1: /*
2: * os_linux.cpp
3: *
4: * Home page of code is: http://smartmontools.sourceforge.net
5: *
6: * Copyright (C) 2003-11 Bruce Allen <smartmontools-support@lists.sourceforge.net>
7: * Copyright (C) 2003-11 Doug Gilbert <dgilbert@interlog.com>
8: * Copyright (C) 2008 Hank Wu <hank@areca.com.tw>
9: * Copyright (C) 2008 Oliver Bock <brevilo@users.sourceforge.net>
10: * Copyright (C) 2008-11 Christian Franke <smartmontools-support@lists.sourceforge.net>
11: * Copyright (C) 2008 Jordan Hargrave <jordan_hargrave@dell.com>
12: *
13: * Parts of this file are derived from code that was
14: *
15: * Written By: Adam Radford <linux@3ware.com>
16: * Modifications By: Joel Jacobson <linux@3ware.com>
17: * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
18: * Brad Strand <linux@3ware.com>
19: *
20: * Copyright (C) 1999-2003 3ware Inc.
21: *
22: * Kernel compatablity By: Andre Hedrick <andre@suse.com>
23: * Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
24: *
25: * Other ars of this file are derived from code that was
26: *
27: * Copyright (C) 1999-2000 Michael Cornwell <cornwell@acm.org>
28: * Copyright (C) 2000 Andre Hedrick <andre@linux-ide.org>
29: *
30: * This program is free software; you can redistribute it and/or modify
31: * it under the terms of the GNU General Public License as published by
32: * the Free Software Foundation; either version 2, or (at your option)
33: * any later version.
34: *
35: * You should have received a copy of the GNU General Public License
36: * (for example COPYING); If not, see <http://www.gnu.org/licenses/>.
37: *
38: * This code was originally developed as a Senior Thesis by Michael Cornwell
39: * at the Concurrent Systems Laboratory (now part of the Storage Systems
40: * Research Center), Jack Baskin School of Engineering, University of
41: * California, Santa Cruz. http://ssrc.soe.ucsc.edu/
42: *
43: */
44:
45: // This file contains the linux-specific IOCTL parts of
46: // smartmontools. It includes one interface routine for ATA devices,
47: // one for SCSI devices, and one for ATA devices behind escalade
48: // controllers.
49:
50: #include "config.h"
51:
52: #include <errno.h>
53: #include <fcntl.h>
54: #include <glob.h>
55:
56: #include <scsi/scsi.h>
57: #include <scsi/scsi_ioctl.h>
58: #include <scsi/sg.h>
59: #include <stdlib.h>
60: #include <string.h>
61: #include <sys/ioctl.h>
62: #include <sys/stat.h>
63: #include <sys/utsname.h>
64: #include <unistd.h>
65: #include <stddef.h> // for offsetof()
66: #include <sys/uio.h>
67: #include <sys/types.h>
68: #ifndef makedev // old versions of types.h do not include sysmacros.h
69: #include <sys/sysmacros.h>
70: #endif
71: #ifdef WITH_SELINUX
72: #include <selinux/selinux.h>
73: #endif
74:
75: #include "int64.h"
76: #include "atacmds.h"
77: #include "os_linux.h"
78: #include "scsicmds.h"
79: #include "utility.h"
80: #include "cciss.h"
81: #include "megaraid.h"
82:
83: #include "dev_interface.h"
84: #include "dev_ata_cmd_set.h"
85:
86: #ifndef ENOTSUP
87: #define ENOTSUP ENOSYS
88: #endif
89:
90: #define ARGUSED(x) ((void)(x))
91:
92: const char * os_linux_cpp_cvsid = "$Id: os_linux.cpp,v 1.1.1.1 2012/02/21 16:32:16 misho Exp $"
93: OS_LINUX_H_CVSID;
94:
95:
96: namespace os_linux { // No need to publish anything, name provided for Doxygen
97:
98: /////////////////////////////////////////////////////////////////////////////
99: /// Shared open/close routines
100:
101: class linux_smart_device
102: : virtual public /*implements*/ smart_device
103: {
104: public:
105: explicit linux_smart_device(int flags, int retry_flags = -1)
106: : smart_device(never_called),
107: m_fd(-1),
108: m_flags(flags), m_retry_flags(retry_flags)
109: { }
110:
111: virtual ~linux_smart_device() throw();
112:
113: virtual bool is_open() const;
114:
115: virtual bool open();
116:
117: virtual bool close();
118:
119: protected:
120: /// Return filedesc for derived classes.
121: int get_fd() const
122: { return m_fd; }
123:
124: private:
125: int m_fd; ///< filedesc, -1 if not open.
126: int m_flags; ///< Flags for ::open()
127: int m_retry_flags; ///< Flags to retry ::open(), -1 if no retry
128: };
129:
130:
131: linux_smart_device::~linux_smart_device() throw()
132: {
133: if (m_fd >= 0)
134: ::close(m_fd);
135: }
136:
137: bool linux_smart_device::is_open() const
138: {
139: return (m_fd >= 0);
140: }
141:
142: bool linux_smart_device::open()
143: {
144: m_fd = ::open(get_dev_name(), m_flags);
145:
146: if (m_fd < 0 && errno == EROFS && m_retry_flags != -1)
147: // Retry
148: m_fd = ::open(get_dev_name(), m_retry_flags);
149:
150: if (m_fd < 0) {
151: if (errno == EBUSY && (m_flags & O_EXCL))
152: // device is locked
153: return set_err(EBUSY,
154: "The requested controller is used exclusively by another process!\n"
155: "(e.g. smartctl or smartd)\n"
156: "Please quit the impeding process or try again later...");
157: return set_err((errno==ENOENT || errno==ENOTDIR) ? ENODEV : errno);
158: }
159:
160: if (m_fd >= 0) {
161: // sets FD_CLOEXEC on the opened device file descriptor. The
162: // descriptor is otherwise leaked to other applications (mail
163: // sender) which may be considered a security risk and may result
164: // in AVC messages on SELinux-enabled systems.
165: if (-1 == fcntl(m_fd, F_SETFD, FD_CLOEXEC))
166: // TODO: Provide an error printing routine in class smart_interface
167: pout("fcntl(set FD_CLOEXEC) failed, errno=%d [%s]\n", errno, strerror(errno));
168: }
169:
170: return true;
171: }
172:
173: // equivalent to close(file descriptor)
174: bool linux_smart_device::close()
175: {
176: int fd = m_fd; m_fd = -1;
177: if (::close(fd) < 0)
178: return set_err(errno);
179: return true;
180: }
181:
182: // examples for smartctl
183: static const char smartctl_examples[] =
184: "=================================================== SMARTCTL EXAMPLES =====\n\n"
185: " smartctl --all /dev/hda (Prints all SMART information)\n\n"
186: " smartctl --smart=on --offlineauto=on --saveauto=on /dev/hda\n"
187: " (Enables SMART on first disk)\n\n"
188: " smartctl --test=long /dev/hda (Executes extended disk self-test)\n\n"
189: " smartctl --attributes --log=selftest --quietmode=errorsonly /dev/hda\n"
190: " (Prints Self-Test & Attribute errors)\n"
191: " smartctl --all --device=3ware,2 /dev/sda\n"
192: " smartctl --all --device=3ware,2 /dev/twe0\n"
193: " smartctl --all --device=3ware,2 /dev/twa0\n"
194: " smartctl --all --device=3ware,2 /dev/twl0\n"
195: " (Prints all SMART info for 3rd ATA disk on 3ware RAID controller)\n"
196: " smartctl --all --device=hpt,1/1/3 /dev/sda\n"
197: " (Prints all SMART info for the SATA disk attached to the 3rd PMPort\n"
198: " of the 1st channel on the 1st HighPoint RAID controller)\n"
199: " smartctl --all --device=areca,3 /dev/sg2\n"
200: " (Prints all SMART info for 3rd ATA disk on Areca RAID controller)\n"
201: ;
202:
203:
204: /////////////////////////////////////////////////////////////////////////////
205: /// Linux ATA support
206:
207: class linux_ata_device
208: : public /*implements*/ ata_device_with_command_set,
209: public /*extends*/ linux_smart_device
210: {
211: public:
212: linux_ata_device(smart_interface * intf, const char * dev_name, const char * req_type);
213:
214: protected:
215: virtual int ata_command_interface(smart_command_set command, int select, char * data);
216: };
217:
218: linux_ata_device::linux_ata_device(smart_interface * intf, const char * dev_name, const char * req_type)
219: : smart_device(intf, dev_name, "ata", req_type),
220: linux_smart_device(O_RDONLY | O_NONBLOCK)
221: {
222: }
223:
224: // PURPOSE
225: // This is an interface routine meant to isolate the OS dependent
226: // parts of the code, and to provide a debugging interface. Each
227: // different port and OS needs to provide it's own interface. This
228: // is the linux one.
229: // DETAILED DESCRIPTION OF ARGUMENTS
230: // device: is the file descriptor provided by open()
231: // command: defines the different operations.
232: // select: additional input data if needed (which log, which type of
233: // self-test).
234: // data: location to write output data, if needed (512 bytes).
235: // Note: not all commands use all arguments.
236: // RETURN VALUES
237: // -1 if the command failed
238: // 0 if the command succeeded,
239: // STATUS_CHECK routine:
240: // -1 if the command failed
241: // 0 if the command succeeded and disk SMART status is "OK"
242: // 1 if the command succeeded and disk SMART status is "FAILING"
243:
244:
245: #define BUFFER_LENGTH (4+512)
246:
247: int linux_ata_device::ata_command_interface(smart_command_set command, int select, char * data)
248: {
249: unsigned char buff[BUFFER_LENGTH];
250: // positive: bytes to write to caller. negative: bytes to READ from
251: // caller. zero: non-data command
252: int copydata=0;
253:
254: const int HDIO_DRIVE_CMD_OFFSET = 4;
255:
256: // See struct hd_drive_cmd_hdr in hdreg.h. Before calling ioctl()
257: // buff[0]: ATA COMMAND CODE REGISTER
258: // buff[1]: ATA SECTOR NUMBER REGISTER == LBA LOW REGISTER
259: // buff[2]: ATA FEATURES REGISTER
260: // buff[3]: ATA SECTOR COUNT REGISTER
261:
262: // Note that on return:
263: // buff[2] contains the ATA SECTOR COUNT REGISTER
264:
265: // clear out buff. Large enough for HDIO_DRIVE_CMD (4+512 bytes)
266: memset(buff, 0, BUFFER_LENGTH);
267:
268: buff[0]=ATA_SMART_CMD;
269: switch (command){
270: case CHECK_POWER_MODE:
271: buff[0]=ATA_CHECK_POWER_MODE;
272: copydata=1;
273: break;
274: case READ_VALUES:
275: buff[2]=ATA_SMART_READ_VALUES;
276: buff[3]=1;
277: copydata=512;
278: break;
279: case READ_THRESHOLDS:
280: buff[2]=ATA_SMART_READ_THRESHOLDS;
281: buff[1]=buff[3]=1;
282: copydata=512;
283: break;
284: case READ_LOG:
285: buff[2]=ATA_SMART_READ_LOG_SECTOR;
286: buff[1]=select;
287: buff[3]=1;
288: copydata=512;
289: break;
290: case WRITE_LOG:
291: break;
292: case IDENTIFY:
293: buff[0]=ATA_IDENTIFY_DEVICE;
294: buff[3]=1;
295: copydata=512;
296: break;
297: case PIDENTIFY:
298: buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
299: buff[3]=1;
300: copydata=512;
301: break;
302: case ENABLE:
303: buff[2]=ATA_SMART_ENABLE;
304: buff[1]=1;
305: break;
306: case DISABLE:
307: buff[2]=ATA_SMART_DISABLE;
308: buff[1]=1;
309: break;
310: case STATUS:
311: // this command only says if SMART is working. It could be
312: // replaced with STATUS_CHECK below.
313: buff[2]=ATA_SMART_STATUS;
314: break;
315: case AUTO_OFFLINE:
316: // NOTE: According to ATAPI 4 and UP, this command is obsolete
317: // select == 241 for enable but no data transfer. Use TASK ioctl.
318: buff[1]=ATA_SMART_AUTO_OFFLINE;
319: buff[2]=select;
320: break;
321: case AUTOSAVE:
322: // select == 248 for enable but no data transfer. Use TASK ioctl.
323: buff[1]=ATA_SMART_AUTOSAVE;
324: buff[2]=select;
325: break;
326: case IMMEDIATE_OFFLINE:
327: buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
328: buff[1]=select;
329: break;
330: case STATUS_CHECK:
331: // This command uses HDIO_DRIVE_TASK and has different syntax than
332: // the other commands.
333: buff[1]=ATA_SMART_STATUS;
334: break;
335: default:
336: pout("Unrecognized command %d in linux_ata_command_interface()\n"
337: "Please contact " PACKAGE_BUGREPORT "\n", command);
338: errno=ENOSYS;
339: return -1;
340: }
341:
342: // This command uses the HDIO_DRIVE_TASKFILE ioctl(). This is the
343: // only ioctl() that can be used to WRITE data to the disk.
344: if (command==WRITE_LOG) {
345: unsigned char task[sizeof(ide_task_request_t)+512];
346: ide_task_request_t *reqtask=(ide_task_request_t *) task;
347: task_struct_t *taskfile=(task_struct_t *) reqtask->io_ports;
348: int retval;
349:
350: memset(task, 0, sizeof(task));
351:
352: taskfile->data = 0;
353: taskfile->feature = ATA_SMART_WRITE_LOG_SECTOR;
354: taskfile->sector_count = 1;
355: taskfile->sector_number = select;
356: taskfile->low_cylinder = 0x4f;
357: taskfile->high_cylinder = 0xc2;
358: taskfile->device_head = 0;
359: taskfile->command = ATA_SMART_CMD;
360:
361: reqtask->data_phase = TASKFILE_OUT;
362: reqtask->req_cmd = IDE_DRIVE_TASK_OUT;
363: reqtask->out_size = 512;
364: reqtask->in_size = 0;
365:
366: // copy user data into the task request structure
367: memcpy(task+sizeof(ide_task_request_t), data, 512);
368:
369: if ((retval=ioctl(get_fd(), HDIO_DRIVE_TASKFILE, task))) {
370: if (retval==-EINVAL)
371: pout("Kernel lacks HDIO_DRIVE_TASKFILE support; compile kernel with CONFIG_IDE_TASKFILE_IO set\n");
372: return -1;
373: }
374: return 0;
375: }
376:
377: // There are two different types of ioctls(). The HDIO_DRIVE_TASK
378: // one is this:
379: if (command==STATUS_CHECK || command==AUTOSAVE || command==AUTO_OFFLINE){
380: int retval;
381:
382: // NOT DOCUMENTED in /usr/src/linux/include/linux/hdreg.h. You
383: // have to read the IDE driver source code. Sigh.
384: // buff[0]: ATA COMMAND CODE REGISTER
385: // buff[1]: ATA FEATURES REGISTER
386: // buff[2]: ATA SECTOR_COUNT
387: // buff[3]: ATA SECTOR NUMBER
388: // buff[4]: ATA CYL LO REGISTER
389: // buff[5]: ATA CYL HI REGISTER
390: // buff[6]: ATA DEVICE HEAD
391:
392: unsigned const char normal_lo=0x4f, normal_hi=0xc2;
393: unsigned const char failed_lo=0xf4, failed_hi=0x2c;
394: buff[4]=normal_lo;
395: buff[5]=normal_hi;
396:
397: if ((retval=ioctl(get_fd(), HDIO_DRIVE_TASK, buff))) {
398: if (retval==-EINVAL) {
399: pout("Error SMART Status command via HDIO_DRIVE_TASK failed");
400: pout("Rebuild older linux 2.2 kernels with HDIO_DRIVE_TASK support added\n");
401: }
402: else
403: syserror("Error SMART Status command failed");
404: return -1;
405: }
406:
407: // Cyl low and Cyl high unchanged means "Good SMART status"
408: if (buff[4]==normal_lo && buff[5]==normal_hi)
409: return 0;
410:
411: // These values mean "Bad SMART status"
412: if (buff[4]==failed_lo && buff[5]==failed_hi)
413: return 1;
414:
415: // We haven't gotten output that makes sense; print out some debugging info
416: syserror("Error SMART Status command failed");
417: pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
418: pout("Register values returned from SMART Status command are:\n");
419: pout("ST =0x%02x\n",(int)buff[0]);
420: pout("ERR=0x%02x\n",(int)buff[1]);
421: pout("NS =0x%02x\n",(int)buff[2]);
422: pout("SC =0x%02x\n",(int)buff[3]);
423: pout("CL =0x%02x\n",(int)buff[4]);
424: pout("CH =0x%02x\n",(int)buff[5]);
425: pout("SEL=0x%02x\n",(int)buff[6]);
426: return -1;
427: }
428:
429: #if 1
430: // Note to people doing ports to other OSes -- don't worry about
431: // this block -- you can safely ignore it. I have put it here
432: // because under linux when you do IDENTIFY DEVICE to a packet
433: // device, it generates an ugly kernel syslog error message. This
434: // is harmless but frightens users. So this block detects packet
435: // devices and make IDENTIFY DEVICE fail "nicely" without a syslog
436: // error message.
437: //
438: // If you read only the ATA specs, it appears as if a packet device
439: // *might* respond to the IDENTIFY DEVICE command. This is
440: // misleading - it's because around the time that SFF-8020 was
441: // incorporated into the ATA-3/4 standard, the ATA authors were
442: // sloppy. See SFF-8020 and you will see that ATAPI devices have
443: // *always* had IDENTIFY PACKET DEVICE as a mandatory part of their
444: // command set, and return 'Command Aborted' to IDENTIFY DEVICE.
445: if (command==IDENTIFY || command==PIDENTIFY){
446: unsigned short deviceid[256];
447: // check the device identity, as seen when the system was booted
448: // or the device was FIRST registered. This will not be current
449: // if the user has subsequently changed some of the parameters. If
450: // device is a packet device, swap the command interpretations.
451: if (!ioctl(get_fd(), HDIO_GET_IDENTITY, deviceid) && (deviceid[0] & 0x8000))
452: buff[0]=(command==IDENTIFY)?ATA_IDENTIFY_PACKET_DEVICE:ATA_IDENTIFY_DEVICE;
453: }
454: #endif
455:
456: // We are now doing the HDIO_DRIVE_CMD type ioctl.
457: if ((ioctl(get_fd(), HDIO_DRIVE_CMD, buff)))
458: return -1;
459:
460: // CHECK POWER MODE command returns information in the Sector Count
461: // register (buff[3]). Copy to return data buffer.
462: if (command==CHECK_POWER_MODE)
463: buff[HDIO_DRIVE_CMD_OFFSET]=buff[2];
464:
465: // if the command returns data then copy it back
466: if (copydata)
467: memcpy(data, buff+HDIO_DRIVE_CMD_OFFSET, copydata);
468:
469: return 0;
470: }
471:
472: // >>>>>> Start of general SCSI specific linux code
473:
474: /* Linux specific code.
475: * Historically smartmontools (and smartsuite before it) used the
476: * SCSI_IOCTL_SEND_COMMAND ioctl which is available to all linux device
477: * nodes that use the SCSI subsystem. A better interface has been available
478: * via the SCSI generic (sg) driver but this involves the extra step of
479: * mapping disk devices (e.g. /dev/sda) to the corresponding sg device
480: * (e.g. /dev/sg2). In the linux kernel 2.6 series most of the facilities of
481: * the sg driver have become available via the SG_IO ioctl which is available
482: * on all SCSI devices (on SCSI tape devices from lk 2.6.6).
483: * So the strategy below is to find out if the SG_IO ioctl is available and
484: * if so use it; failing that use the older SCSI_IOCTL_SEND_COMMAND ioctl.
485: * Should work in 2.0, 2.2, 2.4 and 2.6 series linux kernels. */
486:
487: #define MAX_DXFER_LEN 1024 /* can be increased if necessary */
488: #define SEND_IOCTL_RESP_SENSE_LEN 16 /* ioctl limitation */
489: #define SG_IO_RESP_SENSE_LEN 64 /* large enough see buffer */
490: #define LSCSI_DRIVER_MASK 0xf /* mask out "suggestions" */
491: #define LSCSI_DRIVER_SENSE 0x8 /* alternate CHECK CONDITION indication */
492: #define LSCSI_DID_ERROR 0x7 /* Need to work around aacraid driver quirk */
493: #define LSCSI_DRIVER_TIMEOUT 0x6
494: #define LSCSI_DID_TIME_OUT 0x3
495: #define LSCSI_DID_BUS_BUSY 0x2
496: #define LSCSI_DID_NO_CONNECT 0x1
497:
498: #ifndef SCSI_IOCTL_SEND_COMMAND
499: #define SCSI_IOCTL_SEND_COMMAND 1
500: #endif
501:
502: #define SG_IO_PRESENT_UNKNOWN 0
503: #define SG_IO_PRESENT_YES 1
504: #define SG_IO_PRESENT_NO 2
505:
506: static int sg_io_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report,
507: int unknown);
508: static int sisc_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report);
509:
510: static int sg_io_state = SG_IO_PRESENT_UNKNOWN;
511:
512: /* Preferred implementation for issuing SCSI commands in linux. This
513: * function uses the SG_IO ioctl. Return 0 if command issued successfully
514: * (various status values should still be checked). If the SCSI command
515: * cannot be issued then a negative errno value is returned. */
516: static int sg_io_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report,
517: int unknown)
518: {
519: #ifndef SG_IO
520: ARGUSED(dev_fd); ARGUSED(iop); ARGUSED(report);
521: return -ENOTTY;
522: #else
523: struct sg_io_hdr io_hdr;
524:
525: if (report > 0) {
526: int k, j;
527: const unsigned char * ucp = iop->cmnd;
528: const char * np;
529: char buff[256];
530: const int sz = (int)sizeof(buff);
531:
532: np = scsi_get_opcode_name(ucp[0]);
533: j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
534: for (k = 0; k < (int)iop->cmnd_len; ++k)
535: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
536: if ((report > 1) &&
537: (DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
538: int trunc = (iop->dxfer_len > 256) ? 1 : 0;
539:
540: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n Outgoing "
541: "data, len=%d%s:\n", (int)iop->dxfer_len,
542: (trunc ? " [only first 256 bytes shown]" : ""));
543: dStrHex((const char *)iop->dxferp,
544: (trunc ? 256 : iop->dxfer_len) , 1);
545: }
546: else
547: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
548: pout("%s", buff);
549: }
550: memset(&io_hdr, 0, sizeof(struct sg_io_hdr));
551: io_hdr.interface_id = 'S';
552: io_hdr.cmd_len = iop->cmnd_len;
553: io_hdr.mx_sb_len = iop->max_sense_len;
554: io_hdr.dxfer_len = iop->dxfer_len;
555: io_hdr.dxferp = iop->dxferp;
556: io_hdr.cmdp = iop->cmnd;
557: io_hdr.sbp = iop->sensep;
558: /* sg_io_hdr interface timeout has millisecond units. Timeout of 0
559: defaults to 60 seconds. */
560: io_hdr.timeout = ((0 == iop->timeout) ? 60 : iop->timeout) * 1000;
561: switch (iop->dxfer_dir) {
562: case DXFER_NONE:
563: io_hdr.dxfer_direction = SG_DXFER_NONE;
564: break;
565: case DXFER_FROM_DEVICE:
566: io_hdr.dxfer_direction = SG_DXFER_FROM_DEV;
567: break;
568: case DXFER_TO_DEVICE:
569: io_hdr.dxfer_direction = SG_DXFER_TO_DEV;
570: break;
571: default:
572: pout("do_scsi_cmnd_io: bad dxfer_dir\n");
573: return -EINVAL;
574: }
575: iop->resp_sense_len = 0;
576: iop->scsi_status = 0;
577: iop->resid = 0;
578: if (ioctl(dev_fd, SG_IO, &io_hdr) < 0) {
579: if (report && (! unknown))
580: pout(" SG_IO ioctl failed, errno=%d [%s]\n", errno,
581: strerror(errno));
582: return -errno;
583: }
584: iop->resid = io_hdr.resid;
585: iop->scsi_status = io_hdr.status;
586: if (report > 0) {
587: pout(" scsi_status=0x%x, host_status=0x%x, driver_status=0x%x\n"
588: " info=0x%x duration=%d milliseconds resid=%d\n", io_hdr.status,
589: io_hdr.host_status, io_hdr.driver_status, io_hdr.info,
590: io_hdr.duration, io_hdr.resid);
591: if (report > 1) {
592: if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
593: int trunc, len;
594:
595: len = iop->dxfer_len - iop->resid;
596: trunc = (len > 256) ? 1 : 0;
597: if (len > 0) {
598: pout(" Incoming data, len=%d%s:\n", len,
599: (trunc ? " [only first 256 bytes shown]" : ""));
600: dStrHex((const char*)iop->dxferp, (trunc ? 256 : len),
601: 1);
602: } else
603: pout(" Incoming data trimmed to nothing by resid\n");
604: }
605: }
606: }
607:
608: if (io_hdr.info | SG_INFO_CHECK) { /* error or warning */
609: int masked_driver_status = (LSCSI_DRIVER_MASK & io_hdr.driver_status);
610:
611: if (0 != io_hdr.host_status) {
612: if ((LSCSI_DID_NO_CONNECT == io_hdr.host_status) ||
613: (LSCSI_DID_BUS_BUSY == io_hdr.host_status) ||
614: (LSCSI_DID_TIME_OUT == io_hdr.host_status))
615: return -ETIMEDOUT;
616: else
617: /* Check for DID_ERROR - workaround for aacraid driver quirk */
618: if (LSCSI_DID_ERROR != io_hdr.host_status) {
619: return -EIO; /* catch all if not DID_ERR */
620: }
621: }
622: if (0 != masked_driver_status) {
623: if (LSCSI_DRIVER_TIMEOUT == masked_driver_status)
624: return -ETIMEDOUT;
625: else if (LSCSI_DRIVER_SENSE != masked_driver_status)
626: return -EIO;
627: }
628: if (LSCSI_DRIVER_SENSE == masked_driver_status)
629: iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
630: iop->resp_sense_len = io_hdr.sb_len_wr;
631: if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
632: iop->sensep && (iop->resp_sense_len > 0)) {
633: if (report > 1) {
634: pout(" >>> Sense buffer, len=%d:\n",
635: (int)iop->resp_sense_len);
636: dStrHex((const char *)iop->sensep, iop->resp_sense_len , 1);
637: }
638: }
639: if (report) {
640: if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
641: if ((iop->sensep[0] & 0x7f) > 0x71)
642: pout(" status=%x: [desc] sense_key=%x asc=%x ascq=%x\n",
643: iop->scsi_status, iop->sensep[1] & 0xf,
644: iop->sensep[2], iop->sensep[3]);
645: else
646: pout(" status=%x: sense_key=%x asc=%x ascq=%x\n",
647: iop->scsi_status, iop->sensep[2] & 0xf,
648: iop->sensep[12], iop->sensep[13]);
649: }
650: else
651: pout(" status=0x%x\n", iop->scsi_status);
652: }
653: }
654: return 0;
655: #endif
656: }
657:
658: struct linux_ioctl_send_command
659: {
660: int inbufsize;
661: int outbufsize;
662: UINT8 buff[MAX_DXFER_LEN + 16];
663: };
664:
665: /* The Linux SCSI_IOCTL_SEND_COMMAND ioctl is primitive and it doesn't
666: * support: CDB length (guesses it from opcode), resid and timeout.
667: * Patches in Linux 2.4.21 and 2.5.70 to extend SEND DIAGNOSTIC timeout
668: * to 2 hours in order to allow long foreground extended self tests. */
669: static int sisc_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop, int report)
670: {
671: struct linux_ioctl_send_command wrk;
672: int status, buff_offset;
673: size_t len;
674:
675: memcpy(wrk.buff, iop->cmnd, iop->cmnd_len);
676: buff_offset = iop->cmnd_len;
677: if (report > 0) {
678: int k, j;
679: const unsigned char * ucp = iop->cmnd;
680: const char * np;
681: char buff[256];
682: const int sz = (int)sizeof(buff);
683:
684: np = scsi_get_opcode_name(ucp[0]);
685: j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
686: for (k = 0; k < (int)iop->cmnd_len; ++k)
687: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
688: if ((report > 1) &&
689: (DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
690: int trunc = (iop->dxfer_len > 256) ? 1 : 0;
691:
692: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n Outgoing "
693: "data, len=%d%s:\n", (int)iop->dxfer_len,
694: (trunc ? " [only first 256 bytes shown]" : ""));
695: dStrHex((const char *)iop->dxferp,
696: (trunc ? 256 : iop->dxfer_len) , 1);
697: }
698: else
699: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
700: pout("%s", buff);
701: }
702: switch (iop->dxfer_dir) {
703: case DXFER_NONE:
704: wrk.inbufsize = 0;
705: wrk.outbufsize = 0;
706: break;
707: case DXFER_FROM_DEVICE:
708: wrk.inbufsize = 0;
709: if (iop->dxfer_len > MAX_DXFER_LEN)
710: return -EINVAL;
711: wrk.outbufsize = iop->dxfer_len;
712: break;
713: case DXFER_TO_DEVICE:
714: if (iop->dxfer_len > MAX_DXFER_LEN)
715: return -EINVAL;
716: memcpy(wrk.buff + buff_offset, iop->dxferp, iop->dxfer_len);
717: wrk.inbufsize = iop->dxfer_len;
718: wrk.outbufsize = 0;
719: break;
720: default:
721: pout("do_scsi_cmnd_io: bad dxfer_dir\n");
722: return -EINVAL;
723: }
724: iop->resp_sense_len = 0;
725: iop->scsi_status = 0;
726: iop->resid = 0;
727: status = ioctl(dev_fd, SCSI_IOCTL_SEND_COMMAND, &wrk);
728: if (-1 == status) {
729: if (report)
730: pout(" SCSI_IOCTL_SEND_COMMAND ioctl failed, errno=%d [%s]\n",
731: errno, strerror(errno));
732: return -errno;
733: }
734: if (0 == status) {
735: if (report > 0)
736: pout(" status=0\n");
737: if (DXFER_FROM_DEVICE == iop->dxfer_dir) {
738: memcpy(iop->dxferp, wrk.buff, iop->dxfer_len);
739: if (report > 1) {
740: int trunc = (iop->dxfer_len > 256) ? 1 : 0;
741:
742: pout(" Incoming data, len=%d%s:\n", (int)iop->dxfer_len,
743: (trunc ? " [only first 256 bytes shown]" : ""));
744: dStrHex((const char*)iop->dxferp,
745: (trunc ? 256 : iop->dxfer_len) , 1);
746: }
747: }
748: return 0;
749: }
750: iop->scsi_status = status & 0x7e; /* bits 0 and 7 used to be for vendors */
751: if (LSCSI_DRIVER_SENSE == ((status >> 24) & 0xf))
752: iop->scsi_status = SCSI_STATUS_CHECK_CONDITION;
753: len = (SEND_IOCTL_RESP_SENSE_LEN < iop->max_sense_len) ?
754: SEND_IOCTL_RESP_SENSE_LEN : iop->max_sense_len;
755: if ((SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) &&
756: iop->sensep && (len > 0)) {
757: memcpy(iop->sensep, wrk.buff, len);
758: iop->resp_sense_len = len;
759: if (report > 1) {
760: pout(" >>> Sense buffer, len=%d:\n", (int)len);
761: dStrHex((const char *)wrk.buff, len , 1);
762: }
763: }
764: if (report) {
765: if (SCSI_STATUS_CHECK_CONDITION == iop->scsi_status) {
766: pout(" status=%x: sense_key=%x asc=%x ascq=%x\n", status & 0xff,
767: wrk.buff[2] & 0xf, wrk.buff[12], wrk.buff[13]);
768: }
769: else
770: pout(" status=0x%x\n", status);
771: }
772: if (iop->scsi_status > 0)
773: return 0;
774: else {
775: if (report > 0)
776: pout(" ioctl status=0x%x but scsi status=0, fail with EIO\n",
777: status);
778: return -EIO; /* give up, assume no device there */
779: }
780: }
781:
782: /* SCSI command transmission interface function, linux version.
783: * Returns 0 if SCSI command successfully launched and response
784: * received. Even when 0 is returned the caller should check
785: * scsi_cmnd_io::scsi_status for SCSI defined errors and warnings
786: * (e.g. CHECK CONDITION). If the SCSI command could not be issued
787: * (e.g. device not present or timeout) or some other problem
788: * (e.g. timeout) then returns a negative errno value */
789: static int do_normal_scsi_cmnd_io(int dev_fd, struct scsi_cmnd_io * iop,
790: int report)
791: {
792: int res;
793:
794: /* implementation relies on static sg_io_state variable. If not
795: * previously set tries the SG_IO ioctl. If that succeeds assume
796: * that SG_IO ioctl functional. If it fails with an errno value
797: * other than ENODEV (no device) or permission then assume
798: * SCSI_IOCTL_SEND_COMMAND is the only option. */
799: switch (sg_io_state) {
800: case SG_IO_PRESENT_UNKNOWN:
801: /* ignore report argument */
802: if (0 == (res = sg_io_cmnd_io(dev_fd, iop, report, 1))) {
803: sg_io_state = SG_IO_PRESENT_YES;
804: return 0;
805: } else if ((-ENODEV == res) || (-EACCES == res) || (-EPERM == res))
806: return res; /* wait until we see a device */
807: sg_io_state = SG_IO_PRESENT_NO;
808: /* drop through by design */
809: case SG_IO_PRESENT_NO:
810: return sisc_cmnd_io(dev_fd, iop, report);
811: case SG_IO_PRESENT_YES:
812: return sg_io_cmnd_io(dev_fd, iop, report, 0);
813: default:
814: pout(">>>> do_scsi_cmnd_io: bad sg_io_state=%d\n", sg_io_state);
815: sg_io_state = SG_IO_PRESENT_UNKNOWN;
816: return -EIO; /* report error and reset state */
817: }
818: }
819:
820: // >>>>>> End of general SCSI specific linux code
821:
822: /////////////////////////////////////////////////////////////////////////////
823: /// Standard SCSI support
824:
825: class linux_scsi_device
826: : public /*implements*/ scsi_device,
827: public /*extends*/ linux_smart_device
828: {
829: public:
830: linux_scsi_device(smart_interface * intf, const char * dev_name,
831: const char * req_type, bool scanning = false);
832:
833: virtual smart_device * autodetect_open();
834:
835: virtual bool scsi_pass_through(scsi_cmnd_io * iop);
836:
837: private:
838: bool m_scanning; ///< true if created within scan_smart_devices
839: };
840:
841: linux_scsi_device::linux_scsi_device(smart_interface * intf,
842: const char * dev_name, const char * req_type, bool scanning /*= false*/)
843: : smart_device(intf, dev_name, "scsi", req_type),
844: // If opened with O_RDWR, a SATA disk in standby mode
845: // may spin-up after device close().
846: linux_smart_device(O_RDONLY | O_NONBLOCK),
847: m_scanning(scanning)
848: {
849: }
850:
851:
852: bool linux_scsi_device::scsi_pass_through(scsi_cmnd_io * iop)
853: {
854: int status = do_normal_scsi_cmnd_io(get_fd(), iop, scsi_debugmode);
855: if (status < 0)
856: return set_err(-status);
857: return true;
858: }
859:
860: /////////////////////////////////////////////////////////////////////////////
861: /// LSI MegaRAID support
862:
863: class linux_megaraid_device
864: : public /* implements */ scsi_device,
865: public /* extends */ linux_smart_device
866: {
867: public:
868: linux_megaraid_device(smart_interface *intf, const char *name,
869: unsigned int bus, unsigned int tgt);
870:
871: virtual ~linux_megaraid_device() throw();
872:
873: virtual smart_device * autodetect_open();
874:
875: virtual bool open();
876: virtual bool close();
877:
878: virtual bool scsi_pass_through(scsi_cmnd_io *iop);
879:
880: private:
881: unsigned int m_disknum;
882: unsigned int m_busnum;
883: unsigned int m_hba;
884: int m_fd;
885:
886: bool (linux_megaraid_device::*pt_cmd)(int cdblen, void *cdb, int dataLen, void *data,
887: int senseLen, void *sense, int report);
888: bool megasas_cmd(int cdbLen, void *cdb, int dataLen, void *data,
889: int senseLen, void *sense, int report);
890: bool megadev_cmd(int cdbLen, void *cdb, int dataLen, void *data,
891: int senseLen, void *sense, int report);
892: };
893:
894: linux_megaraid_device::linux_megaraid_device(smart_interface *intf,
895: const char *dev_name, unsigned int bus, unsigned int tgt)
896: : smart_device(intf, dev_name, "megaraid", "megaraid"),
897: linux_smart_device(O_RDWR | O_NONBLOCK),
898: m_disknum(tgt), m_busnum(bus), m_hba(0),
899: m_fd(-1), pt_cmd(0)
900: {
901: set_info().info_name = strprintf("%s [megaraid_disk_%02d]", dev_name, m_disknum);
902: }
903:
904: linux_megaraid_device::~linux_megaraid_device() throw()
905: {
906: if (m_fd >= 0)
907: ::close(m_fd);
908: }
909:
910: smart_device * linux_megaraid_device::autodetect_open()
911: {
912: int report = scsi_debugmode;
913:
914: // Open device
915: if (!open())
916: return this;
917:
918: // The code below is based on smartd.cpp:SCSIFilterKnown()
919: if (strcmp(get_req_type(), "megaraid"))
920: return this;
921:
922: // Get INQUIRY
923: unsigned char req_buff[64] = {0, };
924: int req_len = 36;
925: if (scsiStdInquiry(this, req_buff, req_len)) {
926: close();
927: set_err(EIO, "INQUIRY failed");
928: return this;
929: }
930:
931: int avail_len = req_buff[4] + 5;
932: int len = (avail_len < req_len ? avail_len : req_len);
933: if (len < 36)
934: return this;
935:
936: if (report)
937: pout("Got MegaRAID inquiry.. %s\n", req_buff+8);
938:
939: // Use INQUIRY to detect type
940: {
941: // SAT or USB ?
942: ata_device * newdev = smi()->autodetect_sat_device(this, req_buff, len);
943: if (newdev) {
944: // NOTE: 'this' is now owned by '*newdev'
945: newdev->close();
946: newdev->set_err(ENOSYS, "SATA device detected,\n"
947: "MegaRAID SAT layer is reportedly buggy, use '-d sat+megaraid,N' to try anyhow");
948: return newdev;
949: }
950: }
951:
952: // Nothing special found
953: return this;
954: }
955:
956:
957: bool linux_megaraid_device::open()
958: {
959: char line[128];
960: int mjr, n1;
961: FILE *fp;
962: int report = scsi_debugmode;
963:
964: if (!linux_smart_device::open())
965: return false;
966:
967: /* Get device HBA */
968: struct sg_scsi_id sgid;
969: if (ioctl(get_fd(), SG_GET_SCSI_ID, &sgid) == 0) {
970: m_hba = sgid.host_no;
971: }
972: else if (ioctl(get_fd(), SCSI_IOCTL_GET_BUS_NUMBER, &m_hba) != 0) {
973: int err = errno;
974: linux_smart_device::close();
975: return set_err(err, "can't get bus number");
976: }
977:
978: /* Perform mknod of device ioctl node */
979: fp = fopen("/proc/devices", "r");
980: while (fgets(line, sizeof(line), fp) != NULL) {
981: n1=0;
982: if (sscanf(line, "%d megaraid_sas_ioctl%n", &mjr, &n1) == 1 && n1 == 22) {
983: n1=mknod("/dev/megaraid_sas_ioctl_node", S_IFCHR, makedev(mjr, 0));
984: if(report > 0)
985: pout("Creating /dev/megaraid_sas_ioctl_node = %d\n", n1 >= 0 ? 0 : errno);
986: if (n1 >= 0 || errno == EEXIST)
987: break;
988: }
989: else if (sscanf(line, "%d megadev%n", &mjr, &n1) == 1 && n1 == 11) {
990: n1=mknod("/dev/megadev0", S_IFCHR, makedev(mjr, 0));
991: if(report > 0)
992: pout("Creating /dev/megadev0 = %d\n", n1 >= 0 ? 0 : errno);
993: if (n1 >= 0 || errno == EEXIST)
994: break;
995: }
996: }
997: fclose(fp);
998:
999: /* Open Device IOCTL node */
1000: if ((m_fd = ::open("/dev/megaraid_sas_ioctl_node", O_RDWR)) >= 0) {
1001: pt_cmd = &linux_megaraid_device::megasas_cmd;
1002: }
1003: else if ((m_fd = ::open("/dev/megadev0", O_RDWR)) >= 0) {
1004: pt_cmd = &linux_megaraid_device::megadev_cmd;
1005: }
1006: else {
1007: int err = errno;
1008: linux_smart_device::close();
1009: return set_err(err, "cannot open /dev/megaraid_sas_ioctl_node or /dev/megadev0");
1010: }
1011:
1012: return true;
1013: }
1014:
1015: bool linux_megaraid_device::close()
1016: {
1017: if (m_fd >= 0)
1018: ::close(m_fd);
1019: m_fd = -1; m_hba = 0; pt_cmd = 0;
1020: return linux_smart_device::close();
1021: }
1022:
1023: bool linux_megaraid_device::scsi_pass_through(scsi_cmnd_io *iop)
1024: {
1025: int report = scsi_debugmode;
1026:
1027: if (report > 0) {
1028: int k, j;
1029: const unsigned char * ucp = iop->cmnd;
1030: const char * np;
1031: char buff[256];
1032: const int sz = (int)sizeof(buff);
1033:
1034: np = scsi_get_opcode_name(ucp[0]);
1035: j = snprintf(buff, sz, " [%s: ", np ? np : "<unknown opcode>");
1036: for (k = 0; k < (int)iop->cmnd_len; ++k)
1037: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "%02x ", ucp[k]);
1038: if ((report > 1) &&
1039: (DXFER_TO_DEVICE == iop->dxfer_dir) && (iop->dxferp)) {
1040: int trunc = (iop->dxfer_len > 256) ? 1 : 0;
1041:
1042: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n Outgoing "
1043: "data, len=%d%s:\n", (int)iop->dxfer_len,
1044: (trunc ? " [only first 256 bytes shown]" : ""));
1045: dStrHex((const char *)iop->dxferp,
1046: (trunc ? 256 : iop->dxfer_len) , 1);
1047: }
1048: else
1049: j += snprintf(&buff[j], (sz > j ? (sz - j) : 0), "]\n");
1050: pout("%s", buff);
1051: }
1052:
1053: // Controller rejects Test Unit Ready
1054: if (iop->cmnd[0] == 0x00)
1055: return true;
1056:
1057: if (iop->cmnd[0] == SAT_ATA_PASSTHROUGH_12 || iop->cmnd[0] == SAT_ATA_PASSTHROUGH_16) {
1058: // Controller does not return ATA output registers in SAT sense data
1059: if (iop->cmnd[2] & (1 << 5)) // chk_cond
1060: return set_err(ENOSYS, "ATA return descriptor not supported by controller firmware");
1061: }
1062: // SMART WRITE LOG SECTOR causing media errors
1063: if ((iop->cmnd[0] == SAT_ATA_PASSTHROUGH_16 && iop->cmnd[14] == ATA_SMART_CMD
1064: && iop->cmnd[3]==0 && iop->cmnd[4] == ATA_SMART_WRITE_LOG_SECTOR) ||
1065: (iop->cmnd[0] == SAT_ATA_PASSTHROUGH_12 && iop->cmnd[9] == ATA_SMART_CMD &&
1066: iop->cmnd[3] == ATA_SMART_WRITE_LOG_SECTOR))
1067: return set_err(ENOSYS, "SMART WRITE LOG SECTOR command is not supported by controller firmware");
1068:
1069: if (pt_cmd == NULL)
1070: return false;
1071: return (this->*pt_cmd)(iop->cmnd_len, iop->cmnd,
1072: iop->dxfer_len, iop->dxferp,
1073: iop->max_sense_len, iop->sensep, report);
1074: }
1075:
1076: /* Issue passthrough scsi command to PERC5/6 controllers */
1077: bool linux_megaraid_device::megasas_cmd(int cdbLen, void *cdb,
1078: int dataLen, void *data,
1079: int /*senseLen*/, void * /*sense*/, int /*report*/)
1080: {
1081: struct megasas_pthru_frame *pthru;
1082: struct megasas_iocpacket uio;
1083: int rc;
1084:
1085: memset(&uio, 0, sizeof(uio));
1086: pthru = &uio.frame.pthru;
1087: pthru->cmd = MFI_CMD_PD_SCSI_IO;
1088: pthru->cmd_status = 0xFF;
1089: pthru->scsi_status = 0x0;
1090: pthru->target_id = m_disknum;
1091: pthru->lun = 0;
1092: pthru->cdb_len = cdbLen;
1093: pthru->timeout = 0;
1094: pthru->flags = MFI_FRAME_DIR_READ;
1095: if (dataLen > 0) {
1096: pthru->sge_count = 1;
1097: pthru->data_xfer_len = dataLen;
1098: pthru->sgl.sge32[0].phys_addr = (intptr_t)data;
1099: pthru->sgl.sge32[0].length = (uint32_t)dataLen;
1100: }
1101: memcpy(pthru->cdb, cdb, cdbLen);
1102:
1103: uio.host_no = m_hba;
1104: if (dataLen > 0) {
1105: uio.sge_count = 1;
1106: uio.sgl_off = offsetof(struct megasas_pthru_frame, sgl);
1107: uio.sgl[0].iov_base = data;
1108: uio.sgl[0].iov_len = dataLen;
1109: }
1110:
1111: rc = 0;
1112: errno = 0;
1113: rc = ioctl(m_fd, MEGASAS_IOC_FIRMWARE, &uio);
1114: if (pthru->cmd_status || rc != 0) {
1115: if (pthru->cmd_status == 12) {
1116: return set_err(EIO, "megasas_cmd: Device %d does not exist\n", m_disknum);
1117: }
1118: return set_err((errno ? errno : EIO), "megasas_cmd result: %d.%d = %d/%d",
1119: m_hba, m_disknum, errno,
1120: pthru->cmd_status);
1121: }
1122: return true;
1123: }
1124:
1125: /* Issue passthrough scsi commands to PERC2/3/4 controllers */
1126: bool linux_megaraid_device::megadev_cmd(int cdbLen, void *cdb,
1127: int dataLen, void *data,
1128: int /*senseLen*/, void * /*sense*/, int /*report*/)
1129: {
1130: struct uioctl_t uio;
1131: int rc;
1132:
1133: /* Don't issue to the controller */
1134: if (m_disknum == 7)
1135: return false;
1136:
1137: memset(&uio, 0, sizeof(uio));
1138: uio.inlen = dataLen;
1139: uio.outlen = dataLen;
1140:
1141: memset(data, 0, dataLen);
1142: uio.ui.fcs.opcode = 0x80; // M_RD_IOCTL_CMD
1143: uio.ui.fcs.adapno = MKADAP(m_hba);
1144:
1145: uio.data.pointer = (uint8_t *)data;
1146:
1147: uio.mbox.cmd = MEGA_MBOXCMD_PASSTHRU;
1148: uio.mbox.xferaddr = (intptr_t)&uio.pthru;
1149:
1150: uio.pthru.ars = 1;
1151: uio.pthru.timeout = 2;
1152: uio.pthru.channel = 0;
1153: uio.pthru.target = m_disknum;
1154: uio.pthru.cdblen = cdbLen;
1155: uio.pthru.reqsenselen = MAX_REQ_SENSE_LEN;
1156: uio.pthru.dataxferaddr = (intptr_t)data;
1157: uio.pthru.dataxferlen = dataLen;
1158: memcpy(uio.pthru.cdb, cdb, cdbLen);
1159:
1160: rc=ioctl(m_fd, MEGAIOCCMD, &uio);
1161: if (uio.pthru.scsistatus || rc != 0) {
1162: return set_err((errno ? errno : EIO), "megadev_cmd result: %d.%d = %d/%d",
1163: m_hba, m_disknum, errno,
1164: uio.pthru.scsistatus);
1165: }
1166: return true;
1167: }
1168:
1169: /////////////////////////////////////////////////////////////////////////////
1170: /// CCISS RAID support
1171:
1172: #ifdef HAVE_LINUX_CCISS_IOCTL_H
1173:
1174: class linux_cciss_device
1175: : public /*implements*/ scsi_device,
1176: public /*extends*/ linux_smart_device
1177: {
1178: public:
1179: linux_cciss_device(smart_interface * intf, const char * name, unsigned char disknum);
1180:
1181: virtual bool scsi_pass_through(scsi_cmnd_io * iop);
1182:
1183: private:
1184: unsigned char m_disknum; ///< Disk number.
1185: };
1186:
1187: linux_cciss_device::linux_cciss_device(smart_interface * intf,
1188: const char * dev_name, unsigned char disknum)
1189: : smart_device(intf, dev_name, "cciss", "cciss"),
1190: linux_smart_device(O_RDWR | O_NONBLOCK),
1191: m_disknum(disknum)
1192: {
1193: set_info().info_name = strprintf("%s [cciss_disk_%02d]", dev_name, disknum);
1194: }
1195:
1196: bool linux_cciss_device::scsi_pass_through(scsi_cmnd_io * iop)
1197: {
1198: int status = cciss_io_interface(get_fd(), m_disknum, iop, scsi_debugmode);
1199: if (status < 0)
1200: return set_err(-status);
1201: return true;
1202: }
1203:
1204: #endif // HAVE_LINUX_CCISS_IOCTL_H
1205:
1206: /////////////////////////////////////////////////////////////////////////////
1207: /// AMCC/3ware RAID support
1208:
1209: class linux_escalade_device
1210: : public /*implements*/ ata_device,
1211: public /*extends*/ linux_smart_device
1212: {
1213: public:
1214: enum escalade_type_t {
1215: AMCC_3WARE_678K,
1216: AMCC_3WARE_678K_CHAR,
1217: AMCC_3WARE_9000_CHAR,
1218: AMCC_3WARE_9700_CHAR
1219: };
1220:
1221: linux_escalade_device(smart_interface * intf, const char * dev_name,
1222: escalade_type_t escalade_type, int disknum);
1223:
1224: virtual bool open();
1225:
1226: virtual bool ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out);
1227:
1228: private:
1229: escalade_type_t m_escalade_type; ///< Controller type
1230: int m_disknum; ///< Disk number.
1231: };
1232:
1233: linux_escalade_device::linux_escalade_device(smart_interface * intf, const char * dev_name,
1234: escalade_type_t escalade_type, int disknum)
1235: : smart_device(intf, dev_name, "3ware", "3ware"),
1236: linux_smart_device(O_RDONLY | O_NONBLOCK),
1237: m_escalade_type(escalade_type), m_disknum(disknum)
1238: {
1239: set_info().info_name = strprintf("%s [3ware_disk_%02d]", dev_name, disknum);
1240: }
1241:
1242: /* This function will setup and fix device nodes for a 3ware controller. */
1243: #define MAJOR_STRING_LENGTH 3
1244: #define DEVICE_STRING_LENGTH 32
1245: #define NODE_STRING_LENGTH 16
1246: static int setup_3ware_nodes(const char *nodename, const char *driver_name)
1247: {
1248: int tw_major = 0;
1249: int index = 0;
1250: char majorstring[MAJOR_STRING_LENGTH+1];
1251: char device_name[DEVICE_STRING_LENGTH+1];
1252: char nodestring[NODE_STRING_LENGTH];
1253: struct stat stat_buf;
1254: FILE *file;
1255: int retval = 0;
1256: #ifdef WITH_SELINUX
1257: security_context_t orig_context = NULL;
1258: security_context_t node_context = NULL;
1259: int selinux_enabled = is_selinux_enabled();
1260: int selinux_enforced = security_getenforce();
1261: #endif
1262:
1263:
1264: /* First try to open up /proc/devices */
1265: if (!(file = fopen("/proc/devices", "r"))) {
1266: pout("Error opening /proc/devices to check/create 3ware device nodes\n");
1267: syserror("fopen");
1268: return 0; // don't fail here: user might not have /proc !
1269: }
1270:
1271: /* Attempt to get device major number */
1272: while (EOF != fscanf(file, "%3s %32s", majorstring, device_name)) {
1273: majorstring[MAJOR_STRING_LENGTH]='\0';
1274: device_name[DEVICE_STRING_LENGTH]='\0';
1275: if (!strncmp(device_name, nodename, DEVICE_STRING_LENGTH)) {
1276: tw_major = atoi(majorstring);
1277: break;
1278: }
1279: }
1280: fclose(file);
1281:
1282: /* See if we found a major device number */
1283: if (!tw_major) {
1284: pout("No major number for /dev/%s listed in /proc/devices. Is the %s driver loaded?\n", nodename, driver_name);
1285: return 2;
1286: }
1287: #ifdef WITH_SELINUX
1288: /* Prepare a database of contexts for files in /dev
1289: * and save the current context */
1290: if (selinux_enabled) {
1291: if (matchpathcon_init_prefix(NULL, "/dev") < 0)
1292: pout("Error initializing contexts database for /dev");
1293: if (getfscreatecon(&orig_context) < 0) {
1294: pout("Error retrieving original SELinux fscreate context");
1295: if (selinux_enforced)
1296: matchpathcon_fini();
1297: return 6;
1298: }
1299: }
1300: #endif
1301: /* Now check if nodes are correct */
1302: for (index=0; index<16; index++) {
1303: sprintf(nodestring, "/dev/%s%d", nodename, index);
1304: #ifdef WITH_SELINUX
1305: /* Get context of the node and set it as the default */
1306: if (selinux_enabled) {
1307: if (matchpathcon(nodestring, S_IRUSR | S_IWUSR, &node_context) < 0) {
1308: pout("Could not retrieve context for %s", nodestring);
1309: if (selinux_enforced) {
1310: retval = 6;
1311: break;
1312: }
1313: }
1314: if (setfscreatecon(node_context) < 0) {
1315: pout ("Error setting default fscreate context");
1316: if (selinux_enforced) {
1317: retval = 6;
1318: break;
1319: }
1320: }
1321: }
1322: #endif
1323: /* Try to stat the node */
1324: if ((stat(nodestring, &stat_buf))) {
1325: pout("Node %s does not exist and must be created. Check the udev rules.\n", nodestring);
1326: /* Create a new node if it doesn't exist */
1327: if (mknod(nodestring, S_IFCHR|0600, makedev(tw_major, index))) {
1328: pout("problem creating 3ware device nodes %s", nodestring);
1329: syserror("mknod");
1330: retval = 3;
1331: break;
1332: } else {
1333: #ifdef WITH_SELINUX
1334: if (selinux_enabled && node_context) {
1335: freecon(node_context);
1336: node_context = NULL;
1337: }
1338: #endif
1339: continue;
1340: }
1341: }
1342:
1343: /* See if nodes major and minor numbers are correct */
1344: if ((tw_major != (int)(major(stat_buf.st_rdev))) ||
1345: (index != (int)(minor(stat_buf.st_rdev))) ||
1346: (!S_ISCHR(stat_buf.st_mode))) {
1347: pout("Node %s has wrong major/minor number and must be created anew."
1348: " Check the udev rules.\n", nodestring);
1349: /* Delete the old node */
1350: if (unlink(nodestring)) {
1351: pout("problem unlinking stale 3ware device node %s", nodestring);
1352: syserror("unlink");
1353: retval = 4;
1354: break;
1355: }
1356:
1357: /* Make a new node */
1358: if (mknod(nodestring, S_IFCHR|0600, makedev(tw_major, index))) {
1359: pout("problem creating 3ware device nodes %s", nodestring);
1360: syserror("mknod");
1361: retval = 5;
1362: break;
1363: }
1364: }
1365: #ifdef WITH_SELINUX
1366: if (selinux_enabled && node_context) {
1367: freecon(node_context);
1368: node_context = NULL;
1369: }
1370: #endif
1371: }
1372:
1373: #ifdef WITH_SELINUX
1374: if (selinux_enabled) {
1375: if(setfscreatecon(orig_context) < 0) {
1376: pout("Error re-setting original fscreate context");
1377: if (selinux_enforced)
1378: retval = 6;
1379: }
1380: if(orig_context)
1381: freecon(orig_context);
1382: if(node_context)
1383: freecon(node_context);
1384: matchpathcon_fini();
1385: }
1386: #endif
1387: return retval;
1388: }
1389:
1390: bool linux_escalade_device::open()
1391: {
1392: if (m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR ||
1393: m_escalade_type == AMCC_3WARE_678K_CHAR) {
1394: // the device nodes for these controllers are dynamically assigned,
1395: // so we need to check that they exist with the correct major
1396: // numbers and if not, create them
1397: const char * node = (m_escalade_type == AMCC_3WARE_9700_CHAR ? "twl" :
1398: m_escalade_type == AMCC_3WARE_9000_CHAR ? "twa" :
1399: "twe" );
1400: const char * driver = (m_escalade_type == AMCC_3WARE_9700_CHAR ? "3w-sas" :
1401: m_escalade_type == AMCC_3WARE_9000_CHAR ? "3w-9xxx" :
1402: "3w-xxxx" );
1403: if (setup_3ware_nodes(node, driver))
1404: return set_err((errno ? errno : ENXIO), "setup_3ware_nodes(\"%s\", \"%s\") failed", node, driver);
1405: }
1406: // Continue with default open
1407: return linux_smart_device::open();
1408: }
1409:
1410: // TODO: Function no longer useful
1411: //void printwarning(smart_command_set command);
1412:
1413: // PURPOSE
1414: // This is an interface routine meant to isolate the OS dependent
1415: // parts of the code, and to provide a debugging interface. Each
1416: // different port and OS needs to provide it's own interface. This
1417: // is the linux interface to the 3ware 3w-xxxx driver. It allows ATA
1418: // commands to be passed through the SCSI driver.
1419: // DETAILED DESCRIPTION OF ARGUMENTS
1420: // fd: is the file descriptor provided by open()
1421: // disknum is the disk number (0 to 15) in the RAID array
1422: // escalade_type indicates the type of controller type, and if scsi or char interface is used
1423: // command: defines the different operations.
1424: // select: additional input data if needed (which log, which type of
1425: // self-test).
1426: // data: location to write output data, if needed (512 bytes).
1427: // Note: not all commands use all arguments.
1428: // RETURN VALUES
1429: // -1 if the command failed
1430: // 0 if the command succeeded,
1431: // STATUS_CHECK routine:
1432: // -1 if the command failed
1433: // 0 if the command succeeded and disk SMART status is "OK"
1434: // 1 if the command succeeded and disk SMART status is "FAILING"
1435:
1436:
1437: /* 512 is the max payload size: increase if needed */
1438: #define BUFFER_LEN_678K ( sizeof(TW_Ioctl) ) // 1044 unpacked, 1041 packed
1439: #define BUFFER_LEN_678K_CHAR ( sizeof(TW_New_Ioctl)+512-1 ) // 1539 unpacked, 1536 packed
1440: #define BUFFER_LEN_9000 ( sizeof(TW_Ioctl_Buf_Apache)+512-1 ) // 2051 unpacked, 2048 packed
1441: #define TW_IOCTL_BUFFER_SIZE ( MAX(MAX(BUFFER_LEN_678K, BUFFER_LEN_9000), BUFFER_LEN_678K_CHAR) )
1442:
1443: bool linux_escalade_device::ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out)
1444: {
1445: if (!ata_cmd_is_ok(in,
1446: true, // data_out_support
1447: false, // TODO: multi_sector_support
1448: true) // ata_48bit_support
1449: )
1450: return false;
1451:
1452: // Used by both the SCSI and char interfaces
1453: TW_Passthru *passthru=NULL;
1454: char ioctl_buffer[TW_IOCTL_BUFFER_SIZE];
1455:
1456: // only used for SCSI device interface
1457: TW_Ioctl *tw_ioctl=NULL;
1458: TW_Output *tw_output=NULL;
1459:
1460: // only used for 6000/7000/8000 char device interface
1461: TW_New_Ioctl *tw_ioctl_char=NULL;
1462:
1463: // only used for 9000 character device interface
1464: TW_Ioctl_Buf_Apache *tw_ioctl_apache=NULL;
1465:
1466: memset(ioctl_buffer, 0, TW_IOCTL_BUFFER_SIZE);
1467:
1468: // TODO: Handle controller differences by different classes
1469: if (m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR) {
1470: tw_ioctl_apache = (TW_Ioctl_Buf_Apache *)ioctl_buffer;
1471: tw_ioctl_apache->driver_command.control_code = TW_IOCTL_FIRMWARE_PASS_THROUGH;
1472: tw_ioctl_apache->driver_command.buffer_length = 512; /* payload size */
1473: passthru = (TW_Passthru *)&(tw_ioctl_apache->firmware_command.command.oldcommand);
1474: }
1475: else if (m_escalade_type==AMCC_3WARE_678K_CHAR) {
1476: tw_ioctl_char = (TW_New_Ioctl *)ioctl_buffer;
1477: tw_ioctl_char->data_buffer_length = 512;
1478: passthru = (TW_Passthru *)&(tw_ioctl_char->firmware_command);
1479: }
1480: else if (m_escalade_type==AMCC_3WARE_678K) {
1481: tw_ioctl = (TW_Ioctl *)ioctl_buffer;
1482: tw_ioctl->cdb[0] = TW_IOCTL;
1483: tw_ioctl->opcode = TW_ATA_PASSTHRU;
1484: tw_ioctl->input_length = 512; // correct even for non-data commands
1485: tw_ioctl->output_length = 512; // correct even for non-data commands
1486: tw_output = (TW_Output *)tw_ioctl;
1487: passthru = (TW_Passthru *)&(tw_ioctl->input_data);
1488: }
1489: else {
1490: return set_err(ENOSYS,
1491: "Unrecognized escalade_type %d in linux_3ware_command_interface(disk %d)\n"
1492: "Please contact " PACKAGE_BUGREPORT "\n", (int)m_escalade_type, m_disknum);
1493: }
1494:
1495: // Same for (almost) all commands - but some reset below
1496: passthru->byte0.opcode = TW_OP_ATA_PASSTHRU;
1497: passthru->request_id = 0xFF;
1498: passthru->unit = m_disknum;
1499: passthru->status = 0;
1500: passthru->flags = 0x1;
1501:
1502: // Set registers
1503: {
1504: const ata_in_regs_48bit & r = in.in_regs;
1505: passthru->features = r.features_16;
1506: passthru->sector_count = r.sector_count_16;
1507: passthru->sector_num = r.lba_low_16;
1508: passthru->cylinder_lo = r.lba_mid_16;
1509: passthru->cylinder_hi = r.lba_high_16;
1510: passthru->drive_head = r.device;
1511: passthru->command = r.command;
1512: }
1513:
1514: // Is this a command that reads or returns 512 bytes?
1515: // passthru->param values are:
1516: // 0x0 - non data command without TFR write check,
1517: // 0x8 - non data command with TFR write check,
1518: // 0xD - data command that returns data to host from device
1519: // 0xF - data command that writes data from host to device
1520: // passthru->size values are 0x5 for non-data and 0x07 for data
1521: bool readdata = false;
1522: if (in.direction == ata_cmd_in::data_in) {
1523: readdata=true;
1524: passthru->byte0.sgloff = 0x5;
1525: passthru->size = 0x7; // TODO: Other value for multi-sector ?
1526: passthru->param = 0xD;
1527: // For 64-bit to work correctly, up the size of the command packet
1528: // in dwords by 1 to account for the 64-bit single sgl 'address'
1529: // field. Note that this doesn't agree with the typedefs but it's
1530: // right (agree with kernel driver behavior/typedefs).
1531: if ((m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR)
1532: && sizeof(long) == 8)
1533: passthru->size++;
1534: }
1535: else if (in.direction == ata_cmd_in::no_data) {
1536: // Non data command -- but doesn't use large sector
1537: // count register values.
1538: passthru->byte0.sgloff = 0x0;
1539: passthru->size = 0x5;
1540: passthru->param = 0x8;
1541: passthru->sector_count = 0x0;
1542: }
1543: else if (in.direction == ata_cmd_in::data_out) {
1544: if (m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR)
1545: memcpy(tw_ioctl_apache->data_buffer, in.buffer, in.size);
1546: else if (m_escalade_type == AMCC_3WARE_678K_CHAR)
1547: memcpy(tw_ioctl_char->data_buffer, in.buffer, in.size);
1548: else {
1549: // COMMAND NOT SUPPORTED VIA SCSI IOCTL INTERFACE
1550: // memcpy(tw_output->output_data, data, 512);
1551: // printwarning(command); // TODO: Parameter no longer valid
1552: return set_err(ENOTSUP, "DATA OUT not supported for this 3ware controller type");
1553: }
1554: passthru->byte0.sgloff = 0x5;
1555: passthru->size = 0x7; // TODO: Other value for multi-sector ?
1556: passthru->param = 0xF; // PIO data write
1557: if ((m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR)
1558: && sizeof(long) == 8)
1559: passthru->size++;
1560: }
1561: else
1562: return set_err(EINVAL);
1563:
1564: // Now send the command down through an ioctl()
1565: int ioctlreturn;
1566: if (m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR)
1567: ioctlreturn=ioctl(get_fd(), TW_IOCTL_FIRMWARE_PASS_THROUGH, tw_ioctl_apache);
1568: else if (m_escalade_type==AMCC_3WARE_678K_CHAR)
1569: ioctlreturn=ioctl(get_fd(), TW_CMD_PACKET_WITH_DATA, tw_ioctl_char);
1570: else
1571: ioctlreturn=ioctl(get_fd(), SCSI_IOCTL_SEND_COMMAND, tw_ioctl);
1572:
1573: // Deal with the different error cases
1574: if (ioctlreturn) {
1575: if (AMCC_3WARE_678K==m_escalade_type
1576: && in.in_regs.command==ATA_SMART_CMD
1577: && ( in.in_regs.features == ATA_SMART_AUTO_OFFLINE
1578: || in.in_regs.features == ATA_SMART_AUTOSAVE )
1579: && in.in_regs.lba_low) {
1580: // error here is probably a kernel driver whose version is too old
1581: // printwarning(command); // TODO: Parameter no longer valid
1582: return set_err(ENOTSUP, "Probably kernel driver too old");
1583: }
1584: return set_err(EIO);
1585: }
1586:
1587: // The passthru structure is valid after return from an ioctl if:
1588: // - we are using the character interface OR
1589: // - we are using the SCSI interface and this is a NON-READ-DATA command
1590: // For SCSI interface, note that we set passthru to a different
1591: // value after ioctl().
1592: if (AMCC_3WARE_678K==m_escalade_type) {
1593: if (readdata)
1594: passthru=NULL;
1595: else
1596: passthru=(TW_Passthru *)&(tw_output->output_data);
1597: }
1598:
1599: // See if the ATA command failed. Now that we have returned from
1600: // the ioctl() call, if passthru is valid, then:
1601: // - passthru->status contains the 3ware controller STATUS
1602: // - passthru->command contains the ATA STATUS register
1603: // - passthru->features contains the ATA ERROR register
1604: //
1605: // Check bits 0 (error bit) and 5 (device fault) of the ATA STATUS
1606: // If bit 0 (error bit) is set, then ATA ERROR register is valid.
1607: // While we *might* decode the ATA ERROR register, at the moment it
1608: // doesn't make much sense: we don't care in detail why the error
1609: // happened.
1610:
1611: if (passthru && (passthru->status || (passthru->command & 0x21))) {
1612: return set_err(EIO);
1613: }
1614:
1615: // If this is a read data command, copy data to output buffer
1616: if (readdata) {
1617: if (m_escalade_type == AMCC_3WARE_9700_CHAR || m_escalade_type == AMCC_3WARE_9000_CHAR)
1618: memcpy(in.buffer, tw_ioctl_apache->data_buffer, in.size);
1619: else if (m_escalade_type==AMCC_3WARE_678K_CHAR)
1620: memcpy(in.buffer, tw_ioctl_char->data_buffer, in.size);
1621: else
1622: memcpy(in.buffer, tw_output->output_data, in.size);
1623: }
1624:
1625: // Return register values
1626: if (passthru) {
1627: ata_out_regs_48bit & r = out.out_regs;
1628: r.error = passthru->features;
1629: r.sector_count_16 = passthru->sector_count;
1630: r.lba_low_16 = passthru->sector_num;
1631: r.lba_mid_16 = passthru->cylinder_lo;
1632: r.lba_high_16 = passthru->cylinder_hi;
1633: r.device = passthru->drive_head;
1634: r.status = passthru->command;
1635: }
1636:
1637: // look for nonexistent devices/ports
1638: if ( in.in_regs.command == ATA_IDENTIFY_DEVICE
1639: && !nonempty(in.buffer, in.size)) {
1640: return set_err(ENODEV, "No drive on port %d", m_disknum);
1641: }
1642:
1643: return true;
1644: }
1645:
1646:
1647: /////////////////////////////////////////////////////////////////////////////
1648: /// Areca RAID support
1649:
1650: class linux_areca_device
1651: : public /*implements*/ ata_device,
1652: public /*extends*/ linux_smart_device
1653: {
1654: public:
1655: linux_areca_device(smart_interface * intf, const char * dev_name, int disknum);
1656:
1657: protected:
1658: virtual bool ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out);
1659:
1660: private:
1661: int m_disknum; ///< Disk number.
1662: };
1663:
1664:
1665: // PURPOSE
1666: // This is an interface routine meant to isolate the OS dependent
1667: // parts of the code, and to provide a debugging interface. Each
1668: // different port and OS needs to provide it's own interface. This
1669: // is the linux interface to the Areca "arcmsr" driver. It allows ATA
1670: // commands to be passed through the SCSI driver.
1671: // DETAILED DESCRIPTION OF ARGUMENTS
1672: // fd: is the file descriptor provided by open()
1673: // disknum is the disk number (0 to 15) in the RAID array
1674: // command: defines the different operations.
1675: // select: additional input data if needed (which log, which type of
1676: // self-test).
1677: // data: location to write output data, if needed (512 bytes).
1678: // Note: not all commands use all arguments.
1679: // RETURN VALUES
1680: // -1 if the command failed
1681: // 0 if the command succeeded,
1682: // STATUS_CHECK routine:
1683: // -1 if the command failed
1684: // 0 if the command succeeded and disk SMART status is "OK"
1685: // 1 if the command succeeded and disk SMART status is "FAILING"
1686:
1687:
1688: /*DeviceType*/
1689: #define ARECA_SATA_RAID 0x90000000
1690: /*FunctionCode*/
1691: #define FUNCTION_READ_RQBUFFER 0x0801
1692: #define FUNCTION_WRITE_WQBUFFER 0x0802
1693: #define FUNCTION_CLEAR_RQBUFFER 0x0803
1694: #define FUNCTION_CLEAR_WQBUFFER 0x0804
1695:
1696: /* ARECA IO CONTROL CODE*/
1697: #define ARCMSR_IOCTL_READ_RQBUFFER (ARECA_SATA_RAID | FUNCTION_READ_RQBUFFER)
1698: #define ARCMSR_IOCTL_WRITE_WQBUFFER (ARECA_SATA_RAID | FUNCTION_WRITE_WQBUFFER)
1699: #define ARCMSR_IOCTL_CLEAR_RQBUFFER (ARECA_SATA_RAID | FUNCTION_CLEAR_RQBUFFER)
1700: #define ARCMSR_IOCTL_CLEAR_WQBUFFER (ARECA_SATA_RAID | FUNCTION_CLEAR_WQBUFFER)
1701: #define ARECA_SIG_STR "ARCMSR"
1702:
1703: // The SRB_IO_CONTROL & SRB_BUFFER structures are used to communicate(to/from) to areca driver
1704: typedef struct _SRB_IO_CONTROL
1705: {
1706: unsigned int HeaderLength;
1707: unsigned char Signature[8];
1708: unsigned int Timeout;
1709: unsigned int ControlCode;
1710: unsigned int ReturnCode;
1711: unsigned int Length;
1712: } sSRB_IO_CONTROL;
1713:
1714: typedef struct _SRB_BUFFER
1715: {
1716: sSRB_IO_CONTROL srbioctl;
1717: unsigned char ioctldatabuffer[1032]; // the buffer to put the command data to/from firmware
1718: } sSRB_BUFFER;
1719:
1720: // Looks in /proc/scsi to suggest correct areca devices
1721: // If hint not NULL, return device path guess
1722: static int find_areca_in_proc(char *hint)
1723: {
1724: const char* proc_format_string="host\tchan\tid\tlun\ttype\topens\tqdepth\tbusy\tonline\n";
1725:
1726: // check data formwat
1727: FILE *fp=fopen("/proc/scsi/sg/device_hdr", "r");
1728: if (!fp) {
1729: pout("Unable to open /proc/scsi/sg/device_hdr for reading\n");
1730: return 1;
1731: }
1732:
1733: // get line, compare to format
1734: char linebuf[256];
1735: linebuf[255]='\0';
1736: char *out = fgets(linebuf, 256, fp);
1737: fclose(fp);
1738: if (!out) {
1739: pout("Unable to read contents of /proc/scsi/sg/device_hdr\n");
1740: return 2;
1741: }
1742:
1743: if (strcmp(linebuf, proc_format_string)) {
1744: // wrong format!
1745: // Fix this by comparing only tokens not white space!!
1746: pout("Unexpected format %s in /proc/scsi/sg/device_hdr\n", proc_format_string);
1747: return 3;
1748: }
1749:
1750: // Format is understood, now search for correct device
1751: fp=fopen("/proc/scsi/sg/devices", "r");
1752: if (!fp) return 1;
1753: int host, chan, id, lun, type, opens, qdepth, busy, online;
1754: int dev=-1;
1755: int found=0;
1756: // search all lines of /proc/scsi/sg/devices
1757: while (9 == fscanf(fp, "%d %d %d %d %d %d %d %d %d", &host, &chan, &id, &lun, &type, &opens, &qdepth, &busy, &online)) {
1758: dev++;
1759: if (id == 16 && type == 3) {
1760: // devices with id=16 and type=3 might be Areca controllers
1761: if (!found && hint) {
1762: sprintf(hint, "/dev/sg%d", dev);
1763: }
1764: pout("Device /dev/sg%d appears to be an Areca controller.\n", dev);
1765: found++;
1766: }
1767: }
1768: fclose(fp);
1769: return 0;
1770: }
1771:
1772:
1773: #if 0 // For debugging areca code
1774:
1775: static void dumpdata(unsigned char *block, int len)
1776: {
1777: int ln = (len / 16) + 1; // total line#
1778: unsigned char c;
1779: int pos = 0;
1780:
1781: printf(" Address = %p, Length = (0x%x)%d\n", block, len, len);
1782: printf(" 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII \n");
1783: printf("=====================================================================\n");
1784:
1785: for ( int l = 0; l < ln && len; l++ )
1786: {
1787: // printf the line# and the HEX data
1788: // if a line data length < 16 then append the space to the tail of line to reach 16 chars
1789: printf("%02X | ", l);
1790: for ( pos = 0; pos < 16 && len; pos++, len-- )
1791: {
1792: c = block[l*16+pos];
1793: printf("%02X ", c);
1794: }
1795:
1796: if ( pos < 16 )
1797: {
1798: for ( int loop = pos; loop < 16; loop++ )
1799: {
1800: printf(" ");
1801: }
1802: }
1803:
1804: // print ASCII char
1805: for ( int loop = 0; loop < pos; loop++ )
1806: {
1807: c = block[l*16+loop];
1808: if ( c >= 0x20 && c <= 0x7F )
1809: {
1810: printf("%c", c);
1811: }
1812: else
1813: {
1814: printf(".");
1815: }
1816: }
1817: printf("\n");
1818: }
1819: printf("=====================================================================\n");
1820: }
1821:
1822: #endif
1823:
1824: static int arcmsr_command_handler(int fd, unsigned long arcmsr_cmd, unsigned char *data, int data_len, void *ext_data /* reserved for further use */)
1825: {
1826: ARGUSED(ext_data);
1827:
1828: int ioctlreturn = 0;
1829: sSRB_BUFFER sBuf;
1830: struct scsi_cmnd_io io_hdr;
1831: int dir = DXFER_TO_DEVICE;
1832:
1833: UINT8 cdb[10];
1834: UINT8 sense[32];
1835:
1836: unsigned char *areca_return_packet;
1837: int total = 0;
1838: int expected = -1;
1839: unsigned char return_buff[2048];
1840: unsigned char *ptr = &return_buff[0];
1841: memset(return_buff, 0, sizeof(return_buff));
1842:
1843: memset((unsigned char *)&sBuf, 0, sizeof(sBuf));
1844: memset(&io_hdr, 0, sizeof(io_hdr));
1845: memset(cdb, 0, sizeof(cdb));
1846: memset(sense, 0, sizeof(sense));
1847:
1848:
1849: sBuf.srbioctl.HeaderLength = sizeof(sSRB_IO_CONTROL);
1850: memcpy(sBuf.srbioctl.Signature, ARECA_SIG_STR, strlen(ARECA_SIG_STR));
1851: sBuf.srbioctl.Timeout = 10000;
1852: sBuf.srbioctl.ControlCode = ARCMSR_IOCTL_READ_RQBUFFER;
1853:
1854: switch ( arcmsr_cmd )
1855: {
1856: // command for writing data to driver
1857: case ARCMSR_IOCTL_WRITE_WQBUFFER:
1858: if ( data && data_len )
1859: {
1860: sBuf.srbioctl.Length = data_len;
1861: memcpy((unsigned char *)sBuf.ioctldatabuffer, (unsigned char *)data, data_len);
1862: }
1863: // commands for clearing related buffer of driver
1864: case ARCMSR_IOCTL_CLEAR_RQBUFFER:
1865: case ARCMSR_IOCTL_CLEAR_WQBUFFER:
1866: cdb[0] = 0x3B; //SCSI_WRITE_BUF command;
1867: break;
1868: // command for reading data from driver
1869: case ARCMSR_IOCTL_READ_RQBUFFER:
1870: cdb[0] = 0x3C; //SCSI_READ_BUF command;
1871: dir = DXFER_FROM_DEVICE;
1872: break;
1873: default:
1874: // unknown arcmsr commands
1875: return -1;
1876: }
1877:
1878: cdb[1] = 0x01;
1879: cdb[2] = 0xf0;
1880: //
1881: // cdb[5][6][7][8] areca defined command code( to/from driver )
1882: //
1883: cdb[5] = (char)( arcmsr_cmd >> 24);
1884: cdb[6] = (char)( arcmsr_cmd >> 16);
1885: cdb[7] = (char)( arcmsr_cmd >> 8);
1886: cdb[8] = (char)( arcmsr_cmd & 0x0F );
1887:
1888: io_hdr.dxfer_dir = dir;
1889: io_hdr.dxfer_len = sizeof(sBuf);
1890: io_hdr.dxferp = (unsigned char *)&sBuf;
1891: io_hdr.cmnd = cdb;
1892: io_hdr.cmnd_len = sizeof(cdb);
1893: io_hdr.sensep = sense;
1894: io_hdr.max_sense_len = sizeof(sense);
1895: io_hdr.timeout = SCSI_TIMEOUT_DEFAULT;
1896:
1897: while ( 1 )
1898: {
1899: ioctlreturn = do_normal_scsi_cmnd_io(fd, &io_hdr, 0);
1900: if ( ioctlreturn || io_hdr.scsi_status )
1901: {
1902: // errors found
1903: break;
1904: }
1905:
1906: if ( arcmsr_cmd != ARCMSR_IOCTL_READ_RQBUFFER )
1907: {
1908: // if succeeded, just returns the length of outgoing data
1909: return data_len;
1910: }
1911:
1912: if ( sBuf.srbioctl.Length )
1913: {
1914: //dumpdata(&sBuf.ioctldatabuffer[0], sBuf.srbioctl.Length);
1915: memcpy(ptr, &sBuf.ioctldatabuffer[0], sBuf.srbioctl.Length);
1916: ptr += sBuf.srbioctl.Length;
1917: total += sBuf.srbioctl.Length;
1918: // the returned bytes enough to compute payload length ?
1919: if ( expected < 0 && total >= 5 )
1920: {
1921: areca_return_packet = (unsigned char *)&return_buff[0];
1922: if ( areca_return_packet[0] == 0x5E &&
1923: areca_return_packet[1] == 0x01 &&
1924: areca_return_packet[2] == 0x61 )
1925: {
1926: // valid header, let's compute the returned payload length,
1927: // we expected the total length is
1928: // payload + 3 bytes header + 2 bytes length + 1 byte checksum
1929: expected = areca_return_packet[4] * 256 + areca_return_packet[3] + 6;
1930: }
1931: }
1932:
1933: if ( total >= 7 && total >= expected )
1934: {
1935: //printf("total bytes received = %d, expected length = %d\n", total, expected);
1936:
1937: // ------ Okay! we received enough --------
1938: break;
1939: }
1940: }
1941: }
1942:
1943: // Deal with the different error cases
1944: if ( ioctlreturn )
1945: {
1946: pout("do_scsi_cmnd_io with write buffer failed code = %x\n", ioctlreturn);
1947: return -2;
1948: }
1949:
1950:
1951: if ( io_hdr.scsi_status )
1952: {
1953: pout("io_hdr.scsi_status with write buffer failed code = %x\n", io_hdr.scsi_status);
1954: return -3;
1955: }
1956:
1957:
1958: if ( data )
1959: {
1960: memcpy(data, return_buff, total);
1961: }
1962:
1963: return total;
1964: }
1965:
1966:
1967: linux_areca_device::linux_areca_device(smart_interface * intf, const char * dev_name, int disknum)
1968: : smart_device(intf, dev_name, "areca", "areca"),
1969: linux_smart_device(O_RDWR | O_EXCL | O_NONBLOCK),
1970: m_disknum(disknum)
1971: {
1972: set_info().info_name = strprintf("%s [areca_%02d]", dev_name, disknum);
1973: }
1974:
1975: // Areca RAID Controller
1976: // int linux_areca_device::ata_command_interface(smart_command_set command, int select, char * data)
1977: bool linux_areca_device::ata_pass_through(const ata_cmd_in & in, ata_cmd_out & out)
1978: {
1979: if (!ata_cmd_is_ok(in,
1980: true, // data_out_support
1981: false, // TODO: multi_sector_support
1982: true) // ata_48bit_support
1983: )
1984: return false;
1985:
1986: // ATA input registers
1987: typedef struct _ATA_INPUT_REGISTERS
1988: {
1989: unsigned char features;
1990: unsigned char sector_count;
1991: unsigned char sector_number;
1992: unsigned char cylinder_low;
1993: unsigned char cylinder_high;
1994: unsigned char device_head;
1995: unsigned char command;
1996: unsigned char reserved[8];
1997: unsigned char data[512]; // [in/out] buffer for outgoing/incoming data
1998: } sATA_INPUT_REGISTERS;
1999:
2000: // ATA output registers
2001: // Note: The output registers is re-sorted for areca internal use only
2002: typedef struct _ATA_OUTPUT_REGISTERS
2003: {
2004: unsigned char error;
2005: unsigned char status;
2006: unsigned char sector_count;
2007: unsigned char sector_number;
2008: unsigned char cylinder_low;
2009: unsigned char cylinder_high;
2010: }sATA_OUTPUT_REGISTERS;
2011:
2012: // Areca packet format for outgoing:
2013: // B[0~2] : 3 bytes header, fixed value 0x5E, 0x01, 0x61
2014: // B[3~4] : 2 bytes command length + variant data length, little endian
2015: // B[5] : 1 bytes areca defined command code, ATA passthrough command code is 0x1c
2016: // B[6~last-1] : variant bytes payload data
2017: // B[last] : 1 byte checksum, simply sum(B[3] ~ B[last -1])
2018: //
2019: //
2020: // header 3 bytes length 2 bytes cmd 1 byte payload data x bytes cs 1 byte
2021: // +--------------------------------------------------------------------------------+
2022: // + 0x5E 0x01 0x61 | 0x00 0x00 | 0x1c | .................... | 0x00 |
2023: // +--------------------------------------------------------------------------------+
2024: //
2025:
2026: //Areca packet format for incoming:
2027: // B[0~2] : 3 bytes header, fixed value 0x5E, 0x01, 0x61
2028: // B[3~4] : 2 bytes payload length, little endian
2029: // B[5~last-1] : variant bytes returned payload data
2030: // B[last] : 1 byte checksum, simply sum(B[3] ~ B[last -1])
2031: //
2032: //
2033: // header 3 bytes length 2 bytes payload data x bytes cs 1 byte
2034: // +-------------------------------------------------------------------+
2035: // + 0x5E 0x01 0x61 | 0x00 0x00 | .................... | 0x00 |
2036: // +-------------------------------------------------------------------+
2037: unsigned char areca_packet[640];
2038: int areca_packet_len = sizeof(areca_packet);
2039: unsigned char cs = 0;
2040:
2041: sATA_INPUT_REGISTERS *ata_cmd;
2042:
2043: // For debugging
2044: #if 0
2045: memset(sInq, 0, sizeof(sInq));
2046: scsiStdInquiry(fd, (unsigned char *)sInq, (int)sizeof(sInq));
2047: dumpdata((unsigned char *)sInq, sizeof(sInq));
2048: #endif
2049: memset(areca_packet, 0, areca_packet_len);
2050:
2051: // ----- BEGIN TO SETUP HEADERS -------
2052: areca_packet[0] = 0x5E;
2053: areca_packet[1] = 0x01;
2054: areca_packet[2] = 0x61;
2055: areca_packet[3] = (unsigned char)((areca_packet_len - 6) & 0xff);
2056: areca_packet[4] = (unsigned char)(((areca_packet_len - 6) >> 8) & 0xff);
2057: areca_packet[5] = 0x1c; // areca defined code for ATA passthrough command
2058:
2059: // ----- BEGIN TO SETUP PAYLOAD DATA -----
2060: memcpy(&areca_packet[7], "SmrT", 4); // areca defined password
2061: ata_cmd = (sATA_INPUT_REGISTERS *)&areca_packet[12];
2062:
2063: // Set registers
2064: {
2065: const ata_in_regs_48bit & r = in.in_regs;
2066: ata_cmd->features = r.features_16;
2067: ata_cmd->sector_count = r.sector_count_16;
2068: ata_cmd->sector_number = r.lba_low_16;
2069: ata_cmd->cylinder_low = r.lba_mid_16;
2070: ata_cmd->cylinder_high = r.lba_high_16;
2071: ata_cmd->device_head = r.device;
2072: ata_cmd->command = r.command;
2073: }
2074: bool readdata = false;
2075: if (in.direction == ata_cmd_in::data_in) {
2076: readdata = true;
2077: // the command will read data
2078: areca_packet[6] = 0x13;
2079: }
2080: else if ( in.direction == ata_cmd_in::no_data )
2081: {
2082: // the commands will return no data
2083: areca_packet[6] = 0x15;
2084: }
2085: else if (in.direction == ata_cmd_in::data_out)
2086: {
2087: // the commands will write data
2088: memcpy(ata_cmd->data, in.buffer, in.size);
2089: areca_packet[6] = 0x14;
2090: }
2091: else {
2092: // COMMAND NOT SUPPORTED VIA ARECA IOCTL INTERFACE
2093: return set_err(ENOTSUP, "DATA OUT not supported for this Areca controller type");
2094: }
2095:
2096: areca_packet[11] = m_disknum - 1; // drive number
2097:
2098: // ----- BEGIN TO SETUP CHECKSUM -----
2099: for ( int loop = 3; loop < areca_packet_len - 1; loop++ )
2100: {
2101: cs += areca_packet[loop];
2102: }
2103: areca_packet[areca_packet_len-1] = cs;
2104:
2105: // ----- BEGIN TO SEND TO ARECA DRIVER ------
2106: int expected = 0;
2107: unsigned char return_buff[2048];
2108: memset(return_buff, 0, sizeof(return_buff));
2109:
2110: expected = arcmsr_command_handler(get_fd(), ARCMSR_IOCTL_CLEAR_RQBUFFER, NULL, 0, NULL);
2111: if (expected==-3) {
2112: find_areca_in_proc(NULL);
2113: return set_err(EIO);
2114: }
2115:
2116: expected = arcmsr_command_handler(get_fd(), ARCMSR_IOCTL_CLEAR_WQBUFFER, NULL, 0, NULL);
2117: expected = arcmsr_command_handler(get_fd(), ARCMSR_IOCTL_WRITE_WQBUFFER, areca_packet, areca_packet_len, NULL);
2118: if ( expected > 0 )
2119: {
2120: expected = arcmsr_command_handler(get_fd(), ARCMSR_IOCTL_READ_RQBUFFER, return_buff, sizeof(return_buff), NULL);
2121: }
2122: if ( expected < 0 )
2123: {
2124: return -1;
2125: }
2126:
2127: // ----- VERIFY THE CHECKSUM -----
2128: cs = 0;
2129: for ( int loop = 3; loop < expected - 1; loop++ )
2130: {
2131: cs += return_buff[loop];
2132: }
2133:
2134: if ( return_buff[expected - 1] != cs )
2135: {
2136: return set_err(EIO);
2137: }
2138:
2139: sATA_OUTPUT_REGISTERS *ata_out = (sATA_OUTPUT_REGISTERS *)&return_buff[5] ;
2140: if ( ata_out->status )
2141: {
2142: if ( in.in_regs.command == ATA_IDENTIFY_DEVICE
2143: && !nonempty((unsigned char *)in.buffer, in.size))
2144: {
2145: return set_err(ENODEV, "No drive on port %d", m_disknum);
2146: }
2147: }
2148:
2149: // returns with data
2150: if (readdata)
2151: {
2152: memcpy(in.buffer, &return_buff[7], in.size);
2153: }
2154:
2155: // Return register values
2156: {
2157: ata_out_regs_48bit & r = out.out_regs;
2158: r.error = ata_out->error;
2159: r.sector_count_16 = ata_out->sector_count;
2160: r.lba_low_16 = ata_out->sector_number;
2161: r.lba_mid_16 = ata_out->cylinder_low;
2162: r.lba_high_16 = ata_out->cylinder_high;
2163: r.status = ata_out->status;
2164: }
2165: return true;
2166: }
2167:
2168:
2169: /////////////////////////////////////////////////////////////////////////////
2170: /// Marvell support
2171:
2172: class linux_marvell_device
2173: : public /*implements*/ ata_device_with_command_set,
2174: public /*extends*/ linux_smart_device
2175: {
2176: public:
2177: linux_marvell_device(smart_interface * intf, const char * dev_name, const char * req_type);
2178:
2179: protected:
2180: virtual int ata_command_interface(smart_command_set command, int select, char * data);
2181: };
2182:
2183: linux_marvell_device::linux_marvell_device(smart_interface * intf,
2184: const char * dev_name, const char * req_type)
2185: : smart_device(intf, dev_name, "marvell", req_type),
2186: linux_smart_device(O_RDONLY | O_NONBLOCK)
2187: {
2188: }
2189:
2190: int linux_marvell_device::ata_command_interface(smart_command_set command, int select, char * data)
2191: {
2192: typedef struct {
2193: int inlen;
2194: int outlen;
2195: char cmd[540];
2196: } mvsata_scsi_cmd;
2197:
2198: int copydata = 0;
2199: mvsata_scsi_cmd smart_command;
2200: unsigned char *buff = (unsigned char *)&smart_command.cmd[6];
2201: // See struct hd_drive_cmd_hdr in hdreg.h
2202: // buff[0]: ATA COMMAND CODE REGISTER
2203: // buff[1]: ATA SECTOR NUMBER REGISTER
2204: // buff[2]: ATA FEATURES REGISTER
2205: // buff[3]: ATA SECTOR COUNT REGISTER
2206:
2207: // clear out buff. Large enough for HDIO_DRIVE_CMD (4+512 bytes)
2208: memset(&smart_command, 0, sizeof(smart_command));
2209: smart_command.inlen = 540;
2210: smart_command.outlen = 540;
2211: smart_command.cmd[0] = 0xC; //Vendor-specific code
2212: smart_command.cmd[4] = 6; //command length
2213:
2214: buff[0] = ATA_SMART_CMD;
2215: switch (command){
2216: case CHECK_POWER_MODE:
2217: buff[0]=ATA_CHECK_POWER_MODE;
2218: break;
2219: case READ_VALUES:
2220: buff[2]=ATA_SMART_READ_VALUES;
2221: copydata=buff[3]=1;
2222: break;
2223: case READ_THRESHOLDS:
2224: buff[2]=ATA_SMART_READ_THRESHOLDS;
2225: copydata=buff[1]=buff[3]=1;
2226: break;
2227: case READ_LOG:
2228: buff[2]=ATA_SMART_READ_LOG_SECTOR;
2229: buff[1]=select;
2230: copydata=buff[3]=1;
2231: break;
2232: case IDENTIFY:
2233: buff[0]=ATA_IDENTIFY_DEVICE;
2234: copydata=buff[3]=1;
2235: break;
2236: case PIDENTIFY:
2237: buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
2238: copydata=buff[3]=1;
2239: break;
2240: case ENABLE:
2241: buff[2]=ATA_SMART_ENABLE;
2242: buff[1]=1;
2243: break;
2244: case DISABLE:
2245: buff[2]=ATA_SMART_DISABLE;
2246: buff[1]=1;
2247: break;
2248: case STATUS:
2249: case STATUS_CHECK:
2250: // this command only says if SMART is working. It could be
2251: // replaced with STATUS_CHECK below.
2252: buff[2] = ATA_SMART_STATUS;
2253: break;
2254: case AUTO_OFFLINE:
2255: buff[2]=ATA_SMART_AUTO_OFFLINE;
2256: buff[3]=select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
2257: break;
2258: case AUTOSAVE:
2259: buff[2]=ATA_SMART_AUTOSAVE;
2260: buff[3]=select; // YET NOTE - THIS IS A NON-DATA COMMAND!!
2261: break;
2262: case IMMEDIATE_OFFLINE:
2263: buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
2264: buff[1]=select;
2265: break;
2266: default:
2267: pout("Unrecognized command %d in mvsata_os_specific_handler()\n", command);
2268: EXIT(1);
2269: break;
2270: }
2271: // There are two different types of ioctls(). The HDIO_DRIVE_TASK
2272: // one is this:
2273: // We are now doing the HDIO_DRIVE_CMD type ioctl.
2274: if (ioctl(get_fd(), SCSI_IOCTL_SEND_COMMAND, (void *)&smart_command))
2275: return -1;
2276:
2277: if (command==CHECK_POWER_MODE) {
2278: // LEON -- CHECK THIS PLEASE. THIS SHOULD BE THE SECTOR COUNT
2279: // REGISTER, AND IT MIGHT BE buff[2] NOT buff[3]. Bruce
2280: data[0]=buff[3];
2281: return 0;
2282: }
2283:
2284: // Always succeed on a SMART status, as a disk that failed returned
2285: // buff[4]=0xF4, buff[5]=0x2C, i.e. "Bad SMART status" (see below).
2286: if (command == STATUS)
2287: return 0;
2288: //Data returned is starting from 0 offset
2289: if (command == STATUS_CHECK)
2290: {
2291: // Cyl low and Cyl high unchanged means "Good SMART status"
2292: if (buff[4] == 0x4F && buff[5] == 0xC2)
2293: return 0;
2294: // These values mean "Bad SMART status"
2295: if (buff[4] == 0xF4 && buff[5] == 0x2C)
2296: return 1;
2297: // We haven't gotten output that makes sense; print out some debugging info
2298: syserror("Error SMART Status command failed");
2299: pout("Please get assistance from %s\n",PACKAGE_BUGREPORT);
2300: pout("Register values returned from SMART Status command are:\n");
2301: pout("CMD =0x%02x\n",(int)buff[0]);
2302: pout("FR =0x%02x\n",(int)buff[1]);
2303: pout("NS =0x%02x\n",(int)buff[2]);
2304: pout("SC =0x%02x\n",(int)buff[3]);
2305: pout("CL =0x%02x\n",(int)buff[4]);
2306: pout("CH =0x%02x\n",(int)buff[5]);
2307: pout("SEL=0x%02x\n",(int)buff[6]);
2308: return -1;
2309: }
2310:
2311: if (copydata)
2312: memcpy(data, buff, 512);
2313: return 0;
2314: }
2315:
2316:
2317: /////////////////////////////////////////////////////////////////////////////
2318: /// Highpoint RAID support
2319:
2320: class linux_highpoint_device
2321: : public /*implements*/ ata_device_with_command_set,
2322: public /*extends*/ linux_smart_device
2323: {
2324: public:
2325: linux_highpoint_device(smart_interface * intf, const char * dev_name,
2326: unsigned char controller, unsigned char channel, unsigned char port);
2327:
2328: protected:
2329: virtual int ata_command_interface(smart_command_set command, int select, char * data);
2330:
2331: private:
2332: unsigned char m_hpt_data[3]; ///< controller/channel/port
2333: };
2334:
2335: linux_highpoint_device::linux_highpoint_device(smart_interface * intf, const char * dev_name,
2336: unsigned char controller, unsigned char channel, unsigned char port)
2337: : smart_device(intf, dev_name, "hpt", "hpt"),
2338: linux_smart_device(O_RDONLY | O_NONBLOCK)
2339: {
2340: m_hpt_data[0] = controller; m_hpt_data[1] = channel; m_hpt_data[2] = port;
2341: set_info().info_name = strprintf("%s [hpt_disk_%u/%u/%u]", dev_name, m_hpt_data[0], m_hpt_data[1], m_hpt_data[2]);
2342: }
2343:
2344: // this implementation is derived from ata_command_interface with a header
2345: // packing for highpoint linux driver ioctl interface
2346: //
2347: // ioctl(fd,HPTIO_CTL,buff)
2348: // ^^^^^^^^^
2349: //
2350: // structure of hpt_buff
2351: // +----+----+----+----+--------------------.....---------------------+
2352: // | 1 | 2 | 3 | 4 | 5 |
2353: // +----+----+----+----+--------------------.....---------------------+
2354: //
2355: // 1: The target controller [ int ( 4 Bytes ) ]
2356: // 2: The channel of the target controllee [ int ( 4 Bytes ) ]
2357: // 3: HDIO_ ioctl call [ int ( 4 Bytes ) ]
2358: // available from ${LINUX_KERNEL_SOURCE}/Documentation/ioctl/hdio
2359: // 4: the pmport that disk attached, [ int ( 4 Bytes ) ]
2360: // if no pmport device, set to 1 or leave blank
2361: // 5: data [ void * ( var leangth ) ]
2362: //
2363: #define STRANGE_BUFFER_LENGTH (4+512*0xf8)
2364:
2365: int linux_highpoint_device::ata_command_interface(smart_command_set command, int select, char * data)
2366: {
2367: unsigned char hpt_buff[4*sizeof(int) + STRANGE_BUFFER_LENGTH];
2368: unsigned int *hpt = (unsigned int *)hpt_buff;
2369: unsigned char *buff = &hpt_buff[4*sizeof(int)];
2370: int copydata = 0;
2371: const int HDIO_DRIVE_CMD_OFFSET = 4;
2372:
2373: memset(hpt_buff, 0, 4*sizeof(int) + STRANGE_BUFFER_LENGTH);
2374: hpt[0] = m_hpt_data[0]; // controller id
2375: hpt[1] = m_hpt_data[1]; // channel number
2376: hpt[3] = m_hpt_data[2]; // pmport number
2377:
2378: buff[0]=ATA_SMART_CMD;
2379: switch (command){
2380: case CHECK_POWER_MODE:
2381: buff[0]=ATA_CHECK_POWER_MODE;
2382: copydata=1;
2383: break;
2384: case READ_VALUES:
2385: buff[2]=ATA_SMART_READ_VALUES;
2386: buff[3]=1;
2387: copydata=512;
2388: break;
2389: case READ_THRESHOLDS:
2390: buff[2]=ATA_SMART_READ_THRESHOLDS;
2391: buff[1]=buff[3]=1;
2392: copydata=512;
2393: break;
2394: case READ_LOG:
2395: buff[2]=ATA_SMART_READ_LOG_SECTOR;
2396: buff[1]=select;
2397: buff[3]=1;
2398: copydata=512;
2399: break;
2400: case WRITE_LOG:
2401: break;
2402: case IDENTIFY:
2403: buff[0]=ATA_IDENTIFY_DEVICE;
2404: buff[3]=1;
2405: copydata=512;
2406: break;
2407: case PIDENTIFY:
2408: buff[0]=ATA_IDENTIFY_PACKET_DEVICE;
2409: buff[3]=1;
2410: copydata=512;
2411: break;
2412: case ENABLE:
2413: buff[2]=ATA_SMART_ENABLE;
2414: buff[1]=1;
2415: break;
2416: case DISABLE:
2417: buff[2]=ATA_SMART_DISABLE;
2418: buff[1]=1;
2419: break;
2420: case STATUS:
2421: buff[2]=ATA_SMART_STATUS;
2422: break;
2423: case AUTO_OFFLINE:
2424: buff[2]=ATA_SMART_AUTO_OFFLINE;
2425: buff[3]=select;
2426: break;
2427: case AUTOSAVE:
2428: buff[2]=ATA_SMART_AUTOSAVE;
2429: buff[3]=select;
2430: break;
2431: case IMMEDIATE_OFFLINE:
2432: buff[2]=ATA_SMART_IMMEDIATE_OFFLINE;
2433: buff[1]=select;
2434: break;
2435: case STATUS_CHECK:
2436: buff[1]=ATA_SMART_STATUS;
2437: break;
2438: default:
2439: pout("Unrecognized command %d in linux_highpoint_command_interface()\n"
2440: "Please contact " PACKAGE_BUGREPORT "\n", command);
2441: errno=ENOSYS;
2442: return -1;
2443: }
2444:
2445: if (command==WRITE_LOG) {
2446: unsigned char task[4*sizeof(int)+sizeof(ide_task_request_t)+512];
2447: unsigned int *hpt_tf = (unsigned int *)task;
2448: ide_task_request_t *reqtask = (ide_task_request_t *)(&task[4*sizeof(int)]);
2449: task_struct_t *taskfile = (task_struct_t *)reqtask->io_ports;
2450: int retval;
2451:
2452: memset(task, 0, sizeof(task));
2453:
2454: hpt_tf[0] = m_hpt_data[0]; // controller id
2455: hpt_tf[1] = m_hpt_data[1]; // channel number
2456: hpt_tf[3] = m_hpt_data[2]; // pmport number
2457: hpt_tf[2] = HDIO_DRIVE_TASKFILE; // real hd ioctl
2458:
2459: taskfile->data = 0;
2460: taskfile->feature = ATA_SMART_WRITE_LOG_SECTOR;
2461: taskfile->sector_count = 1;
2462: taskfile->sector_number = select;
2463: taskfile->low_cylinder = 0x4f;
2464: taskfile->high_cylinder = 0xc2;
2465: taskfile->device_head = 0;
2466: taskfile->command = ATA_SMART_CMD;
2467:
2468: reqtask->data_phase = TASKFILE_OUT;
2469: reqtask->req_cmd = IDE_DRIVE_TASK_OUT;
2470: reqtask->out_size = 512;
2471: reqtask->in_size = 0;
2472:
2473: memcpy(task+sizeof(ide_task_request_t)+4*sizeof(int), data, 512);
2474:
2475: if ((retval=ioctl(get_fd(), HPTIO_CTL, task))) {
2476: if (retval==-EINVAL)
2477: pout("Kernel lacks HDIO_DRIVE_TASKFILE support; compile kernel with CONFIG_IDE_TASKFILE_IO set\n");
2478: return -1;
2479: }
2480: return 0;
2481: }
2482:
2483: if (command==STATUS_CHECK){
2484: int retval;
2485: unsigned const char normal_lo=0x4f, normal_hi=0xc2;
2486: unsigned const char failed_lo=0xf4, failed_hi=0x2c;
2487: buff[4]=normal_lo;
2488: buff[5]=normal_hi;
2489:
2490: hpt[2] = HDIO_DRIVE_TASK;
2491:
2492: if ((retval=ioctl(get_fd(), HPTIO_CTL, hpt_buff))) {
2493: if (retval==-EINVAL) {
2494: pout("Error SMART Status command via HDIO_DRIVE_TASK failed");
2495: pout("Rebuild older linux 2.2 kernels with HDIO_DRIVE_TASK support added\n");
2496: }
2497: else
2498: syserror("Error SMART Status command failed");
2499: return -1;
2500: }
2501:
2502: if (buff[4]==normal_lo && buff[5]==normal_hi)
2503: return 0;
2504:
2505: if (buff[4]==failed_lo && buff[5]==failed_hi)
2506: return 1;
2507:
2508: syserror("Error SMART Status command failed");
2509: pout("Please get assistance from " PACKAGE_HOMEPAGE "\n");
2510: pout("Register values returned from SMART Status command are:\n");
2511: pout("CMD=0x%02x\n",(int)buff[0]);
2512: pout("FR =0x%02x\n",(int)buff[1]);
2513: pout("NS =0x%02x\n",(int)buff[2]);
2514: pout("SC =0x%02x\n",(int)buff[3]);
2515: pout("CL =0x%02x\n",(int)buff[4]);
2516: pout("CH =0x%02x\n",(int)buff[5]);
2517: pout("SEL=0x%02x\n",(int)buff[6]);
2518: return -1;
2519: }
2520:
2521: #if 1
2522: if (command==IDENTIFY || command==PIDENTIFY) {
2523: unsigned char deviceid[4*sizeof(int)+512*sizeof(char)];
2524: unsigned int *hpt_id = (unsigned int *)deviceid;
2525:
2526: hpt_id[0] = m_hpt_data[0]; // controller id
2527: hpt_id[1] = m_hpt_data[1]; // channel number
2528: hpt_id[3] = m_hpt_data[2]; // pmport number
2529:
2530: hpt_id[2] = HDIO_GET_IDENTITY;
2531: if (!ioctl(get_fd(), HPTIO_CTL, deviceid) && (deviceid[4*sizeof(int)] & 0x8000))
2532: buff[0]=(command==IDENTIFY)?ATA_IDENTIFY_PACKET_DEVICE:ATA_IDENTIFY_DEVICE;
2533: }
2534: #endif
2535:
2536: hpt[2] = HDIO_DRIVE_CMD;
2537: if ((ioctl(get_fd(), HPTIO_CTL, hpt_buff)))
2538: return -1;
2539:
2540: if (command==CHECK_POWER_MODE)
2541: buff[HDIO_DRIVE_CMD_OFFSET]=buff[2];
2542:
2543: if (copydata)
2544: memcpy(data, buff+HDIO_DRIVE_CMD_OFFSET, copydata);
2545:
2546: return 0;
2547: }
2548:
2549:
2550: #if 0 // TODO: Migrate from 'smart_command_set' to 'ata_in_regs' OR remove the function
2551: // Utility function for printing warnings
2552: void printwarning(smart_command_set command){
2553: static int printed[4]={0,0,0,0};
2554: const char* message=
2555: "can not be passed through the 3ware 3w-xxxx driver. This can be fixed by\n"
2556: "applying a simple 3w-xxxx driver patch that can be found here:\n"
2557: PACKAGE_HOMEPAGE "\n"
2558: "Alternatively, upgrade your 3w-xxxx driver to version 1.02.00.037 or greater.\n\n";
2559:
2560: if (command==AUTO_OFFLINE && !printed[0]) {
2561: printed[0]=1;
2562: pout("The SMART AUTO-OFFLINE ENABLE command (smartmontools -o on option/Directive)\n%s", message);
2563: }
2564: else if (command==AUTOSAVE && !printed[1]) {
2565: printed[1]=1;
2566: pout("The SMART AUTOSAVE ENABLE command (smartmontools -S on option/Directive)\n%s", message);
2567: }
2568: else if (command==STATUS_CHECK && !printed[2]) {
2569: printed[2]=1;
2570: pout("The SMART RETURN STATUS return value (smartmontools -H option/Directive)\n%s", message);
2571: }
2572: else if (command==WRITE_LOG && !printed[3]) {
2573: printed[3]=1;
2574: pout("The SMART WRITE LOG command (smartmontools -t selective) only supported via char /dev/tw[ae] interface\n");
2575: }
2576:
2577: return;
2578: }
2579: #endif
2580:
2581:
2582: /////////////////////////////////////////////////////////////////////////////
2583: /// SCSI open with autodetection support
2584:
2585: smart_device * linux_scsi_device::autodetect_open()
2586: {
2587: // Open device
2588: if (!open())
2589: return this;
2590:
2591: // No Autodetection if device type was specified by user
2592: bool sat_only = false;
2593: if (*get_req_type()) {
2594: // Detect SAT if device object was created by scan_smart_devices().
2595: if (!(m_scanning && !strcmp(get_req_type(), "sat")))
2596: return this;
2597: sat_only = true;
2598: }
2599:
2600: // The code below is based on smartd.cpp:SCSIFilterKnown()
2601:
2602: // Get INQUIRY
2603: unsigned char req_buff[64] = {0, };
2604: int req_len = 36;
2605: if (scsiStdInquiry(this, req_buff, req_len)) {
2606: // Marvell controllers fail on a 36 bytes StdInquiry, but 64 suffices
2607: // watch this spot ... other devices could lock up here
2608: req_len = 64;
2609: if (scsiStdInquiry(this, req_buff, req_len)) {
2610: // device doesn't like INQUIRY commands
2611: close();
2612: set_err(EIO, "INQUIRY failed");
2613: return this;
2614: }
2615: }
2616:
2617: int avail_len = req_buff[4] + 5;
2618: int len = (avail_len < req_len ? avail_len : req_len);
2619: if (len < 36) {
2620: if (sat_only) {
2621: close();
2622: set_err(EIO, "INQUIRY too short for SAT");
2623: }
2624: return this;
2625: }
2626:
2627: // Use INQUIRY to detect type
2628: if (!sat_only) {
2629:
2630: // 3ware ?
2631: if (!memcmp(req_buff + 8, "3ware", 5) || !memcmp(req_buff + 8, "AMCC", 4)) {
2632: close();
2633: set_err(EINVAL, "AMCC/3ware controller, please try adding '-d 3ware,N',\n"
2634: "you may need to replace %s with /dev/twlN, /dev/twaN or /dev/tweN", get_dev_name());
2635: return this;
2636: }
2637:
2638: // DELL?
2639: if (!memcmp(req_buff + 8, "DELL PERC", 12) || !memcmp(req_buff + 8, "MegaRAID", 8)) {
2640: close();
2641: set_err(EINVAL, "DELL or MegaRaid controller, please try adding '-d megaraid,N'");
2642: return this;
2643: }
2644:
2645: // Marvell ?
2646: if (len >= 42 && !memcmp(req_buff + 36, "MVSATA", 6)) {
2647: //pout("Device %s: using '-d marvell' for ATA disk with Marvell driver\n", get_dev_name());
2648: close();
2649: smart_device_auto_ptr newdev(
2650: new linux_marvell_device(smi(), get_dev_name(), get_req_type())
2651: );
2652: newdev->open(); // TODO: Can possibly pass open fd
2653: delete this;
2654: return newdev.release();
2655: }
2656: }
2657:
2658: // SAT or USB ?
2659: {
2660: smart_device * newdev = smi()->autodetect_sat_device(this, req_buff, len);
2661: if (newdev)
2662: // NOTE: 'this' is now owned by '*newdev'
2663: return newdev;
2664: }
2665:
2666: // Nothing special found
2667:
2668: if (sat_only) {
2669: close();
2670: set_err(EIO, "Not a SAT device");
2671: }
2672: return this;
2673: }
2674:
2675:
2676: //////////////////////////////////////////////////////////////////////
2677: // USB bridge ID detection
2678:
2679: // Read USB ID from /sys file
2680: static bool read_id(const std::string & path, unsigned short & id)
2681: {
2682: FILE * f = fopen(path.c_str(), "r");
2683: if (!f)
2684: return false;
2685: int n = -1;
2686: bool ok = (fscanf(f, "%hx%n", &id, &n) == 1 && n == 4);
2687: fclose(f);
2688: return ok;
2689: }
2690:
2691: // Get USB bridge ID for "sdX"
2692: static bool get_usb_id(const char * name, unsigned short & vendor_id,
2693: unsigned short & product_id, unsigned short & version)
2694: {
2695: // Only "sdX" supported
2696: if (!(!strncmp(name, "sd", 2) && !strchr(name, '/')))
2697: return false;
2698:
2699: // Start search at dir referenced by symlink "/sys/block/sdX/device"
2700: // -> "/sys/devices/.../usb*/.../host*/target*/..."
2701: std::string dir = strprintf("/sys/block/%s/device", name);
2702:
2703: // Stop search at "/sys/devices"
2704: struct stat st;
2705: if (stat("/sys/devices", &st))
2706: return false;
2707: ino_t stop_ino = st.st_ino;
2708:
2709: // Search in parent directories until "idVendor" is found,
2710: // fail if "/sys/devices" reached or too many iterations
2711: int cnt = 0;
2712: do {
2713: dir += "/..";
2714: if (!(++cnt < 10 && !stat(dir.c_str(), &st) && st.st_ino != stop_ino))
2715: return false;
2716: } while (access((dir + "/idVendor").c_str(), 0));
2717:
2718: // Read IDs
2719: if (!( read_id(dir + "/idVendor", vendor_id)
2720: && read_id(dir + "/idProduct", product_id)
2721: && read_id(dir + "/bcdDevice", version) ))
2722: return false;
2723:
2724: if (scsi_debugmode > 1)
2725: pout("USB ID = 0x%04x:0x%04x (0x%03x)\n", vendor_id, product_id, version);
2726: return true;
2727: }
2728:
2729:
2730: //////////////////////////////////////////////////////////////////////
2731: /// Linux interface
2732:
2733: class linux_smart_interface
2734: : public /*implements*/ smart_interface
2735: {
2736: public:
2737: virtual std::string get_os_version_str();
2738:
2739: virtual std::string get_app_examples(const char * appname);
2740:
2741: virtual bool scan_smart_devices(smart_device_list & devlist, const char * type,
2742: const char * pattern = 0);
2743:
2744: protected:
2745: virtual ata_device * get_ata_device(const char * name, const char * type);
2746:
2747: virtual scsi_device * get_scsi_device(const char * name, const char * type);
2748:
2749: virtual smart_device * autodetect_smart_device(const char * name);
2750:
2751: virtual smart_device * get_custom_smart_device(const char * name, const char * type);
2752:
2753: virtual std::string get_valid_custom_dev_types_str();
2754:
2755: private:
2756: bool get_dev_list(smart_device_list & devlist, const char * pattern,
2757: bool scan_ata, bool scan_scsi, const char * req_type, bool autodetect);
2758:
2759: smart_device * missing_option(const char * opt);
2760: };
2761:
2762: std::string linux_smart_interface::get_os_version_str()
2763: {
2764: struct utsname u;
2765: if (!uname(&u))
2766: return strprintf("%s-linux-%s", u.machine, u.release);
2767: else
2768: return SMARTMONTOOLS_BUILD_HOST;
2769: }
2770:
2771: std::string linux_smart_interface::get_app_examples(const char * appname)
2772: {
2773: if (!strcmp(appname, "smartctl"))
2774: return smartctl_examples;
2775: return "";
2776: }
2777:
2778:
2779: // we are going to take advantage of the fact that Linux's devfs will only
2780: // have device entries for devices that exist. So if we get the equivalent of
2781: // ls /dev/hd[a-t], we have all the ATA devices on the system
2782: bool linux_smart_interface::get_dev_list(smart_device_list & devlist,
2783: const char * pattern, bool scan_ata, bool scan_scsi,
2784: const char * req_type, bool autodetect)
2785: {
2786: // Use glob to look for any directory entries matching the pattern
2787: glob_t globbuf;
2788: memset(&globbuf, 0, sizeof(globbuf));
2789: int retglob = glob(pattern, GLOB_ERR, NULL, &globbuf);
2790: if (retglob) {
2791: // glob failed: free memory and return
2792: globfree(&globbuf);
2793:
2794: if (retglob==GLOB_NOMATCH){
2795: pout("glob(3) found no matches for pattern %s\n", pattern);
2796: return true;
2797: }
2798:
2799: if (retglob==GLOB_NOSPACE)
2800: set_err(ENOMEM, "glob(3) ran out of memory matching pattern %s", pattern);
2801: #ifdef GLOB_ABORTED // missing in old versions of glob.h
2802: else if (retglob==GLOB_ABORTED)
2803: set_err(EINVAL, "glob(3) aborted matching pattern %s", pattern);
2804: #endif
2805: else
2806: set_err(EINVAL, "Unexplained error in glob(3) of pattern %s", pattern);
2807:
2808: return false;
2809: }
2810:
2811: // did we find too many paths?
2812: const int max_pathc = 32;
2813: int n = (int)globbuf.gl_pathc;
2814: if (n > max_pathc) {
2815: pout("glob(3) found %d > MAX=%d devices matching pattern %s: ignoring %d paths\n",
2816: n, max_pathc, pattern, n - max_pathc);
2817: n = max_pathc;
2818: }
2819:
2820: // now step through the list returned by glob. If not a link, copy
2821: // to list. If it is a link, evaluate it and see if the path ends
2822: // in "disc".
2823: for (int i = 0; i < n; i++){
2824: // see if path is a link
2825: char linkbuf[1024];
2826: int retlink = readlink(globbuf.gl_pathv[i], linkbuf, sizeof(linkbuf)-1);
2827:
2828: char tmpname[1024]={0};
2829: const char * name = 0;
2830: bool is_scsi = scan_scsi;
2831: // if not a link (or a strange link), keep it
2832: if (retlink<=0 || retlink>1023)
2833: name = globbuf.gl_pathv[i];
2834: else {
2835: // or if it's a link that points to a disc, follow it
2836: linkbuf[retlink] = 0;
2837: const char *p;
2838: if ((p=strrchr(linkbuf, '/')) && !strcmp(p+1, "disc"))
2839: // This is the branch of the code that gets followed if we are
2840: // using devfs WITH traditional compatibility links. In this
2841: // case, we add the traditional device name to the list that
2842: // is returned.
2843: name = globbuf.gl_pathv[i];
2844: else {
2845: // This is the branch of the code that gets followed if we are
2846: // using devfs WITHOUT traditional compatibility links. In
2847: // this case, we check that the link to the directory is of
2848: // the correct type, and then append "disc" to it.
2849: bool match_ata = strstr(linkbuf, "ide");
2850: bool match_scsi = strstr(linkbuf, "scsi");
2851: if (((match_ata && scan_ata) || (match_scsi && scan_scsi)) && !(match_ata && match_scsi)) {
2852: is_scsi = match_scsi;
2853: snprintf(tmpname, sizeof(tmpname), "%s/disc", globbuf.gl_pathv[i]);
2854: name = tmpname;
2855: }
2856: }
2857: }
2858:
2859: if (name) {
2860: // Found a name, add device to list.
2861: smart_device * dev;
2862: if (autodetect)
2863: dev = autodetect_smart_device(name);
2864: else if (is_scsi)
2865: dev = new linux_scsi_device(this, name, req_type, true /*scanning*/);
2866: else
2867: dev = new linux_ata_device(this, name, req_type);
2868: if (dev) // autodetect_smart_device() may return nullptr.
2869: devlist.push_back(dev);
2870: }
2871: }
2872:
2873: // free memory
2874: globfree(&globbuf);
2875:
2876: return true;
2877: }
2878:
2879: bool linux_smart_interface::scan_smart_devices(smart_device_list & devlist,
2880: const char * type, const char * pattern /*= 0*/)
2881: {
2882: if (pattern) {
2883: set_err(EINVAL, "DEVICESCAN with pattern not implemented yet");
2884: return false;
2885: }
2886:
2887: if (!type)
2888: type = "";
2889:
2890: bool scan_ata = (!*type || !strcmp(type, "ata" ));
2891: // "sat" detection will be later handled in linux_scsi_device::autodetect_open()
2892: bool scan_scsi = (!*type || !strcmp(type, "scsi") || !strcmp(type, "sat"));
2893: if (!(scan_ata || scan_scsi))
2894: return true;
2895:
2896: if (scan_ata)
2897: get_dev_list(devlist, "/dev/hd[a-t]", true, false, type, false);
2898: if (scan_scsi) {
2899: bool autodetect = !*type; // Try USB autodetection if no type specifed
2900: get_dev_list(devlist, "/dev/sd[a-z]", false, true, type, autodetect);
2901: // Support up to 104 devices
2902: get_dev_list(devlist, "/dev/sd[a-c][a-z]", false, true, type, autodetect);
2903: }
2904:
2905: // if we found traditional links, we are done
2906: if (devlist.size() > 0)
2907: return true;
2908:
2909: // else look for devfs entries without traditional links
2910: // TODO: Add udev support
2911: return get_dev_list(devlist, "/dev/discs/disc*", scan_ata, scan_scsi, type, false);
2912: }
2913:
2914: ata_device * linux_smart_interface::get_ata_device(const char * name, const char * type)
2915: {
2916: return new linux_ata_device(this, name, type);
2917: }
2918:
2919: scsi_device * linux_smart_interface::get_scsi_device(const char * name, const char * type)
2920: {
2921: return new linux_scsi_device(this, name, type);
2922: }
2923:
2924: smart_device * linux_smart_interface::missing_option(const char * opt)
2925: {
2926: set_err(EINVAL, "requires option '%s'", opt);
2927: return 0;
2928: }
2929:
2930: // Return true if STR starts with PREFIX.
2931: static inline bool str_starts_with(const char * str, const char * prefix)
2932: {
2933: return !strncmp(str, prefix, strlen(prefix));
2934: }
2935:
2936: // Return kernel release as integer ("2.6.31" -> 206031)
2937: static unsigned get_kernel_release()
2938: {
2939: struct utsname u;
2940: if (uname(&u))
2941: return 0;
2942: unsigned x = 0, y = 0, z = 0;
2943: if (!(sscanf(u.release, "%u.%u.%u", &x, &y, &z) == 3
2944: && x < 100 && y < 100 && z < 1000 ))
2945: return 0;
2946: return x * 100000 + y * 1000 + z;
2947: }
2948:
2949: // Guess device type (ata or scsi) based on device name (Linux
2950: // specific) SCSI device name in linux can be sd, sr, scd, st, nst,
2951: // osst, nosst and sg.
2952: smart_device * linux_smart_interface::autodetect_smart_device(const char * name)
2953: {
2954: const char * test_name = name;
2955:
2956: // Dereference symlinks
2957: struct stat st;
2958: std::string pathbuf;
2959: if (!lstat(name, &st) && S_ISLNK(st.st_mode)) {
2960: char * p = realpath(name, (char *)0);
2961: if (p) {
2962: pathbuf = p;
2963: free(p);
2964: test_name = pathbuf.c_str();
2965: }
2966: }
2967:
2968: // Remove the leading /dev/... if it's there
2969: static const char dev_prefix[] = "/dev/";
2970: if (str_starts_with(test_name, dev_prefix))
2971: test_name += strlen(dev_prefix);
2972:
2973: // form /dev/h* or h*
2974: if (str_starts_with(test_name, "h"))
2975: return new linux_ata_device(this, name, "");
2976:
2977: // form /dev/ide/* or ide/*
2978: if (str_starts_with(test_name, "ide/"))
2979: return new linux_ata_device(this, name, "");
2980:
2981: // form /dev/s* or s*
2982: if (str_starts_with(test_name, "s")) {
2983:
2984: // Try to detect possible USB->(S)ATA bridge
2985: unsigned short vendor_id = 0, product_id = 0, version = 0;
2986: if (get_usb_id(test_name, vendor_id, product_id, version)) {
2987: const char * usbtype = get_usb_dev_type_by_id(vendor_id, product_id, version);
2988: if (!usbtype)
2989: return 0;
2990:
2991: // Kernels before 2.6.29 do not support the sense data length
2992: // required for SAT ATA PASS-THROUGH(16)
2993: if (!strcmp(usbtype, "sat") && get_kernel_release() < 206029)
2994: usbtype = "sat,12";
2995:
2996: // Return SAT/USB device for this type
2997: // (Note: linux_scsi_device::autodetect_open() will not be called in this case)
2998: return get_sat_device(usbtype, new linux_scsi_device(this, name, ""));
2999: }
3000:
3001: // No USB bridge found, assume regular SCSI device
3002: return new linux_scsi_device(this, name, "");
3003: }
3004:
3005: // form /dev/scsi/* or scsi/*
3006: if (str_starts_with(test_name, "scsi/"))
3007: return new linux_scsi_device(this, name, "");
3008:
3009: // form /dev/ns* or ns*
3010: if (str_starts_with(test_name, "ns"))
3011: return new linux_scsi_device(this, name, "");
3012:
3013: // form /dev/os* or os*
3014: if (str_starts_with(test_name, "os"))
3015: return new linux_scsi_device(this, name, "");
3016:
3017: // form /dev/nos* or nos*
3018: if (str_starts_with(test_name, "nos"))
3019: return new linux_scsi_device(this, name, "");
3020:
3021: // form /dev/tw[ael]* or tw[ael]*
3022: if (str_starts_with(test_name, "tw") && strchr("ael", test_name[2]))
3023: return missing_option("-d 3ware,N");
3024:
3025: // form /dev/cciss/* or cciss/*
3026: if (str_starts_with(test_name, "cciss/"))
3027: return missing_option("-d cciss,N");
3028:
3029: // we failed to recognize any of the forms
3030: return 0;
3031: }
3032:
3033: smart_device * linux_smart_interface::get_custom_smart_device(const char * name, const char * type)
3034: {
3035: // Marvell ?
3036: if (!strcmp(type, "marvell"))
3037: return new linux_marvell_device(this, name, type);
3038:
3039: // 3Ware ?
3040: int disknum = -1, n1 = -1, n2 = -1;
3041: if (sscanf(type, "3ware,%n%d%n", &n1, &disknum, &n2) == 1 || n1 == 6) {
3042: if (n2 != (int)strlen(type)) {
3043: set_err(EINVAL, "Option -d 3ware,N requires N to be a non-negative integer");
3044: return 0;
3045: }
3046: if (!(0 <= disknum && disknum <= 127)) {
3047: set_err(EINVAL, "Option -d 3ware,N (N=%d) must have 0 <= N <= 127", disknum);
3048: return 0;
3049: }
3050:
3051: if (!strncmp(name, "/dev/twl", 8))
3052: return new linux_escalade_device(this, name, linux_escalade_device::AMCC_3WARE_9700_CHAR, disknum);
3053: else if (!strncmp(name, "/dev/twa", 8))
3054: return new linux_escalade_device(this, name, linux_escalade_device::AMCC_3WARE_9000_CHAR, disknum);
3055: else if (!strncmp(name, "/dev/twe", 8))
3056: return new linux_escalade_device(this, name, linux_escalade_device::AMCC_3WARE_678K_CHAR, disknum);
3057: else
3058: return new linux_escalade_device(this, name, linux_escalade_device::AMCC_3WARE_678K, disknum);
3059: }
3060:
3061: // Areca?
3062: disknum = n1 = n2 = -1;
3063: if (sscanf(type, "areca,%n%d%n", &n1, &disknum, &n2) == 1 || n1 == 6) {
3064: if (n2 != (int)strlen(type)) {
3065: set_err(EINVAL, "Option -d areca,N requires N to be a non-negative integer");
3066: return 0;
3067: }
3068: if (!(1 <= disknum && disknum <= 24)) {
3069: set_err(EINVAL, "Option -d areca,N (N=%d) must have 1 <= N <= 24", disknum);
3070: return 0;
3071: }
3072: return new linux_areca_device(this, name, disknum);
3073: }
3074:
3075: // Highpoint ?
3076: int controller = -1, channel = -1; disknum = 1;
3077: n1 = n2 = -1; int n3 = -1;
3078: if (sscanf(type, "hpt,%n%d/%d%n/%d%n", &n1, &controller, &channel, &n2, &disknum, &n3) >= 2 || n1 == 4) {
3079: int len = strlen(type);
3080: if (!(n2 == len || n3 == len)) {
3081: set_err(EINVAL, "Option '-d hpt,L/M/N' supports 2-3 items");
3082: return 0;
3083: }
3084: if (!(1 <= controller && controller <= 8)) {
3085: set_err(EINVAL, "Option '-d hpt,L/M/N' invalid controller id L supplied");
3086: return 0;
3087: }
3088: if (!(1 <= channel && channel <= 16)) {
3089: set_err(EINVAL, "Option '-d hpt,L/M/N' invalid channel number M supplied");
3090: return 0;
3091: }
3092: if (!(1 <= disknum && disknum <= 15)) {
3093: set_err(EINVAL, "Option '-d hpt,L/M/N' invalid pmport number N supplied");
3094: return 0;
3095: }
3096: return new linux_highpoint_device(this, name, controller, channel, disknum);
3097: }
3098:
3099: #ifdef HAVE_LINUX_CCISS_IOCTL_H
3100: // CCISS ?
3101: disknum = n1 = n2 = -1;
3102: if (sscanf(type, "cciss,%n%d%n", &n1, &disknum, &n2) == 1 || n1 == 6) {
3103: if (n2 != (int)strlen(type)) {
3104: set_err(EINVAL, "Option -d cciss,N requires N to be a non-negative integer");
3105: return 0;
3106: }
3107: if (!(0 <= disknum && disknum <= 127)) {
3108: set_err(EINVAL, "Option -d cciss,N (N=%d) must have 0 <= N <= 127", disknum);
3109: return 0;
3110: }
3111: return new linux_cciss_device(this, name, disknum);
3112: }
3113: #endif // HAVE_LINUX_CCISS_IOCTL_H
3114:
3115: // MegaRAID ?
3116: if (sscanf(type, "megaraid,%d", &disknum) == 1) {
3117: return new linux_megaraid_device(this, name, 0, disknum);
3118: }
3119: return 0;
3120: }
3121:
3122: std::string linux_smart_interface::get_valid_custom_dev_types_str()
3123: {
3124: return "marvell, areca,N, 3ware,N, hpt,L/M/N, megaraid,N"
3125: #ifdef HAVE_LINUX_CCISS_IOCTL_H
3126: ", cciss,N"
3127: #endif
3128: ;
3129: }
3130:
3131: } // namespace
3132:
3133:
3134: /////////////////////////////////////////////////////////////////////////////
3135: /// Initialize platform interface and register with smi()
3136:
3137: void smart_interface::init()
3138: {
3139: static os_linux::linux_smart_interface the_interface;
3140: smart_interface::set(&the_interface);
3141: }
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