I am not sure the open source community is aligned on what mails go to "discuss" mailing list. CC to "devel" mailing list.
Please read the PI spec on how the IO space is converted from different states. The initial non-exist IO space is created based on the IO address width in the CPU INFO HOB. You cannot add a non-exist IO space using GCD services. Thanks, Ray From: Wasim Khan <wasim.k...@nxp.com> Sent: Friday, April 3, 2020 12:25 PM To: disc...@edk2.groups.io; Ni, Ray <ray...@intel.com>; Bi, Dandan <dandan...@intel.com>; Gao, Liming <liming....@intel.com>; Wu, Hao A <hao.a...@intel.com>; leif.lindh...@linaro.org Subject: Re: Query: Add GCD IO Space Map Hi , Any clue on this ? Get Outlook for Android<https://aka.ms/ghei36> ________________________________ From: disc...@edk2.groups.io<mailto:disc...@edk2.groups.io> <disc...@edk2.groups.io<mailto:disc...@edk2.groups.io>> on behalf of Wasim Khan via groups.io <wasim.khan=nxp....@groups.io<mailto:wasim.khan=nxp....@groups.io>> Sent: Friday, April 3, 2020 1:18:13 AM To: disc...@edk2.groups.io<mailto:disc...@edk2.groups.io> <disc...@edk2.groups.io<mailto:disc...@edk2.groups.io>>; ruiyu...@intel.com<mailto:ruiyu...@intel.com> <ruiyu...@intel.com<mailto:ruiyu...@intel.com>>; dandan...@intel.com<mailto:dandan...@intel.com> <dandan...@intel.com<mailto:dandan...@intel.com>>; liming....@intel.com<mailto:liming....@intel.com> <liming....@intel.com<mailto:liming....@intel.com>>; hao.a...@intel.com<mailto:hao.a...@intel.com> <hao.a...@intel.com<mailto:hao.a...@intel.com>> Subject: [edk2-discuss] Query: Add GCD IO Space Map Hi All, The Initial GCD I/O Space Map printed from DxeMain is : GCD:Initial GCD I/O Space Map GCDIoType Range ========== ================================= NonExist 0000000000000000-00000000000FFFFF I require some IO memory (for PciHostBridgeDxe) , i need NonExist IO chuck from 0x90_00010000 - 0x90_0001ffff , for which I tried BuildResourceDescriptorHob() from PEI Phase BuildResourceDescriptorHob ( EFI_RESOURCE_IO, ResourceAttributes, 0x9000010000, 0x10000 ); And gDS->AddIoSpace (EfiGcdIoTypeIo, 0x9000010000, 0x10000) from a DXE driver . But in both case GCD AddIoSpace fails with Status as Unsupported. GCD:AddIoSpace(Base=0000009000010000,Length=0000000000010000) GcdIoType = I/O Status = Unsupported GCDIoType Range ========== ================================= NonExist 0000000000000000-00000000000FFFFF Can someone help that how can I add a NonExist GCDIoType memory ? Also, why does the initial GCD I/O space map shows small range as compared with GCD Memory Space Map? GCD:Initial GCD Memory Space Map GCDMemType Range Capabilities Attributes ========== ================================= ================ ================ NonExist 0000000000000000-00000FFFFFFFFFFF 0000000000000000 0000000000000000 GCD:Initial GCD I/O Space Map GCDIoType Range ========== ================================= NonExist 0000000000000000-00000000000FFFFF Regards, Wasim -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#56932): https://edk2.groups.io/g/devel/message/56932 Mute This Topic: https://groups.io/mt/72743569/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
