This is to allow us to distinguish between ADB device events and ADB bus events separately. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Finn Thain <fthain@telegraphics.com.au> Acked-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200623204936.24064-22-mark.cave-ayland@ilande.co.uk>
283 lines
7.7 KiB
C
283 lines
7.7 KiB
C
/*
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* QEMU ADB mouse support
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "ui/console.h"
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#include "hw/input/adb.h"
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#include "migration/vmstate.h"
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#include "qemu/module.h"
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#include "adb-internal.h"
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#include "trace.h"
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#define ADB_MOUSE(obj) OBJECT_CHECK(MouseState, (obj), TYPE_ADB_MOUSE)
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typedef struct MouseState {
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/*< public >*/
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ADBDevice parent_obj;
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/*< private >*/
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int buttons_state, last_buttons_state;
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int dx, dy, dz;
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} MouseState;
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#define ADB_MOUSE_CLASS(class) \
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OBJECT_CLASS_CHECK(ADBMouseClass, (class), TYPE_ADB_MOUSE)
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#define ADB_MOUSE_GET_CLASS(obj) \
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OBJECT_GET_CLASS(ADBMouseClass, (obj), TYPE_ADB_MOUSE)
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typedef struct ADBMouseClass {
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/*< public >*/
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ADBDeviceClass parent_class;
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/*< private >*/
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DeviceRealize parent_realize;
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} ADBMouseClass;
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static void adb_mouse_event(void *opaque,
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int dx1, int dy1, int dz1, int buttons_state)
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{
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MouseState *s = opaque;
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s->dx += dx1;
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s->dy += dy1;
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s->dz += dz1;
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s->buttons_state = buttons_state;
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}
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static int adb_mouse_poll(ADBDevice *d, uint8_t *obuf)
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{
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MouseState *s = ADB_MOUSE(d);
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int dx, dy;
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if (s->last_buttons_state == s->buttons_state &&
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s->dx == 0 && s->dy == 0) {
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return 0;
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}
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dx = s->dx;
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if (dx < -63) {
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dx = -63;
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} else if (dx > 63) {
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dx = 63;
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}
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dy = s->dy;
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if (dy < -63) {
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dy = -63;
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} else if (dy > 63) {
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dy = 63;
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}
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s->dx -= dx;
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s->dy -= dy;
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s->last_buttons_state = s->buttons_state;
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dx &= 0x7f;
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dy &= 0x7f;
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if (!(s->buttons_state & MOUSE_EVENT_LBUTTON)) {
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dy |= 0x80;
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}
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if (!(s->buttons_state & MOUSE_EVENT_RBUTTON)) {
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dx |= 0x80;
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}
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obuf[0] = dy;
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obuf[1] = dx;
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return 2;
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}
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static int adb_mouse_request(ADBDevice *d, uint8_t *obuf,
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const uint8_t *buf, int len)
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{
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MouseState *s = ADB_MOUSE(d);
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int cmd, reg, olen;
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if ((buf[0] & 0x0f) == ADB_FLUSH) {
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/* flush mouse fifo */
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s->buttons_state = s->last_buttons_state;
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s->dx = 0;
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s->dy = 0;
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s->dz = 0;
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trace_adb_device_mouse_flush();
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return 0;
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}
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cmd = buf[0] & 0xc;
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reg = buf[0] & 0x3;
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olen = 0;
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switch (cmd) {
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case ADB_WRITEREG:
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trace_adb_device_mouse_writereg(reg, buf[1]);
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switch (reg) {
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case 2:
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break;
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case 3:
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/*
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* MacOS 9 has a bug in its ADB driver whereby after configuring
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* the ADB bus devices it sends another write of invalid length
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* to reg 3. Make sure we ignore it to prevent an address clash
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* with the previous device.
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*/
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if (len != 3) {
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return 0;
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}
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switch (buf[2]) {
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case ADB_CMD_SELF_TEST:
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break;
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case ADB_CMD_CHANGE_ID:
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case ADB_CMD_CHANGE_ID_AND_ACT:
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case ADB_CMD_CHANGE_ID_AND_ENABLE:
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d->devaddr = buf[1] & 0xf;
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trace_adb_device_mouse_request_change_addr(d->devaddr);
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break;
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default:
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d->devaddr = buf[1] & 0xf;
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/*
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* we support handlers:
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* 0x01: Classic Apple Mouse Protocol / 100 cpi operations
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* 0x02: Classic Apple Mouse Protocol / 200 cpi operations
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* we don't support handlers (at least):
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* 0x03: Mouse systems A3 trackball
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* 0x04: Extended Apple Mouse Protocol
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* 0x2f: Microspeed mouse
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* 0x42: Macally
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* 0x5f: Microspeed mouse
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* 0x66: Microspeed mouse
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*/
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if (buf[2] == 1 || buf[2] == 2) {
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d->handler = buf[2];
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}
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trace_adb_device_mouse_request_change_addr_and_handler(
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d->devaddr, d->handler);
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break;
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}
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}
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break;
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case ADB_READREG:
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switch (reg) {
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case 0:
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olen = adb_mouse_poll(d, obuf);
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break;
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case 1:
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break;
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case 3:
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obuf[0] = d->devaddr;
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obuf[1] = d->handler;
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olen = 2;
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break;
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}
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trace_adb_device_mouse_readreg(reg, obuf[0], obuf[1]);
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break;
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}
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return olen;
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}
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static bool adb_mouse_has_data(ADBDevice *d)
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{
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MouseState *s = ADB_MOUSE(d);
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return !(s->last_buttons_state == s->buttons_state &&
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s->dx == 0 && s->dy == 0);
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}
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static void adb_mouse_reset(DeviceState *dev)
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{
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ADBDevice *d = ADB_DEVICE(dev);
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MouseState *s = ADB_MOUSE(dev);
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d->handler = 2;
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d->devaddr = ADB_DEVID_MOUSE;
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s->last_buttons_state = s->buttons_state = 0;
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s->dx = s->dy = s->dz = 0;
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}
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static const VMStateDescription vmstate_adb_mouse = {
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.name = "adb_mouse",
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.version_id = 2,
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.minimum_version_id = 2,
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.fields = (VMStateField[]) {
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VMSTATE_STRUCT(parent_obj, MouseState, 0, vmstate_adb_device,
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ADBDevice),
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VMSTATE_INT32(buttons_state, MouseState),
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VMSTATE_INT32(last_buttons_state, MouseState),
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VMSTATE_INT32(dx, MouseState),
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VMSTATE_INT32(dy, MouseState),
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VMSTATE_INT32(dz, MouseState),
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VMSTATE_END_OF_LIST()
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}
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};
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static void adb_mouse_realizefn(DeviceState *dev, Error **errp)
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{
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MouseState *s = ADB_MOUSE(dev);
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ADBMouseClass *amc = ADB_MOUSE_GET_CLASS(dev);
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amc->parent_realize(dev, errp);
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qemu_add_mouse_event_handler(adb_mouse_event, s, 0, "QEMU ADB Mouse");
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}
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static void adb_mouse_initfn(Object *obj)
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{
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ADBDevice *d = ADB_DEVICE(obj);
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d->devaddr = ADB_DEVID_MOUSE;
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}
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static void adb_mouse_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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ADBDeviceClass *adc = ADB_DEVICE_CLASS(oc);
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ADBMouseClass *amc = ADB_MOUSE_CLASS(oc);
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device_class_set_parent_realize(dc, adb_mouse_realizefn,
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&amc->parent_realize);
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set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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adc->devreq = adb_mouse_request;
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adc->devhasdata = adb_mouse_has_data;
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dc->reset = adb_mouse_reset;
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dc->vmsd = &vmstate_adb_mouse;
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}
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static const TypeInfo adb_mouse_type_info = {
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.name = TYPE_ADB_MOUSE,
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.parent = TYPE_ADB_DEVICE,
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.instance_size = sizeof(MouseState),
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.instance_init = adb_mouse_initfn,
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.class_init = adb_mouse_class_init,
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.class_size = sizeof(ADBMouseClass),
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};
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static void adb_mouse_register_types(void)
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{
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type_register_static(&adb_mouse_type_info);
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}
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type_init(adb_mouse_register_types)
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