/* * QEMU ADB mouse 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 "qemu/osdep.h" #include "ui/console.h" #include "hw/input/adb.h" #include "migration/vmstate.h" #include "qemu/module.h" #include "adb-internal.h" #include "trace.h" #include "qom/object.h" OBJECT_DECLARE_TYPE(MouseState, ADBMouseClass, ADB_MOUSE) struct MouseState { /*< public >*/ ADBDevice parent_obj; /*< private >*/ QemuInputHandlerState *hs; int buttons_state, last_buttons_state; int dx, dy, dz; }; struct ADBMouseClass { /*< public >*/ ADBDeviceClass parent_class; /*< private >*/ DeviceRealize parent_realize; }; #define ADB_MOUSE_BUTTON_LEFT 0x01 #define ADB_MOUSE_BUTTON_RIGHT 0x02 static void adb_mouse_handle_event(DeviceState *dev, QemuConsole *src, InputEvent *evt) { MouseState *s = (MouseState *)dev; InputMoveEvent *move; InputBtnEvent *btn; static const int bmap[INPUT_BUTTON__MAX] = { [INPUT_BUTTON_LEFT] = ADB_MOUSE_BUTTON_LEFT, [INPUT_BUTTON_RIGHT] = ADB_MOUSE_BUTTON_RIGHT, }; switch (evt->type) { case INPUT_EVENT_KIND_REL: move = evt->u.rel.data; if (move->axis == INPUT_AXIS_X) { s->dx += move->value; } else if (move->axis == INPUT_AXIS_Y) { s->dy += move->value; } break; case INPUT_EVENT_KIND_BTN: btn = evt->u.btn.data; if (bmap[btn->button]) { if (btn->down) { s->buttons_state |= bmap[btn->button]; } else { s->buttons_state &= ~bmap[btn->button]; } } break; default: /* keep gcc happy */ break; } } static const QemuInputHandler adb_mouse_handler = { .name = "QEMU ADB Mouse", .mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL, .event = adb_mouse_handle_event, /* * We do not need the .sync handler because unlike e.g. PS/2 where async * mouse events are sent over the serial port, an ADB mouse is constantly * polled by the host via the adb_mouse_poll() callback. */ }; 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 & ADB_MOUSE_BUTTON_LEFT)) { dy |= 0x80; } if (!(s->buttons_state & ADB_MOUSE_BUTTON_RIGHT)) { 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; trace_adb_device_mouse_flush(); return 0; } cmd = buf[0] & 0xc; reg = buf[0] & 0x3; olen = 0; switch (cmd) { case ADB_WRITEREG: trace_adb_device_mouse_writereg(reg, buf[1]); switch (reg) { case 2: break; case 3: /* * MacOS 9 has a bug in its ADB driver whereby after configuring * the ADB bus devices it sends another write of invalid length * to reg 3. Make sure we ignore it to prevent an address clash * with the previous device. */ if (len != 3) { return 0; } 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; trace_adb_device_mouse_request_change_addr(d->devaddr); break; default: d->devaddr = buf[1] & 0xf; /* * we support handlers: * 0x01: Classic Apple Mouse Protocol / 100 cpi operations * 0x02: Classic Apple Mouse Protocol / 200 cpi operations * we don't support handlers (at least): * 0x03: Mouse systems A3 trackball * 0x04: Extended Apple Mouse Protocol * 0x2f: Microspeed mouse * 0x42: Macally * 0x5f: Microspeed mouse * 0x66: Microspeed mouse */ if (buf[2] == 1 || buf[2] == 2) { d->handler = buf[2]; } trace_adb_device_mouse_request_change_addr_and_handler( d->devaddr, d->handler); break; } } break; case ADB_READREG: switch (reg) { case 0: olen = adb_mouse_poll(d, obuf); break; case 1: break; case 3: obuf[0] = d->devaddr; obuf[1] = d->handler; olen = 2; break; } trace_adb_device_mouse_readreg(reg, obuf[0], obuf[1]); break; } return olen; } static bool adb_mouse_has_data(ADBDevice *d) { MouseState *s = ADB_MOUSE(d); return !(s->last_buttons_state == s->buttons_state && s->dx == 0 && s->dy == 0); } 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 = (const 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); s->hs = qemu_input_handler_register(dev, &adb_mouse_handler); } 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); device_class_set_parent_realize(dc, adb_mouse_realizefn, &amc->parent_realize); set_bit(DEVICE_CATEGORY_INPUT, dc->categories); adc->devreq = adb_mouse_request; adc->devhasdata = adb_mouse_has_data; device_class_set_legacy_reset(dc, 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_mouse_register_types(void) { type_register_static(&adb_mouse_type_info); } type_init(adb_mouse_register_types)