RAM 6.0 BUX II Series Betriebsanweisung PDF herunterladen (Seite 98)

VxWorks

BSP Developer’s Guide, 6.0

Example 3-1 Basic PCI Configuration

/* sysBusPci.c - configure PCI bus for hypothetical BSP */

/* forward declarations */

void sysPciAutoConfig (void);

void sysPciMemCfg (void *pCookie);

STATUS sysPciAutoconfigInclude

(

PCI_SYSTEM *pSys,

PCI_LOC *pLoc,

UINT devVend

);

UCHAR sysPciAutoconfigIntrAssign

(

PCI_SYSTEM *pSys,

PCI_LOC *pLoc,

UCHAR pin

);

/************************************************************

* sysPciAutoConfig - BSP support routine to configure PCI bus

* RETURNS: N/A

void sysPciAutoConfig (void)

{

void *pCookie;

pCookie = pciAutoConfigLibInit(NULL);

/* Configure Memory Addresses and Sizes */

sysPciMemCfg(pCookie);

/* Configuration Options */

/* Cache Line Size */

pciAutoCfgCtl(pCookie, PCI_CACHE_SIZE_SET,

(void *)(_CACHE_ALIGN_SIZE/4));

/* Uniform MAX_LAT value */

pciAutoCfgCtl(pCookie, PCI_MAX_LAT_ALL_SET, (void *)PCI_LAT_TIMER);

/* BSP-Specified Devices to Configure */

pciAutoCfgCtl(pCookie, PCI_INCLUDE_FUNC_SET,

(void *)sysPciAutoConfigInclude);

/* BSP-Specified Interrupt Assignment */

pciAutoCfgCtl(pCookie, PCI_INT_ASSIGN_FUNC_SET,

(void *)sysPciAutoconfigIntrAssign);

/* Perform AutoConfig */

pciAutoCfg(pCookie);

/* Enable Fast Back To Back Transactions */

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