22 typedef struct QPCIBus QPCIBus;  typedef
26 struct QPCIBus {  struct
27     uint8_t (*pio_readb)(QPCIBus *bus, uint32_t addr);  argument
28     uint16_t (*pio_readw)(QPCIBus *bus, uint32_t addr);  argument
29     uint32_t (*pio_readl)(QPCIBus *bus, uint32_t addr);  argument
30     uint64_t (*pio_readq)(QPCIBus *bus, uint32_t addr);  argument
32     void (*pio_writeb)(QPCIBus *bus, uint32_t addr, uint8_t value);  argument
33     void (*pio_writew)(QPCIBus *bus, uint32_t addr, uint16_t value);  argument
34     void (*pio_writel)(QPCIBus *bus, uint32_t addr, uint32_t value);  argument
35     void (*pio_writeq)(QPCIBus *bus, uint32_t addr, uint64_t value);  argument
37     void (*memread)(QPCIBus *bus, uint32_t addr, void *buf, size_t len);  argument
38     void (*memwrite)(QPCIBus *bus, uint32_t addr, const void *buf, size_t len);  argument
40     uint8_t (*config_readb)(QPCIBus *bus, int devfn, uint8_t offset);  argument
41     uint16_t (*config_readw)(QPCIBus *bus, int devfn, uint8_t offset);  argument
42     uint32_t (*config_readl)(QPCIBus *bus, int devfn, uint8_t offset);  argument
44     void (*config_writeb)(QPCIBus *bus, int devfn,  argument
46     void (*config_writew)(QPCIBus *bus, int devfn,  argument
48     void (*config_writel)(QPCIBus *bus, int devfn,  argument
66     QPCIBus *bus;  argument