Re: [Qemu-devel] [PATCH 4/4] pci: add pci test device

[Paolo Bonzini]

Il 03/04/2013 14:00, Michael S. Tsirkin ha scritto:
> On Wed, Apr 03, 2013 at 01:48:41PM +0200, Paolo Bonzini wrote:
>> Il 03/04/2013 12:38, Michael S. Tsirkin ha scritto:
>>> On Wed, Apr 03, 2013 at 12:34:24PM +0200, Paolo Bonzini wrote:
>>>> Il 03/04/2013 12:33, Michael S. Tsirkin ha scritto:
>>>>>> Because someone wasn't looking. :)  The hw/ reorganization patches I've
>>>>>> posted fix that.
>>>>>
>>>>> Still not sure how to merge this, if it goes in through my tree
>>>>> and that's the only comment, I'll just fix it silently ...
>>>>
>>>> Indeed.  In fact, considering my hw/ reorganization patches will be
>>>> committed soon, please put it in hw/pci (matching hw/isa/pc-testdev.c).
>>>
>>> Paolo, hw/pci is pci core, I haven't looked at your reorg patches,
>>> but please do not move devices there.
>>> Sorting devices by connection is also wrong I think, by function
>>> would be better.
>>
>> Indeed that's how most devices are sorted.  For example, PCI host
>> devices/bridges/etc. are in hw/pci (together with the PCI core, making
>> hw/pci basically all that goes in through your tree),
> 
> Well host bridges often do lots of things besides pci on the same
> chip.

Still the PCIness is quite important, seeing that almost all such
devices have a name that looks like *_pci.c.

>> ISA host devices
>> are in hw/isa, etc.
> 
> what do you mean "host ISA device"?

PCI-ISA bridges and SuperIO chips: piix4.c, vt82c686.c, lpc_ich9.c,
i82378.c.  PIIX3 would also be there, it needs to be split out of
piix_pci.c.

>> However, there are a few exceptions.  You cannot really sort out 600
>> files without exceptions.  All USB devices are in hw/usb, and the
>> existing test devices (debugexit, testdev) are in hw/isa.
>>
>> There is only one exception you should care about, namely that VFIO and
>> ivshmem are also in hw/pci.
> 
> This makes no sense really.
> Pls add hw/misc or just keep misc stuff in hw/

hw/misc exists already, I'll move those two there.

>> Here is the list of files in hw/pci:
>>
>> host-apb.c
>> host-bonito.c
>> host-dec.c
>> host-dec.h
>> host-grackle.c
>> host-gt64xxx.c
>> host-piix.c
>> host-ppc4xx.c
>> host-ppce500.c
>> host-prep.c
>> host-q35.c
>> host-sh.c
>> host-spapr.c
>> host-uninorth.c
>> host-versatile.c
>> i82801b11.c
>> ioh3420.c
>> ioh3420.h
>> ivshmem.c
>> msi.c
>> msi.h
>> msix.c
>> msix.h
>> pam.c
>> pci-hotplug.c
>> pci-stub.c
>> pci.c
>> pci.h
>> pci_bridge.c
>> pci_bridge.h
>> pci_bridge_dev.c
>> pci_bus.h
>> pci_host.c
>> pci_host.h
>> pci_ids.h
>> pci_regs.h
>> pcie.c
>> pcie.h
>> pcie_aer.c
>> pcie_aer.h
>> pcie_host.c
>> pcie_host.h
>> pcie_port.c
>> pcie_port.h
>> pcie_regs.h
>> shpc.c
>> shpc.h
>> slotid_cap.c
>> slotid_cap.h
>> vfio.c
>> xio3130_downstream.c
>> xio3130_downstream.h
>> xio3130_upstream.c
>> xio3130_upstream.h
>>
>> Paolo
> 
> This messes up things.  pci core is separate from devices using it,
> and it's important to me. Really just add hw/bridge/ and put all
> kind of bridge devices there.

Ok, I'll add hw/pci/bridge, and remove the "host-" prefix for host PCI
devices.

Paolo