dingusppc/devices/common/adb/adbbus.h
Keith Kaisershot 6696248158 adbbus: decouple ADB devices from CUDA
AdbMouse and AdbKeyboard are subdevices of the CUDA device alongside AdbBus.
This doesn't make sense because conceptually, ADB devices hang off of the ADB
bus, not CUDA itself. An ADB bus can exist without a CUDA present, for example
Egret on older 68K Macs and the PMU on newer Power Macs. Therefore, make the ADB
device list a subhierarchy of AdbBus instead. Add a new "adb_devices" property
belonging to AdbBus that can allow users to specify ADB devices on the command
line at machine creation time, independent of the emulated bus's host. Make this
property default to "Mouse,Keyboard" to preserve existing behavior.
2024-10-06 23:20:10 -07:00

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-23 divingkatae and maximum
(theweirdo) spatium
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
/** @file Apple Desktop Bus definitions. */
#ifndef ADB_BUS_H
#define ADB_BUS_H
#include <devices/common/hwcomponent.h>
#include <memory>
#include <string>
#include <vector>
#define ADB_MAX_DATA_SIZE 8
/** ADB status. */
enum {
ADB_STAT_OK = 0,
ADB_STAT_SRQ_ACTIVE = 1 << 0,
ADB_STAT_TIMEOUT = 1 << 1,
ADB_STAT_AUTOPOLL = 1 << 6,
};
class AdbDevice; // forward declaration to prevent compiler errors
class AdbBus : public HWComponent {
public:
AdbBus(std::string name);
~AdbBus() = default;
static std::unique_ptr<HWComponent> create() {
return std::unique_ptr<AdbBus>(new AdbBus("ADB-BUS"));
}
int device_postinit() override;
void register_device(AdbDevice* dev_obj);
uint8_t process_command(const uint8_t* in_data, int data_size);
uint8_t get_output_count() { return this->output_count; };
// Polls devices that have a service request flag set. Returns the talk
// command corresponding to the first device that responded with data, or
// 0 if no device responded.
uint8_t poll();
// callbacks meant to be called by devices
const uint8_t* get_input_buf() { return this->input_buf; };
uint8_t* get_output_buf() { return this->output_buf; };
uint8_t get_input_count() { return this->input_count; };
void set_output_count(uint8_t count) { this->output_count = count; };
bool already_answered() { return this->got_answer; };
private:
std::vector<AdbDevice*> devices;
bool got_answer = false;
const uint8_t* input_buf = nullptr;
uint8_t output_buf[ADB_MAX_DATA_SIZE] = {};
uint8_t input_count = 0;
uint8_t output_count = 0;
};
#endif // ADB_BUS_H