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 unsigned int cflag; 1548 1549 cflag = tty->termios.c_cflag; 1550 dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag); 1551 dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); 1552 1553 if (edge_port == NULL) 1554 return; 1555 1556 if (!edge_port->open) { 1557 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1558 return; 1559 } 1560 1561 /* change the port settings to the new ones specified */ 1562 change_port_settings(tty, edge_port, old_termios); 1563 } 1564 1565 1566 /***************************************************************************** 1567 * get_lsr_info - get line status register info 1568 * 1569 * Purpose: Let user call ioctl() to get info when the UART physically 1570 * is emptied. On bus types like RS485, the transmitter must 1571 * release the bus after transmitting. This must be done when 1572 * the transmit shift register is empty, not be done when the 1573 * transmit holding register is empty. This functionality 1574 * allows an RS485 driver to be written in user space. 1575 *****************************************************************************/ 1576 static int get_lsr_info(struct edgeport_port *edge_port, 1577 unsigned int __user *value) 1578 { 1579 unsigned int result = 0; 1580 unsigned long flags; 1581 1582 spin_lock_irqsave(&edge_port->ep_lock, flags); 1583 if (edge_port->maxTxCredits == edge_port->txCredits && 1584 edge_port->txfifo.count == 0) { 1585 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1586 result = TIOCSER_TEMT; 1587 } 1588 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1589 1590 if (copy_to_user(value, &result, sizeof(int))) 1591 return -EFAULT; 1592 return 0; 1593 } 1594 1595 static int edge_tiocmset(struct tty_struct *tty, 1596 unsigned int set, unsigned int clear) 1597 { 1598 struct usb_serial_port *port = tty->driver_data; 1599 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1600 unsigned int mcr; 1601 1602 mcr = edge_port->shadowMCR; 1603 if (set & TIOCM_RTS) 1604 mcr |= MCR_RTS; 1605 if (set & TIOCM_DTR) 1606 mcr |= MCR_DTR; 1607 if (set & TIOCM_LOOP) 1608 mcr |= MCR_LOOPBACK; 1609 1610 if (clear & TIOCM_RTS) 1611 mcr &= ~MCR_RTS; 1612 if (clear & TIOCM_DTR) 1613 mcr &= ~MCR_DTR; 1614 if (clear & TIOCM_LOOP) 1615 mcr &= ~MCR_LOOPBACK; 1616 1617 edge_port->shadowMCR = mcr; 1618 1619 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1620 1621 return 0; 1622 } 1623 1624 static int edge_tiocmget(struct tty_struct *tty) 1625 { 1626 struct usb_serial_port *port = tty->driver_data; 1627 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1628 unsigned int result = 0; 1629 unsigned int msr; 1630 unsigned int mcr; 1631 1632 msr = edge_port->shadowMSR; 1633 mcr = edge_port->shadowMCR; 1634 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1635 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1636 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1637 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1638 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1639 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1640 1641 return result; 1642 } 1643 1644 static int get_serial_info(struct edgeport_port *edge_port, 1645 struct serial_struct __user *retinfo) 1646 { 1647 struct serial_struct tmp; 1648 1649 memset(&tmp, 0, sizeof(tmp)); 1650 1651 tmp.type = PORT_16550A; 1652 tmp.line = edge_port->port->minor; 1653 tmp.port = edge_port->port->port_number; 1654 tmp.irq = 0; 1655 tmp.xmit_fifo_size = edge_port->maxTxCredits; 1656 tmp.baud_base = 9600; 1657 tmp.close_delay = 5*HZ; 1658 tmp.closing_wait = 30*HZ; 1659 1660 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 1661 return -EFAULT; 1662 return 0; 1663 } 1664 1665 1666 /***************************************************************************** 1667 * SerialIoctl 1668 * this function handles any ioctl calls to the driver 1669 *****************************************************************************/ 1670 static int edge_ioctl(struct tty_struct *tty, 1671 unsigned int cmd, unsigned long arg) 1672 { 1673 struct usb_serial_port *port = tty->driver_data; 1674 DEFINE_WAIT(wait); 1675 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1676 1677 switch (cmd) { 1678 case TIOCSERGETLSR: 1679 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1680 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1681 1682 case TIOCGSERIAL: 1683 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); 1684 return get_serial_info(edge_port, (struct serial_struct __user *) arg); 1685 } 1686 return -ENOIOCTLCMD; 1687 } 1688 1689 1690 /***************************************************************************** 1691 * SerialBreak 1692 * this function sends a break to the port 1693 *****************************************************************************/ 1694 static void edge_break(struct tty_struct *tty, int break_state) 1695 { 1696 struct usb_serial_port *port = tty->driver_data; 1697 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1698 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1699 int status; 1700 1701 if (!edge_serial->is_epic || 1702 edge_serial->epic_descriptor.Supports.IOSPChase) { 1703 /* flush and chase */ 1704 edge_port->chaseResponsePending = true; 1705 1706 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1707 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1708 if (status == 0) { 1709 /* block until chase finished */ 1710 block_until_chase_response(edge_port); 1711 } else { 1712 edge_port->chaseResponsePending = false; 1713 } 1714 } 1715 1716 if (!edge_serial->is_epic || 1717 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1718 if (break_state == -1) { 1719 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1720 status = send_iosp_ext_cmd(edge_port, 1721 IOSP_CMD_SET_BREAK, 0); 1722 } else { 1723 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1724 status = send_iosp_ext_cmd(edge_port, 1725 IOSP_CMD_CLEAR_BREAK, 0); 1726 } 1727 if (status) 1728 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1729 __func__); 1730 } 1731 } 1732 1733 1734 /***************************************************************************** 1735 * process_rcvd_data 1736 * this function handles the data received on the bulk in pipe. 1737 *****************************************************************************/ 1738 static void process_rcvd_data(struct edgeport_serial *edge_serial, 1739 unsigned char *buffer, __u16 bufferLength) 1740 { 1741 struct device *dev = &edge_serial->serial->dev->dev; 1742 struct usb_serial_port *port; 1743 struct edgeport_port *edge_port; 1744 __u16 lastBufferLength; 1745 __u16 rxLen; 1746 1747 lastBufferLength = bufferLength + 1; 1748 1749 while (bufferLength > 0) { 1750 /* failsafe incase we get a message that we don't understand */ 1751 if (lastBufferLength == bufferLength) { 1752 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1753 break; 1754 } 1755 lastBufferLength = bufferLength; 1756 1757 switch (edge_serial->rxState) { 1758 case EXPECT_HDR1: 1759 edge_serial->rxHeader1 = *buffer; 1760 ++buffer; 1761 --bufferLength; 1762 1763 if (bufferLength == 0) { 1764 edge_serial->rxState = EXPECT_HDR2; 1765 break; 1766 } 1767 /* otherwise, drop on through */ 1768 case EXPECT_HDR2: 1769 edge_serial->rxHeader2 = *buffer; 1770 ++buffer; 1771 --bufferLength; 1772 1773 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1774 edge_serial->rxHeader1, edge_serial->rxHeader2); 1775 /* Process depending on whether this header is 1776 * data or status */ 1777 1778 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1779 /* Decode this status header and go to 1780 * EXPECT_HDR1 (if we can process the status 1781 * with only 2 bytes), or go to EXPECT_HDR3 to 1782 * get the third byte. */ 1783 edge_serial->rxPort = 1784 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1785 edge_serial->rxStatusCode = 1786 IOSP_GET_STATUS_CODE( 1787 edge_serial->rxHeader1); 1788 1789 if (!IOSP_STATUS_IS_2BYTE( 1790 edge_serial->rxStatusCode)) { 1791 /* This status needs additional bytes. 1792 * Save what we have and then wait for 1793 * more data. 1794 */ 1795 edge_serial->rxStatusParam 1796 = edge_serial->rxHeader2; 1797 edge_serial->rxState = EXPECT_HDR3; 1798 break; 1799 } 1800 /* We have all the header bytes, process the 1801 status now */ 1802 process_rcvd_status(edge_serial, 1803 edge_serial->rxHeader2, 0); 1804 edge_serial->rxState = EXPECT_HDR1; 1805 break; 1806 } else { 1807 edge_serial->rxPort = 1808 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1809 edge_serial->rxBytesRemaining = 1810 IOSP_GET_HDR_DATA_LEN( 1811 edge_serial->rxHeader1, 1812 edge_serial->rxHeader2); 1813 dev_dbg(dev, "%s - Data for Port %u Len %u\n", 1814 __func__, 1815 edge_serial->rxPort, 1816 edge_serial->rxBytesRemaining); 1817 1818 /* ASSERT(DevExt->RxPort < DevExt->NumPorts); 1819 * ASSERT(DevExt->RxBytesRemaining < 1820 * IOSP_MAX_DATA_LENGTH); 1821 */ 1822 1823 if (bufferLength == 0) { 1824 edge_serial->rxState = EXPECT_DATA; 1825 break; 1826 } 1827 /* Else, drop through */ 1828 } 1829 case EXPECT_DATA: /* Expect data */ 1830 if (bufferLength < edge_serial->rxBytesRemaining) { 1831 rxLen = bufferLength; 1832 /* Expect data to start next buffer */ 1833 edge_serial->rxState = EXPECT_DATA; 1834 } else { 1835 /* BufLen >= RxBytesRemaining */ 1836 rxLen = edge_serial->rxBytesRemaining; 1837 /* Start another header next time */ 1838 edge_serial->rxState = EXPECT_HDR1; 1839 } 1840 1841 bufferLength -= rxLen; 1842 edge_serial->rxBytesRemaining -= rxLen; 1843 1844 /* spit this data back into the tty driver if this 1845 port is open */ 1846 if (rxLen) { 1847 port = edge_serial->serial->port[ 1848 edge_serial->rxPort]; 1849 edge_port = usb_get_serial_port_data(port); 1850 if (edge_port->open) { 1851 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1852 __func__, rxLen, 1853 edge_serial->rxPort); 1854 edge_tty_recv(edge_port->port, buffer, 1855 rxLen); 1856 edge_port->port->icount.rx += rxLen; 1857 } 1858 buffer += rxLen; 1859 } 1860 break; 1861 1862 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1863 edge_serial->rxHeader3 = *buffer; 1864 ++buffer; 1865 --bufferLength; 1866 1867 /* We have all the header bytes, process the 1868 status now */ 1869 process_rcvd_status(edge_serial, 1870 edge_serial->rxStatusParam, 1871 edge_serial->rxHeader3); 1872 edge_serial->rxState = EXPECT_HDR1; 1873 break; 1874 } 1875 } 1876 } 1877 1878 1879 /***************************************************************************** 1880 * process_rcvd_status 1881 * this function handles the any status messages received on the 1882 * bulk in pipe. 1883 *****************************************************************************/ 1884 static void process_rcvd_status(struct edgeport_serial *edge_serial, 1885 __u8 byte2, __u8 byte3) 1886 { 1887 struct usb_serial_port *port; 1888 struct edgeport_port *edge_port; 1889 struct tty_struct *tty; 1890 struct device *dev; 1891 __u8 code = edge_serial->rxStatusCode; 1892 1893 /* switch the port pointer to the one being currently talked about */ 1894 port = edge_serial->serial->port[edge_serial->rxPort]; 1895 edge_port = usb_get_serial_port_data(port); 1896 if (edge_port == NULL) { 1897 dev_err(&edge_serial->serial->dev->dev, 1898 "%s - edge_port == NULL for port %d\n", 1899 __func__, edge_serial->rxPort); 1900 return; 1901 } 1902 dev = &port->dev; 1903 1904 if (code == IOSP_EXT_STATUS) { 1905 switch (byte2) { 1906 case IOSP_EXT_STATUS_CHASE_RSP: 1907 /* we want to do EXT status regardless of port 1908 * open/closed */ 1909 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1910 __func__, edge_serial->rxPort, byte3); 1911 /* Currently, the only EXT_STATUS is Chase, so process 1912 * here instead of one more call to one more subroutine 1913 * If/when more EXT_STATUS, there'll be more work to do 1914 * Also, we currently clear flag and close the port 1915 * regardless of content of above's Byte3. 1916 * We could choose to do something else when Byte3 says 1917 * Timeout on Chase from Edgeport, like wait longer in 1918 * block_until_chase_response, but for now we don't. 1919 */ 1920 edge_port->chaseResponsePending = false; 1921 wake_up(&edge_port->wait_chase); 1922 return; 1923 1924 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1925 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1926 __func__, edge_serial->rxPort, byte3); 1927 /* Port->RxCheckRsp = true; */ 1928 return; 1929 } 1930 } 1931 1932 if (code == IOSP_STATUS_OPEN_RSP) { 1933 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1934 edge_port->maxTxCredits = edge_port->txCredits; 1935 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1936 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1937 handle_new_msr(edge_port, byte2); 1938 1939 /* send the current line settings to the port so we are 1940 in sync with any further termios calls */ 1941 tty = tty_port_tty_get(&edge_port->port->port); 1942 if (tty) { 1943 change_port_settings(tty, 1944 edge_port, &tty->termios); 1945 tty_kref_put(tty); 1946 } 1947 1948 /* we have completed the open */ 1949 edge_port->openPending = false; 1950 edge_port->open = true; 1951 wake_up(&edge_port->wait_open); 1952 return; 1953 } 1954 1955 /* If port is closed, silently discard all rcvd status. We can 1956 * have cases where buffered status is received AFTER the close 1957 * port command is sent to the Edgeport. 1958 */ 1959 if (!edge_port->open || edge_port->closePending) 1960 return; 1961 1962 switch (code) { 1963 /* Not currently sent by Edgeport */ 1964 case IOSP_STATUS_LSR: 1965 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1966 __func__, edge_serial->rxPort, byte2); 1967 handle_new_lsr(edge_port, false, byte2, 0); 1968 break; 1969 1970 case IOSP_STATUS_LSR_DATA: 1971 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1972 __func__, edge_serial->rxPort, byte2, byte3); 1973 /* byte2 is LSR Register */ 1974 /* byte3 is broken data byte */ 1975 handle_new_lsr(edge_port, true, byte2, byte3); 1976 break; 1977 /* 1978 * case IOSP_EXT_4_STATUS: 1979 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1980 * __func__, edge_serial->rxPort, byte2, byte3); 1981 * break; 1982 */ 1983 case IOSP_STATUS_MSR: 1984 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1985 __func__, edge_serial->rxPort, byte2); 1986 /* 1987 * Process this new modem status and generate appropriate 1988 * events, etc, based on the new status. This routine 1989 * also saves the MSR in Port->ShadowMsr. 1990 */ 1991 handle_new_msr(edge_port, byte2); 1992 break; 1993 1994 default: 1995 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1996 break; 1997 } 1998 } 1999 2000 2001 /***************************************************************************** 2002 * edge_tty_recv 2003 * this function passes data on to the tty flip buffer 2004 *****************************************************************************/ 2005 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 2006 int length) 2007 { 2008 int cnt; 2009 2010 cnt = tty_insert_flip_string(&port->port, data, length); 2011 if (cnt < length) { 2012 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 2013 __func__, length - cnt); 2014 } 2015 data += cnt; 2016 length -= cnt; 2017 2018 tty_flip_buffer_push(&port->port); 2019 } 2020 2021 2022 /***************************************************************************** 2023 * handle_new_msr 2024 * this function handles any change to the msr register for a port. 2025 *****************************************************************************/ 2026 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 2027 { 2028 struct async_icount *icount; 2029 2030 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 2031 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 2032 icount = &edge_port->port->icount; 2033 2034 /* update input line counters */ 2035 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 2036 icount->cts++; 2037 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 2038 icount->dsr++; 2039 if (newMsr & EDGEPORT_MSR_DELTA_CD) 2040 icount->dcd++; 2041 if (newMsr & EDGEPORT_MSR_DELTA_RI) 2042 icount->rng++; 2043 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 2044 } 2045 2046 /* Save the new modem status */ 2047 edge_port->shadowMSR = newMsr & 0xf0; 2048 } 2049 2050 2051 /***************************************************************************** 2052 * handle_new_lsr 2053 * this function handles any change to the lsr register for a port. 2054 *****************************************************************************/ 2055 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 2056 __u8 lsr, __u8 data) 2057 { 2058 __u8 newLsr = (__u8) (lsr & (__u8) 2059 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 2060 struct async_icount *icount; 2061 2062 edge_port->shadowLSR = lsr; 2063 2064 if (newLsr & LSR_BREAK) { 2065 /* 2066 * Parity and Framing errors only count if they 2067 * occur exclusive of a break being 2068 * received. 2069 */ 2070 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 2071 } 2072 2073 /* Place LSR data byte into Rx buffer */ 2074 if (lsrData) 2075 edge_tty_recv(edge_port->port, &data, 1); 2076 2077 /* update input line counters */ 2078 icount = &edge_port->port->icount; 2079 if (newLsr & LSR_BREAK) 2080 icount->brk++; 2081 if (newLsr & LSR_OVER_ERR) 2082 icount->overrun++; 2083 if (newLsr & LSR_PAR_ERR) 2084 icount->parity++; 2085 if (newLsr & LSR_FRM_ERR) 2086 icount->frame++; 2087 } 2088 2089 2090 /**************************************************************************** 2091 * sram_write 2092 * writes a number of bytes to the Edgeport device's sram starting at the 2093 * given address. 2094 * If successful returns the number of bytes written, otherwise it returns 2095 * a negative error number of the problem. 2096 ****************************************************************************/ 2097 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2098 __u16 length, const __u8 *data) 2099 { 2100 int result; 2101 __u16 current_length; 2102 unsigned char *transfer_buffer; 2103 2104 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 2105 2106 transfer_buffer = kmalloc(64, GFP_KERNEL); 2107 if (!transfer_buffer) 2108 return -ENOMEM; 2109 2110 /* need to split these writes up into 64 byte chunks */ 2111 result = 0; 2112 while (length > 0) { 2113 if (length > 64) 2114 current_length = 64; 2115 else 2116 current_length = length; 2117 2118 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 2119 memcpy(transfer_buffer, data, current_length); 2120 result = usb_control_msg(serial->dev, 2121 usb_sndctrlpipe(serial->dev, 0), 2122 USB_REQUEST_ION_WRITE_RAM, 2123 0x40, addr, extAddr, transfer_buffer, 2124 current_length, 300); 2125 if (result < 0) 2126 break; 2127 length -= current_length; 2128 addr += current_length; 2129 data += current_length; 2130 } 2131 2132 kfree(transfer_buffer); 2133 return result; 2134 } 2135 2136 2137 /**************************************************************************** 2138 * rom_write 2139 * writes a number of bytes to the Edgeport device's ROM starting at the 2140 * given address. 2141 * If successful returns the number of bytes written, otherwise it returns 2142 * a negative error number of the problem. 2143 ****************************************************************************/ 2144 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2145 __u16 length, const __u8 *data) 2146 { 2147 int result; 2148 __u16 current_length; 2149 unsigned char *transfer_buffer; 2150 2151 transfer_buffer = kmalloc(64, GFP_KERNEL); 2152 if (!transfer_buffer) 2153 return -ENOMEM; 2154 2155 /* need to split these writes up into 64 byte chunks */ 2156 result = 0; 2157 while (length > 0) { 2158 if (length > 64) 2159 current_length = 64; 2160 else 2161 current_length = length; 2162 memcpy(transfer_buffer, data, current_length); 2163 result = usb_control_msg(serial->dev, 2164 usb_sndctrlpipe(serial->dev, 0), 2165 USB_REQUEST_ION_WRITE_ROM, 0x40, 2166 addr, extAddr, 2167 transfer_buffer, current_length, 300); 2168 if (result < 0) 2169 break; 2170 length -= current_length; 2171 addr += current_length; 2172 data += current_length; 2173 } 2174 2175 kfree(transfer_buffer); 2176 return result; 2177 } 2178 2179 2180 /**************************************************************************** 2181 * rom_read 2182 * reads a number of bytes from the Edgeport device starting at the given 2183 * address. 2184 * Returns zero on success or a negative error number. 2185 ****************************************************************************/ 2186 static int rom_read(struct usb_serial *serial, __u16 extAddr, 2187 __u16 addr, __u16 length, __u8 *data) 2188 { 2189 int result; 2190 __u16 current_length; 2191 unsigned char *transfer_buffer; 2192 2193 transfer_buffer = kmalloc(64, GFP_KERNEL); 2194 if (!transfer_buffer) 2195 return -ENOMEM; 2196 2197 /* need to split these reads up into 64 byte chunks */ 2198 result = 0; 2199 while (length > 0) { 2200 if (length > 64) 2201 current_length = 64; 2202 else 2203 current_length = length; 2204 result = usb_control_msg(serial->dev, 2205 usb_rcvctrlpipe(serial->dev, 0), 2206 USB_REQUEST_ION_READ_ROM, 2207 0xC0, addr, extAddr, transfer_buffer, 2208 current_length, 300); 2209 if (result < current_length) { 2210 if (result >= 0) 2211 result = -EIO; 2212 break; 2213 } 2214 memcpy(data, transfer_buffer, current_length); 2215 length -= current_length; 2216 addr += current_length; 2217 data += current_length; 2218 2219 result = 0; 2220 } 2221 2222 kfree(transfer_buffer); 2223 return result; 2224 } 2225 2226 2227 /**************************************************************************** 2228 * send_iosp_ext_cmd 2229 * Is used to send a IOSP message to the Edgeport device 2230 ****************************************************************************/ 2231 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2232 __u8 command, __u8 param) 2233 { 2234 unsigned char *buffer; 2235 unsigned char *currentCommand; 2236 int length = 0; 2237 int status = 0; 2238 2239 buffer = kmalloc(10, GFP_ATOMIC); 2240 if (!buffer) 2241 return -ENOMEM; 2242 2243 currentCommand = buffer; 2244 2245 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2246 command, param); 2247 2248 status = write_cmd_usb(edge_port, buffer, length); 2249 if (status) { 2250 /* something bad happened, let's free up the memory */ 2251 kfree(buffer); 2252 } 2253 2254 return status; 2255 } 2256 2257 2258 /***************************************************************************** 2259 * write_cmd_usb 2260 * this function writes the given buffer out to the bulk write endpoint. 2261 *****************************************************************************/ 2262 static int write_cmd_usb(struct edgeport_port *edge_port, 2263 unsigned char *buffer, int length) 2264 { 2265 struct edgeport_serial *edge_serial = 2266 usb_get_serial_data(edge_port->port->serial); 2267 struct device *dev = &edge_port->port->dev; 2268 int status = 0; 2269 struct urb *urb; 2270 2271 usb_serial_debug_data(dev, __func__, length, buffer); 2272 2273 /* Allocate our next urb */ 2274 urb = usb_alloc_urb(0, GFP_ATOMIC); 2275 if (!urb) 2276 return -ENOMEM; 2277 2278 atomic_inc(&CmdUrbs); 2279 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2280 __func__, urb, atomic_read(&CmdUrbs)); 2281 2282 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2283 usb_sndbulkpipe(edge_serial->serial->dev, 2284 edge_serial->bulk_out_endpoint), 2285 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2286 2287 edge_port->commandPending = true; 2288 status = usb_submit_urb(urb, GFP_ATOMIC); 2289 2290 if (status) { 2291 /* something went wrong */ 2292 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2293 __func__, status); 2294 usb_kill_urb(urb); 2295 usb_free_urb(urb); 2296 atomic_dec(&CmdUrbs); 2297 return status; 2298 } 2299 2300 #if 0 2301 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2302 2303 if (edge_port->commandPending) { 2304 /* command timed out */ 2305 dev_dbg(dev, "%s - command timed out\n", __func__); 2306 status = -EINVAL; 2307 } 2308 #endif 2309 return status; 2310 } 2311 2312 2313 /***************************************************************************** 2314 * send_cmd_write_baud_rate 2315 * this function sends the proper command to change the baud rate of the 2316 * specified port. 2317 *****************************************************************************/ 2318 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2319 int baudRate) 2320 { 2321 struct edgeport_serial *edge_serial = 2322 usb_get_serial_data(edge_port->port->serial); 2323 struct device *dev = &edge_port->port->dev; 2324 unsigned char *cmdBuffer; 2325 unsigned char *currCmd; 2326 int cmdLen = 0; 2327 int divisor; 2328 int status; 2329 u32 number = edge_port->port->port_number; 2330 2331 if (edge_serial->is_epic && 2332 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2333 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2334 baudRate); 2335 return 0; 2336 } 2337 2338 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2339 2340 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2341 if (status) { 2342 dev_err(dev, "%s - bad baud rate\n", __func__); 2343 return status; 2344 } 2345 2346 /* Alloc memory for the string of commands. */ 2347 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2348 if (!cmdBuffer) 2349 return -ENOMEM; 2350 2351 currCmd = cmdBuffer; 2352 2353 /* Enable access to divisor latch */ 2354 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2355 2356 /* Write the divisor itself */ 2357 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2358 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2359 2360 /* Restore original value to disable access to divisor latch */ 2361 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2362 edge_port->shadowLCR); 2363 2364 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2365 if (status) { 2366 /* something bad happened, let's free up the memory */ 2367 kfree(cmdBuffer); 2368 } 2369 2370 return status; 2371 } 2372 2373 2374 /***************************************************************************** 2375 * calc_baud_rate_divisor 2376 * this function calculates the proper baud rate divisor for the specified 2377 * baud rate. 2378 *****************************************************************************/ 2379 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2380 { 2381 int i; 2382 __u16 custom; 2383 2384 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2385 if (divisor_table[i].BaudRate == baudrate) { 2386 *divisor = divisor_table[i].Divisor; 2387 return 0; 2388 } 2389 } 2390 2391 /* We have tried all of the standard baud rates 2392 * lets try to calculate the divisor for this baud rate 2393 * Make sure the baud rate is reasonable */ 2394 if (baudrate > 50 && baudrate < 230400) { 2395 /* get divisor */ 2396 custom = (__u16)((230400L + baudrate/2) / baudrate); 2397 2398 *divisor = custom; 2399 2400 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2401 return 0; 2402 } 2403 2404 return -1; 2405 } 2406 2407 2408 /***************************************************************************** 2409 * send_cmd_write_uart_register 2410 * this function builds up a uart register message and sends to the device. 2411 *****************************************************************************/ 2412 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2413 __u8 regNum, __u8 regValue) 2414 { 2415 struct edgeport_serial *edge_serial = 2416 usb_get_serial_data(edge_port->port->serial); 2417 struct device *dev = &edge_port->port->dev; 2418 unsigned char *cmdBuffer; 2419 unsigned char *currCmd; 2420 unsigned long cmdLen = 0; 2421 int status; 2422 2423 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2424 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2425 2426 if (edge_serial->is_epic && 2427 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2428 regNum == MCR) { 2429 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2430 return 0; 2431 } 2432 2433 if (edge_serial->is_epic && 2434 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2435 regNum == LCR) { 2436 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2437 return 0; 2438 } 2439 2440 /* Alloc memory for the string of commands. */ 2441 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2442 if (cmdBuffer == NULL) 2443 return -ENOMEM; 2444 2445 currCmd = cmdBuffer; 2446 2447 /* Build a cmd in the buffer to write the given register */ 2448 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2449 regNum, regValue); 2450 2451 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2452 if (status) { 2453 /* something bad happened, let's free up the memory */ 2454 kfree(cmdBuffer); 2455 } 2456 2457 return status; 2458 } 2459 2460 2461 /***************************************************************************** 2462 * change_port_settings 2463 * This routine is called to set the UART on the device to match the 2464 * specified new settings. 2465 *****************************************************************************/ 2466 2467 static void change_port_settings(struct tty_struct *tty, 2468 struct edgeport_port *edge_port, struct ktermios *old_termios) 2469 { 2470 struct device *dev = &edge_port->port->dev; 2471 struct edgeport_serial *edge_serial = 2472 usb_get_serial_data(edge_port->port->serial); 2473 int baud; 2474 unsigned cflag; 2475 __u8 mask = 0xff; 2476 __u8 lData; 2477 __u8 lParity; 2478 __u8 lStop; 2479 __u8 rxFlow; 2480 __u8 txFlow; 2481 int status; 2482 2483 if (!edge_port->open && 2484 !edge_port->openPending) { 2485 dev_dbg(dev, "%s - port not opened\n", __func__); 2486 return; 2487 } 2488 2489 cflag = tty->termios.c_cflag; 2490 2491 switch (cflag & CSIZE) { 2492 case CS5: 2493 lData = LCR_BITS_5; mask = 0x1f; 2494 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2495 break; 2496 case CS6: 2497 lData = LCR_BITS_6; mask = 0x3f; 2498 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2499 break; 2500 case CS7: 2501 lData = LCR_BITS_7; mask = 0x7f; 2502 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2503 break; 2504 default: 2505 case CS8: 2506 lData = LCR_BITS_8; 2507 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2508 break; 2509 } 2510 2511 lParity = LCR_PAR_NONE; 2512 if (cflag & PARENB) { 2513 if (cflag & CMSPAR) { 2514 if (cflag & PARODD) { 2515 lParity = LCR_PAR_MARK; 2516 dev_dbg(dev, "%s - parity = mark\n", __func__); 2517 } else { 2518 lParity = LCR_PAR_SPACE; 2519 dev_dbg(dev, "%s - parity = space\n", __func__); 2520 } 2521 } else if (cflag & PARODD) { 2522 lParity = LCR_PAR_ODD; 2523 dev_dbg(dev, "%s - parity = odd\n", __func__); 2524 } else { 2525 lParity = LCR_PAR_EVEN; 2526 dev_dbg(dev, "%s - parity = even\n", __func__); 2527 } 2528 } else { 2529 dev_dbg(dev, "%s - parity = none\n", __func__); 2530 } 2531 2532 if (cflag & CSTOPB) { 2533 lStop = LCR_STOP_2; 2534 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2535 } else { 2536 lStop = LCR_STOP_1; 2537 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2538 } 2539 2540 /* figure out the flow control settings */ 2541 rxFlow = txFlow = 0x00; 2542 if (cflag & CRTSCTS) { 2543 rxFlow |= IOSP_RX_FLOW_RTS; 2544 txFlow |= IOSP_TX_FLOW_CTS; 2545 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2546 } else { 2547 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2548 } 2549 2550 /* if we are implementing XON/XOFF, set the start and stop character 2551 in the device */ 2552 if (I_IXOFF(tty) || I_IXON(tty)) { 2553 unsigned char stop_char = STOP_CHAR(tty); 2554 unsigned char start_char = START_CHAR(tty); 2555 2556 if (!edge_serial->is_epic || 2557 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2558 send_iosp_ext_cmd(edge_port, 2559 IOSP_CMD_SET_XON_CHAR, start_char); 2560 send_iosp_ext_cmd(edge_port, 2561 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2562 } 2563 2564 /* if we are implementing INBOUND XON/XOFF */ 2565 if (I_IXOFF(tty)) { 2566 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2567 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2568 __func__, start_char, stop_char); 2569 } else { 2570 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2571 } 2572 2573 /* if we are implementing OUTBOUND XON/XOFF */ 2574 if (I_IXON(tty)) { 2575 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2576 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2577 __func__, start_char, stop_char); 2578 } else { 2579 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2580 } 2581 } 2582 2583 /* Set flow control to the configured value */ 2584 if (!edge_serial->is_epic || 2585 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2586 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2587 if (!edge_serial->is_epic || 2588 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2589 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2590 2591 2592 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2593 edge_port->shadowLCR |= (lData | lParity | lStop); 2594 2595 edge_port->validDataMask = mask; 2596 2597 /* Send the updated LCR value to the EdgePort */ 2598 status = send_cmd_write_uart_register(edge_port, LCR, 2599 edge_port->shadowLCR); 2600 if (status != 0) 2601 return; 2602 2603 /* set up the MCR register and send it to the EdgePort */ 2604 edge_port->shadowMCR = MCR_MASTER_IE; 2605 if (cflag & CBAUD) 2606 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2607 2608 status = send_cmd_write_uart_register(edge_port, MCR, 2609 edge_port->shadowMCR); 2610 if (status != 0) 2611 return; 2612 2613 /* Determine divisor based on baud rate */ 2614 baud = tty_get_baud_rate(tty); 2615 if (!baud) { 2616 /* pick a default, any default... */ 2617 baud = 9600; 2618 } 2619 2620 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2621 status = send_cmd_write_baud_rate(edge_port, baud); 2622 if (status == -1) { 2623 /* Speed change was not possible - put back the old speed */ 2624 baud = tty_termios_baud_rate(old_termios); 2625 tty_encode_baud_rate(tty, baud, baud); 2626 } 2627 } 2628 2629 2630 /**************************************************************************** 2631 * unicode_to_ascii 2632 * Turns a string from Unicode into ASCII. 2633 * Doesn't do a good job with any characters that are outside the normal 2634 * ASCII range, but it's only for debugging... 2635 * NOTE: expects the unicode in LE format 2636 ****************************************************************************/ 2637 static void unicode_to_ascii(char *string, int buflen, 2638 __le16 *unicode, int unicode_size) 2639 { 2640 int i; 2641 2642 if (buflen <= 0) /* never happens, but... */ 2643 return; 2644 --buflen; /* space for nul */ 2645 2646 for (i = 0; i < unicode_size; i++) { 2647 if (i >= buflen) 2648 break; 2649 string[i] = (char)(le16_to_cpu(unicode[i])); 2650 } 2651 string[i] = 0x00; 2652 } 2653 2654 2655 /**************************************************************************** 2656 * get_manufacturing_desc 2657 * reads in the manufacturing descriptor and stores it into the serial 2658 * structure. 2659 ****************************************************************************/ 2660 static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2661 { 2662 struct device *dev = &edge_serial->serial->dev->dev; 2663 int response; 2664 2665 dev_dbg(dev, "getting manufacturer descriptor\n"); 2666 2667 response = rom_read(edge_serial->serial, 2668 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2669 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2670 EDGE_MANUF_DESC_LEN, 2671 (__u8 *)(&edge_serial->manuf_descriptor)); 2672 2673 if (response < 0) { 2674 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2675 response); 2676 } else { 2677 char string[30]; 2678 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2679 dev_dbg(dev, " RomSize: %dK\n", 2680 edge_serial->manuf_descriptor.RomSize); 2681 dev_dbg(dev, " RamSize: %dK\n", 2682 edge_serial->manuf_descriptor.RamSize); 2683 dev_dbg(dev, " CpuRev: %d\n", 2684 edge_serial->manuf_descriptor.CpuRev); 2685 dev_dbg(dev, " BoardRev: %d\n", 2686 edge_serial->manuf_descriptor.BoardRev); 2687 dev_dbg(dev, " NumPorts: %d\n", 2688 edge_serial->manuf_descriptor.NumPorts); 2689 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2690 edge_serial->manuf_descriptor.DescDate[0], 2691 edge_serial->manuf_descriptor.DescDate[1], 2692 edge_serial->manuf_descriptor.DescDate[2]+1900); 2693 unicode_to_ascii(string, sizeof(string), 2694 edge_serial->manuf_descriptor.SerialNumber, 2695 edge_serial->manuf_descriptor.SerNumLength/2); 2696 dev_dbg(dev, " SerialNumber: %s\n", string); 2697 unicode_to_ascii(string, sizeof(string), 2698 edge_serial->manuf_descriptor.AssemblyNumber, 2699 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2700 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2701 unicode_to_ascii(string, sizeof(string), 2702 edge_serial->manuf_descriptor.OemAssyNumber, 2703 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2704 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2705 dev_dbg(dev, " UartType: %d\n", 2706 edge_serial->manuf_descriptor.UartType); 2707 dev_dbg(dev, " IonPid: %d\n", 2708 edge_serial->manuf_descriptor.IonPid); 2709 dev_dbg(dev, " IonConfig: %d\n", 2710 edge_serial->manuf_descriptor.IonConfig); 2711 } 2712 } 2713 2714 2715 /**************************************************************************** 2716 * get_boot_desc 2717 * reads in the bootloader descriptor and stores it into the serial 2718 * structure. 2719 ****************************************************************************/ 2720 static void get_boot_desc(struct edgeport_serial *edge_serial) 2721 { 2722 struct device *dev = &edge_serial->serial->dev->dev; 2723 int response; 2724 2725 dev_dbg(dev, "getting boot descriptor\n"); 2726 2727 response = rom_read(edge_serial->serial, 2728 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2729 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2730 EDGE_BOOT_DESC_LEN, 2731 (__u8 *)(&edge_serial->boot_descriptor)); 2732 2733 if (response < 0) { 2734 dev_err(dev, "error in getting boot descriptor: %d\n", 2735 response); 2736 } else { 2737 dev_dbg(dev, "**Boot Descriptor:\n"); 2738 dev_dbg(dev, " BootCodeLength: %d\n", 2739 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2740 dev_dbg(dev, " MajorVersion: %d\n", 2741 edge_serial->boot_descriptor.MajorVersion); 2742 dev_dbg(dev, " MinorVersion: %d\n", 2743 edge_serial->boot_descriptor.MinorVersion); 2744 dev_dbg(dev, " BuildNumber: %d\n", 2745 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2746 dev_dbg(dev, " Capabilities: 0x%x\n", 2747 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2748 dev_dbg(dev, " UConfig0: %d\n", 2749 edge_serial->boot_descriptor.UConfig0); 2750 dev_dbg(dev, " UConfig1: %d\n", 2751 edge_serial->boot_descriptor.UConfig1); 2752 } 2753 } 2754 2755 2756 /**************************************************************************** 2757 * load_application_firmware 2758 * This is called to load the application firmware to the device 2759 ****************************************************************************/ 2760 static void load_application_firmware(struct edgeport_serial *edge_serial) 2761 { 2762 struct device *dev = &edge_serial->serial->dev->dev; 2763 const struct ihex_binrec *rec; 2764 const struct firmware *fw; 2765 const char *fw_name; 2766 const char *fw_info; 2767 int response; 2768 __u32 Operaddr; 2769 __u16 build; 2770 2771 switch (edge_serial->product_info.iDownloadFile) { 2772 case EDGE_DOWNLOAD_FILE_I930: 2773 fw_info = "downloading firmware version (930)"; 2774 fw_name = "edgeport/down.fw"; 2775 break; 2776 2777 case EDGE_DOWNLOAD_FILE_80251: 2778 fw_info = "downloading firmware version (80251)"; 2779 fw_name = "edgeport/down2.fw"; 2780 break; 2781 2782 case EDGE_DOWNLOAD_FILE_NONE: 2783 dev_dbg(dev, "No download file specified, skipping download\n"); 2784 return; 2785 2786 default: 2787 return; 2788 } 2789 2790 response = request_ihex_firmware(&fw, fw_name, 2791 &edge_serial->serial->dev->dev); 2792 if (response) { 2793 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2794 fw_name, response); 2795 return; 2796 } 2797 2798 rec = (const struct ihex_binrec *)fw->data; 2799 build = (rec->data[2] << 8) | rec->data[3]; 2800 2801 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2802 2803 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2804 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2805 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2806 2807 for (rec = ihex_next_binrec(rec); rec; 2808 rec = ihex_next_binrec(rec)) { 2809 Operaddr = be32_to_cpu(rec->addr); 2810 response = sram_write(edge_serial->serial, 2811 Operaddr >> 16, 2812 Operaddr & 0xFFFF, 2813 be16_to_cpu(rec->len), 2814 &rec->data[0]); 2815 if (response < 0) { 2816 dev_err(&edge_serial->serial->dev->dev, 2817 "sram_write failed (%x, %x, %d)\n", 2818 Operaddr >> 16, Operaddr & 0xFFFF, 2819 be16_to_cpu(rec->len)); 2820 break; 2821 } 2822 } 2823 2824 dev_dbg(dev, "sending exec_dl_code\n"); 2825 response = usb_control_msg (edge_serial->serial->dev, 2826 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2827 USB_REQUEST_ION_EXEC_DL_CODE, 2828 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2829 2830 release_firmware(fw); 2831 } 2832 2833 2834 /**************************************************************************** 2835 * edge_startup 2836 ****************************************************************************/ 2837 static int edge_startup(struct usb_serial *serial) 2838 { 2839 struct edgeport_serial *edge_serial; 2840 struct usb_device *dev; 2841 struct device *ddev = &serial->dev->dev; 2842 int i; 2843 int response; 2844 bool interrupt_in_found; 2845 bool bulk_in_found; 2846 bool bulk_out_found; 2847 static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2848 EDGE_COMPATIBILITY_MASK1, 2849 EDGE_COMPATIBILITY_MASK2 }; 2850 2851 if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) { 2852 dev_err(&serial->interface->dev, "missing endpoints\n"); 2853 return -ENODEV; 2854 } 2855 2856 dev = serial->dev; 2857 2858 /* create our private serial structure */ 2859 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2860 if (!edge_serial) 2861 return -ENOMEM; 2862 2863 spin_lock_init(&edge_serial->es_lock); 2864 edge_serial->serial = serial; 2865 usb_set_serial_data(serial, edge_serial); 2866 2867 /* get the name for the device from the device */ 2868 i = usb_string(dev, dev->descriptor.iManufacturer, 2869 &edge_serial->name[0], MAX_NAME_LEN+1); 2870 if (i < 0) 2871 i = 0; 2872 edge_serial->name[i++] = ' '; 2873 usb_string(dev, dev->descriptor.iProduct, 2874 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2875 2876 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2877 2878 /* Read the epic descriptor */ 2879 if (get_epic_descriptor(edge_serial) < 0) { 2880 /* memcpy descriptor to Supports structures */ 2881 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2882 sizeof(struct edge_compatibility_bits)); 2883 2884 /* get the manufacturing descriptor for this device */ 2885 get_manufacturing_desc(edge_serial); 2886 2887 /* get the boot descriptor */ 2888 get_boot_desc(edge_serial); 2889 2890 get_product_info(edge_serial); 2891 } 2892 2893 /* set the number of ports from the manufacturing description */ 2894 /* serial->num_ports = serial->product_info.NumPorts; */ 2895 if ((!edge_serial->is_epic) && 2896 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2897 dev_warn(ddev, 2898 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2899 edge_serial->product_info.NumPorts, 2900 serial->num_ports); 2901 } 2902 2903 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2904 2905 /* If not an EPiC device */ 2906 if (!edge_serial->is_epic) { 2907 /* now load the application firmware into this device */ 2908 load_application_firmware(edge_serial); 2909 2910 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2911 2912 /* Check current Edgeport EEPROM and update if necessary */ 2913 update_edgeport_E2PROM(edge_serial); 2914 2915 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2916 2917 /* set the configuration to use #1 */ 2918 /* dev_dbg(ddev, "set_configuration 1\n"); */ 2919 /* usb_set_configuration (dev, 1); */ 2920 } 2921 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2922 edge_serial->product_info.FirmwareMajorVersion, 2923 edge_serial->product_info.FirmwareMinorVersion, 2924 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2925 2926 /* we set up the pointers to the endpoints in the edge_open function, 2927 * as the structures aren't created yet. */ 2928 2929 response = 0; 2930 2931 if (edge_serial->is_epic) { 2932 /* EPIC thing, set up our interrupt polling now and our read 2933 * urb, so that the device knows it really is connected. */ 2934 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2935 for (i = 0; i < serial->interface->altsetting[0] 2936 .desc.bNumEndpoints; ++i) { 2937 struct usb_endpoint_descriptor *endpoint; 2938 int buffer_size; 2939 2940 endpoint = &serial->interface->altsetting[0]. 2941 endpoint[i].desc; 2942 buffer_size = usb_endpoint_maxp(endpoint); 2943 if (!interrupt_in_found && 2944 (usb_endpoint_is_int_in(endpoint))) { 2945 /* we found a interrupt in endpoint */ 2946 dev_dbg(ddev, "found interrupt in\n"); 2947 2948 /* not set up yet, so do it now */ 2949 edge_serial->interrupt_read_urb = 2950 usb_alloc_urb(0, GFP_KERNEL); 2951 if (!edge_serial->interrupt_read_urb) { 2952 response = -ENOMEM; 2953 break; 2954 } 2955 2956 edge_serial->interrupt_in_buffer = 2957 kmalloc(buffer_size, GFP_KERNEL); 2958 if (!edge_serial->interrupt_in_buffer) { 2959 response = -ENOMEM; 2960 break; 2961 } 2962 edge_serial->interrupt_in_endpoint = 2963 endpoint->bEndpointAddress; 2964 2965 /* set up our interrupt urb */ 2966 usb_fill_int_urb( 2967 edge_serial->interrupt_read_urb, 2968 dev, 2969 usb_rcvintpipe(dev, 2970 endpoint->bEndpointAddress), 2971 edge_serial->interrupt_in_buffer, 2972 buffer_size, 2973 edge_interrupt_callback, 2974 edge_serial, 2975 endpoint->bInterval); 2976 2977 interrupt_in_found = true; 2978 } 2979 2980 if (!bulk_in_found && 2981 (usb_endpoint_is_bulk_in(endpoint))) { 2982 /* we found a bulk in endpoint */ 2983 dev_dbg(ddev, "found bulk in\n"); 2984 2985 /* not set up yet, so do it now */ 2986 edge_serial->read_urb = 2987 usb_alloc_urb(0, GFP_KERNEL); 2988 if (!edge_serial->read_urb) { 2989 response = -ENOMEM; 2990 break; 2991 } 2992 2993 edge_serial->bulk_in_buffer = 2994 kmalloc(buffer_size, GFP_KERNEL); 2995 if (!edge_serial->bulk_in_buffer) { 2996 response = -ENOMEM; 2997 break; 2998 } 2999 edge_serial->bulk_in_endpoint = 3000 endpoint->bEndpointAddress; 3001 3002 /* set up our bulk in urb */ 3003 usb_fill_bulk_urb(edge_serial->read_urb, dev, 3004 usb_rcvbulkpipe(dev, 3005 endpoint->bEndpointAddress), 3006 edge_serial->bulk_in_buffer, 3007 usb_endpoint_maxp(endpoint), 3008 edge_bulk_in_callback, 3009 edge_serial); 3010 bulk_in_found = true; 3011 } 3012 3013 if (!bulk_out_found && 3014 (usb_endpoint_is_bulk_out(endpoint))) { 3015 /* we found a bulk out endpoint */ 3016 dev_dbg(ddev, "found bulk out\n"); 3017 edge_serial->bulk_out_endpoint = 3018 endpoint->bEndpointAddress; 3019 bulk_out_found = true; 3020 } 3021 } 3022 3023 if (response || !interrupt_in_found || !bulk_in_found || 3024 !bulk_out_found) { 3025 if (!response) { 3026 dev_err(ddev, "expected endpoints not found\n"); 3027 response = -ENODEV; 3028 } 3029 3030 usb_free_urb(edge_serial->interrupt_read_urb); 3031 kfree(edge_serial->interrupt_in_buffer); 3032 3033 usb_free_urb(edge_serial->read_urb); 3034 kfree(edge_serial->bulk_in_buffer); 3035 3036 kfree(edge_serial); 3037 3038 return response; 3039 } 3040 3041 /* start interrupt read for this edgeport this interrupt will 3042 * continue as long as the edgeport is connected */ 3043 response = usb_submit_urb(edge_serial->interrupt_read_urb, 3044 GFP_KERNEL); 3045 if (response) 3046 dev_err(ddev, "%s - Error %d submitting control urb\n", 3047 __func__, response); 3048 } 3049 return response; 3050 } 3051 3052 3053 /**************************************************************************** 3054 * edge_disconnect 3055 * This function is called whenever the device is removed from the usb bus. 3056 ****************************************************************************/ 3057 static void edge_disconnect(struct usb_serial *serial) 3058 { 3059 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3060 3061 if (edge_serial->is_epic) { 3062 usb_kill_urb(edge_serial->interrupt_read_urb); 3063 usb_kill_urb(edge_serial->read_urb); 3064 } 3065 } 3066 3067 3068 /**************************************************************************** 3069 * edge_release 3070 * This function is called when the device structure is deallocated. 3071 ****************************************************************************/ 3072 static void edge_release(struct usb_serial *serial) 3073 { 3074 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3075 3076 if (edge_serial->is_epic) { 3077 usb_kill_urb(edge_serial->interrupt_read_urb); 3078 usb_free_urb(edge_serial->interrupt_read_urb); 3079 kfree(edge_serial->interrupt_in_buffer); 3080 3081 usb_kill_urb(edge_serial->read_urb); 3082 usb_free_urb(edge_serial->read_urb); 3083 kfree(edge_serial->bulk_in_buffer); 3084 } 3085 3086 kfree(edge_serial); 3087 } 3088 3089 static int edge_port_probe(struct usb_serial_port *port) 3090 { 3091 struct edgeport_port *edge_port; 3092 3093 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 3094 if (!edge_port) 3095 return -ENOMEM; 3096 3097 spin_lock_init(&edge_port->ep_lock); 3098 edge_port->port = port; 3099 3100 usb_set_serial_port_data(port, edge_port); 3101 3102 return 0; 3103 } 3104 3105 static int edge_port_remove(struct usb_serial_port *port) 3106 { 3107 struct edgeport_port *edge_port; 3108 3109 edge_port = usb_get_serial_port_data(port); 3110 kfree(edge_port); 3111 3112 return 0; 3113 } 3114 3115 static struct usb_serial_driver edgeport_2port_device = { 3116 .driver = { 3117 .owner = THIS_MODULE, 3118 .name = "edgeport_2", 3119 }, 3120 .description = "Edgeport 2 port adapter", 3121 .id_table = edgeport_2port_id_table, 3122 .num_ports = 2, 3123 .open = edge_open, 3124 .close = edge_close, 3125 .throttle = edge_throttle, 3126 .unthrottle = edge_unthrottle, 3127 .attach = edge_startup, 3128 .disconnect = edge_disconnect, 3129 .release = edge_release, 3130 .port_probe = edge_port_probe, 3131 .port_remove = edge_port_remove, 3132 .ioctl = edge_ioctl, 3133 .set_termios = edge_set_termios, 3134 .tiocmget = edge_tiocmget, 3135 .tiocmset = edge_tiocmset, 3136 .tiocmiwait = usb_serial_generic_tiocmiwait, 3137 .get_icount = usb_serial_generic_get_icount, 3138 .write = edge_write, 3139 .write_room = edge_write_room, 3140 .chars_in_buffer = edge_chars_in_buffer, 3141 .break_ctl = edge_break, 3142 .read_int_callback = edge_interrupt_callback, 3143 .read_bulk_callback = edge_bulk_in_callback, 3144 .write_bulk_callback = edge_bulk_out_data_callback, 3145 }; 3146 3147 static struct usb_serial_driver edgeport_4port_device = { 3148 .driver = { 3149 .owner = THIS_MODULE, 3150 .name = "edgeport_4", 3151 }, 3152 .description = "Edgeport 4 port adapter", 3153 .id_table = edgeport_4port_id_table, 3154 .num_ports = 4, 3155 .open = edge_open, 3156 .close = edge_close, 3157 .throttle = edge_throttle, 3158 .unthrottle = edge_unthrottle, 3159 .attach = edge_startup, 3160 .disconnect = edge_disconnect, 3161 .release = edge_release, 3162 .port_probe = edge_port_probe, 3163 .port_remove = edge_port_remove, 3164 .ioctl = edge_ioctl, 3165 .set_termios = edge_set_termios, 3166 .tiocmget = edge_tiocmget, 3167 .tiocmset = edge_tiocmset, 3168 .tiocmiwait = usb_serial_generic_tiocmiwait, 3169 .get_icount = usb_serial_generic_get_icount, 3170 .write = edge_write, 3171 .write_room = edge_write_room, 3172 .chars_in_buffer = edge_chars_in_buffer, 3173 .break_ctl = edge_break, 3174 .read_int_callback = edge_interrupt_callback, 3175 .read_bulk_callback = edge_bulk_in_callback, 3176 .write_bulk_callback = edge_bulk_out_data_callback, 3177 }; 3178 3179 static struct usb_serial_driver edgeport_8port_device = { 3180 .driver = { 3181 .owner = THIS_MODULE, 3182 .name = "edgeport_8", 3183 }, 3184 .description = "Edgeport 8 port adapter", 3185 .id_table = edgeport_8port_id_table, 3186 .num_ports = 8, 3187 .open = edge_open, 3188 .close = edge_close, 3189 .throttle = edge_throttle, 3190 .unthrottle = edge_unthrottle, 3191 .attach = edge_startup, 3192 .disconnect = edge_disconnect, 3193 .release = edge_release, 3194 .port_probe = edge_port_probe, 3195 .port_remove = edge_port_remove, 3196 .ioctl = edge_ioctl, 3197 .set_termios = edge_set_termios, 3198 .tiocmget = edge_tiocmget, 3199 .tiocmset = edge_tiocmset, 3200 .tiocmiwait = usb_serial_generic_tiocmiwait, 3201 .get_icount = usb_serial_generic_get_icount, 3202 .write = edge_write, 3203 .write_room = edge_write_room, 3204 .chars_in_buffer = edge_chars_in_buffer, 3205 .break_ctl = edge_break, 3206 .read_int_callback = edge_interrupt_callback, 3207 .read_bulk_callback = edge_bulk_in_callback, 3208 .write_bulk_callback = edge_bulk_out_data_callback, 3209 }; 3210 3211 static struct usb_serial_driver epic_device = { 3212 .driver = { 3213 .owner = THIS_MODULE, 3214 .name = "epic", 3215 }, 3216 .description = "EPiC device", 3217 .id_table = Epic_port_id_table, 3218 .num_ports = 1, 3219 .open = edge_open, 3220 .close = edge_close, 3221 .throttle = edge_throttle, 3222 .unthrottle = edge_unthrottle, 3223 .attach = edge_startup, 3224 .disconnect = edge_disconnect, 3225 .release = edge_release, 3226 .port_probe = edge_port_probe, 3227 .port_remove = edge_port_remove, 3228 .ioctl = edge_ioctl, 3229 .set_termios = edge_set_termios, 3230 .tiocmget = edge_tiocmget, 3231 .tiocmset = edge_tiocmset, 3232 .tiocmiwait = usb_serial_generic_tiocmiwait, 3233 .get_icount = usb_serial_generic_get_icount, 3234 .write = edge_write, 3235 .write_room = edge_write_room, 3236 .chars_in_buffer = edge_chars_in_buffer, 3237 .break_ctl = edge_break, 3238 .read_int_callback = edge_interrupt_callback, 3239 .read_bulk_callback = edge_bulk_in_callback, 3240 .write_bulk_callback = edge_bulk_out_data_callback, 3241 }; 3242 3243 static struct usb_serial_driver * const serial_drivers[] = { 3244 &edgeport_2port_device, &edgeport_4port_device, 3245 &edgeport_8port_device, &epic_device, NULL 3246 }; 3247 3248 module_usb_serial_driver(serial_drivers, id_table_combined); 3249 3250 MODULE_AUTHOR(DRIVER_AUTHOR); 3251 MODULE_DESCRIPTION(DRIVER_DESC); 3252 MODULE_LICENSE("GPL"); 3253 MODULE_FIRMWARE("edgeport/boot.fw"); 3254 MODULE_FIRMWARE("edgeport/boot2.fw"); 3255 MODULE_FIRMWARE("edgeport/down.fw"); 3256 MODULE_FIRMWARE("edgeport/down2.fw"); 3257