Re: [ata-scsi-dev] re-initing IODMACommand

Subject: Re: [ata-scsi-dev] re-initing IODMACommand

From: Chris Sarcone <email@hidden>

Date: Tue, 30 Oct 2007 10:34:21 -0700

Delivered-to: email@hidden

Alex --

I need some advice how to re-init the IODMACommand supplied by the IOSCSIParallelInterfaceController.

Our hardware can address up to 47 bits, and currently this is what we do:

if(localIODMACommand && (transferDir != kSCSIDataTransfer_NoDataTransfer)){
localIODMACommand->initWithSpecification (kIODMACommandOutputHost64 ,47,0,IODMACommand::kMapped,0,1);
IOresult=localIODMACommand->prepare(bufferOffset,bytesLeft)
}

You should not need to do this. If you override InitializeDMACommand(), you set the descriptor up once and you're set.

However, we observe a memory leak, of size zalloc 256 per re-init.

You should not re-init the IODMACommand during the I/O.

-- Chris

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References:

>[ata-scsi-dev] re-initing IODMACommand (From: Alexander von Below <email@hidden>)