pl111.hh revision 9330:4a3269a11230 
1/*
2 * Copyright (c) 2010 ARM Limited
3 * All rights reserved
4 *
5 * The license below extends only to copyright in the software and shall
6 * not be construed as granting a license to any other intellectual
7 * property including but not limited to intellectual property relating
8 * to a hardware implementation of the functionality of the software
9 * licensed hereunder.  You may use the software subject to the license
10 * terms below provided that you ensure that this notice is replicated
11 * unmodified and in its entirety in all distributions of the software,
12 * modified or unmodified, in source code or in binary form.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions are
16 * met: redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer;
18 * redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution;
21 * neither the name of the copyright holders nor the names of its
22 * contributors may be used to endorse or promote products derived from
23 * this software without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 *
37 * Authors: William Wang
38 *          Ali Saidi
39 */
40
41
42/** @file
43 * Implementiation of a PL111 CLCD controller
44 */
45
46#ifndef __DEV_ARM_PL111_HH__
47#define __DEV_ARM_PL111_HH__
48
49#include <fstream>
50
51#include "dev/arm/amba_device.hh"
52#include "params/Pl111.hh"
53#include "sim/serialize.hh"
54
55class Gic;
56class VncInput;
57class Bitmap;
58
59class Pl111: public AmbaDmaDevice
60{
61  protected:
62    static const uint64_t AMBA_ID       = ULL(0xb105f00d00141111);
63    /** ARM PL111 register map*/
64    static const int LcdTiming0       = 0x000;
65    static const int LcdTiming1       = 0x004;
66    static const int LcdTiming2       = 0x008;
67    static const int LcdTiming3       = 0x00C;
68    static const int LcdUpBase        = 0x010;
69    static const int LcdLpBase        = 0x014;
70    static const int LcdControl       = 0x018;
71    static const int LcdImsc          = 0x01C;
72    static const int LcdRis           = 0x020;
73    static const int LcdMis           = 0x024;
74    static const int LcdIcr           = 0x028;
75    static const int LcdUpCurr        = 0x02C;
76    static const int LcdLpCurr        = 0x030;
77    static const int LcdPalette       = 0x200;
78    static const int CrsrImage        = 0x800;
79    static const int ClcdCrsrCtrl     = 0xC00;
80    static const int ClcdCrsrConfig   = 0xC04;
81    static const int ClcdCrsrPalette0 = 0xC08;
82    static const int ClcdCrsrPalette1 = 0xC0C;
83    static const int ClcdCrsrXY       = 0xC10;
84    static const int ClcdCrsrClip     = 0xC14;
85    static const int ClcdCrsrImsc     = 0xC20;
86    static const int ClcdCrsrIcr      = 0xC24;
87    static const int ClcdCrsrRis      = 0xC28;
88    static const int ClcdCrsrMis      = 0xC2C;
89
90    static const int LcdPaletteSize   = 128;
91    static const int CrsrImageSize    = 256;
92
93    static const int LcdMaxWidth      = 1024; // pixels per line
94    static const int LcdMaxHeight     = 768;  // lines per panel
95
96    static const int dmaSize            = 8;    // 64 bits
97    static const int maxOutstandingDma  = 16;   // 16 deep FIFO of 64 bits
98
99    enum LcdMode {
100        bpp1 = 0,
101        bpp2,
102        bpp4,
103        bpp8,
104        bpp16,
105        bpp24,
106        bpp16m565,
107        bpp12
108    };
109
110    BitUnion8(InterruptReg)
111        Bitfield<1> underflow;
112        Bitfield<2> baseaddr;
113        Bitfield<3> vcomp;
114        Bitfield<4> ahbmaster;
115    EndBitUnion(InterruptReg)
116
117    BitUnion32(TimingReg0)
118        Bitfield<7,2> ppl;
119        Bitfield<15,8> hsw;
120        Bitfield<23,16> hfp;
121        Bitfield<31,24> hbp;
122    EndBitUnion(TimingReg0)
123
124    BitUnion32(TimingReg1)
125        Bitfield<9,0> lpp;
126        Bitfield<15,10> vsw;
127        Bitfield<23,16> vfp;
128        Bitfield<31,24> vbp;
129    EndBitUnion(TimingReg1)
130
131    BitUnion32(TimingReg2)
132        Bitfield<4,0> pcdlo;
133        Bitfield<5> clksel;
134        Bitfield<10,6> acb;
135        Bitfield<11> avs;
136        Bitfield<12> ihs;
137        Bitfield<13> ipc;
138        Bitfield<14> ioe;
139        Bitfield<25,16> cpl;
140        Bitfield<26> bcd;
141        Bitfield<31,27> pcdhi;
142    EndBitUnion(TimingReg2)
143
144    BitUnion32(TimingReg3)
145        Bitfield<6,0> led;
146        Bitfield<16> lee;
147    EndBitUnion(TimingReg3)
148
149    BitUnion32(ControlReg)
150        Bitfield<0> lcden;
151        Bitfield<3,1> lcdbpp;
152        Bitfield<4> lcdbw;
153        Bitfield<5> lcdtft;
154        Bitfield<6> lcdmono8;
155        Bitfield<7> lcddual;
156        Bitfield<8> bgr;
157        Bitfield<9> bebo;
158        Bitfield<10> bepo;
159        Bitfield<11> lcdpwr;
160        Bitfield<13,12> lcdvcomp;
161        Bitfield<16> watermark;
162    EndBitUnion(ControlReg)
163
164    /** Horizontal axis panel control register */
165    TimingReg0 lcdTiming0;
166
167    /** Vertical axis panel control register */
168    TimingReg1 lcdTiming1;
169
170    /** Clock and signal polarity control register */
171    TimingReg2 lcdTiming2;
172
173    /** Line end control register */
174    TimingReg3 lcdTiming3;
175
176    /** Upper panel frame base address register */
177    int lcdUpbase;
178
179    /** Lower panel frame base address register */
180    int lcdLpbase;
181
182    /** Control register */
183    ControlReg lcdControl;
184
185    /** Interrupt mask set/clear register */
186    InterruptReg lcdImsc;
187
188    /** Raw interrupt status register - const */
189    InterruptReg lcdRis;
190
191    /** Masked interrupt status register */
192    InterruptReg lcdMis;
193
194    /** 256x16-bit color palette registers
195     * 256 palette entries organized as 128 locations of two entries per word */
196    int lcdPalette[LcdPaletteSize];
197
198    /** Cursor image RAM register
199     * 256-word wide values defining images overlaid by the hw cursor mechanism */
200    int cursorImage[CrsrImageSize];
201
202    /** Cursor control register */
203    int clcdCrsrCtrl;
204
205    /** Cursor configuration register */
206    int clcdCrsrConfig;
207
208    /** Cursor palette registers */
209    int clcdCrsrPalette0;
210    int clcdCrsrPalette1;
211
212    /** Cursor XY position register */
213    int clcdCrsrXY;
214
215    /** Cursor clip position register */
216    int clcdCrsrClip;
217
218    /** Cursor interrupt mask set/clear register */
219    InterruptReg clcdCrsrImsc;
220
221    /** Cursor interrupt clear register */
222    InterruptReg clcdCrsrIcr;
223
224    /** Cursor raw interrupt status register - const */
225    InterruptReg clcdCrsrRis;
226
227    /** Cursor masked interrupt status register - const */
228    InterruptReg clcdCrsrMis;
229
230    /** VNC server */
231    VncInput *vnc;
232
233    /** Helper to write out bitmaps */
234    Bitmap *bmp;
235
236    /** Picture of what the current frame buffer looks like */
237    std::ostream *pic;
238
239    /** Frame buffer width - pixels per line */
240    uint16_t width;
241
242    /** Frame buffer height - lines per panel */
243    uint16_t height;
244
245    /** Bytes per pixel */
246    uint8_t bytesPerPixel;
247
248    /** CLCDC supports up to 1024x768 */
249    uint8_t *dmaBuffer;
250
251    /** Start time for frame buffer dma read */
252    Tick startTime;
253
254    /** Frame buffer base address */
255    Addr startAddr;
256
257    /** Frame buffer max address */
258    Addr maxAddr;
259
260    /** Frame buffer current address */
261    Addr curAddr;
262
263    /** DMA FIFO watermark */
264    int waterMark;
265
266    /** Number of pending dma reads */
267    int dmaPendingNum;
268
269    /** Send updated parameters to the vnc server */
270    void updateVideoParams();
271
272    /** DMA framebuffer read */
273    void readFramebuffer();
274
275    /** Generate dma framebuffer read event */
276    void generateReadEvent();
277
278    /** Function to generate interrupt */
279    void generateInterrupt();
280
281    /** fillFIFO event */
282    void fillFifo();
283
284    /** start the dmas off after power is enabled */
285    void startDma();
286
287    /** DMA done event */
288    void dmaDone();
289
290    /** DMA framebuffer read event */
291    EventWrapper<Pl111, &Pl111::readFramebuffer> readEvent;
292
293    /** Fill fifo */
294    EventWrapper<Pl111, &Pl111::fillFifo> fillFifoEvent;
295
296    /** DMA done event */
297    std::vector<EventWrapper<Pl111, &Pl111::dmaDone> > dmaDoneEvent;
298
299    /** Wrapper to create an event out of the interrupt */
300    EventWrapper<Pl111, &Pl111::generateInterrupt> intEvent;
301
302  public:
303    typedef Pl111Params Params;
304
305    const Params *
306    params() const
307    {
308        return dynamic_cast<const Params *>(_params);
309    }
310    Pl111(const Params *p);
311    ~Pl111();
312
313    virtual Tick read(PacketPtr pkt);
314    virtual Tick write(PacketPtr pkt);
315
316    virtual void serialize(std::ostream &os);
317    virtual void unserialize(Checkpoint *cp, const std::string &section);
318
319    /**
320     * Determine the address ranges that this device responds to.
321     *
322     * @return a list of non-overlapping address ranges
323     */
324    AddrRangeList getAddrRanges() const;
325};
326
327#endif
328