wifi: ath11k: Increase TCL data ring size for WCN6750

Increase TCL data ring size to 2048 for WCN6750. This is
needed to meet 160 MHz TX throughput.

Add a new hw_param to indicate the TX ring size for
individual devices.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1
Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20220905071805.31625-4-quic_mpubbise@quicinc.com

drivers/net/wireless/ath/ath11k/core.c

@@ -112,6 +112,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.sram_dump = {},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -189,6 +190,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.sram_dump = {},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.name = "qca6390 hw2.0",
@@ -268,6 +270,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.name = "qcn9074 hw1.0",
@@ -344,6 +347,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.sram_dump = {},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.name = "wcn6855 hw2.0",
@@ -423,6 +427,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.name = "wcn6855 hw2.1",
@@ -501,6 +506,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		},
 
 		.tcl_ring_retry = true,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE,
 	},
 	{
 		.name = "wcn6750 hw1.0",
@@ -576,6 +582,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
 		.sram_dump = {},
 
 		.tcl_ring_retry = false,
+		.tx_ring_size = DP_TCL_DATA_RING_SIZE_WCN6750,
 	},
 };
 

drivers/net/wireless/ath/ath11k/dp.c

@@ -401,7 +401,7 @@ static int ath11k_dp_srng_common_setup(struct ath11k_base *ab)
 
 		ret = ath11k_dp_srng_setup(ab, &dp->tx_ring[i].tcl_data_ring,
 					   HAL_TCL_DATA, tcl_num, 0,
-					   DP_TCL_DATA_RING_SIZE);
+					   ab->hw_params.tx_ring_size);
 		if (ret) {
 			ath11k_warn(ab, "failed to set up tcl_data ring (%d) :%d\n",
 				    i, ret);

drivers/net/wireless/ath/ath11k/dp.h

 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
  */
 
 #ifndef ATH11K_DP_H
@@ -203,6 +204,7 @@ struct ath11k_pdev_dp {
 
 #define DP_WBM_RELEASE_RING_SIZE	64
 #define DP_TCL_DATA_RING_SIZE		512
+#define DP_TCL_DATA_RING_SIZE_WCN6750	2048
 #define DP_TX_COMP_RING_SIZE		32768
 #define DP_TX_IDR_SIZE			DP_TX_COMP_RING_SIZE
 #define DP_TCL_CMD_RING_SIZE		32

drivers/net/wireless/ath/ath11k/hw.h

@@ -216,6 +216,7 @@ struct ath11k_hw_params {
 	} sram_dump;
 
 	bool tcl_ring_retry;
+	u32 tx_ring_size;
 };
 
 struct ath11k_hw_ops {