1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Edgeport USB Serial Converter driver 4 * 5 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 7 * 8 * Supports the following devices: 9 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 10 * 11 * For questions or problems with this driver, contact Inside Out 12 * Networks technical support, or Peter Berger <pberger@brimson.com>, 13 * or Al Borchers <alborchers@steinerpoint.com>. 14 */ 15 16#include <linux/kernel.h> 17#include <linux/jiffies.h> 18#include <linux/errno.h> 19#include <linux/slab.h> 20#include <linux/tty.h> 21#include <linux/tty_driver.h> 22#include <linux/tty_flip.h> 23#include <linux/module.h> 24#include <linux/spinlock.h> 25#include <linux/mutex.h> 26#include <linux/serial.h> 27#include <linux/swab.h> 28#include <linux/kfifo.h> 29#include <linux/ioctl.h> 30#include <linux/firmware.h> 31#include <linux/uaccess.h> 32#include <linux/usb.h> 33#include <linux/usb/serial.h> 34 35#include "io_16654.h" 36#include "io_usbvend.h" 37#include "io_ti.h" 38 39#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 40#define DRIVER_DESC "Edgeport USB Serial Driver" 41 42#define EPROM_PAGE_SIZE 64 43 44 45/* different hardware types */ 46#define HARDWARE_TYPE_930 0 47#define HARDWARE_TYPE_TIUMP 1 48 49/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 50#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 51#define TI_MODE_BOOT 1 /* Staying in boot mode */ 52#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 53#define TI_MODE_TRANSITIONING 3 /* 54 * Currently in boot mode but 55 * transitioning to download mode 56 */ 57 58/* read urb state */ 59#define EDGE_READ_URB_RUNNING 0 60#define EDGE_READ_URB_STOPPING 1 61#define EDGE_READ_URB_STOPPED 2 62 63 64/* Product information read from the Edgeport */ 65struct product_info { 66 int TiMode; /* Current TI Mode */ 67 u8 hardware_type; /* Type of hardware */ 68} __packed; 69 70/* 71 * Edgeport firmware header 72 * 73 * "build_number" has been set to 0 in all three of the images I have 74 * seen, and Digi Tech Support suggests that it is safe to ignore it. 75 * 76 * "length" is the number of bytes of actual data following the header. 77 * 78 * "checksum" is the low order byte resulting from adding the values of 79 * all the data bytes. 80 */ 81struct edgeport_fw_hdr { 82 u8 major_version; 83 u8 minor_version; 84 __le16 build_number; 85 __le16 length; 86 u8 checksum; 87} __packed; 88 89struct edgeport_port { 90 u16 uart_base; 91 u16 dma_address; 92 u8 shadow_msr; 93 u8 shadow_mcr; 94 u8 shadow_lsr; 95 u8 lsr_mask; 96 u32 ump_read_timeout; /* 97 * Number of milliseconds the UMP will 98 * wait without data before completing 99 * a read short 100 */ 101 int baud_rate; 102 int close_pending; 103 int lsr_event; 104 105 struct edgeport_serial *edge_serial; 106 struct usb_serial_port *port; 107 u8 bUartMode; /* Port type, 0: RS232, etc. */ 108 spinlock_t ep_lock; 109 int ep_read_urb_state; 110 int ep_write_urb_in_use; 111}; 112 113struct edgeport_serial { 114 struct product_info product_info; 115 u8 TI_I2C_Type; /* Type of I2C in UMP */ 116 u8 TiReadI2C; /* 117 * Set to TRUE if we have read the 118 * I2c in Boot Mode 119 */ 120 struct mutex es_lock; 121 int num_ports_open; 122 struct usb_serial *serial; 123 struct delayed_work heartbeat_work; 124 int fw_version; 125 bool use_heartbeat; 126}; 127 128 129/* Devices that this driver supports */ 130static const struct usb_device_id edgeport_1port_id_table[] = { 131 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 132 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 133 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 134 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 147 { } 148}; 149 150static const struct usb_device_id edgeport_2port_id_table[] = { 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 153 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 154 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 155 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 156 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 157 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 163 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, 170 { } 171}; 172 173/* Devices that this driver supports */ 174static const struct usb_device_id id_table_combined[] = { 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 191 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 192 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 193 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 194 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 195 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 196 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 197 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 198 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 199 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 200 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 201 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 202 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 203 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 204 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 205 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 206 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 207 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 208 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_E5805A) }, 209 { } 210}; 211 212MODULE_DEVICE_TABLE(usb, id_table_combined); 213 214static bool ignore_cpu_rev; 215static int default_uart_mode; /* RS232 */ 216 217static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 218 int length); 219 220static void stop_read(struct edgeport_port *edge_port); 221static int restart_read(struct edgeport_port *edge_port); 222 223static void edge_set_termios(struct tty_struct *tty, 224 struct usb_serial_port *port, 225 const struct ktermios *old_termios); 226static void edge_send(struct usb_serial_port *port, struct tty_struct *tty); 227 228static int do_download_mode(struct edgeport_serial *serial, 229 const struct firmware *fw); 230static int do_boot_mode(struct edgeport_serial *serial, 231 const struct firmware *fw); 232 233/* sysfs attributes */ 234static int edge_create_sysfs_attrs(struct usb_serial_port *port); 235static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 236 237/* 238 * Some release of Edgeport firmware "down3.bin" after version 4.80 239 * introduced code to automatically disconnect idle devices on some 240 * Edgeport models after periods of inactivity, typically ~60 seconds. 241 * This occurs without regard to whether ports on the device are open 242 * or not. Digi International Tech Support suggested: 243 * 244 * 1. Adding driver "heartbeat" code to reset the firmware timer by 245 * requesting a descriptor record every 15 seconds, which should be 246 * effective with newer firmware versions that require it, and benign 247 * with older versions that do not. In practice 40 seconds seems often 248 * enough. 249 * 2. The heartbeat code is currently required only on Edgeport/416 models. 250 */ 251#define FW_HEARTBEAT_VERSION_CUTOFF ((4 << 8) + 80) 252#define FW_HEARTBEAT_SECS 40 253 254/* Timeouts in msecs: firmware downloads take longer */ 255#define TI_VSEND_TIMEOUT_DEFAULT 1000 256#define TI_VSEND_TIMEOUT_FW_DOWNLOAD 10000 257 258static int ti_vread_sync(struct usb_device *dev, u8 request, u16 value, 259 u16 index, void *data, int size) 260{ 261 int status; 262 263 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 264 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 265 value, index, data, size, 1000); 266 if (status < 0) 267 return status; 268 if (status != size) { 269 dev_dbg(&dev->dev, "%s - wanted to read %d, but only read %d\n", 270 __func__, size, status); 271 return -ECOMM; 272 } 273 return 0; 274} 275 276static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value, 277 u16 index, void *data, int size, int timeout) 278{ 279 int status; 280 281 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 282 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 283 value, index, data, size, timeout); 284 if (status < 0) 285 return status; 286 287 return 0; 288} 289 290static int read_port_cmd(struct usb_serial_port *port, u8 command, u16 value, 291 void *data, int size) 292{ 293 return ti_vread_sync(port->serial->dev, command, value, 294 UMPM_UART1_PORT + port->port_number, 295 data, size); 296} 297 298static int send_port_cmd(struct usb_serial_port *port, u8 command, u16 value, 299 void *data, int size) 300{ 301 return ti_vsend_sync(port->serial->dev, command, value, 302 UMPM_UART1_PORT + port->port_number, 303 data, size, TI_VSEND_TIMEOUT_DEFAULT); 304} 305 306/* clear tx/rx buffers and fifo in TI UMP */ 307static int purge_port(struct usb_serial_port *port, u16 mask) 308{ 309 int port_number = port->port_number; 310 311 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 312 313 return send_port_cmd(port, UMPC_PURGE_PORT, mask, NULL, 0); 314} 315 316/** 317 * read_download_mem - Read edgeport memory from TI chip 318 * @dev: usb device pointer 319 * @start_address: Device CPU address at which to read 320 * @length: Length of above data 321 * @address_type: Can read both XDATA and I2C 322 * @buffer: pointer to input data buffer 323 */ 324static int read_download_mem(struct usb_device *dev, int start_address, 325 int length, u8 address_type, u8 *buffer) 326{ 327 int status = 0; 328 u8 read_length; 329 u16 be_start_address; 330 331 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 332 333 /* 334 * Read in blocks of 64 bytes 335 * (TI firmware can't handle more than 64 byte reads) 336 */ 337 while (length) { 338 if (length > 64) 339 read_length = 64; 340 else 341 read_length = (u8)length; 342 343 if (read_length > 1) { 344 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 345 } 346 /* 347 * NOTE: Must use swab as wIndex is sent in little-endian 348 * byte order regardless of host byte order. 349 */ 350 be_start_address = swab16((u16)start_address); 351 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 352 (u16)address_type, 353 be_start_address, 354 buffer, read_length); 355 356 if (status) { 357 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 358 return status; 359 } 360 361 if (read_length > 1) 362 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 363 364 /* Update pointers/length */ 365 start_address += read_length; 366 buffer += read_length; 367 length -= read_length; 368 } 369 370 return status; 371} 372 373static int read_ram(struct usb_device *dev, int start_address, 374 int length, u8 *buffer) 375{ 376 return read_download_mem(dev, start_address, length, 377 DTK_ADDR_SPACE_XDATA, buffer); 378} 379 380/* Read edgeport memory to a given block */ 381static int read_boot_mem(struct edgeport_serial *serial, 382 int start_address, int length, u8 *buffer) 383{ 384 int status = 0; 385 int i; 386 387 for (i = 0; i < length; i++) { 388 status = ti_vread_sync(serial->serial->dev, 389 UMPC_MEMORY_READ, serial->TI_I2C_Type, 390 (u16)(start_address+i), &buffer[i], 0x01); 391 if (status) { 392 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 393 return status; 394 } 395 } 396 397 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 398 __func__, start_address, length); 399 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 400 401 serial->TiReadI2C = 1; 402 403 return status; 404} 405 406/* Write given block to TI EPROM memory */ 407static int write_boot_mem(struct edgeport_serial *serial, 408 int start_address, int length, u8 *buffer) 409{ 410 int status = 0; 411 int i; 412 u8 *temp; 413 414 /* Must do a read before write */ 415 if (!serial->TiReadI2C) { 416 temp = kmalloc(1, GFP_KERNEL); 417 if (!temp) 418 return -ENOMEM; 419 420 status = read_boot_mem(serial, 0, 1, temp); 421 kfree(temp); 422 if (status) 423 return status; 424 } 425 426 for (i = 0; i < length; ++i) { 427 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 428 buffer[i], (u16)(i + start_address), NULL, 429 0, TI_VSEND_TIMEOUT_DEFAULT); 430 if (status) 431 return status; 432 } 433 434 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 435 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 436 437 return status; 438} 439 440/* Write edgeport I2C memory to TI chip */ 441static int write_i2c_mem(struct edgeport_serial *serial, 442 int start_address, int length, u8 address_type, u8 *buffer) 443{ 444 struct device *dev = &serial->serial->dev->dev; 445 int status = 0; 446 int write_length; 447 u16 be_start_address; 448 449 /* We can only send a maximum of 1 aligned byte page at a time */ 450 451 /* calculate the number of bytes left in the first page */ 452 write_length = EPROM_PAGE_SIZE - 453 (start_address & (EPROM_PAGE_SIZE - 1)); 454 455 if (write_length > length) 456 write_length = length; 457 458 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 459 __func__, start_address, write_length); 460 usb_serial_debug_data(dev, __func__, write_length, buffer); 461 462 /* 463 * Write first page. 464 * 465 * NOTE: Must use swab as wIndex is sent in little-endian byte order 466 * regardless of host byte order. 467 */ 468 be_start_address = swab16((u16)start_address); 469 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 470 (u16)address_type, be_start_address, 471 buffer, write_length, TI_VSEND_TIMEOUT_DEFAULT); 472 if (status) { 473 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 474 return status; 475 } 476 477 length -= write_length; 478 start_address += write_length; 479 buffer += write_length; 480 481 /* 482 * We should be aligned now -- can write max page size bytes at a 483 * time. 484 */ 485 while (length) { 486 if (length > EPROM_PAGE_SIZE) 487 write_length = EPROM_PAGE_SIZE; 488 else 489 write_length = length; 490 491 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 492 __func__, start_address, write_length); 493 usb_serial_debug_data(dev, __func__, write_length, buffer); 494 495 /* 496 * Write next page. 497 * 498 * NOTE: Must use swab as wIndex is sent in little-endian byte 499 * order regardless of host byte order. 500 */ 501 be_start_address = swab16((u16)start_address); 502 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 503 (u16)address_type, be_start_address, buffer, 504 write_length, TI_VSEND_TIMEOUT_DEFAULT); 505 if (status) { 506 dev_err(dev, "%s - ERROR %d\n", __func__, status); 507 return status; 508 } 509 510 length -= write_length; 511 start_address += write_length; 512 buffer += write_length; 513 } 514 return status; 515} 516 517/* 518 * Examine the UMP DMA registers and LSR 519 * 520 * Check the MSBit of the X and Y DMA byte count registers. 521 * A zero in this bit indicates that the TX DMA buffers are empty 522 * then check the TX Empty bit in the UART. 523 */ 524static int tx_active(struct edgeport_port *port) 525{ 526 int status; 527 struct out_endpoint_desc_block *oedb; 528 u8 *lsr; 529 int bytes_left = 0; 530 531 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 532 if (!oedb) 533 return -ENOMEM; 534 535 /* 536 * Sigh, that's right, just one byte, as not all platforms can 537 * do DMA from stack 538 */ 539 lsr = kmalloc(1, GFP_KERNEL); 540 if (!lsr) { 541 kfree(oedb); 542 return -ENOMEM; 543 } 544 /* Read the DMA Count Registers */ 545 status = read_ram(port->port->serial->dev, port->dma_address, 546 sizeof(*oedb), (void *)oedb); 547 if (status) 548 goto exit_is_tx_active; 549 550 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 551 552 /* and the LSR */ 553 status = read_ram(port->port->serial->dev, 554 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 555 556 if (status) 557 goto exit_is_tx_active; 558 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 559 560 /* If either buffer has data or we are transmitting then return TRUE */ 561 if ((oedb->XByteCount & 0x80) != 0) 562 bytes_left += 64; 563 564 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 565 bytes_left += 1; 566 567 /* We return Not Active if we get any kind of error */ 568exit_is_tx_active: 569 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 570 571 kfree(lsr); 572 kfree(oedb); 573 return bytes_left; 574} 575 576static int choose_config(struct usb_device *dev) 577{ 578 /* 579 * There may be multiple configurations on this device, in which case 580 * we would need to read and parse all of them to find out which one 581 * we want. However, we just support one config at this point, 582 * configuration # 1, which is Config Descriptor 0. 583 */ 584 585 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 586 __func__, dev->config->desc.bNumInterfaces); 587 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 588 __func__, dev->config->desc.bMaxPower * 2); 589 590 if (dev->config->desc.bNumInterfaces != 1) { 591 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 592 return -ENODEV; 593 } 594 595 return 0; 596} 597 598static int read_rom(struct edgeport_serial *serial, 599 int start_address, int length, u8 *buffer) 600{ 601 int status; 602 603 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 604 status = read_download_mem(serial->serial->dev, 605 start_address, 606 length, 607 serial->TI_I2C_Type, 608 buffer); 609 } else { 610 status = read_boot_mem(serial, start_address, length, 611 buffer); 612 } 613 return status; 614} 615 616static int write_rom(struct edgeport_serial *serial, int start_address, 617 int length, u8 *buffer) 618{ 619 if (serial->product_info.TiMode == TI_MODE_BOOT) 620 return write_boot_mem(serial, start_address, length, 621 buffer); 622 623 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 624 return write_i2c_mem(serial, start_address, length, 625 serial->TI_I2C_Type, buffer); 626 return -EINVAL; 627} 628 629/* Read a descriptor header from I2C based on type */ 630static int get_descriptor_addr(struct edgeport_serial *serial, 631 int desc_type, struct ti_i2c_desc *rom_desc) 632{ 633 int start_address; 634 int status; 635 636 /* Search for requested descriptor in I2C */ 637 start_address = 2; 638 do { 639 status = read_rom(serial, 640 start_address, 641 sizeof(struct ti_i2c_desc), 642 (u8 *)rom_desc); 643 if (status) 644 return 0; 645 646 if (rom_desc->Type == desc_type) 647 return start_address; 648 649 start_address = start_address + sizeof(struct ti_i2c_desc) + 650 le16_to_cpu(rom_desc->Size); 651 652 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 653 654 return 0; 655} 656 657/* Validate descriptor checksum */ 658static int valid_csum(struct ti_i2c_desc *rom_desc, u8 *buffer) 659{ 660 u16 i; 661 u8 cs = 0; 662 663 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) 664 cs = (u8)(cs + buffer[i]); 665 666 if (cs != rom_desc->CheckSum) { 667 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 668 return -EINVAL; 669 } 670 return 0; 671} 672 673/* Make sure that the I2C image is good */ 674static int check_i2c_image(struct edgeport_serial *serial) 675{ 676 struct device *dev = &serial->serial->dev->dev; 677 int status = 0; 678 struct ti_i2c_desc *rom_desc; 679 int start_address = 2; 680 u8 *buffer; 681 u16 ttype; 682 683 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 684 if (!rom_desc) 685 return -ENOMEM; 686 687 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 688 if (!buffer) { 689 kfree(rom_desc); 690 return -ENOMEM; 691 } 692 693 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 694 status = read_rom(serial, 0, 1, buffer); 695 if (status) 696 goto out; 697 698 if (*buffer != UMP5152 && *buffer != UMP3410) { 699 dev_err(dev, "%s - invalid buffer signature\n", __func__); 700 status = -ENODEV; 701 goto out; 702 } 703 704 do { 705 /* Validate the I2C */ 706 status = read_rom(serial, 707 start_address, 708 sizeof(struct ti_i2c_desc), 709 (u8 *)rom_desc); 710 if (status) 711 break; 712 713 if ((start_address + sizeof(struct ti_i2c_desc) + 714 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { 715 status = -ENODEV; 716 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 717 break; 718 } 719 720 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 721 722 /* Skip type 2 record */ 723 ttype = rom_desc->Type & 0x0f; 724 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 725 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 726 /* Read the descriptor data */ 727 status = read_rom(serial, start_address + 728 sizeof(struct ti_i2c_desc), 729 le16_to_cpu(rom_desc->Size), 730 buffer); 731 if (status) 732 break; 733 734 status = valid_csum(rom_desc, buffer); 735 if (status) 736 break; 737 } 738 start_address = start_address + sizeof(struct ti_i2c_desc) + 739 le16_to_cpu(rom_desc->Size); 740 741 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 742 (start_address < TI_MAX_I2C_SIZE)); 743 744 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 745 (start_address > TI_MAX_I2C_SIZE)) 746 status = -ENODEV; 747 748out: 749 kfree(buffer); 750 kfree(rom_desc); 751 return status; 752} 753 754static int get_manuf_info(struct edgeport_serial *serial, u8 *buffer) 755{ 756 int status; 757 int start_address; 758 struct ti_i2c_desc *rom_desc; 759 struct edge_ti_manuf_descriptor *desc; 760 struct device *dev = &serial->serial->dev->dev; 761 762 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 763 if (!rom_desc) 764 return -ENOMEM; 765 766 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 767 rom_desc); 768 769 if (!start_address) { 770 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 771 status = -ENODEV; 772 goto exit; 773 } 774 775 /* Read the descriptor data */ 776 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 777 le16_to_cpu(rom_desc->Size), buffer); 778 if (status) 779 goto exit; 780 781 status = valid_csum(rom_desc, buffer); 782 783 desc = (struct edge_ti_manuf_descriptor *)buffer; 784 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 785 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 786 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 787 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 788 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 789 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 790 791exit: 792 kfree(rom_desc); 793 return status; 794} 795 796/* Build firmware header used for firmware update */ 797static int build_i2c_fw_hdr(u8 *header, const struct firmware *fw) 798{ 799 u8 *buffer; 800 int buffer_size; 801 int i; 802 u8 cs = 0; 803 struct ti_i2c_desc *i2c_header; 804 struct ti_i2c_image_header *img_header; 805 struct ti_i2c_firmware_rec *firmware_rec; 806 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 807 808 /* 809 * In order to update the I2C firmware we must change the type 2 record 810 * to type 0xF2. This will force the UMP to come up in Boot Mode. 811 * Then while in boot mode, the driver will download the latest 812 * firmware (padded to 15.5k) into the UMP ram. And finally when the 813 * device comes back up in download mode the driver will cause the new 814 * firmware to be copied from the UMP Ram to I2C and the firmware will 815 * update the record type from 0xf2 to 0x02. 816 */ 817 818 /* 819 * Allocate a 15.5k buffer + 2 bytes for version number (Firmware 820 * Record) 821 */ 822 buffer_size = (((1024 * 16) - 512 ) + 823 sizeof(struct ti_i2c_firmware_rec)); 824 825 buffer = kmalloc(buffer_size, GFP_KERNEL); 826 if (!buffer) 827 return -ENOMEM; 828 829 /* Set entire image of 0xffs */ 830 memset(buffer, 0xff, buffer_size); 831 832 /* Copy version number into firmware record */ 833 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 834 835 firmware_rec->Ver_Major = fw_hdr->major_version; 836 firmware_rec->Ver_Minor = fw_hdr->minor_version; 837 838 /* Pointer to fw_down memory image */ 839 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 840 841 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 842 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 843 le16_to_cpu(img_header->Length)); 844 845 for (i=0; i < buffer_size; i++) { 846 cs = (u8)(cs + buffer[i]); 847 } 848 849 kfree(buffer); 850 851 /* Build new header */ 852 i2c_header = (struct ti_i2c_desc *)header; 853 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 854 855 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 856 i2c_header->Size = cpu_to_le16(buffer_size); 857 i2c_header->CheckSum = cs; 858 firmware_rec->Ver_Major = fw_hdr->major_version; 859 firmware_rec->Ver_Minor = fw_hdr->minor_version; 860 861 return 0; 862} 863 864/* Try to figure out what type of I2c we have */ 865static int i2c_type_bootmode(struct edgeport_serial *serial) 866{ 867 struct device *dev = &serial->serial->dev->dev; 868 int status; 869 u8 *data; 870 871 data = kmalloc(1, GFP_KERNEL); 872 if (!data) 873 return -ENOMEM; 874 875 /* Try to read type 2 */ 876 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 877 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 878 if (status) 879 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 880 else 881 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 882 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 883 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 884 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 885 goto out; 886 } 887 888 /* Try to read type 3 */ 889 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 890 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 891 if (status) 892 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 893 else 894 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 895 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 896 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 897 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 898 goto out; 899 } 900 901 dev_dbg(dev, "%s - Unknown\n", __func__); 902 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 903 status = -ENODEV; 904out: 905 kfree(data); 906 return status; 907} 908 909static int bulk_xfer(struct usb_serial *serial, void *buffer, 910 int length, int *num_sent) 911{ 912 int status; 913 914 status = usb_bulk_msg(serial->dev, 915 usb_sndbulkpipe(serial->dev, 916 serial->port[0]->bulk_out_endpointAddress), 917 buffer, length, num_sent, 1000); 918 return status; 919} 920 921/* Download given firmware image to the device (IN BOOT MODE) */ 922static int download_code(struct edgeport_serial *serial, u8 *image, 923 int image_length) 924{ 925 int status = 0; 926 int pos; 927 int transfer; 928 int done; 929 930 /* Transfer firmware image */ 931 for (pos = 0; pos < image_length; ) { 932 /* Read the next buffer from file */ 933 transfer = image_length - pos; 934 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 935 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 936 937 /* Transfer data */ 938 status = bulk_xfer(serial->serial, &image[pos], 939 transfer, &done); 940 if (status) 941 break; 942 /* Advance buffer pointer */ 943 pos += done; 944 } 945 946 return status; 947} 948 949/* FIXME!!! */ 950static int config_boot_dev(struct usb_device *dev) 951{ 952 return 0; 953} 954 955static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 956{ 957 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 958} 959 960static int check_fw_sanity(struct edgeport_serial *serial, 961 const struct firmware *fw) 962{ 963 u16 length_total; 964 u8 checksum = 0; 965 int pos; 966 struct device *dev = &serial->serial->interface->dev; 967 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 968 969 if (fw->size < sizeof(struct edgeport_fw_hdr)) { 970 dev_err(dev, "incomplete fw header\n"); 971 return -EINVAL; 972 } 973 974 length_total = le16_to_cpu(fw_hdr->length) + 975 sizeof(struct edgeport_fw_hdr); 976 977 if (fw->size != length_total) { 978 dev_err(dev, "bad fw size (expected: %u, got: %zu)\n", 979 length_total, fw->size); 980 return -EINVAL; 981 } 982 983 for (pos = sizeof(struct edgeport_fw_hdr); pos < fw->size; ++pos) 984 checksum += fw->data[pos]; 985 986 if (checksum != fw_hdr->checksum) { 987 dev_err(dev, "bad fw checksum (expected: 0x%x, got: 0x%x)\n", 988 fw_hdr->checksum, checksum); 989 return -EINVAL; 990 } 991 992 return 0; 993} 994 995/* 996 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 997 * 998 * This routine downloads the main operating code into the TI5052, using the 999 * boot code already burned into E2PROM or ROM. 1000 */ 1001static int download_fw(struct edgeport_serial *serial) 1002{ 1003 struct device *dev = &serial->serial->interface->dev; 1004 int status = 0; 1005 struct usb_interface_descriptor *interface; 1006 const struct firmware *fw; 1007 const char *fw_name = "edgeport/down3.bin"; 1008 struct edgeport_fw_hdr *fw_hdr; 1009 1010 status = request_firmware(&fw, fw_name, dev); 1011 if (status) { 1012 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1013 fw_name, status); 1014 return status; 1015 } 1016 1017 if (check_fw_sanity(serial, fw)) { 1018 status = -EINVAL; 1019 goto out; 1020 } 1021 1022 fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1023 1024 /* If on-board version is newer, "fw_version" will be updated later. */ 1025 serial->fw_version = (fw_hdr->major_version << 8) + 1026 fw_hdr->minor_version; 1027 1028 /* 1029 * This routine is entered by both the BOOT mode and the Download mode 1030 * We can determine which code is running by the reading the config 1031 * descriptor and if we have only one bulk pipe it is in boot mode 1032 */ 1033 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1034 1035 /* Default to type 2 i2c */ 1036 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1037 1038 status = choose_config(serial->serial->dev); 1039 if (status) 1040 goto out; 1041 1042 interface = &serial->serial->interface->cur_altsetting->desc; 1043 if (!interface) { 1044 dev_err(dev, "%s - no interface set, error!\n", __func__); 1045 status = -ENODEV; 1046 goto out; 1047 } 1048 1049 /* 1050 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1051 * if we have more than one endpoint we are definitely in download 1052 * mode 1053 */ 1054 if (interface->bNumEndpoints > 1) { 1055 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1056 status = do_download_mode(serial, fw); 1057 } else { 1058 /* Otherwise we will remain in configuring mode */ 1059 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1060 status = do_boot_mode(serial, fw); 1061 } 1062 1063out: 1064 release_firmware(fw); 1065 return status; 1066} 1067 1068static int do_download_mode(struct edgeport_serial *serial, 1069 const struct firmware *fw) 1070{ 1071 struct device *dev = &serial->serial->interface->dev; 1072 int status = 0; 1073 int start_address; 1074 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1075 int download_cur_ver; 1076 int download_new_ver; 1077 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1078 struct ti_i2c_desc *rom_desc; 1079 1080 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1081 1082 status = check_i2c_image(serial); 1083 if (status) { 1084 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1085 return status; 1086 } 1087 1088 /* 1089 * Validate Hardware version number 1090 * Read Manufacturing Descriptor from TI Based Edgeport 1091 */ 1092 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1093 if (!ti_manuf_desc) 1094 return -ENOMEM; 1095 1096 status = get_manuf_info(serial, (u8 *)ti_manuf_desc); 1097 if (status) { 1098 kfree(ti_manuf_desc); 1099 return status; 1100 } 1101 1102 /* Check version number of ION descriptor */ 1103 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1104 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1105 __func__, ti_cpu_rev(ti_manuf_desc)); 1106 kfree(ti_manuf_desc); 1107 return -EINVAL; 1108 } 1109 1110 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1111 if (!rom_desc) { 1112 kfree(ti_manuf_desc); 1113 return -ENOMEM; 1114 } 1115 1116 /* Search for type 2 record (firmware record) */ 1117 start_address = get_descriptor_addr(serial, 1118 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1119 if (start_address != 0) { 1120 struct ti_i2c_firmware_rec *firmware_version; 1121 u8 *record; 1122 1123 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", 1124 __func__); 1125 1126 firmware_version = kmalloc(sizeof(*firmware_version), 1127 GFP_KERNEL); 1128 if (!firmware_version) { 1129 kfree(rom_desc); 1130 kfree(ti_manuf_desc); 1131 return -ENOMEM; 1132 } 1133 1134 /* 1135 * Validate version number 1136 * Read the descriptor data 1137 */ 1138 status = read_rom(serial, start_address + 1139 sizeof(struct ti_i2c_desc), 1140 sizeof(struct ti_i2c_firmware_rec), 1141 (u8 *)firmware_version); 1142 if (status) { 1143 kfree(firmware_version); 1144 kfree(rom_desc); 1145 kfree(ti_manuf_desc); 1146 return status; 1147 } 1148 1149 /* 1150 * Check version number of download with current 1151 * version in I2c 1152 */ 1153 download_cur_ver = (firmware_version->Ver_Major << 8) + 1154 (firmware_version->Ver_Minor); 1155 download_new_ver = (fw_hdr->major_version << 8) + 1156 (fw_hdr->minor_version); 1157 1158 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1159 __func__, firmware_version->Ver_Major, 1160 firmware_version->Ver_Minor, 1161 fw_hdr->major_version, fw_hdr->minor_version); 1162 1163 /* 1164 * Check if we have an old version in the I2C and 1165 * update if necessary 1166 */ 1167 if (download_cur_ver < download_new_ver) { 1168 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1169 __func__, 1170 firmware_version->Ver_Major, 1171 firmware_version->Ver_Minor, 1172 fw_hdr->major_version, 1173 fw_hdr->minor_version); 1174 1175 record = kmalloc(1, GFP_KERNEL); 1176 if (!record) { 1177 kfree(firmware_version); 1178 kfree(rom_desc); 1179 kfree(ti_manuf_desc); 1180 return -ENOMEM; 1181 } 1182 /* 1183 * In order to update the I2C firmware we must 1184 * change the type 2 record to type 0xF2. This 1185 * will force the UMP to come up in Boot Mode. 1186 * Then while in boot mode, the driver will 1187 * download the latest firmware (padded to 1188 * 15.5k) into the UMP ram. Finally when the 1189 * device comes back up in download mode the 1190 * driver will cause the new firmware to be 1191 * copied from the UMP Ram to I2C and the 1192 * firmware will update the record type from 1193 * 0xf2 to 0x02. 1194 */ 1195 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1196 1197 /* 1198 * Change the I2C Firmware record type to 1199 * 0xf2 to trigger an update 1200 */ 1201 status = write_rom(serial, start_address, 1202 sizeof(*record), record); 1203 if (status) { 1204 kfree(record); 1205 kfree(firmware_version); 1206 kfree(rom_desc); 1207 kfree(ti_manuf_desc); 1208 return status; 1209 } 1210 1211 /* 1212 * verify the write -- must do this in order 1213 * for write to complete before we do the 1214 * hardware reset 1215 */ 1216 status = read_rom(serial, 1217 start_address, 1218 sizeof(*record), 1219 record); 1220 if (status) { 1221 kfree(record); 1222 kfree(firmware_version); 1223 kfree(rom_desc); 1224 kfree(ti_manuf_desc); 1225 return status; 1226 } 1227 1228 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1229 dev_err(dev, "%s - error resetting device\n", 1230 __func__); 1231 kfree(record); 1232 kfree(firmware_version); 1233 kfree(rom_desc); 1234 kfree(ti_manuf_desc); 1235 return -ENODEV; 1236 } 1237 1238 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1239 1240 /* Reset UMP -- Back to BOOT MODE */ 1241 status = ti_vsend_sync(serial->serial->dev, 1242 UMPC_HARDWARE_RESET, 1243 0, 0, NULL, 0, 1244 TI_VSEND_TIMEOUT_DEFAULT); 1245 1246 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", 1247 __func__, status); 1248 1249 /* return an error on purpose. */ 1250 kfree(record); 1251 kfree(firmware_version); 1252 kfree(rom_desc); 1253 kfree(ti_manuf_desc); 1254 return -ENODEV; 1255 } 1256 /* Same or newer fw version is already loaded */ 1257 serial->fw_version = download_cur_ver; 1258 kfree(firmware_version); 1259 } 1260 /* Search for type 0xF2 record (firmware blank record) */ 1261 else { 1262 start_address = get_descriptor_addr(serial, 1263 I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc); 1264 if (start_address != 0) { 1265#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1266 sizeof(struct ti_i2c_firmware_rec)) 1267 u8 *header; 1268 u8 *vheader; 1269 1270 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1271 if (!header) { 1272 kfree(rom_desc); 1273 kfree(ti_manuf_desc); 1274 return -ENOMEM; 1275 } 1276 1277 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1278 if (!vheader) { 1279 kfree(header); 1280 kfree(rom_desc); 1281 kfree(ti_manuf_desc); 1282 return -ENOMEM; 1283 } 1284 1285 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", 1286 __func__); 1287 1288 /* 1289 * In order to update the I2C firmware we must change 1290 * the type 2 record to type 0xF2. This will force the 1291 * UMP to come up in Boot Mode. Then while in boot 1292 * mode, the driver will download the latest firmware 1293 * (padded to 15.5k) into the UMP ram. Finally when the 1294 * device comes back up in download mode the driver 1295 * will cause the new firmware to be copied from the 1296 * UMP Ram to I2C and the firmware will update the 1297 * record type from 0xf2 to 0x02. 1298 */ 1299 status = build_i2c_fw_hdr(header, fw); 1300 if (status) { 1301 kfree(vheader); 1302 kfree(header); 1303 kfree(rom_desc); 1304 kfree(ti_manuf_desc); 1305 return -EINVAL; 1306 } 1307 1308 /* 1309 * Update I2C with type 0xf2 record with correct 1310 * size and checksum 1311 */ 1312 status = write_rom(serial, 1313 start_address, 1314 HEADER_SIZE, 1315 header); 1316 if (status) { 1317 kfree(vheader); 1318 kfree(header); 1319 kfree(rom_desc); 1320 kfree(ti_manuf_desc); 1321 return -EINVAL; 1322 } 1323 1324 /* 1325 * verify the write -- must do this in order for 1326 * write to complete before we do the hardware reset 1327 */ 1328 status = read_rom(serial, start_address, 1329 HEADER_SIZE, vheader); 1330 1331 if (status) { 1332 dev_dbg(dev, "%s - can't read header back\n", 1333 __func__); 1334 kfree(vheader); 1335 kfree(header); 1336 kfree(rom_desc); 1337 kfree(ti_manuf_desc); 1338 return status; 1339 } 1340 if (memcmp(vheader, header, HEADER_SIZE)) { 1341 dev_dbg(dev, "%s - write download record failed\n", 1342 __func__); 1343 kfree(vheader); 1344 kfree(header); 1345 kfree(rom_desc); 1346 kfree(ti_manuf_desc); 1347 return -EINVAL; 1348 } 1349 1350 kfree(vheader); 1351 kfree(header); 1352 1353 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1354 1355 /* Tell firmware to copy download image into I2C */ 1356 status = ti_vsend_sync(serial->serial->dev, 1357 UMPC_COPY_DNLD_TO_I2C, 1358 0, 0, NULL, 0, 1359 TI_VSEND_TIMEOUT_FW_DOWNLOAD); 1360 1361 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, 1362 status); 1363 if (status) { 1364 dev_err(dev, 1365 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1366 __func__); 1367 kfree(rom_desc); 1368 kfree(ti_manuf_desc); 1369 return status; 1370 } 1371 } 1372 } 1373 1374 /* The device is running the download code */ 1375 kfree(rom_desc); 1376 kfree(ti_manuf_desc); 1377 return 0; 1378} 1379 1380static int do_boot_mode(struct edgeport_serial *serial, 1381 const struct firmware *fw) 1382{ 1383 struct device *dev = &serial->serial->interface->dev; 1384 int status = 0; 1385 struct edge_ti_manuf_descriptor *ti_manuf_desc; 1386 struct edgeport_fw_hdr *fw_hdr = (struct edgeport_fw_hdr *)fw->data; 1387 1388 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1389 1390 /* Configure the TI device so we can use the BULK pipes for download */ 1391 status = config_boot_dev(serial->serial->dev); 1392 if (status) 1393 return status; 1394 1395 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1396 != USB_VENDOR_ID_ION) { 1397 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1398 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1399 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1400 goto stayinbootmode; 1401 } 1402 1403 /* 1404 * We have an ION device (I2c Must be programmed) 1405 * Determine I2C image type 1406 */ 1407 if (i2c_type_bootmode(serial)) 1408 goto stayinbootmode; 1409 1410 /* Check for ION Vendor ID and that the I2C is valid */ 1411 if (!check_i2c_image(serial)) { 1412 struct ti_i2c_image_header *header; 1413 int i; 1414 u8 cs = 0; 1415 u8 *buffer; 1416 int buffer_size; 1417 1418 /* 1419 * Validate Hardware version number 1420 * Read Manufacturing Descriptor from TI Based Edgeport 1421 */ 1422 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1423 if (!ti_manuf_desc) 1424 return -ENOMEM; 1425 1426 status = get_manuf_info(serial, (u8 *)ti_manuf_desc); 1427 if (status) { 1428 kfree(ti_manuf_desc); 1429 goto stayinbootmode; 1430 } 1431 1432 /* Check for version 2 */ 1433 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1434 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1435 __func__, ti_cpu_rev(ti_manuf_desc)); 1436 kfree(ti_manuf_desc); 1437 goto stayinbootmode; 1438 } 1439 1440 kfree(ti_manuf_desc); 1441 1442 /* 1443 * In order to update the I2C firmware we must change the type 1444 * 2 record to type 0xF2. This will force the UMP to come up 1445 * in Boot Mode. Then while in boot mode, the driver will 1446 * download the latest firmware (padded to 15.5k) into the 1447 * UMP ram. Finally when the device comes back up in download 1448 * mode the driver will cause the new firmware to be copied 1449 * from the UMP Ram to I2C and the firmware will update the 1450 * record type from 0xf2 to 0x02. 1451 * 1452 * Do we really have to copy the whole firmware image, 1453 * or could we do this in place! 1454 */ 1455 1456 /* Allocate a 15.5k buffer + 3 byte header */ 1457 buffer_size = (((1024 * 16) - 512) + 1458 sizeof(struct ti_i2c_image_header)); 1459 buffer = kmalloc(buffer_size, GFP_KERNEL); 1460 if (!buffer) 1461 return -ENOMEM; 1462 1463 /* Initialize the buffer to 0xff (pad the buffer) */ 1464 memset(buffer, 0xff, buffer_size); 1465 memcpy(buffer, &fw->data[4], fw->size - 4); 1466 1467 for (i = sizeof(struct ti_i2c_image_header); 1468 i < buffer_size; i++) { 1469 cs = (u8)(cs + buffer[i]); 1470 } 1471 1472 header = (struct ti_i2c_image_header *)buffer; 1473 1474 /* update length and checksum after padding */ 1475 header->Length = cpu_to_le16((u16)(buffer_size - 1476 sizeof(struct ti_i2c_image_header))); 1477 header->CheckSum = cs; 1478 1479 /* Download the operational code */ 1480 dev_dbg(dev, "%s - Downloading operational code image version %d.%d (TI UMP)\n", 1481 __func__, 1482 fw_hdr->major_version, fw_hdr->minor_version); 1483 status = download_code(serial, buffer, buffer_size); 1484 1485 kfree(buffer); 1486 1487 if (status) { 1488 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1489 return status; 1490 } 1491 1492 /* Device will reboot */ 1493 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1494 1495 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1496 1497 return 1; 1498 } 1499 1500stayinbootmode: 1501 /* Eprom is invalid or blank stay in boot mode */ 1502 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1503 serial->product_info.TiMode = TI_MODE_BOOT; 1504 1505 return 1; 1506} 1507 1508static int ti_do_config(struct edgeport_port *port, int feature, int on) 1509{ 1510 on = !!on; /* 1 or 0 not bitmask */ 1511 1512 return send_port_cmd(port->port, feature, on, NULL, 0); 1513} 1514 1515static int restore_mcr(struct edgeport_port *port, u8 mcr) 1516{ 1517 int status = 0; 1518 1519 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1520 1521 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1522 if (status) 1523 return status; 1524 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1525 if (status) 1526 return status; 1527 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1528} 1529 1530/* Convert TI LSR to standard UART flags */ 1531static u8 map_line_status(u8 ti_lsr) 1532{ 1533 u8 lsr = 0; 1534 1535#define MAP_FLAG(flagUmp, flagUart) \ 1536 if (ti_lsr & flagUmp) \ 1537 lsr |= flagUart; 1538 1539 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1540 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1541 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1542 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1543 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1544 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1545 1546#undef MAP_FLAG 1547 1548 return lsr; 1549} 1550 1551static void handle_new_msr(struct edgeport_port *edge_port, u8 msr) 1552{ 1553 struct async_icount *icount; 1554 struct tty_struct *tty; 1555 1556 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1557 1558 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1559 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1560 icount = &edge_port->port->icount; 1561 1562 /* update input line counters */ 1563 if (msr & EDGEPORT_MSR_DELTA_CTS) 1564 icount->cts++; 1565 if (msr & EDGEPORT_MSR_DELTA_DSR) 1566 icount->dsr++; 1567 if (msr & EDGEPORT_MSR_DELTA_CD) 1568 icount->dcd++; 1569 if (msr & EDGEPORT_MSR_DELTA_RI) 1570 icount->rng++; 1571 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1572 } 1573 1574 /* Save the new modem status */ 1575 edge_port->shadow_msr = msr & 0xf0; 1576 1577 tty = tty_port_tty_get(&edge_port->port->port); 1578 /* handle CTS flow control */ 1579 if (tty && C_CRTSCTS(tty)) { 1580 if (msr & EDGEPORT_MSR_CTS) 1581 tty_wakeup(tty); 1582 } 1583 tty_kref_put(tty); 1584} 1585 1586static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1587 u8 lsr, u8 data) 1588{ 1589 struct async_icount *icount; 1590 u8 new_lsr = (u8)(lsr & (u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1591 LSR_FRM_ERR | LSR_BREAK)); 1592 1593 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1594 1595 edge_port->shadow_lsr = lsr; 1596 1597 if (new_lsr & LSR_BREAK) 1598 /* 1599 * Parity and Framing errors only count if they 1600 * occur exclusive of a break being received. 1601 */ 1602 new_lsr &= (u8)(LSR_OVER_ERR | LSR_BREAK); 1603 1604 /* Place LSR data byte into Rx buffer */ 1605 if (lsr_data) 1606 edge_tty_recv(edge_port->port, &data, 1); 1607 1608 /* update input line counters */ 1609 icount = &edge_port->port->icount; 1610 if (new_lsr & LSR_BREAK) 1611 icount->brk++; 1612 if (new_lsr & LSR_OVER_ERR) 1613 icount->overrun++; 1614 if (new_lsr & LSR_PAR_ERR) 1615 icount->parity++; 1616 if (new_lsr & LSR_FRM_ERR) 1617 icount->frame++; 1618} 1619 1620static void edge_interrupt_callback(struct urb *urb) 1621{ 1622 struct edgeport_serial *edge_serial = urb->context; 1623 struct usb_serial_port *port; 1624 struct edgeport_port *edge_port; 1625 struct device *dev; 1626 unsigned char *data = urb->transfer_buffer; 1627 int length = urb->actual_length; 1628 int port_number; 1629 int function; 1630 int retval; 1631 u8 lsr; 1632 u8 msr; 1633 int status = urb->status; 1634 1635 switch (status) { 1636 case 0: 1637 /* success */ 1638 break; 1639 case -ECONNRESET: 1640 case -ENOENT: 1641 case -ESHUTDOWN: 1642 /* this urb is terminated, clean up */ 1643 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1644 __func__, status); 1645 return; 1646 default: 1647 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1648 "%d\n", __func__, status); 1649 goto exit; 1650 } 1651 1652 if (!length) { 1653 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1654 goto exit; 1655 } 1656 1657 dev = &edge_serial->serial->dev->dev; 1658 usb_serial_debug_data(dev, __func__, length, data); 1659 1660 if (length != 2) { 1661 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1662 goto exit; 1663 } 1664 1665 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1666 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1667 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1668 port_number, function, data[1]); 1669 1670 if (port_number >= edge_serial->serial->num_ports) { 1671 dev_err(dev, "bad port number %d\n", port_number); 1672 goto exit; 1673 } 1674 1675 port = edge_serial->serial->port[port_number]; 1676 edge_port = usb_get_serial_port_data(port); 1677 if (!edge_port) { 1678 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1679 return; 1680 } 1681 switch (function) { 1682 case TIUMP_INTERRUPT_CODE_LSR: 1683 lsr = map_line_status(data[1]); 1684 if (lsr & UMP_UART_LSR_DATA_MASK) { 1685 /* 1686 * Save the LSR event for bulk read completion routine 1687 */ 1688 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1689 __func__, port_number, lsr); 1690 edge_port->lsr_event = 1; 1691 edge_port->lsr_mask = lsr; 1692 } else { 1693 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1694 __func__, port_number, lsr); 1695 handle_new_lsr(edge_port, 0, lsr, 0); 1696 } 1697 break; 1698 1699 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1700 /* Copy MSR from UMP */ 1701 msr = data[1]; 1702 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1703 __func__, port_number, msr); 1704 handle_new_msr(edge_port, msr); 1705 break; 1706 1707 default: 1708 dev_err(&urb->dev->dev, 1709 "%s - Unknown Interrupt code from UMP %x\n", 1710 __func__, data[1]); 1711 break; 1712 1713 } 1714 1715exit: 1716 retval = usb_submit_urb(urb, GFP_ATOMIC); 1717 if (retval) 1718 dev_err(&urb->dev->dev, 1719 "%s - usb_submit_urb failed with result %d\n", 1720 __func__, retval); 1721} 1722 1723static void edge_bulk_in_callback(struct urb *urb) 1724{ 1725 struct edgeport_port *edge_port = urb->context; 1726 struct device *dev = &edge_port->port->dev; 1727 unsigned char *data = urb->transfer_buffer; 1728 unsigned long flags; 1729 int retval = 0; 1730 int port_number; 1731 int status = urb->status; 1732 1733 switch (status) { 1734 case 0: 1735 /* success */ 1736 break; 1737 case -ECONNRESET: 1738 case -ENOENT: 1739 case -ESHUTDOWN: 1740 /* this urb is terminated, clean up */ 1741 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1742 return; 1743 default: 1744 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1745 } 1746 1747 if (status == -EPIPE) 1748 goto exit; 1749 1750 if (status) { 1751 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1752 return; 1753 } 1754 1755 port_number = edge_port->port->port_number; 1756 1757 if (urb->actual_length > 0 && edge_port->lsr_event) { 1758 edge_port->lsr_event = 0; 1759 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1760 __func__, port_number, edge_port->lsr_mask, *data); 1761 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1762 /* Adjust buffer length/pointer */ 1763 --urb->actual_length; 1764 ++data; 1765 } 1766 1767 if (urb->actual_length) { 1768 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1769 if (edge_port->close_pending) 1770 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1771 __func__); 1772 else 1773 edge_tty_recv(edge_port->port, data, 1774 urb->actual_length); 1775 edge_port->port->icount.rx += urb->actual_length; 1776 } 1777 1778exit: 1779 /* continue read unless stopped */ 1780 spin_lock_irqsave(&edge_port->ep_lock, flags); 1781 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1782 retval = usb_submit_urb(urb, GFP_ATOMIC); 1783 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1784 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1785 1786 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1787 if (retval) 1788 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1789} 1790 1791static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1792 int length) 1793{ 1794 int queued; 1795 1796 queued = tty_insert_flip_string(&port->port, data, length); 1797 if (queued < length) 1798 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1799 __func__, length - queued); 1800 tty_flip_buffer_push(&port->port); 1801} 1802 1803static void edge_bulk_out_callback(struct urb *urb) 1804{ 1805 struct usb_serial_port *port = urb->context; 1806 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1807 int status = urb->status; 1808 struct tty_struct *tty; 1809 1810 edge_port->ep_write_urb_in_use = 0; 1811 1812 switch (status) { 1813 case 0: 1814 /* success */ 1815 break; 1816 case -ECONNRESET: 1817 case -ENOENT: 1818 case -ESHUTDOWN: 1819 /* this urb is terminated, clean up */ 1820 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1821 __func__, status); 1822 return; 1823 default: 1824 dev_err_console(port, "%s - nonzero write bulk status " 1825 "received: %d\n", __func__, status); 1826 } 1827 1828 /* send any buffered data */ 1829 tty = tty_port_tty_get(&port->port); 1830 edge_send(port, tty); 1831 tty_kref_put(tty); 1832} 1833 1834static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1835{ 1836 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1837 struct edgeport_serial *edge_serial; 1838 struct usb_device *dev; 1839 struct urb *urb; 1840 int status; 1841 u16 open_settings; 1842 u8 transaction_timeout; 1843 1844 if (edge_port == NULL) 1845 return -ENODEV; 1846 1847 dev = port->serial->dev; 1848 1849 /* turn off loopback */ 1850 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1851 if (status) { 1852 dev_err(&port->dev, 1853 "%s - cannot send clear loopback command, %d\n", 1854 __func__, status); 1855 return status; 1856 } 1857 1858 /* set up the port settings */ 1859 if (tty) 1860 edge_set_termios(tty, port, &tty->termios); 1861 1862 /* open up the port */ 1863 1864 /* milliseconds to timeout for DMA transfer */ 1865 transaction_timeout = 2; 1866 1867 edge_port->ump_read_timeout = 1868 max(20, ((transaction_timeout * 3) / 2)); 1869 1870 /* milliseconds to timeout for DMA transfer */ 1871 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1872 UMP_PIPE_TRANS_TIMEOUT_ENA | 1873 (transaction_timeout << 2)); 1874 1875 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1876 1877 /* Tell TI to open and start the port */ 1878 status = send_port_cmd(port, UMPC_OPEN_PORT, open_settings, NULL, 0); 1879 if (status) { 1880 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1881 __func__, status); 1882 return status; 1883 } 1884 1885 /* Start the DMA? */ 1886 status = send_port_cmd(port, UMPC_START_PORT, 0, NULL, 0); 1887 if (status) { 1888 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1889 __func__, status); 1890 return status; 1891 } 1892 1893 /* Clear TX and RX buffers in UMP */ 1894 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1895 if (status) { 1896 dev_err(&port->dev, 1897 "%s - cannot send clear buffers command, %d\n", 1898 __func__, status); 1899 return status; 1900 } 1901 1902 /* Read Initial MSR */ 1903 status = read_port_cmd(port, UMPC_READ_MSR, 0, &edge_port->shadow_msr, 1); 1904 if (status) { 1905 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1906 __func__, status); 1907 return status; 1908 } 1909 1910 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1911 1912 /* Set Initial MCR */ 1913 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1914 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1915 1916 edge_serial = edge_port->edge_serial; 1917 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1918 return -ERESTARTSYS; 1919 if (edge_serial->num_ports_open == 0) { 1920 /* we are the first port to open, post the interrupt urb */ 1921 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1922 urb->context = edge_serial; 1923 status = usb_submit_urb(urb, GFP_KERNEL); 1924 if (status) { 1925 dev_err(&port->dev, 1926 "%s - usb_submit_urb failed with value %d\n", 1927 __func__, status); 1928 goto release_es_lock; 1929 } 1930 } 1931 1932 /* 1933 * reset the data toggle on the bulk endpoints to work around bug in 1934 * host controllers where things get out of sync some times 1935 */ 1936 usb_clear_halt(dev, port->write_urb->pipe); 1937 usb_clear_halt(dev, port->read_urb->pipe); 1938 1939 /* start up our bulk read urb */ 1940 urb = port->read_urb; 1941 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1942 urb->context = edge_port; 1943 status = usb_submit_urb(urb, GFP_KERNEL); 1944 if (status) { 1945 dev_err(&port->dev, 1946 "%s - read bulk usb_submit_urb failed with value %d\n", 1947 __func__, status); 1948 goto unlink_int_urb; 1949 } 1950 1951 ++edge_serial->num_ports_open; 1952 1953 goto release_es_lock; 1954 1955unlink_int_urb: 1956 if (edge_port->edge_serial->num_ports_open == 0) 1957 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1958release_es_lock: 1959 mutex_unlock(&edge_serial->es_lock); 1960 return status; 1961} 1962 1963static void edge_close(struct usb_serial_port *port) 1964{ 1965 struct edgeport_serial *edge_serial; 1966 struct edgeport_port *edge_port; 1967 unsigned long flags; 1968 1969 edge_serial = usb_get_serial_data(port->serial); 1970 edge_port = usb_get_serial_port_data(port); 1971 if (edge_serial == NULL || edge_port == NULL) 1972 return; 1973 1974 /* 1975 * The bulkreadcompletion routine will check 1976 * this flag and dump add read data 1977 */ 1978 edge_port->close_pending = 1; 1979 1980 usb_kill_urb(port->read_urb); 1981 usb_kill_urb(port->write_urb); 1982 edge_port->ep_write_urb_in_use = 0; 1983 spin_lock_irqsave(&edge_port->ep_lock, flags); 1984 kfifo_reset_out(&port->write_fifo); 1985 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1986 1987 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1988 send_port_cmd(port, UMPC_CLOSE_PORT, 0, NULL, 0); 1989 1990 mutex_lock(&edge_serial->es_lock); 1991 --edge_port->edge_serial->num_ports_open; 1992 if (edge_port->edge_serial->num_ports_open <= 0) { 1993 /* last port is now closed, let's shut down our interrupt urb */ 1994 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1995 edge_port->edge_serial->num_ports_open = 0; 1996 } 1997 mutex_unlock(&edge_serial->es_lock); 1998 edge_port->close_pending = 0; 1999} 2000 2001static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2002 const unsigned char *data, int count) 2003{ 2004 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2005 2006 if (count == 0) { 2007 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2008 return 0; 2009 } 2010 2011 if (edge_port == NULL) 2012 return -ENODEV; 2013 if (edge_port->close_pending == 1) 2014 return -ENODEV; 2015 2016 count = kfifo_in_locked(&port->write_fifo, data, count, 2017 &edge_port->ep_lock); 2018 edge_send(port, tty); 2019 2020 return count; 2021} 2022 2023static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 2024{ 2025 int count, result; 2026 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2027 unsigned long flags; 2028 2029 spin_lock_irqsave(&edge_port->ep_lock, flags); 2030 2031 if (edge_port->ep_write_urb_in_use) { 2032 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2033 return; 2034 } 2035 2036 count = kfifo_out(&port->write_fifo, 2037 port->write_urb->transfer_buffer, 2038 port->bulk_out_size); 2039 2040 if (count == 0) { 2041 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2042 return; 2043 } 2044 2045 edge_port->ep_write_urb_in_use = 1; 2046 2047 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2048 2049 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2050 2051 /* set up our urb */ 2052 port->write_urb->transfer_buffer_length = count; 2053 2054 /* send the data out the bulk port */ 2055 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2056 if (result) { 2057 dev_err_console(port, 2058 "%s - failed submitting write urb, error %d\n", 2059 __func__, result); 2060 edge_port->ep_write_urb_in_use = 0; 2061 /* TODO: reschedule edge_send */ 2062 } else 2063 edge_port->port->icount.tx += count; 2064 2065 /* 2066 * wakeup any process waiting for writes to complete 2067 * there is now more room in the buffer for new writes 2068 */ 2069 if (tty) 2070 tty_wakeup(tty); 2071} 2072 2073static unsigned int edge_write_room(struct tty_struct *tty) 2074{ 2075 struct usb_serial_port *port = tty->driver_data; 2076 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2077 unsigned int room; 2078 unsigned long flags; 2079 2080 if (edge_port == NULL) 2081 return 0; 2082 if (edge_port->close_pending == 1) 2083 return 0; 2084 2085 spin_lock_irqsave(&edge_port->ep_lock, flags); 2086 room = kfifo_avail(&port->write_fifo); 2087 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2088 2089 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 2090 return room; 2091} 2092 2093static unsigned int edge_chars_in_buffer(struct tty_struct *tty) 2094{ 2095 struct usb_serial_port *port = tty->driver_data; 2096 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2097 unsigned int chars; 2098 unsigned long flags; 2099 if (edge_port == NULL) 2100 return 0; 2101 2102 spin_lock_irqsave(&edge_port->ep_lock, flags); 2103 chars = kfifo_len(&port->write_fifo); 2104 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2105 2106 dev_dbg(&port->dev, "%s - returns %u\n", __func__, chars); 2107 return chars; 2108} 2109 2110static bool edge_tx_empty(struct usb_serial_port *port) 2111{ 2112 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2113 int ret; 2114 2115 ret = tx_active(edge_port); 2116 if (ret > 0) 2117 return false; 2118 2119 return true; 2120} 2121 2122static void edge_throttle(struct tty_struct *tty) 2123{ 2124 struct usb_serial_port *port = tty->driver_data; 2125 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2126 int status; 2127 2128 if (edge_port == NULL) 2129 return; 2130 2131 /* if we are implementing XON/XOFF, send the stop character */ 2132 if (I_IXOFF(tty)) { 2133 unsigned char stop_char = STOP_CHAR(tty); 2134 status = edge_write(tty, port, &stop_char, 1); 2135 if (status <= 0) { 2136 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2137 } 2138 } 2139 2140 /* 2141 * if we are implementing RTS/CTS, stop reads 2142 * and the Edgeport will clear the RTS line 2143 */ 2144 if (C_CRTSCTS(tty)) 2145 stop_read(edge_port); 2146 2147} 2148 2149static void edge_unthrottle(struct tty_struct *tty) 2150{ 2151 struct usb_serial_port *port = tty->driver_data; 2152 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2153 int status; 2154 2155 if (edge_port == NULL) 2156 return; 2157 2158 /* if we are implementing XON/XOFF, send the start character */ 2159 if (I_IXOFF(tty)) { 2160 unsigned char start_char = START_CHAR(tty); 2161 status = edge_write(tty, port, &start_char, 1); 2162 if (status <= 0) { 2163 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2164 } 2165 } 2166 /* 2167 * if we are implementing RTS/CTS, restart reads 2168 * are the Edgeport will assert the RTS line 2169 */ 2170 if (C_CRTSCTS(tty)) { 2171 status = restart_read(edge_port); 2172 if (status) 2173 dev_err(&port->dev, 2174 "%s - read bulk usb_submit_urb failed: %d\n", 2175 __func__, status); 2176 } 2177 2178} 2179 2180static void stop_read(struct edgeport_port *edge_port) 2181{ 2182 unsigned long flags; 2183 2184 spin_lock_irqsave(&edge_port->ep_lock, flags); 2185 2186 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2187 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2188 edge_port->shadow_mcr &= ~MCR_RTS; 2189 2190 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2191} 2192 2193static int restart_read(struct edgeport_port *edge_port) 2194{ 2195 struct urb *urb; 2196 int status = 0; 2197 unsigned long flags; 2198 2199 spin_lock_irqsave(&edge_port->ep_lock, flags); 2200 2201 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2202 urb = edge_port->port->read_urb; 2203 status = usb_submit_urb(urb, GFP_ATOMIC); 2204 } 2205 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2206 edge_port->shadow_mcr |= MCR_RTS; 2207 2208 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2209 2210 return status; 2211} 2212 2213static void change_port_settings(struct tty_struct *tty, 2214 struct edgeport_port *edge_port, const struct ktermios *old_termios) 2215{ 2216 struct device *dev = &edge_port->port->dev; 2217 struct ump_uart_config *config; 2218 int baud; 2219 unsigned cflag; 2220 int status; 2221 2222 config = kmalloc (sizeof (*config), GFP_KERNEL); 2223 if (!config) { 2224 tty->termios = *old_termios; 2225 return; 2226 } 2227 2228 cflag = tty->termios.c_cflag; 2229 2230 config->wFlags = 0; 2231 2232 /* These flags must be set */ 2233 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2234 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2235 config->bUartMode = (u8)(edge_port->bUartMode); 2236 2237 switch (cflag & CSIZE) { 2238 case CS5: 2239 config->bDataBits = UMP_UART_CHAR5BITS; 2240 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2241 break; 2242 case CS6: 2243 config->bDataBits = UMP_UART_CHAR6BITS; 2244 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2245 break; 2246 case CS7: 2247 config->bDataBits = UMP_UART_CHAR7BITS; 2248 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2249 break; 2250 default: 2251 case CS8: 2252 config->bDataBits = UMP_UART_CHAR8BITS; 2253 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2254 break; 2255 } 2256 2257 if (cflag & PARENB) { 2258 if (cflag & PARODD) { 2259 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2260 config->bParity = UMP_UART_ODDPARITY; 2261 dev_dbg(dev, "%s - parity = odd\n", __func__); 2262 } else { 2263 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2264 config->bParity = UMP_UART_EVENPARITY; 2265 dev_dbg(dev, "%s - parity = even\n", __func__); 2266 } 2267 } else { 2268 config->bParity = UMP_UART_NOPARITY; 2269 dev_dbg(dev, "%s - parity = none\n", __func__); 2270 } 2271 2272 if (cflag & CSTOPB) { 2273 config->bStopBits = UMP_UART_STOPBIT2; 2274 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2275 } else { 2276 config->bStopBits = UMP_UART_STOPBIT1; 2277 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2278 } 2279 2280 /* figure out the flow control settings */ 2281 if (cflag & CRTSCTS) { 2282 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2283 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2284 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2285 } else { 2286 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2287 restart_read(edge_port); 2288 } 2289 2290 /* 2291 * if we are implementing XON/XOFF, set the start and stop 2292 * character in the device 2293 */ 2294 config->cXon = START_CHAR(tty); 2295 config->cXoff = STOP_CHAR(tty); 2296 2297 /* if we are implementing INBOUND XON/XOFF */ 2298 if (I_IXOFF(tty)) { 2299 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2300 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2301 __func__, config->cXon, config->cXoff); 2302 } else 2303 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2304 2305 /* if we are implementing OUTBOUND XON/XOFF */ 2306 if (I_IXON(tty)) { 2307 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2308 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2309 __func__, config->cXon, config->cXoff); 2310 } else 2311 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2312 2313 tty->termios.c_cflag &= ~CMSPAR; 2314 2315 /* Round the baud rate */ 2316 baud = tty_get_baud_rate(tty); 2317 if (!baud) { 2318 /* pick a default, any default... */ 2319 baud = 9600; 2320 } else { 2321 /* Avoid a zero divisor. */ 2322 baud = min(baud, 461550); 2323 tty_encode_baud_rate(tty, baud, baud); 2324 } 2325 2326 edge_port->baud_rate = baud; 2327 config->wBaudRate = (u16)((461550L + baud/2) / baud); 2328 2329 /* FIXME: Recompute actual baud from divisor here */ 2330 2331 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2332 2333 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2334 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2335 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2336 dev_dbg(dev, "bParity: %d\n", config->bParity); 2337 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2338 dev_dbg(dev, "cXon: %d\n", config->cXon); 2339 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2340 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2341 2342 /* move the word values into big endian mode */ 2343 cpu_to_be16s(&config->wFlags); 2344 cpu_to_be16s(&config->wBaudRate); 2345 2346 status = send_port_cmd(edge_port->port, UMPC_SET_CONFIG, 0, config, 2347 sizeof(*config)); 2348 if (status) 2349 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2350 __func__, status); 2351 kfree(config); 2352} 2353 2354static void edge_set_termios(struct tty_struct *tty, 2355 struct usb_serial_port *port, 2356 const struct ktermios *old_termios) 2357{ 2358 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2359 2360 if (edge_port == NULL) 2361 return; 2362 /* change the port settings to the new ones specified */ 2363 change_port_settings(tty, edge_port, old_termios); 2364} 2365 2366static int edge_tiocmset(struct tty_struct *tty, 2367 unsigned int set, unsigned int clear) 2368{ 2369 struct usb_serial_port *port = tty->driver_data; 2370 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2371 unsigned int mcr; 2372 unsigned long flags; 2373 2374 spin_lock_irqsave(&edge_port->ep_lock, flags); 2375 mcr = edge_port->shadow_mcr; 2376 if (set & TIOCM_RTS) 2377 mcr |= MCR_RTS; 2378 if (set & TIOCM_DTR) 2379 mcr |= MCR_DTR; 2380 if (set & TIOCM_LOOP) 2381 mcr |= MCR_LOOPBACK; 2382 2383 if (clear & TIOCM_RTS) 2384 mcr &= ~MCR_RTS; 2385 if (clear & TIOCM_DTR) 2386 mcr &= ~MCR_DTR; 2387 if (clear & TIOCM_LOOP) 2388 mcr &= ~MCR_LOOPBACK; 2389 2390 edge_port->shadow_mcr = mcr; 2391 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2392 2393 restore_mcr(edge_port, mcr); 2394 return 0; 2395} 2396 2397static int edge_tiocmget(struct tty_struct *tty) 2398{ 2399 struct usb_serial_port *port = tty->driver_data; 2400 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2401 unsigned int result = 0; 2402 unsigned int msr; 2403 unsigned int mcr; 2404 unsigned long flags; 2405 2406 spin_lock_irqsave(&edge_port->ep_lock, flags); 2407 2408 msr = edge_port->shadow_msr; 2409 mcr = edge_port->shadow_mcr; 2410 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2411 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2412 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2413 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2414 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2415 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2416 2417 2418 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2419 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2420 2421 return result; 2422} 2423 2424static int edge_break(struct tty_struct *tty, int break_state) 2425{ 2426 struct usb_serial_port *port = tty->driver_data; 2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2428 int status; 2429 int bv = 0; /* Off */ 2430 2431 if (break_state == -1) 2432 bv = 1; /* On */ 2433 2434 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2435 if (status) { 2436 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2437 __func__, status); 2438 return status; 2439 } 2440 2441 return 0; 2442} 2443 2444static void edge_heartbeat_schedule(struct edgeport_serial *edge_serial) 2445{ 2446 if (!edge_serial->use_heartbeat) 2447 return; 2448 2449 schedule_delayed_work(&edge_serial->heartbeat_work, 2450 FW_HEARTBEAT_SECS * HZ); 2451} 2452 2453static void edge_heartbeat_work(struct work_struct *work) 2454{ 2455 struct edgeport_serial *serial; 2456 struct ti_i2c_desc *rom_desc; 2457 2458 serial = container_of(work, struct edgeport_serial, 2459 heartbeat_work.work); 2460 2461 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 2462 2463 /* Descriptor address request is enough to reset the firmware timer */ 2464 if (!rom_desc || !get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 2465 rom_desc)) { 2466 dev_err(&serial->serial->interface->dev, 2467 "%s - Incomplete heartbeat\n", __func__); 2468 } 2469 kfree(rom_desc); 2470 2471 edge_heartbeat_schedule(serial); 2472} 2473 2474static int edge_calc_num_ports(struct usb_serial *serial, 2475 struct usb_serial_endpoints *epds) 2476{ 2477 struct device *dev = &serial->interface->dev; 2478 unsigned char num_ports = serial->type->num_ports; 2479 2480 /* Make sure we have the required endpoints when in download mode. */ 2481 if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { 2482 if (epds->num_bulk_in < num_ports || 2483 epds->num_bulk_out < num_ports || 2484 epds->num_interrupt_in < 1) { 2485 dev_err(dev, "required endpoints missing\n"); 2486 return -ENODEV; 2487 } 2488 } 2489 2490 return num_ports; 2491} 2492 2493static int edge_startup(struct usb_serial *serial) 2494{ 2495 struct edgeport_serial *edge_serial; 2496 int status; 2497 u16 product_id; 2498 2499 /* create our private serial structure */ 2500 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2501 if (!edge_serial) 2502 return -ENOMEM; 2503 2504 mutex_init(&edge_serial->es_lock); 2505 edge_serial->serial = serial; 2506 INIT_DELAYED_WORK(&edge_serial->heartbeat_work, edge_heartbeat_work); 2507 usb_set_serial_data(serial, edge_serial); 2508 2509 status = download_fw(edge_serial); 2510 if (status < 0) { 2511 kfree(edge_serial); 2512 return status; 2513 } 2514 2515 if (status > 0) 2516 return 1; /* bind but do not register any ports */ 2517 2518 product_id = le16_to_cpu( 2519 edge_serial->serial->dev->descriptor.idProduct); 2520 2521 /* Currently only the EP/416 models require heartbeat support */ 2522 if (edge_serial->fw_version > FW_HEARTBEAT_VERSION_CUTOFF) { 2523 if (product_id == ION_DEVICE_ID_TI_EDGEPORT_416 || 2524 product_id == ION_DEVICE_ID_TI_EDGEPORT_416B) { 2525 edge_serial->use_heartbeat = true; 2526 } 2527 } 2528 2529 edge_heartbeat_schedule(edge_serial); 2530 2531 return 0; 2532} 2533 2534static void edge_disconnect(struct usb_serial *serial) 2535{ 2536 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2537 2538 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2539} 2540 2541static void edge_release(struct usb_serial *serial) 2542{ 2543 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2544 2545 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2546 kfree(edge_serial); 2547} 2548 2549static int edge_port_probe(struct usb_serial_port *port) 2550{ 2551 struct edgeport_port *edge_port; 2552 int ret; 2553 2554 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2555 if (!edge_port) 2556 return -ENOMEM; 2557 2558 spin_lock_init(&edge_port->ep_lock); 2559 edge_port->port = port; 2560 edge_port->edge_serial = usb_get_serial_data(port->serial); 2561 edge_port->bUartMode = default_uart_mode; 2562 2563 switch (port->port_number) { 2564 case 0: 2565 edge_port->uart_base = UMPMEM_BASE_UART1; 2566 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 2567 break; 2568 case 1: 2569 edge_port->uart_base = UMPMEM_BASE_UART2; 2570 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 2571 break; 2572 default: 2573 dev_err(&port->dev, "unknown port number\n"); 2574 ret = -ENODEV; 2575 goto err; 2576 } 2577 2578 dev_dbg(&port->dev, 2579 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 2580 __func__, port->port_number, edge_port->uart_base, 2581 edge_port->dma_address); 2582 2583 usb_set_serial_port_data(port, edge_port); 2584 2585 ret = edge_create_sysfs_attrs(port); 2586 if (ret) 2587 goto err; 2588 2589 /* 2590 * The LSR does not tell when the transmitter shift register has 2591 * emptied so add a one-character drain delay. 2592 */ 2593 port->port.drain_delay = 1; 2594 2595 return 0; 2596err: 2597 kfree(edge_port); 2598 2599 return ret; 2600} 2601 2602static void edge_port_remove(struct usb_serial_port *port) 2603{ 2604 struct edgeport_port *edge_port; 2605 2606 edge_port = usb_get_serial_port_data(port); 2607 edge_remove_sysfs_attrs(port); 2608 kfree(edge_port); 2609} 2610 2611/* Sysfs Attributes */ 2612 2613static ssize_t uart_mode_show(struct device *dev, 2614 struct device_attribute *attr, char *buf) 2615{ 2616 struct usb_serial_port *port = to_usb_serial_port(dev); 2617 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2618 2619 return sprintf(buf, "%d\n", edge_port->bUartMode); 2620} 2621 2622static ssize_t uart_mode_store(struct device *dev, 2623 struct device_attribute *attr, const char *valbuf, size_t count) 2624{ 2625 struct usb_serial_port *port = to_usb_serial_port(dev); 2626 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2627 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2628 2629 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2630 2631 if (v < 256) 2632 edge_port->bUartMode = v; 2633 else 2634 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2635 2636 return count; 2637} 2638static DEVICE_ATTR_RW(uart_mode); 2639 2640static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2641{ 2642 return device_create_file(&port->dev, &dev_attr_uart_mode); 2643} 2644 2645static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2646{ 2647 device_remove_file(&port->dev, &dev_attr_uart_mode); 2648 return 0; 2649} 2650 2651#ifdef CONFIG_PM 2652static int edge_suspend(struct usb_serial *serial, pm_message_t message) 2653{ 2654 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2655 2656 cancel_delayed_work_sync(&edge_serial->heartbeat_work); 2657 2658 return 0; 2659} 2660 2661static int edge_resume(struct usb_serial *serial) 2662{ 2663 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2664 2665 edge_heartbeat_schedule(edge_serial); 2666 2667 return 0; 2668} 2669#endif 2670 2671static struct usb_serial_driver edgeport_1port_device = { 2672 .driver = { 2673 .owner = THIS_MODULE, 2674 .name = "edgeport_ti_1", 2675 }, 2676 .description = "Edgeport TI 1 port adapter", 2677 .id_table = edgeport_1port_id_table, 2678 .num_ports = 1, 2679 .num_bulk_out = 1, 2680 .open = edge_open, 2681 .close = edge_close, 2682 .throttle = edge_throttle, 2683 .unthrottle = edge_unthrottle, 2684 .attach = edge_startup, 2685 .calc_num_ports = edge_calc_num_ports, 2686 .disconnect = edge_disconnect, 2687 .release = edge_release, 2688 .port_probe = edge_port_probe, 2689 .port_remove = edge_port_remove, 2690 .set_termios = edge_set_termios, 2691 .tiocmget = edge_tiocmget, 2692 .tiocmset = edge_tiocmset, 2693 .tiocmiwait = usb_serial_generic_tiocmiwait, 2694 .get_icount = usb_serial_generic_get_icount, 2695 .write = edge_write, 2696 .write_room = edge_write_room, 2697 .chars_in_buffer = edge_chars_in_buffer, 2698 .tx_empty = edge_tx_empty, 2699 .break_ctl = edge_break, 2700 .read_int_callback = edge_interrupt_callback, 2701 .read_bulk_callback = edge_bulk_in_callback, 2702 .write_bulk_callback = edge_bulk_out_callback, 2703#ifdef CONFIG_PM 2704 .suspend = edge_suspend, 2705 .resume = edge_resume, 2706#endif 2707}; 2708 2709static struct usb_serial_driver edgeport_2port_device = { 2710 .driver = { 2711 .owner = THIS_MODULE, 2712 .name = "edgeport_ti_2", 2713 }, 2714 .description = "Edgeport TI 2 port adapter", 2715 .id_table = edgeport_2port_id_table, 2716 .num_ports = 2, 2717 .num_bulk_out = 1, 2718 .open = edge_open, 2719 .close = edge_close, 2720 .throttle = edge_throttle, 2721 .unthrottle = edge_unthrottle, 2722 .attach = edge_startup, 2723 .calc_num_ports = edge_calc_num_ports, 2724 .disconnect = edge_disconnect, 2725 .release = edge_release, 2726 .port_probe = edge_port_probe, 2727 .port_remove = edge_port_remove, 2728 .set_termios = edge_set_termios, 2729 .tiocmget = edge_tiocmget, 2730 .tiocmset = edge_tiocmset, 2731 .tiocmiwait = usb_serial_generic_tiocmiwait, 2732 .get_icount = usb_serial_generic_get_icount, 2733 .write = edge_write, 2734 .write_room = edge_write_room, 2735 .chars_in_buffer = edge_chars_in_buffer, 2736 .tx_empty = edge_tx_empty, 2737 .break_ctl = edge_break, 2738 .read_int_callback = edge_interrupt_callback, 2739 .read_bulk_callback = edge_bulk_in_callback, 2740 .write_bulk_callback = edge_bulk_out_callback, 2741#ifdef CONFIG_PM 2742 .suspend = edge_suspend, 2743 .resume = edge_resume, 2744#endif 2745}; 2746 2747static struct usb_serial_driver * const serial_drivers[] = { 2748 &edgeport_1port_device, &edgeport_2port_device, NULL 2749}; 2750 2751module_usb_serial_driver(serial_drivers, id_table_combined); 2752 2753MODULE_AUTHOR(DRIVER_AUTHOR); 2754MODULE_DESCRIPTION(DRIVER_DESC); 2755MODULE_LICENSE("GPL"); 2756MODULE_FIRMWARE("edgeport/down3.bin"); 2757 2758module_param(ignore_cpu_rev, bool, 0644); 2759MODULE_PARM_DESC(ignore_cpu_rev, 2760 "Ignore the cpu revision when connecting to a device"); 2761 2762module_param(default_uart_mode, int, 0644); 2763MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2764