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Annotation of nono/vm/goldfish_tty.h, revision 1.1.1.1

1.1       root        1: //
                      2: // nono
                      3: // Copyright (C) 2024 nono project
                      4: // Licensed under nono-license.txt
                      5: //
                      6: 
                      7: //
                      8: // Goldfish TTY
                      9: //
                     10: 
                     11: #pragma once
                     12: 
                     13: #include "device.h"
                     14: #include "message.h"
                     15: #include <deque>
                     16: 
                     17: class GFPICDevice;
                     18: class HostCOMDevice;
                     19: class MainbusDevice;
                     20: 
                     21: class GFTTYDevice : public IODevice
                     22: {
                     23:        using inherited = IODevice;
                     24: 
                     25:        static const uint32 PUT_CHAR    = 0x00;
                     26:        static const uint32 BYTES_READY = 0x04;
                     27:        static const uint32 COMMAND             = 0x08;
                     28:        static const uint32 DATA_PTR    = 0x10;
                     29:        static const uint32 DATA_LEN    = 0x14;
                     30:        static const uint32 VERSION             = 0x20;
                     31: 
                     32:        static const uint32 CMD_INT_DISABLE             = 0x00;
                     33:        static const uint32 CMD_INT_ENABLE              = 0x01;
                     34:        static const uint32 CMD_WRITE_BUFFER    = 0x02;
                     35:        static const uint32 CMD_READ_BUFFER             = 0x03;
                     36: 
                     37:  public:
                     38:        GFTTYDevice();
                     39:        ~GFTTYDevice() override;
                     40: 
                     41:        bool Create() override;
                     42:        void SetLogLevel(int loglevel_) override;
                     43:        bool Init() override;
                     44:        void ResetHard(bool poweron) override;
                     45: 
                     46:        busdata Read32(uint32 addr) override;
                     47:        busdata Write32(uint32 addr, uint32 data) override;
                     48:        busdata Peek8(uint32 addr) override;
                     49: 
                     50:  private:
                     51:        void Command(uint32);
                     52:        void ChangeInterrupt();
                     53: 
                     54:        // シリアルから1バイト受信のメッセージとイベントコールバック
                     55:        void HostRxCallback();
                     56:        void RxMessage(MessageID, uint32);
                     57: 
                     58:        // 受信キュー
                     59:        std::deque<uint8> rxq {};
                     60: 
                     61:        uint32 dma_ptr {};
                     62:        uint32 dma_len {};
                     63:        bool intr_enable {};
                     64: 
                     65:        std::unique_ptr<HostCOMDevice> hostcom /*{}*/;
                     66: 
                     67:        GFPICDevice *gfpic {};
                     68:        MainbusDevice *mainbus {};
                     69: };
                     70: 
                     71: static inline GFTTYDevice *GetGFTTYDevice() {
                     72:        return Object::GetObject<GFTTYDevice>(OBJ_GFTTY);
                     73: }

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