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Re: [Qemu-ppc] [PATCH v2 00/10] prep: improve Raven PCI host emulation

From: Christian Johansson
Subject: Re: [Qemu-ppc] [PATCH v2 00/10] prep: improve Raven PCI host emulation
Date: Sat, 7 Sep 2013 10:02:20 +0200

2013/9/4 Hervé Poussineau <address@hidden>:
> This patchset improves Raven PCI host emulation, found in some PPC platforms,
> like the QEMU 'prep' one, and for example the IBM RS/6000 40p.
> Some features added to raven emulation were already present in prep board
> (non contiguous I/O, firmware loading), while some other are new (PCI bus
> mastering memory region).
> This patchset has been tested against Linux 2.4 PPC and IBM RS/6000 40p
> firmware.
May I ask how you tested it with the 40p firmware?
Is there a way to pull it from a running machine or can it be
extracted from a "firmware-upgrade package"?
> Notable achievements are PCI bus mastering (tested with lsi53c895a SCSI
> adapter), lots of cleanup and emulation correctness, and also documentation
> of current hacks required by Open Hack'Ware.
> This gives us a good base to replace OpenHack'Ware by a possible upcoming
> OpenBIOS release.
> Changes since v1:
> - reworked a dubious memcpy to make it work on big endian hosts
> - split onto multiple patches
> Hervé Poussineau (10):
>   prep: kill get_system_io() usage
>   raven: use constant PCI_NUM_PINS instead of 4
>   raven: move BIOS loading from board code to PCI host
>   raven: rename intack region to pci_intack
>   raven: set a correct PCI I/O memory region
>   raven: set a correct PCI memory region
>   raven: add PCI bus mastering address space
>   raven: implement non-contiguous I/O region
>   raven: fix PCI bus accesses with size > 1
>   raven: use raven_ for all function prefixes
>  hw/pci-host/prep.c |  235 
> ++++++++++++++++++++++++++++++++++++++++++++--------
>  hw/ppc/prep.c      |  155 ++++++----------------------------
>  2 files changed, 226 insertions(+), 164 deletions(-)
> --

//Br Christian
"It is quite a three pipe problem . . . "
- Sherlock Holmes, The Red-Headed League

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