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Initial commit: SUB-OS 64-Bit Production Monolithic Operating System with LazyBox userland suite

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subhobhai943 committed 2026-08-16 21:23:52 +05:30
commit cd9c786d14
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include/drivers/pci.h
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#ifndef _DRIVERS_PCI_H
#define _DRIVERS_PCI_H
#include <stdint.h>
#include <stdbool.h>
#define PCI_CONFIG_ADDRESS 0xCF8
#define PCI_CONFIG_DATA 0xCFC
#define PCI_CLASS_NETWORK 0x02
#define PCI_CLASS_DISPLAY 0x03
#define PCI_CLASS_STORAGE 0x01
#define PCI_SUBCLASS_ETHERNET 0x00
#define PCI_SUBCLASS_IDE 0x01
#define PCI_SUBCLASS_SATA 0x06
typedef struct pci_device {
uint8_t bus;
uint8_t slot;
uint8_t function;
uint16_t vendor_id;
uint16_t device_id;
uint8_t class_id;
uint8_t subclass_id;
uint8_t prog_if;
uint8_t revision;
uint8_t irq;
uint32_t bar[6];
uint8_t bar_type[6];
struct pci_device* next;
} pci_device_t;
void pci_init(void);
pci_device_t* pci_get_devices(void);
pci_device_t* pci_find_device(uint16_t vendor_id, uint16_t device_id);
pci_device_t* pci_find_class(uint8_t class_id, uint8_t subclass_id);
void pci_enable_bus_mastering(pci_device_t* dev);
uint32_t pci_config_read32(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);
uint16_t pci_config_read16(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);
uint8_t pci_config_read8(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset);
void pci_config_write32(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint32_t val);
void pci_config_write16(uint8_t bus, uint8_t slot, uint8_t func, uint8_t offset, uint16_t val);
#endif // _DRIVERS_PCI_H