android_kernel_samsung_sm8650_ksu/drivers/net/wwan/t7xx/t7xx_dpmaif.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2021, MediaTek Inc.
 * Copyright (c) 2021-2022, Intel Corporation.
 *
 * Authors:
 *  Amir Hanania <[email protected]>
 *  Haijun Liu <[email protected]>
 *  Moises Veleta <[email protected]>
 *  Ricardo Martinez <[email protected]>
 *
 * Contributors:
 *  Andy Shevchenko <[email protected]>
 *  Chiranjeevi Rapolu <[email protected]>
 *  Eliot Lee <[email protected]>
 *  Sreehari Kancharla <[email protected]>
 */

#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/dev_printk.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/types.h>

#include "t7xx_dpmaif.h"
#include "t7xx_reg.h"

#define ioread32_poll_timeout_atomic(addr, val, cond, delay_us, timeout_us) \
	readx_poll_timeout_atomic(ioread32, addr, val, cond, delay_us, timeout_us)

static int t7xx_dpmaif_init_intr(struct dpmaif_hw_info *hw_info)
{
	struct dpmaif_isr_en_mask *isr_en_msk = &hw_info->isr_en_mask;
	u32 value, ul_intr_enable, dl_intr_enable;
	int ret;

	ul_intr_enable = DP_UL_INT_ERR_MSK | DP_UL_INT_QDONE_MSK;
	isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable;
	iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);

	/* Set interrupt enable mask */
	iowrite32(ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0);
	iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0);

	/* Check mask status */
	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
					   value, (value & ul_intr_enable) != ul_intr_enable, 0,
					   DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (ret)
		return ret;

	dl_intr_enable = DP_DL_INT_PITCNT_LEN_ERR | DP_DL_INT_BATCNT_LEN_ERR;
	isr_en_msk->ap_dl_l2intr_err_en_msk = dl_intr_enable;
	ul_intr_enable = DPMAIF_DL_INT_DLQ0_QDONE | DPMAIF_DL_INT_DLQ0_PITCNT_LEN |
		    DPMAIF_DL_INT_DLQ1_QDONE | DPMAIF_DL_INT_DLQ1_PITCNT_LEN;
	isr_en_msk->ap_ul_l2intr_en_msk = ul_intr_enable;
	iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);

	/* Set DL ISR PD enable mask */
	iowrite32(~ul_intr_enable, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0,
					   value, (value & ul_intr_enable) != ul_intr_enable, 0,
					   DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (ret)
		return ret;

	isr_en_msk->ap_udl_ip_busy_en_msk = DPMAIF_UDL_IP_BUSY;
	iowrite32(DPMAIF_AP_IP_BUSY_MASK, hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
	iowrite32(isr_en_msk->ap_udl_ip_busy_en_msk,
		  hw_info->pcie_base + DPMAIF_AO_AP_DLUL_IP_BUSY_MASK);
	value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0);
	value |= DPMAIF_DL_INT_Q2APTOP | DPMAIF_DL_INT_Q2TOQ1;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_AP_L1TIMR0);
	iowrite32(DPMA_HPC_ALL_INT_MASK, hw_info->pcie_base + DPMAIF_HPC_INTR_MASK);

	return 0;
}

static void t7xx_dpmaif_mask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	struct dpmaif_isr_en_mask *isr_en_msk;
	u32 value, ul_int_que_done;
	int ret;

	isr_en_msk = &hw_info->isr_en_mask;
	ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK;
	isr_en_msk->ap_ul_l2intr_en_msk &= ~ul_int_que_done;
	iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMSR0);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
					   value, (value & ul_int_que_done) == ul_int_que_done, 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (ret)
		dev_err(hw_info->dev,
			"Could not mask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
			value);
}

void t7xx_dpmaif_unmask_ulq_intr(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	struct dpmaif_isr_en_mask *isr_en_msk;
	u32 value, ul_int_que_done;
	int ret;

	isr_en_msk = &hw_info->isr_en_mask;
	ul_int_que_done = BIT(q_num + DP_UL_INT_DONE_OFFSET) & DP_UL_INT_QDONE_MSK;
	isr_en_msk->ap_ul_l2intr_en_msk |= ul_int_que_done;
	iowrite32(ul_int_que_done, hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMCR0);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0,
					   value, (value & ul_int_que_done) != ul_int_que_done, 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (ret)
		dev_err(hw_info->dev,
			"Could not unmask the UL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
			value);
}

void t7xx_dpmaif_dl_unmask_batcnt_len_err_intr(struct dpmaif_hw_info *hw_info)
{
	hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_BATCNT_LEN_ERR;
	iowrite32(DP_DL_INT_BATCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
}

void t7xx_dpmaif_dl_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info)
{
	hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= DP_DL_INT_PITCNT_LEN_ERR;
	iowrite32(DP_DL_INT_PITCNT_LEN_ERR, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
}

static u32 t7xx_update_dlq_intr(struct dpmaif_hw_info *hw_info, u32 q_done)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0);
	iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
	return value;
}

static int t7xx_mask_dlq_intr(struct dpmaif_hw_info *hw_info, unsigned int qno)
{
	u32 value, q_done;
	int ret;

	q_done = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE;
	iowrite32(q_done, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);

	ret = read_poll_timeout_atomic(t7xx_update_dlq_intr, value, value & q_done,
				       0, DPMAIF_CHECK_TIMEOUT_US, false, hw_info, q_done);
	if (ret) {
		dev_err(hw_info->dev,
			"Could not mask the DL interrupt. DPMAIF_AO_UL_AP_L2TIMR0 is 0x%x\n",
			value);
		return -ETIMEDOUT;
	}

	hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~q_done;
	return 0;
}

void t7xx_dpmaif_dlq_unmask_rx_done(struct dpmaif_hw_info *hw_info, unsigned int qno)
{
	u32 mask;

	mask = qno == DPF_RX_QNO0 ? DPMAIF_DL_INT_DLQ0_QDONE : DPMAIF_DL_INT_DLQ1_QDONE;
	iowrite32(mask, hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
	hw_info->isr_en_mask.ap_dl_l2intr_en_msk |= mask;
}

void t7xx_dpmaif_clr_ip_busy_sts(struct dpmaif_hw_info *hw_info)
{
	u32 ip_busy_sts;

	ip_busy_sts = ioread32(hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
	iowrite32(ip_busy_sts, hw_info->pcie_base + DPMAIF_AP_IP_BUSY);
}

static void t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info,
							unsigned int qno)
{
	if (qno == DPF_RX_QNO0)
		iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN,
			  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
	else
		iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN,
			  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
}

void t7xx_dpmaif_dlq_unmask_pitcnt_len_err_intr(struct dpmaif_hw_info *hw_info,
						unsigned int qno)
{
	if (qno == DPF_RX_QNO0)
		iowrite32(DPMAIF_DL_INT_DLQ0_PITCNT_LEN,
			  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
	else
		iowrite32(DPMAIF_DL_INT_DLQ1_PITCNT_LEN,
			  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMCR0);
}

void t7xx_dpmaif_ul_clr_all_intr(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_AP_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
}

void t7xx_dpmaif_dl_clr_all_intr(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_AP_APDL_ALL_L2TISAR0_MASK, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
}

static void t7xx_dpmaif_set_intr_para(struct dpmaif_hw_intr_st_para *para,
				      enum dpmaif_hw_intr_type intr_type, unsigned int intr_queue)
{
	para->intr_types[para->intr_cnt] = intr_type;
	para->intr_queues[para->intr_cnt] = intr_queue;
	para->intr_cnt++;
}

/* The para->intr_cnt counter is set to zero before this function is called.
 * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues.
 */
static void t7xx_dpmaif_hw_check_tx_intr(struct dpmaif_hw_info *hw_info,
					 unsigned int intr_status,
					 struct dpmaif_hw_intr_st_para *para)
{
	unsigned long value;

	value = FIELD_GET(DP_UL_INT_QDONE_MSK, intr_status);
	if (value) {
		unsigned int index;

		t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DONE, value);

		for_each_set_bit(index, &value, DPMAIF_TXQ_NUM)
			t7xx_dpmaif_mask_ulq_intr(hw_info, index);
	}

	value = FIELD_GET(DP_UL_INT_EMPTY_MSK, intr_status);
	if (value)
		t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_DRB_EMPTY, value);

	value = FIELD_GET(DP_UL_INT_MD_NOTREADY_MSK, intr_status);
	if (value)
		t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_NOTREADY, value);

	value = FIELD_GET(DP_UL_INT_MD_PWR_NOTREADY_MSK, intr_status);
	if (value)
		t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_MD_PWR_NOTREADY, value);

	value = FIELD_GET(DP_UL_INT_ERR_MSK, intr_status);
	if (value)
		t7xx_dpmaif_set_intr_para(para, DPF_INTR_UL_LEN_ERR, value);

	/* Clear interrupt status */
	iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
}

/* The para->intr_cnt counter is set to zero before this function is called.
 * It does not check for overflow as there is no risk of overflowing intr_types or intr_queues.
 */
static void t7xx_dpmaif_hw_check_rx_intr(struct dpmaif_hw_info *hw_info,
					 unsigned int intr_status,
					 struct dpmaif_hw_intr_st_para *para, int qno)
{
	if (qno == DPF_RX_QNO_DFT) {
		if (intr_status & DP_DL_INT_SKB_LEN_ERR)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_SKB_LEN_ERR, DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_BATCNT_LEN_ERR) {
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_BATCNT_LEN_ERR, DPF_RX_QNO_DFT);
			hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_BATCNT_LEN_ERR;
			iowrite32(DP_DL_INT_BATCNT_LEN_ERR,
				  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
		}

		if (intr_status & DP_DL_INT_PITCNT_LEN_ERR) {
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PITCNT_LEN_ERR, DPF_RX_QNO_DFT);
			hw_info->isr_en_mask.ap_dl_l2intr_en_msk &= ~DP_DL_INT_PITCNT_LEN_ERR;
			iowrite32(DP_DL_INT_PITCNT_LEN_ERR,
				  hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMSR0);
		}

		if (intr_status & DP_DL_INT_PKT_EMPTY_MSK)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_PKT_EMPTY_SET, DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_FRG_EMPTY_MSK)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRG_EMPTY_SET, DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_MTU_ERR_MSK)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_MTU_ERR, DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_FRG_LEN_ERR_MSK)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_FRGCNT_LEN_ERR, DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_Q0_PITCNT_LEN_ERR) {
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_PITCNT_LEN_ERR, BIT(qno));
			t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno);
		}

		if (intr_status & DP_DL_INT_HPC_ENT_TYPE_ERR)
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_HPC_ENT_TYPE_ERR,
						  DPF_RX_QNO_DFT);

		if (intr_status & DP_DL_INT_Q0_DONE) {
			/* Mask RX done interrupt immediately after it occurs, do not clear
			 * the interrupt if the mask operation fails.
			 */
			if (!t7xx_mask_dlq_intr(hw_info, qno))
				t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q0_DONE, BIT(qno));
			else
				intr_status &= ~DP_DL_INT_Q0_DONE;
		}
	} else {
		if (intr_status & DP_DL_INT_Q1_PITCNT_LEN_ERR) {
			t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_PITCNT_LEN_ERR, BIT(qno));
			t7xx_dpmaif_dlq_mask_rx_pitcnt_len_err_intr(hw_info, qno);
		}

		if (intr_status & DP_DL_INT_Q1_DONE) {
			if (!t7xx_mask_dlq_intr(hw_info, qno))
				t7xx_dpmaif_set_intr_para(para, DPF_INTR_DL_Q1_DONE, BIT(qno));
			else
				intr_status &= ~DP_DL_INT_Q1_DONE;
		}
	}

	intr_status |= DP_DL_INT_BATCNT_LEN_ERR;
	/* Clear interrupt status */
	iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
}

/**
 * t7xx_dpmaif_hw_get_intr_cnt() - Reads interrupt status and count from HW.
 * @hw_info: Pointer to struct hw_info.
 * @para: Pointer to struct dpmaif_hw_intr_st_para.
 * @qno: Queue number.
 *
 * Reads RX/TX interrupt status from HW and clears UL/DL status as needed.
 *
 * Return: Interrupt count.
 */
int t7xx_dpmaif_hw_get_intr_cnt(struct dpmaif_hw_info *hw_info,
				struct dpmaif_hw_intr_st_para *para, int qno)
{
	u32 rx_intr_status, tx_intr_status = 0;
	u32 rx_intr_qdone, tx_intr_qdone = 0;

	rx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_APDL_L2TISAR0);
	rx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_APDL_L2TIMR0);

	/* TX interrupt status */
	if (qno == DPF_RX_QNO_DFT) {
		/* All ULQ and DLQ0 interrupts use the same source no need to check ULQ interrupts
		 * when a DLQ1 interrupt has occurred.
		 */
		tx_intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
		tx_intr_qdone = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_AP_L2TIMR0);
	}

	t7xx_dpmaif_clr_ip_busy_sts(hw_info);

	if (qno == DPF_RX_QNO_DFT) {
		/* Do not schedule bottom half again or clear UL interrupt status when we
		 * have already masked it.
		 */
		tx_intr_status &= ~tx_intr_qdone;
		if (tx_intr_status)
			t7xx_dpmaif_hw_check_tx_intr(hw_info, tx_intr_status, para);
	}

	if (rx_intr_status) {
		if (qno == DPF_RX_QNO0) {
			rx_intr_status &= DP_DL_Q0_STATUS_MASK;
			if (rx_intr_qdone & DPMAIF_DL_INT_DLQ0_QDONE)
				/* Do not schedule bottom half again or clear DL
				 * queue done interrupt status when we have already masked it.
				 */
				rx_intr_status &= ~DP_DL_INT_Q0_DONE;
		} else {
			rx_intr_status &= DP_DL_Q1_STATUS_MASK;
			if (rx_intr_qdone & DPMAIF_DL_INT_DLQ1_QDONE)
				rx_intr_status &= ~DP_DL_INT_Q1_DONE;
		}

		if (rx_intr_status)
			t7xx_dpmaif_hw_check_rx_intr(hw_info, rx_intr_status, para, qno);
	}

	return para->intr_cnt;
}

static int t7xx_dpmaif_sram_init(struct dpmaif_hw_info *hw_info)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AP_MEM_CLR);
	value |= DPMAIF_MEM_CLR;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AP_MEM_CLR);

	return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_MEM_CLR,
					    value, !(value & DPMAIF_MEM_CLR), 0,
					    DPMAIF_CHECK_INIT_TIMEOUT_US);
}

static void t7xx_dpmaif_hw_reset(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_ASSERT);
	udelay(2);
	iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_ASSERT);
	udelay(2);
	iowrite32(DPMAIF_AP_AO_RST_BIT, hw_info->pcie_base + DPMAIF_AP_AO_RGU_DEASSERT);
	udelay(2);
	iowrite32(DPMAIF_AP_RST_BIT, hw_info->pcie_base + DPMAIF_AP_RGU_DEASSERT);
	udelay(2);
}

static int t7xx_dpmaif_hw_config(struct dpmaif_hw_info *hw_info)
{
	u32 ap_port_mode;
	int ret;

	t7xx_dpmaif_hw_reset(hw_info);

	ret = t7xx_dpmaif_sram_init(hw_info);
	if (ret)
		return ret;

	ap_port_mode = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	ap_port_mode |= DPMAIF_PORT_MODE_PCIE;
	iowrite32(ap_port_mode, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	iowrite32(DPMAIF_CG_EN, hw_info->pcie_base + DPMAIF_AP_CG_EN);
	return 0;
}

static void t7xx_dpmaif_pcie_dpmaif_sign(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_PCIE_MODE_SET_VALUE, hw_info->pcie_base + DPMAIF_UL_RESERVE_AO_RW);
}

static void t7xx_dpmaif_dl_performance(struct dpmaif_hw_info *hw_info)
{
	u32 enable_bat_cache, enable_pit_burst;

	enable_bat_cache = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
	enable_bat_cache |= DPMAIF_DL_BAT_CACHE_PRI;
	iowrite32(enable_bat_cache, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);

	enable_pit_burst = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	enable_pit_burst |= DPMAIF_DL_BURST_PIT_EN;
	iowrite32(enable_pit_burst, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
}

 /* DPMAIF DL DLQ part HW setting */

static void t7xx_dpmaif_hw_hpc_cntl_set(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = DPMAIF_HPC_DLQ_PATH_MODE | DPMAIF_HPC_ADD_MODE_DF << 2;
	value |= DPMAIF_HASH_PRIME_DF << 4;
	value |= DPMAIF_HPC_TOTAL_NUM << 8;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_HPC_CNTL);
}

static void t7xx_dpmaif_hw_agg_cfg_set(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = DPMAIF_AGG_MAX_LEN_DF | DPMAIF_AGG_TBL_ENT_NUM_DF << 16;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_DLQ_AGG_CFG);
}

static void t7xx_dpmaif_hw_hash_bit_choose_set(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_DLQ_HASH_BIT_CHOOSE_DF,
		  hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_INIT_CON5);
}

static void t7xx_dpmaif_hw_mid_pit_timeout_thres_set(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_MID_TIMEOUT_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT0);
}

static void t7xx_dpmaif_hw_dlq_timeout_thres_set(struct dpmaif_hw_info *hw_info)
{
	unsigned int value, i;

	/* Each register holds two DLQ threshold timeout values */
	for (i = 0; i < DPMAIF_HPC_MAX_TOTAL_NUM / 2; i++) {
		value = FIELD_PREP(DPMAIF_DLQ_LOW_TIMEOUT_THRES_MKS, DPMAIF_DLQ_TIMEOUT_THRES_DF);
		value |= FIELD_PREP(DPMAIF_DLQ_HIGH_TIMEOUT_THRES_MSK,
				    DPMAIF_DLQ_TIMEOUT_THRES_DF);
		iowrite32(value,
			  hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TIMEOUT1 + sizeof(u32) * i);
	}
}

static void t7xx_dpmaif_hw_dlq_start_prs_thres_set(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_DLQ_PRS_THRES_DF, hw_info->pcie_base + DPMAIF_AO_DL_DLQPIT_TRIG_THRES);
}

static void t7xx_dpmaif_dl_dlq_hpc_hw_init(struct dpmaif_hw_info *hw_info)
{
	t7xx_dpmaif_hw_hpc_cntl_set(hw_info);
	t7xx_dpmaif_hw_agg_cfg_set(hw_info);
	t7xx_dpmaif_hw_hash_bit_choose_set(hw_info);
	t7xx_dpmaif_hw_mid_pit_timeout_thres_set(hw_info);
	t7xx_dpmaif_hw_dlq_timeout_thres_set(hw_info);
	t7xx_dpmaif_hw_dlq_start_prs_thres_set(hw_info);
}

static int t7xx_dpmaif_dl_bat_init_done(struct dpmaif_hw_info *hw_info, bool frg_en)
{
	u32 value, dl_bat_init = 0;
	int ret;

	if (frg_en)
		dl_bat_init = DPMAIF_DL_BAT_FRG_INIT;

	dl_bat_init |= DPMAIF_DL_BAT_INIT_ALLSET;
	dl_bat_init |= DPMAIF_DL_BAT_INIT_EN;

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
					   value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
					   DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (ret) {
		dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n");
		return ret;
	}

	iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
					   value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
					   DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (ret)
		dev_err(hw_info->dev, "Data plane modem DL BAT initialization failed\n");

	return ret;
}

static void t7xx_dpmaif_dl_set_bat_base_addr(struct dpmaif_hw_info *hw_info,
					     dma_addr_t addr)
{
	iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON0);
	iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON3);
}

static void t7xx_dpmaif_dl_set_bat_size(struct dpmaif_hw_info *hw_info, unsigned int size)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
	value &= ~DPMAIF_BAT_SIZE_MSK;
	value |= size & DPMAIF_BAT_SIZE_MSK;
	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
}

static void t7xx_dpmaif_dl_bat_en(struct dpmaif_hw_info *hw_info, bool enable)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);

	if (enable)
		value |= DPMAIF_BAT_EN_MSK;
	else
		value &= ~DPMAIF_BAT_EN_MSK;

	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
}

static void t7xx_dpmaif_dl_set_ao_bid_maxcnt(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
	value &= ~DPMAIF_BAT_BID_MAXCNT_MSK;
	value |= FIELD_PREP(DPMAIF_BAT_BID_MAXCNT_MSK, DPMAIF_HW_PKT_BIDCNT);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
}

static void t7xx_dpmaif_dl_set_ao_mtu(struct dpmaif_hw_info *hw_info)
{
	iowrite32(DPMAIF_HW_MTU_SIZE, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON1);
}

static void t7xx_dpmaif_dl_set_ao_pit_chknum(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
	value &= ~DPMAIF_PIT_CHK_NUM_MSK;
	value |= FIELD_PREP(DPMAIF_PIT_CHK_NUM_MSK, DPMAIF_HW_CHK_PIT_NUM);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
}

static void t7xx_dpmaif_dl_set_ao_remain_minsz(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
	value &= ~DPMAIF_BAT_REMAIN_MINSZ_MSK;
	value |= FIELD_PREP(DPMAIF_BAT_REMAIN_MINSZ_MSK,
			    DPMAIF_HW_BAT_REMAIN / DPMAIF_BAT_REMAIN_SZ_BASE);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON0);
}

static void t7xx_dpmaif_dl_set_ao_bat_bufsz(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
	value &= ~DPMAIF_BAT_BUF_SZ_MSK;
	value |= FIELD_PREP(DPMAIF_BAT_BUF_SZ_MSK,
			    DPMAIF_HW_BAT_PKTBUF / DPMAIF_BAT_BUFFER_SZ_BASE);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
}

static void t7xx_dpmaif_dl_set_ao_bat_rsv_length(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
	value &= ~DPMAIF_BAT_RSV_LEN_MSK;
	value |= DPMAIF_HW_BAT_RSVLEN;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PKTINFO_CON2);
}

static void t7xx_dpmaif_dl_set_pkt_alignment(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	value &= ~DPMAIF_PKT_ALIGN_MSK;
	value |= DPMAIF_PKT_ALIGN_EN;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
}

static void t7xx_dpmaif_dl_set_pkt_checksum(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	value |= DPMAIF_DL_PKT_CHECKSUM_EN;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
}

static void t7xx_dpmaif_dl_set_ao_frg_check_thres(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
	value &= ~DPMAIF_FRG_CHECK_THRES_MSK;
	value |= DPMAIF_HW_CHK_FRG_NUM;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
}

static void t7xx_dpmaif_dl_set_ao_frg_bufsz(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
	value &= ~DPMAIF_FRG_BUF_SZ_MSK;
	value |= FIELD_PREP(DPMAIF_FRG_BUF_SZ_MSK,
			    DPMAIF_HW_FRG_PKTBUF / DPMAIF_FRG_BUFFER_SZ_BASE);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
}

static void t7xx_dpmaif_dl_frg_ao_en(struct dpmaif_hw_info *hw_info, bool enable)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);

	if (enable)
		value |= DPMAIF_FRG_EN_MSK;
	else
		value &= ~DPMAIF_FRG_EN_MSK;

	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_FRG_THRES);
}

static void t7xx_dpmaif_dl_set_ao_bat_check_thres(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
	value &= ~DPMAIF_BAT_CHECK_THRES_MSK;
	value |= FIELD_PREP(DPMAIF_BAT_CHECK_THRES_MSK, DPMAIF_HW_CHK_BAT_NUM);
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_RDY_CHK_THRES);
}

static void t7xx_dpmaif_dl_set_pit_seqnum(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END);
	value &= ~DPMAIF_DL_PIT_SEQ_MSK;
	value |= DPMAIF_DL_PIT_SEQ_VALUE;
	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_DL_PIT_SEQ_END);
}

static void t7xx_dpmaif_dl_set_dlq_pit_base_addr(struct dpmaif_hw_info *hw_info,
						 dma_addr_t addr)
{
	iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON0);
	iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON4);
}

static void t7xx_dpmaif_dl_set_dlq_pit_size(struct dpmaif_hw_info *hw_info, unsigned int size)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1);
	value &= ~DPMAIF_PIT_SIZE_MSK;
	value |= size & DPMAIF_PIT_SIZE_MSK;
	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON1);
	iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON2);
	iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
	iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON5);
	iowrite32(0, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON6);
}

static void t7xx_dpmaif_dl_dlq_pit_en(struct dpmaif_hw_info *hw_info)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
	value |= DPMAIF_DLQPIT_EN_MSK;
	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT_CON3);
}

static void t7xx_dpmaif_dl_dlq_pit_init_done(struct dpmaif_hw_info *hw_info,
					     unsigned int pit_idx)
{
	unsigned int dl_pit_init;
	int timeout;
	u32 value;

	dl_pit_init = DPMAIF_DL_PIT_INIT_ALLSET;
	dl_pit_init |= (pit_idx << DPMAIF_DLQPIT_CHAN_OFS);
	dl_pit_init |= DPMAIF_DL_PIT_INIT_EN;

	timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT,
					       value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY),
					       DPMAIF_CHECK_DELAY_US,
					       DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (timeout) {
		dev_err(hw_info->dev, "Data plane modem DL PIT is not ready\n");
		return;
	}

	iowrite32(dl_pit_init, hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT);
	timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_INIT,
					       value, !(value & DPMAIF_DL_PIT_INIT_NOT_READY),
					       DPMAIF_CHECK_DELAY_US,
					       DPMAIF_CHECK_INIT_TIMEOUT_US);
	if (timeout)
		dev_err(hw_info->dev, "Data plane modem DL PIT initialization failed\n");
}

static void t7xx_dpmaif_config_dlq_pit_hw(struct dpmaif_hw_info *hw_info, unsigned int q_num,
					  struct dpmaif_dl *dl_que)
{
	t7xx_dpmaif_dl_set_dlq_pit_base_addr(hw_info, dl_que->pit_base);
	t7xx_dpmaif_dl_set_dlq_pit_size(hw_info, dl_que->pit_size_cnt);
	t7xx_dpmaif_dl_dlq_pit_en(hw_info);
	t7xx_dpmaif_dl_dlq_pit_init_done(hw_info, q_num);
}

static void t7xx_dpmaif_config_all_dlq_hw(struct dpmaif_hw_info *hw_info)
{
	int i;

	for (i = 0; i < DPMAIF_RXQ_NUM; i++)
		t7xx_dpmaif_config_dlq_pit_hw(hw_info, i, &hw_info->dl_que[i]);
}

static void t7xx_dpmaif_dl_all_q_en(struct dpmaif_hw_info *hw_info, bool enable)
{
	u32 dl_bat_init, value;
	int timeout;

	value = ioread32(hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);

	if (enable)
		value |= DPMAIF_BAT_EN_MSK;
	else
		value &= ~DPMAIF_BAT_EN_MSK;

	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_INIT_CON1);
	dl_bat_init = DPMAIF_DL_BAT_INIT_ONLY_ENABLE_BIT;
	dl_bat_init |= DPMAIF_DL_BAT_INIT_EN;

	timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
					       value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
					       DPMAIF_CHECK_TIMEOUT_US);
	if (timeout)
		dev_err(hw_info->dev, "Timeout updating BAT setting to HW\n");

	iowrite32(dl_bat_init, hw_info->pcie_base + DPMAIF_DL_BAT_INIT);
	timeout = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_INIT,
					       value, !(value & DPMAIF_DL_BAT_INIT_NOT_READY), 0,
					       DPMAIF_CHECK_TIMEOUT_US);
	if (timeout)
		dev_err(hw_info->dev, "Data plane modem DL BAT is not ready\n");
}

static int t7xx_dpmaif_config_dlq_hw(struct dpmaif_hw_info *hw_info)
{
	struct dpmaif_dl *dl_que;
	int ret;

	t7xx_dpmaif_dl_dlq_hpc_hw_init(hw_info);

	dl_que = &hw_info->dl_que[0]; /* All queues share one BAT/frag BAT table */
	if (!dl_que->que_started)
		return -EBUSY;

	t7xx_dpmaif_dl_set_ao_remain_minsz(hw_info);
	t7xx_dpmaif_dl_set_ao_bat_bufsz(hw_info);
	t7xx_dpmaif_dl_set_ao_frg_bufsz(hw_info);
	t7xx_dpmaif_dl_set_ao_bat_rsv_length(hw_info);
	t7xx_dpmaif_dl_set_ao_bid_maxcnt(hw_info);
	t7xx_dpmaif_dl_set_pkt_alignment(hw_info);
	t7xx_dpmaif_dl_set_pit_seqnum(hw_info);
	t7xx_dpmaif_dl_set_ao_mtu(hw_info);
	t7xx_dpmaif_dl_set_ao_pit_chknum(hw_info);
	t7xx_dpmaif_dl_set_ao_bat_check_thres(hw_info);
	t7xx_dpmaif_dl_set_ao_frg_check_thres(hw_info);
	t7xx_dpmaif_dl_frg_ao_en(hw_info, true);

	t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->frg_base);
	t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->frg_size_cnt);
	t7xx_dpmaif_dl_bat_en(hw_info, true);

	ret = t7xx_dpmaif_dl_bat_init_done(hw_info, true);
	if (ret)
		return ret;

	t7xx_dpmaif_dl_set_bat_base_addr(hw_info, dl_que->bat_base);
	t7xx_dpmaif_dl_set_bat_size(hw_info, dl_que->bat_size_cnt);
	t7xx_dpmaif_dl_bat_en(hw_info, false);

	ret = t7xx_dpmaif_dl_bat_init_done(hw_info, false);
	if (ret)
		return ret;

	/* Init PIT (two PIT table) */
	t7xx_dpmaif_config_all_dlq_hw(hw_info);
	t7xx_dpmaif_dl_all_q_en(hw_info, true);
	t7xx_dpmaif_dl_set_pkt_checksum(hw_info);
	return 0;
}

static void t7xx_dpmaif_ul_update_drb_size(struct dpmaif_hw_info *hw_info,
					   unsigned int q_num, unsigned int size)
{
	unsigned int value;

	value = ioread32(hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num));
	value &= ~DPMAIF_DRB_SIZE_MSK;
	value |= size & DPMAIF_DRB_SIZE_MSK;
	iowrite32(value, hw_info->pcie_base + DPMAIF_UL_DRBSIZE_ADDRH_n(q_num));
}

static void t7xx_dpmaif_ul_update_drb_base_addr(struct dpmaif_hw_info *hw_info,
						unsigned int q_num, dma_addr_t addr)
{
	iowrite32(lower_32_bits(addr), hw_info->pcie_base + DPMAIF_ULQSAR_n(q_num));
	iowrite32(upper_32_bits(addr), hw_info->pcie_base + DPMAIF_UL_DRB_ADDRH_n(q_num));
}

static void t7xx_dpmaif_ul_rdy_en(struct dpmaif_hw_info *hw_info,
				  unsigned int q_num, bool ready)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);

	if (ready)
		value |= BIT(q_num);
	else
		value &= ~BIT(q_num);

	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
}

static void t7xx_dpmaif_ul_arb_en(struct dpmaif_hw_info *hw_info,
				  unsigned int q_num, bool enable)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);

	if (enable)
		value |= BIT(q_num + 8);
	else
		value &= ~BIT(q_num + 8);

	iowrite32(value, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
}

static void t7xx_dpmaif_config_ulq_hw(struct dpmaif_hw_info *hw_info)
{
	struct dpmaif_ul *ul_que;
	int i;

	for (i = 0; i < DPMAIF_TXQ_NUM; i++) {
		ul_que = &hw_info->ul_que[i];
		if (ul_que->que_started) {
			t7xx_dpmaif_ul_update_drb_size(hw_info, i, ul_que->drb_size_cnt *
						       DPMAIF_UL_DRB_SIZE_WORD);
			t7xx_dpmaif_ul_update_drb_base_addr(hw_info, i, ul_que->drb_base);
			t7xx_dpmaif_ul_rdy_en(hw_info, i, true);
			t7xx_dpmaif_ul_arb_en(hw_info, i, true);
		} else {
			t7xx_dpmaif_ul_arb_en(hw_info, i, false);
		}
	}
}

static int t7xx_dpmaif_hw_init_done(struct dpmaif_hw_info *hw_info)
{
	u32 ap_cfg;
	int ret;

	ap_cfg = ioread32(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG);
	ap_cfg |= DPMAIF_SRAM_SYNC;
	iowrite32(ap_cfg, hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_AP_OVERWRITE_CFG,
					   ap_cfg, !(ap_cfg & DPMAIF_SRAM_SYNC), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (ret)
		return ret;

	iowrite32(DPMAIF_UL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_UL_INIT_SET);
	iowrite32(DPMAIF_DL_INIT_DONE, hw_info->pcie_base + DPMAIF_AO_DL_INIT_SET);
	return 0;
}

static bool t7xx_dpmaif_dl_idle_check(struct dpmaif_hw_info *hw_info)
{
	u32 dpmaif_dl_is_busy = ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY);

	return !(dpmaif_dl_is_busy & DPMAIF_DL_IDLE_STS);
}

static void t7xx_dpmaif_ul_all_q_en(struct dpmaif_hw_info *hw_info, bool enable)
{
	u32 ul_arb_en = ioread32(hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);

	if (enable)
		ul_arb_en |= DPMAIF_UL_ALL_QUE_ARB_EN;
	else
		ul_arb_en &= ~DPMAIF_UL_ALL_QUE_ARB_EN;

	iowrite32(ul_arb_en, hw_info->pcie_base + DPMAIF_AO_UL_CHNL_ARB0);
}

static bool t7xx_dpmaif_ul_idle_check(struct dpmaif_hw_info *hw_info)
{
	u32 dpmaif_ul_is_busy = ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY);

	return !(dpmaif_ul_is_busy & DPMAIF_UL_IDLE_STS);
}

void t7xx_dpmaif_ul_update_hw_drb_cnt(struct dpmaif_hw_info *hw_info, unsigned int q_num,
				      unsigned int drb_entry_cnt)
{
	u32 ul_update, value;
	int err;

	ul_update = drb_entry_cnt & DPMAIF_UL_ADD_COUNT_MASK;
	ul_update |= DPMAIF_UL_ADD_UPDATE;

	err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num),
					   value, !(value & DPMAIF_UL_ADD_NOT_READY), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (err) {
		dev_err(hw_info->dev, "UL add is not ready\n");
		return;
	}

	iowrite32(ul_update, hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num));

	err = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_ULQ_ADD_DESC_CH_n(q_num),
					   value, !(value & DPMAIF_UL_ADD_NOT_READY), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (err)
		dev_err(hw_info->dev, "Timeout updating UL add\n");
}

unsigned int t7xx_dpmaif_ul_get_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	unsigned int value = ioread32(hw_info->pcie_base + DPMAIF_ULQ_STA0_n(q_num));

	return FIELD_GET(DPMAIF_UL_DRB_RIDX_MSK, value) / DPMAIF_UL_DRB_SIZE_WORD;
}

int t7xx_dpmaif_dlq_add_pit_remain_cnt(struct dpmaif_hw_info *hw_info, unsigned int dlq_pit_idx,
				       unsigned int pit_remain_cnt)
{
	u32 dl_update, value;
	int ret;

	dl_update = pit_remain_cnt & DPMAIF_PIT_REM_CNT_MSK;
	dl_update |= DPMAIF_DL_ADD_UPDATE | (dlq_pit_idx << DPMAIF_ADD_DLQ_PIT_CHAN_OFS);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD,
					   value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (ret) {
		dev_err(hw_info->dev, "Data plane modem is not ready to add dlq\n");
		return ret;
	}

	iowrite32(dl_update, hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD);

	ret = ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_DLQPIT_ADD,
					   value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
	if (ret) {
		dev_err(hw_info->dev, "Data plane modem add dlq failed\n");
		return ret;
	}

	return 0;
}

unsigned int t7xx_dpmaif_dl_dlq_pit_get_wr_idx(struct dpmaif_hw_info *hw_info,
					       unsigned int dlq_pit_idx)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_DLQ_WR_IDX +
			 dlq_pit_idx * DLQ_PIT_IDX_SIZE);
	return value & DPMAIF_DL_RD_WR_IDX_MSK;
}

static int t7xx_dl_add_timedout(struct dpmaif_hw_info *hw_info)
{
	u32 value;

	return ioread32_poll_timeout_atomic(hw_info->pcie_base + DPMAIF_DL_BAT_ADD,
					   value, !(value & DPMAIF_DL_ADD_NOT_READY), 0,
					   DPMAIF_CHECK_TIMEOUT_US);
}

int t7xx_dpmaif_dl_snd_hw_bat_cnt(struct dpmaif_hw_info *hw_info, unsigned int bat_entry_cnt)
{
	unsigned int value;

	if (t7xx_dl_add_timedout(hw_info)) {
		dev_err(hw_info->dev, "DL add BAT not ready\n");
		return -EBUSY;
	}

	value = bat_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK;
	value |= DPMAIF_DL_ADD_UPDATE;
	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD);

	if (t7xx_dl_add_timedout(hw_info)) {
		dev_err(hw_info->dev, "DL add BAT timeout\n");
		return -EBUSY;
	}

	return 0;
}

unsigned int t7xx_dpmaif_dl_get_bat_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_RD_IDX);
	return value & DPMAIF_DL_RD_WR_IDX_MSK;
}

unsigned int t7xx_dpmaif_dl_get_bat_wr_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_BAT_WR_IDX);
	return value & DPMAIF_DL_RD_WR_IDX_MSK;
}

int t7xx_dpmaif_dl_snd_hw_frg_cnt(struct dpmaif_hw_info *hw_info, unsigned int frg_entry_cnt)
{
	unsigned int value;

	if (t7xx_dl_add_timedout(hw_info)) {
		dev_err(hw_info->dev, "Data plane modem is not ready to add frag DLQ\n");
		return -EBUSY;
	}

	value = frg_entry_cnt & DPMAIF_DL_ADD_COUNT_MASK;
	value |= DPMAIF_DL_FRG_ADD_UPDATE | DPMAIF_DL_ADD_UPDATE;
	iowrite32(value, hw_info->pcie_base + DPMAIF_DL_BAT_ADD);

	if (t7xx_dl_add_timedout(hw_info)) {
		dev_err(hw_info->dev, "Data plane modem add frag DLQ failed");
		return -EBUSY;
	}

	return 0;
}

unsigned int t7xx_dpmaif_dl_get_frg_rd_idx(struct dpmaif_hw_info *hw_info, unsigned int q_num)
{
	u32 value;

	value = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_FRGBAT_RD_IDX);
	return value & DPMAIF_DL_RD_WR_IDX_MSK;
}

static void t7xx_dpmaif_set_queue_property(struct dpmaif_hw_info *hw_info,
					   struct dpmaif_hw_params *init_para)
{
	struct dpmaif_dl *dl_que;
	struct dpmaif_ul *ul_que;
	int i;

	for (i = 0; i < DPMAIF_RXQ_NUM; i++) {
		dl_que = &hw_info->dl_que[i];
		dl_que->bat_base = init_para->pkt_bat_base_addr[i];
		dl_que->bat_size_cnt = init_para->pkt_bat_size_cnt[i];
		dl_que->pit_base = init_para->pit_base_addr[i];
		dl_que->pit_size_cnt = init_para->pit_size_cnt[i];
		dl_que->frg_base = init_para->frg_bat_base_addr[i];
		dl_que->frg_size_cnt = init_para->frg_bat_size_cnt[i];
		dl_que->que_started = true;
	}

	for (i = 0; i < DPMAIF_TXQ_NUM; i++) {
		ul_que = &hw_info->ul_que[i];
		ul_que->drb_base = init_para->drb_base_addr[i];
		ul_que->drb_size_cnt = init_para->drb_size_cnt[i];
		ul_que->que_started = true;
	}
}

/**
 * t7xx_dpmaif_hw_stop_all_txq() - Stop all TX queues.
 * @hw_info: Pointer to struct hw_info.
 *
 * Disable HW UL queues. Checks busy UL queues to go to idle
 * with an attempt count of 1000000.
 *
 * Return:
 * * 0			- Success
 * * -ETIMEDOUT		- Timed out checking busy queues
 */
int t7xx_dpmaif_hw_stop_all_txq(struct dpmaif_hw_info *hw_info)
{
	int count = 0;

	t7xx_dpmaif_ul_all_q_en(hw_info, false);
	while (t7xx_dpmaif_ul_idle_check(hw_info)) {
		if (++count >= DPMAIF_MAX_CHECK_COUNT) {
			dev_err(hw_info->dev, "Failed to stop TX, status: 0x%x\n",
				ioread32(hw_info->pcie_base + DPMAIF_UL_CHK_BUSY));
			return -ETIMEDOUT;
		}
	}

	return 0;
}

/**
 * t7xx_dpmaif_hw_stop_all_rxq() - Stop all RX queues.
 * @hw_info: Pointer to struct hw_info.
 *
 * Disable HW DL queue. Checks busy UL queues to go to idle
 * with an attempt count of 1000000.
 * Check that HW PIT write index equals read index with the same
 * attempt count.
 *
 * Return:
 * * 0			- Success.
 * * -ETIMEDOUT		- Timed out checking busy queues.
 */
int t7xx_dpmaif_hw_stop_all_rxq(struct dpmaif_hw_info *hw_info)
{
	unsigned int wr_idx, rd_idx;
	int count = 0;

	t7xx_dpmaif_dl_all_q_en(hw_info, false);
	while (t7xx_dpmaif_dl_idle_check(hw_info)) {
		if (++count >= DPMAIF_MAX_CHECK_COUNT) {
			dev_err(hw_info->dev, "Failed to stop RX, status: 0x%x\n",
				ioread32(hw_info->pcie_base + DPMAIF_DL_CHK_BUSY));
			return -ETIMEDOUT;
		}
	}

	/* Check middle PIT sync done */
	count = 0;
	do {
		wr_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_WR_IDX);
		wr_idx &= DPMAIF_DL_RD_WR_IDX_MSK;
		rd_idx = ioread32(hw_info->pcie_base + DPMAIF_AO_DL_PIT_RD_IDX);
		rd_idx &= DPMAIF_DL_RD_WR_IDX_MSK;

		if (wr_idx == rd_idx)
			return 0;
	} while (++count < DPMAIF_MAX_CHECK_COUNT);

	dev_err(hw_info->dev, "Check middle PIT sync fail\n");
	return -ETIMEDOUT;
}

void t7xx_dpmaif_start_hw(struct dpmaif_hw_info *hw_info)
{
	t7xx_dpmaif_ul_all_q_en(hw_info, true);
	t7xx_dpmaif_dl_all_q_en(hw_info, true);
}

/**
 * t7xx_dpmaif_hw_init() - Initialize HW data path API.
 * @hw_info: Pointer to struct hw_info.
 * @init_param: Pointer to struct dpmaif_hw_params.
 *
 * Configures port mode, clock config, HW interrupt initialization, and HW queue.
 *
 * Return:
 * * 0		- Success.
 * * -ERROR	- Error code from failure sub-initializations.
 */
int t7xx_dpmaif_hw_init(struct dpmaif_hw_info *hw_info, struct dpmaif_hw_params *init_param)
{
	int ret;

	ret = t7xx_dpmaif_hw_config(hw_info);
	if (ret) {
		dev_err(hw_info->dev, "DPMAIF HW config failed\n");
		return ret;
	}

	ret = t7xx_dpmaif_init_intr(hw_info);
	if (ret) {
		dev_err(hw_info->dev, "DPMAIF HW interrupts init failed\n");
		return ret;
	}

	t7xx_dpmaif_set_queue_property(hw_info, init_param);
	t7xx_dpmaif_pcie_dpmaif_sign(hw_info);
	t7xx_dpmaif_dl_performance(hw_info);

	ret = t7xx_dpmaif_config_dlq_hw(hw_info);
	if (ret) {
		dev_err(hw_info->dev, "DPMAIF HW dlq config failed\n");
		return ret;
	}

	t7xx_dpmaif_config_ulq_hw(hw_info);

	ret = t7xx_dpmaif_hw_init_done(hw_info);
	if (ret)
		dev_err(hw_info->dev, "DPMAIF HW queue init failed\n");

	return ret;
}

bool t7xx_dpmaif_ul_clr_done(struct dpmaif_hw_info *hw_info, unsigned int qno)
{
	u32 intr_status;

	intr_status = ioread32(hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
	intr_status &= BIT(DP_UL_INT_DONE_OFFSET + qno);
	if (intr_status) {
		iowrite32(intr_status, hw_info->pcie_base + DPMAIF_AP_L2TISAR0);
		return true;
	}

	return false;
}