io_ti.c revision cf9a9d66bd29f32011d271695ffaa289489b3a7d
1/* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 14 * 15 * For questions or problems with this driver, contact Inside Out 16 * Networks technical support, or Peter Berger <pberger@brimson.com>, 17 * or Al Borchers <alborchers@steinerpoint.com>. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/jiffies.h> 22#include <linux/errno.h> 23#include <linux/init.h> 24#include <linux/slab.h> 25#include <linux/tty.h> 26#include <linux/tty_driver.h> 27#include <linux/tty_flip.h> 28#include <linux/module.h> 29#include <linux/spinlock.h> 30#include <linux/mutex.h> 31#include <linux/serial.h> 32#include <linux/kfifo.h> 33#include <linux/ioctl.h> 34#include <linux/firmware.h> 35#include <linux/uaccess.h> 36#include <linux/usb.h> 37#include <linux/usb/serial.h> 38 39#include "io_16654.h" 40#include "io_usbvend.h" 41#include "io_ti.h" 42 43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 44#define DRIVER_DESC "Edgeport USB Serial Driver" 45 46#define EPROM_PAGE_SIZE 64 47 48 49/* different hardware types */ 50#define HARDWARE_TYPE_930 0 51#define HARDWARE_TYPE_TIUMP 1 52 53/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 54#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 55#define TI_MODE_BOOT 1 /* Staying in boot mode */ 56#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 57#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 58 transitioning to download mode */ 59 60/* read urb state */ 61#define EDGE_READ_URB_RUNNING 0 62#define EDGE_READ_URB_STOPPING 1 63#define EDGE_READ_URB_STOPPED 2 64 65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 66 67#define EDGE_OUT_BUF_SIZE 1024 68 69 70/* Product information read from the Edgeport */ 71struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74} __attribute__((packed)); 75 76struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 struct edgeport_serial *edge_serial; 90 struct usb_serial_port *port; 91 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 92 spinlock_t ep_lock; 93 int ep_read_urb_state; 94 int ep_write_urb_in_use; 95 struct kfifo write_fifo; 96}; 97 98struct edgeport_serial { 99 struct product_info product_info; 100 u8 TI_I2C_Type; /* Type of I2C in UMP */ 101 u8 TiReadI2C; /* Set to TRUE if we have read the 102 I2c in Boot Mode */ 103 struct mutex es_lock; 104 int num_ports_open; 105 struct usb_serial *serial; 106}; 107 108 109/* Devices that this driver supports */ 110static const struct usb_device_id edgeport_1port_id_table[] = { 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 127 { } 128}; 129 130static const struct usb_device_id edgeport_2port_id_table[] = { 131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 143 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 147 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 149 { } 150}; 151 152/* Devices that this driver supports */ 153static const struct usb_device_id id_table_combined[] = { 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 187 { } 188}; 189 190MODULE_DEVICE_TABLE(usb, id_table_combined); 191 192static unsigned char OperationalMajorVersion; 193static unsigned char OperationalMinorVersion; 194static unsigned short OperationalBuildNumber; 195 196static int closing_wait = EDGE_CLOSING_WAIT; 197static bool ignore_cpu_rev; 198static int default_uart_mode; /* RS232 */ 199 200static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 201 int length); 202 203static void stop_read(struct edgeport_port *edge_port); 204static int restart_read(struct edgeport_port *edge_port); 205 206static void edge_set_termios(struct tty_struct *tty, 207 struct usb_serial_port *port, struct ktermios *old_termios); 208static void edge_send(struct tty_struct *tty); 209 210/* sysfs attributes */ 211static int edge_create_sysfs_attrs(struct usb_serial_port *port); 212static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 213 214 215static int ti_vread_sync(struct usb_device *dev, __u8 request, 216 __u16 value, __u16 index, u8 *data, int size) 217{ 218 int status; 219 220 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 221 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 222 value, index, data, size, 1000); 223 if (status < 0) 224 return status; 225 if (status != size) { 226 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 227 __func__, size, status); 228 return -ECOMM; 229 } 230 return 0; 231} 232 233static int ti_vsend_sync(struct usb_device *dev, __u8 request, 234 __u16 value, __u16 index, u8 *data, int size) 235{ 236 int status; 237 238 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 239 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 240 value, index, data, size, 1000); 241 if (status < 0) 242 return status; 243 if (status != size) { 244 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 245 __func__, size, status); 246 return -ECOMM; 247 } 248 return 0; 249} 250 251static int send_cmd(struct usb_device *dev, __u8 command, 252 __u8 moduleid, __u16 value, u8 *data, 253 int size) 254{ 255 return ti_vsend_sync(dev, command, value, moduleid, data, size); 256} 257 258/* clear tx/rx buffers and fifo in TI UMP */ 259static int purge_port(struct usb_serial_port *port, __u16 mask) 260{ 261 int port_number = port->number - port->serial->minor; 262 263 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 264 265 return send_cmd(port->serial->dev, 266 UMPC_PURGE_PORT, 267 (__u8)(UMPM_UART1_PORT + port_number), 268 mask, 269 NULL, 270 0); 271} 272 273/** 274 * read_download_mem - Read edgeport memory from TI chip 275 * @dev: usb device pointer 276 * @start_address: Device CPU address at which to read 277 * @length: Length of above data 278 * @address_type: Can read both XDATA and I2C 279 * @buffer: pointer to input data buffer 280 */ 281static int read_download_mem(struct usb_device *dev, int start_address, 282 int length, __u8 address_type, __u8 *buffer) 283{ 284 int status = 0; 285 __u8 read_length; 286 __be16 be_start_address; 287 288 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 289 290 /* Read in blocks of 64 bytes 291 * (TI firmware can't handle more than 64 byte reads) 292 */ 293 while (length) { 294 if (length > 64) 295 read_length = 64; 296 else 297 read_length = (__u8)length; 298 299 if (read_length > 1) { 300 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 301 } 302 be_start_address = cpu_to_be16(start_address); 303 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 304 (__u16)address_type, 305 (__force __u16)be_start_address, 306 buffer, read_length); 307 308 if (status) { 309 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 310 return status; 311 } 312 313 if (read_length > 1) 314 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 315 316 /* Update pointers/length */ 317 start_address += read_length; 318 buffer += read_length; 319 length -= read_length; 320 } 321 322 return status; 323} 324 325static int read_ram(struct usb_device *dev, int start_address, 326 int length, __u8 *buffer) 327{ 328 return read_download_mem(dev, start_address, length, 329 DTK_ADDR_SPACE_XDATA, buffer); 330} 331 332/* Read edgeport memory to a given block */ 333static int read_boot_mem(struct edgeport_serial *serial, 334 int start_address, int length, __u8 *buffer) 335{ 336 int status = 0; 337 int i; 338 339 for (i = 0; i < length; i++) { 340 status = ti_vread_sync(serial->serial->dev, 341 UMPC_MEMORY_READ, serial->TI_I2C_Type, 342 (__u16)(start_address+i), &buffer[i], 0x01); 343 if (status) { 344 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 345 return status; 346 } 347 } 348 349 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 350 __func__, start_address, length); 351 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 352 353 serial->TiReadI2C = 1; 354 355 return status; 356} 357 358/* Write given block to TI EPROM memory */ 359static int write_boot_mem(struct edgeport_serial *serial, 360 int start_address, int length, __u8 *buffer) 361{ 362 int status = 0; 363 int i; 364 u8 *temp; 365 366 /* Must do a read before write */ 367 if (!serial->TiReadI2C) { 368 temp = kmalloc(1, GFP_KERNEL); 369 if (!temp) { 370 dev_err(&serial->serial->dev->dev, 371 "%s - out of memory\n", __func__); 372 return -ENOMEM; 373 } 374 status = read_boot_mem(serial, 0, 1, temp); 375 kfree(temp); 376 if (status) 377 return status; 378 } 379 380 for (i = 0; i < length; ++i) { 381 status = ti_vsend_sync(serial->serial->dev, 382 UMPC_MEMORY_WRITE, buffer[i], 383 (__u16)(i + start_address), NULL, 0); 384 if (status) 385 return status; 386 } 387 388 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 389 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 390 391 return status; 392} 393 394 395/* Write edgeport I2C memory to TI chip */ 396static int write_i2c_mem(struct edgeport_serial *serial, 397 int start_address, int length, __u8 address_type, __u8 *buffer) 398{ 399 struct device *dev = &serial->serial->dev->dev; 400 int status = 0; 401 int write_length; 402 __be16 be_start_address; 403 404 /* We can only send a maximum of 1 aligned byte page at a time */ 405 406 /* calculate the number of bytes left in the first page */ 407 write_length = EPROM_PAGE_SIZE - 408 (start_address & (EPROM_PAGE_SIZE - 1)); 409 410 if (write_length > length) 411 write_length = length; 412 413 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 414 __func__, start_address, write_length); 415 usb_serial_debug_data(dev, __func__, write_length, buffer); 416 417 /* Write first page */ 418 be_start_address = cpu_to_be16(start_address); 419 status = ti_vsend_sync(serial->serial->dev, 420 UMPC_MEMORY_WRITE, (__u16)address_type, 421 (__force __u16)be_start_address, 422 buffer, write_length); 423 if (status) { 424 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 425 return status; 426 } 427 428 length -= write_length; 429 start_address += write_length; 430 buffer += write_length; 431 432 /* We should be aligned now -- can write 433 max page size bytes at a time */ 434 while (length) { 435 if (length > EPROM_PAGE_SIZE) 436 write_length = EPROM_PAGE_SIZE; 437 else 438 write_length = length; 439 440 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 441 __func__, start_address, write_length); 442 usb_serial_debug_data(dev, __func__, write_length, buffer); 443 444 /* Write next page */ 445 be_start_address = cpu_to_be16(start_address); 446 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 447 (__u16)address_type, 448 (__force __u16)be_start_address, 449 buffer, write_length); 450 if (status) { 451 dev_err(dev, "%s - ERROR %d\n", __func__, status); 452 return status; 453 } 454 455 length -= write_length; 456 start_address += write_length; 457 buffer += write_length; 458 } 459 return status; 460} 461 462/* Examine the UMP DMA registers and LSR 463 * 464 * Check the MSBit of the X and Y DMA byte count registers. 465 * A zero in this bit indicates that the TX DMA buffers are empty 466 * then check the TX Empty bit in the UART. 467 */ 468static int tx_active(struct edgeport_port *port) 469{ 470 int status; 471 struct out_endpoint_desc_block *oedb; 472 __u8 *lsr; 473 int bytes_left = 0; 474 475 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 476 if (!oedb) { 477 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 478 return -ENOMEM; 479 } 480 481 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 482 as not all platforms can do DMA 483 from stack */ 484 if (!lsr) { 485 kfree(oedb); 486 return -ENOMEM; 487 } 488 /* Read the DMA Count Registers */ 489 status = read_ram(port->port->serial->dev, port->dma_address, 490 sizeof(*oedb), (void *)oedb); 491 if (status) 492 goto exit_is_tx_active; 493 494 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 495 496 /* and the LSR */ 497 status = read_ram(port->port->serial->dev, 498 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 499 500 if (status) 501 goto exit_is_tx_active; 502 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 503 504 /* If either buffer has data or we are transmitting then return TRUE */ 505 if ((oedb->XByteCount & 0x80) != 0) 506 bytes_left += 64; 507 508 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 509 bytes_left += 1; 510 511 /* We return Not Active if we get any kind of error */ 512exit_is_tx_active: 513 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 514 515 kfree(lsr); 516 kfree(oedb); 517 return bytes_left; 518} 519 520static int choose_config(struct usb_device *dev) 521{ 522 /* 523 * There may be multiple configurations on this device, in which case 524 * we would need to read and parse all of them to find out which one 525 * we want. However, we just support one config at this point, 526 * configuration # 1, which is Config Descriptor 0. 527 */ 528 529 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 530 __func__, dev->config->desc.bNumInterfaces); 531 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 532 __func__, dev->config->desc.bMaxPower * 2); 533 534 if (dev->config->desc.bNumInterfaces != 1) { 535 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 536 return -ENODEV; 537 } 538 539 return 0; 540} 541 542static int read_rom(struct edgeport_serial *serial, 543 int start_address, int length, __u8 *buffer) 544{ 545 int status; 546 547 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 548 status = read_download_mem(serial->serial->dev, 549 start_address, 550 length, 551 serial->TI_I2C_Type, 552 buffer); 553 } else { 554 status = read_boot_mem(serial, start_address, length, 555 buffer); 556 } 557 return status; 558} 559 560static int write_rom(struct edgeport_serial *serial, int start_address, 561 int length, __u8 *buffer) 562{ 563 if (serial->product_info.TiMode == TI_MODE_BOOT) 564 return write_boot_mem(serial, start_address, length, 565 buffer); 566 567 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 568 return write_i2c_mem(serial, start_address, length, 569 serial->TI_I2C_Type, buffer); 570 return -EINVAL; 571} 572 573 574 575/* Read a descriptor header from I2C based on type */ 576static int get_descriptor_addr(struct edgeport_serial *serial, 577 int desc_type, struct ti_i2c_desc *rom_desc) 578{ 579 int start_address; 580 int status; 581 582 /* Search for requested descriptor in I2C */ 583 start_address = 2; 584 do { 585 status = read_rom(serial, 586 start_address, 587 sizeof(struct ti_i2c_desc), 588 (__u8 *)rom_desc); 589 if (status) 590 return 0; 591 592 if (rom_desc->Type == desc_type) 593 return start_address; 594 595 start_address = start_address + sizeof(struct ti_i2c_desc) 596 + rom_desc->Size; 597 598 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 599 600 return 0; 601} 602 603/* Validate descriptor checksum */ 604static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 605{ 606 __u16 i; 607 __u8 cs = 0; 608 609 for (i = 0; i < rom_desc->Size; i++) 610 cs = (__u8)(cs + buffer[i]); 611 612 if (cs != rom_desc->CheckSum) { 613 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 614 return -EINVAL; 615 } 616 return 0; 617} 618 619/* Make sure that the I2C image is good */ 620static int check_i2c_image(struct edgeport_serial *serial) 621{ 622 struct device *dev = &serial->serial->dev->dev; 623 int status = 0; 624 struct ti_i2c_desc *rom_desc; 625 int start_address = 2; 626 __u8 *buffer; 627 __u16 ttype; 628 629 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 630 if (!rom_desc) { 631 dev_err(dev, "%s - out of memory\n", __func__); 632 return -ENOMEM; 633 } 634 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 635 if (!buffer) { 636 dev_err(dev, "%s - out of memory when allocating buffer\n", 637 __func__); 638 kfree(rom_desc); 639 return -ENOMEM; 640 } 641 642 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 643 status = read_rom(serial, 0, 1, buffer); 644 if (status) 645 goto out; 646 647 if (*buffer != UMP5152 && *buffer != UMP3410) { 648 dev_err(dev, "%s - invalid buffer signature\n", __func__); 649 status = -ENODEV; 650 goto out; 651 } 652 653 do { 654 /* Validate the I2C */ 655 status = read_rom(serial, 656 start_address, 657 sizeof(struct ti_i2c_desc), 658 (__u8 *)rom_desc); 659 if (status) 660 break; 661 662 if ((start_address + sizeof(struct ti_i2c_desc) + 663 rom_desc->Size) > TI_MAX_I2C_SIZE) { 664 status = -ENODEV; 665 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 666 break; 667 } 668 669 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 670 671 /* Skip type 2 record */ 672 ttype = rom_desc->Type & 0x0f; 673 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 674 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 675 /* Read the descriptor data */ 676 status = read_rom(serial, start_address + 677 sizeof(struct ti_i2c_desc), 678 rom_desc->Size, buffer); 679 if (status) 680 break; 681 682 status = valid_csum(rom_desc, buffer); 683 if (status) 684 break; 685 } 686 start_address = start_address + sizeof(struct ti_i2c_desc) + 687 rom_desc->Size; 688 689 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 690 (start_address < TI_MAX_I2C_SIZE)); 691 692 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 693 (start_address > TI_MAX_I2C_SIZE)) 694 status = -ENODEV; 695 696out: 697 kfree(buffer); 698 kfree(rom_desc); 699 return status; 700} 701 702static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 703{ 704 int status; 705 int start_address; 706 struct ti_i2c_desc *rom_desc; 707 struct edge_ti_manuf_descriptor *desc; 708 struct device *dev = &serial->serial->dev->dev; 709 710 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 711 if (!rom_desc) { 712 dev_err(dev, "%s - out of memory\n", __func__); 713 return -ENOMEM; 714 } 715 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 716 rom_desc); 717 718 if (!start_address) { 719 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 720 status = -ENODEV; 721 goto exit; 722 } 723 724 /* Read the descriptor data */ 725 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 726 rom_desc->Size, buffer); 727 if (status) 728 goto exit; 729 730 status = valid_csum(rom_desc, buffer); 731 732 desc = (struct edge_ti_manuf_descriptor *)buffer; 733 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 734 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 735 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 736 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 737 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 738 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 739 740exit: 741 kfree(rom_desc); 742 return status; 743} 744 745/* Build firmware header used for firmware update */ 746static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 747{ 748 __u8 *buffer; 749 int buffer_size; 750 int i; 751 int err; 752 __u8 cs = 0; 753 struct ti_i2c_desc *i2c_header; 754 struct ti_i2c_image_header *img_header; 755 struct ti_i2c_firmware_rec *firmware_rec; 756 const struct firmware *fw; 757 const char *fw_name = "edgeport/down3.bin"; 758 759 /* In order to update the I2C firmware we must change the type 2 record 760 * to type 0xF2. This will force the UMP to come up in Boot Mode. 761 * Then while in boot mode, the driver will download the latest 762 * firmware (padded to 15.5k) into the UMP ram. And finally when the 763 * device comes back up in download mode the driver will cause the new 764 * firmware to be copied from the UMP Ram to I2C and the firmware will 765 * update the record type from 0xf2 to 0x02. 766 */ 767 768 /* Allocate a 15.5k buffer + 2 bytes for version number 769 * (Firmware Record) */ 770 buffer_size = (((1024 * 16) - 512 ) + 771 sizeof(struct ti_i2c_firmware_rec)); 772 773 buffer = kmalloc(buffer_size, GFP_KERNEL); 774 if (!buffer) { 775 dev_err(dev, "%s - out of memory\n", __func__); 776 return -ENOMEM; 777 } 778 779 // Set entire image of 0xffs 780 memset(buffer, 0xff, buffer_size); 781 782 err = request_firmware(&fw, fw_name, dev); 783 if (err) { 784 dev_err(dev, "Failed to load image \"%s\" err %d\n", 785 fw_name, err); 786 kfree(buffer); 787 return err; 788 } 789 790 /* Save Download Version Number */ 791 OperationalMajorVersion = fw->data[0]; 792 OperationalMinorVersion = fw->data[1]; 793 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 794 795 /* Copy version number into firmware record */ 796 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 797 798 firmware_rec->Ver_Major = OperationalMajorVersion; 799 firmware_rec->Ver_Minor = OperationalMinorVersion; 800 801 /* Pointer to fw_down memory image */ 802 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 803 804 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 805 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 806 le16_to_cpu(img_header->Length)); 807 808 release_firmware(fw); 809 810 for (i=0; i < buffer_size; i++) { 811 cs = (__u8)(cs + buffer[i]); 812 } 813 814 kfree(buffer); 815 816 /* Build new header */ 817 i2c_header = (struct ti_i2c_desc *)header; 818 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 819 820 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 821 i2c_header->Size = (__u16)buffer_size; 822 i2c_header->CheckSum = cs; 823 firmware_rec->Ver_Major = OperationalMajorVersion; 824 firmware_rec->Ver_Minor = OperationalMinorVersion; 825 826 return 0; 827} 828 829/* Try to figure out what type of I2c we have */ 830static int i2c_type_bootmode(struct edgeport_serial *serial) 831{ 832 struct device *dev = &serial->serial->dev->dev; 833 int status; 834 u8 *data; 835 836 data = kmalloc(1, GFP_KERNEL); 837 if (!data) { 838 dev_err(dev, "%s - out of memory\n", __func__); 839 return -ENOMEM; 840 } 841 842 /* Try to read type 2 */ 843 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 844 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 845 if (status) 846 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 847 else 848 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 849 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 850 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 851 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 852 goto out; 853 } 854 855 /* Try to read type 3 */ 856 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 857 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 858 if (status) 859 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 860 else 861 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 862 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 863 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 864 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 865 goto out; 866 } 867 868 dev_dbg(dev, "%s - Unknown\n", __func__); 869 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 870 status = -ENODEV; 871out: 872 kfree(data); 873 return status; 874} 875 876static int bulk_xfer(struct usb_serial *serial, void *buffer, 877 int length, int *num_sent) 878{ 879 int status; 880 881 status = usb_bulk_msg(serial->dev, 882 usb_sndbulkpipe(serial->dev, 883 serial->port[0]->bulk_out_endpointAddress), 884 buffer, length, num_sent, 1000); 885 return status; 886} 887 888/* Download given firmware image to the device (IN BOOT MODE) */ 889static int download_code(struct edgeport_serial *serial, __u8 *image, 890 int image_length) 891{ 892 int status = 0; 893 int pos; 894 int transfer; 895 int done; 896 897 /* Transfer firmware image */ 898 for (pos = 0; pos < image_length; ) { 899 /* Read the next buffer from file */ 900 transfer = image_length - pos; 901 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 902 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 903 904 /* Transfer data */ 905 status = bulk_xfer(serial->serial, &image[pos], 906 transfer, &done); 907 if (status) 908 break; 909 /* Advance buffer pointer */ 910 pos += done; 911 } 912 913 return status; 914} 915 916/* FIXME!!! */ 917static int config_boot_dev(struct usb_device *dev) 918{ 919 return 0; 920} 921 922static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 923{ 924 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 925} 926 927/** 928 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 929 * 930 * This routine downloads the main operating code into the TI5052, using the 931 * boot code already burned into E2PROM or ROM. 932 */ 933static int download_fw(struct edgeport_serial *serial) 934{ 935 struct device *dev = &serial->serial->dev->dev; 936 int status = 0; 937 int start_address; 938 struct edge_ti_manuf_descriptor *ti_manuf_desc; 939 struct usb_interface_descriptor *interface; 940 int download_cur_ver; 941 int download_new_ver; 942 943 /* This routine is entered by both the BOOT mode and the Download mode 944 * We can determine which code is running by the reading the config 945 * descriptor and if we have only one bulk pipe it is in boot mode 946 */ 947 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 948 949 /* Default to type 2 i2c */ 950 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 951 952 status = choose_config(serial->serial->dev); 953 if (status) 954 return status; 955 956 interface = &serial->serial->interface->cur_altsetting->desc; 957 if (!interface) { 958 dev_err(dev, "%s - no interface set, error!\n", __func__); 959 return -ENODEV; 960 } 961 962 /* 963 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 964 * if we have more than one endpoint we are definitely in download 965 * mode 966 */ 967 if (interface->bNumEndpoints > 1) 968 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 969 else 970 /* Otherwise we will remain in configuring mode */ 971 serial->product_info.TiMode = TI_MODE_CONFIGURING; 972 973 /********************************************************************/ 974 /* Download Mode */ 975 /********************************************************************/ 976 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 977 struct ti_i2c_desc *rom_desc; 978 979 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 980 981 status = check_i2c_image(serial); 982 if (status) { 983 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 984 return status; 985 } 986 987 /* Validate Hardware version number 988 * Read Manufacturing Descriptor from TI Based Edgeport 989 */ 990 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 991 if (!ti_manuf_desc) { 992 dev_err(dev, "%s - out of memory.\n", __func__); 993 return -ENOMEM; 994 } 995 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 996 if (status) { 997 kfree(ti_manuf_desc); 998 return status; 999 } 1000 1001 /* Check version number of ION descriptor */ 1002 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1003 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1004 __func__, ti_cpu_rev(ti_manuf_desc)); 1005 kfree(ti_manuf_desc); 1006 return -EINVAL; 1007 } 1008 1009 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1010 if (!rom_desc) { 1011 dev_err(dev, "%s - out of memory.\n", __func__); 1012 kfree(ti_manuf_desc); 1013 return -ENOMEM; 1014 } 1015 1016 /* Search for type 2 record (firmware record) */ 1017 start_address = get_descriptor_addr(serial, 1018 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1019 if (start_address != 0) { 1020 struct ti_i2c_firmware_rec *firmware_version; 1021 u8 *record; 1022 1023 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1024 1025 firmware_version = kmalloc(sizeof(*firmware_version), 1026 GFP_KERNEL); 1027 if (!firmware_version) { 1028 dev_err(dev, "%s - out of memory.\n", __func__); 1029 kfree(rom_desc); 1030 kfree(ti_manuf_desc); 1031 return -ENOMEM; 1032 } 1033 1034 /* Validate version number 1035 * Read the descriptor data 1036 */ 1037 status = read_rom(serial, start_address + 1038 sizeof(struct ti_i2c_desc), 1039 sizeof(struct ti_i2c_firmware_rec), 1040 (__u8 *)firmware_version); 1041 if (status) { 1042 kfree(firmware_version); 1043 kfree(rom_desc); 1044 kfree(ti_manuf_desc); 1045 return status; 1046 } 1047 1048 /* Check version number of download with current 1049 version in I2c */ 1050 download_cur_ver = (firmware_version->Ver_Major << 8) + 1051 (firmware_version->Ver_Minor); 1052 download_new_ver = (OperationalMajorVersion << 8) + 1053 (OperationalMinorVersion); 1054 1055 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1056 __func__, firmware_version->Ver_Major, 1057 firmware_version->Ver_Minor, 1058 OperationalMajorVersion, 1059 OperationalMinorVersion); 1060 1061 /* Check if we have an old version in the I2C and 1062 update if necessary */ 1063 if (download_cur_ver < download_new_ver) { 1064 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1065 __func__, 1066 firmware_version->Ver_Major, 1067 firmware_version->Ver_Minor, 1068 OperationalMajorVersion, 1069 OperationalMinorVersion); 1070 1071 record = kmalloc(1, GFP_KERNEL); 1072 if (!record) { 1073 dev_err(dev, "%s - out of memory.\n", 1074 __func__); 1075 kfree(firmware_version); 1076 kfree(rom_desc); 1077 kfree(ti_manuf_desc); 1078 return -ENOMEM; 1079 } 1080 /* In order to update the I2C firmware we must 1081 * change the type 2 record to type 0xF2. This 1082 * will force the UMP to come up in Boot Mode. 1083 * Then while in boot mode, the driver will 1084 * download the latest firmware (padded to 1085 * 15.5k) into the UMP ram. Finally when the 1086 * device comes back up in download mode the 1087 * driver will cause the new firmware to be 1088 * copied from the UMP Ram to I2C and the 1089 * firmware will update the record type from 1090 * 0xf2 to 0x02. 1091 */ 1092 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1093 1094 /* Change the I2C Firmware record type to 1095 0xf2 to trigger an update */ 1096 status = write_rom(serial, start_address, 1097 sizeof(*record), record); 1098 if (status) { 1099 kfree(record); 1100 kfree(firmware_version); 1101 kfree(rom_desc); 1102 kfree(ti_manuf_desc); 1103 return status; 1104 } 1105 1106 /* verify the write -- must do this in order 1107 * for write to complete before we do the 1108 * hardware reset 1109 */ 1110 status = read_rom(serial, 1111 start_address, 1112 sizeof(*record), 1113 record); 1114 if (status) { 1115 kfree(record); 1116 kfree(firmware_version); 1117 kfree(rom_desc); 1118 kfree(ti_manuf_desc); 1119 return status; 1120 } 1121 1122 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1123 dev_err(dev, "%s - error resetting device\n", __func__); 1124 kfree(record); 1125 kfree(firmware_version); 1126 kfree(rom_desc); 1127 kfree(ti_manuf_desc); 1128 return -ENODEV; 1129 } 1130 1131 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1132 1133 /* Reset UMP -- Back to BOOT MODE */ 1134 status = ti_vsend_sync(serial->serial->dev, 1135 UMPC_HARDWARE_RESET, 1136 0, 0, NULL, 0); 1137 1138 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1139 1140 /* return an error on purpose. */ 1141 kfree(record); 1142 kfree(firmware_version); 1143 kfree(rom_desc); 1144 kfree(ti_manuf_desc); 1145 return -ENODEV; 1146 } 1147 kfree(firmware_version); 1148 } 1149 /* Search for type 0xF2 record (firmware blank record) */ 1150 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1151#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1152 sizeof(struct ti_i2c_firmware_rec)) 1153 __u8 *header; 1154 __u8 *vheader; 1155 1156 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1157 if (!header) { 1158 dev_err(dev, "%s - out of memory.\n", __func__); 1159 kfree(rom_desc); 1160 kfree(ti_manuf_desc); 1161 return -ENOMEM; 1162 } 1163 1164 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1165 if (!vheader) { 1166 dev_err(dev, "%s - out of memory.\n", __func__); 1167 kfree(header); 1168 kfree(rom_desc); 1169 kfree(ti_manuf_desc); 1170 return -ENOMEM; 1171 } 1172 1173 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1174 1175 /* 1176 * In order to update the I2C firmware we must change 1177 * the type 2 record to type 0xF2. This will force the 1178 * UMP to come up in Boot Mode. Then while in boot 1179 * mode, the driver will download the latest firmware 1180 * (padded to 15.5k) into the UMP ram. Finally when the 1181 * device comes back up in download mode the driver 1182 * will cause the new firmware to be copied from the 1183 * UMP Ram to I2C and the firmware will update the 1184 * record type from 0xf2 to 0x02. 1185 */ 1186 status = build_i2c_fw_hdr(header, dev); 1187 if (status) { 1188 kfree(vheader); 1189 kfree(header); 1190 kfree(rom_desc); 1191 kfree(ti_manuf_desc); 1192 return -EINVAL; 1193 } 1194 1195 /* Update I2C with type 0xf2 record with correct 1196 size and checksum */ 1197 status = write_rom(serial, 1198 start_address, 1199 HEADER_SIZE, 1200 header); 1201 if (status) { 1202 kfree(vheader); 1203 kfree(header); 1204 kfree(rom_desc); 1205 kfree(ti_manuf_desc); 1206 return -EINVAL; 1207 } 1208 1209 /* verify the write -- must do this in order for 1210 write to complete before we do the hardware reset */ 1211 status = read_rom(serial, start_address, 1212 HEADER_SIZE, vheader); 1213 1214 if (status) { 1215 dev_dbg(dev, "%s - can't read header back\n", __func__); 1216 kfree(vheader); 1217 kfree(header); 1218 kfree(rom_desc); 1219 kfree(ti_manuf_desc); 1220 return status; 1221 } 1222 if (memcmp(vheader, header, HEADER_SIZE)) { 1223 dev_dbg(dev, "%s - write download record failed\n", __func__); 1224 kfree(vheader); 1225 kfree(header); 1226 kfree(rom_desc); 1227 kfree(ti_manuf_desc); 1228 return -EINVAL; 1229 } 1230 1231 kfree(vheader); 1232 kfree(header); 1233 1234 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1235 1236 /* Tell firmware to copy download image into I2C */ 1237 status = ti_vsend_sync(serial->serial->dev, 1238 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1239 1240 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1241 if (status) { 1242 dev_err(dev, 1243 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1244 __func__); 1245 kfree(rom_desc); 1246 kfree(ti_manuf_desc); 1247 return status; 1248 } 1249 } 1250 1251 // The device is running the download code 1252 kfree(rom_desc); 1253 kfree(ti_manuf_desc); 1254 return 0; 1255 } 1256 1257 /********************************************************************/ 1258 /* Boot Mode */ 1259 /********************************************************************/ 1260 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1261 1262 /* Configure the TI device so we can use the BULK pipes for download */ 1263 status = config_boot_dev(serial->serial->dev); 1264 if (status) 1265 return status; 1266 1267 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1268 != USB_VENDOR_ID_ION) { 1269 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1270 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1271 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1272 goto stayinbootmode; 1273 } 1274 1275 /* We have an ION device (I2c Must be programmed) 1276 Determine I2C image type */ 1277 if (i2c_type_bootmode(serial)) 1278 goto stayinbootmode; 1279 1280 /* Check for ION Vendor ID and that the I2C is valid */ 1281 if (!check_i2c_image(serial)) { 1282 struct ti_i2c_image_header *header; 1283 int i; 1284 __u8 cs = 0; 1285 __u8 *buffer; 1286 int buffer_size; 1287 int err; 1288 const struct firmware *fw; 1289 const char *fw_name = "edgeport/down3.bin"; 1290 1291 /* Validate Hardware version number 1292 * Read Manufacturing Descriptor from TI Based Edgeport 1293 */ 1294 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1295 if (!ti_manuf_desc) { 1296 dev_err(dev, "%s - out of memory.\n", __func__); 1297 return -ENOMEM; 1298 } 1299 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1300 if (status) { 1301 kfree(ti_manuf_desc); 1302 goto stayinbootmode; 1303 } 1304 1305 /* Check for version 2 */ 1306 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1307 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1308 __func__, ti_cpu_rev(ti_manuf_desc)); 1309 kfree(ti_manuf_desc); 1310 goto stayinbootmode; 1311 } 1312 1313 kfree(ti_manuf_desc); 1314 1315 /* 1316 * In order to update the I2C firmware we must change the type 1317 * 2 record to type 0xF2. This will force the UMP to come up 1318 * in Boot Mode. Then while in boot mode, the driver will 1319 * download the latest firmware (padded to 15.5k) into the 1320 * UMP ram. Finally when the device comes back up in download 1321 * mode the driver will cause the new firmware to be copied 1322 * from the UMP Ram to I2C and the firmware will update the 1323 * record type from 0xf2 to 0x02. 1324 * 1325 * Do we really have to copy the whole firmware image, 1326 * or could we do this in place! 1327 */ 1328 1329 /* Allocate a 15.5k buffer + 3 byte header */ 1330 buffer_size = (((1024 * 16) - 512) + 1331 sizeof(struct ti_i2c_image_header)); 1332 buffer = kmalloc(buffer_size, GFP_KERNEL); 1333 if (!buffer) { 1334 dev_err(dev, "%s - out of memory\n", __func__); 1335 return -ENOMEM; 1336 } 1337 1338 /* Initialize the buffer to 0xff (pad the buffer) */ 1339 memset(buffer, 0xff, buffer_size); 1340 1341 err = request_firmware(&fw, fw_name, dev); 1342 if (err) { 1343 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1344 fw_name, err); 1345 kfree(buffer); 1346 return err; 1347 } 1348 memcpy(buffer, &fw->data[4], fw->size - 4); 1349 release_firmware(fw); 1350 1351 for (i = sizeof(struct ti_i2c_image_header); 1352 i < buffer_size; i++) { 1353 cs = (__u8)(cs + buffer[i]); 1354 } 1355 1356 header = (struct ti_i2c_image_header *)buffer; 1357 1358 /* update length and checksum after padding */ 1359 header->Length = cpu_to_le16((__u16)(buffer_size - 1360 sizeof(struct ti_i2c_image_header))); 1361 header->CheckSum = cs; 1362 1363 /* Download the operational code */ 1364 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1365 status = download_code(serial, buffer, buffer_size); 1366 1367 kfree(buffer); 1368 1369 if (status) { 1370 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1371 return status; 1372 } 1373 1374 /* Device will reboot */ 1375 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1376 1377 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1378 1379 /* return an error on purpose */ 1380 return -ENODEV; 1381 } 1382 1383stayinbootmode: 1384 /* Eprom is invalid or blank stay in boot mode */ 1385 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1386 serial->product_info.TiMode = TI_MODE_BOOT; 1387 1388 return 0; 1389} 1390 1391 1392static int ti_do_config(struct edgeport_port *port, int feature, int on) 1393{ 1394 int port_number = port->port->number - port->port->serial->minor; 1395 on = !!on; /* 1 or 0 not bitmask */ 1396 return send_cmd(port->port->serial->dev, 1397 feature, (__u8)(UMPM_UART1_PORT + port_number), 1398 on, NULL, 0); 1399} 1400 1401 1402static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1403{ 1404 int status = 0; 1405 1406 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1407 1408 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1409 if (status) 1410 return status; 1411 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1412 if (status) 1413 return status; 1414 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1415} 1416 1417/* Convert TI LSR to standard UART flags */ 1418static __u8 map_line_status(__u8 ti_lsr) 1419{ 1420 __u8 lsr = 0; 1421 1422#define MAP_FLAG(flagUmp, flagUart) \ 1423 if (ti_lsr & flagUmp) \ 1424 lsr |= flagUart; 1425 1426 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1427 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1428 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1429 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1430 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1431 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1432 1433#undef MAP_FLAG 1434 1435 return lsr; 1436} 1437 1438static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1439{ 1440 struct async_icount *icount; 1441 struct tty_struct *tty; 1442 1443 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1444 1445 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1446 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1447 icount = &edge_port->port->icount; 1448 1449 /* update input line counters */ 1450 if (msr & EDGEPORT_MSR_DELTA_CTS) 1451 icount->cts++; 1452 if (msr & EDGEPORT_MSR_DELTA_DSR) 1453 icount->dsr++; 1454 if (msr & EDGEPORT_MSR_DELTA_CD) 1455 icount->dcd++; 1456 if (msr & EDGEPORT_MSR_DELTA_RI) 1457 icount->rng++; 1458 wake_up_interruptible(&edge_port->port->delta_msr_wait); 1459 } 1460 1461 /* Save the new modem status */ 1462 edge_port->shadow_msr = msr & 0xf0; 1463 1464 tty = tty_port_tty_get(&edge_port->port->port); 1465 /* handle CTS flow control */ 1466 if (tty && C_CRTSCTS(tty)) { 1467 if (msr & EDGEPORT_MSR_CTS) { 1468 tty->hw_stopped = 0; 1469 tty_wakeup(tty); 1470 } else { 1471 tty->hw_stopped = 1; 1472 } 1473 } 1474 tty_kref_put(tty); 1475} 1476 1477static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1478 __u8 lsr, __u8 data) 1479{ 1480 struct async_icount *icount; 1481 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1482 LSR_FRM_ERR | LSR_BREAK)); 1483 1484 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1485 1486 edge_port->shadow_lsr = lsr; 1487 1488 if (new_lsr & LSR_BREAK) 1489 /* 1490 * Parity and Framing errors only count if they 1491 * occur exclusive of a break being received. 1492 */ 1493 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1494 1495 /* Place LSR data byte into Rx buffer */ 1496 if (lsr_data) 1497 edge_tty_recv(edge_port->port, &data, 1); 1498 1499 /* update input line counters */ 1500 icount = &edge_port->port->icount; 1501 if (new_lsr & LSR_BREAK) 1502 icount->brk++; 1503 if (new_lsr & LSR_OVER_ERR) 1504 icount->overrun++; 1505 if (new_lsr & LSR_PAR_ERR) 1506 icount->parity++; 1507 if (new_lsr & LSR_FRM_ERR) 1508 icount->frame++; 1509} 1510 1511 1512static void edge_interrupt_callback(struct urb *urb) 1513{ 1514 struct edgeport_serial *edge_serial = urb->context; 1515 struct usb_serial_port *port; 1516 struct edgeport_port *edge_port; 1517 struct device *dev; 1518 unsigned char *data = urb->transfer_buffer; 1519 int length = urb->actual_length; 1520 int port_number; 1521 int function; 1522 int retval; 1523 __u8 lsr; 1524 __u8 msr; 1525 int status = urb->status; 1526 1527 switch (status) { 1528 case 0: 1529 /* success */ 1530 break; 1531 case -ECONNRESET: 1532 case -ENOENT: 1533 case -ESHUTDOWN: 1534 /* this urb is terminated, clean up */ 1535 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1536 __func__, status); 1537 return; 1538 default: 1539 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1540 "%d\n", __func__, status); 1541 goto exit; 1542 } 1543 1544 if (!length) { 1545 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1546 goto exit; 1547 } 1548 1549 dev = &edge_serial->serial->dev->dev; 1550 usb_serial_debug_data(dev, __func__, length, data); 1551 1552 if (length != 2) { 1553 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1554 goto exit; 1555 } 1556 1557 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1558 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1559 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1560 port_number, function, data[1]); 1561 port = edge_serial->serial->port[port_number]; 1562 edge_port = usb_get_serial_port_data(port); 1563 if (!edge_port) { 1564 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1565 return; 1566 } 1567 switch (function) { 1568 case TIUMP_INTERRUPT_CODE_LSR: 1569 lsr = map_line_status(data[1]); 1570 if (lsr & UMP_UART_LSR_DATA_MASK) { 1571 /* Save the LSR event for bulk read 1572 completion routine */ 1573 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1574 __func__, port_number, lsr); 1575 edge_port->lsr_event = 1; 1576 edge_port->lsr_mask = lsr; 1577 } else { 1578 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1579 __func__, port_number, lsr); 1580 handle_new_lsr(edge_port, 0, lsr, 0); 1581 } 1582 break; 1583 1584 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1585 /* Copy MSR from UMP */ 1586 msr = data[1]; 1587 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1588 __func__, port_number, msr); 1589 handle_new_msr(edge_port, msr); 1590 break; 1591 1592 default: 1593 dev_err(&urb->dev->dev, 1594 "%s - Unknown Interrupt code from UMP %x\n", 1595 __func__, data[1]); 1596 break; 1597 1598 } 1599 1600exit: 1601 retval = usb_submit_urb(urb, GFP_ATOMIC); 1602 if (retval) 1603 dev_err(&urb->dev->dev, 1604 "%s - usb_submit_urb failed with result %d\n", 1605 __func__, retval); 1606} 1607 1608static void edge_bulk_in_callback(struct urb *urb) 1609{ 1610 struct edgeport_port *edge_port = urb->context; 1611 struct device *dev = &edge_port->port->dev; 1612 unsigned char *data = urb->transfer_buffer; 1613 int retval = 0; 1614 int port_number; 1615 int status = urb->status; 1616 1617 switch (status) { 1618 case 0: 1619 /* success */ 1620 break; 1621 case -ECONNRESET: 1622 case -ENOENT: 1623 case -ESHUTDOWN: 1624 /* this urb is terminated, clean up */ 1625 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1626 return; 1627 default: 1628 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1629 } 1630 1631 if (status == -EPIPE) 1632 goto exit; 1633 1634 if (status) { 1635 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1636 return; 1637 } 1638 1639 port_number = edge_port->port->number - edge_port->port->serial->minor; 1640 1641 if (edge_port->lsr_event) { 1642 edge_port->lsr_event = 0; 1643 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1644 __func__, port_number, edge_port->lsr_mask, *data); 1645 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1646 /* Adjust buffer length/pointer */ 1647 --urb->actual_length; 1648 ++data; 1649 } 1650 1651 if (urb->actual_length) { 1652 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1653 if (edge_port->close_pending) 1654 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1655 __func__); 1656 else 1657 edge_tty_recv(edge_port->port, data, 1658 urb->actual_length); 1659 edge_port->port->icount.rx += urb->actual_length; 1660 } 1661 1662exit: 1663 /* continue read unless stopped */ 1664 spin_lock(&edge_port->ep_lock); 1665 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1666 retval = usb_submit_urb(urb, GFP_ATOMIC); 1667 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1668 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1669 1670 spin_unlock(&edge_port->ep_lock); 1671 if (retval) 1672 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1673} 1674 1675static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1676 int length) 1677{ 1678 int queued; 1679 1680 queued = tty_insert_flip_string(&port->port, data, length); 1681 if (queued < length) 1682 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1683 __func__, length - queued); 1684 tty_flip_buffer_push(&port->port); 1685} 1686 1687static void edge_bulk_out_callback(struct urb *urb) 1688{ 1689 struct usb_serial_port *port = urb->context; 1690 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1691 int status = urb->status; 1692 struct tty_struct *tty; 1693 1694 edge_port->ep_write_urb_in_use = 0; 1695 1696 switch (status) { 1697 case 0: 1698 /* success */ 1699 break; 1700 case -ECONNRESET: 1701 case -ENOENT: 1702 case -ESHUTDOWN: 1703 /* this urb is terminated, clean up */ 1704 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1705 __func__, status); 1706 return; 1707 default: 1708 dev_err_console(port, "%s - nonzero write bulk status " 1709 "received: %d\n", __func__, status); 1710 } 1711 1712 /* send any buffered data */ 1713 tty = tty_port_tty_get(&port->port); 1714 edge_send(tty); 1715 tty_kref_put(tty); 1716} 1717 1718static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1719{ 1720 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1721 struct edgeport_serial *edge_serial; 1722 struct usb_device *dev; 1723 struct urb *urb; 1724 int port_number; 1725 int status; 1726 u16 open_settings; 1727 u8 transaction_timeout; 1728 1729 if (edge_port == NULL) 1730 return -ENODEV; 1731 1732 port_number = port->number - port->serial->minor; 1733 switch (port_number) { 1734 case 0: 1735 edge_port->uart_base = UMPMEM_BASE_UART1; 1736 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1737 break; 1738 case 1: 1739 edge_port->uart_base = UMPMEM_BASE_UART2; 1740 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1741 break; 1742 default: 1743 dev_err(&port->dev, "Unknown port number!!!\n"); 1744 return -ENODEV; 1745 } 1746 1747 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1748 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1749 1750 dev = port->serial->dev; 1751 1752 /* turn off loopback */ 1753 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1754 if (status) { 1755 dev_err(&port->dev, 1756 "%s - cannot send clear loopback command, %d\n", 1757 __func__, status); 1758 return status; 1759 } 1760 1761 /* set up the port settings */ 1762 if (tty) 1763 edge_set_termios(tty, port, &tty->termios); 1764 1765 /* open up the port */ 1766 1767 /* milliseconds to timeout for DMA transfer */ 1768 transaction_timeout = 2; 1769 1770 edge_port->ump_read_timeout = 1771 max(20, ((transaction_timeout * 3) / 2)); 1772 1773 /* milliseconds to timeout for DMA transfer */ 1774 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1775 UMP_PIPE_TRANS_TIMEOUT_ENA | 1776 (transaction_timeout << 2)); 1777 1778 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1779 1780 /* Tell TI to open and start the port */ 1781 status = send_cmd(dev, UMPC_OPEN_PORT, 1782 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1783 if (status) { 1784 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1785 __func__, status); 1786 return status; 1787 } 1788 1789 /* Start the DMA? */ 1790 status = send_cmd(dev, UMPC_START_PORT, 1791 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1792 if (status) { 1793 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1794 __func__, status); 1795 return status; 1796 } 1797 1798 /* Clear TX and RX buffers in UMP */ 1799 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1800 if (status) { 1801 dev_err(&port->dev, 1802 "%s - cannot send clear buffers command, %d\n", 1803 __func__, status); 1804 return status; 1805 } 1806 1807 /* Read Initial MSR */ 1808 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1809 (__u16)(UMPM_UART1_PORT + port_number), 1810 &edge_port->shadow_msr, 1); 1811 if (status) { 1812 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1813 __func__, status); 1814 return status; 1815 } 1816 1817 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1818 1819 /* Set Initial MCR */ 1820 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1821 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1822 1823 edge_serial = edge_port->edge_serial; 1824 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1825 return -ERESTARTSYS; 1826 if (edge_serial->num_ports_open == 0) { 1827 /* we are the first port to open, post the interrupt urb */ 1828 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1829 if (!urb) { 1830 dev_err(&port->dev, 1831 "%s - no interrupt urb present, exiting\n", 1832 __func__); 1833 status = -EINVAL; 1834 goto release_es_lock; 1835 } 1836 urb->context = edge_serial; 1837 status = usb_submit_urb(urb, GFP_KERNEL); 1838 if (status) { 1839 dev_err(&port->dev, 1840 "%s - usb_submit_urb failed with value %d\n", 1841 __func__, status); 1842 goto release_es_lock; 1843 } 1844 } 1845 1846 /* 1847 * reset the data toggle on the bulk endpoints to work around bug in 1848 * host controllers where things get out of sync some times 1849 */ 1850 usb_clear_halt(dev, port->write_urb->pipe); 1851 usb_clear_halt(dev, port->read_urb->pipe); 1852 1853 /* start up our bulk read urb */ 1854 urb = port->read_urb; 1855 if (!urb) { 1856 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1857 __func__); 1858 status = -EINVAL; 1859 goto unlink_int_urb; 1860 } 1861 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1862 urb->context = edge_port; 1863 status = usb_submit_urb(urb, GFP_KERNEL); 1864 if (status) { 1865 dev_err(&port->dev, 1866 "%s - read bulk usb_submit_urb failed with value %d\n", 1867 __func__, status); 1868 goto unlink_int_urb; 1869 } 1870 1871 ++edge_serial->num_ports_open; 1872 1873 port->port.drain_delay = 1; 1874 1875 goto release_es_lock; 1876 1877unlink_int_urb: 1878 if (edge_port->edge_serial->num_ports_open == 0) 1879 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1880release_es_lock: 1881 mutex_unlock(&edge_serial->es_lock); 1882 return status; 1883} 1884 1885static void edge_close(struct usb_serial_port *port) 1886{ 1887 struct edgeport_serial *edge_serial; 1888 struct edgeport_port *edge_port; 1889 struct usb_serial *serial = port->serial; 1890 unsigned long flags; 1891 int port_number; 1892 1893 edge_serial = usb_get_serial_data(port->serial); 1894 edge_port = usb_get_serial_port_data(port); 1895 if (edge_serial == NULL || edge_port == NULL) 1896 return; 1897 1898 /* The bulkreadcompletion routine will check 1899 * this flag and dump add read data */ 1900 edge_port->close_pending = 1; 1901 1902 usb_kill_urb(port->read_urb); 1903 usb_kill_urb(port->write_urb); 1904 edge_port->ep_write_urb_in_use = 0; 1905 spin_lock_irqsave(&edge_port->ep_lock, flags); 1906 kfifo_reset_out(&edge_port->write_fifo); 1907 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1908 1909 /* assuming we can still talk to the device, 1910 * send a close port command to it */ 1911 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1912 port_number = port->number - port->serial->minor; 1913 1914 mutex_lock(&serial->disc_mutex); 1915 if (!serial->disconnected) { 1916 send_cmd(serial->dev, 1917 UMPC_CLOSE_PORT, 1918 (__u8)(UMPM_UART1_PORT + port_number), 1919 0, 1920 NULL, 1921 0); 1922 } 1923 mutex_unlock(&serial->disc_mutex); 1924 1925 mutex_lock(&edge_serial->es_lock); 1926 --edge_port->edge_serial->num_ports_open; 1927 if (edge_port->edge_serial->num_ports_open <= 0) { 1928 /* last port is now closed, let's shut down our interrupt urb */ 1929 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1930 edge_port->edge_serial->num_ports_open = 0; 1931 } 1932 mutex_unlock(&edge_serial->es_lock); 1933 edge_port->close_pending = 0; 1934} 1935 1936static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1937 const unsigned char *data, int count) 1938{ 1939 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1940 1941 if (count == 0) { 1942 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1943 return 0; 1944 } 1945 1946 if (edge_port == NULL) 1947 return -ENODEV; 1948 if (edge_port->close_pending == 1) 1949 return -ENODEV; 1950 1951 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 1952 &edge_port->ep_lock); 1953 edge_send(tty); 1954 1955 return count; 1956} 1957 1958static void edge_send(struct tty_struct *tty) 1959{ 1960 struct usb_serial_port *port = tty->driver_data; 1961 int count, result; 1962 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1963 unsigned long flags; 1964 1965 spin_lock_irqsave(&edge_port->ep_lock, flags); 1966 1967 if (edge_port->ep_write_urb_in_use) { 1968 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1969 return; 1970 } 1971 1972 count = kfifo_out(&edge_port->write_fifo, 1973 port->write_urb->transfer_buffer, 1974 port->bulk_out_size); 1975 1976 if (count == 0) { 1977 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1978 return; 1979 } 1980 1981 edge_port->ep_write_urb_in_use = 1; 1982 1983 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1984 1985 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1986 1987 /* set up our urb */ 1988 port->write_urb->transfer_buffer_length = count; 1989 1990 /* send the data out the bulk port */ 1991 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1992 if (result) { 1993 dev_err_console(port, 1994 "%s - failed submitting write urb, error %d\n", 1995 __func__, result); 1996 edge_port->ep_write_urb_in_use = 0; 1997 /* TODO: reschedule edge_send */ 1998 } else 1999 edge_port->port->icount.tx += count; 2000 2001 /* wakeup any process waiting for writes to complete */ 2002 /* there is now more room in the buffer for new writes */ 2003 if (tty) 2004 tty_wakeup(tty); 2005} 2006 2007static int edge_write_room(struct tty_struct *tty) 2008{ 2009 struct usb_serial_port *port = tty->driver_data; 2010 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2011 int room = 0; 2012 unsigned long flags; 2013 2014 if (edge_port == NULL) 2015 return 0; 2016 if (edge_port->close_pending == 1) 2017 return 0; 2018 2019 spin_lock_irqsave(&edge_port->ep_lock, flags); 2020 room = kfifo_avail(&edge_port->write_fifo); 2021 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2022 2023 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2024 return room; 2025} 2026 2027static int edge_chars_in_buffer(struct tty_struct *tty) 2028{ 2029 struct usb_serial_port *port = tty->driver_data; 2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2031 int chars = 0; 2032 unsigned long flags; 2033 int ret; 2034 2035 if (edge_port == NULL) 2036 return 0; 2037 2038 spin_lock_irqsave(&edge_port->ep_lock, flags); 2039 chars = kfifo_len(&edge_port->write_fifo); 2040 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2041 2042 if (!chars) { 2043 ret = tx_active(edge_port); 2044 if (ret > 0) 2045 chars = ret; 2046 } 2047 2048 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2049 return chars; 2050} 2051 2052static void edge_throttle(struct tty_struct *tty) 2053{ 2054 struct usb_serial_port *port = tty->driver_data; 2055 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2056 int status; 2057 2058 if (edge_port == NULL) 2059 return; 2060 2061 /* if we are implementing XON/XOFF, send the stop character */ 2062 if (I_IXOFF(tty)) { 2063 unsigned char stop_char = STOP_CHAR(tty); 2064 status = edge_write(tty, port, &stop_char, 1); 2065 if (status <= 0) { 2066 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2067 } 2068 } 2069 2070 /* if we are implementing RTS/CTS, stop reads */ 2071 /* and the Edgeport will clear the RTS line */ 2072 if (C_CRTSCTS(tty)) 2073 stop_read(edge_port); 2074 2075} 2076 2077static void edge_unthrottle(struct tty_struct *tty) 2078{ 2079 struct usb_serial_port *port = tty->driver_data; 2080 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2081 int status; 2082 2083 if (edge_port == NULL) 2084 return; 2085 2086 /* if we are implementing XON/XOFF, send the start character */ 2087 if (I_IXOFF(tty)) { 2088 unsigned char start_char = START_CHAR(tty); 2089 status = edge_write(tty, port, &start_char, 1); 2090 if (status <= 0) { 2091 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2092 } 2093 } 2094 /* if we are implementing RTS/CTS, restart reads */ 2095 /* are the Edgeport will assert the RTS line */ 2096 if (C_CRTSCTS(tty)) { 2097 status = restart_read(edge_port); 2098 if (status) 2099 dev_err(&port->dev, 2100 "%s - read bulk usb_submit_urb failed: %d\n", 2101 __func__, status); 2102 } 2103 2104} 2105 2106static void stop_read(struct edgeport_port *edge_port) 2107{ 2108 unsigned long flags; 2109 2110 spin_lock_irqsave(&edge_port->ep_lock, flags); 2111 2112 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2113 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2114 edge_port->shadow_mcr &= ~MCR_RTS; 2115 2116 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2117} 2118 2119static int restart_read(struct edgeport_port *edge_port) 2120{ 2121 struct urb *urb; 2122 int status = 0; 2123 unsigned long flags; 2124 2125 spin_lock_irqsave(&edge_port->ep_lock, flags); 2126 2127 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2128 urb = edge_port->port->read_urb; 2129 status = usb_submit_urb(urb, GFP_ATOMIC); 2130 } 2131 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2132 edge_port->shadow_mcr |= MCR_RTS; 2133 2134 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2135 2136 return status; 2137} 2138 2139static void change_port_settings(struct tty_struct *tty, 2140 struct edgeport_port *edge_port, struct ktermios *old_termios) 2141{ 2142 struct device *dev = &edge_port->port->dev; 2143 struct ump_uart_config *config; 2144 int baud; 2145 unsigned cflag; 2146 int status; 2147 int port_number = edge_port->port->number - 2148 edge_port->port->serial->minor; 2149 2150 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2151 2152 config = kmalloc (sizeof (*config), GFP_KERNEL); 2153 if (!config) { 2154 tty->termios = *old_termios; 2155 dev_err(dev, "%s - out of memory\n", __func__); 2156 return; 2157 } 2158 2159 cflag = tty->termios.c_cflag; 2160 2161 config->wFlags = 0; 2162 2163 /* These flags must be set */ 2164 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2165 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2166 config->bUartMode = (__u8)(edge_port->bUartMode); 2167 2168 switch (cflag & CSIZE) { 2169 case CS5: 2170 config->bDataBits = UMP_UART_CHAR5BITS; 2171 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2172 break; 2173 case CS6: 2174 config->bDataBits = UMP_UART_CHAR6BITS; 2175 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2176 break; 2177 case CS7: 2178 config->bDataBits = UMP_UART_CHAR7BITS; 2179 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2180 break; 2181 default: 2182 case CS8: 2183 config->bDataBits = UMP_UART_CHAR8BITS; 2184 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2185 break; 2186 } 2187 2188 if (cflag & PARENB) { 2189 if (cflag & PARODD) { 2190 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2191 config->bParity = UMP_UART_ODDPARITY; 2192 dev_dbg(dev, "%s - parity = odd\n", __func__); 2193 } else { 2194 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2195 config->bParity = UMP_UART_EVENPARITY; 2196 dev_dbg(dev, "%s - parity = even\n", __func__); 2197 } 2198 } else { 2199 config->bParity = UMP_UART_NOPARITY; 2200 dev_dbg(dev, "%s - parity = none\n", __func__); 2201 } 2202 2203 if (cflag & CSTOPB) { 2204 config->bStopBits = UMP_UART_STOPBIT2; 2205 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2206 } else { 2207 config->bStopBits = UMP_UART_STOPBIT1; 2208 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2209 } 2210 2211 /* figure out the flow control settings */ 2212 if (cflag & CRTSCTS) { 2213 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2214 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2215 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2216 } else { 2217 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2218 tty->hw_stopped = 0; 2219 restart_read(edge_port); 2220 } 2221 2222 /* if we are implementing XON/XOFF, set the start and stop 2223 character in the device */ 2224 config->cXon = START_CHAR(tty); 2225 config->cXoff = STOP_CHAR(tty); 2226 2227 /* if we are implementing INBOUND XON/XOFF */ 2228 if (I_IXOFF(tty)) { 2229 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2230 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2231 __func__, config->cXon, config->cXoff); 2232 } else 2233 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2234 2235 /* if we are implementing OUTBOUND XON/XOFF */ 2236 if (I_IXON(tty)) { 2237 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2238 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2239 __func__, config->cXon, config->cXoff); 2240 } else 2241 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2242 2243 tty->termios.c_cflag &= ~CMSPAR; 2244 2245 /* Round the baud rate */ 2246 baud = tty_get_baud_rate(tty); 2247 if (!baud) { 2248 /* pick a default, any default... */ 2249 baud = 9600; 2250 } else 2251 tty_encode_baud_rate(tty, baud, baud); 2252 2253 edge_port->baud_rate = baud; 2254 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2255 2256 /* FIXME: Recompute actual baud from divisor here */ 2257 2258 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2259 2260 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2261 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2262 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2263 dev_dbg(dev, "bParity: %d\n", config->bParity); 2264 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2265 dev_dbg(dev, "cXon: %d\n", config->cXon); 2266 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2267 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2268 2269 /* move the word values into big endian mode */ 2270 cpu_to_be16s(&config->wFlags); 2271 cpu_to_be16s(&config->wBaudRate); 2272 2273 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2274 (__u8)(UMPM_UART1_PORT + port_number), 2275 0, (__u8 *)config, sizeof(*config)); 2276 if (status) 2277 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2278 __func__, status); 2279 kfree(config); 2280} 2281 2282static void edge_set_termios(struct tty_struct *tty, 2283 struct usb_serial_port *port, struct ktermios *old_termios) 2284{ 2285 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2286 unsigned int cflag; 2287 2288 cflag = tty->termios.c_cflag; 2289 2290 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2291 tty->termios.c_cflag, tty->termios.c_iflag); 2292 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2293 old_termios->c_cflag, old_termios->c_iflag); 2294 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2295 2296 if (edge_port == NULL) 2297 return; 2298 /* change the port settings to the new ones specified */ 2299 change_port_settings(tty, edge_port, old_termios); 2300} 2301 2302static int edge_tiocmset(struct tty_struct *tty, 2303 unsigned int set, unsigned int clear) 2304{ 2305 struct usb_serial_port *port = tty->driver_data; 2306 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2307 unsigned int mcr; 2308 unsigned long flags; 2309 2310 spin_lock_irqsave(&edge_port->ep_lock, flags); 2311 mcr = edge_port->shadow_mcr; 2312 if (set & TIOCM_RTS) 2313 mcr |= MCR_RTS; 2314 if (set & TIOCM_DTR) 2315 mcr |= MCR_DTR; 2316 if (set & TIOCM_LOOP) 2317 mcr |= MCR_LOOPBACK; 2318 2319 if (clear & TIOCM_RTS) 2320 mcr &= ~MCR_RTS; 2321 if (clear & TIOCM_DTR) 2322 mcr &= ~MCR_DTR; 2323 if (clear & TIOCM_LOOP) 2324 mcr &= ~MCR_LOOPBACK; 2325 2326 edge_port->shadow_mcr = mcr; 2327 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2328 2329 restore_mcr(edge_port, mcr); 2330 return 0; 2331} 2332 2333static int edge_tiocmget(struct tty_struct *tty) 2334{ 2335 struct usb_serial_port *port = tty->driver_data; 2336 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2337 unsigned int result = 0; 2338 unsigned int msr; 2339 unsigned int mcr; 2340 unsigned long flags; 2341 2342 spin_lock_irqsave(&edge_port->ep_lock, flags); 2343 2344 msr = edge_port->shadow_msr; 2345 mcr = edge_port->shadow_mcr; 2346 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2347 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2348 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2349 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2350 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2351 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2352 2353 2354 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2355 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2356 2357 return result; 2358} 2359 2360static int get_serial_info(struct edgeport_port *edge_port, 2361 struct serial_struct __user *retinfo) 2362{ 2363 struct serial_struct tmp; 2364 unsigned cwait; 2365 2366 if (!retinfo) 2367 return -EFAULT; 2368 2369 cwait = edge_port->port->port.closing_wait; 2370 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2371 cwait = jiffies_to_msecs(closing_wait) / 10; 2372 2373 memset(&tmp, 0, sizeof(tmp)); 2374 2375 tmp.type = PORT_16550A; 2376 tmp.line = edge_port->port->serial->minor; 2377 tmp.port = edge_port->port->number; 2378 tmp.irq = 0; 2379 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2380 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2381 tmp.baud_base = 9600; 2382 tmp.close_delay = 5*HZ; 2383 tmp.closing_wait = cwait; 2384 2385 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2386 return -EFAULT; 2387 return 0; 2388} 2389 2390static int edge_ioctl(struct tty_struct *tty, 2391 unsigned int cmd, unsigned long arg) 2392{ 2393 struct usb_serial_port *port = tty->driver_data; 2394 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2395 struct async_icount cnow; 2396 struct async_icount cprev; 2397 2398 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2399 2400 switch (cmd) { 2401 case TIOCGSERIAL: 2402 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2403 return get_serial_info(edge_port, 2404 (struct serial_struct __user *) arg); 2405 case TIOCMIWAIT: 2406 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2407 cprev = edge_port->port->icount; 2408 while (1) { 2409 interruptible_sleep_on(&port->delta_msr_wait); 2410 /* see if a signal did it */ 2411 if (signal_pending(current)) 2412 return -ERESTARTSYS; 2413 2414 if (port->serial->disconnected) 2415 return -EIO; 2416 2417 cnow = port->icount; 2418 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2419 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2420 return -EIO; /* no change => error */ 2421 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2422 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2423 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2424 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2425 return 0; 2426 } 2427 cprev = cnow; 2428 } 2429 /* not reached */ 2430 break; 2431 } 2432 return -ENOIOCTLCMD; 2433} 2434 2435static void edge_break(struct tty_struct *tty, int break_state) 2436{ 2437 struct usb_serial_port *port = tty->driver_data; 2438 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2439 int status; 2440 int bv = 0; /* Off */ 2441 2442 tty_wait_until_sent(tty, 0); 2443 2444 if (break_state == -1) 2445 bv = 1; /* On */ 2446 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2447 if (status) 2448 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2449 __func__, status); 2450} 2451 2452static int edge_startup(struct usb_serial *serial) 2453{ 2454 struct edgeport_serial *edge_serial; 2455 int status; 2456 2457 /* create our private serial structure */ 2458 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2459 if (edge_serial == NULL) { 2460 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2461 return -ENOMEM; 2462 } 2463 mutex_init(&edge_serial->es_lock); 2464 edge_serial->serial = serial; 2465 usb_set_serial_data(serial, edge_serial); 2466 2467 status = download_fw(edge_serial); 2468 if (status) { 2469 kfree(edge_serial); 2470 return status; 2471 } 2472 2473 return 0; 2474} 2475 2476static void edge_disconnect(struct usb_serial *serial) 2477{ 2478} 2479 2480static void edge_release(struct usb_serial *serial) 2481{ 2482 kfree(usb_get_serial_data(serial)); 2483} 2484 2485static int edge_port_probe(struct usb_serial_port *port) 2486{ 2487 struct edgeport_port *edge_port; 2488 int ret; 2489 2490 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2491 if (!edge_port) 2492 return -ENOMEM; 2493 2494 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2495 GFP_KERNEL); 2496 if (ret) { 2497 kfree(edge_port); 2498 return -ENOMEM; 2499 } 2500 2501 spin_lock_init(&edge_port->ep_lock); 2502 edge_port->port = port; 2503 edge_port->edge_serial = usb_get_serial_data(port->serial); 2504 edge_port->bUartMode = default_uart_mode; 2505 2506 usb_set_serial_port_data(port, edge_port); 2507 2508 ret = edge_create_sysfs_attrs(port); 2509 if (ret) { 2510 kfifo_free(&edge_port->write_fifo); 2511 kfree(edge_port); 2512 return ret; 2513 } 2514 2515 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2516 2517 return 0; 2518} 2519 2520static int edge_port_remove(struct usb_serial_port *port) 2521{ 2522 struct edgeport_port *edge_port; 2523 2524 edge_port = usb_get_serial_port_data(port); 2525 2526 edge_remove_sysfs_attrs(port); 2527 kfifo_free(&edge_port->write_fifo); 2528 kfree(edge_port); 2529 2530 return 0; 2531} 2532 2533/* Sysfs Attributes */ 2534 2535static ssize_t show_uart_mode(struct device *dev, 2536 struct device_attribute *attr, char *buf) 2537{ 2538 struct usb_serial_port *port = to_usb_serial_port(dev); 2539 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2540 2541 return sprintf(buf, "%d\n", edge_port->bUartMode); 2542} 2543 2544static ssize_t store_uart_mode(struct device *dev, 2545 struct device_attribute *attr, const char *valbuf, size_t count) 2546{ 2547 struct usb_serial_port *port = to_usb_serial_port(dev); 2548 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2549 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2550 2551 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2552 2553 if (v < 256) 2554 edge_port->bUartMode = v; 2555 else 2556 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2557 2558 return count; 2559} 2560 2561static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2562 store_uart_mode); 2563 2564static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2565{ 2566 return device_create_file(&port->dev, &dev_attr_uart_mode); 2567} 2568 2569static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2570{ 2571 device_remove_file(&port->dev, &dev_attr_uart_mode); 2572 return 0; 2573} 2574 2575 2576static struct usb_serial_driver edgeport_1port_device = { 2577 .driver = { 2578 .owner = THIS_MODULE, 2579 .name = "edgeport_ti_1", 2580 }, 2581 .description = "Edgeport TI 1 port adapter", 2582 .id_table = edgeport_1port_id_table, 2583 .num_ports = 1, 2584 .open = edge_open, 2585 .close = edge_close, 2586 .throttle = edge_throttle, 2587 .unthrottle = edge_unthrottle, 2588 .attach = edge_startup, 2589 .disconnect = edge_disconnect, 2590 .release = edge_release, 2591 .port_probe = edge_port_probe, 2592 .port_remove = edge_port_remove, 2593 .ioctl = edge_ioctl, 2594 .set_termios = edge_set_termios, 2595 .tiocmget = edge_tiocmget, 2596 .tiocmset = edge_tiocmset, 2597 .get_icount = usb_serial_generic_get_icount, 2598 .write = edge_write, 2599 .write_room = edge_write_room, 2600 .chars_in_buffer = edge_chars_in_buffer, 2601 .break_ctl = edge_break, 2602 .read_int_callback = edge_interrupt_callback, 2603 .read_bulk_callback = edge_bulk_in_callback, 2604 .write_bulk_callback = edge_bulk_out_callback, 2605}; 2606 2607static struct usb_serial_driver edgeport_2port_device = { 2608 .driver = { 2609 .owner = THIS_MODULE, 2610 .name = "edgeport_ti_2", 2611 }, 2612 .description = "Edgeport TI 2 port adapter", 2613 .id_table = edgeport_2port_id_table, 2614 .num_ports = 2, 2615 .open = edge_open, 2616 .close = edge_close, 2617 .throttle = edge_throttle, 2618 .unthrottle = edge_unthrottle, 2619 .attach = edge_startup, 2620 .disconnect = edge_disconnect, 2621 .release = edge_release, 2622 .port_probe = edge_port_probe, 2623 .port_remove = edge_port_remove, 2624 .ioctl = edge_ioctl, 2625 .set_termios = edge_set_termios, 2626 .tiocmget = edge_tiocmget, 2627 .tiocmset = edge_tiocmset, 2628 .get_icount = usb_serial_generic_get_icount, 2629 .write = edge_write, 2630 .write_room = edge_write_room, 2631 .chars_in_buffer = edge_chars_in_buffer, 2632 .break_ctl = edge_break, 2633 .read_int_callback = edge_interrupt_callback, 2634 .read_bulk_callback = edge_bulk_in_callback, 2635 .write_bulk_callback = edge_bulk_out_callback, 2636}; 2637 2638static struct usb_serial_driver * const serial_drivers[] = { 2639 &edgeport_1port_device, &edgeport_2port_device, NULL 2640}; 2641 2642module_usb_serial_driver(serial_drivers, id_table_combined); 2643 2644MODULE_AUTHOR(DRIVER_AUTHOR); 2645MODULE_DESCRIPTION(DRIVER_DESC); 2646MODULE_LICENSE("GPL"); 2647MODULE_FIRMWARE("edgeport/down3.bin"); 2648 2649module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2650MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2651 2652module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2653MODULE_PARM_DESC(ignore_cpu_rev, 2654 "Ignore the cpu revision when connecting to a device"); 2655 2656module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2657MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2658