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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2021, MediaTek Inc.
* Copyright (c) 2021-2022, Intel Corporation.
*
* Authors:
* Haijun Liu <haijun.liu@mediatek.com>
* Moises Veleta <moises.veleta@intel.com>
* Ricardo Martinez <ricardo.martinez@linux.intel.com>
*
* Contributors:
* Amir Hanania <amir.hanania@intel.com>
* Andy Shevchenko <andriy.shevchenko@linux.intel.com>
* Eliot Lee <eliot.lee@intel.com>
* Sreehari Kancharla <sreehari.kancharla@intel.com>
*/
#include <linux/bits.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/io-64-nonatomic-lo-hi.h>
#include <linux/types.h>
#include "t7xx_cldma.h"
#define ADDR_SIZE 8
void t7xx_cldma_clear_ip_busy(struct t7xx_cldma_hw *hw_info)
{
u32 val;
val = ioread32(hw_info->ap_pdn_base + REG_CLDMA_IP_BUSY);
val |= IP_BUSY_WAKEUP;
iowrite32(val, hw_info->ap_pdn_base + REG_CLDMA_IP_BUSY);
}
/**
* t7xx_cldma_hw_restore() - Restore CLDMA HW registers.
* @hw_info: Pointer to struct t7xx_cldma_hw.
*
* Restore HW after resume. Writes uplink configuration for CLDMA HW.
*/
void t7xx_cldma_hw_restore(struct t7xx_cldma_hw *hw_info)
{
u32 ul_cfg;
ul_cfg = ioread32(hw_info->ap_pdn_base + REG_CLDMA_UL_CFG);
ul_cfg &= ~UL_CFG_BIT_MODE_MASK;
if (hw_info->hw_mode == MODE_BIT_64)
ul_cfg |= UL_CFG_BIT_MODE_64;
else if (hw_info->hw_mode == MODE_BIT_40)
ul_cfg |= UL_CFG_BIT_MODE_40;
else if (hw_info->hw_mode == MODE_BIT_36)
ul_cfg |= UL_CFG_BIT_MODE_36;
iowrite32(ul_cfg, hw_info->ap_pdn_base + REG_CLDMA_UL_CFG);
/* Disable TX and RX invalid address check */
iowrite32(UL_MEM_CHECK_DIS, hw_info->ap_pdn_base + REG_CLDMA_UL_MEM);
iowrite32(DL_MEM_CHECK_DIS, hw_info->ap_pdn_base + REG_CLDMA_DL_MEM);
}
void t7xx_cldma_hw_start_queue(struct t7xx_cldma_hw *hw_info, unsigned int qno,
enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_pdn_base + REG_CLDMA_DL_START_CMD :
hw_info->ap_pdn_base + REG_CLDMA_UL_START_CMD;
val = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
iowrite32(val, reg);
}
void t7xx_cldma_hw_start(struct t7xx_cldma_hw *hw_info)
{
/* Enable the TX & RX interrupts */
iowrite32(TXRX_STATUS_BITMASK, hw_info->ap_pdn_base + REG_CLDMA_L2TIMCR0);
iowrite32(TXRX_STATUS_BITMASK, hw_info->ap_ao_base + REG_CLDMA_L2RIMCR0);
/* Enable the empty queue interrupt */
iowrite32(EMPTY_STATUS_BITMASK, hw_info->ap_pdn_base + REG_CLDMA_L2TIMCR0);
iowrite32(EMPTY_STATUS_BITMASK, hw_info->ap_ao_base + REG_CLDMA_L2RIMCR0);
}
void t7xx_cldma_hw_reset(void __iomem *ao_base)
{
u32 val;
val = ioread32(ao_base + REG_INFRA_RST2_SET);
val |= RST2_PMIC_SW_RST_SET;
iowrite32(val, ao_base + REG_INFRA_RST2_SET);
val = ioread32(ao_base + REG_INFRA_RST4_SET);
val |= RST4_CLDMA1_SW_RST_SET;
iowrite32(val, ao_base + REG_INFRA_RST4_SET);
udelay(1);
val = ioread32(ao_base + REG_INFRA_RST4_CLR);
val |= RST4_CLDMA1_SW_RST_CLR;
iowrite32(val, ao_base + REG_INFRA_RST4_CLR);
val = ioread32(ao_base + REG_INFRA_RST2_CLR);
val |= RST2_PMIC_SW_RST_CLR;
iowrite32(val, ao_base + REG_INFRA_RST2_CLR);
}
bool t7xx_cldma_tx_addr_is_set(struct t7xx_cldma_hw *hw_info, unsigned int qno)
{
u32 offset = REG_CLDMA_UL_START_ADDRL_0 + qno * ADDR_SIZE;
return ioread64_lo_hi(hw_info->ap_pdn_base + offset);
}
void t7xx_cldma_hw_set_start_addr(struct t7xx_cldma_hw *hw_info, unsigned int qno, u64 address,
enum mtk_txrx tx_rx)
{
u32 offset = qno * ADDR_SIZE;
void __iomem *reg;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_DL_START_ADDRL_0 :
hw_info->ap_pdn_base + REG_CLDMA_UL_START_ADDRL_0;
iowrite64_lo_hi(address, reg + offset);
}
void t7xx_cldma_hw_resume_queue(struct t7xx_cldma_hw *hw_info, unsigned int qno,
enum mtk_txrx tx_rx)
{
void __iomem *base = hw_info->ap_pdn_base;
if (tx_rx == MTK_RX)
iowrite32(BIT(qno), base + REG_CLDMA_DL_RESUME_CMD);
else
iowrite32(BIT(qno), base + REG_CLDMA_UL_RESUME_CMD);
}
unsigned int t7xx_cldma_hw_queue_status(struct t7xx_cldma_hw *hw_info, unsigned int qno,
enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 mask, val;
mask = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_DL_STATUS :
hw_info->ap_pdn_base + REG_CLDMA_UL_STATUS;
val = ioread32(reg);
return val & mask;
}
void t7xx_cldma_hw_tx_done(struct t7xx_cldma_hw *hw_info, unsigned int bitmask)
{
unsigned int ch_id;
ch_id = ioread32(hw_info->ap_pdn_base + REG_CLDMA_L2TISAR0);
ch_id &= bitmask;
/* Clear the ch IDs in the TX interrupt status register */
iowrite32(ch_id, hw_info->ap_pdn_base + REG_CLDMA_L2TISAR0);
ioread32(hw_info->ap_pdn_base + REG_CLDMA_L2TISAR0);
}
void t7xx_cldma_hw_rx_done(struct t7xx_cldma_hw *hw_info, unsigned int bitmask)
{
unsigned int ch_id;
ch_id = ioread32(hw_info->ap_pdn_base + REG_CLDMA_L2RISAR0);
ch_id &= bitmask;
/* Clear the ch IDs in the RX interrupt status register */
iowrite32(ch_id, hw_info->ap_pdn_base + REG_CLDMA_L2RISAR0);
ioread32(hw_info->ap_pdn_base + REG_CLDMA_L2RISAR0);
}
unsigned int t7xx_cldma_hw_int_status(struct t7xx_cldma_hw *hw_info, unsigned int bitmask,
enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_pdn_base + REG_CLDMA_L2RISAR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TISAR0;
val = ioread32(reg);
return val & bitmask;
}
void t7xx_cldma_hw_irq_dis_txrx(struct t7xx_cldma_hw *hw_info, unsigned int qno,
enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_L2RIMSR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TIMSR0;
val = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
iowrite32(val, reg);
}
void t7xx_cldma_hw_irq_dis_eq(struct t7xx_cldma_hw *hw_info, unsigned int qno, enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_L2RIMSR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TIMSR0;
val = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
iowrite32(val << EQ_STA_BIT_OFFSET, reg);
}
void t7xx_cldma_hw_irq_en_txrx(struct t7xx_cldma_hw *hw_info, unsigned int qno,
enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_L2RIMCR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TIMCR0;
val = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
iowrite32(val, reg);
}
void t7xx_cldma_hw_irq_en_eq(struct t7xx_cldma_hw *hw_info, unsigned int qno, enum mtk_txrx tx_rx)
{
void __iomem *reg;
u32 val;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_L2RIMCR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TIMCR0;
val = qno == CLDMA_ALL_Q ? CLDMA_ALL_Q : BIT(qno);
iowrite32(val << EQ_STA_BIT_OFFSET, reg);
}
/**
* t7xx_cldma_hw_init() - Initialize CLDMA HW.
* @hw_info: Pointer to struct t7xx_cldma_hw.
*
* Write uplink and downlink configuration to CLDMA HW.
*/
void t7xx_cldma_hw_init(struct t7xx_cldma_hw *hw_info)
{
u32 ul_cfg, dl_cfg;
ul_cfg = ioread32(hw_info->ap_pdn_base + REG_CLDMA_UL_CFG);
dl_cfg = ioread32(hw_info->ap_ao_base + REG_CLDMA_DL_CFG);
/* Configure the DRAM address mode */
ul_cfg &= ~UL_CFG_BIT_MODE_MASK;
dl_cfg &= ~DL_CFG_BIT_MODE_MASK;
if (hw_info->hw_mode == MODE_BIT_64) {
ul_cfg |= UL_CFG_BIT_MODE_64;
dl_cfg |= DL_CFG_BIT_MODE_64;
} else if (hw_info->hw_mode == MODE_BIT_40) {
ul_cfg |= UL_CFG_BIT_MODE_40;
dl_cfg |= DL_CFG_BIT_MODE_40;
} else if (hw_info->hw_mode == MODE_BIT_36) {
ul_cfg |= UL_CFG_BIT_MODE_36;
dl_cfg |= DL_CFG_BIT_MODE_36;
}
iowrite32(ul_cfg, hw_info->ap_pdn_base + REG_CLDMA_UL_CFG);
dl_cfg |= DL_CFG_UP_HW_LAST;
iowrite32(dl_cfg, hw_info->ap_ao_base + REG_CLDMA_DL_CFG);
iowrite32(0, hw_info->ap_ao_base + REG_CLDMA_INT_MASK);
iowrite32(BUSY_MASK_MD, hw_info->ap_ao_base + REG_CLDMA_BUSY_MASK);
iowrite32(UL_MEM_CHECK_DIS, hw_info->ap_pdn_base + REG_CLDMA_UL_MEM);
iowrite32(DL_MEM_CHECK_DIS, hw_info->ap_pdn_base + REG_CLDMA_DL_MEM);
}
void t7xx_cldma_hw_stop_all_qs(struct t7xx_cldma_hw *hw_info, enum mtk_txrx tx_rx)
{
void __iomem *reg;
reg = tx_rx == MTK_RX ? hw_info->ap_pdn_base + REG_CLDMA_DL_STOP_CMD :
hw_info->ap_pdn_base + REG_CLDMA_UL_STOP_CMD;
iowrite32(CLDMA_ALL_Q, reg);
}
void t7xx_cldma_hw_stop(struct t7xx_cldma_hw *hw_info, enum mtk_txrx tx_rx)
{
void __iomem *reg;
reg = tx_rx == MTK_RX ? hw_info->ap_ao_base + REG_CLDMA_L2RIMSR0 :
hw_info->ap_pdn_base + REG_CLDMA_L2TIMSR0;
iowrite32(TXRX_STATUS_BITMASK, reg);
iowrite32(EMPTY_STATUS_BITMASK, reg);
}
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