pl111.hh

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/*
 * Copyright (c) 2010-2012, 2015 ARM Limited
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 *
 * The license below extends only to copyright in the software and shall
 * not be construed as granting a license to any other intellectual
 * property including but not limited to intellectual property relating
 * to a hardware implementation of the functionality of the software
 * licensed hereunder.  You may use the software subject to the license
 * terms below provided that you ensure that this notice is replicated
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 * modified or unmodified, in source code or in binary form.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
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 * redistributions in binary form must reproduce the above copyright
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 * neither the name of the copyright holders nor the names of its
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 * this software without specific prior written permission.
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#ifndef __DEV_ARM_PL111_HH__
#define __DEV_ARM_PL111_HH__
 
#include <fstream>
#include <memory>
 
#include "base/bmpwriter.hh"
#include "base/framebuffer.hh"
#include "base/output.hh"
#include "dev/arm/amba_device.hh"
#include "sim/serialize.hh"
 
namespace gem5
{
 
class VncInput;
 
struct Pl111Params;
 
class Pl111: public AmbaDmaDevice
{
  protected:
    static const uint64_t AMBA_ID       = 0xb105f00d00141111ULL;
    static const int LcdTiming0       = 0x000;
    static const int LcdTiming1       = 0x004;
    static const int LcdTiming2       = 0x008;
    static const int LcdTiming3       = 0x00C;
    static const int LcdUpBase        = 0x010;
    static const int LcdLpBase        = 0x014;
    static const int LcdControl       = 0x018;
    static const int LcdImsc          = 0x01C;
    static const int LcdRis           = 0x020;
    static const int LcdMis           = 0x024;
    static const int LcdIcr           = 0x028;
    static const int LcdUpCurr        = 0x02C;
    static const int LcdLpCurr        = 0x030;
    static const int LcdPalette       = 0x200;
    static const int CrsrImage        = 0x800;
    static const int ClcdCrsrCtrl     = 0xC00;
    static const int ClcdCrsrConfig   = 0xC04;
    static const int ClcdCrsrPalette0 = 0xC08;
    static const int ClcdCrsrPalette1 = 0xC0C;
    static const int ClcdCrsrXY       = 0xC10;
    static const int ClcdCrsrClip     = 0xC14;
    static const int ClcdCrsrImsc     = 0xC20;
    static const int ClcdCrsrIcr      = 0xC24;
    static const int ClcdCrsrRis      = 0xC28;
    static const int ClcdCrsrMis      = 0xC2C;
 
    static const int LcdPaletteSize   = 128;
    static const int CrsrImageSize    = 256;
 
    static const int LcdMaxWidth      = 1024; // pixels per line
    static const int LcdMaxHeight     = 768;  // lines per panel
 
    static const int dmaSize            = 8;    // 64 bits
    static const int maxOutstandingDma  = 16;   // 16 deep FIFO of 64 bits
 
    static const int buffer_size = LcdMaxWidth * LcdMaxHeight * sizeof(uint32_t);
 
    enum LcdMode
    {
        bpp1 = 0,
        bpp2,
        bpp4,
        bpp8,
        bpp16,
        bpp24,
        bpp16m565,
        bpp12
    };
 
    BitUnion8(InterruptReg)
        Bitfield<1> underflow;
        Bitfield<2> baseaddr;
        Bitfield<3> vcomp;
        Bitfield<4> ahbmaster;
    EndBitUnion(InterruptReg)
 
    BitUnion32(TimingReg0)
        Bitfield<7,2> ppl;
        Bitfield<15,8> hsw;
        Bitfield<23,16> hfp;
        Bitfield<31,24> hbp;
    EndBitUnion(TimingReg0)
 
    BitUnion32(TimingReg1)
        Bitfield<9,0> lpp;
        Bitfield<15,10> vsw;
        Bitfield<23,16> vfp;
        Bitfield<31,24> vbp;
    EndBitUnion(TimingReg1)
 
    BitUnion32(TimingReg2)
        Bitfield<4,0> pcdlo;
        Bitfield<5> clksel;
        Bitfield<10,6> acb;
        Bitfield<11> avs;
        Bitfield<12> ihs;
        Bitfield<13> ipc;
        Bitfield<14> ioe;
        Bitfield<25,16> cpl;
        Bitfield<26> bcd;
        Bitfield<31,27> pcdhi;
    EndBitUnion(TimingReg2)
 
    BitUnion32(TimingReg3)
        Bitfield<6,0> led;
        Bitfield<16> lee;
    EndBitUnion(TimingReg3)
 
    BitUnion32(ControlReg)
        Bitfield<0> lcden;
        Bitfield<3,1> lcdbpp;
        Bitfield<4> lcdbw;
        Bitfield<5> lcdtft;
        Bitfield<6> lcdmono8;
        Bitfield<7> lcddual;
        Bitfield<8> bgr;
        Bitfield<9> bebo;
        Bitfield<10> bepo;
        Bitfield<11> lcdpwr;
        Bitfield<13,12> lcdvcomp;
        Bitfield<16> watermark;
    EndBitUnion(ControlReg)

    class DmaDoneEvent : public Event
    {
      private:
        Pl111 &obj;
 
      public:
        DmaDoneEvent(Pl111 *_obj)
            : Event(), obj(*_obj) {}
 
        void process() {
            obj.dmaDoneEventFree.push_back(this);
            obj.dmaDone();
        }
 
        const std::string name() const {
            return obj.name() + ".DmaDoneEvent";
        }
    };

    TimingReg0 lcdTiming0;

    TimingReg1 lcdTiming1;

    TimingReg2 lcdTiming2;

    TimingReg3 lcdTiming3;

    uint32_t lcdUpbase;

    uint32_t lcdLpbase;

    ControlReg lcdControl;

    InterruptReg lcdImsc;

    InterruptReg lcdRis;

    InterruptReg lcdMis;

    uint32_t lcdPalette[LcdPaletteSize];

    uint32_t cursorImage[CrsrImageSize];

    uint32_t clcdCrsrCtrl;

    uint32_t clcdCrsrConfig;

    uint32_t clcdCrsrPalette0;
    uint32_t clcdCrsrPalette1;

    uint32_t clcdCrsrXY;

    uint32_t clcdCrsrClip;

    InterruptReg clcdCrsrImsc;

    InterruptReg clcdCrsrIcr;

    InterruptReg clcdCrsrRis;

    InterruptReg clcdCrsrMis;

    Tick pixelClock;
 
    PixelConverter converter;
    FrameBuffer fb;

    VncInput *vnc;

    BmpWriter bmp;

    OutputStream *pic;

    uint16_t width;

    uint16_t height;

    uint8_t bytesPerPixel;

    uint8_t *dmaBuffer;

    Tick startTime;

    Addr startAddr;

    Addr maxAddr;

    Addr curAddr;

    uint32_t waterMark;

    uint32_t dmaPendingNum;
 
    PixelConverter pixelConverter() const;

    void updateVideoParams();

    void readFramebuffer();

    void generateReadEvent();

    void generateInterrupt();

    void fillFifo();

    void startDma();

    void dmaDone();

    EventFunctionWrapper readEvent;

    EventFunctionWrapper fillFifoEvent;

    std::vector<DmaDoneEvent> dmaDoneEventAll;

    std::vector<DmaDoneEvent *> dmaDoneEventFree;

    EventFunctionWrapper intEvent;
 
    bool enableCapture;
 
  public:
    using Params = Pl111Params;
    Pl111(const Params &p);
    ~Pl111();
 
    Tick read(PacketPtr pkt) override;
    Tick write(PacketPtr pkt) override;
 
    void serialize(CheckpointOut &cp) const override;
    void unserialize(CheckpointIn &cp) override;

    AddrRangeList getAddrRanges() const override;
};
 
} // namespace gem5
 
#endif