List PCI devices on boot

kernel/device/pci.h

@@ -0,0 +1,60 @@
+#ifndef _KERNEL_DEVICE_PCI_H
+#define _KERNEL_DEVICE_PCI_H
+
+#include <libk/std.h>
+
+#define PCI_CONFIG_ADDR 0xCF8
+#define PCI_CONFIG_DATA 0xCFC
+
+#define PCI_VENDOR_ID   0x00
+#define PCI_DEVICE_ID   0x02
+#define PCI_COMMAND     0x04
+#define PCI_STATUS      0x06
+#define PCI_REVISION_ID 0x08
+#define PCI_PROG_IF     0x09
+#define PCI_SUBCLASS    0x0A
+#define PCI_CLASS       0x0B
+#define PCI_CACHELINE   0x0C
+#define PCI_LATENCY     0x0D
+#define PCI_HEADER_TYPE 0x0E
+#define PCI_BIST        0x0F
+#define PCI_BAR0        0x10
+
+struct pci_dev {
+  uint8_t bus;
+  uint8_t slot;
+  uint8_t func;
+  uint16_t vendor;
+  uint16_t device;
+  uint8_t classcode;
+  uint8_t subclass;
+};
+
+struct pci_vendor {
+  uint16_t id;
+  const char* name;
+};
+
+struct pci_device_id {
+  uint16_t vendor_id;
+  uint16_t device_id;
+  const char* name;
+};
+
+struct pci_class {
+  uint8_t class;
+  uint8_t subclass;
+  const char* name;
+};
+
+typedef void (*pci_cb_func_t) (struct pci_dev pci_dev);
+
+void pci_init (void);
+
+extern const struct pci_vendor pci_vendors[];
+
+extern const struct pci_device_id pci_device_names[];
+
+extern const struct pci_class pci_classes[];
+
+#endif // _KERNEL_DEVICE_PCI_H