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Re: [Qemu-devel] AHCI support integration

From: Christoph Egger
Subject: Re: [Qemu-devel] AHCI support integration
Date: Mon, 10 May 2010 10:10:58 +0200
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On Sunday 09 May 2010 18:01:50 Sebastian Herbszt wrote:
> The ICH6 AHCI implementation submitted by Chong is an all-in-one attempt
> (ahci.c). It includes all needed parts of the ICH6, AHCI, SATA and ATA
> specification. The code in hw/ide/* on the other hand is split (or could be
> split) into smaller parts like port based and bus master access, IDE and
> ATA core.
> I think it might be reasonable to split ahci.c into ICH6, AHCI and SATA
> parts and strip the limited ATA support and reuse it from the ide core.
> This would give us something like the following:
> hw/ide/piix.c (PIIX3 and PIIX4)
> hw/ide/pci.c and core.c (IDE, BM)
> hw/ata-core.c (ATA)
> hw/sata/ich6.c (ICH6)
> hw/sata-core.c (SATA)
> hw/ahci-core.c (AHCI)
> Should this be a goal or am i over-engineering here?

I think this will result in code much easier to read and to
maintain. You can even split out FIS code
into a seperate file since not every SATA controller is
an AHCI controller.


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