"PCI Device Header Address Bitfield" (SVC/MEM)

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Ancestry:

0x000	pkt	LMEMLOADPCI
0x00A	bf	CPCIADDRBF addr

Definition:

Alignment:	2-byte boundary
APID:	1604/0x644:5
Attribute(s):
C type:	unsigned short
Length:	16 bits (2 bytes)
Offset:	0x00A

Description:

Bitfield containing PCI device header address.

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Item Type and Name

CPCIADDRBF (bf)
|  CPCIBUS bus (0)
|  CPCIDEVICE device (1-5)
|  CPCIFUNCTION function (6-7)
|  CPCIOFFSET offset (8-15)

typedef struct _MEM_CPCIADDRBF_Bfl {

    #if ENDIANNESS_IS_BIG

    /* PCI Bus Address */
    unsigned short       bus:1;

    /* PCI Device Address */
    unsigned short       device:5;

    /* PCI Function Address */
    unsigned short       function:2;

    /* PCI Offset Address */
    unsigned short       offset:8;

    #elif ENDIANNESS_IS_LITTLE

    /* PCI Offset Address */
    unsigned short       offset:8;

    /* PCI Function Address */
    unsigned short       function:2;

    /* PCI Device Address */
    unsigned short       device:5;

    /* PCI Bus Address */
    unsigned short       bus:1;

    #else

    #error _FILE_ ENDIANNESS NOT DEFINED

    #endif

} __attribute__((packed)) MEM_CPCIADDRBF_Bfl;

typedef union _MEM_CPCIADDRBF {

    /* underlying unsigned short */
    unsigned short                  us;

    /* struct mapped bitfield */
    struct _MEM_CPCIADDRBF_Bfl      bf;

} MEM_CPCIADDRBF;