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-rw-r--r--MdePkg/Include/IndustryStandard/PciExpress40.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/MdePkg/Include/IndustryStandard/PciExpress40.h b/MdePkg/Include/IndustryStandard/PciExpress40.h
index 2a6a0f2..2b2970f 100644
--- a/MdePkg/Include/IndustryStandard/PciExpress40.h
+++ b/MdePkg/Include/IndustryStandard/PciExpress40.h
@@ -82,6 +82,8 @@ typedef struct {
/// The Designated Vendor Specific Capability definitions
/// Based on section 7.9.6 of PCI Express Base Specification 4.0.
///@{
+#define PCI_EXPRESS_EXTENDED_CAPABILITY_DESIGNATED_VENDOR_SPECIFIC_ID 0x0023
+
typedef union {
struct {
UINT32 DvsecVendorId : 16; // bit 0..15