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/*
* Copyright (C) 2002 Emmanuel VARAGNAT <hddtemp@guzu.net>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
// Include file generated by ./configure
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
// Gettext includes
#if ENABLE_NLS
#include <libintl.h>
#define _(String) gettext (String)
#else
#define _(String) (String)
#endif
// Standard includes
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <scsi/scsi.h>
#include <linux/hdreg.h>
// Application specific includes
#include "hddtemp.h"
#include "satacmds.h"
#include "scsicmds.h"
#define swapb(x) \
({ \
u16 __x = (x); \
(x) = ((u16)( \
(((u16)(__x) & (u16)0x00ffU) << 8) | \
(((u16)(__x) & (u16)0xff00U) >> 8) )); \
})
static int sata_probe(int device) {
int bus_num;
unsigned char cmd[4] = { WIN_IDENTIFY, 0, 0, 1 };
unsigned char identify[512];
char buf[36]; /* should be 36 for unsafe devices (like USB mass storage stuff)
otherwise they can lock up! SPC sections 7.4 and 8.6 */
/* SATA disks are difficult to detect as they answer to both ATA and SCSI
commands */
/* First check that the device is accessible through SCSI */
if(ioctl(device, SCSI_IOCTL_GET_BUS_NUMBER, &bus_num))
return 0;
/* Get SCSI name and verify it starts with "ATA " */
if (scsi_inquiry(device, buf))
return 0;
else if (strncmp(buf + 8, "ATA ", 4))
return 0;
/* Verify that it supports ATA pass thru */
if (sata_pass_thru(device, cmd, identify) != 0)
return 0;
else
return 1;
}
static const char *sata_model (int device) {
unsigned char cmd[4] = { WIN_IDENTIFY, 0, 0, 1 };
unsigned char identify[512];
if(device == -1 || sata_pass_thru(device, cmd, identify))
return strdup(_("unknown"));
else
{
sata_fixstring(identify + 54, 24);
return strdup(identify + 54);
}
}
static unsigned char* sata_search_temperature(const unsigned char* smart_data, int attribute_id) {
int i, n;
n = 3;
i = 0;
while((debug || *(smart_data + n) != attribute_id) && i < 30) {
if(debug && *(smart_data + n))
printf(_("field(%d)\t = %d\n"), *(smart_data + n), *(smart_data + n + 3));
n += 12;
i++;
}
if(i >= 30)
return NULL;
else
return (unsigned char*)(smart_data + n);
}
static enum e_gettemp sata_get_temperature(struct disk *dsk) {
unsigned char values[512];
unsigned char * field;
int i;
u16 * p;
if(dsk->db_entry->attribute_id == 0) {
close(dsk->fd);
dsk->fd = -1;
return GETTEMP_NOSENSOR;
}
switch(ata_get_powermode(dsk->fd)) {
case PWM_STANDBY:
case PWM_SLEEPING:
if (!wakeup)
return GETTEMP_DRIVE_SLEEP;
case PWM_UNKNOWN:
case PWM_ACTIVE: /* active or idle */
default:
break;
}
/* get SMART values */
if(sata_enable_smart(dsk->fd) != 0) {
enum e_gettemp ret;
if(errno == EIO) {
snprintf(dsk->errormsg, MAX_ERRORMSG_SIZE, _("S.M.A.R.T. not available"));
ret = GETTEMP_NOT_APPLICABLE;
}
else
{
snprintf(dsk->errormsg, MAX_ERRORMSG_SIZE, "%s", strerror(errno));
ret = GETTEMP_ERROR;
}
close(dsk->fd);
dsk->fd = -1;
return ret;
}
if(sata_get_smart_values(dsk->fd, values)) {
snprintf(dsk->errormsg, MAX_ERRORMSG_SIZE, "%s", strerror(errno));
close(dsk->fd);
dsk->fd = -1;
return GETTEMP_ERROR;
}
p = (u16*)values;
for(i = 0; i < 256; i++) {
swapb(*(p+i));
}
/* temperature */
field = sata_search_temperature(values, dsk->db_entry->attribute_id);
if(field)
dsk->value = *(field+3);
if(dsk->db_entry && dsk->value != -1)
return GETTEMP_KNOWN;
else
return GETTEMP_UNKNOWN;
/* never reached */
}
/*******************************
*******************************/
struct bustype sata_bus = {
"SATA",
sata_probe,
sata_model,
sata_get_temperature
};
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