linux/drivers/net/wireless/ath/ath11k/hal_tx.c

// SPDX-License-Identifier: BSD-3-Clause-Clear
/*
 * Copyright (c) 2018-2019 The Linux Foundation. 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
 * 000000      0
 * 001000      1
 * 010000      2
 * 011000      3
 * 100000      4
 * 101000      5
 * 110000      6
 * 111000      7
 */
static const u8 dscp_tid_map[DSCP_TID_MAP_TBL_ENTRY_SIZE] = {
	0, 0, 0, 0, 0, 0, 0, 0,
	1, 1, 1, 1, 1, 1, 1, 1,
	2, 2, 2, 2, 2, 2, 2, 2,
	3, 3, 3, 3, 3, 3, 3, 3,
	4, 4, 4, 4, 4, 4, 4, 4,
	5, 5, 5, 5, 5, 5, 5, 5,
	6, 6, 6, 6, 6, 6, 6, 6,
	7, 7, 7, 7, 7, 7, 7, 7,
};

void ath11k_hal_tx_cmd_desc_setup(struct ath11k_base *ab, void *cmd,
				  struct hal_tx_info *ti)
{
	struct hal_tcl_data_cmd *tcl_cmd = (struct hal_tcl_data_cmd *)cmd;

	tcl_cmd->buf_addr_info.info0 =
		FIELD_PREP(BUFFER_ADDR_INFO0_ADDR, ti->paddr);
	tcl_cmd->buf_addr_info.info1 =
		FIELD_PREP(BUFFER_ADDR_INFO1_ADDR,
			   ((uint64_t)ti->paddr >> HAL_ADDR_MSB_REG_SHIFT));
	tcl_cmd->buf_addr_info.info1 |=
		FIELD_PREP(BUFFER_ADDR_INFO1_RET_BUF_MGR,
			   (ti->ring_id + HAL_RX_BUF_RBM_SW0_BM)) |
		FIELD_PREP(BUFFER_ADDR_INFO1_SW_COOKIE, ti->desc_id);

	tcl_cmd->info0 =
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_DESC_TYPE, ti->type) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_ENCAP_TYPE, ti->encap_type) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_ENCRYPT_TYPE,
			   ti->encrypt_type) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_SEARCH_TYPE,
			   ti->search_type) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_ADDR_EN,
			   ti->addr_search_flags) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO0_CMD_NUM,
			   ti->meta_data_flags);

	tcl_cmd->info1 = ti->flags0 |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO1_DATA_LEN, ti->data_len) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO1_PKT_OFFSET, ti->pkt_offset);

	tcl_cmd->info2 = ti->flags1 |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO2_TID, ti->tid) |
		FIELD_PREP(HAL_TCL_DATA_CMD_INFO2_LMAC_ID, ti->lmac_id);

	tcl_cmd->info3 = FIELD_PREP(HAL_TCL_DATA_CMD_INFO3_DSCP_TID_TABLE_IDX,
				    ti->dscp_tid_tbl_idx) |
			 FIELD_PREP(HAL_TCL_DATA_CMD_INFO3_SEARCH_INDEX,
				    ti->bss_ast_hash);
	tcl_cmd->info4 = 0;
}

void ath11k_hal_tx_set_dscp_tid_map(struct ath11k_base *ab, int id)
{
	u32 ctrl_reg_val;
	u32 addr;
	u8 hw_map_val[HAL_DSCP_TID_TBL_SIZE];
	int i;
	u32 value;
	int cnt = 0;

	ctrl_reg_val = ath11k_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;
	ath11k_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; i < DSCP_TID_MAP_TBL_ENTRY_SIZE; i += 8) {
		value = FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP0,
				   dscp_tid_map[i]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP1,
				   dscp_tid_map[i + 1]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP2,
				   dscp_tid_map[i + 2]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP3,
				   dscp_tid_map[i + 3]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP4,
				   dscp_tid_map[i + 4]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP5,
				   dscp_tid_map[i + 5]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP6,
				   dscp_tid_map[i + 6]) |
			FIELD_PREP(HAL_TCL1_RING_FIELD_DSCP_TID_MAP7,
				   dscp_tid_map[i + 7]);
		memcpy(&hw_map_val[cnt], (u8 *)&value, 3);
		cnt += 3;
	}

	for (i = 0; i < HAL_DSCP_TID_TBL_SIZE; i += 4) {
		ath11k_hif_write32(ab, addr, *(u32 *)&hw_map_val[i]);
		addr += 4;
	}

	/* Disable read/write access */
	ctrl_reg_val = ath11k_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;
	ath11k_hif_write32(ab, HAL_SEQ_WCSS_UMAC_TCL_REG +
			   HAL_TCL1_RING_CMN_CTRL_REG,
			   ctrl_reg_val);
}

void ath11k_hal_tx_init_data_ring(struct ath11k_base *ab, struct hal_srng *srng)
{
	struct hal_srng_params params;
	struct hal_tlv_hdr *tlv;
	int i, entry_size;
	u8 *desc;

	memset(&params, 0, sizeof(params));

	entry_size = ath11k_hal_srng_get_entrysize(HAL_TCL_DATA);
	ath11k_hal_srng_get_params(ab, srng, &params);
	desc = (u8 *)params.ring_base_vaddr;

	for (i = 0; i < params.num_entries; i++) {
		tlv = (struct hal_tlv_hdr *)desc;
		tlv->tl = FIELD_PREP(HAL_TLV_HDR_TAG, HAL_TCL_DATA_CMD) |
			  FIELD_PREP(HAL_TLV_HDR_LEN,
				     sizeof(struct hal_tcl_data_cmd));
		desc += entry_size;
	}
}