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
|
/*
* QEMU VMPort emulation
*
* Copyright (C) 2007 Hervé Poussineau
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/isa/isa.h"
#include "hw/i386/pc.h"
#include "sysemu/hw_accel.h"
#include "qemu/log.h"
#include "vmport.h"
#include "trace.h"
#define VMPORT_CMD_GETVERSION 0x0a
#define VMPORT_CMD_GETRAMSIZE 0x14
#define VMPORT_ENTRIES 0x2c
#define VMPORT_MAGIC 0x564D5868
#define VMPORT(obj) OBJECT_CHECK(VMPortState, (obj), TYPE_VMPORT)
typedef struct VMPortState {
ISADevice parent_obj;
MemoryRegion io;
VMPortReadFunc *func[VMPORT_ENTRIES];
void *opaque[VMPORT_ENTRIES];
} VMPortState;
static VMPortState *port_state;
void vmport_register(unsigned char command, VMPortReadFunc *func, void *opaque)
{
if (command >= VMPORT_ENTRIES) {
return;
}
trace_vmport_register(command, func, opaque);
port_state->func[command] = func;
port_state->opaque[command] = opaque;
}
static uint64_t vmport_ioport_read(void *opaque, hwaddr addr,
unsigned size)
{
VMPortState *s = opaque;
CPUState *cs = current_cpu;
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
unsigned char command;
uint32_t eax;
cpu_synchronize_state(cs);
eax = env->regs[R_EAX];
if (eax != VMPORT_MAGIC) {
return eax;
}
command = env->regs[R_ECX];
trace_vmport_command(command);
if (command >= VMPORT_ENTRIES || !s->func[command]) {
qemu_log_mask(LOG_UNIMP, "vmport: unknown command %x\n", command);
return eax;
}
return s->func[command](s->opaque[command], addr);
}
static void vmport_ioport_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
X86CPU *cpu = X86_CPU(current_cpu);
cpu->env.regs[R_EAX] = vmport_ioport_read(opaque, addr, 4);
}
static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr)
{
X86CPU *cpu = X86_CPU(current_cpu);
cpu->env.regs[R_EBX] = VMPORT_MAGIC;
return 6;
}
static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr)
{
X86CPU *cpu = X86_CPU(current_cpu);
cpu->env.regs[R_EBX] = 0x1177;
return ram_size;
}
/* vmmouse helpers */
void vmmouse_get_data(uint32_t *data)
{
X86CPU *cpu = X86_CPU(current_cpu);
CPUX86State *env = &cpu->env;
data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
}
void vmmouse_set_data(const uint32_t *data)
{
X86CPU *cpu = X86_CPU(current_cpu);
CPUX86State *env = &cpu->env;
env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
}
static const MemoryRegionOps vmport_ops = {
.read = vmport_ioport_read,
.write = vmport_ioport_write,
.impl = {
.min_access_size = 4,
.max_access_size = 4,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void vmport_realizefn(DeviceState *dev, Error **errp)
{
ISADevice *isadev = ISA_DEVICE(dev);
VMPortState *s = VMPORT(dev);
memory_region_init_io(&s->io, OBJECT(s), &vmport_ops, s, "vmport", 1);
isa_register_ioport(isadev, &s->io, 0x5658);
port_state = s;
/* Register some generic port commands */
vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);
vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL);
}
static void vmport_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = vmport_realizefn;
/* Reason: realize sets global port_state */
dc->user_creatable = false;
}
static const TypeInfo vmport_info = {
.name = TYPE_VMPORT,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(VMPortState),
.class_init = vmport_class_initfn,
};
static void vmport_register_types(void)
{
type_register_static(&vmport_info);
}
type_init(vmport_register_types)
|
