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mirror_smartmontools-debian/os_linux.cpp
Guido Guenther a37e71455d Imported upstream version 5.38~cvs20071118
2007-11-19 13:17:31 +01:00

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/*
* os_linux.c
*
* Home page of code is: http://smartmontools.sourceforge.net
*
* Copyright (C) 2003-7 Bruce Allen <smartmontools-support@lists.sourceforge.net>
* Copyright (C) 2003-7 Doug Gilbert <dougg@torque.net>
*
* Parts of this file are derived from code that was
*
* Written By: Adam Radford <linux@3ware.com>
* Modifications By: Joel Jacobson <linux@3ware.com>
* Arnaldo Carvalho de Melo <acme@conectiva.com.br>
* Brad Strand <linux@3ware.com>
*
* Copyright (C) 1999-2003 3ware Inc.
*
* Kernel compatablity By: Andre Hedrick <andre@suse.com>
* Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
*
* Other ars of this file are derived from code that was
*
* Copyright (C) 1999-2000 Michael Cornwell <cornwell@acm.org>
* Copyright (C) 2000 Andre Hedrick <andre@linux-ide.org>
*
* 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, or (at your option)
* any later version.
*
* You should have received a copy of the GNU General Public License
* (for example COPYING); if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* This code was originally developed as a Senior Thesis by Michael Cornwell
* at the Concurrent Systems Laboratory (now part of the Storage Systems
* Research Center), Jack Baskin School of Engineering, University of
* California, Santa Cruz. http://ssrc.soe.ucsc.edu/
*
*/
// This file contains the linux-specific IOCTL parts of
// smartmontools. It includes one interface routine for ATA devices,
// one for SCSI devices, and one for ATA devices behind escalade
// controllers.
#include "config.h"
#include <errno.h>
#include <fcntl.h>
#include <glob.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/sg.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <unistd.h>
#ifndef makedev // old versions of types.h do not include sysmacros.h
#include <sys/sysmacros.h>
#endif
#include "int64.h"
#include "atacmds.h"
#include "extern.h"
extern smartmonctrl * con;
#include "os_linux.h"
#include "scsicmds.h"
#include "utility.h"
#include "extern.h"
#include "cciss.h"
#ifndef ENOTSUP
#define ENOTSUP ENOSYS
#endif
typedef unsigned long long u8;
#define ARGUSED(x) ((void)(x))
static const char *filenameandversion="$Id: os_linux.cpp,v 1.97 2007/09/06 08:48:55 ballen4705 Exp $";
const char *os_XXXX_c_cvsid="$Id: os_linux.cpp,v 1.97 2007/09/06 08:48:55 ballen4705 Exp $" \
ATACMDS_H_CVSID CONFIG_H_CVSID INT64_H_CVSID OS_LINUX_H_CVSID SCSICMDS_H_CVSID UTILITY_H_CVSID;
// to hold onto exit code for atexit routine
extern int exitstatus;
// global variable holding byte count of allocated memory
extern long long bytes;
/* for passing global control variables */
extern smartmonctrl *con;
/* This function will setup and fix device nodes for a 3ware controller. */
#define MAJOR_STRING_LENGTH 3
#define DEVICE_STRING_LENGTH 32
#define NODE_STRING_LENGTH 16
int setup_3ware_nodes(char *nodename, char *driver_name) {
int tw_major = 0;
int index = 0;
char majorstring[MAJOR_STRING_LENGTH+1];
char device_name[DEVICE_STRING_LENGTH+1];
char nodestring[NODE_STRING_LENGTH];
struct stat stat_buf;
FILE *file;
/* First try to open up /proc/devices */
if (!(file = fopen("/proc/devices", "r"))) {
pout("Error opening /proc/devices to check/create 3ware device nodes\n");
syserror("fopen");
return 0; // don't fail here: user might not have /proc !
}
/* Attempt to get device major number */
while (EOF != fscanf(file, "%3s %32s", majorstring, device_name)) {
majorstring[MAJOR_STRING_LENGTH]='\0';
device_name[DEVICE_STRING_LENGTH]='\0';
if (!strncmp(device_name, nodename, DEVICE_STRING_LENGTH)) {
tw_major = atoi(majorstring);
break;
}
}
fclose(file);
/* See if we found a major device number */
if (!tw_major) {
pout("No major number for /dev/%s listed in /proc/devices. Is the %s driver loaded?\n", nodename, driver_name);
return 2;
}
/* Now check if nodes are correct */
for (index=0; index<16; index++) {
sprintf(nodestring, "/dev/%s%d", nodename, index);
/* Try to stat the node */
if ((stat(nodestring, &stat_buf))) {
/* Create a new node if it doesn't exist */
if (mknod(nodestring, S_IFCHR|0600, makedev(tw_major, index))) {
pout("problem creating 3ware device nodes %s", nodestring);
syserror("mknod");
return 3;
}
}
/* See if nodes major and minor numbers are correct */
if ((tw_major != (int)(major(stat_buf.st_rdev))) ||
(index != (int)(minor(stat_buf.st_rdev))) ||
(!S_ISCHR(stat_buf.st_mode))) {
/* Delete the old node */
if (unlink(nodestring)) {
pout("problem unlinking stale 3ware device node %s", nodestring);
syserror("unlink");
return 4;
}
/* Make a new node */
if (mknod(nodestring, S_IFCHR|0600, makedev(tw_major, index))) {
pout("problem creating 3ware device nodes %s", nodestring);
syserror("mknod");
return 5;
}
}
}
return 0;
}
// equivalent to open(path, flags)
int deviceopen(const char *pathname, char *type){
if (!strcmp(type,"SCSI")) {
int fd = open(pathname, O_RDWR | O_NONBLOCK);
if (fd < 0 && errno == EROFS)
fd = open(pathname, O_RDONLY | O_NONBLOCK);
return fd;
}
else if (!strcmp(type,"ATA"))
return open(pathname, O_RDONLY | O_NONBLOCK);
else if (!strcmp(type,"ATA_3WARE_9000")) {
// the device nodes for this controller are dynamically assigned,
// so we need to check that they exist with the correct major
// numbers and if not, create them
if (setup_3ware_nodes("twa", "3w-9xxx")) {
if (!errno)
errno=ENXIO;
return -1;
}
return open(pathname, O_RDONLY | O_NONBLOCK);
}
else if (!strcmp(type,"ATA_3WARE_678K")) {
// the device nodes for this controller are dynamically assigned,
// so we need to check that they exist with the correct major
// numbers and if not, create them
if (setup_3ware_nodes("twe", "3w-xxxx")) {
if (!errno)
errno=ENXIO;
return -1;
}
return open(pathname, O_RDONLY | O_NONBLOCK);
}
else if(!strcmp(type, "CCISS")) {
// the device is a cciss smart array device.
return open(pathname, O_RDWR | O_NONBLOCK);
}
else
return -1;
}
// equivalent to close(file descriptor)
int deviceclose(int fd){
return close(fd);
}
// print examples for smartctl
void print_smartctl_examples(){
printf("=================================================== SMARTCTL EXAMPLES =====\n\n");
#ifdef HAVE_GETOPT_LONG
printf(
" smartctl --all /dev/hda (Prints all SMART information)\n\n"
" smartctl --smart=on --offlineauto=on --saveauto=on /dev/hda\n"
" (Enables SMART on first disk)\n\n"
" smartctl --test=long /dev/hda (Executes extended disk self-test)\n\n"
" smartctl --attributes --log=selftest --quietmode=errorsonly /dev/hda\n"
" (Prints Self-Test & Attribute errors)\n"
" smartctl --all --device=3ware,2 /dev/sda\n"
" smartctl --all --device=3ware,2 /dev/twe0\n"
" smartctl --all --device=3ware,2 /dev/twa0\n"
" (Prints all SMART info for 3rd ATA disk on 3ware RAID controller)\n"
" smartctl --all --device=hpt,1/1/3 /dev/sda\n"
" (Prints all SMART info for the SATA disk attached to the 3rd PMPort\n"
" of the 1st channel on the 1st HighPoint RAID controller)\n"
);
#else
printf(
" smartctl -a /dev/hda (Prints all SMART information)\n"
" smartctl -s on -o on -S on /dev/hda (Enables SMART on first disk)\n"
" smartctl -t long /dev/hda (Executes extended disk self-test)\n"
" smartctl -A -l selftest -q errorsonly /dev/hda\n"
" (Prints Self-Test & Attribute errors)\n"
" smartctl -a -d 3ware,2 /dev/sda\n"
" smartctl -a -d 3ware,2 /dev/twa0\n"
" smartctl -a -d 3ware,2 /dev/twe0\n"
" (Prints all SMART info for 3rd ATA disk on 3ware RAID controller)\n"
" smartctl -a -d hpt,1/1/3 /dev/sda\n"
" (Prints all SMART info for the SATA disk attached to the 3rd PMPort\n"
" of the 1st channel on the 1st HighPoint RAID controller)\n"
);
#endif
return;
}
// we are going to take advantage of the fact that Linux's devfs will only
// have device entries for devices that exist. So if we get the equivalent of
// ls /dev/hd[a-t], we have all the ATA devices on the system
//
// If any errors occur, leave errno set as it was returned by the
// system call, and return <0.
int get_dev_names(char*** names, const char* pattern, const char* name, int max) {
int n = 0, retglob, i, lim;
char** mp;
glob_t globbuf;
memset(&globbuf, 0, sizeof(globbuf));
// in case of non-clean exit
*names=NULL;
// Use glob to look for any directory entries matching the pattern
if ((retglob=glob(pattern, GLOB_ERR, NULL, &globbuf))) {
// glob failed: free memory and return
globfree(&globbuf);
if (retglob==GLOB_NOMATCH){
pout("glob(3) found no matches for pattern %s\n", pattern);
return 0;
}
if (retglob==GLOB_NOSPACE)
pout("glob(3) ran out of memory matching pattern %s\n", pattern);
#ifdef GLOB_ABORTED // missing in old versions of glob.h
else if (retglob==GLOB_ABORTED)
pout("glob(3) aborted matching pattern %s\n", pattern);
#endif
else
pout("Unexplained error in glob(3) of pattern %s\n", pattern);
return -1;
}
// did we find too many paths?
lim = ((int)globbuf.gl_pathc < max) ? (int)globbuf.gl_pathc : max;
if (lim < (int)globbuf.gl_pathc)
pout("glob(3) found %d > MAX=%d devices matching pattern %s: ignoring %d paths\n",
(int)globbuf.gl_pathc, max, pattern, (int)(globbuf.gl_pathc-max));
// allocate space for up to lim number of ATA devices
if (!(mp = (char **)calloc(lim, sizeof(char*)))){
pout("Out of memory constructing scan device list\n");
return -1;
}
// now step through the list returned by glob. If not a link, copy
// to list. If it is a link, evaluate it and see if the path ends
// in "disc".
for (i=0; i<lim; i++){
int retlink;
// prepare a buffer for storing the link
char linkbuf[1024];
// see if path is a link
retlink=readlink(globbuf.gl_pathv[i], linkbuf, 1023);
// if not a link (or a strange link), keep it
if (retlink<=0 || retlink>1023)
mp[n++] = CustomStrDup(globbuf.gl_pathv[i], 1, __LINE__, filenameandversion);
else {
// or if it's a link that points to a disc, follow it
char *p;
linkbuf[retlink]='\0';
if ((p=strrchr(linkbuf,'/')) && !strcmp(p+1, "disc"))
// This is the branch of the code that gets followed if we are
// using devfs WITH traditional compatibility links. In this
// case, we add the traditional device name to the list that
// is returned.
mp[n++] = CustomStrDup(globbuf.gl_pathv[i], 1, __LINE__, filenameandversion);
else {
// This is the branch of the code that gets followed if we are
// using devfs WITHOUT traditional compatibility links. In
// this case, we check that the link to the directory is of
// the correct type, and then append "disc" to it.
char tmpname[1024]={0};
const char * type = (strcmp(name,"ATA") ? "scsi" : "ide");
if (strstr(linkbuf, type)){
snprintf(tmpname, 1024, "%s/disc", globbuf.gl_pathv[i]);
mp[n++] = CustomStrDup(tmpname, 1, __LINE__, filenameandversion);
}
}
}
}
// free memory, track memory usage
globfree(&globbuf);
mp = static_cast<char **>(realloc(mp,n*(sizeof(char*))));
bytes += n*(sizeof(char*));
// and set up return values
*names=mp;
return n;
}
// makes a list of device names to scan, for either ATA or SCSI
// devices. Return -1 if no memory remaining, else the number of
// devices on the list, which can be >=0.
int make_device_names (char*** devlist, const char* name) {
int retval, maxdev;
#if 0
// for testing case where no device names are found
return 0;
#endif
if (!strcmp(name,"SCSI"))
retval=get_dev_names(devlist,"/dev/sd[a-z]", name, maxdev=26);
else if (!strcmp(name,"ATA"))
retval=get_dev_names(devlist,"/dev/hd[a-t]", name, maxdev=20);
else
// don't recognize disk type!
return 0;
// if we found traditional links, we are done
if (retval>0)
return retval;
// else look for devfs entries without traditional links
return get_dev_names(devlist,"/dev/discs/disc*", name, maxdev);
}
// PURPOSE
// This is an interface routine meant to isolate the OS dependent
// parts of the code, and to provide a debugging interface. Each
// different port and OS needs to provide it's own interface. This
// is the linux one.
// DETAILED DESCRIPTION OF ARGUMENTS
// device: is the file descriptor provided by open()
// command: defines the different operations.
// select: additional input data if needed (which log, which type of
// self-test).
// data: location to write output data, if needed (512 bytes).
// Note: not all commands use all arguments.
// RETURN VALUES
// -1 if the command failed
// 0 if the command succeeded,
// STATUS_CHECK routine:
// -1 if the command failed
// 0 if the command succeeded and disk SMART status is "OK"
// 1 if the command succeeded and disk SMART status is "FAILING"
#define BUFFER_LENGTH (4+512)
int ata_command_interface(int device, smart_command_set command, int select, char *data){
unsigned char buff[BUFFER_LENGTH];
// positive: bytes to write to caller. negative: bytes to READ from
// caller. zero: non-data command
int copydata=0;
const int HDIO_DRIVE_CMD_OFFSET = 4;
// See struct hd_drive_cmd_hdr in hdreg.h. Before calling ioctl()
// buff[0]: ATA COMMAND CODE REGISTER
// buff[1]: ATA SECTOR NUMBER REGISTER == LBA LOW REGISTER
// buff[2]: ATA FEATURES REGISTER
// buff[3]: ATA SECTOR COUNT REGISTER
// Note that on return:
// buff[2] contains the ATA SECTOR COUNT REGISTER
// clear out buff. Large enough for HDIO_DRIVE_CMD (4+512 bytes)
memset(buff, 0, BUFFER_LENGTH);
buff[0]=ATA_SMART_CMD;
switch (command){
case CHECK_POWER_MODE:
buff[0]=ATA_CHECK_POWER_MODE;
copydata=1;
break;
case READ_VALUES:
buff[2]=ATA_SMART_READ_VALUES;
buff[3]=1;
copydata=512;
break;
case READ_THRESHOLDS:
buff[2]=ATA_SMART_READ_THRESHOLDS;
buff[1]=buff[3]=1;
copydata=512;
break;
case READ_LOG:
buff[2]=ATA_SMART_READ_LOG_SECTOR;
buff[1]=select;
buff[3]=1;
copydata=512;
break;
case WRITE_LOG:
break;
case IDENTIFY:
buff[0]=ATA_IDENTIFY_DEVICE;
buff[3]=1;
copydata=512;
break;
case PIDENTIFY:
buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
buff[3]=1;
copydata=512;
break;
case ENABLE:
buff[2]=ATA_SMART_ENABLE;
buff[1]=1;
break;
case DISABLE:
buff[2]=ATA_SMART_DISABLE;
buff[1]=1;
break;
case STATUS:
// this command only says if SMART is working. It could be
// replaced with STATUS_CHECK below.
buff[2]=ATA_SMART_STATUS;
break;
case AUTO_OFFLINE:
// NSECT is 241 for enable but no data transfer. Use TASK ioctl.
buff[1]=ATA_SMART_AUTO_OFFLINE;
buff[2]=select;
break;
case AUTOSAVE:
// NSECT is 248 for enable but no data transfer. Use TASK ioctl.
buff[1]=ATA_SMART_AUTOSAVE;
buff[2]=select;
break;
case IMMEDIATE_OFFLINE:
buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
buff[1]=select;
break;
case STATUS_CHECK:
// This command uses HDIO_DRIVE_TASK and has different syntax than
// the other commands.
buff[1]=ATA_SMART_STATUS;
break;
default:
pout("Unrecognized command %d in linux_ata_command_interface()\n"
"Please contact " PACKAGE_BUGREPORT "\n", command);
errno=ENOSYS;
return -1;
}
// This command uses the HDIO_DRIVE_TASKFILE ioctl(). This is the
// only ioctl() that can be used to WRITE data to the disk.
if (command==WRITE_LOG) {
unsigned char task[sizeof(ide_task_request_t)+512];
ide_task_request_t *reqtask=(ide_task_request_t *) task;
task_struct_t *taskfile=(task_struct_t *) reqtask->io_ports;
int retval;
memset(task, 0, sizeof(task));
taskfile->data = 0;
taskfile->feature = ATA_SMART_WRITE_LOG_SECTOR;
taskfile->sector_count = 1;
taskfile->sector_number = select;
taskfile->low_cylinder = 0x4f;
taskfile->high_cylinder = 0xc2;
taskfile->device_head = 0;
taskfile->command = ATA_SMART_CMD;
reqtask->data_phase = TASKFILE_OUT;
reqtask->req_cmd = IDE_DRIVE_TASK_OUT;
reqtask->out_size = 512;
reqtask->in_size = 0;
// copy user data into the task request structure
memcpy(task+sizeof(ide_task_request_t), data, 512);
if ((retval=ioctl(device, HDIO_DRIVE_TASKFILE, task))) {
if (retval==-EINVAL)
pout("Kernel lacks HDIO_DRIVE_TASKFILE support; compile kernel with CONFIG_IDE_TASKFILE_IO set\n");
return -1;
}
return 0;
}
// There are two different types of ioctls(). The HDIO_DRIVE_TASK
// one is this:
if (command==STATUS_CHECK || command==AUTOSAVE || command==AUTO_OFFLINE){
int retval;
// NOT DOCUMENTED in /usr/src/linux/include/linux/hdreg.h. You
// have to read the IDE driver source code. Sigh.
// buff[0]: ATA COMMAND CODE REGISTER
// buff[1]: ATA FEATURES REGISTER
// buff[2]: ATA SECTOR_COUNT
// buff[3]: ATA SECTOR NUMBER
// buff[4]: ATA CYL LO REGISTER
// buff[5]: ATA CYL HI REGISTER
// buff[6]: ATA DEVICE HEAD
unsigned const char normal_lo=0x4f, normal_hi=0xc2;
unsigned const char failed_lo=0xf4, failed_hi=0x2c;
buff[4]=normal_lo;
buff[5]=normal_hi;
if ((retval=ioctl(device, HDIO_DRIVE_TASK, buff))) {
if (retval==-EINVAL) {
pout("Error SMART Status command via HDIO_DRIVE_TASK failed");
pout("Rebuild older linux 2.2 kernels with HDIO_DRIVE_TASK support added\n");
}
else
syserror("Error SMART Status command failed");
return -1;
}
// Cyl low and Cyl high unchanged means "Good SMART status"
if (buff[4]==normal_lo && buff[5]==normal_hi)
return 0;
// These values mean "Bad SMART status"
if (buff[4]==failed_lo && buff[5]==failed_hi)
return 1;
// We haven't gotten output that makes sense; print out some debugging info
syserror("Error SMART Status command failed");
pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
pout("Register values returned from SMART Status command are:\n");
pout("ST =0x%02x\n",(int)buff[0]);
pout("ERR=0x%02x\n",(int)buff[1]);
pout("NS =0x%02x\n",(int)buff[2]);
pout("SC =0x%02x\n",(int)buff[3]);
pout("CL =0x%02x\n",(int)buff[4]);
pout("CH =0x%02x\n",(int)buff[5]);
pout("SEL=0x%02x\n",(int)buff[6]);
return -1;
}
#if 1
// Note to people doing ports to other OSes -- don't worry about
// this block -- you can safely ignore it. I have put it here
// because under linux when you do IDENTIFY DEVICE to a packet
// device, it generates an ugly kernel syslog error message. This
// is harmless but frightens users. So this block detects packet
// devices and make IDENTIFY DEVICE fail "nicely" without a syslog
// error message.
//
// If you read only the ATA specs, it appears as if a packet device
// *might* respond to the IDENTIFY DEVICE command. This is
// misleading - it's because around the time that SFF-8020 was
// incorporated into the ATA-3/4 standard, the ATA authors were
// sloppy. See SFF-8020 and you will see that ATAPI devices have
// *always* had IDENTIFY PACKET DEVICE as a mandatory part of their
// command set, and return 'Command Aborted' to IDENTIFY DEVICE.
if (command==IDENTIFY || command==PIDENTIFY){
unsigned short deviceid[256];
// check the device identity, as seen when the system was booted
// or the device was FIRST registered. This will not be current
// if the user has subsequently changed some of the parameters. If
// device is a packet device, swap the command interpretations.
if (!ioctl(device, HDIO_GET_IDENTITY, deviceid) && (deviceid[0] & 0x8000))
buff[0]=(command==IDENTIFY)?ATA_IDENTIFY_PACKET_DEVICE:ATA_IDENTIFY_DEVICE;
}
#endif
// We are now doing the HDIO_DRIVE_CMD type ioctl.
if ((ioctl(device, HDIO_DRIVE_CMD, buff)))
return -1;
// CHECK POWER MODE command returns information in the Sector Count
// register (buff[3]). Copy to return data buffer.
if (command==CHECK_POWER_MODE)
buff[HDIO_DRIVE_CMD_OFFSET]=buff[2];
// if the command returns data then copy it back
if (copydata)
memcpy(data, buff+HDIO_DRIVE_CMD_OFFSET, copydata);
return 0;
}
// >>>>>> Start of general SCSI specific linux code
/* Linux specific code.
* Historically smartmontools (and smartsuite before it) used the
* SCSI_IOCTL_SEND_COMMAND ioctl which is available to all linux device
* nodes that use the SCSI subsystem. A better interface has been available
* via the SCSI generic (sg) driver but this involves the extra step of
* mapping disk devices (e.g. /dev/sda) to the corresponding sg device
* (e.g. /dev/sg2). In the linux kernel 2.6 series most of the facilities of
* the sg driver have become available via the SG_IO ioctl which is available
* on all SCSI devices (on SCSI tape devices from lk 2.6.6).
* So the strategy below is to find out if the SG_IO ioctl is available and
* if so use it; failing that use the older SCSI_IOCTL_SEND_COMMAND ioctl.
* Should work in 2.0, 2.2, 2.4 and 2.6 series linux kernels. */
#define MAX_DXFER_LEN 1024 /* can be increased if necessary */
#define SEND_IOCTL_RESP_SENSE_LEN 16 /* ioctl limitation */
#define SG_IO_RESP_SENSE_LEN 64 /* large enough see buffer */
#define LSCSI_DRIVER_MASK 0xf /* mask out "suggestions" */
#define LSCSI_DRIVER_SENSE 0x8 /* alternate CHECK CONDITION indication */
#define LSCSI_DRIVER_TIMEOUT 0x6
#define LSCSI_DID_TIME_OUT 0x3
#define LSCSI_DID_BUS_BUSY 0x2
#define LSCSI_DID_NO_CONNECT 0x1
#ifndef SCSI_IOCTL_SEND_COMMAND
#define SCSI_IOCTL_SEND_COMMAND 1
#endif
#define SG_IO_PRESENT_UNKNOWN 0
#define SG_IO_PRESENT_YES 1
#define SG_IO_PRESENT_NO 2
static int sg_io_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report,
int unknown);
static int sisc_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report);
static int sg_io_state = SG_IO_PRESENT_UNKNOWN;
/* Preferred implementation for issuing SCSI commands in linux. This
* function uses the SG_IO ioctl. Return 0 if command issued successfully
* (various status values should still be checked). If the SCSI command
* cannot be issued then a negative errno value is returned. */
static int sg_io_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report,
int unknown)
{
#ifndef SG_IO
ARGUSED(dev_fd); ARGUSED(iop); ARGUSED(report);
return -ENOTTY;
#else
struct sg_io_hdr io_hdr;
if (report > 0) {
int k, j;
const unsigned char * ucp = iop->cmnd;
const char * np;
char buff[256];
const int sz = (int)sizeof(buff);
np = scsi_get_opcode_name(ucp[0]);
j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
for (k = 0; k < (int)iop->cmnd_len; ++k)
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
if ((report > 1) &&
(DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
int trunc = (iop->dxfer_len > 256) ? 1 : 0;
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n Outgoing "
"data, len=%d%s:\n", (int)iop->dxfer_len,
(trunc ? " [only first 256 bytes shown]" : ""));
dStrHex((const char *)iop->dxferp,
(trunc ? 256 : iop->dxfer_len) , 1);
}
else
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
pout(buff);
}
memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
io_hdr.interface_id = 'S';
io_hdr.cmd_len = iop->cmnd_len;
io_hdr.mx_sb_len = iop->max_sense_len;
io_hdr.dxfer_len = iop->dxfer_len;
io_hdr.dxferp = iop->dxferp;
io_hdr.cmdp = iop->cmnd;
io_hdr.sbp = iop->sensep;
/* sg_io_hdr interface timeout has millisecond units. Timeout of 0
defaults to 60 seconds. */
io_hdr.timeout = ((0 == iop->timeout) ? 60 : iop->timeout) * 1000;
switch (iop->dxfer_dir) {
case DXFER_NONE:
io_hdr.dxfer_direction = SG_DXFER_NONE;
break;
case DXFER_FROM_DEVICE:
io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
break;
case DXFER_TO_DEVICE:
io_hdr.dxfer_direction = SG_DXFER_TO_DEV;
break;
default:
pout("do_scsi_cmnd_io: bad dxfer_dir\n");
return -EINVAL;
}
iop->resp_sense_len = 0;
iop->scsi_status = 0;
iop->resid = 0;
if (ioctl(dev_fd, SG_IO, &io_hdr) < 0) {
if (report && (! unknown))
pout(" SG_IO ioctl failed, errno=%d [%s]\n", errno,
strerror(errno));
return -errno;
}
iop->resid = io_hdr.resid;
iop->scsi_status = io_hdr.status;
if (report > 0) {
pout(" scsi_status=0x%x, host_status=0x%x, driver_status=0x%x\n"
" info=0x%x duration=%d milliseconds resid=%d\n", io_hdr.status,
io_hdr.host_status, io_hdr.driver_status, io_hdr.info,
io_hdr.duration, io_hdr.resid);
if (report > 1) {
if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
int trunc, len;
len = iop->dxfer_len - iop->resid;
trunc = (len > 256) ? 1 : 0;
if (len > 0) {
pout(" Incoming data, len=%d%s:\n", len,
(trunc ? " [only first 256 bytes shown]" : ""));
dStrHex((const char*)iop->dxferp, (trunc ? 256 : len),
1);
} else
pout(" Incoming data trimmed to nothing by resid\n");
}
}
}
if (io_hdr.info | SG_INFO_CHECK) { /* error or warning */
int masked_driver_status = (LSCSI_DRIVER_MASK & io_hdr.driver_status);
if (0 != io_hdr.host_status) {
if ((LSCSI_DID_NO_CONNECT == io_hdr.host_status) ||
(LSCSI_DID_BUS_BUSY == io_hdr.host_status) ||
(LSCSI_DID_TIME_OUT == io_hdr.host_status))
return -ETIMEDOUT;
else
return -EIO; /* catch all */
}
if (0 != masked_driver_status) {
if (LSCSI_DRIVER_TIMEOUT == masked_driver_status)
return -ETIMEDOUT;
else if (LSCSI_DRIVER_SENSE != masked_driver_status)
return -EIO;
}
if (LSCSI_DRIVER_SENSE == masked_driver_status)
iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
iop->resp_sense_len = io_hdr.sb_len_wr;
if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
iop->sensep && (iop->resp_sense_len > 0)) {
if (report > 1) {
pout(" >>> Sense buffer, len=%d:\n",
(int)iop->resp_sense_len);
dStrHex((const char *)iop->sensep, iop->resp_sense_len , 1);
}
}
if (report) {
if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
if ((iop->sensep[0] & 0x7f) > 0x71)
pout(" status=%x: [desc] sense_key=%x asc=%x ascq=%x\n",
iop->scsi_status, iop->sensep[1] & 0xf,
iop->sensep[2], iop->sensep[3]);
else
pout(" status=%x: sense_key=%x asc=%x ascq=%x\n",
iop->scsi_status, iop->sensep[2] & 0xf,
iop->sensep[12], iop->sensep[13]);
}
else
pout(" status=0x%x\n", iop->scsi_status);
}
}
return 0;
#endif
}
struct linux_ioctl_send_command
{
int inbufsize;
int outbufsize;
UINT8 buff[MAX_DXFER_LEN + 16];
};
/* The Linux SCSI_IOCTL_SEND_COMMAND ioctl is primitive and it doesn't
* support: CDB length (guesses it from opcode), resid and timeout.
* Patches in Linux 2.4.21 and 2.5.70 to extend SEND DIAGNOSTIC timeout
* to 2 hours in order to allow long foreground extended self tests. */
static int sisc_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report)
{
struct linux_ioctl_send_command wrk;
int status, buff_offset;
size_t len;
memcpy(wrk.buff, iop->cmnd, iop->cmnd_len);
buff_offset = iop->cmnd_len;
if (report > 0) {
int k, j;
const unsigned char * ucp = iop->cmnd;
const char * np;
char buff[256];
const int sz = (int)sizeof(buff);
np = scsi_get_opcode_name(ucp[0]);
j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
for (k = 0; k < (int)iop->cmnd_len; ++k)
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
if ((report > 1) &&
(DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
int trunc = (iop->dxfer_len > 256) ? 1 : 0;
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n Outgoing "
"data, len=%d%s:\n", (int)iop->dxfer_len,
(trunc ? " [only first 256 bytes shown]" : ""));
dStrHex((const char *)iop->dxferp,
(trunc ? 256 : iop->dxfer_len) , 1);
}
else
j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
pout(buff);
}
switch (iop->dxfer_dir) {
case DXFER_NONE:
wrk.inbufsize = 0;
wrk.outbufsize = 0;
break;
case DXFER_FROM_DEVICE:
wrk.inbufsize = 0;
if (iop->dxfer_len > MAX_DXFER_LEN)
return -EINVAL;
wrk.outbufsize = iop->dxfer_len;
break;
case DXFER_TO_DEVICE:
if (iop->dxfer_len > MAX_DXFER_LEN)
return -EINVAL;
memcpy(wrk.buff + buff_offset, iop->dxferp, iop->dxfer_len);
wrk.inbufsize = iop->dxfer_len;
wrk.outbufsize = 0;
break;
default:
pout("do_scsi_cmnd_io: bad dxfer_dir\n");
return -EINVAL;
}
iop->resp_sense_len = 0;
iop->scsi_status = 0;
iop->resid = 0;
status = ioctl(dev_fd, SCSI_IOCTL_SEND_COMMAND, &wrk);
if (-1 == status) {
if (report)
pout(" SCSI_IOCTL_SEND_COMMAND ioctl failed, errno=%d [%s]\n",
errno, strerror(errno));
return -errno;
}
if (0 == status) {
if (report > 0)
pout(" status=0\n");
if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
memcpy(iop->dxferp, wrk.buff, iop->dxfer_len);
if (report > 1) {
int trunc = (iop->dxfer_len > 256) ? 1 : 0;
pout(" Incoming data, len=%d%s:\n", (int)iop->dxfer_len,
(trunc ? " [only first 256 bytes shown]" : ""));
dStrHex((const char*)iop->dxferp,
(trunc ? 256 : iop->dxfer_len) , 1);
}
}
return 0;
}
iop->scsi_status = status & 0x7e; /* bits 0 and 7 used to be for vendors */
if (LSCSI_DRIVER_SENSE == ((status >> 24) & 0xf))
iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
len = (SEND_IOCTL_RESP_SENSE_LEN < iop->max_sense_len) ?
SEND_IOCTL_RESP_SENSE_LEN : iop->max_sense_len;
if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
iop->sensep && (len > 0)) {
memcpy(iop->sensep, wrk.buff, len);
iop->resp_sense_len = len;
if (report > 1) {
pout(" >>> Sense buffer, len=%d:\n", (int)len);
dStrHex((const char *)wrk.buff, len , 1);
}
}
if (report) {
if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
pout(" status=%x: sense_key=%x asc=%x ascq=%x\n", status & 0xff,
wrk.buff[2] & 0xf, wrk.buff[12], wrk.buff[13]);
}
else
pout(" status=0x%x\n", status);
}
if (iop->scsi_status > 0)
return 0;
else {
if (report > 0)
pout(" ioctl status=0x%x but scsi status=0, fail with EIO\n",
status);
return -EIO; /* give up, assume no device there */
}
}
/* SCSI command transmission interface function, linux version.
* Returns 0 if SCSI command successfully launched and response
* received. Even when 0 is returned the caller should check
* scsi_cmnd_io::scsi_status for SCSI defined errors and warnings
* (e.g. CHECK CONDITION). If the SCSI command could not be issued
* (e.g. device not present or timeout) or some other problem
* (e.g. timeout) then returns a negative errno value */
static int do_normal_scsi_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop,
int report)
{
int res;
/* implementation relies on static sg_io_state variable. If not
* previously set tries the SG_IO ioctl. If that succeeds assume
* that SG_IO ioctl functional. If it fails with an errno value
* other than ENODEV (no device) or permission then assume
* SCSI_IOCTL_SEND_COMMAND is the only option. */
switch (sg_io_state) {
case SG_IO_PRESENT_UNKNOWN:
/* ignore report argument */
if (0 == (res = sg_io_cmnd_io(dev_fd, iop, report, 1))) {
sg_io_state = SG_IO_PRESENT_YES;
return 0;
} else if ((-ENODEV == res) || (-EACCES == res) || (-EPERM == res))
return res; /* wait until we see a device */
sg_io_state = SG_IO_PRESENT_NO;
/* drop through by design */
case SG_IO_PRESENT_NO:
return sisc_cmnd_io(dev_fd, iop, report);
case SG_IO_PRESENT_YES:
return sg_io_cmnd_io(dev_fd, iop, report, 0);
default:
pout(">>>> do_scsi_cmnd_io: bad sg_io_state=%d\n", sg_io_state);
sg_io_state = SG_IO_PRESENT_UNKNOWN;
return -EIO; /* report error and reset state */
}
}
/* Check and call the right interface. Maybe when the do_generic_scsi_cmd_io interface is better
we can take off this crude way of calling the right interface */
int do_scsi_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report)
{
switch(con->controller_type)
{
case CONTROLLER_CCISS:
#ifdef HAVE_LINUX_CCISS_IOCTL_H
return cciss_io_interface(dev_fd, con->controller_port-1, iop, report);
#else
{
static int warned = 0;
if (!warned) {
pout("CCISS support is not available in this build of smartmontools,\n"
"<linux/cciss_ioctl.h> was not available at build time.\n\n");
warned = 1;
}
}
errno = ENOSYS;
return -1;
#endif
// not reached
break;
default:
return do_normal_scsi_cmnd_io(dev_fd, iop, report);
// not reached
break;
}
}
// >>>>>> End of general SCSI specific linux code
// prototype
void printwarning(smart_command_set command);
// PURPOSE
// This is an interface routine meant to isolate the OS dependent
// parts of the code, and to provide a debugging interface. Each
// different port and OS needs to provide it's own interface. This
// is the linux interface to the 3ware 3w-xxxx driver. It allows ATA
// commands to be passed through the SCSI driver.
// DETAILED DESCRIPTION OF ARGUMENTS
// fd: is the file descriptor provided by open()
// disknum is the disk number (0 to 15) in the RAID array
// escalade_type indicates the type of controller type, and if scsi or char interface is used
// command: defines the different operations.
// select: additional input data if needed (which log, which type of
// self-test).
// data: location to write output data, if needed (512 bytes).
// Note: not all commands use all arguments.
// RETURN VALUES
// -1 if the command failed
// 0 if the command succeeded,
// STATUS_CHECK routine:
// -1 if the command failed
// 0 if the command succeeded and disk SMART status is "OK"
// 1 if the command succeeded and disk SMART status is "FAILING"
/* 512 is the max payload size: increase if needed */
#define BUFFER_LEN_678K ( sizeof(TW_Ioctl) ) // 1044 unpacked, 1041 packed
#define BUFFER_LEN_678K_CHAR ( sizeof(TW_New_Ioctl)+512-1 ) // 1539 unpacked, 1536 packed
#define BUFFER_LEN_9000 ( sizeof(TW_Ioctl_Buf_Apache)+512-1 ) // 2051 unpacked, 2048 packed
#define TW_IOCTL_BUFFER_SIZE ( MAX(MAX(BUFFER_LEN_678K, BUFFER_LEN_9000), BUFFER_LEN_678K_CHAR) )
int escalade_command_interface(int fd, int disknum, int escalade_type, smart_command_set command, int select, char *data){
// return value and buffer for ioctl()
int ioctlreturn, readdata=0;
// Used by both the SCSI and char interfaces
TW_Passthru *passthru=NULL;
char ioctl_buffer[TW_IOCTL_BUFFER_SIZE];
// only used for SCSI device interface
TW_Ioctl *tw_ioctl=NULL;
TW_Output *tw_output=NULL;
// only used for 6000/7000/8000 char device interface
TW_New_Ioctl *tw_ioctl_char=NULL;
// only used for 9000 character device interface
TW_Ioctl_Buf_Apache *tw_ioctl_apache=NULL;
memset(ioctl_buffer, 0, TW_IOCTL_BUFFER_SIZE);
if (escalade_type==CONTROLLER_3WARE_9000_CHAR) {
tw_ioctl_apache = (TW_Ioctl_Buf_Apache *)ioctl_buffer;
tw_ioctl_apache->driver_command.control_code = TW_IOCTL_FIRMWARE_PASS_THROUGH;
tw_ioctl_apache->driver_command.buffer_length = 512; /* payload size */
passthru = (TW_Passthru *)&(tw_ioctl_apache->firmware_command.command.oldcommand);
}
else if (escalade_type==CONTROLLER_3WARE_678K_CHAR) {
tw_ioctl_char = (TW_New_Ioctl *)ioctl_buffer;
tw_ioctl_char->data_buffer_length = 512;
passthru = (TW_Passthru *)&(tw_ioctl_char->firmware_command);
}
else if (escalade_type==CONTROLLER_3WARE_678K) {
tw_ioctl = (TW_Ioctl *)ioctl_buffer;
tw_ioctl->cdb[0] = TW_IOCTL;
tw_ioctl->opcode = TW_ATA_PASSTHRU;
tw_ioctl->input_length = 512; // correct even for non-data commands
tw_ioctl->output_length = 512; // correct even for non-data commands
tw_output = (TW_Output *)tw_ioctl;
passthru = (TW_Passthru *)&(tw_ioctl->input_data);
}
else {
pout("Unrecognized escalade_type %d in linux_3ware_command_interface(disk %d)\n"
"Please contact " PACKAGE_BUGREPORT "\n", escalade_type, disknum);
errno=ENOSYS;
return -1;
}
// Same for (almost) all commands - but some reset below
passthru->byte0.opcode = TW_OP_ATA_PASSTHRU;
passthru->request_id = 0xFF;
passthru->unit = disknum;
passthru->status = 0;
passthru->flags = 0x1;
passthru->drive_head = 0x0;
passthru->sector_num = 0;
// All SMART commands use this CL/CH signature. These are magic
// values from the ATA specifications.
passthru->cylinder_lo = 0x4F;
passthru->cylinder_hi = 0xC2;
// SMART ATA COMMAND REGISTER value
passthru->command = ATA_SMART_CMD;
// Is this a command that reads or returns 512 bytes?
// passthru->param values are:
// 0x0 - non data command without TFR write check,
// 0x8 - non data command with TFR write check,
// 0xD - data command that returns data to host from device
// 0xF - data command that writes data from host to device
// passthru->size values are 0x5 for non-data and 0x07 for data
if (command == READ_VALUES ||
command == READ_THRESHOLDS ||
command == READ_LOG ||
command == IDENTIFY ||
command == WRITE_LOG ) {
readdata=1;
passthru->byte0.sgloff = 0x5;
passthru->size = 0x7;
passthru->param = 0xD;
passthru->sector_count = 0x1;
// For 64-bit to work correctly, up the size of the command packet
// in dwords by 1 to account for the 64-bit single sgl 'address'
// field. Note that this doesn't agree with the typedefs but it's
// right (agree with kernel driver behavior/typedefs).
if (escalade_type==CONTROLLER_3WARE_9000_CHAR && sizeof(long)==8)
passthru->size++;
}
else {
// Non data command -- but doesn't use large sector
// count register values.
passthru->byte0.sgloff = 0x0;
passthru->size = 0x5;
passthru->param = 0x8;
passthru->sector_count = 0x0;
}
// Now set ATA registers depending upon command
switch (command){
case CHECK_POWER_MODE:
passthru->command = ATA_CHECK_POWER_MODE;
passthru->features = 0;
passthru->cylinder_lo = 0;
passthru->cylinder_hi = 0;
break;
case READ_VALUES:
passthru->features = ATA_SMART_READ_VALUES;
break;
case READ_THRESHOLDS:
passthru->features = ATA_SMART_READ_THRESHOLDS;
break;
case READ_LOG:
passthru->features = ATA_SMART_READ_LOG_SECTOR;
// log number to return
passthru->sector_num = select;
break;
case WRITE_LOG:
if (escalade_type == CONTROLLER_3WARE_9000_CHAR)
memcpy((unsigned char *)tw_ioctl_apache->data_buffer, data, 512);
else if (escalade_type == CONTROLLER_3WARE_678K_CHAR)
memcpy((unsigned char *)tw_ioctl_char->data_buffer, data, 512);
else {
// COMMAND NOT SUPPORTED VIA SCSI IOCTL INTERFACE
// memcpy(tw_output->output_data, data, 512);
printwarning(command);
errno=ENOTSUP;
return -1;
}
readdata=0;
passthru->features = ATA_SMART_WRITE_LOG_SECTOR;
passthru->sector_count = 1;
passthru->sector_num = select;
passthru->param = 0xF; // PIO data write
break;
case IDENTIFY:
// ATA IDENTIFY DEVICE
passthru->command = ATA_IDENTIFY_DEVICE;
passthru->features = 0;
passthru->cylinder_lo = 0;
passthru->cylinder_hi = 0;
break;
case PIDENTIFY:
// 3WARE controller can NOT have packet device internally
pout("WARNING - NO DEVICE FOUND ON 3WARE CONTROLLER (disk %d)\n", disknum);
pout("Note: /dev/sdX many need to be replaced with /dev/tweN or /dev/twaN\n");
errno=ENODEV;
return -1;
case ENABLE:
passthru->features = ATA_SMART_ENABLE;
break;
case DISABLE:
passthru->features = ATA_SMART_DISABLE;
break;
case AUTO_OFFLINE:
passthru->features = ATA_SMART_AUTO_OFFLINE;
// Enable or disable?
passthru->sector_count = select;
break;
case AUTOSAVE:
passthru->features = ATA_SMART_AUTOSAVE;
// Enable or disable?
passthru->sector_count = select;
break;
case IMMEDIATE_OFFLINE:
passthru->features = ATA_SMART_IMMEDIATE_OFFLINE;
// What test type to run?
passthru->sector_num = select;
break;
case STATUS_CHECK:
passthru->features = ATA_SMART_STATUS;
break;
case STATUS:
// This is JUST to see if SMART is enabled, by giving SMART status
// command. But it doesn't say if status was good, or failing.
// See below for the difference.
passthru->features = ATA_SMART_STATUS;
break;
default:
pout("Unrecognized command %d in linux_3ware_command_interface(disk %d)\n"
"Please contact " PACKAGE_BUGREPORT "\n", command, disknum);
errno=ENOSYS;
return -1;
}
// Now send the command down through an ioctl()
if (escalade_type==CONTROLLER_3WARE_9000_CHAR)
ioctlreturn=ioctl(fd, TW_IOCTL_FIRMWARE_PASS_THROUGH, tw_ioctl_apache);
else if (escalade_type==CONTROLLER_3WARE_678K_CHAR)
ioctlreturn=ioctl(fd, TW_CMD_PACKET_WITH_DATA, tw_ioctl_char);
else
ioctlreturn=ioctl(fd, SCSI_IOCTL_SEND_COMMAND, tw_ioctl);
// Deal with the different error cases
if (ioctlreturn) {
if (CONTROLLER_3WARE_678K==escalade_type && ((command==AUTO_OFFLINE || command==AUTOSAVE) && select)){
// error here is probably a kernel driver whose version is too old
printwarning(command);
errno=ENOTSUP;
}
if (!errno)
errno=EIO;
return -1;
}
// The passthru structure is valid after return from an ioctl if:
// - we are using the character interface OR
// - we are using the SCSI interface and this is a NON-READ-DATA command
// For SCSI interface, note that we set passthru to a different
// value after ioctl().
if (CONTROLLER_3WARE_678K==escalade_type) {
if (readdata)
passthru=NULL;
else
passthru=(TW_Passthru *)&(tw_output->output_data);
}
// See if the ATA command failed. Now that we have returned from
// the ioctl() call, if passthru is valid, then:
// - passthru->status contains the 3ware controller STATUS
// - passthru->command contains the ATA STATUS register
// - passthru->features contains the ATA ERROR register
//
// Check bits 0 (error bit) and 5 (device fault) of the ATA STATUS
// If bit 0 (error bit) is set, then ATA ERROR register is valid.
// While we *might* decode the ATA ERROR register, at the moment it
// doesn't make much sense: we don't care in detail why the error
// happened.
if (passthru && (passthru->status || (passthru->command & 0x21))) {
errno=EIO;
return -1;
}
// If this is a read data command, copy data to output buffer
if (readdata) {
if (escalade_type==CONTROLLER_3WARE_9000_CHAR)
memcpy(data, (unsigned char *)tw_ioctl_apache->data_buffer, 512);
else if (escalade_type==CONTROLLER_3WARE_678K_CHAR)
memcpy(data, (unsigned char *)tw_ioctl_char->data_buffer, 512);
else
memcpy(data, tw_output->output_data, 512);
}
// For STATUS_CHECK, we need to check register values
if (command==STATUS_CHECK) {
// To find out if the SMART RETURN STATUS is good or failing, we
// need to examine the values of the Cylinder Low and Cylinder
// High Registers.
unsigned short cyl_lo=passthru->cylinder_lo;
unsigned short cyl_hi=passthru->cylinder_hi;
// If values in Cyl-LO and Cyl-HI are unchanged, SMART status is good.
if (cyl_lo==0x4F && cyl_hi==0xC2)
return 0;
// If values in Cyl-LO and Cyl-HI are as follows, SMART status is FAIL
if (cyl_lo==0xF4 && cyl_hi==0x2C)
return 1;
// Any other values mean that something has gone wrong with the command
if (CONTROLLER_3WARE_678K==escalade_type) {
printwarning(command);
errno=ENOSYS;
return 0;
}
else {
errno=EIO;
return -1;
}
}
// copy sector count register (one byte!) to return data
if (command==CHECK_POWER_MODE)
*data=*(char *)&(passthru->sector_count);
// look for nonexistent devices/ports
if (command==IDENTIFY && !nonempty((unsigned char *)data, 512)) {
errno=ENODEV;
return -1;
}
return 0;
}
int marvell_command_interface(int device,
smart_command_set command,
int select,
char *data) {
typedef struct {
int inlen;
int outlen;
char cmd[540];
} mvsata_scsi_cmd;
int copydata = 0;
mvsata_scsi_cmd smart_command;
unsigned char *buff = (unsigned char *)&smart_command.cmd[6];
// See struct hd_drive_cmd_hdr in hdreg.h
// buff[0]: ATA COMMAND CODE REGISTER
// buff[1]: ATA SECTOR NUMBER REGISTER
// buff[2]: ATA FEATURES REGISTER
// buff[3]: ATA SECTOR COUNT REGISTER
// clear out buff. Large enough for HDIO_DRIVE_CMD (4+512 bytes)
memset(&smart_command, 0, sizeof(smart_command));
smart_command.inlen = 540;
smart_command.outlen = 540;
smart_command.cmd[0] = 0xC; //Vendor-specific code
smart_command.cmd[4] = 6; //command length
buff[0] = ATA_SMART_CMD;
switch (command){
case CHECK_POWER_MODE:
buff[0]=ATA_CHECK_POWER_MODE;
break;
case READ_VALUES:
buff[2]=ATA_SMART_READ_VALUES;
copydata=buff[3]=1;
break;
case READ_THRESHOLDS:
buff[2]=ATA_SMART_READ_THRESHOLDS;
copydata=buff[1]=buff[3]=1;
break;
case READ_LOG:
buff[2]=ATA_SMART_READ_LOG_SECTOR;
buff[1]=select;
copydata=buff[3]=1;
break;
case IDENTIFY:
buff[0]=ATA_IDENTIFY_DEVICE;
copydata=buff[3]=1;
break;
case PIDENTIFY:
buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
copydata=buff[3]=1;
break;
case ENABLE:
buff[2]=ATA_SMART_ENABLE;
buff[1]=1;
break;
case DISABLE:
buff[2]=ATA_SMART_DISABLE;
buff[1]=1;
break;
case STATUS:
case STATUS_CHECK:
// this command only says if SMART is working. It could be
// replaced with STATUS_CHECK below.
buff[2] = ATA_SMART_STATUS;
break;
case AUTO_OFFLINE:
buff[2]=ATA_SMART_AUTO_OFFLINE;
buff[3]=select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
break;
case AUTOSAVE:
buff[2]=ATA_SMART_AUTOSAVE;
buff[3]=select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
break;
case IMMEDIATE_OFFLINE:
buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
buff[1]=select;
break;
default:
pout("Unrecognized command %d in mvsata_os_specific_handler()\n", command);
exit(1);
break;
}
// There are two different types of ioctls(). The HDIO_DRIVE_TASK
// one is this:
// We are now doing the HDIO_DRIVE_CMD type ioctl.
if (ioctl(device, SCSI_IOCTL_SEND_COMMAND, (void *)&smart_command))
return -1;
if (command==CHECK_POWER_MODE) {
// LEON -- CHECK THIS PLEASE. THIS SHOULD BE THE SECTOR COUNT
// REGISTER, AND IT MIGHT BE buff[2] NOT buff[3]. Bruce
data[0]=buff[3];
return 0;
}
// Always succeed on a SMART status, as a disk that failed returned
// buff[4]=0xF4, buff[5]=0x2C, i.e. "Bad SMART status" (see below).
if (command == STATUS)
return 0;
//Data returned is starting from 0 offset
if (command == STATUS_CHECK)
{
// Cyl low and Cyl high unchanged means "Good SMART status"
if (buff[4] == 0x4F && buff[5] == 0xC2)
return 0;
// These values mean "Bad SMART status"
if (buff[4] == 0xF4 && buff[5] == 0x2C)
return 1;
// We haven't gotten output that makes sense; print out some debugging info
syserror("Error SMART Status command failed");
pout("Please get assistance from %s\n",PACKAGE_BUGREPORT);
pout("Register values returned from SMART Status command are:\n");
pout("CMD =0x%02x\n",(int)buff[0]);
pout("FR =0x%02x\n",(int)buff[1]);
pout("NS =0x%02x\n",(int)buff[2]);
pout("SC =0x%02x\n",(int)buff[3]);
pout("CL =0x%02x\n",(int)buff[4]);
pout("CH =0x%02x\n",(int)buff[5]);
pout("SEL=0x%02x\n",(int)buff[6]);
return -1;
}
if (copydata)
memcpy(data, buff, 512);
return 0;
}
// this implementation is derived from ata_command_interface with a header
// packing for highpoint linux driver ioctl interface
//
// ioctl(fd,HPTIO_CTL,buff)
// ^^^^^^^^^
//
// structure of hpt_buff
// +----+----+----+----+--------------------.....---------------------+
// | 1 | 2 | 3 | 4 | 5 |
// +----+----+----+----+--------------------.....---------------------+
//
// 1: The target controller [ int ( 4 Bytes ) ]
// 2: The channel of the target controllee [ int ( 4 Bytes ) ]
// 3: HDIO_ ioctl call [ int ( 4 Bytes ) ]
// available from ${LINUX_KERNEL_SOURCE}/Documentation/ioctl/hdio
// 4: the pmport that disk attached, [ int ( 4 Bytes ) ]
// if no pmport device, set to 1 or leave blank
// 5: data [ void * ( var leangth ) ]
//
#define STRANGE_BUFFER_LENGTH (4+512*0xf8)
int highpoint_command_interface(int device, smart_command_set command,
int select, char *data)
{
unsigned char hpt_buff[4*sizeof(int) + STRANGE_BUFFER_LENGTH];
unsigned int *hpt = (unsigned int *)hpt_buff;
unsigned char *buff = &hpt_buff[4*sizeof(int)];
int copydata = 0;
const int HDIO_DRIVE_CMD_OFFSET = 4;
memset(hpt_buff, 0, 4*sizeof(int) + STRANGE_BUFFER_LENGTH);
hpt[0] = con->hpt_data[0]; // controller id
hpt[1] = con->hpt_data[1]; // channel number
hpt[3] = con->hpt_data[2]; // pmport number
buff[0]=ATA_SMART_CMD;
switch (command){
case CHECK_POWER_MODE:
buff[0]=ATA_CHECK_POWER_MODE;
copydata=1;
break;
case READ_VALUES:
buff[2]=ATA_SMART_READ_VALUES;
buff[3]=1;
copydata=512;
break;
case READ_THRESHOLDS:
buff[2]=ATA_SMART_READ_THRESHOLDS;
buff[1]=buff[3]=1;
copydata=512;
break;
case READ_LOG:
buff[2]=ATA_SMART_READ_LOG_SECTOR;
buff[1]=select;
buff[3]=1;
copydata=512;
break;
case WRITE_LOG:
break;
case IDENTIFY:
buff[0]=ATA_IDENTIFY_DEVICE;
buff[3]=1;
copydata=512;
break;
case PIDENTIFY:
buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
buff[3]=1;
copydata=512;
break;
case ENABLE:
buff[2]=ATA_SMART_ENABLE;
buff[1]=1;
break;
case DISABLE:
buff[2]=ATA_SMART_DISABLE;
buff[1]=1;
break;
case STATUS:
buff[2]=ATA_SMART_STATUS;
break;
case AUTO_OFFLINE:
buff[2]=ATA_SMART_AUTO_OFFLINE;
buff[3]=select;
break;
case AUTOSAVE:
buff[2]=ATA_SMART_AUTOSAVE;
buff[3]=select;
break;
case IMMEDIATE_OFFLINE:
buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
buff[1]=select;
break;
case STATUS_CHECK:
buff[1]=ATA_SMART_STATUS;
break;
default:
pout("Unrecognized command %d in linux_highpoint_command_interface()\n"
"Please contact " PACKAGE_BUGREPORT "\n", command);
errno=ENOSYS;
return -1;
}
if (command==WRITE_LOG) {
unsigned char task[4*sizeof(int)+sizeof(ide_task_request_t)+512];
unsigned int *hpt = (unsigned int *)task;
ide_task_request_t *reqtask = (ide_task_request_t *)(&task[4*sizeof(int)]);
task_struct_t *taskfile = (task_struct_t *)reqtask->io_ports;
int retval;
memset(task, 0, sizeof(task));
hpt[0] = con->hpt_data[0]; // controller id
hpt[1] = con->hpt_data[1]; // channel number
hpt[3] = con->hpt_data[2]; // pmport number
hpt[2] = HDIO_DRIVE_TASKFILE; // real hd ioctl
taskfile->data = 0;
taskfile->feature = ATA_SMART_WRITE_LOG_SECTOR;
taskfile->sector_count = 1;
taskfile->sector_number = select;
taskfile->low_cylinder = 0x4f;
taskfile->high_cylinder = 0xc2;
taskfile->device_head = 0;
taskfile->command = ATA_SMART_CMD;
reqtask->data_phase = TASKFILE_OUT;
reqtask->req_cmd = IDE_DRIVE_TASK_OUT;
reqtask->out_size = 512;
reqtask->in_size = 0;
memcpy(task+sizeof(ide_task_request_t)+4*sizeof(int), data, 512);
if ((retval=ioctl(device, HPTIO_CTL, task))) {
if (retval==-EINVAL)
pout("Kernel lacks HDIO_DRIVE_TASKFILE support; compile kernel with CONFIG_IDE_TASKFILE_IO set\n");
return -1;
}
return 0;
}
if (command==STATUS_CHECK){
int retval;
unsigned const char normal_lo=0x4f, normal_hi=0xc2;
unsigned const char failed_lo=0xf4, failed_hi=0x2c;
buff[4]=normal_lo;
buff[5]=normal_hi;
hpt[2] = HDIO_DRIVE_TASK;
if ((retval=ioctl(device, HPTIO_CTL, hpt_buff))) {
if (retval==-EINVAL) {
pout("Error SMART Status command via HDIO_DRIVE_TASK failed");
pout("Rebuild older linux 2.2 kernels with HDIO_DRIVE_TASK support added\n");
}
else
syserror("Error SMART Status command failed");
return -1;
}
if (buff[4]==normal_lo && buff[5]==normal_hi)
return 0;
if (buff[4]==failed_lo && buff[5]==failed_hi)
return 1;
syserror("Error SMART Status command failed");
pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
pout("Register values returned from SMART Status command are:\n");
pout("CMD=0x%02x\n",(int)buff[0]);
pout("FR =0x%02x\n",(int)buff[1]);
pout("NS =0x%02x\n",(int)buff[2]);
pout("SC =0x%02x\n",(int)buff[3]);
pout("CL =0x%02x\n",(int)buff[4]);
pout("CH =0x%02x\n",(int)buff[5]);
pout("SEL=0x%02x\n",(int)buff[6]);
return -1;
}
#if 1
if (command==IDENTIFY || command==PIDENTIFY) {
unsigned char deviceid[4*sizeof(int)+512*sizeof(char)];
unsigned int *hpt = (unsigned int *)deviceid;
hpt[0] = con->hpt_data[0]; // controller id
hpt[1] = con->hpt_data[1]; // channel number
hpt[3] = con->hpt_data[2]; // pmport number
hpt[2] = HDIO_GET_IDENTITY;
if (!ioctl(device, HPTIO_CTL, deviceid) && (deviceid[4*sizeof(int)] & 0x8000))
buff[0]=(command==IDENTIFY)?ATA_IDENTIFY_PACKET_DEVICE:ATA_IDENTIFY_DEVICE;
}
#endif
hpt[2] = HDIO_DRIVE_CMD;
if ((ioctl(device, HPTIO_CTL, hpt_buff)))
return -1;
if (command==CHECK_POWER_MODE)
buff[HDIO_DRIVE_CMD_OFFSET]=buff[2];
if (copydata)
memcpy(data, buff+HDIO_DRIVE_CMD_OFFSET, copydata);
return 0;
}
// Utility function for printing warnings
void printwarning(smart_command_set command){
static int printed[4]={0,0,0,0};
const char* message=
"can not be passed through the 3ware 3w-xxxx driver. This can be fixed by\n"
"applying a simple 3w-xxxx driver patch that can be found here:\n"
PACKAGE_HOMEPAGE "\n"
"Alternatively, upgrade your 3w-xxxx driver to version 1.02.00.037 or greater.\n\n";
if (command==AUTO_OFFLINE && !printed[0]) {
printed[0]=1;
pout("The SMART AUTO-OFFLINE ENABLE command (smartmontools -o on option/Directive)\n%s", message);
}
else if (command==AUTOSAVE && !printed[1]) {
printed[1]=1;
pout("The SMART AUTOSAVE ENABLE command (smartmontools -S on option/Directive)\n%s", message);
}
else if (command==STATUS_CHECK && !printed[2]) {
printed[2]=1;
pout("The SMART RETURN STATUS return value (smartmontools -H option/Directive)\n%s", message);
}
else if (command==WRITE_LOG && !printed[3]) {
printed[3]=1;
pout("The SMART WRITE LOG command (smartmontools -t selective) only supported via char /dev/tw[ae] interface\n");
}
return;
}
// Guess device type (ata or scsi) based on device name (Linux
// specific) SCSI device name in linux can be sd, sr, scd, st, nst,
// osst, nosst and sg.
static const char * lin_dev_prefix = "/dev/";
static const char * lin_dev_ata_disk_plus = "h";
static const char * lin_dev_ata_devfs_disk_plus = "ide/";
static const char * lin_dev_scsi_devfs_disk_plus = "scsi/";
static const char * lin_dev_scsi_disk_plus = "s";
static const char * lin_dev_scsi_tape1 = "ns";
static const char * lin_dev_scsi_tape2 = "os";
static const char * lin_dev_scsi_tape3 = "nos";
static const char * lin_dev_3ware_9000_char = "twa";
static const char * lin_dev_3ware_678k_char = "twe";
static const char * lin_dev_cciss_dir = "cciss/";
int guess_device_type(const char * dev_name) {
int len;
int dev_prefix_len = strlen(lin_dev_prefix);
// if dev_name null, or string length zero
if (!dev_name || !(len = strlen(dev_name)))
return CONTROLLER_UNKNOWN;
// Remove the leading /dev/... if it's there
if (!strncmp(lin_dev_prefix, dev_name, dev_prefix_len)) {
if (len <= dev_prefix_len)
// if nothing else in the string, unrecognized
return CONTROLLER_UNKNOWN;
// else advance pointer to following characters
dev_name += dev_prefix_len;
}
// form /dev/h* or h*
if (!strncmp(lin_dev_ata_disk_plus, dev_name,
strlen(lin_dev_ata_disk_plus)))
return CONTROLLER_ATA;
// form /dev/ide/* or ide/*
if (!strncmp(lin_dev_ata_devfs_disk_plus, dev_name,
strlen(lin_dev_ata_devfs_disk_plus)))
return CONTROLLER_ATA;
// form /dev/s* or s*
if (!strncmp(lin_dev_scsi_disk_plus, dev_name,
strlen(lin_dev_scsi_disk_plus)))
return CONTROLLER_SCSI;
// form /dev/scsi/* or scsi/*
if (!strncmp(lin_dev_scsi_devfs_disk_plus, dev_name,
strlen(lin_dev_scsi_devfs_disk_plus)))
return CONTROLLER_SCSI;
// form /dev/ns* or ns*
if (!strncmp(lin_dev_scsi_tape1, dev_name,
strlen(lin_dev_scsi_tape1)))
return CONTROLLER_SCSI;
// form /dev/os* or os*
if (!strncmp(lin_dev_scsi_tape2, dev_name,
strlen(lin_dev_scsi_tape2)))
return CONTROLLER_SCSI;
// form /dev/nos* or nos*
if (!strncmp(lin_dev_scsi_tape3, dev_name,
strlen(lin_dev_scsi_tape3)))
return CONTROLLER_SCSI;
// form /dev/twa*
if (!strncmp(lin_dev_3ware_9000_char, dev_name,
strlen(lin_dev_3ware_9000_char)))
return CONTROLLER_3WARE_9000_CHAR;
// form /dev/twe*
if (!strncmp(lin_dev_3ware_678k_char, dev_name,
strlen(lin_dev_3ware_678k_char)))
return CONTROLLER_3WARE_678K_CHAR;
// form /dev/cciss*
if (!strncmp(lin_dev_cciss_dir, dev_name,
strlen(lin_dev_cciss_dir)))
return CONTROLLER_CCISS;
// we failed to recognize any of the forms
return CONTROLLER_UNKNOWN;
}
#if 0
[ed@firestorm ed]$ ls -l /dev/discs
total 0
lr-xr-xr-x 1 root root 30 Dec 31 1969 disc0 -> ../ide/host2/bus0/target0/lun0/
lr-xr-xr-x 1 root root 30 Dec 31 1969 disc1 -> ../ide/host2/bus1/target0/lun0/
[ed@firestorm ed]$ ls -l dev/ide/host*/bus*/target*/lun*/disc
ls: dev/ide/host*/bus*/target*/lun*/disc: No such file or directory
[ed@firestorm ed]$ ls -l /dev/ide/host*/bus*/target*/lun*/disc
brw------- 1 root root 33, 0 Dec 31 1969 /dev/ide/host2/bus0/target0/lun0/disc
brw------- 1 root root 34, 0 Dec 31 1969 /dev/ide/host2/bus1/target0/lun0/disc
[ed@firestorm ed]$ ls -l /dev/ide/c*b*t*u*
ls: /dev/ide/c*b*t*u*: No such file or directory
[ed@firestorm ed]$
Script done on Fri Nov 7 13:46:28 2003
#endif
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