110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-23 divingkatae and maximum
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(theweirdo) spatium
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(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/** @file Apple Desktop Bus emulation. */
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#include <devices/common/adb/adbbus.h>
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#include <devices/common/adb/adbdevice.h>
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#include <devices/deviceregistry.h>
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#include <loguru.hpp>
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AdbBus::AdbBus(std::string name) {
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this->set_name(name);
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supports_types(HWCompType::ADB_HOST);
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this->devices.clear();
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}
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void AdbBus::register_device(AdbDevice* dev_obj) {
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this->devices.push_back(dev_obj);
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}
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uint8_t AdbBus::poll() {
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for (auto dev : this->devices) {
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uint8_t dev_poll = dev->poll();
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if (dev_poll) {
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return dev_poll;
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}
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}
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return 0;
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}
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uint8_t AdbBus::process_command(const uint8_t* in_data, int data_size) {
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uint8_t dev_addr, dev_reg;
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this->output_count = 0;
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if (!data_size)
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return ADB_STAT_OK;
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uint8_t cmd_byte = in_data[0];
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uint8_t cmd = cmd_byte & 0xF;
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if(!cmd) { // SendReset
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LOG_F(9, "%s: SendReset issued", this->name.c_str());
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for (auto dev : this->devices)
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dev->reset();
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} else if (cmd == 1) { // Flush
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dev_addr = cmd_byte >> 4;
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LOG_F(9, "%s: Flush issued, dev_addr=0x%X", this->name.c_str(), dev_addr);
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} else if ((cmd & 0xC) == 8) { // Listen
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dev_addr = cmd_byte >> 4;
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dev_reg = cmd_byte & 3;
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LOG_F(9, "%s: Listen R%d issued, dev_addr=0x%X", this->name.c_str(),
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dev_reg, dev_addr);
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this->input_buf = in_data + 1;
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this->input_count = data_size - 1;
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for (auto dev : this->devices)
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dev->listen(dev_addr, dev_reg);
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} else if ((cmd & 0xC) == 0xC) { // Talk
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dev_addr = cmd_byte >> 4;
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dev_reg = cmd_byte & 3;
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LOG_F(9, "%s: Talk R%d issued, dev_addr=0x%X", this->name.c_str(),
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dev_reg, dev_addr);
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this->got_answer = false;
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for (auto dev : this->devices) {
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this->got_answer = dev->talk(dev_addr, dev_reg);
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if (this->got_answer) {
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break;
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}
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}
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if (!this->got_answer)
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return ADB_STAT_TIMEOUT;
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} else {
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LOG_F(ERROR, "%s: unsupported ADB command 0x%X", this->name.c_str(), cmd_byte);
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}
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return ADB_STAT_OK;
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}
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static const DeviceDescription AdbBus_Descriptor = {
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AdbBus::create, {}, {}
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};
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REGISTER_DEVICE(AdbBus, AdbBus_Descriptor);
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