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/* C:B**************************************************************************
This software is Copyright 2014-2017 Bright Plaza Inc. <drivetrust@drivetrust.com>
This file is part of sedutil.
sedutil 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.
sedutil 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 sedutil. If not, see <http://www.gnu.org/licenses/>.
* C:E********************************************************************** */
#include "os.h"
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <scsi/sg.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <linux/hdreg.h>
#include <errno.h>
#include <vector>
#include <fstream>
#include "DtaDevLinuxNvme.h"
#include "DtaHexDump.h"
#define NVME_SECURITY_SEND 0x81
#define NVME_SECURITY_RECV 0x82
#define NVME_IDENTIFY 0x06
using namespace std;
/** The Device class represents a single disk device.
* Linux specific implementation using the NVMe interface
*/
DtaDevLinuxNvme::DtaDevLinuxNvme() {}
bool DtaDevLinuxNvme::init(const char * devref)
{
LOG(D1) << "Creating DtaDevLinuxNvme::DtaDev() " << devref;
ifstream kopts;
bool isOpen = FALSE;
if ((fd = open(devref, O_RDWR)) < 0) {
isOpen = FALSE;
// This is a D1 because diskscan looks for open fail to end scan
LOG(D1) << "Error opening device " << devref << " " << (int32_t) fd;
if (-EPERM == fd) {
LOG(E) << "You do not have permission to access the raw disk in write mode";
LOG(E) << "Perhaps you might try sudo to run as root";
}
}
else {
isOpen = TRUE;
}
return isOpen;
}
/** Send an ioctl to the device using nvme admin commands. */
uint8_t DtaDevLinuxNvme::sendCmd(ATACOMMAND cmd, uint8_t protocol, uint16_t comID,
void * buffer, uint32_t bufferlen)
{
struct nvme_admin_cmd nvme_cmd;
int err;
LOG(D1) << "Entering DtaDevLinuxNvme::sendCmd";
memset(&nvme_cmd, 0, sizeof(nvme_cmd));
if (IF_RECV == cmd) {
LOG(D3) << "Security Receive Command";
nvme_cmd.opcode = NVME_SECURITY_RECV;
nvme_cmd.cdw10 = protocol << 24 | comID << 8;
nvme_cmd.cdw11 = bufferlen;
nvme_cmd.data_len = bufferlen;
nvme_cmd.addr = (__u64)buffer;
}
else {
LOG(D3) << "Security Send Command";
nvme_cmd.opcode = NVME_SECURITY_SEND;
nvme_cmd.cdw10 = protocol << 24 | comID << 8;
nvme_cmd.cdw11 = bufferlen;
nvme_cmd.data_len = bufferlen;
nvme_cmd.addr = (__u64)buffer;
}
err = ioctl(fd, NVME_IOCTL_ADMIN_CMD, &nvme_cmd);
if (err < 0)
return errno;
else if (err != 0) {
fprintf(stderr, "NVME Security Command Error:%d\n", err);
IFLOG(D4) DtaHexDump(&nvme_cmd, sizeof(nvme_cmd));
}
else
LOG(D3) << "NVME Security Command Success:" << nvme_cmd.result;
//LOG(D4) << "NVMe command:";
//IFLOG(D4) DtaHexDump(&nvme_cmd, sizeof(nvme_cmd));
//LOG(D4) << "NVMe buffer @ " << buffer;
//IFLOG(D4) DtaHexDump(buffer, bufferlen);
return err;
}
void DtaDevLinuxNvme::identify(OPAL_DiskInfo& disk_info)
{
LOG(D4) << "Entering DtaDevLinuxNvme::identify()";
struct nvme_admin_cmd cmd;
uint8_t ctrl[4096];
int err;
memset(&cmd, 0, sizeof(cmd));
cmd.opcode = NVME_IDENTIFY;
cmd.nsid = 0;
cmd.addr = (unsigned long)&ctrl;
cmd.data_len = 4096;
cmd.cdw10 = 1;
err = ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd);
if (err) {
LOG(E) << "Identify error. NVMe status " << err;
disk_info.devType = DEVICE_TYPE_OTHER;
IFLOG(D4) DtaHexDump(&cmd, sizeof(cmd));
IFLOG(D4) DtaHexDump(&ctrl, sizeof(ctrl));
return;
}
disk_info.devType = DEVICE_TYPE_NVME;
uint8_t *results = ctrl;
results += 4;
memcpy(disk_info.serialNum, results, sizeof(disk_info.serialNum));
results += sizeof(disk_info.serialNum);
memcpy(disk_info.modelNum, results, sizeof(disk_info.modelNum));
results += sizeof(disk_info.modelNum);
memcpy(disk_info.firmwareRev, results, sizeof(disk_info.firmwareRev));
return;
}
/** Close the device reference so this object can be delete. */
DtaDevLinuxNvme::~DtaDevLinuxNvme()
{
LOG(D1) << "Destroying DtaDevLinuxNvme";
close(fd);
}
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