Itis the technical realization of the concept of a device file.The access to an I/O device is done through a device file. In case of the peripheral device, the device driver performsactions like reading/writing data to the device, receiving/sending interrupts(interrupt), and providing capabilities and statistics to the operating system.Ī driver handles the communication between the user-space and the kernel.
Thenotation of device drivers is according to the BUS type of the peripheral device.The device drivers handle cases of request for I/O, memory mapping, buffering,and interrupts. The device driver accomplishes two main functions: itprovides access to the peripheral device, and it controls the peripheral device.Each type of peripheral device has a corresponding device driver. The device driver for each peripheral device is the setup and control softwarefor a peripheral device. This involves: the definition of device drivers and bus-type-specific functions the definition of each device type (peripheral devices) the definition of the device driver interfaces, which reveals the resourcesavailable for each type of device (memory, I/O, interrupt) the definition of the device driver state-sensitive functions The driver is technically realized as an independent kernel component. The device driver is the technical realization of the concept of a device.A device driver consists of the following: driver descriptor bus-specific functions a driver for each peripheral device
0 kommentar(er)
