summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/bcmdhd/linux_osl.c
blob: 4ef7bf7b24dc71b8b98bbc2f2c3fec8dd35c9d3c (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
/*
 * Linux OS Independent Layer
 *
 * Copyright (C) 1999-2011, Broadcom Corporation
 * 
 *         Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed to you
 * under the terms of the GNU General Public License version 2 (the "GPL"),
 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
 * following added to such license:
 * 
 *      As a special exception, the copyright holders of this software give you
 * permission to link this software with independent modules, and to copy and
 * distribute the resulting executable under terms of your choice, provided that
 * you also meet, for each linked independent module, the terms and conditions of
 * the license of that module.  An independent module is a module which is not
 * derived from this software.  The special exception does not apply to any
 * modifications of the software.
 * 
 *      Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Broadcom software provided under a license
 * other than the GPL, without Broadcom's express prior written consent.
 *
 * $Id: linux_osl.c,v 1.168.2.7 2011-01-27 17:01:13 $
 */


#define LINUX_PORT

#include <typedefs.h>
#include <bcmendian.h>
#include <linuxver.h>
#include <bcmdefs.h>
#include <osl.h>
#include <bcmutils.h>
#include <linux/delay.h>
#include <pcicfg.h>

#ifdef BCMASSERT_LOG
#include <bcm_assert_log.h>
#endif

#include <linux/fs.h>

#define PCI_CFG_RETRY 		10

#define OS_HANDLE_MAGIC		0x1234abcd	
#define BCM_MEM_FILENAME_LEN 	24		

#ifdef CONFIG_DHD_USE_STATIC_BUF
#define STATIC_BUF_MAX_NUM	16
#define STATIC_BUF_SIZE		(PAGE_SIZE * 2)
#define STATIC_BUF_TOTAL_LEN	(STATIC_BUF_MAX_NUM * STATIC_BUF_SIZE)

typedef struct bcm_static_buf {
	struct semaphore static_sem;
	unsigned char *buf_ptr;
	unsigned char buf_use[STATIC_BUF_MAX_NUM];
} bcm_static_buf_t;

static bcm_static_buf_t *bcm_static_buf = 0;

#define STATIC_PKT_MAX_NUM	8

typedef struct bcm_static_pkt {
	struct sk_buff *skb_4k[STATIC_PKT_MAX_NUM];
	struct sk_buff *skb_8k[STATIC_PKT_MAX_NUM];
	struct semaphore osl_pkt_sem;
	unsigned char pkt_use[STATIC_PKT_MAX_NUM * 2];
} bcm_static_pkt_t;

static bcm_static_pkt_t *bcm_static_skb = 0;
#endif

typedef struct bcm_mem_link {
	struct bcm_mem_link *prev;
	struct bcm_mem_link *next;
	uint	size;
	int	line;
	char	file[BCM_MEM_FILENAME_LEN];
} bcm_mem_link_t;

struct osl_info {
	osl_pubinfo_t pub;
#ifdef CTFPOOL
	ctfpool_t *ctfpool;
#endif 
	uint magic;
	void *pdev;
	atomic_t malloced;
	uint failed;
	uint bustype;
	bcm_mem_link_t *dbgmem_list;
};




uint32 g_assert_type = FALSE;

static int16 linuxbcmerrormap[] =
{	0, 			
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL,		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL, 		
	-E2BIG,			
	-E2BIG,			
	-EBUSY, 		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL, 		
	-EFAULT, 		
	-ENOMEM, 		
	-EOPNOTSUPP,		
	-EMSGSIZE,		
	-EINVAL,		
	-EPERM,			
	-ENOMEM, 		
	-EINVAL, 		
	-ERANGE, 		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL, 		
	-EINVAL,		
	-EIO,			
	-ENODEV,		
	-EINVAL,		
	-EIO,			
	-EIO,			
	-ENODEV,		
	-EINVAL,		
	-ENODATA,		



#if BCME_LAST != -42
#error "You need to add a OS error translation in the linuxbcmerrormap \
	for new error code defined in bcmutils.h"
#endif
};


int
osl_error(int bcmerror)
{
	if (bcmerror > 0)
		bcmerror = 0;
	else if (bcmerror < BCME_LAST)
		bcmerror = BCME_ERROR;

	
	return linuxbcmerrormap[-bcmerror];
}

extern uint8* dhd_os_prealloc(void *osh, int section, int size);

osl_t *
osl_attach(void *pdev, uint bustype, bool pkttag)
{
	osl_t *osh;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
	gfp_t flags;

	flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;
	osh = kmalloc(sizeof(osl_t), flags);
#else
	osh = kmalloc(sizeof(osl_t), GFP_ATOMIC);
#endif 
	ASSERT(osh);

	bzero(osh, sizeof(osl_t));

	
	ASSERT(ABS(BCME_LAST) == (ARRAYSIZE(linuxbcmerrormap) - 1));

	osh->magic = OS_HANDLE_MAGIC;
	atomic_set(&osh->malloced, 0);
	osh->failed = 0;
	osh->dbgmem_list = NULL;
	osh->pdev = pdev;
	osh->pub.pkttag = pkttag;
	osh->bustype = bustype;

	switch (bustype) {
		case PCI_BUS:
		case SI_BUS:
		case PCMCIA_BUS:
			osh->pub.mmbus = TRUE;
			break;
		case JTAG_BUS:
		case SDIO_BUS:
		case USB_BUS:
		case SPI_BUS:
		case RPC_BUS:
			osh->pub.mmbus = FALSE;
			break;
		default:
			ASSERT(FALSE);
			break;
	}

#if defined(CONFIG_DHD_USE_STATIC_BUF)
	if (!bcm_static_buf) {
		if (!(bcm_static_buf = (bcm_static_buf_t *)dhd_os_prealloc(osh, 3, STATIC_BUF_SIZE+
			STATIC_BUF_TOTAL_LEN))) {
			printk("can not alloc static buf!\n");
		}
		else
			printk("alloc static buf at %x!\n", (unsigned int)bcm_static_buf);

		sema_init(&bcm_static_buf->static_sem, 1);

		bcm_static_buf->buf_ptr = (unsigned char *)bcm_static_buf + STATIC_BUF_SIZE;
	}

	if (!bcm_static_skb) {
		int i;
		void *skb_buff_ptr = 0;
		bcm_static_skb = (bcm_static_pkt_t *)((char *)bcm_static_buf + 2048);
		skb_buff_ptr = dhd_os_prealloc(osh, 4, 0);

		bcopy(skb_buff_ptr, bcm_static_skb, sizeof(struct sk_buff *) * 16);
		for (i = 0; i < STATIC_PKT_MAX_NUM * 2; i++)
			bcm_static_skb->pkt_use[i] = 0;

		sema_init(&bcm_static_skb->osl_pkt_sem, 1);
	}
#endif

	return osh;
}

void
osl_detach(osl_t *osh)
{
	if (osh == NULL)
		return;

	ASSERT(osh->magic == OS_HANDLE_MAGIC);
	kfree(osh);
}

static struct sk_buff *osl_alloc_skb(unsigned int len)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)
	gfp_t flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;

	return __dev_alloc_skb(len, flags);
#else
	return dev_alloc_skb(len);
#endif
}

#ifdef CTFPOOL

void *
osl_ctfpool_add(osl_t *osh)
{
	struct sk_buff *skb;

	if ((osh == NULL) || (osh->ctfpool == NULL))
		return NULL;

	spin_lock_bh(&osh->ctfpool->lock);
	ASSERT(osh->ctfpool->curr_obj <= osh->ctfpool->max_obj);

	
	if (osh->ctfpool->curr_obj == osh->ctfpool->max_obj) {
		spin_unlock_bh(&osh->ctfpool->lock);
		return NULL;
	}

	
	skb = osl_alloc_skb(osh->ctfpool->obj_size);
	if (skb == NULL) {
		printf("%s: skb alloc of len %d failed\n", __FUNCTION__,
		       osh->ctfpool->obj_size);
		spin_unlock_bh(&osh->ctfpool->lock);
		return NULL;
	}

	
	skb->next = (struct sk_buff *)osh->ctfpool->head;
	osh->ctfpool->head = skb;
	osh->ctfpool->fast_frees++;
	osh->ctfpool->curr_obj++;

	
	CTFPOOLPTR(osh, skb) = (void *)osh->ctfpool;

	
	PKTFAST(osh, skb) = FASTBUF;

	spin_unlock_bh(&osh->ctfpool->lock);

	return skb;
}


void
osl_ctfpool_replenish(osl_t *osh, uint thresh)
{
	if ((osh == NULL) || (osh->ctfpool == NULL))
		return;

	
	while ((osh->ctfpool->refills > 0) && (thresh--)) {
		osl_ctfpool_add(osh);
		osh->ctfpool->refills--;
	}
}


int32
osl_ctfpool_init(osl_t *osh, uint numobj, uint size)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
	gfp_t flags;

	flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;
	osh->ctfpool = kmalloc(sizeof(ctfpool_t), flags);
#else
	osh->ctfpool = kmalloc(sizeof(ctfpool_t), GFP_ATOMIC);
#endif 
	ASSERT(osh->ctfpool);
	bzero(osh->ctfpool, sizeof(ctfpool_t));

	osh->ctfpool->max_obj = numobj;
	osh->ctfpool->obj_size = size;

	spin_lock_init(&osh->ctfpool->lock);

	while (numobj--) {
		if (!osl_ctfpool_add(osh))
			return -1;
		osh->ctfpool->fast_frees--;
	}

	return 0;
}


void
osl_ctfpool_cleanup(osl_t *osh)
{
	struct sk_buff *skb, *nskb;

	if ((osh == NULL) || (osh->ctfpool == NULL))
		return;

	spin_lock_bh(&osh->ctfpool->lock);

	skb = osh->ctfpool->head;

	while (skb != NULL) {
		nskb = skb->next;
		dev_kfree_skb(skb);
		skb = nskb;
		osh->ctfpool->curr_obj--;
	}

	ASSERT(osh->ctfpool->curr_obj == 0);
	osh->ctfpool->head = NULL;
	spin_unlock_bh(&osh->ctfpool->lock);

	kfree(osh->ctfpool);
	osh->ctfpool = NULL;
}

void
osl_ctfpool_stats(osl_t *osh, void *b)
{
	struct bcmstrbuf *bb;

	if ((osh == NULL) || (osh->ctfpool == NULL))
		return;

#ifdef CONFIG_DHD_USE_STATIC_BUF
	if (bcm_static_buf) {
		bcm_static_buf = 0;
	}
	if (bcm_static_skb) {
		bcm_static_skb = 0;
	}
#endif 

	bb = b;

	ASSERT((osh != NULL) && (bb != NULL));

	bcm_bprintf(bb, "max_obj %d obj_size %d curr_obj %d refills %d\n",
	            osh->ctfpool->max_obj, osh->ctfpool->obj_size,
	            osh->ctfpool->curr_obj, osh->ctfpool->refills);
	bcm_bprintf(bb, "fast_allocs %d fast_frees %d slow_allocs %d\n",
	            osh->ctfpool->fast_allocs, osh->ctfpool->fast_frees,
	            osh->ctfpool->slow_allocs);
}

static inline struct sk_buff *
osl_pktfastget(osl_t *osh, uint len)
{
	struct sk_buff *skb;

	
	if (osh->ctfpool == NULL)
		return NULL;

	spin_lock_bh(&osh->ctfpool->lock);
	if (osh->ctfpool->head == NULL) {
		ASSERT(osh->ctfpool->curr_obj == 0);
		osh->ctfpool->slow_allocs++;
		spin_unlock_bh(&osh->ctfpool->lock);
		return NULL;
	}

	ASSERT(len <= osh->ctfpool->obj_size);

	
	skb = (struct sk_buff *)osh->ctfpool->head;
	osh->ctfpool->head = (void *)skb->next;

	osh->ctfpool->fast_allocs++;
	osh->ctfpool->curr_obj--;
	ASSERT(CTFPOOLHEAD(osh, skb) == (struct sock *)osh->ctfpool->head);
	spin_unlock_bh(&osh->ctfpool->lock);

	
	skb->next = skb->prev = NULL;
	skb->data = skb->head + 16;
	skb->tail = skb->head + 16;

	skb->len = 0;
	skb->cloned = 0;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 14)
	skb->list = NULL;
#endif
	atomic_set(&skb->users, 1);

	return skb;
}
#endif


void * BCMFASTPATH
osl_pktget(osl_t *osh, uint len)
{
	struct sk_buff *skb;

#ifdef CTFPOOL
	skb = osl_pktfastget(osh, len);
	if ((skb != NULL) || ((skb = osl_alloc_skb(len)) != NULL)) {
#else
	if ((skb = osl_alloc_skb(len))) {
#endif
		skb_put(skb, len);
		skb->priority = 0;

		osh->pub.pktalloced++;
	}

	return ((void*) skb);
}

#ifdef CTFPOOL
static inline void
osl_pktfastfree(osl_t *osh, struct sk_buff *skb)
{
	ctfpool_t *ctfpool;

	ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb);
	ASSERT(ctfpool != NULL);

	
	spin_lock_bh(&ctfpool->lock);
	skb->next = (struct sk_buff *)ctfpool->head;
	ctfpool->head = (void *)skb;

	ctfpool->fast_frees++;
	ctfpool->curr_obj++;

	ASSERT(ctfpool->curr_obj <= ctfpool->max_obj);
	spin_unlock_bh(&ctfpool->lock);

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 14)
	skb->tstamp.tv.sec = 0;
#else
	skb->stamp.tv_sec = 0;
#endif

	
	skb->dev = NULL;
	skb->dst = NULL;
	memset(skb->cb, 0, sizeof(skb->cb));
	skb->ip_summed = 0;
	skb->destructor = NULL;
}
#endif 


void BCMFASTPATH
osl_pktfree(osl_t *osh, void *p, bool send)
{
	struct sk_buff *skb, *nskb;

	skb = (struct sk_buff*) p;

	if (send && osh->pub.tx_fn)
		osh->pub.tx_fn(osh->pub.tx_ctx, p, 0);

	
	while (skb) {
		nskb = skb->next;
		skb->next = NULL;


#ifdef CTFPOOL
		if (PKTISFAST(osh, skb))
			osl_pktfastfree(osh, skb);
		else {
#else 
		{
#endif 

			if (skb->destructor)
				
				dev_kfree_skb_any(skb);
			else
				
				dev_kfree_skb(skb);
		}

		osh->pub.pktalloced--;

		skb = nskb;
	}
}

#ifdef CONFIG_DHD_USE_STATIC_BUF
void *
osl_pktget_static(osl_t *osh, uint len)
{
	int i;
	struct sk_buff *skb;

	if (!bcm_static_skb || (len > (PAGE_SIZE * 2))) {
		printk("%s: attempt to allocate huge packet (0x%x)\n", __FUNCTION__, len);
		return osl_pktget(osh, len);
	}

	down(&bcm_static_skb->osl_pkt_sem);

	if (len <= PAGE_SIZE) {
		for (i = 0; i < STATIC_PKT_MAX_NUM; i++) {
			if (bcm_static_skb->pkt_use[i] == 0)
				break;
		}

		if (i != STATIC_PKT_MAX_NUM) {
			bcm_static_skb->pkt_use[i] = 1;
			skb = bcm_static_skb->skb_4k[i];
			skb->tail = skb->data + len;
			skb->len = len;
			up(&bcm_static_skb->osl_pkt_sem);
			return skb;
		}
	}


	for (i = 0; i < STATIC_PKT_MAX_NUM; i++) {
		if (bcm_static_skb->pkt_use[i+STATIC_PKT_MAX_NUM] == 0)
			break;
	}

	if (i != STATIC_PKT_MAX_NUM) {
		bcm_static_skb->pkt_use[i+STATIC_PKT_MAX_NUM] = 1;
		skb = bcm_static_skb->skb_8k[i];
		skb->tail = skb->data + len;
		skb->len = len;
		up(&bcm_static_skb->osl_pkt_sem);
		return skb;
	}

	up(&bcm_static_skb->osl_pkt_sem);
	printk("%s: all static pkt in use!\n", __FUNCTION__);
	return osl_pktget(osh, len);
}

void
osl_pktfree_static(osl_t *osh, void *p, bool send)
{
	int i;

	if (!bcm_static_skb) {
		osl_pktfree(osh, p, send);
		return;
	}

	down(&bcm_static_skb->osl_pkt_sem);
	for (i = 0; i < STATIC_PKT_MAX_NUM; i++) {
		if (p == bcm_static_skb->skb_4k[i]) {
			bcm_static_skb->pkt_use[i] = 0;
			up(&bcm_static_skb->osl_pkt_sem);
			return;
		}
	}

	for (i = 0; i < STATIC_PKT_MAX_NUM; i++) {
		if (p == bcm_static_skb->skb_8k[i]) {
			bcm_static_skb->pkt_use[i + STATIC_PKT_MAX_NUM] = 0;
			up(&bcm_static_skb->osl_pkt_sem);
			return;
		}
	}
	up(&bcm_static_skb->osl_pkt_sem);

	osl_pktfree(osh, p, send);
	return;
}
#endif 

uint32
osl_pci_read_config(osl_t *osh, uint offset, uint size)
{
	uint val = 0;
	uint retry = PCI_CFG_RETRY;

	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));

	
	ASSERT(size == 4);

	do {
		pci_read_config_dword(osh->pdev, offset, &val);
		if (val != 0xffffffff)
			break;
	} while (retry--);


	return (val);
}

void
osl_pci_write_config(osl_t *osh, uint offset, uint size, uint val)
{
	uint retry = PCI_CFG_RETRY;

	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));

	
	ASSERT(size == 4);

	do {
		pci_write_config_dword(osh->pdev, offset, val);
		if (offset != PCI_BAR0_WIN)
			break;
		if (osl_pci_read_config(osh, offset, size) == val)
			break;
	} while (retry--);

}


uint
osl_pci_bus(osl_t *osh)
{
	ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);

	return ((struct pci_dev *)osh->pdev)->bus->number;
}


uint
osl_pci_slot(osl_t *osh)
{
	ASSERT(osh && (osh->magic == OS_HANDLE_MAGIC) && osh->pdev);

	return PCI_SLOT(((struct pci_dev *)osh->pdev)->devfn);
}

static void
osl_pcmcia_attr(osl_t *osh, uint offset, char *buf, int size, bool write)
{
}

void
osl_pcmcia_read_attr(osl_t *osh, uint offset, void *buf, int size)
{
	osl_pcmcia_attr(osh, offset, (char *) buf, size, FALSE);
}

void
osl_pcmcia_write_attr(osl_t *osh, uint offset, void *buf, int size)
{
	osl_pcmcia_attr(osh, offset, (char *) buf, size, TRUE);
}

void *
osl_malloc(osl_t *osh, uint size)
{
	void *addr;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
	gfp_t flags;

	
	if (osh)
		ASSERT(osh->magic == OS_HANDLE_MAGIC);

	flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;
	if ((addr = kmalloc(size, flags)) == NULL) {
#else
	if ((addr = kmalloc(size, GFP_ATOMIC)) == NULL) {
#endif 
		if (osh)
			osh->failed++;
		return (NULL);
	}
	if (osh)
		atomic_add(size, &osh->malloced);

	return (addr);
}

void
osl_mfree(osl_t *osh, void *addr, uint size)
{
	if (osh) {
		ASSERT(osh->magic == OS_HANDLE_MAGIC);
		atomic_sub(size, &osh->malloced);
	}
	kfree(addr);
}

uint
osl_malloced(osl_t *osh)
{
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	return (atomic_read(&osh->malloced));
}

uint
osl_malloc_failed(osl_t *osh)
{
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	return (osh->failed);
}



uint
osl_dma_consistent_align(void)
{
	return (PAGE_SIZE);
}

void*
osl_dma_alloc_consistent(osl_t *osh, uint size, uint16 align_bits, uint *alloced, ulong *pap)
{
	uint16 align = (1 << align_bits);
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));

	if (!ISALIGNED(DMA_CONSISTENT_ALIGN, align))
		size += align;
	*alloced = size;

	return (pci_alloc_consistent(osh->pdev, size, (dma_addr_t*)pap));
}

void
osl_dma_free_consistent(osl_t *osh, void *va, uint size, ulong pa)
{
	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));

	pci_free_consistent(osh->pdev, size, va, (dma_addr_t)pa);
}

uint BCMFASTPATH
osl_dma_map(osl_t *osh, void *va, uint size, int direction)
{
	int dir;

	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
	return (pci_map_single(osh->pdev, va, size, dir));
}

void BCMFASTPATH
osl_dma_unmap(osl_t *osh, uint pa, uint size, int direction)
{
	int dir;

	ASSERT((osh && (osh->magic == OS_HANDLE_MAGIC)));
	dir = (direction == DMA_TX)? PCI_DMA_TODEVICE: PCI_DMA_FROMDEVICE;
	pci_unmap_single(osh->pdev, (uint32)pa, size, dir);
}

#if defined(BCMASSERT_LOG)
void
osl_assert(char *exp, char *file, int line)
{
	char tempbuf[256];
	char *basename;

	basename = strrchr(file, '/');
	
	if (basename)
		basename++;

	if (!basename)
		basename = file;

#ifdef BCMASSERT_LOG
	snprintf(tempbuf, 64, "\"%s\": file \"%s\", line %d\n",
		exp, basename, line);

	bcm_assert_log(tempbuf);
#endif 


}
#endif 

void
osl_delay(uint usec)
{
	uint d;

	while (usec > 0) {
		d = MIN(usec, 1000);
		udelay(d);
		usec -= d;
	}
}



void *
osl_pktdup(osl_t *osh, void *skb)
{
	void * p;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
	gfp_t flags;

	flags = (in_atomic()) ? GFP_ATOMIC : GFP_KERNEL;
	if ((p = skb_clone((struct sk_buff *)skb, flags)) == NULL)
#else
	if ((p = skb_clone((struct sk_buff*)skb, GFP_ATOMIC)) == NULL)
#endif 
		return NULL;

#ifdef CTFPOOL
	if (PKTISFAST(osh, skb)) {
		ctfpool_t *ctfpool;

		
		ctfpool = (ctfpool_t *)CTFPOOLPTR(osh, skb);
		ASSERT(ctfpool != NULL);
		PKTCLRFAST(osh, p);
		PKTCLRFAST(osh, skb);
		ctfpool->refills++;
	}
#endif 

	
	if (osh->pub.pkttag)
		bzero((void*)((struct sk_buff *)p)->cb, OSL_PKTTAG_SZ);

	
	osh->pub.pktalloced++;
	return (p);
}







void *
osl_os_open_image(char *filename)
{
	struct file *fp;

	fp = filp_open(filename, O_RDONLY, 0);
	
	 if (IS_ERR(fp))
		 fp = NULL;

	 return fp;
}

int
osl_os_get_image_block(char *buf, int len, void *image)
{
	struct file *fp = (struct file *)image;
	int rdlen;

	if (!image)
		return 0;

	rdlen = kernel_read(fp, fp->f_pos, buf, len);
	if (rdlen > 0)
		fp->f_pos += rdlen;

	return rdlen;
}

void
osl_os_close_image(void *image)
{
	if (image)
		filp_close((struct file *)image, NULL);
}