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From:   Kalle Valo <kvalo@kernel.org>
To:     linux-wireless@vger.kernel.org
Cc:     ath12k@lists.infradead.org
Subject: [PATCH v2 24/50] wifi: ath12k: add hal_tx.c
Date:   Wed, 16 Nov 2022 18:38:36 +0200
Message-Id: <20221116163902.24996-25-kvalo@kernel.org>
In-Reply-To: <20221116163902.24996-1-kvalo@kernel.org>
References: <20221116163902.24996-1-kvalo@kernel.org>
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From: Kalle Valo <quic_kvalo@quicinc.com>

(Patches split into one patch per file for easier review, but the final
commit will be one big patch. See the cover letter for more info.)

Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
---
 drivers/net/wireless/ath/ath12k/hal_tx.c | 145 +++++++++++++++++++++++++++++++
 1 file changed, 145 insertions(+)

diff --git a/drivers/net/wireless/ath/ath12k/hal_tx.c b/drivers/net/wireless/ath/ath12k/hal_tx.c
new file mode 100644
index 000000000000..869e07e406fe
--- /dev/null
+++ b/drivers/net/wireless/ath/ath12k/hal_tx.c
@@ -0,0 +1,145 @@
+// SPDX-License-Identifier: BSD-3-Clause-Clear
+/*
+ * Copyright (c) 2018-2021 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2021-2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#include "hal_desc.h"
+#include "hal.h"
+#include "hal_tx.h"
+#include "hif.h"
+
+#define DSCP_TID_MAP_TBL_ENTRY_SIZE 64
+
+/* dscp_tid_map - Default DSCP-TID mapping
+ *=================
+ * DSCP        TID
+ *=================
+ * 000xxx      0
+ * 001xxx      1
+ * 010xxx      2
+ * 011xxx      3
+ * 100xxx      4
+ * 101xxx      5
+ * 110xxx      6
+ * 111xxx      7
+ */
+static inline u8 dscp2tid(u8 dscp)
+{
+	return dscp >> 3;
+}
+
+void ath12k_hal_tx_cmd_desc_setup(struct ath12k_base *ab,
+				  struct hal_tcl_data_cmd *tcl_cmd,
+				  struct hal_tx_info *ti)
+{
+	tcl_cmd->buf_addr_info.info0 =
+		le32_encode_bits(ti->paddr, BUFFER_ADDR_INFO0_ADDR);
+	tcl_cmd->buf_addr_info.info1 =
+		le32_encode_bits(((uint64_t)ti->paddr >> HAL_ADDR_MSB_REG_SHIFT),
+				 BUFFER_ADDR_INFO1_ADDR);
+	tcl_cmd->buf_addr_info.info1 |=
+		le32_encode_bits((ti->rbm_id), BUFFER_ADDR_INFO1_RET_BUF_MGR) |
+		le32_encode_bits(ti->desc_id, BUFFER_ADDR_INFO1_SW_COOKIE);
+
+	tcl_cmd->info0 =
+		le32_encode_bits(ti->type, HAL_TCL_DATA_CMD_INFO0_DESC_TYPE) |
+		le32_encode_bits(ti->bank_id, HAL_TCL_DATA_CMD_INFO0_BANK_ID);
+
+	tcl_cmd->info1 =
+		le32_encode_bits(ti->meta_data_flags,
+				 HAL_TCL_DATA_CMD_INFO1_CMD_NUM);
+
+	tcl_cmd->info2 = cpu_to_le32(ti->flags0) |
+		le32_encode_bits(ti->data_len, HAL_TCL_DATA_CMD_INFO2_DATA_LEN) |
+		le32_encode_bits(ti->pkt_offset, HAL_TCL_DATA_CMD_INFO2_PKT_OFFSET);
+
+	tcl_cmd->info3 = cpu_to_le32(ti->flags1) |
+		le32_encode_bits(ti->tid, HAL_TCL_DATA_CMD_INFO3_TID) |
+		le32_encode_bits(ti->lmac_id, HAL_TCL_DATA_CMD_INFO3_PMAC_ID) |
+		le32_encode_bits(ti->vdev_id, HAL_TCL_DATA_CMD_INFO3_VDEV_ID);
+
+	tcl_cmd->info4 = le32_encode_bits(ti->bss_ast_idx,
+					  HAL_TCL_DATA_CMD_INFO4_SEARCH_INDEX) |
+			 le32_encode_bits(ti->bss_ast_hash,
+					  HAL_TCL_DATA_CMD_INFO4_CACHE_SET_NUM);
+	tcl_cmd->info5 = 0;
+}
+
+void ath12k_hal_tx_set_dscp_tid_map(struct ath12k_base *ab, int id)
+{
+	u32 ctrl_reg_val;
+	u32 addr;
+	u8 hw_map_val[HAL_DSCP_TID_TBL_SIZE], dscp, tid;
+	int i;
+	u32 value;
+
+	ctrl_reg_val = ath12k_hif_read32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+					 HAL_TCL1_RING_CMN_CTRL_REG);
+	/* Enable read/write access */
+	ctrl_reg_val |= HAL_TCL1_RING_CMN_CTRL_DSCP_TID_MAP_PROG_EN;
+	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+			   HAL_TCL1_RING_CMN_CTRL_REG, ctrl_reg_val);
+
+	addr = HAL_SEQ_WCSS_UMAC_TCL_REG + HAL_TCL1_RING_DSCP_TID_MAP +
+	       (4 * id * (HAL_DSCP_TID_TBL_SIZE / 4));
+
+	/* Configure each DSCP-TID mapping in three bits there by configure
+	 * three bytes in an iteration.
+	 */
+	for (i = 0, dscp = 0; i < HAL_DSCP_TID_TBL_SIZE; i += 3) {
+		tid = dscp2tid(dscp);
+		value = u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP0);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP1);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP2);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP3);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP4);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP5);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP6);
+		dscp++;
+
+		tid = dscp2tid(dscp);
+		value |= u32_encode_bits(tid, HAL_TCL1_RING_FIELD_DSCP_TID_MAP7);
+		dscp++;
+
+		memcpy(&hw_map_val[i], &value, 3);
+	}
+
+	for (i = 0; i < HAL_DSCP_TID_TBL_SIZE; i += 4) {
+		ath12k_hif_write32(ab, addr, *(u32 *)&hw_map_val[i]);
+		addr += 4;
+	}
+
+	/* Disable read/write access */
+	ctrl_reg_val = ath12k_hif_read32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+					 HAL_TCL1_RING_CMN_CTRL_REG);
+	ctrl_reg_val &= ~HAL_TCL1_RING_CMN_CTRL_DSCP_TID_MAP_PROG_EN;
+	ath12k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
+			   HAL_TCL1_RING_CMN_CTRL_REG,
+			   ctrl_reg_val);
+}
+
+void ath12k_hal_tx_configure_bank_register(struct ath12k_base *ab, u32 bank_config,
+					   u8 bank_id)
+{
+	ath12k_hif_write32(ab, HAL_TCL_SW_CONFIG_BANK_ADDR + 4 * bank_id,
+			   bank_config);
+}