From 4f82a8d5c27748a3b4318af99627f4df248133e8 Mon Sep 17 00:00:00 2001 From: Karthikeyan Periyasamy Date: Tue, 21 May 2024 11:08:10 +0300 Subject: wifi: ath12k: refactor rx descriptor CMEM configuration 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 Acked-by: Jeff Johnson Signed-off-by: Kalle Valo Link: https://msgid.link/20240516000807.1704913-2-quic_periyasa@quicinc.com --- drivers/net/wireless/ath/ath12k/dp.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/wireless/ath/ath12k/dp.h') diff --git a/drivers/net/wireless/ath/ath12k/dp.h b/drivers/net/wireless/ath/ath12k/dp.h index 43589c3dd4bc..742094545089 100644 --- a/drivers/net/wireless/ath/ath12k/dp.h +++ b/drivers/net/wireless/ath/ath12k/dp.h @@ -350,6 +350,7 @@ struct ath12k_dp { struct ath12k_hp_update_timer tx_ring_timer[DP_TCL_NUM_RING_MAX]; struct ath12k_spt_info *spt_info; u32 num_spt_pages; + u32 rx_ppt_base; struct list_head rx_desc_free_list; /* protects the free desc list */ spinlock_t rx_desc_lock; -- cgit v1.2.3-58-ga151