cpu

Comments and questions related to the "Down to the TLP" pages

cpu

Postby Guest »

A simple bus transaction:
I understood that data we are sending from CPU2PCIe through pcie protocol using packet headers etc., but
In this i have a doubt i.e.why is this "CPU wants to write a 32-bit word to a PCIe peripheral"
Guest
 

Re: cpu

Postby support »

Hello,

The most common reason that a CPU would initiate a PCIe write transaction to a peripheral is a memory write operation to a memory segment that is mapped to the PCIe device. Something like *p = data in C, but it's usually done with writel() and similar helper functions in Linux.

Regards,
Eli
support
 
Posts: 802
Joined:


Return to General PCIe