win7 drivers

In the fourth chapter of the book "Linux device Drivers", we specialize in the debugging technology in driver development.PRINTK is just one of the techniques that requires PRINTK to print messages and write to files on disk, which slows down the entire code execution speed.There are also debugging techniques, and the effect on Code execution speed is smaller than prink.In this, we can have the driver create the file in the proc file system and write

The Windows 7 system greatly enhances the compatibility of the surrounding hardware, itself integrates a lot of drivers, including the printer, scanner, camera, mobile phone, MP3, MP4 player, etc. direct recognition, commonly used models can be used without the installation of Third-party drivers can automatically identify the use. However, occasionally unrecognized hardware, but also to install the driver,

question: I want to know what modules are built into the kernel in the Linux system and what parameters each module has. Is there a way to get a list of built-in modules and device drivers, along with their detailed information? The modern Linux kernel is growing rapidly over time to support a large number of hardware, file systems, and network functions. During this time, the introduction of the Loadable module (loadable kernel modules,[lkm]) preven

With the release of Linux2.6, the drivers for each device are rewritten to varying degrees due to the new changes made by the 2.6 kernel. For the convenience of Linux enthusiasts, I put my own share out of this worthless file. This article lists the vast majority of changes in the 2.6 kernel with previous versions, but unfortunately the use of individual functions is not listed in detail due to limited time and effort. 1. Use the new entranceMust incl

); Read-copy-update Read-copy-update (RCU) is also an advanced mutex mechanism. Rarely used in drivers Http://www.rdrop.com/users/paulmck/rclock/intro/rclock_intro.html Optimized for situations where reads are frequent and rarely written The protected resource should be accessed through a pointer When the data structure needs to be modified, the write thread replicates first,

One key to developing the Microsoft Hyper-V platform is to increase the performance of virtual machines by interacting with hardware. However, many system administrators are frustrated by the performance levels directly carried by Hyper-V. In fact, these performance ultimately involves understanding the I/O stack of the Virtual Machine and how it interacts with the Hyper-V hypervisor. The management program provides a fully integrated driver, called the synthesis driver, which includes 80% of th

. Specifically: Fill in a fbinfo Structure Use reigster_framebuffer (fbinfo *) to register the fbinfo structure to the kernel For the fbinfo structure, the most important thing is its fs_ops member. You need to implement interfaces in fs_ops for specific devices. Whether to use interrupt handling Memory Access If the video card does not have its own video memory, the system memory is allocated as the video memory. The graphics card comes with a vide

Http://www.driverdevelop.com/ Subtitle: Author: Yang Jun Article Source: site original hits:10975 updated on: Editor's note: The content of this article is mainly translated by DriverStudio's random documents. We recommend that you use the following software: DriverStudio2.5, Visual Studio6.0, and Windows 2000 DDK. This document assumes that you have installed these software. DriverStudio2.5 can be downloaded to the test version from the driver deve

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

external representation in the Code, the Code does not need to be changed even if the internal data type changes again in the future. Common macros are: The official registry cannot statically allocate these additional available device numbers, which can only be used when handling special requirements for device numbers. In fact, for assigning device numbers and creating device files, it is more likely to process device files in a highly dynamic manner. 3.2 dynamically allocat

Document directory A quick tour of the hardware The various modules and their interrelations How URBS keep it all together Input Handling Even though UNIX traditionally considers a device as either a "char device" or a "Block device" (as outlined by the 'C' or 'B' in their/DevEntry points), new classes of device are being introduced as technology advances. One of such classes is that of ''usb devices ''. An USB device is still, at its lowest levels, a ''char devic'' or a ''block devic''

of the LCD controller. Specifically: Fill in a fbinfo Structure Use reigster_framebuffer (fbinfo *) to register the fbinfo structure to the kernel For the fbinfo structure, the most important thing is its fs_ops member. You need to implement interfaces in fs_ops for specific devices. Whether to use interrupt handling Memory Access If the video card does not have its own video memory, the system memory is allocated as the video memory. The graphics card comes with a vide

Under Linux, the drive device has character device driver, block device driver and network device drive three kinds, before learning the character device driver, now began to learn block device driver. First of all to compare the two device drivers why not pass, why to split into different types of drivers. Take an example to illustrate the need to introduce block device drivers:If you construct the drive i

); The filter function is called when the kernel is about to generate an event for the specified Kobject, and if 0 is returned, no event is generated Bus, device, and driver Bus A bus is a channel between a processor and one or more devices struct BUS_TYPE Char *name; struct subsystem Subsys; struct Kset drivers; struct Kse

The complex device drivers mentioned here involve PCI, USB, network devices, block devices, and so on (strictly speaking, these devices are conceptually not parallel, for example, a character device is tied to a block device, and a PCI, USB device, etc. may be part of a character device). Some of the more complex data structures and program structures associated with specific device types are also involved in the