/* usrUsbHcdUhciInit.c - Initialization of a UHCI Host Controller Driver *//* Copyright 1999-2000 Wind River Systems, Inc. *//*Modification history--------------------01a,23aug00,wef	 Created*//*DESCRIPTIONThis configlette initializes a USB Host Controller if present on a system.It receives a parameter which indicates whether an OHCI or a UHCI controlleris to be intialized.  The initialization process includes bringing up the chip and also "attaches" the chip to the previously initilazed USB stack. The stack is initialized in usrUsbInit.c*//* includes */#include "usb/usbPciLib.h"#include "usb/usbdLib.h"#include "drv/usb/usbUhci.h"		#include "drv/usb/usbHcdUhciLib.h"  LOCAL GENERIC_HANDLE uhciAttachToken = NULL;/* defines *//* locals *//******************************************************************************* usrUsbHcdUhciAttach - attaches a Host Controller to the USB Stack** This functions searches the pci bus for either a OHCI or UHCI type* USB Host Controller.  If it finds one, it attaches it to the already* initialized USB Stack** RETURNS: OK if sucessful or ERROR if failure*/LOCAL STATUS usrUsbHcdUhciAttach ()    {    UINT16 ret;    UINT8 busNo;    UINT8 deviceNo;    UINT8 funcNo;    PCI_CFG_HEADER pciCfgHdr;    UINT8 pciClass    = UHCI_CLASS;    UINT8 pciSubclass = UHCI_SUBCLASS;    UINT8 pciPgmIf    = UHCI_PGMIF;    HCD_EXEC_FUNC execFunc = &usbHcdUhciExec;     GENERIC_HANDLE *pToken = &uhciAttachToken;        if (*pToken == NULL)        {        if (!usbPciClassFind (pciClass, pciSubclass, pciPgmIf, 0, 	    &busNo, &deviceNo, &funcNo))            {            printf ("No UHCI host controller found.\n");            return ERROR;            }        printf ("UHCI Controller found.\n"); 	printf ("Waiting to attach...");        usbPciConfigHeaderGet (busNo, deviceNo, funcNo, &pciCfgHdr);        /* Attach the UHCI HCD to the USBD. */        ret = usbdHcdAttach (execFunc, &pciCfgHdr, pToken);        if (ret == OK)	   {           printf ("Done, AttachToken = 0x%x\n", *pToken);	   }        else           {           printf ("USB HCD Attached FAILED!\n");           return ERROR;           }        }    else         {        printf("UHCI Already Attached\n");        }    return OK;         }