void pci_init();
void pci_add_specific(int card, uint8_t (*read)(int func, int addr, void *priv), void (*write)(int func, int addr, uint8_t val, void *priv), void *priv);
void pci_add(uint8_t (*read)(int func, int addr, void *priv), void (*write)(int func, int addr, uint8_t val, void *priv), void *priv);

#define PCI_REG_COMMAND 0x04

#define PCI_COMMAND_IO  0x01
#define PCI_COMMAND_MEM 0x02