aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/orinoco/hermes_dld.c
blob: 4a10b7aca043ba90ca4a184986636b6d35e0e6bd (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
/*
 * 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: "

/* 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 */

/*
 * 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 */
} __packed;

/*
 * Plug Data References are located 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 */
} __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 */
} __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);
}

/*** 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(struct hermes *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 */
	hw->ops->program(hw, pdi->data, pdr_addr(pdr), pdi_len(pdi));

	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(struct hermes *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 ***/

/* Program the data blocks */
int hermes_program(struct hermes *hw, const char *first_block, const void *end)
{
	const struct dblock *blk;
	u32 blkaddr;
	u32 blklen;
	int err = 0;

	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);

		err = hw->ops->program(hw, blk->data, blkaddr, blklen);
		if (err)
			break;

		blk = (const struct dblock *) &blk->data[blklen];

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

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

/*** 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];							\
} __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 Compatibility */
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(struct hermes *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 Compatibility */
			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 */
				hw->ops->program(hw, pdi->data, pdr_addr(pdr),
						 pdi_len(pdi));
			}
		}

		pdr++;
	}
	return 0;
}