4 * Copyright (c) 2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "qemu/osdep.h"
26 #include "hw/input/adb.h"
27 #include "qemu/module.h"
28 #include "adb-internal.h"
31 #define ADB_RET_NOTPRESENT (-2)
33 static void adb_device_reset(ADBDevice
*d
)
35 qdev_reset_all(DEVICE(d
));
38 int adb_request(ADBBusState
*s
, uint8_t *obuf
, const uint8_t *buf
, int len
)
44 if (cmd
== ADB_BUSRESET
) {
45 for(i
= 0; i
< s
->nb_devices
; i
++) {
51 devaddr
= buf
[0] >> 4;
52 for(i
= 0; i
< s
->nb_devices
; i
++) {
54 if (d
->devaddr
== devaddr
) {
55 ADBDeviceClass
*adc
= ADB_DEVICE_GET_CLASS(d
);
56 return adc
->devreq(d
, obuf
, buf
, len
);
59 return ADB_RET_NOTPRESENT
;
62 /* XXX: move that to cuda ? */
63 int adb_poll(ADBBusState
*s
, uint8_t *obuf
, uint16_t poll_mask
)
70 for(i
= 0; i
< s
->nb_devices
; i
++) {
71 if (s
->poll_index
>= s
->nb_devices
)
73 d
= s
->devices
[s
->poll_index
];
74 if ((1 << d
->devaddr
) & poll_mask
) {
75 buf
[0] = ADB_READREG
| (d
->devaddr
<< 4);
76 olen
= adb_request(s
, obuf
+ 1, buf
, 1);
77 /* if there is data, we poll again the same device */
89 static const TypeInfo adb_bus_type_info
= {
92 .instance_size
= sizeof(ADBBusState
),
95 const VMStateDescription vmstate_adb_device
= {
98 .minimum_version_id
= 0,
99 .fields
= (VMStateField
[]) {
100 VMSTATE_INT32(devaddr
, ADBDevice
),
101 VMSTATE_INT32(handler
, ADBDevice
),
102 VMSTATE_END_OF_LIST()
106 static void adb_device_realizefn(DeviceState
*dev
, Error
**errp
)
108 ADBDevice
*d
= ADB_DEVICE(dev
);
109 ADBBusState
*bus
= ADB_BUS(qdev_get_parent_bus(dev
));
111 if (bus
->nb_devices
>= MAX_ADB_DEVICES
) {
115 bus
->devices
[bus
->nb_devices
++] = d
;
118 static Property adb_device_properties
[] = {
119 DEFINE_PROP_BOOL("disable-direct-reg3-writes", ADBDevice
,
120 disable_direct_reg3_writes
, false),
121 DEFINE_PROP_END_OF_LIST(),
124 static void adb_device_class_init(ObjectClass
*oc
, void *data
)
126 DeviceClass
*dc
= DEVICE_CLASS(oc
);
128 dc
->realize
= adb_device_realizefn
;
129 dc
->props
= adb_device_properties
;
130 dc
->bus_type
= TYPE_ADB_BUS
;
133 static const TypeInfo adb_device_type_info
= {
134 .name
= TYPE_ADB_DEVICE
,
135 .parent
= TYPE_DEVICE
,
136 .instance_size
= sizeof(ADBDevice
),
138 .class_init
= adb_device_class_init
,
141 static void adb_register_types(void)
143 type_register_static(&adb_bus_type_info
);
144 type_register_static(&adb_device_type_info
);
147 type_init(adb_register_types
)