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pci空间是在config.h里面配置的。

#define PCI_MEM_ADRS 0x50000000
#define PCI_MEM_SIZE 0x01000000 /*16MB */
#define PCI_MEM_SIZE_MASK PCI_SIZE_MASK_16M /* This should match PCI_MEM_SIZE */
#define PCI_MEMIO_ADRS 0x60000000
#define PCI_MEMIO_SIZE 0x01000000 /*16MB */
#define PCI_MEMIO_SIZE_MASK PCI_SIZE_MASK_16M /* This should match PCI_MEMIO_SIZE */
#define PCI_IO_ADRS 0x70000000
#define PCI_IO_SIZE 0x00000000 /* IO Space is not available */

sysBusToLocalAdrs是syslib.c中的函数。

/******************************************************************************
*
* sysBusToLocalAdrs - convert a bus address to a local address
*
* This routine returns a local address that is used to access the VMEbus.
* The bus address that is passed into this routine is the VMEbus address
* as it would be seen on the bus.
*
* RETURNS: OK, or ERROR if the address space is unknown or the mapping is not
* possible.
*
* SEE ALSO: sysLocalToBusAdrs()
*/

STATUS sysBusToLocalAdrs
(
int adrsSpace, /* bus address space where busAdrs resides */
char * busAdrs, /* bus address to convert */
char ** pLocalAdrs /* where to return local address */
)
{

pci空间只配置一个分类（mem/io等）的地址，具体到device以后，pci总线会自己去找，然后自动配置，你可以用函数去查看自动配置的结果。