src/dev/arm/pl111.cc - amd/gem5 - Git at Google

 /*
  * Copyright (c) 2010-2012, 2015 ARM Limited
  * All rights reserved
  *
  * 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
  * unmodified and in its entirety in all distributions of the software,
  * 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
  * notice, this list of conditions and the following disclaimer;
  * redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution;
  * neither the name of the copyright holders nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Authors: William Wang
  *          Ali Saidi
  */

 #include "dev/arm/pl111.hh"

 #include "base/output.hh"
 #include "base/trace.hh"
 #include "base/vnc/vncinput.hh"
 #include "debug/PL111.hh"
 #include "debug/Uart.hh"
 #include "dev/arm/amba_device.hh"
 #include "dev/arm/base_gic.hh"
 #include "mem/packet.hh"
 #include "mem/packet_access.hh"
 #include "sim/system.hh"

 // clang complains about std::set being overloaded with Packet::set if
 // we open up the entire namespace std
 using std::vector;

 // initialize clcd registers
 Pl111::Pl111(const Params *p)
     : AmbaDmaDevice(p), lcdTiming0(0), lcdTiming1(0), lcdTiming2(0),
       lcdTiming3(0), lcdUpbase(0), lcdLpbase(0), lcdControl(0), lcdImsc(0),
       lcdRis(0), lcdMis(0),
       clcdCrsrCtrl(0), clcdCrsrConfig(0), clcdCrsrPalette0(0),
       clcdCrsrPalette1(0), clcdCrsrXY(0), clcdCrsrClip(0), clcdCrsrImsc(0),
       clcdCrsrIcr(0), clcdCrsrRis(0), clcdCrsrMis(0),
       pixelClock(p->pixel_clock),
       converter(PixelConverter::rgba8888_le), fb(LcdMaxWidth, LcdMaxHeight),
       vnc(p->vnc), bmp(&fb), pic(NULL),
       width(LcdMaxWidth), height(LcdMaxHeight),
       bytesPerPixel(4), startTime(0), startAddr(0), maxAddr(0), curAddr(0),
       waterMark(0), dmaPendingNum(0),
       readEvent([this]{ readFramebuffer(); }, name()),
       fillFifoEvent([this]{ fillFifo(); }, name()),
       dmaDoneEventAll(maxOutstandingDma, this),
       dmaDoneEventFree(maxOutstandingDma),
       intEvent([this]{ generateInterrupt(); }, name()),
       enableCapture(p->enable_capture)
 {
     pioSize = 0xFFFF;

     dmaBuffer = new uint8_t[buffer_size];

     memset(lcdPalette, 0, sizeof(lcdPalette));
     memset(cursorImage, 0, sizeof(cursorImage));
     memset(dmaBuffer, 0, buffer_size);

     for (int i = 0; i < maxOutstandingDma; ++i)
         dmaDoneEventFree[i] = &dmaDoneEventAll[i];

     if (vnc)
         vnc->setFrameBuffer(&fb);
 }

 Pl111::~Pl111()
 {
     delete[] dmaBuffer;
 }

 // read registers and frame buffer
 Tick
 Pl111::read(PacketPtr pkt)
 {
     // use a temporary data since the LCD registers are read/written with
     // different size operations

     uint32_t data = 0;

     assert(pkt->getAddr() >= pioAddr &&
            pkt->getAddr() < pioAddr + pioSize);

     Addr daddr = pkt->getAddr() - pioAddr;

     DPRINTF(PL111, " read register %#x size=%d\n", daddr, pkt->getSize());

     switch (daddr) {
       case LcdTiming0:
         data = lcdTiming0;
         break;
       case LcdTiming1:
         data = lcdTiming1;
         break;
       case LcdTiming2:
         data = lcdTiming2;
         break;
       case LcdTiming3:
         data = lcdTiming3;
         break;
       case LcdUpBase:
         data = lcdUpbase;
         break;
       case LcdLpBase:
         data = lcdLpbase;
         break;
       case LcdControl:
         data = lcdControl;
         break;
       case LcdImsc:
         data = lcdImsc;
         break;
       case LcdRis:
         data = lcdRis;
         break;
       case LcdMis:
         data = lcdMis;
         break;
       case LcdIcr:
         panic("LCD register at offset %#x is Write-Only\n", daddr);
         break;
       case LcdUpCurr:
         data = curAddr;
         break;
       case LcdLpCurr:
         data = curAddr;
         break;
       case ClcdCrsrCtrl:
         data = clcdCrsrCtrl;
         break;
       case ClcdCrsrConfig:
         data = clcdCrsrConfig;
         break;
       case ClcdCrsrPalette0:
         data = clcdCrsrPalette0;
         break;
       case ClcdCrsrPalette1:
         data = clcdCrsrPalette1;
         break;
       case ClcdCrsrXY:
         data = clcdCrsrXY;
         break;
       case ClcdCrsrClip:
         data = clcdCrsrClip;
         break;
       case ClcdCrsrImsc:
         data = clcdCrsrImsc;
         break;
       case ClcdCrsrIcr:
         panic("CLCD register at offset %#x is Write-Only\n", daddr);
         break;
       case ClcdCrsrRis:
         data = clcdCrsrRis;
         break;
       case ClcdCrsrMis:
         data = clcdCrsrMis;
         break;
       default:
         if (readId(pkt, AMBA_ID, pioAddr)) {
             // Hack for variable size accesses
             data = pkt->get<uint32_t>();
             break;
         } else if (daddr >= CrsrImage && daddr <= 0xBFC) {
             // CURSOR IMAGE
             int index;
             index = (daddr - CrsrImage) >> 2;
             data= cursorImage[index];
             break;
         } else if (daddr >= LcdPalette && daddr <= 0x3FC) {
             // LCD Palette
             int index;
             index = (daddr - LcdPalette) >> 2;
             data = lcdPalette[index];
             break;
         } else {
             panic("Tried to read CLCD register at offset %#x that "
                        "doesn't exist\n", daddr);
             break;
         }
     }

     switch(pkt->getSize()) {
       case 1:
         pkt->set<uint8_t>(data);
         break;
       case 2:
         pkt->set<uint16_t>(data);
         break;
       case 4:
         pkt->set<uint32_t>(data);
         break;
       default:
         panic("CLCD controller read size too big?\n");
         break;
     }

     pkt->makeAtomicResponse();
     return pioDelay;
 }

 // write registers and frame buffer
 Tick
 Pl111::write(PacketPtr pkt)
 {
     // use a temporary data since the LCD registers are read/written with
     // different size operations
     //
     uint32_t data = 0;

     switch(pkt->getSize()) {
       case 1:
         data = pkt->get<uint8_t>();
         break;
       case 2:
         data = pkt->get<uint16_t>();
         break;
       case 4:
         data = pkt->get<uint32_t>();
         break;
       default:
         panic("PL111 CLCD controller write size too big?\n");
         break;
     }

     assert(pkt->getAddr() >= pioAddr &&
            pkt->getAddr() < pioAddr + pioSize);

     Addr daddr = pkt->getAddr() - pioAddr;

     DPRINTF(PL111, " write register %#x value %#x size=%d\n", daddr,
             pkt->get<uint8_t>(), pkt->getSize());

     switch (daddr) {
       case LcdTiming0:
         lcdTiming0 = data;
         // width = 16 * (PPL+1)
         width = (lcdTiming0.ppl + 1) << 4;
         break;
       case LcdTiming1:
         lcdTiming1 = data;
         // height = LPP + 1
         height = (lcdTiming1.lpp) + 1;
         break;
       case LcdTiming2:
         lcdTiming2 = data;
         break;
       case LcdTiming3:
         lcdTiming3 = data;
         break;
       case LcdUpBase:
         lcdUpbase = data;
         DPRINTF(PL111, "####### Upper panel base set to: %#x #######\n", lcdUpbase);
         break;
       case LcdLpBase:
         warn_once("LCD dual screen mode not supported\n");
         lcdLpbase = data;
         DPRINTF(PL111, "###### Lower panel base set to: %#x #######\n", lcdLpbase);
         break;
       case LcdControl:
         int old_lcdpwr;
         old_lcdpwr = lcdControl.lcdpwr;
         lcdControl = data;

         DPRINTF(PL111, "LCD power is:%d\n", lcdControl.lcdpwr);

         // LCD power enable
         if (lcdControl.lcdpwr && !old_lcdpwr) {
             updateVideoParams();
             DPRINTF(PL111, " lcd size: height %d width %d\n", height, width);
             waterMark = lcdControl.watermark ? 8 : 4;
             startDma();
         }
         break;
       case LcdImsc:
         lcdImsc = data;
         if (lcdImsc.vcomp)
             panic("Interrupting on vcomp not supported\n");

         lcdMis = lcdImsc & lcdRis;

         if (!lcdMis)
             gic->clearInt(intNum);

          break;
       case LcdRis:
         panic("LCD register at offset %#x is Read-Only\n", daddr);
         break;
       case LcdMis:
         panic("LCD register at offset %#x is Read-Only\n", daddr);
         break;
       case LcdIcr:
         lcdRis = lcdRis & ~data;
         lcdMis = lcdImsc & lcdRis;

         if (!lcdMis)
             gic->clearInt(intNum);

         break;
       case LcdUpCurr:
         panic("LCD register at offset %#x is Read-Only\n", daddr);
         break;
       case LcdLpCurr:
         panic("LCD register at offset %#x is Read-Only\n", daddr);
         break;
       case ClcdCrsrCtrl:
         clcdCrsrCtrl = data;
         break;
       case ClcdCrsrConfig:
         clcdCrsrConfig = data;
         break;
       case ClcdCrsrPalette0:
         clcdCrsrPalette0 = data;
         break;
       case ClcdCrsrPalette1:
         clcdCrsrPalette1 = data;
         break;
       case ClcdCrsrXY:
         clcdCrsrXY = data;
         break;
       case ClcdCrsrClip:
         clcdCrsrClip = data;
         break;
       case ClcdCrsrImsc:
         clcdCrsrImsc = data;
         break;
       case ClcdCrsrIcr:
         clcdCrsrIcr = data;
         break;
       case ClcdCrsrRis:
         panic("CLCD register at offset %#x is Read-Only\n", daddr);
         break;
       case ClcdCrsrMis:
         panic("CLCD register at offset %#x is Read-Only\n", daddr);
         break;
       default:
         if (daddr >= CrsrImage && daddr <= 0xBFC) {
             // CURSOR IMAGE
             int index;
             index = (daddr - CrsrImage) >> 2;
             cursorImage[index] = data;
             break;
         } else if (daddr >= LcdPalette && daddr <= 0x3FC) {
             // LCD Palette
             int index;
             index = (daddr - LcdPalette) >> 2;
             lcdPalette[index] = data;
             break;
         } else {
             panic("Tried to write PL111 register at offset %#x that "
                        "doesn't exist\n", daddr);
             break;
         }
     }

     pkt->makeAtomicResponse();
     return pioDelay;
 }

 PixelConverter
 Pl111::pixelConverter() const
 {
     unsigned rw, gw, bw;
     unsigned offsets[3];

     switch (lcdControl.lcdbpp) {
       case bpp24:
         rw = gw = bw = 8;
         offsets[0] = 0;
         offsets[1] = 8;
         offsets[2] = 16;
         break;

       case bpp16m565:
         rw = 5;
         gw = 6;
         bw = 5;
         offsets[0] = 0;
         offsets[1] = 5;
         offsets[2] = 11;
         break;

       default:
         panic("Unimplemented video mode\n");
     }

     if (lcdControl.bgr) {
         return PixelConverter(
             bytesPerPixel,
             offsets[2], offsets[1], offsets[0],
             rw, gw, bw,
             LittleEndianByteOrder);
     } else {
         return PixelConverter(
             bytesPerPixel,
             offsets[0], offsets[1], offsets[2],
             rw, gw, bw,
             LittleEndianByteOrder);
     }
 }

 void
 Pl111::updateVideoParams()
 {
     if (lcdControl.lcdbpp == bpp24) {
         bytesPerPixel = 4;
     } else if (lcdControl.lcdbpp == bpp16m565) {
         bytesPerPixel = 2;
     }

     fb.resize(width, height);
     converter = pixelConverter();

     // Workaround configuration bugs where multiple display
     // controllers are attached to the same VNC server by reattaching
     // enabled devices. This isn't ideal, but works as long as only
     // one display controller is active at a time.
     if (lcdControl.lcdpwr && vnc)
         vnc->setFrameBuffer(&fb);
 }

 void
 Pl111::startDma()
 {
     if (dmaPendingNum != 0 || readEvent.scheduled())
         return;
     readFramebuffer();
 }

 void
 Pl111::readFramebuffer()
 {
     // initialization for dma read from frame buffer to dma buffer
     uint32_t length = height * width;
     if (startAddr != lcdUpbase)
         startAddr = lcdUpbase;

     // Updating base address, interrupt if we're supposed to
     lcdRis.baseaddr = 1;
     if (!intEvent.scheduled())
         schedule(intEvent, clockEdge());

     curAddr = 0;
     startTime = curTick();

     maxAddr = static_cast<Addr>(length * bytesPerPixel);

     DPRINTF(PL111, " lcd frame buffer size of %d bytes \n", maxAddr);

     fillFifo();
 }

 void
 Pl111::fillFifo()
 {
     while ((dmaPendingNum < maxOutstandingDma) && (maxAddr >= curAddr + dmaSize )) {
         // concurrent dma reads need different dma done events
         // due to assertion in scheduling state
         ++dmaPendingNum;

         assert(!dmaDoneEventFree.empty());
         DmaDoneEvent *event(dmaDoneEventFree.back());
         dmaDoneEventFree.pop_back();
         assert(!event->scheduled());

         // We use a uncachable request here because the requests from the CPU
         // will be uncacheable as well. If we have uncacheable and cacheable
         // requests in the memory system for the same address it won't be
         // pleased
         dmaPort.dmaAction(MemCmd::ReadReq, curAddr + startAddr, dmaSize,
                           event, curAddr + dmaBuffer,
                           0, Request::UNCACHEABLE);
         curAddr += dmaSize;
     }
 }

 void
 Pl111::dmaDone()
 {
     DPRINTF(PL111, "DMA Done\n");

     Tick maxFrameTime = lcdTiming2.cpl * height * pixelClock;

     --dmaPendingNum;

     if (maxAddr == curAddr && !dmaPendingNum) {
         if ((curTick() - startTime) > maxFrameTime) {
             warn("CLCD controller buffer underrun, took %d ticks when should"
                  " have taken %d\n", curTick() - startTime, maxFrameTime);
             lcdRis.underflow = 1;
             if (!intEvent.scheduled())
                 schedule(intEvent, clockEdge());
         }

         assert(!readEvent.scheduled());
         fb.copyIn(dmaBuffer, converter);
         if (vnc)
             vnc->setDirty();

         if (enableCapture) {
             DPRINTF(PL111, "-- write out frame buffer into bmp\n");

             if (!pic)
                 pic = simout.create(csprintf("%s.framebuffer.bmp", sys->name()),
                                     true);

             assert(pic);
             pic->stream()->seekp(0);
             bmp.write(*pic->stream());
         }

         // schedule the next read based on when the last frame started
         // and the desired fps (i.e. maxFrameTime), we turn the
         // argument into a relative number of cycles in the future
         if (lcdControl.lcden)
             schedule(readEvent, clockEdge(ticksToCycles(startTime -
                                                         curTick() +
                                                         maxFrameTime)));
     }

     if (dmaPendingNum > (maxOutstandingDma - waterMark))
         return;

     if (!fillFifoEvent.scheduled())
         schedule(fillFifoEvent, clockEdge());
 }

 void
 Pl111::serialize(CheckpointOut &cp) const
 {
     DPRINTF(PL111, "Serializing ARM PL111\n");

     uint32_t lcdTiming0_serial = lcdTiming0;
     SERIALIZE_SCALAR(lcdTiming0_serial);

     uint32_t lcdTiming1_serial = lcdTiming1;
     SERIALIZE_SCALAR(lcdTiming1_serial);

     uint32_t lcdTiming2_serial = lcdTiming2;
     SERIALIZE_SCALAR(lcdTiming2_serial);

     uint32_t lcdTiming3_serial = lcdTiming3;
     SERIALIZE_SCALAR(lcdTiming3_serial);

     SERIALIZE_SCALAR(lcdUpbase);
     SERIALIZE_SCALAR(lcdLpbase);

     uint32_t lcdControl_serial = lcdControl;
     SERIALIZE_SCALAR(lcdControl_serial);

     uint8_t lcdImsc_serial = lcdImsc;
     SERIALIZE_SCALAR(lcdImsc_serial);

     uint8_t lcdRis_serial = lcdRis;
     SERIALIZE_SCALAR(lcdRis_serial);

     uint8_t lcdMis_serial = lcdMis;
     SERIALIZE_SCALAR(lcdMis_serial);

     SERIALIZE_ARRAY(lcdPalette, LcdPaletteSize);
     SERIALIZE_ARRAY(cursorImage, CrsrImageSize);

     SERIALIZE_SCALAR(clcdCrsrCtrl);
     SERIALIZE_SCALAR(clcdCrsrConfig);
     SERIALIZE_SCALAR(clcdCrsrPalette0);
     SERIALIZE_SCALAR(clcdCrsrPalette1);
     SERIALIZE_SCALAR(clcdCrsrXY);
     SERIALIZE_SCALAR(clcdCrsrClip);

     uint8_t clcdCrsrImsc_serial = clcdCrsrImsc;
     SERIALIZE_SCALAR(clcdCrsrImsc_serial);

     uint8_t clcdCrsrIcr_serial = clcdCrsrIcr;
     SERIALIZE_SCALAR(clcdCrsrIcr_serial);

     uint8_t clcdCrsrRis_serial = clcdCrsrRis;
     SERIALIZE_SCALAR(clcdCrsrRis_serial);

     uint8_t clcdCrsrMis_serial = clcdCrsrMis;
     SERIALIZE_SCALAR(clcdCrsrMis_serial);

     SERIALIZE_SCALAR(height);
     SERIALIZE_SCALAR(width);
     SERIALIZE_SCALAR(bytesPerPixel);

     SERIALIZE_ARRAY(dmaBuffer, buffer_size);
     SERIALIZE_SCALAR(startTime);
     SERIALIZE_SCALAR(startAddr);
     SERIALIZE_SCALAR(maxAddr);
     SERIALIZE_SCALAR(curAddr);
     SERIALIZE_SCALAR(waterMark);
     SERIALIZE_SCALAR(dmaPendingNum);

     Tick int_event_time = 0;
     Tick read_event_time = 0;
     Tick fill_fifo_event_time = 0;

     if (readEvent.scheduled())
         read_event_time = readEvent.when();
     if (fillFifoEvent.scheduled())
         fill_fifo_event_time = fillFifoEvent.when();
     if (intEvent.scheduled())
         int_event_time = intEvent.when();

     SERIALIZE_SCALAR(read_event_time);
     SERIALIZE_SCALAR(fill_fifo_event_time);
     SERIALIZE_SCALAR(int_event_time);

     vector<Tick> dma_done_event_tick;
     dma_done_event_tick.resize(maxOutstandingDma);
     for (int x = 0; x < maxOutstandingDma; x++) {
         dma_done_event_tick[x] = dmaDoneEventAll[x].scheduled() ?
             dmaDoneEventAll[x].when() : 0;
     }
     SERIALIZE_CONTAINER(dma_done_event_tick);
 }

 void
 Pl111::unserialize(CheckpointIn &cp)
 {
     DPRINTF(PL111, "Unserializing ARM PL111\n");

     uint32_t lcdTiming0_serial;
     UNSERIALIZE_SCALAR(lcdTiming0_serial);
     lcdTiming0 = lcdTiming0_serial;

     uint32_t lcdTiming1_serial;
     UNSERIALIZE_SCALAR(lcdTiming1_serial);
     lcdTiming1 = lcdTiming1_serial;

     uint32_t lcdTiming2_serial;
     UNSERIALIZE_SCALAR(lcdTiming2_serial);
     lcdTiming2 = lcdTiming2_serial;

     uint32_t lcdTiming3_serial;
     UNSERIALIZE_SCALAR(lcdTiming3_serial);
     lcdTiming3 = lcdTiming3_serial;

     UNSERIALIZE_SCALAR(lcdUpbase);
     UNSERIALIZE_SCALAR(lcdLpbase);

     uint32_t lcdControl_serial;
     UNSERIALIZE_SCALAR(lcdControl_serial);
     lcdControl = lcdControl_serial;

     uint8_t lcdImsc_serial;
     UNSERIALIZE_SCALAR(lcdImsc_serial);
     lcdImsc = lcdImsc_serial;

     uint8_t lcdRis_serial;
     UNSERIALIZE_SCALAR(lcdRis_serial);
     lcdRis = lcdRis_serial;

     uint8_t lcdMis_serial;
     UNSERIALIZE_SCALAR(lcdMis_serial);
     lcdMis = lcdMis_serial;

     UNSERIALIZE_ARRAY(lcdPalette, LcdPaletteSize);
     UNSERIALIZE_ARRAY(cursorImage, CrsrImageSize);

     UNSERIALIZE_SCALAR(clcdCrsrCtrl);
     UNSERIALIZE_SCALAR(clcdCrsrConfig);
     UNSERIALIZE_SCALAR(clcdCrsrPalette0);
     UNSERIALIZE_SCALAR(clcdCrsrPalette1);
     UNSERIALIZE_SCALAR(clcdCrsrXY);
     UNSERIALIZE_SCALAR(clcdCrsrClip);

     uint8_t clcdCrsrImsc_serial;
     UNSERIALIZE_SCALAR(clcdCrsrImsc_serial);
     clcdCrsrImsc = clcdCrsrImsc_serial;

     uint8_t clcdCrsrIcr_serial;
     UNSERIALIZE_SCALAR(clcdCrsrIcr_serial);
     clcdCrsrIcr = clcdCrsrIcr_serial;

     uint8_t clcdCrsrRis_serial;
     UNSERIALIZE_SCALAR(clcdCrsrRis_serial);
     clcdCrsrRis = clcdCrsrRis_serial;

     uint8_t clcdCrsrMis_serial;
     UNSERIALIZE_SCALAR(clcdCrsrMis_serial);
     clcdCrsrMis = clcdCrsrMis_serial;

     UNSERIALIZE_SCALAR(height);
     UNSERIALIZE_SCALAR(width);
     UNSERIALIZE_SCALAR(bytesPerPixel);

     UNSERIALIZE_ARRAY(dmaBuffer, buffer_size);
     UNSERIALIZE_SCALAR(startTime);
     UNSERIALIZE_SCALAR(startAddr);
     UNSERIALIZE_SCALAR(maxAddr);
     UNSERIALIZE_SCALAR(curAddr);
     UNSERIALIZE_SCALAR(waterMark);
     UNSERIALIZE_SCALAR(dmaPendingNum);

     Tick int_event_time = 0;
     Tick read_event_time = 0;
     Tick fill_fifo_event_time = 0;

     UNSERIALIZE_SCALAR(read_event_time);
     UNSERIALIZE_SCALAR(fill_fifo_event_time);
     UNSERIALIZE_SCALAR(int_event_time);

     if (int_event_time)
         schedule(intEvent, int_event_time);
     if (read_event_time)
         schedule(readEvent, read_event_time);
     if (fill_fifo_event_time)
         schedule(fillFifoEvent, fill_fifo_event_time);

     vector<Tick> dma_done_event_tick;
     dma_done_event_tick.resize(maxOutstandingDma);
     UNSERIALIZE_CONTAINER(dma_done_event_tick);
     dmaDoneEventFree.clear();
     for (int x = 0; x < maxOutstandingDma; x++) {
         if (dma_done_event_tick[x])
             schedule(dmaDoneEventAll[x], dma_done_event_tick[x]);
         else
             dmaDoneEventFree.push_back(&dmaDoneEventAll[x]);
     }
     assert(maxOutstandingDma - dmaDoneEventFree.size() == dmaPendingNum);

     if (lcdControl.lcdpwr) {
         updateVideoParams();
         fb.copyIn(dmaBuffer, converter);
         if (vnc)
             vnc->setDirty();
     }
 }

 void
 Pl111::generateInterrupt()
 {
     DPRINTF(PL111, "Generate Interrupt: lcdImsc=0x%x lcdRis=0x%x lcdMis=0x%x\n",
             (uint32_t)lcdImsc, (uint32_t)lcdRis, (uint32_t)lcdMis);
     lcdMis = lcdImsc & lcdRis;

     if (lcdMis.underflow || lcdMis.baseaddr || lcdMis.vcomp || lcdMis.ahbmaster) {
         gic->sendInt(intNum);
         DPRINTF(PL111, " -- Generated\n");
     }
 }

 AddrRangeList
 Pl111::getAddrRanges() const
 {
     AddrRangeList ranges;
     ranges.push_back(RangeSize(pioAddr, pioSize));
     return ranges;
 }

 Pl111 *
 Pl111Params::create()
 {
     return new Pl111(this);
 }
	/*
	* Copyright (c) 2010-2012, 2015 ARM Limited
	* All rights reserved
	*
	* 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
	* unmodified and in its entirety in all distributions of the software,
	* 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
	* notice, this list of conditions and the following disclaimer;
	* redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution;
	* neither the name of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*
	* Authors: William Wang
	* Ali Saidi
	*/

	#include "dev/arm/pl111.hh"

	#include "base/output.hh"
	#include "base/trace.hh"
	#include "base/vnc/vncinput.hh"
	#include "debug/PL111.hh"
	#include "debug/Uart.hh"
	#include "dev/arm/amba_device.hh"
	#include "dev/arm/base_gic.hh"
	#include "mem/packet.hh"
	#include "mem/packet_access.hh"
	#include "sim/system.hh"

	// clang complains about std::set being overloaded with Packet::set if
	// we open up the entire namespace std
	using std::vector;

	// initialize clcd registers
	Pl111::Pl111(const Params *p)
	: AmbaDmaDevice(p), lcdTiming0(0), lcdTiming1(0), lcdTiming2(0),
	lcdTiming3(0), lcdUpbase(0), lcdLpbase(0), lcdControl(0), lcdImsc(0),
	lcdRis(0), lcdMis(0),
	clcdCrsrCtrl(0), clcdCrsrConfig(0), clcdCrsrPalette0(0),
	clcdCrsrPalette1(0), clcdCrsrXY(0), clcdCrsrClip(0), clcdCrsrImsc(0),
	clcdCrsrIcr(0), clcdCrsrRis(0), clcdCrsrMis(0),
	pixelClock(p->pixel_clock),
	converter(PixelConverter::rgba8888_le), fb(LcdMaxWidth, LcdMaxHeight),
	vnc(p->vnc), bmp(&fb), pic(NULL),
	width(LcdMaxWidth), height(LcdMaxHeight),
	bytesPerPixel(4), startTime(0), startAddr(0), maxAddr(0), curAddr(0),
	waterMark(0), dmaPendingNum(0),
	readEvent([this]{ readFramebuffer(); }, name()),
	fillFifoEvent([this]{ fillFifo(); }, name()),
	dmaDoneEventAll(maxOutstandingDma, this),
	dmaDoneEventFree(maxOutstandingDma),
	intEvent([this]{ generateInterrupt(); }, name()),
	enableCapture(p->enable_capture)
	{
	pioSize = 0xFFFF;

	dmaBuffer = new uint8_t[buffer_size];

	memset(lcdPalette, 0, sizeof(lcdPalette));
	memset(cursorImage, 0, sizeof(cursorImage));
	memset(dmaBuffer, 0, buffer_size);

	for (int i = 0; i < maxOutstandingDma; ++i)
	dmaDoneEventFree[i] = &dmaDoneEventAll[i];

	if (vnc)
	vnc->setFrameBuffer(&fb);
	}

	Pl111::~Pl111()
	{
	delete[] dmaBuffer;
	}

	// read registers and frame buffer
	Tick
	Pl111::read(PacketPtr pkt)
	{
	// use a temporary data since the LCD registers are read/written with
	// different size operations

	uint32_t data = 0;

	assert(pkt->getAddr() >= pioAddr &&
	pkt->getAddr() < pioAddr + pioSize);

	Addr daddr = pkt->getAddr() - pioAddr;

	DPRINTF(PL111, " read register %#x size=%d\n", daddr, pkt->getSize());

	switch (daddr) {
	case LcdTiming0:
	data = lcdTiming0;
	break;
	case LcdTiming1:
	data = lcdTiming1;
	break;
	case LcdTiming2:
	data = lcdTiming2;
	break;
	case LcdTiming3:
	data = lcdTiming3;
	break;
	case LcdUpBase:
	data = lcdUpbase;
	break;
	case LcdLpBase:
	data = lcdLpbase;
	break;
	case LcdControl:
	data = lcdControl;
	break;
	case LcdImsc:
	data = lcdImsc;
	break;
	case LcdRis:
	data = lcdRis;
	break;
	case LcdMis:
	data = lcdMis;
	break;
	case LcdIcr:
	panic("LCD register at offset %#x is Write-Only\n", daddr);
	break;
	case LcdUpCurr:
	data = curAddr;
	break;
	case LcdLpCurr:
	data = curAddr;
	break;
	case ClcdCrsrCtrl:
	data = clcdCrsrCtrl;
	break;
	case ClcdCrsrConfig:
	data = clcdCrsrConfig;
	break;
	case ClcdCrsrPalette0:
	data = clcdCrsrPalette0;
	break;
	case ClcdCrsrPalette1:
	data = clcdCrsrPalette1;
	break;
	case ClcdCrsrXY:
	data = clcdCrsrXY;
	break;
	case ClcdCrsrClip:
	data = clcdCrsrClip;
	break;
	case ClcdCrsrImsc:
	data = clcdCrsrImsc;
	break;
	case ClcdCrsrIcr:
	panic("CLCD register at offset %#x is Write-Only\n", daddr);
	break;
	case ClcdCrsrRis:
	data = clcdCrsrRis;
	break;
	case ClcdCrsrMis:
	data = clcdCrsrMis;
	break;
	default:
	if (readId(pkt, AMBA_ID, pioAddr)) {
	// Hack for variable size accesses
	data = pkt->get<uint32_t>();
	break;
	} else if (daddr >= CrsrImage && daddr <= 0xBFC) {
	// CURSOR IMAGE
	int index;
	index = (daddr - CrsrImage) >> 2;
	data= cursorImage[index];
	break;
	} else if (daddr >= LcdPalette && daddr <= 0x3FC) {
	// LCD Palette
	int index;
	index = (daddr - LcdPalette) >> 2;
	data = lcdPalette[index];
	break;
	} else {
	panic("Tried to read CLCD register at offset %#x that "
	"doesn't exist\n", daddr);
	break;
	}
	}

	switch(pkt->getSize()) {
	case 1:
	pkt->set<uint8_t>(data);
	break;
	case 2:
	pkt->set<uint16_t>(data);
	break;
	case 4:
	pkt->set<uint32_t>(data);
	break;
	default:
	panic("CLCD controller read size too big?\n");
	break;
	}

	pkt->makeAtomicResponse();
	return pioDelay;
	}

	// write registers and frame buffer
	Tick
	Pl111::write(PacketPtr pkt)
	{
	// use a temporary data since the LCD registers are read/written with
	// different size operations
	//
	uint32_t data = 0;

	switch(pkt->getSize()) {
	case 1:
	data = pkt->get<uint8_t>();
	break;
	case 2:
	data = pkt->get<uint16_t>();
	break;
	case 4:
	data = pkt->get<uint32_t>();
	break;
	default:
	panic("PL111 CLCD controller write size too big?\n");
	break;
	}

	assert(pkt->getAddr() >= pioAddr &&
	pkt->getAddr() < pioAddr + pioSize);

	Addr daddr = pkt->getAddr() - pioAddr;

	DPRINTF(PL111, " write register %#x value %#x size=%d\n", daddr,
	pkt->get<uint8_t>(), pkt->getSize());

	switch (daddr) {
	case LcdTiming0:
	lcdTiming0 = data;
	// width = 16 * (PPL+1)
	width = (lcdTiming0.ppl + 1) << 4;
	break;
	case LcdTiming1:
	lcdTiming1 = data;
	// height = LPP + 1
	height = (lcdTiming1.lpp) + 1;
	break;
	case LcdTiming2:
	lcdTiming2 = data;
	break;
	case LcdTiming3:
	lcdTiming3 = data;
	break;
	case LcdUpBase:
	lcdUpbase = data;
	DPRINTF(PL111, "####### Upper panel base set to: %#x #######\n", lcdUpbase);
	break;
	case LcdLpBase:
	warn_once("LCD dual screen mode not supported\n");
	lcdLpbase = data;
	DPRINTF(PL111, "###### Lower panel base set to: %#x #######\n", lcdLpbase);
	break;
	case LcdControl:
	int old_lcdpwr;
	old_lcdpwr = lcdControl.lcdpwr;
	lcdControl = data;

	DPRINTF(PL111, "LCD power is:%d\n", lcdControl.lcdpwr);

	// LCD power enable
	if (lcdControl.lcdpwr && !old_lcdpwr) {
	updateVideoParams();
	DPRINTF(PL111, " lcd size: height %d width %d\n", height, width);
	waterMark = lcdControl.watermark ? 8 : 4;
	startDma();
	}
	break;
	case LcdImsc:
	lcdImsc = data;
	if (lcdImsc.vcomp)
	panic("Interrupting on vcomp not supported\n");

	lcdMis = lcdImsc & lcdRis;

	if (!lcdMis)
	gic->clearInt(intNum);

	break;
	case LcdRis:
	panic("LCD register at offset %#x is Read-Only\n", daddr);
	break;
	case LcdMis:
	panic("LCD register at offset %#x is Read-Only\n", daddr);
	break;
	case LcdIcr:
	lcdRis = lcdRis & ~data;
	lcdMis = lcdImsc & lcdRis;

	if (!lcdMis)
	gic->clearInt(intNum);

	break;
	case LcdUpCurr:
	panic("LCD register at offset %#x is Read-Only\n", daddr);
	break;
	case LcdLpCurr:
	panic("LCD register at offset %#x is Read-Only\n", daddr);
	break;
	case ClcdCrsrCtrl:
	clcdCrsrCtrl = data;
	break;
	case ClcdCrsrConfig:
	clcdCrsrConfig = data;
	break;
	case ClcdCrsrPalette0:
	clcdCrsrPalette0 = data;
	break;
	case ClcdCrsrPalette1:
	clcdCrsrPalette1 = data;
	break;
	case ClcdCrsrXY:
	clcdCrsrXY = data;
	break;
	case ClcdCrsrClip:
	clcdCrsrClip = data;
	break;
	case ClcdCrsrImsc:
	clcdCrsrImsc = data;
	break;
	case ClcdCrsrIcr:
	clcdCrsrIcr = data;
	break;
	case ClcdCrsrRis:
	panic("CLCD register at offset %#x is Read-Only\n", daddr);
	break;
	case ClcdCrsrMis:
	panic("CLCD register at offset %#x is Read-Only\n", daddr);
	break;
	default:
	if (daddr >= CrsrImage && daddr <= 0xBFC) {
	// CURSOR IMAGE
	int index;
	index = (daddr - CrsrImage) >> 2;
	cursorImage[index] = data;
	break;
	} else if (daddr >= LcdPalette && daddr <= 0x3FC) {
	// LCD Palette
	int index;
	index = (daddr - LcdPalette) >> 2;
	lcdPalette[index] = data;
	break;
	} else {
	panic("Tried to write PL111 register at offset %#x that "
	"doesn't exist\n", daddr);
	break;
	}
	}

	pkt->makeAtomicResponse();
	return pioDelay;
	}

	PixelConverter
	Pl111::pixelConverter() const
	{
	unsigned rw, gw, bw;
	unsigned offsets[3];

	switch (lcdControl.lcdbpp) {
	case bpp24:
	rw = gw = bw = 8;
	offsets[0] = 0;
	offsets[1] = 8;
	offsets[2] = 16;
	break;

	case bpp16m565:
	rw = 5;
	gw = 6;
	bw = 5;
	offsets[0] = 0;
	offsets[1] = 5;
	offsets[2] = 11;
	break;

	default:
	panic("Unimplemented video mode\n");
	}

	if (lcdControl.bgr) {
	return PixelConverter(
	bytesPerPixel,
	offsets[2], offsets[1], offsets[0],
	rw, gw, bw,
	LittleEndianByteOrder);
	} else {
	return PixelConverter(
	bytesPerPixel,
	offsets[0], offsets[1], offsets[2],
	rw, gw, bw,
	LittleEndianByteOrder);
	}
	}

	void
	Pl111::updateVideoParams()
	{
	if (lcdControl.lcdbpp == bpp24) {
	bytesPerPixel = 4;
	} else if (lcdControl.lcdbpp == bpp16m565) {
	bytesPerPixel = 2;
	}

	fb.resize(width, height);
	converter = pixelConverter();

	// Workaround configuration bugs where multiple display
	// controllers are attached to the same VNC server by reattaching
	// enabled devices. This isn't ideal, but works as long as only
	// one display controller is active at a time.
	if (lcdControl.lcdpwr && vnc)
	vnc->setFrameBuffer(&fb);
	}

	void
	Pl111::startDma()
	{
	if (dmaPendingNum != 0 \|\| readEvent.scheduled())
	return;
	readFramebuffer();
	}

	void
	Pl111::readFramebuffer()
	{
	// initialization for dma read from frame buffer to dma buffer
	uint32_t length = height * width;
	if (startAddr != lcdUpbase)
	startAddr = lcdUpbase;

	// Updating base address, interrupt if we're supposed to
	lcdRis.baseaddr = 1;
	if (!intEvent.scheduled())
	schedule(intEvent, clockEdge());

	curAddr = 0;
	startTime = curTick();

	maxAddr = static_cast<Addr>(length * bytesPerPixel);

	DPRINTF(PL111, " lcd frame buffer size of %d bytes \n", maxAddr);

	fillFifo();
	}

	void
	Pl111::fillFifo()
	{
	while ((dmaPendingNum < maxOutstandingDma) && (maxAddr >= curAddr + dmaSize )) {
	// concurrent dma reads need different dma done events
	// due to assertion in scheduling state
	++dmaPendingNum;

	assert(!dmaDoneEventFree.empty());
	DmaDoneEvent *event(dmaDoneEventFree.back());
	dmaDoneEventFree.pop_back();
	assert(!event->scheduled());

	// We use a uncachable request here because the requests from the CPU
	// will be uncacheable as well. If we have uncacheable and cacheable
	// requests in the memory system for the same address it won't be
	// pleased
	dmaPort.dmaAction(MemCmd::ReadReq, curAddr + startAddr, dmaSize,
	event, curAddr + dmaBuffer,
	0, Request::UNCACHEABLE);
	curAddr += dmaSize;
	}
	}

	void
	Pl111::dmaDone()
	{
	DPRINTF(PL111, "DMA Done\n");

	Tick maxFrameTime = lcdTiming2.cpl * height * pixelClock;

	--dmaPendingNum;

	if (maxAddr == curAddr && !dmaPendingNum) {
	if ((curTick() - startTime) > maxFrameTime) {
	warn("CLCD controller buffer underrun, took %d ticks when should"
	" have taken %d\n", curTick() - startTime, maxFrameTime);
	lcdRis.underflow = 1;
	if (!intEvent.scheduled())
	schedule(intEvent, clockEdge());
	}

	assert(!readEvent.scheduled());
	fb.copyIn(dmaBuffer, converter);
	if (vnc)
	vnc->setDirty();

	if (enableCapture) {
	DPRINTF(PL111, "-- write out frame buffer into bmp\n");

	if (!pic)
	pic = simout.create(csprintf("%s.framebuffer.bmp", sys->name()),
	true);

	assert(pic);
	pic->stream()->seekp(0);
	bmp.write(*pic->stream());
	}

	// schedule the next read based on when the last frame started
	// and the desired fps (i.e. maxFrameTime), we turn the
	// argument into a relative number of cycles in the future
	if (lcdControl.lcden)
	schedule(readEvent, clockEdge(ticksToCycles(startTime -
	curTick() +
	maxFrameTime)));
	}

	if (dmaPendingNum > (maxOutstandingDma - waterMark))
	return;

	if (!fillFifoEvent.scheduled())
	schedule(fillFifoEvent, clockEdge());
	}

	void
	Pl111::serialize(CheckpointOut &cp) const
	{
	DPRINTF(PL111, "Serializing ARM PL111\n");

	uint32_t lcdTiming0_serial = lcdTiming0;
	SERIALIZE_SCALAR(lcdTiming0_serial);

	uint32_t lcdTiming1_serial = lcdTiming1;
	SERIALIZE_SCALAR(lcdTiming1_serial);

	uint32_t lcdTiming2_serial = lcdTiming2;
	SERIALIZE_SCALAR(lcdTiming2_serial);

	uint32_t lcdTiming3_serial = lcdTiming3;
	SERIALIZE_SCALAR(lcdTiming3_serial);

	SERIALIZE_SCALAR(lcdUpbase);
	SERIALIZE_SCALAR(lcdLpbase);

	uint32_t lcdControl_serial = lcdControl;
	SERIALIZE_SCALAR(lcdControl_serial);

	uint8_t lcdImsc_serial = lcdImsc;
	SERIALIZE_SCALAR(lcdImsc_serial);

	uint8_t lcdRis_serial = lcdRis;
	SERIALIZE_SCALAR(lcdRis_serial);

	uint8_t lcdMis_serial = lcdMis;
	SERIALIZE_SCALAR(lcdMis_serial);

	SERIALIZE_ARRAY(lcdPalette, LcdPaletteSize);
	SERIALIZE_ARRAY(cursorImage, CrsrImageSize);

	SERIALIZE_SCALAR(clcdCrsrCtrl);
	SERIALIZE_SCALAR(clcdCrsrConfig);
	SERIALIZE_SCALAR(clcdCrsrPalette0);
	SERIALIZE_SCALAR(clcdCrsrPalette1);
	SERIALIZE_SCALAR(clcdCrsrXY);
	SERIALIZE_SCALAR(clcdCrsrClip);

	uint8_t clcdCrsrImsc_serial = clcdCrsrImsc;
	SERIALIZE_SCALAR(clcdCrsrImsc_serial);

	uint8_t clcdCrsrIcr_serial = clcdCrsrIcr;
	SERIALIZE_SCALAR(clcdCrsrIcr_serial);

	uint8_t clcdCrsrRis_serial = clcdCrsrRis;
	SERIALIZE_SCALAR(clcdCrsrRis_serial);

	uint8_t clcdCrsrMis_serial = clcdCrsrMis;
	SERIALIZE_SCALAR(clcdCrsrMis_serial);

	SERIALIZE_SCALAR(height);
	SERIALIZE_SCALAR(width);
	SERIALIZE_SCALAR(bytesPerPixel);

	SERIALIZE_ARRAY(dmaBuffer, buffer_size);
	SERIALIZE_SCALAR(startTime);
	SERIALIZE_SCALAR(startAddr);
	SERIALIZE_SCALAR(maxAddr);
	SERIALIZE_SCALAR(curAddr);
	SERIALIZE_SCALAR(waterMark);
	SERIALIZE_SCALAR(dmaPendingNum);

	Tick int_event_time = 0;
	Tick read_event_time = 0;
	Tick fill_fifo_event_time = 0;

	if (readEvent.scheduled())
	read_event_time = readEvent.when();
	if (fillFifoEvent.scheduled())
	fill_fifo_event_time = fillFifoEvent.when();
	if (intEvent.scheduled())
	int_event_time = intEvent.when();

	SERIALIZE_SCALAR(read_event_time);
	SERIALIZE_SCALAR(fill_fifo_event_time);
	SERIALIZE_SCALAR(int_event_time);

	vector<Tick> dma_done_event_tick;
	dma_done_event_tick.resize(maxOutstandingDma);
	for (int x = 0; x < maxOutstandingDma; x++) {
	dma_done_event_tick[x] = dmaDoneEventAll[x].scheduled() ?
	dmaDoneEventAll[x].when() : 0;
	}
	SERIALIZE_CONTAINER(dma_done_event_tick);
	}

	void
	Pl111::unserialize(CheckpointIn &cp)
	{
	DPRINTF(PL111, "Unserializing ARM PL111\n");

	uint32_t lcdTiming0_serial;
	UNSERIALIZE_SCALAR(lcdTiming0_serial);
	lcdTiming0 = lcdTiming0_serial;

	uint32_t lcdTiming1_serial;
	UNSERIALIZE_SCALAR(lcdTiming1_serial);
	lcdTiming1 = lcdTiming1_serial;

	uint32_t lcdTiming2_serial;
	UNSERIALIZE_SCALAR(lcdTiming2_serial);
	lcdTiming2 = lcdTiming2_serial;

	uint32_t lcdTiming3_serial;
	UNSERIALIZE_SCALAR(lcdTiming3_serial);
	lcdTiming3 = lcdTiming3_serial;

	UNSERIALIZE_SCALAR(lcdUpbase);
	UNSERIALIZE_SCALAR(lcdLpbase);

	uint32_t lcdControl_serial;
	UNSERIALIZE_SCALAR(lcdControl_serial);
	lcdControl = lcdControl_serial;

	uint8_t lcdImsc_serial;
	UNSERIALIZE_SCALAR(lcdImsc_serial);
	lcdImsc = lcdImsc_serial;

	uint8_t lcdRis_serial;
	UNSERIALIZE_SCALAR(lcdRis_serial);
	lcdRis = lcdRis_serial;

	uint8_t lcdMis_serial;
	UNSERIALIZE_SCALAR(lcdMis_serial);
	lcdMis = lcdMis_serial;

	UNSERIALIZE_ARRAY(lcdPalette, LcdPaletteSize);
	UNSERIALIZE_ARRAY(cursorImage, CrsrImageSize);

	UNSERIALIZE_SCALAR(clcdCrsrCtrl);
	UNSERIALIZE_SCALAR(clcdCrsrConfig);
	UNSERIALIZE_SCALAR(clcdCrsrPalette0);
	UNSERIALIZE_SCALAR(clcdCrsrPalette1);
	UNSERIALIZE_SCALAR(clcdCrsrXY);
	UNSERIALIZE_SCALAR(clcdCrsrClip);

	uint8_t clcdCrsrImsc_serial;
	UNSERIALIZE_SCALAR(clcdCrsrImsc_serial);
	clcdCrsrImsc = clcdCrsrImsc_serial;

	uint8_t clcdCrsrIcr_serial;
	UNSERIALIZE_SCALAR(clcdCrsrIcr_serial);
	clcdCrsrIcr = clcdCrsrIcr_serial;

	uint8_t clcdCrsrRis_serial;
	UNSERIALIZE_SCALAR(clcdCrsrRis_serial);
	clcdCrsrRis = clcdCrsrRis_serial;

	uint8_t clcdCrsrMis_serial;
	UNSERIALIZE_SCALAR(clcdCrsrMis_serial);
	clcdCrsrMis = clcdCrsrMis_serial;

	UNSERIALIZE_SCALAR(height);
	UNSERIALIZE_SCALAR(width);
	UNSERIALIZE_SCALAR(bytesPerPixel);

	UNSERIALIZE_ARRAY(dmaBuffer, buffer_size);
	UNSERIALIZE_SCALAR(startTime);
	UNSERIALIZE_SCALAR(startAddr);
	UNSERIALIZE_SCALAR(maxAddr);
	UNSERIALIZE_SCALAR(curAddr);
	UNSERIALIZE_SCALAR(waterMark);
	UNSERIALIZE_SCALAR(dmaPendingNum);

	Tick int_event_time = 0;
	Tick read_event_time = 0;
	Tick fill_fifo_event_time = 0;

	UNSERIALIZE_SCALAR(read_event_time);
	UNSERIALIZE_SCALAR(fill_fifo_event_time);
	UNSERIALIZE_SCALAR(int_event_time);

	if (int_event_time)
	schedule(intEvent, int_event_time);
	if (read_event_time)
	schedule(readEvent, read_event_time);
	if (fill_fifo_event_time)
	schedule(fillFifoEvent, fill_fifo_event_time);

	vector<Tick> dma_done_event_tick;
	dma_done_event_tick.resize(maxOutstandingDma);
	UNSERIALIZE_CONTAINER(dma_done_event_tick);
	dmaDoneEventFree.clear();
	for (int x = 0; x < maxOutstandingDma; x++) {
	if (dma_done_event_tick[x])
	schedule(dmaDoneEventAll[x], dma_done_event_tick[x]);
	else
	dmaDoneEventFree.push_back(&dmaDoneEventAll[x]);
	}
	assert(maxOutstandingDma - dmaDoneEventFree.size() == dmaPendingNum);

	if (lcdControl.lcdpwr) {
	updateVideoParams();
	fb.copyIn(dmaBuffer, converter);
	if (vnc)
	vnc->setDirty();
	}
	}

	void
	Pl111::generateInterrupt()
	{
	DPRINTF(PL111, "Generate Interrupt: lcdImsc=0x%x lcdRis=0x%x lcdMis=0x%x\n",
	(uint32_t)lcdImsc, (uint32_t)lcdRis, (uint32_t)lcdMis);
	lcdMis = lcdImsc & lcdRis;

	if (lcdMis.underflow \|\| lcdMis.baseaddr \|\| lcdMis.vcomp \|\| lcdMis.ahbmaster) {
	gic->sendInt(intNum);
	DPRINTF(PL111, " -- Generated\n");
	}
	}

	AddrRangeList
	Pl111::getAddrRanges() const
	{
	AddrRangeList ranges;
	ranges.push_back(RangeSize(pioAddr, pioSize));
	return ranges;
	}

	Pl111 *
	Pl111Params::create()
	{
	return new Pl111(this);
	}