From: Balamurugan S Date: Wed, 2 Apr 2025 15:25:28 +0000 (+0530) Subject: wifi: ath12k: Add support to clear qdesc array in REO cache X-Git-Tag: v6.16-rc1~132^2~157^2~16^2~58 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=30b03edd265a79b779c29c12ad640c91830ce7ca;p=thirdparty%2Fkernel%2Flinux.git 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: Balamurugan S Signed-off-by: Nithyanantham Paramasivam Reviewed-by: Vasanthakumar Thiagarajan Link: https://patch.msgid.link/20250402152529.1649402-3-quic_nithp@quicinc.com Signed-off-by: Jeff Johnson --- diff --git a/drivers/net/wireless/ath/ath12k/dp_rx.c b/drivers/net/wireless/ath/ath12k/dp_rx.c index 81e036f1d70ff..48d907a400b39 100644 --- a/drivers/net/wireless/ath/ath12k/dp_rx.c +++ b/drivers/net/wireless/ath/ath12k/dp_rx.c @@ -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) diff --git a/drivers/net/wireless/ath/ath12k/hal.h b/drivers/net/wireless/ath/ath12k/hal.h index 76bb095c62e6a..339812d383387 100644 --- a/drivers/net/wireless/ath/ath12k/hal.h +++ b/drivers/net/wireless/ath/ath12k/hal.h @@ -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 diff --git a/drivers/net/wireless/ath/ath12k/hal_rx.c b/drivers/net/wireless/ath/ath12k/hal_rx.c index ac17d6223fa7f..98eeccc68fcdb 100644 --- a/drivers/net/wireless/ath/ath12k/hal_rx.c +++ b/drivers/net/wireless/ath/ath12k/hal_rx.c @@ -1,7 +1,7 @@ // 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); +}