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