/* * os_linux.c * * Home page of code is: http://smartmontools.sourceforge.net * * Copyright (C) 2003-7 Bruce Allen * Copyright (C) 2003-7 Doug Gilbert * * Parts of this file are derived from code that was * * Written By: Adam Radford * Modifications By: Joel Jacobson * Arnaldo Carvalho de Melo * Brad Strand * * Copyright (C) 1999-2003 3ware Inc. * * Kernel compatablity By: Andre Hedrick * Non-Copyright (C) 2000 Andre Hedrick * * Other ars of this file are derived from code that was * * Copyright (C) 1999-2000 Michael Cornwell * Copyright (C) 2000 Andre Hedrick * * 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 #include #include #include #include #include #include #include #include #include #ifndef makedev // old versions of types.h do not include sysmacros.h #include #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; i1023) 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(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 : ""); 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 : ""); 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" " 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