rt-thread/bsp/phytium/libraries/standalone/drivers/watchdog/fwdt/fwdt_hw.h

/*
 * Copyright : (C) 2022 Phytium Information Technology, Inc.
 * All Rights Reserved.
 *
 * This program is OPEN SOURCE software: you can redistribute it and/or modify it
 * under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
 * either version 1.0 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the Phytium Public License for more details.
 *
 *
 * FilePath: fwdt_hw.h
 * Date: 2021-08-25 10:27:42
 * LastEditTime: 2022-02-25 11:44:33
 * Description:  This file is for wdt register definition.
 *
 * Modify History:
 *  Ver   Who        Date         Changes
 * ----- ------     --------    --------------------------------------
 * 1.0   wangxiaodong  2022/4/15   init commit
 */

#ifndef FWDT_HW_H
#define FWDT_HW_H

#include "fkernel.h"
#include "fio.h"

#ifdef __cplusplus
extern "C"
{
#endif

/* Watchdog register definitions */

/* refresh frame */
#define FWDT_GWDT_WRR       0x000
#define FWDT_GWDT_W_IIR     0xfcc

/* control frame */
#define FWDT_GWDT_WCS       0x000  /* WCS register */
#define FWDT_GWDT_WOR       0x008
#define FWDT_GWDT_WCVL      0x010
#define FWDT_GWDT_WCVH      0x014

/* Watchdog Control and Status Register */
#define FWDT_GWDT_WCS_WDT_EN    BIT(0)
#define FWDT_GWDT_WCS_WS0       BIT(1)
#define FWDT_GWDT_WCS_WS1       BIT(2)

/***************** Macros (Inline Functions) Definitions *********************/

/**
 * @name: WDT_READ_REG32
 * @msg:  read WDT register
 * @param {u32} addr, base address
 * @param {u32} reg_offset, register offset
 * @return {u32} register value
 */
#define FWDT_READ_REG32(addr, reg_offset) FtIn32((addr) + (u32)(reg_offset))

/**
 * @name: FWDT_WRITE_REG32
 * @msg:  write WDT register
 * @param {u32} addr, base address
 * @param {u32} reg_offset, register offset
 * @param {u32} reg_value, value write to register
 * @return {u32} register value
 */
#define FWDT_WRITE_REG32(addr, reg_offset, reg_value) FtOut32((addr) + (u32)(reg_offset), (u32)(reg_value))

#define FWDT_VERSION_MASK           GENMASK(19, 16)
#define FWDT_CONTINUATION_CODE_MASK GENMASK(11, 8)
#define FWDT_IDENTIFY_CODE_MASK     GENMASK(6, 0)
/**
 * @name: FWdtReadWCVH
 * @msg:  Read wdt wcvh register value. wcvl and wclh register stores the comparison value of the watchdog count.
 *          timeout value = comparison value - sys_cnt.
 * @param {uintptr} addr, pointer to a WdtCtrl base addr.
 * @return {u32} register value
 */

static inline u32 FWdtReadWCVH(uintptr addr)
{
    return FWDT_READ_REG32(addr, FWDT_GWDT_WCVH);
}

/**
 * @name: FWdtReadWCVL
 * @msg:  Read wdt wcvl register value. wcvl and wclh register stores the comparison value of the watchdog count.
 *          timeout value = comparison value - sys_cnt.
 * @param {uintptr} addr, pointer to a WdtCtrl base addr.
 * @return {u32} register value
 */
static inline u32 FWdtReadWCVL(uintptr addr)
{
    return FWDT_READ_REG32(addr, FWDT_GWDT_WCVL);
}

/**
 * @name: FWdtReadWOR
 * @msg:  Read wdt wor register value. used to set timeout value, wor + sys_cnt = wcv.
 * @param {uintptr} addr, pointer to a WdtCtrl base addr.
 * @return {u32} register value
 */
static inline u32 FWdtReadWOR(uintptr addr)
{
    return FWDT_READ_REG32(addr, FWDT_GWDT_WOR);
}

/**
 * @name: FWdtReadWCS
 * @msg:  Read wdt wcs register value. wcs is control and state register. bit0 enable(1) or disable(0) wdt.
 * @param {uintptr} addr, pointer to a WdtCtrl base addr.
 * @return {u32} register value
 */
static inline u32 FWdtReadWCS(uintptr addr)
{
    return FWDT_READ_REG32(addr, FWDT_GWDT_WCS);
}

void FWdtDump(uintptr base_addr);

#ifdef __cplusplus
}
#endif

#endif