mirror of
https://github.com/dingusdev/dingusppc.git
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104 lines
2.7 KiB
C++
104 lines
2.7 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 ATA hard drive support */
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#ifndef IDE_HD_H
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#define IDE_HD_H
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#include <devices/common/hwcomponent.h>
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#include <cinttypes>
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#include <fstream>
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#include <memory>
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#include <stdio.h>
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#include <string>
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#define SEC_SIZE 512
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using namespace std;
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/** IDE register offsets. */
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enum IDE_Reg : int {
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IDE_DATA = 0x0,
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ERROR = 0x1, // error (read)
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FEATURES = 0x1, // features (write)
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SEC_COUNT = 0x2, // sector count
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SEC_NUM = 0x3, // sector number
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CYL_LOW = 0x4, // cylinder low
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CYL_HIGH = 0x5, // cylinder high
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DRIVE_HEAD = 0x6, // drive/head
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STATUS = 0x7, // status (read)
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COMMAND = 0x7, // command (write)
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ALT_STATUS = 0x16, // alt status (read)
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DEV_CTRL = 0x16, // device control (write)
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TIME_CONFIG = 0x20
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};
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enum IDE_Status : int {
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ERR = 0x1,
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IDX = 0x2,
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CORR = 0x4,
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DRQ = 0x8,
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DSC = 0x10,
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DWF = 0x20,
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DRDY = 0x40,
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BSY = 0x80
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};
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/** Heath IDE commands. */
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enum IDE_Cmd : int {
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IDE_NOP = 0x00,
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RESET_ATAPI = 0x08,
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RECALIBRATE = 0x10,
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READ_SECTOR = 0x20,
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READ_LONG = 0x22,
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WRITE_SECTOR = 0x30,
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WRITE_LONG = 0x32,
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WRITE_VERIFY = 0x40,
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FORMAT_TRACKS = 0x50,
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DIAGNOSTICS = 0x90,
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READ_DMA = 0xC8,
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WRITE_DMA = 0xCA,
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};
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class IdeHardDisk : public HWComponent {
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public:
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IdeHardDisk();
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~IdeHardDisk() = default;
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static std::unique_ptr<HWComponent> create() {
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return std::unique_ptr<IdeHardDisk>(new IdeHardDisk());
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}
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void insert_image(std::string filename);
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uint32_t read(int reg);
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void write(int reg, uint32_t value);
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void perform_command(uint32_t command);
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private:
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std::fstream hdd_img;
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uint64_t img_size;
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uint32_t regs[33];
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uint8_t buffer[SEC_SIZE];
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};
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#endif |