[PATCH 1/2] wifi: ath12k: Refactor Rx descriptor CMEM configuration
Kalle Valo
kvalo at kernel.org
Sat May 25 01:54:52 PDT 2024
Karthikeyan Periyasamy <quic_periyasa at quicinc.com> wrote:
> Currently, data path Rx descriptor placed in the CMEM memory respective
> to the Rx offset. This Rx descriptor CMEM placement is not meeting the
> requirements to support inter device MLO. In inter device MLO, multiple
> devices participate in a group. The device specific Rx descriptor buffers
> transmit to multiple device REO rings. To distinguish between device
> specific Rx descriptor buffers, the CMEM setup configuration need to
> choose a different placement based on the unique identifier (device index).
>
> Below are the CMEM configuration placement representation:
>
> Intra-Device MLO scenario:
>
> Device 0 Device 1
>
> +-------------+ +-------------+
> | | | |
> | Tx | | Tx |
> | | | |
> +-------------+ +-------------+
> | | | |
> | Rx | | Rx |
> | | | |
> +-------------+ +-------------+
>
> Inter-Device MLO scenario:
>
> Device 0 Device 1
>
> +-------------+ +-------------+
> | | | |
> | Tx | | Tx |
> | | | |
> +-------------+ +-------------+
> | | | |
> | Rx | | Reserved |
> | Device 0 | | |
> | | | |
> +-------------+ +-------------+
> | | | Rx |
> | Reserved | | Device 1 |
> | | | |
> +-------------+ +-------------+
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 HW2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
>
> Signed-off-by: Karthikeyan Periyasamy <quic_periyasa at quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>
2 patches applied to ath-next branch of ath.git, thanks.
4f82a8d5c277 wifi: ath12k: refactor rx descriptor CMEM configuration
35864b62fa12 wifi: ath12k: improve the rx descriptor error information
--
https://patchwork.kernel.org/project/linux-wireless/patch/20240516000807.1704913-2-quic_periyasa@quicinc.com/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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