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https://github.com/dingusdev/dingusppc.git
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f5c91968a2
Now we got two classes: IdeChannel and MacioIdeChannel. The former models a generic IDE channel so it can be used elsewhere. The latter implements MacIO specific configuration register(s) and interrupt signaling.
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-24 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 IDE Channel (aka IDE port) definitions. */
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#ifndef IDE_CHANNEL_H
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#define IDE_CHANNEL_H
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#include <devices/common/ata/atadefs.h>
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#include <devices/common/hwcomponent.h>
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#include <devices/common/hwinterrupt.h>
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#include <cinttypes>
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#include <functional>
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#include <memory>
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#include <string>
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class IdeChannel : public HWComponent
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{
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public:
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IdeChannel(const std::string name);
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~IdeChannel() = default;
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void register_device(int id, AtaInterface* dev_obj);
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uint32_t read(const uint8_t reg_addr, const int size);
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void write(const uint8_t reg_addr, const uint32_t val, const int size);
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void assert_pdiag() {
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this->devices[0]->pdiag_callback();
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}
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bool is_device1_present() {
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return this->devices[1]->get_device_id() != ata_interface::DEVICE_ID_INVALID;
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}
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void set_irq_callback(std::function<void(const uint8_t intrq_state)> cb) {
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this->irq_callback = cb;
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}
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void report_intrq(uint8_t intrq_state) {
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this->irq_callback(intrq_state);
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}
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protected:
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std::function<void(const uint8_t intrq_state)> irq_callback = nullptr;
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private:
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int cur_dev = 0;
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AtaInterface* devices[2];
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std::unique_ptr<AtaInterface> device_stub;
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};
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/** This class models an IDE channel specific to MacIO ASICs. */
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class MacioIdeChannel : public IdeChannel
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{
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public:
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MacioIdeChannel(const std::string name) : IdeChannel(name) {};
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~MacioIdeChannel() = default;
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static std::unique_ptr<HWComponent> create_first() {
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return std::unique_ptr<IdeChannel>(new MacioIdeChannel("IDE0"));
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}
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static std::unique_ptr<HWComponent> create_second() {
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return std::unique_ptr<IdeChannel>(new MacioIdeChannel("IDE1"));
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}
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int device_postinit() override;
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uint32_t read(const uint8_t reg_addr, const int size);
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void write(const uint8_t reg_addr, const uint32_t val, const int size);
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private:
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uint32_t ch_config = 0; // timing configuration for this channel
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// interrupt stuff
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InterruptCtrl* int_ctrl = nullptr;
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uint32_t irq_id = 0;
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};
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#endif // IDE_CHANNEL_H
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