io_ti.c revision 77de2518e854501c1542199449354fab4b2377ac
1/* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT 14 * 15 * For questions or problems with this driver, contact Inside Out 16 * Networks technical support, or Peter Berger <pberger@brimson.com>, 17 * or Al Borchers <alborchers@steinerpoint.com>. 18 */ 19 20#include <linux/kernel.h> 21#include <linux/jiffies.h> 22#include <linux/errno.h> 23#include <linux/init.h> 24#include <linux/slab.h> 25#include <linux/tty.h> 26#include <linux/tty_driver.h> 27#include <linux/tty_flip.h> 28#include <linux/module.h> 29#include <linux/spinlock.h> 30#include <linux/mutex.h> 31#include <linux/serial.h> 32#include <linux/kfifo.h> 33#include <linux/ioctl.h> 34#include <linux/firmware.h> 35#include <linux/uaccess.h> 36#include <linux/usb.h> 37#include <linux/usb/serial.h> 38 39#include "io_16654.h" 40#include "io_usbvend.h" 41#include "io_ti.h" 42 43#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 44#define DRIVER_DESC "Edgeport USB Serial Driver" 45 46#define EPROM_PAGE_SIZE 64 47 48 49/* different hardware types */ 50#define HARDWARE_TYPE_930 0 51#define HARDWARE_TYPE_TIUMP 1 52 53/* IOCTL_PRIVATE_TI_GET_MODE Definitions */ 54#define TI_MODE_CONFIGURING 0 /* Device has not entered start device */ 55#define TI_MODE_BOOT 1 /* Staying in boot mode */ 56#define TI_MODE_DOWNLOAD 2 /* Made it to download mode */ 57#define TI_MODE_TRANSITIONING 3 /* Currently in boot mode but 58 transitioning to download mode */ 59 60/* read urb state */ 61#define EDGE_READ_URB_RUNNING 0 62#define EDGE_READ_URB_STOPPING 1 63#define EDGE_READ_URB_STOPPED 2 64 65#define EDGE_CLOSING_WAIT 4000 /* in .01 sec */ 66 67#define EDGE_OUT_BUF_SIZE 1024 68 69 70/* Product information read from the Edgeport */ 71struct product_info { 72 int TiMode; /* Current TI Mode */ 73 __u8 hardware_type; /* Type of hardware */ 74} __attribute__((packed)); 75 76struct edgeport_port { 77 __u16 uart_base; 78 __u16 dma_address; 79 __u8 shadow_msr; 80 __u8 shadow_mcr; 81 __u8 shadow_lsr; 82 __u8 lsr_mask; 83 __u32 ump_read_timeout; /* Number of milliseconds the UMP will 84 wait without data before completing 85 a read short */ 86 int baud_rate; 87 int close_pending; 88 int lsr_event; 89 struct async_icount icount; 90 wait_queue_head_t delta_msr_wait; /* for handling sleeping while 91 waiting for msr change to 92 happen */ 93 struct edgeport_serial *edge_serial; 94 struct usb_serial_port *port; 95 __u8 bUartMode; /* Port type, 0: RS232, etc. */ 96 spinlock_t ep_lock; 97 int ep_read_urb_state; 98 int ep_write_urb_in_use; 99 struct kfifo write_fifo; 100}; 101 102struct edgeport_serial { 103 struct product_info product_info; 104 u8 TI_I2C_Type; /* Type of I2C in UMP */ 105 u8 TiReadI2C; /* Set to TRUE if we have read the 106 I2c in Boot Mode */ 107 struct mutex es_lock; 108 int num_ports_open; 109 struct usb_serial *serial; 110}; 111 112 113/* Devices that this driver supports */ 114static const struct usb_device_id edgeport_1port_id_table[] = { 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 128 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 129 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 130 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 131 { } 132}; 133 134static const struct usb_device_id edgeport_2port_id_table[] = { 135 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 136 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 137 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 138 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 139 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 140 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 141 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 142 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 143 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 144 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 145 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 146 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 147 /* The 4, 8 and 16 port devices show up as multiple 2 port devices */ 148 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 149 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 150 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 151 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 152 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 153 { } 154}; 155 156/* Devices that this driver supports */ 157static const struct usb_device_id id_table_combined[] = { 158 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) }, 159 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) }, 160 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) }, 161 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) }, 162 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) }, 163 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) }, 164 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) }, 165 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) }, 166 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) }, 167 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) }, 168 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) }, 169 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) }, 170 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) }, 171 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) }, 172 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) }, 173 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) }, 174 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) }, 175 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) }, 176 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) }, 177 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) }, 178 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) }, 179 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) }, 180 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) }, 181 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) }, 182 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) }, 183 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) }, 184 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) }, 185 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) }, 186 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) }, 187 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) }, 188 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) }, 189 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) }, 190 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) }, 191 { } 192}; 193 194MODULE_DEVICE_TABLE(usb, id_table_combined); 195 196static unsigned char OperationalMajorVersion; 197static unsigned char OperationalMinorVersion; 198static unsigned short OperationalBuildNumber; 199 200static int closing_wait = EDGE_CLOSING_WAIT; 201static bool ignore_cpu_rev; 202static int default_uart_mode; /* RS232 */ 203 204static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 205 unsigned char *data, int length); 206 207static void stop_read(struct edgeport_port *edge_port); 208static int restart_read(struct edgeport_port *edge_port); 209 210static void edge_set_termios(struct tty_struct *tty, 211 struct usb_serial_port *port, struct ktermios *old_termios); 212static void edge_send(struct tty_struct *tty); 213 214/* sysfs attributes */ 215static int edge_create_sysfs_attrs(struct usb_serial_port *port); 216static int edge_remove_sysfs_attrs(struct usb_serial_port *port); 217 218 219static int ti_vread_sync(struct usb_device *dev, __u8 request, 220 __u16 value, __u16 index, u8 *data, int size) 221{ 222 int status; 223 224 status = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), request, 225 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN), 226 value, index, data, size, 1000); 227 if (status < 0) 228 return status; 229 if (status != size) { 230 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 231 __func__, size, status); 232 return -ECOMM; 233 } 234 return 0; 235} 236 237static int ti_vsend_sync(struct usb_device *dev, __u8 request, 238 __u16 value, __u16 index, u8 *data, int size) 239{ 240 int status; 241 242 status = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), request, 243 (USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT), 244 value, index, data, size, 1000); 245 if (status < 0) 246 return status; 247 if (status != size) { 248 dev_dbg(&dev->dev, "%s - wanted to write %d, but only wrote %d\n", 249 __func__, size, status); 250 return -ECOMM; 251 } 252 return 0; 253} 254 255static int send_cmd(struct usb_device *dev, __u8 command, 256 __u8 moduleid, __u16 value, u8 *data, 257 int size) 258{ 259 return ti_vsend_sync(dev, command, value, moduleid, data, size); 260} 261 262/* clear tx/rx buffers and fifo in TI UMP */ 263static int purge_port(struct usb_serial_port *port, __u16 mask) 264{ 265 int port_number = port->number - port->serial->minor; 266 267 dev_dbg(&port->dev, "%s - port %d, mask %x\n", __func__, port_number, mask); 268 269 return send_cmd(port->serial->dev, 270 UMPC_PURGE_PORT, 271 (__u8)(UMPM_UART1_PORT + port_number), 272 mask, 273 NULL, 274 0); 275} 276 277/** 278 * read_download_mem - Read edgeport memory from TI chip 279 * @dev: usb device pointer 280 * @start_address: Device CPU address at which to read 281 * @length: Length of above data 282 * @address_type: Can read both XDATA and I2C 283 * @buffer: pointer to input data buffer 284 */ 285static int read_download_mem(struct usb_device *dev, int start_address, 286 int length, __u8 address_type, __u8 *buffer) 287{ 288 int status = 0; 289 __u8 read_length; 290 __be16 be_start_address; 291 292 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, length); 293 294 /* Read in blocks of 64 bytes 295 * (TI firmware can't handle more than 64 byte reads) 296 */ 297 while (length) { 298 if (length > 64) 299 read_length = 64; 300 else 301 read_length = (__u8)length; 302 303 if (read_length > 1) { 304 dev_dbg(&dev->dev, "%s - @ %x for %d\n", __func__, start_address, read_length); 305 } 306 be_start_address = cpu_to_be16(start_address); 307 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 308 (__u16)address_type, 309 (__force __u16)be_start_address, 310 buffer, read_length); 311 312 if (status) { 313 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 314 return status; 315 } 316 317 if (read_length > 1) 318 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 319 320 /* Update pointers/length */ 321 start_address += read_length; 322 buffer += read_length; 323 length -= read_length; 324 } 325 326 return status; 327} 328 329static int read_ram(struct usb_device *dev, int start_address, 330 int length, __u8 *buffer) 331{ 332 return read_download_mem(dev, start_address, length, 333 DTK_ADDR_SPACE_XDATA, buffer); 334} 335 336/* Read edgeport memory to a given block */ 337static int read_boot_mem(struct edgeport_serial *serial, 338 int start_address, int length, __u8 *buffer) 339{ 340 int status = 0; 341 int i; 342 343 for (i = 0; i < length; i++) { 344 status = ti_vread_sync(serial->serial->dev, 345 UMPC_MEMORY_READ, serial->TI_I2C_Type, 346 (__u16)(start_address+i), &buffer[i], 0x01); 347 if (status) { 348 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 349 return status; 350 } 351 } 352 353 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 354 __func__, start_address, length); 355 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 356 357 serial->TiReadI2C = 1; 358 359 return status; 360} 361 362/* Write given block to TI EPROM memory */ 363static int write_boot_mem(struct edgeport_serial *serial, 364 int start_address, int length, __u8 *buffer) 365{ 366 int status = 0; 367 int i; 368 u8 *temp; 369 370 /* Must do a read before write */ 371 if (!serial->TiReadI2C) { 372 temp = kmalloc(1, GFP_KERNEL); 373 if (!temp) { 374 dev_err(&serial->serial->dev->dev, 375 "%s - out of memory\n", __func__); 376 return -ENOMEM; 377 } 378 status = read_boot_mem(serial, 0, 1, temp); 379 kfree(temp); 380 if (status) 381 return status; 382 } 383 384 for (i = 0; i < length; ++i) { 385 status = ti_vsend_sync(serial->serial->dev, 386 UMPC_MEMORY_WRITE, buffer[i], 387 (__u16)(i + start_address), NULL, 0); 388 if (status) 389 return status; 390 } 391 392 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 393 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 394 395 return status; 396} 397 398 399/* Write edgeport I2C memory to TI chip */ 400static int write_i2c_mem(struct edgeport_serial *serial, 401 int start_address, int length, __u8 address_type, __u8 *buffer) 402{ 403 struct device *dev = &serial->serial->dev->dev; 404 int status = 0; 405 int write_length; 406 __be16 be_start_address; 407 408 /* We can only send a maximum of 1 aligned byte page at a time */ 409 410 /* calculate the number of bytes left in the first page */ 411 write_length = EPROM_PAGE_SIZE - 412 (start_address & (EPROM_PAGE_SIZE - 1)); 413 414 if (write_length > length) 415 write_length = length; 416 417 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 418 __func__, start_address, write_length); 419 usb_serial_debug_data(dev, __func__, write_length, buffer); 420 421 /* Write first page */ 422 be_start_address = cpu_to_be16(start_address); 423 status = ti_vsend_sync(serial->serial->dev, 424 UMPC_MEMORY_WRITE, (__u16)address_type, 425 (__force __u16)be_start_address, 426 buffer, write_length); 427 if (status) { 428 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 429 return status; 430 } 431 432 length -= write_length; 433 start_address += write_length; 434 buffer += write_length; 435 436 /* We should be aligned now -- can write 437 max page size bytes at a time */ 438 while (length) { 439 if (length > EPROM_PAGE_SIZE) 440 write_length = EPROM_PAGE_SIZE; 441 else 442 write_length = length; 443 444 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 445 __func__, start_address, write_length); 446 usb_serial_debug_data(dev, __func__, write_length, buffer); 447 448 /* Write next page */ 449 be_start_address = cpu_to_be16(start_address); 450 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 451 (__u16)address_type, 452 (__force __u16)be_start_address, 453 buffer, write_length); 454 if (status) { 455 dev_err(dev, "%s - ERROR %d\n", __func__, status); 456 return status; 457 } 458 459 length -= write_length; 460 start_address += write_length; 461 buffer += write_length; 462 } 463 return status; 464} 465 466/* Examine the UMP DMA registers and LSR 467 * 468 * Check the MSBit of the X and Y DMA byte count registers. 469 * A zero in this bit indicates that the TX DMA buffers are empty 470 * then check the TX Empty bit in the UART. 471 */ 472static int tx_active(struct edgeport_port *port) 473{ 474 int status; 475 struct out_endpoint_desc_block *oedb; 476 __u8 *lsr; 477 int bytes_left = 0; 478 479 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 480 if (!oedb) { 481 dev_err(&port->port->dev, "%s - out of memory\n", __func__); 482 return -ENOMEM; 483 } 484 485 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 486 as not all platforms can do DMA 487 from stack */ 488 if (!lsr) { 489 kfree(oedb); 490 return -ENOMEM; 491 } 492 /* Read the DMA Count Registers */ 493 status = read_ram(port->port->serial->dev, port->dma_address, 494 sizeof(*oedb), (void *)oedb); 495 if (status) 496 goto exit_is_tx_active; 497 498 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 499 500 /* and the LSR */ 501 status = read_ram(port->port->serial->dev, 502 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 503 504 if (status) 505 goto exit_is_tx_active; 506 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 507 508 /* If either buffer has data or we are transmitting then return TRUE */ 509 if ((oedb->XByteCount & 0x80) != 0) 510 bytes_left += 64; 511 512 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 513 bytes_left += 1; 514 515 /* We return Not Active if we get any kind of error */ 516exit_is_tx_active: 517 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 518 519 kfree(lsr); 520 kfree(oedb); 521 return bytes_left; 522} 523 524static void chase_port(struct edgeport_port *port, unsigned long timeout) 525{ 526 int baud_rate; 527 struct tty_struct *tty = tty_port_tty_get(&port->port->port); 528 struct usb_serial *serial = port->port->serial; 529 wait_queue_t wait; 530 unsigned long flags; 531 532 if (!timeout) 533 timeout = (HZ * EDGE_CLOSING_WAIT)/100; 534 535 /* wait for data to drain from the buffer */ 536 spin_lock_irqsave(&port->ep_lock, flags); 537 init_waitqueue_entry(&wait, current); 538 add_wait_queue(&tty->write_wait, &wait); 539 for (;;) { 540 set_current_state(TASK_INTERRUPTIBLE); 541 if (kfifo_len(&port->write_fifo) == 0 542 || timeout == 0 || signal_pending(current) 543 || serial->disconnected) 544 /* disconnect */ 545 break; 546 spin_unlock_irqrestore(&port->ep_lock, flags); 547 timeout = schedule_timeout(timeout); 548 spin_lock_irqsave(&port->ep_lock, flags); 549 } 550 set_current_state(TASK_RUNNING); 551 remove_wait_queue(&tty->write_wait, &wait); 552 spin_unlock_irqrestore(&port->ep_lock, flags); 553 tty_kref_put(tty); 554 555 /* wait for data to drain from the device */ 556 timeout += jiffies; 557 while ((long)(jiffies - timeout) < 0 && !signal_pending(current) 558 && !serial->disconnected) { 559 /* not disconnected */ 560 if (!tx_active(port)) 561 break; 562 msleep(10); 563 } 564 565 /* disconnected */ 566 if (serial->disconnected) 567 return; 568 569 /* wait one more character time, based on baud rate */ 570 /* (tx_active doesn't seem to wait for the last byte) */ 571 baud_rate = port->baud_rate; 572 if (baud_rate == 0) 573 baud_rate = 50; 574 msleep(max(1, DIV_ROUND_UP(10000, baud_rate))); 575} 576 577static int choose_config(struct usb_device *dev) 578{ 579 /* 580 * There may be multiple configurations on this device, in which case 581 * we would need to read and parse all of them to find out which one 582 * we want. However, we just support one config at this point, 583 * configuration # 1, which is Config Descriptor 0. 584 */ 585 586 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 587 __func__, dev->config->desc.bNumInterfaces); 588 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 589 __func__, dev->config->desc.bMaxPower * 2); 590 591 if (dev->config->desc.bNumInterfaces != 1) { 592 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 593 return -ENODEV; 594 } 595 596 return 0; 597} 598 599static int read_rom(struct edgeport_serial *serial, 600 int start_address, int length, __u8 *buffer) 601{ 602 int status; 603 604 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 605 status = read_download_mem(serial->serial->dev, 606 start_address, 607 length, 608 serial->TI_I2C_Type, 609 buffer); 610 } else { 611 status = read_boot_mem(serial, start_address, length, 612 buffer); 613 } 614 return status; 615} 616 617static int write_rom(struct edgeport_serial *serial, int start_address, 618 int length, __u8 *buffer) 619{ 620 if (serial->product_info.TiMode == TI_MODE_BOOT) 621 return write_boot_mem(serial, start_address, length, 622 buffer); 623 624 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 625 return write_i2c_mem(serial, start_address, length, 626 serial->TI_I2C_Type, buffer); 627 return -EINVAL; 628} 629 630 631 632/* Read a descriptor header from I2C based on type */ 633static int get_descriptor_addr(struct edgeport_serial *serial, 634 int desc_type, struct ti_i2c_desc *rom_desc) 635{ 636 int start_address; 637 int status; 638 639 /* Search for requested descriptor in I2C */ 640 start_address = 2; 641 do { 642 status = read_rom(serial, 643 start_address, 644 sizeof(struct ti_i2c_desc), 645 (__u8 *)rom_desc); 646 if (status) 647 return 0; 648 649 if (rom_desc->Type == desc_type) 650 return start_address; 651 652 start_address = start_address + sizeof(struct ti_i2c_desc) 653 + rom_desc->Size; 654 655 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 656 657 return 0; 658} 659 660/* Validate descriptor checksum */ 661static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 662{ 663 __u16 i; 664 __u8 cs = 0; 665 666 for (i = 0; i < rom_desc->Size; i++) 667 cs = (__u8)(cs + buffer[i]); 668 669 if (cs != rom_desc->CheckSum) { 670 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 671 return -EINVAL; 672 } 673 return 0; 674} 675 676/* Make sure that the I2C image is good */ 677static int check_i2c_image(struct edgeport_serial *serial) 678{ 679 struct device *dev = &serial->serial->dev->dev; 680 int status = 0; 681 struct ti_i2c_desc *rom_desc; 682 int start_address = 2; 683 __u8 *buffer; 684 __u16 ttype; 685 686 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 687 if (!rom_desc) { 688 dev_err(dev, "%s - out of memory\n", __func__); 689 return -ENOMEM; 690 } 691 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 692 if (!buffer) { 693 dev_err(dev, "%s - out of memory when allocating buffer\n", 694 __func__); 695 kfree(rom_desc); 696 return -ENOMEM; 697 } 698 699 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 700 status = read_rom(serial, 0, 1, buffer); 701 if (status) 702 goto out; 703 704 if (*buffer != UMP5152 && *buffer != UMP3410) { 705 dev_err(dev, "%s - invalid buffer signature\n", __func__); 706 status = -ENODEV; 707 goto out; 708 } 709 710 do { 711 /* Validate the I2C */ 712 status = read_rom(serial, 713 start_address, 714 sizeof(struct ti_i2c_desc), 715 (__u8 *)rom_desc); 716 if (status) 717 break; 718 719 if ((start_address + sizeof(struct ti_i2c_desc) + 720 rom_desc->Size) > TI_MAX_I2C_SIZE) { 721 status = -ENODEV; 722 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 723 break; 724 } 725 726 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 727 728 /* Skip type 2 record */ 729 ttype = rom_desc->Type & 0x0f; 730 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 731 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 732 /* Read the descriptor data */ 733 status = read_rom(serial, start_address + 734 sizeof(struct ti_i2c_desc), 735 rom_desc->Size, buffer); 736 if (status) 737 break; 738 739 status = valid_csum(rom_desc, buffer); 740 if (status) 741 break; 742 } 743 start_address = start_address + sizeof(struct ti_i2c_desc) + 744 rom_desc->Size; 745 746 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 747 (start_address < TI_MAX_I2C_SIZE)); 748 749 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 750 (start_address > TI_MAX_I2C_SIZE)) 751 status = -ENODEV; 752 753out: 754 kfree(buffer); 755 kfree(rom_desc); 756 return status; 757} 758 759static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 760{ 761 int status; 762 int start_address; 763 struct ti_i2c_desc *rom_desc; 764 struct edge_ti_manuf_descriptor *desc; 765 struct device *dev = &serial->serial->dev->dev; 766 767 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 768 if (!rom_desc) { 769 dev_err(dev, "%s - out of memory\n", __func__); 770 return -ENOMEM; 771 } 772 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 773 rom_desc); 774 775 if (!start_address) { 776 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 777 status = -ENODEV; 778 goto exit; 779 } 780 781 /* Read the descriptor data */ 782 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 783 rom_desc->Size, buffer); 784 if (status) 785 goto exit; 786 787 status = valid_csum(rom_desc, buffer); 788 789 desc = (struct edge_ti_manuf_descriptor *)buffer; 790 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 791 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 792 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 793 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 794 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 795 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 796 797exit: 798 kfree(rom_desc); 799 return status; 800} 801 802/* Build firmware header used for firmware update */ 803static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 804{ 805 __u8 *buffer; 806 int buffer_size; 807 int i; 808 int err; 809 __u8 cs = 0; 810 struct ti_i2c_desc *i2c_header; 811 struct ti_i2c_image_header *img_header; 812 struct ti_i2c_firmware_rec *firmware_rec; 813 const struct firmware *fw; 814 const char *fw_name = "edgeport/down3.bin"; 815 816 /* In order to update the I2C firmware we must change the type 2 record 817 * to type 0xF2. This will force the UMP to come up in Boot Mode. 818 * Then while in boot mode, the driver will download the latest 819 * firmware (padded to 15.5k) into the UMP ram. And finally when the 820 * device comes back up in download mode the driver will cause the new 821 * firmware to be copied from the UMP Ram to I2C and the firmware will 822 * update the record type from 0xf2 to 0x02. 823 */ 824 825 /* Allocate a 15.5k buffer + 2 bytes for version number 826 * (Firmware Record) */ 827 buffer_size = (((1024 * 16) - 512 ) + 828 sizeof(struct ti_i2c_firmware_rec)); 829 830 buffer = kmalloc(buffer_size, GFP_KERNEL); 831 if (!buffer) { 832 dev_err(dev, "%s - out of memory\n", __func__); 833 return -ENOMEM; 834 } 835 836 // Set entire image of 0xffs 837 memset(buffer, 0xff, buffer_size); 838 839 err = request_firmware(&fw, fw_name, dev); 840 if (err) { 841 dev_err(dev, "Failed to load image \"%s\" err %d\n", 842 fw_name, err); 843 kfree(buffer); 844 return err; 845 } 846 847 /* Save Download Version Number */ 848 OperationalMajorVersion = fw->data[0]; 849 OperationalMinorVersion = fw->data[1]; 850 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 851 852 /* Copy version number into firmware record */ 853 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 854 855 firmware_rec->Ver_Major = OperationalMajorVersion; 856 firmware_rec->Ver_Minor = OperationalMinorVersion; 857 858 /* Pointer to fw_down memory image */ 859 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 860 861 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 862 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 863 le16_to_cpu(img_header->Length)); 864 865 release_firmware(fw); 866 867 for (i=0; i < buffer_size; i++) { 868 cs = (__u8)(cs + buffer[i]); 869 } 870 871 kfree(buffer); 872 873 /* Build new header */ 874 i2c_header = (struct ti_i2c_desc *)header; 875 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 876 877 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 878 i2c_header->Size = (__u16)buffer_size; 879 i2c_header->CheckSum = cs; 880 firmware_rec->Ver_Major = OperationalMajorVersion; 881 firmware_rec->Ver_Minor = OperationalMinorVersion; 882 883 return 0; 884} 885 886/* Try to figure out what type of I2c we have */ 887static int i2c_type_bootmode(struct edgeport_serial *serial) 888{ 889 struct device *dev = &serial->serial->dev->dev; 890 int status; 891 u8 *data; 892 893 data = kmalloc(1, GFP_KERNEL); 894 if (!data) { 895 dev_err(dev, "%s - out of memory\n", __func__); 896 return -ENOMEM; 897 } 898 899 /* Try to read type 2 */ 900 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 901 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 902 if (status) 903 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 904 else 905 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 906 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 907 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 908 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 909 goto out; 910 } 911 912 /* Try to read type 3 */ 913 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 914 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 915 if (status) 916 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 917 else 918 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 919 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 920 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 921 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 922 goto out; 923 } 924 925 dev_dbg(dev, "%s - Unknown\n", __func__); 926 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 927 status = -ENODEV; 928out: 929 kfree(data); 930 return status; 931} 932 933static int bulk_xfer(struct usb_serial *serial, void *buffer, 934 int length, int *num_sent) 935{ 936 int status; 937 938 status = usb_bulk_msg(serial->dev, 939 usb_sndbulkpipe(serial->dev, 940 serial->port[0]->bulk_out_endpointAddress), 941 buffer, length, num_sent, 1000); 942 return status; 943} 944 945/* Download given firmware image to the device (IN BOOT MODE) */ 946static int download_code(struct edgeport_serial *serial, __u8 *image, 947 int image_length) 948{ 949 int status = 0; 950 int pos; 951 int transfer; 952 int done; 953 954 /* Transfer firmware image */ 955 for (pos = 0; pos < image_length; ) { 956 /* Read the next buffer from file */ 957 transfer = image_length - pos; 958 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 959 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 960 961 /* Transfer data */ 962 status = bulk_xfer(serial->serial, &image[pos], 963 transfer, &done); 964 if (status) 965 break; 966 /* Advance buffer pointer */ 967 pos += done; 968 } 969 970 return status; 971} 972 973/* FIXME!!! */ 974static int config_boot_dev(struct usb_device *dev) 975{ 976 return 0; 977} 978 979static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 980{ 981 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 982} 983 984/** 985 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 986 * 987 * This routine downloads the main operating code into the TI5052, using the 988 * boot code already burned into E2PROM or ROM. 989 */ 990static int download_fw(struct edgeport_serial *serial) 991{ 992 struct device *dev = &serial->serial->dev->dev; 993 int status = 0; 994 int start_address; 995 struct edge_ti_manuf_descriptor *ti_manuf_desc; 996 struct usb_interface_descriptor *interface; 997 int download_cur_ver; 998 int download_new_ver; 999 1000 /* This routine is entered by both the BOOT mode and the Download mode 1001 * We can determine which code is running by the reading the config 1002 * descriptor and if we have only one bulk pipe it is in boot mode 1003 */ 1004 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 1005 1006 /* Default to type 2 i2c */ 1007 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1008 1009 status = choose_config(serial->serial->dev); 1010 if (status) 1011 return status; 1012 1013 interface = &serial->serial->interface->cur_altsetting->desc; 1014 if (!interface) { 1015 dev_err(dev, "%s - no interface set, error!\n", __func__); 1016 return -ENODEV; 1017 } 1018 1019 /* 1020 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 1021 * if we have more than one endpoint we are definitely in download 1022 * mode 1023 */ 1024 if (interface->bNumEndpoints > 1) 1025 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 1026 else 1027 /* Otherwise we will remain in configuring mode */ 1028 serial->product_info.TiMode = TI_MODE_CONFIGURING; 1029 1030 /********************************************************************/ 1031 /* Download Mode */ 1032 /********************************************************************/ 1033 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 1034 struct ti_i2c_desc *rom_desc; 1035 1036 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 1037 1038 status = check_i2c_image(serial); 1039 if (status) { 1040 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 1041 return status; 1042 } 1043 1044 /* Validate Hardware version number 1045 * Read Manufacturing Descriptor from TI Based Edgeport 1046 */ 1047 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1048 if (!ti_manuf_desc) { 1049 dev_err(dev, "%s - out of memory.\n", __func__); 1050 return -ENOMEM; 1051 } 1052 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1053 if (status) { 1054 kfree(ti_manuf_desc); 1055 return status; 1056 } 1057 1058 /* Check version number of ION descriptor */ 1059 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1060 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1061 __func__, ti_cpu_rev(ti_manuf_desc)); 1062 kfree(ti_manuf_desc); 1063 return -EINVAL; 1064 } 1065 1066 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1067 if (!rom_desc) { 1068 dev_err(dev, "%s - out of memory.\n", __func__); 1069 kfree(ti_manuf_desc); 1070 return -ENOMEM; 1071 } 1072 1073 /* Search for type 2 record (firmware record) */ 1074 start_address = get_descriptor_addr(serial, 1075 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1076 if (start_address != 0) { 1077 struct ti_i2c_firmware_rec *firmware_version; 1078 u8 *record; 1079 1080 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1081 1082 firmware_version = kmalloc(sizeof(*firmware_version), 1083 GFP_KERNEL); 1084 if (!firmware_version) { 1085 dev_err(dev, "%s - out of memory.\n", __func__); 1086 kfree(rom_desc); 1087 kfree(ti_manuf_desc); 1088 return -ENOMEM; 1089 } 1090 1091 /* Validate version number 1092 * Read the descriptor data 1093 */ 1094 status = read_rom(serial, start_address + 1095 sizeof(struct ti_i2c_desc), 1096 sizeof(struct ti_i2c_firmware_rec), 1097 (__u8 *)firmware_version); 1098 if (status) { 1099 kfree(firmware_version); 1100 kfree(rom_desc); 1101 kfree(ti_manuf_desc); 1102 return status; 1103 } 1104 1105 /* Check version number of download with current 1106 version in I2c */ 1107 download_cur_ver = (firmware_version->Ver_Major << 8) + 1108 (firmware_version->Ver_Minor); 1109 download_new_ver = (OperationalMajorVersion << 8) + 1110 (OperationalMinorVersion); 1111 1112 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1113 __func__, firmware_version->Ver_Major, 1114 firmware_version->Ver_Minor, 1115 OperationalMajorVersion, 1116 OperationalMinorVersion); 1117 1118 /* Check if we have an old version in the I2C and 1119 update if necessary */ 1120 if (download_cur_ver < download_new_ver) { 1121 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1122 __func__, 1123 firmware_version->Ver_Major, 1124 firmware_version->Ver_Minor, 1125 OperationalMajorVersion, 1126 OperationalMinorVersion); 1127 1128 record = kmalloc(1, GFP_KERNEL); 1129 if (!record) { 1130 dev_err(dev, "%s - out of memory.\n", 1131 __func__); 1132 kfree(firmware_version); 1133 kfree(rom_desc); 1134 kfree(ti_manuf_desc); 1135 return -ENOMEM; 1136 } 1137 /* In order to update the I2C firmware we must 1138 * change the type 2 record to type 0xF2. This 1139 * will force the UMP to come up in Boot Mode. 1140 * Then while in boot mode, the driver will 1141 * download the latest firmware (padded to 1142 * 15.5k) into the UMP ram. Finally when the 1143 * device comes back up in download mode the 1144 * driver will cause the new firmware to be 1145 * copied from the UMP Ram to I2C and the 1146 * firmware will update the record type from 1147 * 0xf2 to 0x02. 1148 */ 1149 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1150 1151 /* Change the I2C Firmware record type to 1152 0xf2 to trigger an update */ 1153 status = write_rom(serial, start_address, 1154 sizeof(*record), record); 1155 if (status) { 1156 kfree(record); 1157 kfree(firmware_version); 1158 kfree(rom_desc); 1159 kfree(ti_manuf_desc); 1160 return status; 1161 } 1162 1163 /* verify the write -- must do this in order 1164 * for write to complete before we do the 1165 * hardware reset 1166 */ 1167 status = read_rom(serial, 1168 start_address, 1169 sizeof(*record), 1170 record); 1171 if (status) { 1172 kfree(record); 1173 kfree(firmware_version); 1174 kfree(rom_desc); 1175 kfree(ti_manuf_desc); 1176 return status; 1177 } 1178 1179 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1180 dev_err(dev, "%s - error resetting device\n", __func__); 1181 kfree(record); 1182 kfree(firmware_version); 1183 kfree(rom_desc); 1184 kfree(ti_manuf_desc); 1185 return -ENODEV; 1186 } 1187 1188 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1189 1190 /* Reset UMP -- Back to BOOT MODE */ 1191 status = ti_vsend_sync(serial->serial->dev, 1192 UMPC_HARDWARE_RESET, 1193 0, 0, NULL, 0); 1194 1195 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1196 1197 /* return an error on purpose. */ 1198 kfree(record); 1199 kfree(firmware_version); 1200 kfree(rom_desc); 1201 kfree(ti_manuf_desc); 1202 return -ENODEV; 1203 } 1204 kfree(firmware_version); 1205 } 1206 /* Search for type 0xF2 record (firmware blank record) */ 1207 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1208#define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1209 sizeof(struct ti_i2c_firmware_rec)) 1210 __u8 *header; 1211 __u8 *vheader; 1212 1213 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1214 if (!header) { 1215 dev_err(dev, "%s - out of memory.\n", __func__); 1216 kfree(rom_desc); 1217 kfree(ti_manuf_desc); 1218 return -ENOMEM; 1219 } 1220 1221 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1222 if (!vheader) { 1223 dev_err(dev, "%s - out of memory.\n", __func__); 1224 kfree(header); 1225 kfree(rom_desc); 1226 kfree(ti_manuf_desc); 1227 return -ENOMEM; 1228 } 1229 1230 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1231 1232 /* 1233 * In order to update the I2C firmware we must change 1234 * the type 2 record to type 0xF2. This will force the 1235 * UMP to come up in Boot Mode. Then while in boot 1236 * mode, the driver will download the latest firmware 1237 * (padded to 15.5k) into the UMP ram. Finally when the 1238 * device comes back up in download mode the driver 1239 * will cause the new firmware to be copied from the 1240 * UMP Ram to I2C and the firmware will update the 1241 * record type from 0xf2 to 0x02. 1242 */ 1243 status = build_i2c_fw_hdr(header, dev); 1244 if (status) { 1245 kfree(vheader); 1246 kfree(header); 1247 kfree(rom_desc); 1248 kfree(ti_manuf_desc); 1249 return -EINVAL; 1250 } 1251 1252 /* Update I2C with type 0xf2 record with correct 1253 size and checksum */ 1254 status = write_rom(serial, 1255 start_address, 1256 HEADER_SIZE, 1257 header); 1258 if (status) { 1259 kfree(vheader); 1260 kfree(header); 1261 kfree(rom_desc); 1262 kfree(ti_manuf_desc); 1263 return -EINVAL; 1264 } 1265 1266 /* verify the write -- must do this in order for 1267 write to complete before we do the hardware reset */ 1268 status = read_rom(serial, start_address, 1269 HEADER_SIZE, vheader); 1270 1271 if (status) { 1272 dev_dbg(dev, "%s - can't read header back\n", __func__); 1273 kfree(vheader); 1274 kfree(header); 1275 kfree(rom_desc); 1276 kfree(ti_manuf_desc); 1277 return status; 1278 } 1279 if (memcmp(vheader, header, HEADER_SIZE)) { 1280 dev_dbg(dev, "%s - write download record failed\n", __func__); 1281 kfree(vheader); 1282 kfree(header); 1283 kfree(rom_desc); 1284 kfree(ti_manuf_desc); 1285 return -EINVAL; 1286 } 1287 1288 kfree(vheader); 1289 kfree(header); 1290 1291 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1292 1293 /* Tell firmware to copy download image into I2C */ 1294 status = ti_vsend_sync(serial->serial->dev, 1295 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1296 1297 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1298 if (status) { 1299 dev_err(dev, 1300 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1301 __func__); 1302 kfree(rom_desc); 1303 kfree(ti_manuf_desc); 1304 return status; 1305 } 1306 } 1307 1308 // The device is running the download code 1309 kfree(rom_desc); 1310 kfree(ti_manuf_desc); 1311 return 0; 1312 } 1313 1314 /********************************************************************/ 1315 /* Boot Mode */ 1316 /********************************************************************/ 1317 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1318 1319 /* Configure the TI device so we can use the BULK pipes for download */ 1320 status = config_boot_dev(serial->serial->dev); 1321 if (status) 1322 return status; 1323 1324 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1325 != USB_VENDOR_ID_ION) { 1326 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1327 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1328 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1329 goto stayinbootmode; 1330 } 1331 1332 /* We have an ION device (I2c Must be programmed) 1333 Determine I2C image type */ 1334 if (i2c_type_bootmode(serial)) 1335 goto stayinbootmode; 1336 1337 /* Check for ION Vendor ID and that the I2C is valid */ 1338 if (!check_i2c_image(serial)) { 1339 struct ti_i2c_image_header *header; 1340 int i; 1341 __u8 cs = 0; 1342 __u8 *buffer; 1343 int buffer_size; 1344 int err; 1345 const struct firmware *fw; 1346 const char *fw_name = "edgeport/down3.bin"; 1347 1348 /* Validate Hardware version number 1349 * Read Manufacturing Descriptor from TI Based Edgeport 1350 */ 1351 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1352 if (!ti_manuf_desc) { 1353 dev_err(dev, "%s - out of memory.\n", __func__); 1354 return -ENOMEM; 1355 } 1356 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1357 if (status) { 1358 kfree(ti_manuf_desc); 1359 goto stayinbootmode; 1360 } 1361 1362 /* Check for version 2 */ 1363 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1364 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1365 __func__, ti_cpu_rev(ti_manuf_desc)); 1366 kfree(ti_manuf_desc); 1367 goto stayinbootmode; 1368 } 1369 1370 kfree(ti_manuf_desc); 1371 1372 /* 1373 * In order to update the I2C firmware we must change the type 1374 * 2 record to type 0xF2. This will force the UMP to come up 1375 * in Boot Mode. Then while in boot mode, the driver will 1376 * download the latest firmware (padded to 15.5k) into the 1377 * UMP ram. Finally when the device comes back up in download 1378 * mode the driver will cause the new firmware to be copied 1379 * from the UMP Ram to I2C and the firmware will update the 1380 * record type from 0xf2 to 0x02. 1381 * 1382 * Do we really have to copy the whole firmware image, 1383 * or could we do this in place! 1384 */ 1385 1386 /* Allocate a 15.5k buffer + 3 byte header */ 1387 buffer_size = (((1024 * 16) - 512) + 1388 sizeof(struct ti_i2c_image_header)); 1389 buffer = kmalloc(buffer_size, GFP_KERNEL); 1390 if (!buffer) { 1391 dev_err(dev, "%s - out of memory\n", __func__); 1392 return -ENOMEM; 1393 } 1394 1395 /* Initialize the buffer to 0xff (pad the buffer) */ 1396 memset(buffer, 0xff, buffer_size); 1397 1398 err = request_firmware(&fw, fw_name, dev); 1399 if (err) { 1400 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1401 fw_name, err); 1402 kfree(buffer); 1403 return err; 1404 } 1405 memcpy(buffer, &fw->data[4], fw->size - 4); 1406 release_firmware(fw); 1407 1408 for (i = sizeof(struct ti_i2c_image_header); 1409 i < buffer_size; i++) { 1410 cs = (__u8)(cs + buffer[i]); 1411 } 1412 1413 header = (struct ti_i2c_image_header *)buffer; 1414 1415 /* update length and checksum after padding */ 1416 header->Length = cpu_to_le16((__u16)(buffer_size - 1417 sizeof(struct ti_i2c_image_header))); 1418 header->CheckSum = cs; 1419 1420 /* Download the operational code */ 1421 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1422 status = download_code(serial, buffer, buffer_size); 1423 1424 kfree(buffer); 1425 1426 if (status) { 1427 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1428 return status; 1429 } 1430 1431 /* Device will reboot */ 1432 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1433 1434 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1435 1436 /* return an error on purpose */ 1437 return -ENODEV; 1438 } 1439 1440stayinbootmode: 1441 /* Eprom is invalid or blank stay in boot mode */ 1442 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1443 serial->product_info.TiMode = TI_MODE_BOOT; 1444 1445 return 0; 1446} 1447 1448 1449static int ti_do_config(struct edgeport_port *port, int feature, int on) 1450{ 1451 int port_number = port->port->number - port->port->serial->minor; 1452 on = !!on; /* 1 or 0 not bitmask */ 1453 return send_cmd(port->port->serial->dev, 1454 feature, (__u8)(UMPM_UART1_PORT + port_number), 1455 on, NULL, 0); 1456} 1457 1458 1459static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1460{ 1461 int status = 0; 1462 1463 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1464 1465 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1466 if (status) 1467 return status; 1468 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1469 if (status) 1470 return status; 1471 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1472} 1473 1474/* Convert TI LSR to standard UART flags */ 1475static __u8 map_line_status(__u8 ti_lsr) 1476{ 1477 __u8 lsr = 0; 1478 1479#define MAP_FLAG(flagUmp, flagUart) \ 1480 if (ti_lsr & flagUmp) \ 1481 lsr |= flagUart; 1482 1483 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1484 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1485 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1486 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1487 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1488 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1489 1490#undef MAP_FLAG 1491 1492 return lsr; 1493} 1494 1495static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1496{ 1497 struct async_icount *icount; 1498 struct tty_struct *tty; 1499 1500 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1501 1502 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1503 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1504 icount = &edge_port->icount; 1505 1506 /* update input line counters */ 1507 if (msr & EDGEPORT_MSR_DELTA_CTS) 1508 icount->cts++; 1509 if (msr & EDGEPORT_MSR_DELTA_DSR) 1510 icount->dsr++; 1511 if (msr & EDGEPORT_MSR_DELTA_CD) 1512 icount->dcd++; 1513 if (msr & EDGEPORT_MSR_DELTA_RI) 1514 icount->rng++; 1515 wake_up_interruptible(&edge_port->delta_msr_wait); 1516 } 1517 1518 /* Save the new modem status */ 1519 edge_port->shadow_msr = msr & 0xf0; 1520 1521 tty = tty_port_tty_get(&edge_port->port->port); 1522 /* handle CTS flow control */ 1523 if (tty && C_CRTSCTS(tty)) { 1524 if (msr & EDGEPORT_MSR_CTS) { 1525 tty->hw_stopped = 0; 1526 tty_wakeup(tty); 1527 } else { 1528 tty->hw_stopped = 1; 1529 } 1530 } 1531 tty_kref_put(tty); 1532} 1533 1534static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1535 __u8 lsr, __u8 data) 1536{ 1537 struct async_icount *icount; 1538 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1539 LSR_FRM_ERR | LSR_BREAK)); 1540 struct tty_struct *tty; 1541 1542 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1543 1544 edge_port->shadow_lsr = lsr; 1545 1546 if (new_lsr & LSR_BREAK) 1547 /* 1548 * Parity and Framing errors only count if they 1549 * occur exclusive of a break being received. 1550 */ 1551 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1552 1553 /* Place LSR data byte into Rx buffer */ 1554 if (lsr_data) { 1555 tty = tty_port_tty_get(&edge_port->port->port); 1556 if (tty) { 1557 edge_tty_recv(&edge_port->port->dev, tty, &data, 1); 1558 tty_kref_put(tty); 1559 } 1560 } 1561 1562 /* update input line counters */ 1563 icount = &edge_port->icount; 1564 if (new_lsr & LSR_BREAK) 1565 icount->brk++; 1566 if (new_lsr & LSR_OVER_ERR) 1567 icount->overrun++; 1568 if (new_lsr & LSR_PAR_ERR) 1569 icount->parity++; 1570 if (new_lsr & LSR_FRM_ERR) 1571 icount->frame++; 1572} 1573 1574 1575static void edge_interrupt_callback(struct urb *urb) 1576{ 1577 struct edgeport_serial *edge_serial = urb->context; 1578 struct usb_serial_port *port; 1579 struct edgeport_port *edge_port; 1580 struct device *dev; 1581 unsigned char *data = urb->transfer_buffer; 1582 int length = urb->actual_length; 1583 int port_number; 1584 int function; 1585 int retval; 1586 __u8 lsr; 1587 __u8 msr; 1588 int status = urb->status; 1589 1590 switch (status) { 1591 case 0: 1592 /* success */ 1593 break; 1594 case -ECONNRESET: 1595 case -ENOENT: 1596 case -ESHUTDOWN: 1597 /* this urb is terminated, clean up */ 1598 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1599 __func__, status); 1600 return; 1601 default: 1602 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1603 "%d\n", __func__, status); 1604 goto exit; 1605 } 1606 1607 if (!length) { 1608 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1609 goto exit; 1610 } 1611 1612 dev = &edge_serial->serial->dev->dev; 1613 usb_serial_debug_data(dev, __func__, length, data); 1614 1615 if (length != 2) { 1616 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1617 goto exit; 1618 } 1619 1620 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1621 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1622 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1623 port_number, function, data[1]); 1624 port = edge_serial->serial->port[port_number]; 1625 edge_port = usb_get_serial_port_data(port); 1626 if (!edge_port) { 1627 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1628 return; 1629 } 1630 switch (function) { 1631 case TIUMP_INTERRUPT_CODE_LSR: 1632 lsr = map_line_status(data[1]); 1633 if (lsr & UMP_UART_LSR_DATA_MASK) { 1634 /* Save the LSR event for bulk read 1635 completion routine */ 1636 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1637 __func__, port_number, lsr); 1638 edge_port->lsr_event = 1; 1639 edge_port->lsr_mask = lsr; 1640 } else { 1641 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1642 __func__, port_number, lsr); 1643 handle_new_lsr(edge_port, 0, lsr, 0); 1644 } 1645 break; 1646 1647 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1648 /* Copy MSR from UMP */ 1649 msr = data[1]; 1650 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1651 __func__, port_number, msr); 1652 handle_new_msr(edge_port, msr); 1653 break; 1654 1655 default: 1656 dev_err(&urb->dev->dev, 1657 "%s - Unknown Interrupt code from UMP %x\n", 1658 __func__, data[1]); 1659 break; 1660 1661 } 1662 1663exit: 1664 retval = usb_submit_urb(urb, GFP_ATOMIC); 1665 if (retval) 1666 dev_err(&urb->dev->dev, 1667 "%s - usb_submit_urb failed with result %d\n", 1668 __func__, retval); 1669} 1670 1671static void edge_bulk_in_callback(struct urb *urb) 1672{ 1673 struct edgeport_port *edge_port = urb->context; 1674 struct device *dev = &edge_port->port->dev; 1675 unsigned char *data = urb->transfer_buffer; 1676 struct tty_struct *tty; 1677 int retval = 0; 1678 int port_number; 1679 int status = urb->status; 1680 1681 switch (status) { 1682 case 0: 1683 /* success */ 1684 break; 1685 case -ECONNRESET: 1686 case -ENOENT: 1687 case -ESHUTDOWN: 1688 /* this urb is terminated, clean up */ 1689 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1690 return; 1691 default: 1692 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1693 } 1694 1695 if (status == -EPIPE) 1696 goto exit; 1697 1698 if (status) { 1699 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1700 return; 1701 } 1702 1703 port_number = edge_port->port->number - edge_port->port->serial->minor; 1704 1705 if (edge_port->lsr_event) { 1706 edge_port->lsr_event = 0; 1707 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1708 __func__, port_number, edge_port->lsr_mask, *data); 1709 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1710 /* Adjust buffer length/pointer */ 1711 --urb->actual_length; 1712 ++data; 1713 } 1714 1715 tty = tty_port_tty_get(&edge_port->port->port); 1716 if (tty && urb->actual_length) { 1717 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1718 if (edge_port->close_pending) 1719 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1720 __func__); 1721 else 1722 edge_tty_recv(dev, tty, data, urb->actual_length); 1723 edge_port->icount.rx += urb->actual_length; 1724 } 1725 tty_kref_put(tty); 1726 1727exit: 1728 /* continue read unless stopped */ 1729 spin_lock(&edge_port->ep_lock); 1730 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1731 retval = usb_submit_urb(urb, GFP_ATOMIC); 1732 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1733 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1734 1735 spin_unlock(&edge_port->ep_lock); 1736 if (retval) 1737 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1738} 1739 1740static void edge_tty_recv(struct device *dev, struct tty_struct *tty, 1741 unsigned char *data, int length) 1742{ 1743 int queued; 1744 1745 queued = tty_insert_flip_string(tty, data, length); 1746 if (queued < length) 1747 dev_err(dev, "%s - dropping data, %d bytes lost\n", 1748 __func__, length - queued); 1749 tty_flip_buffer_push(tty); 1750} 1751 1752static void edge_bulk_out_callback(struct urb *urb) 1753{ 1754 struct usb_serial_port *port = urb->context; 1755 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1756 int status = urb->status; 1757 struct tty_struct *tty; 1758 1759 edge_port->ep_write_urb_in_use = 0; 1760 1761 switch (status) { 1762 case 0: 1763 /* success */ 1764 break; 1765 case -ECONNRESET: 1766 case -ENOENT: 1767 case -ESHUTDOWN: 1768 /* this urb is terminated, clean up */ 1769 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1770 __func__, status); 1771 return; 1772 default: 1773 dev_err_console(port, "%s - nonzero write bulk status " 1774 "received: %d\n", __func__, status); 1775 } 1776 1777 /* send any buffered data */ 1778 tty = tty_port_tty_get(&port->port); 1779 edge_send(tty); 1780 tty_kref_put(tty); 1781} 1782 1783static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1784{ 1785 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1786 struct edgeport_serial *edge_serial; 1787 struct usb_device *dev; 1788 struct urb *urb; 1789 int port_number; 1790 int status; 1791 u16 open_settings; 1792 u8 transaction_timeout; 1793 1794 if (edge_port == NULL) 1795 return -ENODEV; 1796 1797 port_number = port->number - port->serial->minor; 1798 switch (port_number) { 1799 case 0: 1800 edge_port->uart_base = UMPMEM_BASE_UART1; 1801 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 1802 break; 1803 case 1: 1804 edge_port->uart_base = UMPMEM_BASE_UART2; 1805 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 1806 break; 1807 default: 1808 dev_err(&port->dev, "Unknown port number!!!\n"); 1809 return -ENODEV; 1810 } 1811 1812 dev_dbg(&port->dev, "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 1813 __func__, port_number, edge_port->uart_base, edge_port->dma_address); 1814 1815 dev = port->serial->dev; 1816 1817 memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); 1818 init_waitqueue_head(&edge_port->delta_msr_wait); 1819 1820 /* turn off loopback */ 1821 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1822 if (status) { 1823 dev_err(&port->dev, 1824 "%s - cannot send clear loopback command, %d\n", 1825 __func__, status); 1826 return status; 1827 } 1828 1829 /* set up the port settings */ 1830 if (tty) 1831 edge_set_termios(tty, port, &tty->termios); 1832 1833 /* open up the port */ 1834 1835 /* milliseconds to timeout for DMA transfer */ 1836 transaction_timeout = 2; 1837 1838 edge_port->ump_read_timeout = 1839 max(20, ((transaction_timeout * 3) / 2)); 1840 1841 /* milliseconds to timeout for DMA transfer */ 1842 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1843 UMP_PIPE_TRANS_TIMEOUT_ENA | 1844 (transaction_timeout << 2)); 1845 1846 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1847 1848 /* Tell TI to open and start the port */ 1849 status = send_cmd(dev, UMPC_OPEN_PORT, 1850 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1851 if (status) { 1852 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1853 __func__, status); 1854 return status; 1855 } 1856 1857 /* Start the DMA? */ 1858 status = send_cmd(dev, UMPC_START_PORT, 1859 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1860 if (status) { 1861 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1862 __func__, status); 1863 return status; 1864 } 1865 1866 /* Clear TX and RX buffers in UMP */ 1867 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1868 if (status) { 1869 dev_err(&port->dev, 1870 "%s - cannot send clear buffers command, %d\n", 1871 __func__, status); 1872 return status; 1873 } 1874 1875 /* Read Initial MSR */ 1876 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1877 (__u16)(UMPM_UART1_PORT + port_number), 1878 &edge_port->shadow_msr, 1); 1879 if (status) { 1880 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1881 __func__, status); 1882 return status; 1883 } 1884 1885 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1886 1887 /* Set Initial MCR */ 1888 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1889 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1890 1891 edge_serial = edge_port->edge_serial; 1892 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1893 return -ERESTARTSYS; 1894 if (edge_serial->num_ports_open == 0) { 1895 /* we are the first port to open, post the interrupt urb */ 1896 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1897 if (!urb) { 1898 dev_err(&port->dev, 1899 "%s - no interrupt urb present, exiting\n", 1900 __func__); 1901 status = -EINVAL; 1902 goto release_es_lock; 1903 } 1904 urb->context = edge_serial; 1905 status = usb_submit_urb(urb, GFP_KERNEL); 1906 if (status) { 1907 dev_err(&port->dev, 1908 "%s - usb_submit_urb failed with value %d\n", 1909 __func__, status); 1910 goto release_es_lock; 1911 } 1912 } 1913 1914 /* 1915 * reset the data toggle on the bulk endpoints to work around bug in 1916 * host controllers where things get out of sync some times 1917 */ 1918 usb_clear_halt(dev, port->write_urb->pipe); 1919 usb_clear_halt(dev, port->read_urb->pipe); 1920 1921 /* start up our bulk read urb */ 1922 urb = port->read_urb; 1923 if (!urb) { 1924 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1925 __func__); 1926 status = -EINVAL; 1927 goto unlink_int_urb; 1928 } 1929 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1930 urb->context = edge_port; 1931 status = usb_submit_urb(urb, GFP_KERNEL); 1932 if (status) { 1933 dev_err(&port->dev, 1934 "%s - read bulk usb_submit_urb failed with value %d\n", 1935 __func__, status); 1936 goto unlink_int_urb; 1937 } 1938 1939 ++edge_serial->num_ports_open; 1940 1941 goto release_es_lock; 1942 1943unlink_int_urb: 1944 if (edge_port->edge_serial->num_ports_open == 0) 1945 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1946release_es_lock: 1947 mutex_unlock(&edge_serial->es_lock); 1948 return status; 1949} 1950 1951static void edge_close(struct usb_serial_port *port) 1952{ 1953 struct edgeport_serial *edge_serial; 1954 struct edgeport_port *edge_port; 1955 struct usb_serial *serial = port->serial; 1956 unsigned long flags; 1957 int port_number; 1958 1959 edge_serial = usb_get_serial_data(port->serial); 1960 edge_port = usb_get_serial_port_data(port); 1961 if (edge_serial == NULL || edge_port == NULL) 1962 return; 1963 1964 /* The bulkreadcompletion routine will check 1965 * this flag and dump add read data */ 1966 edge_port->close_pending = 1; 1967 1968 chase_port(edge_port, (HZ * closing_wait) / 100); 1969 1970 usb_kill_urb(port->read_urb); 1971 usb_kill_urb(port->write_urb); 1972 edge_port->ep_write_urb_in_use = 0; 1973 spin_lock_irqsave(&edge_port->ep_lock, flags); 1974 kfifo_reset_out(&edge_port->write_fifo); 1975 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1976 1977 /* assuming we can still talk to the device, 1978 * send a close port command to it */ 1979 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1980 port_number = port->number - port->serial->minor; 1981 1982 mutex_lock(&serial->disc_mutex); 1983 if (!serial->disconnected) { 1984 send_cmd(serial->dev, 1985 UMPC_CLOSE_PORT, 1986 (__u8)(UMPM_UART1_PORT + port_number), 1987 0, 1988 NULL, 1989 0); 1990 } 1991 mutex_unlock(&serial->disc_mutex); 1992 1993 mutex_lock(&edge_serial->es_lock); 1994 --edge_port->edge_serial->num_ports_open; 1995 if (edge_port->edge_serial->num_ports_open <= 0) { 1996 /* last port is now closed, let's shut down our interrupt urb */ 1997 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1998 edge_port->edge_serial->num_ports_open = 0; 1999 } 2000 mutex_unlock(&edge_serial->es_lock); 2001 edge_port->close_pending = 0; 2002} 2003 2004static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 2005 const unsigned char *data, int count) 2006{ 2007 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2008 2009 if (count == 0) { 2010 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 2011 return 0; 2012 } 2013 2014 if (edge_port == NULL) 2015 return -ENODEV; 2016 if (edge_port->close_pending == 1) 2017 return -ENODEV; 2018 2019 count = kfifo_in_locked(&edge_port->write_fifo, data, count, 2020 &edge_port->ep_lock); 2021 edge_send(tty); 2022 2023 return count; 2024} 2025 2026static void edge_send(struct tty_struct *tty) 2027{ 2028 struct usb_serial_port *port = tty->driver_data; 2029 int count, result; 2030 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2031 unsigned long flags; 2032 2033 spin_lock_irqsave(&edge_port->ep_lock, flags); 2034 2035 if (edge_port->ep_write_urb_in_use) { 2036 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2037 return; 2038 } 2039 2040 count = kfifo_out(&edge_port->write_fifo, 2041 port->write_urb->transfer_buffer, 2042 port->bulk_out_size); 2043 2044 if (count == 0) { 2045 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2046 return; 2047 } 2048 2049 edge_port->ep_write_urb_in_use = 1; 2050 2051 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2052 2053 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 2054 2055 /* set up our urb */ 2056 port->write_urb->transfer_buffer_length = count; 2057 2058 /* send the data out the bulk port */ 2059 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2060 if (result) { 2061 dev_err_console(port, 2062 "%s - failed submitting write urb, error %d\n", 2063 __func__, result); 2064 edge_port->ep_write_urb_in_use = 0; 2065 /* TODO: reschedule edge_send */ 2066 } else 2067 edge_port->icount.tx += count; 2068 2069 /* wakeup any process waiting for writes to complete */ 2070 /* there is now more room in the buffer for new writes */ 2071 if (tty) 2072 tty_wakeup(tty); 2073} 2074 2075static int edge_write_room(struct tty_struct *tty) 2076{ 2077 struct usb_serial_port *port = tty->driver_data; 2078 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2079 int room = 0; 2080 unsigned long flags; 2081 2082 if (edge_port == NULL) 2083 return 0; 2084 if (edge_port->close_pending == 1) 2085 return 0; 2086 2087 spin_lock_irqsave(&edge_port->ep_lock, flags); 2088 room = kfifo_avail(&edge_port->write_fifo); 2089 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2090 2091 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 2092 return room; 2093} 2094 2095static int edge_chars_in_buffer(struct tty_struct *tty) 2096{ 2097 struct usb_serial_port *port = tty->driver_data; 2098 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2099 int chars = 0; 2100 unsigned long flags; 2101 2102 if (edge_port == NULL) 2103 return 0; 2104 if (edge_port->close_pending == 1) 2105 return 0; 2106 2107 spin_lock_irqsave(&edge_port->ep_lock, flags); 2108 chars = kfifo_len(&edge_port->write_fifo); 2109 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2110 2111 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2112 return chars; 2113} 2114 2115static void edge_throttle(struct tty_struct *tty) 2116{ 2117 struct usb_serial_port *port = tty->driver_data; 2118 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2119 int status; 2120 2121 if (edge_port == NULL) 2122 return; 2123 2124 /* if we are implementing XON/XOFF, send the stop character */ 2125 if (I_IXOFF(tty)) { 2126 unsigned char stop_char = STOP_CHAR(tty); 2127 status = edge_write(tty, port, &stop_char, 1); 2128 if (status <= 0) { 2129 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2130 } 2131 } 2132 2133 /* if we are implementing RTS/CTS, stop reads */ 2134 /* and the Edgeport will clear the RTS line */ 2135 if (C_CRTSCTS(tty)) 2136 stop_read(edge_port); 2137 2138} 2139 2140static void edge_unthrottle(struct tty_struct *tty) 2141{ 2142 struct usb_serial_port *port = tty->driver_data; 2143 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2144 int status; 2145 2146 if (edge_port == NULL) 2147 return; 2148 2149 /* if we are implementing XON/XOFF, send the start character */ 2150 if (I_IXOFF(tty)) { 2151 unsigned char start_char = START_CHAR(tty); 2152 status = edge_write(tty, port, &start_char, 1); 2153 if (status <= 0) { 2154 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2155 } 2156 } 2157 /* if we are implementing RTS/CTS, restart reads */ 2158 /* are the Edgeport will assert the RTS line */ 2159 if (C_CRTSCTS(tty)) { 2160 status = restart_read(edge_port); 2161 if (status) 2162 dev_err(&port->dev, 2163 "%s - read bulk usb_submit_urb failed: %d\n", 2164 __func__, status); 2165 } 2166 2167} 2168 2169static void stop_read(struct edgeport_port *edge_port) 2170{ 2171 unsigned long flags; 2172 2173 spin_lock_irqsave(&edge_port->ep_lock, flags); 2174 2175 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 2176 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2177 edge_port->shadow_mcr &= ~MCR_RTS; 2178 2179 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2180} 2181 2182static int restart_read(struct edgeport_port *edge_port) 2183{ 2184 struct urb *urb; 2185 int status = 0; 2186 unsigned long flags; 2187 2188 spin_lock_irqsave(&edge_port->ep_lock, flags); 2189 2190 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2191 urb = edge_port->port->read_urb; 2192 status = usb_submit_urb(urb, GFP_ATOMIC); 2193 } 2194 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2195 edge_port->shadow_mcr |= MCR_RTS; 2196 2197 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2198 2199 return status; 2200} 2201 2202static void change_port_settings(struct tty_struct *tty, 2203 struct edgeport_port *edge_port, struct ktermios *old_termios) 2204{ 2205 struct device *dev = &edge_port->port->dev; 2206 struct ump_uart_config *config; 2207 int baud; 2208 unsigned cflag; 2209 int status; 2210 int port_number = edge_port->port->number - 2211 edge_port->port->serial->minor; 2212 2213 dev_dbg(dev, "%s - port %d\n", __func__, edge_port->port->number); 2214 2215 config = kmalloc (sizeof (*config), GFP_KERNEL); 2216 if (!config) { 2217 tty->termios = *old_termios; 2218 dev_err(dev, "%s - out of memory\n", __func__); 2219 return; 2220 } 2221 2222 cflag = tty->termios.c_cflag; 2223 2224 config->wFlags = 0; 2225 2226 /* These flags must be set */ 2227 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2228 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2229 config->bUartMode = (__u8)(edge_port->bUartMode); 2230 2231 switch (cflag & CSIZE) { 2232 case CS5: 2233 config->bDataBits = UMP_UART_CHAR5BITS; 2234 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2235 break; 2236 case CS6: 2237 config->bDataBits = UMP_UART_CHAR6BITS; 2238 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2239 break; 2240 case CS7: 2241 config->bDataBits = UMP_UART_CHAR7BITS; 2242 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2243 break; 2244 default: 2245 case CS8: 2246 config->bDataBits = UMP_UART_CHAR8BITS; 2247 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2248 break; 2249 } 2250 2251 if (cflag & PARENB) { 2252 if (cflag & PARODD) { 2253 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2254 config->bParity = UMP_UART_ODDPARITY; 2255 dev_dbg(dev, "%s - parity = odd\n", __func__); 2256 } else { 2257 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2258 config->bParity = UMP_UART_EVENPARITY; 2259 dev_dbg(dev, "%s - parity = even\n", __func__); 2260 } 2261 } else { 2262 config->bParity = UMP_UART_NOPARITY; 2263 dev_dbg(dev, "%s - parity = none\n", __func__); 2264 } 2265 2266 if (cflag & CSTOPB) { 2267 config->bStopBits = UMP_UART_STOPBIT2; 2268 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2269 } else { 2270 config->bStopBits = UMP_UART_STOPBIT1; 2271 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2272 } 2273 2274 /* figure out the flow control settings */ 2275 if (cflag & CRTSCTS) { 2276 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2277 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2278 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2279 } else { 2280 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2281 tty->hw_stopped = 0; 2282 restart_read(edge_port); 2283 } 2284 2285 /* if we are implementing XON/XOFF, set the start and stop 2286 character in the device */ 2287 config->cXon = START_CHAR(tty); 2288 config->cXoff = STOP_CHAR(tty); 2289 2290 /* if we are implementing INBOUND XON/XOFF */ 2291 if (I_IXOFF(tty)) { 2292 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2293 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2294 __func__, config->cXon, config->cXoff); 2295 } else 2296 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2297 2298 /* if we are implementing OUTBOUND XON/XOFF */ 2299 if (I_IXON(tty)) { 2300 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2301 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2302 __func__, config->cXon, config->cXoff); 2303 } else 2304 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2305 2306 tty->termios.c_cflag &= ~CMSPAR; 2307 2308 /* Round the baud rate */ 2309 baud = tty_get_baud_rate(tty); 2310 if (!baud) { 2311 /* pick a default, any default... */ 2312 baud = 9600; 2313 } else 2314 tty_encode_baud_rate(tty, baud, baud); 2315 2316 edge_port->baud_rate = baud; 2317 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2318 2319 /* FIXME: Recompute actual baud from divisor here */ 2320 2321 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2322 2323 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2324 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2325 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2326 dev_dbg(dev, "bParity: %d\n", config->bParity); 2327 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2328 dev_dbg(dev, "cXon: %d\n", config->cXon); 2329 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2330 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2331 2332 /* move the word values into big endian mode */ 2333 cpu_to_be16s(&config->wFlags); 2334 cpu_to_be16s(&config->wBaudRate); 2335 2336 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2337 (__u8)(UMPM_UART1_PORT + port_number), 2338 0, (__u8 *)config, sizeof(*config)); 2339 if (status) 2340 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2341 __func__, status); 2342 kfree(config); 2343} 2344 2345static void edge_set_termios(struct tty_struct *tty, 2346 struct usb_serial_port *port, struct ktermios *old_termios) 2347{ 2348 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2349 unsigned int cflag; 2350 2351 cflag = tty->termios.c_cflag; 2352 2353 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2354 tty->termios.c_cflag, tty->termios.c_iflag); 2355 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2356 old_termios->c_cflag, old_termios->c_iflag); 2357 dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); 2358 2359 if (edge_port == NULL) 2360 return; 2361 /* change the port settings to the new ones specified */ 2362 change_port_settings(tty, edge_port, old_termios); 2363} 2364 2365static int edge_tiocmset(struct tty_struct *tty, 2366 unsigned int set, unsigned int clear) 2367{ 2368 struct usb_serial_port *port = tty->driver_data; 2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2370 unsigned int mcr; 2371 unsigned long flags; 2372 2373 spin_lock_irqsave(&edge_port->ep_lock, flags); 2374 mcr = edge_port->shadow_mcr; 2375 if (set & TIOCM_RTS) 2376 mcr |= MCR_RTS; 2377 if (set & TIOCM_DTR) 2378 mcr |= MCR_DTR; 2379 if (set & TIOCM_LOOP) 2380 mcr |= MCR_LOOPBACK; 2381 2382 if (clear & TIOCM_RTS) 2383 mcr &= ~MCR_RTS; 2384 if (clear & TIOCM_DTR) 2385 mcr &= ~MCR_DTR; 2386 if (clear & TIOCM_LOOP) 2387 mcr &= ~MCR_LOOPBACK; 2388 2389 edge_port->shadow_mcr = mcr; 2390 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2391 2392 restore_mcr(edge_port, mcr); 2393 return 0; 2394} 2395 2396static int edge_tiocmget(struct tty_struct *tty) 2397{ 2398 struct usb_serial_port *port = tty->driver_data; 2399 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2400 unsigned int result = 0; 2401 unsigned int msr; 2402 unsigned int mcr; 2403 unsigned long flags; 2404 2405 spin_lock_irqsave(&edge_port->ep_lock, flags); 2406 2407 msr = edge_port->shadow_msr; 2408 mcr = edge_port->shadow_mcr; 2409 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2410 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2411 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2412 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2413 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2414 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2415 2416 2417 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2418 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2419 2420 return result; 2421} 2422 2423static int edge_get_icount(struct tty_struct *tty, 2424 struct serial_icounter_struct *icount) 2425{ 2426 struct usb_serial_port *port = tty->driver_data; 2427 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2428 struct async_icount *ic = &edge_port->icount; 2429 2430 icount->cts = ic->cts; 2431 icount->dsr = ic->dsr; 2432 icount->rng = ic->rng; 2433 icount->dcd = ic->dcd; 2434 icount->tx = ic->tx; 2435 icount->rx = ic->rx; 2436 icount->frame = ic->frame; 2437 icount->parity = ic->parity; 2438 icount->overrun = ic->overrun; 2439 icount->brk = ic->brk; 2440 icount->buf_overrun = ic->buf_overrun; 2441 return 0; 2442} 2443 2444static int get_serial_info(struct edgeport_port *edge_port, 2445 struct serial_struct __user *retinfo) 2446{ 2447 struct serial_struct tmp; 2448 2449 if (!retinfo) 2450 return -EFAULT; 2451 2452 memset(&tmp, 0, sizeof(tmp)); 2453 2454 tmp.type = PORT_16550A; 2455 tmp.line = edge_port->port->serial->minor; 2456 tmp.port = edge_port->port->number; 2457 tmp.irq = 0; 2458 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2459 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2460 tmp.baud_base = 9600; 2461 tmp.close_delay = 5*HZ; 2462 tmp.closing_wait = closing_wait; 2463 2464 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2465 return -EFAULT; 2466 return 0; 2467} 2468 2469static int edge_ioctl(struct tty_struct *tty, 2470 unsigned int cmd, unsigned long arg) 2471{ 2472 struct usb_serial_port *port = tty->driver_data; 2473 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2474 struct async_icount cnow; 2475 struct async_icount cprev; 2476 2477 dev_dbg(&port->dev, "%s - port %d, cmd = 0x%x\n", __func__, port->number, cmd); 2478 2479 switch (cmd) { 2480 case TIOCGSERIAL: 2481 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2482 return get_serial_info(edge_port, 2483 (struct serial_struct __user *) arg); 2484 case TIOCMIWAIT: 2485 dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); 2486 cprev = edge_port->icount; 2487 while (1) { 2488 interruptible_sleep_on(&edge_port->delta_msr_wait); 2489 /* see if a signal did it */ 2490 if (signal_pending(current)) 2491 return -ERESTARTSYS; 2492 cnow = edge_port->icount; 2493 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && 2494 cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) 2495 return -EIO; /* no change => error */ 2496 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || 2497 ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || 2498 ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || 2499 ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { 2500 return 0; 2501 } 2502 cprev = cnow; 2503 } 2504 /* not reached */ 2505 break; 2506 } 2507 return -ENOIOCTLCMD; 2508} 2509 2510static void edge_break(struct tty_struct *tty, int break_state) 2511{ 2512 struct usb_serial_port *port = tty->driver_data; 2513 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2514 int status; 2515 int bv = 0; /* Off */ 2516 2517 /* chase the port close */ 2518 chase_port(edge_port, 0); 2519 2520 if (break_state == -1) 2521 bv = 1; /* On */ 2522 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2523 if (status) 2524 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2525 __func__, status); 2526} 2527 2528static int edge_startup(struct usb_serial *serial) 2529{ 2530 struct edgeport_serial *edge_serial; 2531 int status; 2532 2533 /* create our private serial structure */ 2534 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2535 if (edge_serial == NULL) { 2536 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__); 2537 return -ENOMEM; 2538 } 2539 mutex_init(&edge_serial->es_lock); 2540 edge_serial->serial = serial; 2541 usb_set_serial_data(serial, edge_serial); 2542 2543 status = download_fw(edge_serial); 2544 if (status) { 2545 kfree(edge_serial); 2546 return status; 2547 } 2548 2549 return 0; 2550} 2551 2552static void edge_disconnect(struct usb_serial *serial) 2553{ 2554} 2555 2556static void edge_release(struct usb_serial *serial) 2557{ 2558 kfree(usb_get_serial_data(serial)); 2559} 2560 2561static int edge_port_probe(struct usb_serial_port *port) 2562{ 2563 struct edgeport_port *edge_port; 2564 int ret; 2565 2566 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2567 if (!edge_port) 2568 return -ENOMEM; 2569 2570 ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE, 2571 GFP_KERNEL); 2572 if (ret) { 2573 kfree(edge_port); 2574 return -ENOMEM; 2575 } 2576 2577 spin_lock_init(&edge_port->ep_lock); 2578 edge_port->port = port; 2579 edge_port->edge_serial = usb_get_serial_data(port->serial); 2580 edge_port->bUartMode = default_uart_mode; 2581 2582 usb_set_serial_port_data(port, edge_port); 2583 2584 ret = edge_create_sysfs_attrs(port); 2585 if (ret) { 2586 kfifo_free(&edge_port->write_fifo); 2587 kfree(edge_port); 2588 return ret; 2589 } 2590 2591 return 0; 2592} 2593 2594static int edge_port_remove(struct usb_serial_port *port) 2595{ 2596 struct edgeport_port *edge_port; 2597 2598 edge_port = usb_get_serial_port_data(port); 2599 2600 edge_remove_sysfs_attrs(port); 2601 kfifo_free(&edge_port->write_fifo); 2602 kfree(edge_port); 2603 2604 return 0; 2605} 2606 2607/* Sysfs Attributes */ 2608 2609static ssize_t show_uart_mode(struct device *dev, 2610 struct device_attribute *attr, char *buf) 2611{ 2612 struct usb_serial_port *port = to_usb_serial_port(dev); 2613 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2614 2615 return sprintf(buf, "%d\n", edge_port->bUartMode); 2616} 2617 2618static ssize_t store_uart_mode(struct device *dev, 2619 struct device_attribute *attr, const char *valbuf, size_t count) 2620{ 2621 struct usb_serial_port *port = to_usb_serial_port(dev); 2622 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2623 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2624 2625 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2626 2627 if (v < 256) 2628 edge_port->bUartMode = v; 2629 else 2630 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2631 2632 return count; 2633} 2634 2635static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, 2636 store_uart_mode); 2637 2638static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2639{ 2640 return device_create_file(&port->dev, &dev_attr_uart_mode); 2641} 2642 2643static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2644{ 2645 device_remove_file(&port->dev, &dev_attr_uart_mode); 2646 return 0; 2647} 2648 2649 2650static struct usb_serial_driver edgeport_1port_device = { 2651 .driver = { 2652 .owner = THIS_MODULE, 2653 .name = "edgeport_ti_1", 2654 }, 2655 .description = "Edgeport TI 1 port adapter", 2656 .id_table = edgeport_1port_id_table, 2657 .num_ports = 1, 2658 .open = edge_open, 2659 .close = edge_close, 2660 .throttle = edge_throttle, 2661 .unthrottle = edge_unthrottle, 2662 .attach = edge_startup, 2663 .disconnect = edge_disconnect, 2664 .release = edge_release, 2665 .port_probe = edge_port_probe, 2666 .port_remove = edge_port_remove, 2667 .ioctl = edge_ioctl, 2668 .set_termios = edge_set_termios, 2669 .tiocmget = edge_tiocmget, 2670 .tiocmset = edge_tiocmset, 2671 .get_icount = edge_get_icount, 2672 .write = edge_write, 2673 .write_room = edge_write_room, 2674 .chars_in_buffer = edge_chars_in_buffer, 2675 .break_ctl = edge_break, 2676 .read_int_callback = edge_interrupt_callback, 2677 .read_bulk_callback = edge_bulk_in_callback, 2678 .write_bulk_callback = edge_bulk_out_callback, 2679}; 2680 2681static struct usb_serial_driver edgeport_2port_device = { 2682 .driver = { 2683 .owner = THIS_MODULE, 2684 .name = "edgeport_ti_2", 2685 }, 2686 .description = "Edgeport TI 2 port adapter", 2687 .id_table = edgeport_2port_id_table, 2688 .num_ports = 2, 2689 .open = edge_open, 2690 .close = edge_close, 2691 .throttle = edge_throttle, 2692 .unthrottle = edge_unthrottle, 2693 .attach = edge_startup, 2694 .disconnect = edge_disconnect, 2695 .release = edge_release, 2696 .port_probe = edge_port_probe, 2697 .port_remove = edge_port_remove, 2698 .ioctl = edge_ioctl, 2699 .set_termios = edge_set_termios, 2700 .tiocmget = edge_tiocmget, 2701 .tiocmset = edge_tiocmset, 2702 .write = edge_write, 2703 .write_room = edge_write_room, 2704 .chars_in_buffer = edge_chars_in_buffer, 2705 .break_ctl = edge_break, 2706 .read_int_callback = edge_interrupt_callback, 2707 .read_bulk_callback = edge_bulk_in_callback, 2708 .write_bulk_callback = edge_bulk_out_callback, 2709}; 2710 2711static struct usb_serial_driver * const serial_drivers[] = { 2712 &edgeport_1port_device, &edgeport_2port_device, NULL 2713}; 2714 2715module_usb_serial_driver(serial_drivers, id_table_combined); 2716 2717MODULE_AUTHOR(DRIVER_AUTHOR); 2718MODULE_DESCRIPTION(DRIVER_DESC); 2719MODULE_LICENSE("GPL"); 2720MODULE_FIRMWARE("edgeport/down3.bin"); 2721 2722module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2723MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2724 2725module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2726MODULE_PARM_DESC(ignore_cpu_rev, 2727 "Ignore the cpu revision when connecting to a device"); 2728 2729module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2730MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2731