1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Edgeport USB Serial Converter driver 4 * 5 * Copyright (C) 2000 Inside Out Networks, All rights reserved. 6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 7 * 8 * Supports the following devices: 9 * Edgeport/4 10 * Edgeport/4t 11 * Edgeport/2 12 * Edgeport/4i 13 * Edgeport/2i 14 * Edgeport/421 15 * Edgeport/21 16 * Rapidport/4 17 * Edgeport/8 18 * Edgeport/2D8 19 * Edgeport/4D8 20 * Edgeport/8i 21 * 22 * For questions or problems with this driver, contact Inside Out 23 * Networks technical support, or Peter Berger <pberger@brimson.com>, 24 * or Al Borchers <alborchers@steinerpoint.com>. 25 * 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/jiffies.h> 30 #include <linux/errno.h> 31 #include <linux/slab.h> 32 #include <linux/tty.h> 33 #include <linux/tty_driver.h> 34 #include <linux/tty_flip.h> 35 #include <linux/module.h> 36 #include <linux/spinlock.h> 37 #include <linux/serial.h> 38 #include <linux/ioctl.h> 39 #include <linux/wait.h> 40 #include <linux/firmware.h> 41 #include <linux/ihex.h> 42 #include <linux/uaccess.h> 43 #include <linux/usb.h> 44 #include <linux/usb/serial.h> 45 #include "io_edgeport.h" 46 #include "io_ionsp.h" /* info for the iosp messages */ 47 #include "io_16654.h" /* 16654 UART defines */ 48 49 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 50 #define DRIVER_DESC "Edgeport USB Serial Driver" 51 52 #define MAX_NAME_LEN 64 53 54 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ 55 56 static const struct usb_device_id edgeport_2port_id_table[] = { 57 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 58 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 59 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 60 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 62 { } 63 }; 64 65 static const struct usb_device_id edgeport_4port_id_table[] = { 66 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 67 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 68 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 69 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 76 { } 77 }; 78 79 static const struct usb_device_id edgeport_8port_id_table[] = { 80 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 86 { } 87 }; 88 89 static const struct usb_device_id Epic_port_id_table[] = { 90 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 95 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 98 { } 99 }; 100 101 /* Devices that this driver supports */ 102 static const struct usb_device_id id_table_combined[] = { 103 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 124 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 125 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 129 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 130 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 132 { } /* Terminating entry */ 133 }; 134 135 MODULE_DEVICE_TABLE(usb, id_table_combined); 136 137 138 /* receive port state */ 139 enum RXSTATE { 140 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 141 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 142 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 143 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 144 }; 145 146 147 /* Transmit Fifo 148 * This Transmit queue is an extension of the edgeport Rx buffer. 149 * The maximum amount of data buffered in both the edgeport 150 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 151 */ 152 struct TxFifo { 153 unsigned int head; /* index to head pointer (write) */ 154 unsigned int tail; /* index to tail pointer (read) */ 155 unsigned int count; /* Bytes in queue */ 156 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 157 unsigned char *fifo; /* allocated Buffer */ 158 }; 159 160 /* This structure holds all of the local port information */ 161 struct edgeport_port { 162 __u16 txCredits; /* our current credits for this port */ 163 __u16 maxTxCredits; /* the max size of the port */ 164 165 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 166 struct urb *write_urb; /* write URB for this port */ 167 bool write_in_progress; /* 'true' while a write URB is outstanding */ 168 spinlock_t ep_lock; 169 170 __u8 shadowLCR; /* last LCR value received */ 171 __u8 shadowMCR; /* last MCR value received */ 172 __u8 shadowMSR; /* last MSR value received */ 173 __u8 shadowLSR; /* last LSR value received */ 174 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 175 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 176 __u8 validDataMask; 177 __u32 baudRate; 178 179 bool open; 180 bool openPending; 181 bool commandPending; 182 bool closePending; 183 bool chaseResponsePending; 184 185 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 186 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 187 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 188 189 struct usb_serial_port *port; /* loop back to the owner of this object */ 190 }; 191 192 193 /* This structure holds all of the individual device information */ 194 struct edgeport_serial { 195 char name[MAX_NAME_LEN+2]; /* string name of this device */ 196 197 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 198 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 199 struct edgeport_product_info product_info; /* Product Info */ 200 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 201 int is_epic; /* flag if EPiC device or not */ 202 203 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 204 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 205 struct urb *interrupt_read_urb; /* our interrupt urb */ 206 207 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 208 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 209 struct urb *read_urb; /* our bulk read urb */ 210 bool read_in_progress; 211 spinlock_t es_lock; 212 213 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 214 215 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 216 217 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 218 __u8 rxHeader1; /* receive header byte 1 */ 219 __u8 rxHeader2; /* receive header byte 2 */ 220 __u8 rxHeader3; /* receive header byte 3 */ 221 __u8 rxPort; /* the port that we are currently receiving data for */ 222 __u8 rxStatusCode; /* the receive status code */ 223 __u8 rxStatusParam; /* the receive status paramater */ 224 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 225 struct usb_serial *serial; /* loop back to the owner of this object */ 226 }; 227 228 /* baud rate information */ 229 struct divisor_table_entry { 230 __u32 BaudRate; 231 __u16 Divisor; 232 }; 233 234 /* 235 * Define table of divisors for Rev A EdgePort/4 hardware 236 * These assume a 3.6864MHz crystal, the standard /16, and 237 * MCR.7 = 0. 238 */ 239 240 static const struct divisor_table_entry divisor_table[] = { 241 { 50, 4608}, 242 { 75, 3072}, 243 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 244 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 245 { 150, 1536}, 246 { 300, 768}, 247 { 600, 384}, 248 { 1200, 192}, 249 { 1800, 128}, 250 { 2400, 96}, 251 { 4800, 48}, 252 { 7200, 32}, 253 { 9600, 24}, 254 { 14400, 16}, 255 { 19200, 12}, 256 { 38400, 6}, 257 { 57600, 4}, 258 { 115200, 2}, 259 { 230400, 1}, 260 }; 261 262 /* Number of outstanding Command Write Urbs */ 263 static atomic_t CmdUrbs = ATOMIC_INIT(0); 264 265 266 /* function prototypes */ 267 268 static void edge_close(struct usb_serial_port *port); 269 270 static void process_rcvd_data(struct edgeport_serial *edge_serial, 271 unsigned char *buffer, __u16 bufferLength); 272 static void process_rcvd_status(struct edgeport_serial *edge_serial, 273 __u8 byte2, __u8 byte3); 274 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 275 int length); 276 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 277 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 278 __u8 lsr, __u8 data); 279 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 280 __u8 param); 281 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 282 static void change_port_settings(struct tty_struct *tty, 283 struct edgeport_port *edge_port, 284 struct ktermios *old_termios); 285 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 286 __u8 regNum, __u8 regValue); 287 static int write_cmd_usb(struct edgeport_port *edge_port, 288 unsigned char *buffer, int writeLength); 289 static void send_more_port_data(struct edgeport_serial *edge_serial, 290 struct edgeport_port *edge_port); 291 292 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 293 __u16 length, const __u8 *data); 294 295 /* ************************************************************************ */ 296 /* ************************************************************************ */ 297 /* ************************************************************************ */ 298 /* ************************************************************************ */ 299 300 /************************************************************************ 301 * * 302 * update_edgeport_E2PROM() Compare current versions of * 303 * Boot ROM and Manufacture * 304 * Descriptors with versions * 305 * embedded in this driver * 306 * * 307 ************************************************************************/ 308 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 309 { 310 struct device *dev = &edge_serial->serial->dev->dev; 311 __u32 BootCurVer; 312 __u32 BootNewVer; 313 __u8 BootMajorVersion; 314 __u8 BootMinorVersion; 315 __u16 BootBuildNumber; 316 __u32 Bootaddr; 317 const struct ihex_binrec *rec; 318 const struct firmware *fw; 319 const char *fw_name; 320 int response; 321 322 switch (edge_serial->product_info.iDownloadFile) { 323 case EDGE_DOWNLOAD_FILE_I930: 324 fw_name = "edgeport/boot.fw"; 325 break; 326 case EDGE_DOWNLOAD_FILE_80251: 327 fw_name = "edgeport/boot2.fw"; 328 break; 329 default: 330 return; 331 } 332 333 response = request_ihex_firmware(&fw, fw_name, 334 &edge_serial->serial->dev->dev); 335 if (response) { 336 dev_err(dev, "Failed to load image \"%s\" err %d\n", 337 fw_name, response); 338 return; 339 } 340 341 rec = (const struct ihex_binrec *)fw->data; 342 BootMajorVersion = rec->data[0]; 343 BootMinorVersion = rec->data[1]; 344 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 345 346 /* Check Boot Image Version */ 347 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 348 (edge_serial->boot_descriptor.MinorVersion << 16) + 349 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 350 351 BootNewVer = (BootMajorVersion << 24) + 352 (BootMinorVersion << 16) + 353 BootBuildNumber; 354 355 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 356 edge_serial->boot_descriptor.MajorVersion, 357 edge_serial->boot_descriptor.MinorVersion, 358 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 359 360 361 if (BootNewVer > BootCurVer) { 362 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 363 edge_serial->boot_descriptor.MajorVersion, 364 edge_serial->boot_descriptor.MinorVersion, 365 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 366 BootMajorVersion, BootMinorVersion, BootBuildNumber); 367 368 dev_dbg(dev, "Downloading new Boot Image\n"); 369 370 for (rec = ihex_next_binrec(rec); rec; 371 rec = ihex_next_binrec(rec)) { 372 Bootaddr = be32_to_cpu(rec->addr); 373 response = rom_write(edge_serial->serial, 374 Bootaddr >> 16, 375 Bootaddr & 0xFFFF, 376 be16_to_cpu(rec->len), 377 &rec->data[0]); 378 if (response < 0) { 379 dev_err(&edge_serial->serial->dev->dev, 380 "rom_write failed (%x, %x, %d)\n", 381 Bootaddr >> 16, Bootaddr & 0xFFFF, 382 be16_to_cpu(rec->len)); 383 break; 384 } 385 } 386 } else { 387 dev_dbg(dev, "Boot Image -- already up to date\n"); 388 } 389 release_firmware(fw); 390 } 391 392 #if 0 393 /************************************************************************ 394 * 395 * Get string descriptor from device 396 * 397 ************************************************************************/ 398 static int get_string_desc(struct usb_device *dev, int Id, 399 struct usb_string_descriptor **pRetDesc) 400 { 401 struct usb_string_descriptor StringDesc; 402 struct usb_string_descriptor *pStringDesc; 403 404 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); 405 406 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, 407 sizeof(StringDesc))) 408 return 0; 409 410 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); 411 if (!pStringDesc) 412 return -1; 413 414 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, 415 StringDesc.bLength)) { 416 kfree(pStringDesc); 417 return -1; 418 } 419 420 *pRetDesc = pStringDesc; 421 return 0; 422 } 423 #endif 424 425 static void dump_product_info(struct edgeport_serial *edge_serial, 426 struct edgeport_product_info *product_info) 427 { 428 struct device *dev = &edge_serial->serial->dev->dev; 429 430 /* Dump Product Info structure */ 431 dev_dbg(dev, "**Product Information:\n"); 432 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 433 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 434 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 435 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 436 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 437 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 438 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 439 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 440 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 441 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 442 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 443 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 444 product_info->BootMajorVersion, 445 product_info->BootMinorVersion, 446 le16_to_cpu(product_info->BootBuildNumber)); 447 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 448 product_info->FirmwareMajorVersion, 449 product_info->FirmwareMinorVersion, 450 le16_to_cpu(product_info->FirmwareBuildNumber)); 451 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 452 product_info->ManufactureDescDate[0], 453 product_info->ManufactureDescDate[1], 454 product_info->ManufactureDescDate[2]+1900); 455 dev_dbg(dev, " iDownloadFile 0x%x\n", 456 product_info->iDownloadFile); 457 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 458 } 459 460 static void get_product_info(struct edgeport_serial *edge_serial) 461 { 462 struct edgeport_product_info *product_info = &edge_serial->product_info; 463 464 memset(product_info, 0, sizeof(struct edgeport_product_info)); 465 466 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 467 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 468 product_info->ProdInfoVer = 0; 469 470 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 471 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 472 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 473 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 474 475 product_info->BootMajorVersion = 476 edge_serial->boot_descriptor.MajorVersion; 477 product_info->BootMinorVersion = 478 edge_serial->boot_descriptor.MinorVersion; 479 product_info->BootBuildNumber = 480 edge_serial->boot_descriptor.BuildNumber; 481 482 memcpy(product_info->ManufactureDescDate, 483 edge_serial->manuf_descriptor.DescDate, 484 sizeof(edge_serial->manuf_descriptor.DescDate)); 485 486 /* check if this is 2nd generation hardware */ 487 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 488 & ION_DEVICE_ID_80251_NETCHIP) 489 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 490 else 491 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 492 493 /* Determine Product type and set appropriate flags */ 494 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 495 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 496 case ION_DEVICE_ID_EDGEPORT_4T: 497 case ION_DEVICE_ID_EDGEPORT_4: 498 case ION_DEVICE_ID_EDGEPORT_2: 499 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 500 case ION_DEVICE_ID_EDGEPORT_8: 501 case ION_DEVICE_ID_EDGEPORT_421: 502 case ION_DEVICE_ID_EDGEPORT_21: 503 case ION_DEVICE_ID_EDGEPORT_2_DIN: 504 case ION_DEVICE_ID_EDGEPORT_4_DIN: 505 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 506 product_info->IsRS232 = 1; 507 break; 508 509 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 510 product_info->IsRS422 = 1; 511 product_info->IsRS485 = 1; 512 break; 513 514 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 515 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 516 product_info->IsRS422 = 1; 517 break; 518 } 519 520 dump_product_info(edge_serial, product_info); 521 } 522 523 static int get_epic_descriptor(struct edgeport_serial *ep) 524 { 525 int result; 526 struct usb_serial *serial = ep->serial; 527 struct edgeport_product_info *product_info = &ep->product_info; 528 struct edge_compatibility_descriptor *epic; 529 struct edge_compatibility_bits *bits; 530 struct device *dev = &serial->dev->dev; 531 532 ep->is_epic = 0; 533 534 epic = kmalloc(sizeof(*epic), GFP_KERNEL); 535 if (!epic) 536 return -ENOMEM; 537 538 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 539 USB_REQUEST_ION_GET_EPIC_DESC, 540 0xC0, 0x00, 0x00, 541 epic, sizeof(*epic), 542 300); 543 if (result == sizeof(*epic)) { 544 ep->is_epic = 1; 545 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 546 memset(product_info, 0, sizeof(struct edgeport_product_info)); 547 548 product_info->NumPorts = epic->NumPorts; 549 product_info->ProdInfoVer = 0; 550 product_info->FirmwareMajorVersion = epic->MajorVersion; 551 product_info->FirmwareMinorVersion = epic->MinorVersion; 552 product_info->FirmwareBuildNumber = epic->BuildNumber; 553 product_info->iDownloadFile = epic->iDownloadFile; 554 product_info->EpicVer = epic->EpicVer; 555 product_info->Epic = epic->Supports; 556 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 557 dump_product_info(ep, product_info); 558 559 bits = &ep->epic_descriptor.Supports; 560 dev_dbg(dev, "**EPIC descriptor:\n"); 561 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 562 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 563 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 564 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 565 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 566 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 567 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 568 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 569 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 570 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 571 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 572 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 573 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 574 575 result = 0; 576 } else if (result >= 0) { 577 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 578 result); 579 result = -EIO; 580 } 581 582 kfree(epic); 583 584 return result; 585 } 586 587 588 /************************************************************************/ 589 /************************************************************************/ 590 /* U S B C A L L B A C K F U N C T I O N S */ 591 /* U S B C A L L B A C K F U N C T I O N S */ 592 /************************************************************************/ 593 /************************************************************************/ 594 595 /***************************************************************************** 596 * edge_interrupt_callback 597 * this is the callback function for when we have received data on the 598 * interrupt endpoint. 599 *****************************************************************************/ 600 static void edge_interrupt_callback(struct urb *urb) 601 { 602 struct edgeport_serial *edge_serial = urb->context; 603 struct device *dev; 604 struct edgeport_port *edge_port; 605 struct usb_serial_port *port; 606 unsigned char *data = urb->transfer_buffer; 607 int length = urb->actual_length; 608 unsigned long flags; 609 int bytes_avail; 610 int position; 611 int txCredits; 612 int portNumber; 613 int result; 614 int status = urb->status; 615 616 switch (status) { 617 case 0: 618 /* success */ 619 break; 620 case -ECONNRESET: 621 case -ENOENT: 622 case -ESHUTDOWN: 623 /* this urb is terminated, clean up */ 624 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 625 return; 626 default: 627 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 628 goto exit; 629 } 630 631 dev = &edge_serial->serial->dev->dev; 632 633 /* process this interrupt-read even if there are no ports open */ 634 if (length) { 635 usb_serial_debug_data(dev, __func__, length, data); 636 637 if (length > 1) { 638 bytes_avail = data[0] | (data[1] << 8); 639 if (bytes_avail) { 640 spin_lock_irqsave(&edge_serial->es_lock, flags); 641 edge_serial->rxBytesAvail += bytes_avail; 642 dev_dbg(dev, 643 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 644 __func__, bytes_avail, 645 edge_serial->rxBytesAvail, 646 edge_serial->read_in_progress); 647 648 if (edge_serial->rxBytesAvail > 0 && 649 !edge_serial->read_in_progress) { 650 dev_dbg(dev, "%s - posting a read\n", __func__); 651 edge_serial->read_in_progress = true; 652 653 /* we have pending bytes on the 654 bulk in pipe, send a request */ 655 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 656 if (result) { 657 dev_err(dev, 658 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 659 __func__, result); 660 edge_serial->read_in_progress = false; 661 } 662 } 663 spin_unlock_irqrestore(&edge_serial->es_lock, 664 flags); 665 } 666 } 667 /* grab the txcredits for the ports if available */ 668 position = 2; 669 portNumber = 0; 670 while ((position < length - 1) && 671 (portNumber < edge_serial->serial->num_ports)) { 672 txCredits = data[position] | (data[position+1] << 8); 673 if (txCredits) { 674 port = edge_serial->serial->port[portNumber]; 675 edge_port = usb_get_serial_port_data(port); 676 if (edge_port && edge_port->open) { 677 spin_lock_irqsave(&edge_port->ep_lock, 678 flags); 679 edge_port->txCredits += txCredits; 680 spin_unlock_irqrestore(&edge_port->ep_lock, 681 flags); 682 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 683 __func__, portNumber, 684 edge_port->txCredits); 685 686 /* tell the tty driver that something 687 has changed */ 688 tty_port_tty_wakeup(&edge_port->port->port); 689 /* Since we have more credit, check 690 if more data can be sent */ 691 send_more_port_data(edge_serial, 692 edge_port); 693 } 694 } 695 position += 2; 696 ++portNumber; 697 } 698 } 699 700 exit: 701 result = usb_submit_urb(urb, GFP_ATOMIC); 702 if (result) 703 dev_err(&urb->dev->dev, 704 "%s - Error %d submitting control urb\n", 705 __func__, result); 706 } 707 708 709 /***************************************************************************** 710 * edge_bulk_in_callback 711 * this is the callback function for when we have received data on the 712 * bulk in endpoint. 713 *****************************************************************************/ 714 static void edge_bulk_in_callback(struct urb *urb) 715 { 716 struct edgeport_serial *edge_serial = urb->context; 717 struct device *dev; 718 unsigned char *data = urb->transfer_buffer; 719 int retval; 720 __u16 raw_data_length; 721 int status = urb->status; 722 unsigned long flags; 723 724 if (status) { 725 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 726 __func__, status); 727 edge_serial->read_in_progress = false; 728 return; 729 } 730 731 if (urb->actual_length == 0) { 732 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 733 edge_serial->read_in_progress = false; 734 return; 735 } 736 737 dev = &edge_serial->serial->dev->dev; 738 raw_data_length = urb->actual_length; 739 740 usb_serial_debug_data(dev, __func__, raw_data_length, data); 741 742 spin_lock_irqsave(&edge_serial->es_lock, flags); 743 744 /* decrement our rxBytes available by the number that we just got */ 745 edge_serial->rxBytesAvail -= raw_data_length; 746 747 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 748 raw_data_length, edge_serial->rxBytesAvail); 749 750 process_rcvd_data(edge_serial, data, urb->actual_length); 751 752 /* check to see if there's any more data for us to read */ 753 if (edge_serial->rxBytesAvail > 0) { 754 dev_dbg(dev, "%s - posting a read\n", __func__); 755 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 756 if (retval) { 757 dev_err(dev, 758 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 759 __func__, retval); 760 edge_serial->read_in_progress = false; 761 } 762 } else { 763 edge_serial->read_in_progress = false; 764 } 765 766 spin_unlock_irqrestore(&edge_serial->es_lock, flags); 767 } 768 769 770 /***************************************************************************** 771 * edge_bulk_out_data_callback 772 * this is the callback function for when we have finished sending 773 * serial data on the bulk out endpoint. 774 *****************************************************************************/ 775 static void edge_bulk_out_data_callback(struct urb *urb) 776 { 777 struct edgeport_port *edge_port = urb->context; 778 int status = urb->status; 779 780 if (status) { 781 dev_dbg(&urb->dev->dev, 782 "%s - nonzero write bulk status received: %d\n", 783 __func__, status); 784 } 785 786 if (edge_port->open) 787 tty_port_tty_wakeup(&edge_port->port->port); 788 789 /* Release the Write URB */ 790 edge_port->write_in_progress = false; 791 792 /* Check if more data needs to be sent */ 793 send_more_port_data((struct edgeport_serial *) 794 (usb_get_serial_data(edge_port->port->serial)), edge_port); 795 } 796 797 798 /***************************************************************************** 799 * BulkOutCmdCallback 800 * this is the callback function for when we have finished sending a 801 * command on the bulk out endpoint. 802 *****************************************************************************/ 803 static void edge_bulk_out_cmd_callback(struct urb *urb) 804 { 805 struct edgeport_port *edge_port = urb->context; 806 int status = urb->status; 807 808 atomic_dec(&CmdUrbs); 809 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", 810 __func__, urb, atomic_read(&CmdUrbs)); 811 812 813 /* clean up the transfer buffer */ 814 kfree(urb->transfer_buffer); 815 816 /* Free the command urb */ 817 usb_free_urb(urb); 818 819 if (status) { 820 dev_dbg(&urb->dev->dev, 821 "%s - nonzero write bulk status received: %d\n", 822 __func__, status); 823 return; 824 } 825 826 /* tell the tty driver that something has changed */ 827 if (edge_port->open) 828 tty_port_tty_wakeup(&edge_port->port->port); 829 830 /* we have completed the command */ 831 edge_port->commandPending = false; 832 wake_up(&edge_port->wait_command); 833 } 834 835 836 /***************************************************************************** 837 * Driver tty interface functions 838 *****************************************************************************/ 839 840 /***************************************************************************** 841 * SerialOpen 842 * this function is called by the tty driver when a port is opened 843 * If successful, we return 0 844 * Otherwise we return a negative error number. 845 *****************************************************************************/ 846 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 847 { 848 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 849 struct device *dev = &port->dev; 850 struct usb_serial *serial; 851 struct edgeport_serial *edge_serial; 852 int response; 853 854 if (edge_port == NULL) 855 return -ENODEV; 856 857 /* see if we've set up our endpoint info yet (can't set it up 858 in edge_startup as the structures were not set up at that time.) */ 859 serial = port->serial; 860 edge_serial = usb_get_serial_data(serial); 861 if (edge_serial == NULL) 862 return -ENODEV; 863 if (edge_serial->interrupt_in_buffer == NULL) { 864 struct usb_serial_port *port0 = serial->port[0]; 865 866 /* not set up yet, so do it now */ 867 edge_serial->interrupt_in_buffer = 868 port0->interrupt_in_buffer; 869 edge_serial->interrupt_in_endpoint = 870 port0->interrupt_in_endpointAddress; 871 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 872 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 873 edge_serial->bulk_in_endpoint = 874 port0->bulk_in_endpointAddress; 875 edge_serial->read_urb = port0->read_urb; 876 edge_serial->bulk_out_endpoint = 877 port0->bulk_out_endpointAddress; 878 879 /* set up our interrupt urb */ 880 usb_fill_int_urb(edge_serial->interrupt_read_urb, 881 serial->dev, 882 usb_rcvintpipe(serial->dev, 883 port0->interrupt_in_endpointAddress), 884 port0->interrupt_in_buffer, 885 edge_serial->interrupt_read_urb->transfer_buffer_length, 886 edge_interrupt_callback, edge_serial, 887 edge_serial->interrupt_read_urb->interval); 888 889 /* set up our bulk in urb */ 890 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 891 usb_rcvbulkpipe(serial->dev, 892 port0->bulk_in_endpointAddress), 893 port0->bulk_in_buffer, 894 edge_serial->read_urb->transfer_buffer_length, 895 edge_bulk_in_callback, edge_serial); 896 edge_serial->read_in_progress = false; 897 898 /* start interrupt read for this edgeport 899 * this interrupt will continue as long 900 * as the edgeport is connected */ 901 response = usb_submit_urb(edge_serial->interrupt_read_urb, 902 GFP_KERNEL); 903 if (response) { 904 dev_err(dev, "%s - Error %d submitting control urb\n", 905 __func__, response); 906 } 907 } 908 909 /* initialize our wait queues */ 910 init_waitqueue_head(&edge_port->wait_open); 911 init_waitqueue_head(&edge_port->wait_chase); 912 init_waitqueue_head(&edge_port->wait_command); 913 914 /* initialize our port settings */ 915 edge_port->txCredits = 0; /* Can't send any data yet */ 916 /* Must always set this bit to enable ints! */ 917 edge_port->shadowMCR = MCR_MASTER_IE; 918 edge_port->chaseResponsePending = false; 919 920 /* send a open port command */ 921 edge_port->openPending = true; 922 edge_port->open = false; 923 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 924 925 if (response < 0) { 926 dev_err(dev, "%s - error sending open port command\n", __func__); 927 edge_port->openPending = false; 928 return -ENODEV; 929 } 930 931 /* now wait for the port to be completely opened */ 932 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 933 OPEN_TIMEOUT); 934 935 if (!edge_port->open) { 936 /* open timed out */ 937 dev_dbg(dev, "%s - open timedout\n", __func__); 938 edge_port->openPending = false; 939 return -ENODEV; 940 } 941 942 /* create the txfifo */ 943 edge_port->txfifo.head = 0; 944 edge_port->txfifo.tail = 0; 945 edge_port->txfifo.count = 0; 946 edge_port->txfifo.size = edge_port->maxTxCredits; 947 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 948 949 if (!edge_port->txfifo.fifo) { 950 edge_close(port); 951 return -ENOMEM; 952 } 953 954 /* Allocate a URB for the write */ 955 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 956 edge_port->write_in_progress = false; 957 958 if (!edge_port->write_urb) { 959 edge_close(port); 960 return -ENOMEM; 961 } 962 963 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 964 __func__, edge_port->maxTxCredits); 965 966 return 0; 967 } 968 969 970 /************************************************************************ 971 * 972 * block_until_chase_response 973 * 974 * This function will block the close until one of the following: 975 * 1. Response to our Chase comes from Edgeport 976 * 2. A timeout of 10 seconds without activity has expired 977 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 978 * 979 ************************************************************************/ 980 static void block_until_chase_response(struct edgeport_port *edge_port) 981 { 982 struct device *dev = &edge_port->port->dev; 983 DEFINE_WAIT(wait); 984 __u16 lastCredits; 985 int timeout = 1*HZ; 986 int loop = 10; 987 988 while (1) { 989 /* Save Last credits */ 990 lastCredits = edge_port->txCredits; 991 992 /* Did we get our Chase response */ 993 if (!edge_port->chaseResponsePending) { 994 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 995 996 /* did we get all of our credit back? */ 997 if (edge_port->txCredits == edge_port->maxTxCredits) { 998 dev_dbg(dev, "%s - Got all credits\n", __func__); 999 return; 1000 } 1001 } 1002 1003 /* Block the thread for a while */ 1004 prepare_to_wait(&edge_port->wait_chase, &wait, 1005 TASK_UNINTERRUPTIBLE); 1006 schedule_timeout(timeout); 1007 finish_wait(&edge_port->wait_chase, &wait); 1008 1009 if (lastCredits == edge_port->txCredits) { 1010 /* No activity.. count down. */ 1011 loop--; 1012 if (loop == 0) { 1013 edge_port->chaseResponsePending = false; 1014 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 1015 return; 1016 } 1017 } else { 1018 /* Reset timeout value back to 10 seconds */ 1019 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 1020 lastCredits, edge_port->txCredits); 1021 loop = 10; 1022 } 1023 } 1024 } 1025 1026 1027 /************************************************************************ 1028 * 1029 * block_until_tx_empty 1030 * 1031 * This function will block the close until one of the following: 1032 * 1. TX count are 0 1033 * 2. The edgeport has stopped 1034 * 3. A timeout of 3 seconds without activity has expired 1035 * 1036 ************************************************************************/ 1037 static void block_until_tx_empty(struct edgeport_port *edge_port) 1038 { 1039 struct device *dev = &edge_port->port->dev; 1040 DEFINE_WAIT(wait); 1041 struct TxFifo *fifo = &edge_port->txfifo; 1042 __u32 lastCount; 1043 int timeout = HZ/10; 1044 int loop = 30; 1045 1046 while (1) { 1047 /* Save Last count */ 1048 lastCount = fifo->count; 1049 1050 /* Is the Edgeport Buffer empty? */ 1051 if (lastCount == 0) { 1052 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1053 return; 1054 } 1055 1056 /* Block the thread for a while */ 1057 prepare_to_wait(&edge_port->wait_chase, &wait, 1058 TASK_UNINTERRUPTIBLE); 1059 schedule_timeout(timeout); 1060 finish_wait(&edge_port->wait_chase, &wait); 1061 1062 dev_dbg(dev, "%s wait\n", __func__); 1063 1064 if (lastCount == fifo->count) { 1065 /* No activity.. count down. */ 1066 loop--; 1067 if (loop == 0) { 1068 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1069 return; 1070 } 1071 } else { 1072 /* Reset timeout value back to seconds */ 1073 loop = 30; 1074 } 1075 } 1076 } 1077 1078 1079 /***************************************************************************** 1080 * edge_close 1081 * this function is called by the tty driver when a port is closed 1082 *****************************************************************************/ 1083 static void edge_close(struct usb_serial_port *port) 1084 { 1085 struct edgeport_serial *edge_serial; 1086 struct edgeport_port *edge_port; 1087 int status; 1088 1089 edge_serial = usb_get_serial_data(port->serial); 1090 edge_port = usb_get_serial_port_data(port); 1091 if (edge_serial == NULL || edge_port == NULL) 1092 return; 1093 1094 /* block until tx is empty */ 1095 block_until_tx_empty(edge_port); 1096 1097 edge_port->closePending = true; 1098 1099 if (!edge_serial->is_epic || 1100 edge_serial->epic_descriptor.Supports.IOSPChase) { 1101 /* flush and chase */ 1102 edge_port->chaseResponsePending = true; 1103 1104 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1105 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1106 if (status == 0) 1107 /* block until chase finished */ 1108 block_until_chase_response(edge_port); 1109 else 1110 edge_port->chaseResponsePending = false; 1111 } 1112 1113 if (!edge_serial->is_epic || 1114 edge_serial->epic_descriptor.Supports.IOSPClose) { 1115 /* close the port */ 1116 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1117 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1118 } 1119 1120 /* port->close = true; */ 1121 edge_port->closePending = false; 1122 edge_port->open = false; 1123 edge_port->openPending = false; 1124 1125 usb_kill_urb(edge_port->write_urb); 1126 1127 if (edge_port->write_urb) { 1128 /* if this urb had a transfer buffer already 1129 (old transfer) free it */ 1130 kfree(edge_port->write_urb->transfer_buffer); 1131 usb_free_urb(edge_port->write_urb); 1132 edge_port->write_urb = NULL; 1133 } 1134 kfree(edge_port->txfifo.fifo); 1135 edge_port->txfifo.fifo = NULL; 1136 } 1137 1138 /***************************************************************************** 1139 * SerialWrite 1140 * this function is called by the tty driver when data should be written 1141 * to the port. 1142 * If successful, we return the number of bytes written, otherwise we 1143 * return a negative error number. 1144 *****************************************************************************/ 1145 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1146 const unsigned char *data, int count) 1147 { 1148 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1149 struct TxFifo *fifo; 1150 int copySize; 1151 int bytesleft; 1152 int firsthalf; 1153 int secondhalf; 1154 unsigned long flags; 1155 1156 if (edge_port == NULL) 1157 return -ENODEV; 1158 1159 /* get a pointer to the Tx fifo */ 1160 fifo = &edge_port->txfifo; 1161 1162 spin_lock_irqsave(&edge_port->ep_lock, flags); 1163 1164 /* calculate number of bytes to put in fifo */ 1165 copySize = min((unsigned int)count, 1166 (edge_port->txCredits - fifo->count)); 1167 1168 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1169 __func__, count, edge_port->txCredits - fifo->count, copySize); 1170 1171 /* catch writes of 0 bytes which the tty driver likes to give us, 1172 and when txCredits is empty */ 1173 if (copySize == 0) { 1174 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1175 goto finish_write; 1176 } 1177 1178 /* queue the data 1179 * since we can never overflow the buffer we do not have to check for a 1180 * full condition 1181 * 1182 * the copy is done is two parts -- first fill to the end of the buffer 1183 * then copy the reset from the start of the buffer 1184 */ 1185 bytesleft = fifo->size - fifo->head; 1186 firsthalf = min(bytesleft, copySize); 1187 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1188 firsthalf, bytesleft); 1189 1190 /* now copy our data */ 1191 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1192 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1193 1194 /* update the index and size */ 1195 fifo->head += firsthalf; 1196 fifo->count += firsthalf; 1197 1198 /* wrap the index */ 1199 if (fifo->head == fifo->size) 1200 fifo->head = 0; 1201 1202 secondhalf = copySize-firsthalf; 1203 1204 if (secondhalf) { 1205 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1206 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1207 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1208 /* update the index and size */ 1209 fifo->count += secondhalf; 1210 fifo->head += secondhalf; 1211 /* No need to check for wrap since we can not get to end of 1212 * the fifo in this part 1213 */ 1214 } 1215 1216 finish_write: 1217 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1218 1219 send_more_port_data((struct edgeport_serial *) 1220 usb_get_serial_data(port->serial), edge_port); 1221 1222 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1223 __func__, copySize, edge_port->txCredits, fifo->count); 1224 1225 return copySize; 1226 } 1227 1228 1229 /************************************************************************ 1230 * 1231 * send_more_port_data() 1232 * 1233 * This routine attempts to write additional UART transmit data 1234 * to a port over the USB bulk pipe. It is called (1) when new 1235 * data has been written to a port's TxBuffer from higher layers 1236 * (2) when the peripheral sends us additional TxCredits indicating 1237 * that it can accept more Tx data for a given port; and (3) when 1238 * a bulk write completes successfully and we want to see if we 1239 * can transmit more. 1240 * 1241 ************************************************************************/ 1242 static void send_more_port_data(struct edgeport_serial *edge_serial, 1243 struct edgeport_port *edge_port) 1244 { 1245 struct TxFifo *fifo = &edge_port->txfifo; 1246 struct device *dev = &edge_port->port->dev; 1247 struct urb *urb; 1248 unsigned char *buffer; 1249 int status; 1250 int count; 1251 int bytesleft; 1252 int firsthalf; 1253 int secondhalf; 1254 unsigned long flags; 1255 1256 spin_lock_irqsave(&edge_port->ep_lock, flags); 1257 1258 if (edge_port->write_in_progress || 1259 !edge_port->open || 1260 (fifo->count == 0)) { 1261 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1262 __func__, fifo->count, edge_port->write_in_progress); 1263 goto exit_send; 1264 } 1265 1266 /* since the amount of data in the fifo will always fit into the 1267 * edgeport buffer we do not need to check the write length 1268 * 1269 * Do we have enough credits for this port to make it worthwhile 1270 * to bother queueing a write. If it's too small, say a few bytes, 1271 * it's better to wait for more credits so we can do a larger write. 1272 */ 1273 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1274 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1275 __func__, fifo->count, edge_port->txCredits); 1276 goto exit_send; 1277 } 1278 1279 /* lock this write */ 1280 edge_port->write_in_progress = true; 1281 1282 /* get a pointer to the write_urb */ 1283 urb = edge_port->write_urb; 1284 1285 /* make sure transfer buffer is freed */ 1286 kfree(urb->transfer_buffer); 1287 urb->transfer_buffer = NULL; 1288 1289 /* build the data header for the buffer and port that we are about 1290 to send out */ 1291 count = fifo->count; 1292 buffer = kmalloc(count+2, GFP_ATOMIC); 1293 if (!buffer) { 1294 edge_port->write_in_progress = false; 1295 goto exit_send; 1296 } 1297 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1298 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1299 1300 /* now copy our data */ 1301 bytesleft = fifo->size - fifo->tail; 1302 firsthalf = min(bytesleft, count); 1303 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1304 fifo->tail += firsthalf; 1305 fifo->count -= firsthalf; 1306 if (fifo->tail == fifo->size) 1307 fifo->tail = 0; 1308 1309 secondhalf = count-firsthalf; 1310 if (secondhalf) { 1311 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1312 secondhalf); 1313 fifo->tail += secondhalf; 1314 fifo->count -= secondhalf; 1315 } 1316 1317 if (count) 1318 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1319 1320 /* fill up the urb with all of our data and submit it */ 1321 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1322 usb_sndbulkpipe(edge_serial->serial->dev, 1323 edge_serial->bulk_out_endpoint), 1324 buffer, count+2, 1325 edge_bulk_out_data_callback, edge_port); 1326 1327 /* decrement the number of credits we have by the number we just sent */ 1328 edge_port->txCredits -= count; 1329 edge_port->port->icount.tx += count; 1330 1331 status = usb_submit_urb(urb, GFP_ATOMIC); 1332 if (status) { 1333 /* something went wrong */ 1334 dev_err_console(edge_port->port, 1335 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1336 __func__, status); 1337 edge_port->write_in_progress = false; 1338 1339 /* revert the credits as something bad happened. */ 1340 edge_port->txCredits += count; 1341 edge_port->port->icount.tx -= count; 1342 } 1343 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1344 __func__, count, edge_port->txCredits, fifo->count); 1345 1346 exit_send: 1347 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1348 } 1349 1350 1351 /***************************************************************************** 1352 * edge_write_room 1353 * this function is called by the tty driver when it wants to know how 1354 * many bytes of data we can accept for a specific port. If successful, 1355 * we return the amount of room that we have for this port (the txCredits) 1356 * otherwise we return a negative error number. 1357 *****************************************************************************/ 1358 static int edge_write_room(struct tty_struct *tty) 1359 { 1360 struct usb_serial_port *port = tty->driver_data; 1361 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1362 int room; 1363 unsigned long flags; 1364 1365 if (edge_port == NULL) 1366 return 0; 1367 if (edge_port->closePending) 1368 return 0; 1369 1370 if (!edge_port->open) { 1371 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1372 return 0; 1373 } 1374 1375 /* total of both buffers is still txCredit */ 1376 spin_lock_irqsave(&edge_port->ep_lock, flags); 1377 room = edge_port->txCredits - edge_port->txfifo.count; 1378 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1379 1380 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 1381 return room; 1382 } 1383 1384 1385 /***************************************************************************** 1386 * edge_chars_in_buffer 1387 * this function is called by the tty driver when it wants to know how 1388 * many bytes of data we currently have outstanding in the port (data that 1389 * has been written, but hasn't made it out the port yet) 1390 * If successful, we return the number of bytes left to be written in the 1391 * system, 1392 * Otherwise we return a negative error number. 1393 *****************************************************************************/ 1394 static int edge_chars_in_buffer(struct tty_struct *tty) 1395 { 1396 struct usb_serial_port *port = tty->driver_data; 1397 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1398 int num_chars; 1399 unsigned long flags; 1400 1401 if (edge_port == NULL) 1402 return 0; 1403 if (edge_port->closePending) 1404 return 0; 1405 1406 if (!edge_port->open) { 1407 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1408 return 0; 1409 } 1410 1411 spin_lock_irqsave(&edge_port->ep_lock, flags); 1412 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1413 edge_port->txfifo.count; 1414 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1415 if (num_chars) { 1416 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); 1417 } 1418 1419 return num_chars; 1420 } 1421 1422 1423 /***************************************************************************** 1424 * SerialThrottle 1425 * this function is called by the tty driver when it wants to stop the data 1426 * being read from the port. 1427 *****************************************************************************/ 1428 static void edge_throttle(struct tty_struct *tty) 1429 { 1430 struct usb_serial_port *port = tty->driver_data; 1431 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1432 int status; 1433 1434 if (edge_port == NULL) 1435 return; 1436 1437 if (!edge_port->open) { 1438 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1439 return; 1440 } 1441 1442 /* if we are implementing XON/XOFF, send the stop character */ 1443 if (I_IXOFF(tty)) { 1444 unsigned char stop_char = STOP_CHAR(tty); 1445 status = edge_write(tty, port, &stop_char, 1); 1446 if (status <= 0) 1447 return; 1448 } 1449 1450 /* if we are implementing RTS/CTS, toggle that line */ 1451 if (C_CRTSCTS(tty)) { 1452 edge_port->shadowMCR &= ~MCR_RTS; 1453 status = send_cmd_write_uart_register(edge_port, MCR, 1454 edge_port->shadowMCR); 1455 if (status != 0) 1456 return; 1457 } 1458 } 1459 1460 1461 /***************************************************************************** 1462 * edge_unthrottle 1463 * this function is called by the tty driver when it wants to resume the 1464 * data being read from the port (called after SerialThrottle is called) 1465 *****************************************************************************/ 1466 static void edge_unthrottle(struct tty_struct *tty) 1467 { 1468 struct usb_serial_port *port = tty->driver_data; 1469 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1470 int status; 1471 1472 if (edge_port == NULL) 1473 return; 1474 1475 if (!edge_port->open) { 1476 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1477 return; 1478 } 1479 1480 /* if we are implementing XON/XOFF, send the start character */ 1481 if (I_IXOFF(tty)) { 1482 unsigned char start_char = START_CHAR(tty); 1483 status = edge_write(tty, port, &start_char, 1); 1484 if (status <= 0) 1485 return; 1486 } 1487 /* if we are implementing RTS/CTS, toggle that line */ 1488 if (C_CRTSCTS(tty)) { 1489 edge_port->shadowMCR |= MCR_RTS; 1490 send_cmd_write_uart_register(edge_port, MCR, 1491 edge_port->shadowMCR); 1492 } 1493 } 1494 1495 1496 /***************************************************************************** 1497 * SerialSetTermios 1498 * this function is called by the tty driver when it wants to change 1499 * the termios structure 1500 *****************************************************************************/ 1501 static void edge_set_termios(struct tty_struct *tty, 1502 struct usb_serial_port *port, struct ktermios *old_termios) 1503 { 1504 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1505 1506 if (edge_port == NULL) 1507 return; 1508 1509 if (!edge_port->open) { 1510 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1511 return; 1512 } 1513 1514 /* change the port settings to the new ones specified */ 1515 change_port_settings(tty, edge_port, old_termios); 1516 } 1517 1518 1519 /***************************************************************************** 1520 * get_lsr_info - get line status register info 1521 * 1522 * Purpose: Let user call ioctl() to get info when the UART physically 1523 * is emptied. On bus types like RS485, the transmitter must 1524 * release the bus after transmitting. This must be done when 1525 * the transmit shift register is empty, not be done when the 1526 * transmit holding register is empty. This functionality 1527 * allows an RS485 driver to be written in user space. 1528 *****************************************************************************/ 1529 static int get_lsr_info(struct edgeport_port *edge_port, 1530 unsigned int __user *value) 1531 { 1532 unsigned int result = 0; 1533 unsigned long flags; 1534 1535 spin_lock_irqsave(&edge_port->ep_lock, flags); 1536 if (edge_port->maxTxCredits == edge_port->txCredits && 1537 edge_port->txfifo.count == 0) { 1538 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1539 result = TIOCSER_TEMT; 1540 } 1541 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1542 1543 if (copy_to_user(value, &result, sizeof(int))) 1544 return -EFAULT; 1545 return 0; 1546 } 1547 1548 static int edge_tiocmset(struct tty_struct *tty, 1549 unsigned int set, unsigned int clear) 1550 { 1551 struct usb_serial_port *port = tty->driver_data; 1552 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1553 unsigned int mcr; 1554 1555 mcr = edge_port->shadowMCR; 1556 if (set & TIOCM_RTS) 1557 mcr |= MCR_RTS; 1558 if (set & TIOCM_DTR) 1559 mcr |= MCR_DTR; 1560 if (set & TIOCM_LOOP) 1561 mcr |= MCR_LOOPBACK; 1562 1563 if (clear & TIOCM_RTS) 1564 mcr &= ~MCR_RTS; 1565 if (clear & TIOCM_DTR) 1566 mcr &= ~MCR_DTR; 1567 if (clear & TIOCM_LOOP) 1568 mcr &= ~MCR_LOOPBACK; 1569 1570 edge_port->shadowMCR = mcr; 1571 1572 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1573 1574 return 0; 1575 } 1576 1577 static int edge_tiocmget(struct tty_struct *tty) 1578 { 1579 struct usb_serial_port *port = tty->driver_data; 1580 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1581 unsigned int result = 0; 1582 unsigned int msr; 1583 unsigned int mcr; 1584 1585 msr = edge_port->shadowMSR; 1586 mcr = edge_port->shadowMCR; 1587 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1588 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1589 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1590 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1591 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1592 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1593 1594 return result; 1595 } 1596 1597 /***************************************************************************** 1598 * SerialIoctl 1599 * this function handles any ioctl calls to the driver 1600 *****************************************************************************/ 1601 static int edge_ioctl(struct tty_struct *tty, 1602 unsigned int cmd, unsigned long arg) 1603 { 1604 struct usb_serial_port *port = tty->driver_data; 1605 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1606 1607 switch (cmd) { 1608 case TIOCSERGETLSR: 1609 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1610 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1611 } 1612 return -ENOIOCTLCMD; 1613 } 1614 1615 1616 /***************************************************************************** 1617 * SerialBreak 1618 * this function sends a break to the port 1619 *****************************************************************************/ 1620 static void edge_break(struct tty_struct *tty, int break_state) 1621 { 1622 struct usb_serial_port *port = tty->driver_data; 1623 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1624 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1625 int status; 1626 1627 if (!edge_serial->is_epic || 1628 edge_serial->epic_descriptor.Supports.IOSPChase) { 1629 /* flush and chase */ 1630 edge_port->chaseResponsePending = true; 1631 1632 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1633 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1634 if (status == 0) { 1635 /* block until chase finished */ 1636 block_until_chase_response(edge_port); 1637 } else { 1638 edge_port->chaseResponsePending = false; 1639 } 1640 } 1641 1642 if (!edge_serial->is_epic || 1643 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1644 if (break_state == -1) { 1645 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1646 status = send_iosp_ext_cmd(edge_port, 1647 IOSP_CMD_SET_BREAK, 0); 1648 } else { 1649 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1650 status = send_iosp_ext_cmd(edge_port, 1651 IOSP_CMD_CLEAR_BREAK, 0); 1652 } 1653 if (status) 1654 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1655 __func__); 1656 } 1657 } 1658 1659 1660 /***************************************************************************** 1661 * process_rcvd_data 1662 * this function handles the data received on the bulk in pipe. 1663 *****************************************************************************/ 1664 static void process_rcvd_data(struct edgeport_serial *edge_serial, 1665 unsigned char *buffer, __u16 bufferLength) 1666 { 1667 struct usb_serial *serial = edge_serial->serial; 1668 struct device *dev = &serial->dev->dev; 1669 struct usb_serial_port *port; 1670 struct edgeport_port *edge_port; 1671 __u16 lastBufferLength; 1672 __u16 rxLen; 1673 1674 lastBufferLength = bufferLength + 1; 1675 1676 while (bufferLength > 0) { 1677 /* failsafe incase we get a message that we don't understand */ 1678 if (lastBufferLength == bufferLength) { 1679 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1680 break; 1681 } 1682 lastBufferLength = bufferLength; 1683 1684 switch (edge_serial->rxState) { 1685 case EXPECT_HDR1: 1686 edge_serial->rxHeader1 = *buffer; 1687 ++buffer; 1688 --bufferLength; 1689 1690 if (bufferLength == 0) { 1691 edge_serial->rxState = EXPECT_HDR2; 1692 break; 1693 } 1694 fallthrough; 1695 case EXPECT_HDR2: 1696 edge_serial->rxHeader2 = *buffer; 1697 ++buffer; 1698 --bufferLength; 1699 1700 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1701 edge_serial->rxHeader1, edge_serial->rxHeader2); 1702 /* Process depending on whether this header is 1703 * data or status */ 1704 1705 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1706 /* Decode this status header and go to 1707 * EXPECT_HDR1 (if we can process the status 1708 * with only 2 bytes), or go to EXPECT_HDR3 to 1709 * get the third byte. */ 1710 edge_serial->rxPort = 1711 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1712 edge_serial->rxStatusCode = 1713 IOSP_GET_STATUS_CODE( 1714 edge_serial->rxHeader1); 1715 1716 if (!IOSP_STATUS_IS_2BYTE( 1717 edge_serial->rxStatusCode)) { 1718 /* This status needs additional bytes. 1719 * Save what we have and then wait for 1720 * more data. 1721 */ 1722 edge_serial->rxStatusParam 1723 = edge_serial->rxHeader2; 1724 edge_serial->rxState = EXPECT_HDR3; 1725 break; 1726 } 1727 /* We have all the header bytes, process the 1728 status now */ 1729 process_rcvd_status(edge_serial, 1730 edge_serial->rxHeader2, 0); 1731 edge_serial->rxState = EXPECT_HDR1; 1732 break; 1733 } 1734 1735 edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1736 edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, 1737 edge_serial->rxHeader2); 1738 dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, 1739 edge_serial->rxPort, 1740 edge_serial->rxBytesRemaining); 1741 1742 if (bufferLength == 0) { 1743 edge_serial->rxState = EXPECT_DATA; 1744 break; 1745 } 1746 fallthrough; 1747 case EXPECT_DATA: /* Expect data */ 1748 if (bufferLength < edge_serial->rxBytesRemaining) { 1749 rxLen = bufferLength; 1750 /* Expect data to start next buffer */ 1751 edge_serial->rxState = EXPECT_DATA; 1752 } else { 1753 /* BufLen >= RxBytesRemaining */ 1754 rxLen = edge_serial->rxBytesRemaining; 1755 /* Start another header next time */ 1756 edge_serial->rxState = EXPECT_HDR1; 1757 } 1758 1759 bufferLength -= rxLen; 1760 edge_serial->rxBytesRemaining -= rxLen; 1761 1762 /* spit this data back into the tty driver if this 1763 port is open */ 1764 if (rxLen && edge_serial->rxPort < serial->num_ports) { 1765 port = serial->port[edge_serial->rxPort]; 1766 edge_port = usb_get_serial_port_data(port); 1767 if (edge_port && edge_port->open) { 1768 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1769 __func__, rxLen, 1770 edge_serial->rxPort); 1771 edge_tty_recv(edge_port->port, buffer, 1772 rxLen); 1773 edge_port->port->icount.rx += rxLen; 1774 } 1775 } 1776 buffer += rxLen; 1777 break; 1778 1779 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1780 edge_serial->rxHeader3 = *buffer; 1781 ++buffer; 1782 --bufferLength; 1783 1784 /* We have all the header bytes, process the 1785 status now */ 1786 process_rcvd_status(edge_serial, 1787 edge_serial->rxStatusParam, 1788 edge_serial->rxHeader3); 1789 edge_serial->rxState = EXPECT_HDR1; 1790 break; 1791 } 1792 } 1793 } 1794 1795 1796 /***************************************************************************** 1797 * process_rcvd_status 1798 * this function handles the any status messages received on the 1799 * bulk in pipe. 1800 *****************************************************************************/ 1801 static void process_rcvd_status(struct edgeport_serial *edge_serial, 1802 __u8 byte2, __u8 byte3) 1803 { 1804 struct usb_serial_port *port; 1805 struct edgeport_port *edge_port; 1806 struct tty_struct *tty; 1807 struct device *dev; 1808 __u8 code = edge_serial->rxStatusCode; 1809 1810 /* switch the port pointer to the one being currently talked about */ 1811 if (edge_serial->rxPort >= edge_serial->serial->num_ports) 1812 return; 1813 port = edge_serial->serial->port[edge_serial->rxPort]; 1814 edge_port = usb_get_serial_port_data(port); 1815 if (edge_port == NULL) { 1816 dev_err(&edge_serial->serial->dev->dev, 1817 "%s - edge_port == NULL for port %d\n", 1818 __func__, edge_serial->rxPort); 1819 return; 1820 } 1821 dev = &port->dev; 1822 1823 if (code == IOSP_EXT_STATUS) { 1824 switch (byte2) { 1825 case IOSP_EXT_STATUS_CHASE_RSP: 1826 /* we want to do EXT status regardless of port 1827 * open/closed */ 1828 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1829 __func__, edge_serial->rxPort, byte3); 1830 /* Currently, the only EXT_STATUS is Chase, so process 1831 * here instead of one more call to one more subroutine 1832 * If/when more EXT_STATUS, there'll be more work to do 1833 * Also, we currently clear flag and close the port 1834 * regardless of content of above's Byte3. 1835 * We could choose to do something else when Byte3 says 1836 * Timeout on Chase from Edgeport, like wait longer in 1837 * block_until_chase_response, but for now we don't. 1838 */ 1839 edge_port->chaseResponsePending = false; 1840 wake_up(&edge_port->wait_chase); 1841 return; 1842 1843 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1844 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1845 __func__, edge_serial->rxPort, byte3); 1846 /* Port->RxCheckRsp = true; */ 1847 return; 1848 } 1849 } 1850 1851 if (code == IOSP_STATUS_OPEN_RSP) { 1852 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1853 edge_port->maxTxCredits = edge_port->txCredits; 1854 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1855 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1856 handle_new_msr(edge_port, byte2); 1857 1858 /* send the current line settings to the port so we are 1859 in sync with any further termios calls */ 1860 tty = tty_port_tty_get(&edge_port->port->port); 1861 if (tty) { 1862 change_port_settings(tty, 1863 edge_port, &tty->termios); 1864 tty_kref_put(tty); 1865 } 1866 1867 /* we have completed the open */ 1868 edge_port->openPending = false; 1869 edge_port->open = true; 1870 wake_up(&edge_port->wait_open); 1871 return; 1872 } 1873 1874 /* If port is closed, silently discard all rcvd status. We can 1875 * have cases where buffered status is received AFTER the close 1876 * port command is sent to the Edgeport. 1877 */ 1878 if (!edge_port->open || edge_port->closePending) 1879 return; 1880 1881 switch (code) { 1882 /* Not currently sent by Edgeport */ 1883 case IOSP_STATUS_LSR: 1884 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1885 __func__, edge_serial->rxPort, byte2); 1886 handle_new_lsr(edge_port, false, byte2, 0); 1887 break; 1888 1889 case IOSP_STATUS_LSR_DATA: 1890 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1891 __func__, edge_serial->rxPort, byte2, byte3); 1892 /* byte2 is LSR Register */ 1893 /* byte3 is broken data byte */ 1894 handle_new_lsr(edge_port, true, byte2, byte3); 1895 break; 1896 /* 1897 * case IOSP_EXT_4_STATUS: 1898 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1899 * __func__, edge_serial->rxPort, byte2, byte3); 1900 * break; 1901 */ 1902 case IOSP_STATUS_MSR: 1903 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1904 __func__, edge_serial->rxPort, byte2); 1905 /* 1906 * Process this new modem status and generate appropriate 1907 * events, etc, based on the new status. This routine 1908 * also saves the MSR in Port->ShadowMsr. 1909 */ 1910 handle_new_msr(edge_port, byte2); 1911 break; 1912 1913 default: 1914 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1915 break; 1916 } 1917 } 1918 1919 1920 /***************************************************************************** 1921 * edge_tty_recv 1922 * this function passes data on to the tty flip buffer 1923 *****************************************************************************/ 1924 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1925 int length) 1926 { 1927 int cnt; 1928 1929 cnt = tty_insert_flip_string(&port->port, data, length); 1930 if (cnt < length) { 1931 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 1932 __func__, length - cnt); 1933 } 1934 data += cnt; 1935 length -= cnt; 1936 1937 tty_flip_buffer_push(&port->port); 1938 } 1939 1940 1941 /***************************************************************************** 1942 * handle_new_msr 1943 * this function handles any change to the msr register for a port. 1944 *****************************************************************************/ 1945 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 1946 { 1947 struct async_icount *icount; 1948 1949 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 1950 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 1951 icount = &edge_port->port->icount; 1952 1953 /* update input line counters */ 1954 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 1955 icount->cts++; 1956 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 1957 icount->dsr++; 1958 if (newMsr & EDGEPORT_MSR_DELTA_CD) 1959 icount->dcd++; 1960 if (newMsr & EDGEPORT_MSR_DELTA_RI) 1961 icount->rng++; 1962 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 1963 } 1964 1965 /* Save the new modem status */ 1966 edge_port->shadowMSR = newMsr & 0xf0; 1967 } 1968 1969 1970 /***************************************************************************** 1971 * handle_new_lsr 1972 * this function handles any change to the lsr register for a port. 1973 *****************************************************************************/ 1974 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 1975 __u8 lsr, __u8 data) 1976 { 1977 __u8 newLsr = (__u8) (lsr & (__u8) 1978 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 1979 struct async_icount *icount; 1980 1981 edge_port->shadowLSR = lsr; 1982 1983 if (newLsr & LSR_BREAK) { 1984 /* 1985 * Parity and Framing errors only count if they 1986 * occur exclusive of a break being 1987 * received. 1988 */ 1989 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 1990 } 1991 1992 /* Place LSR data byte into Rx buffer */ 1993 if (lsrData) 1994 edge_tty_recv(edge_port->port, &data, 1); 1995 1996 /* update input line counters */ 1997 icount = &edge_port->port->icount; 1998 if (newLsr & LSR_BREAK) 1999 icount->brk++; 2000 if (newLsr & LSR_OVER_ERR) 2001 icount->overrun++; 2002 if (newLsr & LSR_PAR_ERR) 2003 icount->parity++; 2004 if (newLsr & LSR_FRM_ERR) 2005 icount->frame++; 2006 } 2007 2008 2009 /**************************************************************************** 2010 * sram_write 2011 * writes a number of bytes to the Edgeport device's sram starting at the 2012 * given address. 2013 * If successful returns the number of bytes written, otherwise it returns 2014 * a negative error number of the problem. 2015 ****************************************************************************/ 2016 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2017 __u16 length, const __u8 *data) 2018 { 2019 int result; 2020 __u16 current_length; 2021 unsigned char *transfer_buffer; 2022 2023 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 2024 2025 transfer_buffer = kmalloc(64, GFP_KERNEL); 2026 if (!transfer_buffer) 2027 return -ENOMEM; 2028 2029 /* need to split these writes up into 64 byte chunks */ 2030 result = 0; 2031 while (length > 0) { 2032 if (length > 64) 2033 current_length = 64; 2034 else 2035 current_length = length; 2036 2037 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 2038 memcpy(transfer_buffer, data, current_length); 2039 result = usb_control_msg(serial->dev, 2040 usb_sndctrlpipe(serial->dev, 0), 2041 USB_REQUEST_ION_WRITE_RAM, 2042 0x40, addr, extAddr, transfer_buffer, 2043 current_length, 300); 2044 if (result < 0) 2045 break; 2046 length -= current_length; 2047 addr += current_length; 2048 data += current_length; 2049 } 2050 2051 kfree(transfer_buffer); 2052 return result; 2053 } 2054 2055 2056 /**************************************************************************** 2057 * rom_write 2058 * writes a number of bytes to the Edgeport device's ROM starting at the 2059 * given address. 2060 * If successful returns the number of bytes written, otherwise it returns 2061 * a negative error number of the problem. 2062 ****************************************************************************/ 2063 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2064 __u16 length, const __u8 *data) 2065 { 2066 int result; 2067 __u16 current_length; 2068 unsigned char *transfer_buffer; 2069 2070 transfer_buffer = kmalloc(64, GFP_KERNEL); 2071 if (!transfer_buffer) 2072 return -ENOMEM; 2073 2074 /* need to split these writes up into 64 byte chunks */ 2075 result = 0; 2076 while (length > 0) { 2077 if (length > 64) 2078 current_length = 64; 2079 else 2080 current_length = length; 2081 memcpy(transfer_buffer, data, current_length); 2082 result = usb_control_msg(serial->dev, 2083 usb_sndctrlpipe(serial->dev, 0), 2084 USB_REQUEST_ION_WRITE_ROM, 0x40, 2085 addr, extAddr, 2086 transfer_buffer, current_length, 300); 2087 if (result < 0) 2088 break; 2089 length -= current_length; 2090 addr += current_length; 2091 data += current_length; 2092 } 2093 2094 kfree(transfer_buffer); 2095 return result; 2096 } 2097 2098 2099 /**************************************************************************** 2100 * rom_read 2101 * reads a number of bytes from the Edgeport device starting at the given 2102 * address. 2103 * Returns zero on success or a negative error number. 2104 ****************************************************************************/ 2105 static int rom_read(struct usb_serial *serial, __u16 extAddr, 2106 __u16 addr, __u16 length, __u8 *data) 2107 { 2108 int result; 2109 __u16 current_length; 2110 unsigned char *transfer_buffer; 2111 2112 transfer_buffer = kmalloc(64, GFP_KERNEL); 2113 if (!transfer_buffer) 2114 return -ENOMEM; 2115 2116 /* need to split these reads up into 64 byte chunks */ 2117 result = 0; 2118 while (length > 0) { 2119 if (length > 64) 2120 current_length = 64; 2121 else 2122 current_length = length; 2123 result = usb_control_msg(serial->dev, 2124 usb_rcvctrlpipe(serial->dev, 0), 2125 USB_REQUEST_ION_READ_ROM, 2126 0xC0, addr, extAddr, transfer_buffer, 2127 current_length, 300); 2128 if (result < current_length) { 2129 if (result >= 0) 2130 result = -EIO; 2131 break; 2132 } 2133 memcpy(data, transfer_buffer, current_length); 2134 length -= current_length; 2135 addr += current_length; 2136 data += current_length; 2137 2138 result = 0; 2139 } 2140 2141 kfree(transfer_buffer); 2142 return result; 2143 } 2144 2145 2146 /**************************************************************************** 2147 * send_iosp_ext_cmd 2148 * Is used to send a IOSP message to the Edgeport device 2149 ****************************************************************************/ 2150 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2151 __u8 command, __u8 param) 2152 { 2153 unsigned char *buffer; 2154 unsigned char *currentCommand; 2155 int length = 0; 2156 int status = 0; 2157 2158 buffer = kmalloc(10, GFP_ATOMIC); 2159 if (!buffer) 2160 return -ENOMEM; 2161 2162 currentCommand = buffer; 2163 2164 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2165 command, param); 2166 2167 status = write_cmd_usb(edge_port, buffer, length); 2168 if (status) { 2169 /* something bad happened, let's free up the memory */ 2170 kfree(buffer); 2171 } 2172 2173 return status; 2174 } 2175 2176 2177 /***************************************************************************** 2178 * write_cmd_usb 2179 * this function writes the given buffer out to the bulk write endpoint. 2180 *****************************************************************************/ 2181 static int write_cmd_usb(struct edgeport_port *edge_port, 2182 unsigned char *buffer, int length) 2183 { 2184 struct edgeport_serial *edge_serial = 2185 usb_get_serial_data(edge_port->port->serial); 2186 struct device *dev = &edge_port->port->dev; 2187 int status = 0; 2188 struct urb *urb; 2189 2190 usb_serial_debug_data(dev, __func__, length, buffer); 2191 2192 /* Allocate our next urb */ 2193 urb = usb_alloc_urb(0, GFP_ATOMIC); 2194 if (!urb) 2195 return -ENOMEM; 2196 2197 atomic_inc(&CmdUrbs); 2198 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2199 __func__, urb, atomic_read(&CmdUrbs)); 2200 2201 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2202 usb_sndbulkpipe(edge_serial->serial->dev, 2203 edge_serial->bulk_out_endpoint), 2204 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2205 2206 edge_port->commandPending = true; 2207 status = usb_submit_urb(urb, GFP_ATOMIC); 2208 2209 if (status) { 2210 /* something went wrong */ 2211 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2212 __func__, status); 2213 usb_free_urb(urb); 2214 atomic_dec(&CmdUrbs); 2215 return status; 2216 } 2217 2218 #if 0 2219 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2220 2221 if (edge_port->commandPending) { 2222 /* command timed out */ 2223 dev_dbg(dev, "%s - command timed out\n", __func__); 2224 status = -EINVAL; 2225 } 2226 #endif 2227 return status; 2228 } 2229 2230 2231 /***************************************************************************** 2232 * send_cmd_write_baud_rate 2233 * this function sends the proper command to change the baud rate of the 2234 * specified port. 2235 *****************************************************************************/ 2236 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2237 int baudRate) 2238 { 2239 struct edgeport_serial *edge_serial = 2240 usb_get_serial_data(edge_port->port->serial); 2241 struct device *dev = &edge_port->port->dev; 2242 unsigned char *cmdBuffer; 2243 unsigned char *currCmd; 2244 int cmdLen = 0; 2245 int divisor; 2246 int status; 2247 u32 number = edge_port->port->port_number; 2248 2249 if (edge_serial->is_epic && 2250 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2251 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2252 baudRate); 2253 return 0; 2254 } 2255 2256 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2257 2258 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2259 if (status) { 2260 dev_err(dev, "%s - bad baud rate\n", __func__); 2261 return status; 2262 } 2263 2264 /* Alloc memory for the string of commands. */ 2265 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2266 if (!cmdBuffer) 2267 return -ENOMEM; 2268 2269 currCmd = cmdBuffer; 2270 2271 /* Enable access to divisor latch */ 2272 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2273 2274 /* Write the divisor itself */ 2275 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2276 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2277 2278 /* Restore original value to disable access to divisor latch */ 2279 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2280 edge_port->shadowLCR); 2281 2282 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2283 if (status) { 2284 /* something bad happened, let's free up the memory */ 2285 kfree(cmdBuffer); 2286 } 2287 2288 return status; 2289 } 2290 2291 2292 /***************************************************************************** 2293 * calc_baud_rate_divisor 2294 * this function calculates the proper baud rate divisor for the specified 2295 * baud rate. 2296 *****************************************************************************/ 2297 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2298 { 2299 int i; 2300 __u16 custom; 2301 2302 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2303 if (divisor_table[i].BaudRate == baudrate) { 2304 *divisor = divisor_table[i].Divisor; 2305 return 0; 2306 } 2307 } 2308 2309 /* We have tried all of the standard baud rates 2310 * lets try to calculate the divisor for this baud rate 2311 * Make sure the baud rate is reasonable */ 2312 if (baudrate > 50 && baudrate < 230400) { 2313 /* get divisor */ 2314 custom = (__u16)((230400L + baudrate/2) / baudrate); 2315 2316 *divisor = custom; 2317 2318 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2319 return 0; 2320 } 2321 2322 return -1; 2323 } 2324 2325 2326 /***************************************************************************** 2327 * send_cmd_write_uart_register 2328 * this function builds up a uart register message and sends to the device. 2329 *****************************************************************************/ 2330 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2331 __u8 regNum, __u8 regValue) 2332 { 2333 struct edgeport_serial *edge_serial = 2334 usb_get_serial_data(edge_port->port->serial); 2335 struct device *dev = &edge_port->port->dev; 2336 unsigned char *cmdBuffer; 2337 unsigned char *currCmd; 2338 unsigned long cmdLen = 0; 2339 int status; 2340 2341 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2342 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2343 2344 if (edge_serial->is_epic && 2345 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2346 regNum == MCR) { 2347 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2348 return 0; 2349 } 2350 2351 if (edge_serial->is_epic && 2352 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2353 regNum == LCR) { 2354 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2355 return 0; 2356 } 2357 2358 /* Alloc memory for the string of commands. */ 2359 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2360 if (cmdBuffer == NULL) 2361 return -ENOMEM; 2362 2363 currCmd = cmdBuffer; 2364 2365 /* Build a cmd in the buffer to write the given register */ 2366 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2367 regNum, regValue); 2368 2369 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2370 if (status) { 2371 /* something bad happened, let's free up the memory */ 2372 kfree(cmdBuffer); 2373 } 2374 2375 return status; 2376 } 2377 2378 2379 /***************************************************************************** 2380 * change_port_settings 2381 * This routine is called to set the UART on the device to match the 2382 * specified new settings. 2383 *****************************************************************************/ 2384 2385 static void change_port_settings(struct tty_struct *tty, 2386 struct edgeport_port *edge_port, struct ktermios *old_termios) 2387 { 2388 struct device *dev = &edge_port->port->dev; 2389 struct edgeport_serial *edge_serial = 2390 usb_get_serial_data(edge_port->port->serial); 2391 int baud; 2392 unsigned cflag; 2393 __u8 mask = 0xff; 2394 __u8 lData; 2395 __u8 lParity; 2396 __u8 lStop; 2397 __u8 rxFlow; 2398 __u8 txFlow; 2399 int status; 2400 2401 if (!edge_port->open && 2402 !edge_port->openPending) { 2403 dev_dbg(dev, "%s - port not opened\n", __func__); 2404 return; 2405 } 2406 2407 cflag = tty->termios.c_cflag; 2408 2409 switch (cflag & CSIZE) { 2410 case CS5: 2411 lData = LCR_BITS_5; mask = 0x1f; 2412 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2413 break; 2414 case CS6: 2415 lData = LCR_BITS_6; mask = 0x3f; 2416 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2417 break; 2418 case CS7: 2419 lData = LCR_BITS_7; mask = 0x7f; 2420 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2421 break; 2422 default: 2423 case CS8: 2424 lData = LCR_BITS_8; 2425 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2426 break; 2427 } 2428 2429 lParity = LCR_PAR_NONE; 2430 if (cflag & PARENB) { 2431 if (cflag & CMSPAR) { 2432 if (cflag & PARODD) { 2433 lParity = LCR_PAR_MARK; 2434 dev_dbg(dev, "%s - parity = mark\n", __func__); 2435 } else { 2436 lParity = LCR_PAR_SPACE; 2437 dev_dbg(dev, "%s - parity = space\n", __func__); 2438 } 2439 } else if (cflag & PARODD) { 2440 lParity = LCR_PAR_ODD; 2441 dev_dbg(dev, "%s - parity = odd\n", __func__); 2442 } else { 2443 lParity = LCR_PAR_EVEN; 2444 dev_dbg(dev, "%s - parity = even\n", __func__); 2445 } 2446 } else { 2447 dev_dbg(dev, "%s - parity = none\n", __func__); 2448 } 2449 2450 if (cflag & CSTOPB) { 2451 lStop = LCR_STOP_2; 2452 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2453 } else { 2454 lStop = LCR_STOP_1; 2455 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2456 } 2457 2458 /* figure out the flow control settings */ 2459 rxFlow = txFlow = 0x00; 2460 if (cflag & CRTSCTS) { 2461 rxFlow |= IOSP_RX_FLOW_RTS; 2462 txFlow |= IOSP_TX_FLOW_CTS; 2463 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2464 } else { 2465 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2466 } 2467 2468 /* if we are implementing XON/XOFF, set the start and stop character 2469 in the device */ 2470 if (I_IXOFF(tty) || I_IXON(tty)) { 2471 unsigned char stop_char = STOP_CHAR(tty); 2472 unsigned char start_char = START_CHAR(tty); 2473 2474 if (!edge_serial->is_epic || 2475 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2476 send_iosp_ext_cmd(edge_port, 2477 IOSP_CMD_SET_XON_CHAR, start_char); 2478 send_iosp_ext_cmd(edge_port, 2479 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2480 } 2481 2482 /* if we are implementing INBOUND XON/XOFF */ 2483 if (I_IXOFF(tty)) { 2484 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2485 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2486 __func__, start_char, stop_char); 2487 } else { 2488 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2489 } 2490 2491 /* if we are implementing OUTBOUND XON/XOFF */ 2492 if (I_IXON(tty)) { 2493 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2494 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2495 __func__, start_char, stop_char); 2496 } else { 2497 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2498 } 2499 } 2500 2501 /* Set flow control to the configured value */ 2502 if (!edge_serial->is_epic || 2503 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2504 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2505 if (!edge_serial->is_epic || 2506 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2507 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2508 2509 2510 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2511 edge_port->shadowLCR |= (lData | lParity | lStop); 2512 2513 edge_port->validDataMask = mask; 2514 2515 /* Send the updated LCR value to the EdgePort */ 2516 status = send_cmd_write_uart_register(edge_port, LCR, 2517 edge_port->shadowLCR); 2518 if (status != 0) 2519 return; 2520 2521 /* set up the MCR register and send it to the EdgePort */ 2522 edge_port->shadowMCR = MCR_MASTER_IE; 2523 if (cflag & CBAUD) 2524 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2525 2526 status = send_cmd_write_uart_register(edge_port, MCR, 2527 edge_port->shadowMCR); 2528 if (status != 0) 2529 return; 2530 2531 /* Determine divisor based on baud rate */ 2532 baud = tty_get_baud_rate(tty); 2533 if (!baud) { 2534 /* pick a default, any default... */ 2535 baud = 9600; 2536 } 2537 2538 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2539 status = send_cmd_write_baud_rate(edge_port, baud); 2540 if (status == -1) { 2541 /* Speed change was not possible - put back the old speed */ 2542 baud = tty_termios_baud_rate(old_termios); 2543 tty_encode_baud_rate(tty, baud, baud); 2544 } 2545 } 2546 2547 2548 /**************************************************************************** 2549 * unicode_to_ascii 2550 * Turns a string from Unicode into ASCII. 2551 * Doesn't do a good job with any characters that are outside the normal 2552 * ASCII range, but it's only for debugging... 2553 * NOTE: expects the unicode in LE format 2554 ****************************************************************************/ 2555 static void unicode_to_ascii(char *string, int buflen, 2556 __le16 *unicode, int unicode_size) 2557 { 2558 int i; 2559 2560 if (buflen <= 0) /* never happens, but... */ 2561 return; 2562 --buflen; /* space for nul */ 2563 2564 for (i = 0; i < unicode_size; i++) { 2565 if (i >= buflen) 2566 break; 2567 string[i] = (char)(le16_to_cpu(unicode[i])); 2568 } 2569 string[i] = 0x00; 2570 } 2571 2572 2573 /**************************************************************************** 2574 * get_manufacturing_desc 2575 * reads in the manufacturing descriptor and stores it into the serial 2576 * structure. 2577 ****************************************************************************/ 2578 static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2579 { 2580 struct device *dev = &edge_serial->serial->dev->dev; 2581 int response; 2582 2583 dev_dbg(dev, "getting manufacturer descriptor\n"); 2584 2585 response = rom_read(edge_serial->serial, 2586 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2587 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2588 EDGE_MANUF_DESC_LEN, 2589 (__u8 *)(&edge_serial->manuf_descriptor)); 2590 2591 if (response < 0) { 2592 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2593 response); 2594 } else { 2595 char string[30]; 2596 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2597 dev_dbg(dev, " RomSize: %dK\n", 2598 edge_serial->manuf_descriptor.RomSize); 2599 dev_dbg(dev, " RamSize: %dK\n", 2600 edge_serial->manuf_descriptor.RamSize); 2601 dev_dbg(dev, " CpuRev: %d\n", 2602 edge_serial->manuf_descriptor.CpuRev); 2603 dev_dbg(dev, " BoardRev: %d\n", 2604 edge_serial->manuf_descriptor.BoardRev); 2605 dev_dbg(dev, " NumPorts: %d\n", 2606 edge_serial->manuf_descriptor.NumPorts); 2607 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2608 edge_serial->manuf_descriptor.DescDate[0], 2609 edge_serial->manuf_descriptor.DescDate[1], 2610 edge_serial->manuf_descriptor.DescDate[2]+1900); 2611 unicode_to_ascii(string, sizeof(string), 2612 edge_serial->manuf_descriptor.SerialNumber, 2613 edge_serial->manuf_descriptor.SerNumLength/2); 2614 dev_dbg(dev, " SerialNumber: %s\n", string); 2615 unicode_to_ascii(string, sizeof(string), 2616 edge_serial->manuf_descriptor.AssemblyNumber, 2617 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2618 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2619 unicode_to_ascii(string, sizeof(string), 2620 edge_serial->manuf_descriptor.OemAssyNumber, 2621 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2622 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2623 dev_dbg(dev, " UartType: %d\n", 2624 edge_serial->manuf_descriptor.UartType); 2625 dev_dbg(dev, " IonPid: %d\n", 2626 edge_serial->manuf_descriptor.IonPid); 2627 dev_dbg(dev, " IonConfig: %d\n", 2628 edge_serial->manuf_descriptor.IonConfig); 2629 } 2630 } 2631 2632 2633 /**************************************************************************** 2634 * get_boot_desc 2635 * reads in the bootloader descriptor and stores it into the serial 2636 * structure. 2637 ****************************************************************************/ 2638 static void get_boot_desc(struct edgeport_serial *edge_serial) 2639 { 2640 struct device *dev = &edge_serial->serial->dev->dev; 2641 int response; 2642 2643 dev_dbg(dev, "getting boot descriptor\n"); 2644 2645 response = rom_read(edge_serial->serial, 2646 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2647 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2648 EDGE_BOOT_DESC_LEN, 2649 (__u8 *)(&edge_serial->boot_descriptor)); 2650 2651 if (response < 0) { 2652 dev_err(dev, "error in getting boot descriptor: %d\n", 2653 response); 2654 } else { 2655 dev_dbg(dev, "**Boot Descriptor:\n"); 2656 dev_dbg(dev, " BootCodeLength: %d\n", 2657 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2658 dev_dbg(dev, " MajorVersion: %d\n", 2659 edge_serial->boot_descriptor.MajorVersion); 2660 dev_dbg(dev, " MinorVersion: %d\n", 2661 edge_serial->boot_descriptor.MinorVersion); 2662 dev_dbg(dev, " BuildNumber: %d\n", 2663 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2664 dev_dbg(dev, " Capabilities: 0x%x\n", 2665 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2666 dev_dbg(dev, " UConfig0: %d\n", 2667 edge_serial->boot_descriptor.UConfig0); 2668 dev_dbg(dev, " UConfig1: %d\n", 2669 edge_serial->boot_descriptor.UConfig1); 2670 } 2671 } 2672 2673 2674 /**************************************************************************** 2675 * load_application_firmware 2676 * This is called to load the application firmware to the device 2677 ****************************************************************************/ 2678 static void load_application_firmware(struct edgeport_serial *edge_serial) 2679 { 2680 struct device *dev = &edge_serial->serial->dev->dev; 2681 const struct ihex_binrec *rec; 2682 const struct firmware *fw; 2683 const char *fw_name; 2684 const char *fw_info; 2685 int response; 2686 __u32 Operaddr; 2687 __u16 build; 2688 2689 switch (edge_serial->product_info.iDownloadFile) { 2690 case EDGE_DOWNLOAD_FILE_I930: 2691 fw_info = "downloading firmware version (930)"; 2692 fw_name = "edgeport/down.fw"; 2693 break; 2694 2695 case EDGE_DOWNLOAD_FILE_80251: 2696 fw_info = "downloading firmware version (80251)"; 2697 fw_name = "edgeport/down2.fw"; 2698 break; 2699 2700 case EDGE_DOWNLOAD_FILE_NONE: 2701 dev_dbg(dev, "No download file specified, skipping download\n"); 2702 return; 2703 2704 default: 2705 return; 2706 } 2707 2708 response = request_ihex_firmware(&fw, fw_name, 2709 &edge_serial->serial->dev->dev); 2710 if (response) { 2711 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2712 fw_name, response); 2713 return; 2714 } 2715 2716 rec = (const struct ihex_binrec *)fw->data; 2717 build = (rec->data[2] << 8) | rec->data[3]; 2718 2719 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2720 2721 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2722 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2723 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2724 2725 for (rec = ihex_next_binrec(rec); rec; 2726 rec = ihex_next_binrec(rec)) { 2727 Operaddr = be32_to_cpu(rec->addr); 2728 response = sram_write(edge_serial->serial, 2729 Operaddr >> 16, 2730 Operaddr & 0xFFFF, 2731 be16_to_cpu(rec->len), 2732 &rec->data[0]); 2733 if (response < 0) { 2734 dev_err(&edge_serial->serial->dev->dev, 2735 "sram_write failed (%x, %x, %d)\n", 2736 Operaddr >> 16, Operaddr & 0xFFFF, 2737 be16_to_cpu(rec->len)); 2738 break; 2739 } 2740 } 2741 2742 dev_dbg(dev, "sending exec_dl_code\n"); 2743 response = usb_control_msg (edge_serial->serial->dev, 2744 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2745 USB_REQUEST_ION_EXEC_DL_CODE, 2746 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2747 2748 release_firmware(fw); 2749 } 2750 2751 2752 /**************************************************************************** 2753 * edge_startup 2754 ****************************************************************************/ 2755 static int edge_startup(struct usb_serial *serial) 2756 { 2757 struct edgeport_serial *edge_serial; 2758 struct usb_device *dev; 2759 struct device *ddev = &serial->dev->dev; 2760 int i; 2761 int response; 2762 bool interrupt_in_found; 2763 bool bulk_in_found; 2764 bool bulk_out_found; 2765 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2766 EDGE_COMPATIBILITY_MASK1, 2767 EDGE_COMPATIBILITY_MASK2 }; 2768 2769 dev = serial->dev; 2770 2771 /* create our private serial structure */ 2772 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2773 if (!edge_serial) 2774 return -ENOMEM; 2775 2776 spin_lock_init(&edge_serial->es_lock); 2777 edge_serial->serial = serial; 2778 usb_set_serial_data(serial, edge_serial); 2779 2780 /* get the name for the device from the device */ 2781 i = usb_string(dev, dev->descriptor.iManufacturer, 2782 &edge_serial->name[0], MAX_NAME_LEN+1); 2783 if (i < 0) 2784 i = 0; 2785 edge_serial->name[i++] = ' '; 2786 usb_string(dev, dev->descriptor.iProduct, 2787 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2788 2789 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2790 2791 /* Read the epic descriptor */ 2792 if (get_epic_descriptor(edge_serial) < 0) { 2793 /* memcpy descriptor to Supports structures */ 2794 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2795 sizeof(struct edge_compatibility_bits)); 2796 2797 /* get the manufacturing descriptor for this device */ 2798 get_manufacturing_desc(edge_serial); 2799 2800 /* get the boot descriptor */ 2801 get_boot_desc(edge_serial); 2802 2803 get_product_info(edge_serial); 2804 } 2805 2806 /* set the number of ports from the manufacturing description */ 2807 /* serial->num_ports = serial->product_info.NumPorts; */ 2808 if ((!edge_serial->is_epic) && 2809 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2810 dev_warn(ddev, 2811 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2812 edge_serial->product_info.NumPorts, 2813 serial->num_ports); 2814 } 2815 2816 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2817 2818 /* If not an EPiC device */ 2819 if (!edge_serial->is_epic) { 2820 /* now load the application firmware into this device */ 2821 load_application_firmware(edge_serial); 2822 2823 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2824 2825 /* Check current Edgeport EEPROM and update if necessary */ 2826 update_edgeport_E2PROM(edge_serial); 2827 2828 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2829 2830 /* set the configuration to use #1 */ 2831 /* dev_dbg(ddev, "set_configuration 1\n"); */ 2832 /* usb_set_configuration (dev, 1); */ 2833 } 2834 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2835 edge_serial->product_info.FirmwareMajorVersion, 2836 edge_serial->product_info.FirmwareMinorVersion, 2837 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2838 2839 /* we set up the pointers to the endpoints in the edge_open function, 2840 * as the structures aren't created yet. */ 2841 2842 response = 0; 2843 2844 if (edge_serial->is_epic) { 2845 struct usb_host_interface *alt; 2846 2847 alt = serial->interface->cur_altsetting; 2848 2849 /* EPIC thing, set up our interrupt polling now and our read 2850 * urb, so that the device knows it really is connected. */ 2851 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2852 for (i = 0; i < alt->desc.bNumEndpoints; ++i) { 2853 struct usb_endpoint_descriptor *endpoint; 2854 int buffer_size; 2855 2856 endpoint = &alt->endpoint[i].desc; 2857 buffer_size = usb_endpoint_maxp(endpoint); 2858 if (!interrupt_in_found && 2859 (usb_endpoint_is_int_in(endpoint))) { 2860 /* we found a interrupt in endpoint */ 2861 dev_dbg(ddev, "found interrupt in\n"); 2862 2863 /* not set up yet, so do it now */ 2864 edge_serial->interrupt_read_urb = 2865 usb_alloc_urb(0, GFP_KERNEL); 2866 if (!edge_serial->interrupt_read_urb) { 2867 response = -ENOMEM; 2868 break; 2869 } 2870 2871 edge_serial->interrupt_in_buffer = 2872 kmalloc(buffer_size, GFP_KERNEL); 2873 if (!edge_serial->interrupt_in_buffer) { 2874 response = -ENOMEM; 2875 break; 2876 } 2877 edge_serial->interrupt_in_endpoint = 2878 endpoint->bEndpointAddress; 2879 2880 /* set up our interrupt urb */ 2881 usb_fill_int_urb( 2882 edge_serial->interrupt_read_urb, 2883 dev, 2884 usb_rcvintpipe(dev, 2885 endpoint->bEndpointAddress), 2886 edge_serial->interrupt_in_buffer, 2887 buffer_size, 2888 edge_interrupt_callback, 2889 edge_serial, 2890 endpoint->bInterval); 2891 2892 interrupt_in_found = true; 2893 } 2894 2895 if (!bulk_in_found && 2896 (usb_endpoint_is_bulk_in(endpoint))) { 2897 /* we found a bulk in endpoint */ 2898 dev_dbg(ddev, "found bulk in\n"); 2899 2900 /* not set up yet, so do it now */ 2901 edge_serial->read_urb = 2902 usb_alloc_urb(0, GFP_KERNEL); 2903 if (!edge_serial->read_urb) { 2904 response = -ENOMEM; 2905 break; 2906 } 2907 2908 edge_serial->bulk_in_buffer = 2909 kmalloc(buffer_size, GFP_KERNEL); 2910 if (!edge_serial->bulk_in_buffer) { 2911 response = -ENOMEM; 2912 break; 2913 } 2914 edge_serial->bulk_in_endpoint = 2915 endpoint->bEndpointAddress; 2916 2917 /* set up our bulk in urb */ 2918 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2919 usb_rcvbulkpipe(dev, 2920 endpoint->bEndpointAddress), 2921 edge_serial->bulk_in_buffer, 2922 usb_endpoint_maxp(endpoint), 2923 edge_bulk_in_callback, 2924 edge_serial); 2925 bulk_in_found = true; 2926 } 2927 2928 if (!bulk_out_found && 2929 (usb_endpoint_is_bulk_out(endpoint))) { 2930 /* we found a bulk out endpoint */ 2931 dev_dbg(ddev, "found bulk out\n"); 2932 edge_serial->bulk_out_endpoint = 2933 endpoint->bEndpointAddress; 2934 bulk_out_found = true; 2935 } 2936 } 2937 2938 if (response || !interrupt_in_found || !bulk_in_found || 2939 !bulk_out_found) { 2940 if (!response) { 2941 dev_err(ddev, "expected endpoints not found\n"); 2942 response = -ENODEV; 2943 } 2944 2945 goto error; 2946 } 2947 2948 /* start interrupt read for this edgeport this interrupt will 2949 * continue as long as the edgeport is connected */ 2950 response = usb_submit_urb(edge_serial->interrupt_read_urb, 2951 GFP_KERNEL); 2952 if (response) { 2953 dev_err(ddev, "%s - Error %d submitting control urb\n", 2954 __func__, response); 2955 2956 goto error; 2957 } 2958 } 2959 return response; 2960 2961 error: 2962 usb_free_urb(edge_serial->interrupt_read_urb); 2963 kfree(edge_serial->interrupt_in_buffer); 2964 2965 usb_free_urb(edge_serial->read_urb); 2966 kfree(edge_serial->bulk_in_buffer); 2967 2968 kfree(edge_serial); 2969 2970 return response; 2971 } 2972 2973 2974 /**************************************************************************** 2975 * edge_disconnect 2976 * This function is called whenever the device is removed from the usb bus. 2977 ****************************************************************************/ 2978 static void edge_disconnect(struct usb_serial *serial) 2979 { 2980 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2981 2982 if (edge_serial->is_epic) { 2983 usb_kill_urb(edge_serial->interrupt_read_urb); 2984 usb_kill_urb(edge_serial->read_urb); 2985 } 2986 } 2987 2988 2989 /**************************************************************************** 2990 * edge_release 2991 * This function is called when the device structure is deallocated. 2992 ****************************************************************************/ 2993 static void edge_release(struct usb_serial *serial) 2994 { 2995 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 2996 2997 if (edge_serial->is_epic) { 2998 usb_kill_urb(edge_serial->interrupt_read_urb); 2999 usb_free_urb(edge_serial->interrupt_read_urb); 3000 kfree(edge_serial->interrupt_in_buffer); 3001 3002 usb_kill_urb(edge_serial->read_urb); 3003 usb_free_urb(edge_serial->read_urb); 3004 kfree(edge_serial->bulk_in_buffer); 3005 } 3006 3007 kfree(edge_serial); 3008 } 3009 3010 static int edge_port_probe(struct usb_serial_port *port) 3011 { 3012 struct edgeport_port *edge_port; 3013 3014 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 3015 if (!edge_port) 3016 return -ENOMEM; 3017 3018 spin_lock_init(&edge_port->ep_lock); 3019 edge_port->port = port; 3020 3021 usb_set_serial_port_data(port, edge_port); 3022 3023 return 0; 3024 } 3025 3026 static void edge_port_remove(struct usb_serial_port *port) 3027 { 3028 struct edgeport_port *edge_port; 3029 3030 edge_port = usb_get_serial_port_data(port); 3031 kfree(edge_port); 3032 } 3033 3034 static struct usb_serial_driver edgeport_2port_device = { 3035 .driver = { 3036 .owner = THIS_MODULE, 3037 .name = "edgeport_2", 3038 }, 3039 .description = "Edgeport 2 port adapter", 3040 .id_table = edgeport_2port_id_table, 3041 .num_ports = 2, 3042 .num_bulk_in = 1, 3043 .num_bulk_out = 1, 3044 .num_interrupt_in = 1, 3045 .open = edge_open, 3046 .close = edge_close, 3047 .throttle = edge_throttle, 3048 .unthrottle = edge_unthrottle, 3049 .attach = edge_startup, 3050 .disconnect = edge_disconnect, 3051 .release = edge_release, 3052 .port_probe = edge_port_probe, 3053 .port_remove = edge_port_remove, 3054 .ioctl = edge_ioctl, 3055 .set_termios = edge_set_termios, 3056 .tiocmget = edge_tiocmget, 3057 .tiocmset = edge_tiocmset, 3058 .tiocmiwait = usb_serial_generic_tiocmiwait, 3059 .get_icount = usb_serial_generic_get_icount, 3060 .write = edge_write, 3061 .write_room = edge_write_room, 3062 .chars_in_buffer = edge_chars_in_buffer, 3063 .break_ctl = edge_break, 3064 .read_int_callback = edge_interrupt_callback, 3065 .read_bulk_callback = edge_bulk_in_callback, 3066 .write_bulk_callback = edge_bulk_out_data_callback, 3067 }; 3068 3069 static struct usb_serial_driver edgeport_4port_device = { 3070 .driver = { 3071 .owner = THIS_MODULE, 3072 .name = "edgeport_4", 3073 }, 3074 .description = "Edgeport 4 port adapter", 3075 .id_table = edgeport_4port_id_table, 3076 .num_ports = 4, 3077 .num_bulk_in = 1, 3078 .num_bulk_out = 1, 3079 .num_interrupt_in = 1, 3080 .open = edge_open, 3081 .close = edge_close, 3082 .throttle = edge_throttle, 3083 .unthrottle = edge_unthrottle, 3084 .attach = edge_startup, 3085 .disconnect = edge_disconnect, 3086 .release = edge_release, 3087 .port_probe = edge_port_probe, 3088 .port_remove = edge_port_remove, 3089 .ioctl = edge_ioctl, 3090 .set_termios = edge_set_termios, 3091 .tiocmget = edge_tiocmget, 3092 .tiocmset = edge_tiocmset, 3093 .tiocmiwait = usb_serial_generic_tiocmiwait, 3094 .get_icount = usb_serial_generic_get_icount, 3095 .write = edge_write, 3096 .write_room = edge_write_room, 3097 .chars_in_buffer = edge_chars_in_buffer, 3098 .break_ctl = edge_break, 3099 .read_int_callback = edge_interrupt_callback, 3100 .read_bulk_callback = edge_bulk_in_callback, 3101 .write_bulk_callback = edge_bulk_out_data_callback, 3102 }; 3103 3104 static struct usb_serial_driver edgeport_8port_device = { 3105 .driver = { 3106 .owner = THIS_MODULE, 3107 .name = "edgeport_8", 3108 }, 3109 .description = "Edgeport 8 port adapter", 3110 .id_table = edgeport_8port_id_table, 3111 .num_ports = 8, 3112 .num_bulk_in = 1, 3113 .num_bulk_out = 1, 3114 .num_interrupt_in = 1, 3115 .open = edge_open, 3116 .close = edge_close, 3117 .throttle = edge_throttle, 3118 .unthrottle = edge_unthrottle, 3119 .attach = edge_startup, 3120 .disconnect = edge_disconnect, 3121 .release = edge_release, 3122 .port_probe = edge_port_probe, 3123 .port_remove = edge_port_remove, 3124 .ioctl = edge_ioctl, 3125 .set_termios = edge_set_termios, 3126 .tiocmget = edge_tiocmget, 3127 .tiocmset = edge_tiocmset, 3128 .tiocmiwait = usb_serial_generic_tiocmiwait, 3129 .get_icount = usb_serial_generic_get_icount, 3130 .write = edge_write, 3131 .write_room = edge_write_room, 3132 .chars_in_buffer = edge_chars_in_buffer, 3133 .break_ctl = edge_break, 3134 .read_int_callback = edge_interrupt_callback, 3135 .read_bulk_callback = edge_bulk_in_callback, 3136 .write_bulk_callback = edge_bulk_out_data_callback, 3137 }; 3138 3139 static struct usb_serial_driver epic_device = { 3140 .driver = { 3141 .owner = THIS_MODULE, 3142 .name = "epic", 3143 }, 3144 .description = "EPiC device", 3145 .id_table = Epic_port_id_table, 3146 .num_ports = 1, 3147 .num_bulk_in = 1, 3148 .num_bulk_out = 1, 3149 .num_interrupt_in = 1, 3150 .open = edge_open, 3151 .close = edge_close, 3152 .throttle = edge_throttle, 3153 .unthrottle = edge_unthrottle, 3154 .attach = edge_startup, 3155 .disconnect = edge_disconnect, 3156 .release = edge_release, 3157 .port_probe = edge_port_probe, 3158 .port_remove = edge_port_remove, 3159 .ioctl = edge_ioctl, 3160 .set_termios = edge_set_termios, 3161 .tiocmget = edge_tiocmget, 3162 .tiocmset = edge_tiocmset, 3163 .tiocmiwait = usb_serial_generic_tiocmiwait, 3164 .get_icount = usb_serial_generic_get_icount, 3165 .write = edge_write, 3166 .write_room = edge_write_room, 3167 .chars_in_buffer = edge_chars_in_buffer, 3168 .break_ctl = edge_break, 3169 .read_int_callback = edge_interrupt_callback, 3170 .read_bulk_callback = edge_bulk_in_callback, 3171 .write_bulk_callback = edge_bulk_out_data_callback, 3172 }; 3173 3174 static struct usb_serial_driver * const serial_drivers[] = { 3175 &edgeport_2port_device, &edgeport_4port_device, 3176 &edgeport_8port_device, &epic_device, NULL 3177 }; 3178 3179 module_usb_serial_driver(serial_drivers, id_table_combined); 3180 3181 MODULE_AUTHOR(DRIVER_AUTHOR); 3182 MODULE_DESCRIPTION(DRIVER_DESC); 3183 MODULE_LICENSE("GPL"); 3184 MODULE_FIRMWARE("edgeport/boot.fw"); 3185 MODULE_FIRMWARE("edgeport/boot2.fw"); 3186 MODULE_FIRMWARE("edgeport/down.fw"); 3187 MODULE_FIRMWARE("edgeport/down2.fw"); 3188