pci input device driver

address backfunc () as the parameter through deviceiocontrol () to the device driver. After the device driver obtains the callback function address, it stores it in a global variable (such as Callback) and calls the get_cur_thread_handle () function to obtain the handle of Its Application Thread, and save the handle

Transferred from: http://blog.csdn.net/droidphone/article/details/23367051/Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.Directory (?) [-] Hardware structure Working time series Software architecture SPI Controller Driver SPI Universal Interface Package layer SPI Protocol Driver SPI Universal

Platform-related fields are often seen in device drivers and distributed across multiple corners of the driver. This is also an important mechanism in the 2.6 kernel, it will be helpful for analyzing drivers in the future: In the linux2.6 device model, the three entities of bus, device, and

SPI is "Serial peripheral Interface" abbreviation, is a four-wire synchronous serial communication interface, used to connect microcontrollers, sensors, storage devices, SPI device sub-primary device and two from the device, for communication and control of the four lines are: CS Chip Selection Signal SCK Clock Signal Miso the data

-level data structures, or the interface between the hardware driver and the advanced data structure. The graphics console driver is a software device driver. One LCD controller driver loads and manages the display, and the graphic console colors the characters to be display

the value is smaller than the corresponding number of bytes. There is almost no actual number of bytes available or the signal is interrupted. If it fails,-1 is returned. If the value-1 is returned, see errno. You can confirm the return value in the actual device driver. Error code: -Eintr: The call is interrupted by the signal.-Eagain: When a file is opened using an unblockable (o_nonblock), read calls un

-s3c2410.c to register a i2c_adapter i2c_add_adapter () i2c_register_adapter () i2c_scan_static_board_info () list_for_each_entry (devinfo,__i2c_board_list, list) //using I2c_adapter and I2c_board_info constructs i2c_client NBSP;N bsp; if (Devinfo->busnum = = Adapter->nr !i2c_new_device (Adapter,devinfo->board _info)) nbSp;structi2c_client *client; client->adapter= adap;//Set I2c_client adapter client->addr= info->addr;//Set Device a

Article Title: Linux Device Driver framework, configuration files, and loading. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. This section describes the Linux Device Driver framew

driver similar to the USB function? The USB driver must at least implement the following functions: .Implement Part 0 of the endpoint in the USB Protocol and related to specific functions (the part that the UDC driver cannot help us complete ). For example, usb_req_get_descriptor and usb_req_get_configuration;After this function is completed, the USB host system

= "Igb_uio",. id_table = NULL,. Probe = Igbuio_pci_probe, . remove = Igbuio_pci_remove,};module_init (igbuio_pci_init_module); static int __initigbuio_pci_init_module (void) { int ret; ret = Igbuio_config_intr_mode (Intr_mode); if (Ret After the code has been collated, compared to the above simple UiO driver implementation, DPDK UiO implementation is also the first to initialize a pci_driver structure, in the Igbuio_pci_init_module () fun

---------------------------------------- This article is the original site, welcome to reprint! Reprinted please indicate the source: http://ericxiao.cublog.cn/http://blog.chinaunix.net/uid-20543183-id-1930820.html ------------------------------------------ 1: The forward tty name is derived from the abbreviation of byte by telex. Linux represents various terminals. Terminals usually correspond to hardware. For example, it corresponds to the keyboard and mouse of the

Disk_stats dkstats;#endifstruct Work_struct async_notify;}; This structure is a dynamically allocated structure. Some special processing of the kernel is required for initialization, and the driver cannot allocate the structure itself dynamically, but must be called.struct Gendisk *alloc_disk (int minors);//parameter is the number of secondary device numbers. After that, minors members cannot be ch

Input subsystem-architecture, driver, application, and input subsystemI. input subsystem architecture The input subsystem consists of drivers in the driver layer, input core in the

Relationship among bus, device, and driver Bus:As the connection channel between the host and peripherals, some buses are relatively standard and form many protocols. For examplePCI, USB, 1394, IIC, etc. Any device can select a suitable bus to connect to the host. Of course, the host may be the CPU itself. The memory is also connected to the host through the bus.

"Summary" What is UiO? UiO is the I/O running in user space, so why put I/O in user space?1, the reason that UiO appearsFirst, the hardware device can be divided into network equipment according to function, block device, character device, or according to the CPU connected to the way divided into PCI devices, USB devic