summaryrefslogtreecommitdiff
path: root/drivers/scsi/mvsas/mv_init.c
blob: 74550922ad55e418eb7e37753e0983023728943b (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
/*
 * Marvell 88SE64xx/88SE94xx pci init
 *
 * Copyright 2007 Red Hat, Inc.
 * Copyright 2008 Marvell. <kewei@marvell.com>
 * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
 *
 * This file is licensed under GPLv2.
 *
 * 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.
 *
 * 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 "mv_sas.h"

static int lldd_max_execute_num = 1;
module_param_named(collector, lldd_max_execute_num, int, S_IRUGO);
MODULE_PARM_DESC(collector, "\n"
	"\tIf greater than one, tells the SAS Layer to run in Task Collector\n"
	"\tMode.  If 1 or 0, tells the SAS Layer to run in Direct Mode.\n"
	"\tThe mvsas SAS LLDD supports both modes.\n"
	"\tDefault: 1 (Direct Mode).\n");

int interrupt_coalescing = 0x80;

static struct scsi_transport_template *mvs_stt;
struct kmem_cache *mvs_task_list_cache;
static const struct mvs_chip_info mvs_chips[] = {
	[chip_6320] =	{ 1, 2, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
	[chip_6440] =	{ 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
	[chip_6485] =	{ 1, 8, 0x800, 33, 32, 6, 10, &mvs_64xx_dispatch, },
	[chip_9180] =	{ 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
	[chip_9480] =	{ 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
	[chip_9445] =	{ 1, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
	[chip_9485] =	{ 2, 4, 0x800, 17, 64, 8, 11, &mvs_94xx_dispatch, },
	[chip_1300] =	{ 1, 4, 0x400, 17, 16, 6,  9, &mvs_64xx_dispatch, },
	[chip_1320] =	{ 2, 4, 0x800, 17, 64, 8,  9, &mvs_94xx_dispatch, },
};

struct device_attribute *mvst_host_attrs[];

#define SOC_SAS_NUM 2

static struct scsi_host_template mvs_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.queuecommand		= sas_queuecommand,
	.target_alloc		= sas_target_alloc,
	.slave_configure	= sas_slave_configure,
	.scan_finished		= mvs_scan_finished,
	.scan_start		= mvs_scan_start,
	.change_queue_depth	= sas_change_queue_depth,
	.change_queue_type	= sas_change_queue_type,
	.bios_param		= sas_bios_param,
	.can_queue		= 1,
	.cmd_per_lun		= 1,
	.this_id		= -1,
	.sg_tablesize		= SG_ALL,
	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
	.use_clustering		= ENABLE_CLUSTERING,
	.eh_device_reset_handler = sas_eh_device_reset_handler,
	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
	.target_destroy		= sas_target_destroy,
	.ioctl			= sas_ioctl,
	.shost_attrs		= mvst_host_attrs,
};

static struct sas_domain_function_template mvs_transport_ops = {
	.lldd_dev_found 	= mvs_dev_found,
	.lldd_dev_gone		= mvs_dev_gone,
	.lldd_execute_task	= mvs_queue_command,
	.lldd_control_phy	= mvs_phy_control,

	.lldd_abort_task	= mvs_abort_task,
	.lldd_abort_task_set    = mvs_abort_task_set,
	.lldd_clear_aca         = mvs_clear_aca,
	.lldd_clear_task_set    = mvs_clear_task_set,
	.lldd_I_T_nexus_reset	= mvs_I_T_nexus_reset,
	.lldd_lu_reset 		= mvs_lu_reset,
	.lldd_query_task	= mvs_query_task,
	.lldd_port_formed	= mvs_port_formed,
	.lldd_port_deformed     = mvs_port_deformed,

};

static void mvs_phy_init(struct mvs_info *mvi, int phy_id)
{
	struct mvs_phy *phy = &mvi->phy[phy_id];
	struct asd_sas_phy *sas_phy = &phy->sas_phy;

	phy->mvi = mvi;
	phy->port = NULL;
	init_timer(&phy->timer);
	sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
	sas_phy->class = SAS;
	sas_phy->iproto = SAS_PROTOCOL_ALL;
	sas_phy->tproto = 0;
	sas_phy->type = PHY_TYPE_PHYSICAL;
	sas_phy->role = PHY_ROLE_INITIATOR;
	sas_phy->oob_mode = OOB_NOT_CONNECTED;
	sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;

	sas_phy->id = phy_id;
	sas_phy->sas_addr = &mvi->sas_addr[0];
	sas_phy->frame_rcvd = &phy->frame_rcvd[0];
	sas_phy->ha = (struct sas_ha_struct *)mvi->shost->hostdata;
	sas_phy->lldd_phy = phy;
}

static void mvs_free(struct mvs_info *mvi)
{
	struct mvs_wq *mwq;
	int slot_nr;

	if (!mvi)
		return;

	if (mvi->flags & MVF_FLAG_SOC)
		slot_nr = MVS_SOC_SLOTS;
	else
		slot_nr = MVS_CHIP_SLOT_SZ;

	if (mvi->dma_pool)
		pci_pool_destroy(mvi->dma_pool);

	if (mvi->tx)
		dma_free_coherent(mvi->dev,
				  sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
				  mvi->tx, mvi->tx_dma);
	if (mvi->rx_fis)
		dma_free_coherent(mvi->dev, MVS_RX_FISL_SZ,
				  mvi->rx_fis, mvi->rx_fis_dma);
	if (mvi->rx)
		dma_free_coherent(mvi->dev,
				  sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
				  mvi->rx, mvi->rx_dma);
	if (mvi->slot)
		dma_free_coherent(mvi->dev,
				  sizeof(*mvi->slot) * slot_nr,
				  mvi->slot, mvi->slot_dma);

	if (mvi->bulk_buffer)
		dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
				  mvi->bulk_buffer, mvi->bulk_buffer_dma);
	if (mvi->bulk_buffer1)
		dma_free_coherent(mvi->dev, TRASH_BUCKET_SIZE,
				  mvi->bulk_buffer1, mvi->bulk_buffer_dma1);

	MVS_CHIP_DISP->chip_iounmap(mvi);
	if (mvi->shost)
		scsi_host_put(mvi->shost);
	list_for_each_entry(mwq, &mvi->wq_list, entry)
		cancel_delayed_work(&mwq->work_q);
	kfree(mvi->tags);
	kfree(mvi);
}

#ifdef CONFIG_SCSI_MVSAS_TASKLET
static void mvs_tasklet(unsigned long opaque)
{
	u32 stat;
	u16 core_nr, i = 0;

	struct mvs_info *mvi;
	struct sas_ha_struct *sha = (struct sas_ha_struct *)opaque;

	core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
	mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];

	if (unlikely(!mvi))
		BUG_ON(1);

	stat = MVS_CHIP_DISP->isr_status(mvi, mvi->pdev->irq);
	if (!stat)
		goto out;

	for (i = 0; i < core_nr; i++) {
		mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
		MVS_CHIP_DISP->isr(mvi, mvi->pdev->irq, stat);
	}
out:
	MVS_CHIP_DISP->interrupt_enable(mvi);

}
#endif

static irqreturn_t mvs_interrupt(int irq, void *opaque)
{
	u32 core_nr;
	u32 stat;
	struct mvs_info *mvi;
	struct sas_ha_struct *sha = opaque;
#ifndef CONFIG_SCSI_MVSAS_TASKLET
	u32 i;
#endif

	core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
	mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];

	if (unlikely(!mvi))
		return IRQ_NONE;
#ifdef CONFIG_SCSI_MVSAS_TASKLET
	MVS_CHIP_DISP->interrupt_disable(mvi);
#endif

	stat = MVS_CHIP_DISP->isr_status(mvi, irq);
	if (!stat) {
	#ifdef CONFIG_SCSI_MVSAS_TASKLET
		MVS_CHIP_DISP->interrupt_enable(mvi);
	#endif
		return IRQ_NONE;
	}

#ifdef CONFIG_SCSI_MVSAS_TASKLET
	tasklet_schedule(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
#else
	for (i = 0; i < core_nr; i++) {
		mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
		MVS_CHIP_DISP->isr(mvi, irq, stat);
	}
#endif
	return IRQ_HANDLED;
}

static int mvs_alloc(struct mvs_info *mvi, struct Scsi_Host *shost)
{
	int i = 0, slot_nr;
	char pool_name[32];

	if (mvi->flags & MVF_FLAG_SOC)
		slot_nr = MVS_SOC_SLOTS;
	else
		slot_nr = MVS_CHIP_SLOT_SZ;

	spin_lock_init(&mvi->lock);
	for (i = 0; i < mvi->chip->n_phy; i++) {
		mvs_phy_init(mvi, i);
		mvi->port[i].wide_port_phymap = 0;
		mvi->port[i].port_attached = 0;
		INIT_LIST_HEAD(&mvi->port[i].list);
	}
	for (i = 0; i < MVS_MAX_DEVICES; i++) {
		mvi->devices[i].taskfileset = MVS_ID_NOT_MAPPED;
		mvi->devices[i].dev_type = NO_DEVICE;
		mvi->devices[i].device_id = i;
		mvi->devices[i].dev_status = MVS_DEV_NORMAL;
		init_timer(&mvi->devices[i].timer);
	}

	/*
	 * alloc and init our DMA areas
	 */
	mvi->tx = dma_alloc_coherent(mvi->dev,
				     sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
				     &mvi->tx_dma, GFP_KERNEL);
	if (!mvi->tx)
		goto err_out;
	memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
	mvi->rx_fis = dma_alloc_coherent(mvi->dev, MVS_RX_FISL_SZ,
					 &mvi->rx_fis_dma, GFP_KERNEL);
	if (!mvi->rx_fis)
		goto err_out;
	memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);

	mvi->rx = dma_alloc_coherent(mvi->dev,
				     sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
				     &mvi->rx_dma, GFP_KERNEL);
	if (!mvi->rx)
		goto err_out;
	memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
	mvi->rx[0] = cpu_to_le32(0xfff);
	mvi->rx_cons = 0xfff;

	mvi->slot = dma_alloc_coherent(mvi->dev,
				       sizeof(*mvi->slot) * slot_nr,
				       &mvi->slot_dma, GFP_KERNEL);
	if (!mvi->slot)
		goto err_out;
	memset(mvi->slot, 0, sizeof(*mvi->slot) * slot_nr);

	mvi->bulk_buffer = dma_alloc_coherent(mvi->dev,
				       TRASH_BUCKET_SIZE,
				       &mvi->bulk_buffer_dma, GFP_KERNEL);
	if (!mvi->bulk_buffer)
		goto err_out;

	mvi->bulk_buffer1 = dma_alloc_coherent(mvi->dev,
				       TRASH_BUCKET_SIZE,
				       &mvi->bulk_buffer_dma1, GFP_KERNEL);
	if (!mvi->bulk_buffer1)
		goto err_out;

	sprintf(pool_name, "%s%d", "mvs_dma_pool", mvi->id);
	mvi->dma_pool = pci_pool_create(pool_name, mvi->pdev, MVS_SLOT_BUF_SZ, 16, 0);
	if (!mvi->dma_pool) {
			printk(KERN_DEBUG "failed to create dma pool %s.\n", pool_name);
			goto err_out;
	}
	mvi->tags_num = slot_nr;

	/* Initialize tags */
	mvs_tag_init(mvi);
	return 0;
err_out:
	return 1;
}


int mvs_ioremap(struct mvs_info *mvi, int bar, int bar_ex)
{
	unsigned long res_start, res_len, res_flag, res_flag_ex = 0;
	struct pci_dev *pdev = mvi->pdev;
	if (bar_ex != -1) {
		/*
		 * ioremap main and peripheral registers
		 */
		res_start = pci_resource_start(pdev, bar_ex);
		res_len = pci_resource_len(pdev, bar_ex);
		if (!res_start || !res_len)
			goto err_out;

		res_flag_ex = pci_resource_flags(pdev, bar_ex);
		if (res_flag_ex & IORESOURCE_MEM) {
			if (res_flag_ex & IORESOURCE_CACHEABLE)
				mvi->regs_ex = ioremap(res_start, res_len);
			else
				mvi->regs_ex = ioremap_nocache(res_start,
						res_len);
		} else
			mvi->regs_ex = (void *)res_start;
		if (!mvi->regs_ex)
			goto err_out;
	}

	res_start = pci_resource_start(pdev, bar);
	res_len = pci_resource_len(pdev, bar);
	if (!res_start || !res_len)
		goto err_out;

	res_flag = pci_resource_flags(pdev, bar);
	if (res_flag & IORESOURCE_CACHEABLE)
		mvi->regs = ioremap(res_start, res_len);
	else
		mvi->regs = ioremap_nocache(res_start, res_len);

	if (!mvi->regs) {
		if (mvi->regs_ex && (res_flag_ex & IORESOURCE_MEM))
			iounmap(mvi->regs_ex);
		mvi->regs_ex = NULL;
		goto err_out;
	}

	return 0;
err_out:
	return -1;
}

void mvs_iounmap(void __iomem *regs)
{
	iounmap(regs);
}

static struct mvs_info *mvs_pci_alloc(struct pci_dev *pdev,
				const struct pci_device_id *ent,
				struct Scsi_Host *shost, unsigned int id)
{
	struct mvs_info *mvi = NULL;
	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);

	mvi = kzalloc(sizeof(*mvi) +
		(1L << mvs_chips[ent->driver_data].slot_width) *
		sizeof(struct mvs_slot_info), GFP_KERNEL);
	if (!mvi)
		return NULL;

	mvi->pdev = pdev;
	mvi->dev = &pdev->dev;
	mvi->chip_id = ent->driver_data;
	mvi->chip = &mvs_chips[mvi->chip_id];
	INIT_LIST_HEAD(&mvi->wq_list);

	((struct mvs_prv_info *)sha->lldd_ha)->mvi[id] = mvi;
	((struct mvs_prv_info *)sha->lldd_ha)->n_phy = mvi->chip->n_phy;

	mvi->id = id;
	mvi->sas = sha;
	mvi->shost = shost;

	mvi->tags = kzalloc(MVS_CHIP_SLOT_SZ>>3, GFP_KERNEL);
	if (!mvi->tags)
		goto err_out;

	if (MVS_CHIP_DISP->chip_ioremap(mvi))
		goto err_out;
	if (!mvs_alloc(mvi, shost))
		return mvi;
err_out:
	mvs_free(mvi);
	return NULL;
}

static int pci_go_64(struct pci_dev *pdev)
{
	int rc;

	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
		if (rc) {
			rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
			if (rc) {
				dev_printk(KERN_ERR, &pdev->dev,
					   "64-bit DMA enable failed\n");
				return rc;
			}
		}
	} else {
		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (rc) {
			dev_printk(KERN_ERR, &pdev->dev,
				   "32-bit DMA enable failed\n");
			return rc;
		}
		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
		if (rc) {
			dev_printk(KERN_ERR, &pdev->dev,
				   "32-bit consistent DMA enable failed\n");
			return rc;
		}
	}

	return rc;
}

static int mvs_prep_sas_ha_init(struct Scsi_Host *shost,
				const struct mvs_chip_info *chip_info)
{
	int phy_nr, port_nr; unsigned short core_nr;
	struct asd_sas_phy **arr_phy;
	struct asd_sas_port **arr_port;
	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);

	core_nr = chip_info->n_host;
	phy_nr  = core_nr * chip_info->n_phy;
	port_nr = phy_nr;

	memset(sha, 0x00, sizeof(struct sas_ha_struct));
	arr_phy  = kcalloc(phy_nr, sizeof(void *), GFP_KERNEL);
	arr_port = kcalloc(port_nr, sizeof(void *), GFP_KERNEL);
	if (!arr_phy || !arr_port)
		goto exit_free;

	sha->sas_phy = arr_phy;
	sha->sas_port = arr_port;
	sha->core.shost = shost;

	sha->lldd_ha = kzalloc(sizeof(struct mvs_prv_info), GFP_KERNEL);
	if (!sha->lldd_ha)
		goto exit_free;

	((struct mvs_prv_info *)sha->lldd_ha)->n_host = core_nr;

	shost->transportt = mvs_stt;
	shost->max_id = MVS_MAX_DEVICES;
	shost->max_lun = ~0;
	shost->max_channel = 1;
	shost->max_cmd_len = 16;

	return 0;
exit_free:
	kfree(arr_phy);
	kfree(arr_port);
	return -1;

}

static void  mvs_post_sas_ha_init(struct Scsi_Host *shost,
			const struct mvs_chip_info *chip_info)
{
	int can_queue, i = 0, j = 0;
	struct mvs_info *mvi = NULL;
	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
	unsigned short nr_core = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;

	for (j = 0; j < nr_core; j++) {
		mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
		for (i = 0; i < chip_info->n_phy; i++) {
			sha->sas_phy[j * chip_info->n_phy  + i] =
				&mvi->phy[i].sas_phy;
			sha->sas_port[j * chip_info->n_phy + i] =
				&mvi->port[i].sas_port;
		}
	}

	sha->sas_ha_name = DRV_NAME;
	sha->dev = mvi->dev;
	sha->lldd_module = THIS_MODULE;
	sha->sas_addr = &mvi->sas_addr[0];

	sha->num_phys = nr_core * chip_info->n_phy;

	sha->lldd_max_execute_num = lldd_max_execute_num;

	if (mvi->flags & MVF_FLAG_SOC)
		can_queue = MVS_SOC_CAN_QUEUE;
	else
		can_queue = MVS_CHIP_SLOT_SZ;

	sha->lldd_queue_size = can_queue;
	shost->sg_tablesize = min_t(u16, SG_ALL, MVS_MAX_SG);
	shost->can_queue = can_queue;
	mvi->shost->cmd_per_lun = MVS_QUEUE_SIZE;
	sha->core.shost = mvi->shost;
}

static void mvs_init_sas_add(struct mvs_info *mvi)
{
	u8 i;
	for (i = 0; i < mvi->chip->n_phy; i++) {
		mvi->phy[i].dev_sas_addr = 0x5005043011ab0000ULL;
		mvi->phy[i].dev_sas_addr =
			cpu_to_be64((u64)(*(u64 *)&mvi->phy[i].dev_sas_addr));
	}

	memcpy(mvi->sas_addr, &mvi->phy[0].dev_sas_addr, SAS_ADDR_SIZE);
}

static int mvs_pci_init(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	unsigned int rc, nhost = 0;
	struct mvs_info *mvi;
	struct mvs_prv_info *mpi;
	irq_handler_t irq_handler = mvs_interrupt;
	struct Scsi_Host *shost = NULL;
	const struct mvs_chip_info *chip;

	dev_printk(KERN_INFO, &pdev->dev,
		"mvsas: driver version %s\n", DRV_VERSION);
	rc = pci_enable_device(pdev);
	if (rc)
		goto err_out_enable;

	pci_set_master(pdev);

	rc = pci_request_regions(pdev, DRV_NAME);
	if (rc)
		goto err_out_disable;

	rc = pci_go_64(pdev);
	if (rc)
		goto err_out_regions;

	shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
	if (!shost) {
		rc = -ENOMEM;
		goto err_out_regions;
	}

	chip = &mvs_chips[ent->driver_data];
	SHOST_TO_SAS_HA(shost) =
		kcalloc(1, sizeof(struct sas_ha_struct), GFP_KERNEL);
	if (!SHOST_TO_SAS_HA(shost)) {
		kfree(shost);
		rc = -ENOMEM;
		goto err_out_regions;
	}

	rc = mvs_prep_sas_ha_init(shost, chip);
	if (rc) {
		kfree(shost);
		rc = -ENOMEM;
		goto err_out_regions;
	}

	pci_set_drvdata(pdev, SHOST_TO_SAS_HA(shost));

	do {
		mvi = mvs_pci_alloc(pdev, ent, shost, nhost);
		if (!mvi) {
			rc = -ENOMEM;
			goto err_out_regions;
		}

		memset(&mvi->hba_info_param, 0xFF,
			sizeof(struct hba_info_page));

		mvs_init_sas_add(mvi);

		mvi->instance = nhost;
		rc = MVS_CHIP_DISP->chip_init(mvi);
		if (rc) {
			mvs_free(mvi);
			goto err_out_regions;
		}
		nhost++;
	} while (nhost < chip->n_host);
	mpi = (struct mvs_prv_info *)(SHOST_TO_SAS_HA(shost)->lldd_ha);
#ifdef CONFIG_SCSI_MVSAS_TASKLET
	tasklet_init(&(mpi->mv_tasklet), mvs_tasklet,
		     (unsigned long)SHOST_TO_SAS_HA(shost));
#endif

	mvs_post_sas_ha_init(shost, chip);

	rc = scsi_add_host(shost, &pdev->dev);
	if (rc)
		goto err_out_shost;

	rc = sas_register_ha(SHOST_TO_SAS_HA(shost));
	if (rc)
		goto err_out_shost;
	rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED,
		DRV_NAME, SHOST_TO_SAS_HA(shost));
	if (rc)
		goto err_not_sas;

	MVS_CHIP_DISP->interrupt_enable(mvi);

	scsi_scan_host(mvi->shost);

	return 0;

err_not_sas:
	sas_unregister_ha(SHOST_TO_SAS_HA(shost));
err_out_shost:
	scsi_remove_host(mvi->shost);
err_out_regions:
	pci_release_regions(pdev);
err_out_disable:
	pci_disable_device(pdev);
err_out_enable:
	return rc;
}

static void mvs_pci_remove(struct pci_dev *pdev)
{
	unsigned short core_nr, i = 0;
	struct sas_ha_struct *sha = pci_get_drvdata(pdev);
	struct mvs_info *mvi = NULL;

	core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
	mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];

#ifdef CONFIG_SCSI_MVSAS_TASKLET
	tasklet_kill(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
#endif

	pci_set_drvdata(pdev, NULL);
	sas_unregister_ha(sha);
	sas_remove_host(mvi->shost);
	scsi_remove_host(mvi->shost);

	MVS_CHIP_DISP->interrupt_disable(mvi);
	free_irq(mvi->pdev->irq, sha);
	for (i = 0; i < core_nr; i++) {
		mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
		mvs_free(mvi);
	}
	kfree(sha->sas_phy);
	kfree(sha->sas_port);
	kfree(sha);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	return;
}

static struct pci_device_id mvs_pci_table[] = {
	{ PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
	{ PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
	{
		.vendor 	= PCI_VENDOR_ID_MARVELL,
		.device 	= 0x6440,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= 0x6480,
		.class		= 0,
		.class_mask	= 0,
		.driver_data	= chip_6485,
	},
	{ PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
	{ PCI_VDEVICE(MARVELL, 0x6485), chip_6485 },
	{ PCI_VDEVICE(MARVELL, 0x9480), chip_9480 },
	{ PCI_VDEVICE(MARVELL, 0x9180), chip_9180 },
	{ PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1300), chip_1300 },
	{ PCI_VDEVICE(ARECA, PCI_DEVICE_ID_ARECA_1320), chip_1320 },
	{ PCI_VDEVICE(ADAPTEC2, 0x0450), chip_6440 },
	{ PCI_VDEVICE(TTI, 0x2710), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2720), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2721), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2722), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2740), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2744), chip_9480 },
	{ PCI_VDEVICE(TTI, 0x2760), chip_9480 },
	{
		.vendor		= PCI_VENDOR_ID_MARVELL_EXT,
		.device		= 0x9480,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= 0x9480,
		.class		= 0,
		.class_mask	= 0,
		.driver_data	= chip_9480,
	},
	{
		.vendor		= PCI_VENDOR_ID_MARVELL_EXT,
		.device		= 0x9445,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= 0x9480,
		.class		= 0,
		.class_mask	= 0,
		.driver_data	= chip_9445,
	},
	{
		.vendor		= PCI_VENDOR_ID_MARVELL_EXT,
		.device		= 0x9485,
		.subvendor	= PCI_ANY_ID,
		.subdevice	= 0x9480,
		.class		= 0,
		.class_mask	= 0,
		.driver_data	= chip_9485,
	},
	{ PCI_VDEVICE(OCZ, 0x1021), chip_9485}, /* OCZ RevoDrive3 */
	{ PCI_VDEVICE(OCZ, 0x1022), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1040), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1041), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1042), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1043), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1044), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1080), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1083), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */
	{ PCI_VDEVICE(OCZ, 0x1084), chip_9485}, /* OCZ RevoDrive3/zDriveR4 (exact model unknown) */

	{ }	/* terminate list */
};

static struct pci_driver mvs_pci_driver = {
	.name		= DRV_NAME,
	.id_table	= mvs_pci_table,
	.probe		= mvs_pci_init,
	.remove		= mvs_pci_remove,
};

static ssize_t
mvs_show_driver_version(struct device *cdev,
		struct device_attribute *attr,  char *buffer)
{
	return snprintf(buffer, PAGE_SIZE, "%s\n", DRV_VERSION);
}

static DEVICE_ATTR(driver_version,
			 S_IRUGO,
			 mvs_show_driver_version,
			 NULL);

static ssize_t
mvs_store_interrupt_coalescing(struct device *cdev,
			struct device_attribute *attr,
			const char *buffer, size_t size)
{
	int val = 0;
	struct mvs_info *mvi = NULL;
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
	u8 i, core_nr;
	if (buffer == NULL)
		return size;

	if (sscanf(buffer, "%d", &val) != 1)
		return -EINVAL;

	if (val >= 0x10000) {
		mv_dprintk("interrupt coalescing timer %d us is"
			"too long\n", val);
		return strlen(buffer);
	}

	interrupt_coalescing = val;

	core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
	mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[0];

	if (unlikely(!mvi))
		return -EINVAL;

	for (i = 0; i < core_nr; i++) {
		mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[i];
		if (MVS_CHIP_DISP->tune_interrupt)
			MVS_CHIP_DISP->tune_interrupt(mvi,
				interrupt_coalescing);
	}
	mv_dprintk("set interrupt coalescing time to %d us\n",
		interrupt_coalescing);
	return strlen(buffer);
}

static ssize_t mvs_show_interrupt_coalescing(struct device *cdev,
			struct device_attribute *attr, char *buffer)
{
	return snprintf(buffer, PAGE_SIZE, "%d\n", interrupt_coalescing);
}

static DEVICE_ATTR(interrupt_coalescing,
			 S_IRUGO|S_IWUSR,
			 mvs_show_interrupt_coalescing,
			 mvs_store_interrupt_coalescing);

/* task handler */
struct task_struct *mvs_th;
static int __init mvs_init(void)
{
	int rc;
	mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
	if (!mvs_stt)
		return -ENOMEM;

	mvs_task_list_cache = kmem_cache_create("mvs_task_list", sizeof(struct mvs_task_list),
							 0, SLAB_HWCACHE_ALIGN, NULL);
	if (!mvs_task_list_cache) {
		rc = -ENOMEM;
		mv_printk("%s: mvs_task_list_cache alloc failed! \n", __func__);
		goto err_out;
	}

	rc = pci_register_driver(&mvs_pci_driver);

	if (rc)
		goto err_out;

	return 0;

err_out:
	sas_release_transport(mvs_stt);
	return rc;
}

static void __exit mvs_exit(void)
{
	pci_unregister_driver(&mvs_pci_driver);
	sas_release_transport(mvs_stt);
	kmem_cache_destroy(mvs_task_list_cache);
}

struct device_attribute *mvst_host_attrs[] = {
	&dev_attr_driver_version,
	&dev_attr_interrupt_coalescing,
	NULL,
};

module_init(mvs_init);
module_exit(mvs_exit);

MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
MODULE_VERSION(DRV_VERSION);
MODULE_LICENSE("GPL");
#ifdef CONFIG_PCI
MODULE_DEVICE_TABLE(pci, mvs_pci_table);
#endif