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Re: bus_dmamap_sync() for uhci(4)

To: bouyer%antioche.eu.org@localhost
Subject: Re: bus_dmamap_sync() for uhci(4)
From: Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>
Date: Mon, 23 Jun 2008 04:08:14 +0900

bouyer%antioche.eu.org@localhost wrote:

> No, but data xfers are also done though bus_dmamem_alloc()'ed memory.
> The USB subsystem does memcpy() from/to this memory for each transfers.

Okay, I see.
I didn't think all data DMA xfers are also done via memcpy() :-/
---
Izumi Tsutsui

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References:
- Re: bus_dmamap_sync() for uhci(4)
  - From: Manuel Bouyer

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