1. Key data structure PCI devices have three address spaces: PCI I/O space, PCI storage space, and PCI configuration space. The CPU can access all address spaces on the PCI device, where I/O space and storage space are provided to the device driver, while the configuration s
PCI device configuration space problems
Generally speaking, there are two methods to implement the PCI bus interface: one is to use a programmable device CPLD or FPGA, and the other is to use a dedicated interface chip, like the PCI9054 of PLX, ch365. The two have their own advantages and disadvantages. When using programmable devices, you can optimize the interface logic based on specific needs to achiev
This article introduces
Recently, CPCI was used in the project, and the information about PCI was collected online. CPCI is a subset of PCI. The bridge chip used is divided into two types: master and slave. As for PCI, I will describe it as follows:
With the rapid development of Windows Graphical User interfaces and the wide application of multimedia
Overviewthe kernel's PCI subsystem, or PCI layer, provides a number of common features for different devices to simplify various device drivers. The important structure of the PCI layer is as follows: pci_device_iddevice identification, based on the ID defined by the PCI flag, instead of Linux Local. Pci_deva net_devi
Keywords: PCI bus configuration space Operating SystemSince the launch of PCI bus, it has been favored by many manufacturers with its unique characteristics and has become the mainstream of computer extended bus. At present, many technical personnel in China have the ability to develop PCI bus interface equipment. However, the Programming Technology of
Since the introduction of PCI bus, its unique characteristics have been favored by many vendors, which has become the mainstream of computer extension bus. At present, many domestic technical personnel have the ability to develop PCI bus interface equipment. However, the PCI bus programming technology, that is, the operation of the
PCI is a widely used bus standard. It provides many new features that are better than other bus standards (such as EISA) and has become the most widely used computer system, and the most common bus standard. Linux's inner nuclear energy well supports the PCI bus. This paper focuses on the intel 386 architecture and discusses the basic framework for developing the PCI
PCI, CPCI, cpcieDifferences and features
CPCI bus
• As a local bus of the processor system, the PCI bus is designed to connect external devices, rather than the system bus used as the processor, to connect the cache and primary storage.
• (1) PCI bus space and processor space isolation
• (2)ScalabilityBridge
• (3)Dynamic configuration mechanism plug-and-play
• (
PCI is a widely used bus standard, it provides many superior to other bus standards (such as EISA) new features, has become the most widely used in computer systems, and the most common bus standards. Linux kernel can better support PCI bus, this paper based on the Intel 386 architecture, discusses the development of PCI device driver under Linux basic framework.
Tags: debuggingJust looking at the WinDbg in the hardware debugging of what the extended command, let me recall a job in the actual transaction.In the development process of XHCI usb3.0/3.1 IP project, we need to obtain the PCIe configuration space information similar to the actual product for the comparison reference.At the time, the XHCI host controller for similar products was connected to the SOC system through a PCIe port, and the bare metal code of the arm SOC was written to read the PCIe
Http://pic.dhe.ibm.com/infocenter/lnxinfo/v3r0m0/index.jsp? Topic=%2fliaat%2fliaatbppassthrougtask.htm
Http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM
1. Check whether the hardware supports iommu.
This is a hardware function. It is called VT-D in Intel architecture.
It can be seen from the BIOS that the positions of different versions are different.
My website is under security-> virtualization-> VT-D.
2. Configure the kernel and support iommu
There is such an option on I
PCI device driver development
1. Introduction to PCIThe PCI bus standard is a bus standard that connects external devices of the system. It is the most important bus in the PC and is actually the interface for interaction between various parts of the system. The transmission rate can reach 133 Mb/s. In the current PC architecture, almost all external devices use a variety of interface bus, which are connect
Recently, a FPGA was added to the PowerPC board, and the PCI-e was debugged when a PCI-E was used to connect the board. Since VxWorks itself has already written the driver, it can be called directly during use, but soon the problem arises: at first, the MMAP method was directly used to map the FPGA bus to the application's memory space and try to read and write. This method is relatively simple and does not
PCI that is, Peripheral Component Interconnect , Chinese meaning" peripheral device interconnection ", by pcisig (pCI Special Interest Group) A local parallel bus standard. Currently, electronic devices are widely used. The following describes PCI the working principle of the bus is helpful to everyone.
SafeNet, a Data Protection Enterprise, recently announced that its Luna EFT hardware security module HSM has reached the pci hsm Compliance Standard. SafeNet received this certification prior to the compliance requirements released by the Payment Card Industry Security Standards Board pci ssc, which required all financial and retail institutions to meet the level 1-12 certification standards set by
PCI driver programming steps
1. Copy ~ PCI header file in tornado \ target \ H \ DRV \ PCI directory, such as pciautoconfiglib. h and pciconfiglib. h
And ~ In the tornado \ target \ SRC \ DRV \ PCI directory, PCI autoconfiglib. C, pciconfiglib. C, and other
How does the PCI NIC work? When the motherboard network card is broken or the computer needs a dual NIC, we only need to buy a PCI card installed in the motherboard, no need to replace the motherboard. The following article mainly introduces the use of PCI card installation tutorial, there is a need to install PCI card
how Linux C calls the PCI Lib functionUnder Linux, you can access the configuration space of a PCI device through the "Setpci" and "SETPCI" commands, so can you use a program to access the PCI configuration space? The answer is certainly yes, there are multiple PCI libraries available under Linux for application access
IP address space of the PCI device
There are three address spaces on the PCI device:Pci I/O space, PCI storage space, and PCI configuration space. The CPU can access all the address spaces on the PCI device. The I/O space and storage space are provided to the device driver,
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