/* usbPciStub.c - System-specific PCI Functions for Integrator Bsps *//* Copyright (c) 2002,2007 Wind River Systems, Inc. *//*Modification history--------------------01b,26sep07,mdo  Clear out apigen errors/warnings01a,25apr02,to   define PCI to CPU offset correctly.*//*DESCRIPTIONThis file defines platform-independent functions accessing PCI buscapabilities.  These functions allow PCI device drivers to be writtenindependent of the underlying O/S's PCI access mechanisms.The name of each function in this group begins with "usb" to represent"Device Driver Services."INCLUDE FILES: usbPlatform.h usbPciLib.h usbOhci.h*//* Includes */#include <vxWorks.h>#include <string.h>#include <sysLib.h>#include <cacheLib.h>#include <iv.h>#include <intLib.h>/*#include "drv/pci/pciConfigLib.h"*/   /* VxWorks PCI funcs */#include "integrator.h"#include <usb/usbPlatform.h>		/* Basic definitions */#include <usb/usbPciLib.h>			/* Our API */#include <drv/usb/usbOhci.h>                /* OHCI definitions */#define PCI_IO_OFFSET		PCI2CPU_IO_OFFSET#define PCI_MEM_OFFSET		PCI2DRAM_BASE_ADRS#define PCI_MEMIO_OFFSET	PCI2CPU_MEM_OFFSET#define sysOutByte(addr,data)	(*((UINT8  *) (addr)) = ((UINT8)  (data)))#define sysOutWord(addr,data)   (*((UINT16 *) (addr)) = ((UINT16) (data)))#define sysOutLong(addr,data)   (*((UINT32 *) (addr)) = ((UINT32) (data)))#define sysInByte(addr)         (*((UINT8  *) (addr)))#define sysInWord(addr)         (*((UINT16 *) (addr)))#define sysInLong(addr)         (*((UINT32 *) (addr)))#define INT_CONNECT(intNo, func, param)	\	intConnect (INUM_TO_IVEC(intNo), (VOIDFUNCPTR) (func), (int) (param))#define INT_DISCONNECT(intNo, func, param)#define INT_ENABLE(i)		intEnable(i)#define INT_DISABLE(i)		intDisable(i)/* Map I/O functions to underlying system functions. */#define	OUR_PCI_IN_BYTE(a)		sysInByte ((a) + PCI_IO_OFFSET)#define	OUR_PCI_IN_WORD(a)		sysInWord ((a) + PCI_IO_OFFSET)#define	OUR_PCI_IN_DWORD(a)		sysInLong ((a) + PCI_IO_OFFSET)#define	OUR_PCI_OUT_BYTE(a,v)	sysOutByte ((a) + PCI_IO_OFFSET, (v))#define	OUR_PCI_OUT_WORD(a,v)	sysOutWord ((a) + PCI_IO_OFFSET, (v))#define	OUR_PCI_OUT_DWORD(a,v)	sysOutLong ((a) + PCI_IO_OFFSET, (v))/* code tracks usage count for interrupts 0..MAX_INT_NO-1. */#define MAX_INT_NO		16/* locals */LOCAL UINT16 intUsage [MAX_INT_NO] = {0};LOCAL UINT32 sysUsbInitialised;/********************************************************************************* sysUsbPciInit - perform low level pci init of all Ohci class pci devices** This routine discovers and assigns PCI resources to all installed* USB class devices. In the case of the OPTI chip, it is one device* per chip. The 4 Port Lucent chip is a multi-function device with* 4 single port USB devices/functions.** NOTE: This routine should not be called directly by the user.** RETURNS: N/A*/void sysUsbPciInit (void)    {    int nth, pciBus, pciDevice, pciFunc;    /*     * Initialize only once     */    if( sysUsbInitialised )        return;    /*     * See if any USB boards are installed     */    for(nth = 0; ; nth++)        {        /*         * Look for the nth occurrence of a OHCI Class device on the Pci Bus         */        if (pciFindClass( ((OHCI_CLASS << 16) | (OHCI_SUBCLASS << 8) | OHCI_PGMIF),            nth, &pciBus, &pciDevice, &pciFunc) == OK)            {            /*             * Assign PCI resources to this device             */            pciAssignResources(pciBus, pciDevice, pciFunc);            sysUsbInitialised++;            }        else            {            /* No more devices found */            break;            }        }    }/***************************************************************************** usbPciClassFind - Locates PCI devices by class.** A caller uses this function to locate a PCI device by its PCI class.* The caller must specify the <pciClass>, <subClass>, and <pgmIf> for the* device being sought.	The function returns the first matching device* for <index> = 0, the second for <index> = 1, and so forth.  The* bus number, device number, and function number for the matching device* are returned in the <pBusNo>, <pDeviceNo>, and <pFuncNo> buffers provided* by the caller.*** RETURNS: TRUE if matching device found*	   FALSE if device not found*/BOOL usbPciClassFind    (    UINT8 pciClass,		/* PCI device class */    UINT8 subClass,		/* PCI device sub-class */    UINT8 pgmIf,		/* Programming interface */    UINT16 index,		/* Caller wants nth matching dev */    pUINT8 pBusNo,		/* Bus number of matching dev */    pUINT8 pDeviceNo,		/* Device number of matching dev */    pUINT8 pFuncNo		/* Function number of matching dev */    )    {    int intBusNo;		/* VxWorks returns "int" values */    int intDeviceNo;    int intFuncNo;    /* Use the VxWorks PCI config. library to find a device within the    specified class. */    if (pciFindClass ((pciClass << 16) | (subClass << 8) | pgmIf, index,	&intBusNo, &intDeviceNo, &intFuncNo) != OK)	{	return FALSE;	}    else	{	if (pBusNo)		*pBusNo = (UINT8) intBusNo;	if (pDeviceNo)		*pDeviceNo = (UINT8) intDeviceNo;	if (pFuncNo)		*pFuncNo = (UINT8) intFuncNo;	}    return TRUE;    }/***************************************************************************** usbPciByteGet - Returns a UINT8 configuration value** This function returns the UINT8 value at offset <regOffset> from* the PCI configuration space of the device identified by <busNo>,* <deviceNo>, and <funcNo>.** RETURNS: UINT8 value read from device configuration space*/UINT8 usbPciByteGet    (    UINT8 busNo,		/* Bus number of device */    UINT8 deviceNo,		/* Device number of device */    UINT8 funcNo,		/* Function number of device */    UINT16 regOffset		/* Offset into PCI config space */    )    {    UINT8 value;    if (pciConfigInByte (busNo, deviceNo, funcNo, regOffset, &value) != OK)	return 0;    return value;    }/***************************************************************************** usbPciWordGet - Returns a UINT16 configuration value** This function returns the UINT16 value at offset <regOffset> from* the PCI configuration space of the device identified by <busNo>,* <deviceNo>, and <funcNo>.** NOTE: This function adjusts for big vs. little endian environments.** RETURNS: UINT16 value read from device configuration space*/UINT32 usbPciWordGet    (    UINT8 busNo,		/* Bus number of device */    UINT8 deviceNo,		/* Device number of device */    UINT8 funcNo,		/* Function number of device */    UINT16 regOffset		/* Offset into PCI config space */    )    {    UINT16 value;    if (pciConfigInWord (busNo, deviceNo, funcNo, regOffset, &value) != OK)	return 0;    return value;    }/***************************************************************************** usbPciDwordGet - Returns a UINT32 configuration value** This function returns the UINT32 value at offset <regOffset> from* the PCI configuration space of the device identified by <busNo>,* <deviceNo>, and <funcNo>.** NOTE: This function adjusts for big vs. little endian environments.** RETURNS: UINT32 value read from device configuration space*/UINT32 usbPciDwordGet    (    UINT8 busNo,		/* Bus number of device */    UINT8 deviceNo,		/* Device number of device */    UINT8 funcNo,		/* Function number of device */    UINT16 regOffset		/* Offset into PCI config space */    )    {    UINT32 value;    if (pciConfigInLong (busNo, deviceNo, funcNo, regOffset, &value) != OK)	return 0;    return value;    }/***************************************************************************** usbPciConfigHeaderGet - Reads a device's PCI configuration header** This function reads the PCI configuration header for the device* identified by <busNo>, <deviceNo>, and <funcNo>.  The configuration* header is stored in the <pCfgHdr> buffer provided by the caller.** This function initializes the <pCfgHdr> structure to zeros.  Any* fields which cannot be read from the device's configuration header* will remain zero upon return.  This function does not attempt to read* fields defined as "reserved" in the PCI configuration header.** RETURNS: N/A*/VOID usbPciConfigHeaderGet    (    UINT8 busNo,		/* Bus number of device */    UINT8 deviceNo,		/* Device number of device */    UINT8 funcNo,		/* Function number of device */    pPCI_CFG_HEADER pCfgHdr	/* Buffer provided by caller */    )    {    int i;    /* Do nothing if CfgHdr is NULL */    if (pCfgHdr == NULL)	return;    /* Initialize the buffer to zeros. */    memset (pCfgHdr, 0, sizeof (*pCfgHdr));    /* Read and store each field in the PCI configuration header. */    pCfgHdr->vendorId	= usbPciWordGet (busNo, deviceNo, funcNo, PCI_CFG_VENDOR_ID);    pCfgHdr->deviceId	= usbPciWordGet (busNo, deviceNo, funcNo, PCI_CFG_DEVICE_ID);    pCfgHdr->command	= usbPciWordGet (busNo, deviceNo, funcNo, PCI_CFG_COMMAND);    pCfgHdr->status	= usbPciWordGet (busNo, deviceNo, funcNo, PCI_CFG_STATUS);    pCfgHdr->revisionId = usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_REVISION);    pCfgHdr->pgmIf	= usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_PROGRAMMING_IF);    pCfgHdr->subClass	= usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_SUBCLASS);    pCfgHdr->pciClass	= usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_CLASS);    pCfgHdr->cacheLineSize = usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_CACHE_LINE_SIZE);    pCfgHdr->latencyTimer = usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_LATENCY_TIMER);    pCfgHdr->headerType = usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_HEADER_TYPE);    pCfgHdr->bist	= usbPciByteGet (busNo, deviceNo, funcNo, PCI_CFG_BIST);    for (i = 0; i < PCI_CFG_NUM_BASE_REG; i++)        {	pCfgHdr->baseReg [i] = usbPciDwordGet (busNo, deviceNo, funcNo,	    PCI_CFG_BASE_ADDRESS_0 + i * sizeof (UINT32));