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smartmontools/smartmontools/dev_ata_cmd_set.cpp

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/*
* dev_ata_cmd_set.cpp
*
* Home page of code is: http://www.smartmontools.org
*
* Copyright (C) 2008-18 Christian Franke
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include "atacmds.h"
#include "dev_ata_cmd_set.h"
#include <errno.h>
const char * dev_ata_cmd_set_cpp_cvsid = "$Id$"
DEV_ATA_CMD_SET_H_CVSID;
/////////////////////////////////////////////////////////////////////////////
// ata_device_with_command_set
// Adapter routine to implement new ATA pass through with old interface
bool ata_device_with_command_set::ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out)
{
if (!ata_cmd_is_ok(in, true)) // data_out_support
return false;
smart_command_set command = (smart_command_set)-1;
int select = 0;
char * data = (char *)in.buffer;
char buffer[512];
switch (in.in_regs.command) {
case ATA_IDENTIFY_DEVICE:
command = IDENTIFY;
break;
case ATA_IDENTIFY_PACKET_DEVICE:
command = PIDENTIFY;
break;
case ATA_CHECK_POWER_MODE:
command = CHECK_POWER_MODE;
data = buffer; data[0] = 0;
break;
case ATA_SMART_CMD:
switch (in.in_regs.features) {
case ATA_SMART_ENABLE:
command = ENABLE;
break;
case ATA_SMART_READ_VALUES:
command = READ_VALUES;
break;
case ATA_SMART_READ_THRESHOLDS:
command = READ_THRESHOLDS;
break;
case ATA_SMART_READ_LOG_SECTOR:
command = READ_LOG;
select = in.in_regs.lba_low;
break;
case ATA_SMART_WRITE_LOG_SECTOR:
command = WRITE_LOG;
select = in.in_regs.lba_low;
break;
case ATA_SMART_DISABLE:
command = DISABLE;
break;
case ATA_SMART_STATUS:
command = (in.out_needed.lba_high ? STATUS_CHECK : STATUS);
break;
case ATA_SMART_AUTO_OFFLINE:
command = AUTO_OFFLINE;
select = in.in_regs.sector_count;
break;
case ATA_SMART_AUTOSAVE:
command = AUTOSAVE;
select = in.in_regs.sector_count;
break;
case ATA_SMART_IMMEDIATE_OFFLINE:
command = IMMEDIATE_OFFLINE;
select = in.in_regs.lba_low;
break;
default:
return set_err(ENOSYS, "Unknown SMART command");
}
break;
default:
return set_err(ENOSYS, "Non-SMART commands not implemented");
}
clear_err(); errno = 0;
int rc = ata_command_interface(command, select, data);
if (rc < 0) {
if (!get_errno())
set_err(errno);
return false;
}
switch (command) {
case CHECK_POWER_MODE:
out.out_regs.sector_count = data[0];
break;
case STATUS_CHECK:
switch (rc) {
case 0: // Good SMART status
out.out_regs.lba_high = 0xc2; out.out_regs.lba_mid = 0x4f;
break;
case 1: // Bad SMART status
out.out_regs.lba_high = 0x2c; out.out_regs.lba_mid = 0xf4;
break;
}
break;
default:
break;
}
return true;
}