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OpenStep 4.2J (Developer)
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PCI.h
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1996-06-28
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/* Copyright (c) 1994-1996 NeXT Software, Inc. All rights reserved.
*
* PCI Configuration space structure and associated defines.
*
* HISTORY
*
* 13 May 1994 Dean Reece at NeXT
* Created.
*
*/
/* The IOPCIConfigSpace structure can be used to decode the 256 byte
* configuration space presented by each PCI device. This structure
* is based on the PCI LOCAL BUS SPECIFICATION, rev 2.1, section 6.1
*/
typedef struct _IOPCIConfigSpace {
unsigned short VendorID;
unsigned short DeviceID;
unsigned short Command;
unsigned short Status;
unsigned long RevisionID:8;
unsigned long ClassCode:24;
unsigned char CacheLineSize;
unsigned char LatencyTimer;
unsigned char HeaderType;
unsigned char BuiltInSelfTest;
unsigned long BaseAddress[6];
unsigned long CardbusCISpointer;
unsigned short SubVendorID;
unsigned short SubDeviceID;
unsigned long ROMBaseAddress;
unsigned long reserved3;
unsigned long reserved4;
unsigned char InterruptLine;
unsigned char InterruptPin;
unsigned char MinGrant;
unsigned char MaxLatency;
unsigned long VendorUnique[48];
} IOPCIConfigSpace;
/* PCI_DEFAULT_DATA is the value resulting from a read to a non-existent
* PCI device's configuration space.
*/
#define PCI_DEFAULT_DATA 0xffffffff
/* PCI_INVALID_VENDOR_ID is a Vendor ID reserved by the PCI/SIG and is
* guaranteed not to be assigned to any vendor.
*/
#define PCI_INVALID_VENDOR_ID 0xffff