Re: [edk2-devel] [PATCH v4 18/37] MdePkg: Add a PCD feature flag named PcdPciIoTranslationIsEnabled

["Chao Li" <lichao@loongson.cn>]

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Hi Mike and Liming,

Can you please review this patch? Thank you!


Thanks,
Chao
On 2023/12/12 21:12, Chao Li wrote:
> Some ARCH need to use MMIO to access PCI IO, such as ARM AARCH64 RISC-V
> and LOONGARCH64. In some drivers, a PCD value is added to determine
> whether to use MMIO.
>
> BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=4584
>
> Cc: Michael D Kinney<michael.d.kinney@intel.com>
> Cc: Liming Gao<gaoliming@byosoft.com.cn>
> Cc: Zhiguang Liu<zhiguang.liu@intel.com>
> Signed-off-by: Chao Li<lichao@loongson.cn>
> ---
>   MdePkg/MdePkg.dec | 6 ++++++
>   1 file changed, 6 insertions(+)
>
> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> index ac54338089..55f5230c31 100644
> --- a/MdePkg/MdePkg.dec
> +++ b/MdePkg/MdePkg.dec
> @@ -2018,6 +2018,12 @@
>     # @Prompt Validate ORDERED_COLLECTION structure
>     gEfiMdePkgTokenSpaceGuid.PcdValidateOrderedCollection|FALSE|BOOLEAN|0x0000002a
>   
> +  ## Indicates if PCI IO translation is used.
> +  #   TRUE  - PCI IO translation is enable.
> +  #   FALSE - PCI IO translation is disable.
> +  # @Prompt Pci Io Translation Is Enabled.
> +  gEfiMdePkgTokenSpaceGuid.PcdPciIoTranslationIsEnabled|FALSE|BOOLEAN|0x00000043
> +
>   [PcdsFixedAtBuild]
>     ## Status code value for indicating a watchdog timer has expired.
>     # EFI_COMPUTING_UNIT_HOST_PROCESSOR | EFI_CU_HP_EC_TIMER_EXPIRED


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