1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
/*
* Copyright (c) 2010 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.
*
* Copyright (c) 2005 The Regents of The University of Michigan
* All rights reserved.
*
* 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
*/
/** @file
* Implementiation of a PL050 KMI
*/
#ifndef __DEV_ARM_PL050_HH__
#define __DEV_ARM_PL050_HH__
#include <list>
#include "base/vnc/vncinput.hh"
#include "dev/arm/amba_device.hh"
#include "params/Pl050.hh"
class Pl050 : public AmbaIntDevice, public VncKeyboard, public VncMouse
{
protected:
static const int kmiCr = 0x000;
static const int kmiStat = 0x004;
static const int kmiData = 0x008;
static const int kmiClkDiv = 0x00C;
static const int kmiISR = 0x010;
BitUnion8(ControlReg)
Bitfield<0> force_clock_low;
Bitfield<1> force_data_low;
Bitfield<2> enable;
Bitfield<3> txint_enable;
Bitfield<4> rxint_enable;
Bitfield<5> type;
EndBitUnion(ControlReg)
/** control register
*/
ControlReg control;
/** KMI status register */
BitUnion8(StatusReg)
Bitfield<0> data_in;
Bitfield<1> clk_in;
Bitfield<2> rxparity;
Bitfield<3> rxbusy;
Bitfield<4> rxfull;
Bitfield<5> txbusy;
Bitfield<6> txempty;
EndBitUnion(StatusReg)
StatusReg status;
/** clock divisor register
* This register is just kept around to satisfy reads after driver does
* writes. The divsor does nothing, as we're not actually signaling ps2
* serial commands to anything.
*/
uint8_t clkdiv;
BitUnion8(InterruptReg)
Bitfield<0> rx;
Bitfield<1> tx;
EndBitUnion(InterruptReg)
/** interrupt status register. */
InterruptReg interrupts;
/** raw interrupt register (unmasked) */
InterruptReg rawInterrupts;
/** If the controller should ignore the next data byte and acknowledge it.
* The driver is attempting to setup some feature we don't care about
*/
int ackNext;
/** is the shift key currently down */
bool shiftDown;
/** The vnc server we're connected to (if any) */
VncInput *vnc;
/** If the linux driver has initialized the device yet and thus can we send
* mouse data */
bool driverInitialized;
/** Update the status of the interrupt registers and schedule an interrupt
* if required */
void updateIntStatus();
/** Function to generate interrupt */
void generateInterrupt();
/** Wrapper to create an event out of the thing */
EventWrapper<Pl050, &Pl050::generateInterrupt> intEvent;
/** Receive queue. This list contains all the pending commands that
* need to be sent to the driver
*/
std::list<uint8_t> rxQueue;
/** Handle a command sent to the kmi and respond appropriately
*/
void processCommand(uint8_t byte);
public:
typedef Pl050Params Params;
const Params *
params() const
{
return dynamic_cast<const Params *>(_params);
}
Pl050(const Params *p);
virtual Tick read(PacketPtr pkt);
virtual Tick write(PacketPtr pkt);
virtual void mouseAt(uint16_t x, uint16_t y, uint8_t buttons);
virtual void keyPress(uint32_t key, bool down);
void serialize(CheckpointOut &cp) const M5_ATTR_OVERRIDE;
void unserialize(CheckpointIn &cp) M5_ATTR_OVERRIDE;
};
#endif // __DEV_ARM_PL050_HH__
|
