1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Edgeport USB Serial Converter driver 4 * 5 * Copyright (C) 2000 Inside Out Networks, All rights reserved. 6 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> 7 * 8 * Supports the following devices: 9 * Edgeport/4 10 * Edgeport/4t 11 * Edgeport/2 12 * Edgeport/4i 13 * Edgeport/2i 14 * Edgeport/421 15 * Edgeport/21 16 * Rapidport/4 17 * Edgeport/8 18 * Edgeport/2D8 19 * Edgeport/4D8 20 * Edgeport/8i 21 * 22 * For questions or problems with this driver, contact Inside Out 23 * Networks technical support, or Peter Berger <pberger@brimson.com>, 24 * or Al Borchers <alborchers@steinerpoint.com>. 25 * 26 */ 27 28 #include <linux/kernel.h> 29 #include <linux/jiffies.h> 30 #include <linux/errno.h> 31 #include <linux/slab.h> 32 #include <linux/tty.h> 33 #include <linux/tty_driver.h> 34 #include <linux/tty_flip.h> 35 #include <linux/module.h> 36 #include <linux/spinlock.h> 37 #include <linux/serial.h> 38 #include <linux/ioctl.h> 39 #include <linux/wait.h> 40 #include <linux/firmware.h> 41 #include <linux/ihex.h> 42 #include <linux/uaccess.h> 43 #include <linux/usb.h> 44 #include <linux/usb/serial.h> 45 #include "io_edgeport.h" 46 #include "io_ionsp.h" /* info for the iosp messages */ 47 #include "io_16654.h" /* 16654 UART defines */ 48 49 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli" 50 #define DRIVER_DESC "Edgeport USB Serial Driver" 51 52 #define MAX_NAME_LEN 64 53 54 #define OPEN_TIMEOUT (5*HZ) /* 5 seconds */ 55 56 static const struct usb_device_id edgeport_2port_id_table[] = { 57 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 58 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 59 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 60 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 61 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 62 { } 63 }; 64 65 static const struct usb_device_id edgeport_4port_id_table[] = { 66 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 67 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 68 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 69 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 70 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 71 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 72 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 73 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 74 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 75 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 76 { } 77 }; 78 79 static const struct usb_device_id edgeport_8port_id_table[] = { 80 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 81 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 82 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 83 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 84 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 85 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 86 { } 87 }; 88 89 static const struct usb_device_id Epic_port_id_table[] = { 90 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 91 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 92 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 93 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 94 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 95 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 96 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 97 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 98 { } 99 }; 100 101 /* Devices that this driver supports */ 102 static const struct usb_device_id id_table_combined[] = { 103 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4) }, 104 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_RAPIDPORT_4) }, 105 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4T) }, 106 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_MT4X56USB) }, 107 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2) }, 108 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4I) }, 109 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2I) }, 110 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_421) }, 111 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_21) }, 112 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU) }, 113 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8) }, 114 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_2_DIN) }, 115 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_4_DIN) }, 116 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU) }, 117 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_22I) }, 118 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_4) }, 119 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_COMPATIBLE) }, 120 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8I) }, 121 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8R) }, 122 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_8RR) }, 123 { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_EDGEPORT_412_8) }, 124 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0202) }, 125 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0203) }, 126 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0310) }, 127 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0311) }, 128 { USB_DEVICE(USB_VENDOR_ID_NCR, NCR_DEVICE_ID_EPIC_0312) }, 129 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A758) }, 130 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A794) }, 131 { USB_DEVICE(USB_VENDOR_ID_AXIOHM, AXIOHM_DEVICE_ID_EPIC_A225) }, 132 { } /* Terminating entry */ 133 }; 134 135 MODULE_DEVICE_TABLE(usb, id_table_combined); 136 137 138 /* receive port state */ 139 enum RXSTATE { 140 EXPECT_HDR1 = 0, /* Expect header byte 1 */ 141 EXPECT_HDR2 = 1, /* Expect header byte 2 */ 142 EXPECT_DATA = 2, /* Expect 'RxBytesRemaining' data */ 143 EXPECT_HDR3 = 3, /* Expect header byte 3 (for status hdrs only) */ 144 }; 145 146 147 /* Transmit Fifo 148 * This Transmit queue is an extension of the edgeport Rx buffer. 149 * The maximum amount of data buffered in both the edgeport 150 * Rx buffer (maxTxCredits) and this buffer will never exceed maxTxCredits. 151 */ 152 struct TxFifo { 153 unsigned int head; /* index to head pointer (write) */ 154 unsigned int tail; /* index to tail pointer (read) */ 155 unsigned int count; /* Bytes in queue */ 156 unsigned int size; /* Max size of queue (equal to Max number of TxCredits) */ 157 unsigned char *fifo; /* allocated Buffer */ 158 }; 159 160 /* This structure holds all of the local port information */ 161 struct edgeport_port { 162 __u16 txCredits; /* our current credits for this port */ 163 __u16 maxTxCredits; /* the max size of the port */ 164 165 struct TxFifo txfifo; /* transmit fifo -- size will be maxTxCredits */ 166 struct urb *write_urb; /* write URB for this port */ 167 bool write_in_progress; /* 'true' while a write URB is outstanding */ 168 spinlock_t ep_lock; 169 170 __u8 shadowLCR; /* last LCR value received */ 171 __u8 shadowMCR; /* last MCR value received */ 172 __u8 shadowMSR; /* last MSR value received */ 173 __u8 shadowLSR; /* last LSR value received */ 174 __u8 shadowXonChar; /* last value set as XON char in Edgeport */ 175 __u8 shadowXoffChar; /* last value set as XOFF char in Edgeport */ 176 __u8 validDataMask; 177 __u32 baudRate; 178 179 bool open; 180 bool openPending; 181 bool commandPending; 182 bool closePending; 183 bool chaseResponsePending; 184 185 wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ 186 wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ 187 wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ 188 189 struct usb_serial_port *port; /* loop back to the owner of this object */ 190 }; 191 192 193 /* This structure holds all of the individual device information */ 194 struct edgeport_serial { 195 char name[MAX_NAME_LEN+2]; /* string name of this device */ 196 197 struct edge_manuf_descriptor manuf_descriptor; /* the manufacturer descriptor */ 198 struct edge_boot_descriptor boot_descriptor; /* the boot firmware descriptor */ 199 struct edgeport_product_info product_info; /* Product Info */ 200 struct edge_compatibility_descriptor epic_descriptor; /* Edgeport compatible descriptor */ 201 int is_epic; /* flag if EPiC device or not */ 202 203 __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ 204 unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ 205 struct urb *interrupt_read_urb; /* our interrupt urb */ 206 207 __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ 208 unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ 209 struct urb *read_urb; /* our bulk read urb */ 210 bool read_in_progress; 211 spinlock_t es_lock; 212 213 __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ 214 215 __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ 216 217 enum RXSTATE rxState; /* the current state of the bulk receive processor */ 218 __u8 rxHeader1; /* receive header byte 1 */ 219 __u8 rxHeader2; /* receive header byte 2 */ 220 __u8 rxHeader3; /* receive header byte 3 */ 221 __u8 rxPort; /* the port that we are currently receiving data for */ 222 __u8 rxStatusCode; /* the receive status code */ 223 __u8 rxStatusParam; /* the receive status paramater */ 224 __s16 rxBytesRemaining; /* the number of port bytes left to read */ 225 struct usb_serial *serial; /* loop back to the owner of this object */ 226 }; 227 228 /* baud rate information */ 229 struct divisor_table_entry { 230 __u32 BaudRate; 231 __u16 Divisor; 232 }; 233 234 /* 235 * Define table of divisors for Rev A EdgePort/4 hardware 236 * These assume a 3.6864MHz crystal, the standard /16, and 237 * MCR.7 = 0. 238 */ 239 240 static const struct divisor_table_entry divisor_table[] = { 241 { 50, 4608}, 242 { 75, 3072}, 243 { 110, 2095}, /* 2094.545455 => 230450 => .0217 % over */ 244 { 134, 1713}, /* 1713.011152 => 230398.5 => .00065% under */ 245 { 150, 1536}, 246 { 300, 768}, 247 { 600, 384}, 248 { 1200, 192}, 249 { 1800, 128}, 250 { 2400, 96}, 251 { 4800, 48}, 252 { 7200, 32}, 253 { 9600, 24}, 254 { 14400, 16}, 255 { 19200, 12}, 256 { 38400, 6}, 257 { 57600, 4}, 258 { 115200, 2}, 259 { 230400, 1}, 260 }; 261 262 /* Number of outstanding Command Write Urbs */ 263 static atomic_t CmdUrbs = ATOMIC_INIT(0); 264 265 266 /* local function prototypes */ 267 268 /* function prototypes for all URB callbacks */ 269 static void edge_interrupt_callback(struct urb *urb); 270 static void edge_bulk_in_callback(struct urb *urb); 271 static void edge_bulk_out_data_callback(struct urb *urb); 272 static void edge_bulk_out_cmd_callback(struct urb *urb); 273 274 /* function prototypes for the usbserial callbacks */ 275 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port); 276 static void edge_close(struct usb_serial_port *port); 277 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 278 const unsigned char *buf, int count); 279 static int edge_write_room(struct tty_struct *tty); 280 static int edge_chars_in_buffer(struct tty_struct *tty); 281 static void edge_throttle(struct tty_struct *tty); 282 static void edge_unthrottle(struct tty_struct *tty); 283 static void edge_set_termios(struct tty_struct *tty, 284 struct usb_serial_port *port, 285 struct ktermios *old_termios); 286 static int edge_ioctl(struct tty_struct *tty, 287 unsigned int cmd, unsigned long arg); 288 static void edge_break(struct tty_struct *tty, int break_state); 289 static int edge_tiocmget(struct tty_struct *tty); 290 static int edge_tiocmset(struct tty_struct *tty, 291 unsigned int set, unsigned int clear); 292 static int edge_startup(struct usb_serial *serial); 293 static void edge_disconnect(struct usb_serial *serial); 294 static void edge_release(struct usb_serial *serial); 295 static int edge_port_probe(struct usb_serial_port *port); 296 static int edge_port_remove(struct usb_serial_port *port); 297 298 /* function prototypes for all of our local functions */ 299 300 static void process_rcvd_data(struct edgeport_serial *edge_serial, 301 unsigned char *buffer, __u16 bufferLength); 302 static void process_rcvd_status(struct edgeport_serial *edge_serial, 303 __u8 byte2, __u8 byte3); 304 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 305 int length); 306 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr); 307 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 308 __u8 lsr, __u8 data); 309 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command, 310 __u8 param); 311 static int calc_baud_rate_divisor(struct device *dev, int baud_rate, int *divisor); 312 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 313 int baudRate); 314 static void change_port_settings(struct tty_struct *tty, 315 struct edgeport_port *edge_port, 316 struct ktermios *old_termios); 317 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 318 __u8 regNum, __u8 regValue); 319 static int write_cmd_usb(struct edgeport_port *edge_port, 320 unsigned char *buffer, int writeLength); 321 static void send_more_port_data(struct edgeport_serial *edge_serial, 322 struct edgeport_port *edge_port); 323 324 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 325 __u16 length, const __u8 *data); 326 static int rom_read(struct usb_serial *serial, __u16 extAddr, __u16 addr, 327 __u16 length, __u8 *data); 328 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 329 __u16 length, const __u8 *data); 330 static void get_manufacturing_desc(struct edgeport_serial *edge_serial); 331 static void get_boot_desc(struct edgeport_serial *edge_serial); 332 static void load_application_firmware(struct edgeport_serial *edge_serial); 333 334 static void unicode_to_ascii(char *string, int buflen, 335 __le16 *unicode, int unicode_size); 336 337 338 /* ************************************************************************ */ 339 /* ************************************************************************ */ 340 /* ************************************************************************ */ 341 /* ************************************************************************ */ 342 343 /************************************************************************ 344 * * 345 * update_edgeport_E2PROM() Compare current versions of * 346 * Boot ROM and Manufacture * 347 * Descriptors with versions * 348 * embedded in this driver * 349 * * 350 ************************************************************************/ 351 static void update_edgeport_E2PROM(struct edgeport_serial *edge_serial) 352 { 353 struct device *dev = &edge_serial->serial->dev->dev; 354 __u32 BootCurVer; 355 __u32 BootNewVer; 356 __u8 BootMajorVersion; 357 __u8 BootMinorVersion; 358 __u16 BootBuildNumber; 359 __u32 Bootaddr; 360 const struct ihex_binrec *rec; 361 const struct firmware *fw; 362 const char *fw_name; 363 int response; 364 365 switch (edge_serial->product_info.iDownloadFile) { 366 case EDGE_DOWNLOAD_FILE_I930: 367 fw_name = "edgeport/boot.fw"; 368 break; 369 case EDGE_DOWNLOAD_FILE_80251: 370 fw_name = "edgeport/boot2.fw"; 371 break; 372 default: 373 return; 374 } 375 376 response = request_ihex_firmware(&fw, fw_name, 377 &edge_serial->serial->dev->dev); 378 if (response) { 379 dev_err(dev, "Failed to load image \"%s\" err %d\n", 380 fw_name, response); 381 return; 382 } 383 384 rec = (const struct ihex_binrec *)fw->data; 385 BootMajorVersion = rec->data[0]; 386 BootMinorVersion = rec->data[1]; 387 BootBuildNumber = (rec->data[2] << 8) | rec->data[3]; 388 389 /* Check Boot Image Version */ 390 BootCurVer = (edge_serial->boot_descriptor.MajorVersion << 24) + 391 (edge_serial->boot_descriptor.MinorVersion << 16) + 392 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber); 393 394 BootNewVer = (BootMajorVersion << 24) + 395 (BootMinorVersion << 16) + 396 BootBuildNumber; 397 398 dev_dbg(dev, "Current Boot Image version %d.%d.%d\n", 399 edge_serial->boot_descriptor.MajorVersion, 400 edge_serial->boot_descriptor.MinorVersion, 401 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 402 403 404 if (BootNewVer > BootCurVer) { 405 dev_dbg(dev, "**Update Boot Image from %d.%d.%d to %d.%d.%d\n", 406 edge_serial->boot_descriptor.MajorVersion, 407 edge_serial->boot_descriptor.MinorVersion, 408 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber), 409 BootMajorVersion, BootMinorVersion, BootBuildNumber); 410 411 dev_dbg(dev, "Downloading new Boot Image\n"); 412 413 for (rec = ihex_next_binrec(rec); rec; 414 rec = ihex_next_binrec(rec)) { 415 Bootaddr = be32_to_cpu(rec->addr); 416 response = rom_write(edge_serial->serial, 417 Bootaddr >> 16, 418 Bootaddr & 0xFFFF, 419 be16_to_cpu(rec->len), 420 &rec->data[0]); 421 if (response < 0) { 422 dev_err(&edge_serial->serial->dev->dev, 423 "rom_write failed (%x, %x, %d)\n", 424 Bootaddr >> 16, Bootaddr & 0xFFFF, 425 be16_to_cpu(rec->len)); 426 break; 427 } 428 } 429 } else { 430 dev_dbg(dev, "Boot Image -- already up to date\n"); 431 } 432 release_firmware(fw); 433 } 434 435 #if 0 436 /************************************************************************ 437 * 438 * Get string descriptor from device 439 * 440 ************************************************************************/ 441 static int get_string_desc(struct usb_device *dev, int Id, 442 struct usb_string_descriptor **pRetDesc) 443 { 444 struct usb_string_descriptor StringDesc; 445 struct usb_string_descriptor *pStringDesc; 446 447 dev_dbg(&dev->dev, "%s - USB String ID = %d\n", __func__, Id); 448 449 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, &StringDesc, 450 sizeof(StringDesc))) 451 return 0; 452 453 pStringDesc = kmalloc(StringDesc.bLength, GFP_KERNEL); 454 if (!pStringDesc) 455 return -1; 456 457 if (!usb_get_descriptor(dev, USB_DT_STRING, Id, pStringDesc, 458 StringDesc.bLength)) { 459 kfree(pStringDesc); 460 return -1; 461 } 462 463 *pRetDesc = pStringDesc; 464 return 0; 465 } 466 #endif 467 468 static void dump_product_info(struct edgeport_serial *edge_serial, 469 struct edgeport_product_info *product_info) 470 { 471 struct device *dev = &edge_serial->serial->dev->dev; 472 473 /* Dump Product Info structure */ 474 dev_dbg(dev, "**Product Information:\n"); 475 dev_dbg(dev, " ProductId %x\n", product_info->ProductId); 476 dev_dbg(dev, " NumPorts %d\n", product_info->NumPorts); 477 dev_dbg(dev, " ProdInfoVer %d\n", product_info->ProdInfoVer); 478 dev_dbg(dev, " IsServer %d\n", product_info->IsServer); 479 dev_dbg(dev, " IsRS232 %d\n", product_info->IsRS232); 480 dev_dbg(dev, " IsRS422 %d\n", product_info->IsRS422); 481 dev_dbg(dev, " IsRS485 %d\n", product_info->IsRS485); 482 dev_dbg(dev, " RomSize %d\n", product_info->RomSize); 483 dev_dbg(dev, " RamSize %d\n", product_info->RamSize); 484 dev_dbg(dev, " CpuRev %x\n", product_info->CpuRev); 485 dev_dbg(dev, " BoardRev %x\n", product_info->BoardRev); 486 dev_dbg(dev, " BootMajorVersion %d.%d.%d\n", 487 product_info->BootMajorVersion, 488 product_info->BootMinorVersion, 489 le16_to_cpu(product_info->BootBuildNumber)); 490 dev_dbg(dev, " FirmwareMajorVersion %d.%d.%d\n", 491 product_info->FirmwareMajorVersion, 492 product_info->FirmwareMinorVersion, 493 le16_to_cpu(product_info->FirmwareBuildNumber)); 494 dev_dbg(dev, " ManufactureDescDate %d/%d/%d\n", 495 product_info->ManufactureDescDate[0], 496 product_info->ManufactureDescDate[1], 497 product_info->ManufactureDescDate[2]+1900); 498 dev_dbg(dev, " iDownloadFile 0x%x\n", 499 product_info->iDownloadFile); 500 dev_dbg(dev, " EpicVer %d\n", product_info->EpicVer); 501 } 502 503 static void get_product_info(struct edgeport_serial *edge_serial) 504 { 505 struct edgeport_product_info *product_info = &edge_serial->product_info; 506 507 memset(product_info, 0, sizeof(struct edgeport_product_info)); 508 509 product_info->ProductId = (__u16)(le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) & ~ION_DEVICE_ID_80251_NETCHIP); 510 product_info->NumPorts = edge_serial->manuf_descriptor.NumPorts; 511 product_info->ProdInfoVer = 0; 512 513 product_info->RomSize = edge_serial->manuf_descriptor.RomSize; 514 product_info->RamSize = edge_serial->manuf_descriptor.RamSize; 515 product_info->CpuRev = edge_serial->manuf_descriptor.CpuRev; 516 product_info->BoardRev = edge_serial->manuf_descriptor.BoardRev; 517 518 product_info->BootMajorVersion = 519 edge_serial->boot_descriptor.MajorVersion; 520 product_info->BootMinorVersion = 521 edge_serial->boot_descriptor.MinorVersion; 522 product_info->BootBuildNumber = 523 edge_serial->boot_descriptor.BuildNumber; 524 525 memcpy(product_info->ManufactureDescDate, 526 edge_serial->manuf_descriptor.DescDate, 527 sizeof(edge_serial->manuf_descriptor.DescDate)); 528 529 /* check if this is 2nd generation hardware */ 530 if (le16_to_cpu(edge_serial->serial->dev->descriptor.idProduct) 531 & ION_DEVICE_ID_80251_NETCHIP) 532 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_80251; 533 else 534 product_info->iDownloadFile = EDGE_DOWNLOAD_FILE_I930; 535 536 /* Determine Product type and set appropriate flags */ 537 switch (DEVICE_ID_FROM_USB_PRODUCT_ID(product_info->ProductId)) { 538 case ION_DEVICE_ID_EDGEPORT_COMPATIBLE: 539 case ION_DEVICE_ID_EDGEPORT_4T: 540 case ION_DEVICE_ID_EDGEPORT_4: 541 case ION_DEVICE_ID_EDGEPORT_2: 542 case ION_DEVICE_ID_EDGEPORT_8_DUAL_CPU: 543 case ION_DEVICE_ID_EDGEPORT_8: 544 case ION_DEVICE_ID_EDGEPORT_421: 545 case ION_DEVICE_ID_EDGEPORT_21: 546 case ION_DEVICE_ID_EDGEPORT_2_DIN: 547 case ION_DEVICE_ID_EDGEPORT_4_DIN: 548 case ION_DEVICE_ID_EDGEPORT_16_DUAL_CPU: 549 product_info->IsRS232 = 1; 550 break; 551 552 case ION_DEVICE_ID_EDGEPORT_2I: /* Edgeport/2 RS422/RS485 */ 553 product_info->IsRS422 = 1; 554 product_info->IsRS485 = 1; 555 break; 556 557 case ION_DEVICE_ID_EDGEPORT_8I: /* Edgeport/4 RS422 */ 558 case ION_DEVICE_ID_EDGEPORT_4I: /* Edgeport/4 RS422 */ 559 product_info->IsRS422 = 1; 560 break; 561 } 562 563 dump_product_info(edge_serial, product_info); 564 } 565 566 static int get_epic_descriptor(struct edgeport_serial *ep) 567 { 568 int result; 569 struct usb_serial *serial = ep->serial; 570 struct edgeport_product_info *product_info = &ep->product_info; 571 struct edge_compatibility_descriptor *epic; 572 struct edge_compatibility_bits *bits; 573 struct device *dev = &serial->dev->dev; 574 575 ep->is_epic = 0; 576 577 epic = kmalloc(sizeof(*epic), GFP_KERNEL); 578 if (!epic) 579 return -ENOMEM; 580 581 result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 582 USB_REQUEST_ION_GET_EPIC_DESC, 583 0xC0, 0x00, 0x00, 584 epic, sizeof(*epic), 585 300); 586 if (result == sizeof(*epic)) { 587 ep->is_epic = 1; 588 memcpy(&ep->epic_descriptor, epic, sizeof(*epic)); 589 memset(product_info, 0, sizeof(struct edgeport_product_info)); 590 591 product_info->NumPorts = epic->NumPorts; 592 product_info->ProdInfoVer = 0; 593 product_info->FirmwareMajorVersion = epic->MajorVersion; 594 product_info->FirmwareMinorVersion = epic->MinorVersion; 595 product_info->FirmwareBuildNumber = epic->BuildNumber; 596 product_info->iDownloadFile = epic->iDownloadFile; 597 product_info->EpicVer = epic->EpicVer; 598 product_info->Epic = epic->Supports; 599 product_info->ProductId = ION_DEVICE_ID_EDGEPORT_COMPATIBLE; 600 dump_product_info(ep, product_info); 601 602 bits = &ep->epic_descriptor.Supports; 603 dev_dbg(dev, "**EPIC descriptor:\n"); 604 dev_dbg(dev, " VendEnableSuspend: %s\n", bits->VendEnableSuspend ? "TRUE": "FALSE"); 605 dev_dbg(dev, " IOSPOpen : %s\n", bits->IOSPOpen ? "TRUE": "FALSE"); 606 dev_dbg(dev, " IOSPClose : %s\n", bits->IOSPClose ? "TRUE": "FALSE"); 607 dev_dbg(dev, " IOSPChase : %s\n", bits->IOSPChase ? "TRUE": "FALSE"); 608 dev_dbg(dev, " IOSPSetRxFlow : %s\n", bits->IOSPSetRxFlow ? "TRUE": "FALSE"); 609 dev_dbg(dev, " IOSPSetTxFlow : %s\n", bits->IOSPSetTxFlow ? "TRUE": "FALSE"); 610 dev_dbg(dev, " IOSPSetXChar : %s\n", bits->IOSPSetXChar ? "TRUE": "FALSE"); 611 dev_dbg(dev, " IOSPRxCheck : %s\n", bits->IOSPRxCheck ? "TRUE": "FALSE"); 612 dev_dbg(dev, " IOSPSetClrBreak : %s\n", bits->IOSPSetClrBreak ? "TRUE": "FALSE"); 613 dev_dbg(dev, " IOSPWriteMCR : %s\n", bits->IOSPWriteMCR ? "TRUE": "FALSE"); 614 dev_dbg(dev, " IOSPWriteLCR : %s\n", bits->IOSPWriteLCR ? "TRUE": "FALSE"); 615 dev_dbg(dev, " IOSPSetBaudRate : %s\n", bits->IOSPSetBaudRate ? "TRUE": "FALSE"); 616 dev_dbg(dev, " TrueEdgeport : %s\n", bits->TrueEdgeport ? "TRUE": "FALSE"); 617 618 result = 0; 619 } else if (result >= 0) { 620 dev_warn(&serial->interface->dev, "short epic descriptor received: %d\n", 621 result); 622 result = -EIO; 623 } 624 625 kfree(epic); 626 627 return result; 628 } 629 630 631 /************************************************************************/ 632 /************************************************************************/ 633 /* U S B C A L L B A C K F U N C T I O N S */ 634 /* U S B C A L L B A C K F U N C T I O N S */ 635 /************************************************************************/ 636 /************************************************************************/ 637 638 /***************************************************************************** 639 * edge_interrupt_callback 640 * this is the callback function for when we have received data on the 641 * interrupt endpoint. 642 *****************************************************************************/ 643 static void edge_interrupt_callback(struct urb *urb) 644 { 645 struct edgeport_serial *edge_serial = urb->context; 646 struct device *dev; 647 struct edgeport_port *edge_port; 648 struct usb_serial_port *port; 649 unsigned char *data = urb->transfer_buffer; 650 int length = urb->actual_length; 651 int bytes_avail; 652 int position; 653 int txCredits; 654 int portNumber; 655 int result; 656 int status = urb->status; 657 658 switch (status) { 659 case 0: 660 /* success */ 661 break; 662 case -ECONNRESET: 663 case -ENOENT: 664 case -ESHUTDOWN: 665 /* this urb is terminated, clean up */ 666 dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", __func__, status); 667 return; 668 default: 669 dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); 670 goto exit; 671 } 672 673 dev = &edge_serial->serial->dev->dev; 674 675 /* process this interrupt-read even if there are no ports open */ 676 if (length) { 677 usb_serial_debug_data(dev, __func__, length, data); 678 679 if (length > 1) { 680 bytes_avail = data[0] | (data[1] << 8); 681 if (bytes_avail) { 682 spin_lock(&edge_serial->es_lock); 683 edge_serial->rxBytesAvail += bytes_avail; 684 dev_dbg(dev, 685 "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", 686 __func__, bytes_avail, 687 edge_serial->rxBytesAvail, 688 edge_serial->read_in_progress); 689 690 if (edge_serial->rxBytesAvail > 0 && 691 !edge_serial->read_in_progress) { 692 dev_dbg(dev, "%s - posting a read\n", __func__); 693 edge_serial->read_in_progress = true; 694 695 /* we have pending bytes on the 696 bulk in pipe, send a request */ 697 result = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 698 if (result) { 699 dev_err(dev, 700 "%s - usb_submit_urb(read bulk) failed with result = %d\n", 701 __func__, result); 702 edge_serial->read_in_progress = false; 703 } 704 } 705 spin_unlock(&edge_serial->es_lock); 706 } 707 } 708 /* grab the txcredits for the ports if available */ 709 position = 2; 710 portNumber = 0; 711 while ((position < length) && 712 (portNumber < edge_serial->serial->num_ports)) { 713 txCredits = data[position] | (data[position+1] << 8); 714 if (txCredits) { 715 port = edge_serial->serial->port[portNumber]; 716 edge_port = usb_get_serial_port_data(port); 717 if (edge_port->open) { 718 spin_lock(&edge_port->ep_lock); 719 edge_port->txCredits += txCredits; 720 spin_unlock(&edge_port->ep_lock); 721 dev_dbg(dev, "%s - txcredits for port%d = %d\n", 722 __func__, portNumber, 723 edge_port->txCredits); 724 725 /* tell the tty driver that something 726 has changed */ 727 tty_port_tty_wakeup(&edge_port->port->port); 728 /* Since we have more credit, check 729 if more data can be sent */ 730 send_more_port_data(edge_serial, 731 edge_port); 732 } 733 } 734 position += 2; 735 ++portNumber; 736 } 737 } 738 739 exit: 740 result = usb_submit_urb(urb, GFP_ATOMIC); 741 if (result) 742 dev_err(&urb->dev->dev, 743 "%s - Error %d submitting control urb\n", 744 __func__, result); 745 } 746 747 748 /***************************************************************************** 749 * edge_bulk_in_callback 750 * this is the callback function for when we have received data on the 751 * bulk in endpoint. 752 *****************************************************************************/ 753 static void edge_bulk_in_callback(struct urb *urb) 754 { 755 struct edgeport_serial *edge_serial = urb->context; 756 struct device *dev; 757 unsigned char *data = urb->transfer_buffer; 758 int retval; 759 __u16 raw_data_length; 760 int status = urb->status; 761 762 if (status) { 763 dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", 764 __func__, status); 765 edge_serial->read_in_progress = false; 766 return; 767 } 768 769 if (urb->actual_length == 0) { 770 dev_dbg(&urb->dev->dev, "%s - read bulk callback with no data\n", __func__); 771 edge_serial->read_in_progress = false; 772 return; 773 } 774 775 dev = &edge_serial->serial->dev->dev; 776 raw_data_length = urb->actual_length; 777 778 usb_serial_debug_data(dev, __func__, raw_data_length, data); 779 780 spin_lock(&edge_serial->es_lock); 781 782 /* decrement our rxBytes available by the number that we just got */ 783 edge_serial->rxBytesAvail -= raw_data_length; 784 785 dev_dbg(dev, "%s - Received = %d, rxBytesAvail %d\n", __func__, 786 raw_data_length, edge_serial->rxBytesAvail); 787 788 process_rcvd_data(edge_serial, data, urb->actual_length); 789 790 /* check to see if there's any more data for us to read */ 791 if (edge_serial->rxBytesAvail > 0) { 792 dev_dbg(dev, "%s - posting a read\n", __func__); 793 retval = usb_submit_urb(edge_serial->read_urb, GFP_ATOMIC); 794 if (retval) { 795 dev_err(dev, 796 "%s - usb_submit_urb(read bulk) failed, retval = %d\n", 797 __func__, retval); 798 edge_serial->read_in_progress = false; 799 } 800 } else { 801 edge_serial->read_in_progress = false; 802 } 803 804 spin_unlock(&edge_serial->es_lock); 805 } 806 807 808 /***************************************************************************** 809 * edge_bulk_out_data_callback 810 * this is the callback function for when we have finished sending 811 * serial data on the bulk out endpoint. 812 *****************************************************************************/ 813 static void edge_bulk_out_data_callback(struct urb *urb) 814 { 815 struct edgeport_port *edge_port = urb->context; 816 int status = urb->status; 817 818 if (status) { 819 dev_dbg(&urb->dev->dev, 820 "%s - nonzero write bulk status received: %d\n", 821 __func__, status); 822 } 823 824 if (edge_port->open) 825 tty_port_tty_wakeup(&edge_port->port->port); 826 827 /* Release the Write URB */ 828 edge_port->write_in_progress = false; 829 830 /* Check if more data needs to be sent */ 831 send_more_port_data((struct edgeport_serial *) 832 (usb_get_serial_data(edge_port->port->serial)), edge_port); 833 } 834 835 836 /***************************************************************************** 837 * BulkOutCmdCallback 838 * this is the callback function for when we have finished sending a 839 * command on the bulk out endpoint. 840 *****************************************************************************/ 841 static void edge_bulk_out_cmd_callback(struct urb *urb) 842 { 843 struct edgeport_port *edge_port = urb->context; 844 int status = urb->status; 845 846 atomic_dec(&CmdUrbs); 847 dev_dbg(&urb->dev->dev, "%s - FREE URB %p (outstanding %d)\n", 848 __func__, urb, atomic_read(&CmdUrbs)); 849 850 851 /* clean up the transfer buffer */ 852 kfree(urb->transfer_buffer); 853 854 /* Free the command urb */ 855 usb_free_urb(urb); 856 857 if (status) { 858 dev_dbg(&urb->dev->dev, 859 "%s - nonzero write bulk status received: %d\n", 860 __func__, status); 861 return; 862 } 863 864 /* tell the tty driver that something has changed */ 865 if (edge_port->open) 866 tty_port_tty_wakeup(&edge_port->port->port); 867 868 /* we have completed the command */ 869 edge_port->commandPending = false; 870 wake_up(&edge_port->wait_command); 871 } 872 873 874 /***************************************************************************** 875 * Driver tty interface functions 876 *****************************************************************************/ 877 878 /***************************************************************************** 879 * SerialOpen 880 * this function is called by the tty driver when a port is opened 881 * If successful, we return 0 882 * Otherwise we return a negative error number. 883 *****************************************************************************/ 884 static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) 885 { 886 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 887 struct device *dev = &port->dev; 888 struct usb_serial *serial; 889 struct edgeport_serial *edge_serial; 890 int response; 891 892 if (edge_port == NULL) 893 return -ENODEV; 894 895 /* see if we've set up our endpoint info yet (can't set it up 896 in edge_startup as the structures were not set up at that time.) */ 897 serial = port->serial; 898 edge_serial = usb_get_serial_data(serial); 899 if (edge_serial == NULL) 900 return -ENODEV; 901 if (edge_serial->interrupt_in_buffer == NULL) { 902 struct usb_serial_port *port0 = serial->port[0]; 903 904 /* not set up yet, so do it now */ 905 edge_serial->interrupt_in_buffer = 906 port0->interrupt_in_buffer; 907 edge_serial->interrupt_in_endpoint = 908 port0->interrupt_in_endpointAddress; 909 edge_serial->interrupt_read_urb = port0->interrupt_in_urb; 910 edge_serial->bulk_in_buffer = port0->bulk_in_buffer; 911 edge_serial->bulk_in_endpoint = 912 port0->bulk_in_endpointAddress; 913 edge_serial->read_urb = port0->read_urb; 914 edge_serial->bulk_out_endpoint = 915 port0->bulk_out_endpointAddress; 916 917 /* set up our interrupt urb */ 918 usb_fill_int_urb(edge_serial->interrupt_read_urb, 919 serial->dev, 920 usb_rcvintpipe(serial->dev, 921 port0->interrupt_in_endpointAddress), 922 port0->interrupt_in_buffer, 923 edge_serial->interrupt_read_urb->transfer_buffer_length, 924 edge_interrupt_callback, edge_serial, 925 edge_serial->interrupt_read_urb->interval); 926 927 /* set up our bulk in urb */ 928 usb_fill_bulk_urb(edge_serial->read_urb, serial->dev, 929 usb_rcvbulkpipe(serial->dev, 930 port0->bulk_in_endpointAddress), 931 port0->bulk_in_buffer, 932 edge_serial->read_urb->transfer_buffer_length, 933 edge_bulk_in_callback, edge_serial); 934 edge_serial->read_in_progress = false; 935 936 /* start interrupt read for this edgeport 937 * this interrupt will continue as long 938 * as the edgeport is connected */ 939 response = usb_submit_urb(edge_serial->interrupt_read_urb, 940 GFP_KERNEL); 941 if (response) { 942 dev_err(dev, "%s - Error %d submitting control urb\n", 943 __func__, response); 944 } 945 } 946 947 /* initialize our wait queues */ 948 init_waitqueue_head(&edge_port->wait_open); 949 init_waitqueue_head(&edge_port->wait_chase); 950 init_waitqueue_head(&edge_port->wait_command); 951 952 /* initialize our port settings */ 953 edge_port->txCredits = 0; /* Can't send any data yet */ 954 /* Must always set this bit to enable ints! */ 955 edge_port->shadowMCR = MCR_MASTER_IE; 956 edge_port->chaseResponsePending = false; 957 958 /* send a open port command */ 959 edge_port->openPending = true; 960 edge_port->open = false; 961 response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0); 962 963 if (response < 0) { 964 dev_err(dev, "%s - error sending open port command\n", __func__); 965 edge_port->openPending = false; 966 return -ENODEV; 967 } 968 969 /* now wait for the port to be completely opened */ 970 wait_event_timeout(edge_port->wait_open, !edge_port->openPending, 971 OPEN_TIMEOUT); 972 973 if (!edge_port->open) { 974 /* open timed out */ 975 dev_dbg(dev, "%s - open timedout\n", __func__); 976 edge_port->openPending = false; 977 return -ENODEV; 978 } 979 980 /* create the txfifo */ 981 edge_port->txfifo.head = 0; 982 edge_port->txfifo.tail = 0; 983 edge_port->txfifo.count = 0; 984 edge_port->txfifo.size = edge_port->maxTxCredits; 985 edge_port->txfifo.fifo = kmalloc(edge_port->maxTxCredits, GFP_KERNEL); 986 987 if (!edge_port->txfifo.fifo) { 988 edge_close(port); 989 return -ENOMEM; 990 } 991 992 /* Allocate a URB for the write */ 993 edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL); 994 edge_port->write_in_progress = false; 995 996 if (!edge_port->write_urb) { 997 edge_close(port); 998 return -ENOMEM; 999 } 1000 1001 dev_dbg(dev, "%s - Initialize TX fifo to %d bytes\n", 1002 __func__, edge_port->maxTxCredits); 1003 1004 return 0; 1005 } 1006 1007 1008 /************************************************************************ 1009 * 1010 * block_until_chase_response 1011 * 1012 * This function will block the close until one of the following: 1013 * 1. Response to our Chase comes from Edgeport 1014 * 2. A timeout of 10 seconds without activity has expired 1015 * (1K of Edgeport data @ 2400 baud ==> 4 sec to empty) 1016 * 1017 ************************************************************************/ 1018 static void block_until_chase_response(struct edgeport_port *edge_port) 1019 { 1020 struct device *dev = &edge_port->port->dev; 1021 DEFINE_WAIT(wait); 1022 __u16 lastCredits; 1023 int timeout = 1*HZ; 1024 int loop = 10; 1025 1026 while (1) { 1027 /* Save Last credits */ 1028 lastCredits = edge_port->txCredits; 1029 1030 /* Did we get our Chase response */ 1031 if (!edge_port->chaseResponsePending) { 1032 dev_dbg(dev, "%s - Got Chase Response\n", __func__); 1033 1034 /* did we get all of our credit back? */ 1035 if (edge_port->txCredits == edge_port->maxTxCredits) { 1036 dev_dbg(dev, "%s - Got all credits\n", __func__); 1037 return; 1038 } 1039 } 1040 1041 /* Block the thread for a while */ 1042 prepare_to_wait(&edge_port->wait_chase, &wait, 1043 TASK_UNINTERRUPTIBLE); 1044 schedule_timeout(timeout); 1045 finish_wait(&edge_port->wait_chase, &wait); 1046 1047 if (lastCredits == edge_port->txCredits) { 1048 /* No activity.. count down. */ 1049 loop--; 1050 if (loop == 0) { 1051 edge_port->chaseResponsePending = false; 1052 dev_dbg(dev, "%s - Chase TIMEOUT\n", __func__); 1053 return; 1054 } 1055 } else { 1056 /* Reset timeout value back to 10 seconds */ 1057 dev_dbg(dev, "%s - Last %d, Current %d\n", __func__, 1058 lastCredits, edge_port->txCredits); 1059 loop = 10; 1060 } 1061 } 1062 } 1063 1064 1065 /************************************************************************ 1066 * 1067 * block_until_tx_empty 1068 * 1069 * This function will block the close until one of the following: 1070 * 1. TX count are 0 1071 * 2. The edgeport has stopped 1072 * 3. A timeout of 3 seconds without activity has expired 1073 * 1074 ************************************************************************/ 1075 static void block_until_tx_empty(struct edgeport_port *edge_port) 1076 { 1077 struct device *dev = &edge_port->port->dev; 1078 DEFINE_WAIT(wait); 1079 struct TxFifo *fifo = &edge_port->txfifo; 1080 __u32 lastCount; 1081 int timeout = HZ/10; 1082 int loop = 30; 1083 1084 while (1) { 1085 /* Save Last count */ 1086 lastCount = fifo->count; 1087 1088 /* Is the Edgeport Buffer empty? */ 1089 if (lastCount == 0) { 1090 dev_dbg(dev, "%s - TX Buffer Empty\n", __func__); 1091 return; 1092 } 1093 1094 /* Block the thread for a while */ 1095 prepare_to_wait(&edge_port->wait_chase, &wait, 1096 TASK_UNINTERRUPTIBLE); 1097 schedule_timeout(timeout); 1098 finish_wait(&edge_port->wait_chase, &wait); 1099 1100 dev_dbg(dev, "%s wait\n", __func__); 1101 1102 if (lastCount == fifo->count) { 1103 /* No activity.. count down. */ 1104 loop--; 1105 if (loop == 0) { 1106 dev_dbg(dev, "%s - TIMEOUT\n", __func__); 1107 return; 1108 } 1109 } else { 1110 /* Reset timeout value back to seconds */ 1111 loop = 30; 1112 } 1113 } 1114 } 1115 1116 1117 /***************************************************************************** 1118 * edge_close 1119 * this function is called by the tty driver when a port is closed 1120 *****************************************************************************/ 1121 static void edge_close(struct usb_serial_port *port) 1122 { 1123 struct edgeport_serial *edge_serial; 1124 struct edgeport_port *edge_port; 1125 int status; 1126 1127 edge_serial = usb_get_serial_data(port->serial); 1128 edge_port = usb_get_serial_port_data(port); 1129 if (edge_serial == NULL || edge_port == NULL) 1130 return; 1131 1132 /* block until tx is empty */ 1133 block_until_tx_empty(edge_port); 1134 1135 edge_port->closePending = true; 1136 1137 if (!edge_serial->is_epic || 1138 edge_serial->epic_descriptor.Supports.IOSPChase) { 1139 /* flush and chase */ 1140 edge_port->chaseResponsePending = true; 1141 1142 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1143 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1144 if (status == 0) 1145 /* block until chase finished */ 1146 block_until_chase_response(edge_port); 1147 else 1148 edge_port->chaseResponsePending = false; 1149 } 1150 1151 if (!edge_serial->is_epic || 1152 edge_serial->epic_descriptor.Supports.IOSPClose) { 1153 /* close the port */ 1154 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLOSE_PORT\n", __func__); 1155 send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0); 1156 } 1157 1158 /* port->close = true; */ 1159 edge_port->closePending = false; 1160 edge_port->open = false; 1161 edge_port->openPending = false; 1162 1163 usb_kill_urb(edge_port->write_urb); 1164 1165 if (edge_port->write_urb) { 1166 /* if this urb had a transfer buffer already 1167 (old transfer) free it */ 1168 kfree(edge_port->write_urb->transfer_buffer); 1169 usb_free_urb(edge_port->write_urb); 1170 edge_port->write_urb = NULL; 1171 } 1172 kfree(edge_port->txfifo.fifo); 1173 edge_port->txfifo.fifo = NULL; 1174 } 1175 1176 /***************************************************************************** 1177 * SerialWrite 1178 * this function is called by the tty driver when data should be written 1179 * to the port. 1180 * If successful, we return the number of bytes written, otherwise we 1181 * return a negative error number. 1182 *****************************************************************************/ 1183 static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 1184 const unsigned char *data, int count) 1185 { 1186 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1187 struct TxFifo *fifo; 1188 int copySize; 1189 int bytesleft; 1190 int firsthalf; 1191 int secondhalf; 1192 unsigned long flags; 1193 1194 if (edge_port == NULL) 1195 return -ENODEV; 1196 1197 /* get a pointer to the Tx fifo */ 1198 fifo = &edge_port->txfifo; 1199 1200 spin_lock_irqsave(&edge_port->ep_lock, flags); 1201 1202 /* calculate number of bytes to put in fifo */ 1203 copySize = min((unsigned int)count, 1204 (edge_port->txCredits - fifo->count)); 1205 1206 dev_dbg(&port->dev, "%s of %d byte(s) Fifo room %d -- will copy %d bytes\n", 1207 __func__, count, edge_port->txCredits - fifo->count, copySize); 1208 1209 /* catch writes of 0 bytes which the tty driver likes to give us, 1210 and when txCredits is empty */ 1211 if (copySize == 0) { 1212 dev_dbg(&port->dev, "%s - copySize = Zero\n", __func__); 1213 goto finish_write; 1214 } 1215 1216 /* queue the data 1217 * since we can never overflow the buffer we do not have to check for a 1218 * full condition 1219 * 1220 * the copy is done is two parts -- first fill to the end of the buffer 1221 * then copy the reset from the start of the buffer 1222 */ 1223 bytesleft = fifo->size - fifo->head; 1224 firsthalf = min(bytesleft, copySize); 1225 dev_dbg(&port->dev, "%s - copy %d bytes of %d into fifo \n", __func__, 1226 firsthalf, bytesleft); 1227 1228 /* now copy our data */ 1229 memcpy(&fifo->fifo[fifo->head], data, firsthalf); 1230 usb_serial_debug_data(&port->dev, __func__, firsthalf, &fifo->fifo[fifo->head]); 1231 1232 /* update the index and size */ 1233 fifo->head += firsthalf; 1234 fifo->count += firsthalf; 1235 1236 /* wrap the index */ 1237 if (fifo->head == fifo->size) 1238 fifo->head = 0; 1239 1240 secondhalf = copySize-firsthalf; 1241 1242 if (secondhalf) { 1243 dev_dbg(&port->dev, "%s - copy rest of data %d\n", __func__, secondhalf); 1244 memcpy(&fifo->fifo[fifo->head], &data[firsthalf], secondhalf); 1245 usb_serial_debug_data(&port->dev, __func__, secondhalf, &fifo->fifo[fifo->head]); 1246 /* update the index and size */ 1247 fifo->count += secondhalf; 1248 fifo->head += secondhalf; 1249 /* No need to check for wrap since we can not get to end of 1250 * the fifo in this part 1251 */ 1252 } 1253 1254 finish_write: 1255 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1256 1257 send_more_port_data((struct edgeport_serial *) 1258 usb_get_serial_data(port->serial), edge_port); 1259 1260 dev_dbg(&port->dev, "%s wrote %d byte(s) TxCredits %d, Fifo %d\n", 1261 __func__, copySize, edge_port->txCredits, fifo->count); 1262 1263 return copySize; 1264 } 1265 1266 1267 /************************************************************************ 1268 * 1269 * send_more_port_data() 1270 * 1271 * This routine attempts to write additional UART transmit data 1272 * to a port over the USB bulk pipe. It is called (1) when new 1273 * data has been written to a port's TxBuffer from higher layers 1274 * (2) when the peripheral sends us additional TxCredits indicating 1275 * that it can accept more Tx data for a given port; and (3) when 1276 * a bulk write completes successfully and we want to see if we 1277 * can transmit more. 1278 * 1279 ************************************************************************/ 1280 static void send_more_port_data(struct edgeport_serial *edge_serial, 1281 struct edgeport_port *edge_port) 1282 { 1283 struct TxFifo *fifo = &edge_port->txfifo; 1284 struct device *dev = &edge_port->port->dev; 1285 struct urb *urb; 1286 unsigned char *buffer; 1287 int status; 1288 int count; 1289 int bytesleft; 1290 int firsthalf; 1291 int secondhalf; 1292 unsigned long flags; 1293 1294 spin_lock_irqsave(&edge_port->ep_lock, flags); 1295 1296 if (edge_port->write_in_progress || 1297 !edge_port->open || 1298 (fifo->count == 0)) { 1299 dev_dbg(dev, "%s EXIT - fifo %d, PendingWrite = %d\n", 1300 __func__, fifo->count, edge_port->write_in_progress); 1301 goto exit_send; 1302 } 1303 1304 /* since the amount of data in the fifo will always fit into the 1305 * edgeport buffer we do not need to check the write length 1306 * 1307 * Do we have enough credits for this port to make it worthwhile 1308 * to bother queueing a write. If it's too small, say a few bytes, 1309 * it's better to wait for more credits so we can do a larger write. 1310 */ 1311 if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_BULK_MAX_PACKET_SIZE)) { 1312 dev_dbg(dev, "%s Not enough credit - fifo %d TxCredit %d\n", 1313 __func__, fifo->count, edge_port->txCredits); 1314 goto exit_send; 1315 } 1316 1317 /* lock this write */ 1318 edge_port->write_in_progress = true; 1319 1320 /* get a pointer to the write_urb */ 1321 urb = edge_port->write_urb; 1322 1323 /* make sure transfer buffer is freed */ 1324 kfree(urb->transfer_buffer); 1325 urb->transfer_buffer = NULL; 1326 1327 /* build the data header for the buffer and port that we are about 1328 to send out */ 1329 count = fifo->count; 1330 buffer = kmalloc(count+2, GFP_ATOMIC); 1331 if (!buffer) { 1332 edge_port->write_in_progress = false; 1333 goto exit_send; 1334 } 1335 buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count); 1336 buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count); 1337 1338 /* now copy our data */ 1339 bytesleft = fifo->size - fifo->tail; 1340 firsthalf = min(bytesleft, count); 1341 memcpy(&buffer[2], &fifo->fifo[fifo->tail], firsthalf); 1342 fifo->tail += firsthalf; 1343 fifo->count -= firsthalf; 1344 if (fifo->tail == fifo->size) 1345 fifo->tail = 0; 1346 1347 secondhalf = count-firsthalf; 1348 if (secondhalf) { 1349 memcpy(&buffer[2+firsthalf], &fifo->fifo[fifo->tail], 1350 secondhalf); 1351 fifo->tail += secondhalf; 1352 fifo->count -= secondhalf; 1353 } 1354 1355 if (count) 1356 usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]); 1357 1358 /* fill up the urb with all of our data and submit it */ 1359 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 1360 usb_sndbulkpipe(edge_serial->serial->dev, 1361 edge_serial->bulk_out_endpoint), 1362 buffer, count+2, 1363 edge_bulk_out_data_callback, edge_port); 1364 1365 /* decrement the number of credits we have by the number we just sent */ 1366 edge_port->txCredits -= count; 1367 edge_port->port->icount.tx += count; 1368 1369 status = usb_submit_urb(urb, GFP_ATOMIC); 1370 if (status) { 1371 /* something went wrong */ 1372 dev_err_console(edge_port->port, 1373 "%s - usb_submit_urb(write bulk) failed, status = %d, data lost\n", 1374 __func__, status); 1375 edge_port->write_in_progress = false; 1376 1377 /* revert the credits as something bad happened. */ 1378 edge_port->txCredits += count; 1379 edge_port->port->icount.tx -= count; 1380 } 1381 dev_dbg(dev, "%s wrote %d byte(s) TxCredit %d, Fifo %d\n", 1382 __func__, count, edge_port->txCredits, fifo->count); 1383 1384 exit_send: 1385 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1386 } 1387 1388 1389 /***************************************************************************** 1390 * edge_write_room 1391 * this function is called by the tty driver when it wants to know how 1392 * many bytes of data we can accept for a specific port. If successful, 1393 * we return the amount of room that we have for this port (the txCredits) 1394 * otherwise we return a negative error number. 1395 *****************************************************************************/ 1396 static int edge_write_room(struct tty_struct *tty) 1397 { 1398 struct usb_serial_port *port = tty->driver_data; 1399 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1400 int room; 1401 unsigned long flags; 1402 1403 if (edge_port == NULL) 1404 return 0; 1405 if (edge_port->closePending) 1406 return 0; 1407 1408 if (!edge_port->open) { 1409 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1410 return 0; 1411 } 1412 1413 /* total of both buffers is still txCredit */ 1414 spin_lock_irqsave(&edge_port->ep_lock, flags); 1415 room = edge_port->txCredits - edge_port->txfifo.count; 1416 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1417 1418 dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); 1419 return room; 1420 } 1421 1422 1423 /***************************************************************************** 1424 * edge_chars_in_buffer 1425 * this function is called by the tty driver when it wants to know how 1426 * many bytes of data we currently have outstanding in the port (data that 1427 * has been written, but hasn't made it out the port yet) 1428 * If successful, we return the number of bytes left to be written in the 1429 * system, 1430 * Otherwise we return a negative error number. 1431 *****************************************************************************/ 1432 static int edge_chars_in_buffer(struct tty_struct *tty) 1433 { 1434 struct usb_serial_port *port = tty->driver_data; 1435 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1436 int num_chars; 1437 unsigned long flags; 1438 1439 if (edge_port == NULL) 1440 return 0; 1441 if (edge_port->closePending) 1442 return 0; 1443 1444 if (!edge_port->open) { 1445 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1446 return 0; 1447 } 1448 1449 spin_lock_irqsave(&edge_port->ep_lock, flags); 1450 num_chars = edge_port->maxTxCredits - edge_port->txCredits + 1451 edge_port->txfifo.count; 1452 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1453 if (num_chars) { 1454 dev_dbg(&port->dev, "%s - returns %d\n", __func__, num_chars); 1455 } 1456 1457 return num_chars; 1458 } 1459 1460 1461 /***************************************************************************** 1462 * SerialThrottle 1463 * this function is called by the tty driver when it wants to stop the data 1464 * being read from the port. 1465 *****************************************************************************/ 1466 static void edge_throttle(struct tty_struct *tty) 1467 { 1468 struct usb_serial_port *port = tty->driver_data; 1469 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1470 int status; 1471 1472 if (edge_port == NULL) 1473 return; 1474 1475 if (!edge_port->open) { 1476 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1477 return; 1478 } 1479 1480 /* if we are implementing XON/XOFF, send the stop character */ 1481 if (I_IXOFF(tty)) { 1482 unsigned char stop_char = STOP_CHAR(tty); 1483 status = edge_write(tty, port, &stop_char, 1); 1484 if (status <= 0) 1485 return; 1486 } 1487 1488 /* if we are implementing RTS/CTS, toggle that line */ 1489 if (C_CRTSCTS(tty)) { 1490 edge_port->shadowMCR &= ~MCR_RTS; 1491 status = send_cmd_write_uart_register(edge_port, MCR, 1492 edge_port->shadowMCR); 1493 if (status != 0) 1494 return; 1495 } 1496 } 1497 1498 1499 /***************************************************************************** 1500 * edge_unthrottle 1501 * this function is called by the tty driver when it wants to resume the 1502 * data being read from the port (called after SerialThrottle is called) 1503 *****************************************************************************/ 1504 static void edge_unthrottle(struct tty_struct *tty) 1505 { 1506 struct usb_serial_port *port = tty->driver_data; 1507 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1508 int status; 1509 1510 if (edge_port == NULL) 1511 return; 1512 1513 if (!edge_port->open) { 1514 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1515 return; 1516 } 1517 1518 /* if we are implementing XON/XOFF, send the start character */ 1519 if (I_IXOFF(tty)) { 1520 unsigned char start_char = START_CHAR(tty); 1521 status = edge_write(tty, port, &start_char, 1); 1522 if (status <= 0) 1523 return; 1524 } 1525 /* if we are implementing RTS/CTS, toggle that line */ 1526 if (C_CRTSCTS(tty)) { 1527 edge_port->shadowMCR |= MCR_RTS; 1528 send_cmd_write_uart_register(edge_port, MCR, 1529 edge_port->shadowMCR); 1530 } 1531 } 1532 1533 1534 /***************************************************************************** 1535 * SerialSetTermios 1536 * this function is called by the tty driver when it wants to change 1537 * the termios structure 1538 *****************************************************************************/ 1539 static void edge_set_termios(struct tty_struct *tty, 1540 struct usb_serial_port *port, struct ktermios *old_termios) 1541 { 1542 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1543 1544 if (edge_port == NULL) 1545 return; 1546 1547 if (!edge_port->open) { 1548 dev_dbg(&port->dev, "%s - port not opened\n", __func__); 1549 return; 1550 } 1551 1552 /* change the port settings to the new ones specified */ 1553 change_port_settings(tty, edge_port, old_termios); 1554 } 1555 1556 1557 /***************************************************************************** 1558 * get_lsr_info - get line status register info 1559 * 1560 * Purpose: Let user call ioctl() to get info when the UART physically 1561 * is emptied. On bus types like RS485, the transmitter must 1562 * release the bus after transmitting. This must be done when 1563 * the transmit shift register is empty, not be done when the 1564 * transmit holding register is empty. This functionality 1565 * allows an RS485 driver to be written in user space. 1566 *****************************************************************************/ 1567 static int get_lsr_info(struct edgeport_port *edge_port, 1568 unsigned int __user *value) 1569 { 1570 unsigned int result = 0; 1571 unsigned long flags; 1572 1573 spin_lock_irqsave(&edge_port->ep_lock, flags); 1574 if (edge_port->maxTxCredits == edge_port->txCredits && 1575 edge_port->txfifo.count == 0) { 1576 dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__); 1577 result = TIOCSER_TEMT; 1578 } 1579 spin_unlock_irqrestore(&edge_port->ep_lock, flags); 1580 1581 if (copy_to_user(value, &result, sizeof(int))) 1582 return -EFAULT; 1583 return 0; 1584 } 1585 1586 static int edge_tiocmset(struct tty_struct *tty, 1587 unsigned int set, unsigned int clear) 1588 { 1589 struct usb_serial_port *port = tty->driver_data; 1590 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1591 unsigned int mcr; 1592 1593 mcr = edge_port->shadowMCR; 1594 if (set & TIOCM_RTS) 1595 mcr |= MCR_RTS; 1596 if (set & TIOCM_DTR) 1597 mcr |= MCR_DTR; 1598 if (set & TIOCM_LOOP) 1599 mcr |= MCR_LOOPBACK; 1600 1601 if (clear & TIOCM_RTS) 1602 mcr &= ~MCR_RTS; 1603 if (clear & TIOCM_DTR) 1604 mcr &= ~MCR_DTR; 1605 if (clear & TIOCM_LOOP) 1606 mcr &= ~MCR_LOOPBACK; 1607 1608 edge_port->shadowMCR = mcr; 1609 1610 send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR); 1611 1612 return 0; 1613 } 1614 1615 static int edge_tiocmget(struct tty_struct *tty) 1616 { 1617 struct usb_serial_port *port = tty->driver_data; 1618 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1619 unsigned int result = 0; 1620 unsigned int msr; 1621 unsigned int mcr; 1622 1623 msr = edge_port->shadowMSR; 1624 mcr = edge_port->shadowMCR; 1625 result = ((mcr & MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ 1626 | ((mcr & MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ 1627 | ((msr & EDGEPORT_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ 1628 | ((msr & EDGEPORT_MSR_CD) ? TIOCM_CAR: 0) /* 0x040 */ 1629 | ((msr & EDGEPORT_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ 1630 | ((msr & EDGEPORT_MSR_DSR) ? TIOCM_DSR: 0); /* 0x100 */ 1631 1632 return result; 1633 } 1634 1635 static int get_serial_info(struct edgeport_port *edge_port, 1636 struct serial_struct __user *retinfo) 1637 { 1638 struct serial_struct tmp; 1639 1640 memset(&tmp, 0, sizeof(tmp)); 1641 1642 tmp.type = PORT_16550A; 1643 tmp.line = edge_port->port->minor; 1644 tmp.port = edge_port->port->port_number; 1645 tmp.irq = 0; 1646 tmp.xmit_fifo_size = edge_port->maxTxCredits; 1647 tmp.baud_base = 9600; 1648 tmp.close_delay = 5*HZ; 1649 tmp.closing_wait = 30*HZ; 1650 1651 if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) 1652 return -EFAULT; 1653 return 0; 1654 } 1655 1656 1657 /***************************************************************************** 1658 * SerialIoctl 1659 * this function handles any ioctl calls to the driver 1660 *****************************************************************************/ 1661 static int edge_ioctl(struct tty_struct *tty, 1662 unsigned int cmd, unsigned long arg) 1663 { 1664 struct usb_serial_port *port = tty->driver_data; 1665 DEFINE_WAIT(wait); 1666 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1667 1668 switch (cmd) { 1669 case TIOCSERGETLSR: 1670 dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); 1671 return get_lsr_info(edge_port, (unsigned int __user *) arg); 1672 1673 case TIOCGSERIAL: 1674 dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); 1675 return get_serial_info(edge_port, (struct serial_struct __user *) arg); 1676 } 1677 return -ENOIOCTLCMD; 1678 } 1679 1680 1681 /***************************************************************************** 1682 * SerialBreak 1683 * this function sends a break to the port 1684 *****************************************************************************/ 1685 static void edge_break(struct tty_struct *tty, int break_state) 1686 { 1687 struct usb_serial_port *port = tty->driver_data; 1688 struct edgeport_port *edge_port = usb_get_serial_port_data(port); 1689 struct edgeport_serial *edge_serial = usb_get_serial_data(port->serial); 1690 int status; 1691 1692 if (!edge_serial->is_epic || 1693 edge_serial->epic_descriptor.Supports.IOSPChase) { 1694 /* flush and chase */ 1695 edge_port->chaseResponsePending = true; 1696 1697 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CHASE_PORT\n", __func__); 1698 status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0); 1699 if (status == 0) { 1700 /* block until chase finished */ 1701 block_until_chase_response(edge_port); 1702 } else { 1703 edge_port->chaseResponsePending = false; 1704 } 1705 } 1706 1707 if (!edge_serial->is_epic || 1708 edge_serial->epic_descriptor.Supports.IOSPSetClrBreak) { 1709 if (break_state == -1) { 1710 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_SET_BREAK\n", __func__); 1711 status = send_iosp_ext_cmd(edge_port, 1712 IOSP_CMD_SET_BREAK, 0); 1713 } else { 1714 dev_dbg(&port->dev, "%s - Sending IOSP_CMD_CLEAR_BREAK\n", __func__); 1715 status = send_iosp_ext_cmd(edge_port, 1716 IOSP_CMD_CLEAR_BREAK, 0); 1717 } 1718 if (status) 1719 dev_dbg(&port->dev, "%s - error sending break set/clear command.\n", 1720 __func__); 1721 } 1722 } 1723 1724 1725 /***************************************************************************** 1726 * process_rcvd_data 1727 * this function handles the data received on the bulk in pipe. 1728 *****************************************************************************/ 1729 static void process_rcvd_data(struct edgeport_serial *edge_serial, 1730 unsigned char *buffer, __u16 bufferLength) 1731 { 1732 struct device *dev = &edge_serial->serial->dev->dev; 1733 struct usb_serial_port *port; 1734 struct edgeport_port *edge_port; 1735 __u16 lastBufferLength; 1736 __u16 rxLen; 1737 1738 lastBufferLength = bufferLength + 1; 1739 1740 while (bufferLength > 0) { 1741 /* failsafe incase we get a message that we don't understand */ 1742 if (lastBufferLength == bufferLength) { 1743 dev_dbg(dev, "%s - stuck in loop, exiting it.\n", __func__); 1744 break; 1745 } 1746 lastBufferLength = bufferLength; 1747 1748 switch (edge_serial->rxState) { 1749 case EXPECT_HDR1: 1750 edge_serial->rxHeader1 = *buffer; 1751 ++buffer; 1752 --bufferLength; 1753 1754 if (bufferLength == 0) { 1755 edge_serial->rxState = EXPECT_HDR2; 1756 break; 1757 } 1758 /* otherwise, drop on through */ 1759 case EXPECT_HDR2: 1760 edge_serial->rxHeader2 = *buffer; 1761 ++buffer; 1762 --bufferLength; 1763 1764 dev_dbg(dev, "%s - Hdr1=%02X Hdr2=%02X\n", __func__, 1765 edge_serial->rxHeader1, edge_serial->rxHeader2); 1766 /* Process depending on whether this header is 1767 * data or status */ 1768 1769 if (IS_CMD_STAT_HDR(edge_serial->rxHeader1)) { 1770 /* Decode this status header and go to 1771 * EXPECT_HDR1 (if we can process the status 1772 * with only 2 bytes), or go to EXPECT_HDR3 to 1773 * get the third byte. */ 1774 edge_serial->rxPort = 1775 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1776 edge_serial->rxStatusCode = 1777 IOSP_GET_STATUS_CODE( 1778 edge_serial->rxHeader1); 1779 1780 if (!IOSP_STATUS_IS_2BYTE( 1781 edge_serial->rxStatusCode)) { 1782 /* This status needs additional bytes. 1783 * Save what we have and then wait for 1784 * more data. 1785 */ 1786 edge_serial->rxStatusParam 1787 = edge_serial->rxHeader2; 1788 edge_serial->rxState = EXPECT_HDR3; 1789 break; 1790 } 1791 /* We have all the header bytes, process the 1792 status now */ 1793 process_rcvd_status(edge_serial, 1794 edge_serial->rxHeader2, 0); 1795 edge_serial->rxState = EXPECT_HDR1; 1796 break; 1797 } else { 1798 edge_serial->rxPort = 1799 IOSP_GET_HDR_PORT(edge_serial->rxHeader1); 1800 edge_serial->rxBytesRemaining = 1801 IOSP_GET_HDR_DATA_LEN( 1802 edge_serial->rxHeader1, 1803 edge_serial->rxHeader2); 1804 dev_dbg(dev, "%s - Data for Port %u Len %u\n", 1805 __func__, 1806 edge_serial->rxPort, 1807 edge_serial->rxBytesRemaining); 1808 1809 /* ASSERT(DevExt->RxPort < DevExt->NumPorts); 1810 * ASSERT(DevExt->RxBytesRemaining < 1811 * IOSP_MAX_DATA_LENGTH); 1812 */ 1813 1814 if (bufferLength == 0) { 1815 edge_serial->rxState = EXPECT_DATA; 1816 break; 1817 } 1818 /* Else, drop through */ 1819 } 1820 case EXPECT_DATA: /* Expect data */ 1821 if (bufferLength < edge_serial->rxBytesRemaining) { 1822 rxLen = bufferLength; 1823 /* Expect data to start next buffer */ 1824 edge_serial->rxState = EXPECT_DATA; 1825 } else { 1826 /* BufLen >= RxBytesRemaining */ 1827 rxLen = edge_serial->rxBytesRemaining; 1828 /* Start another header next time */ 1829 edge_serial->rxState = EXPECT_HDR1; 1830 } 1831 1832 bufferLength -= rxLen; 1833 edge_serial->rxBytesRemaining -= rxLen; 1834 1835 /* spit this data back into the tty driver if this 1836 port is open */ 1837 if (rxLen) { 1838 port = edge_serial->serial->port[ 1839 edge_serial->rxPort]; 1840 edge_port = usb_get_serial_port_data(port); 1841 if (edge_port->open) { 1842 dev_dbg(dev, "%s - Sending %d bytes to TTY for port %d\n", 1843 __func__, rxLen, 1844 edge_serial->rxPort); 1845 edge_tty_recv(edge_port->port, buffer, 1846 rxLen); 1847 edge_port->port->icount.rx += rxLen; 1848 } 1849 buffer += rxLen; 1850 } 1851 break; 1852 1853 case EXPECT_HDR3: /* Expect 3rd byte of status header */ 1854 edge_serial->rxHeader3 = *buffer; 1855 ++buffer; 1856 --bufferLength; 1857 1858 /* We have all the header bytes, process the 1859 status now */ 1860 process_rcvd_status(edge_serial, 1861 edge_serial->rxStatusParam, 1862 edge_serial->rxHeader3); 1863 edge_serial->rxState = EXPECT_HDR1; 1864 break; 1865 } 1866 } 1867 } 1868 1869 1870 /***************************************************************************** 1871 * process_rcvd_status 1872 * this function handles the any status messages received on the 1873 * bulk in pipe. 1874 *****************************************************************************/ 1875 static void process_rcvd_status(struct edgeport_serial *edge_serial, 1876 __u8 byte2, __u8 byte3) 1877 { 1878 struct usb_serial_port *port; 1879 struct edgeport_port *edge_port; 1880 struct tty_struct *tty; 1881 struct device *dev; 1882 __u8 code = edge_serial->rxStatusCode; 1883 1884 /* switch the port pointer to the one being currently talked about */ 1885 port = edge_serial->serial->port[edge_serial->rxPort]; 1886 edge_port = usb_get_serial_port_data(port); 1887 if (edge_port == NULL) { 1888 dev_err(&edge_serial->serial->dev->dev, 1889 "%s - edge_port == NULL for port %d\n", 1890 __func__, edge_serial->rxPort); 1891 return; 1892 } 1893 dev = &port->dev; 1894 1895 if (code == IOSP_EXT_STATUS) { 1896 switch (byte2) { 1897 case IOSP_EXT_STATUS_CHASE_RSP: 1898 /* we want to do EXT status regardless of port 1899 * open/closed */ 1900 dev_dbg(dev, "%s - Port %u EXT CHASE_RSP Data = %02x\n", 1901 __func__, edge_serial->rxPort, byte3); 1902 /* Currently, the only EXT_STATUS is Chase, so process 1903 * here instead of one more call to one more subroutine 1904 * If/when more EXT_STATUS, there'll be more work to do 1905 * Also, we currently clear flag and close the port 1906 * regardless of content of above's Byte3. 1907 * We could choose to do something else when Byte3 says 1908 * Timeout on Chase from Edgeport, like wait longer in 1909 * block_until_chase_response, but for now we don't. 1910 */ 1911 edge_port->chaseResponsePending = false; 1912 wake_up(&edge_port->wait_chase); 1913 return; 1914 1915 case IOSP_EXT_STATUS_RX_CHECK_RSP: 1916 dev_dbg(dev, "%s ========== Port %u CHECK_RSP Sequence = %02x =============\n", 1917 __func__, edge_serial->rxPort, byte3); 1918 /* Port->RxCheckRsp = true; */ 1919 return; 1920 } 1921 } 1922 1923 if (code == IOSP_STATUS_OPEN_RSP) { 1924 edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3); 1925 edge_port->maxTxCredits = edge_port->txCredits; 1926 dev_dbg(dev, "%s - Port %u Open Response Initial MSR = %02x TxBufferSize = %d\n", 1927 __func__, edge_serial->rxPort, byte2, edge_port->txCredits); 1928 handle_new_msr(edge_port, byte2); 1929 1930 /* send the current line settings to the port so we are 1931 in sync with any further termios calls */ 1932 tty = tty_port_tty_get(&edge_port->port->port); 1933 if (tty) { 1934 change_port_settings(tty, 1935 edge_port, &tty->termios); 1936 tty_kref_put(tty); 1937 } 1938 1939 /* we have completed the open */ 1940 edge_port->openPending = false; 1941 edge_port->open = true; 1942 wake_up(&edge_port->wait_open); 1943 return; 1944 } 1945 1946 /* If port is closed, silently discard all rcvd status. We can 1947 * have cases where buffered status is received AFTER the close 1948 * port command is sent to the Edgeport. 1949 */ 1950 if (!edge_port->open || edge_port->closePending) 1951 return; 1952 1953 switch (code) { 1954 /* Not currently sent by Edgeport */ 1955 case IOSP_STATUS_LSR: 1956 dev_dbg(dev, "%s - Port %u LSR Status = %02x\n", 1957 __func__, edge_serial->rxPort, byte2); 1958 handle_new_lsr(edge_port, false, byte2, 0); 1959 break; 1960 1961 case IOSP_STATUS_LSR_DATA: 1962 dev_dbg(dev, "%s - Port %u LSR Status = %02x, Data = %02x\n", 1963 __func__, edge_serial->rxPort, byte2, byte3); 1964 /* byte2 is LSR Register */ 1965 /* byte3 is broken data byte */ 1966 handle_new_lsr(edge_port, true, byte2, byte3); 1967 break; 1968 /* 1969 * case IOSP_EXT_4_STATUS: 1970 * dev_dbg(dev, "%s - Port %u LSR Status = %02x Data = %02x\n", 1971 * __func__, edge_serial->rxPort, byte2, byte3); 1972 * break; 1973 */ 1974 case IOSP_STATUS_MSR: 1975 dev_dbg(dev, "%s - Port %u MSR Status = %02x\n", 1976 __func__, edge_serial->rxPort, byte2); 1977 /* 1978 * Process this new modem status and generate appropriate 1979 * events, etc, based on the new status. This routine 1980 * also saves the MSR in Port->ShadowMsr. 1981 */ 1982 handle_new_msr(edge_port, byte2); 1983 break; 1984 1985 default: 1986 dev_dbg(dev, "%s - Unrecognized IOSP status code %u\n", __func__, code); 1987 break; 1988 } 1989 } 1990 1991 1992 /***************************************************************************** 1993 * edge_tty_recv 1994 * this function passes data on to the tty flip buffer 1995 *****************************************************************************/ 1996 static void edge_tty_recv(struct usb_serial_port *port, unsigned char *data, 1997 int length) 1998 { 1999 int cnt; 2000 2001 cnt = tty_insert_flip_string(&port->port, data, length); 2002 if (cnt < length) { 2003 dev_err(&port->dev, "%s - dropping data, %d bytes lost\n", 2004 __func__, length - cnt); 2005 } 2006 data += cnt; 2007 length -= cnt; 2008 2009 tty_flip_buffer_push(&port->port); 2010 } 2011 2012 2013 /***************************************************************************** 2014 * handle_new_msr 2015 * this function handles any change to the msr register for a port. 2016 *****************************************************************************/ 2017 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) 2018 { 2019 struct async_icount *icount; 2020 2021 if (newMsr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | 2022 EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) { 2023 icount = &edge_port->port->icount; 2024 2025 /* update input line counters */ 2026 if (newMsr & EDGEPORT_MSR_DELTA_CTS) 2027 icount->cts++; 2028 if (newMsr & EDGEPORT_MSR_DELTA_DSR) 2029 icount->dsr++; 2030 if (newMsr & EDGEPORT_MSR_DELTA_CD) 2031 icount->dcd++; 2032 if (newMsr & EDGEPORT_MSR_DELTA_RI) 2033 icount->rng++; 2034 wake_up_interruptible(&edge_port->port->port.delta_msr_wait); 2035 } 2036 2037 /* Save the new modem status */ 2038 edge_port->shadowMSR = newMsr & 0xf0; 2039 } 2040 2041 2042 /***************************************************************************** 2043 * handle_new_lsr 2044 * this function handles any change to the lsr register for a port. 2045 *****************************************************************************/ 2046 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, 2047 __u8 lsr, __u8 data) 2048 { 2049 __u8 newLsr = (__u8) (lsr & (__u8) 2050 (LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK)); 2051 struct async_icount *icount; 2052 2053 edge_port->shadowLSR = lsr; 2054 2055 if (newLsr & LSR_BREAK) { 2056 /* 2057 * Parity and Framing errors only count if they 2058 * occur exclusive of a break being 2059 * received. 2060 */ 2061 newLsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK); 2062 } 2063 2064 /* Place LSR data byte into Rx buffer */ 2065 if (lsrData) 2066 edge_tty_recv(edge_port->port, &data, 1); 2067 2068 /* update input line counters */ 2069 icount = &edge_port->port->icount; 2070 if (newLsr & LSR_BREAK) 2071 icount->brk++; 2072 if (newLsr & LSR_OVER_ERR) 2073 icount->overrun++; 2074 if (newLsr & LSR_PAR_ERR) 2075 icount->parity++; 2076 if (newLsr & LSR_FRM_ERR) 2077 icount->frame++; 2078 } 2079 2080 2081 /**************************************************************************** 2082 * sram_write 2083 * writes a number of bytes to the Edgeport device's sram starting at the 2084 * given address. 2085 * If successful returns the number of bytes written, otherwise it returns 2086 * a negative error number of the problem. 2087 ****************************************************************************/ 2088 static int sram_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2089 __u16 length, const __u8 *data) 2090 { 2091 int result; 2092 __u16 current_length; 2093 unsigned char *transfer_buffer; 2094 2095 dev_dbg(&serial->dev->dev, "%s - %x, %x, %d\n", __func__, extAddr, addr, length); 2096 2097 transfer_buffer = kmalloc(64, GFP_KERNEL); 2098 if (!transfer_buffer) 2099 return -ENOMEM; 2100 2101 /* need to split these writes up into 64 byte chunks */ 2102 result = 0; 2103 while (length > 0) { 2104 if (length > 64) 2105 current_length = 64; 2106 else 2107 current_length = length; 2108 2109 /* dev_dbg(&serial->dev->dev, "%s - writing %x, %x, %d\n", __func__, extAddr, addr, current_length); */ 2110 memcpy(transfer_buffer, data, current_length); 2111 result = usb_control_msg(serial->dev, 2112 usb_sndctrlpipe(serial->dev, 0), 2113 USB_REQUEST_ION_WRITE_RAM, 2114 0x40, addr, extAddr, transfer_buffer, 2115 current_length, 300); 2116 if (result < 0) 2117 break; 2118 length -= current_length; 2119 addr += current_length; 2120 data += current_length; 2121 } 2122 2123 kfree(transfer_buffer); 2124 return result; 2125 } 2126 2127 2128 /**************************************************************************** 2129 * rom_write 2130 * writes a number of bytes to the Edgeport device's ROM starting at the 2131 * given address. 2132 * If successful returns the number of bytes written, otherwise it returns 2133 * a negative error number of the problem. 2134 ****************************************************************************/ 2135 static int rom_write(struct usb_serial *serial, __u16 extAddr, __u16 addr, 2136 __u16 length, const __u8 *data) 2137 { 2138 int result; 2139 __u16 current_length; 2140 unsigned char *transfer_buffer; 2141 2142 transfer_buffer = kmalloc(64, GFP_KERNEL); 2143 if (!transfer_buffer) 2144 return -ENOMEM; 2145 2146 /* need to split these writes up into 64 byte chunks */ 2147 result = 0; 2148 while (length > 0) { 2149 if (length > 64) 2150 current_length = 64; 2151 else 2152 current_length = length; 2153 memcpy(transfer_buffer, data, current_length); 2154 result = usb_control_msg(serial->dev, 2155 usb_sndctrlpipe(serial->dev, 0), 2156 USB_REQUEST_ION_WRITE_ROM, 0x40, 2157 addr, extAddr, 2158 transfer_buffer, current_length, 300); 2159 if (result < 0) 2160 break; 2161 length -= current_length; 2162 addr += current_length; 2163 data += current_length; 2164 } 2165 2166 kfree(transfer_buffer); 2167 return result; 2168 } 2169 2170 2171 /**************************************************************************** 2172 * rom_read 2173 * reads a number of bytes from the Edgeport device starting at the given 2174 * address. 2175 * Returns zero on success or a negative error number. 2176 ****************************************************************************/ 2177 static int rom_read(struct usb_serial *serial, __u16 extAddr, 2178 __u16 addr, __u16 length, __u8 *data) 2179 { 2180 int result; 2181 __u16 current_length; 2182 unsigned char *transfer_buffer; 2183 2184 transfer_buffer = kmalloc(64, GFP_KERNEL); 2185 if (!transfer_buffer) 2186 return -ENOMEM; 2187 2188 /* need to split these reads up into 64 byte chunks */ 2189 result = 0; 2190 while (length > 0) { 2191 if (length > 64) 2192 current_length = 64; 2193 else 2194 current_length = length; 2195 result = usb_control_msg(serial->dev, 2196 usb_rcvctrlpipe(serial->dev, 0), 2197 USB_REQUEST_ION_READ_ROM, 2198 0xC0, addr, extAddr, transfer_buffer, 2199 current_length, 300); 2200 if (result < current_length) { 2201 if (result >= 0) 2202 result = -EIO; 2203 break; 2204 } 2205 memcpy(data, transfer_buffer, current_length); 2206 length -= current_length; 2207 addr += current_length; 2208 data += current_length; 2209 2210 result = 0; 2211 } 2212 2213 kfree(transfer_buffer); 2214 return result; 2215 } 2216 2217 2218 /**************************************************************************** 2219 * send_iosp_ext_cmd 2220 * Is used to send a IOSP message to the Edgeport device 2221 ****************************************************************************/ 2222 static int send_iosp_ext_cmd(struct edgeport_port *edge_port, 2223 __u8 command, __u8 param) 2224 { 2225 unsigned char *buffer; 2226 unsigned char *currentCommand; 2227 int length = 0; 2228 int status = 0; 2229 2230 buffer = kmalloc(10, GFP_ATOMIC); 2231 if (!buffer) 2232 return -ENOMEM; 2233 2234 currentCommand = buffer; 2235 2236 MAKE_CMD_EXT_CMD(¤tCommand, &length, edge_port->port->port_number, 2237 command, param); 2238 2239 status = write_cmd_usb(edge_port, buffer, length); 2240 if (status) { 2241 /* something bad happened, let's free up the memory */ 2242 kfree(buffer); 2243 } 2244 2245 return status; 2246 } 2247 2248 2249 /***************************************************************************** 2250 * write_cmd_usb 2251 * this function writes the given buffer out to the bulk write endpoint. 2252 *****************************************************************************/ 2253 static int write_cmd_usb(struct edgeport_port *edge_port, 2254 unsigned char *buffer, int length) 2255 { 2256 struct edgeport_serial *edge_serial = 2257 usb_get_serial_data(edge_port->port->serial); 2258 struct device *dev = &edge_port->port->dev; 2259 int status = 0; 2260 struct urb *urb; 2261 2262 usb_serial_debug_data(dev, __func__, length, buffer); 2263 2264 /* Allocate our next urb */ 2265 urb = usb_alloc_urb(0, GFP_ATOMIC); 2266 if (!urb) 2267 return -ENOMEM; 2268 2269 atomic_inc(&CmdUrbs); 2270 dev_dbg(dev, "%s - ALLOCATE URB %p (outstanding %d)\n", 2271 __func__, urb, atomic_read(&CmdUrbs)); 2272 2273 usb_fill_bulk_urb(urb, edge_serial->serial->dev, 2274 usb_sndbulkpipe(edge_serial->serial->dev, 2275 edge_serial->bulk_out_endpoint), 2276 buffer, length, edge_bulk_out_cmd_callback, edge_port); 2277 2278 edge_port->commandPending = true; 2279 status = usb_submit_urb(urb, GFP_ATOMIC); 2280 2281 if (status) { 2282 /* something went wrong */ 2283 dev_err(dev, "%s - usb_submit_urb(write command) failed, status = %d\n", 2284 __func__, status); 2285 usb_kill_urb(urb); 2286 usb_free_urb(urb); 2287 atomic_dec(&CmdUrbs); 2288 return status; 2289 } 2290 2291 #if 0 2292 wait_event(&edge_port->wait_command, !edge_port->commandPending); 2293 2294 if (edge_port->commandPending) { 2295 /* command timed out */ 2296 dev_dbg(dev, "%s - command timed out\n", __func__); 2297 status = -EINVAL; 2298 } 2299 #endif 2300 return status; 2301 } 2302 2303 2304 /***************************************************************************** 2305 * send_cmd_write_baud_rate 2306 * this function sends the proper command to change the baud rate of the 2307 * specified port. 2308 *****************************************************************************/ 2309 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port, 2310 int baudRate) 2311 { 2312 struct edgeport_serial *edge_serial = 2313 usb_get_serial_data(edge_port->port->serial); 2314 struct device *dev = &edge_port->port->dev; 2315 unsigned char *cmdBuffer; 2316 unsigned char *currCmd; 2317 int cmdLen = 0; 2318 int divisor; 2319 int status; 2320 u32 number = edge_port->port->port_number; 2321 2322 if (edge_serial->is_epic && 2323 !edge_serial->epic_descriptor.Supports.IOSPSetBaudRate) { 2324 dev_dbg(dev, "SendCmdWriteBaudRate - NOT Setting baud rate for port, baud = %d\n", 2325 baudRate); 2326 return 0; 2327 } 2328 2329 dev_dbg(dev, "%s - baud = %d\n", __func__, baudRate); 2330 2331 status = calc_baud_rate_divisor(dev, baudRate, &divisor); 2332 if (status) { 2333 dev_err(dev, "%s - bad baud rate\n", __func__); 2334 return status; 2335 } 2336 2337 /* Alloc memory for the string of commands. */ 2338 cmdBuffer = kmalloc(0x100, GFP_ATOMIC); 2339 if (!cmdBuffer) 2340 return -ENOMEM; 2341 2342 currCmd = cmdBuffer; 2343 2344 /* Enable access to divisor latch */ 2345 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, LCR_DL_ENABLE); 2346 2347 /* Write the divisor itself */ 2348 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLL, LOW8(divisor)); 2349 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, DLM, HIGH8(divisor)); 2350 2351 /* Restore original value to disable access to divisor latch */ 2352 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, number, LCR, 2353 edge_port->shadowLCR); 2354 2355 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2356 if (status) { 2357 /* something bad happened, let's free up the memory */ 2358 kfree(cmdBuffer); 2359 } 2360 2361 return status; 2362 } 2363 2364 2365 /***************************************************************************** 2366 * calc_baud_rate_divisor 2367 * this function calculates the proper baud rate divisor for the specified 2368 * baud rate. 2369 *****************************************************************************/ 2370 static int calc_baud_rate_divisor(struct device *dev, int baudrate, int *divisor) 2371 { 2372 int i; 2373 __u16 custom; 2374 2375 for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { 2376 if (divisor_table[i].BaudRate == baudrate) { 2377 *divisor = divisor_table[i].Divisor; 2378 return 0; 2379 } 2380 } 2381 2382 /* We have tried all of the standard baud rates 2383 * lets try to calculate the divisor for this baud rate 2384 * Make sure the baud rate is reasonable */ 2385 if (baudrate > 50 && baudrate < 230400) { 2386 /* get divisor */ 2387 custom = (__u16)((230400L + baudrate/2) / baudrate); 2388 2389 *divisor = custom; 2390 2391 dev_dbg(dev, "%s - Baud %d = %d\n", __func__, baudrate, custom); 2392 return 0; 2393 } 2394 2395 return -1; 2396 } 2397 2398 2399 /***************************************************************************** 2400 * send_cmd_write_uart_register 2401 * this function builds up a uart register message and sends to the device. 2402 *****************************************************************************/ 2403 static int send_cmd_write_uart_register(struct edgeport_port *edge_port, 2404 __u8 regNum, __u8 regValue) 2405 { 2406 struct edgeport_serial *edge_serial = 2407 usb_get_serial_data(edge_port->port->serial); 2408 struct device *dev = &edge_port->port->dev; 2409 unsigned char *cmdBuffer; 2410 unsigned char *currCmd; 2411 unsigned long cmdLen = 0; 2412 int status; 2413 2414 dev_dbg(dev, "%s - write to %s register 0x%02x\n", 2415 (regNum == MCR) ? "MCR" : "LCR", __func__, regValue); 2416 2417 if (edge_serial->is_epic && 2418 !edge_serial->epic_descriptor.Supports.IOSPWriteMCR && 2419 regNum == MCR) { 2420 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to MCR Register\n"); 2421 return 0; 2422 } 2423 2424 if (edge_serial->is_epic && 2425 !edge_serial->epic_descriptor.Supports.IOSPWriteLCR && 2426 regNum == LCR) { 2427 dev_dbg(dev, "SendCmdWriteUartReg - Not writing to LCR Register\n"); 2428 return 0; 2429 } 2430 2431 /* Alloc memory for the string of commands. */ 2432 cmdBuffer = kmalloc(0x10, GFP_ATOMIC); 2433 if (cmdBuffer == NULL) 2434 return -ENOMEM; 2435 2436 currCmd = cmdBuffer; 2437 2438 /* Build a cmd in the buffer to write the given register */ 2439 MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number, 2440 regNum, regValue); 2441 2442 status = write_cmd_usb(edge_port, cmdBuffer, cmdLen); 2443 if (status) { 2444 /* something bad happened, let's free up the memory */ 2445 kfree(cmdBuffer); 2446 } 2447 2448 return status; 2449 } 2450 2451 2452 /***************************************************************************** 2453 * change_port_settings 2454 * This routine is called to set the UART on the device to match the 2455 * specified new settings. 2456 *****************************************************************************/ 2457 2458 static void change_port_settings(struct tty_struct *tty, 2459 struct edgeport_port *edge_port, struct ktermios *old_termios) 2460 { 2461 struct device *dev = &edge_port->port->dev; 2462 struct edgeport_serial *edge_serial = 2463 usb_get_serial_data(edge_port->port->serial); 2464 int baud; 2465 unsigned cflag; 2466 __u8 mask = 0xff; 2467 __u8 lData; 2468 __u8 lParity; 2469 __u8 lStop; 2470 __u8 rxFlow; 2471 __u8 txFlow; 2472 int status; 2473 2474 if (!edge_port->open && 2475 !edge_port->openPending) { 2476 dev_dbg(dev, "%s - port not opened\n", __func__); 2477 return; 2478 } 2479 2480 cflag = tty->termios.c_cflag; 2481 2482 switch (cflag & CSIZE) { 2483 case CS5: 2484 lData = LCR_BITS_5; mask = 0x1f; 2485 dev_dbg(dev, "%s - data bits = 5\n", __func__); 2486 break; 2487 case CS6: 2488 lData = LCR_BITS_6; mask = 0x3f; 2489 dev_dbg(dev, "%s - data bits = 6\n", __func__); 2490 break; 2491 case CS7: 2492 lData = LCR_BITS_7; mask = 0x7f; 2493 dev_dbg(dev, "%s - data bits = 7\n", __func__); 2494 break; 2495 default: 2496 case CS8: 2497 lData = LCR_BITS_8; 2498 dev_dbg(dev, "%s - data bits = 8\n", __func__); 2499 break; 2500 } 2501 2502 lParity = LCR_PAR_NONE; 2503 if (cflag & PARENB) { 2504 if (cflag & CMSPAR) { 2505 if (cflag & PARODD) { 2506 lParity = LCR_PAR_MARK; 2507 dev_dbg(dev, "%s - parity = mark\n", __func__); 2508 } else { 2509 lParity = LCR_PAR_SPACE; 2510 dev_dbg(dev, "%s - parity = space\n", __func__); 2511 } 2512 } else if (cflag & PARODD) { 2513 lParity = LCR_PAR_ODD; 2514 dev_dbg(dev, "%s - parity = odd\n", __func__); 2515 } else { 2516 lParity = LCR_PAR_EVEN; 2517 dev_dbg(dev, "%s - parity = even\n", __func__); 2518 } 2519 } else { 2520 dev_dbg(dev, "%s - parity = none\n", __func__); 2521 } 2522 2523 if (cflag & CSTOPB) { 2524 lStop = LCR_STOP_2; 2525 dev_dbg(dev, "%s - stop bits = 2\n", __func__); 2526 } else { 2527 lStop = LCR_STOP_1; 2528 dev_dbg(dev, "%s - stop bits = 1\n", __func__); 2529 } 2530 2531 /* figure out the flow control settings */ 2532 rxFlow = txFlow = 0x00; 2533 if (cflag & CRTSCTS) { 2534 rxFlow |= IOSP_RX_FLOW_RTS; 2535 txFlow |= IOSP_TX_FLOW_CTS; 2536 dev_dbg(dev, "%s - RTS/CTS is enabled\n", __func__); 2537 } else { 2538 dev_dbg(dev, "%s - RTS/CTS is disabled\n", __func__); 2539 } 2540 2541 /* if we are implementing XON/XOFF, set the start and stop character 2542 in the device */ 2543 if (I_IXOFF(tty) || I_IXON(tty)) { 2544 unsigned char stop_char = STOP_CHAR(tty); 2545 unsigned char start_char = START_CHAR(tty); 2546 2547 if (!edge_serial->is_epic || 2548 edge_serial->epic_descriptor.Supports.IOSPSetXChar) { 2549 send_iosp_ext_cmd(edge_port, 2550 IOSP_CMD_SET_XON_CHAR, start_char); 2551 send_iosp_ext_cmd(edge_port, 2552 IOSP_CMD_SET_XOFF_CHAR, stop_char); 2553 } 2554 2555 /* if we are implementing INBOUND XON/XOFF */ 2556 if (I_IXOFF(tty)) { 2557 rxFlow |= IOSP_RX_FLOW_XON_XOFF; 2558 dev_dbg(dev, "%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2559 __func__, start_char, stop_char); 2560 } else { 2561 dev_dbg(dev, "%s - INBOUND XON/XOFF is disabled\n", __func__); 2562 } 2563 2564 /* if we are implementing OUTBOUND XON/XOFF */ 2565 if (I_IXON(tty)) { 2566 txFlow |= IOSP_TX_FLOW_XON_XOFF; 2567 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x\n", 2568 __func__, start_char, stop_char); 2569 } else { 2570 dev_dbg(dev, "%s - OUTBOUND XON/XOFF is disabled\n", __func__); 2571 } 2572 } 2573 2574 /* Set flow control to the configured value */ 2575 if (!edge_serial->is_epic || 2576 edge_serial->epic_descriptor.Supports.IOSPSetRxFlow) 2577 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow); 2578 if (!edge_serial->is_epic || 2579 edge_serial->epic_descriptor.Supports.IOSPSetTxFlow) 2580 send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow); 2581 2582 2583 edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); 2584 edge_port->shadowLCR |= (lData | lParity | lStop); 2585 2586 edge_port->validDataMask = mask; 2587 2588 /* Send the updated LCR value to the EdgePort */ 2589 status = send_cmd_write_uart_register(edge_port, LCR, 2590 edge_port->shadowLCR); 2591 if (status != 0) 2592 return; 2593 2594 /* set up the MCR register and send it to the EdgePort */ 2595 edge_port->shadowMCR = MCR_MASTER_IE; 2596 if (cflag & CBAUD) 2597 edge_port->shadowMCR |= (MCR_DTR | MCR_RTS); 2598 2599 status = send_cmd_write_uart_register(edge_port, MCR, 2600 edge_port->shadowMCR); 2601 if (status != 0) 2602 return; 2603 2604 /* Determine divisor based on baud rate */ 2605 baud = tty_get_baud_rate(tty); 2606 if (!baud) { 2607 /* pick a default, any default... */ 2608 baud = 9600; 2609 } 2610 2611 dev_dbg(dev, "%s - baud rate = %d\n", __func__, baud); 2612 status = send_cmd_write_baud_rate(edge_port, baud); 2613 if (status == -1) { 2614 /* Speed change was not possible - put back the old speed */ 2615 baud = tty_termios_baud_rate(old_termios); 2616 tty_encode_baud_rate(tty, baud, baud); 2617 } 2618 } 2619 2620 2621 /**************************************************************************** 2622 * unicode_to_ascii 2623 * Turns a string from Unicode into ASCII. 2624 * Doesn't do a good job with any characters that are outside the normal 2625 * ASCII range, but it's only for debugging... 2626 * NOTE: expects the unicode in LE format 2627 ****************************************************************************/ 2628 static void unicode_to_ascii(char *string, int buflen, 2629 __le16 *unicode, int unicode_size) 2630 { 2631 int i; 2632 2633 if (buflen <= 0) /* never happens, but... */ 2634 return; 2635 --buflen; /* space for nul */ 2636 2637 for (i = 0; i < unicode_size; i++) { 2638 if (i >= buflen) 2639 break; 2640 string[i] = (char)(le16_to_cpu(unicode[i])); 2641 } 2642 string[i] = 0x00; 2643 } 2644 2645 2646 /**************************************************************************** 2647 * get_manufacturing_desc 2648 * reads in the manufacturing descriptor and stores it into the serial 2649 * structure. 2650 ****************************************************************************/ 2651 static void get_manufacturing_desc(struct edgeport_serial *edge_serial) 2652 { 2653 struct device *dev = &edge_serial->serial->dev->dev; 2654 int response; 2655 2656 dev_dbg(dev, "getting manufacturer descriptor\n"); 2657 2658 response = rom_read(edge_serial->serial, 2659 (EDGE_MANUF_DESC_ADDR & 0xffff0000) >> 16, 2660 (__u16)(EDGE_MANUF_DESC_ADDR & 0x0000ffff), 2661 EDGE_MANUF_DESC_LEN, 2662 (__u8 *)(&edge_serial->manuf_descriptor)); 2663 2664 if (response < 0) { 2665 dev_err(dev, "error in getting manufacturer descriptor: %d\n", 2666 response); 2667 } else { 2668 char string[30]; 2669 dev_dbg(dev, "**Manufacturer Descriptor\n"); 2670 dev_dbg(dev, " RomSize: %dK\n", 2671 edge_serial->manuf_descriptor.RomSize); 2672 dev_dbg(dev, " RamSize: %dK\n", 2673 edge_serial->manuf_descriptor.RamSize); 2674 dev_dbg(dev, " CpuRev: %d\n", 2675 edge_serial->manuf_descriptor.CpuRev); 2676 dev_dbg(dev, " BoardRev: %d\n", 2677 edge_serial->manuf_descriptor.BoardRev); 2678 dev_dbg(dev, " NumPorts: %d\n", 2679 edge_serial->manuf_descriptor.NumPorts); 2680 dev_dbg(dev, " DescDate: %d/%d/%d\n", 2681 edge_serial->manuf_descriptor.DescDate[0], 2682 edge_serial->manuf_descriptor.DescDate[1], 2683 edge_serial->manuf_descriptor.DescDate[2]+1900); 2684 unicode_to_ascii(string, sizeof(string), 2685 edge_serial->manuf_descriptor.SerialNumber, 2686 edge_serial->manuf_descriptor.SerNumLength/2); 2687 dev_dbg(dev, " SerialNumber: %s\n", string); 2688 unicode_to_ascii(string, sizeof(string), 2689 edge_serial->manuf_descriptor.AssemblyNumber, 2690 edge_serial->manuf_descriptor.AssemblyNumLength/2); 2691 dev_dbg(dev, " AssemblyNumber: %s\n", string); 2692 unicode_to_ascii(string, sizeof(string), 2693 edge_serial->manuf_descriptor.OemAssyNumber, 2694 edge_serial->manuf_descriptor.OemAssyNumLength/2); 2695 dev_dbg(dev, " OemAssyNumber: %s\n", string); 2696 dev_dbg(dev, " UartType: %d\n", 2697 edge_serial->manuf_descriptor.UartType); 2698 dev_dbg(dev, " IonPid: %d\n", 2699 edge_serial->manuf_descriptor.IonPid); 2700 dev_dbg(dev, " IonConfig: %d\n", 2701 edge_serial->manuf_descriptor.IonConfig); 2702 } 2703 } 2704 2705 2706 /**************************************************************************** 2707 * get_boot_desc 2708 * reads in the bootloader descriptor and stores it into the serial 2709 * structure. 2710 ****************************************************************************/ 2711 static void get_boot_desc(struct edgeport_serial *edge_serial) 2712 { 2713 struct device *dev = &edge_serial->serial->dev->dev; 2714 int response; 2715 2716 dev_dbg(dev, "getting boot descriptor\n"); 2717 2718 response = rom_read(edge_serial->serial, 2719 (EDGE_BOOT_DESC_ADDR & 0xffff0000) >> 16, 2720 (__u16)(EDGE_BOOT_DESC_ADDR & 0x0000ffff), 2721 EDGE_BOOT_DESC_LEN, 2722 (__u8 *)(&edge_serial->boot_descriptor)); 2723 2724 if (response < 0) { 2725 dev_err(dev, "error in getting boot descriptor: %d\n", 2726 response); 2727 } else { 2728 dev_dbg(dev, "**Boot Descriptor:\n"); 2729 dev_dbg(dev, " BootCodeLength: %d\n", 2730 le16_to_cpu(edge_serial->boot_descriptor.BootCodeLength)); 2731 dev_dbg(dev, " MajorVersion: %d\n", 2732 edge_serial->boot_descriptor.MajorVersion); 2733 dev_dbg(dev, " MinorVersion: %d\n", 2734 edge_serial->boot_descriptor.MinorVersion); 2735 dev_dbg(dev, " BuildNumber: %d\n", 2736 le16_to_cpu(edge_serial->boot_descriptor.BuildNumber)); 2737 dev_dbg(dev, " Capabilities: 0x%x\n", 2738 le16_to_cpu(edge_serial->boot_descriptor.Capabilities)); 2739 dev_dbg(dev, " UConfig0: %d\n", 2740 edge_serial->boot_descriptor.UConfig0); 2741 dev_dbg(dev, " UConfig1: %d\n", 2742 edge_serial->boot_descriptor.UConfig1); 2743 } 2744 } 2745 2746 2747 /**************************************************************************** 2748 * load_application_firmware 2749 * This is called to load the application firmware to the device 2750 ****************************************************************************/ 2751 static void load_application_firmware(struct edgeport_serial *edge_serial) 2752 { 2753 struct device *dev = &edge_serial->serial->dev->dev; 2754 const struct ihex_binrec *rec; 2755 const struct firmware *fw; 2756 const char *fw_name; 2757 const char *fw_info; 2758 int response; 2759 __u32 Operaddr; 2760 __u16 build; 2761 2762 switch (edge_serial->product_info.iDownloadFile) { 2763 case EDGE_DOWNLOAD_FILE_I930: 2764 fw_info = "downloading firmware version (930)"; 2765 fw_name = "edgeport/down.fw"; 2766 break; 2767 2768 case EDGE_DOWNLOAD_FILE_80251: 2769 fw_info = "downloading firmware version (80251)"; 2770 fw_name = "edgeport/down2.fw"; 2771 break; 2772 2773 case EDGE_DOWNLOAD_FILE_NONE: 2774 dev_dbg(dev, "No download file specified, skipping download\n"); 2775 return; 2776 2777 default: 2778 return; 2779 } 2780 2781 response = request_ihex_firmware(&fw, fw_name, 2782 &edge_serial->serial->dev->dev); 2783 if (response) { 2784 dev_err(dev, "Failed to load image \"%s\" err %d\n", 2785 fw_name, response); 2786 return; 2787 } 2788 2789 rec = (const struct ihex_binrec *)fw->data; 2790 build = (rec->data[2] << 8) | rec->data[3]; 2791 2792 dev_dbg(dev, "%s %d.%d.%d\n", fw_info, rec->data[0], rec->data[1], build); 2793 2794 edge_serial->product_info.FirmwareMajorVersion = rec->data[0]; 2795 edge_serial->product_info.FirmwareMinorVersion = rec->data[1]; 2796 edge_serial->product_info.FirmwareBuildNumber = cpu_to_le16(build); 2797 2798 for (rec = ihex_next_binrec(rec); rec; 2799 rec = ihex_next_binrec(rec)) { 2800 Operaddr = be32_to_cpu(rec->addr); 2801 response = sram_write(edge_serial->serial, 2802 Operaddr >> 16, 2803 Operaddr & 0xFFFF, 2804 be16_to_cpu(rec->len), 2805 &rec->data[0]); 2806 if (response < 0) { 2807 dev_err(&edge_serial->serial->dev->dev, 2808 "sram_write failed (%x, %x, %d)\n", 2809 Operaddr >> 16, Operaddr & 0xFFFF, 2810 be16_to_cpu(rec->len)); 2811 break; 2812 } 2813 } 2814 2815 dev_dbg(dev, "sending exec_dl_code\n"); 2816 response = usb_control_msg (edge_serial->serial->dev, 2817 usb_sndctrlpipe(edge_serial->serial->dev, 0), 2818 USB_REQUEST_ION_EXEC_DL_CODE, 2819 0x40, 0x4000, 0x0001, NULL, 0, 3000); 2820 2821 release_firmware(fw); 2822 } 2823 2824 2825 /**************************************************************************** 2826 * edge_startup 2827 ****************************************************************************/ 2828 static int edge_startup(struct usb_serial *serial) 2829 { 2830 struct edgeport_serial *edge_serial; 2831 struct usb_device *dev; 2832 struct device *ddev = &serial->dev->dev; 2833 int i; 2834 int response; 2835 bool interrupt_in_found; 2836 bool bulk_in_found; 2837 bool bulk_out_found; 2838 static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, 2839 EDGE_COMPATIBILITY_MASK1, 2840 EDGE_COMPATIBILITY_MASK2 }; 2841 2842 dev = serial->dev; 2843 2844 /* create our private serial structure */ 2845 edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); 2846 if (!edge_serial) 2847 return -ENOMEM; 2848 2849 spin_lock_init(&edge_serial->es_lock); 2850 edge_serial->serial = serial; 2851 usb_set_serial_data(serial, edge_serial); 2852 2853 /* get the name for the device from the device */ 2854 i = usb_string(dev, dev->descriptor.iManufacturer, 2855 &edge_serial->name[0], MAX_NAME_LEN+1); 2856 if (i < 0) 2857 i = 0; 2858 edge_serial->name[i++] = ' '; 2859 usb_string(dev, dev->descriptor.iProduct, 2860 &edge_serial->name[i], MAX_NAME_LEN+2 - i); 2861 2862 dev_info(&serial->dev->dev, "%s detected\n", edge_serial->name); 2863 2864 /* Read the epic descriptor */ 2865 if (get_epic_descriptor(edge_serial) < 0) { 2866 /* memcpy descriptor to Supports structures */ 2867 memcpy(&edge_serial->epic_descriptor.Supports, descriptor, 2868 sizeof(struct edge_compatibility_bits)); 2869 2870 /* get the manufacturing descriptor for this device */ 2871 get_manufacturing_desc(edge_serial); 2872 2873 /* get the boot descriptor */ 2874 get_boot_desc(edge_serial); 2875 2876 get_product_info(edge_serial); 2877 } 2878 2879 /* set the number of ports from the manufacturing description */ 2880 /* serial->num_ports = serial->product_info.NumPorts; */ 2881 if ((!edge_serial->is_epic) && 2882 (edge_serial->product_info.NumPorts != serial->num_ports)) { 2883 dev_warn(ddev, 2884 "Device Reported %d serial ports vs. core thinking we have %d ports, email greg@kroah.com this information.\n", 2885 edge_serial->product_info.NumPorts, 2886 serial->num_ports); 2887 } 2888 2889 dev_dbg(ddev, "%s - time 1 %ld\n", __func__, jiffies); 2890 2891 /* If not an EPiC device */ 2892 if (!edge_serial->is_epic) { 2893 /* now load the application firmware into this device */ 2894 load_application_firmware(edge_serial); 2895 2896 dev_dbg(ddev, "%s - time 2 %ld\n", __func__, jiffies); 2897 2898 /* Check current Edgeport EEPROM and update if necessary */ 2899 update_edgeport_E2PROM(edge_serial); 2900 2901 dev_dbg(ddev, "%s - time 3 %ld\n", __func__, jiffies); 2902 2903 /* set the configuration to use #1 */ 2904 /* dev_dbg(ddev, "set_configuration 1\n"); */ 2905 /* usb_set_configuration (dev, 1); */ 2906 } 2907 dev_dbg(ddev, " FirmwareMajorVersion %d.%d.%d\n", 2908 edge_serial->product_info.FirmwareMajorVersion, 2909 edge_serial->product_info.FirmwareMinorVersion, 2910 le16_to_cpu(edge_serial->product_info.FirmwareBuildNumber)); 2911 2912 /* we set up the pointers to the endpoints in the edge_open function, 2913 * as the structures aren't created yet. */ 2914 2915 response = 0; 2916 2917 if (edge_serial->is_epic) { 2918 /* EPIC thing, set up our interrupt polling now and our read 2919 * urb, so that the device knows it really is connected. */ 2920 interrupt_in_found = bulk_in_found = bulk_out_found = false; 2921 for (i = 0; i < serial->interface->altsetting[0] 2922 .desc.bNumEndpoints; ++i) { 2923 struct usb_endpoint_descriptor *endpoint; 2924 int buffer_size; 2925 2926 endpoint = &serial->interface->altsetting[0]. 2927 endpoint[i].desc; 2928 buffer_size = usb_endpoint_maxp(endpoint); 2929 if (!interrupt_in_found && 2930 (usb_endpoint_is_int_in(endpoint))) { 2931 /* we found a interrupt in endpoint */ 2932 dev_dbg(ddev, "found interrupt in\n"); 2933 2934 /* not set up yet, so do it now */ 2935 edge_serial->interrupt_read_urb = 2936 usb_alloc_urb(0, GFP_KERNEL); 2937 if (!edge_serial->interrupt_read_urb) { 2938 response = -ENOMEM; 2939 break; 2940 } 2941 2942 edge_serial->interrupt_in_buffer = 2943 kmalloc(buffer_size, GFP_KERNEL); 2944 if (!edge_serial->interrupt_in_buffer) { 2945 response = -ENOMEM; 2946 break; 2947 } 2948 edge_serial->interrupt_in_endpoint = 2949 endpoint->bEndpointAddress; 2950 2951 /* set up our interrupt urb */ 2952 usb_fill_int_urb( 2953 edge_serial->interrupt_read_urb, 2954 dev, 2955 usb_rcvintpipe(dev, 2956 endpoint->bEndpointAddress), 2957 edge_serial->interrupt_in_buffer, 2958 buffer_size, 2959 edge_interrupt_callback, 2960 edge_serial, 2961 endpoint->bInterval); 2962 2963 interrupt_in_found = true; 2964 } 2965 2966 if (!bulk_in_found && 2967 (usb_endpoint_is_bulk_in(endpoint))) { 2968 /* we found a bulk in endpoint */ 2969 dev_dbg(ddev, "found bulk in\n"); 2970 2971 /* not set up yet, so do it now */ 2972 edge_serial->read_urb = 2973 usb_alloc_urb(0, GFP_KERNEL); 2974 if (!edge_serial->read_urb) { 2975 response = -ENOMEM; 2976 break; 2977 } 2978 2979 edge_serial->bulk_in_buffer = 2980 kmalloc(buffer_size, GFP_KERNEL); 2981 if (!edge_serial->bulk_in_buffer) { 2982 response = -ENOMEM; 2983 break; 2984 } 2985 edge_serial->bulk_in_endpoint = 2986 endpoint->bEndpointAddress; 2987 2988 /* set up our bulk in urb */ 2989 usb_fill_bulk_urb(edge_serial->read_urb, dev, 2990 usb_rcvbulkpipe(dev, 2991 endpoint->bEndpointAddress), 2992 edge_serial->bulk_in_buffer, 2993 usb_endpoint_maxp(endpoint), 2994 edge_bulk_in_callback, 2995 edge_serial); 2996 bulk_in_found = true; 2997 } 2998 2999 if (!bulk_out_found && 3000 (usb_endpoint_is_bulk_out(endpoint))) { 3001 /* we found a bulk out endpoint */ 3002 dev_dbg(ddev, "found bulk out\n"); 3003 edge_serial->bulk_out_endpoint = 3004 endpoint->bEndpointAddress; 3005 bulk_out_found = true; 3006 } 3007 } 3008 3009 if (response || !interrupt_in_found || !bulk_in_found || 3010 !bulk_out_found) { 3011 if (!response) { 3012 dev_err(ddev, "expected endpoints not found\n"); 3013 response = -ENODEV; 3014 } 3015 3016 usb_free_urb(edge_serial->interrupt_read_urb); 3017 kfree(edge_serial->interrupt_in_buffer); 3018 3019 usb_free_urb(edge_serial->read_urb); 3020 kfree(edge_serial->bulk_in_buffer); 3021 3022 kfree(edge_serial); 3023 3024 return response; 3025 } 3026 3027 /* start interrupt read for this edgeport this interrupt will 3028 * continue as long as the edgeport is connected */ 3029 response = usb_submit_urb(edge_serial->interrupt_read_urb, 3030 GFP_KERNEL); 3031 if (response) 3032 dev_err(ddev, "%s - Error %d submitting control urb\n", 3033 __func__, response); 3034 } 3035 return response; 3036 } 3037 3038 3039 /**************************************************************************** 3040 * edge_disconnect 3041 * This function is called whenever the device is removed from the usb bus. 3042 ****************************************************************************/ 3043 static void edge_disconnect(struct usb_serial *serial) 3044 { 3045 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3046 3047 if (edge_serial->is_epic) { 3048 usb_kill_urb(edge_serial->interrupt_read_urb); 3049 usb_kill_urb(edge_serial->read_urb); 3050 } 3051 } 3052 3053 3054 /**************************************************************************** 3055 * edge_release 3056 * This function is called when the device structure is deallocated. 3057 ****************************************************************************/ 3058 static void edge_release(struct usb_serial *serial) 3059 { 3060 struct edgeport_serial *edge_serial = usb_get_serial_data(serial); 3061 3062 if (edge_serial->is_epic) { 3063 usb_kill_urb(edge_serial->interrupt_read_urb); 3064 usb_free_urb(edge_serial->interrupt_read_urb); 3065 kfree(edge_serial->interrupt_in_buffer); 3066 3067 usb_kill_urb(edge_serial->read_urb); 3068 usb_free_urb(edge_serial->read_urb); 3069 kfree(edge_serial->bulk_in_buffer); 3070 } 3071 3072 kfree(edge_serial); 3073 } 3074 3075 static int edge_port_probe(struct usb_serial_port *port) 3076 { 3077 struct edgeport_port *edge_port; 3078 3079 edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL); 3080 if (!edge_port) 3081 return -ENOMEM; 3082 3083 spin_lock_init(&edge_port->ep_lock); 3084 edge_port->port = port; 3085 3086 usb_set_serial_port_data(port, edge_port); 3087 3088 return 0; 3089 } 3090 3091 static int edge_port_remove(struct usb_serial_port *port) 3092 { 3093 struct edgeport_port *edge_port; 3094 3095 edge_port = usb_get_serial_port_data(port); 3096 kfree(edge_port); 3097 3098 return 0; 3099 } 3100 3101 static struct usb_serial_driver edgeport_2port_device = { 3102 .driver = { 3103 .owner = THIS_MODULE, 3104 .name = "edgeport_2", 3105 }, 3106 .description = "Edgeport 2 port adapter", 3107 .id_table = edgeport_2port_id_table, 3108 .num_ports = 2, 3109 .num_bulk_in = 1, 3110 .num_bulk_out = 1, 3111 .num_interrupt_in = 1, 3112 .open = edge_open, 3113 .close = edge_close, 3114 .throttle = edge_throttle, 3115 .unthrottle = edge_unthrottle, 3116 .attach = edge_startup, 3117 .disconnect = edge_disconnect, 3118 .release = edge_release, 3119 .port_probe = edge_port_probe, 3120 .port_remove = edge_port_remove, 3121 .ioctl = edge_ioctl, 3122 .set_termios = edge_set_termios, 3123 .tiocmget = edge_tiocmget, 3124 .tiocmset = edge_tiocmset, 3125 .tiocmiwait = usb_serial_generic_tiocmiwait, 3126 .get_icount = usb_serial_generic_get_icount, 3127 .write = edge_write, 3128 .write_room = edge_write_room, 3129 .chars_in_buffer = edge_chars_in_buffer, 3130 .break_ctl = edge_break, 3131 .read_int_callback = edge_interrupt_callback, 3132 .read_bulk_callback = edge_bulk_in_callback, 3133 .write_bulk_callback = edge_bulk_out_data_callback, 3134 }; 3135 3136 static struct usb_serial_driver edgeport_4port_device = { 3137 .driver = { 3138 .owner = THIS_MODULE, 3139 .name = "edgeport_4", 3140 }, 3141 .description = "Edgeport 4 port adapter", 3142 .id_table = edgeport_4port_id_table, 3143 .num_ports = 4, 3144 .num_bulk_in = 1, 3145 .num_bulk_out = 1, 3146 .num_interrupt_in = 1, 3147 .open = edge_open, 3148 .close = edge_close, 3149 .throttle = edge_throttle, 3150 .unthrottle = edge_unthrottle, 3151 .attach = edge_startup, 3152 .disconnect = edge_disconnect, 3153 .release = edge_release, 3154 .port_probe = edge_port_probe, 3155 .port_remove = edge_port_remove, 3156 .ioctl = edge_ioctl, 3157 .set_termios = edge_set_termios, 3158 .tiocmget = edge_tiocmget, 3159 .tiocmset = edge_tiocmset, 3160 .tiocmiwait = usb_serial_generic_tiocmiwait, 3161 .get_icount = usb_serial_generic_get_icount, 3162 .write = edge_write, 3163 .write_room = edge_write_room, 3164 .chars_in_buffer = edge_chars_in_buffer, 3165 .break_ctl = edge_break, 3166 .read_int_callback = edge_interrupt_callback, 3167 .read_bulk_callback = edge_bulk_in_callback, 3168 .write_bulk_callback = edge_bulk_out_data_callback, 3169 }; 3170 3171 static struct usb_serial_driver edgeport_8port_device = { 3172 .driver = { 3173 .owner = THIS_MODULE, 3174 .name = "edgeport_8", 3175 }, 3176 .description = "Edgeport 8 port adapter", 3177 .id_table = edgeport_8port_id_table, 3178 .num_ports = 8, 3179 .num_bulk_in = 1, 3180 .num_bulk_out = 1, 3181 .num_interrupt_in = 1, 3182 .open = edge_open, 3183 .close = edge_close, 3184 .throttle = edge_throttle, 3185 .unthrottle = edge_unthrottle, 3186 .attach = edge_startup, 3187 .disconnect = edge_disconnect, 3188 .release = edge_release, 3189 .port_probe = edge_port_probe, 3190 .port_remove = edge_port_remove, 3191 .ioctl = edge_ioctl, 3192 .set_termios = edge_set_termios, 3193 .tiocmget = edge_tiocmget, 3194 .tiocmset = edge_tiocmset, 3195 .tiocmiwait = usb_serial_generic_tiocmiwait, 3196 .get_icount = usb_serial_generic_get_icount, 3197 .write = edge_write, 3198 .write_room = edge_write_room, 3199 .chars_in_buffer = edge_chars_in_buffer, 3200 .break_ctl = edge_break, 3201 .read_int_callback = edge_interrupt_callback, 3202 .read_bulk_callback = edge_bulk_in_callback, 3203 .write_bulk_callback = edge_bulk_out_data_callback, 3204 }; 3205 3206 static struct usb_serial_driver epic_device = { 3207 .driver = { 3208 .owner = THIS_MODULE, 3209 .name = "epic", 3210 }, 3211 .description = "EPiC device", 3212 .id_table = Epic_port_id_table, 3213 .num_ports = 1, 3214 .num_bulk_in = 1, 3215 .num_bulk_out = 1, 3216 .num_interrupt_in = 1, 3217 .open = edge_open, 3218 .close = edge_close, 3219 .throttle = edge_throttle, 3220 .unthrottle = edge_unthrottle, 3221 .attach = edge_startup, 3222 .disconnect = edge_disconnect, 3223 .release = edge_release, 3224 .port_probe = edge_port_probe, 3225 .port_remove = edge_port_remove, 3226 .ioctl = edge_ioctl, 3227 .set_termios = edge_set_termios, 3228 .tiocmget = edge_tiocmget, 3229 .tiocmset = edge_tiocmset, 3230 .tiocmiwait = usb_serial_generic_tiocmiwait, 3231 .get_icount = usb_serial_generic_get_icount, 3232 .write = edge_write, 3233 .write_room = edge_write_room, 3234 .chars_in_buffer = edge_chars_in_buffer, 3235 .break_ctl = edge_break, 3236 .read_int_callback = edge_interrupt_callback, 3237 .read_bulk_callback = edge_bulk_in_callback, 3238 .write_bulk_callback = edge_bulk_out_data_callback, 3239 }; 3240 3241 static struct usb_serial_driver * const serial_drivers[] = { 3242 &edgeport_2port_device, &edgeport_4port_device, 3243 &edgeport_8port_device, &epic_device, NULL 3244 }; 3245 3246 module_usb_serial_driver(serial_drivers, id_table_combined); 3247 3248 MODULE_AUTHOR(DRIVER_AUTHOR); 3249 MODULE_DESCRIPTION(DRIVER_DESC); 3250 MODULE_LICENSE("GPL"); 3251 MODULE_FIRMWARE("edgeport/boot.fw"); 3252 MODULE_FIRMWARE("edgeport/boot2.fw"); 3253 MODULE_FIRMWARE("edgeport/down.fw"); 3254 MODULE_FIRMWARE("edgeport/down2.fw"); 3255