Forum Discussion
Occasional ContributorAN881 reference design need to be upgraded for device 1SM21CH.
Frequent ContributorHi, I am able to setup the design and I also facing the same problem as yours. I will try to contact the design author and clarify.
One thing to check with you is when i run the driver, I am unable to see HBM2=2 and DDR4=4 n preset 5. I only can see change BAR -1=None. For this I am using the unzip software folder under the reference design. Are you using other software driver?
at the same time, can give a check with command as below to see if the BAR2 and BAR4 si detect in the system.
Lspci -nn | grep 1172 to check the BDF.
Eg, if theBDF is 5:0.0 then run command as blow:
Lspci -s 05:00.0 -vvv
Occasional ContributorHi,
I also use the driver from reference design, but mine is called software_hbm2_ddr4 as the attached file.
Are you using the first one of following reference designs?
https://fpgacloud.intel.com/devstore/platform/?acds_version=any&family=stratix-10&board=104
Mine is AN881: PCIe AVMM DMA Gen3x16 DDR4 and HBM2 .
Our message is:
- CHung
Hi,
After we enabled BIOS "above 4G decoding" setting, the BAR address and memory space could be allocated.
Besides, we modified PCIe class code from default 0xff0000 to 0x068000 (Bridge device).
Otherwise BIOS of our motherboard doesn't allocate BAR of FPGA.
It seems you don't have this class code issue.
But capabilities are still "access denied".
Would it be a problem? Or it's normal?
And then, we can change BAR number after above modification,
but link test and DMA functions still fail.
All the read value of link test is 0xffffffff, which is error code replied by system.
Is your situation the same?
Besides, the test program shows " Stopping DMA run due to error." when we trigger DMA function.
- BoonT_Intel
I review the thread today again and found this post. I think this is nearer to the approach. The access denied should be due to your log in do not have admin access. try to type a command like sudo <password>.
Also, you need to load the driver.
