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0975c304 TS |
1 | /* |
2 | * QEMU VMPort emulation | |
3 | * | |
bcc4e41f | 4 | * Copyright (C) 2007 Hervé Poussineau |
0975c304 TS |
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 | */ | |
83c9f4ca | 24 | #include "hw/hw.h" |
0d09e41a PB |
25 | #include "hw/isa/isa.h" |
26 | #include "hw/i386/pc.h" | |
9c17d615 | 27 | #include "sysemu/kvm.h" |
83c9f4ca | 28 | #include "hw/qdev.h" |
0975c304 | 29 | |
61ada15d AL |
30 | //#define VMPORT_DEBUG |
31 | ||
0975c304 TS |
32 | #define VMPORT_CMD_GETVERSION 0x0a |
33 | #define VMPORT_CMD_GETRAMSIZE 0x14 | |
34 | ||
35 | #define VMPORT_ENTRIES 0x2c | |
36 | #define VMPORT_MAGIC 0x564D5868 | |
37 | ||
f02317ad AF |
38 | #define TYPE_VMPORT "vmport" |
39 | #define VMPORT(obj) OBJECT_CHECK(VMPortState, (obj), TYPE_VMPORT) | |
40 | ||
41 | typedef struct VMPortState | |
0975c304 | 42 | { |
f02317ad AF |
43 | ISADevice parent_obj; |
44 | ||
f75317b4 | 45 | MemoryRegion io; |
0975c304 TS |
46 | IOPortReadFunc *func[VMPORT_ENTRIES]; |
47 | void *opaque[VMPORT_ENTRIES]; | |
48 | } VMPortState; | |
49 | ||
e14da0af | 50 | static VMPortState *port_state; |
0975c304 TS |
51 | |
52 | void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque) | |
53 | { | |
54 | if (command >= VMPORT_ENTRIES) | |
55 | return; | |
56 | ||
e14da0af MT |
57 | port_state->func[command] = func; |
58 | port_state->opaque[command] = opaque; | |
0975c304 TS |
59 | } |
60 | ||
360d613e AG |
61 | static uint64_t vmport_ioport_read(void *opaque, hwaddr addr, |
62 | unsigned size) | |
0975c304 TS |
63 | { |
64 | VMPortState *s = opaque; | |
4a8fa5dc | 65 | CPUX86State *env = cpu_single_env; |
0975c304 | 66 | unsigned char command; |
6dab28d5 | 67 | uint32_t eax; |
0975c304 | 68 | |
03c63b94 JK |
69 | cpu_synchronize_state(env); |
70 | ||
26fb5e48 | 71 | eax = env->regs[R_EAX]; |
0975c304 TS |
72 | if (eax != VMPORT_MAGIC) |
73 | return eax; | |
74 | ||
26fb5e48 | 75 | command = env->regs[R_ECX]; |
0975c304 TS |
76 | if (command >= VMPORT_ENTRIES) |
77 | return eax; | |
78 | if (!s->func[command]) | |
79 | { | |
61ada15d AL |
80 | #ifdef VMPORT_DEBUG |
81 | fprintf(stderr, "vmport: unknown command %x\n", command); | |
82 | #endif | |
0975c304 TS |
83 | return eax; |
84 | } | |
85 | ||
86 | return s->func[command](s->opaque[command], addr); | |
87 | } | |
88 | ||
360d613e AG |
89 | static void vmport_ioport_write(void *opaque, hwaddr addr, |
90 | uint64_t val, unsigned size) | |
e9396bde | 91 | { |
4a8fa5dc | 92 | CPUX86State *env = cpu_single_env; |
e9396bde | 93 | |
360d613e | 94 | env->regs[R_EAX] = vmport_ioport_read(opaque, addr, 4); |
e9396bde AL |
95 | } |
96 | ||
0975c304 TS |
97 | static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr) |
98 | { | |
4a8fa5dc | 99 | CPUX86State *env = cpu_single_env; |
0975c304 TS |
100 | env->regs[R_EBX] = VMPORT_MAGIC; |
101 | return 6; | |
102 | } | |
103 | ||
104 | static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr) | |
105 | { | |
4a8fa5dc | 106 | CPUX86State *env = cpu_single_env; |
0975c304 TS |
107 | env->regs[R_EBX] = 0x1177; |
108 | return ram_size; | |
109 | } | |
110 | ||
86d86414 BS |
111 | /* vmmouse helpers */ |
112 | void vmmouse_get_data(uint32_t *data) | |
113 | { | |
4a8fa5dc | 114 | CPUX86State *env = cpu_single_env; |
86d86414 BS |
115 | |
116 | data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX]; | |
117 | data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX]; | |
118 | data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI]; | |
119 | } | |
120 | ||
121 | void vmmouse_set_data(const uint32_t *data) | |
122 | { | |
4a8fa5dc | 123 | CPUX86State *env = cpu_single_env; |
86d86414 BS |
124 | |
125 | env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1]; | |
126 | env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3]; | |
127 | env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5]; | |
128 | } | |
129 | ||
f75317b4 | 130 | static const MemoryRegionOps vmport_ops = { |
360d613e AG |
131 | .read = vmport_ioport_read, |
132 | .write = vmport_ioport_write, | |
133 | .impl = { | |
134 | .min_access_size = 4, | |
135 | .max_access_size = 4, | |
136 | }, | |
137 | .endianness = DEVICE_LITTLE_ENDIAN, | |
f75317b4 RH |
138 | }; |
139 | ||
db895a1e | 140 | static void vmport_realizefn(DeviceState *dev, Error **errp) |
0975c304 | 141 | { |
db895a1e | 142 | ISADevice *isadev = ISA_DEVICE(dev); |
f02317ad | 143 | VMPortState *s = VMPORT(dev); |
0975c304 | 144 | |
f75317b4 | 145 | memory_region_init_io(&s->io, &vmport_ops, s, "vmport", 1); |
db895a1e | 146 | isa_register_ioport(isadev, &s->io, 0x5658); |
f75317b4 | 147 | |
e14da0af | 148 | port_state = s; |
0975c304 | 149 | /* Register some generic port commands */ |
26fb5e48 AJ |
150 | vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL); |
151 | vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL); | |
0975c304 | 152 | } |
6872ef61 | 153 | |
8f04ee08 AL |
154 | static void vmport_class_initfn(ObjectClass *klass, void *data) |
155 | { | |
39bffca2 | 156 | DeviceClass *dc = DEVICE_CLASS(klass); |
db895a1e AF |
157 | |
158 | dc->realize = vmport_realizefn; | |
39bffca2 | 159 | dc->no_user = 1; |
8f04ee08 AL |
160 | } |
161 | ||
8c43a6f0 | 162 | static const TypeInfo vmport_info = { |
f02317ad | 163 | .name = TYPE_VMPORT, |
39bffca2 AL |
164 | .parent = TYPE_ISA_DEVICE, |
165 | .instance_size = sizeof(VMPortState), | |
166 | .class_init = vmport_class_initfn, | |
6872ef61 BS |
167 | }; |
168 | ||
83f7d43a | 169 | static void vmport_register_types(void) |
6872ef61 | 170 | { |
39bffca2 | 171 | type_register_static(&vmport_info); |
6872ef61 | 172 | } |
83f7d43a AF |
173 | |
174 | type_init(vmport_register_types) |