PPC: e500: msync is 440 only, e500 has real sync
[qemu.git] / hw / vmport.c
1 /*
2 * QEMU VMPort emulation
3 *
4 * Copyright (C) 2007 Hervé Poussineau
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "hw.h"
25 #include "isa.h"
26 #include "pc.h"
27 #include "kvm.h"
28 #include "qdev.h"
29
30 //#define VMPORT_DEBUG
31
32 #define VMPORT_CMD_GETVERSION 0x0a
33 #define VMPORT_CMD_GETRAMSIZE 0x14
34
35 #define VMPORT_ENTRIES 0x2c
36 #define VMPORT_MAGIC 0x564D5868
37
38 typedef struct _VMPortState
39 {
40 ISADevice dev;
41 MemoryRegion io;
42 IOPortReadFunc *func[VMPORT_ENTRIES];
43 void *opaque[VMPORT_ENTRIES];
44 } VMPortState;
45
46 static VMPortState *port_state;
47
48 void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque)
49 {
50 if (command >= VMPORT_ENTRIES)
51 return;
52
53 port_state->func[command] = func;
54 port_state->opaque[command] = opaque;
55 }
56
57 static uint32_t vmport_ioport_read(void *opaque, uint32_t addr)
58 {
59 VMPortState *s = opaque;
60 CPUState *env = cpu_single_env;
61 unsigned char command;
62 uint32_t eax;
63
64 cpu_synchronize_state(env);
65
66 eax = env->regs[R_EAX];
67 if (eax != VMPORT_MAGIC)
68 return eax;
69
70 command = env->regs[R_ECX];
71 if (command >= VMPORT_ENTRIES)
72 return eax;
73 if (!s->func[command])
74 {
75 #ifdef VMPORT_DEBUG
76 fprintf(stderr, "vmport: unknown command %x\n", command);
77 #endif
78 return eax;
79 }
80
81 return s->func[command](s->opaque[command], addr);
82 }
83
84 static void vmport_ioport_write(void *opaque, uint32_t addr, uint32_t val)
85 {
86 CPUState *env = cpu_single_env;
87
88 env->regs[R_EAX] = vmport_ioport_read(opaque, addr);
89 }
90
91 static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr)
92 {
93 CPUState *env = cpu_single_env;
94 env->regs[R_EBX] = VMPORT_MAGIC;
95 return 6;
96 }
97
98 static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr)
99 {
100 CPUState *env = cpu_single_env;
101 env->regs[R_EBX] = 0x1177;
102 return ram_size;
103 }
104
105 /* vmmouse helpers */
106 void vmmouse_get_data(uint32_t *data)
107 {
108 CPUState *env = cpu_single_env;
109
110 data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX];
111 data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX];
112 data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI];
113 }
114
115 void vmmouse_set_data(const uint32_t *data)
116 {
117 CPUState *env = cpu_single_env;
118
119 env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1];
120 env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3];
121 env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5];
122 }
123
124 static const MemoryRegionPortio vmport_portio[] = {
125 {0, 1, 4, .read = vmport_ioport_read, .write = vmport_ioport_write },
126 PORTIO_END_OF_LIST(),
127 };
128
129 static const MemoryRegionOps vmport_ops = {
130 .old_portio = vmport_portio
131 };
132
133 static int vmport_initfn(ISADevice *dev)
134 {
135 VMPortState *s = DO_UPCAST(VMPortState, dev, dev);
136
137 memory_region_init_io(&s->io, &vmport_ops, s, "vmport", 1);
138 isa_register_ioport(dev, &s->io, 0x5658);
139
140 port_state = s;
141 /* Register some generic port commands */
142 vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);
143 vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL);
144 return 0;
145 }
146
147 static void vmport_class_initfn(ObjectClass *klass, void *data)
148 {
149 ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
150 ic->init = vmport_initfn;
151 }
152
153 static DeviceInfo vmport_info = {
154 .name = "vmport",
155 .size = sizeof(VMPortState),
156 .no_user = 1,
157 .class_init = vmport_class_initfn,
158 };
159
160 static void vmport_dev_register(void)
161 {
162 isa_qdev_register(&vmport_info);
163 }
164 device_init(vmport_dev_register)