dingusppc/devices/common/ide/ide_hd.cpp

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/*
DingusPPC - The Experimental PowerPC Macintosh emulator
Copyright (C) 2018-22 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 Heathrow hard drive controller */
#include <devices/common/ide/ide_hd.h>
#include <fstream>
#include <limits>
#include <stdio.h>
#include <loguru.hpp>
#define sector_size 512
using namespace std;
IdeHardDisk::IdeHardDisk() {
this->name = "IDE0";
supports_types(HWCompType::IDE_DEV);
}
void IdeHardDisk::insert_image(std::string filename) {
hdd_img.open(filename);
// Taken from:
// https://stackoverflow.com/questions/22984956/tellg-function-give-wrong-size-of-file/22986486
hdd_img.ignore(std::numeric_limits<std::streamsize>::max());
img_size = this->hdd_img.gcount();
hdd_img.clear(); // Since ignore will have set eof.
hdd_img.seekg(0, std::ios_base::beg);
}
uint32_t IdeHardDisk::read(int reg) {
switch (reg) {
case IDE_Reg::IDE_DATA:
LOG_F(0, "Retrieving DATA from IDE: %x", regs[IDE_Reg::IDE_DATA]);
return regs[IDE_Reg::IDE_DATA];
case IDE_Reg::ERROR:
return regs[IDE_Reg::ERROR];
case IDE_Reg::SEC_COUNT:
return regs[IDE_Reg::SEC_COUNT];
case IDE_Reg::SEC_NUM:
return regs[IDE_Reg::SEC_NUM];
case IDE_Reg::CYL_LOW:
return regs[IDE_Reg::CYL_LOW];
case IDE_Reg::CYL_HIGH:
return regs[IDE_Reg::CYL_HIGH];
case IDE_Reg::DRIVE_HEAD:
return regs[IDE_Reg::DRIVE_HEAD];
case IDE_Reg::STATUS:
return regs[IDE_Reg::STATUS];
case IDE_Reg::ALT_STATUS:
return regs[IDE_Reg::ALT_STATUS];
case IDE_Reg::TIME_CONFIG:
return regs[IDE_Reg::TIME_CONFIG];
default:
LOG_F(WARNING, "Attempted to read unknown IDE register: %x", reg);
return 0x0;
}
}
void IdeHardDisk::write(int reg, uint32_t value) {
switch (reg) {
case IDE_Reg::IDE_DATA:
regs[IDE_Reg::IDE_DATA] = value;
case IDE_Reg::FEATURES:
regs[IDE_Reg::FEATURES] = value;
case IDE_Reg::SEC_COUNT:
regs[IDE_Reg::SEC_COUNT] = value;
case IDE_Reg::SEC_NUM:
regs[IDE_Reg::SEC_NUM] = value;
case IDE_Reg::CYL_LOW:
regs[IDE_Reg::CYL_LOW] = value;
case IDE_Reg::CYL_HIGH:
regs[IDE_Reg::CYL_HIGH] = value;
case IDE_Reg::DRIVE_HEAD:
regs[IDE_Reg::DRIVE_HEAD] = value;
case IDE_Reg::COMMAND:
LOG_F(0, "Executing COMMAND for IDE: %x", value);
perform_command(value);
case IDE_Reg::DEV_CTRL:
regs[IDE_Reg::DEV_CTRL] = value;
case IDE_Reg::TIME_CONFIG:
regs[IDE_Reg::TIME_CONFIG] = value;
default:
LOG_F(WARNING, "Attempted to write unknown IDE register: %x", reg);
}
}
void IdeHardDisk::perform_command(uint32_t command) {
switch (command) {
case IDE_Cmd::READ_SECTOR:
LOG_F(WARNING, "Trying to read sector with: %x", command);
case IDE_Cmd::WRITE_SECTOR:
LOG_F(WARNING, "Trying to write sector with: %x", command);
default:
LOG_F(WARNING, "Attempted to execute IDE command: %x", command);
}
}