[wdmaudiodev] Filter and PortCls node IDs
- From: Eugene Muzychenko <eugene@xxxxxxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 15 May 2014 12:12:55 +0700
Hello!
Watching for IOCTL_KS_PROPERTY requests coming to my WavePci miniport,
I see that topology filter node IDs specified in KSP_NODE.NodeId field
differ from PCPROPERTY_REQUEST.Node field provided by PortCls.
If KSP_NODE structure is present prior to PCPROPERTY_REQUEST.Instance
pointer, it contains the same node ID as PCPROPERTY_REQUEST.Node.
Of course, PC node IDs are the same as I listed them in my miniport
(0..8, total 9 nodes). There is the following relation between node
IDs:
PCPROPERTY_REQUEST.Node KSP_NODE.NodeId
0 14
1 8
2 7
3 0
4 1
5 2
6 3
7 6
8 5
In KsStudio, all topology nodes are listed in the same order as I
specify them in miniport's table (PC IDs). Therefore, PC exposes them
in proper order, with proper IDs. But what are these IDs specified by a
client in KSP_NODE.NodeId, and how PC converts them to miniport nodes?
Regards,
Eugene
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