summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/hostap/hostap_download.c
blob: 705fe668b969819761584dbd25276eed403f756d (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
static int prism2_enable_aux_port(struct net_device *dev, int enable)
{
	u16 val, reg;
	int i, tries;
	unsigned long flags;
	struct hostap_interface *iface;
	local_info_t *local;

	iface = netdev_priv(dev);
	local = iface->local;

	if (local->no_pri) {
		if (enable) {
			PDEBUG(DEBUG_EXTRA2, "%s: no PRI f/w - assuming Aux "
			       "port is already enabled\n", dev->name);
		}
		return 0;
	}

	spin_lock_irqsave(&local->cmdlock, flags);

	/* wait until busy bit is clear */
	tries = HFA384X_CMD_BUSY_TIMEOUT;
	while (HFA384X_INW(HFA384X_CMD_OFF) & HFA384X_CMD_BUSY && tries > 0) {
		tries--;
		udelay(1);
	}
	if (tries == 0) {
		reg = HFA384X_INW(HFA384X_CMD_OFF);
		spin_unlock_irqrestore(&local->cmdlock, flags);
		printk("%s: prism2_enable_aux_port - timeout - reg=0x%04x\n",
		       dev->name, reg);
		return -ETIMEDOUT;
	}

	val = HFA384X_INW(HFA384X_CONTROL_OFF);

	if (enable) {
		HFA384X_OUTW(HFA384X_AUX_MAGIC0, HFA384X_PARAM0_OFF);
		HFA384X_OUTW(HFA384X_AUX_MAGIC1, HFA384X_PARAM1_OFF);
		HFA384X_OUTW(HFA384X_AUX_MAGIC2, HFA384X_PARAM2_OFF);

		if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_DISABLED)
			printk("prism2_enable_aux_port: was not disabled!?\n");
		val &= ~HFA384X_AUX_PORT_MASK;
		val |= HFA384X_AUX_PORT_ENABLE;
	} else {
		HFA384X_OUTW(0, HFA384X_PARAM0_OFF);
		HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
		HFA384X_OUTW(0, HFA384X_PARAM2_OFF);

		if ((val & HFA384X_AUX_PORT_MASK) != HFA384X_AUX_PORT_ENABLED)
			printk("prism2_enable_aux_port: was not enabled!?\n");
		val &= ~HFA384X_AUX_PORT_MASK;
		val |= HFA384X_AUX_PORT_DISABLE;
	}
	HFA384X_OUTW(val, HFA384X_CONTROL_OFF);

	udelay(5);

	i = 10000;
	while (i > 0) {
		val = HFA384X_INW(HFA384X_CONTROL_OFF);
		val &= HFA384X_AUX_PORT_MASK;

		if ((enable && val == HFA384X_AUX_PORT_ENABLED) ||
		    (!enable && val == HFA384X_AUX_PORT_DISABLED))
			break;

		udelay(10);
		i--;
	}

	spin_unlock_irqrestore(&local->cmdlock, flags);

	if (i == 0) {
		printk("prism2_enable_aux_port(%d) timed out\n",
		       enable);
		return -ETIMEDOUT;
	}

	return 0;
}


static int hfa384x_from_aux(struct net_device *dev, unsigned int addr, int len,
			    void *buf)
{
	u16 page, offset;
	if (addr & 1 || len & 1)
		return -1;

	page = addr >> 7;
	offset = addr & 0x7f;

	HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
	HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);

	udelay(5);

#ifdef PRISM2_PCI
	{
		__le16 *pos = (__le16 *) buf;
		while (len > 0) {
			*pos++ = HFA384X_INW_DATA(HFA384X_AUXDATA_OFF);
			len -= 2;
		}
	}
#else /* PRISM2_PCI */
	HFA384X_INSW(HFA384X_AUXDATA_OFF, buf, len / 2);
#endif /* PRISM2_PCI */

	return 0;
}


static int hfa384x_to_aux(struct net_device *dev, unsigned int addr, int len,
			  void *buf)
{
	u16 page, offset;
	if (addr & 1 || len & 1)
		return -1;

	page = addr >> 7;
	offset = addr & 0x7f;

	HFA384X_OUTW(page, HFA384X_AUXPAGE_OFF);
	HFA384X_OUTW(offset, HFA384X_AUXOFFSET_OFF);

	udelay(5);

#ifdef PRISM2_PCI
	{
		__le16 *pos = (__le16 *) buf;
		while (len > 0) {
			HFA384X_OUTW_DATA(*pos++, HFA384X_AUXDATA_OFF);
			len -= 2;
		}
	}
#else /* PRISM2_PCI */
	HFA384X_OUTSW(HFA384X_AUXDATA_OFF, buf, len / 2);
#endif /* PRISM2_PCI */

	return 0;
}


static int prism2_pda_ok(u8 *buf)
{
	__le16 *pda = (__le16 *) buf;
	int pos;
	u16 len, pdr;

	if (buf[0] == 0xff && buf[1] == 0x00 && buf[2] == 0xff &&
	    buf[3] == 0x00)
		return 0;

	pos = 0;
	while (pos + 1 < PRISM2_PDA_SIZE / 2) {
		len = le16_to_cpu(pda[pos]);
		pdr = le16_to_cpu(pda[pos + 1]);
		if (len == 0 || pos + len > PRISM2_PDA_SIZE / 2)
			return 0;

		if (pdr == 0x0000 && len == 2) {
			/* PDA end found */
			return 1;
		}

		pos += len + 1;
	}

	return 0;
}


#define prism2_download_aux_dump_npages 65536

struct prism2_download_aux_dump {
	local_info_t *local;
	u16 page[0x80];
};

static int prism2_download_aux_dump_proc_show(struct seq_file *m, void *v)
{
	struct prism2_download_aux_dump *ctx = m->private;

	hfa384x_from_aux(ctx->local->dev, (unsigned long)v - 1, 0x80, ctx->page);
	seq_write(m, ctx->page, 0x80);
	return 0;
}

static void *prism2_download_aux_dump_proc_start(struct seq_file *m, loff_t *_pos)
{
	struct prism2_download_aux_dump *ctx = m->private;
	prism2_enable_aux_port(ctx->local->dev, 1);
	if (*_pos >= prism2_download_aux_dump_npages)
		return NULL;
	return (void *)((unsigned long)*_pos + 1);
}

static void *prism2_download_aux_dump_proc_next(struct seq_file *m, void *v, loff_t *_pos)
{
	++*_pos;
	if (*_pos >= prism2_download_aux_dump_npages)
		return NULL;
	return (void *)((unsigned long)*_pos + 1);
}

static void prism2_download_aux_dump_proc_stop(struct seq_file *m, void *v)
{
	struct prism2_download_aux_dump *ctx = m->private;
	prism2_enable_aux_port(ctx->local->dev, 0);
}

static const struct seq_operations prism2_download_aux_dump_proc_seqops = {
	.start	= prism2_download_aux_dump_proc_start,
	.next	= prism2_download_aux_dump_proc_next,
	.stop	= prism2_download_aux_dump_proc_stop,
	.show	= prism2_download_aux_dump_proc_show,
};

static int prism2_download_aux_dump_proc_open(struct inode *inode, struct file *file)
{
	int ret = seq_open_private(file, &prism2_download_aux_dump_proc_seqops,
				   sizeof(struct prism2_download_aux_dump));
	if (ret == 0) {
		struct seq_file *m = file->private_data;
		m->private = PDE_DATA(inode);
	}
	return ret;
}

static const struct file_operations prism2_download_aux_dump_proc_fops = {
	.open		= prism2_download_aux_dump_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release_private,
};


static u8 * prism2_read_pda(struct net_device *dev)
{
	u8 *buf;
	int res, i, found = 0;
#define NUM_PDA_ADDRS 4
	unsigned int pda_addr[NUM_PDA_ADDRS] = {
		0x7f0000 /* others than HFA3841 */,
		0x3f0000 /* HFA3841 */,
		0x390000 /* apparently used in older cards */,
		0x7f0002 /* Intel PRO/Wireless 2011B (PCI) */,
	};

	buf = kmalloc(PRISM2_PDA_SIZE, GFP_KERNEL);
	if (buf == NULL)
		return NULL;

	/* Note: wlan card should be in initial state (just after init cmd)
	 * and no other operations should be performed concurrently. */

	prism2_enable_aux_port(dev, 1);

	for (i = 0; i < NUM_PDA_ADDRS; i++) {
		PDEBUG(DEBUG_EXTRA2, "%s: trying to read PDA from 0x%08x",
		       dev->name, pda_addr[i]);
		res = hfa384x_from_aux(dev, pda_addr[i], PRISM2_PDA_SIZE, buf);
		if (res)
			continue;
		if (res == 0 && prism2_pda_ok(buf)) {
			PDEBUG2(DEBUG_EXTRA2, ": OK\n");
			found = 1;
			break;
		} else {
			PDEBUG2(DEBUG_EXTRA2, ": failed\n");
		}
	}

	prism2_enable_aux_port(dev, 0);

	if (!found) {
		printk(KERN_DEBUG "%s: valid PDA not found\n", dev->name);
		kfree(buf);
		buf = NULL;
	}

	return buf;
}


static int prism2_download_volatile(local_info_t *local,
				    struct prism2_download_data *param)
{
	struct net_device *dev = local->dev;
	int ret = 0, i;
	u16 param0, param1;

	if (local->hw_downloading) {
		printk(KERN_WARNING "%s: Already downloading - aborting new "
		       "request\n", dev->name);
		return -1;
	}

	local->hw_downloading = 1;
	if (local->pri_only) {
		hfa384x_disable_interrupts(dev);
	} else {
		prism2_hw_shutdown(dev, 0);

		if (prism2_hw_init(dev, 0)) {
			printk(KERN_WARNING "%s: Could not initialize card for"
			       " download\n", dev->name);
			ret = -1;
			goto out;
		}
	}

	if (prism2_enable_aux_port(dev, 1)) {
		printk(KERN_WARNING "%s: Could not enable AUX port\n",
		       dev->name);
		ret = -1;
		goto out;
	}

	param0 = param->start_addr & 0xffff;
	param1 = param->start_addr >> 16;

	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
			     (HFA384X_PROGMODE_ENABLE_VOLATILE << 8),
			     param0)) {
		printk(KERN_WARNING "%s: Download command execution failed\n",
		       dev->name);
		ret = -1;
		goto out;
	}

	for (i = 0; i < param->num_areas; i++) {
		PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
		       dev->name, param->data[i].len, param->data[i].addr);
		if (hfa384x_to_aux(dev, param->data[i].addr,
				   param->data[i].len, param->data[i].data)) {
			printk(KERN_WARNING "%s: RAM download at 0x%08x "
			       "(len=%d) failed\n", dev->name,
			       param->data[i].addr, param->data[i].len);
			ret = -1;
			goto out;
		}
	}

	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);
	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
	if (hfa384x_cmd_no_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
				(HFA384X_PROGMODE_DISABLE << 8), param0)) {
		printk(KERN_WARNING "%s: Download command execution failed\n",
		       dev->name);
		ret = -1;
		goto out;
	}
	/* ProgMode disable causes the hardware to restart itself from the
	 * given starting address. Give hw some time and ACK command just in
	 * case restart did not happen. */
	mdelay(5);
	HFA384X_OUTW(HFA384X_EV_CMD, HFA384X_EVACK_OFF);

	if (prism2_enable_aux_port(dev, 0)) {
		printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
		       dev->name);
		/* continue anyway.. restart should have taken care of this */
	}

	mdelay(5);
	local->hw_downloading = 0;
	if (prism2_hw_config(dev, 2)) {
		printk(KERN_WARNING "%s: Card configuration after RAM "
		       "download failed\n", dev->name);
		ret = -1;
		goto out;
	}

 out:
	local->hw_downloading = 0;
	return ret;
}


static int prism2_enable_genesis(local_info_t *local, int hcr)
{
	struct net_device *dev = local->dev;
	u8 initseq[4] = { 0x00, 0xe1, 0xa1, 0xff };
	u8 readbuf[4];

	printk(KERN_DEBUG "%s: test Genesis mode with HCR 0x%02x\n",
	       dev->name, hcr);
	local->func->cor_sreset(local);
	hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
	local->func->genesis_reset(local, hcr);

	/* Readback test */
	hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);
	hfa384x_to_aux(dev, 0x7e0038, sizeof(initseq), initseq);
	hfa384x_from_aux(dev, 0x7e0038, sizeof(readbuf), readbuf);

	if (memcmp(initseq, readbuf, sizeof(initseq)) == 0) {
		printk(KERN_DEBUG "Readback test succeeded, HCR 0x%02x\n",
		       hcr);
		return 0;
	} else {
		printk(KERN_DEBUG "Readback test failed, HCR 0x%02x "
		       "write %02x %02x %02x %02x read %02x %02x %02x %02x\n",
		       hcr, initseq[0], initseq[1], initseq[2], initseq[3],
		       readbuf[0], readbuf[1], readbuf[2], readbuf[3]);
		return 1;
	}
}


static int prism2_get_ram_size(local_info_t *local)
{
	int ret;

	/* Try to enable genesis mode; 0x1F for x8 SRAM or 0x0F for x16 SRAM */
	if (prism2_enable_genesis(local, 0x1f) == 0)
		ret = 8;
	else if (prism2_enable_genesis(local, 0x0f) == 0)
		ret = 16;
	else
		ret = -1;

	/* Disable genesis mode */
	local->func->genesis_reset(local, ret == 16 ? 0x07 : 0x17);

	return ret;
}


static int prism2_download_genesis(local_info_t *local,
				   struct prism2_download_data *param)
{
	struct net_device *dev = local->dev;
	int ram16 = 0, i;
	int ret = 0;

	if (local->hw_downloading) {
		printk(KERN_WARNING "%s: Already downloading - aborting new "
		       "request\n", dev->name);
		return -EBUSY;
	}

	if (!local->func->genesis_reset || !local->func->cor_sreset) {
		printk(KERN_INFO "%s: Genesis mode downloading not supported "
		       "with this hwmodel\n", dev->name);
		return -EOPNOTSUPP;
	}

	local->hw_downloading = 1;

	if (prism2_enable_aux_port(dev, 1)) {
		printk(KERN_DEBUG "%s: failed to enable AUX port\n",
		       dev->name);
		ret = -EIO;
		goto out;
	}

	if (local->sram_type == -1) {
		/* 0x1F for x8 SRAM or 0x0F for x16 SRAM */
		if (prism2_enable_genesis(local, 0x1f) == 0) {
			ram16 = 0;
			PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x8 "
			       "SRAM\n", dev->name);
		} else if (prism2_enable_genesis(local, 0x0f) == 0) {
			ram16 = 1;
			PDEBUG(DEBUG_EXTRA2, "%s: Genesis mode OK using x16 "
			       "SRAM\n", dev->name);
		} else {
			printk(KERN_DEBUG "%s: Could not initiate genesis "
			       "mode\n", dev->name);
			ret = -EIO;
			goto out;
		}
	} else {
		if (prism2_enable_genesis(local, local->sram_type == 8 ?
					  0x1f : 0x0f)) {
			printk(KERN_DEBUG "%s: Failed to set Genesis "
			       "mode (sram_type=%d)\n", dev->name,
			       local->sram_type);
			ret = -EIO;
			goto out;
		}
		ram16 = local->sram_type != 8;
	}

	for (i = 0; i < param->num_areas; i++) {
		PDEBUG(DEBUG_EXTRA2, "%s: Writing %d bytes at 0x%08x\n",
		       dev->name, param->data[i].len, param->data[i].addr);
		if (hfa384x_to_aux(dev, param->data[i].addr,
				   param->data[i].len, param->data[i].data)) {
			printk(KERN_WARNING "%s: RAM download at 0x%08x "
			       "(len=%d) failed\n", dev->name,
			       param->data[i].addr, param->data[i].len);
			ret = -EIO;
			goto out;
		}
	}

	PDEBUG(DEBUG_EXTRA2, "Disable genesis mode\n");
	local->func->genesis_reset(local, ram16 ? 0x07 : 0x17);
	if (prism2_enable_aux_port(dev, 0)) {
		printk(KERN_DEBUG "%s: Failed to disable AUX port\n",
		       dev->name);
	}

	mdelay(5);
	local->hw_downloading = 0;

	PDEBUG(DEBUG_EXTRA2, "Trying to initialize card\n");
	/*
	 * Make sure the INIT command does not generate a command completion
	 * event by disabling interrupts.
	 */
	hfa384x_disable_interrupts(dev);
	if (prism2_hw_init(dev, 1)) {
		printk(KERN_DEBUG "%s: Initialization after genesis mode "
		       "download failed\n", dev->name);
		ret = -EIO;
		goto out;
	}

	PDEBUG(DEBUG_EXTRA2, "Card initialized - running PRI only\n");
	if (prism2_hw_init2(dev, 1)) {
		printk(KERN_DEBUG "%s: Initialization(2) after genesis mode "
		       "download failed\n", dev->name);
		ret = -EIO;
		goto out;
	}

 out:
	local->hw_downloading = 0;
	return ret;
}


#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
/* Note! Non-volatile downloading functionality has not yet been tested
 * thoroughly and it may corrupt flash image and effectively kill the card that
 * is being updated. You have been warned. */

static inline int prism2_download_block(struct net_device *dev,
					u32 addr, u8 *data,
					u32 bufaddr, int rest_len)
{
	u16 param0, param1;
	int block_len;

	block_len = rest_len < 4096 ? rest_len : 4096;

	param0 = addr & 0xffff;
	param1 = addr >> 16;

	HFA384X_OUTW(block_len, HFA384X_PARAM2_OFF);
	HFA384X_OUTW(param1, HFA384X_PARAM1_OFF);

	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
			     (HFA384X_PROGMODE_ENABLE_NON_VOLATILE << 8),
			     param0)) {
		printk(KERN_WARNING "%s: Flash download command execution "
		       "failed\n", dev->name);
		return -1;
	}

	if (hfa384x_to_aux(dev, bufaddr, block_len, data)) {
		printk(KERN_WARNING "%s: flash download at 0x%08x "
		       "(len=%d) failed\n", dev->name, addr, block_len);
		return -1;
	}

	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
	HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
			     (HFA384X_PROGMODE_PROGRAM_NON_VOLATILE << 8),
			     0)) {
		printk(KERN_WARNING "%s: Flash write command execution "
		       "failed\n", dev->name);
		return -1;
	}

	return block_len;
}


static int prism2_download_nonvolatile(local_info_t *local,
				       struct prism2_download_data *dl)
{
	struct net_device *dev = local->dev;
	int ret = 0, i;
	struct {
		__le16 page;
		__le16 offset;
		__le16 len;
	} dlbuffer;
	u32 bufaddr;

	if (local->hw_downloading) {
		printk(KERN_WARNING "%s: Already downloading - aborting new "
		       "request\n", dev->name);
		return -1;
	}

	ret = local->func->get_rid(dev, HFA384X_RID_DOWNLOADBUFFER,
				   &dlbuffer, 6, 0);

	if (ret < 0) {
		printk(KERN_WARNING "%s: Could not read download buffer "
		       "parameters\n", dev->name);
		goto out;
	}

	printk(KERN_DEBUG "Download buffer: %d bytes at 0x%04x:0x%04x\n",
	       le16_to_cpu(dlbuffer.len),
	       le16_to_cpu(dlbuffer.page),
	       le16_to_cpu(dlbuffer.offset));

	bufaddr = (le16_to_cpu(dlbuffer.page) << 7) + le16_to_cpu(dlbuffer.offset);

	local->hw_downloading = 1;

	if (!local->pri_only) {
		prism2_hw_shutdown(dev, 0);

		if (prism2_hw_init(dev, 0)) {
			printk(KERN_WARNING "%s: Could not initialize card for"
			       " download\n", dev->name);
			ret = -1;
			goto out;
		}
	}

	hfa384x_disable_interrupts(dev);

	if (prism2_enable_aux_port(dev, 1)) {
		printk(KERN_WARNING "%s: Could not enable AUX port\n",
		       dev->name);
		ret = -1;
		goto out;
	}

	printk(KERN_DEBUG "%s: starting flash download\n", dev->name);
	for (i = 0; i < dl->num_areas; i++) {
		int rest_len = dl->data[i].len;
		int data_off = 0;

		while (rest_len > 0) {
			int block_len;

			block_len = prism2_download_block(
				dev, dl->data[i].addr + data_off,
				dl->data[i].data + data_off, bufaddr,
				rest_len);

			if (block_len < 0) {
				ret = -1;
				goto out;
			}

			rest_len -= block_len;
			data_off += block_len;
		}
	}

	HFA384X_OUTW(0, HFA384X_PARAM1_OFF);
	HFA384X_OUTW(0, HFA384X_PARAM2_OFF);
	if (hfa384x_cmd_wait(dev, HFA384X_CMDCODE_DOWNLOAD |
				(HFA384X_PROGMODE_DISABLE << 8), 0)) {
		printk(KERN_WARNING "%s: Download command execution failed\n",
		       dev->name);
		ret = -1;
		goto out;
	}

	if (prism2_enable_aux_port(dev, 0)) {
		printk(KERN_DEBUG "%s: Disabling AUX port failed\n",
		       dev->name);
		/* continue anyway.. restart should have taken care of this */
	}

	mdelay(5);

	local->func->hw_reset(dev);
	local->hw_downloading = 0;
	if (prism2_hw_config(dev, 2)) {
		printk(KERN_WARNING "%s: Card configuration after flash "
		       "download failed\n", dev->name);
		ret = -1;
	} else {
		printk(KERN_INFO "%s: Card initialized successfully after "
		       "flash download\n", dev->name);
	}

 out:
	local->hw_downloading = 0;
	return ret;
}
#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */


static void prism2_download_free_data(struct prism2_download_data *dl)
{
	int i;

	if (dl == NULL)
		return;

	for (i = 0; i < dl->num_areas; i++)
		kfree(dl->data[i].data);
	kfree(dl);
}


static int prism2_download(local_info_t *local,
			   struct prism2_download_param *param)
{
	int ret = 0;
	int i;
	u32 total_len = 0;
	struct prism2_download_data *dl = NULL;

	printk(KERN_DEBUG "prism2_download: dl_cmd=%d start_addr=0x%08x "
	       "num_areas=%d\n",
	       param->dl_cmd, param->start_addr, param->num_areas);

	if (param->num_areas > 100) {
		ret = -EINVAL;
		goto out;
	}

	dl = kzalloc(sizeof(*dl) + param->num_areas *
		     sizeof(struct prism2_download_data_area), GFP_KERNEL);
	if (dl == NULL) {
		ret = -ENOMEM;
		goto out;
	}
	dl->dl_cmd = param->dl_cmd;
	dl->start_addr = param->start_addr;
	dl->num_areas = param->num_areas;
	for (i = 0; i < param->num_areas; i++) {
		PDEBUG(DEBUG_EXTRA2,
		       "  area %d: addr=0x%08x len=%d ptr=0x%p\n",
		       i, param->data[i].addr, param->data[i].len,
		       param->data[i].ptr);

		dl->data[i].addr = param->data[i].addr;
		dl->data[i].len = param->data[i].len;

		total_len += param->data[i].len;
		if (param->data[i].len > PRISM2_MAX_DOWNLOAD_AREA_LEN ||
		    total_len > PRISM2_MAX_DOWNLOAD_LEN) {
			ret = -E2BIG;
			goto out;
		}

		dl->data[i].data = kmalloc(dl->data[i].len, GFP_KERNEL);
		if (dl->data[i].data == NULL) {
			ret = -ENOMEM;
			goto out;
		}

		if (copy_from_user(dl->data[i].data, param->data[i].ptr,
				   param->data[i].len)) {
			ret = -EFAULT;
			goto out;
		}
	}

	switch (param->dl_cmd) {
	case PRISM2_DOWNLOAD_VOLATILE:
	case PRISM2_DOWNLOAD_VOLATILE_PERSISTENT:
		ret = prism2_download_volatile(local, dl);
		break;
	case PRISM2_DOWNLOAD_VOLATILE_GENESIS:
	case PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT:
		ret = prism2_download_genesis(local, dl);
		break;
	case PRISM2_DOWNLOAD_NON_VOLATILE:
#ifdef PRISM2_NON_VOLATILE_DOWNLOAD
		ret = prism2_download_nonvolatile(local, dl);
#else /* PRISM2_NON_VOLATILE_DOWNLOAD */
		printk(KERN_INFO "%s: non-volatile downloading not enabled\n",
		       local->dev->name);
		ret = -EOPNOTSUPP;
#endif /* PRISM2_NON_VOLATILE_DOWNLOAD */
		break;
	default:
		printk(KERN_DEBUG "%s: unsupported download command %d\n",
		       local->dev->name, param->dl_cmd);
		ret = -EINVAL;
		break;
	}

 out:
	if (ret == 0 && dl &&
	    param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_GENESIS_PERSISTENT) {
		prism2_download_free_data(local->dl_pri);
		local->dl_pri = dl;
	} else if (ret == 0 && dl &&
		   param->dl_cmd == PRISM2_DOWNLOAD_VOLATILE_PERSISTENT) {
		prism2_download_free_data(local->dl_sec);
		local->dl_sec = dl;
	} else
		prism2_download_free_data(dl);

	return ret;
}