forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 17
/
DAC960.c
7213 lines (6684 loc) · 260 KB
/
DAC960.c
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
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
Copyright 1998-2001 by Leonard N. Zubkoff <[email protected]>
Portions Copyright 2002 by Mylex (An IBM Business Unit)
This program is free software; you may redistribute and/or modify it under
the terms of the GNU General Public License Version 2 as published by the
Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for complete details.
*/
#define DAC960_DriverVersion "2.5.48"
#define DAC960_DriverDate "14 May 2006"
#include <linux/module.h>
#include <linux/types.h>
#include <linux/miscdevice.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/genhd.h>
#include <linux/hdreg.h>
#include <linux/blkpg.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/reboot.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/jiffies.h>
#include <linux/random.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include "DAC960.h"
#define DAC960_GAM_MINOR 252
static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
static int DAC960_ControllerCount;
static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
static long disk_size(DAC960_Controller_T *p, int drive_nr)
{
if (p->FirmwareType == DAC960_V1_Controller) {
if (drive_nr >= p->LogicalDriveCount)
return 0;
return p->V1.LogicalDriveInformation[drive_nr].
LogicalDriveSize;
} else {
DAC960_V2_LogicalDeviceInfo_T *i =
p->V2.LogicalDeviceInformation[drive_nr];
if (i == NULL)
return 0;
return i->ConfigurableDeviceSize;
}
}
static int DAC960_open(struct inode *inode, struct file *file)
{
struct gendisk *disk = inode->i_bdev->bd_disk;
DAC960_Controller_T *p = disk->queue->queuedata;
int drive_nr = (long)disk->private_data;
if (p->FirmwareType == DAC960_V1_Controller) {
if (p->V1.LogicalDriveInformation[drive_nr].
LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
return -ENXIO;
} else {
DAC960_V2_LogicalDeviceInfo_T *i =
p->V2.LogicalDeviceInformation[drive_nr];
if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
return -ENXIO;
}
check_disk_change(inode->i_bdev);
if (!get_capacity(p->disks[drive_nr]))
return -ENXIO;
return 0;
}
static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
{
struct gendisk *disk = bdev->bd_disk;
DAC960_Controller_T *p = disk->queue->queuedata;
int drive_nr = (long)disk->private_data;
if (p->FirmwareType == DAC960_V1_Controller) {
geo->heads = p->V1.GeometryTranslationHeads;
geo->sectors = p->V1.GeometryTranslationSectors;
geo->cylinders = p->V1.LogicalDriveInformation[drive_nr].
LogicalDriveSize / (geo->heads * geo->sectors);
} else {
DAC960_V2_LogicalDeviceInfo_T *i =
p->V2.LogicalDeviceInformation[drive_nr];
switch (i->DriveGeometry) {
case DAC960_V2_Geometry_128_32:
geo->heads = 128;
geo->sectors = 32;
break;
case DAC960_V2_Geometry_255_63:
geo->heads = 255;
geo->sectors = 63;
break;
default:
DAC960_Error("Illegal Logical Device Geometry %d\n",
p, i->DriveGeometry);
return -EINVAL;
}
geo->cylinders = i->ConfigurableDeviceSize /
(geo->heads * geo->sectors);
}
return 0;
}
static int DAC960_media_changed(struct gendisk *disk)
{
DAC960_Controller_T *p = disk->queue->queuedata;
int drive_nr = (long)disk->private_data;
if (!p->LogicalDriveInitiallyAccessible[drive_nr])
return 1;
return 0;
}
static int DAC960_revalidate_disk(struct gendisk *disk)
{
DAC960_Controller_T *p = disk->queue->queuedata;
int unit = (long)disk->private_data;
set_capacity(disk, disk_size(p, unit));
return 0;
}
static struct block_device_operations DAC960_BlockDeviceOperations = {
.owner = THIS_MODULE,
.open = DAC960_open,
.getgeo = DAC960_getgeo,
.media_changed = DAC960_media_changed,
.revalidate_disk = DAC960_revalidate_disk,
};
/*
DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
Copyright Notice, and Electronic Mail Address.
*/
static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
{
DAC960_Announce("***** DAC960 RAID Driver Version "
DAC960_DriverVersion " of "
DAC960_DriverDate " *****\n", Controller);
DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
"<[email protected]>\n", Controller);
}
/*
DAC960_Failure prints a standardized error message, and then returns false.
*/
static boolean DAC960_Failure(DAC960_Controller_T *Controller,
unsigned char *ErrorMessage)
{
DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
Controller);
if (Controller->IO_Address == 0)
DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
"PCI Address 0x%X\n", Controller,
Controller->Bus, Controller->Device,
Controller->Function, Controller->PCI_Address);
else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
"0x%X PCI Address 0x%X\n", Controller,
Controller->Bus, Controller->Device,
Controller->Function, Controller->IO_Address,
Controller->PCI_Address);
DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
return false;
}
/*
init_dma_loaf() and slice_dma_loaf() are helper functions for
aggregating the dma-mapped memory for a well-known collection of
data structures that are of different lengths.
These routines don't guarantee any alignment. The caller must
include any space needed for alignment in the sizes of the structures
that are passed in.
*/
static boolean init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
size_t len)
{
void *cpu_addr;
dma_addr_t dma_handle;
cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
if (cpu_addr == NULL)
return false;
loaf->cpu_free = loaf->cpu_base = cpu_addr;
loaf->dma_free =loaf->dma_base = dma_handle;
loaf->length = len;
memset(cpu_addr, 0, len);
return true;
}
static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
dma_addr_t *dma_handle)
{
void *cpu_end = loaf->cpu_free + len;
void *cpu_addr = loaf->cpu_free;
BUG_ON(cpu_end > loaf->cpu_base + loaf->length);
*dma_handle = loaf->dma_free;
loaf->cpu_free = cpu_end;
loaf->dma_free += len;
return cpu_addr;
}
static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
{
if (loaf_handle->cpu_base != NULL)
pci_free_consistent(dev, loaf_handle->length,
loaf_handle->cpu_base, loaf_handle->dma_base);
}
/*
DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
data structures for Controller. It returns true on success and false on
failure.
*/
static boolean DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
{
int CommandAllocationLength, CommandAllocationGroupSize;
int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
void *AllocationPointer = NULL;
void *ScatterGatherCPU = NULL;
dma_addr_t ScatterGatherDMA;
struct pci_pool *ScatterGatherPool;
void *RequestSenseCPU = NULL;
dma_addr_t RequestSenseDMA;
struct pci_pool *RequestSensePool = NULL;
if (Controller->FirmwareType == DAC960_V1_Controller)
{
CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
ScatterGatherPool = pci_pool_create("DAC960_V1_ScatterGather",
Controller->PCIDevice,
DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
if (ScatterGatherPool == NULL)
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION (SG)");
Controller->ScatterGatherPool = ScatterGatherPool;
}
else
{
CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
ScatterGatherPool = pci_pool_create("DAC960_V2_ScatterGather",
Controller->PCIDevice,
DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
if (ScatterGatherPool == NULL)
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION (SG)");
RequestSensePool = pci_pool_create("DAC960_V2_RequestSense",
Controller->PCIDevice, sizeof(DAC960_SCSI_RequestSense_T),
sizeof(int), 0);
if (RequestSensePool == NULL) {
pci_pool_destroy(ScatterGatherPool);
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION (SG)");
}
Controller->ScatterGatherPool = ScatterGatherPool;
Controller->V2.RequestSensePool = RequestSensePool;
}
Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
Controller->FreeCommands = NULL;
for (CommandIdentifier = 1;
CommandIdentifier <= Controller->DriverQueueDepth;
CommandIdentifier++)
{
DAC960_Command_T *Command;
if (--CommandsRemaining <= 0)
{
CommandsRemaining =
Controller->DriverQueueDepth - CommandIdentifier + 1;
if (CommandsRemaining > CommandAllocationGroupSize)
CommandsRemaining = CommandAllocationGroupSize;
CommandGroupByteCount =
CommandsRemaining * CommandAllocationLength;
AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
if (AllocationPointer == NULL)
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION");
}
Command = (DAC960_Command_T *) AllocationPointer;
AllocationPointer += CommandAllocationLength;
Command->CommandIdentifier = CommandIdentifier;
Command->Controller = Controller;
Command->Next = Controller->FreeCommands;
Controller->FreeCommands = Command;
Controller->Commands[CommandIdentifier-1] = Command;
ScatterGatherCPU = pci_pool_alloc(ScatterGatherPool, SLAB_ATOMIC,
&ScatterGatherDMA);
if (ScatterGatherCPU == NULL)
return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
if (RequestSensePool != NULL) {
RequestSenseCPU = pci_pool_alloc(RequestSensePool, SLAB_ATOMIC,
&RequestSenseDMA);
if (RequestSenseCPU == NULL) {
pci_pool_free(ScatterGatherPool, ScatterGatherCPU,
ScatterGatherDMA);
return DAC960_Failure(Controller,
"AUXILIARY STRUCTURE CREATION");
}
}
if (Controller->FirmwareType == DAC960_V1_Controller) {
Command->cmd_sglist = Command->V1.ScatterList;
Command->V1.ScatterGatherList =
(DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
} else {
Command->cmd_sglist = Command->V2.ScatterList;
Command->V2.ScatterGatherList =
(DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
Command->V2.RequestSense =
(DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
Command->V2.RequestSenseDMA = RequestSenseDMA;
}
}
return true;
}
/*
DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
structures for Controller.
*/
static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
{
int i;
struct pci_pool *ScatterGatherPool = Controller->ScatterGatherPool;
struct pci_pool *RequestSensePool = NULL;
void *ScatterGatherCPU;
dma_addr_t ScatterGatherDMA;
void *RequestSenseCPU;
dma_addr_t RequestSenseDMA;
DAC960_Command_T *CommandGroup = NULL;
if (Controller->FirmwareType == DAC960_V2_Controller)
RequestSensePool = Controller->V2.RequestSensePool;
Controller->FreeCommands = NULL;
for (i = 0; i < Controller->DriverQueueDepth; i++)
{
DAC960_Command_T *Command = Controller->Commands[i];
if (Command == NULL)
continue;
if (Controller->FirmwareType == DAC960_V1_Controller) {
ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
RequestSenseCPU = NULL;
RequestSenseDMA = (dma_addr_t)0;
} else {
ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
RequestSenseCPU = (void *)Command->V2.RequestSense;
RequestSenseDMA = Command->V2.RequestSenseDMA;
}
if (ScatterGatherCPU != NULL)
pci_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
if (RequestSenseCPU != NULL)
pci_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
if ((Command->CommandIdentifier
% Controller->CommandAllocationGroupSize) == 1) {
/*
* We can't free the group of commands until all of the
* request sense and scatter gather dma structures are free.
* Remember the beginning of the group, but don't free it
* until we've reached the beginning of the next group.
*/
kfree(CommandGroup);
CommandGroup = Command;
}
Controller->Commands[i] = NULL;
}
kfree(CommandGroup);
if (Controller->CombinedStatusBuffer != NULL)
{
kfree(Controller->CombinedStatusBuffer);
Controller->CombinedStatusBuffer = NULL;
Controller->CurrentStatusBuffer = NULL;
}
if (ScatterGatherPool != NULL)
pci_pool_destroy(ScatterGatherPool);
if (Controller->FirmwareType == DAC960_V1_Controller)
return;
if (RequestSensePool != NULL)
pci_pool_destroy(RequestSensePool);
for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
kfree(Controller->V2.LogicalDeviceInformation[i]);
Controller->V2.LogicalDeviceInformation[i] = NULL;
}
for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
{
kfree(Controller->V2.PhysicalDeviceInformation[i]);
Controller->V2.PhysicalDeviceInformation[i] = NULL;
kfree(Controller->V2.InquiryUnitSerialNumber[i]);
Controller->V2.InquiryUnitSerialNumber[i] = NULL;
}
}
/*
DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
Firmware Controllers.
*/
static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
{
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
Command->V1.CommandStatus = 0;
}
/*
DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
Firmware Controllers.
*/
static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
{
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
Command->V2.CommandStatus = 0;
}
/*
DAC960_AllocateCommand allocates a Command structure from Controller's
free list. During driver initialization, a special initialization command
has been placed on the free list to guarantee that command allocation can
never fail.
*/
static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
*Controller)
{
DAC960_Command_T *Command = Controller->FreeCommands;
if (Command == NULL) return NULL;
Controller->FreeCommands = Command->Next;
Command->Next = NULL;
return Command;
}
/*
DAC960_DeallocateCommand deallocates Command, returning it to Controller's
free list.
*/
static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
Command->Request = NULL;
Command->Next = Controller->FreeCommands;
Controller->FreeCommands = Command;
}
/*
DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
*/
static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
{
spin_unlock_irq(&Controller->queue_lock);
__wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
spin_lock_irq(&Controller->queue_lock);
}
/*
DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers.
*/
static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandMailbox_T *NextCommandMailbox =
Controller->V2.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress);
Controller->V2.PreviousCommandMailbox2 =
Controller->V2.PreviousCommandMailbox1;
Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
NextCommandMailbox = Controller->V2.FirstCommandMailbox;
Controller->V2.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
*/
static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandMailbox_T *NextCommandMailbox =
Controller->V2.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
Controller->V2.PreviousCommandMailbox2 =
Controller->V2.PreviousCommandMailbox1;
Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
NextCommandMailbox = Controller->V2.FirstCommandMailbox;
Controller->V2.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
*/
static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandMailbox_T *NextCommandMailbox =
Controller->V2.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
Controller->V2.PreviousCommandMailbox2 =
Controller->V2.PreviousCommandMailbox1;
Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
NextCommandMailbox = Controller->V2.FirstCommandMailbox;
Controller->V2.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
Controllers with Dual Mode Firmware.
*/
static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandMailbox_T *NextCommandMailbox =
Controller->V1.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
Controller->V1.PreviousCommandMailbox2 =
Controller->V1.PreviousCommandMailbox1;
Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
NextCommandMailbox = Controller->V1.FirstCommandMailbox;
Controller->V1.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
Controllers with Single Mode Firmware.
*/
static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandMailbox_T *NextCommandMailbox =
Controller->V1.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
Controller->V1.PreviousCommandMailbox2 =
Controller->V1.PreviousCommandMailbox1;
Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
NextCommandMailbox = Controller->V1.FirstCommandMailbox;
Controller->V1.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
Controllers with Dual Mode Firmware.
*/
static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandMailbox_T *NextCommandMailbox =
Controller->V1.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
Controller->V1.PreviousCommandMailbox2 =
Controller->V1.PreviousCommandMailbox1;
Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
NextCommandMailbox = Controller->V1.FirstCommandMailbox;
Controller->V1.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
Controllers with Single Mode Firmware.
*/
static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandMailbox_T *NextCommandMailbox =
Controller->V1.NextCommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
Controller->V1.PreviousCommandMailbox2 =
Controller->V1.PreviousCommandMailbox1;
Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
NextCommandMailbox = Controller->V1.FirstCommandMailbox;
Controller->V1.NextCommandMailbox = NextCommandMailbox;
}
/*
DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
*/
static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
udelay(1);
DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
DAC960_PD_NewCommand(ControllerBaseAddress);
}
/*
DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
*/
static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
void __iomem *ControllerBaseAddress = Controller->BaseAddress;
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
switch (CommandMailbox->Common.CommandOpcode)
{
case DAC960_V1_Enquiry:
CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
break;
case DAC960_V1_GetDeviceState:
CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
break;
case DAC960_V1_Read:
CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
break;
case DAC960_V1_Write:
CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
break;
case DAC960_V1_ReadWithScatterGather:
CommandMailbox->Common.CommandOpcode =
DAC960_V1_ReadWithScatterGather_Old;
DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
break;
case DAC960_V1_WriteWithScatterGather:
CommandMailbox->Common.CommandOpcode =
DAC960_V1_WriteWithScatterGather_Old;
DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
break;
default:
break;
}
while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
udelay(1);
DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
DAC960_PD_NewCommand(ControllerBaseAddress);
}
/*
DAC960_ExecuteCommand executes Command and waits for completion.
*/
static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
{
DAC960_Controller_T *Controller = Command->Controller;
DECLARE_COMPLETION(Completion);
unsigned long flags;
Command->Completion = &Completion;
spin_lock_irqsave(&Controller->queue_lock, flags);
DAC960_QueueCommand(Command);
spin_unlock_irqrestore(&Controller->queue_lock, flags);
if (in_interrupt())
return;
wait_for_completion(&Completion);
}
/*
DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
Command and waits for completion. It returns true on success and false
on failure.
*/
static boolean DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
DAC960_V1_CommandOpcode_T CommandOpcode,
dma_addr_t DataDMA)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandStatus_T CommandStatus;
DAC960_V1_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->Type3.CommandOpcode = CommandOpcode;
CommandMailbox->Type3.BusAddress = DataDMA;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V1.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V1_NormalCompletion);
}
/*
DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
Command and waits for completion. It returns true on success and false
on failure.
*/
static boolean DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
DAC960_V1_CommandOpcode_T CommandOpcode,
unsigned char CommandOpcode2,
dma_addr_t DataDMA)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandStatus_T CommandStatus;
DAC960_V1_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
CommandMailbox->Type3B.BusAddress = DataDMA;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V1.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V1_NormalCompletion);
}
/*
DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
Command and waits for completion. It returns true on success and false
on failure.
*/
static boolean DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
DAC960_V1_CommandOpcode_T CommandOpcode,
unsigned char Channel,
unsigned char TargetID,
dma_addr_t DataDMA)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
DAC960_V1_CommandStatus_T CommandStatus;
DAC960_V1_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
CommandMailbox->Type3D.Channel = Channel;
CommandMailbox->Type3D.TargetID = TargetID;
CommandMailbox->Type3D.BusAddress = DataDMA;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V1.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V1_NormalCompletion);
}
/*
DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
Reading IOCTL Command and waits for completion. It returns true on success
and false on failure.
Return data in The controller's HealthStatusBuffer, which is dma-able memory
*/
static boolean DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandStatus_T CommandStatus;
DAC960_V2_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
CommandMailbox->Common.CommandControlBits
.DataTransferControllerToHost = true;
CommandMailbox->Common.CommandControlBits
.NoAutoRequestSense = true;
CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
CommandMailbox->Common.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentDataPointer =
Controller->V2.HealthStatusBufferDMA;
CommandMailbox->Common.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentByteCount =
CommandMailbox->Common.DataTransferSize;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V2.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V2_NormalCompletion);
}
/*
DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
Information Reading IOCTL Command and waits for completion. It returns
true on success and false on failure.
Data is returned in the controller's V2.NewControllerInformation dma-able
memory buffer.
*/
static boolean DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandStatus_T CommandStatus;
DAC960_V2_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
CommandMailbox->ControllerInfo.CommandControlBits
.DataTransferControllerToHost = true;
CommandMailbox->ControllerInfo.CommandControlBits
.NoAutoRequestSense = true;
CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
CommandMailbox->ControllerInfo.ControllerNumber = 0;
CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
CommandMailbox->ControllerInfo.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentDataPointer =
Controller->V2.NewControllerInformationDMA;
CommandMailbox->ControllerInfo.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentByteCount =
CommandMailbox->ControllerInfo.DataTransferSize;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V2.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V2_NormalCompletion);
}
/*
DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
Device Information Reading IOCTL Command and waits for completion. It
returns true on success and false on failure.
Data is returned in the controller's V2.NewLogicalDeviceInformation
*/
static boolean DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
unsigned short LogicalDeviceNumber)
{
DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
DAC960_V2_CommandStatus_T CommandStatus;
DAC960_V2_ClearCommand(Command);
Command->CommandType = DAC960_ImmediateCommand;
CommandMailbox->LogicalDeviceInfo.CommandOpcode =
DAC960_V2_IOCTL;
CommandMailbox->LogicalDeviceInfo.CommandControlBits
.DataTransferControllerToHost = true;
CommandMailbox->LogicalDeviceInfo.CommandControlBits
.NoAutoRequestSense = true;
CommandMailbox->LogicalDeviceInfo.DataTransferSize =
sizeof(DAC960_V2_LogicalDeviceInfo_T);
CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
LogicalDeviceNumber;
CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentDataPointer =
Controller->V2.NewLogicalDeviceInformationDMA;
CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
.ScatterGatherSegments[0]
.SegmentByteCount =
CommandMailbox->LogicalDeviceInfo.DataTransferSize;
DAC960_ExecuteCommand(Command);
CommandStatus = Command->V2.CommandStatus;
DAC960_DeallocateCommand(Command);
return (CommandStatus == DAC960_V2_NormalCompletion);
}
/*
DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
Physical Device Information" IOCTL Command and waits for completion. It
returns true on success and false on failure.
The Channel, TargetID, LogicalUnit arguments should be 0 the first time
this function is called for a given controller. This will return data
for the "first" device on that controller. The returned data includes a
Channel, TargetID, LogicalUnit that can be passed in to this routine to
get data for the NEXT device on that controller.
Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
memory buffer.
*/
static boolean DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,