Hi,
My device connect like below
\-[0000:00]-+-00.0
.
+-03.2-[04]--+-00.0
| +-00.1
| +-00.2
| +-00.3
| +-00.4
| +-00.5
| +-00.6
| \-00.7
Host bridge (00:00.0 Host bridge: Intel Corporation Haswell-E DMI2 (rev 01))
ARIFwd- is not enabled. Seems like AMI BIOS is disabled ARI on host bridge.
DevCap2: Completion Timeout: Range BCD, TimeoutDis+,
LTR-, OBFF Not Supported ARIFwd-
DevCtl2: Completion Timeout: 50us to 50ms,
TimeoutDis-, LTR-, OBFF Disabled ARIFwd-
But ARIFwd+ is enabled on root port where my device is connected.
00:03.2 PCI bridge: Intel Corporation Haswell-E PCI Express Root Port 3
DevCap2: Completion Timeout: Range BCD, TimeoutDis+,
LTR-, OBFF Not Supported ARIFwd+
DevCtl2: Completion Timeout: 50us to 50ms,
TimeoutDis-, LTR-, OBFF Disabled ARIFwd+
>From lspci out I am able to see next-function – 8 from ARI capability
structure of 7th function (since device firmware is exposing all 0 –
15 functions).
Below are my query's
1) Is it mandatory to enable ARIFwd on Host Bridge?
If yes, please let me know how can i enable through OS or host bridge driver.
2) SR-IOV capability structure has the ARIHierarchy field. What is the
main use of this field?
Is there any relation between ARI and SR-IOV?
Many Thanks.
Best Regards,
ravikumar.
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