Hi,
So I open a Block IO Protocol, also get the Device Path. Then do:
EFI_STATUS OpenParentProtocol(EFI_DEVICE_PATH_PROTOCOL *devpath, EFI_GUID
*protocolguid, void **protocolinterface)
EFI_HANDLE devhandle;
EFI_STATUS status=UEFI_BS->LocateDevicePath(protocolguid, &devpath,
&devhandle);
<...>
but that always fails for both the ATA Pass Thru and the SCSI Ext Pass
Thru. The system has both a SCSI adapter with a hard drive and SATA
adapter with HD and DVD.
I'll look if anything exists via the LocateHandleBuffer to see if anything
exists at all .. but Is it common that you're not going to have a pass thru
interface? Shouldn't the DevPath on the same handle as the opened Block
IO Protocol be able to be used to find the pass thru interfaces?
TIA!!
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