mirror of
https://github.com/dingusdev/dingusppc.git
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120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/*
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DingusPPC - The Experimental PowerPC Macintosh emulator
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Copyright (C) 2018-22 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 Heathrow hard drive controller */
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#include <devices/common/ata/atabasedevice.h>
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#include <devices/common/ata/atadefs.h>
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#include <devices/deviceregistry.h>
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#include <loguru.hpp>
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#include <cinttypes>
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#define sector_size 512
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using namespace std;
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AtaBaseDevice::AtaBaseDevice(const std::string name)
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{
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this->set_name(name);
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supports_types(HWCompType::IDE_DEV);
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device_reset();
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}
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void AtaBaseDevice::device_reset()
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{
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this->r_error = 1; // Device 0 passed, Device 1 passed or not present
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this->r_sect_count = 1;
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this->r_sect_num = 1;
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// set ATA protocol signature
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this->r_cylinder_lo = 0;
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this->r_cylinder_hi = 0;
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this->r_status = IDE_Status::DRDY | IDE_Status::DSC;
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}
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uint16_t AtaBaseDevice::read(const uint8_t reg_addr) {
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switch (reg_addr) {
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case IDE_Reg::IDE_DATA:
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LOG_F(WARNING, "Retrieving data from %s", this->name.c_str());
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return 0xFFFFU;
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case IDE_Reg::ERROR:
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return this->r_error;
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case IDE_Reg::SEC_COUNT:
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return this->r_sect_count;
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case IDE_Reg::SEC_NUM:
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return this->r_sect_num;
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case IDE_Reg::CYL_LOW:
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return this->r_cylinder_lo;
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case IDE_Reg::CYL_HIGH:
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return this->r_cylinder_hi;
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case IDE_Reg::DEVICE_HEAD:
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return this->r_dev_head;
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case IDE_Reg::STATUS:
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// TODO: clear pending interrupt
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return this->r_status;
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case IDE_Reg::ALT_STATUS:
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return this->r_status;
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default:
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LOG_F(WARNING, "Attempted to read unknown IDE register: %x", reg_addr);
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return 0;
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}
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}
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void AtaBaseDevice::write(const uint8_t reg_addr, const uint16_t value) {
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switch (reg_addr) {
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case IDE_Reg::IDE_DATA:
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LOG_F(WARNING, "Pushing data to %s", this->name.c_str());
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break;
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case IDE_Reg::FEATURES:
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this->r_features = value;
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break;
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case IDE_Reg::SEC_COUNT:
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this->r_sect_count = value;
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break;
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case IDE_Reg::SEC_NUM:
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this->r_sect_num = value;
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break;
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case IDE_Reg::CYL_LOW:
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this->r_cylinder_lo = value;
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break;
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case IDE_Reg::CYL_HIGH:
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this->r_cylinder_hi = value;
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break;
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case IDE_Reg::DEVICE_HEAD:
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this->r_dev_head = value;
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break;
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case IDE_Reg::COMMAND:
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this->r_command = value;
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if (is_selected()) {
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perform_command();
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}
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break;
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case IDE_Reg::DEV_CTRL:
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this->r_dev_ctrl = value;
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break;
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default:
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LOG_F(WARNING, "Attempted to write unknown IDE register: %x", reg_addr);
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}
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}
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