This message is from the T13 list server.
Pat LaVarre wrote:
[...]So how do we answer Nathan M's question - how do SATA/ PATA bridges transport vendor-specific ATA commands today?
Do bridges assume all vendor-specific protocol is PIO?
That's my guess, but I haven't tested a ton of bridges.
In theory a bridge can be smart and notice whether a command is non-data or PIO, but probably cannot 'guess' anything related to DMA or queueing.
Jeff
