parsing pcie MCFG table

1 files changed, 31 insertions, 0 deletions

diff --git a/kernel/include/mcfg.h b/kernel/include/mcfg.h
new file mode 100644
index 0000000..9f062c0
--- /dev/null
+++ b/kernel/include/mcfg.h
@@ -0,0 +1,31 @@
+#ifndef MCFG_H
+#define MCFG_H
+
+#include <types.h>
+
+struct config_space_mcfgt {
+	uint64_t base_addr;
+	uint16_t pci_seg_group;
+	uint8_t start_pci_bus;
+	uint8_t end_pci_bus;
+	uint32_t reserved;
+} __attribute__((packed));
+typedef struct config_space_mcfgt config_space_mcfgt;
+
+struct MCFGT {
+	uint32_t signature;
+	uint32_t length;
+	uint8_t revision;
+	uint8_t checksum;
+	uint8_t oem_id[6];
+	uint64_t oem_table_id;
+	uint32_t oem_table_revision;
+	uint32_t creator_id;
+	uint32_t creator_revision;
+	uint64_t reserved;
+} __attribute__((packed));
+typedef struct MCFGT MCFGT;
+
+void read_mcfgt(void);
+
+#endif