问pci_find_device函数返回值的结构体说明？？

内核里pci_find_device函数调用返回值的那个
pci_dev结构体中包含了哪些内容？
望高手指教！谢谢

谢谢两位

在做linux的驱动，你想知道了东西可以到linux 的源代码中得到相关说明！！

struct pci_dev {
struct list_head global_list; /* node in list of all PCI devices */
struct list_head bus_list; /* node in per-bus list */
struct pci_bus *bus; /* bus this device is on */
struct pci_bus *subordinate; /* bus this device bridges to */

void *sysdata; /* hook for sys-specific extension */
struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */

unsigned int devfn; /* encoded device & function index */
unsigned short vendor;
unsigned short device;
unsigned short subsystem_vendor;
unsigned short subsystem_device;
unsigned int class; /* 3 bytes: (base,sub,prog-if) */
u8 hdr_type; /* PCI header type (`multi\' flag masked out) */
u8 rom_base_reg; /* which config register controls the ROM */

struct pci_driver *driver; /* which driver has allocated this device */
void *driver_data; /* data private to the driver */
u64 dma_mask; /* Mask of the bits of bus address this
  device implements.  Normally this is
  0xffffffff.  You only need to change
  this if your device has broken DMA
  or supports 64-bit transfers.  */

u32             current_state;  /* Current operating state. In ACPI-speak,
  this is D0-D3, D0 being fully functional,
  and D3 being off. */

/* device is compatible with these IDs */
unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE];
unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE];

/*
* Instead of touching interrupt line and base address registers
* directly, use the values stored here. They might be different!
*/
unsigned int irq;
struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
struct resource dma_resource[DEVICE_COUNT_DMA];
struct resource irq_resource[DEVICE_COUNT_IRQ];

char name[80]; /* device name */
char slot_name[8]; /* slot name */
int active; /* ISAPnP: device is active */
int ro; /* ISAPnP: read only */
unsigned short regs; /* ISAPnP: supported registers */

int (*prepare)(struct pci_dev *dev); /* ISAPnP hooks */
int (*activate)(struct pci_dev *dev);
int (*deactivate)(struct pci_dev *dev);
};