aboutsummaryrefslogtreecommitdiff
path: root/drivers/message/fusion/mptfc.c
blob: b102c7666d0efcaf44f8a6e534ff340352b23489 (plain)
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
/*
 *  linux/drivers/message/fusion/mptfc.c
 *      For use with LSI Logic PCI chip/adapter(s)
 *      running LSI Logic Fusion MPT (Message Passing Technology) firmware.
 *
 *  Copyright (c) 1999-2005 LSI Logic Corporation
 *  (mailto:mpt_linux_developer@lsil.com)
 *
 */
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; version 2 of the License.

    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 more details.

    NO WARRANTY
    THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
    CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
    LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
    solely responsible for determining the appropriateness of using and
    distributing the Program and assumes all risks associated with its
    exercise of rights under this Agreement, including but not limited to
    the risks and costs of program errors, damage to or loss of data,
    programs or equipment, and unavailability or interruption of operations.

    DISCLAIMER OF LIABILITY
    NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), 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 OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
    HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#include "linux_compat.h"	/* linux-2.6 tweaks */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/kdev_t.h>
#include <linux/blkdev.h>
#include <linux/delay.h>	/* for mdelay */
#include <linux/interrupt.h>	/* needed for in_interrupt() proto */
#include <linux/reboot.h>	/* notifier code */
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/sort.h>

#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi_transport_fc.h>

#include "mptbase.h"
#include "mptscsih.h"

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
#define my_NAME		"Fusion MPT FC Host driver"
#define my_VERSION	MPT_LINUX_VERSION_COMMON
#define MYNAM		"mptfc"

MODULE_AUTHOR(MODULEAUTHOR);
MODULE_DESCRIPTION(my_NAME);
MODULE_LICENSE("GPL");

/* Command line args */
static int mpt_pq_filter = 0;
module_param(mpt_pq_filter, int, 0);
MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1  (default=0)");

#define MPTFC_DEV_LOSS_TMO (60)
static int mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;	/* reasonable default */
module_param(mptfc_dev_loss_tmo, int, 0);
MODULE_PARM_DESC(mptfc_dev_loss_tmo, " Initial time the driver programs the "
    				     " transport to wait for an rport to "
				     " return following a device loss event."
				     "  Default=60.");

static int	mptfcDoneCtx = -1;
static int	mptfcTaskCtx = -1;
static int	mptfcInternalCtx = -1; /* Used only for internal commands */

int mptfc_slave_alloc(struct scsi_device *device);
static int mptfc_qcmd(struct scsi_cmnd *SCpnt,
    void (*done)(struct scsi_cmnd *));

static void mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout);
static void __devexit mptfc_remove(struct pci_dev *pdev);

static struct scsi_host_template mptfc_driver_template = {
	.module				= THIS_MODULE,
	.proc_name			= "mptfc",
	.proc_info			= mptscsih_proc_info,
	.name				= "MPT FC Host",
	.info				= mptscsih_info,
	.queuecommand			= mptfc_qcmd,
	.target_alloc			= mptscsih_target_alloc,
	.slave_alloc			= mptfc_slave_alloc,
	.slave_configure		= mptscsih_slave_configure,
	.target_destroy			= mptscsih_target_destroy,
	.slave_destroy			= mptscsih_slave_destroy,
	.change_queue_depth 		= mptscsih_change_queue_depth,
	.eh_abort_handler		= mptscsih_abort,
	.eh_device_reset_handler	= mptscsih_dev_reset,
	.eh_bus_reset_handler		= mptscsih_bus_reset,
	.eh_host_reset_handler		= mptscsih_host_reset,
	.bios_param			= mptscsih_bios_param,
	.can_queue			= MPT_FC_CAN_QUEUE,
	.this_id			= -1,
	.sg_tablesize			= MPT_SCSI_SG_DEPTH,
	.max_sectors			= 8192,
	.cmd_per_lun			= 7,
	.use_clustering			= ENABLE_CLUSTERING,
};

/****************************************************************************
 * Supported hardware
 */

static struct pci_device_id mptfc_pci_table[] = {
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
		PCI_ANY_ID, PCI_ANY_ID },
	{ PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949ES,
		PCI_ANY_ID, PCI_ANY_ID },
	{0}	/* Terminating entry */
};
MODULE_DEVICE_TABLE(pci, mptfc_pci_table);

static struct scsi_transport_template *mptfc_transport_template = NULL;

struct fc_function_template mptfc_transport_functions = {
	.dd_fcrport_size = 8,
	.show_host_node_name = 1,
	.show_host_port_name = 1,
	.show_host_supported_classes = 1,
	.show_host_port_id = 1,
	.show_rport_supported_classes = 1,
	.show_starget_node_name = 1,
	.show_starget_port_name = 1,
	.show_starget_port_id = 1,
	.set_rport_dev_loss_tmo = mptfc_set_rport_loss_tmo,
	.show_rport_dev_loss_tmo = 1,

};

/* FIXME! values controlling firmware RESCAN event
 * need to be set low to allow dev_loss_tmo to
 * work as expected.  Currently, firmware doesn't
 * notify driver of RESCAN event until some number
 * of seconds elapse.  This value can be set via
 * lsiutil.
 */
static void
mptfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
{
	if (timeout > 0)
		rport->dev_loss_tmo = timeout;
	else
		rport->dev_loss_tmo = mptfc_dev_loss_tmo;
}

static int
mptfc_FcDevPage0_cmp_func(const void *a, const void *b)
{
	FCDevicePage0_t **aa = (FCDevicePage0_t **)a;
	FCDevicePage0_t **bb = (FCDevicePage0_t **)b;

	if ((*aa)->CurrentBus == (*bb)->CurrentBus) {
		if ((*aa)->CurrentTargetID == (*bb)->CurrentTargetID)
			return 0;
		if ((*aa)->CurrentTargetID < (*bb)->CurrentTargetID)
			return -1;
		return 1;
	}
	if ((*aa)->CurrentBus < (*bb)->CurrentBus)
		return -1;
	return 1;
}

static int
mptfc_GetFcDevPage0(MPT_ADAPTER *ioc, int ioc_port,
	void(*func)(MPT_ADAPTER *ioc,int channel, FCDevicePage0_t *arg))
{
	ConfigPageHeader_t	 hdr;
	CONFIGPARMS		 cfg;
	FCDevicePage0_t		*ppage0_alloc, *fc;
	dma_addr_t		 page0_dma;
	int			 data_sz;
	int			 ii;

	FCDevicePage0_t		*p0_array=NULL, *p_p0;
	FCDevicePage0_t		**pp0_array=NULL, **p_pp0;

	int			 rc = -ENOMEM;
	U32			 port_id = 0xffffff;
	int			 num_targ = 0;
	int			 max_bus = ioc->facts.MaxBuses;
	int			 max_targ = ioc->facts.MaxDevices;

	if (max_bus == 0 || max_targ == 0)
		goto out;

	data_sz = sizeof(FCDevicePage0_t) * max_bus * max_targ;
	p_p0 = p0_array =  kzalloc(data_sz, GFP_KERNEL);
	if (!p0_array)
		goto out;

	data_sz = sizeof(FCDevicePage0_t *) * max_bus * max_targ;
	p_pp0 = pp0_array = kzalloc(data_sz, GFP_KERNEL);
	if (!pp0_array)
		goto out;

	do {
		/* Get FC Device Page 0 header */
		hdr.PageVersion = 0;
		hdr.PageLength = 0;
		hdr.PageNumber = 0;
		hdr.PageType = MPI_CONFIG_PAGETYPE_FC_DEVICE;
		cfg.cfghdr.hdr = &hdr;
		cfg.physAddr = -1;
		cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
		cfg.dir = 0;
		cfg.pageAddr = port_id;
		cfg.timeout = 0;

		if ((rc = mpt_config(ioc, &cfg)) != 0)
			break;

		if (hdr.PageLength <= 0)
			break;

		data_sz = hdr.PageLength * 4;
		ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz,
		    					&page0_dma);
		rc = -ENOMEM;
		if (!ppage0_alloc)
			break;

		cfg.physAddr = page0_dma;
		cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

		if ((rc = mpt_config(ioc, &cfg)) == 0) {
			ppage0_alloc->PortIdentifier =
				le32_to_cpu(ppage0_alloc->PortIdentifier);

			ppage0_alloc->WWNN.Low =
				le32_to_cpu(ppage0_alloc->WWNN.Low);

			ppage0_alloc->WWNN.High =
				le32_to_cpu(ppage0_alloc->WWNN.High);

			ppage0_alloc->WWPN.Low =
				le32_to_cpu(ppage0_alloc->WWPN.Low);

			ppage0_alloc->WWPN.High =
				le32_to_cpu(ppage0_alloc->WWPN.High);

			ppage0_alloc->BBCredit =
				le16_to_cpu(ppage0_alloc->BBCredit);

			ppage0_alloc->MaxRxFrameSize =
				le16_to_cpu(ppage0_alloc->MaxRxFrameSize);

			port_id = ppage0_alloc->PortIdentifier;
			num_targ++;
			*p_p0 = *ppage0_alloc;	/* save data */
			*p_pp0++ = p_p0++;	/* save addr */
		}
		pci_free_consistent(ioc->pcidev, data_sz,
		    			(u8 *) ppage0_alloc, page0_dma);
		if (rc != 0)
			break;

	} while (port_id <= 0xff0000);

	if (num_targ) {
		/* sort array */
		if (num_targ > 1)
			sort (pp0_array, num_targ, sizeof(FCDevicePage0_t *),
				mptfc_FcDevPage0_cmp_func, NULL);
		/* call caller's func for each targ */
		for (ii = 0; ii < num_targ;  ii++) {
			fc = *(pp0_array+ii);
			func(ioc, ioc_port, fc);
		}
	}

 out:
	if (pp0_array)
		kfree(pp0_array);
	if (p0_array)
		kfree(p0_array);
	return rc;
}

static int
mptfc_generate_rport_ids(FCDevicePage0_t *pg0, struct fc_rport_identifiers *rid)
{
	/* not currently usable */
	if (pg0->Flags & (MPI_FC_DEVICE_PAGE0_FLAGS_PLOGI_INVALID |
			  MPI_FC_DEVICE_PAGE0_FLAGS_PRLI_INVALID))
		return -1;

	if (!(pg0->Flags & MPI_FC_DEVICE_PAGE0_FLAGS_TARGETID_BUS_VALID))
		return -1;

	if (!(pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_TARGET))
		return -1;

	/*
	 * board data structure already normalized to platform endianness
	 * shifted to avoid unaligned access on 64 bit architecture
	 */
	rid->node_name = ((u64)pg0->WWNN.High) << 32 | (u64)pg0->WWNN.Low;
	rid->port_name = ((u64)pg0->WWPN.High) << 32 | (u64)pg0->WWPN.Low;
	rid->port_id =   pg0->PortIdentifier;
	rid->roles = FC_RPORT_ROLE_UNKNOWN;
	rid->roles |= FC_RPORT_ROLE_FCP_TARGET;
	if (pg0->Protocol & MPI_FC_DEVICE_PAGE0_PROT_FCP_INITIATOR)
		rid->roles |= FC_RPORT_ROLE_FCP_INITIATOR;

	return 0;
}

static void
mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
{
	struct fc_rport_identifiers rport_ids;
	struct fc_rport		*rport;
	struct mptfc_rport_info	*ri;
	int			match = 0;
	u64			port_name;
	unsigned long		flags;

	if (mptfc_generate_rport_ids(pg0, &rport_ids) < 0)
		return;

	/* scan list looking for a match */
	spin_lock_irqsave(&ioc->fc_rport_lock, flags);
	list_for_each_entry(ri, &ioc->fc_rports, list) {
		port_name = (u64)ri->pg0.WWPN.High << 32 | (u64)ri->pg0.WWPN.Low;
		if (port_name == rport_ids.port_name) {	/* match */
			list_move_tail(&ri->list, &ioc->fc_rports);
			match = 1;
			break;
		}
	}
	if (!match) {	/* allocate one */
		spin_unlock_irqrestore(&ioc->fc_rport_lock, flags);
		ri = kzalloc(sizeof(struct mptfc_rport_info), GFP_KERNEL);
		if (!ri)
			return;
		spin_lock_irqsave(&ioc->fc_rport_lock, flags);
		list_add_tail(&ri->list, &ioc->fc_rports);
	}

	ri->pg0 = *pg0;	/* add/update pg0 data */
	ri->flags &= ~MPT_RPORT_INFO_FLAGS_MISSING;

	if (!(ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED)) {
		ri->flags |= MPT_RPORT_INFO_FLAGS_REGISTERED;
		spin_unlock_irqrestore(&ioc->fc_rport_lock, flags);
		rport = fc_remote_port_add(ioc->sh,channel, &rport_ids);
		spin_lock_irqsave(&ioc->fc_rport_lock, flags);
		if (rport) {
			if (*((struct mptfc_rport_info **)rport->dd_data) != ri) {
				ri->flags &= ~MPT_RPORT_INFO_FLAGS_MAPPED_VDEV;
				ri->vdev = NULL;
				ri->rport = rport;
				*((struct mptfc_rport_info **)rport->dd_data) = ri;
			}
			rport->dev_loss_tmo = mptfc_dev_loss_tmo;
			/*
			 * if already mapped, remap here.  If not mapped,
			 * slave_alloc will allocate vdev and map
			 */
			if (ri->flags & MPT_RPORT_INFO_FLAGS_MAPPED_VDEV) {
				ri->vdev->target_id = ri->pg0.CurrentTargetID;
				ri->vdev->bus_id = ri->pg0.CurrentBus;
				ri->vdev->vtarget->target_id = ri->vdev->target_id;
				ri->vdev->vtarget->bus_id = ri->vdev->bus_id;
			}
			#ifdef MPT_DEBUG
			printk ("mptfc_reg_dev.%d: %x, %llx / %llx, tid %d, "
				"rport tid %d, tmo %d\n",
					ioc->sh->host_no,
					pg0->PortIdentifier,
					pg0->WWNN,
					pg0->WWPN,
					pg0->CurrentTargetID,
					ri->rport->scsi_target_id,
					ri->rport->dev_loss_tmo);
			#endif
		} else {
			list_del(&ri->list);
			kfree(ri);
			ri = NULL;
		}
	}
	spin_unlock_irqrestore(&ioc->fc_rport_lock,flags);

}

/*
 *	OS entry point to allow host driver to alloc memory
 *	for each scsi device. Called once per device the bus scan.
 *	Return non-zero if allocation fails.
 *	Init memory once per LUN.
 */
int
mptfc_slave_alloc(struct scsi_device *sdev)
{
	MPT_SCSI_HOST		*hd;
	VirtTarget		*vtarget;
	VirtDevice		*vdev;
	struct scsi_target	*starget;
	struct fc_rport		*rport;
	struct mptfc_rport_info *ri;
	unsigned long		flags;


	rport = starget_to_rport(scsi_target(sdev));

	if (!rport || fc_remote_port_chkready(rport))
		return -ENXIO;

	hd = (MPT_SCSI_HOST *)sdev->host->hostdata;

	vdev = kmalloc(sizeof(VirtDevice), GFP_KERNEL);
	if (!vdev) {
		printk(MYIOC_s_ERR_FMT "slave_alloc kmalloc(%zd) FAILED!\n",
				hd->ioc->name, sizeof(VirtDevice));
		return -ENOMEM;
	}
	memset(vdev, 0, sizeof(VirtDevice));

	spin_lock_irqsave(&hd->ioc->fc_rport_lock,flags);

	if (!(ri = *((struct mptfc_rport_info **)rport->dd_data))) {
		spin_unlock_irqrestore(&hd->ioc->fc_rport_lock,flags);
		kfree(vdev);
		return -ENODEV;
	}

	sdev->hostdata = vdev;
	starget = scsi_target(sdev);
	vtarget = starget->hostdata;
	if (vtarget->num_luns == 0) {
		vtarget->tflags = MPT_TARGET_FLAGS_Q_YES |
		    		  MPT_TARGET_FLAGS_VALID_INQUIRY;
		hd->Targets[sdev->id] = vtarget;
	}

	vtarget->target_id = vdev->target_id;
	vtarget->bus_id = vdev->bus_id;

	vdev->vtarget = vtarget;
	vdev->ioc_id = hd->ioc->id;
	vdev->lun = sdev->lun;
	vdev->target_id = ri->pg0.CurrentTargetID;
	vdev->bus_id = ri->pg0.CurrentBus;

	ri->flags |= MPT_RPORT_INFO_FLAGS_MAPPED_VDEV;
	ri->vdev = vdev;

	spin_unlock_irqrestore(&hd->ioc->fc_rport_lock,flags);

	vtarget->num_luns++;

#ifdef MPT_DEBUG
	printk ("mptfc_slv_alloc.%d: num_luns %d, sdev.id %d, "
	        "CurrentTargetID %d, %x %llx %llx\n",
			sdev->host->host_no,
			vtarget->num_luns,
			sdev->id, ri->pg0.CurrentTargetID,
			ri->pg0.PortIdentifier, ri->pg0.WWPN, ri->pg0.WWNN);
#endif

	return 0;
}

static int
mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
{
	struct fc_rport	*rport = starget_to_rport(scsi_target(SCpnt->device));
	int		err;

	err = fc_remote_port_chkready(rport);
	if (unlikely(err)) {
		SCpnt->result = err;
		done(SCpnt);
		return 0;
	}
	return mptscsih_qcmd(SCpnt,done);
}

static void
mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
{
	unsigned class = 0, cos = 0;

	/* don't know what to do as only one scsi (fc) host was allocated */
	if (portnum != 0)
		return;

	class = ioc->fc_port_page0[portnum].SupportedServiceClass;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_1)
		cos |= FC_COS_CLASS1;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_2)
		cos |= FC_COS_CLASS2;
	if (class & MPI_FCPORTPAGE0_SUPPORT_CLASS_3)
		cos |= FC_COS_CLASS3;

	fc_host_node_name(ioc->sh) =
	    	(u64)ioc->fc_port_page0[portnum].WWNN.High << 32
		    | (u64)ioc->fc_port_page0[portnum].WWNN.Low;

	fc_host_port_name(ioc->sh) =
	    	(u64)ioc->fc_port_page0[portnum].WWPN.High << 32
		    | (u64)ioc->fc_port_page0[portnum].WWPN.Low;

	fc_host_port_id(ioc->sh) = ioc->fc_port_page0[portnum].PortIdentifier;

	fc_host_supported_classes(ioc->sh) = cos;

	fc_host_tgtid_bind_type(ioc->sh) = FC_TGTID_BIND_BY_WWPN;
}

static void
mptfc_rescan_devices(void *arg)
{
	MPT_ADAPTER		*ioc = (MPT_ADAPTER *)arg;
	int			ii;
	int			work_to_do;
	unsigned long		flags;
	struct mptfc_rport_info *ri;

	do {
		/* start by tagging all ports as missing */
		spin_lock_irqsave(&ioc->fc_rport_lock,flags);
		list_for_each_entry(ri, &ioc->fc_rports, list) {
			if (ri->flags & MPT_RPORT_INFO_FLAGS_REGISTERED) {
				ri->flags |= MPT_RPORT_INFO_FLAGS_MISSING;
			}
		}
		spin_unlock_irqrestore(&ioc->fc_rport_lock,flags);

		/*
		 * now rescan devices known to adapter,
		 * will reregister existing rports
		 */
		for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
			(void) mptbase_GetFcPortPage0(ioc, ii);
			mptfc_init_host_attr(ioc,ii);	/* refresh */
			mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
		}

		/* delete devices still missing */
		spin_lock_irqsave(&ioc->fc_rport_lock, flags);
		list_for_each_entry(ri, &ioc->fc_rports, list) {
			/* if newly missing, delete it */
			if ((ri->flags & (MPT_RPORT_INFO_FLAGS_REGISTERED |
					  MPT_RPORT_INFO_FLAGS_MISSING))
			  == (MPT_RPORT_INFO_FLAGS_REGISTERED |
			      MPT_RPORT_INFO_FLAGS_MISSING)) {

				ri->flags &= ~(MPT_RPORT_INFO_FLAGS_REGISTERED|
					       MPT_RPORT_INFO_FLAGS_MISSING);
				fc_remote_port_delete(ri->rport);
				/*
				 * remote port not really deleted 'cause
				 * binding is by WWPN and driver only
				 * registers FCP_TARGETs
				 */
				#ifdef MPT_DEBUG
				printk ("mptfc_rescan.%d: %llx deleted\n",
					ioc->sh->host_no, ri->pg0.WWPN);
				#endif
			}
		}
		spin_unlock_irqrestore(&ioc->fc_rport_lock,flags);

		/*
		 * allow multiple passes as target state
		 * might have changed during scan
		 */
		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
		if (ioc->fc_rescan_work_count > 2) 	/* only need one more */
			ioc->fc_rescan_work_count = 2;
		work_to_do = --ioc->fc_rescan_work_count;
		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
	} while (work_to_do);
}

static int
mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
	struct Scsi_Host	*sh;
	MPT_SCSI_HOST		*hd;
	MPT_ADAPTER 		*ioc;
	unsigned long		 flags;
	int			 ii;
	int			 numSGE = 0;
	int			 scale;
	int			 ioc_cap;
	int			error=0;
	int			r;

	if ((r = mpt_attach(pdev,id)) != 0)
		return r;

	ioc = pci_get_drvdata(pdev);
	ioc->DoneCtx = mptfcDoneCtx;
	ioc->TaskCtx = mptfcTaskCtx;
	ioc->InternalCtx = mptfcInternalCtx;

	/*  Added sanity check on readiness of the MPT adapter.
	 */
	if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
		printk(MYIOC_s_WARN_FMT
		  "Skipping because it's not operational!\n",
		  ioc->name);
		error = -ENODEV;
		goto out_mptfc_probe;
	}

	if (!ioc->active) {
		printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
		  ioc->name);
		error = -ENODEV;
		goto out_mptfc_probe;
	}

	/*  Sanity check - ensure at least 1 port is INITIATOR capable
	 */
	ioc_cap = 0;
	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		if (ioc->pfacts[ii].ProtocolFlags &
		    MPI_PORTFACTS_PROTOCOL_INITIATOR)
			ioc_cap ++;
	}

	if (!ioc_cap) {
		printk(MYIOC_s_WARN_FMT
			"Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
			ioc->name, ioc);
		return -ENODEV;
	}

	sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));

	if (!sh) {
		printk(MYIOC_s_WARN_FMT
			"Unable to register controller with SCSI subsystem\n",
			ioc->name);
		error = -1;
		goto out_mptfc_probe;
        }

	INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);

	spin_lock_irqsave(&ioc->FreeQlock, flags);

	/* Attach the SCSI Host to the IOC structure
	 */
	ioc->sh = sh;

	sh->io_port = 0;
	sh->n_io_port = 0;
	sh->irq = 0;

	/* set 16 byte cdb's */
	sh->max_cmd_len = 16;

	sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;

	sh->max_lun = MPT_LAST_LUN + 1;
	sh->max_channel = 0;
	sh->this_id = ioc->pfacts[0].PortSCSIID;

	/* Required entry.
	 */
	sh->unique_id = ioc->id;

	/* Verify that we won't exceed the maximum
	 * number of chain buffers
	 * We can optimize:  ZZ = req_sz/sizeof(SGE)
	 * For 32bit SGE's:
	 *  numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
	 *               + (req_sz - 64)/sizeof(SGE)
	 * A slightly different algorithm is required for
	 * 64bit SGEs.
	 */
	scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
	if (sizeof(dma_addr_t) == sizeof(u64)) {
		numSGE = (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
		  sizeof(u32));
	} else {
		numSGE = 1 + (scale - 1) *
		  (ioc->facts.MaxChainDepth-1) + scale +
		  (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
		  sizeof(u32));
	}

	if (numSGE < sh->sg_tablesize) {
		/* Reset this value */
		dprintk((MYIOC_s_INFO_FMT
		  "Resetting sg_tablesize to %d from %d\n",
		  ioc->name, numSGE, sh->sg_tablesize));
		sh->sg_tablesize = numSGE;
	}

	spin_unlock_irqrestore(&ioc->FreeQlock, flags);

	hd = (MPT_SCSI_HOST *) sh->hostdata;
	hd->ioc = ioc;

	/* SCSI needs scsi_cmnd lookup table!
	 * (with size equal to req_depth*PtrSz!)
	 */
	hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
	if (!hd->ScsiLookup) {
		error = -ENOMEM;
		goto out_mptfc_probe;
	}

	dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
		 ioc->name, hd->ScsiLookup));

	/* Allocate memory for the device structures.
	 * A non-Null pointer at an offset
	 * indicates a device exists.
	 * max_id = 1 + maximum id (hosts.h)
	 */
	hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
	if (!hd->Targets) {
		error = -ENOMEM;
		goto out_mptfc_probe;
	}

	dprintk((KERN_INFO "  vdev @ %p\n", hd->Targets));

	/* Clear the TM flags
	 */
	hd->tmPending = 0;
	hd->tmState = TM_STATE_NONE;
	hd->resetPending = 0;
	hd->abortSCpnt = NULL;

	/* Clear the pointer used to store
	 * single-threaded commands, i.e., those
	 * issued during a bus scan, dv and
	 * configuration pages.
	 */
	hd->cmdPtr = NULL;

	/* Initialize this SCSI Hosts' timers
	 * To use, set the timer expires field
	 * and add_timer
	 */
	init_timer(&hd->timer);
	hd->timer.data = (unsigned long) hd;
	hd->timer.function = mptscsih_timer_expired;

	hd->mpt_pq_filter = mpt_pq_filter;

	ddvprintk((MYIOC_s_INFO_FMT
		"mpt_pq_filter %x\n",
		ioc->name, 
		mpt_pq_filter));

	init_waitqueue_head(&hd->scandv_waitq);
	hd->scandv_wait_done = 0;
	hd->last_queue_full = 0;

	sh->transportt = mptfc_transport_template;
	error = scsi_add_host (sh, &ioc->pcidev->dev);
	if(error) {
		dprintk((KERN_ERR MYNAM
		  "scsi_add_host failed\n"));
		goto out_mptfc_probe;
	}

	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
		mptfc_init_host_attr(ioc,ii);
		mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
	}

	return 0;

out_mptfc_probe:

	mptscsih_remove(pdev);
	return error;
}

static struct pci_driver mptfc_driver = {
	.name		= "mptfc",
	.id_table	= mptfc_pci_table,
	.probe		= mptfc_probe,
	.remove		= __devexit_p(mptfc_remove),
	.shutdown	= mptscsih_shutdown,
#ifdef CONFIG_PM
	.suspend	= mptscsih_suspend,
	.resume		= mptscsih_resume,
#endif
};

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_init - Register MPT adapter(s) as SCSI host(s) with
 *	linux scsi mid-layer.
 *
 *	Returns 0 for success, non-zero for failure.
 */
static int __init
mptfc_init(void)
{
	int error;

	show_mptmod_ver(my_NAME, my_VERSION);

	/* sanity check module parameter */
	if (mptfc_dev_loss_tmo == 0)
		mptfc_dev_loss_tmo = MPTFC_DEV_LOSS_TMO;

	mptfc_transport_template =
		fc_attach_transport(&mptfc_transport_functions);

	if (!mptfc_transport_template)
		return -ENODEV;

	mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
	mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
	mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);

	if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
		devtprintk((KERN_INFO MYNAM
		  ": Registered for IOC event notifications\n"));
	}

	if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
		dprintk((KERN_INFO MYNAM
		  ": Registered for IOC reset notifications\n"));
	}

	error = pci_register_driver(&mptfc_driver);
	if (error) {
		fc_release_transport(mptfc_transport_template);
	}

	return error;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_remove - Removed fc infrastructure for devices
 *	@pdev: Pointer to pci_dev structure
 *
 */
static void __devexit mptfc_remove(struct pci_dev *pdev)
{
	MPT_ADAPTER *ioc = pci_get_drvdata(pdev);
	struct mptfc_rport_info *p, *n;

	fc_remove_host(ioc->sh);

	list_for_each_entry_safe(p, n, &ioc->fc_rports, list) {
		list_del(&p->list);
		kfree(p);
	}

	mptscsih_remove(pdev);
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptfc_exit - Unregisters MPT adapter(s)
 *
 */
static void __exit
mptfc_exit(void)
{
	pci_unregister_driver(&mptfc_driver);
	fc_release_transport(mptfc_transport_template);

	mpt_reset_deregister(mptfcDoneCtx);
	dprintk((KERN_INFO MYNAM
	  ": Deregistered for IOC reset notifications\n"));

	mpt_event_deregister(mptfcDoneCtx);
	dprintk((KERN_INFO MYNAM
	  ": Deregistered for IOC event notifications\n"));

	mpt_deregister(mptfcInternalCtx);
	mpt_deregister(mptfcTaskCtx);
	mpt_deregister(mptfcDoneCtx);
}

module_init(mptfc_init);
module_exit(mptfc_exit);