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e69d7e99e7
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1169 PCI spec: They are also required to always implement function 0 in the device. Implementing other functions is optional and may be assigned in any order (i.e., a two-function device must respond to function 0 but can choose any of the other possible function numbers (1-7) for the second function). This patch updates ScanPciBus() to not scan other functions if function 0 is not implemented. Test done: Added debug code below in the second loop of ScanPciBus(), compared the debug logs with and without this patch, many non-0 unimplemented functions are skipped correctly. DEBUG (( DEBUG_INFO, "%a() B%02xD%02xF%02x VendorId: %04x DeviceId: %04x\n", __FUNCTION__, Bus, Device, Function, VendorID, DeviceID )); Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com> Cc: Tomson Chang <tomson.chang@intel.com> Cc: Jenny Huang <jenny.huang@intel.com> Cc: Amy Chan <amy.chan@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
EDK II Project
A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.
Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1
The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:
- AppPkg/Applications/Python/Python-2.7.2/Tools/pybench
- AppPkg/Applications/Python/Python-2.7.2
- AppPkg/Applications/Python/Python-2.7.10
- BaseTools/Source/C/BrotliCompress
- MdeModulePkg/Library/BrotliCustomDecompressLib
- OvmfPkg
- CryptoPkg/Library/OpensslLib/openssl
The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.