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Question about PCI express
Posted: Thu Apr 02, 2020 5:29 pm
by Fulgurance
Hello, today i have read OS Dev documentation about PCI Express, but this documentation isn't finished. How can i send and receive data from devices ? It's not explained.
Re: Question about PCI express
Posted: Sun Apr 05, 2020 12:30 pm
by Octocontrabass
What needs to be explained? The BARs work the same in PCI and PCIe.
Re: Question about PCI express
Posted: Sun Apr 05, 2020 10:32 pm
by nullplan
To expand on this: It is just PCI. From a software perspective, there is no major difference between PCI and PCIe. The MMIO config stuff is nice, but not tied to PCIe.
Re: Question about PCI express
Posted: Tue Apr 07, 2020 5:44 am
by Fulgurance
Oh okay... thanks