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-rw-r--r--sys/include/dev/pci/pciregs.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/include/dev/pci/pciregs.h b/sys/include/dev/pci/pciregs.h
index 763fade..f0ed4d2 100644
--- a/sys/include/dev/pci/pciregs.h
+++ b/sys/include/dev/pci/pciregs.h
@@ -69,4 +69,9 @@
#define PCI_CAP_MSI 0x05
#define PCI_CAP_MSIX 0x11
+/* PCI BAR defines */
+#define PCI_BAR_TYPE(BAR) ((BAR >> 1) & 3)
+#define PCI_BAR_32(BAR) (PCI_BAR_TYPE(BAR) == 0x0)
+#define PCI_BAR_64(BAR) (PCI_BAR_TYPE(BAR) == 0x2)
+
#endif /* _PCI_PCIREGS_H_ */