virtio drivers

unknown device and right-click access properties.In the Properties window, click the Details tab and select a device instance id from the drop-down list. A letter or digit string, similarPCI/ven_1217 dev_7130 subsys_012f1025 rev_01/4 6b16d5b 0 33f0 is the identification mark of the device. We only need to extract vendor ID (prefix is VEN) and DeviceID (prefix: Dev ). In this example, the supplier ID is 1217 and the device ID is 7130. Using the identified numbers, you can use some resourc

version When the device driver needs to support different kernel versions at the same time, in the compilation phase, the kernel module needs to know the version of the currently used kernel source code to use the corresponding kernel API. In the 2.4 and 2.6 kernels, the source code header file Linux/version. H is defined as follows: Linux_version_code: the binary representation of the kernel version. Each of the primary, slave, and revision versions corresponds to one byte; Kernel_version (Maj

Address: http://blog.csdn.net/gaoling179/article/details/6284770 In the process of developing a DSP using Visual DSP ++, you can quickly develop applications by applying the device drivers and system service programs that come with the system software without writing the underlying drivers. (1) Adi has constructed all the drivers and services related to DSP Chi

the Linux structure for continued use.Overall analysis-ReconstructionIf your project does not have a tight schedule, and you can use the portability code repeatedly for future projects, you will analyze the current RTOS application structure based on the time, and how to map them to the Linux structure. For RTOS application code, you need to consider ing RTOS tasks one by one to the viability of Linux Process-based threads, and whether to re-allocate RTOS applications to multiple Linux processe

In this Linux-driven development, a network approach is introduced to introduce two ways to drive development:I. Driver compilation to the kernel1. First select a location to place the driver code, for example: DRIVERS/CHAR/XXX.C2. Add the following to the Drivers/char/kconfig file:Menu "XXX Support"Config xxxTriState "XXX Support"---help---XXX use GPIO as IR input.If you want XXX support, you should say Y

Compiling of Linux kernel modules and drivers-general Linux technology-Linux programming and kernel information. For details, refer to the following. The Linux kernel is an integral structure, so it is very difficult to add anything to or delete some features to the kernel. The kernel mechanism is introduced to solve this problem. This allows you to dynamically add or delete modules in the kernel. The module is not compiled in the kernel, so the kerne

The following articles mainly introduce three different types of JDBC drivers in Oracle databases. We all know that jdbc drivers in Oracle mainly include the following three types: 1. jdbc oci: oci is the abbreviation of Oracle call interface, which is similar to the traditional ODBC driver. Because it requires Oracle Call Interface and Net8, it needs to install the client software on the machine that runs

Recently, the focus is on home tickets and renting a house in the coming year. Ah, people who are in Beijing are depressed, and every time they get entangled in things. Do an advertisement first, our Su Qing classmates finally three times opened Bo, please visit: http://rebeccasu.blog.sohu.com However, we were lucky enough to have a machine. With safe360, rising KaKa was able to launch the game. After restarting it for n times, it was not effective. Finally, we finally worked with a powerful hum

Financial small white is just exposure to investment and financial management, but not very well know how to invest in financial skills and methods, and investment in old drivers of different types of investment and financial management, the income of financial management, investment specific background and methods have a deep grasp, should be, the investment of old drivers have more ways in financial manag

pci driver structures: the new style Driver (that is, the pci layer is used for a large number of device detection)Working and supports hot swapping) and old-style drivers (that is, the driver itself detects the device ). Unless you have a good reason, do not use the old style to write the driver. When the driver finds the driver, perform the following steps:Enable DeviceAccess device configuration spaceDetect Device resources (such as base address a

Create a new directory named usbip in "$ (KERNELSOURCE)/drivers/usb/" directory, copy all driver files into that directory. The directory file list below:| USB IP| ---- Stub. h| ---- Stub_tx.c| ---- Stub_rx.c| ---- Stub_dev.c| ---- Stub_main.c| ---- Usbip_common.h| ---- Usbip_common.c| ---- Usbip_event.c| ---- Vhci. h| ---- Vhci_hcd.c| ---- Vhci_rx.c| ---- Vhci_tx.c| ---- Vhci_sysfs.c Create a Kconfig file in "usbip" directory with contents below:##

Note: a good article on understanding PCI devices and PCI drivers To understand the Linux PCI device driver, first understand that the so-called Linux PCI device driver actually includes the Linux PCI device driver and the device driver. I do not know whether the reader understands this sentence. I think this sentence is very important. For drivers like PCI and USB, we must understand this concept, in order

How to make the system do not load certain hardware drivers, such as sound card drivers (I am a server)Is there any other elegant way to re-compile the kernel?Debian:/sys/devices # lsmodModule size usedNls_utf8 1760 1CIFS 208948 1Nls_base 6820 2 nls_utf8, CIFSNFSD 186928 1Lock 54568 1 nfsdNfs_acl 2912 1 nfsdAuth_rpcgss 33952 1 nfsdSunRPC 162528 4 NFSD, lockd, nfs_acl, auth_rpcgssExportfs 3936 1 nfsdIPv6 235

The learning of Linux device drivers is a huge project. Readers must first master the following basics.1. writing Linux device drivers requires engineers to have a good hardware foundation, understand the reading and writing methods of SRAM, Flash, SDRAM, disks, and interfaces of UART, I2C, USB, and other devices, the principle of polling, interruption, DMA, the working mode of the PCI bus, and the memory m

　　 Step 2: Create the int init_test (void) function) Register the device here: Result = register_chrdev (254, "test", test_fops ); 　　 (2) set test. copy c to the/uclinux/linux/drivers/char directory, and mem in the/uclinux/linux/drivers/char directory. in c, add the following code to the int chr_dev_init () function: # Ifdef CONFIG_TESTDRIVE Init_test (); # Endif 　　

Recently looking at the driving model, is the more confused, the previous contact is more than a few character drivers, the character-driven framework has a certain understanding. Later, because I want to realize the creation of the device file in the drive, and understand again, the Sysfs file system and the Udev equipment file system inevitably involve the driving model. However, it was found that the driving model had nothing to do with the previou

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Relationship between Linux Device Drivers and the entire hardware System 1. device classification and features the hardware of a computer system consists of CPU, memory, and peripherals. With the development of the IC (Integratedcircuit) manufacturing process, the current chip integration is getting higher and higher, often integrated into the CPU memory and... relationship between Linux Device Drivers and

the device here: Result = register_chrdev (254, "test", test_fops ); 　　 　　 (2) set test. copy c to the/uclinux/linux/drivers/char directory, and mem in the/uclinux/linux/drivers/char directory. in c, add the following code to the int chr_dev_init () function: # Ifdef CONFIG_TESTDRIVE Init_test (); # Endif 　　 (3) add the following code to Makefile in the/uclinux/linux/