mirror of
https://github.com/dingusdev/dingusppc.git
synced 2024-11-19 13:31:44 +00:00
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/*
|
|
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 <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file ATA hard disk emulation. */
|
|
|
|
#include <devices/common/ata/atahd.h>
|
|
|
|
#include <cstring>
|
|
#include <sys/stat.h>
|
|
#include <fstream>
|
|
#include <string>
|
|
#include <loguru.hpp>
|
|
|
|
using namespace ata_interface;
|
|
|
|
AtaHardDisk::AtaHardDisk() : AtaBaseDevice("ATA-HD", DEVICE_TYPE_ATA) {
|
|
}
|
|
|
|
void AtaHardDisk::insert_image(std::string filename) {
|
|
this->hdd_img.open(filename, std::fstream::out | std::fstream::in | std::fstream::binary);
|
|
|
|
struct stat stat_buf;
|
|
int rc = stat(filename.c_str(), &stat_buf);
|
|
if (!rc) {
|
|
this->img_size = stat_buf.st_size;
|
|
} else {
|
|
ABORT_F("AtaHardDisk: could not determine file size using stat()");
|
|
}
|
|
this->hdd_img.seekg(0, std::ios_base::beg);
|
|
}
|
|
|
|
int AtaHardDisk::perform_command()
|
|
{
|
|
LOG_F(INFO, "%s: command 0x%x requested", this->name.c_str(), this->r_command);
|
|
this->r_status |= BSY;
|
|
this->r_status &= ~DRDY;
|
|
switch (this->r_command) {
|
|
case NOP:
|
|
break;
|
|
case RECALIBRATE:
|
|
hdd_img.seekg(0, std::ios::beg);
|
|
this->r_error = 0;
|
|
this->r_cylinder_lo = 0;
|
|
this->r_cylinder_hi = 0;
|
|
break;
|
|
case READ_SECTOR:
|
|
case READ_SECTOR_NR: {
|
|
this->r_status |= DRQ;
|
|
uint16_t sec_count = (this->r_sect_count == 0) ? 256 : this->r_sect_count;
|
|
uint32_t sector = (r_sect_num << 16);
|
|
sector |= ((this->r_cylinder_lo) << 8) + (this->r_cylinder_hi);
|
|
uint64_t offset = sector * ATA_HD_SEC_SIZE;
|
|
hdd_img.seekg(offset, std::ios::beg);
|
|
hdd_img.read(buffer, sec_count * ATA_HD_SEC_SIZE);
|
|
this->r_status &= ~DRQ;
|
|
}
|
|
break;
|
|
case WRITE_SECTOR:
|
|
case WRITE_SECTOR_NR: {
|
|
this->r_status |= DRQ;
|
|
uint16_t sec_count = (this->r_sect_count == 0) ? 256 : this->r_sect_count;
|
|
uint32_t sector = (r_sect_num << 16);
|
|
sector |= ((this->r_cylinder_lo) << 8) + (this->r_cylinder_hi);
|
|
uint64_t offset = sector * ATA_HD_SEC_SIZE;
|
|
hdd_img.seekg(offset, std::ios::beg);
|
|
hdd_img.write(buffer, sec_count * ATA_HD_SEC_SIZE);
|
|
this->r_status &= ~DRQ;
|
|
}
|
|
break;
|
|
case INIT_DEV_PARAM:
|
|
break;
|
|
case DIAGNOSTICS: {
|
|
this->r_status |= DRQ;
|
|
int ret_code = this->r_error;
|
|
this->r_status &= ~DRQ;
|
|
return ret_code;
|
|
}
|
|
break;
|
|
case IDENTIFY_DEVICE:
|
|
this->r_status |= DRQ;
|
|
std::memcpy(buffer, this->hd_id_data, ATA_HD_SEC_SIZE);
|
|
this->r_status &= ~DRQ;
|
|
break;
|
|
default:
|
|
LOG_F(ERROR, "%s: unknown ATA command 0x%x", this->name.c_str(), this->r_command);
|
|
this->r_status &= ~BSY;
|
|
this->r_status |= ERR;
|
|
return -1;
|
|
}
|
|
this->r_status &= ~BSY;
|
|
this->r_status |= DRDY;
|
|
return 0;
|
|
}
|