aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/aic94xx/aic94xx_init.c
blob: 63bcde24644740baeadb8b956c6c0ab68f88b16e (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
/*
 * Aic94xx SAS/SATA driver initialization.
 *
 * Copyright (C) 2005 Adaptec, Inc.  All rights reserved.
 * Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
 *
 * This file is licensed under GPLv2.
 *
 * This file is part of the aic94xx driver.
 *
 * The aic94xx driver 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.
 *
 * The aic94xx driver 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 the aic94xx driver; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/delay.h>

#include <scsi/scsi_host.h>

#include "aic94xx.h"
#include "aic94xx_reg.h"
#include "aic94xx_hwi.h"
#include "aic94xx_seq.h"

/* The format is "version.release.patchlevel" */
#define ASD_DRIVER_VERSION "1.0.3"

static int use_msi = 0;
module_param_named(use_msi, use_msi, int, S_IRUGO);
MODULE_PARM_DESC(use_msi, "\n"
	"\tEnable(1) or disable(0) using PCI MSI.\n"
	"\tDefault: 0");

static int lldd_max_execute_num = 0;
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 aic94xx SAS LLDD supports both modes.\n"
	"\tDefault: 0 (Direct Mode).\n");

char sas_addr_str[2*SAS_ADDR_SIZE + 1] = "";

static struct scsi_transport_template *aic94xx_transport_template;
static int asd_scan_finished(struct Scsi_Host *, unsigned long);
static void asd_scan_start(struct Scsi_Host *);

static struct scsi_host_template aic94xx_sht = {
	.module			= THIS_MODULE,
	/* .name is initialized */
	.name			= "aic94xx",
	.queuecommand		= sas_queuecommand,
	.target_alloc		= sas_target_alloc,
	.slave_configure	= sas_slave_configure,
	.slave_destroy		= sas_slave_destroy,
	.scan_finished		= asd_scan_finished,
	.scan_start		= asd_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,
	.slave_alloc		= sas_slave_alloc,
	.target_destroy		= sas_target_destroy,
	.ioctl			= sas_ioctl,
};

static int __devinit asd_map_memio(struct asd_ha_struct *asd_ha)
{
	int err, i;
	struct asd_ha_addrspace *io_handle;

	asd_ha->iospace = 0;
	for (i = 0; i < 3; i += 2) {
		io_handle = &asd_ha->io_handle[i==0?0:1];
		io_handle->start = pci_resource_start(asd_ha->pcidev, i);
		io_handle->len   = pci_resource_len(asd_ha->pcidev, i);
		io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
		err = -ENODEV;
		if (!io_handle->start || !io_handle->len) {
			asd_printk("MBAR%d start or length for %s is 0.\n",
				   i==0?0:1, pci_name(asd_ha->pcidev));
			goto Err;
		}
		err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
		if (err) {
			asd_printk("couldn't reserve memory region for %s\n",
				   pci_name(asd_ha->pcidev));
			goto Err;
		}
		if (io_handle->flags & IORESOURCE_CACHEABLE)
			io_handle->addr = ioremap(io_handle->start,
						  io_handle->len);
		else
			io_handle->addr = ioremap_nocache(io_handle->start,
							  io_handle->len);
		if (!io_handle->addr) {
			asd_printk("couldn't map MBAR%d of %s\n", i==0?0:1,
				   pci_name(asd_ha->pcidev));
			goto Err_unreq;
		}
	}

	return 0;
Err_unreq:
	pci_release_region(asd_ha->pcidev, i);
Err:
	if (i > 0) {
		io_handle = &asd_ha->io_handle[0];
		iounmap(io_handle->addr);
		pci_release_region(asd_ha->pcidev, 0);
	}
	return err;
}

static void __devexit asd_unmap_memio(struct asd_ha_struct *asd_ha)
{
	struct asd_ha_addrspace *io_handle;

	io_handle = &asd_ha->io_handle[1];
	iounmap(io_handle->addr);
	pci_release_region(asd_ha->pcidev, 2);

	io_handle = &asd_ha->io_handle[0];
	iounmap(io_handle->addr);
	pci_release_region(asd_ha->pcidev, 0);
}

static int __devinit asd_map_ioport(struct asd_ha_struct *asd_ha)
{
	int i = PCI_IOBAR_OFFSET, err;
	struct asd_ha_addrspace *io_handle = &asd_ha->io_handle[0];

	asd_ha->iospace = 1;
	io_handle->start = pci_resource_start(asd_ha->pcidev, i);
	io_handle->len   = pci_resource_len(asd_ha->pcidev, i);
	io_handle->flags = pci_resource_flags(asd_ha->pcidev, i);
	io_handle->addr  = (void __iomem *) io_handle->start;
	if (!io_handle->start || !io_handle->len) {
		asd_printk("couldn't get IO ports for %s\n",
			   pci_name(asd_ha->pcidev));
		return -ENODEV;
	}
	err = pci_request_region(asd_ha->pcidev, i, ASD_DRIVER_NAME);
	if (err) {
		asd_printk("couldn't reserve io space for %s\n",
			   pci_name(asd_ha->pcidev));
	}

	return err;
}

static void __devexit asd_unmap_ioport(struct asd_ha_struct *asd_ha)
{
	pci_release_region(asd_ha->pcidev, PCI_IOBAR_OFFSET);
}

static int __devinit asd_map_ha(struct asd_ha_struct *asd_ha)
{
	int err;
	u16 cmd_reg;

	err = pci_read_config_word(asd_ha->pcidev, PCI_COMMAND, &cmd_reg);
	if (err) {
		asd_printk("couldn't read command register of %s\n",
			   pci_name(asd_ha->pcidev));
		goto Err;
	}

	err = -ENODEV;
	if (cmd_reg & PCI_COMMAND_MEMORY) {
		if ((err = asd_map_memio(asd_ha)))
			goto Err;
	} else if (cmd_reg & PCI_COMMAND_IO) {
		if ((err = asd_map_ioport(asd_ha)))
			goto Err;
		asd_printk("%s ioport mapped -- upgrade your hardware\n",
			   pci_name(asd_ha->pcidev));
	} else {
		asd_printk("no proper device access to %s\n",
			   pci_name(asd_ha->pcidev));
		goto Err;
	}

	return 0;
Err:
	return err;
}

static void __devexit asd_unmap_ha(struct asd_ha_struct *asd_ha)
{
	if (asd_ha->iospace)
		asd_unmap_ioport(asd_ha);
	else
		asd_unmap_memio(asd_ha);
}

static const char *asd_dev_rev[30] = {
	[0] = "A0",
	[1] = "A1",
	[8] = "B0",
};

static int __devinit asd_common_setup(struct asd_ha_struct *asd_ha)
{
	int err, i;

	asd_ha->revision_id = asd_ha->pcidev->revision;

	err = -ENODEV;
	if (asd_ha->revision_id < AIC9410_DEV_REV_B0) {
		asd_printk("%s is revision %s (%X), which is not supported\n",
			   pci_name(asd_ha->pcidev),
			   asd_dev_rev[asd_ha->revision_id],
			   asd_ha->revision_id);
		goto Err;
	}
	/* Provide some sane default values. */
	asd_ha->hw_prof.max_scbs = 512;
	asd_ha->hw_prof.max_ddbs = ASD_MAX_DDBS;
	asd_ha->hw_prof.num_phys = ASD_MAX_PHYS;
	/* All phys are enabled, by default. */
	asd_ha->hw_prof.enabled_phys = 0xFF;
	for (i = 0; i < ASD_MAX_PHYS; i++) {
		asd_ha->hw_prof.phy_desc[i].max_sas_lrate =
			SAS_LINK_RATE_3_0_GBPS;
		asd_ha->hw_prof.phy_desc[i].min_sas_lrate =
			SAS_LINK_RATE_1_5_GBPS;
		asd_ha->hw_prof.phy_desc[i].max_sata_lrate =
			SAS_LINK_RATE_1_5_GBPS;
		asd_ha->hw_prof.phy_desc[i].min_sata_lrate =
			SAS_LINK_RATE_1_5_GBPS;
	}

	return 0;
Err:
	return err;
}

static int __devinit asd_aic9410_setup(struct asd_ha_struct *asd_ha)
{
	int err = asd_common_setup(asd_ha);

	if (err)
		return err;

	asd_ha->hw_prof.addr_range = 8;
	asd_ha->hw_prof.port_name_base = 0;
	asd_ha->hw_prof.dev_name_base = 8;
	asd_ha->hw_prof.sata_name_base = 16;

	return 0;
}

static int __devinit asd_aic9405_setup(struct asd_ha_struct *asd_ha)
{
	int err = asd_common_setup(asd_ha);

	if (err)
		return err;

	asd_ha->hw_prof.addr_range = 4;
	asd_ha->hw_prof.port_name_base = 0;
	asd_ha->hw_prof.dev_name_base = 4;
	asd_ha->hw_prof.sata_name_base = 8;

	return 0;
}

static ssize_t asd_show_dev_rev(struct device *dev,
				struct device_attribute *attr, char *buf)
{
	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
	return snprintf(buf, PAGE_SIZE, "%s\n",
			asd_dev_rev[asd_ha->revision_id]);
}
static DEVICE_ATTR(revision, S_IRUGO, asd_show_dev_rev, NULL);

static ssize_t asd_show_dev_bios_build(struct device *dev,
				       struct device_attribute *attr,char *buf)
{
	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
	return snprintf(buf, PAGE_SIZE, "%d\n", asd_ha->hw_prof.bios.bld);
}
static DEVICE_ATTR(bios_build, S_IRUGO, asd_show_dev_bios_build, NULL);

static ssize_t asd_show_dev_pcba_sn(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
	return snprintf(buf, PAGE_SIZE, "%s\n", asd_ha->hw_prof.pcba_sn);
}
static DEVICE_ATTR(pcba_sn, S_IRUGO, asd_show_dev_pcba_sn, NULL);

static int asd_create_dev_attrs(struct asd_ha_struct *asd_ha)
{
	int err;

	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_revision);
	if (err)
		return err;

	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
	if (err)
		goto err_rev;

	err = device_create_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
	if (err)
		goto err_biosb;

	return 0;

err_biosb:
	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
err_rev:
	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
	return err;
}

static void asd_remove_dev_attrs(struct asd_ha_struct *asd_ha)
{
	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_revision);
	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_bios_build);
	device_remove_file(&asd_ha->pcidev->dev, &dev_attr_pcba_sn);
}

/* The first entry, 0, is used for dynamic ids, the rest for devices
 * we know about.
 */
static struct asd_pcidev_struct {
	const char * name;
	int (*setup)(struct asd_ha_struct *asd_ha);
} asd_pcidev_data[] = {
	/* Id 0 is used for dynamic ids. */
	{ .name  = "Adaptec AIC-94xx SAS/SATA Host Adapter",
	  .setup = asd_aic9410_setup
	},
	{ .name  = "Adaptec AIC-9410W SAS/SATA Host Adapter",
	  .setup = asd_aic9410_setup
	},
	{ .name  = "Adaptec AIC-9405W SAS/SATA Host Adapter",
	  .setup = asd_aic9405_setup
	},
};

static inline int asd_create_ha_caches(struct asd_ha_struct *asd_ha)
{
	asd_ha->scb_pool = dma_pool_create(ASD_DRIVER_NAME "_scb_pool",
					   &asd_ha->pcidev->dev,
					   sizeof(struct scb),
					   8, 0);
	if (!asd_ha->scb_pool) {
		asd_printk("couldn't create scb pool\n");
		return -ENOMEM;
	}

	return 0;
}

/**
 * asd_free_edbs -- free empty data buffers
 * asd_ha: pointer to host adapter structure
 */
static inline void asd_free_edbs(struct asd_ha_struct *asd_ha)
{
	struct asd_seq_data *seq = &asd_ha->seq;
	int i;

	for (i = 0; i < seq->num_edbs; i++)
		asd_free_coherent(asd_ha, seq->edb_arr[i]);
	kfree(seq->edb_arr);
	seq->edb_arr = NULL;
}

static inline void asd_free_escbs(struct asd_ha_struct *asd_ha)
{
	struct asd_seq_data *seq = &asd_ha->seq;
	int i;

	for (i = 0; i < seq->num_escbs; i++) {
		if (!list_empty(&seq->escb_arr[i]->list))
			list_del_init(&seq->escb_arr[i]->list);

		asd_ascb_free(seq->escb_arr[i]);
	}
	kfree(seq->escb_arr);
	seq->escb_arr = NULL;
}

static inline void asd_destroy_ha_caches(struct asd_ha_struct *asd_ha)
{
	int i;

	if (asd_ha->hw_prof.ddb_ext)
		asd_free_coherent(asd_ha, asd_ha->hw_prof.ddb_ext);
	if (asd_ha->hw_prof.scb_ext)
		asd_free_coherent(asd_ha, asd_ha->hw_prof.scb_ext);

	if (asd_ha->hw_prof.ddb_bitmap)
		kfree(asd_ha->hw_prof.ddb_bitmap);
	asd_ha->hw_prof.ddb_bitmap = NULL;

	for (i = 0; i < ASD_MAX_PHYS; i++) {
		struct asd_phy *phy = &asd_ha->phys[i];

		asd_free_coherent(asd_ha, phy->id_frm_tok);
	}
	if (asd_ha->seq.escb_arr)
		asd_free_escbs(asd_ha);
	if (asd_ha->seq.edb_arr)
		asd_free_edbs(asd_ha);
	if (asd_ha->hw_prof.ue.area) {
		kfree(asd_ha->hw_prof.ue.area);
		asd_ha->hw_prof.ue.area = NULL;
	}
	if (asd_ha->seq.tc_index_array) {
		kfree(asd_ha->seq.tc_index_array);
		kfree(asd_ha->seq.tc_index_bitmap);
		asd_ha->seq.tc_index_array = NULL;
		asd_ha->seq.tc_index_bitmap = NULL;
	}
	if (asd_ha->seq.actual_dl) {
			asd_free_coherent(asd_ha, asd_ha->seq.actual_dl);
			asd_ha->seq.actual_dl = NULL;
			asd_ha->seq.dl = NULL;
	}
	if (asd_ha->seq.next_scb.vaddr) {
		dma_pool_free(asd_ha->scb_pool, asd_ha->seq.next_scb.vaddr,
			      asd_ha->seq.next_scb.dma_handle);
		asd_ha->seq.next_scb.vaddr = NULL;
	}
	dma_pool_destroy(asd_ha->scb_pool);
	asd_ha->scb_pool = NULL;
}

struct kmem_cache *asd_dma_token_cache;
struct kmem_cache *asd_ascb_cache;

static int asd_create_global_caches(void)
{
	if (!asd_dma_token_cache) {
		asd_dma_token_cache
			= kmem_cache_create(ASD_DRIVER_NAME "_dma_token",
					    sizeof(struct asd_dma_tok),
					    0,
					    SLAB_HWCACHE_ALIGN,
					    NULL);
		if (!asd_dma_token_cache) {
			asd_printk("couldn't create dma token cache\n");
			return -ENOMEM;
		}
	}

	if (!asd_ascb_cache) {
		asd_ascb_cache = kmem_cache_create(ASD_DRIVER_NAME "_ascb",
						   sizeof(struct asd_ascb),
						   0,
						   SLAB_HWCACHE_ALIGN,
						   NULL);
		if (!asd_ascb_cache) {
			asd_printk("couldn't create ascb cache\n");
			goto Err;
		}
	}

	return 0;
Err:
	kmem_cache_destroy(asd_dma_token_cache);
	asd_dma_token_cache = NULL;
	return -ENOMEM;
}

static void asd_destroy_global_caches(void)
{
	if (asd_dma_token_cache)
		kmem_cache_destroy(asd_dma_token_cache);
	asd_dma_token_cache = NULL;

	if (asd_ascb_cache)
		kmem_cache_destroy(asd_ascb_cache);
	asd_ascb_cache = NULL;
}

static int asd_register_sas_ha(struct asd_ha_struct *asd_ha)
{
	int i;
	struct asd_sas_phy   **sas_phys =
		kmalloc(ASD_MAX_PHYS * sizeof(struct asd_sas_phy), GFP_KERNEL);
	struct asd_sas_port  **sas_ports =
		kmalloc(ASD_MAX_PHYS * sizeof(struct asd_sas_port), GFP_KERNEL);

	if (!sas_phys || !sas_ports) {
		kfree(sas_phys);
		kfree(sas_ports);
		return -ENOMEM;
	}

	asd_ha->sas_ha.sas_ha_name = (char *) asd_ha->name;
	asd_ha->sas_ha.lldd_module = THIS_MODULE;
	asd_ha->sas_ha.sas_addr = &asd_ha->hw_prof.sas_addr[0];

	for (i = 0; i < ASD_MAX_PHYS; i++) {
		sas_phys[i] = &asd_ha->phys[i].sas_phy;
		sas_ports[i] = &asd_ha->ports[i];
	}

	asd_ha->sas_ha.sas_phy = sas_phys;
	asd_ha->sas_ha.sas_port= sas_ports;
	asd_ha->sas_ha.num_phys= ASD_MAX_PHYS;

	asd_ha->sas_ha.lldd_queue_size = asd_ha->seq.can_queue;
	asd_ha->sas_ha.lldd_max_execute_num = lldd_max_execute_num;

	return sas_register_ha(&asd_ha->sas_ha);
}

static int asd_unregister_sas_ha(struct asd_ha_struct *asd_ha)
{
	int err;

	err = sas_unregister_ha(&asd_ha->sas_ha);

	sas_remove_host(asd_ha->sas_ha.core.shost);
	scsi_remove_host(asd_ha->sas_ha.core.shost);
	scsi_host_put(asd_ha->sas_ha.core.shost);

	kfree(asd_ha->sas_ha.sas_phy);
	kfree(asd_ha->sas_ha.sas_port);

	return err;
}

static int __devinit asd_pci_probe(struct pci_dev *dev,
				   const struct pci_device_id *id)
{
	struct asd_pcidev_struct *asd_dev;
	unsigned asd_id = (unsigned) id->driver_data;
	struct asd_ha_struct *asd_ha;
	struct Scsi_Host *shost;
	int err;

	if (asd_id >= ARRAY_SIZE(asd_pcidev_data)) {
		asd_printk("wrong driver_data in PCI table\n");
		return -ENODEV;
	}

	if ((err = pci_enable_device(dev))) {
		asd_printk("couldn't enable device %s\n", pci_name(dev));
		return err;
	}

	pci_set_master(dev);

	err = -ENOMEM;

	shost = scsi_host_alloc(&aic94xx_sht, sizeof(void *));
	if (!shost)
		goto Err;

	asd_dev = &asd_pcidev_data[asd_id];

	asd_ha = kzalloc(sizeof(*asd_ha), GFP_KERNEL);
	if (!asd_ha) {
		asd_printk("out of memory\n");
		goto Err;
	}
	asd_ha->pcidev = dev;
	asd_ha->sas_ha.dev = &asd_ha->pcidev->dev;
	asd_ha->sas_ha.lldd_ha = asd_ha;

	asd_ha->name = asd_dev->name;
	asd_printk("found %s, device %s\n", asd_ha->name, pci_name(dev));

	SHOST_TO_SAS_HA(shost) = &asd_ha->sas_ha;
	asd_ha->sas_ha.core.shost = shost;
	shost->transportt = aic94xx_transport_template;
	shost->max_id = ~0;
	shost->max_lun = ~0;
	shost->max_cmd_len = 16;

	err = scsi_add_host(shost, &dev->dev);
	if (err) {
		scsi_host_put(shost);
		goto Err_free;
	}

	err = asd_dev->setup(asd_ha);
	if (err)
		goto Err_free;

	err = -ENODEV;
	if (!pci_set_dma_mask(dev, DMA_64BIT_MASK)
	    && !pci_set_consistent_dma_mask(dev, DMA_64BIT_MASK))
		;
	else if (!pci_set_dma_mask(dev, DMA_32BIT_MASK)
		 && !pci_set_consistent_dma_mask(dev, DMA_32BIT_MASK))
		;
	else {
		asd_printk("no suitable DMA mask for %s\n", pci_name(dev));
		goto Err_free;
	}

	pci_set_drvdata(dev, asd_ha);

	err = asd_map_ha(asd_ha);
	if (err)
		goto Err_free;

	err = asd_create_ha_caches(asd_ha);
        if (err)
		goto Err_unmap;

	err = asd_init_hw(asd_ha);
	if (err)
		goto Err_free_cache;

	asd_printk("device %s: SAS addr %llx, PCBA SN %s, %d phys, %d enabled "
		   "phys, flash %s, BIOS %s%d\n",
		   pci_name(dev), SAS_ADDR(asd_ha->hw_prof.sas_addr),
		   asd_ha->hw_prof.pcba_sn, asd_ha->hw_prof.max_phys,
		   asd_ha->hw_prof.num_phys,
		   asd_ha->hw_prof.flash.present ? "present" : "not present",
		   asd_ha->hw_prof.bios.present ? "build " : "not present",
		   asd_ha->hw_prof.bios.bld);

	shost->can_queue = asd_ha->seq.can_queue;

	if (use_msi)
		pci_enable_msi(asd_ha->pcidev);

	err = request_irq(asd_ha->pcidev->irq, asd_hw_isr, IRQF_SHARED,
			  ASD_DRIVER_NAME, asd_ha);
	if (err) {
		asd_printk("couldn't get irq %d for %s\n",
			   asd_ha->pcidev->irq, pci_name(asd_ha->pcidev));
		goto Err_irq;
	}
	asd_enable_ints(asd_ha);

	err = asd_init_post_escbs(asd_ha);
	if (err) {
		asd_printk("couldn't post escbs for %s\n",
			   pci_name(asd_ha->pcidev));
		goto Err_escbs;
	}
	ASD_DPRINTK("escbs posted\n");

	err = asd_create_dev_attrs(asd_ha);
	if (err)
		goto Err_dev_attrs;

	err = asd_register_sas_ha(asd_ha);
	if (err)
		goto Err_reg_sas;

	scsi_scan_host(shost);

	return 0;

Err_reg_sas:
	asd_remove_dev_attrs(asd_ha);
Err_dev_attrs:
Err_escbs:
	asd_disable_ints(asd_ha);
	free_irq(dev->irq, asd_ha);
Err_irq:
	if (use_msi)
		pci_disable_msi(dev);
	asd_chip_hardrst(asd_ha);
Err_free_cache:
	asd_destroy_ha_caches(asd_ha);
Err_unmap:
	asd_unmap_ha(asd_ha);
Err_free:
	kfree(asd_ha);
	scsi_remove_host(shost);
Err:
	pci_disable_device(dev);
	return err;
}

static void asd_free_queues(struct asd_ha_struct *asd_ha)
{
	unsigned long flags;
	LIST_HEAD(pending);
	struct list_head *n, *pos;

	spin_lock_irqsave(&asd_ha->seq.pend_q_lock, flags);
	asd_ha->seq.pending = 0;
	list_splice_init(&asd_ha->seq.pend_q, &pending);
	spin_unlock_irqrestore(&asd_ha->seq.pend_q_lock, flags);

	if (!list_empty(&pending))
		ASD_DPRINTK("Uh-oh! Pending is not empty!\n");

	list_for_each_safe(pos, n, &pending) {
		struct asd_ascb *ascb = list_entry(pos, struct asd_ascb, list);
		/*
		 * Delete unexpired ascb timers.  This may happen if we issue
		 * a CONTROL PHY scb to an adapter and rmmod before the scb
		 * times out.  Apparently we don't wait for the CONTROL PHY
		 * to complete, so it doesn't matter if we kill the timer.
		 */
		del_timer_sync(&ascb->timer);
		WARN_ON(ascb->scb->header.opcode != CONTROL_PHY);

		list_del_init(pos);
		ASD_DPRINTK("freeing from pending\n");
		asd_ascb_free(ascb);
	}
}

static void asd_turn_off_leds(struct asd_ha_struct *asd_ha)
{
	u8 phy_mask = asd_ha->hw_prof.enabled_phys;
	u8 i;

	for_each_phy(phy_mask, phy_mask, i) {
		asd_turn_led(asd_ha, i, 0);
		asd_control_led(asd_ha, i, 0);
	}
}

static void __devexit asd_pci_remove(struct pci_dev *dev)
{
	struct asd_ha_struct *asd_ha = pci_get_drvdata(dev);

	if (!asd_ha)
		return;

	asd_unregister_sas_ha(asd_ha);

	asd_disable_ints(asd_ha);

	asd_remove_dev_attrs(asd_ha);

	/* XXX more here as needed */

	free_irq(dev->irq, asd_ha);
	if (use_msi)
		pci_disable_msi(asd_ha->pcidev);
	asd_turn_off_leds(asd_ha);
	asd_chip_hardrst(asd_ha);
	asd_free_queues(asd_ha);
	asd_destroy_ha_caches(asd_ha);
	asd_unmap_ha(asd_ha);
	kfree(asd_ha);
	pci_disable_device(dev);
	return;
}

static void asd_scan_start(struct Scsi_Host *shost)
{
	struct asd_ha_struct *asd_ha;
	int err;

	asd_ha = SHOST_TO_SAS_HA(shost)->lldd_ha;
	err = asd_enable_phys(asd_ha, asd_ha->hw_prof.enabled_phys);
	if (err)
		asd_printk("Couldn't enable phys, err:%d\n", err);
}

static int asd_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
	/* give the phy enabling interrupt event time to come in (1s
	 * is empirically about all it takes) */
	if (time < HZ)
		return 0;
	/* Wait for discovery to finish */
	scsi_flush_work(shost);
	return 1;
}

static ssize_t asd_version_show(struct device_driver *driver, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%s\n", ASD_DRIVER_VERSION);
}
static DRIVER_ATTR(version, S_IRUGO, asd_version_show, NULL);

static int asd_create_driver_attrs(struct device_driver *driver)
{
	return driver_create_file(driver, &driver_attr_version);
}

static void asd_remove_driver_attrs(struct device_driver *driver)
{
	driver_remove_file(driver, &driver_attr_version);
}

static struct sas_domain_function_template aic94xx_transport_functions = {
	.lldd_dev_found		= asd_dev_found,
	.lldd_dev_gone		= asd_dev_gone,

	.lldd_execute_task	= asd_execute_task,

	.lldd_abort_task	= asd_abort_task,
	.lldd_abort_task_set	= asd_abort_task_set,
	.lldd_clear_aca		= asd_clear_aca,
	.lldd_clear_task_set	= asd_clear_task_set,
	.lldd_I_T_nexus_reset	= NULL,
	.lldd_lu_reset		= asd_lu_reset,
	.lldd_query_task	= asd_query_task,

	.lldd_clear_nexus_port	= asd_clear_nexus_port,
	.lldd_clear_nexus_ha	= asd_clear_nexus_ha,

	.lldd_control_phy	= asd_control_phy,
};

static const struct pci_device_id aic94xx_pci_table[] __devinitdata = {
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR10),
	 0, 0, 1},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR12),
	 0, 0, 1},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR1E),
	 0, 0, 1},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR1F),
	 0, 0, 1},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR30),
	 0, 0, 2},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR32),
	 0, 0, 2},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR3E),
	 0, 0, 2},
	{PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_RAZOR3F),
	 0, 0, 2},
	{}
};

MODULE_DEVICE_TABLE(pci, aic94xx_pci_table);

static struct pci_driver aic94xx_pci_driver = {
	.name		= ASD_DRIVER_NAME,
	.id_table	= aic94xx_pci_table,
	.probe		= asd_pci_probe,
	.remove		= __devexit_p(asd_pci_remove),
};

static int __init aic94xx_init(void)
{
	int err;


	asd_printk("%s version %s loaded\n", ASD_DRIVER_DESCRIPTION,
		   ASD_DRIVER_VERSION);

	err = asd_create_global_caches();
	if (err)
		return err;

	aic94xx_transport_template =
		sas_domain_attach_transport(&aic94xx_transport_functions);
	if (!aic94xx_transport_template)
		goto out_destroy_caches;

	err = pci_register_driver(&aic94xx_pci_driver);
	if (err)
		goto out_release_transport;

	err = asd_create_driver_attrs(&aic94xx_pci_driver.driver);
	if (err)
		goto out_unregister_pcidrv;

	return err;

 out_unregister_pcidrv:
	pci_unregister_driver(&aic94xx_pci_driver);
 out_release_transport:
	sas_release_transport(aic94xx_transport_template);
 out_destroy_caches:
	asd_destroy_global_caches();

	return err;
}

static void __exit aic94xx_exit(void)
{
	asd_remove_driver_attrs(&aic94xx_pci_driver.driver);
	pci_unregister_driver(&aic94xx_pci_driver);
	sas_release_transport(aic94xx_transport_template);
	asd_release_firmware();
	asd_destroy_global_caches();
	asd_printk("%s version %s unloaded\n", ASD_DRIVER_DESCRIPTION,
		   ASD_DRIVER_VERSION);
}

module_init(aic94xx_init);
module_exit(aic94xx_exit);

MODULE_AUTHOR("Luben Tuikov <luben_tuikov@adaptec.com>");
MODULE_DESCRIPTION(ASD_DRIVER_DESCRIPTION);
MODULE_LICENSE("GPL v2");
MODULE_VERSION(ASD_DRIVER_VERSION);