/** @file
CXL 1.1 Register definitions
This file contains the register definitions based on the Compute Express Link
(CXL) Specification Revision 1.1.
Copyright (c) 2020, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef _CXL11_H_
#define _CXL11_H_
#include
//
// DVSEC Vendor ID
// Compute Express Link Specification Revision: 1.1 - Chapter 7.1.1 - Table 58
// (subject to change as per CXL assigned Vendor ID)
//
#define INTEL_CXL_DVSEC_VENDOR_ID 0x8086
//
// CXL Flex Bus Device default device and function number
// Compute Express Link Specification Revision: 1.1 - Chapter 7.1.1
//
#define CXL_DEV_DEV 0
#define CXL_DEV_FUNC 0
//
// Ensure proper structure formats
//
#pragma pack(1)
///
/// The PCIe DVSEC for Flex Bus Device
///@{
typedef union {
struct {
UINT16 CacheCapable : 1; // bit 0
UINT16 IoCapable : 1; // bit 1
UINT16 MemCapable : 1; // bit 2
UINT16 MemHwInitMode : 1; // bit 3
UINT16 HdmCount : 2; // bit 4..5
UINT16 Reserved1 : 8; // bit 6..13
UINT16 ViralCapable : 1; // bit 14
UINT16 Reserved2 : 1; // bit 15
} Bits;
UINT16 Uint16;
} CXL_DVSEC_FLEX_BUS_DEVICE_CAPABILITY;
typedef union {
struct {
UINT16 CacheEnable : 1; // bit 0
UINT16 IoEnable : 1; // bit 1
UINT16 MemEnable : 1; // bit 2
UINT16 CacheSfCoverage : 5; // bit 3..7
UINT16 CacheSfGranularity : 3; // bit 8..10
UINT16 CacheCleanEviction : 1; // bit 11
UINT16 Reserved1 : 2; // bit 12..13
UINT16 ViralEnable : 1; // bit 14
UINT16 Reserved2 : 1; // bit 15
} Bits;
UINT16 Uint16;
} CXL_DVSEC_FLEX_BUS_DEVICE_CONTROL;
typedef union {
struct {
UINT16 Reserved1 : 14; // bit 0..13
UINT16 ViralStatus : 1; // bit 14
UINT16 Reserved2 : 1; // bit 15
} Bits;
UINT16 Uint16;
} CXL_DVSEC_FLEX_BUS_DEVICE_STATUS;
typedef union {
struct {
UINT16 Reserved1 : 1; // bit 0
UINT16 Reserved2 : 1; // bit 1
UINT16 Reserved3 : 1; // bit 2
UINT16 Reserved4 : 13; // bit 3..15
} Bits;
UINT16 Uint16;
} CXL_1_1_DVSEC_FLEX_BUS_DEVICE_CONTROL2;
typedef union {
struct {
UINT16 Reserved1 : 1; // bit 0
UINT16 Reserved2 : 1; // bit 1
UINT16 Reserved3 : 14; // bit 2..15
} Bits;
UINT16 Uint16;
} CXL_1_1_DVSEC_FLEX_BUS_DEVICE_STATUS2;
typedef union {
struct {
UINT16 ConfigLock : 1; // bit 0
UINT16 Reserved1 : 15; // bit 1..15
} Bits;
UINT16 Uint16;
} CXL_DVSEC_FLEX_BUS_DEVICE_LOCK;
typedef union {
struct {
UINT32 MemorySizeHigh : 32; // bit 0..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_SIZE_HIGH;
typedef union {
struct {
UINT32 MemoryInfoValid : 1; // bit 0
UINT32 MemoryActive : 1; // bit 1
UINT32 MediaType : 3; // bit 2..4
UINT32 MemoryClass : 3; // bit 5..7
UINT32 DesiredInterleave : 3; // bit 8..10
UINT32 Reserved : 17; // bit 11..27
UINT32 MemorySizeLow : 4; // bit 28..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_SIZE_LOW;
typedef union {
struct {
UINT32 MemoryBaseHigh : 32; // bit 0..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_BASE_HIGH;
typedef union {
struct {
UINT32 Reserved : 28; // bit 0..27
UINT32 MemoryBaseLow : 4; // bit 28..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_BASE_LOW;
typedef union {
struct {
UINT32 MemorySizeHigh : 32; // bit 0..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_SIZE_HIGH;
typedef union {
struct {
UINT32 MemoryInfoValid : 1; // bit 0
UINT32 MemoryActive : 1; // bit 1
UINT32 MediaType : 3; // bit 2..4
UINT32 MemoryClass : 3; // bit 5..7
UINT32 DesiredInterleave : 3; // bit 8..10
UINT32 Reserved : 17; // bit 11..27
UINT32 MemorySizeLow : 4; // bit 28..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_SIZE_LOW;
typedef union {
struct {
UINT32 MemoryBaseHigh : 32; // bit 0..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_BASE_HIGH;
typedef union {
struct {
UINT32 Reserved : 28; // bit 0..27
UINT32 MemoryBaseLow : 4; // bit 28..31
} Bits;
UINT32 Uint32;
} CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_BASE_LOW;
//
// Flex Bus Device DVSEC ID
// Compute Express Link Specification Revision: 1.1 - Chapter 7.1.1, Table 58
//
#define FLEX_BUS_DEVICE_DVSEC_ID 0
//
// PCIe DVSEC for Flex Bus Device
// Compute Express Link Specification Revision: 1.1 - Chapter 7.1.1, Figure 95
//
typedef struct {
PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER Header; // offset 0
PCI_EXPRESS_DESIGNATED_VENDOR_SPECIFIC_HEADER_1 DesignatedVendorSpecificHeader1; // offset 4
PCI_EXPRESS_DESIGNATED_VENDOR_SPECIFIC_HEADER_2 DesignatedVendorSpecificHeader2; // offset 8
CXL_DVSEC_FLEX_BUS_DEVICE_CAPABILITY DeviceCapability; // offset 10
CXL_DVSEC_FLEX_BUS_DEVICE_CONTROL DeviceControl; // offset 12
CXL_DVSEC_FLEX_BUS_DEVICE_STATUS DeviceStatus; // offset 14
CXL_1_1_DVSEC_FLEX_BUS_DEVICE_CONTROL2 DeviceControl2; // offset 16
CXL_1_1_DVSEC_FLEX_BUS_DEVICE_STATUS2 DeviceStatus2; // offset 18
CXL_DVSEC_FLEX_BUS_DEVICE_LOCK DeviceLock; // offset 20
UINT16 Reserved; // offset 22
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_SIZE_HIGH DeviceRange1SizeHigh; // offset 24
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_SIZE_LOW DeviceRange1SizeLow; // offset 28
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_BASE_HIGH DeviceRange1BaseHigh; // offset 32
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE1_BASE_LOW DeviceRange1BaseLow; // offset 36
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_SIZE_HIGH DeviceRange2SizeHigh; // offset 40
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_SIZE_LOW DeviceRange2SizeLow; // offset 44
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_BASE_HIGH DeviceRange2BaseHigh; // offset 48
CXL_DVSEC_FLEX_BUS_DEVICE_RANGE2_BASE_LOW DeviceRange2BaseLow; // offset 52
} CXL_1_1_DVSEC_FLEX_BUS_DEVICE;
///@}
///
/// PCIe DVSEC for FLex Bus Port
///@{
typedef union {
struct {
UINT16 CacheCapable : 1; // bit 0
UINT16 IoCapable : 1; // bit 1
UINT16 MemCapable : 1; // bit 2
UINT16 Reserved : 13; // bit 3..15
} Bits;
UINT16 Uint16;
} CXL_1_1_DVSEC_FLEX_BUS_PORT_CAPABILITY;
typedef union {
struct {
UINT16 CacheEnable : 1; // bit 0
UINT16 IoEnable : 1; // bit 1
UINT16 MemEnable : 1; // bit 2
UINT16 CxlSyncBypassEnable : 1; // bit 3
UINT16 DriftBufferEnable : 1; // bit 4
UINT16 Reserved : 3; // bit 5..7
UINT16 Retimer1Present : 1; // bit 8
UINT16 Retimer2Present : 1; // bit 9
UINT16 Reserved2 : 6; // bit 10..15
} Bits;
UINT16 Uint16;
} CXL_1_1_DVSEC_FLEX_BUS_PORT_CONTROL;
typedef union {
struct {
UINT16 CacheEnable : 1; // bit 0
UINT16 IoEnable : 1; // bit 1
UINT16 MemEnable : 1; // bit 2
UINT16 CxlSyncBypassEnable : 1; // bit 3
UINT16 DriftBufferEnable : 1; // bit 4
UINT16 Reserved : 3; // bit 5..7
UINT16 CxlCorrectableProtocolIdFramingError : 1; // bit 8
UINT16 CxlUncorrectableProtocolIdFramingError : 1; // bit 9
UINT16 CxlUnexpectedProtocolIdDropped : 1; // bit 10
UINT16 Reserved2 : 5; // bit 11..15
} Bits;
UINT16 Uint16;
} CXL_1_1_DVSEC_FLEX_BUS_PORT_STATUS;
//
// Flex Bus Port DVSEC ID
// Compute Express Link Specification Revision: 1.1 - Chapter 7.2.1.3, Table 62
//
#define FLEX_BUS_PORT_DVSEC_ID 7
//
// PCIe DVSEC for Flex Bus Port
// Compute Express Link Specification Revision: 1.1 - Chapter 7.2.1.3, Figure 99
//
typedef struct {
PCI_EXPRESS_EXTENDED_CAPABILITIES_HEADER Header; // offset 0
PCI_EXPRESS_DESIGNATED_VENDOR_SPECIFIC_HEADER_1 DesignatedVendorSpecificHeader1; // offset 4
PCI_EXPRESS_DESIGNATED_VENDOR_SPECIFIC_HEADER_2 DesignatedVendorSpecificHeader2; // offset 8
CXL_1_1_DVSEC_FLEX_BUS_PORT_CAPABILITY PortCapability; // offset 10
CXL_1_1_DVSEC_FLEX_BUS_PORT_CONTROL PortControl; // offset 12
CXL_1_1_DVSEC_FLEX_BUS_PORT_STATUS PortStatus; // offset 14
} CXL_1_1_DVSEC_FLEX_BUS_PORT;
///@}
///
/// CXL 1.1 Upstream and Downstream Port Subsystem Component registers
///
/// The CXL.Cache and CXL.Memory Architectural register definitions
/// Based on chapter 7.2.2 of Compute Express Link Specification Revision: 1.1
///@{
#define CXL_CAPABILITY_HEADER_OFFSET 0
typedef union {
struct {
UINT32 CxlCapabilityId : 16; // bit 0..15
UINT32 CxlCapabilityVersion : 4; // bit 16..19
UINT32 CxlCacheMemVersion : 4; // bit 20..23
UINT32 ArraySize : 8; // bit 24..31
} Bits;
UINT32 Uint32;
} CXL_CAPABILITY_HEADER;
#define CXL_RAS_CAPABILITY_HEADER_OFFSET 4
typedef union {
struct {
UINT32 CxlCapabilityId : 16; // bit 0..15
UINT32 CxlCapabilityVersion : 4; // bit 16..19
UINT32 CxlRasCapabilityPointer : 12; // bit 20..31
} Bits;
UINT32 Uint32;
} CXL_RAS_CAPABILITY_HEADER;
#define CXL_SECURITY_CAPABILITY_HEADER_OFFSET 8
typedef union {
struct {
UINT32 CxlCapabilityId : 16; // bit 0..15
UINT32 CxlCapabilityVersion : 4; // bit 16..19
UINT32 CxlSecurityCapabilityPointer : 12; // bit 20..31
} Bits;
UINT32 Uint32;
} CXL_SECURITY_CAPABILITY_HEADER;
#define CXL_LINK_CAPABILITY_HEADER_OFFSET 0xC
typedef union {
struct {
UINT32 CxlCapabilityId : 16; // bit 0..15
UINT32 CxlCapabilityVersion : 4; // bit 16..19
UINT32 CxlLinkCapabilityPointer : 12; // bit 20..31
} Bits;
UINT32 Uint32;
} CXL_LINK_CAPABILITY_HEADER;
typedef union {
struct {
UINT32 CacheDataParity : 1; // bit 0..0
UINT32 CacheAddressParity : 1; // bit 1..1
UINT32 CacheByteEnableParity : 1; // bit 2..2
UINT32 CacheDataEcc : 1; // bit 3..3
UINT32 MemDataParity : 1; // bit 4..4
UINT32 MemAddressParity : 1; // bit 5..5
UINT32 MemByteEnableParity : 1; // bit 6..6
UINT32 MemDataEcc : 1; // bit 7..7
UINT32 ReInitThreshold : 1; // bit 8..8
UINT32 RsvdEncodingViolation : 1; // bit 9..9
UINT32 PoisonReceived : 1; // bit 10..10
UINT32 ReceiverOverflow : 1; // bit 11..11
UINT32 Reserved : 20; // bit 12..31
} Bits;
UINT32 Uint32;
} CXL_1_1_UNCORRECTABLE_ERROR_STATUS;
typedef union {
struct {
UINT32 CacheDataParityMask : 1; // bit 0..0
UINT32 CacheAddressParityMask : 1; // bit 1..1
UINT32 CacheByteEnableParityMask : 1; // bit 2..2
UINT32 CacheDataEccMask : 1; // bit 3..3
UINT32 MemDataParityMask : 1; // bit 4..4
UINT32 MemAddressParityMask : 1; // bit 5..5
UINT32 MemByteEnableParityMask : 1; // bit 6..6
UINT32 MemDataEccMask : 1; // bit 7..7
UINT32 ReInitThresholdMask : 1; // bit 8..8
UINT32 RsvdEncodingViolationMask : 1; // bit 9..9
UINT32 PoisonReceivedMask : 1; // bit 10..10
UINT32 ReceiverOverflowMask : 1; // bit 11..11
UINT32 Reserved : 20; // bit 12..31
} Bits;
UINT32 Uint32;
} CXL_1_1_UNCORRECTABLE_ERROR_MASK;
typedef union {
struct {
UINT32 CacheDataParitySeverity : 1; // bit 0..0
UINT32 CacheAddressParitySeverity : 1; // bit 1..1
UINT32 CacheByteEnableParitySeverity : 1; // bit 2..2
UINT32 CacheDataEccSeverity : 1; // bit 3..3
UINT32 MemDataParitySeverity : 1; // bit 4..4
UINT32 MemAddressParitySeverity : 1; // bit 5..5
UINT32 MemByteEnableParitySeverity : 1; // bit 6..6
UINT32 MemDataEccSeverity : 1; // bit 7..7
UINT32 ReInitThresholdSeverity : 1; // bit 8..8
UINT32 RsvdEncodingViolationSeverity : 1; // bit 9..9
UINT32 PoisonReceivedSeverity : 1; // bit 10..10
UINT32 ReceiverOverflowSeverity : 1; // bit 11..11
UINT32 Reserved : 20; // bit 12..31
} Bits;
UINT32 Uint32;
} CXL_1_1_UNCORRECTABLE_ERROR_SEVERITY;
typedef union {
struct {
UINT32 CacheDataEcc : 1; // bit 0..0
UINT32 MemoryDataEcc : 1; // bit 1..1
UINT32 CrcThreshold : 1; // bit 2..2
UINT32 RetryThreshold : 1; // bit 3..3
UINT32 CachePoisonReceived : 1; // bit 4..4
UINT32 MemoryPoisonReceived : 1; // bit 5..5
UINT32 PhysicalLayerError : 1; // bit 6..6
UINT32 Reserved : 25; // bit 7..31
} Bits;
UINT32 Uint32;
} CXL_CORRECTABLE_ERROR_STATUS;
typedef union {
struct {
UINT32 CacheDataEccMask : 1; // bit 0..0
UINT32 MemoryDataEccMask : 1; // bit 1..1
UINT32 CrcThresholdMask : 1; // bit 2..2
UINT32 RetryThresholdMask : 1; // bit 3..3
UINT32 CachePoisonReceivedMask : 1; // bit 4..4
UINT32 MemoryPoisonReceivedMask : 1; // bit 5..5
UINT32 PhysicalLayerErrorMask : 1; // bit 6..6
UINT32 Reserved : 25; // bit 7..31
} Bits;
UINT32 Uint32;
} CXL_CORRECTABLE_ERROR_MASK;
typedef union {
struct {
UINT32 FirstErrorPointer : 4; // bit 0..3
UINT32 Reserved1 : 5; // bit 4..8
UINT32 MultipleHeaderRecordingCapability : 1; // bit 9..9
UINT32 Reserved2 : 3; // bit 10..12
UINT32 PoisonEnabled : 1; // bit 13..13
UINT32 Reserved3 : 18; // bit 14..31
} Bits;
UINT32 Uint32;
} CXL_ERROR_CAPABILITIES_AND_CONTROL;
typedef struct {
CXL_1_1_UNCORRECTABLE_ERROR_STATUS UncorrectableErrorStatus;
CXL_1_1_UNCORRECTABLE_ERROR_MASK UncorrectableErrorMask;
CXL_1_1_UNCORRECTABLE_ERROR_SEVERITY UncorrectableErrorSeverity;
CXL_CORRECTABLE_ERROR_STATUS CorrectableErrorStatus;
CXL_CORRECTABLE_ERROR_MASK CorrectableErrorMask;
CXL_ERROR_CAPABILITIES_AND_CONTROL ErrorCapabilitiesAndControl;
UINT32 HeaderLog[16];
} CXL_1_1_RAS_CAPABILITY_STRUCTURE;
typedef union {
struct {
UINT32 DeviceTrustLevel : 2; // bit 0..1
UINT32 Reserved : 30; // bit 2..31
} Bits;
UINT32 Uint32;
} CXL_1_1_SECURITY_POLICY;
typedef struct {
CXL_1_1_SECURITY_POLICY SecurityPolicy;
} CXL_1_1_SECURITY_CAPABILITY_STRUCTURE;
typedef union {
struct {
UINT64 CxlLinkVersionSupported : 4; // bit 0..3
UINT64 CxlLinkVersionReceived : 4; // bit 4..7
UINT64 LlrWrapValueSupported : 8; // bit 8..15
UINT64 LlrWrapValueReceived : 8; // bit 16..23
UINT64 NumRetryReceived : 5; // bit 24..28
UINT64 NumPhyReinitReceived : 5; // bit 29..33
UINT64 WrPtrReceived : 8; // bit 34..41
UINT64 EchoEseqReceived : 8; // bit 42..49
UINT64 NumFreeBufReceived : 8; // bit 50..57
UINT64 Reserved : 6; // bit 58..63
} Bits;
UINT64 Uint64;
} CXL_LINK_LAYER_CAPABILITY;
typedef union {
struct {
UINT16 LlReset : 1; // bit 0..0
UINT16 LlInitStall : 1; // bit 1..1
UINT16 LlCrdStall : 1; // bit 2..2
UINT16 InitState : 2; // bit 3..4
UINT16 LlRetryBufferConsumed : 8; // bit 5..12
UINT16 Reserved : 3; // bit 13..15
} Bits;
UINT16 Uint16;
} CXL_LINK_LAYER_CONTROL_AND_STATUS;
typedef union {
struct {
UINT64 CacheReqCredits : 10; // bit 0..9
UINT64 CacheRspCredits : 10; // bit 10..19
UINT64 CacheDataCredits : 10; // bit 20..29
UINT64 MemReqRspCredits : 10; // bit 30..39
UINT64 MemDataCredits : 10; // bit 40..49
} Bits;
UINT64 Uint64;
} CXL_LINK_LAYER_RX_CREDIT_CONTROL;
typedef union {
struct {
UINT64 CacheReqCredits : 10; // bit 0..9
UINT64 CacheRspCredits : 10; // bit 10..19
UINT64 CacheDataCredits : 10; // bit 20..29
UINT64 MemReqRspCredits : 10; // bit 30..39
UINT64 MemDataCredits : 10; // bit 40..49
} Bits;
UINT64 Uint64;
} CXL_LINK_LAYER_RX_CREDIT_RETURN_STATUS;
typedef union {
struct {
UINT64 CacheReqCredits : 10; // bit 0..9
UINT64 CacheRspCredits : 10; // bit 10..19
UINT64 CacheDataCredits : 10; // bit 20..29
UINT64 MemReqRspCredits : 10; // bit 30..39
UINT64 MemDataCredits : 10; // bit 40..49
} Bits;
UINT64 Uint64;
} CXL_LINK_LAYER_TX_CREDIT_STATUS;
typedef union {
struct {
UINT32 AckForceThreshold : 8; // bit 0..7
UINT32 AckFLushRetimer : 10; // bit 8..17
} Bits;
UINT32 Uint32;
} CXL_LINK_LAYER_ACK_TIMER_CONTROL;
typedef union {
struct {
UINT32 MdhDisable : 1; // bit 0..0
UINT32 Reserved : 31; // bit 1..31
} Bits;
UINT32 Uint32;
} CXL_LINK_LAYER_DEFEATURE;
typedef struct {
CXL_LINK_LAYER_CAPABILITY LinkLayerCapability;
CXL_LINK_LAYER_CONTROL_AND_STATUS LinkLayerControlStatus;
CXL_LINK_LAYER_RX_CREDIT_CONTROL LinkLayerRxCreditControl;
CXL_LINK_LAYER_RX_CREDIT_RETURN_STATUS LinkLayerRxCreditReturnStatus;
CXL_LINK_LAYER_TX_CREDIT_STATUS LinkLayerTxCreditStatus;
CXL_LINK_LAYER_ACK_TIMER_CONTROL LinkLayerAckTimerControl;
CXL_LINK_LAYER_DEFEATURE LinkLayerDefeature;
} CXL_1_1_LINK_CAPABILITY_STRUCTURE;
#define CXL_IO_ARBITRATION_CONTROL_OFFSET 0x180
typedef union {
struct {
UINT32 Reserved1 : 4; // bit 0..3
UINT32 WeightedRoundRobinArbitrationWeight : 4; // bit 4..7
UINT32 Reserved2 : 24; // bit 8..31
} Bits;
UINT32 Uint32;
} CXL_IO_ARBITRATION_CONTROL;
#define CXL_CACHE_MEMORY_ARBITRATION_CONTROL_OFFSET 0x1C0
typedef union {
struct {
UINT32 Reserved1 : 4; // bit 0..3
UINT32 WeightedRoundRobinArbitrationWeight : 4; // bit 4..7
UINT32 Reserved2 : 24; // bit 8..31
} Bits;
UINT32 Uint32;
} CXL_CACHE_MEMORY_ARBITRATION_CONTROL;
///@}
/// The CXL.RCRB base register definition
/// Based on chapter 7.3 of Compute Express Link Specification Revision: 1.1
///@{
typedef union {
struct {
UINT64 RcrbEnable : 1; // bit 0..0
UINT64 Reserved : 12; // bit 1..12
UINT64 RcrbBaseAddress : 51; // bit 13..63
} Bits;
UINT64 Uint64;
} CXL_RCRB_BASE;
///@}
#pragma pack()
//
// CXL Downstream / Upstream Port RCRB space register offsets
// Compute Express Link Specification Revision: 1.1 - Chapter 7.2.1.1 - Figure 97
//
#define CXL_PORT_RCRB_MEMBAR0_LOW_OFFSET 0x010
#define CXL_PORT_RCRB_MEMBAR0_HIGH_OFFSET 0x014
#define CXL_PORT_RCRB_EXTENDED_CAPABILITY_BASE_OFFSET 0x100
#endif