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Re: [Qemu-devel] [PATCHv2 3/3] Split ISA and sysbus versions of m48t59 d

From: Mark Cave-Ayland
Subject: Re: [Qemu-devel] [PATCHv2 3/3] Split ISA and sysbus versions of m48t59 device
Date: Thu, 10 Nov 2016 15:16:36 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Icedove/45.4.0

On 10/11/16 14:57, Paolo Bonzini wrote:
> On 09/11/2016 13:22, David Gibson wrote:
>> The m48t59 device supports both ISA and direct sysbus attached versions of
>> the device in the one .c file.  This can be awkward for some embedded
>> machine types which need the sysbus M48T59, but don't want to pull in the
>> ISA bus code and its other dependencies.
>> Therefore, this patch splits out the code for the ISA attached M48T59 into
>> its own C file.  It will be built when both CONFIG_M48T59 and
>> CONFIG_ISA_BUS are enabled.
>> Signed-off-by: David Gibson <address@hidden>
> Who needs the ISA M48T59?  Perhaps it should be a separate symbol
> altogether.  Let's document that SPARC will stop providing it in 2.9,
> for example, if it's only a PReP thing.
> Paolo

Hi Paolo,

The ISA M48T59 is still actively used by the sun4u machine on
qemu-system-sparc64. In real terms it's actually connected to the ebus,
but for all intents and purposes it's the same as an ISA bus connected
via a PCI bridge.



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