summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/orinoco/hermes_dld.c
blob: a3eefe109df451c5089c8608b11978a268a228d7 (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
/*
 * Hermes download helper.
 *
 * This helper:
 *  - is capable of writing to the volatile area of the hermes device
 *  - is currently not capable of writing to non-volatile areas
 *  - provide helpers to identify and update plugin data
 *  - is not capable of interpreting a fw image directly. That is up to
 *    the main card driver.
 *  - deals with Hermes I devices. It can probably be modified to deal
 *    with Hermes II devices
 *
 * Copyright (C) 2007, David Kilroy
 *
 * Plug data code slightly modified from spectrum_cs driver
 *    Copyright (C) 2002-2005 Pavel Roskin <proski@gnu.org>
 * Portions based on information in wl_lkm_718 Agere driver
 *    COPYRIGHT (C) 2001-2004 by Agere Systems Inc. All Rights Reserved
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License
 * at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and
 * limitations under the License.
 *
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License version 2 (the "GPL"), in
 * which case the provisions of the GPL are applicable instead of the
 * above.  If you wish to allow the use of your version of this file
 * only under the terms of the GPL and not to allow others to use your
 * version of this file under the MPL, indicate your decision by
 * deleting the provisions above and replace them with the notice and
 * other provisions required by the GPL.  If you do not delete the
 * provisions above, a recipient may use your version of this file
 * under either the MPL or the GPL.
 */

#include <linux/module.h>
#include <linux/delay.h>
#include "hermes.h"
#include "hermes_dld.h"

#define PFX "hermes_dld: "

/*
 * AUX port access.  To unlock the AUX port write the access keys to the
 * PARAM0-2 registers, then write HERMES_AUX_ENABLE to the HERMES_CONTROL
 * register.  Then read it and make sure it's HERMES_AUX_ENABLED.
 */
#define HERMES_AUX_ENABLE	0x8000	/* Enable auxiliary port access */
#define HERMES_AUX_DISABLE	0x4000	/* Disable to auxiliary port access */
#define HERMES_AUX_ENABLED	0xC000	/* Auxiliary port is open */
#define HERMES_AUX_DISABLED	0x0000	/* Auxiliary port is closed */

#define HERMES_AUX_PW0	0xFE01
#define HERMES_AUX_PW1	0xDC23
#define HERMES_AUX_PW2	0xBA45

/* HERMES_CMD_DOWNLD */
#define HERMES_PROGRAM_DISABLE             (0x0000 | HERMES_CMD_DOWNLD)
#define HERMES_PROGRAM_ENABLE_VOLATILE     (0x0100 | HERMES_CMD_DOWNLD)
#define HERMES_PROGRAM_ENABLE_NON_VOLATILE (0x0200 | HERMES_CMD_DOWNLD)
#define HERMES_PROGRAM_NON_VOLATILE        (0x0300 | HERMES_CMD_DOWNLD)

/* End markers used in dblocks */
#define PDI_END		0x00000000	/* End of PDA */
#define BLOCK_END	0xFFFFFFFF	/* Last image block */
#define TEXT_END	0x1A		/* End of text header */

/* Limit the amout we try to download in a single shot.
 * Size is in bytes.
 */
#define MAX_DL_SIZE 1024
#define LIMIT_PROGRAM_SIZE 0

/*
 * The following structures have little-endian fields denoted by
 * the leading underscore.  Don't access them directly - use inline
 * functions defined below.
 */

/*
 * The binary image to be downloaded consists of series of data blocks.
 * Each block has the following structure.
 */
struct dblock {
	__le32 addr;		/* adapter address where to write the block */
	__le16 len;		/* length of the data only, in bytes */
	char data[0];		/* data to be written */
} __attribute__ ((packed));

/*
 * Plug Data References are located in in the image after the last data
 * block.  They refer to areas in the adapter memory where the plug data
 * items with matching ID should be written.
 */
struct pdr {
	__le32 id;		/* record ID */
	__le32 addr;		/* adapter address where to write the data */
	__le32 len;		/* expected length of the data, in bytes */
	char next[0];		/* next PDR starts here */
} __attribute__ ((packed));

/*
 * Plug Data Items are located in the EEPROM read from the adapter by
 * primary firmware.  They refer to the device-specific data that should
 * be plugged into the secondary firmware.
 */
struct pdi {
	__le16 len;		/* length of ID and data, in words */
	__le16 id;		/* record ID */
	char data[0];		/* plug data */
} __attribute__ ((packed));

/*** FW data block access functions ***/

static inline u32
dblock_addr(const struct dblock *blk)
{
	return le32_to_cpu(blk->addr);
}

static inline u32
dblock_len(const struct dblock *blk)
{
	return le16_to_cpu(blk->len);
}

/*** PDR Access functions ***/

static inline u32
pdr_id(const struct pdr *pdr)
{
	return le32_to_cpu(pdr->id);
}

static inline u32
pdr_addr(const struct pdr *pdr)
{
	return le32_to_cpu(pdr->addr);
}

static inline u32
pdr_len(const struct pdr *pdr)
{
	return le32_to_cpu(pdr->len);
}

/*** PDI Access functions ***/

static inline u32
pdi_id(const struct pdi *pdi)
{
	return le16_to_cpu(pdi->id);
}

/* Return length of the data only, in bytes */
static inline u32
pdi_len(const struct pdi *pdi)
{
	return 2 * (le16_to_cpu(pdi->len) - 1);
}

/*** Hermes AUX control ***/

static inline void
hermes_aux_setaddr(hermes_t *hw, u32 addr)
{
	hermes_write_reg(hw, HERMES_AUXPAGE, (u16) (addr >> 7));
	hermes_write_reg(hw, HERMES_AUXOFFSET, (u16) (addr & 0x7F));
}

static inline int
hermes_aux_control(hermes_t *hw, int enabled)
{
	int desired_state = enabled ? HERMES_AUX_ENABLED : HERMES_AUX_DISABLED;
	int action = enabled ? HERMES_AUX_ENABLE : HERMES_AUX_DISABLE;
	int i;

	/* Already open? */
	if (hermes_read_reg(hw, HERMES_CONTROL) == desired_state)
		return 0;

	hermes_write_reg(hw, HERMES_PARAM0, HERMES_AUX_PW0);
	hermes_write_reg(hw, HERMES_PARAM1, HERMES_AUX_PW1);
	hermes_write_reg(hw, HERMES_PARAM2, HERMES_AUX_PW2);
	hermes_write_reg(hw, HERMES_CONTROL, action);

	for (i = 0; i < 20; i++) {
		udelay(10);
		if (hermes_read_reg(hw, HERMES_CONTROL) ==
		    desired_state)
			return 0;
	}

	return -EBUSY;
}

/*** Plug Data Functions ***/

/*
 * Scan PDR for the record with the specified RECORD_ID.
 * If it's not found, return NULL.
 */
static const struct pdr *
hermes_find_pdr(const struct pdr *first_pdr, u32 record_id, const void *end)
{
	const struct pdr *pdr = first_pdr;

	end -= sizeof(struct pdr);

	while (((void *) pdr <= end) &&
	       (pdr_id(pdr) != PDI_END)) {
		/*
		 * PDR area is currently not terminated by PDI_END.
		 * It's followed by CRC records, which have the type
		 * field where PDR has length.  The type can be 0 or 1.
		 */
		if (pdr_len(pdr) < 2)
			return NULL;

		/* If the record ID matches, we are done */
		if (pdr_id(pdr) == record_id)
			return pdr;

		pdr = (struct pdr *) pdr->next;
	}
	return NULL;
}

/* Scan production data items for a particular entry */
static const struct pdi *
hermes_find_pdi(const struct pdi *first_pdi, u32 record_id, const void *end)
{
	const struct pdi *pdi = first_pdi;

	end -= sizeof(struct pdi);

	while (((void *) pdi <= end) &&
	       (pdi_id(pdi) != PDI_END)) {

		/* If the record ID matches, we are done */
		if (pdi_id(pdi) == record_id)
			return pdi;

		pdi = (struct pdi *) &pdi->data[pdi_len(pdi)];
	}
	return NULL;
}

/* Process one Plug Data Item - find corresponding PDR and plug it */
static int
hermes_plug_pdi(hermes_t *hw, const struct pdr *first_pdr,
		const struct pdi *pdi, const void *pdr_end)
{
	const struct pdr *pdr;

	/* Find the PDR corresponding to this PDI */
	pdr = hermes_find_pdr(first_pdr, pdi_id(pdi), pdr_end);

	/* No match is found, safe to ignore */
	if (!pdr)
		return 0;

	/* Lengths of the data in PDI and PDR must match */
	if (pdi_len(pdi) != pdr_len(pdr))
		return -EINVAL;

	/* do the actual plugging */
	hermes_aux_setaddr(hw, pdr_addr(pdr));
	hermes_write_bytes(hw, HERMES_AUXDATA, pdi->data, pdi_len(pdi));

	return 0;
}

/* Read PDA from the adapter */
int hermes_read_pda(hermes_t *hw,
		    __le16 *pda,
		    u32 pda_addr,
		    u16 pda_len,
		    int use_eeprom) /* can we get this into hw? */
{
	int ret;
	u16 pda_size;
	u16 data_len = pda_len;
	__le16 *data = pda;

	if (use_eeprom) {
		/* PDA of spectrum symbol is in eeprom */

		/* Issue command to read EEPROM */
		ret = hermes_docmd_wait(hw, HERMES_CMD_READMIF, 0, NULL);
		if (ret)
			return ret;
	} else {
		/* wl_lkm does not include PDA size in the PDA area.
		 * We will pad the information into pda, so other routines
		 * don't have to be modified */
		pda[0] = cpu_to_le16(pda_len - 2);
			/* Includes CFG_PROD_DATA but not itself */
		pda[1] = cpu_to_le16(0x0800); /* CFG_PROD_DATA */
		data_len = pda_len - 4;
		data = pda + 2;
	}

	/* Open auxiliary port */
	ret = hermes_aux_control(hw, 1);
	pr_debug(PFX "AUX enable returned %d\n", ret);
	if (ret)
		return ret;

	/* read PDA from EEPROM */
	hermes_aux_setaddr(hw, pda_addr);
	hermes_read_words(hw, HERMES_AUXDATA, data, data_len / 2);

	/* Close aux port */
	ret = hermes_aux_control(hw, 0);
	pr_debug(PFX "AUX disable returned %d\n", ret);

	/* Check PDA length */
	pda_size = le16_to_cpu(pda[0]);
	pr_debug(PFX "Actual PDA length %d, Max allowed %d\n",
		 pda_size, pda_len);
	if (pda_size > pda_len)
		return -EINVAL;

	return 0;
}

/* Parse PDA and write the records into the adapter
 *
 * Attempt to write every records that is in the specified pda
 * which also has a valid production data record for the firmware.
 */
int hermes_apply_pda(hermes_t *hw,
		     const char *first_pdr,
		     const void *pdr_end,
		     const __le16 *pda,
		     const void *pda_end)
{
	int ret;
	const struct pdi *pdi;
	const struct pdr *pdr;

	pdr = (const struct pdr *) first_pdr;
	pda_end -= sizeof(struct pdi);

	/* Go through every PDI and plug them into the adapter */
	pdi = (const struct pdi *) (pda + 2);
	while (((void *) pdi <= pda_end) &&
	       (pdi_id(pdi) != PDI_END)) {
		ret = hermes_plug_pdi(hw, pdr, pdi, pdr_end);
		if (ret)
			return ret;

		/* Increment to the next PDI */
		pdi = (const struct pdi *) &pdi->data[pdi_len(pdi)];
	}
	return 0;
}

/* Identify the total number of bytes in all blocks
 * including the header data.
 */
size_t
hermes_blocks_length(const char *first_block, const void *end)
{
	const struct dblock *blk = (const struct dblock *) first_block;
	int total_len = 0;
	int len;

	end -= sizeof(*blk);

	/* Skip all blocks to locate Plug Data References
	 * (Spectrum CS) */
	while (((void *) blk <= end) &&
	       (dblock_addr(blk) != BLOCK_END)) {
		len = dblock_len(blk);
		total_len += sizeof(*blk) + len;
		blk = (struct dblock *) &blk->data[len];
	}

	return total_len;
}

/*** Hermes programming ***/

/* About to start programming data (Hermes I)
 * offset is the entry point
 *
 * Spectrum_cs' Symbol fw does not require this
 * wl_lkm Agere fw does
 * Don't know about intersil
 */
int hermesi_program_init(hermes_t *hw, u32 offset)
{
	int err;

	/* Disable interrupts?*/
	/*hw->inten = 0x0;*/
	/*hermes_write_regn(hw, INTEN, 0);*/
	/*hermes_set_irqmask(hw, 0);*/

	/* Acknowledge any outstanding command */
	hermes_write_regn(hw, EVACK, 0xFFFF);

	/* Using doicmd_wait rather than docmd_wait */
	err = hermes_doicmd_wait(hw,
				 0x0100 | HERMES_CMD_INIT,
				 0, 0, 0, NULL);
	if (err)
		return err;

	err = hermes_doicmd_wait(hw,
				 0x0000 | HERMES_CMD_INIT,
				 0, 0, 0, NULL);
	if (err)
		return err;

	err = hermes_aux_control(hw, 1);
	pr_debug(PFX "AUX enable returned %d\n", err);

	if (err)
		return err;

	pr_debug(KERN_DEBUG PFX "Enabling volatile, EP 0x%08x\n", offset);
	err = hermes_doicmd_wait(hw,
				 HERMES_PROGRAM_ENABLE_VOLATILE,
				 offset & 0xFFFFu,
				 offset >> 16,
				 0,
				 NULL);
	pr_debug(PFX "PROGRAM_ENABLE returned %d\n", err);

	return err;
}

/* Done programming data (Hermes I)
 *
 * Spectrum_cs' Symbol fw does not require this
 * wl_lkm Agere fw does
 * Don't know about intersil
 */
int hermesi_program_end(hermes_t *hw)
{
	struct hermes_response resp;
	int rc = 0;
	int err;

	rc = hermes_docmd_wait(hw, HERMES_PROGRAM_DISABLE, 0, &resp);

	pr_debug(PFX "PROGRAM_DISABLE returned %d, "
		 "r0 0x%04x, r1 0x%04x, r2 0x%04x\n",
		 rc, resp.resp0, resp.resp1, resp.resp2);

	if ((rc == 0) &&
	    ((resp.status & HERMES_STATUS_CMDCODE) != HERMES_CMD_DOWNLD))
		rc = -EIO;

	err = hermes_aux_control(hw, 0);
	pr_debug(PFX "AUX disable returned %d\n", err);

	/* Acknowledge any outstanding command */
	hermes_write_regn(hw, EVACK, 0xFFFF);

	/* Reinitialise, ignoring return */
	(void) hermes_doicmd_wait(hw, 0x0000 | HERMES_CMD_INIT,
				  0, 0, 0, NULL);

	return rc ? rc : err;
}

/* Program the data blocks */
int hermes_program(hermes_t *hw, const char *first_block, const void *end)
{
	const struct dblock *blk;
	u32 blkaddr;
	u32 blklen;
#if LIMIT_PROGRAM_SIZE
	u32 addr;
	u32 len;
#endif

	blk = (const struct dblock *) first_block;

	if ((void *) blk > (end - sizeof(*blk)))
		return -EIO;

	blkaddr = dblock_addr(blk);
	blklen = dblock_len(blk);

	while ((blkaddr != BLOCK_END) &&
	       (((void *) blk + blklen) <= end)) {
		pr_debug(PFX "Programming block of length %d "
			 "to address 0x%08x\n", blklen, blkaddr);

#if !LIMIT_PROGRAM_SIZE
		/* wl_lkm driver splits this into writes of 2000 bytes */
		hermes_aux_setaddr(hw, blkaddr);
		hermes_write_bytes(hw, HERMES_AUXDATA, blk->data,
				   blklen);
#else
		len = (blklen < MAX_DL_SIZE) ? blklen : MAX_DL_SIZE;
		addr = blkaddr;

		while (addr < (blkaddr + blklen)) {
			pr_debug(PFX "Programming subblock of length %d "
				 "to address 0x%08x. Data @ %p\n",
				 len, addr, &blk->data[addr - blkaddr]);

			hermes_aux_setaddr(hw, addr);
			hermes_write_bytes(hw, HERMES_AUXDATA,
					   &blk->data[addr - blkaddr],
					   len);

			addr += len;
			len = ((blkaddr + blklen - addr) < MAX_DL_SIZE) ?
				(blkaddr + blklen - addr) : MAX_DL_SIZE;
		}
#endif
		blk = (const struct dblock *) &blk->data[blklen];

		if ((void *) blk > (end - sizeof(*blk)))
			return -EIO;

		blkaddr = dblock_addr(blk);
		blklen = dblock_len(blk);
	}
	return 0;
}

/*** Default plugging data for Hermes I ***/
/* Values from wl_lkm_718/hcf/dhf.c */

#define DEFINE_DEFAULT_PDR(pid, length, data)				\
static const struct {							\
	__le16 len;							\
	__le16 id;							\
	u8 val[length];							\
} __attribute__ ((packed)) default_pdr_data_##pid = {			\
	cpu_to_le16((sizeof(default_pdr_data_##pid)/			\
				sizeof(__le16)) - 1),			\
	cpu_to_le16(pid),						\
	data								\
}

#define DEFAULT_PDR(pid) default_pdr_data_##pid

/*  HWIF Compatiblity */
DEFINE_DEFAULT_PDR(0x0005, 10, "\x00\x00\x06\x00\x01\x00\x01\x00\x01\x00");

/* PPPPSign */
DEFINE_DEFAULT_PDR(0x0108, 4, "\x00\x00\x00\x00");

/* PPPPProf */
DEFINE_DEFAULT_PDR(0x0109, 10, "\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00");

/* Antenna diversity */
DEFINE_DEFAULT_PDR(0x0150, 2, "\x00\x3F");

/* Modem VCO band Set-up */
DEFINE_DEFAULT_PDR(0x0160, 28,
		   "\x00\x00\x00\x00\x00\x00\x00\x00"
		   "\x00\x00\x00\x00\x00\x00\x00\x00"
		   "\x00\x00\x00\x00\x00\x00\x00\x00"
		   "\x00\x00\x00\x00");

/* Modem Rx Gain Table Values */
DEFINE_DEFAULT_PDR(0x0161, 256,
		   "\x3F\x01\x3F\01\x3F\x01\x3F\x01"
		   "\x3F\x01\x3F\01\x3F\x01\x3F\x01"
		   "\x3F\x01\x3F\01\x3F\x01\x3F\x01"
		   "\x3F\x01\x3F\01\x3F\x01\x3F\x01"
		   "\x3F\x01\x3E\01\x3E\x01\x3D\x01"
		   "\x3D\x01\x3C\01\x3C\x01\x3B\x01"
		   "\x3B\x01\x3A\01\x3A\x01\x39\x01"
		   "\x39\x01\x38\01\x38\x01\x37\x01"
		   "\x37\x01\x36\01\x36\x01\x35\x01"
		   "\x35\x01\x34\01\x34\x01\x33\x01"
		   "\x33\x01\x32\x01\x32\x01\x31\x01"
		   "\x31\x01\x30\x01\x30\x01\x7B\x01"
		   "\x7B\x01\x7A\x01\x7A\x01\x79\x01"
		   "\x79\x01\x78\x01\x78\x01\x77\x01"
		   "\x77\x01\x76\x01\x76\x01\x75\x01"
		   "\x75\x01\x74\x01\x74\x01\x73\x01"
		   "\x73\x01\x72\x01\x72\x01\x71\x01"
		   "\x71\x01\x70\x01\x70\x01\x68\x01"
		   "\x68\x01\x67\x01\x67\x01\x66\x01"
		   "\x66\x01\x65\x01\x65\x01\x57\x01"
		   "\x57\x01\x56\x01\x56\x01\x55\x01"
		   "\x55\x01\x54\x01\x54\x01\x53\x01"
		   "\x53\x01\x52\x01\x52\x01\x51\x01"
		   "\x51\x01\x50\x01\x50\x01\x48\x01"
		   "\x48\x01\x47\x01\x47\x01\x46\x01"
		   "\x46\x01\x45\x01\x45\x01\x44\x01"
		   "\x44\x01\x43\x01\x43\x01\x42\x01"
		   "\x42\x01\x41\x01\x41\x01\x40\x01"
		   "\x40\x01\x40\x01\x40\x01\x40\x01"
		   "\x40\x01\x40\x01\x40\x01\x40\x01"
		   "\x40\x01\x40\x01\x40\x01\x40\x01"
		   "\x40\x01\x40\x01\x40\x01\x40\x01");

/* Write PDA according to certain rules.
 *
 * For every production data record, look for a previous setting in
 * the pda, and use that.
 *
 * For certain records, use defaults if they are not found in pda.
 */
int hermes_apply_pda_with_defaults(hermes_t *hw,
				   const char *first_pdr,
				   const void *pdr_end,
				   const __le16 *pda,
				   const void *pda_end)
{
	const struct pdr *pdr = (const struct pdr *) first_pdr;
	const struct pdi *first_pdi = (const struct pdi *) &pda[2];
	const struct pdi *pdi;
	const struct pdi *default_pdi = NULL;
	const struct pdi *outdoor_pdi;
	int record_id;

	pdr_end -= sizeof(struct pdr);

	while (((void *) pdr <= pdr_end) &&
	       (pdr_id(pdr) != PDI_END)) {
		/*
		 * For spectrum_cs firmwares,
		 * PDR area is currently not terminated by PDI_END.
		 * It's followed by CRC records, which have the type
		 * field where PDR has length.  The type can be 0 or 1.
		 */
		if (pdr_len(pdr) < 2)
			break;
		record_id = pdr_id(pdr);

		pdi = hermes_find_pdi(first_pdi, record_id, pda_end);
		if (pdi)
			pr_debug(PFX "Found record 0x%04x at %p\n",
				 record_id, pdi);

		switch (record_id) {
		case 0x110: /* Modem REFDAC values */
		case 0x120: /* Modem VGDAC values */
			outdoor_pdi = hermes_find_pdi(first_pdi, record_id + 1,
						      pda_end);
			default_pdi = NULL;
			if (outdoor_pdi) {
				pdi = outdoor_pdi;
				pr_debug(PFX
					 "Using outdoor record 0x%04x at %p\n",
					 record_id + 1, pdi);
			}
			break;
		case 0x5: /*  HWIF Compatiblity */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0005);
			break;
		case 0x108: /* PPPPSign */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0108);
			break;
		case 0x109: /* PPPPProf */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0109);
			break;
		case 0x150: /* Antenna diversity */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0150);
			break;
		case 0x160: /* Modem VCO band Set-up */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0160);
			break;
		case 0x161: /* Modem Rx Gain Table Values */
			default_pdi = (struct pdi *) &DEFAULT_PDR(0x0161);
			break;
		default:
			default_pdi = NULL;
			break;
		}
		if (!pdi && default_pdi) {
			/* Use default */
			pdi = default_pdi;
			pr_debug(PFX "Using default record 0x%04x at %p\n",
				 record_id, pdi);
		}

		if (pdi) {
			/* Lengths of the data in PDI and PDR must match */
			if ((pdi_len(pdi) == pdr_len(pdr)) &&
			    ((void *) pdi->data + pdi_len(pdi) < pda_end)) {
				/* do the actual plugging */
				hermes_aux_setaddr(hw, pdr_addr(pdr));
				hermes_write_bytes(hw, HERMES_AUXDATA,
						   pdi->data, pdi_len(pdi));
			}
		}

		pdr++;
	}
	return 0;
}