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