pci to pci bridge driver

The following is an article I recently read when I wrote a pci driver. I hope it will be helpful to you. Hi, I was a beginner in linux.The driver is also difficult, and many people are asked about it shamelessly. I would like to express my gratitude and sorry to these experts, especially unix1998. The level of helplessness is limited. It may be wrong in some plac

PCI-E X1 can meet the requirements of mainstream sound effect chip, Nic chip and storage equipment for data transmission bandwidth, however, it is far from able to meet the data transmission bandwidth requirements of graphics chips. Therefore, the PCI-E interface used to replace the AGP interface is x16 in width and can provide 8 Gbit/s bandwidth, far exceeding the 2.1 Gbit/s bandwidth of the AGP 8x.

writes data to memory through a DMA controller, and when DMA posts data to bridge 2, it releases BUS1, completes the DMA operation, and submits a DMA completion interrupt request to the processor. The driver on the processor side calls the Interrupt service program after receiving the interrupt request, but the data written by device 2 may not have reached memory yet, which is the "interrupt async" problem

PCI is the abbreviation of Peripheral Component Interconnect (standard for connecting peripheral components). It is the most widely used interface in PCs, and is available in almost all motherboard products. PCI slots are also the most frequently used slots on the motherboard. on popular desktop boards, The ATX motherboard generally has 5 ~ Six PCI slots, and a s

Label: style blog HTTP color ar use SP strong data Reprinted please indicate the source: http://blog.csdn.net/lg2lh/article/details/8042008 The basic protocol of PCI is not introduced here. Because the General chip protocols are well integrated, I only need to know about them. I don't need to know the protocol too much because I don't have to do chips. The explanation here is based on the PLX 9054 (9052) chip. I am only a beginner and hope to cr

the hypervisor or through the Hyperviso R to a user space emulation). But assigning devices to specific guests was also useful when those devices cannot was shared. For example, if a system included multiple video adapters, those adapters could is passed through to unique guest domains.Finally, there may is specialized PCI devices that only one guest domain uses or devices that the hypervisor does not supp ORT and therefore should is passed through t

"I know bios"->pci (pic) Lightseed 2009-5-13 1, PCI overview Note: The whole article is discussed in the PIC (8259) in the process of the process. When the PCI devices are plugged into the motherboard (which is included in the South Bridge), it wants to communicate with other devices, or let the CPU do it like this, o

;/sys/bus/pci/devices/0000: 0d: 00.0/driver/unbind Echo 1180 e823>/sys/bus/pci/drivers/vfio-pci/new_id Echo response :0:00. 0>/sys/bus/pci/devices/response :0:00. 0/driver/unbind Echo 8086 0085>/sys/bus/

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 inter

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

During this period of time, we need to get the debugging and driver development work related to PCI Express. The old rule is that we should first look for information on the Internet. This kind of stuff is quite rare and we have already bought a book, I plan to summarize it by myself. This article describes how to configure the PCI bus in PowerPC. PowerPC uses a

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.

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