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/slab.h> 24 #include <linux/tty.h> 25 #include <linux/tty_driver.h> 26 #include <linux/tty_flip.h> 27 #include <linux/module.h> 28 #include <linux/spinlock.h> 29 #include <linux/mutex.h> 30 #include <linux/serial.h> 31 #include <linux/swab.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 u16 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 /* 301 * NOTE: Must use swab as wIndex is sent in little-endian 302 * byte order regardless of host byte order. 303 */ 304 be_start_address = swab16((u16)start_address); 305 status = ti_vread_sync(dev, UMPC_MEMORY_READ, 306 (__u16)address_type, 307 be_start_address, 308 buffer, read_length); 309 310 if (status) { 311 dev_dbg(&dev->dev, "%s - ERROR %x\n", __func__, status); 312 return status; 313 } 314 315 if (read_length > 1) 316 usb_serial_debug_data(&dev->dev, __func__, read_length, buffer); 317 318 /* Update pointers/length */ 319 start_address += read_length; 320 buffer += read_length; 321 length -= read_length; 322 } 323 324 return status; 325 } 326 327 static int read_ram(struct usb_device *dev, int start_address, 328 int length, __u8 *buffer) 329 { 330 return read_download_mem(dev, start_address, length, 331 DTK_ADDR_SPACE_XDATA, buffer); 332 } 333 334 /* Read edgeport memory to a given block */ 335 static int read_boot_mem(struct edgeport_serial *serial, 336 int start_address, int length, __u8 *buffer) 337 { 338 int status = 0; 339 int i; 340 341 for (i = 0; i < length; i++) { 342 status = ti_vread_sync(serial->serial->dev, 343 UMPC_MEMORY_READ, serial->TI_I2C_Type, 344 (__u16)(start_address+i), &buffer[i], 0x01); 345 if (status) { 346 dev_dbg(&serial->serial->dev->dev, "%s - ERROR %x\n", __func__, status); 347 return status; 348 } 349 } 350 351 dev_dbg(&serial->serial->dev->dev, "%s - start_address = %x, length = %d\n", 352 __func__, start_address, length); 353 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 354 355 serial->TiReadI2C = 1; 356 357 return status; 358 } 359 360 /* Write given block to TI EPROM memory */ 361 static int write_boot_mem(struct edgeport_serial *serial, 362 int start_address, int length, __u8 *buffer) 363 { 364 int status = 0; 365 int i; 366 u8 *temp; 367 368 /* Must do a read before write */ 369 if (!serial->TiReadI2C) { 370 temp = kmalloc(1, GFP_KERNEL); 371 if (!temp) 372 return -ENOMEM; 373 374 status = read_boot_mem(serial, 0, 1, temp); 375 kfree(temp); 376 if (status) 377 return status; 378 } 379 380 for (i = 0; i < length; ++i) { 381 status = ti_vsend_sync(serial->serial->dev, 382 UMPC_MEMORY_WRITE, buffer[i], 383 (__u16)(i + start_address), NULL, 0); 384 if (status) 385 return status; 386 } 387 388 dev_dbg(&serial->serial->dev->dev, "%s - start_sddr = %x, length = %d\n", __func__, start_address, length); 389 usb_serial_debug_data(&serial->serial->dev->dev, __func__, length, buffer); 390 391 return status; 392 } 393 394 395 /* Write edgeport I2C memory to TI chip */ 396 static int write_i2c_mem(struct edgeport_serial *serial, 397 int start_address, int length, __u8 address_type, __u8 *buffer) 398 { 399 struct device *dev = &serial->serial->dev->dev; 400 int status = 0; 401 int write_length; 402 u16 be_start_address; 403 404 /* We can only send a maximum of 1 aligned byte page at a time */ 405 406 /* calculate the number of bytes left in the first page */ 407 write_length = EPROM_PAGE_SIZE - 408 (start_address & (EPROM_PAGE_SIZE - 1)); 409 410 if (write_length > length) 411 write_length = length; 412 413 dev_dbg(dev, "%s - BytesInFirstPage Addr = %x, length = %d\n", 414 __func__, start_address, write_length); 415 usb_serial_debug_data(dev, __func__, write_length, buffer); 416 417 /* 418 * Write first page. 419 * 420 * NOTE: Must use swab as wIndex is sent in little-endian byte order 421 * regardless of host byte order. 422 */ 423 be_start_address = swab16((u16)start_address); 424 status = ti_vsend_sync(serial->serial->dev, 425 UMPC_MEMORY_WRITE, (__u16)address_type, 426 be_start_address, 427 buffer, write_length); 428 if (status) { 429 dev_dbg(dev, "%s - ERROR %d\n", __func__, status); 430 return status; 431 } 432 433 length -= write_length; 434 start_address += write_length; 435 buffer += write_length; 436 437 /* We should be aligned now -- can write 438 max page size bytes at a time */ 439 while (length) { 440 if (length > EPROM_PAGE_SIZE) 441 write_length = EPROM_PAGE_SIZE; 442 else 443 write_length = length; 444 445 dev_dbg(dev, "%s - Page Write Addr = %x, length = %d\n", 446 __func__, start_address, write_length); 447 usb_serial_debug_data(dev, __func__, write_length, buffer); 448 449 /* 450 * Write next page. 451 * 452 * NOTE: Must use swab as wIndex is sent in little-endian byte 453 * order regardless of host byte order. 454 */ 455 be_start_address = swab16((u16)start_address); 456 status = ti_vsend_sync(serial->serial->dev, UMPC_MEMORY_WRITE, 457 (__u16)address_type, 458 be_start_address, 459 buffer, write_length); 460 if (status) { 461 dev_err(dev, "%s - ERROR %d\n", __func__, status); 462 return status; 463 } 464 465 length -= write_length; 466 start_address += write_length; 467 buffer += write_length; 468 } 469 return status; 470 } 471 472 /* Examine the UMP DMA registers and LSR 473 * 474 * Check the MSBit of the X and Y DMA byte count registers. 475 * A zero in this bit indicates that the TX DMA buffers are empty 476 * then check the TX Empty bit in the UART. 477 */ 478 static int tx_active(struct edgeport_port *port) 479 { 480 int status; 481 struct out_endpoint_desc_block *oedb; 482 __u8 *lsr; 483 int bytes_left = 0; 484 485 oedb = kmalloc(sizeof(*oedb), GFP_KERNEL); 486 if (!oedb) 487 return -ENOMEM; 488 489 lsr = kmalloc(1, GFP_KERNEL); /* Sigh, that's right, just one byte, 490 as not all platforms can do DMA 491 from stack */ 492 if (!lsr) { 493 kfree(oedb); 494 return -ENOMEM; 495 } 496 /* Read the DMA Count Registers */ 497 status = read_ram(port->port->serial->dev, port->dma_address, 498 sizeof(*oedb), (void *)oedb); 499 if (status) 500 goto exit_is_tx_active; 501 502 dev_dbg(&port->port->dev, "%s - XByteCount 0x%X\n", __func__, oedb->XByteCount); 503 504 /* and the LSR */ 505 status = read_ram(port->port->serial->dev, 506 port->uart_base + UMPMEM_OFFS_UART_LSR, 1, lsr); 507 508 if (status) 509 goto exit_is_tx_active; 510 dev_dbg(&port->port->dev, "%s - LSR = 0x%X\n", __func__, *lsr); 511 512 /* If either buffer has data or we are transmitting then return TRUE */ 513 if ((oedb->XByteCount & 0x80) != 0) 514 bytes_left += 64; 515 516 if ((*lsr & UMP_UART_LSR_TX_MASK) == 0) 517 bytes_left += 1; 518 519 /* We return Not Active if we get any kind of error */ 520 exit_is_tx_active: 521 dev_dbg(&port->port->dev, "%s - return %d\n", __func__, bytes_left); 522 523 kfree(lsr); 524 kfree(oedb); 525 return bytes_left; 526 } 527 528 static int choose_config(struct usb_device *dev) 529 { 530 /* 531 * There may be multiple configurations on this device, in which case 532 * we would need to read and parse all of them to find out which one 533 * we want. However, we just support one config at this point, 534 * configuration # 1, which is Config Descriptor 0. 535 */ 536 537 dev_dbg(&dev->dev, "%s - Number of Interfaces = %d\n", 538 __func__, dev->config->desc.bNumInterfaces); 539 dev_dbg(&dev->dev, "%s - MAX Power = %d\n", 540 __func__, dev->config->desc.bMaxPower * 2); 541 542 if (dev->config->desc.bNumInterfaces != 1) { 543 dev_err(&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__); 544 return -ENODEV; 545 } 546 547 return 0; 548 } 549 550 static int read_rom(struct edgeport_serial *serial, 551 int start_address, int length, __u8 *buffer) 552 { 553 int status; 554 555 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 556 status = read_download_mem(serial->serial->dev, 557 start_address, 558 length, 559 serial->TI_I2C_Type, 560 buffer); 561 } else { 562 status = read_boot_mem(serial, start_address, length, 563 buffer); 564 } 565 return status; 566 } 567 568 static int write_rom(struct edgeport_serial *serial, int start_address, 569 int length, __u8 *buffer) 570 { 571 if (serial->product_info.TiMode == TI_MODE_BOOT) 572 return write_boot_mem(serial, start_address, length, 573 buffer); 574 575 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) 576 return write_i2c_mem(serial, start_address, length, 577 serial->TI_I2C_Type, buffer); 578 return -EINVAL; 579 } 580 581 582 583 /* Read a descriptor header from I2C based on type */ 584 static int get_descriptor_addr(struct edgeport_serial *serial, 585 int desc_type, struct ti_i2c_desc *rom_desc) 586 { 587 int start_address; 588 int status; 589 590 /* Search for requested descriptor in I2C */ 591 start_address = 2; 592 do { 593 status = read_rom(serial, 594 start_address, 595 sizeof(struct ti_i2c_desc), 596 (__u8 *)rom_desc); 597 if (status) 598 return 0; 599 600 if (rom_desc->Type == desc_type) 601 return start_address; 602 603 start_address = start_address + sizeof(struct ti_i2c_desc) + 604 le16_to_cpu(rom_desc->Size); 605 606 } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type); 607 608 return 0; 609 } 610 611 /* Validate descriptor checksum */ 612 static int valid_csum(struct ti_i2c_desc *rom_desc, __u8 *buffer) 613 { 614 __u16 i; 615 __u8 cs = 0; 616 617 for (i = 0; i < le16_to_cpu(rom_desc->Size); i++) 618 cs = (__u8)(cs + buffer[i]); 619 620 if (cs != rom_desc->CheckSum) { 621 pr_debug("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs); 622 return -EINVAL; 623 } 624 return 0; 625 } 626 627 /* Make sure that the I2C image is good */ 628 static int check_i2c_image(struct edgeport_serial *serial) 629 { 630 struct device *dev = &serial->serial->dev->dev; 631 int status = 0; 632 struct ti_i2c_desc *rom_desc; 633 int start_address = 2; 634 __u8 *buffer; 635 __u16 ttype; 636 637 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 638 if (!rom_desc) 639 return -ENOMEM; 640 641 buffer = kmalloc(TI_MAX_I2C_SIZE, GFP_KERNEL); 642 if (!buffer) { 643 kfree(rom_desc); 644 return -ENOMEM; 645 } 646 647 /* Read the first byte (Signature0) must be 0x52 or 0x10 */ 648 status = read_rom(serial, 0, 1, buffer); 649 if (status) 650 goto out; 651 652 if (*buffer != UMP5152 && *buffer != UMP3410) { 653 dev_err(dev, "%s - invalid buffer signature\n", __func__); 654 status = -ENODEV; 655 goto out; 656 } 657 658 do { 659 /* Validate the I2C */ 660 status = read_rom(serial, 661 start_address, 662 sizeof(struct ti_i2c_desc), 663 (__u8 *)rom_desc); 664 if (status) 665 break; 666 667 if ((start_address + sizeof(struct ti_i2c_desc) + 668 le16_to_cpu(rom_desc->Size)) > TI_MAX_I2C_SIZE) { 669 status = -ENODEV; 670 dev_dbg(dev, "%s - structure too big, erroring out.\n", __func__); 671 break; 672 } 673 674 dev_dbg(dev, "%s Type = 0x%x\n", __func__, rom_desc->Type); 675 676 /* Skip type 2 record */ 677 ttype = rom_desc->Type & 0x0f; 678 if (ttype != I2C_DESC_TYPE_FIRMWARE_BASIC 679 && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO) { 680 /* Read the descriptor data */ 681 status = read_rom(serial, start_address + 682 sizeof(struct ti_i2c_desc), 683 le16_to_cpu(rom_desc->Size), 684 buffer); 685 if (status) 686 break; 687 688 status = valid_csum(rom_desc, buffer); 689 if (status) 690 break; 691 } 692 start_address = start_address + sizeof(struct ti_i2c_desc) + 693 le16_to_cpu(rom_desc->Size); 694 695 } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && 696 (start_address < TI_MAX_I2C_SIZE)); 697 698 if ((rom_desc->Type != I2C_DESC_TYPE_ION) || 699 (start_address > TI_MAX_I2C_SIZE)) 700 status = -ENODEV; 701 702 out: 703 kfree(buffer); 704 kfree(rom_desc); 705 return status; 706 } 707 708 static int get_manuf_info(struct edgeport_serial *serial, __u8 *buffer) 709 { 710 int status; 711 int start_address; 712 struct ti_i2c_desc *rom_desc; 713 struct edge_ti_manuf_descriptor *desc; 714 struct device *dev = &serial->serial->dev->dev; 715 716 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 717 if (!rom_desc) 718 return -ENOMEM; 719 720 start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_ION, 721 rom_desc); 722 723 if (!start_address) { 724 dev_dbg(dev, "%s - Edge Descriptor not found in I2C\n", __func__); 725 status = -ENODEV; 726 goto exit; 727 } 728 729 /* Read the descriptor data */ 730 status = read_rom(serial, start_address+sizeof(struct ti_i2c_desc), 731 le16_to_cpu(rom_desc->Size), buffer); 732 if (status) 733 goto exit; 734 735 status = valid_csum(rom_desc, buffer); 736 737 desc = (struct edge_ti_manuf_descriptor *)buffer; 738 dev_dbg(dev, "%s - IonConfig 0x%x\n", __func__, desc->IonConfig); 739 dev_dbg(dev, "%s - Version %d\n", __func__, desc->Version); 740 dev_dbg(dev, "%s - Cpu/Board 0x%x\n", __func__, desc->CpuRev_BoardRev); 741 dev_dbg(dev, "%s - NumPorts %d\n", __func__, desc->NumPorts); 742 dev_dbg(dev, "%s - NumVirtualPorts %d\n", __func__, desc->NumVirtualPorts); 743 dev_dbg(dev, "%s - TotalPorts %d\n", __func__, desc->TotalPorts); 744 745 exit: 746 kfree(rom_desc); 747 return status; 748 } 749 750 /* Build firmware header used for firmware update */ 751 static int build_i2c_fw_hdr(__u8 *header, struct device *dev) 752 { 753 __u8 *buffer; 754 int buffer_size; 755 int i; 756 int err; 757 __u8 cs = 0; 758 struct ti_i2c_desc *i2c_header; 759 struct ti_i2c_image_header *img_header; 760 struct ti_i2c_firmware_rec *firmware_rec; 761 const struct firmware *fw; 762 const char *fw_name = "edgeport/down3.bin"; 763 764 /* In order to update the I2C firmware we must change the type 2 record 765 * to type 0xF2. This will force the UMP to come up in Boot Mode. 766 * Then while in boot mode, the driver will download the latest 767 * firmware (padded to 15.5k) into the UMP ram. And finally when the 768 * device comes back up in download mode the driver will cause the new 769 * firmware to be copied from the UMP Ram to I2C and the firmware will 770 * update the record type from 0xf2 to 0x02. 771 */ 772 773 /* Allocate a 15.5k buffer + 2 bytes for version number 774 * (Firmware Record) */ 775 buffer_size = (((1024 * 16) - 512 ) + 776 sizeof(struct ti_i2c_firmware_rec)); 777 778 buffer = kmalloc(buffer_size, GFP_KERNEL); 779 if (!buffer) 780 return -ENOMEM; 781 782 // Set entire image of 0xffs 783 memset(buffer, 0xff, buffer_size); 784 785 err = request_firmware(&fw, fw_name, dev); 786 if (err) { 787 dev_err(dev, "Failed to load image \"%s\" err %d\n", 788 fw_name, err); 789 kfree(buffer); 790 return err; 791 } 792 793 /* Save Download Version Number */ 794 OperationalMajorVersion = fw->data[0]; 795 OperationalMinorVersion = fw->data[1]; 796 OperationalBuildNumber = fw->data[2] | (fw->data[3] << 8); 797 798 /* Copy version number into firmware record */ 799 firmware_rec = (struct ti_i2c_firmware_rec *)buffer; 800 801 firmware_rec->Ver_Major = OperationalMajorVersion; 802 firmware_rec->Ver_Minor = OperationalMinorVersion; 803 804 /* Pointer to fw_down memory image */ 805 img_header = (struct ti_i2c_image_header *)&fw->data[4]; 806 807 memcpy(buffer + sizeof(struct ti_i2c_firmware_rec), 808 &fw->data[4 + sizeof(struct ti_i2c_image_header)], 809 le16_to_cpu(img_header->Length)); 810 811 release_firmware(fw); 812 813 for (i=0; i < buffer_size; i++) { 814 cs = (__u8)(cs + buffer[i]); 815 } 816 817 kfree(buffer); 818 819 /* Build new header */ 820 i2c_header = (struct ti_i2c_desc *)header; 821 firmware_rec = (struct ti_i2c_firmware_rec*)i2c_header->Data; 822 823 i2c_header->Type = I2C_DESC_TYPE_FIRMWARE_BLANK; 824 i2c_header->Size = cpu_to_le16(buffer_size); 825 i2c_header->CheckSum = cs; 826 firmware_rec->Ver_Major = OperationalMajorVersion; 827 firmware_rec->Ver_Minor = OperationalMinorVersion; 828 829 return 0; 830 } 831 832 /* Try to figure out what type of I2c we have */ 833 static int i2c_type_bootmode(struct edgeport_serial *serial) 834 { 835 struct device *dev = &serial->serial->dev->dev; 836 int status; 837 u8 *data; 838 839 data = kmalloc(1, GFP_KERNEL); 840 if (!data) 841 return -ENOMEM; 842 843 /* Try to read type 2 */ 844 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 845 DTK_ADDR_SPACE_I2C_TYPE_II, 0, data, 0x01); 846 if (status) 847 dev_dbg(dev, "%s - read 2 status error = %d\n", __func__, status); 848 else 849 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 850 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 851 dev_dbg(dev, "%s - ROM_TYPE_II\n", __func__); 852 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 853 goto out; 854 } 855 856 /* Try to read type 3 */ 857 status = ti_vread_sync(serial->serial->dev, UMPC_MEMORY_READ, 858 DTK_ADDR_SPACE_I2C_TYPE_III, 0, data, 0x01); 859 if (status) 860 dev_dbg(dev, "%s - read 3 status error = %d\n", __func__, status); 861 else 862 dev_dbg(dev, "%s - read 2 data = 0x%x\n", __func__, *data); 863 if ((!status) && (*data == UMP5152 || *data == UMP3410)) { 864 dev_dbg(dev, "%s - ROM_TYPE_III\n", __func__); 865 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III; 866 goto out; 867 } 868 869 dev_dbg(dev, "%s - Unknown\n", __func__); 870 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 871 status = -ENODEV; 872 out: 873 kfree(data); 874 return status; 875 } 876 877 static int bulk_xfer(struct usb_serial *serial, void *buffer, 878 int length, int *num_sent) 879 { 880 int status; 881 882 status = usb_bulk_msg(serial->dev, 883 usb_sndbulkpipe(serial->dev, 884 serial->port[0]->bulk_out_endpointAddress), 885 buffer, length, num_sent, 1000); 886 return status; 887 } 888 889 /* Download given firmware image to the device (IN BOOT MODE) */ 890 static int download_code(struct edgeport_serial *serial, __u8 *image, 891 int image_length) 892 { 893 int status = 0; 894 int pos; 895 int transfer; 896 int done; 897 898 /* Transfer firmware image */ 899 for (pos = 0; pos < image_length; ) { 900 /* Read the next buffer from file */ 901 transfer = image_length - pos; 902 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE) 903 transfer = EDGE_FW_BULK_MAX_PACKET_SIZE; 904 905 /* Transfer data */ 906 status = bulk_xfer(serial->serial, &image[pos], 907 transfer, &done); 908 if (status) 909 break; 910 /* Advance buffer pointer */ 911 pos += done; 912 } 913 914 return status; 915 } 916 917 /* FIXME!!! */ 918 static int config_boot_dev(struct usb_device *dev) 919 { 920 return 0; 921 } 922 923 static int ti_cpu_rev(struct edge_ti_manuf_descriptor *desc) 924 { 925 return TI_GET_CPU_REVISION(desc->CpuRev_BoardRev); 926 } 927 928 /** 929 * DownloadTIFirmware - Download run-time operating firmware to the TI5052 930 * 931 * This routine downloads the main operating code into the TI5052, using the 932 * boot code already burned into E2PROM or ROM. 933 */ 934 static int download_fw(struct edgeport_serial *serial) 935 { 936 struct device *dev = &serial->serial->dev->dev; 937 int status = 0; 938 int start_address; 939 struct edge_ti_manuf_descriptor *ti_manuf_desc; 940 struct usb_interface_descriptor *interface; 941 int download_cur_ver; 942 int download_new_ver; 943 944 /* This routine is entered by both the BOOT mode and the Download mode 945 * We can determine which code is running by the reading the config 946 * descriptor and if we have only one bulk pipe it is in boot mode 947 */ 948 serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP; 949 950 /* Default to type 2 i2c */ 951 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 952 953 status = choose_config(serial->serial->dev); 954 if (status) 955 return status; 956 957 interface = &serial->serial->interface->cur_altsetting->desc; 958 if (!interface) { 959 dev_err(dev, "%s - no interface set, error!\n", __func__); 960 return -ENODEV; 961 } 962 963 /* 964 * Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING 965 * if we have more than one endpoint we are definitely in download 966 * mode 967 */ 968 if (interface->bNumEndpoints > 1) 969 serial->product_info.TiMode = TI_MODE_DOWNLOAD; 970 else 971 /* Otherwise we will remain in configuring mode */ 972 serial->product_info.TiMode = TI_MODE_CONFIGURING; 973 974 /********************************************************************/ 975 /* Download Mode */ 976 /********************************************************************/ 977 if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) { 978 struct ti_i2c_desc *rom_desc; 979 980 dev_dbg(dev, "%s - RUNNING IN DOWNLOAD MODE\n", __func__); 981 982 status = check_i2c_image(serial); 983 if (status) { 984 dev_dbg(dev, "%s - DOWNLOAD MODE -- BAD I2C\n", __func__); 985 return status; 986 } 987 988 /* Validate Hardware version number 989 * Read Manufacturing Descriptor from TI Based Edgeport 990 */ 991 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 992 if (!ti_manuf_desc) 993 return -ENOMEM; 994 995 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 996 if (status) { 997 kfree(ti_manuf_desc); 998 return status; 999 } 1000 1001 /* Check version number of ION descriptor */ 1002 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1003 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1004 __func__, ti_cpu_rev(ti_manuf_desc)); 1005 kfree(ti_manuf_desc); 1006 return -EINVAL; 1007 } 1008 1009 rom_desc = kmalloc(sizeof(*rom_desc), GFP_KERNEL); 1010 if (!rom_desc) { 1011 kfree(ti_manuf_desc); 1012 return -ENOMEM; 1013 } 1014 1015 /* Search for type 2 record (firmware record) */ 1016 start_address = get_descriptor_addr(serial, 1017 I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc); 1018 if (start_address != 0) { 1019 struct ti_i2c_firmware_rec *firmware_version; 1020 u8 *record; 1021 1022 dev_dbg(dev, "%s - Found Type FIRMWARE (Type 2) record\n", __func__); 1023 1024 firmware_version = kmalloc(sizeof(*firmware_version), 1025 GFP_KERNEL); 1026 if (!firmware_version) { 1027 kfree(rom_desc); 1028 kfree(ti_manuf_desc); 1029 return -ENOMEM; 1030 } 1031 1032 /* Validate version number 1033 * Read the descriptor data 1034 */ 1035 status = read_rom(serial, start_address + 1036 sizeof(struct ti_i2c_desc), 1037 sizeof(struct ti_i2c_firmware_rec), 1038 (__u8 *)firmware_version); 1039 if (status) { 1040 kfree(firmware_version); 1041 kfree(rom_desc); 1042 kfree(ti_manuf_desc); 1043 return status; 1044 } 1045 1046 /* Check version number of download with current 1047 version in I2c */ 1048 download_cur_ver = (firmware_version->Ver_Major << 8) + 1049 (firmware_version->Ver_Minor); 1050 download_new_ver = (OperationalMajorVersion << 8) + 1051 (OperationalMinorVersion); 1052 1053 dev_dbg(dev, "%s - >> FW Versions Device %d.%d Driver %d.%d\n", 1054 __func__, firmware_version->Ver_Major, 1055 firmware_version->Ver_Minor, 1056 OperationalMajorVersion, 1057 OperationalMinorVersion); 1058 1059 /* Check if we have an old version in the I2C and 1060 update if necessary */ 1061 if (download_cur_ver < download_new_ver) { 1062 dev_dbg(dev, "%s - Update I2C dld from %d.%d to %d.%d\n", 1063 __func__, 1064 firmware_version->Ver_Major, 1065 firmware_version->Ver_Minor, 1066 OperationalMajorVersion, 1067 OperationalMinorVersion); 1068 1069 record = kmalloc(1, GFP_KERNEL); 1070 if (!record) { 1071 kfree(firmware_version); 1072 kfree(rom_desc); 1073 kfree(ti_manuf_desc); 1074 return -ENOMEM; 1075 } 1076 /* In order to update the I2C firmware we must 1077 * change the type 2 record to type 0xF2. This 1078 * will force the UMP to come up in Boot Mode. 1079 * Then while in boot mode, the driver will 1080 * download the latest firmware (padded to 1081 * 15.5k) into the UMP ram. Finally when the 1082 * device comes back up in download mode the 1083 * driver will cause the new firmware to be 1084 * copied from the UMP Ram to I2C and the 1085 * firmware will update the record type from 1086 * 0xf2 to 0x02. 1087 */ 1088 *record = I2C_DESC_TYPE_FIRMWARE_BLANK; 1089 1090 /* Change the I2C Firmware record type to 1091 0xf2 to trigger an update */ 1092 status = write_rom(serial, start_address, 1093 sizeof(*record), record); 1094 if (status) { 1095 kfree(record); 1096 kfree(firmware_version); 1097 kfree(rom_desc); 1098 kfree(ti_manuf_desc); 1099 return status; 1100 } 1101 1102 /* verify the write -- must do this in order 1103 * for write to complete before we do the 1104 * hardware reset 1105 */ 1106 status = read_rom(serial, 1107 start_address, 1108 sizeof(*record), 1109 record); 1110 if (status) { 1111 kfree(record); 1112 kfree(firmware_version); 1113 kfree(rom_desc); 1114 kfree(ti_manuf_desc); 1115 return status; 1116 } 1117 1118 if (*record != I2C_DESC_TYPE_FIRMWARE_BLANK) { 1119 dev_err(dev, "%s - error resetting device\n", __func__); 1120 kfree(record); 1121 kfree(firmware_version); 1122 kfree(rom_desc); 1123 kfree(ti_manuf_desc); 1124 return -ENODEV; 1125 } 1126 1127 dev_dbg(dev, "%s - HARDWARE RESET\n", __func__); 1128 1129 /* Reset UMP -- Back to BOOT MODE */ 1130 status = ti_vsend_sync(serial->serial->dev, 1131 UMPC_HARDWARE_RESET, 1132 0, 0, NULL, 0); 1133 1134 dev_dbg(dev, "%s - HARDWARE RESET return %d\n", __func__, status); 1135 1136 /* return an error on purpose. */ 1137 kfree(record); 1138 kfree(firmware_version); 1139 kfree(rom_desc); 1140 kfree(ti_manuf_desc); 1141 return -ENODEV; 1142 } 1143 kfree(firmware_version); 1144 } 1145 /* Search for type 0xF2 record (firmware blank record) */ 1146 else if ((start_address = get_descriptor_addr(serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) { 1147 #define HEADER_SIZE (sizeof(struct ti_i2c_desc) + \ 1148 sizeof(struct ti_i2c_firmware_rec)) 1149 __u8 *header; 1150 __u8 *vheader; 1151 1152 header = kmalloc(HEADER_SIZE, GFP_KERNEL); 1153 if (!header) { 1154 kfree(rom_desc); 1155 kfree(ti_manuf_desc); 1156 return -ENOMEM; 1157 } 1158 1159 vheader = kmalloc(HEADER_SIZE, GFP_KERNEL); 1160 if (!vheader) { 1161 kfree(header); 1162 kfree(rom_desc); 1163 kfree(ti_manuf_desc); 1164 return -ENOMEM; 1165 } 1166 1167 dev_dbg(dev, "%s - Found Type BLANK FIRMWARE (Type F2) record\n", __func__); 1168 1169 /* 1170 * In order to update the I2C firmware we must change 1171 * the type 2 record to type 0xF2. This will force the 1172 * UMP to come up in Boot Mode. Then while in boot 1173 * mode, the driver will download the latest firmware 1174 * (padded to 15.5k) into the UMP ram. Finally when the 1175 * device comes back up in download mode the driver 1176 * will cause the new firmware to be copied from the 1177 * UMP Ram to I2C and the firmware will update the 1178 * record type from 0xf2 to 0x02. 1179 */ 1180 status = build_i2c_fw_hdr(header, dev); 1181 if (status) { 1182 kfree(vheader); 1183 kfree(header); 1184 kfree(rom_desc); 1185 kfree(ti_manuf_desc); 1186 return -EINVAL; 1187 } 1188 1189 /* Update I2C with type 0xf2 record with correct 1190 size and checksum */ 1191 status = write_rom(serial, 1192 start_address, 1193 HEADER_SIZE, 1194 header); 1195 if (status) { 1196 kfree(vheader); 1197 kfree(header); 1198 kfree(rom_desc); 1199 kfree(ti_manuf_desc); 1200 return -EINVAL; 1201 } 1202 1203 /* verify the write -- must do this in order for 1204 write to complete before we do the hardware reset */ 1205 status = read_rom(serial, start_address, 1206 HEADER_SIZE, vheader); 1207 1208 if (status) { 1209 dev_dbg(dev, "%s - can't read header back\n", __func__); 1210 kfree(vheader); 1211 kfree(header); 1212 kfree(rom_desc); 1213 kfree(ti_manuf_desc); 1214 return status; 1215 } 1216 if (memcmp(vheader, header, HEADER_SIZE)) { 1217 dev_dbg(dev, "%s - write download record failed\n", __func__); 1218 kfree(vheader); 1219 kfree(header); 1220 kfree(rom_desc); 1221 kfree(ti_manuf_desc); 1222 return -EINVAL; 1223 } 1224 1225 kfree(vheader); 1226 kfree(header); 1227 1228 dev_dbg(dev, "%s - Start firmware update\n", __func__); 1229 1230 /* Tell firmware to copy download image into I2C */ 1231 status = ti_vsend_sync(serial->serial->dev, 1232 UMPC_COPY_DNLD_TO_I2C, 0, 0, NULL, 0); 1233 1234 dev_dbg(dev, "%s - Update complete 0x%x\n", __func__, status); 1235 if (status) { 1236 dev_err(dev, 1237 "%s - UMPC_COPY_DNLD_TO_I2C failed\n", 1238 __func__); 1239 kfree(rom_desc); 1240 kfree(ti_manuf_desc); 1241 return status; 1242 } 1243 } 1244 1245 // The device is running the download code 1246 kfree(rom_desc); 1247 kfree(ti_manuf_desc); 1248 return 0; 1249 } 1250 1251 /********************************************************************/ 1252 /* Boot Mode */ 1253 /********************************************************************/ 1254 dev_dbg(dev, "%s - RUNNING IN BOOT MODE\n", __func__); 1255 1256 /* Configure the TI device so we can use the BULK pipes for download */ 1257 status = config_boot_dev(serial->serial->dev); 1258 if (status) 1259 return status; 1260 1261 if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) 1262 != USB_VENDOR_ID_ION) { 1263 dev_dbg(dev, "%s - VID = 0x%x\n", __func__, 1264 le16_to_cpu(serial->serial->dev->descriptor.idVendor)); 1265 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II; 1266 goto stayinbootmode; 1267 } 1268 1269 /* We have an ION device (I2c Must be programmed) 1270 Determine I2C image type */ 1271 if (i2c_type_bootmode(serial)) 1272 goto stayinbootmode; 1273 1274 /* Check for ION Vendor ID and that the I2C is valid */ 1275 if (!check_i2c_image(serial)) { 1276 struct ti_i2c_image_header *header; 1277 int i; 1278 __u8 cs = 0; 1279 __u8 *buffer; 1280 int buffer_size; 1281 int err; 1282 const struct firmware *fw; 1283 const char *fw_name = "edgeport/down3.bin"; 1284 1285 /* Validate Hardware version number 1286 * Read Manufacturing Descriptor from TI Based Edgeport 1287 */ 1288 ti_manuf_desc = kmalloc(sizeof(*ti_manuf_desc), GFP_KERNEL); 1289 if (!ti_manuf_desc) 1290 return -ENOMEM; 1291 1292 status = get_manuf_info(serial, (__u8 *)ti_manuf_desc); 1293 if (status) { 1294 kfree(ti_manuf_desc); 1295 goto stayinbootmode; 1296 } 1297 1298 /* Check for version 2 */ 1299 if (!ignore_cpu_rev && ti_cpu_rev(ti_manuf_desc) < 2) { 1300 dev_dbg(dev, "%s - Wrong CPU Rev %d (Must be 2)\n", 1301 __func__, ti_cpu_rev(ti_manuf_desc)); 1302 kfree(ti_manuf_desc); 1303 goto stayinbootmode; 1304 } 1305 1306 kfree(ti_manuf_desc); 1307 1308 /* 1309 * In order to update the I2C firmware we must change the type 1310 * 2 record to type 0xF2. This will force the UMP to come up 1311 * in Boot Mode. Then while in boot mode, the driver will 1312 * download the latest firmware (padded to 15.5k) into the 1313 * UMP ram. Finally when the device comes back up in download 1314 * mode the driver will cause the new firmware to be copied 1315 * from the UMP Ram to I2C and the firmware will update the 1316 * record type from 0xf2 to 0x02. 1317 * 1318 * Do we really have to copy the whole firmware image, 1319 * or could we do this in place! 1320 */ 1321 1322 /* Allocate a 15.5k buffer + 3 byte header */ 1323 buffer_size = (((1024 * 16) - 512) + 1324 sizeof(struct ti_i2c_image_header)); 1325 buffer = kmalloc(buffer_size, GFP_KERNEL); 1326 if (!buffer) 1327 return -ENOMEM; 1328 1329 /* Initialize the buffer to 0xff (pad the buffer) */ 1330 memset(buffer, 0xff, buffer_size); 1331 1332 err = request_firmware(&fw, fw_name, dev); 1333 if (err) { 1334 dev_err(dev, "Failed to load image \"%s\" err %d\n", 1335 fw_name, err); 1336 kfree(buffer); 1337 return err; 1338 } 1339 memcpy(buffer, &fw->data[4], fw->size - 4); 1340 release_firmware(fw); 1341 1342 for (i = sizeof(struct ti_i2c_image_header); 1343 i < buffer_size; i++) { 1344 cs = (__u8)(cs + buffer[i]); 1345 } 1346 1347 header = (struct ti_i2c_image_header *)buffer; 1348 1349 /* update length and checksum after padding */ 1350 header->Length = cpu_to_le16((__u16)(buffer_size - 1351 sizeof(struct ti_i2c_image_header))); 1352 header->CheckSum = cs; 1353 1354 /* Download the operational code */ 1355 dev_dbg(dev, "%s - Downloading operational code image (TI UMP)\n", __func__); 1356 status = download_code(serial, buffer, buffer_size); 1357 1358 kfree(buffer); 1359 1360 if (status) { 1361 dev_dbg(dev, "%s - Error downloading operational code image\n", __func__); 1362 return status; 1363 } 1364 1365 /* Device will reboot */ 1366 serial->product_info.TiMode = TI_MODE_TRANSITIONING; 1367 1368 dev_dbg(dev, "%s - Download successful -- Device rebooting...\n", __func__); 1369 1370 /* return an error on purpose */ 1371 return -ENODEV; 1372 } 1373 1374 stayinbootmode: 1375 /* Eprom is invalid or blank stay in boot mode */ 1376 dev_dbg(dev, "%s - STAYING IN BOOT MODE\n", __func__); 1377 serial->product_info.TiMode = TI_MODE_BOOT; 1378 1379 return 0; 1380 } 1381 1382 1383 static int ti_do_config(struct edgeport_port *port, int feature, int on) 1384 { 1385 int port_number = port->port->port_number; 1386 1387 on = !!on; /* 1 or 0 not bitmask */ 1388 return send_cmd(port->port->serial->dev, 1389 feature, (__u8)(UMPM_UART1_PORT + port_number), 1390 on, NULL, 0); 1391 } 1392 1393 1394 static int restore_mcr(struct edgeport_port *port, __u8 mcr) 1395 { 1396 int status = 0; 1397 1398 dev_dbg(&port->port->dev, "%s - %x\n", __func__, mcr); 1399 1400 status = ti_do_config(port, UMPC_SET_CLR_DTR, mcr & MCR_DTR); 1401 if (status) 1402 return status; 1403 status = ti_do_config(port, UMPC_SET_CLR_RTS, mcr & MCR_RTS); 1404 if (status) 1405 return status; 1406 return ti_do_config(port, UMPC_SET_CLR_LOOPBACK, mcr & MCR_LOOPBACK); 1407 } 1408 1409 /* Convert TI LSR to standard UART flags */ 1410 static __u8 map_line_status(__u8 ti_lsr) 1411 { 1412 __u8 lsr = 0; 1413 1414 #define MAP_FLAG(flagUmp, flagUart) \ 1415 if (ti_lsr & flagUmp) \ 1416 lsr |= flagUart; 1417 1418 MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR) /* overrun */ 1419 MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR) /* parity error */ 1420 MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR) /* framing error */ 1421 MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK) /* break detected */ 1422 MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL) /* rx data available */ 1423 MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY) /* tx hold reg empty */ 1424 1425 #undef MAP_FLAG 1426 1427 return lsr; 1428 } 1429 1430 static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) 1431 { 1432 struct async_icount *icount; 1433 struct tty_struct *tty; 1434 1435 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, msr); 1436 1437 if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1438 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1439 icount = &edge_port->port->icount; 1440 1441 /* update input line counters */ 1442 if (msr & EDGEPORT_MSR_DELTA_CTS) 1443 icount->cts++; 1444 if (msr & EDGEPORT_MSR_DELTA_DSR) 1445 icount->dsr++; 1446 if (msr & EDGEPORT_MSR_DELTA_CD) 1447 icount->dcd++; 1448 if (msr & EDGEPORT_MSR_DELTA_RI) 1449 icount->rng++; 1450 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1451 } 1452 1453 /* Save the new modem status */ 1454 edge_port->shadow_msr = msr & 0xf0; 1455 1456 tty = tty_port_tty_get(&edge_port->port->port); 1457 /* handle CTS flow control */ 1458 if (tty && C_CRTSCTS(tty)) { 1459 if (msr & EDGEPORT_MSR_CTS) { 1460 tty->hw_stopped = 0; 1461 tty_wakeup(tty); 1462 } else { 1463 tty->hw_stopped = 1; 1464 } 1465 } 1466 tty_kref_put(tty); 1467 } 1468 1469 static void handle_new_lsr(struct edgeport_port *edge_port, int lsr_data, 1470 __u8 lsr, __u8 data) 1471 { 1472 struct async_icount *icount; 1473 __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | 1474 LSR_FRM_ERR | LSR_BREAK)); 1475 1476 dev_dbg(&edge_port->port->dev, "%s - %02x\n", __func__, new_lsr); 1477 1478 edge_port->shadow_lsr = lsr; 1479 1480 if (new_lsr & LSR_BREAK) 1481 /* 1482 * Parity and Framing errors only count if they 1483 * occur exclusive of a break being received. 1484 */ 1485 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1486 1487 /* Place LSR data byte into Rx buffer */ 1488 if (lsr_data) 1489 edge_tty_recv(edge_port->port, &data, 1); 1490 1491 /* update input line counters */ 1492 icount = &edge_port->port->icount; 1493 if (new_lsr & LSR_BREAK) 1494 icount->brk++; 1495 if (new_lsr & LSR_OVER_ERR) 1496 icount->overrun++; 1497 if (new_lsr & LSR_PAR_ERR) 1498 icount->parity++; 1499 if (new_lsr & LSR_FRM_ERR) 1500 icount->frame++; 1501 } 1502 1503 1504 static void edge_interrupt_callback(struct urb *urb) 1505 { 1506 struct edgeport_serial *edge_serial = urb->context; 1507 struct usb_serial_port *port; 1508 struct edgeport_port *edge_port; 1509 struct device *dev; 1510 unsigned char *data = urb->transfer_buffer; 1511 int length = urb->actual_length; 1512 int port_number; 1513 int function; 1514 int retval; 1515 __u8 lsr; 1516 __u8 msr; 1517 int status = urb->status; 1518 1519 switch (status) { 1520 case 0: 1521 /* success */ 1522 break; 1523 case -ECONNRESET: 1524 case -ENOENT: 1525 case -ESHUTDOWN: 1526 /* this urb is terminated, clean up */ 1527 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1528 __func__, status); 1529 return; 1530 default: 1531 dev_err(&urb->dev->dev, "%s - nonzero urb status received: " 1532 "%d\n", __func__, status); 1533 goto exit; 1534 } 1535 1536 if (!length) { 1537 dev_dbg(&urb->dev->dev, "%s - no data in urb\n", __func__); 1538 goto exit; 1539 } 1540 1541 dev = &edge_serial->serial->dev->dev; 1542 usb_serial_debug_data(dev, __func__, length, data); 1543 1544 if (length != 2) { 1545 dev_dbg(dev, "%s - expecting packet of size 2, got %d\n", __func__, length); 1546 goto exit; 1547 } 1548 1549 port_number = TIUMP_GET_PORT_FROM_CODE(data[0]); 1550 function = TIUMP_GET_FUNC_FROM_CODE(data[0]); 1551 dev_dbg(dev, "%s - port_number %d, function %d, info 0x%x\n", __func__, 1552 port_number, function, data[1]); 1553 port = edge_serial->serial->port[port_number]; 1554 edge_port = usb_get_serial_port_data(port); 1555 if (!edge_port) { 1556 dev_dbg(dev, "%s - edge_port not found\n", __func__); 1557 return; 1558 } 1559 switch (function) { 1560 case TIUMP_INTERRUPT_CODE_LSR: 1561 lsr = map_line_status(data[1]); 1562 if (lsr & UMP_UART_LSR_DATA_MASK) { 1563 /* Save the LSR event for bulk read 1564 completion routine */ 1565 dev_dbg(dev, "%s - LSR Event Port %u LSR Status = %02x\n", 1566 __func__, port_number, lsr); 1567 edge_port->lsr_event = 1; 1568 edge_port->lsr_mask = lsr; 1569 } else { 1570 dev_dbg(dev, "%s - ===== Port %d LSR Status = %02x ======\n", 1571 __func__, port_number, lsr); 1572 handle_new_lsr(edge_port, 0, lsr, 0); 1573 } 1574 break; 1575 1576 case TIUMP_INTERRUPT_CODE_MSR: /* MSR */ 1577 /* Copy MSR from UMP */ 1578 msr = data[1]; 1579 dev_dbg(dev, "%s - ===== Port %u MSR Status = %02x ======\n", 1580 __func__, port_number, msr); 1581 handle_new_msr(edge_port, msr); 1582 break; 1583 1584 default: 1585 dev_err(&urb->dev->dev, 1586 "%s - Unknown Interrupt code from UMP %x\n", 1587 __func__, data[1]); 1588 break; 1589 1590 } 1591 1592 exit: 1593 retval = usb_submit_urb(urb, GFP_ATOMIC); 1594 if (retval) 1595 dev_err(&urb->dev->dev, 1596 "%s - usb_submit_urb failed with result %d\n", 1597 __func__, retval); 1598 } 1599 1600 static void edge_bulk_in_callback(struct urb *urb) 1601 { 1602 struct edgeport_port *edge_port = urb->context; 1603 struct device *dev = &edge_port->port->dev; 1604 unsigned char *data = urb->transfer_buffer; 1605 int retval = 0; 1606 int port_number; 1607 int status = urb->status; 1608 1609 switch (status) { 1610 case 0: 1611 /* success */ 1612 break; 1613 case -ECONNRESET: 1614 case -ENOENT: 1615 case -ESHUTDOWN: 1616 /* this urb is terminated, clean up */ 1617 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 1618 return; 1619 default: 1620 dev_err(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", __func__, status); 1621 } 1622 1623 if (status == -EPIPE) 1624 goto exit; 1625 1626 if (status) { 1627 dev_err(&urb->dev->dev, "%s - stopping read!\n", __func__); 1628 return; 1629 } 1630 1631 port_number = edge_port->port->port_number; 1632 1633 if (edge_port->lsr_event) { 1634 edge_port->lsr_event = 0; 1635 dev_dbg(dev, "%s ===== Port %u LSR Status = %02x, Data = %02x ======\n", 1636 __func__, port_number, edge_port->lsr_mask, *data); 1637 handle_new_lsr(edge_port, 1, edge_port->lsr_mask, *data); 1638 /* Adjust buffer length/pointer */ 1639 --urb->actual_length; 1640 ++data; 1641 } 1642 1643 if (urb->actual_length) { 1644 usb_serial_debug_data(dev, __func__, urb->actual_length, data); 1645 if (edge_port->close_pending) 1646 dev_dbg(dev, "%s - close pending, dropping data on the floor\n", 1647 __func__); 1648 else 1649 edge_tty_recv(edge_port->port, data, 1650 urb->actual_length); 1651 edge_port->port->icount.rx += urb->actual_length; 1652 } 1653 1654 exit: 1655 /* continue read unless stopped */ 1656 spin_lock(&edge_port->ep_lock); 1657 if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) 1658 retval = usb_submit_urb(urb, GFP_ATOMIC); 1659 else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) 1660 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; 1661 1662 spin_unlock(&edge_port->ep_lock); 1663 if (retval) 1664 dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); 1665 } 1666 1667 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1668 int length) 1669 { 1670 int queued; 1671 1672 queued = tty_insert_flip_string(&port->port, data, length); 1673 if (queued < length) 1674 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1675 __func__, length - queued); 1676 tty_flip_buffer_push(&port->port); 1677 } 1678 1679 static void edge_bulk_out_callback(struct urb *urb) 1680 { 1681 struct usb_serial_port *port = urb->context; 1682 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1683 int status = urb->status; 1684 struct tty_struct *tty; 1685 1686 edge_port->ep_write_urb_in_use = 0; 1687 1688 switch (status) { 1689 case 0: 1690 /* success */ 1691 break; 1692 case -ECONNRESET: 1693 case -ENOENT: 1694 case -ESHUTDOWN: 1695 /* this urb is terminated, clean up */ 1696 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", 1697 __func__, status); 1698 return; 1699 default: 1700 dev_err_console(port, "%s - nonzero write bulk status " 1701 "received: %d\n", __func__, status); 1702 } 1703 1704 /* send any buffered data */ 1705 tty = tty_port_tty_get(&port->port); 1706 edge_send(port, tty); 1707 tty_kref_put(tty); 1708 } 1709 1710 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 1711 { 1712 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1713 struct edgeport_serial *edge_serial; 1714 struct usb_device *dev; 1715 struct urb *urb; 1716 int port_number; 1717 int status; 1718 u16 open_settings; 1719 u8 transaction_timeout; 1720 1721 if (edge_port == NULL) 1722 return -ENODEV; 1723 1724 port_number = port->port_number; 1725 1726 dev = port->serial->dev; 1727 1728 /* turn off loopback */ 1729 status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); 1730 if (status) { 1731 dev_err(&port->dev, 1732 "%s - cannot send clear loopback command, %d\n", 1733 __func__, status); 1734 return status; 1735 } 1736 1737 /* set up the port settings */ 1738 if (tty) 1739 edge_set_termios(tty, port, &tty->termios); 1740 1741 /* open up the port */ 1742 1743 /* milliseconds to timeout for DMA transfer */ 1744 transaction_timeout = 2; 1745 1746 edge_port->ump_read_timeout = 1747 max(20, ((transaction_timeout * 3) / 2)); 1748 1749 /* milliseconds to timeout for DMA transfer */ 1750 open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 1751 UMP_PIPE_TRANS_TIMEOUT_ENA | 1752 (transaction_timeout << 2)); 1753 1754 dev_dbg(&port->dev, "%s - Sending UMPC_OPEN_PORT\n", __func__); 1755 1756 /* Tell TI to open and start the port */ 1757 status = send_cmd(dev, UMPC_OPEN_PORT, 1758 (u8)(UMPM_UART1_PORT + port_number), open_settings, NULL, 0); 1759 if (status) { 1760 dev_err(&port->dev, "%s - cannot send open command, %d\n", 1761 __func__, status); 1762 return status; 1763 } 1764 1765 /* Start the DMA? */ 1766 status = send_cmd(dev, UMPC_START_PORT, 1767 (u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1768 if (status) { 1769 dev_err(&port->dev, "%s - cannot send start DMA command, %d\n", 1770 __func__, status); 1771 return status; 1772 } 1773 1774 /* Clear TX and RX buffers in UMP */ 1775 status = purge_port(port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN); 1776 if (status) { 1777 dev_err(&port->dev, 1778 "%s - cannot send clear buffers command, %d\n", 1779 __func__, status); 1780 return status; 1781 } 1782 1783 /* Read Initial MSR */ 1784 status = ti_vread_sync(dev, UMPC_READ_MSR, 0, 1785 (__u16)(UMPM_UART1_PORT + port_number), 1786 &edge_port->shadow_msr, 1); 1787 if (status) { 1788 dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", 1789 __func__, status); 1790 return status; 1791 } 1792 1793 dev_dbg(&port->dev, "ShadowMSR 0x%X\n", edge_port->shadow_msr); 1794 1795 /* Set Initial MCR */ 1796 edge_port->shadow_mcr = MCR_RTS | MCR_DTR; 1797 dev_dbg(&port->dev, "ShadowMCR 0x%X\n", edge_port->shadow_mcr); 1798 1799 edge_serial = edge_port->edge_serial; 1800 if (mutex_lock_interruptible(&edge_serial->es_lock)) 1801 return -ERESTARTSYS; 1802 if (edge_serial->num_ports_open == 0) { 1803 /* we are the first port to open, post the interrupt urb */ 1804 urb = edge_serial->serial->port[0]->interrupt_in_urb; 1805 if (!urb) { 1806 dev_err(&port->dev, 1807 "%s - no interrupt urb present, exiting\n", 1808 __func__); 1809 status = -EINVAL; 1810 goto release_es_lock; 1811 } 1812 urb->context = edge_serial; 1813 status = usb_submit_urb(urb, GFP_KERNEL); 1814 if (status) { 1815 dev_err(&port->dev, 1816 "%s - usb_submit_urb failed with value %d\n", 1817 __func__, status); 1818 goto release_es_lock; 1819 } 1820 } 1821 1822 /* 1823 * reset the data toggle on the bulk endpoints to work around bug in 1824 * host controllers where things get out of sync some times 1825 */ 1826 usb_clear_halt(dev, port->write_urb->pipe); 1827 usb_clear_halt(dev, port->read_urb->pipe); 1828 1829 /* start up our bulk read urb */ 1830 urb = port->read_urb; 1831 if (!urb) { 1832 dev_err(&port->dev, "%s - no read urb present, exiting\n", 1833 __func__); 1834 status = -EINVAL; 1835 goto unlink_int_urb; 1836 } 1837 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 1838 urb->context = edge_port; 1839 status = usb_submit_urb(urb, GFP_KERNEL); 1840 if (status) { 1841 dev_err(&port->dev, 1842 "%s - read bulk usb_submit_urb failed with value %d\n", 1843 __func__, status); 1844 goto unlink_int_urb; 1845 } 1846 1847 ++edge_serial->num_ports_open; 1848 1849 goto release_es_lock; 1850 1851 unlink_int_urb: 1852 if (edge_port->edge_serial->num_ports_open == 0) 1853 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1854 release_es_lock: 1855 mutex_unlock(&edge_serial->es_lock); 1856 return status; 1857 } 1858 1859 static void edge_close(struct usb_serial_port *port) 1860 { 1861 struct edgeport_serial *edge_serial; 1862 struct edgeport_port *edge_port; 1863 struct usb_serial *serial = port->serial; 1864 unsigned long flags; 1865 int port_number; 1866 1867 edge_serial = usb_get_serial_data(port->serial); 1868 edge_port = usb_get_serial_port_data(port); 1869 if (edge_serial == NULL || edge_port == NULL) 1870 return; 1871 1872 /* The bulkreadcompletion routine will check 1873 * this flag and dump add read data */ 1874 edge_port->close_pending = 1; 1875 1876 usb_kill_urb(port->read_urb); 1877 usb_kill_urb(port->write_urb); 1878 edge_port->ep_write_urb_in_use = 0; 1879 spin_lock_irqsave(&edge_port->ep_lock, flags); 1880 kfifo_reset_out(&port->write_fifo); 1881 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1882 1883 dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__); 1884 port_number = port->port_number; 1885 send_cmd(serial->dev, UMPC_CLOSE_PORT, 1886 (__u8)(UMPM_UART1_PORT + port_number), 0, NULL, 0); 1887 1888 mutex_lock(&edge_serial->es_lock); 1889 --edge_port->edge_serial->num_ports_open; 1890 if (edge_port->edge_serial->num_ports_open <= 0) { 1891 /* last port is now closed, let's shut down our interrupt urb */ 1892 usb_kill_urb(port->serial->port[0]->interrupt_in_urb); 1893 edge_port->edge_serial->num_ports_open = 0; 1894 } 1895 mutex_unlock(&edge_serial->es_lock); 1896 edge_port->close_pending = 0; 1897 } 1898 1899 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1900 const unsigned char *data, int count) 1901 { 1902 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1903 1904 if (count == 0) { 1905 dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); 1906 return 0; 1907 } 1908 1909 if (edge_port == NULL) 1910 return -ENODEV; 1911 if (edge_port->close_pending == 1) 1912 return -ENODEV; 1913 1914 count = kfifo_in_locked(&port->write_fifo, data, count, 1915 &edge_port->ep_lock); 1916 edge_send(port, tty); 1917 1918 return count; 1919 } 1920 1921 static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 1922 { 1923 int count, result; 1924 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1925 unsigned long flags; 1926 1927 spin_lock_irqsave(&edge_port->ep_lock, flags); 1928 1929 if (edge_port->ep_write_urb_in_use) { 1930 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1931 return; 1932 } 1933 1934 count = kfifo_out(&port->write_fifo, 1935 port->write_urb->transfer_buffer, 1936 port->bulk_out_size); 1937 1938 if (count == 0) { 1939 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1940 return; 1941 } 1942 1943 edge_port->ep_write_urb_in_use = 1; 1944 1945 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1946 1947 usb_serial_debug_data(&port->dev, __func__, count, port->write_urb->transfer_buffer); 1948 1949 /* set up our urb */ 1950 port->write_urb->transfer_buffer_length = count; 1951 1952 /* send the data out the bulk port */ 1953 result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 1954 if (result) { 1955 dev_err_console(port, 1956 "%s - failed submitting write urb, error %d\n", 1957 __func__, result); 1958 edge_port->ep_write_urb_in_use = 0; 1959 /* TODO: reschedule edge_send */ 1960 } else 1961 edge_port->port->icount.tx += count; 1962 1963 /* wakeup any process waiting for writes to complete */ 1964 /* there is now more room in the buffer for new writes */ 1965 if (tty) 1966 tty_wakeup(tty); 1967 } 1968 1969 static int edge_write_room(struct tty_struct *tty) 1970 { 1971 struct usb_serial_port *port = tty->driver_data; 1972 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1973 int room = 0; 1974 unsigned long flags; 1975 1976 if (edge_port == NULL) 1977 return 0; 1978 if (edge_port->close_pending == 1) 1979 return 0; 1980 1981 spin_lock_irqsave(&edge_port->ep_lock, flags); 1982 room = kfifo_avail(&port->write_fifo); 1983 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1984 1985 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 1986 return room; 1987 } 1988 1989 static int edge_chars_in_buffer(struct tty_struct *tty) 1990 { 1991 struct usb_serial_port *port = tty->driver_data; 1992 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1993 int chars = 0; 1994 unsigned long flags; 1995 if (edge_port == NULL) 1996 return 0; 1997 1998 spin_lock_irqsave(&edge_port->ep_lock, flags); 1999 chars = kfifo_len(&port->write_fifo); 2000 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2001 2002 dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); 2003 return chars; 2004 } 2005 2006 static bool edge_tx_empty(struct usb_serial_port *port) 2007 { 2008 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2009 int ret; 2010 2011 ret = tx_active(edge_port); 2012 if (ret > 0) 2013 return false; 2014 2015 return true; 2016 } 2017 2018 static void edge_throttle(struct tty_struct *tty) 2019 { 2020 struct usb_serial_port *port = tty->driver_data; 2021 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2022 int status; 2023 2024 if (edge_port == NULL) 2025 return; 2026 2027 /* if we are implementing XON/XOFF, send the stop character */ 2028 if (I_IXOFF(tty)) { 2029 unsigned char stop_char = STOP_CHAR(tty); 2030 status = edge_write(tty, port, &stop_char, 1); 2031 if (status <= 0) { 2032 dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status); 2033 } 2034 } 2035 2036 /* if we are implementing RTS/CTS, stop reads */ 2037 /* and the Edgeport will clear the RTS line */ 2038 if (C_CRTSCTS(tty)) 2039 stop_read(edge_port); 2040 2041 } 2042 2043 static void edge_unthrottle(struct tty_struct *tty) 2044 { 2045 struct usb_serial_port *port = tty->driver_data; 2046 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2047 int status; 2048 2049 if (edge_port == NULL) 2050 return; 2051 2052 /* if we are implementing XON/XOFF, send the start character */ 2053 if (I_IXOFF(tty)) { 2054 unsigned char start_char = START_CHAR(tty); 2055 status = edge_write(tty, port, &start_char, 1); 2056 if (status <= 0) { 2057 dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status); 2058 } 2059 } 2060 /* if we are implementing RTS/CTS, restart reads */ 2061 /* are the Edgeport will assert the RTS line */ 2062 if (C_CRTSCTS(tty)) { 2063 status = restart_read(edge_port); 2064 if (status) 2065 dev_err(&port->dev, 2066 "%s - read bulk usb_submit_urb failed: %d\n", 2067 __func__, status); 2068 } 2069 2070 } 2071 2072 static void stop_read(struct edgeport_port *edge_port) 2073 { 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_RUNNING) 2079 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING; 2080 edge_port->shadow_mcr &= ~MCR_RTS; 2081 2082 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2083 } 2084 2085 static int restart_read(struct edgeport_port *edge_port) 2086 { 2087 struct urb *urb; 2088 int status = 0; 2089 unsigned long flags; 2090 2091 spin_lock_irqsave(&edge_port->ep_lock, flags); 2092 2093 if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) { 2094 urb = edge_port->port->read_urb; 2095 status = usb_submit_urb(urb, GFP_ATOMIC); 2096 } 2097 edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; 2098 edge_port->shadow_mcr |= MCR_RTS; 2099 2100 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2101 2102 return status; 2103 } 2104 2105 static void change_port_settings(struct tty_struct *tty, 2106 struct edgeport_port *edge_port, struct ktermios *old_termios) 2107 { 2108 struct device *dev = &edge_port->port->dev; 2109 struct ump_uart_config *config; 2110 int baud; 2111 unsigned cflag; 2112 int status; 2113 int port_number = edge_port->port->port_number; 2114 2115 config = kmalloc (sizeof (*config), GFP_KERNEL); 2116 if (!config) { 2117 tty->termios = *old_termios; 2118 return; 2119 } 2120 2121 cflag = tty->termios.c_cflag; 2122 2123 config->wFlags = 0; 2124 2125 /* These flags must be set */ 2126 config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT; 2127 config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR; 2128 config->bUartMode = (__u8)(edge_port->bUartMode); 2129 2130 switch (cflag & CSIZE) { 2131 case CS5: 2132 config->bDataBits = UMP_UART_CHAR5BITS; 2133 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2134 break; 2135 case CS6: 2136 config->bDataBits = UMP_UART_CHAR6BITS; 2137 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2138 break; 2139 case CS7: 2140 config->bDataBits = UMP_UART_CHAR7BITS; 2141 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2142 break; 2143 default: 2144 case CS8: 2145 config->bDataBits = UMP_UART_CHAR8BITS; 2146 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2147 break; 2148 } 2149 2150 if (cflag & PARENB) { 2151 if (cflag & PARODD) { 2152 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2153 config->bParity = UMP_UART_ODDPARITY; 2154 dev_dbg(dev, "%s - parity = odd\n", __func__); 2155 } else { 2156 config->wFlags |= UMP_MASK_UART_FLAGS_PARITY; 2157 config->bParity = UMP_UART_EVENPARITY; 2158 dev_dbg(dev, "%s - parity = even\n", __func__); 2159 } 2160 } else { 2161 config->bParity = UMP_UART_NOPARITY; 2162 dev_dbg(dev, "%s - parity = none\n", __func__); 2163 } 2164 2165 if (cflag & CSTOPB) { 2166 config->bStopBits = UMP_UART_STOPBIT2; 2167 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2168 } else { 2169 config->bStopBits = UMP_UART_STOPBIT1; 2170 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2171 } 2172 2173 /* figure out the flow control settings */ 2174 if (cflag & CRTSCTS) { 2175 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW; 2176 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW; 2177 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2178 } else { 2179 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2180 tty->hw_stopped = 0; 2181 restart_read(edge_port); 2182 } 2183 2184 /* if we are implementing XON/XOFF, set the start and stop 2185 character in the device */ 2186 config->cXon = START_CHAR(tty); 2187 config->cXoff = STOP_CHAR(tty); 2188 2189 /* if we are implementing INBOUND XON/XOFF */ 2190 if (I_IXOFF(tty)) { 2191 config->wFlags |= UMP_MASK_UART_FLAGS_IN_X; 2192 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2193 __func__, config->cXon, config->cXoff); 2194 } else 2195 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2196 2197 /* if we are implementing OUTBOUND XON/XOFF */ 2198 if (I_IXON(tty)) { 2199 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X; 2200 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2201 __func__, config->cXon, config->cXoff); 2202 } else 2203 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2204 2205 tty->termios.c_cflag &= ~CMSPAR; 2206 2207 /* Round the baud rate */ 2208 baud = tty_get_baud_rate(tty); 2209 if (!baud) { 2210 /* pick a default, any default... */ 2211 baud = 9600; 2212 } else 2213 tty_encode_baud_rate(tty, baud, baud); 2214 2215 edge_port->baud_rate = baud; 2216 config->wBaudRate = (__u16)((461550L + baud/2) / baud); 2217 2218 /* FIXME: Recompute actual baud from divisor here */ 2219 2220 dev_dbg(dev, "%s - baud rate = %d, wBaudRate = %d\n", __func__, baud, config->wBaudRate); 2221 2222 dev_dbg(dev, "wBaudRate: %d\n", (int)(461550L / config->wBaudRate)); 2223 dev_dbg(dev, "wFlags: 0x%x\n", config->wFlags); 2224 dev_dbg(dev, "bDataBits: %d\n", config->bDataBits); 2225 dev_dbg(dev, "bParity: %d\n", config->bParity); 2226 dev_dbg(dev, "bStopBits: %d\n", config->bStopBits); 2227 dev_dbg(dev, "cXon: %d\n", config->cXon); 2228 dev_dbg(dev, "cXoff: %d\n", config->cXoff); 2229 dev_dbg(dev, "bUartMode: %d\n", config->bUartMode); 2230 2231 /* move the word values into big endian mode */ 2232 cpu_to_be16s(&config->wFlags); 2233 cpu_to_be16s(&config->wBaudRate); 2234 2235 status = send_cmd(edge_port->port->serial->dev, UMPC_SET_CONFIG, 2236 (__u8)(UMPM_UART1_PORT + port_number), 2237 0, (__u8 *)config, sizeof(*config)); 2238 if (status) 2239 dev_dbg(dev, "%s - error %d when trying to write config to device\n", 2240 __func__, status); 2241 kfree(config); 2242 } 2243 2244 static void edge_set_termios(struct tty_struct *tty, 2245 struct usb_serial_port *port, struct ktermios *old_termios) 2246 { 2247 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2248 unsigned int cflag; 2249 2250 cflag = tty->termios.c_cflag; 2251 2252 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, 2253 tty->termios.c_cflag, tty->termios.c_iflag); 2254 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, 2255 old_termios->c_cflag, old_termios->c_iflag); 2256 2257 if (edge_port == NULL) 2258 return; 2259 /* change the port settings to the new ones specified */ 2260 change_port_settings(tty, edge_port, old_termios); 2261 } 2262 2263 static int edge_tiocmset(struct tty_struct *tty, 2264 unsigned int set, unsigned int clear) 2265 { 2266 struct usb_serial_port *port = tty->driver_data; 2267 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2268 unsigned int mcr; 2269 unsigned long flags; 2270 2271 spin_lock_irqsave(&edge_port->ep_lock, flags); 2272 mcr = edge_port->shadow_mcr; 2273 if (set & TIOCM_RTS) 2274 mcr |= MCR_RTS; 2275 if (set & TIOCM_DTR) 2276 mcr |= MCR_DTR; 2277 if (set & TIOCM_LOOP) 2278 mcr |= MCR_LOOPBACK; 2279 2280 if (clear & TIOCM_RTS) 2281 mcr &= ~MCR_RTS; 2282 if (clear & TIOCM_DTR) 2283 mcr &= ~MCR_DTR; 2284 if (clear & TIOCM_LOOP) 2285 mcr &= ~MCR_LOOPBACK; 2286 2287 edge_port->shadow_mcr = mcr; 2288 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2289 2290 restore_mcr(edge_port, mcr); 2291 return 0; 2292 } 2293 2294 static int edge_tiocmget(struct tty_struct *tty) 2295 { 2296 struct usb_serial_port *port = tty->driver_data; 2297 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2298 unsigned int result = 0; 2299 unsigned int msr; 2300 unsigned int mcr; 2301 unsigned long flags; 2302 2303 spin_lock_irqsave(&edge_port->ep_lock, flags); 2304 2305 msr = edge_port->shadow_msr; 2306 mcr = edge_port->shadow_mcr; 2307 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 2308 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 2309 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 2310 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 2311 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 2312 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 2313 2314 2315 dev_dbg(&port->dev, "%s -- %x\n", __func__, result); 2316 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 2317 2318 return result; 2319 } 2320 2321 static int get_serial_info(struct edgeport_port *edge_port, 2322 struct serial_struct __user *retinfo) 2323 { 2324 struct serial_struct tmp; 2325 unsigned cwait; 2326 2327 if (!retinfo) 2328 return -EFAULT; 2329 2330 cwait = edge_port->port->port.closing_wait; 2331 if (cwait != ASYNC_CLOSING_WAIT_NONE) 2332 cwait = jiffies_to_msecs(cwait) / 10; 2333 2334 memset(&tmp, 0, sizeof(tmp)); 2335 2336 tmp.type = PORT_16550A; 2337 tmp.line = edge_port->port->minor; 2338 tmp.port = edge_port->port->port_number; 2339 tmp.irq = 0; 2340 tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; 2341 tmp.xmit_fifo_size = edge_port->port->bulk_out_size; 2342 tmp.baud_base = 9600; 2343 tmp.close_delay = 5*HZ; 2344 tmp.closing_wait = cwait; 2345 2346 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 2347 return -EFAULT; 2348 return 0; 2349 } 2350 2351 static int edge_ioctl(struct tty_struct *tty, 2352 unsigned int cmd, unsigned long arg) 2353 { 2354 struct usb_serial_port *port = tty->driver_data; 2355 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2356 2357 switch (cmd) { 2358 case TIOCGSERIAL: 2359 dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__); 2360 return get_serial_info(edge_port, 2361 (struct serial_struct __user *) arg); 2362 } 2363 return -ENOIOCTLCMD; 2364 } 2365 2366 static void edge_break(struct tty_struct *tty, int break_state) 2367 { 2368 struct usb_serial_port *port = tty->driver_data; 2369 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2370 int status; 2371 int bv = 0; /* Off */ 2372 2373 if (break_state == -1) 2374 bv = 1; /* On */ 2375 status = ti_do_config(edge_port, UMPC_SET_CLR_BREAK, bv); 2376 if (status) 2377 dev_dbg(&port->dev, "%s - error %d sending break set/clear command.\n", 2378 __func__, status); 2379 } 2380 2381 static int edge_startup(struct usb_serial *serial) 2382 { 2383 struct edgeport_serial *edge_serial; 2384 int status; 2385 2386 /* create our private serial structure */ 2387 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2388 if (!edge_serial) 2389 return -ENOMEM; 2390 2391 mutex_init(&edge_serial->es_lock); 2392 edge_serial->serial = serial; 2393 usb_set_serial_data(serial, edge_serial); 2394 2395 status = download_fw(edge_serial); 2396 if (status) { 2397 kfree(edge_serial); 2398 return status; 2399 } 2400 2401 return 0; 2402 } 2403 2404 static void edge_disconnect(struct usb_serial *serial) 2405 { 2406 } 2407 2408 static void edge_release(struct usb_serial *serial) 2409 { 2410 kfree(usb_get_serial_data(serial)); 2411 } 2412 2413 static int edge_port_probe(struct usb_serial_port *port) 2414 { 2415 struct edgeport_port *edge_port; 2416 int ret; 2417 2418 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2419 if (!edge_port) 2420 return -ENOMEM; 2421 2422 spin_lock_init(&edge_port->ep_lock); 2423 edge_port->port = port; 2424 edge_port->edge_serial = usb_get_serial_data(port->serial); 2425 edge_port->bUartMode = default_uart_mode; 2426 2427 switch (port->port_number) { 2428 case 0: 2429 edge_port->uart_base = UMPMEM_BASE_UART1; 2430 edge_port->dma_address = UMPD_OEDB1_ADDRESS; 2431 break; 2432 case 1: 2433 edge_port->uart_base = UMPMEM_BASE_UART2; 2434 edge_port->dma_address = UMPD_OEDB2_ADDRESS; 2435 break; 2436 default: 2437 dev_err(&port->dev, "unknown port number\n"); 2438 ret = -ENODEV; 2439 goto err; 2440 } 2441 2442 dev_dbg(&port->dev, 2443 "%s - port_number = %d, uart_base = %04x, dma_address = %04x\n", 2444 __func__, port->port_number, edge_port->uart_base, 2445 edge_port->dma_address); 2446 2447 usb_set_serial_port_data(port, edge_port); 2448 2449 ret = edge_create_sysfs_attrs(port); 2450 if (ret) 2451 goto err; 2452 2453 port->port.closing_wait = msecs_to_jiffies(closing_wait * 10); 2454 port->port.drain_delay = 1; 2455 2456 return 0; 2457 err: 2458 kfree(edge_port); 2459 2460 return ret; 2461 } 2462 2463 static int edge_port_remove(struct usb_serial_port *port) 2464 { 2465 struct edgeport_port *edge_port; 2466 2467 edge_port = usb_get_serial_port_data(port); 2468 edge_remove_sysfs_attrs(port); 2469 kfree(edge_port); 2470 2471 return 0; 2472 } 2473 2474 /* Sysfs Attributes */ 2475 2476 static ssize_t uart_mode_show(struct device *dev, 2477 struct device_attribute *attr, char *buf) 2478 { 2479 struct usb_serial_port *port = to_usb_serial_port(dev); 2480 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2481 2482 return sprintf(buf, "%d\n", edge_port->bUartMode); 2483 } 2484 2485 static ssize_t uart_mode_store(struct device *dev, 2486 struct device_attribute *attr, const char *valbuf, size_t count) 2487 { 2488 struct usb_serial_port *port = to_usb_serial_port(dev); 2489 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 2490 unsigned int v = simple_strtoul(valbuf, NULL, 0); 2491 2492 dev_dbg(dev, "%s: setting uart_mode = %d\n", __func__, v); 2493 2494 if (v < 256) 2495 edge_port->bUartMode = v; 2496 else 2497 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v); 2498 2499 return count; 2500 } 2501 static DEVICE_ATTR_RW(uart_mode); 2502 2503 static int edge_create_sysfs_attrs(struct usb_serial_port *port) 2504 { 2505 return device_create_file(&port->dev, &dev_attr_uart_mode); 2506 } 2507 2508 static int edge_remove_sysfs_attrs(struct usb_serial_port *port) 2509 { 2510 device_remove_file(&port->dev, &dev_attr_uart_mode); 2511 return 0; 2512 } 2513 2514 2515 static struct usb_serial_driver edgeport_1port_device = { 2516 .driver = { 2517 .owner = THIS_MODULE, 2518 .name = "edgeport_ti_1", 2519 }, 2520 .description = "Edgeport TI 1 port adapter", 2521 .id_table = edgeport_1port_id_table, 2522 .num_ports = 1, 2523 .open = edge_open, 2524 .close = edge_close, 2525 .throttle = edge_throttle, 2526 .unthrottle = edge_unthrottle, 2527 .attach = edge_startup, 2528 .disconnect = edge_disconnect, 2529 .release = edge_release, 2530 .port_probe = edge_port_probe, 2531 .port_remove = edge_port_remove, 2532 .ioctl = edge_ioctl, 2533 .set_termios = edge_set_termios, 2534 .tiocmget = edge_tiocmget, 2535 .tiocmset = edge_tiocmset, 2536 .tiocmiwait = usb_serial_generic_tiocmiwait, 2537 .get_icount = usb_serial_generic_get_icount, 2538 .write = edge_write, 2539 .write_room = edge_write_room, 2540 .chars_in_buffer = edge_chars_in_buffer, 2541 .tx_empty = edge_tx_empty, 2542 .break_ctl = edge_break, 2543 .read_int_callback = edge_interrupt_callback, 2544 .read_bulk_callback = edge_bulk_in_callback, 2545 .write_bulk_callback = edge_bulk_out_callback, 2546 }; 2547 2548 static struct usb_serial_driver edgeport_2port_device = { 2549 .driver = { 2550 .owner = THIS_MODULE, 2551 .name = "edgeport_ti_2", 2552 }, 2553 .description = "Edgeport TI 2 port adapter", 2554 .id_table = edgeport_2port_id_table, 2555 .num_ports = 2, 2556 .open = edge_open, 2557 .close = edge_close, 2558 .throttle = edge_throttle, 2559 .unthrottle = edge_unthrottle, 2560 .attach = edge_startup, 2561 .disconnect = edge_disconnect, 2562 .release = edge_release, 2563 .port_probe = edge_port_probe, 2564 .port_remove = edge_port_remove, 2565 .ioctl = edge_ioctl, 2566 .set_termios = edge_set_termios, 2567 .tiocmget = edge_tiocmget, 2568 .tiocmset = edge_tiocmset, 2569 .tiocmiwait = usb_serial_generic_tiocmiwait, 2570 .get_icount = usb_serial_generic_get_icount, 2571 .write = edge_write, 2572 .write_room = edge_write_room, 2573 .chars_in_buffer = edge_chars_in_buffer, 2574 .tx_empty = edge_tx_empty, 2575 .break_ctl = edge_break, 2576 .read_int_callback = edge_interrupt_callback, 2577 .read_bulk_callback = edge_bulk_in_callback, 2578 .write_bulk_callback = edge_bulk_out_callback, 2579 }; 2580 2581 static struct usb_serial_driver * const serial_drivers[] = { 2582 &edgeport_1port_device, &edgeport_2port_device, NULL 2583 }; 2584 2585 module_usb_serial_driver(serial_drivers, id_table_combined); 2586 2587 MODULE_AUTHOR(DRIVER_AUTHOR); 2588 MODULE_DESCRIPTION(DRIVER_DESC); 2589 MODULE_LICENSE("GPL"); 2590 MODULE_FIRMWARE("edgeport/down3.bin"); 2591 2592 module_param(closing_wait, int, S_IRUGO | S_IWUSR); 2593 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs"); 2594 2595 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR); 2596 MODULE_PARM_DESC(ignore_cpu_rev, 2597 "Ignore the cpu revision when connecting to a device"); 2598 2599 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR); 2600 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ..."); 2601