From e9d91175c49951d873e93ab96d38612e947c3130 Mon Sep 17 00:00:00 2001 From: Maxim Poliakovski Date: Wed, 26 Jul 2023 04:29:08 +0200 Subject: [PATCH] Add AdbBus class and device. --- devices/common/adb/adbbus.cpp | 94 +++++++++++++++++++++++++++++++++++ devices/common/adb/adbbus.h | 75 ++++++++++++++++++++++++++++ 2 files changed, 169 insertions(+) create mode 100644 devices/common/adb/adbbus.cpp create mode 100644 devices/common/adb/adbbus.h diff --git a/devices/common/adb/adbbus.cpp b/devices/common/adb/adbbus.cpp new file mode 100644 index 0000000..4899439 --- /dev/null +++ b/devices/common/adb/adbbus.cpp @@ -0,0 +1,94 @@ +/* +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 . +*/ + +/** @file Apple Desktop Bus emulation. */ + +#include +#include +#include + +AdbBus::AdbBus(std::string name) { + this->set_name(name); + supports_types(HWCompType::ADB_HOST); + this->devices.clear(); +} + +void AdbBus::register_device(AdbDevice* dev_obj) { + this->devices.push_back(dev_obj); +} + +uint8_t AdbBus::process_command(const uint8_t* in_data, int data_size) { + uint8_t dev_addr, dev_reg; + + this->output_count = 0; + + if (!data_size) + return ADB_STAT_OK; + + uint8_t cmd_byte = in_data[0]; + uint8_t cmd = cmd_byte & 0xF; + + if(!cmd) { // SendReset + LOG_F(9, "%s: SendReset issued", this->name.c_str()); + for (auto dev : this->devices) + dev->reset(); + } else if (cmd == 1) { // Flush + dev_addr = cmd_byte >> 4; + + LOG_F(9, "%s: Flush issued, dev_addr=0x%X", this->name.c_str(), dev_addr); + } else if ((cmd & 0xC) == 8) { // Listen + dev_addr = cmd_byte >> 4; + dev_reg = cmd_byte & 3; + + LOG_F(9, "%s: Listen R%d issued, dev_addr=0x%X", this->name.c_str(), + dev_reg, dev_addr); + + this->input_buf = in_data + 1; + this->input_count = data_size - 1; + + for (auto dev : this->devices) + dev->listen(dev_addr, dev_reg); + } else if ((cmd & 0xC) == 0xC) { // Talk + dev_addr = cmd_byte >> 4; + dev_reg = cmd_byte & 3; + + LOG_F(9, "%s: Talk R%d issued, dev_addr=0x%X", this->name.c_str(), + dev_reg, dev_addr); + + this->got_answer = false; + + for (auto dev : this->devices) + this->got_answer = dev->talk(dev_addr, dev_reg); + + if (!this->got_answer) + return ADB_STAT_TIMEOUT; + } else { + ABORT_F("%s: unsupported ADB command 0x%X", this->name.c_str(), cmd_byte); + } + + return ADB_STAT_OK; +} + +static const DeviceDescription AdbBus_Descriptor = { + AdbBus::create, {}, {} +}; + +REGISTER_DEVICE(AdbBus, AdbBus_Descriptor); diff --git a/devices/common/adb/adbbus.h b/devices/common/adb/adbbus.h new file mode 100644 index 0000000..ae311d1 --- /dev/null +++ b/devices/common/adb/adbbus.h @@ -0,0 +1,75 @@ +/* +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 . +*/ + +/** @file Apple Desktop Bus definitions. */ + +#ifndef ADB_BUS_H +#define ADB_BUS_H + +#include +#include + +#include +#include +#include + +#define ADB_MAX_DATA_SIZE 8 + +/** ADB status. */ +enum { + ADB_STAT_OK = 0, + ADB_STAT_SRQ_ACTIVE = 1 << 0, + ADB_STAT_TIMEOUT = 1 << 1, +}; + +class AdbDevice; // forward declaration to prevent compiler errors + +class AdbBus : public HWComponent { +public: + AdbBus(std::string name); + ~AdbBus() = default; + + static std::unique_ptr create() { + return std::unique_ptr(new AdbBus("ADB-BUS")); + } + + 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; }; + + // 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 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