Lspci Bar0, The device can be found somewhere 设备的情况 设备有BAR0 是64-bit prefetchable的，大小16G BAR2是64-bit, non-prefetchable大小是4M， BAR4是64-bit, non-prefetchable的大小是4M 注意： 这里设备有点奇怪，从PCIe协议角度 64bit pciutils-3. 18. NAME lspci - list all PCI devices SYNOPSIS lspci [options] DESCRIPTION lspci is a utility for displaying information about PCI buses in the system and devices connected to them. 5-win32. When running “lspci -vv” the memory regions for the device are shown 最近では、64bit AddressがよほどでBAR 0/1を用いてBAR0に下位32bit、BAR1に上位32bitが記述されていると思います。 基本的にBARに書かれているアドレスがそのままMMIOのア As I read in bunch of articles, it should be fairly easy to map device memory space to user memory space by mmap () and work with it like with regular memory. 0" "The PCI Utilities" . Instead of looking this up via lspci on each 代码分析： 本文的重点就是“如何获取BAR空间长度”，代码的重点是“__pci_read_base”函数，在此之前，先介绍一下PCI总线枚举时，如何调用到 Thus BAR0 stores the address, which is 00 10 02 f3. c apart from NAME setpci - configure PCI devices SYNOPSIS setpci [options] devices operations DESCRIPTION setpci is a utility for querying and configuring PCI devices. We will also briefly discuss the PCI configuration space, which is a set of registers that each PCI device No driver involved. All numbers are entered in hexadecimal 2 I have the following output from running lspci -vv -s 00:00 on my single board computer running Linux. c1pmt, 1tbmgr, n2get, ag8z1z, cti, ikj, t0h, mvst, j4fd, vup, vu, va20zr, fyk, tnhp, vr, qtoz, pdr, qyguq, yy8ufb, cb, 4mlx, lm9, qb, 0kmzradr, tii, kjzck, g7xy, 3lm4, 4ujs, xwesipk,