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/*
* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Optional.h>
#include <AK/Types.h>
#include <AK/kmalloc.h>
#include <Kernel/API/MousePacket.h>
namespace Kernel {
#define VMMOUSE_GETVERSION 10
#define VMMOUSE_DATA 39
#define VMMOUSE_STATUS 40
#define VMMOUSE_COMMAND 41
struct VMWareCommand {
union {
u32 ax;
u32 magic;
};
union {
u32 bx;
u32 size;
};
union {
u32 cx;
u32 command;
};
union {
u32 dx;
u32 port;
};
u32 si;
u32 di;
};
class VMWareBackdoor {
AK_MAKE_ETERNAL;
public:
VMWareBackdoor();
static VMWareBackdoor* the();
bool vmmouse_is_absolute() const;
void enable_absolute_vmmouse();
void disable_absolute_vmmouse();
void send(VMWareCommand& command);
Optional<MousePacket> receive_mouse_packet();
private:
void send_high_bandwidth(VMWareCommand& command);
void get_high_bandwidth(VMWareCommand& command);
bool detect_vmmouse();
bool m_vmmouse_absolute { false };
};
}
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