#pragma once

#include "hw/sysbus.h"
#include "hw/hw.h"
#include "hw/registerfields.h"

#define TYPE_ESP32_GPIO "esp32.gpio"
#define ESP32_GPIO(obj)             OBJECT_CHECK(Esp32GpioState, (obj), TYPE_ESP32_GPIO)
#define ESP32_GPIO_GET_CLASS(obj)   OBJECT_GET_CLASS(Esp32GpioClass, obj, TYPE_ESP32_GPIO)
#define ESP32_GPIO_CLASS(klass)     OBJECT_CLASS_CHECK(Esp32GpioClass, klass, TYPE_ESP32_GPIO)

REG32(GPIO_STRAP, 0x0038)

#define ESP32_STRAP_MODE_FLASH_BOOT 0x12
#define ESP32_STRAP_MODE_UART_BOOT  0x0f

//added by cpu
#define ESP32_GPIO_COUNT 40
#define ESP32_PERIPHERAL_CONFIG_COUNT 256

#define ESP32_GPIO_IRQ_GPIO     "gpio_irq"
#define ESP32_GPIO_NMI_IRQ_GPIO "gpio_nmi_irq"

union GpioConfig{
	struct{
		uint32_t _reserved0_     :2;
		uint32_t padDriver       :1;
		uint32_t _reserved1_     :4;
		uint32_t interruptType   :3;
		uint32_t wakeupEnable    :1;
		uint32_t _reserved2_     :2;
		uint32_t appCpuIntEnable :1;
		uint32_t appCpuNmiEnable :1;
		uint32_t proCpuIntEnable :1;
		uint32_t proCpuNmiEnable :1;
		uint32_t _unknownField_  :1;
		uint32_t _reserved3_     :14;
	};
	
	uint32_t mem;
};

typedef struct Esp32GpioState {
    SysBusDevice parent_obj;

    MemoryRegion iomem;
    qemu_irq irq;
    uint32_t strap_mode;
    
    //added by cpu
    uint32_t outputRegister[2];
    uint32_t outputEnableRegister[2];
    uint32_t inputRegister[2];
    uint32_t interruptStatusRegister[2];
    uint32_t appCpuInterruptStatus[2];
    uint32_t appCpuNmiInterruptStatus[2]; //NMI means Non-Maskable Interrupt
    uint32_t proCpuInterruptStatus[2];
    uint32_t proCpuNmiInterruptStatus[2];
    
    union GpioConfig gpioConfig[ESP32_GPIO_COUNT];
    uint32_t peripheralFunctionInput[ESP32_PERIPHERAL_CONFIG_COUNT];
    uint32_t peripheralFunctionOutput[ESP32_PERIPHERAL_CONFIG_COUNT];
    
    qemu_irq gpioIrq;
    qemu_irq gpioNmiIrq;
    
} Esp32GpioState;

typedef struct Esp32GpioClass {
    SysBusDeviceClass parent_class;
} Esp32GpioClass;