/*
* Copyright (c) 2010-2012 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
*/
/** @file
* Implementiation of a PL111 CLCD controller
*/
#ifndef __DEV_ARM_PL111_HH__
#define __DEV_ARM_PL111_HH__
#include <fstream>
#include "dev/arm/amba_device.hh"
#include "params/Pl111.hh"
#include "sim/serialize.hh"
class VncInput;
class Bitmap;
class Pl111: public AmbaDmaDevice
{
protected:
static const uint64_t AMBA_ID = ULL(0xb105f00d00141111);
/** ARM PL111 register map*/
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)
/**
* Event wrapper for dmaDone()
*
* This event calls pushes its this pointer onto the freeDoneEvent
* vector and calls dmaDone() when triggered.
*/
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";
}
};
/** Horizontal axis panel control register */
TimingReg0 lcdTiming0;
/** Vertical axis panel control register */
TimingReg1 lcdTiming1;
/** Clock and signal polarity control register */
TimingReg2 lcdTiming2;
/** Line end control register */
TimingReg3 lcdTiming3;
/** Upper panel frame base address register */
int lcdUpbase;
/** Lower panel frame base address register */
int lcdLpbase;
/** Control register */
ControlReg lcdControl;
/** Interrupt mask set/clear register */
InterruptReg lcdImsc;
/** Raw interrupt status register - const */
InterruptReg lcdRis;
/** Masked interrupt status register */
InterruptReg lcdMis;
/** 256x16-bit color palette registers
* 256 palette entries organized as 128 locations of two entries per word */
int lcdPalette[LcdPaletteSize];
/** Cursor image RAM register
* 256-word wide values defining images overlaid by the hw cursor mechanism */
int cursorImage[CrsrImageSize];
/** Cursor control register */
int clcdCrsrCtrl;
/** Cursor configuration register */
int clcdCrsrConfig;
/** Cursor palette registers */
int clcdCrsrPalette0;
int clcdCrsrPalette1;
/** Cursor XY position register */
int clcdCrsrXY;
/** Cursor clip position register */
int clcdCrsrClip;
/** Cursor interrupt mask set/clear register */
InterruptReg clcdCrsrImsc;
/** Cursor interrupt clear register */
InterruptReg clcdCrsrIcr;
/** Cursor raw interrupt status register - const */
InterruptReg clcdCrsrRis;
/** Cursor masked interrupt status register - const */
InterruptReg clcdCrsrMis;
/** Pixel clock */
Tick pixelClock;
/** VNC server */
VncInput *vnc;
/** Helper to write out bitmaps */
Bitmap *bmp;
/** Picture of what the current frame buffer looks like */
std::ostream *pic;
/** Frame buffer width - pixels per line */
uint16_t width;
/** Frame buffer height - lines per panel */
uint16_t height;
/** Bytes per pixel */
uint8_t bytesPerPixel;
/** CLCDC supports up to 1024x768 */
uint8_t *dmaBuffer;
/** Start time for frame buffer dma read */
Tick startTime;
/** Frame buffer base address */
Addr startAddr;
/** Frame buffer max address */
Addr maxAddr;
/** Frame buffer current address */
Addr curAddr;
/** DMA FIFO watermark */
int waterMark;
/** Number of pending dma reads */
int dmaPendingNum;
/** Send updated parameters to the vnc server */
void updateVideoParams();
/** DMA framebuffer read */
void readFramebuffer();
/** Generate dma framebuffer read event */
void generateReadEvent();
/** Function to generate interrupt */
void generateInterrupt();
/** fillFIFO event */
void fillFifo();
/** start the dmas off after power is enabled */
void startDma();
/** DMA done event */
void dmaDone();
/** DMA framebuffer read event */
EventWrapper<Pl111, &Pl111::readFramebuffer> readEvent;
/** Fill fifo */
EventWrapper<Pl111, &Pl111::fillFifo> fillFifoEvent;
/**@{*/
/**
* All pre-allocated DMA done events
*
* The PL111 model preallocates maxOutstandingDma number of
* DmaDoneEvents to avoid having to heap allocate every single
* event when it is needed. In order to keep track of which events
* are in flight and which are ready to be used, we use two
* different vectors. dmaDoneEventAll contains <i>all</i>
* DmaDoneEvents that the object may use, while dmaDoneEventFree
* contains a list of currently <i>unused</i> events. When an
* event needs to be scheduled, the last element of the
* dmaDoneEventFree is used and removed from the list. When an
* event fires, it is added to the end of the
* dmaEventFreeList. dmaDoneEventAll is never used except for in
* initialization and serialization.
*/
std::vector<DmaDoneEvent> dmaDoneEventAll;
/** Unused DMA done events that are ready to be scheduled */
std::vector<DmaDoneEvent *> dmaDoneEventFree;
/**@}*/
/** Wrapper to create an event out of the interrupt */
EventWrapper<Pl111, &Pl111::generateInterrupt> intEvent;
public:
typedef Pl111Params Params;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
Pl111(const Params *p);
~Pl111();
virtual Tick read(PacketPtr pkt);
virtual Tick write(PacketPtr pkt);
virtual void serialize(std::ostream &os);
virtual void unserialize(Checkpoint *cp, const std::string §ion);
/**
* Determine the address ranges that this device responds to.
*
* @return a list of non-overlapping address ranges
*/
AddrRangeList getAddrRanges() const;
};
#endif