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qemu/hw/input/adb.c
Mark Cave-Ayland e5dffaa5b1 adb.c: include ADBDevice parent state in KBDState and MouseState 
The parent ADBDevice contains the device id on the ADB bus. Make sure that
this state is included in both its subclasses since some clients (such as
OpenBIOS) reprogram each device id after enumeration.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Alexander Graf <agraf@suse.de>
2015-03-09 15:00:04 +01:00

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/*
* QEMU ADB support
*
* Copyright (c) 2004 Fabrice Bellard
*
* 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 "hw/hw.h"
#include "hw/input/adb.h"
#include "ui/console.h"
/* debug ADB */
//#define DEBUG_ADB
#ifdef DEBUG_ADB
#define ADB_DPRINTF(fmt, ...) \
do { printf("ADB: " fmt , ## __VA_ARGS__); } while (0)
#else
#define ADB_DPRINTF(fmt, ...)
#endif
/* ADB commands */
#define ADB_BUSRESET 0x00
#define ADB_FLUSH 0x01
#define ADB_WRITEREG 0x08
#define ADB_READREG 0x0c
/* ADB device commands */
#define ADB_CMD_SELF_TEST 0xff
#define ADB_CMD_CHANGE_ID 0xfe
#define ADB_CMD_CHANGE_ID_AND_ACT 0xfd
#define ADB_CMD_CHANGE_ID_AND_ENABLE 0x00
/* ADB default device IDs (upper 4 bits of ADB command byte) */
#define ADB_DEVID_DONGLE 1
#define ADB_DEVID_KEYBOARD 2
#define ADB_DEVID_MOUSE 3
#define ADB_DEVID_TABLET 4
#define ADB_DEVID_MODEM 5
#define ADB_DEVID_MISC 7
/* error codes */
#define ADB_RET_NOTPRESENT (-2)
static void adb_device_reset(ADBDevice *d)
{
qdev_reset_all(DEVICE(d));
}
int adb_request(ADBBusState *s, uint8_t *obuf, const uint8_t *buf, int len)
{
ADBDevice *d;
int devaddr, cmd, i;
cmd = buf[0] & 0xf;
if (cmd == ADB_BUSRESET) {
for(i = 0; i < s->nb_devices; i++) {
d = s->devices[i];
adb_device_reset(d);
}
return 0;
}
devaddr = buf[0] >> 4;
for(i = 0; i < s->nb_devices; i++) {
d = s->devices[i];
if (d->devaddr == devaddr) {
ADBDeviceClass *adc = ADB_DEVICE_GET_CLASS(d);
return adc->devreq(d, obuf, buf, len);
}
}
return ADB_RET_NOTPRESENT;
}
/* XXX: move that to cuda ? */
int adb_poll(ADBBusState *s, uint8_t *obuf)
{
ADBDevice *d;
int olen, i;
uint8_t buf[1];
olen = 0;
for(i = 0; i < s->nb_devices; i++) {
if (s->poll_index >= s->nb_devices)
s->poll_index = 0;
d = s->devices[s->poll_index];
buf[0] = ADB_READREG | (d->devaddr << 4);
olen = adb_request(s, obuf + 1, buf, 1);
/* if there is data, we poll again the same device */
if (olen > 0) {
obuf[0] = buf[0];
olen++;
break;
}
s->poll_index++;
}
return olen;
}
static const TypeInfo adb_bus_type_info = {
.name = TYPE_ADB_BUS,
.parent = TYPE_BUS,
.instance_size = sizeof(ADBBusState),
};
static const VMStateDescription vmstate_adb_device = {
.name = "adb_device",
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_INT32(devaddr, ADBDevice),
VMSTATE_INT32(handler, ADBDevice),
VMSTATE_END_OF_LIST()
}
};
static void adb_device_realizefn(DeviceState *dev, Error **errp)
{
ADBDevice *d = ADB_DEVICE(dev);
ADBBusState *bus = ADB_BUS(qdev_get_parent_bus(dev));
if (bus->nb_devices >= MAX_ADB_DEVICES) {
return;
}
bus->devices[bus->nb_devices++] = d;
}
static void adb_device_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = adb_device_realizefn;
dc->bus_type = TYPE_ADB_BUS;
}
static const TypeInfo adb_device_type_info = {
.name = TYPE_ADB_DEVICE,
.parent = TYPE_DEVICE,
.instance_size = sizeof(ADBDevice),
.abstract = true,
.class_init = adb_device_class_init,
};
/***************************************************************/
/* Keyboard ADB device */
#define ADB_KEYBOARD(obj) OBJECT_CHECK(KBDState, (obj), TYPE_ADB_KEYBOARD)
typedef struct KBDState {
/*< private >*/
ADBDevice parent_obj;
/*< public >*/
uint8_t data[128];
int rptr, wptr, count;
} KBDState;
#define ADB_KEYBOARD_CLASS(class) \
OBJECT_CLASS_CHECK(ADBKeyboardClass, (class), TYPE_ADB_KEYBOARD)
#define ADB_KEYBOARD_GET_CLASS(obj) \
OBJECT_GET_CLASS(ADBKeyboardClass, (obj), TYPE_ADB_KEYBOARD)
typedef struct ADBKeyboardClass {
/*< private >*/
ADBDeviceClass parent_class;
/*< public >*/
DeviceRealize parent_realize;
} ADBKeyboardClass;
static const uint8_t pc_to_adb_keycode[256] = {
0, 53, 18, 19, 20, 21, 23, 22, 26, 28, 25, 29, 27, 24, 51, 48,
12, 13, 14, 15, 17, 16, 32, 34, 31, 35, 33, 30, 36, 54, 0, 1,
2, 3, 5, 4, 38, 40, 37, 41, 39, 50, 56, 42, 6, 7, 8, 9,
11, 45, 46, 43, 47, 44,123, 67, 58, 49, 57,122,120, 99,118, 96,
97, 98,100,101,109, 71,107, 89, 91, 92, 78, 86, 87, 88, 69, 83,
84, 85, 82, 65, 0, 0, 10,103,111, 0, 0,110, 81, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 94, 0, 93, 0, 0, 0, 0, 0, 0,104,102, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 76,125, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,105, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 75, 0, 0,124, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0,115, 62,116, 0, 59, 0, 60, 0,119,
61,121,114,117, 0, 0, 0, 0, 0, 0, 0, 55,126, 0,127, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 95, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static void adb_kbd_put_keycode(void *opaque, int keycode)
{
KBDState *s = opaque;
if (s->count < sizeof(s->data)) {
s->data[s->wptr] = keycode;
if (++s->wptr == sizeof(s->data))
s->wptr = 0;
s->count++;
}
}
static int adb_kbd_poll(ADBDevice *d, uint8_t *obuf)
{
static int ext_keycode;
KBDState *s = ADB_KEYBOARD(d);
int adb_keycode, keycode;
int olen;
olen = 0;
for(;;) {
if (s->count == 0)
break;
keycode = s->data[s->rptr];
if (++s->rptr == sizeof(s->data))
s->rptr = 0;
s->count--;
if (keycode == 0xe0) {
ext_keycode = 1;
} else {
if (ext_keycode)
adb_keycode = pc_to_adb_keycode[keycode | 0x80];
else
adb_keycode = pc_to_adb_keycode[keycode & 0x7f];
obuf[0] = adb_keycode | (keycode & 0x80);
/* NOTE: could put a second keycode if needed */
obuf[1] = 0xff;
olen = 2;
ext_keycode = 0;
break;
}
}
return olen;
}
static int adb_kbd_request(ADBDevice *d, uint8_t *obuf,
const uint8_t *buf, int len)
{
KBDState *s = ADB_KEYBOARD(d);
int cmd, reg, olen;
if ((buf[0] & 0x0f) == ADB_FLUSH) {
/* flush keyboard fifo */
s->wptr = s->rptr = s->count = 0;
return 0;
}
cmd = buf[0] & 0xc;
reg = buf[0] & 0x3;
olen = 0;
switch(cmd) {
case ADB_WRITEREG:
switch(reg) {
case 2:
/* LED status */
break;
case 3:
switch(buf[2]) {
case ADB_CMD_SELF_TEST:
break;
case ADB_CMD_CHANGE_ID:
case ADB_CMD_CHANGE_ID_AND_ACT:
case ADB_CMD_CHANGE_ID_AND_ENABLE:
d->devaddr = buf[1] & 0xf;
break;
default:
/* XXX: check this */
d->devaddr = buf[1] & 0xf;
d->handler = buf[2];
break;
}
}
break;
case ADB_READREG:
switch(reg) {
case 0:
olen = adb_kbd_poll(d, obuf);
break;
case 1:
break;
case 2:
obuf[0] = 0x00; /* XXX: check this */
obuf[1] = 0x07; /* led status */
olen = 2;
break;
case 3:
obuf[0] = d->handler;
obuf[1] = d->devaddr;
olen = 2;
break;
}
break;
}
return olen;
}
static const VMStateDescription vmstate_adb_kbd = {
.name = "adb_kbd",
.version_id = 2,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(parent_obj, KBDState, 0, vmstate_adb_device, ADBDevice),
VMSTATE_BUFFER(data, KBDState),
VMSTATE_INT32(rptr, KBDState),
VMSTATE_INT32(wptr, KBDState),
VMSTATE_INT32(count, KBDState),
VMSTATE_END_OF_LIST()
}
};
static void adb_kbd_reset(DeviceState *dev)
{
ADBDevice *d = ADB_DEVICE(dev);
KBDState *s = ADB_KEYBOARD(dev);
d->handler = 1;
d->devaddr = ADB_DEVID_KEYBOARD;
memset(s->data, 0, sizeof(s->data));
s->rptr = 0;
s->wptr = 0;
s->count = 0;
}
static void adb_kbd_realizefn(DeviceState *dev, Error **errp)
{
ADBDevice *d = ADB_DEVICE(dev);
ADBKeyboardClass *akc = ADB_KEYBOARD_GET_CLASS(dev);
akc->parent_realize(dev, errp);
qemu_add_kbd_event_handler(adb_kbd_put_keycode, d);
}
static void adb_kbd_initfn(Object *obj)
{
ADBDevice *d = ADB_DEVICE(obj);
d->devaddr = ADB_DEVID_KEYBOARD;
}
static void adb_kbd_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
ADBKeyboardClass *akc = ADB_KEYBOARD_CLASS(oc);
akc->parent_realize = dc->realize;
dc->realize = adb_kbd_realizefn;
adc->devreq = adb_kbd_request;
dc->reset = adb_kbd_reset;
dc->vmsd = &vmstate_adb_kbd;
}
static const TypeInfo adb_kbd_type_info = {
.name = TYPE_ADB_KEYBOARD,
.parent = TYPE_ADB_DEVICE,
.instance_size = sizeof(KBDState),
.instance_init = adb_kbd_initfn,
.class_init = adb_kbd_class_init,
.class_size = sizeof(ADBKeyboardClass),
};
/***************************************************************/
/* Mouse ADB device */
#define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE)
typedef struct MouseState {
/*< public >*/
ADBDevice parent_obj;
/*< private >*/
int buttons_state, last_buttons_state;
int dx, dy, dz;
} MouseState;
#define ADB_MOUSE_CLASS(class) \
OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE)
#define ADB_MOUSE_GET_CLASS(obj) \
OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE)
typedef struct ADBMouseClass {
/*< public >*/
ADBDeviceClass parent_class;
/*< private >*/
DeviceRealize parent_realize;
} ADBMouseClass;
static void adb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
MouseState *s = opaque;
s->dx += dx1;
s->dy += dy1;
s->dz += dz1;
s->buttons_state = buttons_state;
}
static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf)
{
MouseState *s = ADB_MOUSE(d);
int dx, dy;
if (s->last_buttons_state == s->buttons_state &&
s->dx == 0 && s->dy == 0)
return 0;
dx = s->dx;
if (dx < -63)
dx = -63;
else if (dx > 63)
dx = 63;
dy = s->dy;
if (dy < -63)
dy = -63;
else if (dy > 63)
dy = 63;
s->dx -= dx;
s->dy -= dy;
s->last_buttons_state = s->buttons_state;
dx &= 0x7f;
dy &= 0x7f;
if (!(s->buttons_state & MOUSE_EVENT_LBUTTON))
dy |= 0x80;
if (!(s->buttons_state & MOUSE_EVENT_RBUTTON))
dx |= 0x80;
obuf[0] = dy;
obuf[1] = dx;
return 2;
}
static int adb_mouse_request(ADBDevice *d, uint8_t *obuf,
const uint8_t *buf, int len)
{
MouseState *s = ADB_MOUSE(d);
int cmd, reg, olen;
if ((buf[0] & 0x0f) == ADB_FLUSH) {
/* flush mouse fifo */
s->buttons_state = s->last_buttons_state;
s->dx = 0;
s->dy = 0;
s->dz = 0;
return 0;
}
cmd = buf[0] & 0xc;
reg = buf[0] & 0x3;
olen = 0;
switch(cmd) {
case ADB_WRITEREG:
ADB_DPRINTF("write reg %d val 0x%2.2x\n", reg, buf[1]);
switch(reg) {
case 2:
break;
case 3:
switch(buf[2]) {
case ADB_CMD_SELF_TEST:
break;
case ADB_CMD_CHANGE_ID:
case ADB_CMD_CHANGE_ID_AND_ACT:
case ADB_CMD_CHANGE_ID_AND_ENABLE:
d->devaddr = buf[1] & 0xf;
break;
default:
/* XXX: check this */
d->devaddr = buf[1] & 0xf;
break;
}
}
break;
case ADB_READREG:
switch(reg) {
case 0:
olen = adb_mouse_poll(d, obuf);
break;
case 1:
break;
case 3:
obuf[0] = d->handler;
obuf[1] = d->devaddr;
olen = 2;
break;
}
ADB_DPRINTF("read reg %d obuf[0] 0x%2.2x obuf[1] 0x%2.2x\n", reg,
obuf[0], obuf[1]);
break;
}
return olen;
}
static void adb_mouse_reset(DeviceState *dev)
{
ADBDevice *d = ADB_DEVICE(dev);
MouseState *s = ADB_MOUSE(dev);
d->handler = 2;
d->devaddr = ADB_DEVID_MOUSE;
s->last_buttons_state = s->buttons_state = 0;
s->dx = s->dy = s->dz = 0;
}
static const VMStateDescription vmstate_adb_mouse = {
.name = "adb_mouse",
.version_id = 2,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device,
ADBDevice),
VMSTATE_INT32(buttons_state, MouseState),
VMSTATE_INT32(last_buttons_state, MouseState),
VMSTATE_INT32(dx, MouseState),
VMSTATE_INT32(dy, MouseState),
VMSTATE_INT32(dz, MouseState),
VMSTATE_END_OF_LIST()
}
};
static void adb_mouse_realizefn(DeviceState *dev, Error **errp)
{
MouseState *s = ADB_MOUSE(dev);
ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev);
amc->parent_realize(dev, errp);
qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse");
}
static void adb_mouse_initfn(Object *obj)
{
ADBDevice *d = ADB_DEVICE(obj);
d->devaddr = ADB_DEVID_MOUSE;
}
static void adb_mouse_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
ADBMouseClass *amc = ADB_MOUSE_CLASS(oc);
amc->parent_realize = dc->realize;
dc->realize = adb_mouse_realizefn;
adc->devreq = adb_mouse_request;
dc->reset = adb_mouse_reset;
dc->vmsd = &vmstate_adb_mouse;
}
static const TypeInfo adb_mouse_type_info = {
.name = TYPE_ADB_MOUSE,
.parent = TYPE_ADB_DEVICE,
.instance_size = sizeof(MouseState),
.instance_init = adb_mouse_initfn,
.class_init = adb_mouse_class_init,
.class_size = sizeof(ADBMouseClass),
};
static void adb_register_types(void)
{
type_register_static(&adb_bus_type_info);
type_register_static(&adb_device_type_info);
type_register_static(&adb_kbd_type_info);
type_register_static(&adb_mouse_type_info);
}
type_init(adb_register_types)
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