Commit 30b03edd authored by Balamurugan S's avatar Balamurugan S Committed by Jeff Johnson
Browse files

wifi: ath12k: Add support to clear qdesc array in REO cache 



Currently, the existing code lacks functionality to clear the qdesc
array in the REO cache. As a result, any updates in the LUT are not
reflected in the REO cache. To address this issue, add functionality
to clear the qdesc array in the REO cache during a peer TID update.
To do this, set the CLEAR_DESC_ARRAY field of
WCSS_UMAC_REO_R0_QDESC_ADDR_READ and then reset it.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1

Signed-off-by: default avatarBalamurugan S <quic_bselvara@quicinc.com>
Signed-off-by: default avatarNithyanantham Paramasivam <quic_nithp@quicinc.com>
Reviewed-by: default avatarVasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20250402152529.1649402-3-quic_nithp@quicinc.com


Signed-off-by: default avatarJeff Johnson <jeff.johnson@oss.qualcomm.com>
parent 0bbcd42b

drivers/net/wireless/ath/ath12k/dp_rx.c

+1 −0
Original line number Diff line number Diff line
@@ -762,6 +762,7 @@ static void ath12k_peer_rx_tid_qref_setup(struct ath12k_base *ab, u16 peer_id, u 
	qref->info1 = u32_encode_bits(upper_32_bits(paddr),

				      BUFFER_ADDR_INFO1_ADDR) |

		      u32_encode_bits(tid, DP_REO_QREF_NUM);

	ath12k_hal_reo_shared_qaddr_cache_clear(ab);

}



static void ath12k_peer_rx_tid_qref_reset(struct ath12k_base *ab, u16 peer_id, u16 tid)

drivers/net/wireless/ath/ath12k/hal.h

+1 −0
Original line number Diff line number Diff line
@@ -1172,4 +1172,5 @@ int ath12k_hal_srng_update_shadow_config(struct ath12k_base *ab, 
void ath12k_hal_srng_shadow_config(struct ath12k_base *ab);

void ath12k_hal_srng_shadow_update_hp_tp(struct ath12k_base *ab,

					 struct hal_srng *srng);

void ath12k_hal_reo_shared_qaddr_cache_clear(struct ath12k_base *ab);

#endif

drivers/net/wireless/ath/ath12k/hal_rx.c

+18 −1
Original line number Diff line number Diff line 
// SPDX-License-Identifier: BSD-3-Clause-Clear

/*

 * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.

 * Copyright (c) 2021-2024 Qualcomm Innovation Center, Inc. All rights reserved.

 * Copyright (c) 2021-2025 Qualcomm Innovation Center, Inc. All rights reserved.

 */



#include "debug.h"
@@ -851,3 +851,20 @@ void ath12k_hal_reo_hw_setup(struct ath12k_base *ab, u32 ring_hash_map) 
	ath12k_hif_write32(ab, reo_base + HAL_REO1_DEST_RING_CTRL_IX_3,

			   ring_hash_map);

}



void ath12k_hal_reo_shared_qaddr_cache_clear(struct ath12k_base *ab)

{

	u32 val;



	lockdep_assert_held(&ab->base_lock);

	val = ath12k_hif_read32(ab, HAL_SEQ_WCSS_UMAC_REO_REG +

				HAL_REO1_QDESC_ADDR(ab));



	val |= u32_encode_bits(1, HAL_REO_QDESC_ADDR_READ_CLEAR_QDESC_ARRAY);

	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_REO_REG +

			   HAL_REO1_QDESC_ADDR(ab), val);



	val &= ~HAL_REO_QDESC_ADDR_READ_CLEAR_QDESC_ARRAY;

	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_REO_REG +

			   HAL_REO1_QDESC_ADDR(ab), val);

}