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| From | Clemens Ladisch <clemens@ladisch.de> |
| Newsgroups | comp.os.linux.hardware |
| Subject | Re: Difference between PCIe host bridge and PCI-PCI bridge |
| Date | Sat, 3 Jun 2017 19:01:55 +0200 |
| Lines | 18 |
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Tan wrote: > I would appreciate if someone explains the difference between PCIe host > bridge and PCI-PCI bridge on Intel platforms. PCI/PCI bridges are interfaces between two PCI buses. The host bridge (or root complex) is the interface between the top-level PCI bus and the CPU (the host). > I found that PCI-PCI bridges have Header Type '1' while Host Bridge > have header type '0'. As per my understanding, only non Bridge devices > support header type '0'. From the point of view of the PCI bus, the host is not visible as a PCI device, so the device called "host bridge" is not actually a bridge. Regards, Clemens
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Difference between PCIe host bridge and PCI-PCI bridge Tan <tanmayinamdar@gmail.com> - 2017-05-26 11:15 -0700 Re: Difference between PCIe host bridge and PCI-PCI bridge Clemens Ladisch <clemens@ladisch.de> - 2017-06-03 19:01 +0200 Re: Difference between PCIe host bridge and PCI-PCI bridge Zihan <whois.zihan.yang@gmail.com> - 2018-02-28 06:46 -0800
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