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