On 03/04/16 16:37, Gabriel L. Somlo wrote:
> On Fri, Mar 04, 2016 at 03:46:29PM +0100, Laszlo Ersek wrote:
>> The first two patches should fix
>> <https://github.com/tianocore/edk2/issues/32>, based on Marcel's
>> analysis in that item. (Thanks a lot for that again!) These patches are
>> (and should be) independent of -D USE_OLD_PCI_HOST; that is, they are
>> active regardless of the fallback that we're temporarily retaining.
>>
>> Michał, can you please test if the series solves your issue?
>>
>> Then, based on the first two patches, the other three expose ECAM to the
>> firmware modules proper (DXE and later). These do depend on
>> USE_OLD_PCI_HOST==FALSE (which is the default now, and the only
>> supported build in the mid term).
>>
>> I tested & regression tested the series in a bunch of scenarios; the
>> most interesting is probably the usual physical GPU assignment. On Q35,
>> the core PciHostBridgeDxe now permits access to the full extended config
>> space, and it works all right with the PCIe GTX750.
>>
>> Gabriel, can you please check if your Q35 OSX guest(s) continue working
>> with this?
> 
> Applied this series on top of the remaining out-of-tree osx-specific 
> patches I keep around, and q35 10.9 through 10.11 appear to work fine.
> 
> Older versions (10.8 and older) won't boot even without this series
> applied, so if they ever did work (not really sure about that), it
> wasn't anything recent that made them stop :)
> 
> Tested-by: Gabriel Somlo <so...@cmu.edu>

Thanks a lot for the quick (and positive :)) feedback!
Laszlo

> Cheers,
> --Gabriel
> 
>>
>> Public branch: <https://github.com/lersek/edk2/commits/pcie_issue32_v1>.
>>
>> Cc: Gabriel Somlo <so...@cmu.edu>
>> Cc: Jordan Justen <jordan.l.jus...@intel.com>
>> Cc: Marcel Apfelbaum <mar...@redhat.com>
>> Cc: Michał Zegan <webczat_...@poczta.onet.pl>
>> Cc: Ruiyu Ni <ruiyu...@intel.com>
>>
>> Thanks!
>> Laszlo
>>
>> Laszlo Ersek (5):
>>   OvmfPkg: IndustryStandard/Q35MchIch9.h: add PCIEXBAR macros
>>   OvmfPkg: PlatformPei: enable PCIEXBAR (aka MMCONFIG / ECAM) on Q35
>>   OvmfPkg: add DxePciLibI440FxQ35
>>   OvmfPkg: match PCI config access to machine type (if not
>>     USE_OLD_PCI_HOST)
>>   OvmfPkg: PciHostBridgeLib: permit access to the full extended config
>>     space
>>
>>  OvmfPkg/Include/IndustryStandard/Q35MchIch9.h                               
>>   |   8 +
>>  OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf                   
>>   |  47 ++++++
>>  {MdePkg/Library/BasePciLibCf8 => 
>> OvmfPkg/Library/DxePciLibI440FxQ35}/PciLib.c | 161 +++++++++++++++-----
>>  OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c                         
>>   |   4 +-
>>  OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf                       
>>   |   1 +
>>  OvmfPkg/OvmfPkgIa32.dsc                                                     
>>   |  29 ++++
>>  OvmfPkg/OvmfPkgIa32X64.dsc                                                  
>>   |  29 ++++
>>  OvmfPkg/OvmfPkgX64.dsc                                                      
>>   |  29 ++++
>>  OvmfPkg/PlatformPei/Platform.c                                              
>>   |  81 ++++++++++
>>  OvmfPkg/PlatformPei/PlatformPei.inf                                         
>>   |   3 +
>>  10 files changed, 356 insertions(+), 36 deletions(-)
>>  create mode 100644 OvmfPkg/Library/DxePciLibI440FxQ35/DxePciLibI440FxQ35.inf
>>  copy {MdePkg/Library/BasePciLibCf8 => 
>> OvmfPkg/Library/DxePciLibI440FxQ35}/PciLib.c (85%)
>>
>> -- 
>> 1.8.3.1
>>

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