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Date: Mon, 08 Feb 2010 18:24:57 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] Re: [PATCH] pci: initialize header type register.
References: <20100208064147.GD22624@valinux.co.jp>
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To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Blue Swirl <blauwirbel@gmail.com>, Isaku Yamahata <yamahata@valinux.co.jp>, qemu-devel@nongnu.org

On 02/08/10 17:27, Michael S. Tsirkin wrote:
> On Mon, Feb 08, 2010 at 12:14:11PM +0100, Gerd Hoffmann wrote:
>> On 02/08/10 11:17, Michael S. Tsirkin wrote:
>>> On Mon, Feb 08, 2010 at 03:41:47PM +0900, Isaku Yamahata wrote:
>>>> initialize header type register in pci generic code.
>>>>
>>>> Cc: Blue Swirl<blauwirbel@gmail.com>
>>>> Cc: "Michael S. Tsirkin"<mst@redhat.com>
>>>> Signed-off-by: Isaku Yamahata<yamahata@valinux.co.jp>
>>>
>>> No objections here, I am assuming this will be followed
>>> by patches removing header type init from bridges?
>>>   From qdev perspective, it is probably cleaner to make
>>> multifunction bit a separate qdev property though, right?
>>
>>  From a qdev perspective it would make *alot* of sense to move a bunch of
>> pci config stuff (including, but not limited to header type) into
>> PCIDeviceInfo.
>>
>> cheers,
>>    Gerd
>
> Actually - won't this make it possible to create broken configurations
> by tweaking properties from command-line?

Not as property, as struct element in PCIDeviceInfo.  i.e.

static PCIDeviceInfo e1000_info = {
     [ stuff which is here right now ]
     .vendor_id = PCI_VENDOR_ID_INTEL,
     .device_id = E1000_DEVID,
     .class     = PCI_CLASS_NETWORK_ETHERNET,
     [ probably more stuff which makes sense ]
}

Then setup this in generic pci code instead of having each driver doing 
a bunch of pci_config_set_*() calls.

cheers,
   Gerd