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io_edgeport.c
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linux-6.19.14/drivers/usb/serial/io_edgeport.c
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 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) }, 77 { } 78}; 79 80static const struct usb_device_id edgeport_8port_id_table[] = { 81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 86 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 87 { } 88}; 89 90static const struct usb_device_id Epic_port_id_table[] = { 91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 95 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 98 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 99 { } 100}; 101 102/* Devices that this driver supports */ 103static const struct usb_device_id id_table_combined[] = { 104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) }, 126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 129 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 130 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 132 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 133 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 134 { } /* Terminating entry */ 135}; 136 137MODULE_DEVICE_TABLE(usb, id_table_combined); 138 139 140/* receive port state */ 141enum RXSTATE { 142 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 143 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 144 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 145 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 146}; 147 148 149/* Transmit Fifo 150 * This Transmit queue is an extension of the edgeport Rx buffer. 151 * The maximum amount of data buffered in both the edgeport 152 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 153 */ 154struct TxFifo { 155 unsigned int head; /* index to head pointer (write) */ 156 unsigned int tail; /* index to tail pointer (read) */ 157 unsigned int count; /* Bytes in queue */ 158 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 159 unsigned char *fifo; /* allocated Buffer */ 160}; 161 162/* This structure holds all of the local port information */ 163struct edgeport_port { 164 __u16 txCredits; /* our current credits for this port */ 165 __u16 maxTxCredits; /* the max size of the port */ 166 167 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 168 struct urb *write_urb; /* write URB for this port */ 169 bool write_in_progress; /* 'true' while a write URB is outstanding */ 170 spinlock_t ep_lock; 171 172 __u8 shadowLCR; /* last LCR value received */ 173 __u8 shadowMCR; /* last MCR value received */ 174 __u8 shadowMSR; /* last MSR value received */ 175 __u8 shadowLSR; /* last LSR value received */ 176 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 177 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 178 __u8 validDataMask; 179 __u32 baudRate; 180 181 bool open; 182 bool openPending; 183 bool commandPending; 184 bool closePending; 185 bool chaseResponsePending; 186 187 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 188 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 189 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 190 191 struct usb_serial_port *port; /* loop back to the owner of this object */ 192}; 193 194 195/* This structure holds all of the individual device information */ 196struct edgeport_serial { 197 char name[MAX_NAME_LEN+2]; /* string name of this device */ 198 199 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 200 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 201 struct edgeport_product_info product_info; /* Product Info */ 202 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 203 int is_epic; /* flag if EPiC device or not */ 204 205 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 206 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 207 struct urb *interrupt_read_urb; /* our interrupt urb */ 208 209 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 210 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 211 struct urb *read_urb; /* our bulk read urb */ 212 bool read_in_progress; 213 spinlock_t es_lock; 214 215 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 216 217 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 218 219 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 220 __u8 rxHeader1; /* receive header byte 1 */ 221 __u8 rxHeader2; /* receive header byte 2 */ 222 __u8 rxHeader3; /* receive header byte 3 */ 223 __u8 rxPort; /* the port that we are currently receiving data for */ 224 __u8 rxStatusCode; /* the receive status code */ 225 __u8 rxStatusParam; /* the receive status parameter */ 226 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 227 struct usb_serial *serial; /* loop back to the owner of this object */ 228}; 229 230/* baud rate information */ 231struct divisor_table_entry { 232 __u32 BaudRate; 233 __u16 Divisor; 234}; 235 236/* 237 * Define table of divisors for Rev A EdgePort/4 hardware 238 * These assume a 3.6864MHz crystal, the standard /16, and 239 * MCR.7 = 0. 240 */ 241 242static const struct divisor_table_entry divisor_table[] = { 243 { 50, 4608}, 244 { 75, 3072}, 245 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 246 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 247 { 150, 1536}, 248 { 300, 768}, 249 { 600, 384}, 250 { 1200, 192}, 251 { 1800, 128}, 252 { 2400, 96}, 253 { 4800, 48}, 254 { 7200, 32}, 255 { 9600, 24}, 256 { 14400, 16}, 257 { 19200, 12}, 258 { 38400, 6}, 259 { 57600, 4}, 260 { 115200, 2}, 261 { 230400, 1}, 262}; 263 264/* Number of outstanding Command Write Urbs */ 265static atomic_t CmdUrbs = ATOMIC_INIT(0); 266 267 268/* function prototypes */ 269 270static void edge_close(struct usb_serial_port *port); 271 272static void process_rcvd_data(struct edgeport_serial *edge_serial, 273 unsigned char *buffer, __u16 bufferLength); 274static void process_rcvd_status(struct edgeport_serial *edge_serial, 275 __u8 byte2, __u8 byte3); 276static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 277 int length); 278static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 279static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 280 __u8 lsr, __u8 data); 281static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 282 __u8 param); 283static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 284static void change_port_settings(struct tty_struct *tty, 285 struct edgeport_port *edge_port, 286 const struct ktermios *old_termios); 287static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 288 __u8 regNum, __u8 regValue); 289static int write_cmd_usb(struct edgeport_port *edge_port, 290 unsigned char *buffer, int writeLength); 291static void send_more_port_data(struct edgeport_serial *edge_serial, 292 struct edgeport_port *edge_port); 293 294static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 295 __u16 length, const __u8 *data); 296 297/* ************************************************************************ */ 298/* ************************************************************************ */ 299/* ************************************************************************ */ 300/* ************************************************************************ */ 301 302/************************************************************************ 303 * * 304 * update_edgeport_E2PROM() Compare current versions of * 305 * Boot ROM and Manufacture * 306 * Descriptors with versions * 307 * embedded in this driver * 308 * * 309 ************************************************************************/ 310static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 311{ 312 struct device *dev = &edge_serial->serial->dev->dev; 313 __u32 BootCurVer; 314 __u32 BootNewVer; 315 __u8 BootMajorVersion; 316 __u8 BootMinorVersion; 317 __u16 BootBuildNumber; 318 __u32 Bootaddr; 319 const struct ihex_binrec *rec; 320 const struct firmware *fw; 321 const char *fw_name; 322 int response; 323 324 switch (edge_serial->product_info.iDownloadFile) { 325 case EDGE_DOWNLOAD_FILE_I930: 326 fw_name = "edgeport/boot.fw"; 327 break; 328 case EDGE_DOWNLOAD_FILE_80251: 329 fw_name = "edgeport/boot2.fw"; 330 break; 331 default: 332 return; 333 } 334 335 response = request_ihex_firmware(&fw, fw_name, 336 &edge_serial->serial->dev->dev); 337 if (response) { 338 dev_err(dev, "Failed to load image \"%s\" err %d\n", 339 fw_name, response); 340 return; 341 } 342 343 rec = (const struct ihex_binrec *)fw->data; 344 BootMajorVersion = rec->data[0]; 345 BootMinorVersion = rec->data[1]; 346 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 347 348 /* Check Boot Image Version */ 349 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 350 (edge_serial->boot_descriptor.MinorVersion << 16) + 351 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 352 353 BootNewVer = (BootMajorVersion << 24) + 354 (BootMinorVersion << 16) + 355 BootBuildNumber; 356 357 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 358 edge_serial->boot_descriptor.MajorVersion, 359 edge_serial->boot_descriptor.MinorVersion, 360 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 361 362 363 if (BootNewVer > BootCurVer) { 364 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 365 edge_serial->boot_descriptor.MajorVersion, 366 edge_serial->boot_descriptor.MinorVersion, 367 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 368 BootMajorVersion, BootMinorVersion, BootBuildNumber); 369 370 dev_dbg(dev, "Downloading new Boot Image\n"); 371 372 for (rec = ihex_next_binrec(rec); rec; 373 rec = ihex_next_binrec(rec)) { 374 Bootaddr = be32_to_cpu(rec->addr); 375 response = rom_write(edge_serial->serial, 376 Bootaddr >> 16, 377 Bootaddr & 0xFFFF, 378 be16_to_cpu(rec->len), 379 &rec->data[0]); 380 if (response < 0) { 381 dev_err(&edge_serial->serial->dev->dev, 382 "rom_write failed (%x, %x, %d)\n", 383 Bootaddr >> 16, Bootaddr & 0xFFFF, 384 be16_to_cpu(rec->len)); 385 break; 386 } 387 } 388 } else { 389 dev_dbg(dev, "Boot Image -- already up to date\n"); 390 } 391 release_firmware(fw); 392} 393 394static void dump_product_info(struct edgeport_serial *edge_serial, 395 struct edgeport_product_info *product_info) 396{ 397 struct device *dev = &edge_serial->serial->dev->dev; 398 399 /* Dump Product Info structure */ 400 dev_dbg(dev, "**Product Information:\n"); 401 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 402 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 403 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 404 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 405 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 406 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 407 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 408 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 409 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 410 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 411 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 412 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 413 product_info->BootMajorVersion, 414 product_info->BootMinorVersion, 415 le16_to_cpu(product_info->BootBuildNumber)); 416 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 417 product_info->FirmwareMajorVersion, 418 product_info->FirmwareMinorVersion, 419 le16_to_cpu(product_info->FirmwareBuildNumber)); 420 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 421 product_info->ManufactureDescDate[0], 422 product_info->ManufactureDescDate[1], 423 product_info->ManufactureDescDate[2]+1900); 424 dev_dbg(dev, " iDownloadFile 0x%x\n", 425 product_info->iDownloadFile); 426 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 427} 428 429static void get_product_info(struct edgeport_serial *edge_serial) 430{ 431 struct edgeport_product_info *product_info = &edge_serial->product_info; 432 433 memset(product_info, 0, sizeof(struct edgeport_product_info)); 434 435 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 436 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 437 product_info->ProdInfoVer = 0; 438 439 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 440 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 441 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 442 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 443 444 product_info->BootMajorVersion = 445 edge_serial->boot_descriptor.MajorVersion; 446 product_info->BootMinorVersion = 447 edge_serial->boot_descriptor.MinorVersion; 448 product_info->BootBuildNumber = 449 edge_serial->boot_descriptor.BuildNumber; 450 451 memcpy(product_info->ManufactureDescDate, 452 edge_serial->manuf_descriptor.DescDate, 453 sizeof(edge_serial->manuf_descriptor.DescDate)); 454 455 /* check if this is 2nd generation hardware */ 456 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 457 & ION_DEVICE_ID_80251_NETCHIP) 458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 459 else 460 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 461 462 /* Determine Product type and set appropriate flags */ 463 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 464 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 465 case ION_DEVICE_ID_EDGEPORT_4T: 466 case ION_DEVICE_ID_EDGEPORT_4: 467 case ION_DEVICE_ID_EDGEPORT_2: 468 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 469 case ION_DEVICE_ID_EDGEPORT_8: 470 case ION_DEVICE_ID_EDGEPORT_421: 471 case ION_DEVICE_ID_EDGEPORT_21: 472 case ION_DEVICE_ID_EDGEPORT_2_DIN: 473 case ION_DEVICE_ID_EDGEPORT_4_DIN: 474 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 475 case ION_DEVICE_ID_BLACKBOX_IC135A: 476 product_info->IsRS232 = 1; 477 break; 478 479 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 480 product_info->IsRS422 = 1; 481 product_info->IsRS485 = 1; 482 break; 483 484 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 485 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 486 product_info->IsRS422 = 1; 487 break; 488 } 489 490 dump_product_info(edge_serial, product_info); 491} 492 493static int get_epic_descriptor(struct edgeport_serial *ep) 494{ 495 int result; 496 struct usb_serial *serial = ep->serial; 497 struct edgeport_product_info *product_info = &ep->product_info; 498 struct edge_compatibility_descriptor *epic; 499 struct edge_compatibility_bits *bits; 500 struct device *dev = &serial->dev->dev; 501 502 ep->is_epic = 0; 503 504 epic = kmalloc(sizeof(*epic), GFP_KERNEL); 505 if (!epic) 506 return -ENOMEM; 507 508 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 509 USB_REQUEST_ION_GET_EPIC_DESC, 510 0xC0, 0x00, 0x00, 511 epic, sizeof(*epic), 512 300); 513 if (result == sizeof(*epic)) { 514 ep->is_epic = 1; 515 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 516 memset(product_info, 0, sizeof(struct edgeport_product_info)); 517 518 product_info->NumPorts = epic->NumPorts; 519 product_info->ProdInfoVer = 0; 520 product_info->FirmwareMajorVersion = epic->MajorVersion; 521 product_info->FirmwareMinorVersion = epic->MinorVersion; 522 product_info->FirmwareBuildNumber = epic->BuildNumber; 523 product_info->iDownloadFile = epic->iDownloadFile; 524 product_info->EpicVer = epic->EpicVer; 525 product_info->Epic = epic->Supports; 526 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 527 dump_product_info(ep, product_info); 528 529 bits = &ep->epic_descriptor.Supports; 530 dev_dbg(dev, "**EPIC descriptor:\n"); 531 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 532 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 533 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 534 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 535 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 536 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 537 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 538 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 539 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 540 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 541 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 542 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 543 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 544 545 result = 0; 546 } else if (result >= 0) { 547 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 548 result); 549 result = -EIO; 550 } 551 552 kfree(epic); 553 554 return result; 555} 556 557 558/************************************************************************/ 559/************************************************************************/ 560/* U S B C A L L B A C K F U N C T I O N S */ 561/* U S B C A L L B A C K F U N C T I O N S */ 562/************************************************************************/ 563/************************************************************************/ 564 565/***************************************************************************** 566 * edge_interrupt_callback 567 * this is the callback function for when we have received data on the 568 * interrupt endpoint. 569 *****************************************************************************/ 570static void edge_interrupt_callback(struct urb *urb) 571{ 572 struct edgeport_serial *edge_serial = urb->context; 573 struct device *dev; 574 struct edgeport_port *edge_port; 575 struct usb_serial_port *port; 576 unsigned char *data = urb->transfer_buffer; 577 int length = urb->actual_length; 578 unsigned long flags; 579 int bytes_avail; 580 int position; 581 int txCredits; 582 int portNumber; 583 int result; 584 int status = urb->status; 585 586 switch (status) { 587 case 0: 588 /* success */ 589 break; 590 case -ECONNRESET: 591 case -ENOENT: 592 case -ESHUTDOWN: 593 /* this urb is terminated, clean up */ 594 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 595 return; 596 default: 597 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 598 goto exit; 599 } 600 601 dev = &edge_serial->serial->dev->dev; 602 603 /* process this interrupt-read even if there are no ports open */ 604 if (length) { 605 usb_serial_debug_data(dev, __func__, length, data); 606 607 if (length > 1) { 608 bytes_avail = data[0] | (data[1] << 8); 609 if (bytes_avail) { 610 spin_lock_irqsave(&edge_serial->es_lock, flags); 611 edge_serial->rxBytesAvail += bytes_avail; 612 dev_dbg(dev, 613 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 614 __func__, bytes_avail, 615 edge_serial->rxBytesAvail, 616 edge_serial->read_in_progress); 617 618 if (edge_serial->rxBytesAvail > 0 && 619 !edge_serial->read_in_progress) { 620 dev_dbg(dev, "%s - posting a read\n", __func__); 621 edge_serial->read_in_progress = true; 622 623 /* we have pending bytes on the 624 bulk in pipe, send a request */ 625 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 626 if (result) { 627 dev_err(dev, 628 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 629 __func__, result); 630 edge_serial->read_in_progress = false; 631 } 632 } 633 spin_unlock_irqrestore(&edge_serial->es_lock, 634 flags); 635 } 636 } 637 /* grab the txcredits for the ports if available */ 638 position = 2; 639 portNumber = 0; 640 while ((position < length - 1) && 641 (portNumber < edge_serial->serial->num_ports)) { 642 txCredits = data[position] | (data[position+1] << 8); 643 if (txCredits) { 644 port = edge_serial->serial->port[portNumber]; 645 edge_port = usb_get_serial_port_data(port); 646 if (edge_port && edge_port->open) { 647 spin_lock_irqsave(&edge_port->ep_lock, 648 flags); 649 edge_port->txCredits += txCredits; 650 spin_unlock_irqrestore(&edge_port->ep_lock, 651 flags); 652 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 653 __func__, portNumber, 654 edge_port->txCredits); 655 656 /* tell the tty driver that something 657 has changed */ 658 tty_port_tty_wakeup(&edge_port->port->port); 659 /* Since we have more credit, check 660 if more data can be sent */ 661 send_more_port_data(edge_serial, 662 edge_port); 663 } 664 } 665 position += 2; 666 ++portNumber; 667 } 668 } 669 670exit: 671 result = usb_submit_urb(urb, GFP_ATOMIC); 672 if (result) 673 dev_err(&urb->dev->dev, 674 "%s - Error %d submitting control urb\n", 675 __func__, result); 676} 677 678 679/***************************************************************************** 680 * edge_bulk_in_callback 681 * this is the callback function for when we have received data on the 682 * bulk in endpoint. 683 *****************************************************************************/ 684static void edge_bulk_in_callback(struct urb *urb) 685{ 686 struct edgeport_serial *edge_serial = urb->context; 687 struct device *dev; 688 unsigned char *data = urb->transfer_buffer; 689 int retval; 690 __u16 raw_data_length; 691 int status = urb->status; 692 unsigned long flags; 693 694 if (status) { 695 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 696 __func__, status); 697 edge_serial->read_in_progress = false; 698 return; 699 } 700 701 if (urb->actual_length == 0) { 702 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 703 edge_serial->read_in_progress = false; 704 return; 705 } 706 707 dev = &edge_serial->serial->dev->dev; 708 raw_data_length = urb->actual_length; 709 710 usb_serial_debug_data(dev, __func__, raw_data_length, data); 711 712 spin_lock_irqsave(&edge_serial->es_lock, flags); 713 714 /* decrement our rxBytes available by the number that we just got */ 715 edge_serial->rxBytesAvail -= raw_data_length; 716 717 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 718 raw_data_length, edge_serial->rxBytesAvail); 719 720 process_rcvd_data(edge_serial, data, urb->actual_length); 721 722 /* check to see if there's any more data for us to read */ 723 if (edge_serial->rxBytesAvail > 0) { 724 dev_dbg(dev, "%s - posting a read\n", __func__); 725 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 726 if (retval) { 727 dev_err(dev, 728 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 729 __func__, retval); 730 edge_serial->read_in_progress = false; 731 } 732 } else { 733 edge_serial->read_in_progress = false; 734 } 735 736 spin_unlock_irqrestore(&edge_serial->es_lock, flags); 737} 738 739 740/***************************************************************************** 741 * edge_bulk_out_data_callback 742 * this is the callback function for when we have finished sending 743 * serial data on the bulk out endpoint. 744 *****************************************************************************/ 745static void edge_bulk_out_data_callback(struct urb *urb) 746{ 747 struct edgeport_port *edge_port = urb->context; 748 int status = urb->status; 749 750 if (status) { 751 dev_dbg(&urb->dev->dev, 752 "%s - nonzero write bulk status received: %d\n", 753 __func__, status); 754 } 755 756 if (edge_port->open) 757 tty_port_tty_wakeup(&edge_port->port->port); 758 759 /* Release the Write URB */ 760 edge_port->write_in_progress = false; 761 762 /* Check if more data needs to be sent */ 763 send_more_port_data((struct edgeport_serial *) 764 (usb_get_serial_data(edge_port->port->serial)), edge_port); 765} 766 767 768/***************************************************************************** 769 * BulkOutCmdCallback 770 * this is the callback function for when we have finished sending a 771 * command on the bulk out endpoint. 772 *****************************************************************************/ 773static void edge_bulk_out_cmd_callback(struct urb *urb) 774{ 775 struct edgeport_port *edge_port = urb->context; 776 struct device *dev = &urb->dev->dev; 777 int status = urb->status; 778 779 atomic_dec(&CmdUrbs); 780 dev_dbg(dev, "%s - FREE URB %p (outstanding %d)\n", __func__, urb, 781 atomic_read(&CmdUrbs)); 782 783 784 /* clean up the transfer buffer */ 785 kfree(urb->transfer_buffer); 786 787 /* Free the command urb */ 788 usb_free_urb(urb); 789 790 if (status) { 791 dev_dbg(dev, "%s - nonzero write bulk status received: %d\n", 792 __func__, status); 793 return; 794 } 795 796 /* tell the tty driver that something has changed */ 797 if (edge_port->open) 798 tty_port_tty_wakeup(&edge_port->port->port); 799 800 /* we have completed the command */ 801 edge_port->commandPending = false; 802 wake_up(&edge_port->wait_command); 803} 804 805 806/***************************************************************************** 807 * Driver tty interface functions 808 *****************************************************************************/ 809 810/***************************************************************************** 811 * SerialOpen 812 * this function is called by the tty driver when a port is opened 813 * If successful, we return 0 814 * Otherwise we return a negative error number. 815 *****************************************************************************/ 816static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 817{ 818 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 819 struct device *dev = &port->dev; 820 struct usb_serial *serial; 821 struct edgeport_serial *edge_serial; 822 int response; 823 824 if (edge_port == NULL) 825 return -ENODEV; 826 827 /* see if we've set up our endpoint info yet (can't set it up 828 in edge_startup as the structures were not set up at that time.) */ 829 serial = port->serial; 830 edge_serial = usb_get_serial_data(serial); 831 if (edge_serial == NULL) 832 return -ENODEV; 833 if (edge_serial->interrupt_in_buffer == NULL) { 834 struct usb_serial_port *port0 = serial->port[0]; 835 836 /* not set up yet, so do it now */ 837 edge_serial->interrupt_in_buffer = 838 port0->interrupt_in_buffer; 839 edge_serial->interrupt_in_endpoint = 840 port0->interrupt_in_endpointAddress; 841 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 842 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 843 edge_serial->bulk_in_endpoint = 844 port0->bulk_in_endpointAddress; 845 edge_serial->read_urb = port0->read_urb; 846 edge_serial->bulk_out_endpoint = 847 port0->bulk_out_endpointAddress; 848 849 /* set up our interrupt urb */ 850 usb_fill_int_urb(edge_serial->interrupt_read_urb, 851 serial->dev, 852 usb_rcvintpipe(serial->dev, 853 port0->interrupt_in_endpointAddress), 854 port0->interrupt_in_buffer, 855 edge_serial->interrupt_read_urb->transfer_buffer_length, 856 edge_interrupt_callback, edge_serial, 857 edge_serial->interrupt_read_urb->interval); 858 859 /* set up our bulk in urb */ 860 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 861 usb_rcvbulkpipe(serial->dev, 862 port0->bulk_in_endpointAddress), 863 port0->bulk_in_buffer, 864 edge_serial->read_urb->transfer_buffer_length, 865 edge_bulk_in_callback, edge_serial); 866 edge_serial->read_in_progress = false; 867 868 /* start interrupt read for this edgeport 869 * this interrupt will continue as long 870 * as the edgeport is connected */ 871 response = usb_submit_urb(edge_serial->interrupt_read_urb, 872 GFP_KERNEL); 873 if (response) { 874 dev_err(dev, "%s - Error %d submitting control urb\n", 875 __func__, response); 876 } 877 } 878 879 /* initialize our wait queues */ 880 init_waitqueue_head(&edge_port->wait_open); 881 init_waitqueue_head(&edge_port->wait_chase); 882 init_waitqueue_head(&edge_port->wait_command); 883 884 /* initialize our port settings */ 885 edge_port->txCredits = 0; /* Can't send any data yet */ 886 /* Must always set this bit to enable ints! */ 887 edge_port->shadowMCR = MCR_MASTER_IE; 888 edge_port->chaseResponsePending = false; 889 890 /* send a open port command */ 891 edge_port->openPending = true; 892 edge_port->open = false; 893 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 894 895 if (response < 0) { 896 dev_err(dev, "%s - error sending open port command\n", __func__); 897 edge_port->openPending = false; 898 return -ENODEV; 899 } 900 901 /* now wait for the port to be completely opened */ 902 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 903 OPEN_TIMEOUT); 904 905 if (!edge_port->open) { 906 /* open timed out */ 907 dev_dbg(dev, "%s - open timeout\n", __func__); 908 edge_port->openPending = false; 909 return -ENODEV; 910 } 911 912 /* create the txfifo */ 913 edge_port->txfifo.head = 0; 914 edge_port->txfifo.tail = 0; 915 edge_port->txfifo.count = 0; 916 edge_port->txfifo.size = edge_port->maxTxCredits; 917 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 918 919 if (!edge_port->txfifo.fifo) { 920 edge_close(port); 921 return -ENOMEM; 922 } 923 924 /* Allocate a URB for the write */ 925 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 926 edge_port->write_in_progress = false; 927 928 if (!edge_port->write_urb) { 929 edge_close(port); 930 return -ENOMEM; 931 } 932 933 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 934 __func__, edge_port->maxTxCredits); 935 936 return 0; 937} 938 939 940/************************************************************************ 941 * 942 * block_until_chase_response 943 * 944 * This function will block the close until one of the following: 945 * 1. Response to our Chase comes from Edgeport 946 * 2. A timeout of 10 seconds without activity has expired 947 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 948 * 949 ************************************************************************/ 950static void block_until_chase_response(struct edgeport_port *edge_port) 951{ 952 struct device *dev = &edge_port->port->dev; 953 DEFINE_WAIT(wait); 954 __u16 lastCredits; 955 int timeout = 1*HZ; 956 int loop = 10; 957 958 while (1) { 959 /* Save Last credits */ 960 lastCredits = edge_port->txCredits; 961 962 /* Did we get our Chase response */ 963 if (!edge_port->chaseResponsePending) { 964 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 965 966 /* did we get all of our credit back? */ 967 if (edge_port->txCredits == edge_port->maxTxCredits) { 968 dev_dbg(dev, "%s - Got all credits\n", __func__); 969 return; 970 } 971 } 972 973 /* Block the thread for a while */ 974 prepare_to_wait(&edge_port->wait_chase, &wait, 975 TASK_UNINTERRUPTIBLE); 976 schedule_timeout(timeout); 977 finish_wait(&edge_port->wait_chase, &wait); 978 979 if (lastCredits == edge_port->txCredits) { 980 /* No activity.. count down. */ 981 loop--; 982 if (loop == 0) { 983 edge_port->chaseResponsePending = false; 984 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 985 return; 986 } 987 } else { 988 /* Reset timeout value back to 10 seconds */ 989 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 990 lastCredits, edge_port->txCredits); 991 loop = 10; 992 } 993 } 994} 995 996 997/************************************************************************ 998 * 999 * block_until_tx_empty 1000 * 1001 * This function will block the close until one of the following: 1002 * 1. TX count are 0 1003 * 2. The edgeport has stopped 1004 * 3. A timeout of 3 seconds without activity has expired 1005 * 1006 ************************************************************************/ 1007static void block_until_tx_empty(struct edgeport_port *edge_port) 1008{ 1009 struct device *dev = &edge_port->port->dev; 1010 DEFINE_WAIT(wait); 1011 struct TxFifo *fifo = &edge_port->txfifo; 1012 __u32 lastCount; 1013 int timeout = HZ/10; 1014 int loop = 30; 1015 1016 while (1) { 1017 /* Save Last count */ 1018 lastCount = fifo->count; 1019 1020 /* Is the Edgeport Buffer empty? */ 1021 if (lastCount == 0) { 1022 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1023 return; 1024 } 1025 1026 /* Block the thread for a while */ 1027 prepare_to_wait(&edge_port->wait_chase, &wait, 1028 TASK_UNINTERRUPTIBLE); 1029 schedule_timeout(timeout); 1030 finish_wait(&edge_port->wait_chase, &wait); 1031 1032 dev_dbg(dev, "%s wait\n", __func__); 1033 1034 if (lastCount == fifo->count) { 1035 /* No activity.. count down. */ 1036 loop--; 1037 if (loop == 0) { 1038 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1039 return; 1040 } 1041 } else { 1042 /* Reset timeout value back to seconds */ 1043 loop = 30; 1044 } 1045 } 1046} 1047 1048 1049/***************************************************************************** 1050 * edge_close 1051 * this function is called by the tty driver when a port is closed 1052 *****************************************************************************/ 1053static void edge_close(struct usb_serial_port *port) 1054{ 1055 struct edgeport_serial *edge_serial; 1056 struct edgeport_port *edge_port; 1057 int status; 1058 1059 edge_serial = usb_get_serial_data(port->serial); 1060 edge_port = usb_get_serial_port_data(port); 1061 if (edge_serial == NULL || edge_port == NULL) 1062 return; 1063 1064 /* block until tx is empty */ 1065 block_until_tx_empty(edge_port); 1066 1067 edge_port->closePending = true; 1068 1069 if (!edge_serial->is_epic || 1070 edge_serial->epic_descriptor.Supports.IOSPChase) { 1071 /* flush and chase */ 1072 edge_port->chaseResponsePending = true; 1073 1074 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1075 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1076 if (status == 0) 1077 /* block until chase finished */ 1078 block_until_chase_response(edge_port); 1079 else 1080 edge_port->chaseResponsePending = false; 1081 } 1082 1083 if (!edge_serial->is_epic || 1084 edge_serial->epic_descriptor.Supports.IOSPClose) { 1085 /* close the port */ 1086 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1087 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1088 } 1089 1090 /* port->close = true; */ 1091 edge_port->closePending = false; 1092 edge_port->open = false; 1093 edge_port->openPending = false; 1094 1095 usb_kill_urb(edge_port->write_urb); 1096 1097 if (edge_port->write_urb) { 1098 /* if this urb had a transfer buffer already 1099 (old transfer) free it */ 1100 kfree(edge_port->write_urb->transfer_buffer); 1101 usb_free_urb(edge_port->write_urb); 1102 edge_port->write_urb = NULL; 1103 } 1104 kfree(edge_port->txfifo.fifo); 1105 edge_port->txfifo.fifo = NULL; 1106} 1107 1108/***************************************************************************** 1109 * SerialWrite 1110 * this function is called by the tty driver when data should be written 1111 * to the port. 1112 * If successful, we return the number of bytes written, otherwise we 1113 * return a negative error number. 1114 *****************************************************************************/ 1115static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1116 const unsigned char *data, int count) 1117{ 1118 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1119 struct TxFifo *fifo; 1120 int copySize; 1121 int bytesleft; 1122 int firsthalf; 1123 int secondhalf; 1124 unsigned long flags; 1125 1126 if (edge_port == NULL) 1127 return -ENODEV; 1128 1129 /* get a pointer to the Tx fifo */ 1130 fifo = &edge_port->txfifo; 1131 1132 spin_lock_irqsave(&edge_port->ep_lock, flags); 1133 1134 /* calculate number of bytes to put in fifo */ 1135 copySize = min_t(unsigned int, count, 1136 (edge_port->txCredits - fifo->count)); 1137 1138 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1139 __func__, count, edge_port->txCredits - fifo->count, copySize); 1140 1141 /* catch writes of 0 bytes which the tty driver likes to give us, 1142 and when txCredits is empty */ 1143 if (copySize == 0) { 1144 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1145 goto finish_write; 1146 } 1147 1148 /* queue the data 1149 * since we can never overflow the buffer we do not have to check for a 1150 * full condition 1151 * 1152 * the copy is done is two parts -- first fill to the end of the buffer 1153 * then copy the reset from the start of the buffer 1154 */ 1155 bytesleft = fifo->size - fifo->head; 1156 firsthalf = min(bytesleft, copySize); 1157 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1158 firsthalf, bytesleft); 1159 1160 /* now copy our data */ 1161 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1162 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1163 1164 /* update the index and size */ 1165 fifo->head += firsthalf; 1166 fifo->count += firsthalf; 1167 1168 /* wrap the index */ 1169 if (fifo->head == fifo->size) 1170 fifo->head = 0; 1171 1172 secondhalf = copySize-firsthalf; 1173 1174 if (secondhalf) { 1175 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1176 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1177 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1178 /* update the index and size */ 1179 fifo->count += secondhalf; 1180 fifo->head += secondhalf; 1181 /* No need to check for wrap since we can not get to end of 1182 * the fifo in this part 1183 */ 1184 } 1185 1186finish_write: 1187 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1188 1189 send_more_port_data((struct edgeport_serial *) 1190 usb_get_serial_data(port->serial), edge_port); 1191 1192 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1193 __func__, copySize, edge_port->txCredits, fifo->count); 1194 1195 return copySize; 1196} 1197 1198 1199/************************************************************************ 1200 * 1201 * send_more_port_data() 1202 * 1203 * This routine attempts to write additional UART transmit data 1204 * to a port over the USB bulk pipe. It is called (1) when new 1205 * data has been written to a port's TxBuffer from higher layers 1206 * (2) when the peripheral sends us additional TxCredits indicating 1207 * that it can accept more Tx data for a given port; and (3) when 1208 * a bulk write completes successfully and we want to see if we 1209 * can transmit more. 1210 * 1211 ************************************************************************/ 1212static void send_more_port_data(struct edgeport_serial *edge_serial, 1213 struct edgeport_port *edge_port) 1214{ 1215 struct TxFifo *fifo = &edge_port->txfifo; 1216 struct device *dev = &edge_port->port->dev; 1217 struct urb *urb; 1218 unsigned char *buffer; 1219 int status; 1220 int count; 1221 int bytesleft; 1222 int firsthalf; 1223 int secondhalf; 1224 unsigned long flags; 1225 1226 spin_lock_irqsave(&edge_port->ep_lock, flags); 1227 1228 if (edge_port->write_in_progress || 1229 !edge_port->open || 1230 (fifo->count == 0)) { 1231 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1232 __func__, fifo->count, edge_port->write_in_progress); 1233 goto exit_send; 1234 } 1235 1236 /* since the amount of data in the fifo will always fit into the 1237 * edgeport buffer we do not need to check the write length 1238 * 1239 * Do we have enough credits for this port to make it worthwhile 1240 * to bother queueing a write. If it's too small, say a few bytes, 1241 * it's better to wait for more credits so we can do a larger write. 1242 */ 1243 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1244 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1245 __func__, fifo->count, edge_port->txCredits); 1246 goto exit_send; 1247 } 1248 1249 /* lock this write */ 1250 edge_port->write_in_progress = true; 1251 1252 /* get a pointer to the write_urb */ 1253 urb = edge_port->write_urb; 1254 1255 /* make sure transfer buffer is freed */ 1256 kfree(urb->transfer_buffer); 1257 urb->transfer_buffer = NULL; 1258 1259 /* build the data header for the buffer and port that we are about 1260 to send out */ 1261 count = fifo->count; 1262 buffer = kmalloc(count+2, GFP_ATOMIC); 1263 if (!buffer) { 1264 edge_port->write_in_progress = false; 1265 goto exit_send; 1266 } 1267 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1268 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1269 1270 /* now copy our data */ 1271 bytesleft = fifo->size - fifo->tail; 1272 firsthalf = min(bytesleft, count); 1273 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1274 fifo->tail += firsthalf; 1275 fifo->count -= firsthalf; 1276 if (fifo->tail == fifo->size) 1277 fifo->tail = 0; 1278 1279 secondhalf = count-firsthalf; 1280 if (secondhalf) { 1281 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1282 secondhalf); 1283 fifo->tail += secondhalf; 1284 fifo->count -= secondhalf; 1285 } 1286 1287 if (count) 1288 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1289 1290 /* fill up the urb with all of our data and submit it */ 1291 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1292 usb_sndbulkpipe(edge_serial->serial->dev, 1293 edge_serial->bulk_out_endpoint), 1294 buffer, count+2, 1295 edge_bulk_out_data_callback, edge_port); 1296 1297 /* decrement the number of credits we have by the number we just sent */ 1298 edge_port->txCredits -= count; 1299 edge_port->port->icount.tx += count; 1300 1301 status = usb_submit_urb(urb, GFP_ATOMIC); 1302 if (status) { 1303 /* something went wrong */ 1304 dev_err_console(edge_port->port, 1305 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1306 __func__, status); 1307 edge_port->write_in_progress = false; 1308 1309 /* revert the credits as something bad happened. */ 1310 edge_port->txCredits += count; 1311 edge_port->port->icount.tx -= count; 1312 } 1313 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1314 __func__, count, edge_port->txCredits, fifo->count); 1315 1316exit_send: 1317 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1318} 1319 1320 1321/***************************************************************************** 1322 * edge_write_room 1323 * this function is called by the tty driver when it wants to know how 1324 * many bytes of data we can accept for a specific port. 1325 *****************************************************************************/ 1326static unsigned int edge_write_room(struct tty_struct *tty) 1327{ 1328 struct usb_serial_port *port = tty->driver_data; 1329 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1330 unsigned int room; 1331 unsigned long flags; 1332 1333 /* total of both buffers is still txCredit */ 1334 spin_lock_irqsave(&edge_port->ep_lock, flags); 1335 room = edge_port->txCredits - edge_port->txfifo.count; 1336 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1337 1338 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 1339 return room; 1340} 1341 1342 1343/***************************************************************************** 1344 * edge_chars_in_buffer 1345 * this function is called by the tty driver when it wants to know how 1346 * many bytes of data we currently have outstanding in the port (data that 1347 * has been written, but hasn't made it out the port yet) 1348 *****************************************************************************/ 1349static unsigned int edge_chars_in_buffer(struct tty_struct *tty) 1350{ 1351 struct usb_serial_port *port = tty->driver_data; 1352 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1353 unsigned int num_chars; 1354 unsigned long flags; 1355 1356 spin_lock_irqsave(&edge_port->ep_lock, flags); 1357 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1358 edge_port->txfifo.count; 1359 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1360 if (num_chars) { 1361 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars); 1362 } 1363 1364 return num_chars; 1365} 1366 1367 1368/***************************************************************************** 1369 * SerialThrottle 1370 * this function is called by the tty driver when it wants to stop the data 1371 * being read from the port. 1372 *****************************************************************************/ 1373static void edge_throttle(struct tty_struct *tty) 1374{ 1375 struct usb_serial_port *port = tty->driver_data; 1376 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1377 int status; 1378 1379 if (edge_port == NULL) 1380 return; 1381 1382 if (!edge_port->open) { 1383 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1384 return; 1385 } 1386 1387 /* if we are implementing XON/XOFF, send the stop character */ 1388 if (I_IXOFF(tty)) { 1389 unsigned char stop_char = STOP_CHAR(tty); 1390 status = edge_write(tty, port, &stop_char, 1); 1391 if (status <= 0) 1392 return; 1393 } 1394 1395 /* if we are implementing RTS/CTS, toggle that line */ 1396 if (C_CRTSCTS(tty)) { 1397 edge_port->shadowMCR &= ~MCR_RTS; 1398 status = send_cmd_write_uart_register(edge_port, MCR, 1399 edge_port->shadowMCR); 1400 if (status != 0) 1401 return; 1402 } 1403} 1404 1405 1406/***************************************************************************** 1407 * edge_unthrottle 1408 * this function is called by the tty driver when it wants to resume the 1409 * data being read from the port (called after SerialThrottle is called) 1410 *****************************************************************************/ 1411static void edge_unthrottle(struct tty_struct *tty) 1412{ 1413 struct usb_serial_port *port = tty->driver_data; 1414 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1415 int status; 1416 1417 if (edge_port == NULL) 1418 return; 1419 1420 if (!edge_port->open) { 1421 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1422 return; 1423 } 1424 1425 /* if we are implementing XON/XOFF, send the start character */ 1426 if (I_IXOFF(tty)) { 1427 unsigned char start_char = START_CHAR(tty); 1428 status = edge_write(tty, port, &start_char, 1); 1429 if (status <= 0) 1430 return; 1431 } 1432 /* if we are implementing RTS/CTS, toggle that line */ 1433 if (C_CRTSCTS(tty)) { 1434 edge_port->shadowMCR |= MCR_RTS; 1435 send_cmd_write_uart_register(edge_port, MCR, 1436 edge_port->shadowMCR); 1437 } 1438} 1439 1440 1441/***************************************************************************** 1442 * SerialSetTermios 1443 * this function is called by the tty driver when it wants to change 1444 * the termios structure 1445 *****************************************************************************/ 1446static void edge_set_termios(struct tty_struct *tty, 1447 struct usb_serial_port *port, 1448 const struct ktermios *old_termios) 1449{ 1450 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1451 1452 if (edge_port == NULL) 1453 return; 1454 1455 if (!edge_port->open) { 1456 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1457 return; 1458 } 1459 1460 /* change the port settings to the new ones specified */ 1461 change_port_settings(tty, edge_port, old_termios); 1462} 1463 1464 1465/***************************************************************************** 1466 * get_lsr_info - get line status register info 1467 * 1468 * Purpose: Let user call ioctl() to get info when the UART physically 1469 * is emptied. On bus types like RS485, the transmitter must 1470 * release the bus after transmitting. This must be done when 1471 * the transmit shift register is empty, not be done when the 1472 * transmit holding register is empty. This functionality 1473 * allows an RS485 driver to be written in user space. 1474 *****************************************************************************/ 1475static int get_lsr_info(struct edgeport_port *edge_port, 1476 unsigned int __user *value) 1477{ 1478 unsigned int result = 0; 1479 unsigned long flags; 1480 1481 spin_lock_irqsave(&edge_port->ep_lock, flags); 1482 if (edge_port->maxTxCredits == edge_port->txCredits && 1483 edge_port->txfifo.count == 0) { 1484 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1485 result = TIOCSER_TEMT; 1486 } 1487 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1488 1489 if (copy_to_user(value, &result, sizeof(int))) 1490 return -EFAULT; 1491 return 0; 1492} 1493 1494static int edge_tiocmset(struct tty_struct *tty, 1495 unsigned int set, unsigned int clear) 1496{ 1497 struct usb_serial_port *port = tty->driver_data; 1498 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1499 unsigned int mcr; 1500 1501 mcr = edge_port->shadowMCR; 1502 if (set & TIOCM_RTS) 1503 mcr |= MCR_RTS; 1504 if (set & TIOCM_DTR) 1505 mcr |= MCR_DTR; 1506 if (set & TIOCM_LOOP) 1507 mcr |= MCR_LOOPBACK; 1508 1509 if (clear & TIOCM_RTS) 1510 mcr &= ~MCR_RTS; 1511 if (clear & TIOCM_DTR) 1512 mcr &= ~MCR_DTR; 1513 if (clear & TIOCM_LOOP) 1514 mcr &= ~MCR_LOOPBACK; 1515 1516 edge_port->shadowMCR = mcr; 1517 1518 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1519 1520 return 0; 1521} 1522 1523static int edge_tiocmget(struct tty_struct *tty) 1524{ 1525 struct usb_serial_port *port = tty->driver_data; 1526 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1527 unsigned int result = 0; 1528 unsigned int msr; 1529 unsigned int mcr; 1530 1531 msr = edge_port->shadowMSR; 1532 mcr = edge_port->shadowMCR; 1533 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1534 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1535 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1536 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1537 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1538 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1539 1540 return result; 1541} 1542 1543/***************************************************************************** 1544 * SerialIoctl 1545 * this function handles any ioctl calls to the driver 1546 *****************************************************************************/ 1547static int edge_ioctl(struct tty_struct *tty, 1548 unsigned int cmd, unsigned long arg) 1549{ 1550 struct usb_serial_port *port = tty->driver_data; 1551 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1552 1553 switch (cmd) { 1554 case TIOCSERGETLSR: 1555 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1556 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1557 } 1558 return -ENOIOCTLCMD; 1559} 1560 1561 1562/***************************************************************************** 1563 * SerialBreak 1564 * this function sends a break to the port 1565 *****************************************************************************/ 1566static int edge_break(struct tty_struct *tty, int break_state) 1567{ 1568 struct usb_serial_port *port = tty->driver_data; 1569 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1570 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1571 int status = 0; 1572 1573 if (!edge_serial->is_epic || 1574 edge_serial->epic_descriptor.Supports.IOSPChase) { 1575 /* flush and chase */ 1576 edge_port->chaseResponsePending = true; 1577 1578 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1579 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1580 if (status == 0) { 1581 /* block until chase finished */ 1582 block_until_chase_response(edge_port); 1583 } else { 1584 edge_port->chaseResponsePending = false; 1585 } 1586 } 1587 1588 if (!edge_serial->is_epic || 1589 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1590 if (break_state == -1) { 1591 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1592 status = send_iosp_ext_cmd(edge_port, 1593 IOSP_CMD_SET_BREAK, 0); 1594 } else { 1595 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1596 status = send_iosp_ext_cmd(edge_port, 1597 IOSP_CMD_CLEAR_BREAK, 0); 1598 } 1599 if (status) 1600 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1601 __func__); 1602 } 1603 1604 return status; 1605} 1606 1607 1608/***************************************************************************** 1609 * process_rcvd_data 1610 * this function handles the data received on the bulk in pipe. 1611 *****************************************************************************/ 1612static void process_rcvd_data(struct edgeport_serial *edge_serial, 1613 unsigned char *buffer, __u16 bufferLength) 1614{ 1615 struct usb_serial *serial = edge_serial->serial; 1616 struct device *dev = &serial->dev->dev; 1617 struct usb_serial_port *port; 1618 struct edgeport_port *edge_port; 1619 __u16 lastBufferLength; 1620 __u16 rxLen; 1621 1622 lastBufferLength = bufferLength + 1; 1623 1624 while (bufferLength > 0) { 1625 /* failsafe incase we get a message that we don't understand */ 1626 if (lastBufferLength == bufferLength) { 1627 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1628 break; 1629 } 1630 lastBufferLength = bufferLength; 1631 1632 switch (edge_serial->rxState) { 1633 case EXPECT_HDR1: 1634 edge_serial->rxHeader1 = *buffer; 1635 ++buffer; 1636 --bufferLength; 1637 1638 if (bufferLength == 0) { 1639 edge_serial->rxState = EXPECT_HDR2; 1640 break; 1641 } 1642 fallthrough; 1643 case EXPECT_HDR2: 1644 edge_serial->rxHeader2 = *buffer; 1645 ++buffer; 1646 --bufferLength; 1647 1648 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1649 edge_serial->rxHeader1, edge_serial->rxHeader2); 1650 /* Process depending on whether this header is 1651 * data or status */ 1652 1653 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1654 /* Decode this status header and go to 1655 * EXPECT_HDR1 (if we can process the status 1656 * with only 2 bytes), or go to EXPECT_HDR3 to 1657 * get the third byte. */ 1658 edge_serial->rxPort = 1659 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1660 edge_serial->rxStatusCode = 1661 IOSP_GET_STATUS_CODE( 1662 edge_serial->rxHeader1); 1663 1664 if (!IOSP_STATUS_IS_2BYTE( 1665 edge_serial->rxStatusCode)) { 1666 /* This status needs additional bytes. 1667 * Save what we have and then wait for 1668 * more data. 1669 */ 1670 edge_serial->rxStatusParam 1671 = edge_serial->rxHeader2; 1672 edge_serial->rxState = EXPECT_HDR3; 1673 break; 1674 } 1675 /* We have all the header bytes, process the 1676 status now */ 1677 process_rcvd_status(edge_serial, 1678 edge_serial->rxHeader2, 0); 1679 edge_serial->rxState = EXPECT_HDR1; 1680 break; 1681 } 1682 1683 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1684 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, 1685 edge_serial->rxHeader2); 1686 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, 1687 edge_serial->rxPort, 1688 edge_serial->rxBytesRemaining); 1689 1690 if (bufferLength == 0) { 1691 edge_serial->rxState = EXPECT_DATA; 1692 break; 1693 } 1694 fallthrough; 1695 case EXPECT_DATA: /* Expect data */ 1696 if (bufferLength < edge_serial->rxBytesRemaining) { 1697 rxLen = bufferLength; 1698 /* Expect data to start next buffer */ 1699 edge_serial->rxState = EXPECT_DATA; 1700 } else { 1701 /* BufLen >= RxBytesRemaining */ 1702 rxLen = edge_serial->rxBytesRemaining; 1703 /* Start another header next time */ 1704 edge_serial->rxState = EXPECT_HDR1; 1705 } 1706 1707 bufferLength -= rxLen; 1708 edge_serial->rxBytesRemaining -= rxLen; 1709 1710 /* spit this data back into the tty driver if this 1711 port is open */ 1712 if (rxLen && edge_serial->rxPort < serial->num_ports) { 1713 port = serial->port[edge_serial->rxPort]; 1714 edge_port = usb_get_serial_port_data(port); 1715 if (edge_port && edge_port->open) { 1716 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1717 __func__, rxLen, 1718 edge_serial->rxPort); 1719 edge_tty_recv(edge_port->port, buffer, 1720 rxLen); 1721 edge_port->port->icount.rx += rxLen; 1722 } 1723 } 1724 buffer += rxLen; 1725 break; 1726 1727 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1728 edge_serial->rxHeader3 = *buffer; 1729 ++buffer; 1730 --bufferLength; 1731 1732 /* We have all the header bytes, process the 1733 status now */ 1734 process_rcvd_status(edge_serial, 1735 edge_serial->rxStatusParam, 1736 edge_serial->rxHeader3); 1737 edge_serial->rxState = EXPECT_HDR1; 1738 break; 1739 } 1740 } 1741} 1742 1743 1744/***************************************************************************** 1745 * process_rcvd_status 1746 * this function handles the any status messages received on the 1747 * bulk in pipe. 1748 *****************************************************************************/ 1749static void process_rcvd_status(struct edgeport_serial *edge_serial, 1750 __u8 byte2, __u8 byte3) 1751{ 1752 struct usb_serial_port *port; 1753 struct edgeport_port *edge_port; 1754 struct tty_struct *tty; 1755 struct device *dev; 1756 __u8 code = edge_serial->rxStatusCode; 1757 1758 /* switch the port pointer to the one being currently talked about */ 1759 if (edge_serial->rxPort >= edge_serial->serial->num_ports) 1760 return; 1761 port = edge_serial->serial->port[edge_serial->rxPort]; 1762 edge_port = usb_get_serial_port_data(port); 1763 if (edge_port == NULL) { 1764 dev_err(&edge_serial->serial->dev->dev, 1765 "%s - edge_port == NULL for port %d\n", 1766 __func__, edge_serial->rxPort); 1767 return; 1768 } 1769 dev = &port->dev; 1770 1771 if (code == IOSP_EXT_STATUS) { 1772 switch (byte2) { 1773 case IOSP_EXT_STATUS_CHASE_RSP: 1774 /* we want to do EXT status regardless of port 1775 * open/closed */ 1776 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1777 __func__, edge_serial->rxPort, byte3); 1778 /* Currently, the only EXT_STATUS is Chase, so process 1779 * here instead of one more call to one more subroutine 1780 * If/when more EXT_STATUS, there'll be more work to do 1781 * Also, we currently clear flag and close the port 1782 * regardless of content of above's Byte3. 1783 * We could choose to do something else when Byte3 says 1784 * Timeout on Chase from Edgeport, like wait longer in 1785 * block_until_chase_response, but for now we don't. 1786 */ 1787 edge_port->chaseResponsePending = false; 1788 wake_up(&edge_port->wait_chase); 1789 return; 1790 1791 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1792 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1793 __func__, edge_serial->rxPort, byte3); 1794 /* Port->RxCheckRsp = true; */ 1795 return; 1796 } 1797 } 1798 1799 if (code == IOSP_STATUS_OPEN_RSP) { 1800 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1801 edge_port->maxTxCredits = edge_port->txCredits; 1802 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1803 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1804 handle_new_msr(edge_port, byte2); 1805 1806 /* send the current line settings to the port so we are 1807 in sync with any further termios calls */ 1808 tty = tty_port_tty_get(&edge_port->port->port); 1809 if (tty) { 1810 change_port_settings(tty, 1811 edge_port, &tty->termios); 1812 tty_kref_put(tty); 1813 } 1814 1815 /* we have completed the open */ 1816 edge_port->openPending = false; 1817 edge_port->open = true; 1818 wake_up(&edge_port->wait_open); 1819 return; 1820 } 1821 1822 /* If port is closed, silently discard all rcvd status. We can 1823 * have cases where buffered status is received AFTER the close 1824 * port command is sent to the Edgeport. 1825 */ 1826 if (!edge_port->open || edge_port->closePending) 1827 return; 1828 1829 switch (code) { 1830 /* Not currently sent by Edgeport */ 1831 case IOSP_STATUS_LSR: 1832 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1833 __func__, edge_serial->rxPort, byte2); 1834 handle_new_lsr(edge_port, false, byte2, 0); 1835 break; 1836 1837 case IOSP_STATUS_LSR_DATA: 1838 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1839 __func__, edge_serial->rxPort, byte2, byte3); 1840 /* byte2 is LSR Register */ 1841 /* byte3 is broken data byte */ 1842 handle_new_lsr(edge_port, true, byte2, byte3); 1843 break; 1844 /* 1845 * case IOSP_EXT_4_STATUS: 1846 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1847 * __func__, edge_serial->rxPort, byte2, byte3); 1848 * break; 1849 */ 1850 case IOSP_STATUS_MSR: 1851 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1852 __func__, edge_serial->rxPort, byte2); 1853 /* 1854 * Process this new modem status and generate appropriate 1855 * events, etc, based on the new status. This routine 1856 * also saves the MSR in Port->ShadowMsr. 1857 */ 1858 handle_new_msr(edge_port, byte2); 1859 break; 1860 1861 default: 1862 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1863 break; 1864 } 1865} 1866 1867 1868/***************************************************************************** 1869 * edge_tty_recv 1870 * this function passes data on to the tty flip buffer 1871 *****************************************************************************/ 1872static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1873 int length) 1874{ 1875 int cnt; 1876 1877 cnt = tty_insert_flip_string(&port->port, data, length); 1878 if (cnt < length) { 1879 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1880 __func__, length - cnt); 1881 } 1882 data += cnt; 1883 length -= cnt; 1884 1885 tty_flip_buffer_push(&port->port); 1886} 1887 1888 1889/***************************************************************************** 1890 * handle_new_msr 1891 * this function handles any change to the msr register for a port. 1892 *****************************************************************************/ 1893static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 1894{ 1895 struct async_icount *icount; 1896 1897 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1898 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1899 icount = &edge_port->port->icount; 1900 1901 /* update input line counters */ 1902 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 1903 icount->cts++; 1904 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 1905 icount->dsr++; 1906 if (newMsr & EDGEPORT_MSR_DELTA_CD) 1907 icount->dcd++; 1908 if (newMsr & EDGEPORT_MSR_DELTA_RI) 1909 icount->rng++; 1910 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1911 } 1912 1913 /* Save the new modem status */ 1914 edge_port->shadowMSR = newMsr & 0xf0; 1915} 1916 1917 1918/***************************************************************************** 1919 * handle_new_lsr 1920 * this function handles any change to the lsr register for a port. 1921 *****************************************************************************/ 1922static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 1923 __u8 lsr, __u8 data) 1924{ 1925 __u8 newLsr = (__u8) (lsr & (__u8) 1926 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 1927 struct async_icount *icount; 1928 1929 edge_port->shadowLSR = lsr; 1930 1931 if (newLsr & LSR_BREAK) { 1932 /* 1933 * Parity and Framing errors only count if they 1934 * occur exclusive of a break being 1935 * received. 1936 */ 1937 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1938 } 1939 1940 /* Place LSR data byte into Rx buffer */ 1941 if (lsrData) 1942 edge_tty_recv(edge_port->port, &data, 1); 1943 1944 /* update input line counters */ 1945 icount = &edge_port->port->icount; 1946 if (newLsr & LSR_BREAK) 1947 icount->brk++; 1948 if (newLsr & LSR_OVER_ERR) 1949 icount->overrun++; 1950 if (newLsr & LSR_PAR_ERR) 1951 icount->parity++; 1952 if (newLsr & LSR_FRM_ERR) 1953 icount->frame++; 1954} 1955 1956 1957/**************************************************************************** 1958 * sram_write 1959 * writes a number of bytes to the Edgeport device's sram starting at the 1960 * given address. 1961 * If successful returns the number of bytes written, otherwise it returns 1962 * a negative error number of the problem. 1963 ****************************************************************************/ 1964static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 1965 __u16 length, const __u8 *data) 1966{ 1967 int result; 1968 __u16 current_length; 1969 unsigned char *transfer_buffer; 1970 1971 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 1972 1973 transfer_buffer = kmalloc(64, GFP_KERNEL); 1974 if (!transfer_buffer) 1975 return -ENOMEM; 1976 1977 /* need to split these writes up into 64 byte chunks */ 1978 result = 0; 1979 while (length > 0) { 1980 if (length > 64) 1981 current_length = 64; 1982 else 1983 current_length = length; 1984 1985/* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 1986 memcpy(transfer_buffer, data, current_length); 1987 result = usb_control_msg(serial->dev, 1988 usb_sndctrlpipe(serial->dev, 0), 1989 USB_REQUEST_ION_WRITE_RAM, 1990 0x40, addr, extAddr, transfer_buffer, 1991 current_length, 300); 1992 if (result < 0) 1993 break; 1994 length -= current_length; 1995 addr += current_length; 1996 data += current_length; 1997 } 1998 1999 kfree(transfer_buffer); 2000 return result; 2001} 2002 2003 2004/**************************************************************************** 2005 * rom_write 2006 * writes a number of bytes to the Edgeport device's ROM starting at the 2007 * given address. 2008 * If successful returns the number of bytes written, otherwise it returns 2009 * a negative error number of the problem. 2010 ****************************************************************************/ 2011static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2012 __u16 length, const __u8 *data) 2013{ 2014 int result; 2015 __u16 current_length; 2016 unsigned char *transfer_buffer; 2017 2018 transfer_buffer = kmalloc(64, GFP_KERNEL); 2019 if (!transfer_buffer) 2020 return -ENOMEM; 2021 2022 /* need to split these writes up into 64 byte chunks */ 2023 result = 0; 2024 while (length > 0) { 2025 if (length > 64) 2026 current_length = 64; 2027 else 2028 current_length = length; 2029 memcpy(transfer_buffer, data, current_length); 2030 result = usb_control_msg(serial->dev, 2031 usb_sndctrlpipe(serial->dev, 0), 2032 USB_REQUEST_ION_WRITE_ROM, 0x40, 2033 addr, extAddr, 2034 transfer_buffer, current_length, 300); 2035 if (result < 0) 2036 break; 2037 length -= current_length; 2038 addr += current_length; 2039 data += current_length; 2040 } 2041 2042 kfree(transfer_buffer); 2043 return result; 2044} 2045 2046 2047/**************************************************************************** 2048 * rom_read 2049 * reads a number of bytes from the Edgeport device starting at the given 2050 * address. 2051 * Returns zero on success or a negative error number. 2052 ****************************************************************************/ 2053static int rom_read(struct usb_serial *serial, __u16 extAddr, 2054 __u16 addr, __u16 length, __u8 *data) 2055{ 2056 int result; 2057 __u16 current_length; 2058 unsigned char *transfer_buffer; 2059 2060 transfer_buffer = kmalloc(64, GFP_KERNEL); 2061 if (!transfer_buffer) 2062 return -ENOMEM; 2063 2064 /* need to split these reads up into 64 byte chunks */ 2065 result = 0; 2066 while (length > 0) { 2067 if (length > 64) 2068 current_length = 64; 2069 else 2070 current_length = length; 2071 result = usb_control_msg(serial->dev, 2072 usb_rcvctrlpipe(serial->dev, 0), 2073 USB_REQUEST_ION_READ_ROM, 2074 0xC0, addr, extAddr, transfer_buffer, 2075 current_length, 300); 2076 if (result < current_length) { 2077 if (result >= 0) 2078 result = -EIO; 2079 break; 2080 } 2081 memcpy(data, transfer_buffer, current_length); 2082 length -= current_length; 2083 addr += current_length; 2084 data += current_length; 2085 2086 result = 0; 2087 } 2088 2089 kfree(transfer_buffer); 2090 return result; 2091} 2092 2093 2094/**************************************************************************** 2095 * send_iosp_ext_cmd 2096 * Is used to send a IOSP message to the Edgeport device 2097 ****************************************************************************/ 2098static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2099 __u8 command, __u8 param) 2100{ 2101 unsigned char *buffer; 2102 unsigned char *currentCommand; 2103 int length = 0; 2104 int status = 0; 2105 2106 buffer = kmalloc(10, GFP_ATOMIC); 2107 if (!buffer) 2108 return -ENOMEM; 2109 2110 currentCommand = buffer; 2111 2112 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2113 command, param); 2114 2115 status = write_cmd_usb(edge_port, buffer, length); 2116 if (status) { 2117 /* something bad happened, let's free up the memory */ 2118 kfree(buffer); 2119 } 2120 2121 return status; 2122} 2123 2124 2125/***************************************************************************** 2126 * write_cmd_usb 2127 * this function writes the given buffer out to the bulk write endpoint. 2128 *****************************************************************************/ 2129static int write_cmd_usb(struct edgeport_port *edge_port, 2130 unsigned char *buffer, int length) 2131{ 2132 struct edgeport_serial *edge_serial = 2133 usb_get_serial_data(edge_port->port->serial); 2134 struct device *dev = &edge_port->port->dev; 2135 int status = 0; 2136 struct urb *urb; 2137 2138 usb_serial_debug_data(dev, __func__, length, buffer); 2139 2140 /* Allocate our next urb */ 2141 urb = usb_alloc_urb(0, GFP_ATOMIC); 2142 if (!urb) 2143 return -ENOMEM; 2144 2145 atomic_inc(&CmdUrbs); 2146 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2147 __func__, urb, atomic_read(&CmdUrbs)); 2148 2149 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2150 usb_sndbulkpipe(edge_serial->serial->dev, 2151 edge_serial->bulk_out_endpoint), 2152 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2153 2154 edge_port->commandPending = true; 2155 status = usb_submit_urb(urb, GFP_ATOMIC); 2156 2157 if (status) { 2158 /* something went wrong */ 2159 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2160 __func__, status); 2161 usb_free_urb(urb); 2162 atomic_dec(&CmdUrbs); 2163 return status; 2164 } 2165 2166#if 0 2167 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2168 2169 if (edge_port->commandPending) { 2170 /* command timed out */ 2171 dev_dbg(dev, "%s - command timed out\n", __func__); 2172 status = -EINVAL; 2173 } 2174#endif 2175 return status; 2176} 2177 2178 2179/***************************************************************************** 2180 * send_cmd_write_baud_rate 2181 * this function sends the proper command to change the baud rate of the 2182 * specified port. 2183 *****************************************************************************/ 2184static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2185 int baudRate) 2186{ 2187 struct edgeport_serial *edge_serial = 2188 usb_get_serial_data(edge_port->port->serial); 2189 struct device *dev = &edge_port->port->dev; 2190 unsigned char *cmdBuffer; 2191 unsigned char *currCmd; 2192 int cmdLen = 0; 2193 int divisor; 2194 int status; 2195 u32 number = edge_port->port->port_number; 2196 2197 if (edge_serial->is_epic && 2198 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2199 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2200 baudRate); 2201 return 0; 2202 } 2203 2204 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2205 2206 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2207 if (status) { 2208 dev_err(dev, "%s - bad baud rate\n", __func__); 2209 return status; 2210 } 2211 2212 /* Alloc memory for the string of commands. */ 2213 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2214 if (!cmdBuffer) 2215 return -ENOMEM; 2216 2217 currCmd = cmdBuffer; 2218 2219 /* Enable access to divisor latch */ 2220 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2221 2222 /* Write the divisor itself */ 2223 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2224 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2225 2226 /* Restore original value to disable access to divisor latch */ 2227 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2228 edge_port->shadowLCR); 2229 2230 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2231 if (status) { 2232 /* something bad happened, let's free up the memory */ 2233 kfree(cmdBuffer); 2234 } 2235 2236 return status; 2237} 2238 2239 2240/***************************************************************************** 2241 * calc_baud_rate_divisor 2242 * this function calculates the proper baud rate divisor for the specified 2243 * baud rate. 2244 *****************************************************************************/ 2245static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2246{ 2247 int i; 2248 __u16 custom; 2249 2250 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2251 if (divisor_table[i].BaudRate == baudrate) { 2252 *divisor = divisor_table[i].Divisor; 2253 return 0; 2254 } 2255 } 2256 2257 /* We have tried all of the standard baud rates 2258 * lets try to calculate the divisor for this baud rate 2259 * Make sure the baud rate is reasonable */ 2260 if (baudrate > 50 && baudrate < 230400) { 2261 /* get divisor */ 2262 custom = (__u16)((230400L + baudrate/2) / baudrate); 2263 2264 *divisor = custom; 2265 2266 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2267 return 0; 2268 } 2269 2270 return -1; 2271} 2272 2273 2274/***************************************************************************** 2275 * send_cmd_write_uart_register 2276 * this function builds up a uart register message and sends to the device. 2277 *****************************************************************************/ 2278static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2279 __u8 regNum, __u8 regValue) 2280{ 2281 struct edgeport_serial *edge_serial = 2282 usb_get_serial_data(edge_port->port->serial); 2283 struct device *dev = &edge_port->port->dev; 2284 unsigned char *cmdBuffer; 2285 unsigned char *currCmd; 2286 unsigned long cmdLen = 0; 2287 int status; 2288 2289 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2290 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2291 2292 if (edge_serial->is_epic && 2293 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2294 regNum == MCR) { 2295 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2296 return 0; 2297 } 2298 2299 if (edge_serial->is_epic && 2300 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2301 regNum == LCR) { 2302 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2303 return 0; 2304 } 2305 2306 /* Alloc memory for the string of commands. */ 2307 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2308 if (cmdBuffer == NULL) 2309 return -ENOMEM; 2310 2311 currCmd = cmdBuffer; 2312 2313 /* Build a cmd in the buffer to write the given register */ 2314 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2315 regNum, regValue); 2316 2317 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2318 if (status) { 2319 /* something bad happened, let's free up the memory */ 2320 kfree(cmdBuffer); 2321 } 2322 2323 return status; 2324} 2325 2326 2327/***************************************************************************** 2328 * change_port_settings 2329 * This routine is called to set the UART on the device to match the 2330 * specified new settings. 2331 *****************************************************************************/ 2332 2333static void change_port_settings(struct tty_struct *tty, 2334 struct edgeport_port *edge_port, const struct ktermios *old_termios) 2335{ 2336 struct device *dev = &edge_port->port->dev; 2337 struct edgeport_serial *edge_serial = 2338 usb_get_serial_data(edge_port->port->serial); 2339 int baud; 2340 unsigned cflag; 2341 __u8 mask = 0xff; 2342 __u8 lData; 2343 __u8 lParity; 2344 __u8 lStop; 2345 __u8 rxFlow; 2346 __u8 txFlow; 2347 int status; 2348 2349 if (!edge_port->open && 2350 !edge_port->openPending) { 2351 dev_dbg(dev, "%s - port not opened\n", __func__); 2352 return; 2353 } 2354 2355 cflag = tty->termios.c_cflag; 2356 2357 switch (cflag & CSIZE) { 2358 case CS5: 2359 lData = LCR_BITS_5; mask = 0x1f; 2360 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2361 break; 2362 case CS6: 2363 lData = LCR_BITS_6; mask = 0x3f; 2364 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2365 break; 2366 case CS7: 2367 lData = LCR_BITS_7; mask = 0x7f; 2368 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2369 break; 2370 default: 2371 case CS8: 2372 lData = LCR_BITS_8; 2373 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2374 break; 2375 } 2376 2377 lParity = LCR_PAR_NONE; 2378 if (cflag & PARENB) { 2379 if (cflag & CMSPAR) { 2380 if (cflag & PARODD) { 2381 lParity = LCR_PAR_MARK; 2382 dev_dbg(dev, "%s - parity = mark\n", __func__); 2383 } else { 2384 lParity = LCR_PAR_SPACE; 2385 dev_dbg(dev, "%s - parity = space\n", __func__); 2386 } 2387 } else if (cflag & PARODD) { 2388 lParity = LCR_PAR_ODD; 2389 dev_dbg(dev, "%s - parity = odd\n", __func__); 2390 } else { 2391 lParity = LCR_PAR_EVEN; 2392 dev_dbg(dev, "%s - parity = even\n", __func__); 2393 } 2394 } else { 2395 dev_dbg(dev, "%s - parity = none\n", __func__); 2396 } 2397 2398 if (cflag & CSTOPB) { 2399 lStop = LCR_STOP_2; 2400 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2401 } else { 2402 lStop = LCR_STOP_1; 2403 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2404 } 2405 2406 /* figure out the flow control settings */ 2407 rxFlow = txFlow = 0x00; 2408 if (cflag & CRTSCTS) { 2409 rxFlow |= IOSP_RX_FLOW_RTS; 2410 txFlow |= IOSP_TX_FLOW_CTS; 2411 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2412 } else { 2413 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2414 } 2415 2416 /* if we are implementing XON/XOFF, set the start and stop character 2417 in the device */ 2418 if (I_IXOFF(tty) || I_IXON(tty)) { 2419 unsigned char stop_char = STOP_CHAR(tty); 2420 unsigned char start_char = START_CHAR(tty); 2421 2422 if (!edge_serial->is_epic || 2423 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2424 send_iosp_ext_cmd(edge_port, 2425 IOSP_CMD_SET_XON_CHAR, start_char); 2426 send_iosp_ext_cmd(edge_port, 2427 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2428 } 2429 2430 /* if we are implementing INBOUND XON/XOFF */ 2431 if (I_IXOFF(tty)) { 2432 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2433 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2434 __func__, start_char, stop_char); 2435 } else { 2436 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2437 } 2438 2439 /* if we are implementing OUTBOUND XON/XOFF */ 2440 if (I_IXON(tty)) { 2441 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2442 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2443 __func__, start_char, stop_char); 2444 } else { 2445 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2446 } 2447 } 2448 2449 /* Set flow control to the configured value */ 2450 if (!edge_serial->is_epic || 2451 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2452 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2453 if (!edge_serial->is_epic || 2454 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2455 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2456 2457 2458 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2459 edge_port->shadowLCR |= (lData | lParity | lStop); 2460 2461 edge_port->validDataMask = mask; 2462 2463 /* Send the updated LCR value to the EdgePort */ 2464 status = send_cmd_write_uart_register(edge_port, LCR, 2465 edge_port->shadowLCR); 2466 if (status != 0) 2467 return; 2468 2469 /* set up the MCR register and send it to the EdgePort */ 2470 edge_port->shadowMCR = MCR_MASTER_IE; 2471 if (cflag & CBAUD) 2472 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2473 2474 status = send_cmd_write_uart_register(edge_port, MCR, 2475 edge_port->shadowMCR); 2476 if (status != 0) 2477 return; 2478 2479 /* Determine divisor based on baud rate */ 2480 baud = tty_get_baud_rate(tty); 2481 if (!baud) { 2482 /* pick a default, any default... */ 2483 baud = 9600; 2484 } 2485 2486 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2487 status = send_cmd_write_baud_rate(edge_port, baud); 2488 if (status == -1) { 2489 /* Speed change was not possible - put back the old speed */ 2490 baud = tty_termios_baud_rate(old_termios); 2491 tty_encode_baud_rate(tty, baud, baud); 2492 } 2493} 2494 2495 2496/**************************************************************************** 2497 * unicode_to_ascii 2498 * Turns a string from Unicode into ASCII. 2499 * Doesn't do a good job with any characters that are outside the normal 2500 * ASCII range, but it's only for debugging... 2501 * NOTE: expects the unicode in LE format 2502 ****************************************************************************/ 2503static void unicode_to_ascii(char *string, int buflen, 2504 __le16 *unicode, int unicode_size) 2505{ 2506 int i; 2507 2508 if (buflen <= 0) /* never happens, but... */ 2509 return; 2510 --buflen; /* space for nul */ 2511 2512 for (i = 0; i < unicode_size; i++) { 2513 if (i >= buflen) 2514 break; 2515 string[i] = (char)(le16_to_cpu(unicode[i])); 2516 } 2517 string[i] = 0x00; 2518} 2519 2520 2521/**************************************************************************** 2522 * get_manufacturing_desc 2523 * reads in the manufacturing descriptor and stores it into the serial 2524 * structure. 2525 ****************************************************************************/ 2526static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2527{ 2528 struct device *dev = &edge_serial->serial->dev->dev; 2529 int response; 2530 2531 dev_dbg(dev, "getting manufacturer descriptor\n"); 2532 2533 response = rom_read(edge_serial->serial, 2534 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2535 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2536 EDGE_MANUF_DESC_LEN, 2537 (__u8 *)(&edge_serial->manuf_descriptor)); 2538 2539 if (response < 0) { 2540 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2541 response); 2542 } else { 2543 char string[30]; 2544 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2545 dev_dbg(dev, " RomSize: %dK\n", 2546 edge_serial->manuf_descriptor.RomSize); 2547 dev_dbg(dev, " RamSize: %dK\n", 2548 edge_serial->manuf_descriptor.RamSize); 2549 dev_dbg(dev, " CpuRev: %d\n", 2550 edge_serial->manuf_descriptor.CpuRev); 2551 dev_dbg(dev, " BoardRev: %d\n", 2552 edge_serial->manuf_descriptor.BoardRev); 2553 dev_dbg(dev, " NumPorts: %d\n", 2554 edge_serial->manuf_descriptor.NumPorts); 2555 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2556 edge_serial->manuf_descriptor.DescDate[0], 2557 edge_serial->manuf_descriptor.DescDate[1], 2558 edge_serial->manuf_descriptor.DescDate[2]+1900); 2559 unicode_to_ascii(string, sizeof(string), 2560 edge_serial->manuf_descriptor.SerialNumber, 2561 edge_serial->manuf_descriptor.SerNumLength/2); 2562 dev_dbg(dev, " SerialNumber: %s\n", string); 2563 unicode_to_ascii(string, sizeof(string), 2564 edge_serial->manuf_descriptor.AssemblyNumber, 2565 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2566 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2567 unicode_to_ascii(string, sizeof(string), 2568 edge_serial->manuf_descriptor.OemAssyNumber, 2569 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2570 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2571 dev_dbg(dev, " UartType: %d\n", 2572 edge_serial->manuf_descriptor.UartType); 2573 dev_dbg(dev, " IonPid: %d\n", 2574 edge_serial->manuf_descriptor.IonPid); 2575 dev_dbg(dev, " IonConfig: %d\n", 2576 edge_serial->manuf_descriptor.IonConfig); 2577 } 2578} 2579 2580 2581/**************************************************************************** 2582 * get_boot_desc 2583 * reads in the bootloader descriptor and stores it into the serial 2584 * structure. 2585 ****************************************************************************/ 2586static void get_boot_desc(struct edgeport_serial *edge_serial) 2587{ 2588 struct device *dev = &edge_serial->serial->dev->dev; 2589 int response; 2590 2591 dev_dbg(dev, "getting boot descriptor\n"); 2592 2593 response = rom_read(edge_serial->serial, 2594 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2595 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2596 EDGE_BOOT_DESC_LEN, 2597 (__u8 *)(&edge_serial->boot_descriptor)); 2598 2599 if (response < 0) { 2600 dev_err(dev, "error in getting boot descriptor: %d\n", 2601 response); 2602 } else { 2603 dev_dbg(dev, "**Boot Descriptor:\n"); 2604 dev_dbg(dev, " BootCodeLength: %d\n", 2605 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2606 dev_dbg(dev, " MajorVersion: %d\n", 2607 edge_serial->boot_descriptor.MajorVersion); 2608 dev_dbg(dev, " MinorVersion: %d\n", 2609 edge_serial->boot_descriptor.MinorVersion); 2610 dev_dbg(dev, " BuildNumber: %d\n", 2611 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2612 dev_dbg(dev, " Capabilities: 0x%x\n", 2613 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2614 dev_dbg(dev, " UConfig0: %d\n", 2615 edge_serial->boot_descriptor.UConfig0); 2616 dev_dbg(dev, " UConfig1: %d\n", 2617 edge_serial->boot_descriptor.UConfig1); 2618 } 2619} 2620 2621 2622/**************************************************************************** 2623 * load_application_firmware 2624 * This is called to load the application firmware to the device 2625 ****************************************************************************/ 2626static void load_application_firmware(struct edgeport_serial *edge_serial) 2627{ 2628 struct device *dev = &edge_serial->serial->dev->dev; 2629 const struct ihex_binrec *rec; 2630 const struct firmware *fw; 2631 const char *fw_name; 2632 const char *fw_info; 2633 int response; 2634 __u32 Operaddr; 2635 __u16 build; 2636 2637 switch (edge_serial->product_info.iDownloadFile) { 2638 case EDGE_DOWNLOAD_FILE_I930: 2639 fw_info = "downloading firmware version (930)"; 2640 fw_name = "edgeport/down.fw"; 2641 break; 2642 2643 case EDGE_DOWNLOAD_FILE_80251: 2644 fw_info = "downloading firmware version (80251)"; 2645 fw_name = "edgeport/down2.fw"; 2646 break; 2647 2648 case EDGE_DOWNLOAD_FILE_NONE: 2649 dev_dbg(dev, "No download file specified, skipping download\n"); 2650 return; 2651 2652 default: 2653 return; 2654 } 2655 2656 response = request_ihex_firmware(&fw, fw_name, 2657 &edge_serial->serial->dev->dev); 2658 if (response) { 2659 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2660 fw_name, response); 2661 return; 2662 } 2663 2664 rec = (const struct ihex_binrec *)fw->data; 2665 build = (rec->data[2] << 8) | rec->data[3]; 2666 2667 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2668 2669 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2670 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2671 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2672 2673 for (rec = ihex_next_binrec(rec); rec; 2674 rec = ihex_next_binrec(rec)) { 2675 Operaddr = be32_to_cpu(rec->addr); 2676 response = sram_write(edge_serial->serial, 2677 Operaddr >> 16, 2678 Operaddr & 0xFFFF, 2679 be16_to_cpu(rec->len), 2680 &rec->data[0]); 2681 if (response < 0) { 2682 dev_err(&edge_serial->serial->dev->dev, 2683 "sram_write failed (%x, %x, %d)\n", 2684 Operaddr >> 16, Operaddr & 0xFFFF, 2685 be16_to_cpu(rec->len)); 2686 break; 2687 } 2688 } 2689 2690 dev_dbg(dev, "sending exec_dl_code\n"); 2691 response = usb_control_msg (edge_serial->serial->dev, 2692 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2693 USB_REQUEST_ION_EXEC_DL_CODE, 2694 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2695 2696 release_firmware(fw); 2697} 2698 2699 2700/**************************************************************************** 2701 * edge_startup 2702 ****************************************************************************/ 2703static int edge_startup(struct usb_serial *serial) 2704{ 2705 struct edgeport_serial *edge_serial; 2706 struct usb_device *dev; 2707 struct device *ddev = &serial->dev->dev; 2708 int i; 2709 int response; 2710 bool interrupt_in_found; 2711 bool bulk_in_found; 2712 bool bulk_out_found; 2713 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2714 EDGE_COMPATIBILITY_MASK1, 2715 EDGE_COMPATIBILITY_MASK2 }; 2716 2717 dev = serial->dev; 2718 2719 /* create our private serial structure */ 2720 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2721 if (!edge_serial) 2722 return -ENOMEM; 2723 2724 spin_lock_init(&edge_serial->es_lock); 2725 edge_serial->serial = serial; 2726 usb_set_serial_data(serial, edge_serial); 2727 2728 /* get the name for the device from the device */ 2729 i = usb_string(dev, dev->descriptor.iManufacturer, 2730 &edge_serial->name[0], MAX_NAME_LEN+1); 2731 if (i < 0) 2732 i = 0; 2733 edge_serial->name[i++] = ' '; 2734 usb_string(dev, dev->descriptor.iProduct, 2735 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2736 2737 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2738 2739 /* Read the epic descriptor */ 2740 if (get_epic_descriptor(edge_serial) < 0) { 2741 /* memcpy descriptor to Supports structures */ 2742 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2743 sizeof(struct edge_compatibility_bits)); 2744 2745 /* get the manufacturing descriptor for this device */ 2746 get_manufacturing_desc(edge_serial); 2747 2748 /* get the boot descriptor */ 2749 get_boot_desc(edge_serial); 2750 2751 get_product_info(edge_serial); 2752 } 2753 2754 /* set the number of ports from the manufacturing description */ 2755 /* serial->num_ports = serial->product_info.NumPorts; */ 2756 if ((!edge_serial->is_epic) && 2757 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2758 dev_warn(ddev, 2759 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2760 edge_serial->product_info.NumPorts, 2761 serial->num_ports); 2762 } 2763 2764 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2765 2766 /* If not an EPiC device */ 2767 if (!edge_serial->is_epic) { 2768 /* now load the application firmware into this device */ 2769 load_application_firmware(edge_serial); 2770 2771 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2772 2773 /* Check current Edgeport EEPROM and update if necessary */ 2774 update_edgeport_E2PROM(edge_serial); 2775 2776 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2777 2778 /* set the configuration to use #1 */ 2779/* dev_dbg(ddev, "set_configuration 1\n"); */ 2780/* usb_set_configuration (dev, 1); */ 2781 } 2782 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2783 edge_serial->product_info.FirmwareMajorVersion, 2784 edge_serial->product_info.FirmwareMinorVersion, 2785 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2786 2787 /* we set up the pointers to the endpoints in the edge_open function, 2788 * as the structures aren't created yet. */ 2789 2790 response = 0; 2791 2792 if (edge_serial->is_epic) { 2793 struct usb_host_interface *alt; 2794 2795 alt = serial->interface->cur_altsetting; 2796 2797 /* EPIC thing, set up our interrupt polling now and our read 2798 * urb, so that the device knows it really is connected. */ 2799 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2800 for (i = 0; i < alt->desc.bNumEndpoints; ++i) { 2801 struct usb_endpoint_descriptor *endpoint; 2802 int buffer_size; 2803 2804 endpoint = &alt->endpoint[i].desc; 2805 buffer_size = usb_endpoint_maxp(endpoint); 2806 if (!interrupt_in_found && 2807 (usb_endpoint_is_int_in(endpoint))) { 2808 /* we found a interrupt in endpoint */ 2809 dev_dbg(ddev, "found interrupt in\n"); 2810 2811 /* not set up yet, so do it now */ 2812 edge_serial->interrupt_read_urb = 2813 usb_alloc_urb(0, GFP_KERNEL); 2814 if (!edge_serial->interrupt_read_urb) { 2815 response = -ENOMEM; 2816 break; 2817 } 2818 2819 edge_serial->interrupt_in_buffer = 2820 kmalloc(buffer_size, GFP_KERNEL); 2821 if (!edge_serial->interrupt_in_buffer) { 2822 response = -ENOMEM; 2823 break; 2824 } 2825 edge_serial->interrupt_in_endpoint = 2826 endpoint->bEndpointAddress; 2827 2828 /* set up our interrupt urb */ 2829 usb_fill_int_urb( 2830 edge_serial->interrupt_read_urb, 2831 dev, 2832 usb_rcvintpipe(dev, 2833 endpoint->bEndpointAddress), 2834 edge_serial->interrupt_in_buffer, 2835 buffer_size, 2836 edge_interrupt_callback, 2837 edge_serial, 2838 endpoint->bInterval); 2839 2840 interrupt_in_found = true; 2841 } 2842 2843 if (!bulk_in_found && 2844 (usb_endpoint_is_bulk_in(endpoint))) { 2845 /* we found a bulk in endpoint */ 2846 dev_dbg(ddev, "found bulk in\n"); 2847 2848 /* not set up yet, so do it now */ 2849 edge_serial->read_urb = 2850 usb_alloc_urb(0, GFP_KERNEL); 2851 if (!edge_serial->read_urb) { 2852 response = -ENOMEM; 2853 break; 2854 } 2855 2856 edge_serial->bulk_in_buffer = 2857 kmalloc(buffer_size, GFP_KERNEL); 2858 if (!edge_serial->bulk_in_buffer) { 2859 response = -ENOMEM; 2860 break; 2861 } 2862 edge_serial->bulk_in_endpoint = 2863 endpoint->bEndpointAddress; 2864 2865 /* set up our bulk in urb */ 2866 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2867 usb_rcvbulkpipe(dev, 2868 endpoint->bEndpointAddress), 2869 edge_serial->bulk_in_buffer, 2870 usb_endpoint_maxp(endpoint), 2871 edge_bulk_in_callback, 2872 edge_serial); 2873 bulk_in_found = true; 2874 } 2875 2876 if (!bulk_out_found && 2877 (usb_endpoint_is_bulk_out(endpoint))) { 2878 /* we found a bulk out endpoint */ 2879 dev_dbg(ddev, "found bulk out\n"); 2880 edge_serial->bulk_out_endpoint = 2881 endpoint->bEndpointAddress; 2882 bulk_out_found = true; 2883 } 2884 } 2885 2886 if (response || !interrupt_in_found || !bulk_in_found || 2887 !bulk_out_found) { 2888 if (!response) { 2889 dev_err(ddev, "expected endpoints not found\n"); 2890 response = -ENODEV; 2891 } 2892 2893 goto error; 2894 } 2895 2896 /* start interrupt read for this edgeport this interrupt will 2897 * continue as long as the edgeport is connected */ 2898 response = usb_submit_urb(edge_serial->interrupt_read_urb, 2899 GFP_KERNEL); 2900 if (response) { 2901 dev_err(ddev, "%s - Error %d submitting control urb\n", 2902 __func__, response); 2903 2904 goto error; 2905 } 2906 } 2907 return response; 2908 2909error: 2910 usb_free_urb(edge_serial->interrupt_read_urb); 2911 kfree(edge_serial->interrupt_in_buffer); 2912 2913 usb_free_urb(edge_serial->read_urb); 2914 kfree(edge_serial->bulk_in_buffer); 2915 2916 kfree(edge_serial); 2917 2918 return response; 2919} 2920 2921 2922/**************************************************************************** 2923 * edge_disconnect 2924 * This function is called whenever the device is removed from the usb bus. 2925 ****************************************************************************/ 2926static void edge_disconnect(struct usb_serial *serial) 2927{ 2928 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2929 2930 if (edge_serial->is_epic) { 2931 usb_kill_urb(edge_serial->interrupt_read_urb); 2932 usb_kill_urb(edge_serial->read_urb); 2933 } 2934} 2935 2936 2937/**************************************************************************** 2938 * edge_release 2939 * This function is called when the device structure is deallocated. 2940 ****************************************************************************/ 2941static void edge_release(struct usb_serial *serial) 2942{ 2943 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2944 2945 if (edge_serial->is_epic) { 2946 usb_kill_urb(edge_serial->interrupt_read_urb); 2947 usb_free_urb(edge_serial->interrupt_read_urb); 2948 kfree(edge_serial->interrupt_in_buffer); 2949 2950 usb_kill_urb(edge_serial->read_urb); 2951 usb_free_urb(edge_serial->read_urb); 2952 kfree(edge_serial->bulk_in_buffer); 2953 } 2954 2955 kfree(edge_serial); 2956} 2957 2958static int edge_port_probe(struct usb_serial_port *port) 2959{ 2960 struct edgeport_port *edge_port; 2961 2962 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 2963 if (!edge_port) 2964 return -ENOMEM; 2965 2966 spin_lock_init(&edge_port->ep_lock); 2967 edge_port->port = port; 2968 2969 usb_set_serial_port_data(port, edge_port); 2970 2971 return 0; 2972} 2973 2974static void edge_port_remove(struct usb_serial_port *port) 2975{ 2976 struct edgeport_port *edge_port; 2977 2978 edge_port = usb_get_serial_port_data(port); 2979 kfree(edge_port); 2980} 2981 2982static struct usb_serial_driver edgeport_2port_device = { 2983 .driver = { 2984 .name = "edgeport_2", 2985 }, 2986 .description = "Edgeport 2 port adapter", 2987 .id_table = edgeport_2port_id_table, 2988 .num_ports = 2, 2989 .num_bulk_in = 1, 2990 .num_bulk_out = 1, 2991 .num_interrupt_in = 1, 2992 .open = edge_open, 2993 .close = edge_close, 2994 .throttle = edge_throttle, 2995 .unthrottle = edge_unthrottle, 2996 .attach = edge_startup, 2997 .disconnect = edge_disconnect, 2998 .release = edge_release, 2999 .port_probe = edge_port_probe, 3000 .port_remove = edge_port_remove, 3001 .ioctl = edge_ioctl, 3002 .set_termios = edge_set_termios, 3003 .tiocmget = edge_tiocmget, 3004 .tiocmset = edge_tiocmset, 3005 .tiocmiwait = usb_serial_generic_tiocmiwait, 3006 .get_icount = usb_serial_generic_get_icount, 3007 .write = edge_write, 3008 .write_room = edge_write_room, 3009 .chars_in_buffer = edge_chars_in_buffer, 3010 .break_ctl = edge_break, 3011 .read_int_callback = edge_interrupt_callback, 3012 .read_bulk_callback = edge_bulk_in_callback, 3013 .write_bulk_callback = edge_bulk_out_data_callback, 3014}; 3015 3016static struct usb_serial_driver edgeport_4port_device = { 3017 .driver = { 3018 .name = "edgeport_4", 3019 }, 3020 .description = "Edgeport 4 port adapter", 3021 .id_table = edgeport_4port_id_table, 3022 .num_ports = 4, 3023 .num_bulk_in = 1, 3024 .num_bulk_out = 1, 3025 .num_interrupt_in = 1, 3026 .open = edge_open, 3027 .close = edge_close, 3028 .throttle = edge_throttle, 3029 .unthrottle = edge_unthrottle, 3030 .attach = edge_startup, 3031 .disconnect = edge_disconnect, 3032 .release = edge_release, 3033 .port_probe = edge_port_probe, 3034 .port_remove = edge_port_remove, 3035 .ioctl = edge_ioctl, 3036 .set_termios = edge_set_termios, 3037 .tiocmget = edge_tiocmget, 3038 .tiocmset = edge_tiocmset, 3039 .tiocmiwait = usb_serial_generic_tiocmiwait, 3040 .get_icount = usb_serial_generic_get_icount, 3041 .write = edge_write, 3042 .write_room = edge_write_room, 3043 .chars_in_buffer = edge_chars_in_buffer, 3044 .break_ctl = edge_break, 3045 .read_int_callback = edge_interrupt_callback, 3046 .read_bulk_callback = edge_bulk_in_callback, 3047 .write_bulk_callback = edge_bulk_out_data_callback, 3048}; 3049 3050static struct usb_serial_driver edgeport_8port_device = { 3051 .driver = { 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 .name = "epic", 3087 }, 3088 .description = "EPiC device", 3089 .id_table = Epic_port_id_table, 3090 .num_ports = 1, 3091 .num_bulk_in = 1, 3092 .num_bulk_out = 1, 3093 .num_interrupt_in = 1, 3094 .open = edge_open, 3095 .close = edge_close, 3096 .throttle = edge_throttle, 3097 .unthrottle = edge_unthrottle, 3098 .attach = edge_startup, 3099 .disconnect = edge_disconnect, 3100 .release = edge_release, 3101 .port_probe = edge_port_probe, 3102 .port_remove = edge_port_remove, 3103 .ioctl = edge_ioctl, 3104 .set_termios = edge_set_termios, 3105 .tiocmget = edge_tiocmget, 3106 .tiocmset = edge_tiocmset, 3107 .tiocmiwait = usb_serial_generic_tiocmiwait, 3108 .get_icount = usb_serial_generic_get_icount, 3109 .write = edge_write, 3110 .write_room = edge_write_room, 3111 .chars_in_buffer = edge_chars_in_buffer, 3112 .break_ctl = edge_break, 3113 .read_int_callback = edge_interrupt_callback, 3114 .read_bulk_callback = edge_bulk_in_callback, 3115 .write_bulk_callback = edge_bulk_out_data_callback, 3116}; 3117 3118static struct usb_serial_driver * const serial_drivers[] = { 3119 &edgeport_2port_device, &edgeport_4port_device, 3120 &edgeport_8port_device, &epic_device, NULL 3121}; 3122 3123module_usb_serial_driver(serial_drivers, id_table_combined); 3124 3125MODULE_AUTHOR(DRIVER_AUTHOR); 3126MODULE_DESCRIPTION(DRIVER_DESC); 3127MODULE_LICENSE("GPL"); 3128MODULE_FIRMWARE("edgeport/boot.fw"); 3129MODULE_FIRMWARE("edgeport/boot2.fw"); 3130MODULE_FIRMWARE("edgeport/down.fw"); 3131MODULE_FIRMWARE("edgeport/down2.fw");
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