> It is useful for DMA, check “NumberOfPhysicalBreaks” in
PORT_CONFIGURATION_INFORMATION for the detail.
>Hi, all
>What’s scatter/gather in scsi miniport driver?
>I am writing a virtual scsi miniport driver, I must support if???
>
It depends on how ‘virtual’ your ‘virtual scsi miniport’ driver is. If
indeed you have no hardware, then you will not be supporting s/g dma
operations. If on the other hand you are layered over hardware that is
not exactly a scsi device, then perhaps you do have dma and you do use
s/g.
You should search this email list for all threads related to virtual
scsi miniports as there are a lot of ‘challenges’ that you MUST
UNDERSTAND before you start your design or you will have very low
probability of success.
===========================
Mark Roddy
Consultant, Microsoft DDK MVP
Hollis Technology Solutions
xxxxx@hollistech.com
www.hollistech.com
603-321-1032