PCI Express 3.0 is the latest generation of the popular peripheral interface found in virtually every PC, server, and industrial computer. Its high bandwidth, low latency, and cost-to-performance ratio make it a natural choice for many peripheral devices today. Each new generation of PCI Express adds more features, capabilities and bandwidth, which maintains its popularity as a device interconnect.
MindShare's books take the hard work out of deciphering the specs, and this one follows that tradition. MindShare's PCI Express Technology book provides a thorough description of the interface with numerous practical examples that illustrate the concepts. Written in a tutorial style, this book is ideal for anyone new to PCI Express. At the same time, its thorough coverage of the details makes it an essential resource for seasoned veterans.
主要内容如下：
PCI Express Origins
Configuration Space and Access Methods
Enumeration Process
Packet Types and Fields
Transaction Ordering
Traffic Classes, Virtual Channels and Arbitration (QoS)
Flow Control
ACK/NAK Protocol
Logical PHY (8b/10b, 128b/130b, Scrambling)
Electrical PHY
Link Training and Initialization
Interrupt Delivery (Legacy, MSI, MSI-X)
Error Detection and Reporting
Power Management (for both software and hardware)
2.0 and 2.1 Features (such as 5.0GT/s, TLP Hints, and Multi-Casting)
3.0 Features (such as 8.0GT/s, and a new encoding scheme)
Considerations for High Speed Signaling (such as Equalization)
2019-11-19 21:16:53
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系统刚上电时，CPU从0xbfc0.0000开始执行。这个地址在Rom空间中，在完成TLB，Cache，UART等初始化后，CPU就将代码拷到0x8010.0000开始的RAM空间(这个地址是编译Pmon时分配符号_start的)，然后跳转到initmips()，开始在内存空间的执行。 执行initmips之前，CPU做的初始化只是初步的，其作用只是为CPU在内存中运行做一些必要的准备。主要的初始化工作：PCI设备的扫描、空间映射、资源分配都是initmips（）函数所完成的。
2012-09-23 00:00:00
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