File: raid_hba.cpp

package info (click to toggle)
raidutils 0.0.6-23
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 10,840 kB
  • sloc: cpp: 39,794; ansic: 22,774; sh: 8,306; makefile: 19
file content (592 lines) | stat: -rw-r--r-- 15,257 bytes parent folder | download | duplicates (9)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
/* Copyright (c) 1996-2004, Adaptec Corporation
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name of the Adaptec Corporation nor the names of its
 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

//File - RAID_HBA.CPP
//***************************************************************************
//
//Description:
//
//    This file contains the function definitions for the dptRAIDhba_C
//class.
//
//Author:	Doug Anderson
//Date:		3/25/93
//
//Editors:
//
//Remarks:
//
//
//***************************************************************************

//Include Files -------------------------------------------------------------

#include	"allfiles.hpp"	// All engine include files

//Function - dptRAIDhba_C::dptRAIDhba_C() - start
//===========================================================================
//
//Description:
//
//    This function is the constructor for the dptRAIDhba_C class.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

dptRAIDhba_C::dptRAIDhba_C()
{

  // Default to DPT logical array page #1 (mode page 0x3b)
lapPage = LAP_DPT1;

privateEngFlags = 0;

  // Set up the default RAID definitions
setDefRAID();

}
//dptRAIDhba_C::dptRAIDhba_C() - end


//Function - dptRAIDhba_C::postAddLog() - start
//===========================================================================
//
//Description:
//
//    This function is called after an object has been added to the
//logical device list.  This function updates the Hot Spare protection
//status for all RAID drives attached to this HBA.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

void	dptRAIDhba_C::postAddLog(dptCoreDev_C *dev_P)
{

if (dev_P->isMyObject(this) && dev_P->isLogical())
   updateHSprotection();

}
//dptRAIDhba_C::postAddLog() - end


//Function - dptRAIDhba_C::setDefRAID() - start
//===========================================================================
//
//Description:
//
//    This function sets up default RAID definitions.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

void	dptRAIDhba_C::setDefRAID()
{

   raidDef_S	*def_P;

  // Define RAID 0
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
//   def_P->refNum	= 0;
//   def_P->type		= 0;
//   def_P->minDrives	= 2;
   def_P->maxDrives	= 0xffff;
   def_P->redundants	= 0;
//   def_P->minStripe	= 1;
//   def_P->maxStripe	= 0xffffffffL;
//   def_P->chanCount	= 0xffff;
   def_P->required	|= FLG_REQ_SAME_STRIPE_SZ |
			   FLG_REQ_SAME_NUM_STRIPE |
			   FLG_REQ_UNDER_MULTIPLE;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_0;
}

  // Define RAID 1
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
   def_P->refNum	= 1;
   def_P->type		= 1;
   def_P->minDrives	= 2;
   def_P->maxDrives	= 2;
   def_P->redundants	= 0x82;
//   def_P->minStripe	= 1;
//   def_P->maxStripe	= 0xffffffffL;
//   def_P->chanCount	= 0xffff;
   def_P->required	|= FLG_REQ_SAME_STRIPE_SZ |
			   FLG_REQ_SAME_NUM_STRIPE;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_1;
}

  // Define RAID 3
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
   def_P->refNum	= 3;
   def_P->type		= 3;
   def_P->minDrives	= 3;
   def_P->maxDrives	= 0xffff;
//   def_P->redundants	= 1;
//   def_P->minStripe	= 1;
   def_P->maxStripe	= 1;
//   def_P->chanCount	= 0xffff;
   def_P->required	|= FLG_REQ_SAME_STRIPE_SZ |
			   FLG_REQ_SAME_NUM_STRIPE |
			   FLG_REQ_UNDER_MULTIPLE |
			   FLG_REQ_POWER_2_PLUS;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_3;
}

  // Define RAID 5
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
   def_P->refNum	= 5;
   def_P->type		= 5;
   def_P->minDrives	= 3;
   def_P->maxDrives	= 0xffff;
//   def_P->redundants	= 1;
   def_P->minStripe	= 1;
//   def_P->maxStripe	= 0xffffffffL;
//   def_P->chanCount	= 0xffff;
   def_P->required	|= FLG_REQ_SAME_STRIPE_SZ |
			   FLG_REQ_SAME_NUM_STRIPE |
			   FLG_REQ_UNDER_MULTIPLE;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_5;
}

  // Define an HBA Hot Spare
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
   def_P->refNum	= RAID_HOT_SPARE;
   def_P->type		= RAID_HOT_SPARE;
   def_P->minDrives	= 1;
   def_P->maxDrives	= 1;
   def_P->redundants	= 0;
//   def_P->minStripe	= 1;
//   def_P->maxStripe	= 0xffffffffL;
//   def_P->chanCount	= 0xffff;
   def_P->required	|= FLG_REQ_SUPPRESS | FLG_REQ_RESTRICT;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_HOT_SPARE;
}

  // Define a re-directed drive
def_P = new raidDef_S;
if (def_P!=NULL) {
     // Initialize the RAID definition data
   def_P->refNum	= RAID_REDIRECT;
   def_P->type		= RAID_REDIRECT;
   def_P->minDrives	= 1;
   def_P->maxDrives	= 1;
   def_P->redundants	= 0;
//   def_P->minStripe	= 1;
//   def_P->maxStripe	= 0xffffffffL;
//   def_P->chanCount	= 0xffff;
//   def_P->required	= 0;
//   def_P->devType	= DPT_SCSI_DASD;
   def_P->permit	|= FLG_COMP_EMULATED;

     // Add to the RAID definition list
   enterRAIDdef(def_P);

     // Set the RAID support flag
   raidSupport		|= FLG_RAID_REDIRECT;
}

}
//dptRAIDhba_C::setDefRAID() - end


//Function - dptRAIDhba_C::updateHSprotection() - start
//===========================================================================
//
//Description:
//
//    This function updates the Hot Spare protection status of RAID drives
//with at least 1 redundant drive.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

void	dptRAIDhba_C::updateHSprotection()
{
	uLONG	hsMaxLBA = 0;

  // Find the largest optimal Hot Spare
dptRAIDdev_C *dev_P = (dptRAIDdev_C *) logList.reset();
while (dev_P!=NULL) {
     // If the device is a valid Hot-Spare...
   if (dev_P->isValidHotSpare()) {
	// Get the Hot-Spare's physical component
      dptRAIDdev_C *comp_P = (dptRAIDdev_C *) dev_P->compList.reset();
      if (comp_P != NULL) {
	   // If the physical component is ready...
	   // (for IBM drives with a switch to turn off the motor)
	   // (done at Olivetti's request)
	 if (comp_P->isReady()) {
	      // Get the largest optimal Hot Spare
	    if (dev_P->getLastLBA() > hsMaxLBA)
	       hsMaxLBA = dev_P->getLastLBA();
	 }
      }
   }
   dev_P = (dptRAIDdev_C *) logList.next();
}

dev_P = (dptRAIDdev_C *) logList.reset();
while (dev_P!=NULL) {
     // If the device is attached to this HBA...
   if (dev_P->isMyObject(this))
	// Set the Hot Spare coverage status
      dev_P->setHScoverage(hsMaxLBA);
   dev_P = (dptRAIDdev_C *) logList.next();
}

/*	// clear any old HS protectecion flags
	dptRAIDdev_C *dev_P = (dptRAIDdev_C *) logList.reset();
	while (dev_P!=NULL) {
		// If the device is attached to this HBA...
		if (dev_P->isMyObject(this))
			// Set the Hot Spare coverage status
			dev_P->setHScoverage(0);
		
		dev_P = (dptRAIDdev_C *) logList.next();
	}
   
	// look at all the HS's and find arrays it protects
	dptRAIDdev_C *hs_P = (dptRAIDdev_C *) logList.reset();
	while (hs_P!=NULL) {
		// If the device is a valid Hot-Spare...
		if (hs_P->isValidHotSpare()) {
			// Get the Hot-Spare's physical component
			dptRAIDdev_C *comp_P = (dptRAIDdev_C *) hs_P->compList.reset();
			if (comp_P != NULL) {
				// If the physical component is ready...
				// (for IBM drives with a switch to turn off the motor)
				// (done at Olivetti's request)
				if (comp_P->isReady()) {

					// get the addr of the HS
					dptAddr_S hsAddr = hs_P->getAddr();

					// now we go thru the list again, finding components that are on the same channel
					// if they are see if the HS will protect it iff the array is not already protected
					dptRAIDdev_C *raid_P = (dptRAIDdev_C *) logList.reset();

					// look thru all the arrays
					while(raid_P) {

						// if the array is attached to this hba and its not already protected
						if (raid_P->isMyObject(this) && !raid_P->isHSprotected()) {
							
							// get the addr of the array
							dptAddr_S raidAddr = raid_P->getAddr();

							// if the channels match, let it determine if it is protected
							if (hsAddr.chan == raidAddr.chan)
								raid_P->setHScoverage(hs_P->getLastLBA());

						}
						raid_P = (dptRAIDdev_C *) logList.next();
					}

					// set the logical list back to our hotspare so we can continue the search
					logList.exists(hs_P);
				}
			}
		}
		hs_P = (dptRAIDdev_C *) logList.next();
	} */
}
//dptRAIDhba_C::updateHSprotection() - end


//Function - dptRAIDhba_C::postDelete() - start
//===========================================================================
//
//Description:
//
//    This function is called after an object has been removed from
//all core lists and before the object is freed from memory.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

void	dptRAIDhba_C::postDelete(dptCoreObj_C *obj_P)
{

if (obj_P->isDevice())
     // If the device is a Hot Spare...
   if (((dptRAIDdev_C *)obj_P)->getRAIDtype()==RAID_HOT_SPARE)
	// Update the Hot Spare protection status
      updateHSprotection();
}
//dptRAIDhba_C::postDelete() - end


//Function - dptRAIDhba_C::isRAIDcapable() - start
//===========================================================================
//
//Description:
//
//    This function determines if this HBA is capable of configuring
//RAID devices.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

uSHORT	dptRAIDhba_C::isRAIDcapable()
{

   uSHORT	capable = 0;

  // If the device is capable of supportng RAID...
if (isI2O())
	capable = 1;
else if (isRAIDmodule() && is512kCache() && (flags & FLG_HBA_RAID_FW))
	capable = 1;

return (capable);

}
//dptRAIDhba_C::isRAIDcapable() - end


//Function - dptRAIDhba_C::isRAIDready() - start
//===========================================================================
//
//Description:
//
//    This function determines if this HBA can configure RAID devices.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

uSHORT	dptRAIDhba_C::isRAIDready()
{

   uSHORT	ready = 0;

  // If the device is capable of supportng RAID...
if (isRAIDcapable())
   ready = findDASD(phyList);

return (ready);

}
//dptRAIDhba_C::isRAIDready() - end


//Function - dptRAIDhba_C::getObjFlags() - start
//===========================================================================
//
//Description:
//
//    This function sets RAID HBA flags.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

void	dptRAIDhba_C::getObjFlags(uSHORT &flg)
{

  // Set base class flags
dptSCSIhba_C::getObjFlags(flg);

  // If this object is capable of supporting RAID...
if (isRAIDcapable())
   flg |= FLG_HBA_RAID_CAPABLE;

  // If this object can currently support RAID...
if (isRAIDready())
   flg |= FLG_HBA_RAID_READY;

}
//dptRAIDhba_C::getObjFlags() - end


//Function - dptRAIDhba_C::handleMessage() - start
//===========================================================================
//
//Description:
//
//    This routine handles DPT events for the dptRAIDhba_C class.
//
//Parameters:
//
//Return Value:
//
//Global Variables Affected:
//
//Remarks: (Side effects, Assumptions, Warnings...)
//
//
//---------------------------------------------------------------------------

DPT_RTN_T	dptRAIDhba_C::handleMessage(DPT_MSG_T	message,
					    dptBuffer_S *fromEng_P,
					    dptBuffer_S *toEng_P
					   )
{

   DPT_RTN_T	retVal = MSG_RTN_IGNORED;

switch (message) {

     // Create a new RAID device
   case MSG_RAID_NEW:
	if (isRAIDready())
	   retVal = newRAID(fromEng_P,toEng_P,0);
	break;

     // Create an invalid (ghosted) RAID device
   case MSG_RAID_GHOST:
	if (isRAIDready())
	   retVal = newRAID(fromEng_P,toEng_P,1);
	break;

     // Create an invalid (ghosted) RAID device
   case MSG_GET_MEMBANK_CAPACITIES:
	retVal = rtnMembankCapacities(fromEng_P);
	break;

   default:
	  // Call base class event handler
	retVal = dptSCSIhba_C::handleMessage(message,fromEng_P,toEng_P);
	break;

} // end switch

return (retVal);

}
//dptRAIDhba_C::handleMessage() - end