/*
** Copyright 2002-2003, Michael Noisternig. All rights reserved.
** Distributed under the terms of the NewOS License.
*/
#ifndef _PCI_H_
#define _PCI_H_
#include "type.h"
typedef struct {
    char prefetchable;
    uint32_t address;
    uint8_t type;
} bar_t;
#define INPUT_OUTPUT	0
#define MEMORY_MAPPED	1

struct device_desc_pci {
    uint8_t bus;
    uint8_t device;
    uint8_t function;
    uint16_t vendor_id;
    uint16_t device_id;
    uint8_t class_id;
    uint8_t subclass_id;
    uint8_t interface_id;
    uint8_t revision_id;
    uint32_t interrupt;
    uint32_t port_base;
	uint32_t type;
};
typedef struct device_desc_pci pci_dev_t;

enum DEVICES_TYPE {
    DEVICE_STORAGE = (1 << 0),
    DEVICE_SOUND = (1 << 1),
    DEVICE_INPUT_SYSTEMS = (1 << 2),
    DEVICE_NETWORK = (1 << 3),
    DEVICE_DISPLAY = (1 << 4),
    DEVICE_BUS_CONTROLLER = (1 << 5),
    DEVICE_BRIDGE = (1 << 6),
    DEVICE_CHAR = (1 << 7),
    DEVICE_RTC = (1 << 8),
    DEVICE_UNKNOWN = (1 << 9),
};

uint32_t pci_read(uint16_t bus, uint16_t device, uint16_t function, uint32_t offset);
void pci_write(uint8_t bus, uint8_t device, uint8_t function, uint8_t offset, uint32_t data);
pci_dev_t pci_get_device_desriptor(uint8_t bus, uint8_t device, uint8_t function);
pci_dev_t* get_pci_bga();
uint32_t pci_read_bar(pci_dev_t* pci_dev, int bar_id);

#define NR_PCI_DEV  8

#endif