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Start ATA command support

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This commit is contained in:
dingusdev 2022-12-08 15:29:04 -07:00
parent 2537751fa7
commit 1e9ec5d7ae
4 changed files with 84 additions and 13 deletions
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44
devices/common/ata/atadefs.h
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@ -69,20 +69,38 @@ enum IDE_Error : int {
BBK = 0x80
};
/** ATA commands. */
/* ATA Signals */
enum IDE_Signal : int {
PDIAG = 0x22,
DASP = 0x27
};
/* ATA commands. */
enum IDE_Cmd : int {
NOP = 0x00,
RESET_ATAPI = 0x08,
RECALIBRATE = 0x10,
READ_SECTOR = 0x20,
READ_LONG = 0x22,
WRITE_SECTOR = 0x30,
WRITE_LONG = 0x32,
WRITE_VERIFY = 0x40,
FORMAT_TRACKS = 0x50,
DIAGNOSTICS = 0x90,
READ_DMA = 0xC8,
WRITE_DMA = 0xCA,
NOP = 0x00,
RESET_ATAPI = 0x08,
RECALIBRATE = 0x10,
READ_SECTOR = 0x20,
READ_SECTOR_NR = 0x21,
READ_LONG = 0x22,
READ_SECTOR_EXT = 0x24,
WRITE_SECTOR = 0x30,
WRITE_SECTOR_NR = 0x21,
WRITE_LONG = 0x32,
READ_VERIFY = 0x40,
FORMAT_TRACKS = 0x50,
IDE_SEEK = 0x70,
DIAGNOSTICS = 0x90,
INIT_DEV_PARAM = 0x91,
PACKET = 0xA0,
IDFY_PKT_DEV = 0xA1,
READ_MULTIPLE = 0xC4,
WRITE_MULTIPLE = 0xC5,
READ_DMA = 0xC8,
WRITE_DMA = 0xCA,
WRITE_BUFFER_DMA = 0xE9,
READ_BUFFER_DMA = 0xEB,
IDENTIFY_DEVICE = 0xEC,
};
}; // namespace ata_interface

44
devices/common/ata/atahd.cpp
View File

@ -22,14 +22,58 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
/** @file ATA hard disk emulation. */
#include <devices/common/ata/atahd.h>
#include <sys/stat.h>
#include <fstream>
#include <string>
#include <loguru.hpp>
using namespace ata_interface;
AtaHardDisk::AtaHardDisk() : AtaBaseDevice("ATA-HD")
{
}
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("ScsiHardDisk: 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;
switch (this->r_command) {
case NOP:
break;
case RESET_ATAPI: {
device_reset();
break;
}
case READ_SECTOR:
case READ_SECTOR_NR: {
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 * 512;
hdd_img.seekg(offset, std::ios::beg);
hdd_img.read(buffer, sec_count * 512);
break;
}
case DIAGNOSTICS:
break;
default:
LOG_F(INFO, "Unknown ATA command 0x%x", this->r_command);
this->r_status |= ERR;
}
this->r_status &= ~(BSY);
this->r_status |= DRDY;
return -1;
}

8
devices/common/ata/atahd.h
View File

@ -25,6 +25,8 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
#define ATA_HARD_DISK_H
#include <devices/common/ata/atabasedevice.h>
#include <string>
#include <fstream>
class AtaHardDisk : public AtaBaseDevice
{
@ -32,7 +34,13 @@ public:
AtaHardDisk();
~AtaHardDisk() = default;
void insert_image(std::string filename);
int perform_command();
private:
std::fstream hdd_img;
uint64_t img_size;
char * buffer = new char[1 <<17];
};
#endif // ATA_HARD_DISK_H

1
devices/common/ata/idechannel.h
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@ -47,6 +47,7 @@ public:
uint16_t read(const uint8_t reg_addr, const int size);
void write(const uint8_t reg_addr, const uint16_t val, const int size);
//void talk_to_channel(std::string name)
private:
int cur_dev = 0;