usb/core/core.c

   1 /*
   2  * Copyright (c) 2006, Benedikt Sauter <sauter@ixbat.de>
   3  * All rights reserved.
   4  *
   5  * Short descripton of file:
   6  *
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  *       * Redistributions of source code must retain the above copyright
  13  *               notice, this list of conditions and the following disclaimer.
  14  *       * Redistributions in binary form must reproduce the above
  15  *               copyright notice, this list of conditions and the following
  16  *               disclaimer in the documentation and/or other materials provided
  17  *               with the distribution.
  18  *       * Neither the name of the FH Augsburg nor the names of its
  19  *               contributors may be used to endorse or promote products derived
  20  *               from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 //#include <stdlib.h>
  36 #include "core.h"
  37 #include "../host/host.h"
  38 #include "usb.h"
  39 #include "../usbspec/usb11spec.h"
  40 #include "../lib/list.h"
  41 #include "../../malloc.h"
  42 #include "../../bootmii_ppc.h" //printf
  43 #include "../../string.h" //memset
  44
  45 /**
  46  * Initialize USB stack.
  47  */
  48 void usb_init(u32 reg)
  49 {
  50         core.drivers = list_create();
  51         core.devices = list_create();
  52         core.nextaddress = 1;
  53         hcdi_init(reg);
  54 }
  55
  56 /**
  57  * Get next free usb device address.
  58  */
  59 u8 usb_next_address()
  60 {
  61         u8 addr = core.nextaddress;
  62         core.nextaddress++;
  63         return addr;
  64 }
  65
  66
  67 /**
  68  * Call this function periodically for
  69  * control and transfer management.
  70  */
  71 void usb_periodic()
  72 {
  73         // call ever registered driver
  74         struct usb_driver *drv;
  75         struct element *iterator = core.drivers->head;
  76         while (iterator != NULL) {
  77                 drv = (struct usb_driver *) iterator->data;
  78                 drv->check();
  79                 iterator = iterator->next;
  80         }
  81 }
  82
  83
  84 /**
  85  * Enumerate new device and create data structures
  86  * for the core. usb_add_device expected that
  87  * the device answers to address zero.
  88  */
  89 struct usb_device *usb_add_device(u8 lowspeed, u32 reg)
  90 {
  91         struct usb_device *dev = (struct usb_device *) malloc(sizeof(struct usb_device));
  92         dev->conf = (struct usb_conf *) malloc(sizeof(struct usb_conf));
  93         dev->address = 0;
  94         dev->fullspeed = lowspeed ? 0 : 1;
  95         /* send at first time only 8 bytes for lowspeed devices
  96          * 64 bytes for fullspeed
  97          */
  98         dev->bMaxPacketSize0 = lowspeed ? 8 : 64;
  99         dev->ohci = reg;
 100
 101         dev->epSize[0] = 64;
 102         dev->epSize[1] = 64;
 103         dev->epSize[2] = 64;
 104
 105         dev->epTogl[0] = 0;
 106         dev->epTogl[1] = 0;
 107         dev->epTogl[2] = 0;
 108
 109         s8 ret;
 110         ret = usb_get_desc_dev_simple(dev);
 111         if(ret < 0) {
 112                 return (void*) -1;
 113         }
 114
 115 //#define WTF
 116 #ifdef WTF
 117         printf("lololololool PADDING WTF :O lolololololo \n");
 118         printf("lololololool PADDING WTF :O lolololololo \n");
 119         printf("lololololool PADDING WTF :O lolololololo \n");
 120         printf("lololololool PADDING WTF :O lolololololo \n");
 121         printf("lololololool PADDING WTF :O lolololololo \n");
 122         printf("lololololool PADING WTF :O lolololololo \n");
 123         printf("loolololool PADDING WTF :O lolololololo \n");
 124         printf("lololololool PADDING WTF :O lolololololo \n");
 125         printf("lololololool PADDNG WTF :O lolololololo \n");
 126         printf("lololololool PADDING WTF :O lolololololo \n");
 127         printf("lololololool PADDINGWTF :O lolololololo \n");
 128         printf("lololololool PADDING WTF :O lolololololo \n");
 129         printf("lololololool PADDING WTF :Ololololololo \n");
 130         printf("lololololool PADDING WTF :O lolololololo \n");
 131         printf("lololololool PADDING WTF :O llololololo \n");
 132         printf("lololololool PADDING WTF :O loololololo \n");
 133         printf("lololololool PADDING WTF :O lolololololo \n");
 134         printf("lololololool PADDING WTF :O loloooloo \n");
 135         printf("lololololool PADDING WTF :O lolololololo \n");
 136         printf("lololololool PADDING WTF :O lolololololo \n");
 137         printf("lololololool PADDING WTF :O lolololoolo \n");
 138         printf("lololololool PADDING WTF :O lololooolo \n");
 139         printf("lololololool PADDING WTF :O loloolololo \n");
 140         printf("lololol PADDING WTF :O lolololololo \n");
 141         printf("lololololool PADDING WTF :O lolololololo \n");
 142         printf("lolololool PADDING WTF :O lololoololo \n");
 143         printf("lololololool PADDING WTF :O lolololololo \n");
 144         printf("lolololool PADDING WTF :O lolololololo \n");
 145         printf("lololololool PADDING WTF :O lolololololo \n");
 146         printf("lollllool PADDING WTF :O lolololololo \n");
 147         printf("lololololool PADDING WTF :O lolololololo \n");
 148         printf("lololololool PADDING WTF :O lolololololo \n");
 149         printf("lololololool PADDING WTF :O lolololololo \n");
 150         printf("lololololool PADDING WTF :O lolololololo \n");
 151         printf("lololololool PADDING WTF :O lolololololo \n");
 152         printf("lololololool PADDING WTF :O lolololololo \n");
 153         printf("lololololool PADDING WTF :O loloolololo \n");
 154         printf("lololololool PADDING WTF lololololo \n");
 155         printf("lololololool PADDING WTF :O lolololololo \n");
 156         printf("lololololool PADDING WTF :O lolololololo \n");
 157 #endif
 158         u8 address = usb_next_address();
 159         ret = usb_set_address(dev, address);
 160         dev->address = address;
 161         printf("set address to %d\n", dev->address);
 162
 163         /* get device descriptor&co */
 164         ret = usb_get_desc_dev(dev);
 165         if(ret < 0)
 166                 return (void*) -1;
 167
 168         /* print device info */
 169         lsusb(dev);
 170
 171         //HID only!
 172 #define GET_PROTOCOL 0x03
 173 #define SET_PROTOCOL 0x0b
 174 #define GETit 0xa1
 175 #define SETit 0x21
 176
 177
 178         u8 buf[255];
 179 #if 1
 180         /* select configuration */
 181         wait_ms(500);
 182         ret = usb_set_configuration(dev, 1);
 183         printf("=============\nusb_set_configuration(ret: %d): %d\n", ret, dev->conf->bConfigurationValue);
 184         wait_ms(500);
 185         printf("=============\nusb_get_configuration: %d (should be 1 here)\n", usb_get_configuration(dev));
 186 #endif
 187
 188 #if 0
 189         memset(buf, 0, 0xff);
 190         usb_control_msg(dev, 0x81, GET_DESCRIPTOR, 0x2200, 0x0, 0x41, buf, 0);
 191         printf("wtf request\n");
 192         hexdump((void*)buf, 0x41);
 193 #endif
 194
 195 #if 0
 196         /* set protocol */
 197         /* see p48 in HID spec */
 198         memset(buf, 0, 8);
 199         usb_control_msg(dev, SETit, SET_PROTOCOL, 0, 0, 0, buf, 0);
 200         printf("=============\nhid_set_protocol %d\n", 0);
 201         hexdump((void*)buf, 8);
 202 #endif
 203 #if 0
 204         memset(buf, 0, 8);
 205         usb_control_msg(dev, GETit, GET_PROTOCOL, 0, 0, 4, buf, 0);
 206         printf("=============\nusb_get_interface: %d\n", buf[0]);
 207         hexdump((void*)buf, 8);
 208 #endif
 209
 210 #if 0
 211         /* I just don't know why on some devices
 212          * {s,g}et_{configuration,interface} won't work.
 213          * may the setter works and getter are poorly implemented?
 214          * however, I try here some interrupt inputs, assuming
 215          * the setters are fine*/
 216
 217         memset(buf, 0, 8);
 218         s8 epnum = dev->conf->intf->endp->bEndpointAddress & 0xf;
 219         printf("epnum: 0x%04X\n", epnum);
 220         u8 muh = 10;
 221         while(muh--) {
 222                 (void) usb_interrupt_read(dev, epnum, buf, 8, 0);
 223                 printf("============\nusb_interrupt_read:\n");
 224                 hexdump((void*)buf, 8);
 225                 udelay(2000000);
 226         }
 227 #endif
 228
 229 #if 0
 230         /* add device to device list */
 231         element *tmp = (element *) malloc(sizeof(element));
 232         tmp->data = (void *) dev;
 233         list_add_tail(core.devices, tmp);
 234
 235         usb_probe_driver();
 236 #endif
 237
 238         return dev;
 239 }
 240
 241 void lsusb(struct usb_device *dev)
 242 {
 243         printf("=== Device Descriptor === \n");
 244         printf("bLength 0x%02X\n", dev->bLength);
 245         printf("bDescriptorType 0x%02X\n", dev->bDeviceClass);
 246         printf("bcdUSB 0x%04X\n", dev->bcdUSB);
 247         printf("bDeviceClass 0x%02X\n", dev->bDeviceClass);
 248         printf("bDeviceSubClass 0x%02X\n", dev->bDeviceSubClass);
 249         printf("bDeviceProtocoll 0x%02X\n", dev->bDeviceProtocoll);
 250         printf("bMaxPacketSize 0x%02X\n", dev->bMaxPacketSize0);
 251         printf("idVendor 0x%04X\n", dev->idVendor);
 252         printf("idProduct 0x%04X\n", dev->idProduct);
 253         printf("bcdDevice 0x%04X\n", dev->bcdDevice);
 254         printf("iManufacturer(0x%02X): \"%s\"\n", dev->iManufacturer, dev->iManufacturer ? usb_get_string_simple(dev, dev->iManufacturer) : "no String");
 255         printf("iProduct(0x%02X): \"%s\"\n", dev->iProduct, dev->iProduct ? usb_get_string_simple(dev, dev->iProduct) : "no String");
 256         printf("iSerialNumber(0x%02X): \"%s\"\n", dev->iSerialNumber, dev->iSerialNumber ? usb_get_string_simple(dev, dev->iSerialNumber) : "no String");
 257         printf("bNumConfigurations 0x%02X\n", dev->bNumConfigurations);
 258
 259         u8 c, i, e;
 260         struct usb_conf *conf = dev->conf;
 261         for(c=0; c <= dev->bNumConfigurations; c++) {
 262                 printf("  === Configuration Descriptor %d ===\n", c+1);
 263                 printf("  bLength 0x%02X\n", conf->bLength);
 264                 printf("  bDescriptorType 0x%02X\n", conf->bDescriptorType);
 265                 printf("  wTotalLength 0x%04X\n", conf->wTotalLength);
 266                 printf("  bNumInterfaces 0x%02X\n", conf->bNumInterfaces);
 267                 printf("  bConfigurationValue 0x%02X\n", conf->bConfigurationValue);
 268                 printf("  iConfiguration (0x%02X): \"%s\"\n", conf->iConfiguration, conf->iConfiguration ? usb_get_string_simple(dev, conf->iConfiguration) : "no String");
 269                 printf("  bmAttributes 0x%02X\n", conf->bmAttributes);
 270                 printf("  bMaxPower 0x%02X\n", conf->bMaxPower);
 271
 272                 struct usb_intf *ifs = conf->intf;
 273                 for(i=1; i <= conf->bNumInterfaces; i++) {
 274                         printf("    === Interface Descriptor %d ===\n", i);
 275                         printf("    bLength 0x%02X\n", ifs->bLength);
 276                         printf("    bDescriptorType 0x%02X\n", ifs->bDescriptorType);
 277                         printf("    bInterfaceNumber 0x%02X\n", ifs->bInterfaceNumber);
 278                         printf("    bAlternateSetting 0x%02X\n", ifs->bAlternateSetting);
 279                         printf("    bNumEndpoints 0x%02X\n", ifs->bNumEndpoints);
 280                         printf("    bInterfaceClass 0x%02X\n", ifs->bInterfaceClass);
 281                         printf("    bInterfaceSubClass 0x%02X\n", ifs->bInterfaceSubClass);
 282                         printf("    bInterfaceProtocol 0x%02X\n", ifs->bInterfaceProtocol);
 283                         printf("    iInterface (0x%02X): \"%s\"\n", ifs->iInterface, ifs->iInterface ? usb_get_string_simple(dev, ifs->iInterface) : "no String");
 284
 285                         struct usb_endp *ed = ifs->endp;
 286                         for(e=1; e <= ifs->bNumEndpoints; e++) {
 287                                 printf("      === Endpoint Descriptor %d ===\n", e);
 288                                 printf("      bLength 0x%02X\n", ed->bLength);
 289                                 printf("      bDescriptorType 0x%02X\n", ed->bDescriptorType);
 290                                 printf("      bEndpointAddress 0x%02X\n", ed->bEndpointAddress);
 291                                 printf("      bmAttributes 0x%02X\n", ed->bmAttributes);
 292                                 printf("      wMaxPacketSize 0x%02X\n", ed->wMaxPacketSize);
 293                                 printf("      bInterval 0x%02X\n", ed->bInterval);
 294
 295                                 ed = ed->next;
 296                         } //endpoint
 297
 298                         ifs = ifs->next;
 299                 } //interface
 300
 301                 conf = conf->next;
 302         } //configuration
 303 }
 304
 305 /**
 306  * Find currently detached device and remove
 307  * data structures
 308  */
 309 u8 usb_remove_device(struct usb_device * dev)
 310 {
 311         // FIXME!!!! dieser quatsch ist nur temporaer
 312         free(core.devices->head);
 313         free(core.devices);
 314         core.devices = list_create();
 315         return 1;
 316 }
 317
 318 /**
 319  * Register new driver at usb stack.
 320  */
 321 u8 usb_register_driver(struct usb_driver * dev)
 322 {
 323         /* add driver to driver list */
 324         struct element *tmp = (struct element *) malloc(sizeof(struct element));
 325         tmp->data = (void *) dev;
 326         tmp->next = NULL;
 327         list_add_tail(core.drivers, tmp);
 328
 329
 330         /**
 331          * first check to find a suitable device
 332          * (root hub drivers need this call here)
 333          */
 334         dev->probe();
 335
 336         return 1;
 337 }
 338
 339
 340 /**
 341  * Call every probe function from every registered
 342  * driver, to check if there is a valid driver
 343  * for the new device.
 344  */
 345 void usb_probe_driver()
 346 {
 347         // call ever registered driver
 348         struct usb_driver *drv;
 349         struct element *iterator = core.drivers->head;
 350         while (iterator != NULL) {
 351                 drv = (struct usb_driver *) iterator->data;
 352                 drv->probe();
 353                 iterator = iterator->next;
 354         }
 355 }
 356
 357 /**
 358  * Not implemented.
 359  */
 360 struct usb_irp *usb_get_irp()
 361 {
 362         return 0;
 363 }
 364
 365 /**
 366  * Not implemented.
 367  */
 368 u8 usb_remove_irp(struct usb_irp *irp)
 369 {
 370
 371         return 1;
 372 }
 373
 374 /**
 375  * Takes usb_irp and split it into
 376  * several usb packeges (SETUP,IN,OUT)
 377  * In the usbstack they are transported with the
 378  * usb_transfer_descriptor data structure.
 379  */
 380 u16 usb_submit_irp(struct usb_irp *irp)
 381 {
 382         struct usb_transfer_descriptor *td;
 383         u8 runloop = 1;
 384         u16 restlength = irp->len;
 385         u8 *td_buf_ptr = irp->buffer;
 386         u8 mybuf[64];
 387
 388         u8 togl = irp->dev->epTogl[(irp->endpoint & 0x7F)];
 389
 390         switch (irp->type) {
 391         case USB_CTRL:
 392                 /* alle requests mit dem gleichen algorithmus zerteilen
 393                  * das einzige ist der spezielle get_Device_descriptor request
 394                  * bei dem eine laenge von 64 angegeben ist.
 395                  * wenn man an adresse 0 einen get_device_desciptor schickt
 396                  * dann reichen die ersten 8 byte.
 397                  */
 398
 399                 /***************** Setup Stage ***********************/
 400                 td = usb_create_transfer_descriptor(irp);
 401                 td->pid = USB_PID_SETUP;
 402                 td->buffer = irp->buffer;
 403
 404                 /* control message are always 8 bytes */
 405                 td->actlen = 8;
 406
 407                 togl = 0;
 408                 /* start with data0 */
 409                 td->togl = togl;
 410                 togl = togl ? 0 : 1;
 411
 412                 /**** send token ****/
 413                 hcdi_enqueue(td, irp->dev->ohci);
 414
 415                 /***************** Data Stage ***********************/
 416                 /**
 417                  * You can see at bit 7 of bmRequestType if this stage is used,
 418                  * default requests are always 8 byte greate, from
 419                  * host to device. Stage 3 is only neccessary if the request
 420                  * expected datas from the device.
 421                  * bit7 - 1 = from device to host -> yes we need data stage
 422                  * bit7 - 0 = from host to device -> no send zero packet
 423                  *
 424                  * nach einem setup token kann nur ein IN token in stage 3 folgen
 425                  * nie aber ein OUT. Ein Zero OUT wird nur als Bestaetigung benoetigt.
 426                  *
 427                  *
 428                  * bit7 = 1
 429                  *      Device to Host
 430                  *      - es kommen noch Daten mit PID_IN an
 431                  *      - host beendet mit PID_OUT DATA1 Zero
 432                  * bit7 - 0
 433                  *      Host zu Device (wie set address)
 434                  *      - device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
 435                  */
 436                 memcpy(mybuf, irp->buffer, td->actlen);
 437                 usb_device_request *setup = (usb_device_request *) mybuf;
 438                 u8 bmRequestType = setup->bmRequestType;
 439                 free(td);
 440
 441                 /* check bit 7 of bmRequestType */
 442                 if (bmRequestType & 0x80) {
 443                         /* schleife die die tds generiert */
 444                         while (runloop && (restlength > 0)) {
 445                                 td = usb_create_transfer_descriptor(irp);
 446                                 td->actlen = irp->epsize;
 447                                 /* stop loop if all bytes are send */
 448                                 if (restlength < irp->epsize) {
 449                                         runloop = 0;
 450                                         td->actlen = restlength;
 451                                 }
 452
 453                                 td->buffer = td_buf_ptr;
 454                                 /* move pointer for next packet */
 455                                 td_buf_ptr += irp->epsize;
 456
 457                                 td->pid = USB_PID_IN;
 458                                 td->togl = togl;
 459                                 togl = togl ? 0 : 1;
 460
 461                                 /* wenn device descriptor von adresse 0 angefragt wird werden nur
 462                                  * die ersten 8 byte abgefragt
 463                                  */
 464                                 if (setup->bRequest == GET_DESCRIPTOR && (setup->wValue & 0xff) == 1
 465                                                 && td->devaddress == 0) {
 466                                         /* stop loop */
 467                                         runloop = 0;
 468                                 }
 469
 470                                 /**** send token ****/
 471                                 hcdi_enqueue(td, irp->dev->ohci);
 472
 473                                 /* pruefe ob noch weitere Pakete vom Device abgeholt werden muessen */
 474                                 restlength = restlength - irp->epsize;
 475                                 free(td);
 476                         }
 477                 }
 478
 479
 480                 /***************** Status Stage ***********************/
 481                 /* Zero packet for end */
 482                 td = usb_create_transfer_descriptor(irp);
 483                 td->togl = 1;                                                           /* zero data packet = always DATA1 packet */
 484                 td->actlen = 0;
 485                 td->buffer = NULL;
 486
 487                 /**
 488                  * bit7 = 1, host beendet mit PID_OUT DATA1 Zero
 489                  * bit7 = 0, device sendet ein PID_IN DATA1 Zero Packet als bestaetigung
 490                  */
 491                 /* check bit 7 of bmRequestType */
 492                 if (bmRequestType & 0x80) {
 493                         td->pid = USB_PID_OUT;
 494                 } else {
 495                         td->pid = USB_PID_IN;
 496                 }
 497                 /**** send token ****/
 498                 hcdi_enqueue(td, irp->dev->ohci);
 499                 free(td);
 500                 break;
 501
 502         case USB_BULK:
 503                 //u8 runloop=1;
 504                 //u16 restlength = irp->len;
 505                 //char * td_buf_ptr=irp->buffer;
 506
 507                 /* schleife die die tds generiert */
 508                 while (runloop) {
 509                         td = usb_create_transfer_descriptor(irp);
 510                         td->endpoint = td->endpoint & 0x7F;                             /* clear direction bit */
 511
 512                         /* max packet size for given endpoint */
 513                         td->actlen = irp->epsize;
 514
 515                         /* Generate In Packet  */
 516                         if (irp->endpoint & 0x80)
 517                                 td->pid = USB_PID_IN;
 518                         else
 519                                 /* Generate Out Packet */
 520                                 td->pid = USB_PID_OUT;
 521
 522                         /* stop loop if all bytes are send */
 523                         if (restlength <= irp->epsize) {
 524                                 runloop = 0;
 525                                 td->actlen = restlength;
 526                         }
 527
 528                         td->buffer = td_buf_ptr;
 529                         /* move pointer for next packet */
 530                         td_buf_ptr = td_buf_ptr + irp->epsize;
 531
 532                         td->togl = togl;
 533                         togl = togl ? 0 : 1;
 534                                 /**** send token ****/
 535                         hcdi_enqueue(td, irp->dev->ohci);
 536                         free(td);
 537                 }
 538                 /* next togl */
 539                 //if(td->pid == USB_PID_OUT) {
 540                 //if(togl==0) togl=1; else togl=0;
 541                 //}
 542                 irp->dev->epTogl[(irp->endpoint & 0x7F)] = togl;
 543
 544                 break;
 545
 546         case USB_INTR:
 547                 //u8 runloop=1;
 548                 //u16 restlength = irp->len;
 549                 //char * td_buf_ptr=irp->buffer;
 550
 551                 /* schleife die die tds generiert */
 552                 while (runloop && (restlength > 0)) {
 553                         td = usb_create_transfer_descriptor(irp);
 554                         /* max packet size for given endpoint */
 555                         td->actlen = irp->epsize;
 556
 557                         td->pid = USB_PID_IN;
 558                         /* TODO: USB_PID_OUT */
 559
 560                         /* stop loop if all bytes are send */
 561                         if (restlength < irp->epsize) {
 562                                 runloop = 0;
 563                                 td->actlen = restlength;
 564                         }
 565
 566                         td->buffer = td_buf_ptr;
 567                         /* move pointer for next packet */
 568                         td_buf_ptr += irp->epsize;
 569
 570                         td->togl = togl;
 571                         togl = togl ? 0 : 1;
 572
 573                                 /**** send token ****/
 574                         hcdi_enqueue(td, irp->dev->ohci);
 575                         restlength = restlength - irp->epsize;
 576                         free(td);
 577                 }
 578                 break;
 579                 irp->dev->epTogl[(irp->endpoint & 0x7F)] = togl;
 580         }
 581         hcdi_fire(irp->dev->ohci);
 582
 583         return 1;
 584 }
 585
 586
 587
 588 /**
 589  * Create a transfer descriptor with an parent irp.
 590  */
 591 struct usb_transfer_descriptor *usb_create_transfer_descriptor(struct usb_irp * irp)
 592 {
 593         struct usb_transfer_descriptor *td =
 594                         (struct usb_transfer_descriptor *) malloc(sizeof(struct usb_transfer_descriptor));
 595
 596         td->devaddress = irp->dev->address;
 597         td->endpoint = irp->endpoint;
 598         td->iso = 0;
 599         td->state = USB_TRANSFER_DESCR_NONE;
 600         td->maxp = irp->epsize;
 601         td->fullspeed = irp->dev->fullspeed;
 602         td->type = irp->type;
 603
 604         return td;
 605 }
 606