Are the assumptions I made in the original post incorrect? Xillybus usage example click to enlarge. Your advice is very much needed. Written By eli on February 9th, Also, many of the configuration space registers don’t really apply to upstream-facing or root ports.
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It then sends a cfg1 write to the device ID that’s given by the secondary bus number.
alter As for the Linux side, there is no work at all. Are you planning to design and implement a PCIe device from scratch? Sign up using Facebook.
Hello, I have been gpga your article about how to transfer data from a FPGA board to a computer and I might be pretty interested by your researches. So basically, I just ran a program that reads or writes to a file descriptor as fast as possible typically a few GBsand divided the amount of data with the time elapsed.
How does one know if a device has multiple functions? Wouldn’t the rootport first write all 1’s to this entry of the configuration space and read it back to determine the size it needs to allocate for this BAR? It is possible to reserve addresses, bus numbers, etc.
Again, this could have been done in one transaction, right? According to schedule, I would say. Jamey Hicks 1, 1 11 Written By eli on February 27th, This is not a research project, but rather an implementation of an IP core.
Written By eli on March 22nd, It is my understanding that these last 3 windows are used to map all PCIe addresses inside pcoe rootport. Fair enough, looks like they’re basically just going to emulate the whole host side in software. User programs have to access to this information. Home Questions Tags Users Unanswered. JTAG will not be involved at any point.
Setting the base address of the BAR and the command register could have been done in a single transaction right? Written By Smith on February 29th, Thank you very much, Alex. Xillybus usage example click to enlarge. It’s mainly just going to pass requests through from one side to the other. Unfortunately, I’m not super familiar with Altera IP cores. Sign up or log in Sign up using Google.
Again, it would normally do this by writing all 1s and read back the value to determine the size it needs to allocate for each address range, right?
Written By harini on February 28th, Sign up or log in Sign up using Google. The rootport then writes to the command register in the configuration space of the endpoint, to configure the endpoint to enable the capabilities we want.
I would like to write a driver in kernel space that: On the PC side, yes, you need alters develop or adopt some kind of driver. Written By harini on February 29th, All without reading actual specifications and educational materials?