Linux mips64r2 PCI中断路由机制分析 本文主要分析mips64r2 PCI设备中断路由原理和irq号分配实现方法,并尝试回答如下问题: PCI设备驱动中断注册(request_irq)时的irq#从哪里来?是硬件相关?还是软件相关? 中断上报时,CPU是如何获得这个irq#的? 本文主要分析PIC(可编程中断控制器)的工作原理,PIC一般集成在CPU中,不同arch.vendor CPU的PIC实现原理也不尽相同.本文基于kerne3.10 + mips64r2 XXX CPU分…

1.PCI设备编号    每一个PCI device都有其unique PFA(PCI Fcntion Address)    PFA由 bus number.device number.function number组成.        一条PCI总线支持256个PFA,即支持256个PCI device.        每个PCI芯片都有自己的device number(取决于IDSEL管脚),每个PCI芯片占用8个PFA.    每个PCI芯片的第一个PCI device的PFA必为8的倍…

原文地址:http://www.fpga4fun.com/PCI-Express6.html Let's try to control LEDs from the PCI Express bus. Xilinx's "Endpoint Block Plus" core allows us to work at the transaction layer level, so it's just going to take us a few lines of code.Instead of…

原文地址:http://www.fpga4fun.com/PCI-Express5.html Xilinx makes using PCI express easy - they provide a free PCI Express core (called "Endpoint Block Plus") and a wizard to configure it, all that in their free version of ISE - ISE WebPack. So let's…

原文地址:http://www.cnblogs.com/jacklu/p/6139347.html 正如前几篇博客所说,使用WDF开发PCIe驱动程序是我本科毕业设计的主要工作.在读研的两年,我也分别为所在课题组移植了自己编写的驱动程序,在Windows 32位和64位平台下的PXI.PXIe.PCI.PCIe板卡分别得到了验证. 这篇文章根据自己最新编写的驱动代码(源代码请找博主索取),主要讲述如何为自己的硬件板卡移植驱动程序,并简单讲述如何使用Altera系列FPGA配置PCI IP核,然后…

1. pci_driver结构struct pci_driver {    struct list_head node;    const char *name;    const struct pci_device_id *id_table;    /* must be non-NULL for probe to be called */    int  (*probe)  (struct pci_dev *dev, const struct pci_device_id *id);    /*…

学习 KVM 的系列文章: (1)介绍和安装 (2)CPU 和 内存虚拟化 (3)I/O QEMU 全虚拟化和准虚拟化(Para-virtulizaiton) (4)I/O PCI/PCIe设备直接分配和 SR-IOV (5)libvirt 介绍 (6)Nova 通过 libvirt 管理 QEMU/KVM 虚机 (7)快照 (snapshot) (8)迁移 (migration) 本文将分析 PCI/PCIe 设备直接分配(Pass-through)和 SR-IOV, 以及三种 I/O 虚拟化…

原文出处:http://www.fpga4fun.com/PCI-Express4.html 感觉没什么好翻译的,都比较简单,主要讲了TLP的帧结构 In the transaction layer, we receive "packets". There is a 32-bits bus and the packets arrive on the bus (packet lengths are always multiples of 32-bits). Maybe one packe…

原文出处:http://www.fpga4fun.com/PCI-Express3.html Packetized transactions PCI express is a serial bus. Or is it? From the computer's perspective, it is a conventional bus where read and write transactions can be achieved. The trick is that all operation…

原文出处:http://www.fpga4fun.com/PCI-Express2.html Point-to-point architecture At 2.5Gbps, the PCI Express Gen1 line speed is a whopping 75 times faster than the 33MHz legacy PCI speed.How is that possible? only because PCI express is a point-to-point bu…