1 /* 2 * Edgeport USB Serial Converter driver 3 * 4 * Copyright (C) 2000 Inside Out Networks, All rights reserved. 5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * Supports the following devices: 13 * Edgeport/4 14 * Edgeport/4t 15 * Edgeport/2 16 * Edgeport/4i 17 * Edgeport/2i 18 * Edgeport/421 19 * Edgeport/21 20 * Rapidport/4 21 * Edgeport/8 22 * Edgeport/2D8 23 * Edgeport/4D8 24 * Edgeport/8i 25 * 26 * For questions or problems with this driver, contact Inside Out 27 * Networks technical support, or Peter Berger <pberger@brimson.com>, 28 * or Al Borchers <alborchers@steinerpoint.com>. 29 * 30 */ 31 32 #include <linux/kernel.h> 33 #include <linux/jiffies.h> 34 #include <linux/errno.h> 35 #include <linux/slab.h> 36 #include <linux/tty.h> 37 #include <linux/tty_driver.h> 38 #include <linux/tty_flip.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/serial.h> 42 #include <linux/ioctl.h> 43 #include <linux/wait.h> 44 #include <linux/firmware.h> 45 #include <linux/ihex.h> 46 #include <linux/uaccess.h> 47 #include <linux/usb.h> 48 #include <linux/usb/serial.h> 49 #include "io_edgeport.h" 50 #include "io_ionsp.h" /* info for the iosp messages */ 51 #include "io_16654.h" /* 16654 UART defines */ 52 53 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 54 #define DRIVER_DESC "Edgeport USB Serial Driver" 55 56 #define MAX_NAME_LEN 64 57 58 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ 59 60 static const struct usb_device_id edgeport_2port_id_table[] = { 61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 62 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 63 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 64 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 65 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 66 { } 67 }; 68 69 static const struct usb_device_id edgeport_4port_id_table[] = { 70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 76 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 77 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 78 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 79 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 80 { } 81 }; 82 83 static const struct usb_device_id edgeport_8port_id_table[] = { 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 86 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 87 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 88 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 89 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 90 { } 91 }; 92 93 static const struct usb_device_id Epic_port_id_table[] = { 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 95 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 96 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 97 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 98 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 99 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 100 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 101 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 102 { } 103 }; 104 105 /* Devices that this driver supports */ 106 static const struct usb_device_id id_table_combined[] = { 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 124 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 125 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 126 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 127 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 129 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 130 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 131 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 132 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 133 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 134 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 135 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 136 { } /* Terminating entry */ 137 }; 138 139 MODULE_DEVICE_TABLE(usb, id_table_combined); 140 141 142 /* receive port state */ 143 enum RXSTATE { 144 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 145 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 146 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 147 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 148 }; 149 150 151 /* Transmit Fifo 152 * This Transmit queue is an extension of the edgeport Rx buffer. 153 * The maximum amount of data buffered in both the edgeport 154 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 155 */ 156 struct TxFifo { 157 unsigned int head; /* index to head pointer (write) */ 158 unsigned int tail; /* index to tail pointer (read) */ 159 unsigned int count; /* Bytes in queue */ 160 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 161 unsigned char *fifo; /* allocated Buffer */ 162 }; 163 164 /* This structure holds all of the local port information */ 165 struct edgeport_port { 166 __u16 txCredits; /* our current credits for this port */ 167 __u16 maxTxCredits; /* the max size of the port */ 168 169 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 170 struct urb *write_urb; /* write URB for this port */ 171 bool write_in_progress; /* 'true' while a write URB is outstanding */ 172 spinlock_t ep_lock; 173 174 __u8 shadowLCR; /* last LCR value received */ 175 __u8 shadowMCR; /* last MCR value received */ 176 __u8 shadowMSR; /* last MSR value received */ 177 __u8 shadowLSR; /* last LSR value received */ 178 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 179 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 180 __u8 validDataMask; 181 __u32 baudRate; 182 183 bool open; 184 bool openPending; 185 bool commandPending; 186 bool closePending; 187 bool chaseResponsePending; 188 189 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 190 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 191 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 192 193 struct usb_serial_port *port; /* loop back to the owner of this object */ 194 }; 195 196 197 /* This structure holds all of the individual device information */ 198 struct edgeport_serial { 199 char name[MAX_NAME_LEN+2]; /* string name of this device */ 200 201 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 202 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 203 struct edgeport_product_info product_info; /* Product Info */ 204 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 205 int is_epic; /* flag if EPiC device or not */ 206 207 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 208 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 209 struct urb *interrupt_read_urb; /* our interrupt urb */ 210 211 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 212 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 213 struct urb *read_urb; /* our bulk read urb */ 214 bool read_in_progress; 215 spinlock_t es_lock; 216 217 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 218 219 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 220 221 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 222 __u8 rxHeader1; /* receive header byte 1 */ 223 __u8 rxHeader2; /* receive header byte 2 */ 224 __u8 rxHeader3; /* receive header byte 3 */ 225 __u8 rxPort; /* the port that we are currently receiving data for */ 226 __u8 rxStatusCode; /* the receive status code */ 227 __u8 rxStatusParam; /* the receive status paramater */ 228 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 229 struct usb_serial *serial; /* loop back to the owner of this object */ 230 }; 231 232 /* baud rate information */ 233 struct divisor_table_entry { 234 __u32 BaudRate; 235 __u16 Divisor; 236 }; 237 238 /* 239 * Define table of divisors for Rev A EdgePort/4 hardware 240 * These assume a 3.6864MHz crystal, the standard /16, and 241 * MCR.7 = 0. 242 */ 243 244 static const struct divisor_table_entry divisor_table[] = { 245 { 50, 4608}, 246 { 75, 3072}, 247 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 248 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 249 { 150, 1536}, 250 { 300, 768}, 251 { 600, 384}, 252 { 1200, 192}, 253 { 1800, 128}, 254 { 2400, 96}, 255 { 4800, 48}, 256 { 7200, 32}, 257 { 9600, 24}, 258 { 14400, 16}, 259 { 19200, 12}, 260 { 38400, 6}, 261 { 57600, 4}, 262 { 115200, 2}, 263 { 230400, 1}, 264 }; 265 266 /* Number of outstanding Command Write Urbs */ 267 static atomic_t CmdUrbs = ATOMIC_INIT(0); 268 269 270 /* local function prototypes */ 271 272 /* function prototypes for all URB callbacks */ 273 static void edge_interrupt_callback(struct urb *urb); 274 static void edge_bulk_in_callback(struct urb *urb); 275 static void edge_bulk_out_data_callback(struct urb *urb); 276 static void edge_bulk_out_cmd_callback(struct urb *urb); 277 278 /* function prototypes for the usbserial callbacks */ 279 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); 280 static void edge_close(struct usb_serial_port *port); 281 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 282 const unsigned char *buf, int count); 283 static int edge_write_room(struct tty_struct *tty); 284 static int edge_chars_in_buffer(struct tty_struct *tty); 285 static void edge_throttle(struct tty_struct *tty); 286 static void edge_unthrottle(struct tty_struct *tty); 287 static void edge_set_termios(struct tty_struct *tty, 288 struct usb_serial_port *port, 289 struct ktermios *old_termios); 290 static int edge_ioctl(struct tty_struct *tty, 291 unsigned int cmd, unsigned long arg); 292 static void edge_break(struct tty_struct *tty, int break_state); 293 static int edge_tiocmget(struct tty_struct *tty); 294 static int edge_tiocmset(struct tty_struct *tty, 295 unsigned int set, unsigned int clear); 296 static int edge_startup(struct usb_serial *serial); 297 static void edge_disconnect(struct usb_serial *serial); 298 static void edge_release(struct usb_serial *serial); 299 static int edge_port_probe(struct usb_serial_port *port); 300 static int edge_port_remove(struct usb_serial_port *port); 301 302 /* function prototypes for all of our local functions */ 303 304 static void process_rcvd_data(struct edgeport_serial *edge_serial, 305 unsigned char *buffer, __u16 bufferLength); 306 static void process_rcvd_status(struct edgeport_serial *edge_serial, 307 __u8 byte2, __u8 byte3); 308 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 309 int length); 310 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 311 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 312 __u8 lsr, __u8 data); 313 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 314 __u8 param); 315 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 316 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 317 int baudRate); 318 static void change_port_settings(struct tty_struct *tty, 319 struct edgeport_port *edge_port, 320 struct ktermios *old_termios); 321 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 322 __u8 regNum, __u8 regValue); 323 static int write_cmd_usb(struct edgeport_port *edge_port, 324 unsigned char *buffer, int writeLength); 325 static void send_more_port_data(struct edgeport_serial *edge_serial, 326 struct edgeport_port *edge_port); 327 328 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 329 __u16 length, const __u8 *data); 330 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, 331 __u16 length, __u8 *data); 332 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 333 __u16 length, const __u8 *data); 334 static void get_manufacturing_desc(struct edgeport_serial *edge_serial); 335 static void get_boot_desc(struct edgeport_serial *edge_serial); 336 static void load_application_firmware(struct edgeport_serial *edge_serial); 337 338 static void unicode_to_ascii(char *string, int buflen, 339 __le16 *unicode, int unicode_size); 340 341 342 /* ************************************************************************ */ 343 /* ************************************************************************ */ 344 /* ************************************************************************ */ 345 /* ************************************************************************ */ 346 347 /************************************************************************ 348 * * 349 * update_edgeport_E2PROM() Compare current versions of * 350 * Boot ROM and Manufacture * 351 * Descriptors with versions * 352 * embedded in this driver * 353 * * 354 ************************************************************************/ 355 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 356 { 357 struct device *dev = &edge_serial->serial->dev->dev; 358 __u32 BootCurVer; 359 __u32 BootNewVer; 360 __u8 BootMajorVersion; 361 __u8 BootMinorVersion; 362 __u16 BootBuildNumber; 363 __u32 Bootaddr; 364 const struct ihex_binrec *rec; 365 const struct firmware *fw; 366 const char *fw_name; 367 int response; 368 369 switch (edge_serial->product_info.iDownloadFile) { 370 case EDGE_DOWNLOAD_FILE_I930: 371 fw_name = "edgeport/boot.fw"; 372 break; 373 case EDGE_DOWNLOAD_FILE_80251: 374 fw_name = "edgeport/boot2.fw"; 375 break; 376 default: 377 return; 378 } 379 380 response = request_ihex_firmware(&fw, fw_name, 381 &edge_serial->serial->dev->dev); 382 if (response) { 383 dev_err(dev, "Failed to load image \"%s\" err %d\n", 384 fw_name, response); 385 return; 386 } 387 388 rec = (const struct ihex_binrec *)fw->data; 389 BootMajorVersion = rec->data[0]; 390 BootMinorVersion = rec->data[1]; 391 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 392 393 /* Check Boot Image Version */ 394 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 395 (edge_serial->boot_descriptor.MinorVersion << 16) + 396 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 397 398 BootNewVer = (BootMajorVersion << 24) + 399 (BootMinorVersion << 16) + 400 BootBuildNumber; 401 402 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 403 edge_serial->boot_descriptor.MajorVersion, 404 edge_serial->boot_descriptor.MinorVersion, 405 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 406 407 408 if (BootNewVer > BootCurVer) { 409 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 410 edge_serial->boot_descriptor.MajorVersion, 411 edge_serial->boot_descriptor.MinorVersion, 412 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 413 BootMajorVersion, BootMinorVersion, BootBuildNumber); 414 415 dev_dbg(dev, "Downloading new Boot Image\n"); 416 417 for (rec = ihex_next_binrec(rec); rec; 418 rec = ihex_next_binrec(rec)) { 419 Bootaddr = be32_to_cpu(rec->addr); 420 response = rom_write(edge_serial->serial, 421 Bootaddr >> 16, 422 Bootaddr & 0xFFFF, 423 be16_to_cpu(rec->len), 424 &rec->data[0]); 425 if (response < 0) { 426 dev_err(&edge_serial->serial->dev->dev, 427 "rom_write failed (%x, %x, %d)\n", 428 Bootaddr >> 16, Bootaddr & 0xFFFF, 429 be16_to_cpu(rec->len)); 430 break; 431 } 432 } 433 } else { 434 dev_dbg(dev, "Boot Image -- already up to date\n"); 435 } 436 release_firmware(fw); 437 } 438 439 #if 0 440 /************************************************************************ 441 * 442 * Get string descriptor from device 443 * 444 ************************************************************************/ 445 static int get_string_desc(struct usb_device *dev, int Id, 446 struct usb_string_descriptor **pRetDesc) 447 { 448 struct usb_string_descriptor StringDesc; 449 struct usb_string_descriptor *pStringDesc; 450 451 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); 452 453 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, 454 sizeof(StringDesc))) 455 return 0; 456 457 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); 458 if (!pStringDesc) 459 return -1; 460 461 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, 462 StringDesc.bLength)) { 463 kfree(pStringDesc); 464 return -1; 465 } 466 467 *pRetDesc = pStringDesc; 468 return 0; 469 } 470 #endif 471 472 static void dump_product_info(struct edgeport_serial *edge_serial, 473 struct edgeport_product_info *product_info) 474 { 475 struct device *dev = &edge_serial->serial->dev->dev; 476 477 /* Dump Product Info structure */ 478 dev_dbg(dev, "**Product Information:\n"); 479 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 480 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 481 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 482 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 483 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 484 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 485 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 486 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 487 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 488 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 489 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 490 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 491 product_info->BootMajorVersion, 492 product_info->BootMinorVersion, 493 le16_to_cpu(product_info->BootBuildNumber)); 494 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 495 product_info->FirmwareMajorVersion, 496 product_info->FirmwareMinorVersion, 497 le16_to_cpu(product_info->FirmwareBuildNumber)); 498 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 499 product_info->ManufactureDescDate[0], 500 product_info->ManufactureDescDate[1], 501 product_info->ManufactureDescDate[2]+1900); 502 dev_dbg(dev, " iDownloadFile 0x%x\n", 503 product_info->iDownloadFile); 504 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 505 } 506 507 static void get_product_info(struct edgeport_serial *edge_serial) 508 { 509 struct edgeport_product_info *product_info = &edge_serial->product_info; 510 511 memset(product_info, 0, sizeof(struct edgeport_product_info)); 512 513 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 514 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 515 product_info->ProdInfoVer = 0; 516 517 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 518 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 519 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 520 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 521 522 product_info->BootMajorVersion = 523 edge_serial->boot_descriptor.MajorVersion; 524 product_info->BootMinorVersion = 525 edge_serial->boot_descriptor.MinorVersion; 526 product_info->BootBuildNumber = 527 edge_serial->boot_descriptor.BuildNumber; 528 529 memcpy(product_info->ManufactureDescDate, 530 edge_serial->manuf_descriptor.DescDate, 531 sizeof(edge_serial->manuf_descriptor.DescDate)); 532 533 /* check if this is 2nd generation hardware */ 534 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 535 & ION_DEVICE_ID_80251_NETCHIP) 536 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 537 else 538 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 539 540 /* Determine Product type and set appropriate flags */ 541 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 542 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 543 case ION_DEVICE_ID_EDGEPORT_4T: 544 case ION_DEVICE_ID_EDGEPORT_4: 545 case ION_DEVICE_ID_EDGEPORT_2: 546 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 547 case ION_DEVICE_ID_EDGEPORT_8: 548 case ION_DEVICE_ID_EDGEPORT_421: 549 case ION_DEVICE_ID_EDGEPORT_21: 550 case ION_DEVICE_ID_EDGEPORT_2_DIN: 551 case ION_DEVICE_ID_EDGEPORT_4_DIN: 552 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 553 product_info->IsRS232 = 1; 554 break; 555 556 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 557 product_info->IsRS422 = 1; 558 product_info->IsRS485 = 1; 559 break; 560 561 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 562 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 563 product_info->IsRS422 = 1; 564 break; 565 } 566 567 dump_product_info(edge_serial, product_info); 568 } 569 570 static int get_epic_descriptor(struct edgeport_serial *ep) 571 { 572 int result; 573 struct usb_serial *serial = ep->serial; 574 struct edgeport_product_info *product_info = &ep->product_info; 575 struct edge_compatibility_descriptor *epic; 576 struct edge_compatibility_bits *bits; 577 struct device *dev = &serial->dev->dev; 578 579 ep->is_epic = 0; 580 581 epic = kmalloc(sizeof(*epic), GFP_KERNEL); 582 if (!epic) 583 return -ENOMEM; 584 585 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 586 USB_REQUEST_ION_GET_EPIC_DESC, 587 0xC0, 0x00, 0x00, 588 epic, sizeof(*epic), 589 300); 590 if (result == sizeof(*epic)) { 591 ep->is_epic = 1; 592 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 593 memset(product_info, 0, sizeof(struct edgeport_product_info)); 594 595 product_info->NumPorts = epic->NumPorts; 596 product_info->ProdInfoVer = 0; 597 product_info->FirmwareMajorVersion = epic->MajorVersion; 598 product_info->FirmwareMinorVersion = epic->MinorVersion; 599 product_info->FirmwareBuildNumber = epic->BuildNumber; 600 product_info->iDownloadFile = epic->iDownloadFile; 601 product_info->EpicVer = epic->EpicVer; 602 product_info->Epic = epic->Supports; 603 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 604 dump_product_info(ep, product_info); 605 606 bits = &ep->epic_descriptor.Supports; 607 dev_dbg(dev, "**EPIC descriptor:\n"); 608 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 609 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 610 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 611 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 612 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 613 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 614 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 615 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 616 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 617 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 618 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 619 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 620 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 621 622 result = 0; 623 } else if (result >= 0) { 624 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 625 result); 626 result = -EIO; 627 } 628 629 kfree(epic); 630 631 return result; 632 } 633 634 635 /************************************************************************/ 636 /************************************************************************/ 637 /* U S B C A L L B A C K F U N C T I O N S */ 638 /* U S B C A L L B A C K F U N C T I O N S */ 639 /************************************************************************/ 640 /************************************************************************/ 641 642 /***************************************************************************** 643 * edge_interrupt_callback 644 * this is the callback function for when we have received data on the 645 * interrupt endpoint. 646 *****************************************************************************/ 647 static void edge_interrupt_callback(struct urb *urb) 648 { 649 struct edgeport_serial *edge_serial = urb->context; 650 struct device *dev; 651 struct edgeport_port *edge_port; 652 struct usb_serial_port *port; 653 unsigned char *data = urb->transfer_buffer; 654 int length = urb->actual_length; 655 int bytes_avail; 656 int position; 657 int txCredits; 658 int portNumber; 659 int result; 660 int status = urb->status; 661 662 switch (status) { 663 case 0: 664 /* success */ 665 break; 666 case -ECONNRESET: 667 case -ENOENT: 668 case -ESHUTDOWN: 669 /* this urb is terminated, clean up */ 670 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 671 return; 672 default: 673 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 674 goto exit; 675 } 676 677 dev = &edge_serial->serial->dev->dev; 678 679 /* process this interrupt-read even if there are no ports open */ 680 if (length) { 681 usb_serial_debug_data(dev, __func__, length, data); 682 683 if (length > 1) { 684 bytes_avail = data[0] | (data[1] << 8); 685 if (bytes_avail) { 686 spin_lock(&edge_serial->es_lock); 687 edge_serial->rxBytesAvail += bytes_avail; 688 dev_dbg(dev, 689 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 690 __func__, bytes_avail, 691 edge_serial->rxBytesAvail, 692 edge_serial->read_in_progress); 693 694 if (edge_serial->rxBytesAvail > 0 && 695 !edge_serial->read_in_progress) { 696 dev_dbg(dev, "%s - posting a read\n", __func__); 697 edge_serial->read_in_progress = true; 698 699 /* we have pending bytes on the 700 bulk in pipe, send a request */ 701 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 702 if (result) { 703 dev_err(dev, 704 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 705 __func__, result); 706 edge_serial->read_in_progress = false; 707 } 708 } 709 spin_unlock(&edge_serial->es_lock); 710 } 711 } 712 /* grab the txcredits for the ports if available */ 713 position = 2; 714 portNumber = 0; 715 while ((position < length) && 716 (portNumber < edge_serial->serial->num_ports)) { 717 txCredits = data[position] | (data[position+1] << 8); 718 if (txCredits) { 719 port = edge_serial->serial->port[portNumber]; 720 edge_port = usb_get_serial_port_data(port); 721 if (edge_port->open) { 722 spin_lock(&edge_port->ep_lock); 723 edge_port->txCredits += txCredits; 724 spin_unlock(&edge_port->ep_lock); 725 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 726 __func__, portNumber, 727 edge_port->txCredits); 728 729 /* tell the tty driver that something 730 has changed */ 731 tty_port_tty_wakeup(&edge_port->port->port); 732 /* Since we have more credit, check 733 if more data can be sent */ 734 send_more_port_data(edge_serial, 735 edge_port); 736 } 737 } 738 position += 2; 739 ++portNumber; 740 } 741 } 742 743 exit: 744 result = usb_submit_urb(urb, GFP_ATOMIC); 745 if (result) 746 dev_err(&urb->dev->dev, 747 "%s - Error %d submitting control urb\n", 748 __func__, result); 749 } 750 751 752 /***************************************************************************** 753 * edge_bulk_in_callback 754 * this is the callback function for when we have received data on the 755 * bulk in endpoint. 756 *****************************************************************************/ 757 static void edge_bulk_in_callback(struct urb *urb) 758 { 759 struct edgeport_serial *edge_serial = urb->context; 760 struct device *dev; 761 unsigned char *data = urb->transfer_buffer; 762 int retval; 763 __u16 raw_data_length; 764 int status = urb->status; 765 766 if (status) { 767 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 768 __func__, status); 769 edge_serial->read_in_progress = false; 770 return; 771 } 772 773 if (urb->actual_length == 0) { 774 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 775 edge_serial->read_in_progress = false; 776 return; 777 } 778 779 dev = &edge_serial->serial->dev->dev; 780 raw_data_length = urb->actual_length; 781 782 usb_serial_debug_data(dev, __func__, raw_data_length, data); 783 784 spin_lock(&edge_serial->es_lock); 785 786 /* decrement our rxBytes available by the number that we just got */ 787 edge_serial->rxBytesAvail -= raw_data_length; 788 789 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 790 raw_data_length, edge_serial->rxBytesAvail); 791 792 process_rcvd_data(edge_serial, data, urb->actual_length); 793 794 /* check to see if there's any more data for us to read */ 795 if (edge_serial->rxBytesAvail > 0) { 796 dev_dbg(dev, "%s - posting a read\n", __func__); 797 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 798 if (retval) { 799 dev_err(dev, 800 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 801 __func__, retval); 802 edge_serial->read_in_progress = false; 803 } 804 } else { 805 edge_serial->read_in_progress = false; 806 } 807 808 spin_unlock(&edge_serial->es_lock); 809 } 810 811 812 /***************************************************************************** 813 * edge_bulk_out_data_callback 814 * this is the callback function for when we have finished sending 815 * serial data on the bulk out endpoint. 816 *****************************************************************************/ 817 static void edge_bulk_out_data_callback(struct urb *urb) 818 { 819 struct edgeport_port *edge_port = urb->context; 820 int status = urb->status; 821 822 if (status) { 823 dev_dbg(&urb->dev->dev, 824 "%s - nonzero write bulk status received: %d\n", 825 __func__, status); 826 } 827 828 if (edge_port->open) 829 tty_port_tty_wakeup(&edge_port->port->port); 830 831 /* Release the Write URB */ 832 edge_port->write_in_progress = false; 833 834 /* Check if more data needs to be sent */ 835 send_more_port_data((struct edgeport_serial *) 836 (usb_get_serial_data(edge_port->port->serial)), edge_port); 837 } 838 839 840 /***************************************************************************** 841 * BulkOutCmdCallback 842 * this is the callback function for when we have finished sending a 843 * command on the bulk out endpoint. 844 *****************************************************************************/ 845 static void edge_bulk_out_cmd_callback(struct urb *urb) 846 { 847 struct edgeport_port *edge_port = urb->context; 848 int status = urb->status; 849 850 atomic_dec(&CmdUrbs); 851 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", 852 __func__, urb, atomic_read(&CmdUrbs)); 853 854 855 /* clean up the transfer buffer */ 856 kfree(urb->transfer_buffer); 857 858 /* Free the command urb */ 859 usb_free_urb(urb); 860 861 if (status) { 862 dev_dbg(&urb->dev->dev, 863 "%s - nonzero write bulk status received: %d\n", 864 __func__, status); 865 return; 866 } 867 868 /* tell the tty driver that something has changed */ 869 if (edge_port->open) 870 tty_port_tty_wakeup(&edge_port->port->port); 871 872 /* we have completed the command */ 873 edge_port->commandPending = false; 874 wake_up(&edge_port->wait_command); 875 } 876 877 878 /***************************************************************************** 879 * Driver tty interface functions 880 *****************************************************************************/ 881 882 /***************************************************************************** 883 * SerialOpen 884 * this function is called by the tty driver when a port is opened 885 * If successful, we return 0 886 * Otherwise we return a negative error number. 887 *****************************************************************************/ 888 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 889 { 890 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 891 struct device *dev = &port->dev; 892 struct usb_serial *serial; 893 struct edgeport_serial *edge_serial; 894 int response; 895 896 if (edge_port == NULL) 897 return -ENODEV; 898 899 /* see if we've set up our endpoint info yet (can't set it up 900 in edge_startup as the structures were not set up at that time.) */ 901 serial = port->serial; 902 edge_serial = usb_get_serial_data(serial); 903 if (edge_serial == NULL) 904 return -ENODEV; 905 if (edge_serial->interrupt_in_buffer == NULL) { 906 struct usb_serial_port *port0 = serial->port[0]; 907 908 /* not set up yet, so do it now */ 909 edge_serial->interrupt_in_buffer = 910 port0->interrupt_in_buffer; 911 edge_serial->interrupt_in_endpoint = 912 port0->interrupt_in_endpointAddress; 913 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 914 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 915 edge_serial->bulk_in_endpoint = 916 port0->bulk_in_endpointAddress; 917 edge_serial->read_urb = port0->read_urb; 918 edge_serial->bulk_out_endpoint = 919 port0->bulk_out_endpointAddress; 920 921 /* set up our interrupt urb */ 922 usb_fill_int_urb(edge_serial->interrupt_read_urb, 923 serial->dev, 924 usb_rcvintpipe(serial->dev, 925 port0->interrupt_in_endpointAddress), 926 port0->interrupt_in_buffer, 927 edge_serial->interrupt_read_urb->transfer_buffer_length, 928 edge_interrupt_callback, edge_serial, 929 edge_serial->interrupt_read_urb->interval); 930 931 /* set up our bulk in urb */ 932 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 933 usb_rcvbulkpipe(serial->dev, 934 port0->bulk_in_endpointAddress), 935 port0->bulk_in_buffer, 936 edge_serial->read_urb->transfer_buffer_length, 937 edge_bulk_in_callback, edge_serial); 938 edge_serial->read_in_progress = false; 939 940 /* start interrupt read for this edgeport 941 * this interrupt will continue as long 942 * as the edgeport is connected */ 943 response = usb_submit_urb(edge_serial->interrupt_read_urb, 944 GFP_KERNEL); 945 if (response) { 946 dev_err(dev, "%s - Error %d submitting control urb\n", 947 __func__, response); 948 } 949 } 950 951 /* initialize our wait queues */ 952 init_waitqueue_head(&edge_port->wait_open); 953 init_waitqueue_head(&edge_port->wait_chase); 954 init_waitqueue_head(&edge_port->wait_command); 955 956 /* initialize our port settings */ 957 edge_port->txCredits = 0; /* Can't send any data yet */ 958 /* Must always set this bit to enable ints! */ 959 edge_port->shadowMCR = MCR_MASTER_IE; 960 edge_port->chaseResponsePending = false; 961 962 /* send a open port command */ 963 edge_port->openPending = true; 964 edge_port->open = false; 965 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 966 967 if (response < 0) { 968 dev_err(dev, "%s - error sending open port command\n", __func__); 969 edge_port->openPending = false; 970 return -ENODEV; 971 } 972 973 /* now wait for the port to be completely opened */ 974 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 975 OPEN_TIMEOUT); 976 977 if (!edge_port->open) { 978 /* open timed out */ 979 dev_dbg(dev, "%s - open timedout\n", __func__); 980 edge_port->openPending = false; 981 return -ENODEV; 982 } 983 984 /* create the txfifo */ 985 edge_port->txfifo.head = 0; 986 edge_port->txfifo.tail = 0; 987 edge_port->txfifo.count = 0; 988 edge_port->txfifo.size = edge_port->maxTxCredits; 989 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 990 991 if (!edge_port->txfifo.fifo) { 992 edge_close(port); 993 return -ENOMEM; 994 } 995 996 /* Allocate a URB for the write */ 997 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 998 edge_port->write_in_progress = false; 999 1000 if (!edge_port->write_urb) { 1001 edge_close(port); 1002 return -ENOMEM; 1003 } 1004 1005 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 1006 __func__, edge_port->maxTxCredits); 1007 1008 return 0; 1009 } 1010 1011 1012 /************************************************************************ 1013 * 1014 * block_until_chase_response 1015 * 1016 * This function will block the close until one of the following: 1017 * 1. Response to our Chase comes from Edgeport 1018 * 2. A timeout of 10 seconds without activity has expired 1019 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 1020 * 1021 ************************************************************************/ 1022 static void block_until_chase_response(struct edgeport_port *edge_port) 1023 { 1024 struct device *dev = &edge_port->port->dev; 1025 DEFINE_WAIT(wait); 1026 __u16 lastCredits; 1027 int timeout = 1*HZ; 1028 int loop = 10; 1029 1030 while (1) { 1031 /* Save Last credits */ 1032 lastCredits = edge_port->txCredits; 1033 1034 /* Did we get our Chase response */ 1035 if (!edge_port->chaseResponsePending) { 1036 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 1037 1038 /* did we get all of our credit back? */ 1039 if (edge_port->txCredits == edge_port->maxTxCredits) { 1040 dev_dbg(dev, "%s - Got all credits\n", __func__); 1041 return; 1042 } 1043 } 1044 1045 /* Block the thread for a while */ 1046 prepare_to_wait(&edge_port->wait_chase, &wait, 1047 TASK_UNINTERRUPTIBLE); 1048 schedule_timeout(timeout); 1049 finish_wait(&edge_port->wait_chase, &wait); 1050 1051 if (lastCredits == edge_port->txCredits) { 1052 /* No activity.. count down. */ 1053 loop--; 1054 if (loop == 0) { 1055 edge_port->chaseResponsePending = false; 1056 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 1057 return; 1058 } 1059 } else { 1060 /* Reset timeout value back to 10 seconds */ 1061 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 1062 lastCredits, edge_port->txCredits); 1063 loop = 10; 1064 } 1065 } 1066 } 1067 1068 1069 /************************************************************************ 1070 * 1071 * block_until_tx_empty 1072 * 1073 * This function will block the close until one of the following: 1074 * 1. TX count are 0 1075 * 2. The edgeport has stopped 1076 * 3. A timeout of 3 seconds without activity has expired 1077 * 1078 ************************************************************************/ 1079 static void block_until_tx_empty(struct edgeport_port *edge_port) 1080 { 1081 struct device *dev = &edge_port->port->dev; 1082 DEFINE_WAIT(wait); 1083 struct TxFifo *fifo = &edge_port->txfifo; 1084 __u32 lastCount; 1085 int timeout = HZ/10; 1086 int loop = 30; 1087 1088 while (1) { 1089 /* Save Last count */ 1090 lastCount = fifo->count; 1091 1092 /* Is the Edgeport Buffer empty? */ 1093 if (lastCount == 0) { 1094 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1095 return; 1096 } 1097 1098 /* Block the thread for a while */ 1099 prepare_to_wait(&edge_port->wait_chase, &wait, 1100 TASK_UNINTERRUPTIBLE); 1101 schedule_timeout(timeout); 1102 finish_wait(&edge_port->wait_chase, &wait); 1103 1104 dev_dbg(dev, "%s wait\n", __func__); 1105 1106 if (lastCount == fifo->count) { 1107 /* No activity.. count down. */ 1108 loop--; 1109 if (loop == 0) { 1110 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1111 return; 1112 } 1113 } else { 1114 /* Reset timeout value back to seconds */ 1115 loop = 30; 1116 } 1117 } 1118 } 1119 1120 1121 /***************************************************************************** 1122 * edge_close 1123 * this function is called by the tty driver when a port is closed 1124 *****************************************************************************/ 1125 static void edge_close(struct usb_serial_port *port) 1126 { 1127 struct edgeport_serial *edge_serial; 1128 struct edgeport_port *edge_port; 1129 int status; 1130 1131 edge_serial = usb_get_serial_data(port->serial); 1132 edge_port = usb_get_serial_port_data(port); 1133 if (edge_serial == NULL || edge_port == NULL) 1134 return; 1135 1136 /* block until tx is empty */ 1137 block_until_tx_empty(edge_port); 1138 1139 edge_port->closePending = true; 1140 1141 if (!edge_serial->is_epic || 1142 edge_serial->epic_descriptor.Supports.IOSPChase) { 1143 /* flush and chase */ 1144 edge_port->chaseResponsePending = true; 1145 1146 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1147 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1148 if (status == 0) 1149 /* block until chase finished */ 1150 block_until_chase_response(edge_port); 1151 else 1152 edge_port->chaseResponsePending = false; 1153 } 1154 1155 if (!edge_serial->is_epic || 1156 edge_serial->epic_descriptor.Supports.IOSPClose) { 1157 /* close the port */ 1158 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1159 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1160 } 1161 1162 /* port->close = true; */ 1163 edge_port->closePending = false; 1164 edge_port->open = false; 1165 edge_port->openPending = false; 1166 1167 usb_kill_urb(edge_port->write_urb); 1168 1169 if (edge_port->write_urb) { 1170 /* if this urb had a transfer buffer already 1171 (old transfer) free it */ 1172 kfree(edge_port->write_urb->transfer_buffer); 1173 usb_free_urb(edge_port->write_urb); 1174 edge_port->write_urb = NULL; 1175 } 1176 kfree(edge_port->txfifo.fifo); 1177 edge_port->txfifo.fifo = NULL; 1178 } 1179 1180 /***************************************************************************** 1181 * SerialWrite 1182 * this function is called by the tty driver when data should be written 1183 * to the port. 1184 * If successful, we return the number of bytes written, otherwise we 1185 * return a negative error number. 1186 *****************************************************************************/ 1187 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1188 const unsigned char *data, int count) 1189 { 1190 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1191 struct TxFifo *fifo; 1192 int copySize; 1193 int bytesleft; 1194 int firsthalf; 1195 int secondhalf; 1196 unsigned long flags; 1197 1198 if (edge_port == NULL) 1199 return -ENODEV; 1200 1201 /* get a pointer to the Tx fifo */ 1202 fifo = &edge_port->txfifo; 1203 1204 spin_lock_irqsave(&edge_port->ep_lock, flags); 1205 1206 /* calculate number of bytes to put in fifo */ 1207 copySize = min((unsigned int)count, 1208 (edge_port->txCredits - fifo->count)); 1209 1210 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1211 __func__, count, edge_port->txCredits - fifo->count, copySize); 1212 1213 /* catch writes of 0 bytes which the tty driver likes to give us, 1214 and when txCredits is empty */ 1215 if (copySize == 0) { 1216 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1217 goto finish_write; 1218 } 1219 1220 /* queue the data 1221 * since we can never overflow the buffer we do not have to check for a 1222 * full condition 1223 * 1224 * the copy is done is two parts -- first fill to the end of the buffer 1225 * then copy the reset from the start of the buffer 1226 */ 1227 bytesleft = fifo->size - fifo->head; 1228 firsthalf = min(bytesleft, copySize); 1229 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1230 firsthalf, bytesleft); 1231 1232 /* now copy our data */ 1233 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1234 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1235 1236 /* update the index and size */ 1237 fifo->head += firsthalf; 1238 fifo->count += firsthalf; 1239 1240 /* wrap the index */ 1241 if (fifo->head == fifo->size) 1242 fifo->head = 0; 1243 1244 secondhalf = copySize-firsthalf; 1245 1246 if (secondhalf) { 1247 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1248 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1249 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1250 /* update the index and size */ 1251 fifo->count += secondhalf; 1252 fifo->head += secondhalf; 1253 /* No need to check for wrap since we can not get to end of 1254 * the fifo in this part 1255 */ 1256 } 1257 1258 finish_write: 1259 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1260 1261 send_more_port_data((struct edgeport_serial *) 1262 usb_get_serial_data(port->serial), edge_port); 1263 1264 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1265 __func__, copySize, edge_port->txCredits, fifo->count); 1266 1267 return copySize; 1268 } 1269 1270 1271 /************************************************************************ 1272 * 1273 * send_more_port_data() 1274 * 1275 * This routine attempts to write additional UART transmit data 1276 * to a port over the USB bulk pipe. It is called (1) when new 1277 * data has been written to a port's TxBuffer from higher layers 1278 * (2) when the peripheral sends us additional TxCredits indicating 1279 * that it can accept more Tx data for a given port; and (3) when 1280 * a bulk write completes successfully and we want to see if we 1281 * can transmit more. 1282 * 1283 ************************************************************************/ 1284 static void send_more_port_data(struct edgeport_serial *edge_serial, 1285 struct edgeport_port *edge_port) 1286 { 1287 struct TxFifo *fifo = &edge_port->txfifo; 1288 struct device *dev = &edge_port->port->dev; 1289 struct urb *urb; 1290 unsigned char *buffer; 1291 int status; 1292 int count; 1293 int bytesleft; 1294 int firsthalf; 1295 int secondhalf; 1296 unsigned long flags; 1297 1298 spin_lock_irqsave(&edge_port->ep_lock, flags); 1299 1300 if (edge_port->write_in_progress || 1301 !edge_port->open || 1302 (fifo->count == 0)) { 1303 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1304 __func__, fifo->count, edge_port->write_in_progress); 1305 goto exit_send; 1306 } 1307 1308 /* since the amount of data in the fifo will always fit into the 1309 * edgeport buffer we do not need to check the write length 1310 * 1311 * Do we have enough credits for this port to make it worthwhile 1312 * to bother queueing a write. If it's too small, say a few bytes, 1313 * it's better to wait for more credits so we can do a larger write. 1314 */ 1315 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1316 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1317 __func__, fifo->count, edge_port->txCredits); 1318 goto exit_send; 1319 } 1320 1321 /* lock this write */ 1322 edge_port->write_in_progress = true; 1323 1324 /* get a pointer to the write_urb */ 1325 urb = edge_port->write_urb; 1326 1327 /* make sure transfer buffer is freed */ 1328 kfree(urb->transfer_buffer); 1329 urb->transfer_buffer = NULL; 1330 1331 /* build the data header for the buffer and port that we are about 1332 to send out */ 1333 count = fifo->count; 1334 buffer = kmalloc(count+2, GFP_ATOMIC); 1335 if (!buffer) { 1336 edge_port->write_in_progress = false; 1337 goto exit_send; 1338 } 1339 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1340 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1341 1342 /* now copy our data */ 1343 bytesleft = fifo->size - fifo->tail; 1344 firsthalf = min(bytesleft, count); 1345 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1346 fifo->tail += firsthalf; 1347 fifo->count -= firsthalf; 1348 if (fifo->tail == fifo->size) 1349 fifo->tail = 0; 1350 1351 secondhalf = count-firsthalf; 1352 if (secondhalf) { 1353 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1354 secondhalf); 1355 fifo->tail += secondhalf; 1356 fifo->count -= secondhalf; 1357 } 1358 1359 if (count) 1360 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1361 1362 /* fill up the urb with all of our data and submit it */ 1363 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1364 usb_sndbulkpipe(edge_serial->serial->dev, 1365 edge_serial->bulk_out_endpoint), 1366 buffer, count+2, 1367 edge_bulk_out_data_callback, edge_port); 1368 1369 /* decrement the number of credits we have by the number we just sent */ 1370 edge_port->txCredits -= count; 1371 edge_port->port->icount.tx += count; 1372 1373 status = usb_submit_urb(urb, GFP_ATOMIC); 1374 if (status) { 1375 /* something went wrong */ 1376 dev_err_console(edge_port->port, 1377 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1378 __func__, status); 1379 edge_port->write_in_progress = false; 1380 1381 /* revert the credits as something bad happened. */ 1382 edge_port->txCredits += count; 1383 edge_port->port->icount.tx -= count; 1384 } 1385 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1386 __func__, count, edge_port->txCredits, fifo->count); 1387 1388 exit_send: 1389 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1390 } 1391 1392 1393 /***************************************************************************** 1394 * edge_write_room 1395 * this function is called by the tty driver when it wants to know how 1396 * many bytes of data we can accept for a specific port. If successful, 1397 * we return the amount of room that we have for this port (the txCredits) 1398 * otherwise we return a negative error number. 1399 *****************************************************************************/ 1400 static int edge_write_room(struct tty_struct *tty) 1401 { 1402 struct usb_serial_port *port = tty->driver_data; 1403 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1404 int room; 1405 unsigned long flags; 1406 1407 if (edge_port == NULL) 1408 return 0; 1409 if (edge_port->closePending) 1410 return 0; 1411 1412 if (!edge_port->open) { 1413 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1414 return 0; 1415 } 1416 1417 /* total of both buffers is still txCredit */ 1418 spin_lock_irqsave(&edge_port->ep_lock, flags); 1419 room = edge_port->txCredits - edge_port->txfifo.count; 1420 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1421 1422 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 1423 return room; 1424 } 1425 1426 1427 /***************************************************************************** 1428 * edge_chars_in_buffer 1429 * this function is called by the tty driver when it wants to know how 1430 * many bytes of data we currently have outstanding in the port (data that 1431 * has been written, but hasn't made it out the port yet) 1432 * If successful, we return the number of bytes left to be written in the 1433 * system, 1434 * Otherwise we return a negative error number. 1435 *****************************************************************************/ 1436 static int edge_chars_in_buffer(struct tty_struct *tty) 1437 { 1438 struct usb_serial_port *port = tty->driver_data; 1439 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1440 int num_chars; 1441 unsigned long flags; 1442 1443 if (edge_port == NULL) 1444 return 0; 1445 if (edge_port->closePending) 1446 return 0; 1447 1448 if (!edge_port->open) { 1449 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1450 return 0; 1451 } 1452 1453 spin_lock_irqsave(&edge_port->ep_lock, flags); 1454 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1455 edge_port->txfifo.count; 1456 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1457 if (num_chars) { 1458 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); 1459 } 1460 1461 return num_chars; 1462 } 1463 1464 1465 /***************************************************************************** 1466 * SerialThrottle 1467 * this function is called by the tty driver when it wants to stop the data 1468 * being read from the port. 1469 *****************************************************************************/ 1470 static void edge_throttle(struct tty_struct *tty) 1471 { 1472 struct usb_serial_port *port = tty->driver_data; 1473 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1474 int status; 1475 1476 if (edge_port == NULL) 1477 return; 1478 1479 if (!edge_port->open) { 1480 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1481 return; 1482 } 1483 1484 /* if we are implementing XON/XOFF, send the stop character */ 1485 if (I_IXOFF(tty)) { 1486 unsigned char stop_char = STOP_CHAR(tty); 1487 status = edge_write(tty, port, &stop_char, 1); 1488 if (status <= 0) 1489 return; 1490 } 1491 1492 /* if we are implementing RTS/CTS, toggle that line */ 1493 if (C_CRTSCTS(tty)) { 1494 edge_port->shadowMCR &= ~MCR_RTS; 1495 status = send_cmd_write_uart_register(edge_port, MCR, 1496 edge_port->shadowMCR); 1497 if (status != 0) 1498 return; 1499 } 1500 } 1501 1502 1503 /***************************************************************************** 1504 * edge_unthrottle 1505 * this function is called by the tty driver when it wants to resume the 1506 * data being read from the port (called after SerialThrottle is called) 1507 *****************************************************************************/ 1508 static void edge_unthrottle(struct tty_struct *tty) 1509 { 1510 struct usb_serial_port *port = tty->driver_data; 1511 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1512 int status; 1513 1514 if (edge_port == NULL) 1515 return; 1516 1517 if (!edge_port->open) { 1518 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1519 return; 1520 } 1521 1522 /* if we are implementing XON/XOFF, send the start character */ 1523 if (I_IXOFF(tty)) { 1524 unsigned char start_char = START_CHAR(tty); 1525 status = edge_write(tty, port, &start_char, 1); 1526 if (status <= 0) 1527 return; 1528 } 1529 /* if we are implementing RTS/CTS, toggle that line */ 1530 if (C_CRTSCTS(tty)) { 1531 edge_port->shadowMCR |= MCR_RTS; 1532 send_cmd_write_uart_register(edge_port, MCR, 1533 edge_port->shadowMCR); 1534 } 1535 } 1536 1537 1538 /***************************************************************************** 1539 * SerialSetTermios 1540 * this function is called by the tty driver when it wants to change 1541 * the termios structure 1542 *****************************************************************************/ 1543 static void edge_set_termios(struct tty_struct *tty, 1544 struct usb_serial_port *port, struct ktermios *old_termios) 1545 { 1546 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1547 1548 if (edge_port == NULL) 1549 return; 1550 1551 if (!edge_port->open) { 1552 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1553 return; 1554 } 1555 1556 /* change the port settings to the new ones specified */ 1557 change_port_settings(tty, edge_port, old_termios); 1558 } 1559 1560 1561 /***************************************************************************** 1562 * get_lsr_info - get line status register info 1563 * 1564 * Purpose: Let user call ioctl() to get info when the UART physically 1565 * is emptied. On bus types like RS485, the transmitter must 1566 * release the bus after transmitting. This must be done when 1567 * the transmit shift register is empty, not be done when the 1568 * transmit holding register is empty. This functionality 1569 * allows an RS485 driver to be written in user space. 1570 *****************************************************************************/ 1571 static int get_lsr_info(struct edgeport_port *edge_port, 1572 unsigned int __user *value) 1573 { 1574 unsigned int result = 0; 1575 unsigned long flags; 1576 1577 spin_lock_irqsave(&edge_port->ep_lock, flags); 1578 if (edge_port->maxTxCredits == edge_port->txCredits && 1579 edge_port->txfifo.count == 0) { 1580 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1581 result = TIOCSER_TEMT; 1582 } 1583 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1584 1585 if (copy_to_user(value, &result, sizeof(int))) 1586 return -EFAULT; 1587 return 0; 1588 } 1589 1590 static int edge_tiocmset(struct tty_struct *tty, 1591 unsigned int set, unsigned int clear) 1592 { 1593 struct usb_serial_port *port = tty->driver_data; 1594 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1595 unsigned int mcr; 1596 1597 mcr = edge_port->shadowMCR; 1598 if (set & TIOCM_RTS) 1599 mcr |= MCR_RTS; 1600 if (set & TIOCM_DTR) 1601 mcr |= MCR_DTR; 1602 if (set & TIOCM_LOOP) 1603 mcr |= MCR_LOOPBACK; 1604 1605 if (clear & TIOCM_RTS) 1606 mcr &= ~MCR_RTS; 1607 if (clear & TIOCM_DTR) 1608 mcr &= ~MCR_DTR; 1609 if (clear & TIOCM_LOOP) 1610 mcr &= ~MCR_LOOPBACK; 1611 1612 edge_port->shadowMCR = mcr; 1613 1614 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1615 1616 return 0; 1617 } 1618 1619 static int edge_tiocmget(struct tty_struct *tty) 1620 { 1621 struct usb_serial_port *port = tty->driver_data; 1622 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1623 unsigned int result = 0; 1624 unsigned int msr; 1625 unsigned int mcr; 1626 1627 msr = edge_port->shadowMSR; 1628 mcr = edge_port->shadowMCR; 1629 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1630 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1631 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1632 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1633 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1634 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1635 1636 return result; 1637 } 1638 1639 static int get_serial_info(struct edgeport_port *edge_port, 1640 struct serial_struct __user *retinfo) 1641 { 1642 struct serial_struct tmp; 1643 1644 memset(&tmp, 0, sizeof(tmp)); 1645 1646 tmp.type = PORT_16550A; 1647 tmp.line = edge_port->port->minor; 1648 tmp.port = edge_port->port->port_number; 1649 tmp.irq = 0; 1650 tmp.xmit_fifo_size = edge_port->maxTxCredits; 1651 tmp.baud_base = 9600; 1652 tmp.close_delay = 5*HZ; 1653 tmp.closing_wait = 30*HZ; 1654 1655 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 1656 return -EFAULT; 1657 return 0; 1658 } 1659 1660 1661 /***************************************************************************** 1662 * SerialIoctl 1663 * this function handles any ioctl calls to the driver 1664 *****************************************************************************/ 1665 static int edge_ioctl(struct tty_struct *tty, 1666 unsigned int cmd, unsigned long arg) 1667 { 1668 struct usb_serial_port *port = tty->driver_data; 1669 DEFINE_WAIT(wait); 1670 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1671 1672 switch (cmd) { 1673 case TIOCSERGETLSR: 1674 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1675 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1676 1677 case TIOCGSERIAL: 1678 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); 1679 return get_serial_info(edge_port, (struct serial_struct __user *) arg); 1680 } 1681 return -ENOIOCTLCMD; 1682 } 1683 1684 1685 /***************************************************************************** 1686 * SerialBreak 1687 * this function sends a break to the port 1688 *****************************************************************************/ 1689 static void edge_break(struct tty_struct *tty, int break_state) 1690 { 1691 struct usb_serial_port *port = tty->driver_data; 1692 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1693 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1694 int status; 1695 1696 if (!edge_serial->is_epic || 1697 edge_serial->epic_descriptor.Supports.IOSPChase) { 1698 /* flush and chase */ 1699 edge_port->chaseResponsePending = true; 1700 1701 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1702 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1703 if (status == 0) { 1704 /* block until chase finished */ 1705 block_until_chase_response(edge_port); 1706 } else { 1707 edge_port->chaseResponsePending = false; 1708 } 1709 } 1710 1711 if (!edge_serial->is_epic || 1712 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1713 if (break_state == -1) { 1714 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1715 status = send_iosp_ext_cmd(edge_port, 1716 IOSP_CMD_SET_BREAK, 0); 1717 } else { 1718 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1719 status = send_iosp_ext_cmd(edge_port, 1720 IOSP_CMD_CLEAR_BREAK, 0); 1721 } 1722 if (status) 1723 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1724 __func__); 1725 } 1726 } 1727 1728 1729 /***************************************************************************** 1730 * process_rcvd_data 1731 * this function handles the data received on the bulk in pipe. 1732 *****************************************************************************/ 1733 static void process_rcvd_data(struct edgeport_serial *edge_serial, 1734 unsigned char *buffer, __u16 bufferLength) 1735 { 1736 struct device *dev = &edge_serial->serial->dev->dev; 1737 struct usb_serial_port *port; 1738 struct edgeport_port *edge_port; 1739 __u16 lastBufferLength; 1740 __u16 rxLen; 1741 1742 lastBufferLength = bufferLength + 1; 1743 1744 while (bufferLength > 0) { 1745 /* failsafe incase we get a message that we don't understand */ 1746 if (lastBufferLength == bufferLength) { 1747 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1748 break; 1749 } 1750 lastBufferLength = bufferLength; 1751 1752 switch (edge_serial->rxState) { 1753 case EXPECT_HDR1: 1754 edge_serial->rxHeader1 = *buffer; 1755 ++buffer; 1756 --bufferLength; 1757 1758 if (bufferLength == 0) { 1759 edge_serial->rxState = EXPECT_HDR2; 1760 break; 1761 } 1762 /* otherwise, drop on through */ 1763 case EXPECT_HDR2: 1764 edge_serial->rxHeader2 = *buffer; 1765 ++buffer; 1766 --bufferLength; 1767 1768 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1769 edge_serial->rxHeader1, edge_serial->rxHeader2); 1770 /* Process depending on whether this header is 1771 * data or status */ 1772 1773 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1774 /* Decode this status header and go to 1775 * EXPECT_HDR1 (if we can process the status 1776 * with only 2 bytes), or go to EXPECT_HDR3 to 1777 * get the third byte. */ 1778 edge_serial->rxPort = 1779 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1780 edge_serial->rxStatusCode = 1781 IOSP_GET_STATUS_CODE( 1782 edge_serial->rxHeader1); 1783 1784 if (!IOSP_STATUS_IS_2BYTE( 1785 edge_serial->rxStatusCode)) { 1786 /* This status needs additional bytes. 1787 * Save what we have and then wait for 1788 * more data. 1789 */ 1790 edge_serial->rxStatusParam 1791 = edge_serial->rxHeader2; 1792 edge_serial->rxState = EXPECT_HDR3; 1793 break; 1794 } 1795 /* We have all the header bytes, process the 1796 status now */ 1797 process_rcvd_status(edge_serial, 1798 edge_serial->rxHeader2, 0); 1799 edge_serial->rxState = EXPECT_HDR1; 1800 break; 1801 } else { 1802 edge_serial->rxPort = 1803 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1804 edge_serial->rxBytesRemaining = 1805 IOSP_GET_HDR_DATA_LEN( 1806 edge_serial->rxHeader1, 1807 edge_serial->rxHeader2); 1808 dev_dbg(dev, "%s - Data for Port %u Len %u\n", 1809 __func__, 1810 edge_serial->rxPort, 1811 edge_serial->rxBytesRemaining); 1812 1813 /* ASSERT(DevExt->RxPort < DevExt->NumPorts); 1814 * ASSERT(DevExt->RxBytesRemaining < 1815 * IOSP_MAX_DATA_LENGTH); 1816 */ 1817 1818 if (bufferLength == 0) { 1819 edge_serial->rxState = EXPECT_DATA; 1820 break; 1821 } 1822 /* Else, drop through */ 1823 } 1824 case EXPECT_DATA: /* Expect data */ 1825 if (bufferLength < edge_serial->rxBytesRemaining) { 1826 rxLen = bufferLength; 1827 /* Expect data to start next buffer */ 1828 edge_serial->rxState = EXPECT_DATA; 1829 } else { 1830 /* BufLen >= RxBytesRemaining */ 1831 rxLen = edge_serial->rxBytesRemaining; 1832 /* Start another header next time */ 1833 edge_serial->rxState = EXPECT_HDR1; 1834 } 1835 1836 bufferLength -= rxLen; 1837 edge_serial->rxBytesRemaining -= rxLen; 1838 1839 /* spit this data back into the tty driver if this 1840 port is open */ 1841 if (rxLen) { 1842 port = edge_serial->serial->port[ 1843 edge_serial->rxPort]; 1844 edge_port = usb_get_serial_port_data(port); 1845 if (edge_port->open) { 1846 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1847 __func__, rxLen, 1848 edge_serial->rxPort); 1849 edge_tty_recv(edge_port->port, buffer, 1850 rxLen); 1851 edge_port->port->icount.rx += rxLen; 1852 } 1853 buffer += rxLen; 1854 } 1855 break; 1856 1857 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1858 edge_serial->rxHeader3 = *buffer; 1859 ++buffer; 1860 --bufferLength; 1861 1862 /* We have all the header bytes, process the 1863 status now */ 1864 process_rcvd_status(edge_serial, 1865 edge_serial->rxStatusParam, 1866 edge_serial->rxHeader3); 1867 edge_serial->rxState = EXPECT_HDR1; 1868 break; 1869 } 1870 } 1871 } 1872 1873 1874 /***************************************************************************** 1875 * process_rcvd_status 1876 * this function handles the any status messages received on the 1877 * bulk in pipe. 1878 *****************************************************************************/ 1879 static void process_rcvd_status(struct edgeport_serial *edge_serial, 1880 __u8 byte2, __u8 byte3) 1881 { 1882 struct usb_serial_port *port; 1883 struct edgeport_port *edge_port; 1884 struct tty_struct *tty; 1885 struct device *dev; 1886 __u8 code = edge_serial->rxStatusCode; 1887 1888 /* switch the port pointer to the one being currently talked about */ 1889 port = edge_serial->serial->port[edge_serial->rxPort]; 1890 edge_port = usb_get_serial_port_data(port); 1891 if (edge_port == NULL) { 1892 dev_err(&edge_serial->serial->dev->dev, 1893 "%s - edge_port == NULL for port %d\n", 1894 __func__, edge_serial->rxPort); 1895 return; 1896 } 1897 dev = &port->dev; 1898 1899 if (code == IOSP_EXT_STATUS) { 1900 switch (byte2) { 1901 case IOSP_EXT_STATUS_CHASE_RSP: 1902 /* we want to do EXT status regardless of port 1903 * open/closed */ 1904 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1905 __func__, edge_serial->rxPort, byte3); 1906 /* Currently, the only EXT_STATUS is Chase, so process 1907 * here instead of one more call to one more subroutine 1908 * If/when more EXT_STATUS, there'll be more work to do 1909 * Also, we currently clear flag and close the port 1910 * regardless of content of above's Byte3. 1911 * We could choose to do something else when Byte3 says 1912 * Timeout on Chase from Edgeport, like wait longer in 1913 * block_until_chase_response, but for now we don't. 1914 */ 1915 edge_port->chaseResponsePending = false; 1916 wake_up(&edge_port->wait_chase); 1917 return; 1918 1919 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1920 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1921 __func__, edge_serial->rxPort, byte3); 1922 /* Port->RxCheckRsp = true; */ 1923 return; 1924 } 1925 } 1926 1927 if (code == IOSP_STATUS_OPEN_RSP) { 1928 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1929 edge_port->maxTxCredits = edge_port->txCredits; 1930 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1931 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1932 handle_new_msr(edge_port, byte2); 1933 1934 /* send the current line settings to the port so we are 1935 in sync with any further termios calls */ 1936 tty = tty_port_tty_get(&edge_port->port->port); 1937 if (tty) { 1938 change_port_settings(tty, 1939 edge_port, &tty->termios); 1940 tty_kref_put(tty); 1941 } 1942 1943 /* we have completed the open */ 1944 edge_port->openPending = false; 1945 edge_port->open = true; 1946 wake_up(&edge_port->wait_open); 1947 return; 1948 } 1949 1950 /* If port is closed, silently discard all rcvd status. We can 1951 * have cases where buffered status is received AFTER the close 1952 * port command is sent to the Edgeport. 1953 */ 1954 if (!edge_port->open || edge_port->closePending) 1955 return; 1956 1957 switch (code) { 1958 /* Not currently sent by Edgeport */ 1959 case IOSP_STATUS_LSR: 1960 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1961 __func__, edge_serial->rxPort, byte2); 1962 handle_new_lsr(edge_port, false, byte2, 0); 1963 break; 1964 1965 case IOSP_STATUS_LSR_DATA: 1966 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1967 __func__, edge_serial->rxPort, byte2, byte3); 1968 /* byte2 is LSR Register */ 1969 /* byte3 is broken data byte */ 1970 handle_new_lsr(edge_port, true, byte2, byte3); 1971 break; 1972 /* 1973 * case IOSP_EXT_4_STATUS: 1974 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1975 * __func__, edge_serial->rxPort, byte2, byte3); 1976 * break; 1977 */ 1978 case IOSP_STATUS_MSR: 1979 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1980 __func__, edge_serial->rxPort, byte2); 1981 /* 1982 * Process this new modem status and generate appropriate 1983 * events, etc, based on the new status. This routine 1984 * also saves the MSR in Port->ShadowMsr. 1985 */ 1986 handle_new_msr(edge_port, byte2); 1987 break; 1988 1989 default: 1990 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1991 break; 1992 } 1993 } 1994 1995 1996 /***************************************************************************** 1997 * edge_tty_recv 1998 * this function passes data on to the tty flip buffer 1999 *****************************************************************************/ 2000 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 2001 int length) 2002 { 2003 int cnt; 2004 2005 cnt = tty_insert_flip_string(&port->port, data, length); 2006 if (cnt < length) { 2007 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 2008 __func__, length - cnt); 2009 } 2010 data += cnt; 2011 length -= cnt; 2012 2013 tty_flip_buffer_push(&port->port); 2014 } 2015 2016 2017 /***************************************************************************** 2018 * handle_new_msr 2019 * this function handles any change to the msr register for a port. 2020 *****************************************************************************/ 2021 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 2022 { 2023 struct async_icount *icount; 2024 2025 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 2026 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 2027 icount = &edge_port->port->icount; 2028 2029 /* update input line counters */ 2030 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 2031 icount->cts++; 2032 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 2033 icount->dsr++; 2034 if (newMsr & EDGEPORT_MSR_DELTA_CD) 2035 icount->dcd++; 2036 if (newMsr & EDGEPORT_MSR_DELTA_RI) 2037 icount->rng++; 2038 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 2039 } 2040 2041 /* Save the new modem status */ 2042 edge_port->shadowMSR = newMsr & 0xf0; 2043 } 2044 2045 2046 /***************************************************************************** 2047 * handle_new_lsr 2048 * this function handles any change to the lsr register for a port. 2049 *****************************************************************************/ 2050 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 2051 __u8 lsr, __u8 data) 2052 { 2053 __u8 newLsr = (__u8) (lsr & (__u8) 2054 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 2055 struct async_icount *icount; 2056 2057 edge_port->shadowLSR = lsr; 2058 2059 if (newLsr & LSR_BREAK) { 2060 /* 2061 * Parity and Framing errors only count if they 2062 * occur exclusive of a break being 2063 * received. 2064 */ 2065 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 2066 } 2067 2068 /* Place LSR data byte into Rx buffer */ 2069 if (lsrData) 2070 edge_tty_recv(edge_port->port, &data, 1); 2071 2072 /* update input line counters */ 2073 icount = &edge_port->port->icount; 2074 if (newLsr & LSR_BREAK) 2075 icount->brk++; 2076 if (newLsr & LSR_OVER_ERR) 2077 icount->overrun++; 2078 if (newLsr & LSR_PAR_ERR) 2079 icount->parity++; 2080 if (newLsr & LSR_FRM_ERR) 2081 icount->frame++; 2082 } 2083 2084 2085 /**************************************************************************** 2086 * sram_write 2087 * writes a number of bytes to the Edgeport device's sram starting at the 2088 * given address. 2089 * If successful returns the number of bytes written, otherwise it returns 2090 * a negative error number of the problem. 2091 ****************************************************************************/ 2092 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2093 __u16 length, const __u8 *data) 2094 { 2095 int result; 2096 __u16 current_length; 2097 unsigned char *transfer_buffer; 2098 2099 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 2100 2101 transfer_buffer = kmalloc(64, GFP_KERNEL); 2102 if (!transfer_buffer) 2103 return -ENOMEM; 2104 2105 /* need to split these writes up into 64 byte chunks */ 2106 result = 0; 2107 while (length > 0) { 2108 if (length > 64) 2109 current_length = 64; 2110 else 2111 current_length = length; 2112 2113 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 2114 memcpy(transfer_buffer, data, current_length); 2115 result = usb_control_msg(serial->dev, 2116 usb_sndctrlpipe(serial->dev, 0), 2117 USB_REQUEST_ION_WRITE_RAM, 2118 0x40, addr, extAddr, transfer_buffer, 2119 current_length, 300); 2120 if (result < 0) 2121 break; 2122 length -= current_length; 2123 addr += current_length; 2124 data += current_length; 2125 } 2126 2127 kfree(transfer_buffer); 2128 return result; 2129 } 2130 2131 2132 /**************************************************************************** 2133 * rom_write 2134 * writes a number of bytes to the Edgeport device's ROM starting at the 2135 * given address. 2136 * If successful returns the number of bytes written, otherwise it returns 2137 * a negative error number of the problem. 2138 ****************************************************************************/ 2139 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2140 __u16 length, const __u8 *data) 2141 { 2142 int result; 2143 __u16 current_length; 2144 unsigned char *transfer_buffer; 2145 2146 transfer_buffer = kmalloc(64, GFP_KERNEL); 2147 if (!transfer_buffer) 2148 return -ENOMEM; 2149 2150 /* need to split these writes up into 64 byte chunks */ 2151 result = 0; 2152 while (length > 0) { 2153 if (length > 64) 2154 current_length = 64; 2155 else 2156 current_length = length; 2157 memcpy(transfer_buffer, data, current_length); 2158 result = usb_control_msg(serial->dev, 2159 usb_sndctrlpipe(serial->dev, 0), 2160 USB_REQUEST_ION_WRITE_ROM, 0x40, 2161 addr, extAddr, 2162 transfer_buffer, current_length, 300); 2163 if (result < 0) 2164 break; 2165 length -= current_length; 2166 addr += current_length; 2167 data += current_length; 2168 } 2169 2170 kfree(transfer_buffer); 2171 return result; 2172 } 2173 2174 2175 /**************************************************************************** 2176 * rom_read 2177 * reads a number of bytes from the Edgeport device starting at the given 2178 * address. 2179 * Returns zero on success or a negative error number. 2180 ****************************************************************************/ 2181 static int rom_read(struct usb_serial *serial, __u16 extAddr, 2182 __u16 addr, __u16 length, __u8 *data) 2183 { 2184 int result; 2185 __u16 current_length; 2186 unsigned char *transfer_buffer; 2187 2188 transfer_buffer = kmalloc(64, GFP_KERNEL); 2189 if (!transfer_buffer) 2190 return -ENOMEM; 2191 2192 /* need to split these reads up into 64 byte chunks */ 2193 result = 0; 2194 while (length > 0) { 2195 if (length > 64) 2196 current_length = 64; 2197 else 2198 current_length = length; 2199 result = usb_control_msg(serial->dev, 2200 usb_rcvctrlpipe(serial->dev, 0), 2201 USB_REQUEST_ION_READ_ROM, 2202 0xC0, addr, extAddr, transfer_buffer, 2203 current_length, 300); 2204 if (result < current_length) { 2205 if (result >= 0) 2206 result = -EIO; 2207 break; 2208 } 2209 memcpy(data, transfer_buffer, current_length); 2210 length -= current_length; 2211 addr += current_length; 2212 data += current_length; 2213 2214 result = 0; 2215 } 2216 2217 kfree(transfer_buffer); 2218 return result; 2219 } 2220 2221 2222 /**************************************************************************** 2223 * send_iosp_ext_cmd 2224 * Is used to send a IOSP message to the Edgeport device 2225 ****************************************************************************/ 2226 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2227 __u8 command, __u8 param) 2228 { 2229 unsigned char *buffer; 2230 unsigned char *currentCommand; 2231 int length = 0; 2232 int status = 0; 2233 2234 buffer = kmalloc(10, GFP_ATOMIC); 2235 if (!buffer) 2236 return -ENOMEM; 2237 2238 currentCommand = buffer; 2239 2240 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2241 command, param); 2242 2243 status = write_cmd_usb(edge_port, buffer, length); 2244 if (status) { 2245 /* something bad happened, let's free up the memory */ 2246 kfree(buffer); 2247 } 2248 2249 return status; 2250 } 2251 2252 2253 /***************************************************************************** 2254 * write_cmd_usb 2255 * this function writes the given buffer out to the bulk write endpoint. 2256 *****************************************************************************/ 2257 static int write_cmd_usb(struct edgeport_port *edge_port, 2258 unsigned char *buffer, int length) 2259 { 2260 struct edgeport_serial *edge_serial = 2261 usb_get_serial_data(edge_port->port->serial); 2262 struct device *dev = &edge_port->port->dev; 2263 int status = 0; 2264 struct urb *urb; 2265 2266 usb_serial_debug_data(dev, __func__, length, buffer); 2267 2268 /* Allocate our next urb */ 2269 urb = usb_alloc_urb(0, GFP_ATOMIC); 2270 if (!urb) 2271 return -ENOMEM; 2272 2273 atomic_inc(&CmdUrbs); 2274 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2275 __func__, urb, atomic_read(&CmdUrbs)); 2276 2277 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2278 usb_sndbulkpipe(edge_serial->serial->dev, 2279 edge_serial->bulk_out_endpoint), 2280 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2281 2282 edge_port->commandPending = true; 2283 status = usb_submit_urb(urb, GFP_ATOMIC); 2284 2285 if (status) { 2286 /* something went wrong */ 2287 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2288 __func__, status); 2289 usb_kill_urb(urb); 2290 usb_free_urb(urb); 2291 atomic_dec(&CmdUrbs); 2292 return status; 2293 } 2294 2295 #if 0 2296 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2297 2298 if (edge_port->commandPending) { 2299 /* command timed out */ 2300 dev_dbg(dev, "%s - command timed out\n", __func__); 2301 status = -EINVAL; 2302 } 2303 #endif 2304 return status; 2305 } 2306 2307 2308 /***************************************************************************** 2309 * send_cmd_write_baud_rate 2310 * this function sends the proper command to change the baud rate of the 2311 * specified port. 2312 *****************************************************************************/ 2313 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2314 int baudRate) 2315 { 2316 struct edgeport_serial *edge_serial = 2317 usb_get_serial_data(edge_port->port->serial); 2318 struct device *dev = &edge_port->port->dev; 2319 unsigned char *cmdBuffer; 2320 unsigned char *currCmd; 2321 int cmdLen = 0; 2322 int divisor; 2323 int status; 2324 u32 number = edge_port->port->port_number; 2325 2326 if (edge_serial->is_epic && 2327 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2328 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2329 baudRate); 2330 return 0; 2331 } 2332 2333 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2334 2335 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2336 if (status) { 2337 dev_err(dev, "%s - bad baud rate\n", __func__); 2338 return status; 2339 } 2340 2341 /* Alloc memory for the string of commands. */ 2342 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2343 if (!cmdBuffer) 2344 return -ENOMEM; 2345 2346 currCmd = cmdBuffer; 2347 2348 /* Enable access to divisor latch */ 2349 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2350 2351 /* Write the divisor itself */ 2352 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2353 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2354 2355 /* Restore original value to disable access to divisor latch */ 2356 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2357 edge_port->shadowLCR); 2358 2359 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2360 if (status) { 2361 /* something bad happened, let's free up the memory */ 2362 kfree(cmdBuffer); 2363 } 2364 2365 return status; 2366 } 2367 2368 2369 /***************************************************************************** 2370 * calc_baud_rate_divisor 2371 * this function calculates the proper baud rate divisor for the specified 2372 * baud rate. 2373 *****************************************************************************/ 2374 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2375 { 2376 int i; 2377 __u16 custom; 2378 2379 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2380 if (divisor_table[i].BaudRate == baudrate) { 2381 *divisor = divisor_table[i].Divisor; 2382 return 0; 2383 } 2384 } 2385 2386 /* We have tried all of the standard baud rates 2387 * lets try to calculate the divisor for this baud rate 2388 * Make sure the baud rate is reasonable */ 2389 if (baudrate > 50 && baudrate < 230400) { 2390 /* get divisor */ 2391 custom = (__u16)((230400L + baudrate/2) / baudrate); 2392 2393 *divisor = custom; 2394 2395 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2396 return 0; 2397 } 2398 2399 return -1; 2400 } 2401 2402 2403 /***************************************************************************** 2404 * send_cmd_write_uart_register 2405 * this function builds up a uart register message and sends to the device. 2406 *****************************************************************************/ 2407 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2408 __u8 regNum, __u8 regValue) 2409 { 2410 struct edgeport_serial *edge_serial = 2411 usb_get_serial_data(edge_port->port->serial); 2412 struct device *dev = &edge_port->port->dev; 2413 unsigned char *cmdBuffer; 2414 unsigned char *currCmd; 2415 unsigned long cmdLen = 0; 2416 int status; 2417 2418 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2419 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2420 2421 if (edge_serial->is_epic && 2422 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2423 regNum == MCR) { 2424 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2425 return 0; 2426 } 2427 2428 if (edge_serial->is_epic && 2429 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2430 regNum == LCR) { 2431 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2432 return 0; 2433 } 2434 2435 /* Alloc memory for the string of commands. */ 2436 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2437 if (cmdBuffer == NULL) 2438 return -ENOMEM; 2439 2440 currCmd = cmdBuffer; 2441 2442 /* Build a cmd in the buffer to write the given register */ 2443 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2444 regNum, regValue); 2445 2446 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2447 if (status) { 2448 /* something bad happened, let's free up the memory */ 2449 kfree(cmdBuffer); 2450 } 2451 2452 return status; 2453 } 2454 2455 2456 /***************************************************************************** 2457 * change_port_settings 2458 * This routine is called to set the UART on the device to match the 2459 * specified new settings. 2460 *****************************************************************************/ 2461 2462 static void change_port_settings(struct tty_struct *tty, 2463 struct edgeport_port *edge_port, struct ktermios *old_termios) 2464 { 2465 struct device *dev = &edge_port->port->dev; 2466 struct edgeport_serial *edge_serial = 2467 usb_get_serial_data(edge_port->port->serial); 2468 int baud; 2469 unsigned cflag; 2470 __u8 mask = 0xff; 2471 __u8 lData; 2472 __u8 lParity; 2473 __u8 lStop; 2474 __u8 rxFlow; 2475 __u8 txFlow; 2476 int status; 2477 2478 if (!edge_port->open && 2479 !edge_port->openPending) { 2480 dev_dbg(dev, "%s - port not opened\n", __func__); 2481 return; 2482 } 2483 2484 cflag = tty->termios.c_cflag; 2485 2486 switch (cflag & CSIZE) { 2487 case CS5: 2488 lData = LCR_BITS_5; mask = 0x1f; 2489 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2490 break; 2491 case CS6: 2492 lData = LCR_BITS_6; mask = 0x3f; 2493 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2494 break; 2495 case CS7: 2496 lData = LCR_BITS_7; mask = 0x7f; 2497 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2498 break; 2499 default: 2500 case CS8: 2501 lData = LCR_BITS_8; 2502 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2503 break; 2504 } 2505 2506 lParity = LCR_PAR_NONE; 2507 if (cflag & PARENB) { 2508 if (cflag & CMSPAR) { 2509 if (cflag & PARODD) { 2510 lParity = LCR_PAR_MARK; 2511 dev_dbg(dev, "%s - parity = mark\n", __func__); 2512 } else { 2513 lParity = LCR_PAR_SPACE; 2514 dev_dbg(dev, "%s - parity = space\n", __func__); 2515 } 2516 } else if (cflag & PARODD) { 2517 lParity = LCR_PAR_ODD; 2518 dev_dbg(dev, "%s - parity = odd\n", __func__); 2519 } else { 2520 lParity = LCR_PAR_EVEN; 2521 dev_dbg(dev, "%s - parity = even\n", __func__); 2522 } 2523 } else { 2524 dev_dbg(dev, "%s - parity = none\n", __func__); 2525 } 2526 2527 if (cflag & CSTOPB) { 2528 lStop = LCR_STOP_2; 2529 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2530 } else { 2531 lStop = LCR_STOP_1; 2532 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2533 } 2534 2535 /* figure out the flow control settings */ 2536 rxFlow = txFlow = 0x00; 2537 if (cflag & CRTSCTS) { 2538 rxFlow |= IOSP_RX_FLOW_RTS; 2539 txFlow |= IOSP_TX_FLOW_CTS; 2540 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2541 } else { 2542 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2543 } 2544 2545 /* if we are implementing XON/XOFF, set the start and stop character 2546 in the device */ 2547 if (I_IXOFF(tty) || I_IXON(tty)) { 2548 unsigned char stop_char = STOP_CHAR(tty); 2549 unsigned char start_char = START_CHAR(tty); 2550 2551 if (!edge_serial->is_epic || 2552 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2553 send_iosp_ext_cmd(edge_port, 2554 IOSP_CMD_SET_XON_CHAR, start_char); 2555 send_iosp_ext_cmd(edge_port, 2556 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2557 } 2558 2559 /* if we are implementing INBOUND XON/XOFF */ 2560 if (I_IXOFF(tty)) { 2561 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2562 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2563 __func__, start_char, stop_char); 2564 } else { 2565 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2566 } 2567 2568 /* if we are implementing OUTBOUND XON/XOFF */ 2569 if (I_IXON(tty)) { 2570 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2571 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2572 __func__, start_char, stop_char); 2573 } else { 2574 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2575 } 2576 } 2577 2578 /* Set flow control to the configured value */ 2579 if (!edge_serial->is_epic || 2580 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2581 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2582 if (!edge_serial->is_epic || 2583 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2584 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2585 2586 2587 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2588 edge_port->shadowLCR |= (lData | lParity | lStop); 2589 2590 edge_port->validDataMask = mask; 2591 2592 /* Send the updated LCR value to the EdgePort */ 2593 status = send_cmd_write_uart_register(edge_port, LCR, 2594 edge_port->shadowLCR); 2595 if (status != 0) 2596 return; 2597 2598 /* set up the MCR register and send it to the EdgePort */ 2599 edge_port->shadowMCR = MCR_MASTER_IE; 2600 if (cflag & CBAUD) 2601 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2602 2603 status = send_cmd_write_uart_register(edge_port, MCR, 2604 edge_port->shadowMCR); 2605 if (status != 0) 2606 return; 2607 2608 /* Determine divisor based on baud rate */ 2609 baud = tty_get_baud_rate(tty); 2610 if (!baud) { 2611 /* pick a default, any default... */ 2612 baud = 9600; 2613 } 2614 2615 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2616 status = send_cmd_write_baud_rate(edge_port, baud); 2617 if (status == -1) { 2618 /* Speed change was not possible - put back the old speed */ 2619 baud = tty_termios_baud_rate(old_termios); 2620 tty_encode_baud_rate(tty, baud, baud); 2621 } 2622 } 2623 2624 2625 /**************************************************************************** 2626 * unicode_to_ascii 2627 * Turns a string from Unicode into ASCII. 2628 * Doesn't do a good job with any characters that are outside the normal 2629 * ASCII range, but it's only for debugging... 2630 * NOTE: expects the unicode in LE format 2631 ****************************************************************************/ 2632 static void unicode_to_ascii(char *string, int buflen, 2633 __le16 *unicode, int unicode_size) 2634 { 2635 int i; 2636 2637 if (buflen <= 0) /* never happens, but... */ 2638 return; 2639 --buflen; /* space for nul */ 2640 2641 for (i = 0; i < unicode_size; i++) { 2642 if (i >= buflen) 2643 break; 2644 string[i] = (char)(le16_to_cpu(unicode[i])); 2645 } 2646 string[i] = 0x00; 2647 } 2648 2649 2650 /**************************************************************************** 2651 * get_manufacturing_desc 2652 * reads in the manufacturing descriptor and stores it into the serial 2653 * structure. 2654 ****************************************************************************/ 2655 static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2656 { 2657 struct device *dev = &edge_serial->serial->dev->dev; 2658 int response; 2659 2660 dev_dbg(dev, "getting manufacturer descriptor\n"); 2661 2662 response = rom_read(edge_serial->serial, 2663 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2664 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2665 EDGE_MANUF_DESC_LEN, 2666 (__u8 *)(&edge_serial->manuf_descriptor)); 2667 2668 if (response < 0) { 2669 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2670 response); 2671 } else { 2672 char string[30]; 2673 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2674 dev_dbg(dev, " RomSize: %dK\n", 2675 edge_serial->manuf_descriptor.RomSize); 2676 dev_dbg(dev, " RamSize: %dK\n", 2677 edge_serial->manuf_descriptor.RamSize); 2678 dev_dbg(dev, " CpuRev: %d\n", 2679 edge_serial->manuf_descriptor.CpuRev); 2680 dev_dbg(dev, " BoardRev: %d\n", 2681 edge_serial->manuf_descriptor.BoardRev); 2682 dev_dbg(dev, " NumPorts: %d\n", 2683 edge_serial->manuf_descriptor.NumPorts); 2684 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2685 edge_serial->manuf_descriptor.DescDate[0], 2686 edge_serial->manuf_descriptor.DescDate[1], 2687 edge_serial->manuf_descriptor.DescDate[2]+1900); 2688 unicode_to_ascii(string, sizeof(string), 2689 edge_serial->manuf_descriptor.SerialNumber, 2690 edge_serial->manuf_descriptor.SerNumLength/2); 2691 dev_dbg(dev, " SerialNumber: %s\n", string); 2692 unicode_to_ascii(string, sizeof(string), 2693 edge_serial->manuf_descriptor.AssemblyNumber, 2694 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2695 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2696 unicode_to_ascii(string, sizeof(string), 2697 edge_serial->manuf_descriptor.OemAssyNumber, 2698 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2699 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2700 dev_dbg(dev, " UartType: %d\n", 2701 edge_serial->manuf_descriptor.UartType); 2702 dev_dbg(dev, " IonPid: %d\n", 2703 edge_serial->manuf_descriptor.IonPid); 2704 dev_dbg(dev, " IonConfig: %d\n", 2705 edge_serial->manuf_descriptor.IonConfig); 2706 } 2707 } 2708 2709 2710 /**************************************************************************** 2711 * get_boot_desc 2712 * reads in the bootloader descriptor and stores it into the serial 2713 * structure. 2714 ****************************************************************************/ 2715 static void get_boot_desc(struct edgeport_serial *edge_serial) 2716 { 2717 struct device *dev = &edge_serial->serial->dev->dev; 2718 int response; 2719 2720 dev_dbg(dev, "getting boot descriptor\n"); 2721 2722 response = rom_read(edge_serial->serial, 2723 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2724 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2725 EDGE_BOOT_DESC_LEN, 2726 (__u8 *)(&edge_serial->boot_descriptor)); 2727 2728 if (response < 0) { 2729 dev_err(dev, "error in getting boot descriptor: %d\n", 2730 response); 2731 } else { 2732 dev_dbg(dev, "**Boot Descriptor:\n"); 2733 dev_dbg(dev, " BootCodeLength: %d\n", 2734 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2735 dev_dbg(dev, " MajorVersion: %d\n", 2736 edge_serial->boot_descriptor.MajorVersion); 2737 dev_dbg(dev, " MinorVersion: %d\n", 2738 edge_serial->boot_descriptor.MinorVersion); 2739 dev_dbg(dev, " BuildNumber: %d\n", 2740 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2741 dev_dbg(dev, " Capabilities: 0x%x\n", 2742 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2743 dev_dbg(dev, " UConfig0: %d\n", 2744 edge_serial->boot_descriptor.UConfig0); 2745 dev_dbg(dev, " UConfig1: %d\n", 2746 edge_serial->boot_descriptor.UConfig1); 2747 } 2748 } 2749 2750 2751 /**************************************************************************** 2752 * load_application_firmware 2753 * This is called to load the application firmware to the device 2754 ****************************************************************************/ 2755 static void load_application_firmware(struct edgeport_serial *edge_serial) 2756 { 2757 struct device *dev = &edge_serial->serial->dev->dev; 2758 const struct ihex_binrec *rec; 2759 const struct firmware *fw; 2760 const char *fw_name; 2761 const char *fw_info; 2762 int response; 2763 __u32 Operaddr; 2764 __u16 build; 2765 2766 switch (edge_serial->product_info.iDownloadFile) { 2767 case EDGE_DOWNLOAD_FILE_I930: 2768 fw_info = "downloading firmware version (930)"; 2769 fw_name = "edgeport/down.fw"; 2770 break; 2771 2772 case EDGE_DOWNLOAD_FILE_80251: 2773 fw_info = "downloading firmware version (80251)"; 2774 fw_name = "edgeport/down2.fw"; 2775 break; 2776 2777 case EDGE_DOWNLOAD_FILE_NONE: 2778 dev_dbg(dev, "No download file specified, skipping download\n"); 2779 return; 2780 2781 default: 2782 return; 2783 } 2784 2785 response = request_ihex_firmware(&fw, fw_name, 2786 &edge_serial->serial->dev->dev); 2787 if (response) { 2788 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2789 fw_name, response); 2790 return; 2791 } 2792 2793 rec = (const struct ihex_binrec *)fw->data; 2794 build = (rec->data[2] << 8) | rec->data[3]; 2795 2796 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2797 2798 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2799 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2800 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2801 2802 for (rec = ihex_next_binrec(rec); rec; 2803 rec = ihex_next_binrec(rec)) { 2804 Operaddr = be32_to_cpu(rec->addr); 2805 response = sram_write(edge_serial->serial, 2806 Operaddr >> 16, 2807 Operaddr & 0xFFFF, 2808 be16_to_cpu(rec->len), 2809 &rec->data[0]); 2810 if (response < 0) { 2811 dev_err(&edge_serial->serial->dev->dev, 2812 "sram_write failed (%x, %x, %d)\n", 2813 Operaddr >> 16, Operaddr & 0xFFFF, 2814 be16_to_cpu(rec->len)); 2815 break; 2816 } 2817 } 2818 2819 dev_dbg(dev, "sending exec_dl_code\n"); 2820 response = usb_control_msg (edge_serial->serial->dev, 2821 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2822 USB_REQUEST_ION_EXEC_DL_CODE, 2823 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2824 2825 release_firmware(fw); 2826 } 2827 2828 2829 /**************************************************************************** 2830 * edge_startup 2831 ****************************************************************************/ 2832 static int edge_startup(struct usb_serial *serial) 2833 { 2834 struct edgeport_serial *edge_serial; 2835 struct usb_device *dev; 2836 struct device *ddev = &serial->dev->dev; 2837 int i; 2838 int response; 2839 bool interrupt_in_found; 2840 bool bulk_in_found; 2841 bool bulk_out_found; 2842 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2843 EDGE_COMPATIBILITY_MASK1, 2844 EDGE_COMPATIBILITY_MASK2 }; 2845 2846 dev = serial->dev; 2847 2848 /* create our private serial structure */ 2849 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2850 if (!edge_serial) 2851 return -ENOMEM; 2852 2853 spin_lock_init(&edge_serial->es_lock); 2854 edge_serial->serial = serial; 2855 usb_set_serial_data(serial, edge_serial); 2856 2857 /* get the name for the device from the device */ 2858 i = usb_string(dev, dev->descriptor.iManufacturer, 2859 &edge_serial->name[0], MAX_NAME_LEN+1); 2860 if (i < 0) 2861 i = 0; 2862 edge_serial->name[i++] = ' '; 2863 usb_string(dev, dev->descriptor.iProduct, 2864 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2865 2866 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2867 2868 /* Read the epic descriptor */ 2869 if (get_epic_descriptor(edge_serial) < 0) { 2870 /* memcpy descriptor to Supports structures */ 2871 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2872 sizeof(struct edge_compatibility_bits)); 2873 2874 /* get the manufacturing descriptor for this device */ 2875 get_manufacturing_desc(edge_serial); 2876 2877 /* get the boot descriptor */ 2878 get_boot_desc(edge_serial); 2879 2880 get_product_info(edge_serial); 2881 } 2882 2883 /* set the number of ports from the manufacturing description */ 2884 /* serial->num_ports = serial->product_info.NumPorts; */ 2885 if ((!edge_serial->is_epic) && 2886 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2887 dev_warn(ddev, 2888 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2889 edge_serial->product_info.NumPorts, 2890 serial->num_ports); 2891 } 2892 2893 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2894 2895 /* If not an EPiC device */ 2896 if (!edge_serial->is_epic) { 2897 /* now load the application firmware into this device */ 2898 load_application_firmware(edge_serial); 2899 2900 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2901 2902 /* Check current Edgeport EEPROM and update if necessary */ 2903 update_edgeport_E2PROM(edge_serial); 2904 2905 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2906 2907 /* set the configuration to use #1 */ 2908 /* dev_dbg(ddev, "set_configuration 1\n"); */ 2909 /* usb_set_configuration (dev, 1); */ 2910 } 2911 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2912 edge_serial->product_info.FirmwareMajorVersion, 2913 edge_serial->product_info.FirmwareMinorVersion, 2914 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2915 2916 /* we set up the pointers to the endpoints in the edge_open function, 2917 * as the structures aren't created yet. */ 2918 2919 response = 0; 2920 2921 if (edge_serial->is_epic) { 2922 /* EPIC thing, set up our interrupt polling now and our read 2923 * urb, so that the device knows it really is connected. */ 2924 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2925 for (i = 0; i < serial->interface->altsetting[0] 2926 .desc.bNumEndpoints; ++i) { 2927 struct usb_endpoint_descriptor *endpoint; 2928 int buffer_size; 2929 2930 endpoint = &serial->interface->altsetting[0]. 2931 endpoint[i].desc; 2932 buffer_size = usb_endpoint_maxp(endpoint); 2933 if (!interrupt_in_found && 2934 (usb_endpoint_is_int_in(endpoint))) { 2935 /* we found a interrupt in endpoint */ 2936 dev_dbg(ddev, "found interrupt in\n"); 2937 2938 /* not set up yet, so do it now */ 2939 edge_serial->interrupt_read_urb = 2940 usb_alloc_urb(0, GFP_KERNEL); 2941 if (!edge_serial->interrupt_read_urb) { 2942 response = -ENOMEM; 2943 break; 2944 } 2945 2946 edge_serial->interrupt_in_buffer = 2947 kmalloc(buffer_size, GFP_KERNEL); 2948 if (!edge_serial->interrupt_in_buffer) { 2949 response = -ENOMEM; 2950 break; 2951 } 2952 edge_serial->interrupt_in_endpoint = 2953 endpoint->bEndpointAddress; 2954 2955 /* set up our interrupt urb */ 2956 usb_fill_int_urb( 2957 edge_serial->interrupt_read_urb, 2958 dev, 2959 usb_rcvintpipe(dev, 2960 endpoint->bEndpointAddress), 2961 edge_serial->interrupt_in_buffer, 2962 buffer_size, 2963 edge_interrupt_callback, 2964 edge_serial, 2965 endpoint->bInterval); 2966 2967 interrupt_in_found = true; 2968 } 2969 2970 if (!bulk_in_found && 2971 (usb_endpoint_is_bulk_in(endpoint))) { 2972 /* we found a bulk in endpoint */ 2973 dev_dbg(ddev, "found bulk in\n"); 2974 2975 /* not set up yet, so do it now */ 2976 edge_serial->read_urb = 2977 usb_alloc_urb(0, GFP_KERNEL); 2978 if (!edge_serial->read_urb) { 2979 response = -ENOMEM; 2980 break; 2981 } 2982 2983 edge_serial->bulk_in_buffer = 2984 kmalloc(buffer_size, GFP_KERNEL); 2985 if (!edge_serial->bulk_in_buffer) { 2986 response = -ENOMEM; 2987 break; 2988 } 2989 edge_serial->bulk_in_endpoint = 2990 endpoint->bEndpointAddress; 2991 2992 /* set up our bulk in urb */ 2993 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2994 usb_rcvbulkpipe(dev, 2995 endpoint->bEndpointAddress), 2996 edge_serial->bulk_in_buffer, 2997 usb_endpoint_maxp(endpoint), 2998 edge_bulk_in_callback, 2999 edge_serial); 3000 bulk_in_found = true; 3001 } 3002 3003 if (!bulk_out_found && 3004 (usb_endpoint_is_bulk_out(endpoint))) { 3005 /* we found a bulk out endpoint */ 3006 dev_dbg(ddev, "found bulk out\n"); 3007 edge_serial->bulk_out_endpoint = 3008 endpoint->bEndpointAddress; 3009 bulk_out_found = true; 3010 } 3011 } 3012 3013 if (response || !interrupt_in_found || !bulk_in_found || 3014 !bulk_out_found) { 3015 if (!response) { 3016 dev_err(ddev, "expected endpoints not found\n"); 3017 response = -ENODEV; 3018 } 3019 3020 usb_free_urb(edge_serial->interrupt_read_urb); 3021 kfree(edge_serial->interrupt_in_buffer); 3022 3023 usb_free_urb(edge_serial->read_urb); 3024 kfree(edge_serial->bulk_in_buffer); 3025 3026 kfree(edge_serial); 3027 3028 return response; 3029 } 3030 3031 /* start interrupt read for this edgeport this interrupt will 3032 * continue as long as the edgeport is connected */ 3033 response = usb_submit_urb(edge_serial->interrupt_read_urb, 3034 GFP_KERNEL); 3035 if (response) 3036 dev_err(ddev, "%s - Error %d submitting control urb\n", 3037 __func__, response); 3038 } 3039 return response; 3040 } 3041 3042 3043 /**************************************************************************** 3044 * edge_disconnect 3045 * This function is called whenever the device is removed from the usb bus. 3046 ****************************************************************************/ 3047 static void edge_disconnect(struct usb_serial *serial) 3048 { 3049 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3050 3051 if (edge_serial->is_epic) { 3052 usb_kill_urb(edge_serial->interrupt_read_urb); 3053 usb_kill_urb(edge_serial->read_urb); 3054 } 3055 } 3056 3057 3058 /**************************************************************************** 3059 * edge_release 3060 * This function is called when the device structure is deallocated. 3061 ****************************************************************************/ 3062 static void edge_release(struct usb_serial *serial) 3063 { 3064 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3065 3066 if (edge_serial->is_epic) { 3067 usb_kill_urb(edge_serial->interrupt_read_urb); 3068 usb_free_urb(edge_serial->interrupt_read_urb); 3069 kfree(edge_serial->interrupt_in_buffer); 3070 3071 usb_kill_urb(edge_serial->read_urb); 3072 usb_free_urb(edge_serial->read_urb); 3073 kfree(edge_serial->bulk_in_buffer); 3074 } 3075 3076 kfree(edge_serial); 3077 } 3078 3079 static int edge_port_probe(struct usb_serial_port *port) 3080 { 3081 struct edgeport_port *edge_port; 3082 3083 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 3084 if (!edge_port) 3085 return -ENOMEM; 3086 3087 spin_lock_init(&edge_port->ep_lock); 3088 edge_port->port = port; 3089 3090 usb_set_serial_port_data(port, edge_port); 3091 3092 return 0; 3093 } 3094 3095 static int edge_port_remove(struct usb_serial_port *port) 3096 { 3097 struct edgeport_port *edge_port; 3098 3099 edge_port = usb_get_serial_port_data(port); 3100 kfree(edge_port); 3101 3102 return 0; 3103 } 3104 3105 static struct usb_serial_driver edgeport_2port_device = { 3106 .driver = { 3107 .owner = THIS_MODULE, 3108 .name = "edgeport_2", 3109 }, 3110 .description = "Edgeport 2 port adapter", 3111 .id_table = edgeport_2port_id_table, 3112 .num_ports = 2, 3113 .num_bulk_in = 1, 3114 .num_bulk_out = 1, 3115 .num_interrupt_in = 1, 3116 .open = edge_open, 3117 .close = edge_close, 3118 .throttle = edge_throttle, 3119 .unthrottle = edge_unthrottle, 3120 .attach = edge_startup, 3121 .disconnect = edge_disconnect, 3122 .release = edge_release, 3123 .port_probe = edge_port_probe, 3124 .port_remove = edge_port_remove, 3125 .ioctl = edge_ioctl, 3126 .set_termios = edge_set_termios, 3127 .tiocmget = edge_tiocmget, 3128 .tiocmset = edge_tiocmset, 3129 .tiocmiwait = usb_serial_generic_tiocmiwait, 3130 .get_icount = usb_serial_generic_get_icount, 3131 .write = edge_write, 3132 .write_room = edge_write_room, 3133 .chars_in_buffer = edge_chars_in_buffer, 3134 .break_ctl = edge_break, 3135 .read_int_callback = edge_interrupt_callback, 3136 .read_bulk_callback = edge_bulk_in_callback, 3137 .write_bulk_callback = edge_bulk_out_data_callback, 3138 }; 3139 3140 static struct usb_serial_driver edgeport_4port_device = { 3141 .driver = { 3142 .owner = THIS_MODULE, 3143 .name = "edgeport_4", 3144 }, 3145 .description = "Edgeport 4 port adapter", 3146 .id_table = edgeport_4port_id_table, 3147 .num_ports = 4, 3148 .num_bulk_in = 1, 3149 .num_bulk_out = 1, 3150 .num_interrupt_in = 1, 3151 .open = edge_open, 3152 .close = edge_close, 3153 .throttle = edge_throttle, 3154 .unthrottle = edge_unthrottle, 3155 .attach = edge_startup, 3156 .disconnect = edge_disconnect, 3157 .release = edge_release, 3158 .port_probe = edge_port_probe, 3159 .port_remove = edge_port_remove, 3160 .ioctl = edge_ioctl, 3161 .set_termios = edge_set_termios, 3162 .tiocmget = edge_tiocmget, 3163 .tiocmset = edge_tiocmset, 3164 .tiocmiwait = usb_serial_generic_tiocmiwait, 3165 .get_icount = usb_serial_generic_get_icount, 3166 .write = edge_write, 3167 .write_room = edge_write_room, 3168 .chars_in_buffer = edge_chars_in_buffer, 3169 .break_ctl = edge_break, 3170 .read_int_callback = edge_interrupt_callback, 3171 .read_bulk_callback = edge_bulk_in_callback, 3172 .write_bulk_callback = edge_bulk_out_data_callback, 3173 }; 3174 3175 static struct usb_serial_driver edgeport_8port_device = { 3176 .driver = { 3177 .owner = THIS_MODULE, 3178 .name = "edgeport_8", 3179 }, 3180 .description = "Edgeport 8 port adapter", 3181 .id_table = edgeport_8port_id_table, 3182 .num_ports = 8, 3183 .num_bulk_in = 1, 3184 .num_bulk_out = 1, 3185 .num_interrupt_in = 1, 3186 .open = edge_open, 3187 .close = edge_close, 3188 .throttle = edge_throttle, 3189 .unthrottle = edge_unthrottle, 3190 .attach = edge_startup, 3191 .disconnect = edge_disconnect, 3192 .release = edge_release, 3193 .port_probe = edge_port_probe, 3194 .port_remove = edge_port_remove, 3195 .ioctl = edge_ioctl, 3196 .set_termios = edge_set_termios, 3197 .tiocmget = edge_tiocmget, 3198 .tiocmset = edge_tiocmset, 3199 .tiocmiwait = usb_serial_generic_tiocmiwait, 3200 .get_icount = usb_serial_generic_get_icount, 3201 .write = edge_write, 3202 .write_room = edge_write_room, 3203 .chars_in_buffer = edge_chars_in_buffer, 3204 .break_ctl = edge_break, 3205 .read_int_callback = edge_interrupt_callback, 3206 .read_bulk_callback = edge_bulk_in_callback, 3207 .write_bulk_callback = edge_bulk_out_data_callback, 3208 }; 3209 3210 static struct usb_serial_driver epic_device = { 3211 .driver = { 3212 .owner = THIS_MODULE, 3213 .name = "epic", 3214 }, 3215 .description = "EPiC device", 3216 .id_table = Epic_port_id_table, 3217 .num_ports = 1, 3218 .num_bulk_in = 1, 3219 .num_bulk_out = 1, 3220 .num_interrupt_in = 1, 3221 .open = edge_open, 3222 .close = edge_close, 3223 .throttle = edge_throttle, 3224 .unthrottle = edge_unthrottle, 3225 .attach = edge_startup, 3226 .disconnect = edge_disconnect, 3227 .release = edge_release, 3228 .port_probe = edge_port_probe, 3229 .port_remove = edge_port_remove, 3230 .ioctl = edge_ioctl, 3231 .set_termios = edge_set_termios, 3232 .tiocmget = edge_tiocmget, 3233 .tiocmset = edge_tiocmset, 3234 .tiocmiwait = usb_serial_generic_tiocmiwait, 3235 .get_icount = usb_serial_generic_get_icount, 3236 .write = edge_write, 3237 .write_room = edge_write_room, 3238 .chars_in_buffer = edge_chars_in_buffer, 3239 .break_ctl = edge_break, 3240 .read_int_callback = edge_interrupt_callback, 3241 .read_bulk_callback = edge_bulk_in_callback, 3242 .write_bulk_callback = edge_bulk_out_data_callback, 3243 }; 3244 3245 static struct usb_serial_driver * const serial_drivers[] = { 3246 &edgeport_2port_device, &edgeport_4port_device, 3247 &edgeport_8port_device, &epic_device, NULL 3248 }; 3249 3250 module_usb_serial_driver(serial_drivers, id_table_combined); 3251 3252 MODULE_AUTHOR(DRIVER_AUTHOR); 3253 MODULE_DESCRIPTION(DRIVER_DESC); 3254 MODULE_LICENSE("GPL"); 3255 MODULE_FIRMWARE("edgeport/boot.fw"); 3256 MODULE_FIRMWARE("edgeport/boot2.fw"); 3257 MODULE_FIRMWARE("edgeport/down.fw"); 3258 MODULE_FIRMWARE("edgeport/down2.fw"); 3259