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/atomic.h> 29 #include <linux/kernel.h> 30 #include <linux/jiffies.h> 31 #include <linux/errno.h> 32 #include <linux/slab.h> 33 #include <linux/tty.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 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) }, 77 { } 78 }; 79 80 static const struct usb_device_id edgeport_8port_id_table[] = { 81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 86 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 87 { } 88 }; 89 90 static const struct usb_device_id Epic_port_id_table[] = { 91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 95 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 98 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 99 { } 100 }; 101 102 /* Devices that this driver supports */ 103 static const struct usb_device_id id_table_combined[] = { 104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_BLACKBOX_IC135A) }, 126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 129 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 130 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 132 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 133 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 134 { } /* Terminating entry */ 135 }; 136 137 MODULE_DEVICE_TABLE(usb, id_table_combined); 138 139 140 /* receive port state */ 141 enum RXSTATE { 142 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 143 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 144 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 145 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 146 }; 147 148 149 /* Transmit Fifo 150 * This Transmit queue is an extension of the edgeport Rx buffer. 151 * The maximum amount of data buffered in both the edgeport 152 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 153 */ 154 struct TxFifo { 155 unsigned int head; /* index to head pointer (write) */ 156 unsigned int tail; /* index to tail pointer (read) */ 157 unsigned int count; /* Bytes in queue */ 158 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 159 unsigned char *fifo; /* allocated Buffer */ 160 }; 161 162 /* This structure holds all of the local port information */ 163 struct edgeport_port { 164 __u16 txCredits; /* our current credits for this port */ 165 __u16 maxTxCredits; /* the max size of the port */ 166 167 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 168 struct urb *write_urb; /* write URB for this port */ 169 bool write_in_progress; /* 'true' while a write URB is outstanding */ 170 spinlock_t ep_lock; 171 172 __u8 shadowLCR; /* last LCR value received */ 173 __u8 shadowMCR; /* last MCR value received */ 174 __u8 shadowMSR; /* last MSR value received */ 175 __u8 shadowLSR; /* last LSR value received */ 176 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 177 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 178 __u8 validDataMask; 179 __u32 baudRate; 180 181 bool open; 182 bool openPending; 183 bool commandPending; 184 bool closePending; 185 bool chaseResponsePending; 186 187 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 188 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 189 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 190 191 struct usb_serial_port *port; /* loop back to the owner of this object */ 192 }; 193 194 195 /* This structure holds all of the individual device information */ 196 struct edgeport_serial { 197 char name[MAX_NAME_LEN+2]; /* string name of this device */ 198 199 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 200 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 201 struct edgeport_product_info product_info; /* Product Info */ 202 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 203 int is_epic; /* flag if EPiC device or not */ 204 205 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 206 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 207 struct urb *interrupt_read_urb; /* our interrupt urb */ 208 209 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 210 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 211 struct urb *read_urb; /* our bulk read urb */ 212 bool read_in_progress; 213 spinlock_t es_lock; 214 215 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 216 217 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 218 219 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 220 __u8 rxHeader1; /* receive header byte 1 */ 221 __u8 rxHeader2; /* receive header byte 2 */ 222 __u8 rxHeader3; /* receive header byte 3 */ 223 __u8 rxPort; /* the port that we are currently receiving data for */ 224 __u8 rxStatusCode; /* the receive status code */ 225 __u8 rxStatusParam; /* the receive status parameter */ 226 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 227 struct usb_serial *serial; /* loop back to the owner of this object */ 228 }; 229 230 /* baud rate information */ 231 struct divisor_table_entry { 232 __u32 BaudRate; 233 __u16 Divisor; 234 }; 235 236 /* 237 * Define table of divisors for Rev A EdgePort/4 hardware 238 * These assume a 3.6864MHz crystal, the standard /16, and 239 * MCR.7 = 0. 240 */ 241 242 static const struct divisor_table_entry divisor_table[] = { 243 { 50, 4608}, 244 { 75, 3072}, 245 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 246 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 247 { 150, 1536}, 248 { 300, 768}, 249 { 600, 384}, 250 { 1200, 192}, 251 { 1800, 128}, 252 { 2400, 96}, 253 { 4800, 48}, 254 { 7200, 32}, 255 { 9600, 24}, 256 { 14400, 16}, 257 { 19200, 12}, 258 { 38400, 6}, 259 { 57600, 4}, 260 { 115200, 2}, 261 { 230400, 1}, 262 }; 263 264 /* Number of outstanding Command Write Urbs */ 265 static atomic_t CmdUrbs = ATOMIC_INIT(0); 266 267 268 /* function prototypes */ 269 270 static void edge_close(struct usb_serial_port *port); 271 272 static void process_rcvd_data(struct edgeport_serial *edge_serial, 273 unsigned char *buffer, __u16 bufferLength); 274 static void process_rcvd_status(struct edgeport_serial *edge_serial, 275 __u8 byte2, __u8 byte3); 276 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 277 int length); 278 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 279 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 280 __u8 lsr, __u8 data); 281 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 282 __u8 param); 283 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 284 static void change_port_settings(struct tty_struct *tty, 285 struct edgeport_port *edge_port, 286 const struct ktermios *old_termios); 287 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 288 __u8 regNum, __u8 regValue); 289 static int write_cmd_usb(struct edgeport_port *edge_port, 290 unsigned char *buffer, int writeLength); 291 static void send_more_port_data(struct edgeport_serial *edge_serial, 292 struct edgeport_port *edge_port); 293 294 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 295 __u16 length, const __u8 *data); 296 297 /* ************************************************************************ */ 298 /* ************************************************************************ */ 299 /* ************************************************************************ */ 300 /* ************************************************************************ */ 301 302 /************************************************************************ 303 * * 304 * update_edgeport_E2PROM() Compare current versions of * 305 * Boot ROM and Manufacture * 306 * Descriptors with versions * 307 * embedded in this driver * 308 * * 309 ************************************************************************/ 310 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 311 { 312 struct device *dev = &edge_serial->serial->dev->dev; 313 __u32 BootCurVer; 314 __u32 BootNewVer; 315 __u8 BootMajorVersion; 316 __u8 BootMinorVersion; 317 __u16 BootBuildNumber; 318 __u32 Bootaddr; 319 const struct ihex_binrec *rec; 320 const struct firmware *fw; 321 const char *fw_name; 322 int response; 323 324 switch (edge_serial->product_info.iDownloadFile) { 325 case EDGE_DOWNLOAD_FILE_I930: 326 fw_name = "edgeport/boot.fw"; 327 break; 328 case EDGE_DOWNLOAD_FILE_80251: 329 fw_name = "edgeport/boot2.fw"; 330 break; 331 default: 332 return; 333 } 334 335 response = request_ihex_firmware(&fw, fw_name, 336 &edge_serial->serial->dev->dev); 337 if (response) { 338 dev_err(dev, "Failed to load image \"%s\" err %d\n", 339 fw_name, response); 340 return; 341 } 342 343 rec = (const struct ihex_binrec *)fw->data; 344 BootMajorVersion = rec->data[0]; 345 BootMinorVersion = rec->data[1]; 346 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 347 348 /* Check Boot Image Version */ 349 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 350 (edge_serial->boot_descriptor.MinorVersion << 16) + 351 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 352 353 BootNewVer = (BootMajorVersion << 24) + 354 (BootMinorVersion << 16) + 355 BootBuildNumber; 356 357 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 358 edge_serial->boot_descriptor.MajorVersion, 359 edge_serial->boot_descriptor.MinorVersion, 360 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 361 362 363 if (BootNewVer > BootCurVer) { 364 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 365 edge_serial->boot_descriptor.MajorVersion, 366 edge_serial->boot_descriptor.MinorVersion, 367 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 368 BootMajorVersion, BootMinorVersion, BootBuildNumber); 369 370 dev_dbg(dev, "Downloading new Boot Image\n"); 371 372 for (rec = ihex_next_binrec(rec); rec; 373 rec = ihex_next_binrec(rec)) { 374 Bootaddr = be32_to_cpu(rec->addr); 375 response = rom_write(edge_serial->serial, 376 Bootaddr >> 16, 377 Bootaddr & 0xFFFF, 378 be16_to_cpu(rec->len), 379 &rec->data[0]); 380 if (response < 0) { 381 dev_err(&edge_serial->serial->dev->dev, 382 "rom_write failed (%x, %x, %d)\n", 383 Bootaddr >> 16, Bootaddr & 0xFFFF, 384 be16_to_cpu(rec->len)); 385 break; 386 } 387 } 388 } else { 389 dev_dbg(dev, "Boot Image -- already up to date\n"); 390 } 391 release_firmware(fw); 392 } 393 394 static void dump_product_info(struct edgeport_serial *edge_serial, 395 struct edgeport_product_info *product_info) 396 { 397 struct device *dev = &edge_serial->serial->dev->dev; 398 399 /* Dump Product Info structure */ 400 dev_dbg(dev, "**Product Information:\n"); 401 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 402 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 403 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 404 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 405 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 406 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 407 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 408 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 409 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 410 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 411 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 412 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 413 product_info->BootMajorVersion, 414 product_info->BootMinorVersion, 415 le16_to_cpu(product_info->BootBuildNumber)); 416 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 417 product_info->FirmwareMajorVersion, 418 product_info->FirmwareMinorVersion, 419 le16_to_cpu(product_info->FirmwareBuildNumber)); 420 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 421 product_info->ManufactureDescDate[0], 422 product_info->ManufactureDescDate[1], 423 product_info->ManufactureDescDate[2]+1900); 424 dev_dbg(dev, " iDownloadFile 0x%x\n", 425 product_info->iDownloadFile); 426 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 427 } 428 429 static void get_product_info(struct edgeport_serial *edge_serial) 430 { 431 struct edgeport_product_info *product_info = &edge_serial->product_info; 432 433 memset(product_info, 0, sizeof(struct edgeport_product_info)); 434 435 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 436 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 437 product_info->ProdInfoVer = 0; 438 439 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 440 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 441 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 442 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 443 444 product_info->BootMajorVersion = 445 edge_serial->boot_descriptor.MajorVersion; 446 product_info->BootMinorVersion = 447 edge_serial->boot_descriptor.MinorVersion; 448 product_info->BootBuildNumber = 449 edge_serial->boot_descriptor.BuildNumber; 450 451 memcpy(product_info->ManufactureDescDate, 452 edge_serial->manuf_descriptor.DescDate, 453 sizeof(edge_serial->manuf_descriptor.DescDate)); 454 455 /* check if this is 2nd generation hardware */ 456 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 457 & ION_DEVICE_ID_80251_NETCHIP) 458 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 459 else 460 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 461 462 /* Determine Product type and set appropriate flags */ 463 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 464 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 465 case ION_DEVICE_ID_EDGEPORT_4T: 466 case ION_DEVICE_ID_EDGEPORT_4: 467 case ION_DEVICE_ID_EDGEPORT_2: 468 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 469 case ION_DEVICE_ID_EDGEPORT_8: 470 case ION_DEVICE_ID_EDGEPORT_421: 471 case ION_DEVICE_ID_EDGEPORT_21: 472 case ION_DEVICE_ID_EDGEPORT_2_DIN: 473 case ION_DEVICE_ID_EDGEPORT_4_DIN: 474 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 475 case ION_DEVICE_ID_BLACKBOX_IC135A: 476 product_info->IsRS232 = 1; 477 break; 478 479 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 480 product_info->IsRS422 = 1; 481 product_info->IsRS485 = 1; 482 break; 483 484 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 485 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 486 product_info->IsRS422 = 1; 487 break; 488 } 489 490 dump_product_info(edge_serial, product_info); 491 } 492 493 static int get_epic_descriptor(struct edgeport_serial *ep) 494 { 495 int result; 496 struct usb_serial *serial = ep->serial; 497 struct edgeport_product_info *product_info = &ep->product_info; 498 struct edge_compatibility_descriptor *epic; 499 struct edge_compatibility_bits *bits; 500 struct device *dev = &serial->dev->dev; 501 502 ep->is_epic = 0; 503 504 epic = kmalloc_obj(*epic); 505 if (!epic) 506 return -ENOMEM; 507 508 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 509 USB_REQUEST_ION_GET_EPIC_DESC, 510 0xC0, 0x00, 0x00, 511 epic, sizeof(*epic), 512 300); 513 if (result == sizeof(*epic)) { 514 ep->is_epic = 1; 515 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 516 memset(product_info, 0, sizeof(struct edgeport_product_info)); 517 518 product_info->NumPorts = epic->NumPorts; 519 product_info->ProdInfoVer = 0; 520 product_info->FirmwareMajorVersion = epic->MajorVersion; 521 product_info->FirmwareMinorVersion = epic->MinorVersion; 522 product_info->FirmwareBuildNumber = epic->BuildNumber; 523 product_info->iDownloadFile = epic->iDownloadFile; 524 product_info->EpicVer = epic->EpicVer; 525 product_info->Epic = epic->Supports; 526 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 527 dump_product_info(ep, product_info); 528 529 bits = &ep->epic_descriptor.Supports; 530 dev_dbg(dev, "**EPIC descriptor:\n"); 531 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 532 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 533 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 534 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 535 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 536 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 537 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 538 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 539 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 540 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 541 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 542 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 543 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 544 545 result = 0; 546 } else if (result >= 0) { 547 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 548 result); 549 result = -EIO; 550 } 551 552 kfree(epic); 553 554 return result; 555 } 556 557 558 /************************************************************************/ 559 /************************************************************************/ 560 /* U S B C A L L B A C K F U N C T I O N S */ 561 /* U S B C A L L B A C K F U N C T I O N S */ 562 /************************************************************************/ 563 /************************************************************************/ 564 565 /***************************************************************************** 566 * edge_interrupt_callback 567 * this is the callback function for when we have received data on the 568 * interrupt endpoint. 569 *****************************************************************************/ 570 static void edge_interrupt_callback(struct urb *urb) 571 { 572 struct edgeport_serial *edge_serial = urb->context; 573 struct device *dev; 574 struct edgeport_port *edge_port; 575 struct usb_serial_port *port; 576 unsigned char *data = urb->transfer_buffer; 577 int length = urb->actual_length; 578 unsigned long flags; 579 int bytes_avail; 580 int position; 581 int txCredits; 582 int portNumber; 583 int result; 584 int status = urb->status; 585 586 switch (status) { 587 case 0: 588 /* success */ 589 break; 590 case -ECONNRESET: 591 case -ENOENT: 592 case -ESHUTDOWN: 593 /* this urb is terminated, clean up */ 594 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 595 return; 596 default: 597 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 598 goto exit; 599 } 600 601 dev = &edge_serial->serial->dev->dev; 602 603 /* process this interrupt-read even if there are no ports open */ 604 if (length) { 605 usb_serial_debug_data(dev, __func__, length, data); 606 607 if (length > 1) { 608 bytes_avail = data[0] | (data[1] << 8); 609 if (bytes_avail) { 610 spin_lock_irqsave(&edge_serial->es_lock, flags); 611 edge_serial->rxBytesAvail += bytes_avail; 612 dev_dbg(dev, 613 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 614 __func__, bytes_avail, 615 edge_serial->rxBytesAvail, 616 edge_serial->read_in_progress); 617 618 if (edge_serial->rxBytesAvail > 0 && 619 !edge_serial->read_in_progress) { 620 dev_dbg(dev, "%s - posting a read\n", __func__); 621 edge_serial->read_in_progress = true; 622 623 /* we have pending bytes on the 624 bulk in pipe, send a request */ 625 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 626 if (result) { 627 dev_err(dev, 628 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 629 __func__, result); 630 edge_serial->read_in_progress = false; 631 } 632 } 633 spin_unlock_irqrestore(&edge_serial->es_lock, 634 flags); 635 } 636 } 637 /* grab the txcredits for the ports if available */ 638 position = 2; 639 portNumber = 0; 640 while ((position < length - 1) && 641 (portNumber < edge_serial->serial->num_ports)) { 642 txCredits = data[position] | (data[position+1] << 8); 643 if (txCredits) { 644 port = edge_serial->serial->port[portNumber]; 645 edge_port = usb_get_serial_port_data(port); 646 if (edge_port && edge_port->open) { 647 spin_lock_irqsave(&edge_port->ep_lock, 648 flags); 649 edge_port->txCredits = min(edge_port->txCredits + txCredits, 650 edge_port->maxTxCredits); 651 spin_unlock_irqrestore(&edge_port->ep_lock, 652 flags); 653 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 654 __func__, portNumber, 655 edge_port->txCredits); 656 657 /* tell the tty driver that something 658 has changed */ 659 tty_port_tty_wakeup(&edge_port->port->port); 660 /* Since we have more credit, check 661 if more data can be sent */ 662 send_more_port_data(edge_serial, 663 edge_port); 664 } 665 } 666 position += 2; 667 ++portNumber; 668 } 669 } 670 671 exit: 672 result = usb_submit_urb(urb, GFP_ATOMIC); 673 if (result) 674 dev_err(&urb->dev->dev, 675 "%s - Error %d submitting control urb\n", 676 __func__, result); 677 } 678 679 680 /***************************************************************************** 681 * edge_bulk_in_callback 682 * this is the callback function for when we have received data on the 683 * bulk in endpoint. 684 *****************************************************************************/ 685 static void edge_bulk_in_callback(struct urb *urb) 686 { 687 struct edgeport_serial *edge_serial = urb->context; 688 struct device *dev; 689 unsigned char *data = urb->transfer_buffer; 690 int retval; 691 __u16 raw_data_length; 692 int status = urb->status; 693 unsigned long flags; 694 695 if (status) { 696 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 697 __func__, status); 698 edge_serial->read_in_progress = false; 699 return; 700 } 701 702 if (urb->actual_length == 0) { 703 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 704 edge_serial->read_in_progress = false; 705 return; 706 } 707 708 dev = &edge_serial->serial->dev->dev; 709 raw_data_length = urb->actual_length; 710 711 usb_serial_debug_data(dev, __func__, raw_data_length, data); 712 713 spin_lock_irqsave(&edge_serial->es_lock, flags); 714 715 /* decrement our rxBytes available by the number that we just got */ 716 edge_serial->rxBytesAvail -= raw_data_length; 717 718 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 719 raw_data_length, edge_serial->rxBytesAvail); 720 721 process_rcvd_data(edge_serial, data, urb->actual_length); 722 723 /* check to see if there's any more data for us to read */ 724 if (edge_serial->rxBytesAvail > 0) { 725 dev_dbg(dev, "%s - posting a read\n", __func__); 726 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 727 if (retval) { 728 dev_err(dev, 729 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 730 __func__, retval); 731 edge_serial->read_in_progress = false; 732 } 733 } else { 734 edge_serial->read_in_progress = false; 735 } 736 737 spin_unlock_irqrestore(&edge_serial->es_lock, flags); 738 } 739 740 741 /***************************************************************************** 742 * edge_bulk_out_data_callback 743 * this is the callback function for when we have finished sending 744 * serial data on the bulk out endpoint. 745 *****************************************************************************/ 746 static void edge_bulk_out_data_callback(struct urb *urb) 747 { 748 struct edgeport_port *edge_port = urb->context; 749 int status = urb->status; 750 751 if (status) { 752 dev_dbg(&urb->dev->dev, 753 "%s - nonzero write bulk status received: %d\n", 754 __func__, status); 755 } 756 757 if (edge_port->open) 758 tty_port_tty_wakeup(&edge_port->port->port); 759 760 /* Release the Write URB */ 761 edge_port->write_in_progress = false; 762 763 /* Check if more data needs to be sent */ 764 send_more_port_data((struct edgeport_serial *) 765 (usb_get_serial_data(edge_port->port->serial)), edge_port); 766 } 767 768 769 /***************************************************************************** 770 * BulkOutCmdCallback 771 * this is the callback function for when we have finished sending a 772 * command on the bulk out endpoint. 773 *****************************************************************************/ 774 static void edge_bulk_out_cmd_callback(struct urb *urb) 775 { 776 struct edgeport_port *edge_port = urb->context; 777 struct device *dev = &urb->dev->dev; 778 int status = urb->status; 779 780 atomic_dec(&CmdUrbs); 781 dev_dbg(dev, "%s - FREE URB %p (outstanding %d)\n", __func__, urb, 782 atomic_read(&CmdUrbs)); 783 784 785 /* clean up the transfer buffer */ 786 kfree(urb->transfer_buffer); 787 788 /* Free the command urb */ 789 usb_free_urb(urb); 790 791 if (status) { 792 dev_dbg(dev, "%s - nonzero write bulk status received: %d\n", 793 __func__, status); 794 return; 795 } 796 797 /* tell the tty driver that something has changed */ 798 if (edge_port->open) 799 tty_port_tty_wakeup(&edge_port->port->port); 800 801 /* we have completed the command */ 802 edge_port->commandPending = false; 803 wake_up(&edge_port->wait_command); 804 } 805 806 807 /***************************************************************************** 808 * Driver tty interface functions 809 *****************************************************************************/ 810 811 /***************************************************************************** 812 * SerialOpen 813 * this function is called by the tty driver when a port is opened 814 * If successful, we return 0 815 * Otherwise we return a negative error number. 816 *****************************************************************************/ 817 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 818 { 819 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 820 struct device *dev = &port->dev; 821 struct usb_serial *serial; 822 struct edgeport_serial *edge_serial; 823 int response; 824 825 if (edge_port == NULL) 826 return -ENODEV; 827 828 /* see if we've set up our endpoint info yet (can't set it up 829 in edge_startup as the structures were not set up at that time.) */ 830 serial = port->serial; 831 edge_serial = usb_get_serial_data(serial); 832 if (edge_serial == NULL) 833 return -ENODEV; 834 if (edge_serial->interrupt_in_buffer == NULL) { 835 struct usb_serial_port *port0 = serial->port[0]; 836 837 /* not set up yet, so do it now */ 838 edge_serial->interrupt_in_buffer = 839 port0->interrupt_in_buffer; 840 edge_serial->interrupt_in_endpoint = 841 port0->interrupt_in_endpointAddress; 842 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 843 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 844 edge_serial->bulk_in_endpoint = 845 port0->bulk_in_endpointAddress; 846 edge_serial->read_urb = port0->read_urb; 847 edge_serial->bulk_out_endpoint = 848 port0->bulk_out_endpointAddress; 849 850 /* set up our interrupt urb */ 851 usb_fill_int_urb(edge_serial->interrupt_read_urb, 852 serial->dev, 853 usb_rcvintpipe(serial->dev, 854 port0->interrupt_in_endpointAddress), 855 port0->interrupt_in_buffer, 856 edge_serial->interrupt_read_urb->transfer_buffer_length, 857 edge_interrupt_callback, edge_serial, 858 edge_serial->interrupt_read_urb->interval); 859 860 /* set up our bulk in urb */ 861 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 862 usb_rcvbulkpipe(serial->dev, 863 port0->bulk_in_endpointAddress), 864 port0->bulk_in_buffer, 865 edge_serial->read_urb->transfer_buffer_length, 866 edge_bulk_in_callback, edge_serial); 867 edge_serial->read_in_progress = false; 868 869 /* start interrupt read for this edgeport 870 * this interrupt will continue as long 871 * as the edgeport is connected */ 872 response = usb_submit_urb(edge_serial->interrupt_read_urb, 873 GFP_KERNEL); 874 if (response) { 875 dev_err(dev, "%s - Error %d submitting control urb\n", 876 __func__, response); 877 } 878 } 879 880 /* initialize our wait queues */ 881 init_waitqueue_head(&edge_port->wait_open); 882 init_waitqueue_head(&edge_port->wait_chase); 883 init_waitqueue_head(&edge_port->wait_command); 884 885 /* initialize our port settings */ 886 edge_port->txCredits = 0; /* Can't send any data yet */ 887 /* Must always set this bit to enable ints! */ 888 edge_port->shadowMCR = MCR_MASTER_IE; 889 edge_port->chaseResponsePending = false; 890 891 /* send a open port command */ 892 edge_port->openPending = true; 893 edge_port->open = false; 894 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 895 896 if (response < 0) { 897 dev_err(dev, "%s - error sending open port command\n", __func__); 898 edge_port->openPending = false; 899 return -ENODEV; 900 } 901 902 /* now wait for the port to be completely opened */ 903 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 904 OPEN_TIMEOUT); 905 906 if (!edge_port->open) { 907 /* open timed out */ 908 dev_dbg(dev, "%s - open timeout\n", __func__); 909 edge_port->openPending = false; 910 return -ENODEV; 911 } 912 913 /* create the txfifo */ 914 edge_port->txfifo.head = 0; 915 edge_port->txfifo.tail = 0; 916 edge_port->txfifo.count = 0; 917 edge_port->txfifo.size = edge_port->maxTxCredits; 918 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 919 920 if (!edge_port->txfifo.fifo) { 921 edge_close(port); 922 return -ENOMEM; 923 } 924 925 /* Allocate a URB for the write */ 926 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 927 edge_port->write_in_progress = false; 928 929 if (!edge_port->write_urb) { 930 edge_close(port); 931 return -ENOMEM; 932 } 933 934 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 935 __func__, edge_port->maxTxCredits); 936 937 return 0; 938 } 939 940 941 /************************************************************************ 942 * 943 * block_until_chase_response 944 * 945 * This function will block the close until one of the following: 946 * 1. Response to our Chase comes from Edgeport 947 * 2. A timeout of 10 seconds without activity has expired 948 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 949 * 950 ************************************************************************/ 951 static void block_until_chase_response(struct edgeport_port *edge_port) 952 { 953 struct device *dev = &edge_port->port->dev; 954 DEFINE_WAIT(wait); 955 __u16 lastCredits; 956 int timeout = 1*HZ; 957 int loop = 10; 958 959 while (1) { 960 /* Save Last credits */ 961 lastCredits = edge_port->txCredits; 962 963 /* Did we get our Chase response */ 964 if (!edge_port->chaseResponsePending) { 965 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 966 967 /* did we get all of our credit back? */ 968 if (edge_port->txCredits == edge_port->maxTxCredits) { 969 dev_dbg(dev, "%s - Got all credits\n", __func__); 970 return; 971 } 972 } 973 974 /* Block the thread for a while */ 975 prepare_to_wait(&edge_port->wait_chase, &wait, 976 TASK_UNINTERRUPTIBLE); 977 schedule_timeout(timeout); 978 finish_wait(&edge_port->wait_chase, &wait); 979 980 if (lastCredits == edge_port->txCredits) { 981 /* No activity.. count down. */ 982 loop--; 983 if (loop == 0) { 984 edge_port->chaseResponsePending = false; 985 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 986 return; 987 } 988 } else { 989 /* Reset timeout value back to 10 seconds */ 990 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 991 lastCredits, edge_port->txCredits); 992 loop = 10; 993 } 994 } 995 } 996 997 998 /************************************************************************ 999 * 1000 * block_until_tx_empty 1001 * 1002 * This function will block the close until one of the following: 1003 * 1. TX count are 0 1004 * 2. The edgeport has stopped 1005 * 3. A timeout of 3 seconds without activity has expired 1006 * 1007 ************************************************************************/ 1008 static void block_until_tx_empty(struct edgeport_port *edge_port) 1009 { 1010 struct device *dev = &edge_port->port->dev; 1011 DEFINE_WAIT(wait); 1012 struct TxFifo *fifo = &edge_port->txfifo; 1013 __u32 lastCount; 1014 int timeout = HZ/10; 1015 int loop = 30; 1016 1017 while (1) { 1018 /* Save Last count */ 1019 lastCount = fifo->count; 1020 1021 /* Is the Edgeport Buffer empty? */ 1022 if (lastCount == 0) { 1023 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1024 return; 1025 } 1026 1027 /* Block the thread for a while */ 1028 prepare_to_wait(&edge_port->wait_chase, &wait, 1029 TASK_UNINTERRUPTIBLE); 1030 schedule_timeout(timeout); 1031 finish_wait(&edge_port->wait_chase, &wait); 1032 1033 dev_dbg(dev, "%s wait\n", __func__); 1034 1035 if (lastCount == fifo->count) { 1036 /* No activity.. count down. */ 1037 loop--; 1038 if (loop == 0) { 1039 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1040 return; 1041 } 1042 } else { 1043 /* Reset timeout value back to seconds */ 1044 loop = 30; 1045 } 1046 } 1047 } 1048 1049 1050 /***************************************************************************** 1051 * edge_close 1052 * this function is called by the tty driver when a port is closed 1053 *****************************************************************************/ 1054 static void edge_close(struct usb_serial_port *port) 1055 { 1056 struct edgeport_serial *edge_serial; 1057 struct edgeport_port *edge_port; 1058 int status; 1059 1060 edge_serial = usb_get_serial_data(port->serial); 1061 edge_port = usb_get_serial_port_data(port); 1062 if (edge_serial == NULL || edge_port == NULL) 1063 return; 1064 1065 /* block until tx is empty */ 1066 block_until_tx_empty(edge_port); 1067 1068 edge_port->closePending = true; 1069 1070 if (!edge_serial->is_epic || 1071 edge_serial->epic_descriptor.Supports.IOSPChase) { 1072 /* flush and chase */ 1073 edge_port->chaseResponsePending = true; 1074 1075 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1076 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1077 if (status == 0) 1078 /* block until chase finished */ 1079 block_until_chase_response(edge_port); 1080 else 1081 edge_port->chaseResponsePending = false; 1082 } 1083 1084 if (!edge_serial->is_epic || 1085 edge_serial->epic_descriptor.Supports.IOSPClose) { 1086 /* close the port */ 1087 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1088 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1089 } 1090 1091 /* port->close = true; */ 1092 edge_port->closePending = false; 1093 edge_port->open = false; 1094 edge_port->openPending = false; 1095 1096 usb_kill_urb(edge_port->write_urb); 1097 1098 if (edge_port->write_urb) { 1099 /* if this urb had a transfer buffer already 1100 (old transfer) free it */ 1101 kfree(edge_port->write_urb->transfer_buffer); 1102 usb_free_urb(edge_port->write_urb); 1103 edge_port->write_urb = NULL; 1104 } 1105 kfree(edge_port->txfifo.fifo); 1106 edge_port->txfifo.fifo = NULL; 1107 } 1108 1109 /***************************************************************************** 1110 * SerialWrite 1111 * this function is called by the tty driver when data should be written 1112 * to the port. 1113 * If successful, we return the number of bytes written, otherwise we 1114 * return a negative error number. 1115 *****************************************************************************/ 1116 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1117 const unsigned char *data, int count) 1118 { 1119 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1120 struct TxFifo *fifo; 1121 int copySize; 1122 int bytesleft; 1123 int firsthalf; 1124 int secondhalf; 1125 unsigned long flags; 1126 1127 if (edge_port == NULL) 1128 return -ENODEV; 1129 1130 /* get a pointer to the Tx fifo */ 1131 fifo = &edge_port->txfifo; 1132 1133 spin_lock_irqsave(&edge_port->ep_lock, flags); 1134 1135 /* calculate number of bytes to put in fifo */ 1136 copySize = min_t(unsigned int, count, 1137 (edge_port->txCredits - fifo->count)); 1138 1139 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1140 __func__, count, edge_port->txCredits - fifo->count, copySize); 1141 1142 /* catch writes of 0 bytes which the tty driver likes to give us, 1143 and when txCredits is empty */ 1144 if (copySize == 0) { 1145 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1146 goto finish_write; 1147 } 1148 1149 /* queue the data 1150 * since we can never overflow the buffer we do not have to check for a 1151 * full condition 1152 * 1153 * the copy is done is two parts -- first fill to the end of the buffer 1154 * then copy the reset from the start of the buffer 1155 */ 1156 bytesleft = fifo->size - fifo->head; 1157 firsthalf = min(bytesleft, copySize); 1158 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1159 firsthalf, bytesleft); 1160 1161 /* now copy our data */ 1162 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1163 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1164 1165 /* update the index and size */ 1166 fifo->head += firsthalf; 1167 fifo->count += firsthalf; 1168 1169 /* wrap the index */ 1170 if (fifo->head == fifo->size) 1171 fifo->head = 0; 1172 1173 secondhalf = copySize-firsthalf; 1174 1175 if (secondhalf) { 1176 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1177 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1178 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1179 /* update the index and size */ 1180 fifo->count += secondhalf; 1181 fifo->head += secondhalf; 1182 /* No need to check for wrap since we can not get to end of 1183 * the fifo in this part 1184 */ 1185 } 1186 1187 finish_write: 1188 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1189 1190 send_more_port_data((struct edgeport_serial *) 1191 usb_get_serial_data(port->serial), edge_port); 1192 1193 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1194 __func__, copySize, edge_port->txCredits, fifo->count); 1195 1196 return copySize; 1197 } 1198 1199 1200 /************************************************************************ 1201 * 1202 * send_more_port_data() 1203 * 1204 * This routine attempts to write additional UART transmit data 1205 * to a port over the USB bulk pipe. It is called (1) when new 1206 * data has been written to a port's TxBuffer from higher layers 1207 * (2) when the peripheral sends us additional TxCredits indicating 1208 * that it can accept more Tx data for a given port; and (3) when 1209 * a bulk write completes successfully and we want to see if we 1210 * can transmit more. 1211 * 1212 ************************************************************************/ 1213 static void send_more_port_data(struct edgeport_serial *edge_serial, 1214 struct edgeport_port *edge_port) 1215 { 1216 struct TxFifo *fifo = &edge_port->txfifo; 1217 struct device *dev = &edge_port->port->dev; 1218 struct urb *urb; 1219 unsigned char *buffer; 1220 int status; 1221 int count; 1222 int bytesleft; 1223 int firsthalf; 1224 int secondhalf; 1225 unsigned long flags; 1226 1227 spin_lock_irqsave(&edge_port->ep_lock, flags); 1228 1229 if (edge_port->write_in_progress || 1230 !edge_port->open || 1231 (fifo->count == 0)) { 1232 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1233 __func__, fifo->count, edge_port->write_in_progress); 1234 goto exit_send; 1235 } 1236 1237 /* since the amount of data in the fifo will always fit into the 1238 * edgeport buffer we do not need to check the write length 1239 * 1240 * Do we have enough credits for this port to make it worthwhile 1241 * to bother queueing a write. If it's too small, say a few bytes, 1242 * it's better to wait for more credits so we can do a larger write. 1243 */ 1244 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1245 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1246 __func__, fifo->count, edge_port->txCredits); 1247 goto exit_send; 1248 } 1249 1250 /* lock this write */ 1251 edge_port->write_in_progress = true; 1252 1253 /* get a pointer to the write_urb */ 1254 urb = edge_port->write_urb; 1255 1256 /* make sure transfer buffer is freed */ 1257 kfree(urb->transfer_buffer); 1258 urb->transfer_buffer = NULL; 1259 1260 /* build the data header for the buffer and port that we are about 1261 to send out */ 1262 count = fifo->count; 1263 buffer = kmalloc(count+2, GFP_ATOMIC); 1264 if (!buffer) { 1265 edge_port->write_in_progress = false; 1266 goto exit_send; 1267 } 1268 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1269 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1270 1271 /* now copy our data */ 1272 bytesleft = fifo->size - fifo->tail; 1273 firsthalf = min(bytesleft, count); 1274 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1275 fifo->tail += firsthalf; 1276 fifo->count -= firsthalf; 1277 if (fifo->tail == fifo->size) 1278 fifo->tail = 0; 1279 1280 secondhalf = count-firsthalf; 1281 if (secondhalf) { 1282 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1283 secondhalf); 1284 fifo->tail += secondhalf; 1285 fifo->count -= secondhalf; 1286 } 1287 1288 if (count) 1289 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1290 1291 /* fill up the urb with all of our data and submit it */ 1292 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1293 usb_sndbulkpipe(edge_serial->serial->dev, 1294 edge_serial->bulk_out_endpoint), 1295 buffer, count+2, 1296 edge_bulk_out_data_callback, edge_port); 1297 1298 /* decrement the number of credits we have by the number we just sent */ 1299 edge_port->txCredits -= count; 1300 edge_port->port->icount.tx += count; 1301 1302 status = usb_submit_urb(urb, GFP_ATOMIC); 1303 if (status) { 1304 /* something went wrong */ 1305 dev_err_console(edge_port->port, 1306 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1307 __func__, status); 1308 edge_port->write_in_progress = false; 1309 1310 /* revert the credits as something bad happened. */ 1311 edge_port->txCredits += count; 1312 edge_port->port->icount.tx -= count; 1313 } 1314 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1315 __func__, count, edge_port->txCredits, fifo->count); 1316 1317 exit_send: 1318 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1319 } 1320 1321 1322 /***************************************************************************** 1323 * edge_write_room 1324 * this function is called by the tty driver when it wants to know how 1325 * many bytes of data we can accept for a specific port. 1326 *****************************************************************************/ 1327 static unsigned int edge_write_room(struct tty_struct *tty) 1328 { 1329 struct usb_serial_port *port = tty->driver_data; 1330 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1331 unsigned int room; 1332 unsigned long flags; 1333 1334 /* total of both buffers is still txCredit */ 1335 spin_lock_irqsave(&edge_port->ep_lock, flags); 1336 room = edge_port->txCredits - edge_port->txfifo.count; 1337 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1338 1339 dev_dbg(&port->dev, "%s - returns %u\n", __func__, room); 1340 return room; 1341 } 1342 1343 1344 /***************************************************************************** 1345 * edge_chars_in_buffer 1346 * this function is called by the tty driver when it wants to know how 1347 * many bytes of data we currently have outstanding in the port (data that 1348 * has been written, but hasn't made it out the port yet) 1349 *****************************************************************************/ 1350 static unsigned int edge_chars_in_buffer(struct tty_struct *tty) 1351 { 1352 struct usb_serial_port *port = tty->driver_data; 1353 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1354 unsigned int num_chars; 1355 unsigned long flags; 1356 1357 spin_lock_irqsave(&edge_port->ep_lock, flags); 1358 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1359 edge_port->txfifo.count; 1360 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1361 if (num_chars) { 1362 dev_dbg(&port->dev, "%s - returns %u\n", __func__, num_chars); 1363 } 1364 1365 return num_chars; 1366 } 1367 1368 1369 /***************************************************************************** 1370 * SerialThrottle 1371 * this function is called by the tty driver when it wants to stop the data 1372 * being read from the port. 1373 *****************************************************************************/ 1374 static void edge_throttle(struct tty_struct *tty) 1375 { 1376 struct usb_serial_port *port = tty->driver_data; 1377 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1378 int status; 1379 1380 if (edge_port == NULL) 1381 return; 1382 1383 if (!edge_port->open) { 1384 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1385 return; 1386 } 1387 1388 /* if we are implementing XON/XOFF, send the stop character */ 1389 if (I_IXOFF(tty)) { 1390 unsigned char stop_char = STOP_CHAR(tty); 1391 status = edge_write(tty, port, &stop_char, 1); 1392 if (status <= 0) 1393 return; 1394 } 1395 1396 /* if we are implementing RTS/CTS, toggle that line */ 1397 if (C_CRTSCTS(tty)) { 1398 edge_port->shadowMCR &= ~MCR_RTS; 1399 status = send_cmd_write_uart_register(edge_port, MCR, 1400 edge_port->shadowMCR); 1401 if (status != 0) 1402 return; 1403 } 1404 } 1405 1406 1407 /***************************************************************************** 1408 * edge_unthrottle 1409 * this function is called by the tty driver when it wants to resume the 1410 * data being read from the port (called after SerialThrottle is called) 1411 *****************************************************************************/ 1412 static void edge_unthrottle(struct tty_struct *tty) 1413 { 1414 struct usb_serial_port *port = tty->driver_data; 1415 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1416 int status; 1417 1418 if (edge_port == NULL) 1419 return; 1420 1421 if (!edge_port->open) { 1422 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1423 return; 1424 } 1425 1426 /* if we are implementing XON/XOFF, send the start character */ 1427 if (I_IXOFF(tty)) { 1428 unsigned char start_char = START_CHAR(tty); 1429 status = edge_write(tty, port, &start_char, 1); 1430 if (status <= 0) 1431 return; 1432 } 1433 /* if we are implementing RTS/CTS, toggle that line */ 1434 if (C_CRTSCTS(tty)) { 1435 edge_port->shadowMCR |= MCR_RTS; 1436 send_cmd_write_uart_register(edge_port, MCR, 1437 edge_port->shadowMCR); 1438 } 1439 } 1440 1441 1442 /***************************************************************************** 1443 * SerialSetTermios 1444 * this function is called by the tty driver when it wants to change 1445 * the termios structure 1446 *****************************************************************************/ 1447 static void edge_set_termios(struct tty_struct *tty, 1448 struct usb_serial_port *port, 1449 const struct ktermios *old_termios) 1450 { 1451 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1452 1453 if (edge_port == NULL) 1454 return; 1455 1456 if (!edge_port->open) { 1457 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1458 return; 1459 } 1460 1461 /* change the port settings to the new ones specified */ 1462 change_port_settings(tty, edge_port, old_termios); 1463 } 1464 1465 1466 /***************************************************************************** 1467 * get_lsr_info - get line status register info 1468 * 1469 * Purpose: Let user call ioctl() to get info when the UART physically 1470 * is emptied. On bus types like RS485, the transmitter must 1471 * release the bus after transmitting. This must be done when 1472 * the transmit shift register is empty, not be done when the 1473 * transmit holding register is empty. This functionality 1474 * allows an RS485 driver to be written in user space. 1475 *****************************************************************************/ 1476 static int get_lsr_info(struct edgeport_port *edge_port, 1477 unsigned int __user *value) 1478 { 1479 unsigned int result = 0; 1480 unsigned long flags; 1481 1482 spin_lock_irqsave(&edge_port->ep_lock, flags); 1483 if (edge_port->maxTxCredits == edge_port->txCredits && 1484 edge_port->txfifo.count == 0) { 1485 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1486 result = TIOCSER_TEMT; 1487 } 1488 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1489 1490 if (copy_to_user(value, &result, sizeof(int))) 1491 return -EFAULT; 1492 return 0; 1493 } 1494 1495 static int edge_tiocmset(struct tty_struct *tty, 1496 unsigned int set, unsigned int clear) 1497 { 1498 struct usb_serial_port *port = tty->driver_data; 1499 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1500 unsigned int mcr; 1501 1502 mcr = edge_port->shadowMCR; 1503 if (set & TIOCM_RTS) 1504 mcr |= MCR_RTS; 1505 if (set & TIOCM_DTR) 1506 mcr |= MCR_DTR; 1507 if (set & TIOCM_LOOP) 1508 mcr |= MCR_LOOPBACK; 1509 1510 if (clear & TIOCM_RTS) 1511 mcr &= ~MCR_RTS; 1512 if (clear & TIOCM_DTR) 1513 mcr &= ~MCR_DTR; 1514 if (clear & TIOCM_LOOP) 1515 mcr &= ~MCR_LOOPBACK; 1516 1517 edge_port->shadowMCR = mcr; 1518 1519 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1520 1521 return 0; 1522 } 1523 1524 static int edge_tiocmget(struct tty_struct *tty) 1525 { 1526 struct usb_serial_port *port = tty->driver_data; 1527 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1528 unsigned int result = 0; 1529 unsigned int msr; 1530 unsigned int mcr; 1531 1532 msr = edge_port->shadowMSR; 1533 mcr = edge_port->shadowMCR; 1534 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1535 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1536 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1537 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1538 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1539 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1540 1541 return result; 1542 } 1543 1544 /***************************************************************************** 1545 * SerialIoctl 1546 * this function handles any ioctl calls to the driver 1547 *****************************************************************************/ 1548 static int edge_ioctl(struct tty_struct *tty, 1549 unsigned int cmd, unsigned long arg) 1550 { 1551 struct usb_serial_port *port = tty->driver_data; 1552 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1553 1554 switch (cmd) { 1555 case TIOCSERGETLSR: 1556 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1557 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1558 } 1559 return -ENOIOCTLCMD; 1560 } 1561 1562 1563 /***************************************************************************** 1564 * SerialBreak 1565 * this function sends a break to the port 1566 *****************************************************************************/ 1567 static int edge_break(struct tty_struct *tty, int break_state) 1568 { 1569 struct usb_serial_port *port = tty->driver_data; 1570 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1571 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1572 int status = 0; 1573 1574 if (!edge_serial->is_epic || 1575 edge_serial->epic_descriptor.Supports.IOSPChase) { 1576 /* flush and chase */ 1577 edge_port->chaseResponsePending = true; 1578 1579 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1580 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1581 if (status == 0) { 1582 /* block until chase finished */ 1583 block_until_chase_response(edge_port); 1584 } else { 1585 edge_port->chaseResponsePending = false; 1586 } 1587 } 1588 1589 if (!edge_serial->is_epic || 1590 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1591 if (break_state == -1) { 1592 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1593 status = send_iosp_ext_cmd(edge_port, 1594 IOSP_CMD_SET_BREAK, 0); 1595 } else { 1596 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1597 status = send_iosp_ext_cmd(edge_port, 1598 IOSP_CMD_CLEAR_BREAK, 0); 1599 } 1600 if (status) 1601 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1602 __func__); 1603 } 1604 1605 return status; 1606 } 1607 1608 1609 /***************************************************************************** 1610 * process_rcvd_data 1611 * this function handles the data received on the bulk in pipe. 1612 *****************************************************************************/ 1613 static void process_rcvd_data(struct edgeport_serial *edge_serial, 1614 unsigned char *buffer, __u16 bufferLength) 1615 { 1616 struct usb_serial *serial = edge_serial->serial; 1617 struct device *dev = &serial->dev->dev; 1618 struct usb_serial_port *port; 1619 struct edgeport_port *edge_port; 1620 __u16 lastBufferLength; 1621 __u16 rxLen; 1622 1623 lastBufferLength = bufferLength + 1; 1624 1625 while (bufferLength > 0) { 1626 /* failsafe incase we get a message that we don't understand */ 1627 if (lastBufferLength == bufferLength) { 1628 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1629 break; 1630 } 1631 lastBufferLength = bufferLength; 1632 1633 switch (edge_serial->rxState) { 1634 case EXPECT_HDR1: 1635 edge_serial->rxHeader1 = *buffer; 1636 ++buffer; 1637 --bufferLength; 1638 1639 if (bufferLength == 0) { 1640 edge_serial->rxState = EXPECT_HDR2; 1641 break; 1642 } 1643 fallthrough; 1644 case EXPECT_HDR2: 1645 edge_serial->rxHeader2 = *buffer; 1646 ++buffer; 1647 --bufferLength; 1648 1649 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1650 edge_serial->rxHeader1, edge_serial->rxHeader2); 1651 /* Process depending on whether this header is 1652 * data or status */ 1653 1654 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1655 /* Decode this status header and go to 1656 * EXPECT_HDR1 (if we can process the status 1657 * with only 2 bytes), or go to EXPECT_HDR3 to 1658 * get the third byte. */ 1659 edge_serial->rxPort = 1660 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1661 edge_serial->rxStatusCode = 1662 IOSP_GET_STATUS_CODE( 1663 edge_serial->rxHeader1); 1664 1665 if (!IOSP_STATUS_IS_2BYTE( 1666 edge_serial->rxStatusCode)) { 1667 /* This status needs additional bytes. 1668 * Save what we have and then wait for 1669 * more data. 1670 */ 1671 edge_serial->rxStatusParam 1672 = edge_serial->rxHeader2; 1673 edge_serial->rxState = EXPECT_HDR3; 1674 break; 1675 } 1676 /* We have all the header bytes, process the 1677 status now */ 1678 process_rcvd_status(edge_serial, 1679 edge_serial->rxHeader2, 0); 1680 edge_serial->rxState = EXPECT_HDR1; 1681 break; 1682 } 1683 1684 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1685 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, 1686 edge_serial->rxHeader2); 1687 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, 1688 edge_serial->rxPort, 1689 edge_serial->rxBytesRemaining); 1690 1691 if (bufferLength == 0) { 1692 edge_serial->rxState = EXPECT_DATA; 1693 break; 1694 } 1695 fallthrough; 1696 case EXPECT_DATA: /* Expect data */ 1697 if (bufferLength < edge_serial->rxBytesRemaining) { 1698 rxLen = bufferLength; 1699 /* Expect data to start next buffer */ 1700 edge_serial->rxState = EXPECT_DATA; 1701 } else { 1702 /* BufLen >= RxBytesRemaining */ 1703 rxLen = edge_serial->rxBytesRemaining; 1704 /* Start another header next time */ 1705 edge_serial->rxState = EXPECT_HDR1; 1706 } 1707 1708 bufferLength -= rxLen; 1709 edge_serial->rxBytesRemaining -= rxLen; 1710 1711 /* spit this data back into the tty driver if this 1712 port is open */ 1713 if (rxLen && edge_serial->rxPort < serial->num_ports) { 1714 port = serial->port[edge_serial->rxPort]; 1715 edge_port = usb_get_serial_port_data(port); 1716 if (edge_port && edge_port->open) { 1717 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1718 __func__, rxLen, 1719 edge_serial->rxPort); 1720 edge_tty_recv(edge_port->port, buffer, 1721 rxLen); 1722 edge_port->port->icount.rx += rxLen; 1723 } 1724 } 1725 buffer += rxLen; 1726 break; 1727 1728 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1729 edge_serial->rxHeader3 = *buffer; 1730 ++buffer; 1731 --bufferLength; 1732 1733 /* We have all the header bytes, process the 1734 status now */ 1735 process_rcvd_status(edge_serial, 1736 edge_serial->rxStatusParam, 1737 edge_serial->rxHeader3); 1738 edge_serial->rxState = EXPECT_HDR1; 1739 break; 1740 } 1741 } 1742 } 1743 1744 1745 /***************************************************************************** 1746 * process_rcvd_status 1747 * this function handles the any status messages received on the 1748 * bulk in pipe. 1749 *****************************************************************************/ 1750 static void process_rcvd_status(struct edgeport_serial *edge_serial, 1751 __u8 byte2, __u8 byte3) 1752 { 1753 struct usb_serial_port *port; 1754 struct edgeport_port *edge_port; 1755 struct tty_struct *tty; 1756 struct device *dev; 1757 __u8 code = edge_serial->rxStatusCode; 1758 1759 /* switch the port pointer to the one being currently talked about */ 1760 if (edge_serial->rxPort >= edge_serial->serial->num_ports) 1761 return; 1762 port = edge_serial->serial->port[edge_serial->rxPort]; 1763 edge_port = usb_get_serial_port_data(port); 1764 if (edge_port == NULL) { 1765 dev_err(&edge_serial->serial->dev->dev, 1766 "%s - edge_port == NULL for port %d\n", 1767 __func__, edge_serial->rxPort); 1768 return; 1769 } 1770 dev = &port->dev; 1771 1772 if (code == IOSP_EXT_STATUS) { 1773 switch (byte2) { 1774 case IOSP_EXT_STATUS_CHASE_RSP: 1775 /* we want to do EXT status regardless of port 1776 * open/closed */ 1777 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1778 __func__, edge_serial->rxPort, byte3); 1779 /* Currently, the only EXT_STATUS is Chase, so process 1780 * here instead of one more call to one more subroutine 1781 * If/when more EXT_STATUS, there'll be more work to do 1782 * Also, we currently clear flag and close the port 1783 * regardless of content of above's Byte3. 1784 * We could choose to do something else when Byte3 says 1785 * Timeout on Chase from Edgeport, like wait longer in 1786 * block_until_chase_response, but for now we don't. 1787 */ 1788 edge_port->chaseResponsePending = false; 1789 wake_up(&edge_port->wait_chase); 1790 return; 1791 1792 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1793 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1794 __func__, edge_serial->rxPort, byte3); 1795 /* Port->RxCheckRsp = true; */ 1796 return; 1797 } 1798 } 1799 1800 if (code == IOSP_STATUS_OPEN_RSP) { 1801 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1802 edge_port->maxTxCredits = edge_port->txCredits; 1803 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1804 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1805 handle_new_msr(edge_port, byte2); 1806 1807 /* send the current line settings to the port so we are 1808 in sync with any further termios calls */ 1809 tty = tty_port_tty_get(&edge_port->port->port); 1810 if (tty) { 1811 change_port_settings(tty, 1812 edge_port, &tty->termios); 1813 tty_kref_put(tty); 1814 } 1815 1816 /* we have completed the open */ 1817 edge_port->openPending = false; 1818 edge_port->open = true; 1819 wake_up(&edge_port->wait_open); 1820 return; 1821 } 1822 1823 /* If port is closed, silently discard all rcvd status. We can 1824 * have cases where buffered status is received AFTER the close 1825 * port command is sent to the Edgeport. 1826 */ 1827 if (!edge_port->open || edge_port->closePending) 1828 return; 1829 1830 switch (code) { 1831 /* Not currently sent by Edgeport */ 1832 case IOSP_STATUS_LSR: 1833 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1834 __func__, edge_serial->rxPort, byte2); 1835 handle_new_lsr(edge_port, false, byte2, 0); 1836 break; 1837 1838 case IOSP_STATUS_LSR_DATA: 1839 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1840 __func__, edge_serial->rxPort, byte2, byte3); 1841 /* byte2 is LSR Register */ 1842 /* byte3 is broken data byte */ 1843 handle_new_lsr(edge_port, true, byte2, byte3); 1844 break; 1845 /* 1846 * case IOSP_EXT_4_STATUS: 1847 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1848 * __func__, edge_serial->rxPort, byte2, byte3); 1849 * break; 1850 */ 1851 case IOSP_STATUS_MSR: 1852 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1853 __func__, edge_serial->rxPort, byte2); 1854 /* 1855 * Process this new modem status and generate appropriate 1856 * events, etc, based on the new status. This routine 1857 * also saves the MSR in Port->ShadowMsr. 1858 */ 1859 handle_new_msr(edge_port, byte2); 1860 break; 1861 1862 default: 1863 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1864 break; 1865 } 1866 } 1867 1868 1869 /***************************************************************************** 1870 * edge_tty_recv 1871 * this function passes data on to the tty flip buffer 1872 *****************************************************************************/ 1873 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1874 int length) 1875 { 1876 int cnt; 1877 1878 cnt = tty_insert_flip_string(&port->port, data, length); 1879 if (cnt < length) { 1880 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1881 __func__, length - cnt); 1882 } 1883 data += cnt; 1884 length -= cnt; 1885 1886 tty_flip_buffer_push(&port->port); 1887 } 1888 1889 1890 /***************************************************************************** 1891 * handle_new_msr 1892 * this function handles any change to the msr register for a port. 1893 *****************************************************************************/ 1894 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 1895 { 1896 struct async_icount *icount; 1897 1898 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1899 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1900 icount = &edge_port->port->icount; 1901 1902 /* update input line counters */ 1903 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 1904 icount->cts++; 1905 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 1906 icount->dsr++; 1907 if (newMsr & EDGEPORT_MSR_DELTA_CD) 1908 icount->dcd++; 1909 if (newMsr & EDGEPORT_MSR_DELTA_RI) 1910 icount->rng++; 1911 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1912 } 1913 1914 /* Save the new modem status */ 1915 edge_port->shadowMSR = newMsr & 0xf0; 1916 } 1917 1918 1919 /***************************************************************************** 1920 * handle_new_lsr 1921 * this function handles any change to the lsr register for a port. 1922 *****************************************************************************/ 1923 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 1924 __u8 lsr, __u8 data) 1925 { 1926 __u8 newLsr = (__u8) (lsr & (__u8) 1927 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 1928 struct async_icount *icount; 1929 1930 edge_port->shadowLSR = lsr; 1931 1932 if (newLsr & LSR_BREAK) { 1933 /* 1934 * Parity and Framing errors only count if they 1935 * occur exclusive of a break being 1936 * received. 1937 */ 1938 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1939 } 1940 1941 /* Place LSR data byte into Rx buffer */ 1942 if (lsrData) 1943 edge_tty_recv(edge_port->port, &data, 1); 1944 1945 /* update input line counters */ 1946 icount = &edge_port->port->icount; 1947 if (newLsr & LSR_BREAK) 1948 icount->brk++; 1949 if (newLsr & LSR_OVER_ERR) 1950 icount->overrun++; 1951 if (newLsr & LSR_PAR_ERR) 1952 icount->parity++; 1953 if (newLsr & LSR_FRM_ERR) 1954 icount->frame++; 1955 } 1956 1957 1958 /**************************************************************************** 1959 * sram_write 1960 * writes a number of bytes to the Edgeport device's sram starting at the 1961 * given address. 1962 * If successful returns the number of bytes written, otherwise it returns 1963 * a negative error number of the problem. 1964 ****************************************************************************/ 1965 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 1966 __u16 length, const __u8 *data) 1967 { 1968 int result; 1969 __u16 current_length; 1970 unsigned char *transfer_buffer; 1971 1972 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 1973 1974 transfer_buffer = kmalloc(64, GFP_KERNEL); 1975 if (!transfer_buffer) 1976 return -ENOMEM; 1977 1978 /* need to split these writes up into 64 byte chunks */ 1979 result = 0; 1980 while (length > 0) { 1981 if (length > 64) 1982 current_length = 64; 1983 else 1984 current_length = length; 1985 1986 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 1987 memcpy(transfer_buffer, data, current_length); 1988 result = usb_control_msg(serial->dev, 1989 usb_sndctrlpipe(serial->dev, 0), 1990 USB_REQUEST_ION_WRITE_RAM, 1991 0x40, addr, extAddr, transfer_buffer, 1992 current_length, 300); 1993 if (result < 0) 1994 break; 1995 length -= current_length; 1996 addr += current_length; 1997 data += current_length; 1998 } 1999 2000 kfree(transfer_buffer); 2001 return result; 2002 } 2003 2004 2005 /**************************************************************************** 2006 * rom_write 2007 * writes a number of bytes to the Edgeport device's ROM starting at the 2008 * given address. 2009 * If successful returns the number of bytes written, otherwise it returns 2010 * a negative error number of the problem. 2011 ****************************************************************************/ 2012 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2013 __u16 length, const __u8 *data) 2014 { 2015 int result; 2016 __u16 current_length; 2017 unsigned char *transfer_buffer; 2018 2019 transfer_buffer = kmalloc(64, GFP_KERNEL); 2020 if (!transfer_buffer) 2021 return -ENOMEM; 2022 2023 /* need to split these writes up into 64 byte chunks */ 2024 result = 0; 2025 while (length > 0) { 2026 if (length > 64) 2027 current_length = 64; 2028 else 2029 current_length = length; 2030 memcpy(transfer_buffer, data, current_length); 2031 result = usb_control_msg(serial->dev, 2032 usb_sndctrlpipe(serial->dev, 0), 2033 USB_REQUEST_ION_WRITE_ROM, 0x40, 2034 addr, extAddr, 2035 transfer_buffer, current_length, 300); 2036 if (result < 0) 2037 break; 2038 length -= current_length; 2039 addr += current_length; 2040 data += current_length; 2041 } 2042 2043 kfree(transfer_buffer); 2044 return result; 2045 } 2046 2047 2048 /**************************************************************************** 2049 * rom_read 2050 * reads a number of bytes from the Edgeport device starting at the given 2051 * address. 2052 * Returns zero on success or a negative error number. 2053 ****************************************************************************/ 2054 static int rom_read(struct usb_serial *serial, __u16 extAddr, 2055 __u16 addr, __u16 length, __u8 *data) 2056 { 2057 int result; 2058 __u16 current_length; 2059 unsigned char *transfer_buffer; 2060 2061 transfer_buffer = kmalloc(64, GFP_KERNEL); 2062 if (!transfer_buffer) 2063 return -ENOMEM; 2064 2065 /* need to split these reads up into 64 byte chunks */ 2066 result = 0; 2067 while (length > 0) { 2068 if (length > 64) 2069 current_length = 64; 2070 else 2071 current_length = length; 2072 result = usb_control_msg(serial->dev, 2073 usb_rcvctrlpipe(serial->dev, 0), 2074 USB_REQUEST_ION_READ_ROM, 2075 0xC0, addr, extAddr, transfer_buffer, 2076 current_length, 300); 2077 if (result < current_length) { 2078 if (result >= 0) 2079 result = -EIO; 2080 break; 2081 } 2082 memcpy(data, transfer_buffer, current_length); 2083 length -= current_length; 2084 addr += current_length; 2085 data += current_length; 2086 2087 result = 0; 2088 } 2089 2090 kfree(transfer_buffer); 2091 return result; 2092 } 2093 2094 2095 /**************************************************************************** 2096 * send_iosp_ext_cmd 2097 * Is used to send a IOSP message to the Edgeport device 2098 ****************************************************************************/ 2099 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2100 __u8 command, __u8 param) 2101 { 2102 unsigned char *buffer; 2103 unsigned char *currentCommand; 2104 int length = 0; 2105 int status = 0; 2106 2107 buffer = kmalloc(10, GFP_ATOMIC); 2108 if (!buffer) 2109 return -ENOMEM; 2110 2111 currentCommand = buffer; 2112 2113 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2114 command, param); 2115 2116 status = write_cmd_usb(edge_port, buffer, length); 2117 if (status) { 2118 /* something bad happened, let's free up the memory */ 2119 kfree(buffer); 2120 } 2121 2122 return status; 2123 } 2124 2125 2126 /***************************************************************************** 2127 * write_cmd_usb 2128 * this function writes the given buffer out to the bulk write endpoint. 2129 *****************************************************************************/ 2130 static int write_cmd_usb(struct edgeport_port *edge_port, 2131 unsigned char *buffer, int length) 2132 { 2133 struct edgeport_serial *edge_serial = 2134 usb_get_serial_data(edge_port->port->serial); 2135 struct device *dev = &edge_port->port->dev; 2136 int status = 0; 2137 struct urb *urb; 2138 2139 usb_serial_debug_data(dev, __func__, length, buffer); 2140 2141 /* Allocate our next urb */ 2142 urb = usb_alloc_urb(0, GFP_ATOMIC); 2143 if (!urb) 2144 return -ENOMEM; 2145 2146 atomic_inc(&CmdUrbs); 2147 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2148 __func__, urb, atomic_read(&CmdUrbs)); 2149 2150 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2151 usb_sndbulkpipe(edge_serial->serial->dev, 2152 edge_serial->bulk_out_endpoint), 2153 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2154 2155 edge_port->commandPending = true; 2156 status = usb_submit_urb(urb, GFP_ATOMIC); 2157 2158 if (status) { 2159 /* something went wrong */ 2160 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2161 __func__, status); 2162 usb_free_urb(urb); 2163 atomic_dec(&CmdUrbs); 2164 return status; 2165 } 2166 2167 #if 0 2168 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2169 2170 if (edge_port->commandPending) { 2171 /* command timed out */ 2172 dev_dbg(dev, "%s - command timed out\n", __func__); 2173 status = -EINVAL; 2174 } 2175 #endif 2176 return status; 2177 } 2178 2179 2180 /***************************************************************************** 2181 * send_cmd_write_baud_rate 2182 * this function sends the proper command to change the baud rate of the 2183 * specified port. 2184 *****************************************************************************/ 2185 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2186 int baudRate) 2187 { 2188 struct edgeport_serial *edge_serial = 2189 usb_get_serial_data(edge_port->port->serial); 2190 struct device *dev = &edge_port->port->dev; 2191 unsigned char *cmdBuffer; 2192 unsigned char *currCmd; 2193 int cmdLen = 0; 2194 int divisor; 2195 int status; 2196 u32 number = edge_port->port->port_number; 2197 2198 if (edge_serial->is_epic && 2199 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2200 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2201 baudRate); 2202 return 0; 2203 } 2204 2205 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2206 2207 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2208 if (status) { 2209 dev_err(dev, "%s - bad baud rate\n", __func__); 2210 return status; 2211 } 2212 2213 /* Alloc memory for the string of commands. */ 2214 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2215 if (!cmdBuffer) 2216 return -ENOMEM; 2217 2218 currCmd = cmdBuffer; 2219 2220 /* Enable access to divisor latch */ 2221 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2222 2223 /* Write the divisor itself */ 2224 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2225 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2226 2227 /* Restore original value to disable access to divisor latch */ 2228 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2229 edge_port->shadowLCR); 2230 2231 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2232 if (status) { 2233 /* something bad happened, let's free up the memory */ 2234 kfree(cmdBuffer); 2235 } 2236 2237 return status; 2238 } 2239 2240 2241 /***************************************************************************** 2242 * calc_baud_rate_divisor 2243 * this function calculates the proper baud rate divisor for the specified 2244 * baud rate. 2245 *****************************************************************************/ 2246 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2247 { 2248 int i; 2249 __u16 custom; 2250 2251 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2252 if (divisor_table[i].BaudRate == baudrate) { 2253 *divisor = divisor_table[i].Divisor; 2254 return 0; 2255 } 2256 } 2257 2258 /* We have tried all of the standard baud rates 2259 * lets try to calculate the divisor for this baud rate 2260 * Make sure the baud rate is reasonable */ 2261 if (baudrate > 50 && baudrate < 230400) { 2262 /* get divisor */ 2263 custom = (__u16)((230400L + baudrate/2) / baudrate); 2264 2265 *divisor = custom; 2266 2267 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2268 return 0; 2269 } 2270 2271 return -1; 2272 } 2273 2274 2275 /***************************************************************************** 2276 * send_cmd_write_uart_register 2277 * this function builds up a uart register message and sends to the device. 2278 *****************************************************************************/ 2279 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2280 __u8 regNum, __u8 regValue) 2281 { 2282 struct edgeport_serial *edge_serial = 2283 usb_get_serial_data(edge_port->port->serial); 2284 struct device *dev = &edge_port->port->dev; 2285 unsigned char *cmdBuffer; 2286 unsigned char *currCmd; 2287 unsigned long cmdLen = 0; 2288 int status; 2289 2290 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2291 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2292 2293 if (edge_serial->is_epic && 2294 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2295 regNum == MCR) { 2296 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2297 return 0; 2298 } 2299 2300 if (edge_serial->is_epic && 2301 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2302 regNum == LCR) { 2303 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2304 return 0; 2305 } 2306 2307 /* Alloc memory for the string of commands. */ 2308 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2309 if (cmdBuffer == NULL) 2310 return -ENOMEM; 2311 2312 currCmd = cmdBuffer; 2313 2314 /* Build a cmd in the buffer to write the given register */ 2315 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2316 regNum, regValue); 2317 2318 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2319 if (status) { 2320 /* something bad happened, let's free up the memory */ 2321 kfree(cmdBuffer); 2322 } 2323 2324 return status; 2325 } 2326 2327 2328 /***************************************************************************** 2329 * change_port_settings 2330 * This routine is called to set the UART on the device to match the 2331 * specified new settings. 2332 *****************************************************************************/ 2333 2334 static void change_port_settings(struct tty_struct *tty, 2335 struct edgeport_port *edge_port, const struct ktermios *old_termios) 2336 { 2337 struct device *dev = &edge_port->port->dev; 2338 struct edgeport_serial *edge_serial = 2339 usb_get_serial_data(edge_port->port->serial); 2340 int baud; 2341 unsigned cflag; 2342 __u8 mask = 0xff; 2343 __u8 lData; 2344 __u8 lParity; 2345 __u8 lStop; 2346 __u8 rxFlow; 2347 __u8 txFlow; 2348 int status; 2349 2350 if (!edge_port->open && 2351 !edge_port->openPending) { 2352 dev_dbg(dev, "%s - port not opened\n", __func__); 2353 return; 2354 } 2355 2356 cflag = tty->termios.c_cflag; 2357 2358 switch (cflag & CSIZE) { 2359 case CS5: 2360 lData = LCR_BITS_5; mask = 0x1f; 2361 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2362 break; 2363 case CS6: 2364 lData = LCR_BITS_6; mask = 0x3f; 2365 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2366 break; 2367 case CS7: 2368 lData = LCR_BITS_7; mask = 0x7f; 2369 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2370 break; 2371 default: 2372 case CS8: 2373 lData = LCR_BITS_8; 2374 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2375 break; 2376 } 2377 2378 lParity = LCR_PAR_NONE; 2379 if (cflag & PARENB) { 2380 if (cflag & CMSPAR) { 2381 if (cflag & PARODD) { 2382 lParity = LCR_PAR_MARK; 2383 dev_dbg(dev, "%s - parity = mark\n", __func__); 2384 } else { 2385 lParity = LCR_PAR_SPACE; 2386 dev_dbg(dev, "%s - parity = space\n", __func__); 2387 } 2388 } else if (cflag & PARODD) { 2389 lParity = LCR_PAR_ODD; 2390 dev_dbg(dev, "%s - parity = odd\n", __func__); 2391 } else { 2392 lParity = LCR_PAR_EVEN; 2393 dev_dbg(dev, "%s - parity = even\n", __func__); 2394 } 2395 } else { 2396 dev_dbg(dev, "%s - parity = none\n", __func__); 2397 } 2398 2399 if (cflag & CSTOPB) { 2400 lStop = LCR_STOP_2; 2401 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2402 } else { 2403 lStop = LCR_STOP_1; 2404 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2405 } 2406 2407 /* figure out the flow control settings */ 2408 rxFlow = txFlow = 0x00; 2409 if (cflag & CRTSCTS) { 2410 rxFlow |= IOSP_RX_FLOW_RTS; 2411 txFlow |= IOSP_TX_FLOW_CTS; 2412 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2413 } else { 2414 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2415 } 2416 2417 /* if we are implementing XON/XOFF, set the start and stop character 2418 in the device */ 2419 if (I_IXOFF(tty) || I_IXON(tty)) { 2420 unsigned char stop_char = STOP_CHAR(tty); 2421 unsigned char start_char = START_CHAR(tty); 2422 2423 if (!edge_serial->is_epic || 2424 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2425 send_iosp_ext_cmd(edge_port, 2426 IOSP_CMD_SET_XON_CHAR, start_char); 2427 send_iosp_ext_cmd(edge_port, 2428 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2429 } 2430 2431 /* if we are implementing INBOUND XON/XOFF */ 2432 if (I_IXOFF(tty)) { 2433 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2434 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2435 __func__, start_char, stop_char); 2436 } else { 2437 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2438 } 2439 2440 /* if we are implementing OUTBOUND XON/XOFF */ 2441 if (I_IXON(tty)) { 2442 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2443 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2444 __func__, start_char, stop_char); 2445 } else { 2446 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2447 } 2448 } 2449 2450 /* Set flow control to the configured value */ 2451 if (!edge_serial->is_epic || 2452 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2453 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2454 if (!edge_serial->is_epic || 2455 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2456 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2457 2458 2459 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2460 edge_port->shadowLCR |= (lData | lParity | lStop); 2461 2462 edge_port->validDataMask = mask; 2463 2464 /* Send the updated LCR value to the EdgePort */ 2465 status = send_cmd_write_uart_register(edge_port, LCR, 2466 edge_port->shadowLCR); 2467 if (status != 0) 2468 return; 2469 2470 /* set up the MCR register and send it to the EdgePort */ 2471 edge_port->shadowMCR = MCR_MASTER_IE; 2472 if (cflag & CBAUD) 2473 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2474 2475 status = send_cmd_write_uart_register(edge_port, MCR, 2476 edge_port->shadowMCR); 2477 if (status != 0) 2478 return; 2479 2480 /* Determine divisor based on baud rate */ 2481 baud = tty_get_baud_rate(tty); 2482 if (!baud) { 2483 /* pick a default, any default... */ 2484 baud = 9600; 2485 } 2486 2487 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2488 status = send_cmd_write_baud_rate(edge_port, baud); 2489 if (status == -1) { 2490 /* Speed change was not possible - put back the old speed */ 2491 baud = tty_termios_baud_rate(old_termios); 2492 tty_encode_baud_rate(tty, baud, baud); 2493 } 2494 } 2495 2496 2497 /**************************************************************************** 2498 * unicode_to_ascii 2499 * Turns a string from Unicode into ASCII. 2500 * Doesn't do a good job with any characters that are outside the normal 2501 * ASCII range, but it's only for debugging... 2502 * NOTE: expects the unicode in LE format 2503 ****************************************************************************/ 2504 static void unicode_to_ascii(char *string, int buflen, 2505 __le16 *unicode, int unicode_size) 2506 { 2507 int i; 2508 2509 if (buflen <= 0) /* never happens, but... */ 2510 return; 2511 --buflen; /* space for nul */ 2512 2513 for (i = 0; i < unicode_size; i++) { 2514 if (i >= buflen) 2515 break; 2516 string[i] = (char)(le16_to_cpu(unicode[i])); 2517 } 2518 string[i] = 0x00; 2519 } 2520 2521 2522 /**************************************************************************** 2523 * get_manufacturing_desc 2524 * reads in the manufacturing descriptor and stores it into the serial 2525 * structure. 2526 ****************************************************************************/ 2527 static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2528 { 2529 struct device *dev = &edge_serial->serial->dev->dev; 2530 int response; 2531 2532 dev_dbg(dev, "getting manufacturer descriptor\n"); 2533 2534 response = rom_read(edge_serial->serial, 2535 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2536 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2537 EDGE_MANUF_DESC_LEN, 2538 (__u8 *)(&edge_serial->manuf_descriptor)); 2539 2540 if (response < 0) { 2541 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2542 response); 2543 } else { 2544 char string[30]; 2545 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2546 dev_dbg(dev, " RomSize: %dK\n", 2547 edge_serial->manuf_descriptor.RomSize); 2548 dev_dbg(dev, " RamSize: %dK\n", 2549 edge_serial->manuf_descriptor.RamSize); 2550 dev_dbg(dev, " CpuRev: %d\n", 2551 edge_serial->manuf_descriptor.CpuRev); 2552 dev_dbg(dev, " BoardRev: %d\n", 2553 edge_serial->manuf_descriptor.BoardRev); 2554 dev_dbg(dev, " NumPorts: %d\n", 2555 edge_serial->manuf_descriptor.NumPorts); 2556 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2557 edge_serial->manuf_descriptor.DescDate[0], 2558 edge_serial->manuf_descriptor.DescDate[1], 2559 edge_serial->manuf_descriptor.DescDate[2]+1900); 2560 unicode_to_ascii(string, sizeof(string), 2561 edge_serial->manuf_descriptor.SerialNumber, 2562 edge_serial->manuf_descriptor.SerNumLength/2); 2563 dev_dbg(dev, " SerialNumber: %s\n", string); 2564 unicode_to_ascii(string, sizeof(string), 2565 edge_serial->manuf_descriptor.AssemblyNumber, 2566 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2567 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2568 unicode_to_ascii(string, sizeof(string), 2569 edge_serial->manuf_descriptor.OemAssyNumber, 2570 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2571 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2572 dev_dbg(dev, " UartType: %d\n", 2573 edge_serial->manuf_descriptor.UartType); 2574 dev_dbg(dev, " IonPid: %d\n", 2575 edge_serial->manuf_descriptor.IonPid); 2576 dev_dbg(dev, " IonConfig: %d\n", 2577 edge_serial->manuf_descriptor.IonConfig); 2578 } 2579 } 2580 2581 2582 /**************************************************************************** 2583 * get_boot_desc 2584 * reads in the bootloader descriptor and stores it into the serial 2585 * structure. 2586 ****************************************************************************/ 2587 static void get_boot_desc(struct edgeport_serial *edge_serial) 2588 { 2589 struct device *dev = &edge_serial->serial->dev->dev; 2590 int response; 2591 2592 dev_dbg(dev, "getting boot descriptor\n"); 2593 2594 response = rom_read(edge_serial->serial, 2595 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2596 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2597 EDGE_BOOT_DESC_LEN, 2598 (__u8 *)(&edge_serial->boot_descriptor)); 2599 2600 if (response < 0) { 2601 dev_err(dev, "error in getting boot descriptor: %d\n", 2602 response); 2603 } else { 2604 dev_dbg(dev, "**Boot Descriptor:\n"); 2605 dev_dbg(dev, " BootCodeLength: %d\n", 2606 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2607 dev_dbg(dev, " MajorVersion: %d\n", 2608 edge_serial->boot_descriptor.MajorVersion); 2609 dev_dbg(dev, " MinorVersion: %d\n", 2610 edge_serial->boot_descriptor.MinorVersion); 2611 dev_dbg(dev, " BuildNumber: %d\n", 2612 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2613 dev_dbg(dev, " Capabilities: 0x%x\n", 2614 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2615 dev_dbg(dev, " UConfig0: %d\n", 2616 edge_serial->boot_descriptor.UConfig0); 2617 dev_dbg(dev, " UConfig1: %d\n", 2618 edge_serial->boot_descriptor.UConfig1); 2619 } 2620 } 2621 2622 2623 /**************************************************************************** 2624 * load_application_firmware 2625 * This is called to load the application firmware to the device 2626 ****************************************************************************/ 2627 static void load_application_firmware(struct edgeport_serial *edge_serial) 2628 { 2629 struct device *dev = &edge_serial->serial->dev->dev; 2630 const struct ihex_binrec *rec; 2631 const struct firmware *fw; 2632 const char *fw_name; 2633 const char *fw_info; 2634 int response; 2635 __u32 Operaddr; 2636 __u16 build; 2637 2638 switch (edge_serial->product_info.iDownloadFile) { 2639 case EDGE_DOWNLOAD_FILE_I930: 2640 fw_info = "downloading firmware version (930)"; 2641 fw_name = "edgeport/down.fw"; 2642 break; 2643 2644 case EDGE_DOWNLOAD_FILE_80251: 2645 fw_info = "downloading firmware version (80251)"; 2646 fw_name = "edgeport/down2.fw"; 2647 break; 2648 2649 case EDGE_DOWNLOAD_FILE_NONE: 2650 dev_dbg(dev, "No download file specified, skipping download\n"); 2651 return; 2652 2653 default: 2654 return; 2655 } 2656 2657 response = request_ihex_firmware(&fw, fw_name, 2658 &edge_serial->serial->dev->dev); 2659 if (response) { 2660 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2661 fw_name, response); 2662 return; 2663 } 2664 2665 rec = (const struct ihex_binrec *)fw->data; 2666 build = (rec->data[2] << 8) | rec->data[3]; 2667 2668 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2669 2670 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2671 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2672 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2673 2674 for (rec = ihex_next_binrec(rec); rec; 2675 rec = ihex_next_binrec(rec)) { 2676 Operaddr = be32_to_cpu(rec->addr); 2677 response = sram_write(edge_serial->serial, 2678 Operaddr >> 16, 2679 Operaddr & 0xFFFF, 2680 be16_to_cpu(rec->len), 2681 &rec->data[0]); 2682 if (response < 0) { 2683 dev_err(&edge_serial->serial->dev->dev, 2684 "sram_write failed (%x, %x, %d)\n", 2685 Operaddr >> 16, Operaddr & 0xFFFF, 2686 be16_to_cpu(rec->len)); 2687 break; 2688 } 2689 } 2690 2691 dev_dbg(dev, "sending exec_dl_code\n"); 2692 response = usb_control_msg (edge_serial->serial->dev, 2693 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2694 USB_REQUEST_ION_EXEC_DL_CODE, 2695 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2696 2697 release_firmware(fw); 2698 } 2699 2700 2701 /**************************************************************************** 2702 * edge_startup 2703 ****************************************************************************/ 2704 static int edge_startup(struct usb_serial *serial) 2705 { 2706 struct edgeport_serial *edge_serial; 2707 struct usb_device *dev; 2708 struct device *ddev = &serial->dev->dev; 2709 int i; 2710 int response; 2711 bool interrupt_in_found; 2712 bool bulk_in_found; 2713 bool bulk_out_found; 2714 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2715 EDGE_COMPATIBILITY_MASK1, 2716 EDGE_COMPATIBILITY_MASK2 }; 2717 2718 dev = serial->dev; 2719 2720 /* create our private serial structure */ 2721 edge_serial = kzalloc_obj(struct edgeport_serial); 2722 if (!edge_serial) 2723 return -ENOMEM; 2724 2725 spin_lock_init(&edge_serial->es_lock); 2726 edge_serial->serial = serial; 2727 usb_set_serial_data(serial, edge_serial); 2728 2729 /* get the name for the device from the device */ 2730 i = usb_string(dev, dev->descriptor.iManufacturer, 2731 &edge_serial->name[0], MAX_NAME_LEN+1); 2732 if (i < 0) 2733 i = 0; 2734 edge_serial->name[i++] = ' '; 2735 usb_string(dev, dev->descriptor.iProduct, 2736 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2737 2738 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2739 2740 /* Read the epic descriptor */ 2741 if (get_epic_descriptor(edge_serial) < 0) { 2742 /* memcpy descriptor to Supports structures */ 2743 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2744 sizeof(struct edge_compatibility_bits)); 2745 2746 /* get the manufacturing descriptor for this device */ 2747 get_manufacturing_desc(edge_serial); 2748 2749 /* get the boot descriptor */ 2750 get_boot_desc(edge_serial); 2751 2752 get_product_info(edge_serial); 2753 } 2754 2755 /* set the number of ports from the manufacturing description */ 2756 /* serial->num_ports = serial->product_info.NumPorts; */ 2757 if ((!edge_serial->is_epic) && 2758 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2759 dev_warn(ddev, 2760 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2761 edge_serial->product_info.NumPorts, 2762 serial->num_ports); 2763 } 2764 2765 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2766 2767 /* If not an EPiC device */ 2768 if (!edge_serial->is_epic) { 2769 /* now load the application firmware into this device */ 2770 load_application_firmware(edge_serial); 2771 2772 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2773 2774 /* Check current Edgeport EEPROM and update if necessary */ 2775 update_edgeport_E2PROM(edge_serial); 2776 2777 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2778 2779 /* set the configuration to use #1 */ 2780 /* dev_dbg(ddev, "set_configuration 1\n"); */ 2781 /* usb_set_configuration (dev, 1); */ 2782 } 2783 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2784 edge_serial->product_info.FirmwareMajorVersion, 2785 edge_serial->product_info.FirmwareMinorVersion, 2786 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2787 2788 /* we set up the pointers to the endpoints in the edge_open function, 2789 * as the structures aren't created yet. */ 2790 2791 response = 0; 2792 2793 if (edge_serial->is_epic) { 2794 struct usb_host_interface *alt; 2795 2796 alt = serial->interface->cur_altsetting; 2797 2798 /* EPIC thing, set up our interrupt polling now and our read 2799 * urb, so that the device knows it really is connected. */ 2800 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2801 for (i = 0; i < alt->desc.bNumEndpoints; ++i) { 2802 struct usb_endpoint_descriptor *endpoint; 2803 int buffer_size; 2804 2805 endpoint = &alt->endpoint[i].desc; 2806 buffer_size = usb_endpoint_maxp(endpoint); 2807 if (!interrupt_in_found && 2808 (usb_endpoint_is_int_in(endpoint))) { 2809 /* we found a interrupt in endpoint */ 2810 dev_dbg(ddev, "found interrupt in\n"); 2811 2812 /* not set up yet, so do it now */ 2813 edge_serial->interrupt_read_urb = 2814 usb_alloc_urb(0, GFP_KERNEL); 2815 if (!edge_serial->interrupt_read_urb) { 2816 response = -ENOMEM; 2817 break; 2818 } 2819 2820 edge_serial->interrupt_in_buffer = 2821 kmalloc(buffer_size, GFP_KERNEL); 2822 if (!edge_serial->interrupt_in_buffer) { 2823 response = -ENOMEM; 2824 break; 2825 } 2826 edge_serial->interrupt_in_endpoint = 2827 endpoint->bEndpointAddress; 2828 2829 /* set up our interrupt urb */ 2830 usb_fill_int_urb( 2831 edge_serial->interrupt_read_urb, 2832 dev, 2833 usb_rcvintpipe(dev, 2834 endpoint->bEndpointAddress), 2835 edge_serial->interrupt_in_buffer, 2836 buffer_size, 2837 edge_interrupt_callback, 2838 edge_serial, 2839 endpoint->bInterval); 2840 2841 interrupt_in_found = true; 2842 } 2843 2844 if (!bulk_in_found && 2845 (usb_endpoint_is_bulk_in(endpoint))) { 2846 /* we found a bulk in endpoint */ 2847 dev_dbg(ddev, "found bulk in\n"); 2848 2849 /* not set up yet, so do it now */ 2850 edge_serial->read_urb = 2851 usb_alloc_urb(0, GFP_KERNEL); 2852 if (!edge_serial->read_urb) { 2853 response = -ENOMEM; 2854 break; 2855 } 2856 2857 edge_serial->bulk_in_buffer = 2858 kmalloc(buffer_size, GFP_KERNEL); 2859 if (!edge_serial->bulk_in_buffer) { 2860 response = -ENOMEM; 2861 break; 2862 } 2863 edge_serial->bulk_in_endpoint = 2864 endpoint->bEndpointAddress; 2865 2866 /* set up our bulk in urb */ 2867 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2868 usb_rcvbulkpipe(dev, 2869 endpoint->bEndpointAddress), 2870 edge_serial->bulk_in_buffer, 2871 usb_endpoint_maxp(endpoint), 2872 edge_bulk_in_callback, 2873 edge_serial); 2874 bulk_in_found = true; 2875 } 2876 2877 if (!bulk_out_found && 2878 (usb_endpoint_is_bulk_out(endpoint))) { 2879 /* we found a bulk out endpoint */ 2880 dev_dbg(ddev, "found bulk out\n"); 2881 edge_serial->bulk_out_endpoint = 2882 endpoint->bEndpointAddress; 2883 bulk_out_found = true; 2884 } 2885 } 2886 2887 if (response || !interrupt_in_found || !bulk_in_found || 2888 !bulk_out_found) { 2889 if (!response) { 2890 dev_err(ddev, "expected endpoints not found\n"); 2891 response = -ENODEV; 2892 } 2893 2894 goto error; 2895 } 2896 2897 /* start interrupt read for this edgeport this interrupt will 2898 * continue as long as the edgeport is connected */ 2899 response = usb_submit_urb(edge_serial->interrupt_read_urb, 2900 GFP_KERNEL); 2901 if (response) { 2902 dev_err(ddev, "%s - Error %d submitting control urb\n", 2903 __func__, response); 2904 2905 goto error; 2906 } 2907 } 2908 return response; 2909 2910 error: 2911 usb_free_urb(edge_serial->interrupt_read_urb); 2912 kfree(edge_serial->interrupt_in_buffer); 2913 2914 usb_free_urb(edge_serial->read_urb); 2915 kfree(edge_serial->bulk_in_buffer); 2916 2917 kfree(edge_serial); 2918 2919 return response; 2920 } 2921 2922 2923 /**************************************************************************** 2924 * edge_disconnect 2925 * This function is called whenever the device is removed from the usb bus. 2926 ****************************************************************************/ 2927 static void edge_disconnect(struct usb_serial *serial) 2928 { 2929 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2930 2931 if (edge_serial->is_epic) { 2932 usb_kill_urb(edge_serial->interrupt_read_urb); 2933 usb_kill_urb(edge_serial->read_urb); 2934 } 2935 } 2936 2937 2938 /**************************************************************************** 2939 * edge_release 2940 * This function is called when the device structure is deallocated. 2941 ****************************************************************************/ 2942 static void edge_release(struct usb_serial *serial) 2943 { 2944 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2945 2946 if (edge_serial->is_epic) { 2947 usb_kill_urb(edge_serial->interrupt_read_urb); 2948 usb_free_urb(edge_serial->interrupt_read_urb); 2949 kfree(edge_serial->interrupt_in_buffer); 2950 2951 usb_kill_urb(edge_serial->read_urb); 2952 usb_free_urb(edge_serial->read_urb); 2953 kfree(edge_serial->bulk_in_buffer); 2954 } 2955 2956 kfree(edge_serial); 2957 } 2958 2959 static int edge_port_probe(struct usb_serial_port *port) 2960 { 2961 struct edgeport_port *edge_port; 2962 2963 edge_port = kzalloc_obj(*edge_port); 2964 if (!edge_port) 2965 return -ENOMEM; 2966 2967 spin_lock_init(&edge_port->ep_lock); 2968 edge_port->port = port; 2969 2970 usb_set_serial_port_data(port, edge_port); 2971 2972 return 0; 2973 } 2974 2975 static void edge_port_remove(struct usb_serial_port *port) 2976 { 2977 struct edgeport_port *edge_port; 2978 2979 edge_port = usb_get_serial_port_data(port); 2980 kfree(edge_port); 2981 } 2982 2983 static struct usb_serial_driver edgeport_2port_device = { 2984 .driver = { 2985 .name = "edgeport_2", 2986 }, 2987 .description = "Edgeport 2 port adapter", 2988 .id_table = edgeport_2port_id_table, 2989 .num_ports = 2, 2990 .num_bulk_in = 1, 2991 .num_bulk_out = 1, 2992 .num_interrupt_in = 1, 2993 .open = edge_open, 2994 .close = edge_close, 2995 .throttle = edge_throttle, 2996 .unthrottle = edge_unthrottle, 2997 .attach = edge_startup, 2998 .disconnect = edge_disconnect, 2999 .release = edge_release, 3000 .port_probe = edge_port_probe, 3001 .port_remove = edge_port_remove, 3002 .ioctl = edge_ioctl, 3003 .set_termios = edge_set_termios, 3004 .tiocmget = edge_tiocmget, 3005 .tiocmset = edge_tiocmset, 3006 .tiocmiwait = usb_serial_generic_tiocmiwait, 3007 .get_icount = usb_serial_generic_get_icount, 3008 .write = edge_write, 3009 .write_room = edge_write_room, 3010 .chars_in_buffer = edge_chars_in_buffer, 3011 .break_ctl = edge_break, 3012 .read_int_callback = edge_interrupt_callback, 3013 .read_bulk_callback = edge_bulk_in_callback, 3014 .write_bulk_callback = edge_bulk_out_data_callback, 3015 }; 3016 3017 static struct usb_serial_driver edgeport_4port_device = { 3018 .driver = { 3019 .name = "edgeport_4", 3020 }, 3021 .description = "Edgeport 4 port adapter", 3022 .id_table = edgeport_4port_id_table, 3023 .num_ports = 4, 3024 .num_bulk_in = 1, 3025 .num_bulk_out = 1, 3026 .num_interrupt_in = 1, 3027 .open = edge_open, 3028 .close = edge_close, 3029 .throttle = edge_throttle, 3030 .unthrottle = edge_unthrottle, 3031 .attach = edge_startup, 3032 .disconnect = edge_disconnect, 3033 .release = edge_release, 3034 .port_probe = edge_port_probe, 3035 .port_remove = edge_port_remove, 3036 .ioctl = edge_ioctl, 3037 .set_termios = edge_set_termios, 3038 .tiocmget = edge_tiocmget, 3039 .tiocmset = edge_tiocmset, 3040 .tiocmiwait = usb_serial_generic_tiocmiwait, 3041 .get_icount = usb_serial_generic_get_icount, 3042 .write = edge_write, 3043 .write_room = edge_write_room, 3044 .chars_in_buffer = edge_chars_in_buffer, 3045 .break_ctl = edge_break, 3046 .read_int_callback = edge_interrupt_callback, 3047 .read_bulk_callback = edge_bulk_in_callback, 3048 .write_bulk_callback = edge_bulk_out_data_callback, 3049 }; 3050 3051 static struct usb_serial_driver edgeport_8port_device = { 3052 .driver = { 3053 .name = "edgeport_8", 3054 }, 3055 .description = "Edgeport 8 port adapter", 3056 .id_table = edgeport_8port_id_table, 3057 .num_ports = 8, 3058 .num_bulk_in = 1, 3059 .num_bulk_out = 1, 3060 .num_interrupt_in = 1, 3061 .open = edge_open, 3062 .close = edge_close, 3063 .throttle = edge_throttle, 3064 .unthrottle = edge_unthrottle, 3065 .attach = edge_startup, 3066 .disconnect = edge_disconnect, 3067 .release = edge_release, 3068 .port_probe = edge_port_probe, 3069 .port_remove = edge_port_remove, 3070 .ioctl = edge_ioctl, 3071 .set_termios = edge_set_termios, 3072 .tiocmget = edge_tiocmget, 3073 .tiocmset = edge_tiocmset, 3074 .tiocmiwait = usb_serial_generic_tiocmiwait, 3075 .get_icount = usb_serial_generic_get_icount, 3076 .write = edge_write, 3077 .write_room = edge_write_room, 3078 .chars_in_buffer = edge_chars_in_buffer, 3079 .break_ctl = edge_break, 3080 .read_int_callback = edge_interrupt_callback, 3081 .read_bulk_callback = edge_bulk_in_callback, 3082 .write_bulk_callback = edge_bulk_out_data_callback, 3083 }; 3084 3085 static struct usb_serial_driver epic_device = { 3086 .driver = { 3087 .name = "epic", 3088 }, 3089 .description = "EPiC device", 3090 .id_table = Epic_port_id_table, 3091 .num_ports = 1, 3092 .num_bulk_in = 1, 3093 .num_bulk_out = 1, 3094 .num_interrupt_in = 1, 3095 .open = edge_open, 3096 .close = edge_close, 3097 .throttle = edge_throttle, 3098 .unthrottle = edge_unthrottle, 3099 .attach = edge_startup, 3100 .disconnect = edge_disconnect, 3101 .release = edge_release, 3102 .port_probe = edge_port_probe, 3103 .port_remove = edge_port_remove, 3104 .ioctl = edge_ioctl, 3105 .set_termios = edge_set_termios, 3106 .tiocmget = edge_tiocmget, 3107 .tiocmset = edge_tiocmset, 3108 .tiocmiwait = usb_serial_generic_tiocmiwait, 3109 .get_icount = usb_serial_generic_get_icount, 3110 .write = edge_write, 3111 .write_room = edge_write_room, 3112 .chars_in_buffer = edge_chars_in_buffer, 3113 .break_ctl = edge_break, 3114 .read_int_callback = edge_interrupt_callback, 3115 .read_bulk_callback = edge_bulk_in_callback, 3116 .write_bulk_callback = edge_bulk_out_data_callback, 3117 }; 3118 3119 static struct usb_serial_driver * const serial_drivers[] = { 3120 &edgeport_2port_device, &edgeport_4port_device, 3121 &edgeport_8port_device, &epic_device, NULL 3122 }; 3123 3124 module_usb_serial_driver(serial_drivers, id_table_combined); 3125 3126 MODULE_AUTHOR(DRIVER_AUTHOR); 3127 MODULE_DESCRIPTION(DRIVER_DESC); 3128 MODULE_LICENSE("GPL"); 3129 MODULE_FIRMWARE("edgeport/boot.fw"); 3130 MODULE_FIRMWARE("edgeport/boot2.fw"); 3131 MODULE_FIRMWARE("edgeport/down.fw"); 3132 MODULE_FIRMWARE("edgeport/down2.fw"); 3133