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4399 trochtova 1 
#ifndef PCI_H
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#define PCI_H
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//#include <arch/types.h>
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#include <adt/list.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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struct pci_drv;
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struct pci_dev;
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struct pci_bus;
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struct pci_drv_ops;
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typedef struct pci_drv pci_drv_t;
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typedef struct pci_dev pci_dev_t;
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typedef struct pci_bus pci_bus_t;
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typedef struct pci_drv_ops pci_drv_ops_t;
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struct pci_drv {
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    link_t link;
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    int vendor_id;
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    int device_id; 
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    pci_drv_ops_t *ops;
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};
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struct pci_dev{
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    link_t link;
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    pci_bus_t *bus;
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    int dev;
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    int fn;
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    int vendor_id;
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    int device_id;
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    pci_drv_t *driver; 
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};
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struct pci_drv_ops {
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    int (*add_device)(pci_dev_t *dev);
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};
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struct pci_bus {
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    link_t link;
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    int num;
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    // architecture-specific usage
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    void *data;
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};
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void pci_bus_register(pci_bus_t *bus);
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void pci_device_register(pci_dev_t *dev);
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void pci_driver_register(pci_drv_t *drv);
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void pci_bus_scan(pci_bus_t *bus);
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static inline pci_bus_t* pci_alloc_bus()
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{
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    pci_bus_t *bus = (pci_bus_t *)malloc(sizeof(pci_bus_t));
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    link_initialize(&bus->link);
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    bus->num = 0;
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    bus->data = NULL;
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    return bus;
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}
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// arch. spec. initialization of pci bus structure - of its data member
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void pci_init_bus_data(pci_bus_t *bus, pci_bus_t *parent);
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static inline void pci_init_bus(pci_bus_t *bus, pci_bus_t *parent, int bus_num)
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{
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    bus->num = bus_num;
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    pci_init_bus_data(bus, parent);
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}
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static inline void pci_free_bus(pci_bus_t *bus)
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{
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    free(bus);
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}
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static inline pci_dev_t* pci_alloc_dev()
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{
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    pci_dev_t *dev = (pci_dev_t *)malloc(sizeof(pci_dev_t));
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    bzero(dev, sizeof(pci_dev_t));
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    link_initialize(&dev->link);   
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    return dev;
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}
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static inline void pci_init_dev(pci_dev_t *dev, pci_bus_t *bus, int devnum, int fn)
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{
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    dev->bus = bus;
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    dev->dev = devnum;
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    dev->fn = fn;
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}
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static inline void pci_free_dev(pci_dev_t *dev)
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{
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    free(dev);
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}
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#endif