Generally, on the X86 platform, there are two main methods to access the registers in this range: 1. Configuration mechanism 1 # or configuration Mechanism 2 # Use the in/out command for access. Note that this method is different from the general in/out command to access the pci I/O space. It introduces the address port and data port. Configuration Mechanism 2 # used only on some specific motherboard. The new design should use configuration mechanism
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,
> Http://blog.chinaunix.net/u2/67414/showart_1657718.html
To see the actual running effect, we select the 8139too Nic as an example to crop the relevant code from the Linux driver of the NIC.The driver of a PCI device must describe itself to the PCI core in the kernel. At the same time, it must also tell the PCI core which devices can be driven by itself. The fo
This chapter is a supplement to the previous chapter. It mainly describes how the kernel associates the driver with the device.
Common Data Structures of PCI Layer
Struct pci_device_id {// device identifier is used to uniquely identify a device
Unsigned int vendor, device,
Subvendor, subdevice,
Class, class_mark;
Unsigned long driver_data;
};
Strcut pci_dev // PCI device, similar to the net_device structure
How to obtain the pci id of a device in Linux
Sometimes, you need to use the pci ID of the device during development. For example, to bind a network card with dpdk, you need to use the pci ID of the network card. The following methods can be used to obtain the pci ID.
1. Use the lspci command.
For example
. 0 USB contr
Sometimes, the development needs to use the device's PCI ID, such as the use of DPDK to bind a network card, need to use the PCI ID card. Here are some ways to get the PCI ID.1. Use the LSPCI command.Such as02:00.0 USB Controller:intel Corporation 82371ab/eb/mb PIIX4 usb02:01.0 Ethernet Controller:intel Corporation 82545EM Gi Gabit Ethernet Controller (Copper) (r
Failure phenomenon:
User indicates that one machine with wireless card, the consultation can remove the wireless card, the solid state drive
Solution:
To say mSATA and mini pci-e is not a new interface, but most of the previous integration in the system products, rarely contact. And recently with the advent of wireless and solid-state hard drives, causing concern.
Mini PCI-E Interface
One machine, such
See a post on Fpga4fun on PCI-E, simple and easy to understand, suitable for the introduction, specially moved overOriginal address: http://www.fpga4fun.com/PCI-Express.htmlObjective:As PCI Express becomes common place in high-end FPGAs, let's see how easy FPGA Vendors made the technology available.In particular, we look more closely at Xilinx ' s
First, IntroductionThe Linux PCI driver actually consists of two parts: the PCI driver and the device itself, and the PCI driver is usually the Linux kernel, and the device itself is the driver of the developer. There are three address spaces on the PCI device: I/O space, configuration space, memory space, the CPU can
1. Why Chinese Word Segmentation?
Words are the smallest meaningful linguistic component capable of independent activities. English words use spaces as natural delimiters, while Chinese words use words as the basic unit of writing, there is no obvious distinction between words. Therefore, Chinese word analysis is the basis and key for Chinese Information Processing.
The processing of Chinese in Lucene is based on the automatic
Http://hi.baidu.com/linux_kernel/blog/item/5c8510dfbfdb9b1363279884.html
In order to see the actual running effect, we select the 8139too Nic as an example. Program Cropping Code .The driver of a PCI device must describe itself to the PCI core in the kernel. At the same time, it must also tell the PCI core which devices can be driven by itself. The following des
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 mechanism called FDT flat device description
Oracle Solaris, pci dss, and solarisdss
Today on the Oracle official website to search for pci dss, unintentional search for Oracle Solaris information about pci dss (see the following url: https://docs.oracle.com/cd/E56344_01/html/E53940/makehtml-id-4.html ),
The following is an excerpt:
Pci dss security policy r
There is a problem with the "SM bus controller" and "other PCI bridge devices" Driver in the Device Manager, smpci
After WinXP reinstalls the system, there is a yellow question mark in the Device Manager, which is "SM bus controller" and "other PCI bridge devices". The motherboard is Rainbow 7 and the chipset is geForce 7025, nanqiao is nForce 630a, And it is useless to use the motherboard driver of the rai
One, interface
Char *pci_lookup_name (struct pci_access *a, char *buf, intsize, int flags, ...) Pci_abi;
(/usr/include/pci/pci.h)
Second, describe
The VendorID of PCI devices (obtained from vendor files) can be read below the/sys/bus/pci/devices/
1 at the beginning of the time using LSPCI to obtain vendor and device text description, but low efficiency;
2) no
With the heat of solid-state drives, more and more friends began to pay attention to whether the notebook reserved mSATA interface, but because the mSATA interface and the mini pci-e look exactly the same, the problem will follow.
Mini PCI-E from its name can be seen, is a mini version of the Pci-e interface, using the PCI
MSI appears in PCI2.2, and PCI 3.0 allows masks to be set for each interrupt
Msi-x appears in PCI3.0, relative to MSI, each device allows more interrupts, each interrupt can be configured independently
Basic functions
The device throws an interrupt by writing to a specific address
Compared to traditional pin-based PCI interrupts:
1. Traditional PCI inter
Original source: http://www.fpga4fun.com/PCI-Express3.htmlpacketized transactionsPCI Express is a serial bus. Or is it? From the computer ' s perspective, it's a conventional bus where read and write transactions can be achieved.The trick is and all operations are packetized. Let's assume the CPU wants to write some data to a device. It forwards the order to the PCI Express Bridge which then creates a packe
I have the following errors in DMESG in my two servers, what is the reason for consulting?
os :rhel4.4 服务器型号: hp dl380 g4 ,g5 shpchp: acpi_shpchprm:\_SB_.PCI0 evaluate _BBN fail=0x5 shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x5 shpchp: acpi_shpchprm:\_SB_.PCI0 evaluate _BBN fail=0x5 shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x5 shpchp: acpi_shpchprm:\_SB_.PCI0 evaluate _BBN fail=0x5 shpch
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