| /* |
| * Copyright (c) 2010, 2017-2018 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Copyright (c) 2005 The Regents of The University of Michigan |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * 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; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * 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 |
| * OWNER 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. |
| */ |
| |
| #include "dev/ps2/touchkit.hh" |
| |
| #include <cstdint> |
| |
| #include "base/logging.hh" |
| #include "base/trace.hh" |
| #include "debug/PS2.hh" |
| #include "dev/ps2/mouse.hh" |
| #include "dev/ps2/types.hh" |
| #include "params/PS2TouchKit.hh" |
| |
| namespace ps2 |
| { |
| |
| TouchKit::TouchKit(const PS2TouchKitParams &p) |
| : Device(p), |
| vnc(p.vnc), |
| enabled(false), touchKitEnabled(false) |
| { |
| if (vnc) |
| vnc->setMouse(this); |
| } |
| |
| void |
| TouchKit::serialize(CheckpointOut &cp) const |
| { |
| Device::serialize(cp); |
| |
| SERIALIZE_SCALAR(enabled); |
| SERIALIZE_SCALAR(touchKitEnabled); |
| } |
| |
| void |
| TouchKit::unserialize(CheckpointIn &cp) |
| { |
| Device::unserialize(cp); |
| |
| UNSERIALIZE_SCALAR(enabled); |
| UNSERIALIZE_SCALAR(touchKitEnabled); |
| } |
| |
| bool |
| TouchKit::recv(const std::vector<uint8_t> &data) |
| { |
| switch (data[0]) { |
| case Reset: |
| DPRINTF(PS2, "Resetting device.\n"); |
| enabled = false; |
| touchKitEnabled = false; |
| sendAck(); |
| send(SelfTestPass); |
| return true; |
| |
| case ReadID: |
| sendAck(); |
| send(mouse::ID); |
| return true; |
| |
| case Disable: |
| DPRINTF(PS2, "Disabling device.\n"); |
| enabled = false; |
| sendAck(); |
| return true; |
| |
| case Enable: |
| DPRINTF(PS2, "Enabling device.\n"); |
| enabled = true; |
| sendAck(); |
| return true; |
| |
| case DefaultsAndDisable: |
| DPRINTF(PS2, "Setting defaults and disabling device.\n"); |
| enabled = false; |
| sendAck(); |
| return true; |
| |
| case mouse::Scale1to1: |
| case mouse::Scale2to1: |
| sendAck(); |
| return true; |
| |
| case mouse::SetResolution: |
| case mouse::SampleRate: |
| sendAck(); |
| return data.size() == 2; |
| |
| case mouse::GetStatus: |
| sendAck(); |
| send(0); |
| send(2); // default resolution |
| send(100); // default sample rate |
| return true; |
| |
| case TpReadId: |
| // We're not a trackpoint device, this should make the probe |
| // go away |
| sendAck(); |
| send(0); |
| send(0); |
| sendAck(); |
| return true; |
| |
| case TouchKitDiag: |
| return recvTouchKit(data); |
| |
| default: |
| panic("Unknown byte received: %#x\n", data[0]); |
| } |
| } |
| |
| bool |
| TouchKit::recvTouchKit(const std::vector<uint8_t> &data) |
| { |
| // Ack all incoming bytes |
| sendAck(); |
| |
| // Packet format is: 0x0A SIZE CMD DATA |
| assert(data[0] == TouchKitDiag); |
| if (data.size() < 3 || data.size() - 2 < data[1]) |
| return false; |
| |
| const uint8_t len = data[1]; |
| const uint8_t cmd = data[2]; |
| |
| // We have received at least one TouchKit diagnostic |
| // command. Enabled TouchKit reports. |
| touchKitEnabled = true; |
| |
| |
| switch (cmd) { |
| case TouchKitActive: |
| warn_if(len != 1, "Unexpected activate packet length: %u\n", len); |
| sendTouchKit('A'); |
| return true; |
| |
| default: |
| panic("Unimplemented touchscreen command: %#x\n", cmd); |
| } |
| } |
| |
| void |
| TouchKit::sendTouchKit(const uint8_t *data, size_t size) |
| { |
| send(TouchKitDiag); |
| send(size); |
| for (int i = 0; i < size; ++i) |
| send(data[i]); |
| } |
| |
| |
| void |
| TouchKit::mouseAt(uint16_t x, uint16_t y, uint8_t buttons) |
| { |
| // If the driver hasn't initialized the device yet, no need to try and send |
| // it anything. Similarly we can get vnc mouse events orders of magnitude |
| // faster than m5 can process them. Only queue up two sets mouse movements |
| // and don't add more until those are processed. |
| if (!enabled || !touchKitEnabled || sendPending() > 10) |
| return; |
| |
| // Convert screen coordinates to touchpad coordinates |
| const uint16_t _x = (2047.0 / vnc->videoWidth()) * x; |
| const uint16_t _y = (2047.0 / vnc->videoHeight()) * y; |
| |
| const uint8_t resp[] = { |
| buttons, |
| (uint8_t)(_x >> 7), (uint8_t)(_x & 0x7f), |
| (uint8_t)(_y >> 7), (uint8_t)(_y & 0x7f), |
| }; |
| |
| send(resp, sizeof(resp)); |
| } |
| |
| } // namespace ps2 |