uart_mode; /* RS232 */ 197 198static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 199 int length); 200 201static void stop_read(struct edgeport_port *edge_port); 202static int restart_read(struct edgeport_port *edge_port); 203 204static void edge_set_termios(struct tty_struct *tty, 205 struct usb_serial_port *port, struct ktermios *old_termios); 206static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 207 208/* sysfs attributes */ 209static int edge_create_sysfs_attrs(struct usb_serial_port *port); 210static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 211 212 213static int ti_vread_sync(struct usb_device *dev, __u8 request, 214 __u16 value, __u16 index, u8 *data, int size) 215{ 216 int status; 217 218 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 219 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 220 value, index, data, size, 1000); 221 if (status < 0) 222 return status; 223 if (status != size) { 224 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 225 __func__, size, status); 226 return -ECOMM; 227 } 228 return 0; 229} 230 231static int ti_vsend_sync(struct usb_device *dev, __u8 request, 232 __u16 value, __u16 index, u8 *data, int size) 233{ 234 int status; 235 236 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 237 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 238 value, index, data, size, 1000); 239 if (status < 0) 240 return status; 241 if (status != size) { 242 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 243 __func__, size, status); 244 return -ECOMM; 245 } 246 return 0; 247} 248 249static int send_cmd(struct usb_device *dev, __u8 command, 250 __u8 moduleid, __u16 value, u8 *data, 251 int size) 252{ 253 return ti_vsend_sync(dev, command, value, moduleid, data, size); 254} 255 256/* clear tx/rx buffers and fifo in TI UMP */ 257static int purge_port(struct usb_serial_port *port, __u16 mask) 258{ 259 int port_number = port->port_number; 260 261 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 262 263 return send_cmd(port->serial->dev, 264 UMPC_PURGE_PORT, 265 (__u8)(UMPM_UART1_PORT + port_number), 266 mask, 267 NULL, 268 0); 269} 270 271/** 272 * read_download_mem - Read edgeport memory from TI chip 273 * @dev: usb device pointer 274 * @start_address: Device CPU address at which to read 275 * @length: Length of above data 276 * @address_type: Can read both XDATA and I2C 277 * @buffer: pointer to input data buffer 278 */ 279static int read_download_mem(struct usb_device *dev, int start_address, 280 int length, __u8 address_type, __u8 *buffer) 281{ 282 int status = 0; 283 __u8 read_length; 284 __be16 be_start_address; 285 286 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 287 288 /* Read in blocks of 64 bytes 289 * (TI firmware can't handle more than 64 byte reads) 290 */ 291 while (length) { 292 if (length > 64) 293 read_length = 64; 294 else 295 read_length = (__u8)length; 296 297 if (read_length > 1) { 298 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 299 } 300 be_start_address = cpu_to_be16(start_address); 301 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 302 (__u16)address_type, 303 (__force __u16)be_start_address, 304 buffer, read_length); 305 306 if (status) { 307 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 308 return status; 309 } 310 311 if (read_length > 1) 312 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 313 314 /* Update pointers/length */ 315 start_address += read_length; 316 buffer += read_length; 317 length -= read_length; 318 } 319 320 return status; 321} 322 323static int read_ram(struct usb_device *dev, int start_address, 324 int length, __u8 *buffer) 325{ 326 return read_download_mem(dev, start_address, length, 327 DTK_ADDR_SPACE_XDATA, buffer); 328} 329 330/* Read edgeport memory to a given block */ 331static int read_boot_mem(struct edgeport_serial *serial, 332 int start_address, int length, __u8 *buffer) 333{ 334 int status = 0; 335 int i; 336 337 for (i = 0; i < length; i++) { 338 status = ti_vread_sync(serial->serial->dev, 339 UMPC_MEMORY_READ, serial->TI_I2C_Type, 340 (__u16)(start_address+i), &buffer[i], 0x01); 341 if (status) { 342 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 343 return status; 344 } 345 } 346 347 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 348 __func__, start_address, length); 349 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 350 351 serial->TiReadI2C = 1; 352 353 return status; 354} 355 356/* Write given block to TI EPROM memory */ 357static int write_boot_mem(struct edgeport_serial *serial, 358 int start_address, int length, __u8 *buffer) 359{ 360 int status = 0; 361 int i; 362 u8 *temp; 363 364 /* Must do a read before write */ 365 if (!serial->TiReadI2C) { 366 temp = kmalloc(1, GFP_KERNEL); 367 if (!temp) { 368 dev_err(&serial->serial->dev->dev, 369 "%s - out of memory\n", __func__); 370 return -ENOMEM; 371 } 372 status = read_boot_mem(serial, 0, 1, temp); 373 kfree(temp); 374 if (status) 375 return status; 376 } 377 378 for (i = 0; i < length; ++i) { 379 status = ti_vsend_sync(serial->serial->dev, 380 UMPC_MEMORY_WRITE, buffer[i], 381 (__u16)(i + start_address), NULL, 0); 382 if (status) 383 return status; 384 } 385 386 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 387 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 388 389 return status; 390} 391 392 393/* Write edgeport I2C memory to TI chip */ 394static int write_i2c_mem(struct edgeport_serial *serial, 395 int start_address, int length, __u8 address_type, __u8 *buffer) 396{ 397 struct device *dev = &serial->serial->dev->dev; 398 int status = 0; 399 int write_length; 400 __be16 be_start_address; 401 402 /* We can only send a maximum of 1 aligned byte page at a time */ 403 404 /* calculate the number of bytes left in the first page */ 405 write_length = EPROM_PAGE_SIZE - 406 (start_address & (EPROM_PAGE_SIZE - 1)); 407 408 if (write_length > length) 409 write_length = length; 410 411 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 412 __func__, start_address, write_length); 413 usb_serial_debug_data(dev, __func__, write_length, buffer); 414 415 /* Write first page */ 416 be_start_address = cpu_to_be16(start_address); 417 status = ti_vsend_sync(serial->serial->dev, 418 UMPC_MEMORY_WRITE, (__u16)address_type, 419 (__force __u16)be_start_address, 420 buffer, write_length); 421 if (status) { 422 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 423 return status; 424 } 425 426 length -= write_length; 427 start_address += write_length; 428 buffer += write_length; 429 430 /* We should be aligned now -- can write 431 max page size bytes at a time */ 432 while (length) { 433 if (length > EPROM_PAGE_SIZE) 434 write_length = EPROM_PAGE_SIZE; 435 else 436 write_length = length; 437 438 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 439 __func__, start_address, write_length); 440 usb_serial_debug_data(dev, __func__, write_length, buffer); 441 442 /* Write next page */ 443 be_start_address = cpu_to_be16(start_address); 444 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 445 (__u16)address_type, 446 (__force __u16)be_start_address, 447 buffer, write_length); 448 if (status) { 449 dev_err(dev, "%s - ERROR %d\n", __func__, status); 450 return status; 451 } 452 453 length -= write_length; 454 start_address += write_length; 455 buffer += write_length; 456 } 457 return status; 458} 459 460/* Examine the UMP DMA registers and LSR 461 * 462 * Check the MSBit of the X and Y DMA byte count registers. 463 * A zero in this bit indicates that the TX DMA buffers are empty 464 * then check the TX Empty bit in the UART. 465 */ 466static int tx_active(struct edgeport_port *port) 467{ 468 int status; 469 struct out_endpoint_desc_block *oedb; 470 __u8 *lsr; 471 int bytes_left = 0; 472 473 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 474 if (!oedb) { 475 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 476 return -ENOMEM; 477 } 478 479 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 480 as not all platforms can do DMA 481 from stack */ 482 if (!lsr) { 483 kfree(oedb); 484 return -ENOMEM; 485 } 486 /* Read the DMA Count Registers */ 487 status = read_ram(port->port->serial->dev, port->dma_address, 488 sizeof(*oedb), (void *)oedb); 489 if (status) 490 goto exit_is_tx_active; 491 492 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 493 494 /* and the LSR */ 495 status = read_ram(port->port->serial->dev, 496 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 497 498 if (status) 499 goto exit_is_tx_active; 500 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 501 502 /* If either buffer has data or we are transmitting then return TRUE */ 503 if ((oedb->XByteCount & 0x80) != 0) 504 bytes_left += 64; 505 506 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 507 bytes_left += 1; 508 509 /* We return Not Active if we get any kind of error */ 510exit_is_tx_active: 511 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 512 513 kfree(lsr); 514 kfree(oedb); 515 return bytes_left; 516} 517 518static int choose_config(struct usb_device *dev) 519{ 520 /* 521 * There may be multiple configurations on this device, in which case 522 * we would need to read and parse all of them to find out which one 523 * we want. However, we just support one config at this point, 524 * configuration # 1, which is Config Descriptor 0. 525 */ 526 527 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 528 __func__, dev->config->desc.bNumInterfaces); 529 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 530 __func__, dev->config->desc.bMaxPower * 2); 531 532 if (dev->config->desc.bNumInterfaces != 1) { 533 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 534 return -ENODEV; 535 } 536 537 return 0; 538} 539 540static int read_rom(struct edgeport_serial *serial, 541 int start_address, int length, __u8 *buffer) 542{ 543 int status; 544 545 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 546 status = read_download_mem(serial->serial->dev, 547 start_address, 548 length, 549 serial->TI_I2C_Type, 550 buffer); 551 } else { 552 status = read_boot_mem(serial, start_address, length, 553 buffer); 554 } 555 return status; 556} 557 558static int write_rom(struct edgeport_serial *serial, int start_address, 559 int length, __u8 *buffer) 560{ 561 if (serial->product_info.TiMode == TI_MODE_BOOT) 562 return write_boot_mem(serial, start_address, length, 563 buffer); 564 565 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 566 return write_i2c_mem(serial, start_address, length, 567 serial->TI_I2C_Type, buffer); 568 return -EINVAL; 569} 570 571 572 573/* Read a descriptor header from I2C based on type */ 574static int get_descriptor_addr(struct edgeport_serial *serial, 575 int desc_type, struct ti_i2c_desc *rom_desc) 576{ 577 int start_address; 578 int status; 579 580 /* Search for requested descriptor in I2C */ 581 start_address = 2; 582 do { 583 status = read_rom(serial, 584 start_address, 585 sizeof(struct ti_i2c_desc), 586 (__u8 *)rom_desc); 587 if (status) 588 return 0; 589 590 if (rom_desc->Type == desc_type) 591 return start_address; 592 593 start_address = start_address + sizeof(struct ti_i2c_desc) 594 + rom_desc->Size; 595 596 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 597 598 return 0; 599} 600 601/* Validate descriptor checksum */ 602static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 603{ 604 __u16 i; 605 __u8 cs = 0; 606 607 for (i = 0; i < rom_desc->Size; i++) 608 cs = (__u8)(cs + buffer[i]); 609 610 if (cs != rom_desc->CheckSum) { 611 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 612 return -EINVAL; 613 } 614 return 0; 615} 616 617/* Make sure that the I2C image is good */ 618static int check_i2c_image(struct edgeport_serial *serial) 619{ 620 struct device *dev = &serial->serial->dev->dev; 621 int status = 0; 622 struct ti_i2c_desc *rom_desc; 623 int start_address = 2; 624 __u8 *buffer; 625 __u16 ttype; 626 627 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 628 if (!rom_desc) { 629 dev_err(dev, "%s - out of memory\n", __func__); 630 return -ENOMEM; 631 } 632 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 633 if (!buffer) { 634 dev_err(dev, "%s - out of memory when allocating buffer\n", 635 __func__); 636 kfree(rom_desc); 637 return -ENOMEM; 638 } 639 640 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 641 status = read_rom(serial, 0, 1, buffer); 642 if (status) 643 goto out; 644 645 if (*buffer != UMP5152 && *buffer != UMP3410) { 646 dev_err(dev, "%s - invalid buffer signature\n", __func__); 647 status = -ENODEV; 648 goto out; 649 } 650 651 do { 652 /* Validate the I2C */ 653 status = read_rom(serial, 654 start_address, 655 sizeof(struct ti_i2c_desc), 656 (__u8 *)rom_desc); 657 if (status) 658 break; 659 660 if ((start_address + sizeof(struct ti_i2c_desc) + 661 rom_desc->Size) > TI_MAX_I2C_SIZE) { 662 status = -ENODEV; 663 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 664 break; 665 } 666 667 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 668 669 /* Skip type 2 record */ 670 ttype = rom_desc->Type & 0x0f; 671 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 672 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 673 /* Read the descriptor data */ 674 status = read_rom(serial, start_address + 675 sizeof(struct ti_i2c_desc), 676 rom_desc->Size, buffer); 677 if (status) 678 break; 679 680 status = valid_csum(rom_desc, buffer); 681 if (status) 682 break; 683 } 684 start_address = start_address + sizeof(struct ti_i2c_desc) + 685 rom_desc->Size; 686 687 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 688 (start_address < TI_MAX_I2C_SIZE)); 689 690 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 691 (start_address > TI_MAX_I2C_SIZE)) 692 status = -ENODEV; 693 694out: 695 kfree(buffer); 696 kfree(rom_desc); 697 return status; 698} 699 700static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 701{ 702 int status; 703 int start_address; 704 struct ti_i2c_desc *rom_desc; 705 struct edge_ti_manuf_descriptor *desc; 706 struct device *dev = &serial->serial->dev->dev; 707 708 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 709 if (!rom_desc) { 710 dev_err(dev, "%s - out of memory\n", __func__); 711 return -ENOMEM; 712 } 713 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 714 rom_desc); 715 716 if (!start_address) { 717 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 718 status = -ENODEV; 719 goto exit; 720 } 721 722 /* Read the descriptor data */ 723 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 724 rom_desc->Size, buffer); 725 if (status) 726 goto exit; 727 728 status = valid_csum(rom_desc, buffer); 729 730 desc = (struct edge_ti_manuf_descriptor *)buffer; 731 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 732 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 733 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 734 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 735 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 736 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 737 738exit: 739 kfree(rom_desc); 740 return status; 741} 742 743/* Build firmware header used for firmware update */ 744static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 745{ 746 __u8 *buffer; 747 int buffer_size; 748 int i; 749 int err; 750 __u8 cs = 0; 751 struct ti_i2c_desc *i2c_header; 752 struct ti_i2c_image_header *img_header; 753 struct ti_i2c_firmware_rec *firmware_rec; 754 const struct firmware *fw; 755 const char *fw_name = "edgeport/down3.bin"; 756 757 /* In order to update the I2C firmware we must change the type 2 record 758 * to type 0xF2. This will force the UMP to come up in Boot Mode. 759 * Then while in boot mode, the driver will download the latest 760 * firmware (padded to 15.5k) into the UMP ram. And finally when the 761 * device comes back up in download mode the driver will cause the new 762 * firmware to be copied from the UMP Ram to I2C and the firmware will 763 * update the record type from 0xf2 to 0x02. 764 */ 765 766 /* Allocate a 15.5k buffer + 2 bytes for version number 767 * (Firmware Record) */ 768 buffer_size = (((1024 * 16) - 512 ) + 769 sizeof(struct ti_i2c_firmware_rec)); 770 771 buffer = kmalloc(buffer_size, GFP_KERNEL); 772 if (!buffer) { 773 dev_err(dev, "%s - out of memory\n", __func__); 774 return -ENOMEM; 775 } 776 777 // Set entire image of 0xffs 778 memset(buffer, 0xff, buffer_size); 779 780 err = request_firmware(&fw, fw_name, dev); 781 if (err) { 782 dev_err(dev, "Failed to load image \"%s\" err %d\n", 783 fw_name, err); 784 kfree(buffer); 785 return err; 786 } 787 788 /* Save Download Version Number */ 789 OperationalMajorVersion = fw->data[0]; 790 OperationalMinorVersion = fw->data[1]; 791 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 792 793 /* Copy version number into firmware record */ 794 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 795 796 firmware_rec->Ver_Major = OperationalMajorVersion; 797 firmware_rec->Ver_Minor = OperationalMinorVersion; 798 799 /* Pointer to fw_down memory image */ 800 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 801 802 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 803 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 804 le16_to_cpu(img_header->Length)); 805 806 release_firmware(fw); 807 808 for (i=0; i < buffer_size; i++) { 809 cs = (__u8)(cs + buffer[i]); 810 } 811 812 kfree(buffer); 813 814 /* Build new header */ 815 i2c_header = (struct ti_i2c_desc *)header; 816 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 817 818 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 819 i2c_header->Size = (__u16)buffer_size; 820 i2c_header->CheckSum = cs; 821 firmware_rec->Ver_Major = OperationalMajorVersion; 822 firmware_rec->Ver_Minor = OperationalMinorVersion; 823 824 return 0; 825} 826 827/* Try to figure out what type of I2c we have */ 828static int i2c_type_bootmode(struct edgeport_serial *serial) 829{ 830 struct device *dev = &serial->serial->dev->dev; 831 int status; 832 u8 *data; 833 834 data = kmalloc(1, GFP_KERNEL); 835 if (!data) { 836 dev_err(dev, "%s - out of memory\n", __func__); 837 return -ENOMEM; 838 } 839 840 /* Try to read type 2 */ 841 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 842 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 843 if (status) 844 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 845 else 846 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 847 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 848 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 849 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 850 goto out; 851 } 852 853 /* Try to read type 3 */ 854 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 855 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 856 if (status) 857 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 858 else 859 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 860 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 861 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 862 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 863 goto out; 864 } 865 866 dev_dbg(dev, "%s - Unknown\n", __func__); 867 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 868 status = -ENODEV; 869out: 870 kfree(data); 871 return status; 872} 873 874static int bulk_xfer(struct usb_serial *serial, void *buffer, 875 int length, int *num_sent) 876{ 877 int status; 878 879 status = usb_bulk_msg(serial->dev, 880 usb_sndbulkpipe(serial->dev, 881 serial->port[0]->bulk_out_endpointAddress), 882 buffer, length, num_sent, 1000); 883 return status; 884} 885 886/* Download given firmware image to the device (IN BOOT MODE) */ 887static int download_code(struct edgeport_serial *serial, __u8 *image, 888 int image_length) 889{ 890 int status = 0; 891 int pos; 892 int transfer; 893 int done; 894 895 /* Transfer firmware image */ 896 for (pos = 0; pos < image_length; ) { 897 /* Read the next buffer from file */ 898 transfer = image_length - pos; 899 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 900 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 901 902 /* Transfer data */ 903 status = bulk_xfer(serial->serial, &image[pos], 904 transfer, &done); 905 if (status) 906 break; 907 /* Advance buffer pointer */ 908 pos += done; 909 } 910 911 return status; 912} 913 914/* FIXME!!! */ 915static int config_boot_dev(struct usb_device *dev) 916{ 917 return 0; 918} 919 920static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 921{ 922 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 923} 924 925/** 926 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 927 * 928 * This routine downloads the main operating code into the TI5052, using the 929 * boot code already burned into E2PROM or ROM. 930 */ 931static int download_fw(struct edgeport_serial *serial) 932{ 933 struct device *dev = &serial->serial->dev->dev; 934 int status = 0; 935 int start_address; 936 struct edge_ti_manuf_descriptor *ti_manuf_desc; 937 struct usb_interface_descriptor *interface; 938 int download_cur_ver; 939 int download_new_ver; 940 941 /* This routine is entered by both the BOOT mode and the Download mode 942 * We can determine which code is running by the reading the config 943 * descriptor and if we have only one bulk pipe it is in boot mode 944 */ 945 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 946 947 /* Default to type 2 i2c */ 948 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 949 950 status = choose_config(serial->serial->dev); 951 if (status) 952 return status; 953 954 interface = &serial->serial->interface->cur_altsetting->desc; 955 if (!interface) { 956 dev_err(dev, "%s - no interface set, error!\n", __func__); 957 return -ENODEV; 958 } 959 960 /* 961 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 962 * if we have more than one endpoint we are definitely in download 963 * mode 964 */ 965 if (interface->bNumEndpoints > 1) 966 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 967 else 968 /* Otherwise we will remain in configuring mode */ 969 serial->product_info.TiMode = TI_MODE_CONFIGURING; 970 971 /********************************************************************/ 972 /* Download Mode */ 973 /********************************************************************/ 974 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 975 struct ti_i2c_desc *rom_desc; 976 977 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 978 979 status = check_i2c_image(serial); 980 if (status) { 981 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 982 return status; 983 } 984 985 /* Validate Hardware version number 986 * Read Manufacturing Descriptor from TI Based Edgeport 987 */ 988 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 989 if (!ti_manuf_desc) { 990 dev_err(dev, "%s - out of memory.\n", __func__); 991 return -ENOMEM; 992 } 993 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 994 if (status) { 995 kfree(ti_manuf_desc); 996 return status; 997 } 998 999 /* Check version number of ION descriptor */ 1000 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1001 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1002 __func__, ti_cpu_rev(ti_manuf_desc)); 1003 kfree(ti_manuf_desc); 1004 return -EINVAL; 1005 } 1006 1007 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1008 if (!rom_desc) { 1009 dev_err(dev, "%s - out of memory.\n", __func__); 1010 kfree(ti_manuf_desc); 1011 return -ENOMEM; 1012 } 1013 1014 /* Search for type 2 record (firmware record) */ 1015 start_address = get_descriptor_addr(serial, 1016 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1017 if (start_address != 0) { 1018 struct ti_i2c_firmware_rec *firmware_version; 1019 u8 *record; 1020 1021 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1022 1023 firmware_version = kmalloc(sizeof(*firmware_version), 1024 GFP_KERNEL); 1025 if (!firmware_version) { 1026 dev_err(dev, "%s - out of memory.\n", __func__); 1027 kfree(rom_desc); 1028 kfree(ti_manuf_desc); 1029 return -ENOMEM; 1030 } 1031 1032 /* Validate version number 1033 * Read the descriptor data 1034 */ 1035 status = read_rom(serial, start_address + 1036 sizeof(struct ti_i2c_desc), 1037 sizeof(struct ti_i2c_firmware_rec), 1038 (__u8 *)firmware_version); 1039 if (status) { 1040 kfree(firmware_version); 1041 kfree(rom_desc); 1042 kfree(ti_manuf_desc); 1043 return status; 1044 } 1045 1046 /* Check version number of download with current 1047 version in I2c */ 1048 download_cur_ver = (firmware_version->Ver_Major << 8) + 1049 (firmware_version->Ver_Minor); 1050 download_new_ver = (OperationalMajorVersion << 8) + 1051 (OperationalMinorVersion); 1052 1053 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1054 __func__, firmware_version->Ver_Major, 1055 firmware_version->Ver_Minor, 1056 OperationalMajorVersion, 1057 OperationalMinorVersion); 1058 1059 /* Check if we have an old version in the I2C and 1060 update if necessary */ 1061 if (download_cur_ver < download_new_ver) { 1062 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1063 __func__, 1064 firmware_version->Ver_Major, 1065 firmware_version->Ver_Minor, 1066 OperationalMajorVersion, 1067 OperationalMinorVersion); 1068 1069 record = kmalloc(1, GFP_KERNEL); 1070 if (!record) { 1071 dev_err(dev, "%s - out of memory.\n", 1072 __func__); 1073 kfree(firmware_version); 1074 kfree(rom_desc); 1075 kfree(ti_manuf_desc); 1076 return -ENOMEM; 1077 } 1078 /* In order to update the I2C firmware we must 1079 * change the type 2 record to type 0xF2. This 1080 * will force the UMP to come up in Boot Mode. 1081 * Then while in boot mode, the driver will 1082 * download the latest firmware (padded to 1083 * 15.5k) into the UMP ram. Finally when the 1084 * device comes back up in download mode the 1085 * driver will cause the new firmware to be 1086 * copied from the UMP Ram to I2C and the 1087 * firmware will update the record type from 1088 * 0xf2 to 0x02. 1089 */ 1090 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1091 1092 /* Change the I2C Firmware record type to 1093 0xf2 to trigger an update */ 1094 status = write_rom(serial, start_address, 1095 sizeof(*record), record); 1096 if (status) { 1097 kfree(record); 1098 kfree(firmware_version); 1099 kfree(rom_desc); 1100 kfree(ti_manuf_desc); 1101 return status; 1102 } 1103 1104 /* verify the write -- must do this in order 1105 * for write to complete before we do the 1106 * hardware reset 1107 */ 1108 status = read_rom(serial, 1109 start_address, 1110 sizeof(*record), 1111 record); 1112 if (status) { 1113 kfree(record); 1114 kfree(firmware_version); 1115 kfree(rom_desc); 1116 kfree(ti_manuf_desc); 1117 return status; 1118 } 1119 1120 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1121 dev_err(dev, "%s - error resetting device\n", __func__); 1122 kfree(record); 1123 kfree(firmware_version); 1124 kfree(rom_desc); 1125 kfree(ti_manuf_desc); 1126 return -ENODEV; 1127 } 1128 1129 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1130 1131 /* Reset UMP -- Back to BOOT MODE */ 1132 status = ti_vsend_sync(serial->serial->dev, 1133 UMPC_HARDWARE_RESET, 1134 0, 0, NULL, 0); 1135 1136 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1137 1138 /* return an error on purpose. */ 1139 kfree(record); 1140 kfree(firmware_version); 1141 kfree(rom_desc); 1142 kfree(ti_manuf_desc); 1143 return -ENODEV; 1144 } 1145 kfree(firmware_version); 1146 } 1147 /* Search for type 0xF2 record (firmware blank record) */ 1148 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1149#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1150 sizeof(struct ti_i2c_firmware_rec)) 1151 __u8 *header; 1152 __u8 *vheader; 1153 1154 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1155 if (!header) { 1156 dev_err(dev, "%s - out of memory.\n", __func__); 1157 kfree(rom_desc); 1158 kfree(ti_manuf_desc); 1159 return -ENOMEM; 1160 } 1161 1162 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1163 if (!vheader) { 1164 dev_err(dev, "%s - out of memory.\n", __func__); 1165 kfree(header); 1166 kfree(rom_desc); 1167 kfree(ti_manuf_desc); 1168 return -ENOMEM; 1169 } 1170 1171 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1172 1173 /* 1174 * In order to update the I2C firmware we must change 1175 * the type 2 record to type 0xF2. This will force the 1176 * UMP to come up in Boot Mode. Then while in boot 1177 * mode, the driver will download the latest firmware 1178 * (padded to 15.5k) into the UMP ram. Finally when the 1179 * device comes back up in download mode the driver 1180 * will cause the new firmware to be copied from the 1181 * UMP Ram to I2C and the firmware will update the 1182 * record type from 0xf2 to 0x02. 1183 */ 1184 status = build_i2c_fw_hdr(header, dev); 1185 if (status) { 1186 kfree(vheader); 1187 kfree(header); 1188 kfree(rom_desc); 1189 kfree(ti_manuf_desc); 1190 return -EINVAL; 1191 } 1192 1193 /* Update I2C with type 0xf2 record with correct 1194 size and checksum */ 1195 status = write_rom(serial, 1196 start_address, 1197 HEADER_SIZE, 1198 header); 1199 if (status) { 1200 kfree(vheader); 1201 kfree(header); 1202 kfree(rom_desc); 1203 kfree(ti_manuf_desc); 1204 return -EINVAL; 1205 } 1206 1207 /* verify the write -- must do this in order for 1208 write to complete before we do the hardware reset */ 1209 status = read_rom(serial, start_address, 1210 HEADER_SIZE, vheader); 1211 1212 if (status) { 1213 dev_dbg(dev, "%s - can't read header back\n", __func__); 1214 kfree(vheader); 1215 kfree(header); 1216 kfree(rom_desc); 1217 kfree(ti_manuf_desc); 1218 return status; 1219 } 1220 if (memcmp(vheader, header, HEADER_SIZE)) { 1221 dev_dbg(dev, "%s - write download record failed\n", __func__); 1222 kfree(vheader); 1223 kfree(header); 1224 kfree(rom_desc); 1225 kfree(ti_manuf_desc); 1226 return -EINVAL; 1227 } 1228 1229 kfree(vheader); 1230 kfree(header); 1231 1232 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1233 1234 /* Tell firmware to copy download image into I2C */ 1235 status = ti_vsend_sync(serial->serial->dev, 1236 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1237 1238 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1239 if (status) { 1240 dev_err(dev, 1241 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1242 __func__); 1243 kfree(rom_desc); 1244 kfree(ti_manuf_desc); 1245 return status; 1246 } 1247 } 1248 1249 // The device is running the download code 1250 kfree(rom_desc); 1251 kfree(ti_manuf_desc); 1252 return 0; 1253 } 1254 1255 /********************************************************************/ 1256 /* Boot Mode */ 1257 /********************************************************************/ 1258 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1259 1260 /* Configure the TI device so we can use the BULK pipes for download */ 1261 status = config_boot_dev(serial->serial->dev); 1262 if (status) 1263 return status; 1264 1265 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1266 != USB_VENDOR_ID_ION) { 1267 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1268 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1269 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1270 goto stayinbootmode; 1271 } 1272 1273 /* We have an ION device (I2c Must be programmed) 1274 Determine I2C image type */ 1275 if (i2c_type_bootmode(serial)) 1276 goto stayinbootmode; 1277 1278 /* Check for ION Vendor ID and that the I2C is valid */ 1279 if (!check_i2c_image(serial)) { 1280 struct ti_i2c_image_header *header; 1281 int i; 1282 __u8 cs = 0; 1283 __u8 *buffer; 1284 int buffer_size; 1285 int err; 1286 const struct firmware *fw; 1287 const char *fw_name = "edgeport/down3.bin"; 1288 1289 /* Validate Hardware version number 1290 * Read Manufacturing Descriptor from TI Based Edgeport 1291 */ 1292 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1293 if (!ti_manuf_desc) { 1294 dev_err(dev, "%s - out of memory.\n", __func__); 1295 return -ENOMEM; 1296 } 1297 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1298 if (status) { 1299 kfree(ti_manuf_desc); 1300 goto stayinbootmode; 1301 } 1302 1303 /* Check for version 2 */ 1304 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1305 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1306 __func__, ti_cpu_rev(ti_manuf_desc)); 1307 kfree(ti_manuf_desc); 1308 goto stayinbootmode; 1309 } 1310 1311 kfree(ti_manuf_desc); 1312 1313 /* 1314 * In order to update the I2C firmware we must change the type 1315 * 2 record to type 0xF2. This will force the UMP to come up 1316 * in Boot Mode. Then while in boot mode, the driver will 1317 * download the latest firmware (padded to 15.5k) into the 1318 * UMP ram. Finally when the device comes back up in download 1319 * mode the driver will cause the new firmware to be copied 1320 * from the UMP Ram to I2C and the firmware will update the 1321 * record type from 0xf2 to 0x02. 1322 * 1323 * Do we really have to copy the whole firmware image, 1324 * or could we do this in place! 1325 */ 1326 1327 /* Allocate a 15.5k buffer + 3 byte header */ 1328 buffer_size = (((1024 * 16) - 512) + 1329 sizeof(struct ti_i2c_image_header)); 1330 buffer = kmalloc(buffer_size, GFP_KERNEL); 1331 if (!buffer) { 1332 dev_err(dev, "%s - out of memory\n", __func__); 1333 return -ENOMEM; 1334 } 1335 1336 /* Initialize the buffer to 0xff (pad the buffer) */ 1337 memset(buffer, 0xff, buffer_size); 1338 1339 err = request_firmware(&fw, fw_name, dev); 1340 if (err) { 1341 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1342 fw_name, err); 1343 kfree(buffer); 1344 return err; 1345 } 1346 memcpy(buffer, &fw->data[4], fw->size - 4); 1347 release_firmware(fw); 1348 1349 for (i = sizeof(struct ti_i2c_image_header); 1350 i < buffer_size; i++) { 1351 cs = (__u8)(cs + buffer[i]); 1352 } 1353 1354 header = (struct ti_i2c_image_header *)buffer; 1355 1356 /* update length and checksum after padding */ 1357 header->Length = cpu_to_le16((__u16)(buffer_size - 1358 sizeof(struct ti_i2c_image_header))); 1359 header->CheckSum = cs; 1360 1361 /* Download the operational code */ 1362 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1363 status = download_code(serial, buffer, buffer_size); 1364 1365 kfree(buffer); 1366 1367 if (status) { 1368 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1369 return status; 1370 } 1371 1372 /* Device will reboot */ 1373 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1374 1375 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1376 1377 /* return an error on purpose */ 1378 return -ENODEV; 1379 } 1380 1381stayinbootmode: 1382 /* Eprom is invalid or blank stay in boot mode */ 1383 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1384 serial->product_info.TiMode = TI_MODE_BOOT; 1385 1386 return 0; 1387} 1388 1389 1390static int ti_do_config(struct edgeport_port *port, int feature, int on) 1391{ 1392 int port_number = port->port->port_number; 1393 1394 on = !!on; /* 1 or 0 not bitmask */ 1395 return send_cmd(port->port->serial->dev, 1396 feature, (__u8)(UMPM_UART1_PORT + port_number), 1397 on, NULL, 0); 1398} 1399 1400 1401static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1402{ 1403 int status = 0; 1404 1405 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1406 1407 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1408 if (status) 1409 return status; 1410 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1411 if (status) 1412 return status; 1413 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1414} 1415 1416/* Convert TI LSR to standard UART flags */ 1417static __u8 map_line_status(__u8 ti_lsr) 1418{ 1419 __u8 lsr = 0; 1420 1421#define MAP_FLAG(flagUmp, flagUart) \ 1422 if (ti_lsr & flagUmp) \ 1423 lsr |= flagUart; 1424 1425 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1426 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1427 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1428 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1429 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1430 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1431 1432#undef MAP_FLAG 1433 1434 return lsr; 1435} 1436 1437static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1438{ 1439 struct async_icount *icount; 1440 struct tty_struct *tty; 1441 1442 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1443 1444 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1445 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1446 icount = &edge_port->port->icount; 1447 1448 /* update input line counters */ 1449 if (msr & EDGEPORT_MSR_DELTA_CTS) 1450 icount->cts++; 1451 if (msr & EDGEPORT_MSR_DELTA_DSR) 1452 icount->dsr++; 1453 if (msr & EDGEPORT_MSR_DELTA_CD) 1454 icount->dcd++; 1455 if (msr & EDGEPORT_MSR_DELTA_RI) 1456 icount->rng++; 1457 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1458 } 1459 1460 /* Save the new modem status */ 1461 edge_port->shadow_msr = msr & 0xf0; 1462 1463 tty = tty_port_tty_get(&edge_port->port->port); 1464 /* handle CTS flow control */ 1465 if (tty && C_CRTSCTS(tty)) { 1466 if (msr & EDGEPORT_MSR_CTS) { 1467 tty->hw_stopped = 0; 1468 tty_wakeup(tty); 1469 } else { 1470 tty->hw_stopped = 1; 1471 } 1472 } 1473 tty_kref_put(tty); 1474} 1475 1476static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1477 __u8 lsr, __u8 data) 1478{ 1479 struct async_icount *icount; 1480 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1481 LSR_FRM_ERR | LSR_BREAK)); 1482 1483 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1484 1485 edge_port->shadow_lsr = lsr; 1486 1487 if (new_lsr & LSR_BREAK) 1488 /* 1489 * Parity and Framing errors only count if they 1490 * occur exclusive of a break being received. 1491 */ 1492 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1493 1494 /* Place LSR data byte into Rx buffer */ 1495 if (lsr_data) 1496 edge_tty_recv(edge_port->port, &data, 1); 1497 1498 /* update input line counters */ 1499 icount = &edge_port->port->icount; 1500 if (new_lsr & LSR_BREAK) 1501 icount->brk++; 1502 if (new_lsr & LSR_OVER_ERR) 1503 icount->overrun++; 1504 if (new_lsr & LSR_PAR_ERR) 1505 icount->parity++; 1506 if (new_lsr & LSR_FRM_ERR) 1507 icount->frame++; 1508} 1509 1510 1511static void edge_interrupt_callback(struct urb *urb) 1512{ 1513 struct edgeport_serial *edge_serial = urb->context; 1514 struct usb_serial_port *port; 1515 struct edgeport_port *edge_port; 1516 struct device *dev; 1517 unsigned char *data = urb->transfer_buffer; 1518 int length = urb->actual_length; 1519 int port_number; 1520 int function; 1521 int retval; 1522 __u8 lsr; 1523 __u8 msr; 1524 int status = urb->status; 1525 1526 switch (status) { 1527 case 0: 1528 /* success */ 1529 break; 1530 case -ECONNRESET: 1531 case -ENOENT: 1532 case -ESHUTDOWN: 1533 /* this urb is terminated, clean up */ 1534 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1535 __func__, status); 1536 return; 1537 default: 1538 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1539 "%d\n", __func__, status); 1540 goto exit; 1541 } 1542 1543 if (!length) { 1544 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1545 goto exit; 1546 } 1547 1548 dev = &edge_serial->serial->dev->dev; 1549 usb_serial_debug_data(dev, __func__, length, data); 1550 1551 if (length != 2) { 1552 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1553 goto exit; 1554 } 1555 1556 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1557 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1558 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1559 port_number, function, data[1]); 1560 port = edge_serial->serial->port[port_number]; 1561 edge_port = usb_get_serial_port_data(port); 1562 if (!edge_port) { 1563 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1564 return; 1565 } 1566 switch (function) { 1567 case TIUMP_INTERRUPT_CODE_LSR: 1568 lsr = map_line_status(data[1]); 1569 if (lsr & UMP_UART_LSR_DATA_MASK) { 1570 /* Save the LSR event for bulk read 1571 completion routine */ 1572 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1573 __func__, port_number, lsr); 1574 edge_port->lsr_event = 1; 1575 edge_port->lsr_mask = lsr; 1576 } else { 1577 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1578 __func__, port_number, lsr); 1579 handle_new_lsr(edge_port, 0, lsr, 0); 1580 } 1581 break; 1582 1583 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1584 /* Copy MSR from UMP */ 1585 msr = data[1]; 1586 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1587 __func__, port_number, msr); 1588 handle_new_msr(edge_port, msr); 1589 break; 1590 1591 default: 1592 dev_err(&urb->dev->dev, 1593 "%s - Unknown Interrupt code from UMP %x\n", 1594 __func__, data[1]); 1595 break; 1596 1597 } 1598 1599exit: 1600 retval = usb_submit_urb(urb, GFP_ATOMIC); 1601 if (retval) 1602 dev_err(&urb->dev->dev, 1603 "%s - usb_submit_urb failed with result %d\n", 1604 __func__, retval); 1605} 1606 1607static void edge_bulk_in_callback(struct urb *urb) 1608{ 1609 struct edgeport_port *edge_port = urb->context; 1610 struct device *dev = &edge_port->port->dev; 1611 unsigned char *data = urb->transfer_buffer; 1612 int retval = 0; 1613 int port_number; 1614 int status = urb->status; 1615 1616 switch (status) { 1617 case 0: 1618 /* success */ 1619 break; 1620 case -ECONNRESET: 1621 case -ENOENT: 1622 case -ESHUTDOWN: 1623 /* this urb is terminated, clean up */ 1624 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1625 return; 1626 default: 1627 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1628 } 1629 1630 if (status == -EPIPE) 1631 goto exit; 1632 1633 if (status) { 1634 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1635 return; 1636 } 1637 1638 port_number = edge_port->port->port_number; 1639 1640 if (edge_port->lsr_event) { 1641 edge_port->lsr_event = 0; 1642 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1643 __func__, port_number, edge_port->lsr_mask, *data); 1644 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1645 /* Adjust buffer length/pointer */ 1646 --urb->actual_length; 1647 ++data; 1648 } 1649 1650 if (urb->actual_length) { 1651 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1652 if (edge_port->close_pending) 1653 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1654 __func__); 1655 else 1656 edge_tty_recv(edge_port->port, data, 1657 urb->actual_length); 1658 edge_port->port->icount.rx += urb->actual_length; 1659 } 1660 1661exit: 1662 /* continue read unless stopped */ 1663 spin_lock(&edge_port->ep_lock); 1664 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1665 retval = usb_submit_urb(urb, GFP_ATOMIC); 1666 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1667 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1668 1669 spin_unlock(&edge_port->ep_lock); 1670 if (retval) 1671 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1672} 1673 1674static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1675 int length) 1676{ 1677 int queued; 1678 1679 queued = tty_insert_flip_string(&port->port, data, length); 1680 if (queued < length) 1681 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1682 __func__, length - queued); 1683 tty_flip_buffer_push(&port->port); 1684} 1685 1686static void edge_bulk_out_callback(struct urb *urb) 1687{ 1688 struct usb_serial_port *port = urb->context; 1689 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1690 int status = urb->status; 1691 struct tty_struct *tty; 1692 1693 edge_port->ep_write_urb_in_use = 0; 1694 1695 switch (status) { 1696 case 0: 1697 /* success */ 1698 break; 1699 case -ECONNRESET: 1700 case -ENOENT: 1701 case -ESHUTDOWN: 1702 /* this urb is terminated, clean up */ 1703 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1704 __func__, status); 1705 return; 1706 default: 1707 dev_err_console(port, "%s - nonzero write bulk status " 1708 "received: %d\n", __func__, status); 1709 } 1710 1711 /* send any buffered data */ 1712 tty = tty_port_tty_get(&port->port); 1713 edge_send(port, tty); 1714 tty_kref_put(tty); 1715} 1716 1717static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1718{ 1719 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1720 struct edgeport_serial *edge_serial; 1721 struct usb_device *dev; 1722 struct urb *urb; 1723 int port_number; 1724 int status; 1725 u16 open_settings; 1726 u8 transaction_timeout; 1727 1728 if (edge_port == NULL) 1729 return -ENODEV; 1730 1731 port_number = port->port_number; 1732 1733 dev = port->serial->dev; 1734 1735 /* turn off loopback */ 1736 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1737 if (status) { 1738 dev_err(&port->dev, 1739 "%s - cannot send clear loopback command, %d\n", 1740 __func__, status); 1741 return status; 1742 } 1743 1744 /* set up the port settings */ 1745 if (tty) 1746 edge_set_termios(tty, port, &tty->termios); 1747 1748 /* open up the port */ 1749 1750 /* milliseconds to timeout for DMA transfer */ 1751 transaction_timeout = 2; 1752 1753 edge_port->ump_read_timeout = 1754 max(20, ((transaction_timeout * 3) / 2)); 1755 1756 /* milliseconds to timeout for DMA transfer */ 1757 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1758 UMP_PIPE_TRANS_TIMEOUT_ENA | 1759 (transaction_timeout << 2)); 1760 1761 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1762 1763 /* Tell TI to open and start the port */ 1764 status = send_cmd(dev, UMPC_OPEN_PORT, 1765 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1766 if (status) { 1767 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1768 __func__, status); 1769 return status; 1770 } 1771 1772 /* Start the DMA? */ 1773 status = send_cmd(dev, UMPC_START_PORT, 1774 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1775 if (status) { 1776 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1777 __func__, status); 1778 return status; 1779 } 1780 1781 /* Clear TX and RX buffers in UMP */ 1782 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1783 if (status) { 1784 dev_err(&port->dev, 1785 "%s - cannot send clear buffers command, %d\n", 1786 __func__, status); 1787 return status; 1788 } 1789 1790 /* Read Initial MSR */ 1791 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1792 (__u16)(UMPM_UART1_PORT + port_number), 1793 &edge_port->shadow_msr, 1); 1794 if (status) { 1795 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1796 __func__, status); 1797 return status; 1798 } 1799 1800 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1801 1802 /* Set Initial MCR */ 1803 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1804 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1805 1806 edge_serial = edge_port->edge_serial; 1807 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1808 return -ERESTARTSYS; 1809 if (edge_serial->num_ports_open == 0) { 1810 /* we are the first port to open, post the interrupt urb */ 1811 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1812 if (!urb) { 1813 dev_err(&port->dev, 1814 "%s - no interrupt urb present, exiting\n", 1815 __func__); 1816 status = -EINVAL; 1817 goto release_es_lock; 1818 } 1819 urb->context = edge_serial; 1820 status = usb_submit_urb(urb, GFP_KERNEL); 1821 if (status) { 1822 dev_err(&port->dev, 1823 "%s - usb_submit_urb failed with value %d\n", 1824 __func__, status); 1825 goto release_es_lock; 1826 } 1827 } 1828 1829 /* 1830 * reset the data toggle on the bulk endpoints to work around bug in 1831 * host controllers where things get out of sync some times 1832 */ 1833 usb_clear_halt(dev, port->write_urb->pipe); 1834 usb_clear_halt(dev, port->read_urb->pipe); 1835 1836 /* start up our bulk read urb */ 1837 urb = port->read_urb; 1838 if (!urb) { 1839 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1840 __func__); 1841 status = -EINVAL; 1842 goto unlink_int_urb; 1843 } 1844 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1845 urb->context = edge_port; 1846 status = usb_submit_urb(urb, GFP_KERNEL); 1847 if (status) { 1848 dev_err(&port->dev, 1849 "%s - read bulk usb_submit_urb failed with value %d\n", 1850 __func__, status); 1851 goto unlink_int_urb; 1852 } 1853 1854 ++edge_serial->num_ports_open; 1855 1856 goto release_es_lock; 1857 1858unlink_int_urb: 1859 if (edge_port->edge_serial->num_ports_open == 0) 1860 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1861release_es_lock: 1862 mutex_unlock(&edge_serial->es_lock); 1863 return status; 1864} 1865 1866static void edge_close(struct usb_serial_port *port) 1867{ 1868 struct edgeport_serial *edge_serial; 1869 struct edgeport_port *edge_port; 1870 struct usb_serial *serial = port->serial; 1871 unsigned long flags; 1872 int port_number; 1873 1874 edge_serial = usb_get_serial_data(port->serial); 1875 edge_port = usb_get_serial_port_data(port); 1876 if (edge_serial == NULL || edge_port == NULL) 1877 return; 1878 1879 /* The bulkreadcompletion routine will check 1880 * this flag and dump add read data */ 1881 edge_port->close_pending = 1; 1882 1883 usb_kill_urb(port->read_urb); 1884 usb_kill_urb(port->write_urb); 1885 edge_port->ep_write_urb_in_use = 0; 1886 spin_lock_irqsave(&edge_port->ep_lock, flags); 1887 kfifo_reset_out(&port->write_fifo); 1888 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1889 1890 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1891 port_number = port->port_number; 1892 send_cmd(serial->dev, UMPC_CLOSE_PORT, 1893 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1894 1895 mutex_lock(&edge_serial->es_lock); 1896 --edge_port->edge_serial->num_ports_open; 1897 if (edge_port->edge_serial->num_ports_open <= 0) { 1898 /* last port is now closed, let's shut down our interrupt urb */ 1899 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1900 edge_port->edge_serial->num_ports_open = 0; 1901 } 1902 mutex_unlock(&edge_serial->es_lock); 1903 edge_port->close_pending = 0; 1904} 1905 1906static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1907 const unsigned char *data, int count) 1908{ 1909 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1910 1911 if (count == 0) { 1912 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1913 return 0; 1914 } 1915 1916 if (edge_port == NULL) 1917 return -ENODEV; 1918 if (edge_port->close_pending == 1) 1919 return -ENODEV; 1920 1921 count = kfifo_in_locked(&port->write_fifo, data, count, 1922 &edge_port->ep_lock); 1923 edge_send(port, tty); 1924 1925 return count; 1926} 1927 1928static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 1929{ 1930 int count, result; 1931 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1932 unsigned long flags; 1933 1934 spin_lock_irqsave(&edge_port->ep_lock, flags); 1935 1936 if (edge_port->ep_write_urb_in_use) { 1937 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1938 return; 1939 } 1940 1941 count = kfifo_out(&port->write_fifo, 1942 port->write_urb->transfer_buffer, 1943 port->bulk_out_size); 1944 1945 if (count == 0) { 1946 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1947 return; 1948 } 1949 1950 edge_port->ep_write_urb_in_use = 1; 1951 1952 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1953 1954 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1955 1956 /* set up our urb */ 1957 port->write_urb->transfer_buffer_length = count; 1958 1959 /* send the data out the bulk port */ 1960 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1961 if (result) { 1962 dev_err_console(port, 1963 "%s - failed submitting write urb, error %d\n", 1964 __func__, result); 1965 edge_port->ep_write_urb_in_use = 0; 1966 /* TODO: reschedule edge_send */ 1967 } else 1968 edge_port->port->icount.tx += count; 1969 1970 /* wakeup any process waiting for writes to complete */ 1971 /* there is now more room in the buffer for new writes */ 1972 if (tty) 1973 tty_wakeup(tty); 1974} 1975 1976static int edge_write_room(struct tty_struct *tty) 1977{ 1978 struct usb_serial_port *port = tty->driver_data; 1979 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1980 int room = 0; 1981 unsigned long flags; 1982 1983 if (edge_port == NULL) 1984 return 0; 1985 if (edge_port->close_pending == 1) 1986 return 0; 1987 1988 spin_lock_irqsave(&edge_port->ep_lock, flags); 1989 room = kfifo_avail(&port->write_fifo); 1990 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1991 1992 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 1993 return room; 1994} 1995 1996static int edge_chars_in_buffer(struct tty_struct *tty) 1997{ 1998 struct usb_serial_port *port = tty->driver_data; 1999 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2000 int chars = 0; 2001 unsigned long flags; 2002 if (edge_port == NULL) 2003 return 0; 2004 2005 spin_lock_irqsave(&edge_port->ep_lock, flags); 2006 chars = kfifo_len(&port->write_fifo); 2007 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2008 2009 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2010 return chars; 2011} 2012 2013static bool edge_tx_empty(struct usb_serial_port *port) 2014{ 2015 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2016 int ret; 2017 2018 ret = tx_active(edge_port); 2019 if (ret > 0) 2020 return false; 2021 2022 return true; 2023} 2024 2025static void edge_throttle(struct tty_struct *tty) 2026{ 2027 struct usb_serial_port *port = tty->driver_data; 2028 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2029 int status; 2030 2031 if (edge_port == NULL) 2032 return; 2033 2034 /* if we are implementing XON/XOFF, send the stop character */ 2035 if (I_IXOFF(tty)) { 2036 unsigned char stop_char = STOP_CHAR(tty); 2037 status = edge_write(tty, port, &stop_char, 1); 2038 if (status <= 0) { 2039 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2040 } 2041 } 2042 2043 /* if we are implementing RTS/CTS, stop reads */ 2044 /* and the Edgeport will clear the RTS line */ 2045 if (C_CRTSCTS(tty)) 2046 stop_read(edge_port); 2047 2048} 2049 2050static void edge_unthrottle(struct tty_struct *tty) 2051{ 2052 struct usb_serial_port *port = tty->driver_data; 2053 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2054 int status; 2055 2056 if (edge_port == NULL) 2057 return; 2058 2059 /* if we are implementing XON/XOFF, send the start character */ 2060 if (I_IXOFF(tty)) { 2061 unsigned char start_char = START_CHAR(tty); 2062 status = edge_write(tty, port, &start_char, 1); 2063 if (status <= 0) { 2064 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2065 } 2066 } 2067 /* if we are implementing RTS/CTS, restart reads */ 2068 /* are the Edgeport will assert the RTS line */ 2069 if (C_CRTSCTS(tty)) { 2070 status = restart_read(edge_port); 2071 if (status) 2072 dev_err(&port->dev, 2073 "%s - read bulk usb_submit_urb failed: %d\n", 2074 __func__, status); 2075 } 2076 2077} 2078 2079static void stop_read(struct edgeport_port *edge_port) 2080{ 2081 unsigned long flags; 2082 2083 spin_lock_irqsave(&edge_port->ep_lock, flags); 2084 2085 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2086 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2087 edge_port->shadow_mcr &= ~MCR_RTS; 2088 2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2090} 2091 2092static int restart_read(struct edgeport_port *edge_port) 2093{ 2094 struct urb *urb; 2095 int status = 0; 2096 unsigned long flags; 2097 2098 spin_lock_irqsave(&edge_port->ep_lock, flags); 2099 2100 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2101 urb = edge_port->port->read_urb; 2102 status = usb_submit_urb(urb, GFP_ATOMIC); 2103 } 2104 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2105 edge_port->shadow_mcr |= MCR_RTS; 2106 2107 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2108 2109 return status; 2110} 2111 2112static void change_port_settings(struct tty_struct *tty, 2113 struct edgeport_port *edge_port, struct ktermios *old_termios) 2114{ 2115 struct device *dev = &edge_port->port->dev; 2116 struct ump_uart_config *config; 2117 int baud; 2118 unsigned cflag; 2119 int status; 2120 int port_number = edge_port->port->port_number; 2121 2122 config = kmalloc (sizeof (*config), GFP_KERNEL); 2123 if (!config) { 2124 tty->termios = *old_termios; 2125 dev_err(dev, "%s - out of memory\n", __func__); 2126 return; 2127 } 2128 2129 cflag = tty->termios.c_cflag; 2130 2131 config->wFlags = 0; 2132 2133 /* These flags must be set */ 2134 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2135 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2136 config->bUartMode = (__u8)(edge_port->bUartMode); 2137 2138 switch (cflag & CSIZE) { 2139 case CS5: 2140 config->bDataBits = UMP_UART_CHAR5BITS; 2141 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2142 break; 2143 case CS6: 2144 config->bDataBits = UMP_UART_CHAR6BITS; 2145 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2146 break; 2147 case CS7: 2148 config->bDataBits = UMP_UART_CHAR7BITS; 2149 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2150 break; 2151 default: 2152 case CS8: 2153 config->bDataBits = UMP_UART_CHAR8BITS; 2154 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2155 break; 2156 } 2157 2158 if (cflag & PARENB) { 2159 if (cflag & PARODD) { 2160 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2161 config->bParity = UMP_UART_ODDPARITY; 2162 dev_dbg(dev, "%s - parity = odd\n", __func__); 2163 } else { 2164 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2165 config->bParity = UMP_UART_EVENPARITY; 2166 dev_dbg(dev, "%s - parity = even\n", __func__); 2167 } 2168 } else { 2169 config->bParity = UMP_UART_NOPARITY; 2170 dev_dbg(dev, "%s - parity = none\n", __func__); 2171 } 2172 2173 if (cflag & CSTOPB) { 2174 config->bStopBits = UMP_UART_STOPBIT2; 2175 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2176 } else { 2177 config->bStopBits = UMP_UART_STOPBIT1; 2178 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2179 } 2180 2181 /* figure out the flow control settings */ 2182 if (cflag & CRTSCTS) { 2183 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2184 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2185 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2186 } else { 2187 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2188 tty->hw_stopped = 0; 2189 restart_read(edge_port); 2190 } 2191 2192 /* if we are implementing XON/XOFF, set the start and stop 2193 character in the device */ 2194 config->cXon = START_CHAR(tty); 2195 config->cXoff = STOP_CHAR(tty); 2196 2197 /* if we are implementing INBOUND XON/XOFF */ 2198 if (I_IXOFF(tty)) { 2199 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2200 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2201 __func__, config->cXon, config->cXoff); 2202 } else 2203 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2204 2205 /* if we are implementing OUTBOUND XON/XOFF */ 2206 if (I_IXON(tty)) { 2207 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2208 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2209 __func__, config->cXon, config->cXoff); 2210 } else 2211 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2212 2213 tty->termios.c_cflag &= ~CMSPAR; 2214 2215 /* Round the baud rate */ 2216 baud = tty_get_baud_rate(tty); 2217 if (!baud) { 2218 /* pick a default, any default... */ 2219 baud = 9600; 2220 } else 2221 tty_encode_baud_rate(tty, baud, baud); 2222 2223 edge_port->baud_rate = baud; 2224 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2225 2226 /* FIXME: Recompute actual baud from divisor here */ 2227 2228 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2229 2230 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2231 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2232 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2233 dev_dbg(dev, "bParity: %d\n", config->bParity); 2234 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2235 dev_dbg(dev, "cXon: %d\n", config->cXon); 2236 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2237 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2238 2239 /* move the word values into big endian mode */ 2240 cpu_to_be16s(&config->wFlags); 2241 cpu_to_be16s(&config->wBaudRate); 2242 2243 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2244 (__u8)(UMPM_UART1_PORT + port_number), 2245 0, (__u8 *)config, sizeof(*config)); 2246 if (status) 2247 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2248 __func__, status); 2249 kfree(config); 2250} 2251 2252static void edge_set_termios(struct tty_struct *tty, 2253 struct usb_serial_port *port, struct ktermios *old_termios) 2254{ 2255 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2256 unsigned int cflag; 2257 2258 cflag = tty->termios.c_cflag; 2259 2260 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2261 tty->termios.c_cflag, tty->termios.c_iflag); 2262 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2263 old_termios->c_cflag, old_termios->c_iflag); 2264 2265 if (edge_port == NULL) 2266 return; 2267 /* change the port settings to the new ones specified */ 2268 change_port_settings(tty, edge_port, old_termios); 2269} 2270 2271static int edge_tiocmset(struct tty_struct *tty, 2272 unsigned int set, unsigned int clear) 2273{ 2274 struct usb_serial_port *port = tty->driver_data; 2275 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2276 unsigned int mcr; 2277 unsigned long flags; 2278 2279 spin_lock_irqsave(&edge_port->ep_lock, flags); 2280 mcr = edge_port->shadow_mcr; 2281 if (set & TIOCM_RTS) 2282 mcr |= MCR_RTS; 2283 if (set & TIOCM_DTR) 2284 mcr |= MCR_DTR; 2285 if (set & TIOCM_LOOP) 2286 mcr |= MCR_LOOPBACK; 2287 2288 if (clear & TIOCM_RTS) 2289 mcr &= ~MCR_RTS; 2290 if (clear & TIOCM_DTR) 2291 mcr &= ~MCR_DTR; 2292 if (clear & TIOCM_LOOP) 2293 mcr &= ~MCR_LOOPBACK; 2294 2295 edge_port->shadow_mcr = mcr; 2296 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2297 2298 restore_mcr(edge_port, mcr); 2299 return 0; 2300} 2301 2302static int edge_tiocmget(struct tty_struct *tty) 2303{ 2304 struct usb_serial_port *port = tty->driver_data; 2305 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2306 unsigned int result = 0; 2307 unsigned int msr; 2308 unsigned int mcr; 2309 unsigned long flags; 2310 2311 spin_lock_irqsave(&edge_port->ep_lock, flags); 2312 2313 msr = edge_port->shadow_msr; 2314 mcr = edge_port->shadow_mcr; 2315 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2316 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2317 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2318 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2319 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2320 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2321 2322 2323 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2324 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2325 2326 return result; 2327} 2328 2329static int get_serial_info(struct edgeport_port *edge_port, 2330 struct serial_struct __user *retinfo) 2331{ 2332 struct serial_struct tmp; 2333 unsigned cwait; 2334 2335 if (!retinfo) 2336 return -EFAULT; 2337 2338 cwait = edge_port->port->port.closing_wait; 2339 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2340 cwait = jiffies_to_msecs(cwait) / 10; 2341 2342 memset(&tmp, 0, sizeof(tmp)); 2343 2344 tmp.type = PORT_16550A; 2345 tmp.line = edge_port->port->minor; 2346 tmp.port = edge_port->port->port_number; 2347 tmp.irq = 0; 2348 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2349 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2350 tmp.baud_base = 9600; 2351 tmp.close_delay = 5*HZ; 2352 tmp.closing_wait = cwait; 2353 2354 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2355 return -EFAULT; 2356 return 0; 2357} 2358 2359static int edge_ioctl(struct tty_struct *tty, 2360 unsigned int cmd, unsigned long arg) 2361{ 2362 struct usb_serial_port *port = tty->driver_data; 2363 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2364 2365 dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); 2366 2367 switch (cmd) { 2368 case TIOCGSERIAL: 2369 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2370 return get_serial_info(edge_port, 2371 (struct serial_struct __user *) arg); 2372 } 2373 return -ENOIOCTLCMD; 2374} 2375 2376static void edge_break(struct tty_struct *tty, int break_state) 2377{ 2378 struct usb_serial_port *port = tty->driver_data; 2379 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2380 int status; 2381 int bv = 0; /* Off */ 2382 2383 if (break_state == -1) 2384 bv = 1; /* On */ 2385 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2386 if (status) 2387 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2388 __func__, status); 2389} 2390 2391static int edge_startup(struct usb_serial *serial) 2392{ 2393 struct edgeport_serial *edge_serial; 2394 int status; 2395 2396 /* create our private serial structure */ 2397 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2398 if (edge_serial == NULL) { 2399 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2400 return -ENOMEM; 2401 } 2402 mutex_init(&edge_serial->es_lock); 2403 edge_serial->serial = serial; 2404 usb_set_serial_data(serial, edge_serial); 2405 2406 status = download_fw(edge_serial); 2407 if (status) { 2408 kfree(edge_serial); 2409 return status; 2410 } 2411 2412 return 0; 2413} 2414 2415static void edge_disconnect(struct usb_serial *serial) 2416{ 2417} 2418 2419static void edge_release(struct usb_serial *serial) 2420{ 2421 kfree(usb_get_serial_data(serial)); 2422} 2423 2424static int edge_port_probe(struct usb_serial_port *port) 2425{ 2426 struct edgeport_port *edge_port; 2427 int ret; 2428 2429 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2430 if (!edge_port) 2431 return -ENOMEM; 2432 2433 spin_lock_init(&edge_port->ep_lock); 2434 edge_port->port = port; 2435 edge_port->edge_serial = usb_get_serial_data(port->serial); 2436 edge_port->bUartMode = default_uart_mode; 2437 2438 switch (port->port_number) { 2439 case 0: 2440 edge_port->uart_base = UMPMEM_BASE_UART1; 2441 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 2442 break; 2443 case 1: 2444 edge_port->uart_base = UMPMEM_BASE_UART2; 2445 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 2446 break; 2447 default: 2448 dev_err(&port->dev, "unknown port number\n"); 2449 ret = -ENODEV; 2450 goto err; 2451 } 2452 2453 dev_dbg(&port->dev, 2454 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 2455 __func__, port->port_number, edge_port->uart_base, 2456 edge_port->dma_address); 2457 2458 usb_set_serial_port_data(port, edge_port); 2459 2460 ret = edge_create_sysfs_attrs(port); 2461 if (ret) 2462 goto err; 2463 2464 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2465 port->port.drain_delay = 1; 2466 2467 return 0; 2468err: 2469 kfree(edge_port); 2470 2471 return ret; 2472} 2473 2474static int edge_port_remove(struct usb_serial_port *port) 2475{ 2476 struct edgeport_port *edge_port; 2477 2478 edge_port = usb_get_serial_port_data(port); 2479 edge_remove_sysfs_attrs(port); 2480 kfree(edge_port); 2481 2482 return 0; 2483} 2484 2485/* Sysfs Attributes */ 2486 2487static ssize_t show_uart_mode(struct device *dev, 2488 struct device_attribute *attr, char *buf) 2489{ 2490 struct usb_serial_port *port = to_usb_serial_port(dev); 2491 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2492 2493 return sprintf(buf, "%d\n", edge_port->bUartMode); 2494} 2495 2496static ssize_t store_uart_mode(struct device *dev, 2497 struct device_attribute *attr, const char *valbuf, size_t count) 2498{ 2499 struct usb_serial_port *port = to_usb_serial_port(dev); 2500 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2501 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2502 2503 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2504 2505 if (v < 256) 2506 edge_port->bUartMode = v; 2507 else 2508 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2509 2510 return count; 2511} 2512 2513static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2514 store_uart_mode); 2515 2516static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2517{ 2518 return device_create_file(&port->dev, &dev_attr_uart_mode); 2519} 2520 2521static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2522{ 2523 device_remove_file(&port->dev, &dev_attr_uart_mode); 2524 return 0; 2525} 2526 2527 2528static struct usb_serial_driver edgeport_1port_device = { 2529 .driver = { 2530 .owner = THIS_MODULE, 2531 .name = "edgeport_ti_1", 2532 }, 2533 .description = "Edgeport TI 1 port adapter", 2534 .id_table = edgeport_1port_id_table, 2535 .num_ports = 1, 2536 .open = edge_open, 2537 .close = edge_close, 2538 .throttle = edge_throttle, 2539 .unthrottle = edge_unthrottle, 2540 .attach = edge_startup, 2541 .disconnect = edge_disconnect, 2542 .release = edge_release, 2543 .port_probe = edge_port_probe, 2544 .port_remove = edge_port_remove, 2545 .ioctl = edge_ioctl, 2546 .set_termios = edge_set_termios, 2547 .tiocmget = edge_tiocmget, 2548 .tiocmset = edge_tiocmset, 2549 .tiocmiwait = usb_serial_generic_tiocmiwait, 2550 .get_icount = usb_serial_generic_get_icount, 2551 .write = edge_write, 2552 .write_room = edge_write_room, 2553 .chars_in_buffer = edge_chars_in_buffer, 2554 .tx_empty = edge_tx_empty, 2555 .break_ctl = edge_break, 2556 .read_int_callback = edge_interrupt_callback, 2557 .read_bulk_callback = edge_bulk_in_callback, 2558 .write_bulk_callback = edge_bulk_out_callback, 2559}; 2560 2561static struct usb_serial_driver edgeport_2port_device = { 2562 .driver = { 2563 .owner = THIS_MODULE, 2564 .name = "edgeport_ti_2", 2565 }, 2566 .description = "Edgeport TI 2 port adapter", 2567 .id_table = edgeport_2port_id_table, 2568 .num_ports = 2, 2569 .open = edge_open, 2570 .close = edge_close, 2571 .throttle = edge_throttle, 2572 .unthrottle = edge_unthrottle, 2573 .attach = edge_startup, 2574 .disconnect = edge_disconnect, 2575 .release = edge_release, 2576 .port_probe = edge_port_probe, 2577 .port_remove = edge_port_remove, 2578 .ioctl = edge_ioctl, 2579 .set_termios = edge_set_termios, 2580 .tiocmget = edge_tiocmget, 2581 .tiocmset = edge_tiocmset, 2582 .tiocmiwait = usb_serial_generic_tiocmiwait, 2583 .get_icount = usb_serial_generic_get_icount, 2584 .write = edge_write, 2585 .write_room = edge_write_room, 2586 .chars_in_buffer = edge_chars_in_buffer, 2587 .tx_empty = edge_tx_empty, 2588 .break_ctl = edge_break, 2589 .read_int_callback = edge_interrupt_callback, 2590 .read_bulk_callback = edge_bulk_in_callback, 2591 .write_bulk_callback = edge_bulk_out_callback, 2592}; 2593 2594static struct usb_serial_driver * const serial_drivers[] = { 2595 &edgeport_1port_device, &edgeport_2port_device, NULL 2596}; 2597 2598module_usb_serial_driver(serial_drivers, id_table_combined); 2599 2600MODULE_AUTHOR(DRIVER_AUTHOR); 2601MODULE_DESCRIPTION(DRIVER_DESC); 2602MODULE_LICENSE("GPL"); 2603MODULE_FIRMWARE("edgeport/down3.bin"); 2604 2605module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2606MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2607 2608module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2609MODULE_PARM_DESC(ignore_cpu_rev, 2610 "Ignore the cpu revision when connecting to a device"); 2611 2612module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2613MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2614