linux怎么查看pci设备（Linux中的PCI驱动总结）

l Pci驱动注册Pci_register_driver(struct pci_driver *drv)，今天小编就来说说关于linux怎么查看pci设备?下面更多详细答案一起来看看吧!

linux怎么查看pci设备

l Pci驱动注册

Pci_register_driver(struct pci_driver *drv)

Static struct pci_driver pci_driver= {

.name = DRV_NAME,

.id_table = pci_pci_tbl,

.probe = pci_init_one,

.remove = _devexit_p(pci_remove_one),

};

l Pci配置空间

Pci_read_config_byte/word/dword(struct pci_dev *pdev,int offset,int *value)

Pci_write_config_byte/word/dword(struct pci_dev *pdev,int offset,int *value)

l Pci的I/O和内存空间

Pci_resource_start(struct pci_dev *dev,int bar) bar的范围0-5；功能：从配置区相应寄存器得到I/O区域的基址

Pci_resource_length(struct pci_dev *dev,int bar)bar的范围0-5；功能：从配置区相应寄存器得到I/O区域的内存区域长度

Request_mem_fegion(io_base,length,name)申请I/O端口

Request_mem_region(io_base,length,name)释放I/O端口