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1 | 0975c304 | ths | /*
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2 | 0975c304 | ths | * QEMU VMPort emulation
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3 | 0975c304 | ths | *
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4 | 0975c304 | ths | * Copyright (C) 2007 Herv? Poussineau
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5 | 0975c304 | ths | *
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6 | 0975c304 | ths | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 0975c304 | ths | * of this software and associated documentation files (the "Software"), to deal
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8 | 0975c304 | ths | * in the Software without restriction, including without limitation the rights
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9 | 0975c304 | ths | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 0975c304 | ths | * copies of the Software, and to permit persons to whom the Software is
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11 | 0975c304 | ths | * furnished to do so, subject to the following conditions:
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12 | 0975c304 | ths | *
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13 | 0975c304 | ths | * The above copyright notice and this permission notice shall be included in
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14 | 0975c304 | ths | * all copies or substantial portions of the Software.
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15 | 0975c304 | ths | *
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16 | 0975c304 | ths | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 0975c304 | ths | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 0975c304 | ths | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 0975c304 | ths | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 0975c304 | ths | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 0975c304 | ths | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 0975c304 | ths | * THE SOFTWARE.
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23 | 0975c304 | ths | */
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24 | 87ecb68b | pbrook | #include "hw.h" |
25 | 87ecb68b | pbrook | #include "isa.h" |
26 | 87ecb68b | pbrook | #include "pc.h" |
27 | 03c63b94 | Jan Kiszka | #include "kvm.h" |
28 | 6872ef61 | Blue Swirl | #include "qdev.h" |
29 | 0975c304 | ths | |
30 | 61ada15d | aliguori | //#define VMPORT_DEBUG
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31 | 61ada15d | aliguori | |
32 | 0975c304 | ths | #define VMPORT_CMD_GETVERSION 0x0a |
33 | 0975c304 | ths | #define VMPORT_CMD_GETRAMSIZE 0x14 |
34 | 0975c304 | ths | |
35 | 0975c304 | ths | #define VMPORT_ENTRIES 0x2c |
36 | 0975c304 | ths | #define VMPORT_MAGIC 0x564D5868 |
37 | 0975c304 | ths | |
38 | 0975c304 | ths | typedef struct _VMPortState |
39 | 0975c304 | ths | { |
40 | 6872ef61 | Blue Swirl | ISADevice dev; |
41 | 0975c304 | ths | IOPortReadFunc *func[VMPORT_ENTRIES]; |
42 | 0975c304 | ths | void *opaque[VMPORT_ENTRIES];
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43 | 0975c304 | ths | } VMPortState; |
44 | 0975c304 | ths | |
45 | e14da0af | Marcelo Tosatti | static VMPortState *port_state;
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46 | 0975c304 | ths | |
47 | 0975c304 | ths | void vmport_register(unsigned char command, IOPortReadFunc *func, void *opaque) |
48 | 0975c304 | ths | { |
49 | 0975c304 | ths | if (command >= VMPORT_ENTRIES)
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50 | 0975c304 | ths | return;
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51 | 0975c304 | ths | |
52 | e14da0af | Marcelo Tosatti | port_state->func[command] = func; |
53 | e14da0af | Marcelo Tosatti | port_state->opaque[command] = opaque; |
54 | 0975c304 | ths | } |
55 | 0975c304 | ths | |
56 | 0975c304 | ths | static uint32_t vmport_ioport_read(void *opaque, uint32_t addr) |
57 | 0975c304 | ths | { |
58 | 0975c304 | ths | VMPortState *s = opaque; |
59 | 26fb5e48 | aurel32 | CPUState *env = cpu_single_env; |
60 | 0975c304 | ths | unsigned char command; |
61 | 6dab28d5 | ths | uint32_t eax; |
62 | 0975c304 | ths | |
63 | 03c63b94 | Jan Kiszka | cpu_synchronize_state(env); |
64 | 03c63b94 | Jan Kiszka | |
65 | 26fb5e48 | aurel32 | eax = env->regs[R_EAX]; |
66 | 0975c304 | ths | if (eax != VMPORT_MAGIC)
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67 | 0975c304 | ths | return eax;
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68 | 0975c304 | ths | |
69 | 26fb5e48 | aurel32 | command = env->regs[R_ECX]; |
70 | 0975c304 | ths | if (command >= VMPORT_ENTRIES)
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71 | 0975c304 | ths | return eax;
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72 | 0975c304 | ths | if (!s->func[command])
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73 | 0975c304 | ths | { |
74 | 61ada15d | aliguori | #ifdef VMPORT_DEBUG
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75 | 61ada15d | aliguori | fprintf(stderr, "vmport: unknown command %x\n", command);
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76 | 61ada15d | aliguori | #endif
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77 | 0975c304 | ths | return eax;
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78 | 0975c304 | ths | } |
79 | 0975c304 | ths | |
80 | 0975c304 | ths | return s->func[command](s->opaque[command], addr);
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81 | 0975c304 | ths | } |
82 | 0975c304 | ths | |
83 | e9396bde | aliguori | static void vmport_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
84 | e9396bde | aliguori | { |
85 | e9396bde | aliguori | CPUState *env = cpu_single_env; |
86 | e9396bde | aliguori | |
87 | e9396bde | aliguori | env->regs[R_EAX] = vmport_ioport_read(opaque, addr); |
88 | e9396bde | aliguori | } |
89 | e9396bde | aliguori | |
90 | 0975c304 | ths | static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr) |
91 | 0975c304 | ths | { |
92 | 26fb5e48 | aurel32 | CPUState *env = cpu_single_env; |
93 | 0975c304 | ths | env->regs[R_EBX] = VMPORT_MAGIC; |
94 | 0975c304 | ths | return 6; |
95 | 0975c304 | ths | } |
96 | 0975c304 | ths | |
97 | 0975c304 | ths | static uint32_t vmport_cmd_ram_size(void *opaque, uint32_t addr) |
98 | 0975c304 | ths | { |
99 | 26fb5e48 | aurel32 | CPUState *env = cpu_single_env; |
100 | 0975c304 | ths | env->regs[R_EBX] = 0x1177;
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101 | 0975c304 | ths | return ram_size;
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102 | 0975c304 | ths | } |
103 | 0975c304 | ths | |
104 | 86d86414 | Blue Swirl | /* vmmouse helpers */
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105 | 86d86414 | Blue Swirl | void vmmouse_get_data(uint32_t *data)
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106 | 86d86414 | Blue Swirl | { |
107 | 86d86414 | Blue Swirl | CPUState *env = cpu_single_env; |
108 | 86d86414 | Blue Swirl | |
109 | 86d86414 | Blue Swirl | data[0] = env->regs[R_EAX]; data[1] = env->regs[R_EBX]; |
110 | 86d86414 | Blue Swirl | data[2] = env->regs[R_ECX]; data[3] = env->regs[R_EDX]; |
111 | 86d86414 | Blue Swirl | data[4] = env->regs[R_ESI]; data[5] = env->regs[R_EDI]; |
112 | 86d86414 | Blue Swirl | } |
113 | 86d86414 | Blue Swirl | |
114 | 86d86414 | Blue Swirl | void vmmouse_set_data(const uint32_t *data) |
115 | 86d86414 | Blue Swirl | { |
116 | 86d86414 | Blue Swirl | CPUState *env = cpu_single_env; |
117 | 86d86414 | Blue Swirl | |
118 | 86d86414 | Blue Swirl | env->regs[R_EAX] = data[0]; env->regs[R_EBX] = data[1]; |
119 | 86d86414 | Blue Swirl | env->regs[R_ECX] = data[2]; env->regs[R_EDX] = data[3]; |
120 | 86d86414 | Blue Swirl | env->regs[R_ESI] = data[4]; env->regs[R_EDI] = data[5]; |
121 | 86d86414 | Blue Swirl | } |
122 | 86d86414 | Blue Swirl | |
123 | 6872ef61 | Blue Swirl | static int vmport_initfn(ISADevice *dev) |
124 | 0975c304 | ths | { |
125 | 6872ef61 | Blue Swirl | VMPortState *s = DO_UPCAST(VMPortState, dev, dev); |
126 | 0975c304 | ths | |
127 | e14da0af | Marcelo Tosatti | register_ioport_read(0x5658, 1, 4, vmport_ioport_read, s); |
128 | e14da0af | Marcelo Tosatti | register_ioport_write(0x5658, 1, 4, vmport_ioport_write, s); |
129 | 6872ef61 | Blue Swirl | isa_init_ioport(dev, 0x5658);
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130 | e14da0af | Marcelo Tosatti | port_state = s; |
131 | 0975c304 | ths | /* Register some generic port commands */
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132 | 26fb5e48 | aurel32 | vmport_register(VMPORT_CMD_GETVERSION, vmport_cmd_get_version, NULL);
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133 | 26fb5e48 | aurel32 | vmport_register(VMPORT_CMD_GETRAMSIZE, vmport_cmd_ram_size, NULL);
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134 | 6872ef61 | Blue Swirl | return 0; |
135 | 0975c304 | ths | } |
136 | 6872ef61 | Blue Swirl | |
137 | 6872ef61 | Blue Swirl | static ISADeviceInfo vmport_info = {
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138 | 6872ef61 | Blue Swirl | .qdev.name = "vmport",
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139 | 6872ef61 | Blue Swirl | .qdev.size = sizeof(VMPortState),
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140 | 6872ef61 | Blue Swirl | .qdev.no_user = 1,
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141 | 6872ef61 | Blue Swirl | .init = vmport_initfn, |
142 | 6872ef61 | Blue Swirl | }; |
143 | 6872ef61 | Blue Swirl | |
144 | 6872ef61 | Blue Swirl | static void vmport_dev_register(void) |
145 | 6872ef61 | Blue Swirl | { |
146 | 6872ef61 | Blue Swirl | isa_qdev_register(&vmport_info); |
147 | 6872ef61 | Blue Swirl | } |
148 | 6872ef61 | Blue Swirl | device_init(vmport_dev_register) |