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Re: [Qemu-ppc] [PATCH 2/2] m48t59: add mem_base value to m48t59_init_isa


From: Paolo Bonzini
Subject: Re: [Qemu-ppc] [PATCH 2/2] m48t59: add mem_base value to m48t59_init_isa()
Date: Mon, 19 Jan 2015 17:01:08 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0


On 19/01/2015 16:38, Andreas Färber wrote:
>> > Is there an "EBus bridge" PCI device similar to the PCI-to-ISA bridge?
> In the previous dump, the "ebus" entry looked like one to me?
> 
>     bus: pci
>       dev: ebus, id ""
>         addr = 03.0
>         class Bridge, addr 00:03.0, pci id 108e:1000 (sub 1af4:1100)
>         bar 0: mem at 0x3000000 [0x3ffffff]
>         bar 1: i/o at 0x4000 [0x7fff]
>         bus: isa.0
>           type ISA
> 
> Confusingly named, as "ebus" would be a better type name for the actual
> bus, but "EBus" might work as bus name if we actually need one (does the
> user add devices to this bus or are these all chipset features
> recursively set up by the machine?). Otherwise they could just be
> child<> properties on the ebus device.

So is this m48t59 device mapped inside a BAR of its parent ebus device?

What value will the sun4u patch pass for mem_base?

Paolo



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