UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Newbie paolopiace
Newbie
6,071 Views
Registered: ‎08-31-2012

BAR0/1 & enumeration

I'm working on a NTB. NT functions are Type-0 headers, like any PCIe end point.

 

BAR0/1 on NT functions can be set as base address for the config-space of their function OR as based address of the memory space for memory transactions.

Question:
How does the bios during enumeration finds whether BAR0/1 is set for pointing to the config-space or to memory space for memory transactions?

 

Thanks.

Tags (2)
0 Kudos
1 Reply
Voyager
Voyager
6,058 Views
Registered: ‎05-21-2008

Re: BAR0/1 & enumeration

enumeration does not read BAR register. it only read vendor ID to check if there is device. BAR is configrated by OS.
0 Kudos