the output of pcm-iio on EMR may not be correct

[wangyi4]

I ran pcm-iio on EMR6554s. It seems the output from pcm-iio program is not correct. QAT are connected to PCIe1 and PCIe4.

|IIO Stack 4 - PCIe1 |
|0000:6F:01.0|Gen0 x0 |8086:0B25 Intel Corporation unknown device; Part: 0, 1, 2, ��
|0000:70:00.0|Gen1 x1 |8086:4940 Intel Corporation 4xxx Series QAT; Part: 4, ��
|0000:72:00.0|Gen0 x0 |8086:2710 Intel Corporation unknown device; Part: 5, ��

---

|IIO Stack 9 - PCIe4|
|0000:79:01.0|Gen0 x0 |8086:0B25 Intel Corporation unknown device; Part: 0, 1, 2, ��
|0000:7A:00.0|Gen1 x1 |8086:4940 Intel Corporation 4xxx Series QAT; Part: 4, ��
|0000:7C:00.0|Gen0 x0 |8086:2710 Intel Corporation unknown device; Part: 5, ��

[ogbrugge]

Are you using the latest version of pcm?

[wangyi4]

Yes, the latest version also has such issue.

[rdementi]

we have a fix which should be merged soon

[rdementi]

fixed in the master branch now

[wangyi4]

I tried the latest master. It includes the fixings mentioned above. But the issue is still there.

[rdementi]

@wangyi4 thank you for your feedback. Could you please share the current output from your system and the expected output from your point of view?

[wangyi4]

The output is the same as what I reported before.
My understanding is that QAT should be connected to IDX instead of PCIe, like

|IIO Stack 0 - IDX0 |IB write|IB read|OB read|OB write|IOTLB Lookup|IOTLB Miss|Ctxt Cache Hit|256T Cache Hit|512G Cache Hit|1G Cache Hit|2M Cache Hit|IOMMU Mem Access|
||||||||||||||
| Part0 | 0 | 0 | 0 | 0 | 360 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Part1 | 0 | 0 | 0 | 0 |
| Part2 | 0 | 0 | 0 | 0 |
| Part3 | 0 | 0 | 0 | 0 |
| Part4 |7680 |3840 | 0 | 0 |
| Part5 | 0 | 0 | 0 | 0 |
| Part6 | 0 | 0 | 0 | 0 |
| Part7 | 0 | 0 | 0 | 0 |
|____________||||||||||||______________|
|0000:6A:01.0|Gen0 x0 |8086:0B25 Intel Corporation unknown device; Part: 0, 1, 2
|0000:6B:00.0|Gen1 x1 |8086:4940 Intel Corporation 4xxx Series QAT; Part: 4
|0000:6D:00.0|Gen0 x0 |8086:2710 Intel Corporation unknown device; Part: 5

Correct me if my understanding is wrong.

On GNR-SP , I saw QAT was connected to HCx.

---

|IIO Stack 1 - HCx0 |IB write|IB read|OB read|OB write|IOTLB Lookup|IOTLB Miss|Ctxt Cache Hit|256T Cache Hit|512G Cache Hit|1G Cache Hit|2M Cache Hit|IOMMU Mem Access|
||________||||||||||||
| Part0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Part1 | 0 | 0 | 0 | 0 |
| Part2 | 0 | 0 | 0 | 0 |
| Part3 | 0 | 0 | 0 | 0 |
| Part4 | 0 | 0 | 0 | 0 |
| Part5 | 0 | 0 | 0 | 0 |
| Part6 | 0 | 0 | 0 | 0 |
| Part7 | 0 | 0 | 0 | 0 |
||________|||||||||||______________|
|0000:00:01.0|Gen0 x0 |8086:0B25 Intel Corporation unknown device; Part: 0
|0000:01:00.0|Gen1 x1 |8086:4944 Intel Corporation 4xxx Series QAT; Part: 4
|0000:03:00.0|Gen0 x0 |8086:2714 Intel Corporation unknown device; Part: 5

[antonovalexnn]

Hi @wangyi4,
You are right. PCIe device mapping on stack ID for your platform is incorrect. I will contact you directly