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Re: port-arm/57643: aarch64: smmu(4) seems mandatory for some SoC and/or memory configuration

To: gnats-bugs%netbsd.org@localhost
Subject: Re: port-arm/57643: aarch64: smmu(4) seems mandatory for some SoC and/or memory configuration
From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
Date: Wed, 4 Oct 2023 13:25:46 +0000

> Date: Wed,  4 Oct 2023 06:55:00 +0000 (UTC)
> From: rokuyama.rk%gmail.com@localhost
> 
> (2) Import smmu(4) from OpenBSD. But, don't we need to have MI
>     frameworks for IOMMUs?

Isn't that what bus_dma is all about?  What other framework is needed?

Follow-Ups:
- Re: port-arm/57643: aarch64: smmu(4) seems mandatory for some SoC and/or memory configuration
  - From: Rin Okuyama

References:
- port-arm/57643: aarch64: smmu(4) seems mandatory for some SoC and/or memory configuration
  - From: rokuyama . rk

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