/* sysPci.c - pxa270 PCI autoconfig support *//* Copyright 2002 Wind River Systems, Inc. All Rights Reserved *//*modification history--------------------01a,21may02,scm written.*//*   TODO - Fill in this file with I/O addresses and related constants for the          pxa270 BSP. Anything with "pxa270" as a prefix needs to examined           and re-named to id the BSP (i.e. iq80321, iq80310, etc.) *//*DESCRIPTIONThis module contains the "non-generic" or "board specific" PCI-PCIbridge initialization code.*//* includes */#include "vxWorks.h"#include "config.h"#include "stdio.h"#include "logLib.h"#include "taskLib.h"#include "end.h"#ifdef  INCLUDE_PCI/* defines *//* global */IMPORT END_TBL_ENTRY endDevTbl[];END_TBL_ENTRY   *pendDevTbl = endDevTbl;/* include */#include "drv/pci/pciConfigLib.h"#include "drv/pci/pciConfigLib.c"#ifdef INCLUDE_SHOW_ROUTINES#include "drv/pci/pciConfigShow.c" /* display of PCI config space */#endiftypedef struct{    UINT32    pciVend;    UINT32    pciDevice;}SYS_PCI_IDENT;/* local *//* forward declarations */LOCAL UINT32 sysPciEncode (UINT32 bus, UINT32 dev, UINT32 func);STATUS sysPciCfgWrite (int bus, int dev, int func, int offset, int size, UINT32 data);STATUS sysPciCfgRead (int bus, int dev, int func, int offset, int size, void *data);STATUS sysPciFindDevices (SYS_PCI_IDENT * pDeviceList, int index, int * pBusNo,                          int * pDeviceNo, UINT16 * pVendorId, UINT16 * pDeviceId);void sysPciInit (void);void sysPciInit2 (void);void sysPciAbortsClear(void);/********************************************************************************* sysPciEncode - encode parameters for the Configuration Address Register** This routine packs three parameters into one integer for accessing the* Configuration Address Register** RETURNS: integer encoded version of bus, device, and function numbers.*/LOCAL UINT32 sysPciEncode (    UINT32 bus,    UINT32 dev,    UINT32 func    )    {    if(bus == 0)        {         return (( 1 << ((dev & 0x1f) + 16)) | ((dev & 0x1f) << 11) | ((func & 7) << 8));        }    return (((bus & 0xff) << 16) | ((dev & 0x1f) << 11) | ((func & 7) << 8) | 1);    }/********************************************************************************* sysPciCfgWrite - write to one PCI configuration register location of the*                  specified size (1, 2 or 4 bytes).** This routine writes one PCI configuration space location** RETURNS: OK or ERROR**/STATUS sysPciCfgWrite(    int bus,    int dev,    int func,    int offset,    int size,    UINT32 data    )    {    volatile UINT32 pciDevice;    int            lockKey;    STATUS         rc;    unsigned short dus;    unsigned char  duc;/*  * TODO -  * supply correct OCCAR & OCCDR reg definitions for pxa270 */    pciDevice = sysPciEncode(bus,dev,func);    /* write cfg space data */    switch(size)        {        case 4:            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_WRITE, 4, (char *)&data);            intUnlock(lockKey);            break;        case 2:            dus = (unsigned short)data;            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_WRITE, 2, (char *)&dus);            intUnlock(lockKey);            break;        default:            duc = (unsigned char)data;            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_WRITE, 1, (char *)&duc);            intUnlock(lockKey);        }    return rc;    }/********************************************************************************* sysPciCfgRead - reads one PCI configuration space register location of the*                 specified size (1, 2 or 4 bytes).** This routine reads one PCI configuration register location** RETURNS : OK or ERROR*/STATUS sysPciCfgRead(    int bus,    int dev,    int func,    int offset,    int size,    void *data    )    {    volatile UINT32 pciDevice;    int       lockKey;    STATUS    rc;/*  * TODO -  * supply correct OCCAR & OCCDR reg definitions for pxa270 */    pciDevice = sysPciEncode(bus,dev,func);    /* read cfg space data */    switch(size)        {        case 4:            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_READ, 4, (char *)data);            intUnlock(lockKey);            break;        case 2:            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_READ, 2, (char *)data);            intUnlock(lockKey);            break;        default:            lockKey = intLock();            *((volatile UINT32 *)(pxa270_OCCAR_REG)) = (pciDevice | (offset & ~3));            rc = vxMemProbe ((char *)pxa270_OCCDR_REG, VX_READ, 1, (char *)data);            intUnlock(lockKey);        }    return rc;}/********************************************************************************* sysPciFindDevice - find the nth device with the given device & vendor ID** This routine finds the nth device with the given device & vendor ID.** RETURNS:* OK, or ERROR if the deviceId and vendorId didn't match.*/STATUS sysPciFindDevices(    SYS_PCI_IDENT * pDeviceList,/* ptr to array vend/device ID */    int             index,        /* desired instance of device */    int           * pBusNo,        /* bus number */    int           * pDeviceNo,    /* device number */    UINT16        * pVendorId,  /* vendor ID */    UINT16        * pDeviceId   /* device ID */    )    {    STATUS            status = ERROR;    int                bus,dev,func=0;    UINT32            devId,vendId;    SYS_PCI_IDENT * pDev;    for(bus = 0; bus < PCI_MAX_BUS; ++bus)        {        for(dev = 0;dev < PCI_MAX_DEV; ++dev)            {            pciConfigInLong(bus,dev,func,PCI_CFG_VENDOR_ID,&vendId);            if((vendId & 0x0000ffff) != 0x0000FFFF)                {                devId = (vendId >> 16) & 0xffff;                vendId &= 0x0000FFFF;                pDev = pDeviceList;                while(pDev->pciVend && pDev->pciDevice)                    {                    if(vendId == pDev->pciVend && devId == pDev->pciDevice && index-- == 0)                        {                        *pBusNo        = bus;                        *pDeviceNo    = dev;                        *pVendorId    = (UINT16)vendId;                        *pDeviceId    = (UINT16)devId;                        return OK;                        }                    ++pDev;                    }                }            }        }    return status;    }/***************************************************************************** sysPciInit - PCI Configuration LIbrary Initialization*** RETURNS: None** NOMANUAL*/void sysPciInit(void)    {    /* PCI Configuration Library Initialization MECHANISM_0 */    pciConfigLibInit(PCI_MECHANISM_0,(int)sysPciCfgRead,(int)sysPciCfgWrite,0);    return;    }/***************************************************************************** sysPciInit2 - Second PCI Initialization*** RETURNS: None** NOMANUAL*/void sysPciInit2(void)    {    sysPciAbortsClear();    }/***************************************************************************** sysPciAbortsClear - Clear Target Aborts in PCI status Register*** RETURNS: None** NOMANUAL*/void sysPciAbortsClear(void)    {  UINT32 tmp;/*  * TODO -  * ATU Status Register -clear, * ATU Interrupt Status Register -clear  */    }#endif /* INCLUDE_PCI */