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-rw-r--r--include/pci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/pci.h b/include/pci.h
index 5fb212cab1a..508f7bca81c 100644
--- a/include/pci.h
+++ b/include/pci.h
@@ -405,6 +405,7 @@
#define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
#define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
#define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
+#define PCI_MSI_FLAGS_MASKBIT 0x0100 /* Per-vector masking capable */
#define PCI_MSI_RFU 3 /* Rest of capability flags */
#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */