pcie device enumeration

2 files changed, 51 insertions, 2 deletions

diff --git a/kernel/include/mcfg.h b/kernel/include/mcfg.h
index 9f062c0..2e238cf 100644
--- a/kernel/include/mcfg.h
+++ b/kernel/include/mcfg.h
@@ -6,8 +6,8 @@
 struct config_space_mcfgt {
 	uint64_t base_addr;
 	uint16_t pci_seg_group;
-	uint8_t start_pci_bus;
-	uint8_t end_pci_bus;
+	uint8_t start_bus;
+	uint8_t end_bus;
 	uint32_t reserved;
 } __attribute__((packed));
 typedef struct config_space_mcfgt config_space_mcfgt;
diff --git a/kernel/include/pci.h b/kernel/include/pci.h
new file mode 100644
index 0000000..01d97fc
--- /dev/null
+++ b/kernel/include/pci.h
@@ -0,0 +1,49 @@
+#ifndef PCI_H
+#define PCI_H
+
+#include <types.h>
+
+struct pci_dev {
+	uint16_t vendor_id;
+	uint16_t device_id;
+	uint16_t command;
+	uint16_t status;
+	uint8_t revision_id;
+	uint8_t progif;
+	uint8_t subclass;
+	uint8_t class_;
+	uint8_t cache_line_size;
+	uint8_t latency_timer;
+	uint8_t header_type;
+	uint8_t bist;
+};
+typedef struct pci_dev pci_dev;
+
+const char *class_string[] = {
+	"Unclassified",
+	"Mass Storage Controller",
+	"Network Controller",
+	"Display Controller",
+	"Multimedia Controller",
+	"Memory Controller",
+	"Bridge",
+	"Simple Communication Controller",
+	"Base System Peripheral",
+	"Input Device Controller",
+	"Docking Station",
+	"Processor",
+	"Serial Bus Controller",
+	"Wireless Controller",
+	"Intelligent Controller",
+	"Satellite Communication Controller",
+	"Encryption Controller",
+	"Signal Processing Controller",
+	"Processing Accelerator",
+	"Non-Essential Instrumentation",
+};
+
+const char *subclass_string[] = {
+
+};
+
+#endif