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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Arm PrimeCell PL050 Keyboard / Mouse Interface
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "sysbus.h"
#include "ps2.h"
typedef struct {
SysBusDevice busdev;
MemoryRegion iomem;
void *dev;
uint32_t cr;
uint32_t clk;
uint32_t last;
int pending;
qemu_irq irq;
int is_mouse;
} pl050_state;
static const VMStateDescription vmstate_pl050 = {
.name = "pl050",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT32(cr, pl050_state),
VMSTATE_UINT32(clk, pl050_state),
VMSTATE_UINT32(last, pl050_state),
VMSTATE_INT32(pending, pl050_state),
VMSTATE_INT32(is_mouse, pl050_state),
VMSTATE_END_OF_LIST()
}
};
#define PL050_TXEMPTY (1 << 6)
#define PL050_TXBUSY (1 << 5)
#define PL050_RXFULL (1 << 4)
#define PL050_RXBUSY (1 << 3)
#define PL050_RXPARITY (1 << 2)
#define PL050_KMIC (1 << 1)
#define PL050_KMID (1 << 0)
static const unsigned char pl050_id[] =
{ 0x50, 0x10, 0x04, 0x00, 0x0d, 0xf0, 0x05, 0xb1 };
static void pl050_update(void *opaque, int level)
{
pl050_state *s = (pl050_state *)opaque;
int raise;
s->pending = level;
raise = (s->pending && (s->cr & 0x10) != 0)
|| (s->cr & 0x08) != 0;
qemu_set_irq(s->irq, raise);
}
static uint64_t pl050_read(void *opaque, hwaddr offset,
unsigned size)
{
pl050_state *s = (pl050_state *)opaque;
if (offset >= 0xfe0 && offset < 0x1000)
return pl050_id[(offset - 0xfe0) >> 2];
switch (offset >> 2) {
case 0: /* KMICR */
return s->cr;
case 1: /* KMISTAT */
{
uint8_t val;
uint32_t stat;
val = s->last;
val = val ^ (val >> 4);
val = val ^ (val >> 2);
val = (val ^ (val >> 1)) & 1;
stat = PL050_TXEMPTY;
if (val)
stat |= PL050_RXPARITY;
if (s->pending)
stat |= PL050_RXFULL;
return stat;
}
case 2: /* KMIDATA */
if (s->pending)
s->last = ps2_read_data(s->dev);
return s->last;
case 3: /* KMICLKDIV */
return s->clk;
case 4: /* KMIIR */
return s->pending | 2;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"pl050_read: Bad offset %x\n", (int)offset);
return 0;
}
}
static void pl050_write(void *opaque, hwaddr offset,
uint64_t value, unsigned size)
{
pl050_state *s = (pl050_state *)opaque;
switch (offset >> 2) {
case 0: /* KMICR */
s->cr = value;
pl050_update(s, s->pending);
/* ??? Need to implement the enable/disable bit. */
break;
case 2: /* KMIDATA */
/* ??? This should toggle the TX interrupt line. */
/* ??? This means kbd/mouse can block each other. */
if (s->is_mouse) {
ps2_write_mouse(s->dev, value);
} else {
ps2_write_keyboard(s->dev, value);
}
break;
case 3: /* KMICLKDIV */
s->clk = value;
return;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"pl050_write: Bad offset %x\n", (int)offset);
}
}
static const MemoryRegionOps pl050_ops = {
.read = pl050_read,
.write = pl050_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
static int pl050_init(SysBusDevice *dev, int is_mouse)
{
pl050_state *s = FROM_SYSBUS(pl050_state, dev);
memory_region_init_io(&s->iomem, &pl050_ops, s, "pl050", 0x1000);
sysbus_init_mmio(dev, &s->iomem);
sysbus_init_irq(dev, &s->irq);
s->is_mouse = is_mouse;
if (s->is_mouse)
s->dev = ps2_mouse_init(pl050_update, s);
else
s->dev = ps2_kbd_init(pl050_update, s);
return 0;
}
static int pl050_init_keyboard(SysBusDevice *dev)
{
return pl050_init(dev, 0);
}
static int pl050_init_mouse(SysBusDevice *dev)
{
return pl050_init(dev, 1);
}
static void pl050_kbd_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = pl050_init_keyboard;
dc->vmsd = &vmstate_pl050;
}
static TypeInfo pl050_kbd_info = {
.name = "pl050_keyboard",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(pl050_state),
.class_init = pl050_kbd_class_init,
};
static void pl050_mouse_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = pl050_init_mouse;
dc->vmsd = &vmstate_pl050;
}
static TypeInfo pl050_mouse_info = {
.name = "pl050_mouse",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(pl050_state),
.class_init = pl050_mouse_class_init,
};
static void pl050_register_types(void)
{
type_register_static(&pl050_kbd_info);
type_register_static(&pl050_mouse_info);
}
type_init(pl050_register_types)
|
