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19#include <linux/init.h>
20#include <linux/firmware.h>
21#include <linux/etherdevice.h>
22#include <linux/sort.h>
23
24#include <net/mac80211.h>
25
26#include "p54.h"
27#include "eeprom.h"
28#include "lmac.h"
29
30static struct ieee80211_rate p54_bgrates[] = {
31 { .bitrate = 10, .hw_value = 0, },
32 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
33 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
34 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
35 { .bitrate = 60, .hw_value = 4, },
36 { .bitrate = 90, .hw_value = 5, },
37 { .bitrate = 120, .hw_value = 6, },
38 { .bitrate = 180, .hw_value = 7, },
39 { .bitrate = 240, .hw_value = 8, },
40 { .bitrate = 360, .hw_value = 9, },
41 { .bitrate = 480, .hw_value = 10, },
42 { .bitrate = 540, .hw_value = 11, },
43};
44
45static struct ieee80211_rate p54_arates[] = {
46 { .bitrate = 60, .hw_value = 4, },
47 { .bitrate = 90, .hw_value = 5, },
48 { .bitrate = 120, .hw_value = 6, },
49 { .bitrate = 180, .hw_value = 7, },
50 { .bitrate = 240, .hw_value = 8, },
51 { .bitrate = 360, .hw_value = 9, },
52 { .bitrate = 480, .hw_value = 10, },
53 { .bitrate = 540, .hw_value = 11, },
54};
55
56#define CHAN_HAS_CAL BIT(0)
57#define CHAN_HAS_LIMIT BIT(1)
58#define CHAN_HAS_CURVE BIT(2)
59#define CHAN_HAS_ALL (CHAN_HAS_CAL | CHAN_HAS_LIMIT | CHAN_HAS_CURVE)
60
61struct p54_channel_entry {
62 u16 freq;
63 u16 data;
64 int index;
65 enum ieee80211_band band;
66};
67
68struct p54_channel_list {
69 struct p54_channel_entry *channels;
70 size_t entries;
71 size_t max_entries;
72 size_t band_channel_num[IEEE80211_NUM_BANDS];
73};
74
75static int p54_get_band_from_freq(u16 freq)
76{
77
78
79 if ((freq >= 2412) && (freq <= 2484))
80 return IEEE80211_BAND_2GHZ;
81
82 if ((freq >= 4920) && (freq <= 5825))
83 return IEEE80211_BAND_5GHZ;
84
85 return -1;
86}
87
88static int p54_compare_channels(const void *_a,
89 const void *_b)
90{
91 const struct p54_channel_entry *a = _a;
92 const struct p54_channel_entry *b = _b;
93
94 return a->index - b->index;
95}
96
97static int p54_fill_band_bitrates(struct ieee80211_hw *dev,
98 struct ieee80211_supported_band *band_entry,
99 enum ieee80211_band band)
100{
101
102
103 switch (band) {
104 case IEEE80211_BAND_2GHZ:
105 band_entry->bitrates = p54_bgrates;
106 band_entry->n_bitrates = ARRAY_SIZE(p54_bgrates);
107 break;
108 case IEEE80211_BAND_5GHZ:
109 band_entry->bitrates = p54_arates;
110 band_entry->n_bitrates = ARRAY_SIZE(p54_arates);
111 break;
112 default:
113 return -EINVAL;
114 }
115
116 return 0;
117}
118
119static int p54_generate_band(struct ieee80211_hw *dev,
120 struct p54_channel_list *list,
121 enum ieee80211_band band)
122{
123 struct p54_common *priv = dev->priv;
124 struct ieee80211_supported_band *tmp, *old;
125 unsigned int i, j;
126 int ret = -ENOMEM;
127
128 if ((!list->entries) || (!list->band_channel_num[band]))
129 return 0;
130
131 tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
132 if (!tmp)
133 goto err_out;
134
135 tmp->channels = kzalloc(sizeof(struct ieee80211_channel) *
136 list->band_channel_num[band], GFP_KERNEL);
137 if (!tmp->channels)
138 goto err_out;
139
140 ret = p54_fill_band_bitrates(dev, tmp, band);
141 if (ret)
142 goto err_out;
143
144 for (i = 0, j = 0; (j < list->band_channel_num[band]) &&
145 (i < list->entries); i++) {
146
147 if (list->channels[i].band != band)
148 continue;
149
150 if (list->channels[i].data != CHAN_HAS_ALL) {
151 printk(KERN_ERR "%s:%s%s%s is/are missing for "
152 "channel:%d [%d MHz].\n",
153 wiphy_name(dev->wiphy),
154 (list->channels[i].data & CHAN_HAS_CAL ? "" :
155 " [iqauto calibration data]"),
156 (list->channels[i].data & CHAN_HAS_LIMIT ? "" :
157 " [output power limits]"),
158 (list->channels[i].data & CHAN_HAS_CURVE ? "" :
159 " [curve data]"),
160 list->channels[i].index, list->channels[i].freq);
161 }
162
163 tmp->channels[j].band = list->channels[i].band;
164 tmp->channels[j].center_freq = list->channels[i].freq;
165 j++;
166 }
167
168 tmp->n_channels = list->band_channel_num[band];
169 old = priv->band_table[band];
170 priv->band_table[band] = tmp;
171 if (old) {
172 kfree(old->channels);
173 kfree(old);
174 }
175
176 return 0;
177
178err_out:
179 if (tmp) {
180 kfree(tmp->channels);
181 kfree(tmp);
182 }
183
184 return ret;
185}
186
187static void p54_update_channel_param(struct p54_channel_list *list,
188 u16 freq, u16 data)
189{
190 int band, i;
191
192
193
194
195
196
197 for (i = list->entries; i >= 0; i--) {
198 if (freq == list->channels[i].freq) {
199 list->channels[i].data |= data;
200 break;
201 }
202 }
203
204 if ((i < 0) && (list->entries < list->max_entries)) {
205
206 band = p54_get_band_from_freq(freq);
207
208
209
210
211
212 if (band < 0)
213 return ;
214
215 i = list->entries++;
216 list->band_channel_num[band]++;
217
218 list->channels[i].freq = freq;
219 list->channels[i].data = data;
220 list->channels[i].band = band;
221 list->channels[i].index = ieee80211_frequency_to_channel(freq);
222
223 }
224}
225
226static int p54_generate_channel_lists(struct ieee80211_hw *dev)
227{
228 struct p54_common *priv = dev->priv;
229 struct p54_channel_list *list;
230 unsigned int i, j, max_channel_num;
231 int ret = -ENOMEM;
232 u16 freq;
233
234 if ((priv->iq_autocal_len != priv->curve_data->entries) ||
235 (priv->iq_autocal_len != priv->output_limit->entries))
236 printk(KERN_ERR "%s: EEPROM is damaged... you may not be able"
237 "to use all channels with this device.\n",
238 wiphy_name(dev->wiphy));
239
240 max_channel_num = max_t(unsigned int, priv->output_limit->entries,
241 priv->iq_autocal_len);
242 max_channel_num = max_t(unsigned int, max_channel_num,
243 priv->curve_data->entries);
244
245 list = kzalloc(sizeof(*list), GFP_KERNEL);
246 if (!list)
247 goto free;
248
249 list->max_entries = max_channel_num;
250 list->channels = kzalloc(sizeof(struct p54_channel_entry) *
251 max_channel_num, GFP_KERNEL);
252 if (!list->channels)
253 goto free;
254
255 for (i = 0; i < max_channel_num; i++) {
256 if (i < priv->iq_autocal_len) {
257 freq = le16_to_cpu(priv->iq_autocal[i].freq);
258 p54_update_channel_param(list, freq, CHAN_HAS_CAL);
259 }
260
261 if (i < priv->output_limit->entries) {
262 freq = le16_to_cpup((__le16 *) (i *
263 priv->output_limit->entry_size +
264 priv->output_limit->offset +
265 priv->output_limit->data));
266
267 p54_update_channel_param(list, freq, CHAN_HAS_LIMIT);
268 }
269
270 if (i < priv->curve_data->entries) {
271 freq = le16_to_cpup((__le16 *) (i *
272 priv->curve_data->entry_size +
273 priv->curve_data->offset +
274 priv->curve_data->data));
275
276 p54_update_channel_param(list, freq, CHAN_HAS_CURVE);
277 }
278 }
279
280
281 sort(list->channels, list->entries, sizeof(struct p54_channel_entry),
282 p54_compare_channels, NULL);
283
284 for (i = 0, j = 0; i < IEEE80211_NUM_BANDS; i++) {
285 if (list->band_channel_num[i]) {
286 ret = p54_generate_band(dev, list, i);
287 if (ret)
288 goto free;
289
290 j++;
291 }
292 }
293 if (j == 0) {
294
295 ret = -EINVAL;
296 }
297
298free:
299 if (list) {
300 kfree(list->channels);
301 kfree(list);
302 }
303
304 return ret;
305}
306
307static int p54_convert_rev0(struct ieee80211_hw *dev,
308 struct pda_pa_curve_data *curve_data)
309{
310 struct p54_common *priv = dev->priv;
311 struct p54_pa_curve_data_sample *dst;
312 struct pda_pa_curve_data_sample_rev0 *src;
313 size_t cd_len = sizeof(*curve_data) +
314 (curve_data->points_per_channel*sizeof(*dst) + 2) *
315 curve_data->channels;
316 unsigned int i, j;
317 void *source, *target;
318
319 priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
320 GFP_KERNEL);
321 if (!priv->curve_data)
322 return -ENOMEM;
323
324 priv->curve_data->entries = curve_data->channels;
325 priv->curve_data->entry_size = sizeof(__le16) +
326 sizeof(*dst) * curve_data->points_per_channel;
327 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
328 priv->curve_data->len = cd_len;
329 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
330 source = curve_data->data;
331 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
332 for (i = 0; i < curve_data->channels; i++) {
333 __le16 *freq = source;
334 source += sizeof(__le16);
335 *((__le16 *)target) = *freq;
336 target += sizeof(__le16);
337 for (j = 0; j < curve_data->points_per_channel; j++) {
338 dst = target;
339 src = source;
340
341 dst->rf_power = src->rf_power;
342 dst->pa_detector = src->pa_detector;
343 dst->data_64qam = src->pcv;
344
345#define SUB(x, y) (u8)(((x) - (y)) > (x) ? 0 : (x) - (y))
346 dst->data_16qam = SUB(src->pcv, 12);
347 dst->data_qpsk = SUB(dst->data_16qam, 12);
348 dst->data_bpsk = SUB(dst->data_qpsk, 12);
349 dst->data_barker = SUB(dst->data_bpsk, 14);
350#undef SUB
351 target += sizeof(*dst);
352 source += sizeof(*src);
353 }
354 }
355
356 return 0;
357}
358
359static int p54_convert_rev1(struct ieee80211_hw *dev,
360 struct pda_pa_curve_data *curve_data)
361{
362 struct p54_common *priv = dev->priv;
363 struct p54_pa_curve_data_sample *dst;
364 struct pda_pa_curve_data_sample_rev1 *src;
365 size_t cd_len = sizeof(*curve_data) +
366 (curve_data->points_per_channel*sizeof(*dst) + 2) *
367 curve_data->channels;
368 unsigned int i, j;
369 void *source, *target;
370
371 priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
372 GFP_KERNEL);
373 if (!priv->curve_data)
374 return -ENOMEM;
375
376 priv->curve_data->entries = curve_data->channels;
377 priv->curve_data->entry_size = sizeof(__le16) +
378 sizeof(*dst) * curve_data->points_per_channel;
379 priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
380 priv->curve_data->len = cd_len;
381 memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
382 source = curve_data->data;
383 target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
384 for (i = 0; i < curve_data->channels; i++) {
385 __le16 *freq = source;
386 source += sizeof(__le16);
387 *((__le16 *)target) = *freq;
388 target += sizeof(__le16);
389 for (j = 0; j < curve_data->points_per_channel; j++) {
390 memcpy(target, source, sizeof(*src));
391
392 target += sizeof(*dst);
393 source += sizeof(*src);
394 }
395 source++;
396 }
397
398 return 0;
399}
400
401static const char *p54_rf_chips[] = { "INVALID-0", "Duette3", "Duette2",
402 "Frisbee", "Xbow", "Longbow", "INVALID-6", "INVALID-7" };
403
404static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
405 u16 type)
406{
407 struct p54_common *priv = dev->priv;
408 int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
409 int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
410 int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
411 int i;
412
413 if (len != (entry_size * num_entries)) {
414 printk(KERN_ERR "%s: unknown rssi calibration data packing "
415 " type:(%x) len:%d.\n",
416 wiphy_name(dev->wiphy), type, len);
417
418 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
419 data, len);
420
421 printk(KERN_ERR "%s: please report this issue.\n",
422 wiphy_name(dev->wiphy));
423 return;
424 }
425
426 for (i = 0; i < num_entries; i++) {
427 struct pda_rssi_cal_entry *cal = data +
428 (offset + i * entry_size);
429 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
430 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
431 }
432}
433
434static void p54_parse_default_country(struct ieee80211_hw *dev,
435 void *data, int len)
436{
437 struct pda_country *country;
438
439 if (len != sizeof(*country)) {
440 printk(KERN_ERR "%s: found possible invalid default country "
441 "eeprom entry. (entry size: %d)\n",
442 wiphy_name(dev->wiphy), len);
443
444 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
445 data, len);
446
447 printk(KERN_ERR "%s: please report this issue.\n",
448 wiphy_name(dev->wiphy));
449 return;
450 }
451
452 country = (struct pda_country *) data;
453 if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
454 regulatory_hint(dev->wiphy, country->alpha2);
455 else {
456
457
458
459
460
461 }
462}
463
464static int p54_convert_output_limits(struct ieee80211_hw *dev,
465 u8 *data, size_t len)
466{
467 struct p54_common *priv = dev->priv;
468
469 if (len < 2)
470 return -EINVAL;
471
472 if (data[0] != 0) {
473 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
474 wiphy_name(dev->wiphy), data[0]);
475 return -EINVAL;
476 }
477
478 if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
479 return -EINVAL;
480
481 priv->output_limit = kmalloc(data[1] *
482 sizeof(struct pda_channel_output_limit) +
483 sizeof(*priv->output_limit), GFP_KERNEL);
484
485 if (!priv->output_limit)
486 return -ENOMEM;
487
488 priv->output_limit->offset = 0;
489 priv->output_limit->entries = data[1];
490 priv->output_limit->entry_size =
491 sizeof(struct pda_channel_output_limit);
492 priv->output_limit->len = priv->output_limit->entry_size *
493 priv->output_limit->entries +
494 priv->output_limit->offset;
495
496 memcpy(priv->output_limit->data, &data[2],
497 data[1] * sizeof(struct pda_channel_output_limit));
498
499 return 0;
500}
501
502static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
503 size_t total_len)
504{
505 struct p54_cal_database *dst;
506 size_t payload_len, entries, entry_size, offset;
507
508 payload_len = le16_to_cpu(src->len);
509 entries = le16_to_cpu(src->entries);
510 entry_size = le16_to_cpu(src->entry_size);
511 offset = le16_to_cpu(src->offset);
512 if (((entries * entry_size + offset) != payload_len) ||
513 (payload_len + sizeof(*src) != total_len))
514 return NULL;
515
516 dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
517 if (!dst)
518 return NULL;
519
520 dst->entries = entries;
521 dst->entry_size = entry_size;
522 dst->offset = offset;
523 dst->len = payload_len;
524
525 memcpy(dst->data, src->data, payload_len);
526 return dst;
527}
528
529int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
530{
531 struct p54_common *priv = dev->priv;
532 struct eeprom_pda_wrap *wrap;
533 struct pda_entry *entry;
534 unsigned int data_len, entry_len;
535 void *tmp;
536 int err;
537 u8 *end = (u8 *)eeprom + len;
538 u16 synth = 0;
539
540 wrap = (struct eeprom_pda_wrap *) eeprom;
541 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
542
543
544 while ((u8 *)entry <= end - sizeof(*entry)) {
545 entry_len = le16_to_cpu(entry->len);
546 data_len = ((entry_len - 1) << 1);
547
548
549 if ((u8 *)entry + sizeof(*entry) + data_len > end)
550 break;
551
552 switch (le16_to_cpu(entry->code)) {
553 case PDR_MAC_ADDRESS:
554 if (data_len != ETH_ALEN)
555 break;
556 SET_IEEE80211_PERM_ADDR(dev, entry->data);
557 break;
558 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
559 if (priv->output_limit)
560 break;
561 err = p54_convert_output_limits(dev, entry->data,
562 data_len);
563 if (err)
564 goto err;
565 break;
566 case PDR_PRISM_PA_CAL_CURVE_DATA: {
567 struct pda_pa_curve_data *curve_data =
568 (struct pda_pa_curve_data *)entry->data;
569 if (data_len < sizeof(*curve_data)) {
570 err = -EINVAL;
571 goto err;
572 }
573
574 switch (curve_data->cal_method_rev) {
575 case 0:
576 err = p54_convert_rev0(dev, curve_data);
577 break;
578 case 1:
579 err = p54_convert_rev1(dev, curve_data);
580 break;
581 default:
582 printk(KERN_ERR "%s: unknown curve data "
583 "revision %d\n",
584 wiphy_name(dev->wiphy),
585 curve_data->cal_method_rev);
586 err = -ENODEV;
587 break;
588 }
589 if (err)
590 goto err;
591 }
592 break;
593 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
594 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
595 if (!priv->iq_autocal) {
596 err = -ENOMEM;
597 goto err;
598 }
599
600 memcpy(priv->iq_autocal, entry->data, data_len);
601 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
602 break;
603 case PDR_DEFAULT_COUNTRY:
604 p54_parse_default_country(dev, entry->data, data_len);
605 break;
606 case PDR_INTERFACE_LIST:
607 tmp = entry->data;
608 while ((u8 *)tmp < entry->data + data_len) {
609 struct exp_if *exp_if = tmp;
610 if (exp_if->if_id == cpu_to_le16(IF_ID_ISL39000))
611 synth = le16_to_cpu(exp_if->variant);
612 tmp += sizeof(*exp_if);
613 }
614 break;
615 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
616 if (data_len < 2)
617 break;
618 priv->version = *(u8 *)(entry->data + 1);
619 break;
620 case PDR_RSSI_LINEAR_APPROXIMATION:
621 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
622 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
623 p54_parse_rssical(dev, entry->data, data_len,
624 le16_to_cpu(entry->code));
625 break;
626 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
627 __le16 *src = (void *) entry->data;
628 s16 *dst = (void *) &priv->rssical_db;
629 int i;
630
631 if (data_len != sizeof(priv->rssical_db)) {
632 err = -EINVAL;
633 goto err;
634 }
635 for (i = 0; i < sizeof(priv->rssical_db) /
636 sizeof(*src); i++)
637 *(dst++) = (s16) le16_to_cpu(*(src++));
638 }
639 break;
640 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
641 struct pda_custom_wrapper *pda = (void *) entry->data;
642 if (priv->output_limit || data_len < sizeof(*pda))
643 break;
644 priv->output_limit = p54_convert_db(pda, data_len);
645 }
646 break;
647 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
648 struct pda_custom_wrapper *pda = (void *) entry->data;
649 if (priv->curve_data || data_len < sizeof(*pda))
650 break;
651 priv->curve_data = p54_convert_db(pda, data_len);
652 }
653 break;
654 case PDR_END:
655
656 entry_len = len;
657 break;
658 default:
659 break;
660 }
661
662 entry = (void *)entry + (entry_len + 1)*2;
663 }
664
665 if (!synth || !priv->iq_autocal || !priv->output_limit ||
666 !priv->curve_data) {
667 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
668 wiphy_name(dev->wiphy));
669 err = -EINVAL;
670 goto err;
671 }
672
673 err = p54_generate_channel_lists(dev);
674 if (err)
675 goto err;
676
677 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
678 if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
679 p54_init_xbow_synth(priv);
680 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
681 dev->wiphy->bands[IEEE80211_BAND_2GHZ] =
682 priv->band_table[IEEE80211_BAND_2GHZ];
683 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
684 dev->wiphy->bands[IEEE80211_BAND_5GHZ] =
685 priv->band_table[IEEE80211_BAND_5GHZ];
686 if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
687 priv->rx_diversity_mask = 3;
688 if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
689 priv->tx_diversity_mask = 3;
690
691 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
692 u8 perm_addr[ETH_ALEN];
693
694 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
695 wiphy_name(dev->wiphy));
696 random_ether_addr(perm_addr);
697 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
698 }
699
700 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
701 wiphy_name(dev->wiphy), dev->wiphy->perm_addr, priv->version,
702 p54_rf_chips[priv->rxhw]);
703
704 return 0;
705
706err:
707 kfree(priv->iq_autocal);
708 kfree(priv->output_limit);
709 kfree(priv->curve_data);
710 priv->iq_autocal = NULL;
711 priv->output_limit = NULL;
712 priv->curve_data = NULL;
713
714 printk(KERN_ERR "%s: eeprom parse failed!\n",
715 wiphy_name(dev->wiphy));
716 return err;
717}
718EXPORT_SYMBOL_GPL(p54_parse_eeprom);
719
720int p54_read_eeprom(struct ieee80211_hw *dev)
721{
722 struct p54_common *priv = dev->priv;
723 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
724 int ret = -ENOMEM;
725 void *eeprom;
726
727 maxblocksize = EEPROM_READBACK_LEN;
728 if (priv->fw_var >= 0x509)
729 maxblocksize -= 0xc;
730 else
731 maxblocksize -= 0x4;
732
733 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
734 if (unlikely(!eeprom))
735 goto free;
736
737 while (eeprom_size) {
738 blocksize = min(eeprom_size, maxblocksize);
739 ret = p54_download_eeprom(priv, (void *) (eeprom + offset),
740 offset, blocksize);
741 if (unlikely(ret))
742 goto free;
743
744 offset += blocksize;
745 eeprom_size -= blocksize;
746 }
747
748 ret = p54_parse_eeprom(dev, eeprom, offset);
749free:
750 kfree(eeprom);
751 return ret;
752}
753EXPORT_SYMBOL_GPL(p54_read_eeprom);
754
