1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Edgeport USB Serial Converter driver 4 * 5 * Copyright (C) 2000 Inside Out Networks, All rights reserved. 6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 7 * 8 * Supports the following devices: 9 * Edgeport/4 10 * Edgeport/4t 11 * Edgeport/2 12 * Edgeport/4i 13 * Edgeport/2i 14 * Edgeport/421 15 * Edgeport/21 16 * Rapidport/4 17 * Edgeport/8 18 * Edgeport/2D8 19 * Edgeport/4D8 20 * Edgeport/8i 21 * 22 * For questions or problems with this driver, contact Inside Out 23 * Networks technical support, or Peter Berger <pberger@brimson.com>, 24 * or Al Borchers <alborchers@steinerpoint.com>. 25 * 26 */ 27 28#include <linux/kernel.h> 29#include <linux/jiffies.h> 30#include <linux/errno.h> 31#include <linux/slab.h> 32#include <linux/tty.h> 33#include <linux/tty_driver.h> 34#include <linux/tty_flip.h> 35#include <linux/module.h> 36#include <linux/spinlock.h> 37#include <linux/serial.h> 38#include <linux/ioctl.h> 39#include <linux/wait.h> 40#include <linux/firmware.h> 41#include <linux/ihex.h> 42#include <linux/uaccess.h> 43#include <linux/usb.h> 44#include <linux/usb/serial.h> 45#include "io_edgeport.h" 46#include "io_ionsp.h" /* info for the iosp messages */ 47#include "io_16654.h" /* 16654 UART defines */ 48 49#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 50#define DRIVER_DESC "Edgeport USB Serial Driver" 51 52#define MAX_NAME_LEN 64 53 54#define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ 55 56static const struct usb_device_id edgeport_2port_id_table[] = { 57 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 58 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 59 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 60 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 62 { } 63}; 64 65static const struct usb_device_id edgeport_4port_id_table[] = { 66 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 67 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 68 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 69 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 76 { } 77}; 78 79static const struct usb_device_id edgeport_8port_id_table[] = { 80 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 86 { } 87}; 88 89static const struct usb_device_id Epic_port_id_table[] = { 90 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 95 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 98 { } 99}; 100 101/* Devices that this driver supports */ 102static const struct usb_device_id id_table_combined[] = { 103 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 124 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 125 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 129 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 130 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 132 { } /* Terminating entry */ 133}; 134 135MODULE_DEVICE_TABLE(usb, id_table_combined); 136 137 138/* receive port state */ 139enum RXSTATE { 140 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 141 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 142 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 143 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 144}; 145 146 147/* Transmit Fifo 148 * This Transmit queue is an extension of the edgeport Rx buffer. 149 * The maximum amount of data buffered in both the edgeport 150 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 151 */ 152struct TxFifo { 153 unsigned int head; /* index to head pointer (write) */ 154 unsigned int tail; /* index to tail pointer (read) */ 155 unsigned int count; /* Bytes in queue */ 156 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 157 unsigned char *fifo; /* allocated Buffer */ 158}; 159 160/* This structure holds all of the local port information */ 161struct edgeport_port { 162 __u16 txCredits; /* our current credits for this port */ 163 __u16 maxTxCredits; /* the max size of the port */ 164 165 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 166 struct urb *write_urb; /* write URB for this port */ 167 bool write_in_progress; /* 'true' while a write URB is outstanding */ 168 spinlock_t ep_lock; 169 170 __u8 shadowLCR; /* last LCR value received */ 171 __u8 shadowMCR; /* last MCR value received */ 172 __u8 shadowMSR; /* last MSR value received */ 173 __u8 shadowLSR; /* last LSR value received */ 174 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 175 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 176 __u8 validDataMask; 177 __u32 baudRate; 178 179 bool open; 180 bool openPending; 181 bool commandPending; 182 bool closePending; 183 bool chaseResponsePending; 184 185 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 186 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 187 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 188 189 struct usb_serial_port *port; /* loop back to the owner of this object */ 190}; 191 192 193/* This structure holds all of the individual device information */ 194struct edgeport_serial { 195 char name[MAX_NAME_LEN+2]; /* string name of this device */ 196 197 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 198 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 199 struct edgeport_product_info product_info; /* Product Info */ 200 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 201 int is_epic; /* flag if EPiC device or not */ 202 203 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 204 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 205 struct urb *interrupt_read_urb; /* our interrupt urb */ 206 207 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 208 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 209 struct urb *read_urb; /* our bulk read urb */ 210 bool read_in_progress; 211 spinlock_t es_lock; 212 213 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 214 215 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 216 217 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 218 __u8 rxHeader1; /* receive header byte 1 */ 219 __u8 rxHeader2; /* receive header byte 2 */ 220 __u8 rxHeader3; /* receive header byte 3 */ 221 __u8 rxPort; /* the port that we are currently receiving data for */ 222 __u8 rxStatusCode; /* the receive status code */ 223 __u8 rxStatusParam; /* the receive status parameter */ 224 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 225 struct usb_serial *serial; /* loop back to the owner of this object */ 226}; 227 228/* baud rate information */ 229struct divisor_table_entry { 230 __u32 BaudRate; 231 __u16 Divisor; 232}; 233 234/* 235 * Define table of divisors for Rev A EdgePort/4 hardware 236 * These assume a 3.6864MHz crystal, the standard /16, and 237 * MCR.7 = 0. 238 */ 239 240static const struct divisor_table_entry divisor_table[] = { 241 { 50, 4608}, 242 { 75, 3072}, 243 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 244 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 245 { 150, 1536}, 246 { 300, 768}, 247 { 600, 384}, 248 { 1200, 192}, 249 { 1800, 128}, 250 { 2400, 96}, 251 { 4800, 48}, 252 { 7200, 32}, 253 { 9600, 24}, 254 { 14400, 16}, 255 { 19200, 12}, 256 { 38400, 6}, 257 { 57600, 4}, 258 { 115200, 2}, 259 { 230400, 1}, 260}; 261 262/* Number of outstanding Command Write Urbs */ 263static atomic_t CmdUrbs = ATOMIC_INIT(0); 264 265 266/* function prototypes */ 267 268static void edge_close(struct usb_serial_port *port); 269 270static void process_rcvd_data(struct edgeport_serial *edge_serial, 271 unsigned char *buffer, __u16 bufferLength); 272static void process_rcvd_status(struct edgeport_serial *edge_serial, 273 __u8 byte2, __u8 byte3); 274static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 275 int length); 276static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 277static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 278 __u8 lsr, __u8 data); 279static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 280 __u8 param); 281static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 282static void change_port_settings(struct tty_struct *tty, 283 struct edgeport_port *edge_port, 284 const struct ktermios *old_termios); 285static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 286 __u8 regNum, __u8 regValue); 287static int write_cmd_usb(struct edgeport_port *edge_port, 288 unsigned char *buffer, int writeLength); 289static void send_more_port_data(struct edgeport_serial *edge_serial, 290 struct edgeport_port *edge_port); 291 292static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 293 __u16 length, const __u8 *data); 294 295/* ************************************************************************ */ 296/* ************************************************************************ */ 297/* ************************************************************************ */ 298/* ************************************************************************ */ 299 300/************************************************************************ 301 * * 302 * update_edgeport_E2PROM() Compare current versions of * 303 * Boot ROM and Manufacture * 304 * Descriptors with versions * 305 * embedded in this driver * 306 * * 307 ************************************************************************/ 308static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 309{ 310 struct device *dev = &edge_serial->serial->dev->dev; 311 __u32 BootCurVer; 312 __u32 BootNewVer; 313 __u8 BootMajorVersion; 314 __u8 BootMinorVersion; 315 __u16 BootBuildNumber; 316 __u32 Bootaddr; 317 const struct ihex_binrec *rec; 318 const struct firmware *fw; 319 const char *fw_name; 320 int response; 321 322 switch (edge_serial->product_info.iDownloadFile) { 323 case EDGE_DOWNLOAD_FILE_I930: 324 fw_name = "edgeport/boot.fw"; 325 break; 326 case EDGE_DOWNLOAD_FILE_80251: 327 fw_name = "edgeport/boot2.fw"; 328 break; 329 default: 330 return; 331 } 332 333 response = request_ihex_firmware(&fw, fw_name, 334 &edge_serial->serial->dev->dev); 335 if (response) { 336 dev_err(dev, "Failed to load image \"%s\" err %d\n", 337 fw_name, response); 338 return; 339 } 340 341 rec = (const struct ihex_binrec *)fw->data; 342 BootMajorVersion = rec->data[0]; 343 BootMinorVersion = rec->data[1]; 344 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 345 346 /* Check Boot Image Version */ 347 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 348 (edge_serial->boot_descriptor.MinorVersion << 16) + 349 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 350 351 BootNewVer = (BootMajorVersion << 24) + 352 (BootMinorVersion << 16) + 353 BootBuildNumber; 354 355 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 356 edge_serial->boot_descriptor.MajorVersion, 357 edge_serial->boot_descriptor.MinorVersion, 358 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 359 360 361 if (BootNewVer > BootCurVer) { 362 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 363 edge_serial->boot_descriptor.MajorVersion, 364 edge_serial->boot_descriptor.MinorVersion, 365 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 366 BootMajorVersion, BootMinorVersion, BootBuildNumber); 367 368 dev_dbg(dev, "Downloading new Boot Image\n"); 369 370 for (rec = ihex_next_binrec(rec); rec; 371 rec = ihex_next_binrec(rec)) { 372 Bootaddr = be32_to_cpu(rec->addr); 373 response = rom_write(edge_serial->serial, 374 Bootaddr >> 16, 375 Bootaddr & 0xFFFF, 376 be16_to_cpu(rec->len), 377 &rec->data[0]); 378 if (response < 0) { 379 dev_err(&edge_serial->serial->dev->dev, 380 "rom_write failed (%x, %x, %d)\n", 381 Bootaddr >> 16, Bootaddr & 0xFFFF, 382 be16_to_cpu(rec->len)); 383 break; 384 } 385 } 386 } else { 387 dev_dbg(dev, "Boot Image -- already up to date\n"); 388 } 389 release_firmware(fw); 390} 391 392static void dump_product_info(struct edgeport_serial *edge_serial, 393 struct edgeport_product_info *product_info) 394{ 395 struct device *dev = &edge_serial->serial->dev->dev; 396 397 /* Dump Product Info structure */ 398 dev_dbg(dev, "**Product Information:\n"); 399 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 400 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 401 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 402 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 403 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 404 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 405 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 406 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 407 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 408 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 409 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 410 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 411 product_info->BootMajorVersion, 412 product_info->BootMinorVersion, 413 le16_to_cpu(product_info->BootBuildNumber)); 414 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 415 product_info->FirmwareMajorVersion, 416 product_info->FirmwareMinorVersion, 417 le16_to_cpu(product_info->FirmwareBuildNumber)); 418 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 419 product_info->ManufactureDescDate[0], 420 product_info->ManufactureDescDate[1], 421 product_info->ManufactureDescDate[2]+1900); 422 dev_dbg(dev, " iDownloadFile 0x%x\n", 423 product_info->iDownloadFile); 424 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 425} 426 427static void get_product_info(struct edgeport_serial *edge_serial) 428{ 429 struct edgeport_product_info *product_info = &edge_serial->product_info; 430 431 memset(product_info, 0, sizeof(struct edgeport_product_info)); 432 433 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 434 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 435 product_info->ProdInfoVer = 0; 436 437 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 438 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 439 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 440 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 441 442 product_info->BootMajorVersion = 443 edge_serial->boot_descriptor.MajorVersion; 444 product_info->BootMinorVersion = 445 edge_serial->boot_descriptor.MinorVersion; 446 product_info->BootBuildNumber = 447 edge_serial->boot_descriptor.BuildNumber; 448 449 memcpy(product_info->ManufactureDescDate, 450 edge_serial->manuf_descriptor.DescDate, 451 sizeof(edge_serial->manuf_descriptor.DescDate)); 452 453 /* check if this is 2nd generation hardware */ 454 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 455 & ION_DEVICE_ID_80251_NETCHIP) 456 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 457 else 458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 459 460 /* Determine Product type and set appropriate flags */ 461 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 462 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 463 case ION_DEVICE_ID_EDGEPORT_4T: 464 case ION_DEVICE_ID_EDGEPORT_4: 465 case ION_DEVICE_ID_EDGEPORT_2: 466 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 467 case ION_DEVICE_ID_EDGEPORT_8: 468 case ION_DEVICE_ID_EDGEPORT_421: 469 case ION_DEVICE_ID_EDGEPORT_21: 470 case ION_DEVICE_ID_EDGEPORT_2_DIN: 471 case ION_DEVICE_ID_EDGEPORT_4_DIN: 472 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 473 product_info->IsRS232 = 1; 474 break; 475 476 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 477 product_info->IsRS422 = 1; 478 product_info->IsRS485 = 1; 479 break; 480 481 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 482 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 483 product_info->IsRS422 = 1; 484 break; 485 } 486 487 dump_product_info(edge_serial, product_info); 488} 489 490static int get_epic_descriptor(struct edgeport_serial *ep) 491{ 492 int result; 493 struct usb_serial *serial = ep->serial; 494 struct edgeport_product_info *product_info = &ep->product_info; 495 struct edge_compatibility_descriptor *epic; 496 struct edge_compatibility_bits *bits; 497 struct device *dev = &serial->dev->dev; 498 499 ep->is_epic = 0; 500 501 epic = kmalloc(sizeof(*epic), GFP_KERNEL); 502 if (!epic) 503 return -ENOMEM; 504 505 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 506 USB_REQUEST_ION_GET_EPIC_DESC, 507 0xC0, 0x00, 0x00, 508 epic, sizeof(*epic), 509 300); 510 if (result == sizeof(*epic)) { 511 ep->is_epic = 1; 512 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 513 memset(product_info, 0, sizeof(struct edgeport_product_info)); 514 515 product_info->NumPorts = epic->NumPorts; 516 product_info->ProdInfoVer = 0; 517 product_info->FirmwareMajorVersion = epic->MajorVersion; 518 product_info->FirmwareMinorVersion = epic->MinorVersion; 519 product_info->FirmwareBuildNumber = epic->BuildNumber; 520 product_info->iDownloadFile = epic->iDownloadFile; 521 product_info->EpicVer = epic->EpicVer; 522 product_info->Epic = epic->Supports; 523 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 524 dump_product_info(ep, product_info); 525 526 bits = &ep->epic_descriptor.Supports; 527 dev_dbg(dev, "**EPIC descriptor:\n"); 528 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 529 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 530 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 531 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 532 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 533 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 534 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 535 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 536 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 537 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 538 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 539 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 540 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 541 542 result = 0; 543 } else if (result >= 0) { 544 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 545 result); 546 result = -EIO; 547 } 548 549 kfree(epic); 550 551 return result; 552} 553 554 555/************************************************************************/ 556/************************************************************************/ 557/* U S B C A L L B A C K F U N C T I O N S */ 558/* U S B C A L L B A C K F U N C T I O N S */ 559/************************************************************************/ 560/************************************************************************/ 561 562/***************************************************************************** 563 * edge_interrupt_callback 564 * this is the callback function for when we have received data on the 565 * interrupt endpoint. 566 *****************************************************************************/ 567static void edge_interrupt_callback(struct urb *urb) 568{ 569 struct edgeport_serial *edge_serial = urb->context; 570 struct device *dev; 571 struct edgeport_port *edge_port; 572 struct usb_serial_port *port; 573 unsigned char *data = urb->transfer_buffer; 574 int length = urb->actual_length; 575 unsigned long flags; 576 int bytes_avail; 577 int position; 578 int txCredits; 579 int portNumber; 580 int result; 581 int status = urb->status; 582 583 switch (status) { 584 case 0: 585 /* success */ 586 break; 587 case -ECONNRESET: 588 case -ENOENT: 589 case -ESHUTDOWN: 590 /* this urb is terminated, clean up */ 591 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 592 return; 593 default: 594 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 595 goto exit; 596 } 597 598 dev = &edge_serial->serial->dev->dev; 599 600 /* process this interrupt-read even if there are no ports open */ 601 if (length) { 602 usb_serial_debug_data(dev, __func__, length, data); 603 604 if (length > 1) { 605 bytes_avail = data[0] | (data[1] << 8); 606 if (bytes_avail) { 607 spin_lock_irqsave(&edge_serial->es_lock, flags); 608 edge_serial->rxBytesAvail += bytes_avail; 609 dev_dbg(dev, 610 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 611 __func__, bytes_avail, 612 edge_serial->rxBytesAvail, 613 edge_serial->read_in_progress); 614 615 if (edge_serial->rxBytesAvail > 0 && 616 !edge_serial->read_in_progress) { 617 dev_dbg(dev, "%s - posting a read\n", __func__); 618 edge_serial->read_in_progress = true; 619 620 /* we have pending bytes on the 621 bulk in pipe, send a request */ 622 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 623 if (result) { 624 dev_err(dev, 625 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 626 __func__, result); 627 edge_serial->read_in_progress = false; 628 } 629 } 630 spin_unlock_irqrestore(&edge_serial->es_lock, 631 flags); 632 } 633 } 634 /* grab the txcredits for the ports if available */ 635 position = 2; 636 portNumber = 0; 637 while ((position < length - 1) && 638 (portNumber < edge_serial->serial->num_ports)) { 639 txCredits = data[position] | (data[position+1] << 8); 640 if (txCredits) { 641 port = edge_serial->serial->port[portNumber]; 642 edge_port = usb_get_serial_port_data(port); 643 if (edge_port && edge_port->open) { 644 spin_lock_irqsave(&edge_port->ep_lock, 645 flags); 646 edge_port->txCredits += txCredits; 647 spin_unlock_irqrestore(&edge_port->ep_lock, 648 flags); 649 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 650 __func__, portNumber, 651 edge_port->txCredits); 652 653 /* tell the tty driver that something 654 has changed */ 655 tty_port_tty_wakeup(&edge_port->port->port); 656 /* Since we have more credit, check 657 if more data can be sent */ 658 send_more_port_data(edge_serial, 659 edge_port); 660 } 661 } 662 position += 2; 663 ++portNumber; 664 } 665 } 666 667exit: 668 result = usb_submit_urb(urb, GFP_ATOMIC); 669 if (result) 670 dev_err(&urb->dev->dev, 671 "%s - Error %d submitting control urb\n", 672 __func__, result); 673} 674 675 676/***************************************************************************** 677 * edge_bulk_in_callback 678 * this is the callback function for when we have received data on the 679 * bulk in endpoint. 680 *****************************************************************************/ 681static void edge_bulk_in_callback(struct urb *urb) 682{ 683 struct edgeport_serial *edge_serial = urb->context; 684 struct device *dev; 685 unsigned char *data = urb->transfer_buffer; 686 int retval; 687 __u16 raw_data_length; 688 int status = urb->status; 689 unsigned long flags; 690 691 if (status) { 692 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 693 __func__, status); 694 edge_serial->read_in_progress = false; 695 return; 696 } 697 698 if (urb->actual_length == 0) { 699 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 700 edge_serial->read_in_progress = false; 701 return; 702 } 703 704 dev = &edge_serial->serial->dev->dev; 705 raw_data_length = urb->actual_length; 706 707 usb_serial_debug_data(dev, __func__, raw_data_length, data); 708 709 spin_lock_irqsave(&edge_serial->es_lock, flags); 710 711 /* decrement our rxBytes available by the number that we just got */ 712 edge_serial->rxBytesAvail -= raw_data_length; 713 714 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 715 raw_data_length, edge_serial->rxBytesAvail); 716 717 process_rcvd_data(edge_serial, data, urb->actual_length); 718 719 /* check to see if there's any more data for us to read */ 720 if (edge_serial->rxBytesAvail > 0) { 721 dev_dbg(dev, "%s - posting a read\n", __func__); 722 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 723 if (retval) { 724 dev_err(dev, 725 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 726 __func__, retval); 727 edge_serial->read_in_progress = false; 728 } 729 } else { 730 edge_serial->read_in_progress = false; 731 } 732 733 spin_unlock_irqrestore(&edge_serial->es_lock, flags); 734} 735 736 737/***************************************************************************** 738 * edge_bulk_out_data_callback 739 * this is the callback function for when we have finished sending 740 * serial data on the bulk out endpoint. 741 *****************************************************************************/ 742static void edge_bulk_out_data_callback(struct urb *urb) 743{ 744 struct edgeport_port *edge_port = urb->context; 745 int status = urb->status; 746 747 if (status) { 748 dev_dbg(&urb->dev->dev, 749 "%s - nonzero write bulk status received: %d\n", 750 __func__, status); 751 } 752 753 if (edge_port->open) 754 tty_port_tty_wakeup(&edge_port->port->port); 755 756 /* Release the Write URB */ 757 edge_port->write_in_progress = false; 758 759 /* Check if more data needs to be sent */ 760 send_more_port_data((struct edgeport_serial *) 761 (usb_get_serial_data(edge_port->port->serial)), edge_port); 762} 763 764 765/***************************************************************************** 766 * BulkOutCmdCallback 767 * this is the callback function for when we have finished sending a 768 * command on the bulk out endpoint. 769 *****************************************************************************/ 770static void edge_bulk_out_cmd_callback(struct urb *urb) 771{ 772 struct edgeport_port *edge_port = urb->context; 773 int status = urb->status; 774 775 atomic_dec(&CmdUrbs); 776 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", 777 __func__, urb, atomic_read(&CmdUrbs)); 778 779 780 /* clean up the transfer buffer */ 781 kfree(urb->transfer_buffer); 782 783 /* Free the command urb */ 784 usb_free_urb(urb); 785 786 if (status) { 787 dev_dbg(&urb->dev->dev, 788 "%s - nonzero write bulk status received: %d\n", 789 __func__, status); 790 return; 791 } 792 793 /* tell the tty driver that something has changed */ 794 if (edge_port->open) 795 tty_port_tty_wakeup(&edge_port->port->port); 796 797 /* we have completed the command */ 798 edge_port->commandPending = false; 799 wake_up(&edge_port->wait_command); 800} 801 802 803/***************************************************************************** 804 * Driver tty interface functions 805 *****************************************************************************/ 806 807/***************************************************************************** 808 * SerialOpen 809 * this function is called by the tty driver when a port is opened 810 * If successful, we return 0 811 * Otherwise we return a negative error number. 812 *****************************************************************************/ 813static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 814{ 815 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 816 struct device *dev = &port->dev; 817 struct usb_serial *serial; 818 struct edgeport_serial *edge_serial; 819 int response; 820 821 if (edge_port == NULL) 822 return -ENODEV; 823 824 /* see if we've set up our endpoint info yet (can't set it up 825 in edge_startup as the structures were not set up at that time.) */ 826 serial = port->serial; 827 edge_serial = usb_get_serial_data(serial); 828 if (edge_serial == NULL) 829 return -ENODEV; 830 if (edge_serial->interrupt_in_buffer == NULL) { 831 struct usb_serial_port *port0 = serial->port[0]; 832 833 /* not set up yet, so do it now */ 834 edge_serial->interrupt_in_buffer = 835 port0->interrupt_in_buffer; 836 edge_serial->interrupt_in_endpoint = 837 port0->interrupt_in_endpointAddress; 838 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 839 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 840 edge_serial->bulk_in_endpoint = 841 port0->bulk_in_endpointAddress; 842 edge_serial->read_urb = port0->read_urb; 843 edge_serial->bulk_out_endpoint = 844 port0->bulk_out_endpointAddress; 845 846 /* set up our interrupt urb */ 847 usb_fill_int_urb(edge_serial->interrupt_read_urb, 848 serial->dev, 849 usb_rcvintpipe(serial->dev, 850 port0->interrupt_in_endpointAddress), 851 port0->interrupt_in_buffer, 852 edge_serial->interrupt_read_urb->transfer_buffer_length, 853 edge_interrupt_callback, edge_serial, 854 edge_serial->interrupt_read_urb->interval); 855 856 /* set up our bulk in urb */ 857 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 858 usb_rcvbulkpipe(serial->dev, 859 port0->bulk_in_endpointAddress), 860 port0->bulk_in_buffer, 861 edge_serial->read_urb->transfer_buffer_length, 862 edge_bulk_in_callback, edge_serial); 863 edge_serial->read_in_progress = false; 864 865 /* start interrupt read for this edgeport 866 * this interrupt will continue as long 867 * as the edgeport is connected */ 868 response = usb_submit_urb(edge_serial->interrupt_read_urb, 869 GFP_KERNEL); 870 if (response) { 871 dev_err(dev, "%s - Error %d submitting control urb\n", 872 __func__, response); 873 } 874 } 875 876 /* initialize our wait queues */ 877 init_waitqueue_head(&edge_port->wait_open); 878 init_waitqueue_head(&edge_port->wait_chase); 879 init_waitqueue_head(&edge_port->wait_command); 880 881 /* initialize our port settings */ 882 edge_port->txCredits = 0; /* Can't send any data yet */ 883 /* Must always set this bit to enable ints! */ 884 edge_port->shadowMCR = MCR_MASTER_IE; 885 edge_port->chaseResponsePending = false; 886 887 /* send a open port command */ 888 edge_port->openPending = true; 889 edge_port->open = false; 890 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 891 892 if (response < 0) { 893 dev_err(dev, "%s - error sending open port command\n", __func__); 894 edge_port->openPending = false; 895 return -ENODEV; 896 } 897 898 /* now wait for the port to be completely opened */ 899 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 900 OPEN_TIMEOUT); 901 902 if (!edge_port->open) { 903 /* open timed out */ 904 dev_dbg(dev, "%s - open timeout\n", __func__); 905 edge_port->openPending = false; 906 return -ENODEV; 907 } 908 909 /* create the txfifo */ 910 edge_port->txfifo.head = 0; 911 edge_port->txfifo.tail = 0; 912 edge_port->txfifo.count = 0; 913 edge_port->txfifo.size = edge_port->maxTxCredits; 914 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 915 916 if (!edge_port->txfifo.fifo) { 917 edge_close(port); 918 return -ENOMEM; 919 } 920 921 /* Allocate a URB for the write */ 922 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 923 edge_port->write_in_progress = false; 924 925 if (!edge_port->write_urb) { 926 edge_close(port); 927 return -ENOMEM; 928 } 929 930 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 931 __func__, edge_port->maxTxCredits); 932 933 return 0; 934} 935 936 937/************************************************************************ 938 * 939 * block_until_chase_response 940 * 941 * This function will block the close until one of the following: 942 * 1. Response to our Chase comes from Edgeport 943 * 2. A timeout of 10 seconds without activity has expired 944 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 945 * 946 ************************************************************************/ 947static void block_until_chase_response(struct edgeport_port *edge_port) 948{ 949 struct device *dev = &edge_port->port->dev; 950 DEFINE_WAIT(wait); 951 __u16 lastCredits; 952 int timeout = 1*HZ; 953 int loop = 10; 954 955 while (1) { 956 /* Save Last credits */ 957 lastCredits = edge_port->txCredits; 958 959 /* Did we get our Chase response */ 960 if (!edge_port->chaseResponsePending) { 961 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 962 963 /* did we get all of our credit back? */ 964 if (edge_port->txCredits == edge_port->maxTxCredits) { 965 dev_dbg(dev, "%s - Got all credits\n", __func__); 966 return; 967 } 968 } 969 970 /* Block the thread for a while */ 971 prepare_to_wait(&edge_port->wait_chase, &wait, 972 TASK_UNINTERRUPTIBLE); 973 schedule_timeout(timeout); 974 finish_wait(&edge_port->wait_chase, &wait); 975 976 if (lastCredits == edge_port->txCredits) { 977 /* No activity.. count down. */ 978 loop--; 979 if (loop == 0) { 980 edge_port->chaseResponsePending = false; 981 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 982 return; 983 } 984 } else { 985 /* Reset timeout value back to 10 seconds */ 986 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 987 lastCredits, edge_port->txCredits); 988 loop = 10; 989 } 990 } 991} 992 993 994/************************************************************************ 995 * 996 * block_until_tx_empty 997 * 998 * This function will block the close until one of the following: 999 * 1. TX count are 0 1000 * 2. The edgeport has stopped 1001 * 3. A timeout of 3 seconds without activity has expired 1002 * 1003 ************************************************************************/ 1004static void block_until_tx_empty(struct edgeport_port *edge_port) 1005{ 1006 struct device *dev = &edge_port->port->dev; 1007 DEFINE_WAIT(wait); 1008 struct TxFifo *fifo = &edge_port->txfifo; 1009 __u32 lastCount; 1010 int timeout = HZ/10; 1011 int loop = 30; 1012 1013 while (1) { 1014 /* Save Last count */ 1015 lastCount = fifo->count; 1016 1017 /* Is the Edgeport Buffer empty? */ 1018 if (lastCount == 0) { 1019 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1020 return; 1021 } 1022 1023 /* Block the thread for a while */ 1024 prepare_to_wait(&edge_port->wait_chase, &wait, 1025 TASK_UNINTERRUPTIBLE); 1026 schedule_timeout(timeout); 1027 finish_wait(&edge_port->wait_chase, &wait); 1028 1029 dev_dbg(dev, "%s wait\n", __func__); 1030 1031 if (lastCount == fifo->count) { 1032 /* No activity.. count down. */ 1033 loop--; 1034 if (loop == 0) { 1035 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1036 return; 1037 } 1038 } else { 1039 /* Reset timeout value back to seconds */ 1040 loop = 30; 1041 } 1042 } 1043} 1044 1045 1046/***************************************************************************** 1047 * edge_close 1048 * this function is called by the tty driver when a port is closed 1049 *****************************************************************************/ 1050static void edge_close(struct usb_serial_port *port) 1051{ 1052 struct edgeport_serial *edge_serial; 1053 struct edgeport_port *edge_port; 1054 int status; 1055 1056 edge_serial = usb_get_serial_data(port->serial); 1057 edge_port = usb_get_serial_port_data(port); 1058 if (edge_serial == NULL || edge_port == NULL) 1059 return; 1060 1061 /* block until tx is empty */ 1062 block_until_tx_empty(edge_port); 1063 1064 edge_port->closePending = true; 1065 1066 if (!edge_serial->is_epic || 1067 edge_serial->epic_descriptor.Supports.IOSPChase) { 1068 /* flush and chase */ 1069 edge_port->chaseResponsePending = true; 1070 1071 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1072 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1073 if (status == 0) 1074 /* block until chase finished */ 1075 block_until_chase_response(edge_port); 1076 else 1077 edge_port->chaseResponsePending = false; 1078 } 1079 1080 if (!edge_serial->is_epic || 1081 edge_serial->epic_descriptor.Supports.IOSPClose) { 1082 /* close the port */ 1083 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1084 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1085 } 1086 1087 /* port->close = true; */ 1088 edge_port->closePending = false; 1089 edge_port->open = false; 1090 edge_port->openPending = false; 1091 1092 usb_kill_urb(edge_port->write_urb); 1093 1094 if (edge_port->write_urb) { 1095 /* if this urb had a transfer buffer already 1096 (old transfer) free it */ 1097 kfree(edge_port->write_urb->transfer_buffer); 1098 usb_free_urb(edge_port->write_urb); 1099 edge_port->write_urb = NULL; 1100 } 1101 kfree(edge_port->txfifo.fifo); 1102 edge_port->txfifo.fifo = NULL; 1103} 1104 1105/***************************************************************************** 1106 * SerialWrite 1107 * this function is called by the tty driver when data should be written 1108 * to the port. 1109 * If successful, we return the number of bytes written, otherwise we 1110 * return a negative error number. 1111 *****************************************************************************/ 1112static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1113 const unsigned char *data, int count) 1114{ 1115 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1116 struct TxFifo *fifo; 1117 int copySize; 1118 int bytesleft; 1119 int firsthalf; 1120 int secondhalf; 1121 unsigned long flags; 1122 1123 if (edge_port == NULL) 1124 return -ENODEV; 1125 1126 /* get a pointer to the Tx fifo */ 1127 fifo = &edge_port->txfifo; 1128 1129 spin_lock_irqsave(&edge_port->ep_lock, flags); 1130 1131 /* calculate number of bytes to put in fifo */ 1132 copySize = min((unsigned int)count, 1133 (edge_port->txCredits - fifo->count)); 1134 1135 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1136 __func__, count, edge_port->txCredits - fifo->count, copySize); 1137 1138 /* catch writes of 0 bytes which the tty driver likes to give us, 1139 and when txCredits is empty */ 1140 if (copySize == 0) { 1141 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1142 goto finish_write; 1143 } 1144 1145 /* queue the data 1146 * since we can never overflow the buffer we do not have to check for a 1147 * full condition 1148 * 1149 * the copy is done is two parts -- first fill to the end of the buffer 1150 * then copy the reset from the start of the buffer 1151 */ 1152 bytesleft = fifo->size - fifo->head; 1153 firsthalf = min(bytesleft, copySize); 1154 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1155 firsthalf, bytesleft); 1156 1157 /* now copy our data */ 1158 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1159 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1160 1161 /* update the index and size */ 1162 fifo->head += firsthalf; 1163 fifo->count += firsthalf; 1164 1165 /* wrap the index */ 1166 if (fifo->head == fifo->size) 1167 fifo->head = 0; 1168 1169 secondhalf = copySize-firsthalf; 1170 1171 if (secondhalf) { 1172 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1173 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1174 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1175 /* update the index and size */ 1176 fifo->count += secondhalf; 1177 fifo->head += secondhalf; 1178 /* No need to check for wrap since we can not get to end of 1179 * the fifo in this part 1180 */ 1181 } 1182 1183finish_write: 1184 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1185 1186 send_more_port_data((struct edgeport_serial *) 1187 usb_get_serial_data(port->serial), edge_port); 1188 1189 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1190 __func__, copySize, edge_port->txCredits, fifo->count); 1191 1192 return copySize; 1193} 1194 1195 1196/************************************************************************ 1197 * 1198 * send_more_port_data() 1199 * 1200 * This routine attempts to write additional UART transmit data 1201 * to a port over the USB bulk pipe. It is called (1) when new 1202 * data has been written to a port's TxBuffer from higher layers 1203 * (2) when the peripheral sends us additional TxCredits indicating 1204 * that it can accept more Tx data for a given port; and (3) when 1205 * a bulk write completes successfully and we want to see if we 1206 * can transmit more. 1207 * 1208 ************************************************************************/ 1209static void send_more_port_data(struct edgeport_serial *edge_serial, 1210 struct edgeport_port *edge_port) 1211{ 1212 struct TxFifo *fifo = &edge_port->txfifo; 1213 struct device *dev = &edge_port->port->dev; 1214 struct urb *urb; 1215 unsigned char *buffer; 1216 int status; 1217 int count; 1218 int bytesleft; 1219 int firsthalf; 1220 int secondhalf; 1221 unsigned long flags; 1222 1223 spin_lock_irqsave(&edge_port->ep_lock, flags); 1224 1225 if (edge_port->write_in_progress || 1226 !edge_port->open || 1227 (fifo->count == 0)) { 1228 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1229 __func__, fifo->count, edge_port->write_in_progress); 1230 goto exit_send; 1231 } 1232 1233 /* since the amount of data in the fifo will always fit into the 1234 * edgeport buffer we do not need to check the write length 1235 * 1236 * Do we have enough credits for this port to make it worthwhile 1237 * to bother queueing a write. If it's too small, say a few bytes, 1238 * it's better to wait for more credits so we can do a larger write. 1239 */ 1240 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1241 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1242 __func__, fifo->count, edge_port->txCredits); 1243 goto exit_send; 1244 } 1245 1246 /* lock this write */ 1247 edge_port->write_in_progress = true; 1248 1249 /* get a pointer to the write_urb */ 1250 urb = edge_port->write_urb; 1251 1252 /* make sure transfer buffer is freed */ 1253 kfree(urb->transfer_buffer); 1254 urb->transfer_buffer = NULL; 1255 1256 /* build the data header for the buffer and port that we are about 1257 to send out */ 1258 count = fifo->count; 1259 buffer = kmalloc(count+2, GFP_ATOMIC); 1260 if (!buffer) { 1261 edge_port->write_in_progress = false; 1262 goto exit_send; 1263 } 1264 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1265 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1266 1267 /* now copy our data */ 1268 bytesleft = fifo->size - fifo->tail; 1269 firsthalf = min(bytesleft, count); 1270 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1271 fifo->tail += firsthalf; 1272 fifo->count -= firsthalf; 1273 if (fifo->tail == fifo->size) 1274 fifo->tail = 0; 1275 1276 secondhalf = count-firsthalf; 1277 if (secondhalf) { 1278 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1279 secondhalf); 1280 fifo->tail += secondhalf; 1281 fifo->count -= secondhalf; 1282 } 1283 1284 if (count) 1285 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1286 1287 /* fill up the urb with all of our data and submit it */ 1288 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1289 usb_sndbulkpipe(edge_serial->serial->dev, 1290 edge_serial->bulk_out_endpoint), 1291 buffer, count+2, 1292 edge_bulk_out_data_callback, edge_port); 1293 1294 /* decrement the number of credits we have by the number we just sent */ 1295 edge_port->txCredits -= count; 1296 edge_port->port->icount.tx += count; 1297 1298 status = usb_submit_urb(urb, GFP_ATOMIC); 1299 if (status) { 1300 /* something went wrong */ 1301 dev_err_console(edge_port->port, 1302 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1303 __func__, status); 1304 edge_port->write_in_progress = false; 1305 1306 /* revert the credits as something bad happened. */ 1307 edge_port->txCredits += count; 1308 edge_port->port->icount.tx -= count; 1309 } 1310 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1311 __func__, count, edge_port->txCredits, fifo->count); 1312 1313exit_send: 1314 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1315} 1316 1317 1318/***************************************************************************** 1319 * edge_write_room 1320 * this function is called by the tty driver when it wants to know how 1321 * many bytes of data we can accept for a specific port. 1322 *****************************************************************************/ 1323static unsigned int edge_write_room(struct tty_struct *tty) 1324{ 1325 struct usb_serial_port *port = tty->driver_data; 1326 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1327 unsigned int room; 1328 unsigned long flags; 1329 1330 /* total of both buffers is still txCredit */ 1331 spin_lock_irqsave(&edge_port->ep_lock, flags); 1332 room = edge_port->txCredits - edge_port->txfifo.count; 1333 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1334 1335 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 1336 return room; 1337} 1338 1339 1340/***************************************************************************** 1341 * edge_chars_in_buffer 1342 * this function is called by the tty driver when it wants to know how 1343 * many bytes of data we currently have outstanding in the port (data that 1344 * has been written, but hasn't made it out the port yet) 1345 *****************************************************************************/ 1346static unsigned int edge_chars_in_buffer(struct tty_struct *tty) 1347{ 1348 struct usb_serial_port *port = tty->driver_data; 1349 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1350 unsigned int num_chars; 1351 unsigned long flags; 1352 1353 spin_lock_irqsave(&edge_port->ep_lock, flags); 1354 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1355 edge_port->txfifo.count; 1356 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1357 if (num_chars) { 1358 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars); 1359 } 1360 1361 return num_chars; 1362} 1363 1364 1365/***************************************************************************** 1366 * SerialThrottle 1367 * this function is called by the tty driver when it wants to stop the data 1368 * being read from the port. 1369 *****************************************************************************/ 1370static void edge_throttle(struct tty_struct *tty) 1371{ 1372 struct usb_serial_port *port = tty->driver_data; 1373 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1374 int status; 1375 1376 if (edge_port == NULL) 1377 return; 1378 1379 if (!edge_port->open) { 1380 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1381 return; 1382 } 1383 1384 /* if we are implementing XON/XOFF, send the stop character */ 1385 if (I_IXOFF(tty)) { 1386 unsigned char stop_char = STOP_CHAR(tty); 1387 status = edge_write(tty, port, &stop_char, 1); 1388 if (status <= 0) 1389 return; 1390 } 1391 1392 /* if we are implementing RTS/CTS, toggle that line */ 1393 if (C_CRTSCTS(tty)) { 1394 edge_port->shadowMCR &= ~MCR_RTS; 1395 status = send_cmd_write_uart_register(edge_port, MCR, 1396 edge_port->shadowMCR); 1397 if (status != 0) 1398 return; 1399 } 1400} 1401 1402 1403/***************************************************************************** 1404 * edge_unthrottle 1405 * this function is called by the tty driver when it wants to resume the 1406 * data being read from the port (called after SerialThrottle is called) 1407 *****************************************************************************/ 1408static void edge_unthrottle(struct tty_struct *tty) 1409{ 1410 struct usb_serial_port *port = tty->driver_data; 1411 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1412 int status; 1413 1414 if (edge_port == NULL) 1415 return; 1416 1417 if (!edge_port->open) { 1418 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1419 return; 1420 } 1421 1422 /* if we are implementing XON/XOFF, send the start character */ 1423 if (I_IXOFF(tty)) { 1424 unsigned char start_char = START_CHAR(tty); 1425 status = edge_write(tty, port, &start_char, 1); 1426 if (status <= 0) 1427 return; 1428 } 1429 /* if we are implementing RTS/CTS, toggle that line */ 1430 if (C_CRTSCTS(tty)) { 1431 edge_port->shadowMCR |= MCR_RTS; 1432 send_cmd_write_uart_register(edge_port, MCR, 1433 edge_port->shadowMCR); 1434 } 1435} 1436 1437 1438/***************************************************************************** 1439 * SerialSetTermios 1440 * this function is called by the tty driver when it wants to change 1441 * the termios structure 1442 *****************************************************************************/ 1443static void edge_set_termios(struct tty_struct *tty, 1444 struct usb_serial_port *port, 1445 const struct ktermios *old_termios) 1446{ 1447 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1448 1449 if (edge_port == NULL) 1450 return; 1451 1452 if (!edge_port->open) { 1453 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1454 return; 1455 } 1456 1457 /* change the port settings to the new ones specified */ 1458 change_port_settings(tty, edge_port, old_termios); 1459} 1460 1461 1462/***************************************************************************** 1463 * get_lsr_info - get line status register info 1464 * 1465 * Purpose: Let user call ioctl() to get info when the UART physically 1466 * is emptied. On bus types like RS485, the transmitter must 1467 * release the bus after transmitting. This must be done when 1468 * the transmit shift register is empty, not be done when the 1469 * transmit holding register is empty. This functionality 1470 * allows an RS485 driver to be written in user space. 1471 *****************************************************************************/ 1472static int get_lsr_info(struct edgeport_port *edge_port, 1473 unsigned int __user *value) 1474{ 1475 unsigned int result = 0; 1476 unsigned long flags; 1477 1478 spin_lock_irqsave(&edge_port->ep_lock, flags); 1479 if (edge_port->maxTxCredits == edge_port->txCredits && 1480 edge_port->txfifo.count == 0) { 1481 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1482 result = TIOCSER_TEMT; 1483 } 1484 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1485 1486 if (copy_to_user(value, &result, sizeof(int))) 1487 return -EFAULT; 1488 return 0; 1489} 1490 1491static int edge_tiocmset(struct tty_struct *tty, 1492 unsigned int set, unsigned int clear) 1493{ 1494 struct usb_serial_port *port = tty->driver_data; 1495 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1496 unsigned int mcr; 1497 1498 mcr = edge_port->shadowMCR; 1499 if (set & TIOCM_RTS) 1500 mcr |= MCR_RTS; 1501 if (set & TIOCM_DTR) 1502 mcr |= MCR_DTR; 1503 if (set & TIOCM_LOOP) 1504 mcr |= MCR_LOOPBACK; 1505 1506 if (clear & TIOCM_RTS) 1507 mcr &= ~MCR_RTS; 1508 if (clear & TIOCM_DTR) 1509 mcr &= ~MCR_DTR; 1510 if (clear & TIOCM_LOOP) 1511 mcr &= ~MCR_LOOPBACK; 1512 1513 edge_port->shadowMCR = mcr; 1514 1515 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1516 1517 return 0; 1518} 1519 1520static int edge_tiocmget(struct tty_struct *tty) 1521{ 1522 struct usb_serial_port *port = tty->driver_data; 1523 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1524 unsigned int result = 0; 1525 unsigned int msr; 1526 unsigned int mcr; 1527 1528 msr = edge_port->shadowMSR; 1529 mcr = edge_port->shadowMCR; 1530 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1531 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1532 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1533 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1534 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1535 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1536 1537 return result; 1538} 1539 1540/***************************************************************************** 1541 * SerialIoctl 1542 * this function handles any ioctl calls to the driver 1543 *****************************************************************************/ 1544static int edge_ioctl(struct tty_struct *tty, 1545 unsigned int cmd, unsigned long arg) 1546{ 1547 struct usb_serial_port *port = tty->driver_data; 1548 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1549 1550 switch (cmd) { 1551 case TIOCSERGETLSR: 1552 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1553 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1554 } 1555 return -ENOIOCTLCMD; 1556} 1557 1558 1559/***************************************************************************** 1560 * SerialBreak 1561 * this function sends a break to the port 1562 *****************************************************************************/ 1563static int edge_break(struct tty_struct *tty, int break_state) 1564{ 1565 struct usb_serial_port *port = tty->driver_data; 1566 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1567 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1568 int status = 0; 1569 1570 if (!edge_serial->is_epic || 1571 edge_serial->epic_descriptor.Supports.IOSPChase) { 1572 /* flush and chase */ 1573 edge_port->chaseResponsePending = true; 1574 1575 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1576 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1577 if (status == 0) { 1578 /* block until chase finished */ 1579 block_until_chase_response(edge_port); 1580 } else { 1581 edge_port->chaseResponsePending = false; 1582 } 1583 } 1584 1585 if (!edge_serial->is_epic || 1586 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1587 if (break_state == -1) { 1588 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1589 status = send_iosp_ext_cmd(edge_port, 1590 IOSP_CMD_SET_BREAK, 0); 1591 } else { 1592 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1593 status = send_iosp_ext_cmd(edge_port, 1594 IOSP_CMD_CLEAR_BREAK, 0); 1595 } 1596 if (status) 1597 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1598 __func__); 1599 } 1600 1601 return status; 1602} 1603 1604 1605/***************************************************************************** 1606 * process_rcvd_data 1607 * this function handles the data received on the bulk in pipe. 1608 *****************************************************************************/ 1609static void process_rcvd_data(struct edgeport_serial *edge_serial, 1610 unsigned char *buffer, __u16 bufferLength) 1611{ 1612 struct usb_serial *serial = edge_serial->serial; 1613 struct device *dev = &serial->dev->dev; 1614 struct usb_serial_port *port; 1615 struct edgeport_port *edge_port; 1616 __u16 lastBufferLength; 1617 __u16 rxLen; 1618 1619 lastBufferLength = bufferLength + 1; 1620 1621 while (bufferLength > 0) { 1622 /* failsafe incase we get a message that we don't understand */ 1623 if (lastBufferLength == bufferLength) { 1624 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1625 break; 1626 } 1627 lastBufferLength = bufferLength; 1628 1629 switch (edge_serial->rxState) { 1630 case EXPECT_HDR1: 1631 edge_serial->rxHeader1 = *buffer; 1632 ++buffer; 1633 --bufferLength; 1634 1635 if (bufferLength == 0) { 1636 edge_serial->rxState = EXPECT_HDR2; 1637 break; 1638 } 1639 fallthrough; 1640 case EXPECT_HDR2: 1641 edge_serial->rxHeader2 = *buffer; 1642 ++buffer; 1643 --bufferLength; 1644 1645 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1646 edge_serial->rxHeader1, edge_serial->rxHeader2); 1647 /* Process depending on whether this header is 1648 * data or status */ 1649 1650 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1651 /* Decode this status header and go to 1652 * EXPECT_HDR1 (if we can process the status 1653 * with only 2 bytes), or go to EXPECT_HDR3 to 1654 * get the third byte. */ 1655 edge_serial->rxPort = 1656 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1657 edge_serial->rxStatusCode = 1658 IOSP_GET_STATUS_CODE( 1659 edge_serial->rxHeader1); 1660 1661 if (!IOSP_STATUS_IS_2BYTE( 1662 edge_serial->rxStatusCode)) { 1663 /* This status needs additional bytes. 1664 * Save what we have and then wait for 1665 * more data. 1666 */ 1667 edge_serial->rxStatusParam 1668 = edge_serial->rxHeader2; 1669 edge_serial->rxState = EXPECT_HDR3; 1670 break; 1671 } 1672 /* We have all the header bytes, process the 1673 status now */ 1674 process_rcvd_status(edge_serial, 1675 edge_serial->rxHeader2, 0); 1676 edge_serial->rxState = EXPECT_HDR1; 1677 break; 1678 } 1679 1680 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1681 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, 1682 edge_serial->rxHeader2); 1683 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, 1684 edge_serial->rxPort, 1685 edge_serial->rxBytesRemaining); 1686 1687 if (bufferLength == 0) { 1688 edge_serial->rxState = EXPECT_DATA; 1689 break; 1690 } 1691 fallthrough; 1692 case EXPECT_DATA: /* Expect data */ 1693 if (bufferLength < edge_serial->rxBytesRemaining) { 1694 rxLen = bufferLength; 1695 /* Expect data to start next buffer */ 1696 edge_serial->rxState = EXPECT_DATA; 1697 } else { 1698 /* BufLen >= RxBytesRemaining */ 1699 rxLen = edge_serial->rxBytesRemaining; 1700 /* Start another header next time */ 1701 edge_serial->rxState = EXPECT_HDR1; 1702 } 1703 1704 bufferLength -= rxLen; 1705 edge_serial->rxBytesRemaining -= rxLen; 1706 1707 /* spit this data back into the tty driver if this 1708 port is open */ 1709 if (rxLen && edge_serial->rxPort < serial->num_ports) { 1710 port = serial->port[edge_serial->rxPort]; 1711 edge_port = usb_get_serial_port_data(port); 1712 if (edge_port && edge_port->open) { 1713 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1714 __func__, rxLen, 1715 edge_serial->rxPort); 1716 edge_tty_recv(edge_port->port, buffer, 1717 rxLen); 1718 edge_port->port->icount.rx += rxLen; 1719 } 1720 } 1721 buffer += rxLen; 1722 break; 1723 1724 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1725 edge_serial->rxHeader3 = *buffer; 1726 ++buffer; 1727 --bufferLength; 1728 1729 /* We have all the header bytes, process the 1730 status now */ 1731 process_rcvd_status(edge_serial, 1732 edge_serial->rxStatusParam, 1733 edge_serial->rxHeader3); 1734 edge_serial->rxState = EXPECT_HDR1; 1735 break; 1736 } 1737 } 1738} 1739 1740 1741/***************************************************************************** 1742 * process_rcvd_status 1743 * this function handles the any status messages received on the 1744 * bulk in pipe. 1745 *****************************************************************************/ 1746static void process_rcvd_status(struct edgeport_serial *edge_serial, 1747 __u8 byte2, __u8 byte3) 1748{ 1749 struct usb_serial_port *port; 1750 struct edgeport_port *edge_port; 1751 struct tty_struct *tty; 1752 struct device *dev; 1753 __u8 code = edge_serial->rxStatusCode; 1754 1755 /* switch the port pointer to the one being currently talked about */ 1756 if (edge_serial->rxPort >= edge_serial->serial->num_ports) 1757 return; 1758 port = edge_serial->serial->port[edge_serial->rxPort]; 1759 edge_port = usb_get_serial_port_data(port); 1760 if (edge_port == NULL) { 1761 dev_err(&edge_serial->serial->dev->dev, 1762 "%s - edge_port == NULL for port %d\n", 1763 __func__, edge_serial->rxPort); 1764 return; 1765 } 1766 dev = &port->dev; 1767 1768 if (code == IOSP_EXT_STATUS) { 1769 switch (byte2) { 1770 case IOSP_EXT_STATUS_CHASE_RSP: 1771 /* we want to do EXT status regardless of port 1772 * open/closed */ 1773 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1774 __func__, edge_serial->rxPort, byte3); 1775 /* Currently, the only EXT_STATUS is Chase, so process 1776 * here instead of one more call to one more subroutine 1777 * If/when more EXT_STATUS, there'll be more work to do 1778 * Also, we currently clear flag and close the port 1779 * regardless of content of above's Byte3. 1780 * We could choose to do something else when Byte3 says 1781 * Timeout on Chase from Edgeport, like wait longer in 1782 * block_until_chase_response, but for now we don't. 1783 */ 1784 edge_port->chaseResponsePending = false; 1785 wake_up(&edge_port->wait_chase); 1786 return; 1787 1788 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1789 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1790 __func__, edge_serial->rxPort, byte3); 1791 /* Port->RxCheckRsp = true; */ 1792 return; 1793 } 1794 } 1795 1796 if (code == IOSP_STATUS_OPEN_RSP) { 1797 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1798 edge_port->maxTxCredits = edge_port->txCredits; 1799 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1800 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1801 handle_new_msr(edge_port, byte2); 1802 1803 /* send the current line settings to the port so we are 1804 in sync with any further termios calls */ 1805 tty = tty_port_tty_get(&edge_port->port->port); 1806 if (tty) { 1807 change_port_settings(tty, 1808 edge_port, &tty->termios); 1809 tty_kref_put(tty); 1810 } 1811 1812 /* we have completed the open */ 1813 edge_port->openPending = false; 1814 edge_port->open = true; 1815 wake_up(&edge_port->wait_open); 1816 return; 1817 } 1818 1819 /* If port is closed, silently discard all rcvd status. We can 1820 * have cases where buffered status is received AFTER the close 1821 * port command is sent to the Edgeport. 1822 */ 1823 if (!edge_port->open || edge_port->closePending) 1824 return; 1825 1826 switch (code) { 1827 /* Not currently sent by Edgeport */ 1828 case IOSP_STATUS_LSR: 1829 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1830 __func__, edge_serial->rxPort, byte2); 1831 handle_new_lsr(edge_port, false, byte2, 0); 1832 break; 1833 1834 case IOSP_STATUS_LSR_DATA: 1835 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1836 __func__, edge_serial->rxPort, byte2, byte3); 1837 /* byte2 is LSR Register */ 1838 /* byte3 is broken data byte */ 1839 handle_new_lsr(edge_port, true, byte2, byte3); 1840 break; 1841 /* 1842 * case IOSP_EXT_4_STATUS: 1843 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1844 * __func__, edge_serial->rxPort, byte2, byte3); 1845 * break; 1846 */ 1847 case IOSP_STATUS_MSR: 1848 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1849 __func__, edge_serial->rxPort, byte2); 1850 /* 1851 * Process this new modem status and generate appropriate 1852 * events, etc, based on the new status. This routine 1853 * also saves the MSR in Port->ShadowMsr. 1854 */ 1855 handle_new_msr(edge_port, byte2); 1856 break; 1857 1858 default: 1859 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1860 break; 1861 } 1862} 1863 1864 1865/***************************************************************************** 1866 * edge_tty_recv 1867 * this function passes data on to the tty flip buffer 1868 *****************************************************************************/ 1869static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1870 int length) 1871{ 1872 int cnt; 1873 1874 cnt = tty_insert_flip_string(&port->port, data, length); 1875 if (cnt < length) { 1876 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1877 __func__, length - cnt); 1878 } 1879 data += cnt; 1880 length -= cnt; 1881 1882 tty_flip_buffer_push(&port->port); 1883} 1884 1885 1886/***************************************************************************** 1887 * handle_new_msr 1888 * this function handles any change to the msr register for a port. 1889 *****************************************************************************/ 1890static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 1891{ 1892 struct async_icount *icount; 1893 1894 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1895 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1896 icount = &edge_port->port->icount; 1897 1898 /* update input line counters */ 1899 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 1900 icount->cts++; 1901 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 1902 icount->dsr++; 1903 if (newMsr & EDGEPORT_MSR_DELTA_CD) 1904 icount->dcd++; 1905 if (newMsr & EDGEPORT_MSR_DELTA_RI) 1906 icount->rng++; 1907 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1908 } 1909 1910 /* Save the new modem status */ 1911 edge_port->shadowMSR = newMsr & 0xf0; 1912} 1913 1914 1915/***************************************************************************** 1916 * handle_new_lsr 1917 * this function handles any change to the lsr register for a port. 1918 *****************************************************************************/ 1919static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 1920 __u8 lsr, __u8 data) 1921{ 1922 __u8 newLsr = (__u8) (lsr & (__u8) 1923 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 1924 struct async_icount *icount; 1925 1926 edge_port->shadowLSR = lsr; 1927 1928 if (newLsr & LSR_BREAK) { 1929 /* 1930 * Parity and Framing errors only count if they 1931 * occur exclusive of a break being 1932 * received. 1933 */ 1934 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1935 } 1936 1937 /* Place LSR data byte into Rx buffer */ 1938 if (lsrData) 1939 edge_tty_recv(edge_port->port, &data, 1); 1940 1941 /* update input line counters */ 1942 icount = &edge_port->port->icount; 1943 if (newLsr & LSR_BREAK) 1944 icount->brk++; 1945 if (newLsr & LSR_OVER_ERR) 1946 icount->overrun++; 1947 if (newLsr & LSR_PAR_ERR) 1948 icount->parity++; 1949 if (newLsr & LSR_FRM_ERR) 1950 icount->frame++; 1951} 1952 1953 1954/**************************************************************************** 1955 * sram_write 1956 * writes a number of bytes to the Edgeport device's sram starting at the 1957 * given address. 1958 * If successful returns the number of bytes written, otherwise it returns 1959 * a negative error number of the problem. 1960 ****************************************************************************/ 1961static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 1962 __u16 length, const __u8 *data) 1963{ 1964 int result; 1965 __u16 current_length; 1966 unsigned char *transfer_buffer; 1967 1968 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 1969 1970 transfer_buffer = kmalloc(64, GFP_KERNEL); 1971 if (!transfer_buffer) 1972 return -ENOMEM; 1973 1974 /* need to split these writes up into 64 byte chunks */ 1975 result = 0; 1976 while (length > 0) { 1977 if (length > 64) 1978 current_length = 64; 1979 else 1980 current_length = length; 1981 1982/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 1983 memcpy(transfer_buffer, data, current_length); 1984 result = usb_control_msg(serial->dev, 1985 usb_sndctrlpipe(serial->dev, 0), 1986 USB_REQUEST_ION_WRITE_RAM, 1987 0x40, addr, extAddr, transfer_buffer, 1988 current_length, 300); 1989 if (result < 0) 1990 break; 1991 length -= current_length; 1992 addr += current_length; 1993 data += current_length; 1994 } 1995 1996 kfree(transfer_buffer); 1997 return result; 1998} 1999 2000 2001/**************************************************************************** 2002 * rom_write 2003 * writes a number of bytes to the Edgeport device's ROM starting at the 2004 * given address. 2005 * If successful returns the number of bytes written, otherwise it returns 2006 * a negative error number of the problem. 2007 ****************************************************************************/ 2008static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2009 __u16 length, const __u8 *data) 2010{ 2011 int result; 2012 __u16 current_length; 2013 unsigned char *transfer_buffer; 2014 2015 transfer_buffer = kmalloc(64, GFP_KERNEL); 2016 if (!transfer_buffer) 2017 return -ENOMEM; 2018 2019 /* need to split these writes up into 64 byte chunks */ 2020 result = 0; 2021 while (length > 0) { 2022 if (length > 64) 2023 current_length = 64; 2024 else 2025 current_length = length; 2026 memcpy(transfer_buffer, data, current_length); 2027 result = usb_control_msg(serial->dev, 2028 usb_sndctrlpipe(serial->dev, 0), 2029 USB_REQUEST_ION_WRITE_ROM, 0x40, 2030 addr, extAddr, 2031 transfer_buffer, current_length, 300); 2032 if (result < 0) 2033 break; 2034 length -= current_length; 2035 addr += current_length; 2036 data += current_length; 2037 } 2038 2039 kfree(transfer_buffer); 2040 return result; 2041} 2042 2043 2044/**************************************************************************** 2045 * rom_read 2046 * reads a number of bytes from the Edgeport device starting at the given 2047 * address. 2048 * Returns zero on success or a negative error number. 2049 ****************************************************************************/ 2050static int rom_read(struct usb_serial *serial, __u16 extAddr, 2051 __u16 addr, __u16 length, __u8 *data) 2052{ 2053 int result; 2054 __u16 current_length; 2055 unsigned char *transfer_buffer; 2056 2057 transfer_buffer = kmalloc(64, GFP_KERNEL); 2058 if (!transfer_buffer) 2059 return -ENOMEM; 2060 2061 /* need to split these reads up into 64 byte chunks */ 2062 result = 0; 2063 while (length > 0) { 2064 if (length > 64) 2065 current_length = 64; 2066 else 2067 current_length = length; 2068 result = usb_control_msg(serial->dev, 2069 usb_rcvctrlpipe(serial->dev, 0), 2070 USB_REQUEST_ION_READ_ROM, 2071 0xC0, addr, extAddr, transfer_buffer, 2072 current_length, 300); 2073 if (result < current_length) { 2074 if (result >= 0) 2075 result = -EIO; 2076 break; 2077 } 2078 memcpy(data, transfer_buffer, current_length); 2079 length -= current_length; 2080 addr += current_length; 2081 data += current_length; 2082 2083 result = 0; 2084 } 2085 2086 kfree(transfer_buffer); 2087 return result; 2088} 2089 2090 2091/**************************************************************************** 2092 * send_iosp_ext_cmd 2093 * Is used to send a IOSP message to the Edgeport device 2094 ****************************************************************************/ 2095static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2096 __u8 command, __u8 param) 2097{ 2098 unsigned char *buffer; 2099 unsigned char *currentCommand; 2100 int length = 0; 2101 int status = 0; 2102 2103 buffer = kmalloc(10, GFP_ATOMIC); 2104 if (!buffer) 2105 return -ENOMEM; 2106 2107 currentCommand = buffer; 2108 2109 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2110 command, param); 2111 2112 status = write_cmd_usb(edge_port, buffer, length); 2113 if (status) { 2114 /* something bad happened, let's free up the memory */ 2115 kfree(buffer); 2116 } 2117 2118 return status; 2119} 2120 2121 2122/***************************************************************************** 2123 * write_cmd_usb 2124 * this function writes the given buffer out to the bulk write endpoint. 2125 *****************************************************************************/ 2126static int write_cmd_usb(struct edgeport_port *edge_port, 2127 unsigned char *buffer, int length) 2128{ 2129 struct edgeport_serial *edge_serial = 2130 usb_get_serial_data(edge_port->port->serial); 2131 struct device *dev = &edge_port->port->dev; 2132 int status = 0; 2133 struct urb *urb; 2134 2135 usb_serial_debug_data(dev, __func__, length, buffer); 2136 2137 /* Allocate our next urb */ 2138 urb = usb_alloc_urb(0, GFP_ATOMIC); 2139 if (!urb) 2140 return -ENOMEM; 2141 2142 atomic_inc(&CmdUrbs); 2143 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2144 __func__, urb, atomic_read(&CmdUrbs)); 2145 2146 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2147 usb_sndbulkpipe(edge_serial->serial->dev, 2148 edge_serial->bulk_out_endpoint), 2149 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2150 2151 edge_port->commandPending = true; 2152 status = usb_submit_urb(urb, GFP_ATOMIC); 2153 2154 if (status) { 2155 /* something went wrong */ 2156 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2157 __func__, status); 2158 usb_free_urb(urb); 2159 atomic_dec(&CmdUrbs); 2160 return status; 2161 } 2162 2163#if 0 2164 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2165 2166 if (edge_port->commandPending) { 2167 /* command timed out */ 2168 dev_dbg(dev, "%s - command timed out\n", __func__); 2169 status = -EINVAL; 2170 } 2171#endif 2172 return status; 2173} 2174 2175 2176/***************************************************************************** 2177 * send_cmd_write_baud_rate 2178 * this function sends the proper command to change the baud rate of the 2179 * specified port. 2180 *****************************************************************************/ 2181static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2182 int baudRate) 2183{ 2184 struct edgeport_serial *edge_serial = 2185 usb_get_serial_data(edge_port->port->serial); 2186 struct device *dev = &edge_port->port->dev; 2187 unsigned char *cmdBuffer; 2188 unsigned char *currCmd; 2189 int cmdLen = 0; 2190 int divisor; 2191 int status; 2192 u32 number = edge_port->port->port_number; 2193 2194 if (edge_serial->is_epic && 2195 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2196 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2197 baudRate); 2198 return 0; 2199 } 2200 2201 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2202 2203 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2204 if (status) { 2205 dev_err(dev, "%s - bad baud rate\n", __func__); 2206 return status; 2207 } 2208 2209 /* Alloc memory for the string of commands. */ 2210 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2211 if (!cmdBuffer) 2212 return -ENOMEM; 2213 2214 currCmd = cmdBuffer; 2215 2216 /* Enable access to divisor latch */ 2217 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2218 2219 /* Write the divisor itself */ 2220 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2221 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2222 2223 /* Restore original value to disable access to divisor latch */ 2224 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2225 edge_port->shadowLCR); 2226 2227 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2228 if (status) { 2229 /* something bad happened, let's free up the memory */ 2230 kfree(cmdBuffer); 2231 } 2232 2233 return status; 2234} 2235 2236 2237/***************************************************************************** 2238 * calc_baud_rate_divisor 2239 * this function calculates the proper baud rate divisor for the specified 2240 * baud rate. 2241 *****************************************************************************/ 2242static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2243{ 2244 int i; 2245 __u16 custom; 2246 2247 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2248 if (divisor_table[i].BaudRate == baudrate) { 2249 *divisor = divisor_table[i].Divisor; 2250 return 0; 2251 } 2252 } 2253 2254 /* We have tried all of the standard baud rates 2255 * lets try to calculate the divisor for this baud rate 2256 * Make sure the baud rate is reasonable */ 2257 if (baudrate > 50 && baudrate < 230400) { 2258 /* get divisor */ 2259 custom = (__u16)((230400L + baudrate/2) / baudrate); 2260 2261 *divisor = custom; 2262 2263 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2264 return 0; 2265 } 2266 2267 return -1; 2268} 2269 2270 2271/***************************************************************************** 2272 * send_cmd_write_uart_register 2273 * this function builds up a uart register message and sends to the device. 2274 *****************************************************************************/ 2275static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2276 __u8 regNum, __u8 regValue) 2277{ 2278 struct edgeport_serial *edge_serial = 2279 usb_get_serial_data(edge_port->port->serial); 2280 struct device *dev = &edge_port->port->dev; 2281 unsigned char *cmdBuffer; 2282 unsigned char *currCmd; 2283 unsigned long cmdLen = 0; 2284 int status; 2285 2286 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2287 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2288 2289 if (edge_serial->is_epic && 2290 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2291 regNum == MCR) { 2292 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2293 return 0; 2294 } 2295 2296 if (edge_serial->is_epic && 2297 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2298 regNum == LCR) { 2299 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2300 return 0; 2301 } 2302 2303 /* Alloc memory for the string of commands. */ 2304 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2305 if (cmdBuffer == NULL) 2306 return -ENOMEM; 2307 2308 currCmd = cmdBuffer; 2309 2310 /* Build a cmd in the buffer to write the given register */ 2311 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2312 regNum, regValue); 2313 2314 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2315 if (status) { 2316 /* something bad happened, let's free up the memory */ 2317 kfree(cmdBuffer); 2318 } 2319 2320 return status; 2321} 2322 2323 2324/***************************************************************************** 2325 * change_port_settings 2326 * This routine is called to set the UART on the device to match the 2327 * specified new settings. 2328 *****************************************************************************/ 2329 2330static void change_port_settings(struct tty_struct *tty, 2331 struct edgeport_port *edge_port, const struct ktermios *old_termios) 2332{ 2333 struct device *dev = &edge_port->port->dev; 2334 struct edgeport_serial *edge_serial = 2335 usb_get_serial_data(edge_port->port->serial); 2336 int baud; 2337 unsigned cflag; 2338 __u8 mask = 0xff; 2339 __u8 lData; 2340 __u8 lParity; 2341 __u8 lStop; 2342 __u8 rxFlow; 2343 __u8 txFlow; 2344 int status; 2345 2346 if (!edge_port->open && 2347 !edge_port->openPending) { 2348 dev_dbg(dev, "%s - port not opened\n", __func__); 2349 return; 2350 } 2351 2352 cflag = tty->termios.c_cflag; 2353 2354 switch (cflag & CSIZE) { 2355 case CS5: 2356 lData = LCR_BITS_5; mask = 0x1f; 2357 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2358 break; 2359 case CS6: 2360 lData = LCR_BITS_6; mask = 0x3f; 2361 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2362 break; 2363 case CS7: 2364 lData = LCR_BITS_7; mask = 0x7f; 2365 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2366 break; 2367 default: 2368 case CS8: 2369 lData = LCR_BITS_8; 2370 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2371 break; 2372 } 2373 2374 lParity = LCR_PAR_NONE; 2375 if (cflag & PARENB) { 2376 if (cflag & CMSPAR) { 2377 if (cflag & PARODD) { 2378 lParity = LCR_PAR_MARK; 2379 dev_dbg(dev, "%s - parity = mark\n", __func__); 2380 } else { 2381 lParity = LCR_PAR_SPACE; 2382 dev_dbg(dev, "%s - parity = space\n", __func__); 2383 } 2384 } else if (cflag & PARODD) { 2385 lParity = LCR_PAR_ODD; 2386 dev_dbg(dev, "%s - parity = odd\n", __func__); 2387 } else { 2388 lParity = LCR_PAR_EVEN; 2389 dev_dbg(dev, "%s - parity = even\n", __func__); 2390 } 2391 } else { 2392 dev_dbg(dev, "%s - parity = none\n", __func__); 2393 } 2394 2395 if (cflag & CSTOPB) { 2396 lStop = LCR_STOP_2; 2397 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2398 } else { 2399 lStop = LCR_STOP_1; 2400 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2401 } 2402 2403 /* figure out the flow control settings */ 2404 rxFlow = txFlow = 0x00; 2405 if (cflag & CRTSCTS) { 2406 rxFlow |= IOSP_RX_FLOW_RTS; 2407 txFlow |= IOSP_TX_FLOW_CTS; 2408 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2409 } else { 2410 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2411 } 2412 2413 /* if we are implementing XON/XOFF, set the start and stop character 2414 in the device */ 2415 if (I_IXOFF(tty) || I_IXON(tty)) { 2416 unsigned char stop_char = STOP_CHAR(tty); 2417 unsigned char start_char = START_CHAR(tty); 2418 2419 if (!edge_serial->is_epic || 2420 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2421 send_iosp_ext_cmd(edge_port, 2422 IOSP_CMD_SET_XON_CHAR, start_char); 2423 send_iosp_ext_cmd(edge_port, 2424 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2425 } 2426 2427 /* if we are implementing INBOUND XON/XOFF */ 2428 if (I_IXOFF(tty)) { 2429 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2430 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2431 __func__, start_char, stop_char); 2432 } else { 2433 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2434 } 2435 2436 /* if we are implementing OUTBOUND XON/XOFF */ 2437 if (I_IXON(tty)) { 2438 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2439 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2440 __func__, start_char, stop_char); 2441 } else { 2442 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2443 } 2444 } 2445 2446 /* Set flow control to the configured value */ 2447 if (!edge_serial->is_epic || 2448 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2449 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2450 if (!edge_serial->is_epic || 2451 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2452 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2453 2454 2455 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2456 edge_port->shadowLCR |= (lData | lParity | lStop); 2457 2458 edge_port->validDataMask = mask; 2459 2460 /* Send the updated LCR value to the EdgePort */ 2461 status = send_cmd_write_uart_register(edge_port, LCR, 2462 edge_port->shadowLCR); 2463 if (status != 0) 2464 return; 2465 2466 /* set up the MCR register and send it to the EdgePort */ 2467 edge_port->shadowMCR = MCR_MASTER_IE; 2468 if (cflag & CBAUD) 2469 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2470 2471 status = send_cmd_write_uart_register(edge_port, MCR, 2472 edge_port->shadowMCR); 2473 if (status != 0) 2474 return; 2475 2476 /* Determine divisor based on baud rate */ 2477 baud = tty_get_baud_rate(tty); 2478 if (!baud) { 2479 /* pick a default, any default... */ 2480 baud = 9600; 2481 } 2482 2483 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2484 status = send_cmd_write_baud_rate(edge_port, baud); 2485 if (status == -1) { 2486 /* Speed change was not possible - put back the old speed */ 2487 baud = tty_termios_baud_rate(old_termios); 2488 tty_encode_baud_rate(tty, baud, baud); 2489 } 2490} 2491 2492 2493/**************************************************************************** 2494 * unicode_to_ascii 2495 * Turns a string from Unicode into ASCII. 2496 * Doesn't do a good job with any characters that are outside the normal 2497 * ASCII range, but it's only for debugging... 2498 * NOTE: expects the unicode in LE format 2499 ****************************************************************************/ 2500static void unicode_to_ascii(char *string, int buflen, 2501 __le16 *unicode, int unicode_size) 2502{ 2503 int i; 2504 2505 if (buflen <= 0) /* never happens, but... */ 2506 return; 2507 --buflen; /* space for nul */ 2508 2509 for (i = 0; i < unicode_size; i++) { 2510 if (i >= buflen) 2511 break; 2512 string[i] = (char)(le16_to_cpu(unicode[i])); 2513 } 2514 string[i] = 0x00; 2515} 2516 2517 2518/**************************************************************************** 2519 * get_manufacturing_desc 2520 * reads in the manufacturing descriptor and stores it into the serial 2521 * structure. 2522 ****************************************************************************/ 2523static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2524{ 2525 struct device *dev = &edge_serial->serial->dev->dev; 2526 int response; 2527 2528 dev_dbg(dev, "getting manufacturer descriptor\n"); 2529 2530 response = rom_read(edge_serial->serial, 2531 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2532 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2533 EDGE_MANUF_DESC_LEN, 2534 (__u8 *)(&edge_serial->manuf_descriptor)); 2535 2536 if (response < 0) { 2537 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2538 response); 2539 } else { 2540 char string[30]; 2541 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2542 dev_dbg(dev, " RomSize: %dK\n", 2543 edge_serial->manuf_descriptor.RomSize); 2544 dev_dbg(dev, " RamSize: %dK\n", 2545 edge_serial->manuf_descriptor.RamSize); 2546 dev_dbg(dev, " CpuRev: %d\n", 2547 edge_serial->manuf_descriptor.CpuRev); 2548 dev_dbg(dev, " BoardRev: %d\n", 2549 edge_serial->manuf_descriptor.BoardRev); 2550 dev_dbg(dev, " NumPorts: %d\n", 2551 edge_serial->manuf_descriptor.NumPorts); 2552 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2553 edge_serial->manuf_descriptor.DescDate[0], 2554 edge_serial->manuf_descriptor.DescDate[1], 2555 edge_serial->manuf_descriptor.DescDate[2]+1900); 2556 unicode_to_ascii(string, sizeof(string), 2557 edge_serial->manuf_descriptor.SerialNumber, 2558 edge_serial->manuf_descriptor.SerNumLength/2); 2559 dev_dbg(dev, " SerialNumber: %s\n", string); 2560 unicode_to_ascii(string, sizeof(string), 2561 edge_serial->manuf_descriptor.AssemblyNumber, 2562 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2563 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2564 unicode_to_ascii(string, sizeof(string), 2565 edge_serial->manuf_descriptor.OemAssyNumber, 2566 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2567 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2568 dev_dbg(dev, " UartType: %d\n", 2569 edge_serial->manuf_descriptor.UartType); 2570 dev_dbg(dev, " IonPid: %d\n", 2571 edge_serial->manuf_descriptor.IonPid); 2572 dev_dbg(dev, " IonConfig: %d\n", 2573 edge_serial->manuf_descriptor.IonConfig); 2574 } 2575} 2576 2577 2578/**************************************************************************** 2579 * get_boot_desc 2580 * reads in the bootloader descriptor and stores it into the serial 2581 * structure. 2582 ****************************************************************************/ 2583static void get_boot_desc(struct edgeport_serial *edge_serial) 2584{ 2585 struct device *dev = &edge_serial->serial->dev->dev; 2586 int response; 2587 2588 dev_dbg(dev, "getting boot descriptor\n"); 2589 2590 response = rom_read(edge_serial->serial, 2591 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2592 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2593 EDGE_BOOT_DESC_LEN, 2594 (__u8 *)(&edge_serial->boot_descriptor)); 2595 2596 if (response < 0) { 2597 dev_err(dev, "error in getting boot descriptor: %d\n", 2598 response); 2599 } else { 2600 dev_dbg(dev, "**Boot Descriptor:\n"); 2601 dev_dbg(dev, " BootCodeLength: %d\n", 2602 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2603 dev_dbg(dev, " MajorVersion: %d\n", 2604 edge_serial->boot_descriptor.MajorVersion); 2605 dev_dbg(dev, " MinorVersion: %d\n", 2606 edge_serial->boot_descriptor.MinorVersion); 2607 dev_dbg(dev, " BuildNumber: %d\n", 2608 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2609 dev_dbg(dev, " Capabilities: 0x%x\n", 2610 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2611 dev_dbg(dev, " UConfig0: %d\n", 2612 edge_serial->boot_descriptor.UConfig0); 2613 dev_dbg(dev, " UConfig1: %d\n", 2614 edge_serial->boot_descriptor.UConfig1); 2615 } 2616} 2617 2618 2619/**************************************************************************** 2620 * load_application_firmware 2621 * This is called to load the application firmware to the device 2622 ****************************************************************************/ 2623static void load_application_firmware(struct edgeport_serial *edge_serial) 2624{ 2625 struct device *dev = &edge_serial->serial->dev->dev; 2626 const struct ihex_binrec *rec; 2627 const struct firmware *fw; 2628 const char *fw_name; 2629 const char *fw_info; 2630 int response; 2631 __u32 Operaddr; 2632 __u16 build; 2633 2634 switch (edge_serial->product_info.iDownloadFile) { 2635 case EDGE_DOWNLOAD_FILE_I930: 2636 fw_info = "downloading firmware version (930)"; 2637 fw_name = "edgeport/down.fw"; 2638 break; 2639 2640 case EDGE_DOWNLOAD_FILE_80251: 2641 fw_info = "downloading firmware version (80251)"; 2642 fw_name = "edgeport/down2.fw"; 2643 break; 2644 2645 case EDGE_DOWNLOAD_FILE_NONE: 2646 dev_dbg(dev, "No download file specified, skipping download\n"); 2647 return; 2648 2649 default: 2650 return; 2651 } 2652 2653 response = request_ihex_firmware(&fw, fw_name, 2654 &edge_serial->serial->dev->dev); 2655 if (response) { 2656 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2657 fw_name, response); 2658 return; 2659 } 2660 2661 rec = (const struct ihex_binrec *)fw->data; 2662 build = (rec->data[2] << 8) | rec->data[3]; 2663 2664 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2665 2666 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2667 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2668 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2669 2670 for (rec = ihex_next_binrec(rec); rec; 2671 rec = ihex_next_binrec(rec)) { 2672 Operaddr = be32_to_cpu(rec->addr); 2673 response = sram_write(edge_serial->serial, 2674 Operaddr >> 16, 2675 Operaddr & 0xFFFF, 2676 be16_to_cpu(rec->len), 2677 &rec->data[0]); 2678 if (response < 0) { 2679 dev_err(&edge_serial->serial->dev->dev, 2680 "sram_write failed (%x, %x, %d)\n", 2681 Operaddr >> 16, Operaddr & 0xFFFF, 2682 be16_to_cpu(rec->len)); 2683 break; 2684 } 2685 } 2686 2687 dev_dbg(dev, "sending exec_dl_code\n"); 2688 response = usb_control_msg (edge_serial->serial->dev, 2689 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2690 USB_REQUEST_ION_EXEC_DL_CODE, 2691 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2692 2693 release_firmware(fw); 2694} 2695 2696 2697/**************************************************************************** 2698 * edge_startup 2699 ****************************************************************************/ 2700static int edge_startup(struct usb_serial *serial) 2701{ 2702 struct edgeport_serial *edge_serial; 2703 struct usb_device *dev; 2704 struct device *ddev = &serial->dev->dev; 2705 int i; 2706 int response; 2707 bool interrupt_in_found; 2708 bool bulk_in_found; 2709 bool bulk_out_found; 2710 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2711 EDGE_COMPATIBILITY_MASK1, 2712 EDGE_COMPATIBILITY_MASK2 }; 2713 2714 dev = serial->dev; 2715 2716 /* create our private serial structure */ 2717 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2718 if (!edge_serial) 2719 return -ENOMEM; 2720 2721 spin_lock_init(&edge_serial->es_lock); 2722 edge_serial->serial = serial; 2723 usb_set_serial_data(serial, edge_serial); 2724 2725 /* get the name for the device from the device */ 2726 i = usb_string(dev, dev->descriptor.iManufacturer, 2727 &edge_serial->name[0], MAX_NAME_LEN+1); 2728 if (i < 0) 2729 i = 0; 2730 edge_serial->name[i++] = ' '; 2731 usb_string(dev, dev->descriptor.iProduct, 2732 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2733 2734 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2735 2736 /* Read the epic descriptor */ 2737 if (get_epic_descriptor(edge_serial) < 0) { 2738 /* memcpy descriptor to Supports structures */ 2739 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2740 sizeof(struct edge_compatibility_bits)); 2741 2742 /* get the manufacturing descriptor for this device */ 2743 get_manufacturing_desc(edge_serial); 2744 2745 /* get the boot descriptor */ 2746 get_boot_desc(edge_serial); 2747 2748 get_product_info(edge_serial); 2749 } 2750 2751 /* set the number of ports from the manufacturing description */ 2752 /* serial->num_ports = serial->product_info.NumPorts; */ 2753 if ((!edge_serial->is_epic) && 2754 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2755 dev_warn(ddev, 2756 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2757 edge_serial->product_info.NumPorts, 2758 serial->num_ports); 2759 } 2760 2761 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2762 2763 /* If not an EPiC device */ 2764 if (!edge_serial->is_epic) { 2765 /* now load the application firmware into this device */ 2766 load_application_firmware(edge_serial); 2767 2768 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2769 2770 /* Check current Edgeport EEPROM and update if necessary */ 2771 update_edgeport_E2PROM(edge_serial); 2772 2773 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2774 2775 /* set the configuration to use #1 */ 2776/* dev_dbg(ddev, "set_configuration 1\n"); */ 2777/* usb_set_configuration (dev, 1); */ 2778 } 2779 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2780 edge_serial->product_info.FirmwareMajorVersion, 2781 edge_serial->product_info.FirmwareMinorVersion, 2782 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2783 2784 /* we set up the pointers to the endpoints in the edge_open function, 2785 * as the structures aren't created yet. */ 2786 2787 response = 0; 2788 2789 if (edge_serial->is_epic) { 2790 struct usb_host_interface *alt; 2791 2792 alt = serial->interface->cur_altsetting; 2793 2794 /* EPIC thing, set up our interrupt polling now and our read 2795 * urb, so that the device knows it really is connected. */ 2796 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2797 for (i = 0; i < alt->desc.bNumEndpoints; ++i) { 2798 struct usb_endpoint_descriptor *endpoint; 2799 int buffer_size; 2800 2801 endpoint = &alt->endpoint[i].desc; 2802 buffer_size = usb_endpoint_maxp(endpoint); 2803 if (!interrupt_in_found && 2804 (usb_endpoint_is_int_in(endpoint))) { 2805 /* we found a interrupt in endpoint */ 2806 dev_dbg(ddev, "found interrupt in\n"); 2807 2808 /* not set up yet, so do it now */ 2809 edge_serial->interrupt_read_urb = 2810 usb_alloc_urb(0, GFP_KERNEL); 2811 if (!edge_serial->interrupt_read_urb) { 2812 response = -ENOMEM; 2813 break; 2814 } 2815 2816 edge_serial->interrupt_in_buffer = 2817 kmalloc(buffer_size, GFP_KERNEL); 2818 if (!edge_serial->interrupt_in_buffer) { 2819 response = -ENOMEM; 2820 break; 2821 } 2822 edge_serial->interrupt_in_endpoint = 2823 endpoint->bEndpointAddress; 2824 2825 /* set up our interrupt urb */ 2826 usb_fill_int_urb( 2827 edge_serial->interrupt_read_urb, 2828 dev, 2829 usb_rcvintpipe(dev, 2830 endpoint->bEndpointAddress), 2831 edge_serial->interrupt_in_buffer, 2832 buffer_size, 2833 edge_interrupt_callback, 2834 edge_serial, 2835 endpoint->bInterval); 2836 2837 interrupt_in_found = true; 2838 } 2839 2840 if (!bulk_in_found && 2841 (usb_endpoint_is_bulk_in(endpoint))) { 2842 /* we found a bulk in endpoint */ 2843 dev_dbg(ddev, "found bulk in\n"); 2844 2845 /* not set up yet, so do it now */ 2846 edge_serial->read_urb = 2847 usb_alloc_urb(0, GFP_KERNEL); 2848 if (!edge_serial->read_urb) { 2849 response = -ENOMEM; 2850 break; 2851 } 2852 2853 edge_serial->bulk_in_buffer = 2854 kmalloc(buffer_size, GFP_KERNEL); 2855 if (!edge_serial->bulk_in_buffer) { 2856 response = -ENOMEM; 2857 break; 2858 } 2859 edge_serial->bulk_in_endpoint = 2860 endpoint->bEndpointAddress; 2861 2862 /* set up our bulk in urb */ 2863 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2864 usb_rcvbulkpipe(dev, 2865 endpoint->bEndpointAddress), 2866 edge_serial->bulk_in_buffer, 2867 usb_endpoint_maxp(endpoint), 2868 edge_bulk_in_callback, 2869 edge_serial); 2870 bulk_in_found = true; 2871 } 2872 2873 if (!bulk_out_found && 2874 (usb_endpoint_is_bulk_out(endpoint))) { 2875 /* we found a bulk out endpoint */ 2876 dev_dbg(ddev, "found bulk out\n"); 2877 edge_serial->bulk_out_endpoint = 2878 endpoint->bEndpointAddress; 2879 bulk_out_found = true; 2880 } 2881 } 2882 2883 if (response || !interrupt_in_found || !bulk_in_found || 2884 !bulk_out_found) { 2885 if (!response) { 2886 dev_err(ddev, "expected endpoints not found\n"); 2887 response = -ENODEV; 2888 } 2889 2890 goto error; 2891 } 2892 2893 /* start interrupt read for this edgeport this interrupt will 2894 * continue as long as the edgeport is connected */ 2895 response = usb_submit_urb(edge_serial->interrupt_read_urb, 2896 GFP_KERNEL); 2897 if (response) { 2898 dev_err(ddev, "%s - Error %d submitting control urb\n", 2899 __func__, response); 2900 2901 goto error; 2902 } 2903 } 2904 return response; 2905 2906error: 2907 usb_free_urb(edge_serial->interrupt_read_urb); 2908 kfree(edge_serial->interrupt_in_buffer); 2909 2910 usb_free_urb(edge_serial->read_urb); 2911 kfree(edge_serial->bulk_in_buffer); 2912 2913 kfree(edge_serial); 2914 2915 return response; 2916} 2917 2918 2919/**************************************************************************** 2920 * edge_disconnect 2921 * This function is called whenever the device is removed from the usb bus. 2922 ****************************************************************************/ 2923static void edge_disconnect(struct usb_serial *serial) 2924{ 2925 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2926 2927 if (edge_serial->is_epic) { 2928 usb_kill_urb(edge_serial->interrupt_read_urb); 2929 usb_kill_urb(edge_serial->read_urb); 2930 } 2931} 2932 2933 2934/**************************************************************************** 2935 * edge_release 2936 * This function is called when the device structure is deallocated. 2937 ****************************************************************************/ 2938static void edge_release(struct usb_serial *serial) 2939{ 2940 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2941 2942 if (edge_serial->is_epic) { 2943 usb_kill_urb(edge_serial->interrupt_read_urb); 2944 usb_free_urb(edge_serial->interrupt_read_urb); 2945 kfree(edge_serial->interrupt_in_buffer); 2946 2947 usb_kill_urb(edge_serial->read_urb); 2948 usb_free_urb(edge_serial->read_urb); 2949 kfree(edge_serial->bulk_in_buffer); 2950 } 2951 2952 kfree(edge_serial); 2953} 2954 2955static int edge_port_probe(struct usb_serial_port *port) 2956{ 2957 struct edgeport_port *edge_port; 2958 2959 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2960 if (!edge_port) 2961 return -ENOMEM; 2962 2963 spin_lock_init(&edge_port->ep_lock); 2964 edge_port->port = port; 2965 2966 usb_set_serial_port_data(port, edge_port); 2967 2968 return 0; 2969} 2970 2971static void edge_port_remove(struct usb_serial_port *port) 2972{ 2973 struct edgeport_port *edge_port; 2974 2975 edge_port = usb_get_serial_port_data(port); 2976 kfree(edge_port); 2977} 2978 2979static struct usb_serial_driver edgeport_2port_device = { 2980 .driver = { 2981 .owner = THIS_MODULE, 2982 .name = "edgeport_2", 2983 }, 2984 .description = "Edgeport 2 port adapter", 2985 .id_table = edgeport_2port_id_table, 2986 .num_ports = 2, 2987 .num_bulk_in = 1, 2988 .num_bulk_out = 1, 2989 .num_interrupt_in = 1, 2990 .open = edge_open, 2991 .close = edge_close, 2992 .throttle = edge_throttle, 2993 .unthrottle = edge_unthrottle, 2994 .attach = edge_startup, 2995 .disconnect = edge_disconnect, 2996 .release = edge_release, 2997 .port_probe = edge_port_probe, 2998 .port_remove = edge_port_remove, 2999 .ioctl = edge_ioctl, 3000 .set_termios = edge_set_termios, 3001 .tiocmget = edge_tiocmget, 3002 .tiocmset = edge_tiocmset, 3003 .tiocmiwait = usb_serial_generic_tiocmiwait, 3004 .get_icount = usb_serial_generic_get_icount, 3005 .write = edge_write, 3006 .write_room = edge_write_room, 3007 .chars_in_buffer = edge_chars_in_buffer, 3008 .break_ctl = edge_break, 3009 .read_int_callback = edge_interrupt_callback, 3010 .read_bulk_callback = edge_bulk_in_callback, 3011 .write_bulk_callback = edge_bulk_out_data_callback, 3012}; 3013 3014static struct usb_serial_driver edgeport_4port_device = { 3015 .driver = { 3016 .owner = THIS_MODULE, 3017 .name = "edgeport_4", 3018 }, 3019 .description = "Edgeport 4 port adapter", 3020 .id_table = edgeport_4port_id_table, 3021 .num_ports = 4, 3022 .num_bulk_in = 1, 3023 .num_bulk_out = 1, 3024 .num_interrupt_in = 1, 3025 .open = edge_open, 3026 .close = edge_close, 3027 .throttle = edge_throttle, 3028 .unthrottle = edge_unthrottle, 3029 .attach = edge_startup, 3030 .disconnect = edge_disconnect, 3031 .release = edge_release, 3032 .port_probe = edge_port_probe, 3033 .port_remove = edge_port_remove, 3034 .ioctl = edge_ioctl, 3035 .set_termios = edge_set_termios, 3036 .tiocmget = edge_tiocmget, 3037 .tiocmset = edge_tiocmset, 3038 .tiocmiwait = usb_serial_generic_tiocmiwait, 3039 .get_icount = usb_serial_generic_get_icount, 3040 .write = edge_write, 3041 .write_room = edge_write_room, 3042 .chars_in_buffer = edge_chars_in_buffer, 3043 .break_ctl = edge_break, 3044 .read_int_callback = edge_interrupt_callback, 3045 .read_bulk_callback = edge_bulk_in_callback, 3046 .write_bulk_callback = edge_bulk_out_data_callback, 3047}; 3048 3049static struct usb_serial_driver edgeport_8port_device = { 3050 .driver = { 3051 .owner = THIS_MODULE, 3052 .name = "edgeport_8", 3053 }, 3054 .description = "Edgeport 8 port adapter", 3055 .id_table = edgeport_8port_id_table, 3056 .num_ports = 8, 3057 .num_bulk_in = 1, 3058 .num_bulk_out = 1, 3059 .num_interrupt_in = 1, 3060 .open = edge_open, 3061 .close = edge_close, 3062 .throttle = edge_throttle, 3063 .unthrottle = edge_unthrottle, 3064 .attach = edge_startup, 3065 .disconnect = edge_disconnect, 3066 .release = edge_release, 3067 .port_probe = edge_port_probe, 3068 .port_remove = edge_port_remove, 3069 .ioctl = edge_ioctl, 3070 .set_termios = edge_set_termios, 3071 .tiocmget = edge_tiocmget, 3072 .tiocmset = edge_tiocmset, 3073 .tiocmiwait = usb_serial_generic_tiocmiwait, 3074 .get_icount = usb_serial_generic_get_icount, 3075 .write = edge_write, 3076 .write_room = edge_write_room, 3077 .chars_in_buffer = edge_chars_in_buffer, 3078 .break_ctl = edge_break, 3079 .read_int_callback = edge_interrupt_callback, 3080 .read_bulk_callback = edge_bulk_in_callback, 3081 .write_bulk_callback = edge_bulk_out_data_callback, 3082}; 3083 3084static struct usb_serial_driver epic_device = { 3085 .driver = { 3086 .owner = THIS_MODULE, 3087 .name = "epic", 3088 }, 3089 .description = "EPiC device", 3090 .id_table = Epic_port_id_table, 3091 .num_ports = 1, 3092 .num_bulk_in = 1, 3093 .num_bulk_out = 1, 3094 .num_interrupt_in = 1, 3095 .open = edge_open, 3096 .close = edge_close, 3097 .throttle = edge_throttle, 3098 .unthrottle = edge_unthrottle, 3099 .attach = edge_startup, 3100 .disconnect = edge_disconnect, 3101 .release = edge_release, 3102 .port_probe = edge_port_probe, 3103 .port_remove = edge_port_remove, 3104 .ioctl = edge_ioctl, 3105 .set_termios = edge_set_termios, 3106 .tiocmget = edge_tiocmget, 3107 .tiocmset = edge_tiocmset, 3108 .tiocmiwait = usb_serial_generic_tiocmiwait, 3109 .get_icount = usb_serial_generic_get_icount, 3110 .write = edge_write, 3111 .write_room = edge_write_room, 3112 .chars_in_buffer = edge_chars_in_buffer, 3113 .break_ctl = edge_break, 3114 .read_int_callback = edge_interrupt_callback, 3115 .read_bulk_callback = edge_bulk_in_callback, 3116 .write_bulk_callback = edge_bulk_out_data_callback, 3117}; 3118 3119static struct usb_serial_driver * const serial_drivers[] = { 3120 &edgeport_2port_device, &edgeport_4port_device, 3121 &edgeport_8port_device, &epic_device, NULL 3122}; 3123 3124module_usb_serial_driver(serial_drivers, id_table_combined); 3125 3126MODULE_AUTHOR(DRIVER_AUTHOR); 3127MODULE_DESCRIPTION(DRIVER_DESC); 3128MODULE_LICENSE("GPL"); 3129MODULE_FIRMWARE("edgeport/boot.fw"); 3130MODULE_FIRMWARE("edgeport/boot2.fw"); 3131MODULE_FIRMWARE("edgeport/down.fw"); 3132MODULE_FIRMWARE("edgeport/down2.fw"); 3133