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FireWire(ieee1394), laptop camera-ports, and DMA

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sundialsvc4
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Joined: 10 Nov 2005
Posts: 436

Posted: Wed May 16, 2007 4:46 am Post subject: FireWire(ieee1394), laptop camera-ports, and DMA

It finally dawned on me that the digital-camera port on my laptop is, in fact, a FireWire (IEEE1394) port. The output of lspci looks like this:

Code:

01:00.0 FireWire (IEEE 1394): Texas Instruments TSB43AA22 IEEE-1394 Controller (PHY/Link Integrated) (rev 02)

And, lo! It works!

... But...

... it doesn't seem to be using DMA. It doesn't transfer nearly as rapidly as I expected it to.

And, it doesn't seem to want to use DMA.

Am I missing something?

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