2 * Common code for mac80211 Prism54 drivers
4 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
5 * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
9 * - the islsm (softmac prism54) driver, which is:
10 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
12 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
19 #include <linux/init.h>
20 #include <linux/firmware.h>
21 #include <linux/etherdevice.h>
23 #include <net/mac80211.h>
26 #include "p54common.h"
28 static int modparam_nohwcrypt;
29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
32 MODULE_DESCRIPTION("Softmac Prism54 common code");
33 MODULE_LICENSE("GPL");
34 MODULE_ALIAS("prism54common");
36 static struct ieee80211_rate p54_bgrates[] = {
37 { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
38 { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
39 { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
40 { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
41 { .bitrate = 60, .hw_value = 4, },
42 { .bitrate = 90, .hw_value = 5, },
43 { .bitrate = 120, .hw_value = 6, },
44 { .bitrate = 180, .hw_value = 7, },
45 { .bitrate = 240, .hw_value = 8, },
46 { .bitrate = 360, .hw_value = 9, },
47 { .bitrate = 480, .hw_value = 10, },
48 { .bitrate = 540, .hw_value = 11, },
51 static struct ieee80211_channel p54_bgchannels[] = {
52 { .center_freq = 2412, .hw_value = 1, },
53 { .center_freq = 2417, .hw_value = 2, },
54 { .center_freq = 2422, .hw_value = 3, },
55 { .center_freq = 2427, .hw_value = 4, },
56 { .center_freq = 2432, .hw_value = 5, },
57 { .center_freq = 2437, .hw_value = 6, },
58 { .center_freq = 2442, .hw_value = 7, },
59 { .center_freq = 2447, .hw_value = 8, },
60 { .center_freq = 2452, .hw_value = 9, },
61 { .center_freq = 2457, .hw_value = 10, },
62 { .center_freq = 2462, .hw_value = 11, },
63 { .center_freq = 2467, .hw_value = 12, },
64 { .center_freq = 2472, .hw_value = 13, },
65 { .center_freq = 2484, .hw_value = 14, },
68 static struct ieee80211_supported_band band_2GHz = {
69 .channels = p54_bgchannels,
70 .n_channels = ARRAY_SIZE(p54_bgchannels),
71 .bitrates = p54_bgrates,
72 .n_bitrates = ARRAY_SIZE(p54_bgrates),
75 static struct ieee80211_rate p54_arates[] = {
76 { .bitrate = 60, .hw_value = 4, },
77 { .bitrate = 90, .hw_value = 5, },
78 { .bitrate = 120, .hw_value = 6, },
79 { .bitrate = 180, .hw_value = 7, },
80 { .bitrate = 240, .hw_value = 8, },
81 { .bitrate = 360, .hw_value = 9, },
82 { .bitrate = 480, .hw_value = 10, },
83 { .bitrate = 540, .hw_value = 11, },
86 static struct ieee80211_channel p54_achannels[] = {
87 { .center_freq = 4920 },
88 { .center_freq = 4940 },
89 { .center_freq = 4960 },
90 { .center_freq = 4980 },
91 { .center_freq = 5040 },
92 { .center_freq = 5060 },
93 { .center_freq = 5080 },
94 { .center_freq = 5170 },
95 { .center_freq = 5180 },
96 { .center_freq = 5190 },
97 { .center_freq = 5200 },
98 { .center_freq = 5210 },
99 { .center_freq = 5220 },
100 { .center_freq = 5230 },
101 { .center_freq = 5240 },
102 { .center_freq = 5260 },
103 { .center_freq = 5280 },
104 { .center_freq = 5300 },
105 { .center_freq = 5320 },
106 { .center_freq = 5500 },
107 { .center_freq = 5520 },
108 { .center_freq = 5540 },
109 { .center_freq = 5560 },
110 { .center_freq = 5580 },
111 { .center_freq = 5600 },
112 { .center_freq = 5620 },
113 { .center_freq = 5640 },
114 { .center_freq = 5660 },
115 { .center_freq = 5680 },
116 { .center_freq = 5700 },
117 { .center_freq = 5745 },
118 { .center_freq = 5765 },
119 { .center_freq = 5785 },
120 { .center_freq = 5805 },
121 { .center_freq = 5825 },
124 static struct ieee80211_supported_band band_5GHz = {
125 .channels = p54_achannels,
126 .n_channels = ARRAY_SIZE(p54_achannels),
127 .bitrates = p54_arates,
128 .n_bitrates = ARRAY_SIZE(p54_arates),
131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
133 struct p54_common *priv = dev->priv;
134 struct bootrec_exp_if *exp_if;
135 struct bootrec *bootrec;
136 u32 *data = (u32 *)fw->data;
137 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
138 u8 *fw_version = NULL;
145 while (data < end_data && *data)
148 while (data < end_data && !*data)
151 bootrec = (struct bootrec *) data;
153 while (bootrec->data <= end_data &&
154 (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
155 u32 code = le32_to_cpu(bootrec->code);
157 case BR_CODE_COMPONENT_ID:
158 priv->fw_interface = be32_to_cpup((__be32 *)
160 switch (priv->fw_interface) {
164 char *iftype = (char *)bootrec->data;
165 printk(KERN_INFO "%s: p54 detected a LM%c%c "
167 wiphy_name(dev->wiphy),
168 iftype[2], iftype[3]);
173 printk(KERN_ERR "%s: unsupported firmware\n",
174 wiphy_name(dev->wiphy));
178 case BR_CODE_COMPONENT_VERSION:
179 /* 24 bytes should be enough for all firmwares */
180 if (strnlen((unsigned char*)bootrec->data, 24) < 24)
181 fw_version = (unsigned char*)bootrec->data;
183 case BR_CODE_DESCR: {
184 struct bootrec_desc *desc =
185 (struct bootrec_desc *)bootrec->data;
186 priv->rx_start = le32_to_cpu(desc->rx_start);
187 /* FIXME add sanity checking */
188 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
189 priv->headroom = desc->headroom;
190 priv->tailroom = desc->tailroom;
191 priv->privacy_caps = desc->privacy_caps;
192 priv->rx_keycache_size = desc->rx_keycache_size;
193 if (le32_to_cpu(bootrec->len) == 11)
194 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
196 priv->rx_mtu = (size_t)
197 0x620 - priv->tx_hdr_len;
200 case BR_CODE_EXPOSED_IF:
201 exp_if = (struct bootrec_exp_if *) bootrec->data;
202 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
203 if (exp_if[i].if_id == cpu_to_le16(0x1a))
204 priv->fw_var = le16_to_cpu(exp_if[i].variant);
206 case BR_CODE_DEPENDENT_IF:
208 case BR_CODE_END_OF_BRA:
209 case LEGACY_BR_CODE_END_OF_BRA:
215 bootrec = (struct bootrec *)&bootrec->data[len];
219 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
220 wiphy_name(dev->wiphy), fw_version,
221 priv->fw_var >> 8, priv->fw_var & 0xff);
223 if (priv->fw_var < 0x500)
224 printk(KERN_INFO "%s: you are using an obsolete firmware. "
225 "visit http://wireless.kernel.org/en/users/Drivers/p54 "
226 "and grab one for \"kernel >= 2.6.28\"!\n",
227 wiphy_name(dev->wiphy));
229 if (priv->fw_var >= 0x300) {
230 /* Firmware supports QoS, use it! */
231 priv->tx_stats[4].limit = 3; /* AC_VO */
232 priv->tx_stats[5].limit = 4; /* AC_VI */
233 priv->tx_stats[6].limit = 3; /* AC_BE */
234 priv->tx_stats[7].limit = 2; /* AC_BK */
238 if (!modparam_nohwcrypt)
239 printk(KERN_INFO "%s: cryptographic accelerator "
240 "WEP:%s, TKIP:%s, CCMP:%s\n",
241 wiphy_name(dev->wiphy),
242 (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
243 "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
244 BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
245 (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
250 EXPORT_SYMBOL_GPL(p54_parse_firmware);
252 static int p54_convert_rev0(struct ieee80211_hw *dev,
253 struct pda_pa_curve_data *curve_data)
255 struct p54_common *priv = dev->priv;
256 struct p54_pa_curve_data_sample *dst;
257 struct pda_pa_curve_data_sample_rev0 *src;
258 size_t cd_len = sizeof(*curve_data) +
259 (curve_data->points_per_channel*sizeof(*dst) + 2) *
260 curve_data->channels;
262 void *source, *target;
264 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
265 if (!priv->curve_data)
268 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
269 source = curve_data->data;
270 target = priv->curve_data->data;
271 for (i = 0; i < curve_data->channels; i++) {
272 __le16 *freq = source;
273 source += sizeof(__le16);
274 *((__le16 *)target) = *freq;
275 target += sizeof(__le16);
276 for (j = 0; j < curve_data->points_per_channel; j++) {
280 dst->rf_power = src->rf_power;
281 dst->pa_detector = src->pa_detector;
282 dst->data_64qam = src->pcv;
283 /* "invent" the points for the other modulations */
284 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
285 dst->data_16qam = SUB(src->pcv, 12);
286 dst->data_qpsk = SUB(dst->data_16qam, 12);
287 dst->data_bpsk = SUB(dst->data_qpsk, 12);
288 dst->data_barker = SUB(dst->data_bpsk, 14);
290 target += sizeof(*dst);
291 source += sizeof(*src);
298 static int p54_convert_rev1(struct ieee80211_hw *dev,
299 struct pda_pa_curve_data *curve_data)
301 struct p54_common *priv = dev->priv;
302 struct p54_pa_curve_data_sample *dst;
303 struct pda_pa_curve_data_sample_rev1 *src;
304 size_t cd_len = sizeof(*curve_data) +
305 (curve_data->points_per_channel*sizeof(*dst) + 2) *
306 curve_data->channels;
308 void *source, *target;
310 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
311 if (!priv->curve_data)
314 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
315 source = curve_data->data;
316 target = priv->curve_data->data;
317 for (i = 0; i < curve_data->channels; i++) {
318 __le16 *freq = source;
319 source += sizeof(__le16);
320 *((__le16 *)target) = *freq;
321 target += sizeof(__le16);
322 for (j = 0; j < curve_data->points_per_channel; j++) {
323 memcpy(target, source, sizeof(*src));
325 target += sizeof(*dst);
326 source += sizeof(*src);
334 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
335 "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
336 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
338 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
340 struct p54_common *priv = dev->priv;
341 struct eeprom_pda_wrap *wrap = NULL;
342 struct pda_entry *entry;
343 unsigned int data_len, entry_len;
346 u8 *end = (u8 *)eeprom + len;
349 wrap = (struct eeprom_pda_wrap *) eeprom;
350 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
352 /* verify that at least the entry length/code fits */
353 while ((u8 *)entry <= end - sizeof(*entry)) {
354 entry_len = le16_to_cpu(entry->len);
355 data_len = ((entry_len - 1) << 1);
357 /* abort if entry exceeds whole structure */
358 if ((u8 *)entry + sizeof(*entry) + data_len > end)
361 switch (le16_to_cpu(entry->code)) {
362 case PDR_MAC_ADDRESS:
363 SET_IEEE80211_PERM_ADDR(dev, entry->data);
365 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
371 if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
376 priv->output_limit = kmalloc(entry->data[1] *
377 sizeof(*priv->output_limit), GFP_KERNEL);
379 if (!priv->output_limit) {
384 memcpy(priv->output_limit, &entry->data[2],
385 entry->data[1]*sizeof(*priv->output_limit));
386 priv->output_limit_len = entry->data[1];
388 case PDR_PRISM_PA_CAL_CURVE_DATA: {
389 struct pda_pa_curve_data *curve_data =
390 (struct pda_pa_curve_data *)entry->data;
391 if (data_len < sizeof(*curve_data)) {
396 switch (curve_data->cal_method_rev) {
398 err = p54_convert_rev0(dev, curve_data);
401 err = p54_convert_rev1(dev, curve_data);
404 printk(KERN_ERR "%s: unknown curve data "
406 wiphy_name(dev->wiphy),
407 curve_data->cal_method_rev);
415 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
416 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
417 if (!priv->iq_autocal) {
422 memcpy(priv->iq_autocal, entry->data, data_len);
423 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
425 case PDR_INTERFACE_LIST:
427 while ((u8 *)tmp < entry->data + data_len) {
428 struct bootrec_exp_if *exp_if = tmp;
429 if (le16_to_cpu(exp_if->if_id) == 0xf)
430 synth = le16_to_cpu(exp_if->variant);
431 tmp += sizeof(struct bootrec_exp_if);
434 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
435 priv->version = *(u8 *)(entry->data + 1);
438 /* make it overrun */
441 case PDR_MANUFACTURING_PART_NUMBER:
442 case PDR_PDA_VERSION:
443 case PDR_NIC_SERIAL_NUMBER:
444 case PDR_REGULATORY_DOMAIN_LIST:
445 case PDR_TEMPERATURE_TYPE:
446 case PDR_PRISM_PCI_IDENTIFIER:
447 case PDR_COUNTRY_INFORMATION:
449 case PDR_PRODUCT_NAME:
450 case PDR_UTF8_OEM_NAME:
451 case PDR_UTF8_PRODUCT_NAME:
452 case PDR_COUNTRY_LIST:
453 case PDR_DEFAULT_COUNTRY:
454 case PDR_ANTENNA_GAIN:
455 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
456 case PDR_RSSI_LINEAR_APPROXIMATION:
457 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
458 case PDR_REGULATORY_POWER_LIMITS:
459 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
460 case PDR_RADIATED_TRANSMISSION_CORRECTION:
461 case PDR_PRISM_TX_IQ_CALIBRATION:
462 case PDR_BASEBAND_REGISTERS:
463 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
466 printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
467 wiphy_name(dev->wiphy),
468 le16_to_cpu(entry->code));
472 entry = (void *)entry + (entry_len + 1)*2;
475 if (!synth || !priv->iq_autocal || !priv->output_limit ||
477 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
478 wiphy_name(dev->wiphy));
483 priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
485 p54_init_xbow_synth(dev);
486 if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
487 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
488 if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
489 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
491 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
492 u8 perm_addr[ETH_ALEN];
494 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
495 wiphy_name(dev->wiphy));
496 random_ether_addr(perm_addr);
497 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
500 printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
501 wiphy_name(dev->wiphy),
502 dev->wiphy->perm_addr,
503 priv->version, p54_rf_chips[priv->rxhw]);
508 if (priv->iq_autocal) {
509 kfree(priv->iq_autocal);
510 priv->iq_autocal = NULL;
513 if (priv->output_limit) {
514 kfree(priv->output_limit);
515 priv->output_limit = NULL;
518 if (priv->curve_data) {
519 kfree(priv->curve_data);
520 priv->curve_data = NULL;
523 printk(KERN_ERR "%s: eeprom parse failed!\n",
524 wiphy_name(dev->wiphy));
528 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
530 /* TODO: get the rssi_add & rssi_mul data from the eeprom */
531 return ((rssi * 0x83) / 64 - 400) / 4;
534 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
536 struct p54_common *priv = dev->priv;
537 struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
538 struct ieee80211_rx_status rx_status = {0};
539 u16 freq = le16_to_cpu(hdr->freq);
540 size_t header_len = sizeof(*hdr);
543 if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
544 if (priv->filter_flags & FIF_FCSFAIL)
545 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
550 if (hdr->decrypt_status == P54_DECRYPT_OK)
551 rx_status.flag |= RX_FLAG_DECRYPTED;
552 if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
553 (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
554 rx_status.flag |= RX_FLAG_MMIC_ERROR;
556 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
557 rx_status.noise = priv->noise;
559 rx_status.qual = (100 * hdr->rssi) / 127;
560 if (hdr->rate & 0x10)
561 rx_status.flag |= RX_FLAG_SHORTPRE;
562 rx_status.rate_idx = (dev->conf.channel->band == IEEE80211_BAND_2GHZ ?
563 hdr->rate : (hdr->rate - 4)) & 0xf;
564 rx_status.freq = freq;
565 rx_status.band = dev->conf.channel->band;
566 rx_status.antenna = hdr->antenna;
568 tsf32 = le32_to_cpu(hdr->tsf32);
569 if (tsf32 < priv->tsf_low32)
571 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
572 priv->tsf_low32 = tsf32;
574 rx_status.flag |= RX_FLAG_TSFT;
576 if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
577 header_len += hdr->align[0];
579 skb_pull(skb, header_len);
580 skb_trim(skb, le16_to_cpu(hdr->len));
582 ieee80211_rx_irqsafe(dev, skb, &rx_status);
587 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
589 struct p54_common *priv = dev->priv;
592 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
595 for (i = 0; i < dev->queues; i++)
596 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
597 ieee80211_wake_queue(dev, i);
600 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
602 struct p54_common *priv = dev->priv;
603 struct ieee80211_tx_info *info;
604 struct memrecord *range;
606 u32 freed = 0, last_addr = priv->rx_start;
608 if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
611 spin_lock_irqsave(&priv->tx_queue.lock, flags);
612 info = IEEE80211_SKB_CB(skb);
613 range = (void *)info->rate_driver_data;
614 if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
615 struct ieee80211_tx_info *ni;
616 struct memrecord *mr;
618 ni = IEEE80211_SKB_CB(skb->prev);
619 mr = (struct memrecord *)ni->rate_driver_data;
620 last_addr = mr->end_addr;
622 if (skb->next != (struct sk_buff *)&priv->tx_queue) {
623 struct ieee80211_tx_info *ni;
624 struct memrecord *mr;
626 ni = IEEE80211_SKB_CB(skb->next);
627 mr = (struct memrecord *)ni->rate_driver_data;
628 freed = mr->start_addr - last_addr;
630 freed = priv->rx_end - last_addr;
631 __skb_unlink(skb, &priv->tx_queue);
632 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
635 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
636 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
637 p54_wake_free_queues(dev);
639 EXPORT_SYMBOL_GPL(p54_free_skb);
641 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
643 struct p54_common *priv = dev->priv;
644 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
645 struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
646 struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
647 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
648 struct memrecord *range = NULL;
650 u32 last_addr = priv->rx_start;
654 spin_lock_irqsave(&priv->tx_queue.lock, flags);
655 while (entry != (struct sk_buff *)&priv->tx_queue) {
656 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
657 struct p54_hdr *entry_hdr;
658 struct p54_tx_data *entry_data;
661 range = (void *)info->rate_driver_data;
662 if (range->start_addr != addr) {
663 last_addr = range->end_addr;
668 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
669 struct ieee80211_tx_info *ni;
670 struct memrecord *mr;
672 ni = IEEE80211_SKB_CB(entry->next);
673 mr = (struct memrecord *)ni->rate_driver_data;
674 freed = mr->start_addr - last_addr;
676 freed = priv->rx_end - last_addr;
678 last_addr = range->end_addr;
679 __skb_unlink(entry, &priv->tx_queue);
680 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
682 entry_hdr = (struct p54_hdr *) entry->data;
683 entry_data = (struct p54_tx_data *) entry_hdr->data;
684 priv->tx_stats[entry_data->hw_queue].len--;
686 if (unlikely(entry == priv->cached_beacon)) {
688 priv->cached_beacon = NULL;
693 * Clear manually, ieee80211_tx_info_clear_status would
694 * clear the counts too and we need them.
696 memset(&info->status.ampdu_ack_len, 0,
697 sizeof(struct ieee80211_tx_info) -
698 offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
699 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
700 status.ampdu_ack_len) != 23);
702 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
703 pad = entry_data->align[0];
705 /* walk through the rates array and adjust the counts */
706 count = payload->tries;
707 for (idx = 0; idx < 4; idx++) {
708 if (count >= info->status.rates[idx].count) {
709 count -= info->status.rates[idx].count;
710 } else if (count > 0) {
711 info->status.rates[idx].count = count;
714 info->status.rates[idx].idx = -1;
715 info->status.rates[idx].count = 0;
719 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
721 info->flags |= IEEE80211_TX_STAT_ACK;
722 if (payload->status & P54_TX_PSM_CANCELLED)
723 info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
724 info->status.ack_signal = p54_rssi_to_dbm(dev,
725 (int)payload->ack_rssi);
726 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
727 ieee80211_tx_status_irqsafe(dev, entry);
730 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
733 if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
734 IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
735 p54_wake_free_queues(dev);
738 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
741 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
742 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
743 struct p54_common *priv = dev->priv;
748 if (priv->fw_var >= 0x509) {
749 memcpy(priv->eeprom, eeprom->v2.data,
750 le16_to_cpu(eeprom->v2.len));
752 memcpy(priv->eeprom, eeprom->v1.data,
753 le16_to_cpu(eeprom->v1.len));
756 complete(&priv->eeprom_comp);
759 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
761 struct p54_common *priv = dev->priv;
762 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
763 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
764 u32 tsf32 = le32_to_cpu(stats->tsf32);
766 if (tsf32 < priv->tsf_low32)
768 priv->tsf_low32 = tsf32;
770 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
771 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
772 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
774 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
775 complete(&priv->stats_comp);
777 mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
780 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
782 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
783 struct p54_trap *trap = (struct p54_trap *) hdr->data;
784 u16 event = le16_to_cpu(trap->event);
785 u16 freq = le16_to_cpu(trap->frequency);
788 case P54_TRAP_BEACON_TX:
791 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
792 wiphy_name(dev->wiphy), freq);
794 case P54_TRAP_NO_BEACON:
803 printk(KERN_INFO "%s: received event:%x freq:%d\n",
804 wiphy_name(dev->wiphy), event, freq);
809 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
811 struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
813 switch (le16_to_cpu(hdr->type)) {
814 case P54_CONTROL_TYPE_TXDONE:
815 p54_rx_frame_sent(dev, skb);
817 case P54_CONTROL_TYPE_TRAP:
818 p54_rx_trap(dev, skb);
820 case P54_CONTROL_TYPE_BBP:
822 case P54_CONTROL_TYPE_STAT_READBACK:
823 p54_rx_stats(dev, skb);
825 case P54_CONTROL_TYPE_EEPROM_READBACK:
826 p54_rx_eeprom_readback(dev, skb);
829 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
830 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
837 /* returns zero if skb can be reused */
838 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
840 u16 type = le16_to_cpu(*((__le16 *)skb->data));
842 if (type & P54_HDR_FLAG_CONTROL)
843 return p54_rx_control(dev, skb);
845 return p54_rx_data(dev, skb);
847 EXPORT_SYMBOL_GPL(p54_rx);
850 * So, the firmware is somewhat stupid and doesn't know what places in its
851 * memory incoming data should go to. By poking around in the firmware, we
852 * can find some unused memory to upload our packets to. However, data that we
853 * want the card to TX needs to stay intact until the card has told us that
854 * it is done with it. This function finds empty places we can upload to and
855 * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
858 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
859 struct p54_hdr *data, u32 len)
861 struct p54_common *priv = dev->priv;
862 struct sk_buff *entry = priv->tx_queue.next;
863 struct sk_buff *target_skb = NULL;
864 struct ieee80211_tx_info *info;
865 struct memrecord *range;
866 u32 last_addr = priv->rx_start;
867 u32 largest_hole = 0;
868 u32 target_addr = priv->rx_start;
871 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
876 spin_lock_irqsave(&priv->tx_queue.lock, flags);
877 left = skb_queue_len(&priv->tx_queue);
880 info = IEEE80211_SKB_CB(entry);
881 range = (void *)info->rate_driver_data;
882 hole_size = range->start_addr - last_addr;
883 if (!target_skb && hole_size >= len) {
884 target_skb = entry->prev;
886 target_addr = last_addr;
888 largest_hole = max(largest_hole, hole_size);
889 last_addr = range->end_addr;
892 if (!target_skb && priv->rx_end - last_addr >= len) {
893 target_skb = priv->tx_queue.prev;
894 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
895 if (!skb_queue_empty(&priv->tx_queue)) {
896 info = IEEE80211_SKB_CB(target_skb);
897 range = (void *)info->rate_driver_data;
898 target_addr = range->end_addr;
901 largest_hole = max(largest_hole, priv->rx_end - last_addr);
904 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
905 ieee80211_stop_queues(dev);
909 info = IEEE80211_SKB_CB(skb);
910 range = (void *)info->rate_driver_data;
911 range->start_addr = target_addr;
912 range->end_addr = target_addr + len;
913 __skb_queue_after(&priv->tx_queue, target_skb, skb);
914 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
916 if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
917 48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
918 ieee80211_stop_queues(dev);
920 data->req_id = cpu_to_le32(target_addr + priv->headroom);
924 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
925 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
927 struct p54_common *priv = dev->priv;
931 skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
934 skb_reserve(skb, priv->tx_hdr_len);
936 hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
937 hdr->flags = cpu_to_le16(hdr_flags);
938 hdr->len = cpu_to_le16(len - sizeof(*hdr));
939 hdr->type = cpu_to_le16(type);
940 hdr->tries = hdr->rts_tries = 0;
942 if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
949 int p54_read_eeprom(struct ieee80211_hw *dev)
951 struct p54_common *priv = dev->priv;
952 struct p54_hdr *hdr = NULL;
953 struct p54_eeprom_lm86 *eeprom_hdr;
955 size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
959 maxblocksize = EEPROM_READBACK_LEN;
960 if (priv->fw_var >= 0x509)
965 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
966 sizeof(*eeprom_hdr) + maxblocksize,
967 P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
970 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
973 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
977 eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
978 sizeof(*eeprom_hdr) + maxblocksize);
980 while (eeprom_size) {
981 blocksize = min(eeprom_size, maxblocksize);
982 if (priv->fw_var < 0x509) {
983 eeprom_hdr->v1.offset = cpu_to_le16(offset);
984 eeprom_hdr->v1.len = cpu_to_le16(blocksize);
986 eeprom_hdr->v2.offset = cpu_to_le32(offset);
987 eeprom_hdr->v2.len = cpu_to_le16(blocksize);
988 eeprom_hdr->v2.magic2 = 0xf;
989 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
991 priv->tx(dev, skb, 0);
993 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
994 printk(KERN_ERR "%s: device does not respond!\n",
995 wiphy_name(dev->wiphy));
1000 memcpy(eeprom + offset, priv->eeprom, blocksize);
1001 offset += blocksize;
1002 eeprom_size -= blocksize;
1005 ret = p54_parse_eeprom(dev, eeprom, offset);
1007 kfree(priv->eeprom);
1008 priv->eeprom = NULL;
1009 p54_free_skb(dev, skb);
1014 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1016 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1019 struct p54_common *priv = dev->priv;
1020 struct sk_buff *skb;
1021 struct p54_tim *tim;
1023 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1024 sizeof(struct p54_hdr) + sizeof(*tim),
1025 P54_CONTROL_TYPE_TIM, GFP_KERNEL);
1029 tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1031 tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1032 priv->tx(dev, skb, 1);
1036 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1038 struct p54_common *priv = dev->priv;
1039 struct sk_buff *skb;
1040 struct p54_sta_unlock *sta;
1042 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1043 sizeof(struct p54_hdr) + sizeof(*sta),
1044 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1048 sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1049 memcpy(sta->addr, addr, ETH_ALEN);
1050 priv->tx(dev, skb, 1);
1054 static void p54_sta_notify_ps(struct ieee80211_hw *dev,
1055 enum sta_notify_ps_cmd notify_cmd,
1056 struct ieee80211_sta *sta)
1058 switch (notify_cmd) {
1059 case STA_NOTIFY_AWAKE:
1060 p54_sta_unlock(dev, sta->addr);
1067 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1068 enum sta_notify_cmd notify_cmd,
1069 struct ieee80211_sta *sta)
1071 switch (notify_cmd) {
1072 case STA_NOTIFY_ADD:
1073 case STA_NOTIFY_REMOVE:
1075 * Notify the firmware that we don't want or we don't
1076 * need to buffer frames for this station anymore.
1079 p54_sta_unlock(dev, sta->addr);
1086 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1088 struct p54_common *priv = dev->priv;
1089 struct sk_buff *skb;
1090 struct p54_hdr *hdr;
1091 struct p54_txcancel *cancel;
1093 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1094 sizeof(struct p54_hdr) + sizeof(*cancel),
1095 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1099 hdr = (void *)entry->data;
1100 cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1101 cancel->req_id = hdr->req_id;
1102 priv->tx(dev, skb, 1);
1106 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1107 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1108 u16 *flags, u16 *aid)
1110 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1111 struct p54_common *priv = dev->priv;
1114 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1115 if (ieee80211_is_beacon(hdr->frame_control)) {
1118 *extra_len = IEEE80211_MAX_TIM_LEN;
1119 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1121 } else if (ieee80211_is_probe_resp(hdr->frame_control)) {
1124 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1125 P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1136 switch (priv->mode) {
1137 case NL80211_IFTYPE_STATION:
1140 case NL80211_IFTYPE_AP:
1141 case NL80211_IFTYPE_ADHOC:
1142 case NL80211_IFTYPE_MESH_POINT:
1143 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1148 if (info->control.sta)
1149 *aid = info->control.sta->aid;
1151 *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1156 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1160 return P54_CRYPTO_WEP;
1162 return P54_CRYPTO_TKIPMICHAEL;
1164 return P54_CRYPTO_AESCCMP;
1170 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1172 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1173 struct ieee80211_tx_queue_stats *current_queue = NULL;
1174 struct p54_common *priv = dev->priv;
1175 struct p54_hdr *hdr;
1176 struct p54_tx_data *txhdr;
1177 size_t padding, len, tim_len = 0;
1178 int i, j, ridx, ret;
1179 u16 hdr_flags = 0, aid = 0;
1180 u8 rate, queue, crypt_offset = 0;
1183 u8 calculated_tries[4];
1184 u8 nrates = 0, nremaining = 8;
1186 queue = skb_get_queue_mapping(skb);
1188 ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1189 current_queue = &priv->tx_stats[queue];
1190 if (unlikely((current_queue->len > current_queue->limit) && ret))
1191 return NETDEV_TX_BUSY;
1192 current_queue->len++;
1193 current_queue->count++;
1194 if ((current_queue->len == current_queue->limit) && ret)
1195 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1197 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1200 if (info->control.hw_key) {
1201 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1202 if (info->control.hw_key->alg == ALG_TKIP) {
1203 u8 *iv = (u8 *)(skb->data + crypt_offset);
1205 * The firmware excepts that the IV has to have
1206 * this special format
1214 txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1215 hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1218 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1219 hdr->type = cpu_to_le16(aid);
1220 hdr->rts_tries = info->control.rates[0].count;
1223 * we register the rates in perfect order, and
1224 * RTS/CTS won't happen on 5 GHz
1226 cts_rate = info->control.rts_cts_rate_idx;
1228 memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1230 /* see how many rates got used */
1231 for (i = 0; i < 4; i++) {
1232 if (info->control.rates[i].idx < 0)
1237 /* limit tries to 8/nrates per rate */
1238 for (i = 0; i < nrates; i++) {
1240 * The magic expression here is equivalent to 8/nrates for
1241 * all values that matter, but avoids division and jumps.
1242 * Note that nrates can only take the values 1 through 4.
1244 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1245 info->control.rates[i].count);
1246 nremaining -= calculated_tries[i];
1249 /* if there are tries left, distribute from back to front */
1250 for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1251 int tmp = info->control.rates[i].count - calculated_tries[i];
1255 /* RC requested more tries at this rate */
1257 tmp = min_t(int, tmp, nremaining);
1258 calculated_tries[i] += tmp;
1263 for (i = 0; i < nrates && ridx < 8; i++) {
1264 /* we register the rates in perfect order */
1265 rate = info->control.rates[i].idx;
1266 if (info->band == IEEE80211_BAND_5GHZ)
1269 /* store the count we actually calculated for TX status */
1270 info->control.rates[i].count = calculated_tries[i];
1272 rc_flags = info->control.rates[i].flags;
1273 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1277 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1279 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1281 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1282 txhdr->rateset[ridx] = rate;
1287 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1288 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1290 /* TODO: enable bursting */
1291 hdr->flags = cpu_to_le16(hdr_flags);
1293 txhdr->rts_rate_idx = 0;
1294 if (info->control.hw_key) {
1295 crypt_offset += info->control.hw_key->iv_len;
1296 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1297 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1298 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1299 if (info->control.hw_key->alg == ALG_TKIP) {
1300 if (unlikely(skb_tailroom(skb) < 12))
1302 /* reserve space for the MIC key */
1304 memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1305 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1307 /* reserve some space for ICV */
1308 len += info->control.hw_key->icv_len;
1310 txhdr->key_type = 0;
1313 txhdr->crypt_offset = crypt_offset;
1314 txhdr->hw_queue = queue;
1316 txhdr->backlog = current_queue->len;
1319 memset(txhdr->durations, 0, sizeof(txhdr->durations));
1320 txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
1321 2 : info->antenna_sel_tx - 1;
1322 txhdr->output_power = priv->output_power;
1323 txhdr->cts_rate = cts_rate;
1325 txhdr->align[0] = padding;
1327 hdr->len = cpu_to_le16(len);
1328 /* modifies skb->cb and with it info, so must be last! */
1329 if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1331 priv->tx(dev, skb, 0);
1335 skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1336 if (current_queue) {
1337 current_queue->len--;
1338 current_queue->count--;
1340 return NETDEV_TX_BUSY;
1343 static int p54_setup_mac(struct ieee80211_hw *dev)
1345 struct p54_common *priv = dev->priv;
1346 struct sk_buff *skb;
1347 struct p54_setup_mac *setup;
1350 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1351 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1356 setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1357 if (dev->conf.radio_enabled) {
1358 switch (priv->mode) {
1359 case NL80211_IFTYPE_STATION:
1360 mode = P54_FILTER_TYPE_STATION;
1362 case NL80211_IFTYPE_AP:
1363 mode = P54_FILTER_TYPE_AP;
1365 case NL80211_IFTYPE_ADHOC:
1366 case NL80211_IFTYPE_MESH_POINT:
1367 mode = P54_FILTER_TYPE_IBSS;
1370 mode = P54_FILTER_TYPE_NONE;
1373 if (priv->filter_flags & FIF_PROMISC_IN_BSS)
1374 mode |= P54_FILTER_TYPE_TRANSPARENT;
1376 mode = P54_FILTER_TYPE_RX_DISABLED;
1378 setup->mac_mode = cpu_to_le16(mode);
1379 memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1380 memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1381 setup->rx_antenna = 2; /* automatic */
1382 setup->rx_align = 0;
1383 if (priv->fw_var < 0x500) {
1384 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1385 memset(setup->v1.rts_rates, 0, 8);
1386 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1387 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1388 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1389 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1390 setup->v1.unalloc0 = cpu_to_le16(0);
1392 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1393 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1394 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1395 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1396 setup->v2.truncate = cpu_to_le16(48896);
1397 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1398 setup->v2.sbss_offset = 0;
1399 setup->v2.mcast_window = 0;
1400 setup->v2.rx_rssi_threshold = 0;
1401 setup->v2.rx_ed_threshold = 0;
1402 setup->v2.ref_clock = cpu_to_le32(644245094);
1403 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1404 setup->v2.osc_start_delay = cpu_to_le16(65535);
1406 priv->tx(dev, skb, 1);
1410 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell,
1413 struct p54_common *priv = dev->priv;
1414 struct sk_buff *skb;
1415 struct p54_scan *chan;
1418 __le16 freq = cpu_to_le16(frequency);
1420 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1421 sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1426 chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1427 memset(chan->padding1, 0, sizeof(chan->padding1));
1428 chan->mode = cpu_to_le16(mode);
1429 chan->dwell = cpu_to_le16(dwell);
1431 for (i = 0; i < priv->iq_autocal_len; i++) {
1432 if (priv->iq_autocal[i].freq != freq)
1435 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1436 sizeof(*priv->iq_autocal));
1439 if (i == priv->iq_autocal_len)
1442 for (i = 0; i < priv->output_limit_len; i++) {
1443 if (priv->output_limit[i].freq != freq)
1446 chan->val_barker = 0x38;
1447 chan->val_bpsk = chan->dup_bpsk =
1448 priv->output_limit[i].val_bpsk;
1449 chan->val_qpsk = chan->dup_qpsk =
1450 priv->output_limit[i].val_qpsk;
1451 chan->val_16qam = chan->dup_16qam =
1452 priv->output_limit[i].val_16qam;
1453 chan->val_64qam = chan->dup_64qam =
1454 priv->output_limit[i].val_64qam;
1457 if (i == priv->output_limit_len)
1460 entry = priv->curve_data->data;
1461 for (i = 0; i < priv->curve_data->channels; i++) {
1462 if (*((__le16 *)entry) != freq) {
1463 entry += sizeof(__le16);
1464 entry += sizeof(struct p54_pa_curve_data_sample) *
1465 priv->curve_data->points_per_channel;
1469 entry += sizeof(__le16);
1470 chan->pa_points_per_curve = 8;
1471 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1472 memcpy(chan->curve_data, entry,
1473 sizeof(struct p54_pa_curve_data_sample) *
1474 min((u8)8, priv->curve_data->points_per_channel));
1478 if (priv->fw_var < 0x500) {
1479 chan->v1.rssical_mul = cpu_to_le16(130);
1480 chan->v1.rssical_add = cpu_to_le16(0xfe70);
1482 chan->v2.rssical_mul = cpu_to_le16(130);
1483 chan->v2.rssical_add = cpu_to_le16(0xfe70);
1484 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1485 memset(chan->v2.rts_rates, 0, 8);
1487 priv->tx(dev, skb, 1);
1491 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1496 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1498 struct p54_common *priv = dev->priv;
1499 struct sk_buff *skb;
1500 struct p54_led *led;
1502 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1503 sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1508 led = (struct p54_led *)skb_put(skb, sizeof(*led));
1509 led->mode = cpu_to_le16(mode);
1510 led->led_permanent = cpu_to_le16(link);
1511 led->led_temporary = cpu_to_le16(act);
1512 led->duration = cpu_to_le16(1000);
1513 priv->tx(dev, skb, 1);
1517 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1519 queue.aifs = cpu_to_le16(ai_fs); \
1520 queue.cwmin = cpu_to_le16(cw_min); \
1521 queue.cwmax = cpu_to_le16(cw_max); \
1522 queue.txop = cpu_to_le16(_txop); \
1525 static int p54_set_edcf(struct ieee80211_hw *dev)
1527 struct p54_common *priv = dev->priv;
1528 struct sk_buff *skb;
1529 struct p54_edcf *edcf;
1531 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1532 sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1537 edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1538 if (priv->use_short_slot) {
1541 edcf->eofpad = 0x00;
1543 edcf->slottime = 20;
1545 edcf->eofpad = 0x06;
1547 /* (see prism54/isl_oid.h for further details) */
1548 edcf->frameburst = cpu_to_le16(0);
1549 edcf->round_trip_delay = cpu_to_le16(0);
1551 memset(edcf->mapping, 0, sizeof(edcf->mapping));
1552 memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1553 priv->tx(dev, skb, 1);
1557 static int p54_init_stats(struct ieee80211_hw *dev)
1559 struct p54_common *priv = dev->priv;
1561 priv->cached_stats = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
1562 sizeof(struct p54_hdr) + sizeof(struct p54_statistics),
1563 P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
1564 if (!priv->cached_stats)
1567 mod_timer(&priv->stats_timer, jiffies + HZ);
1571 static int p54_beacon_tim(struct sk_buff *skb)
1574 * the good excuse for this mess is ... the firmware.
1575 * The dummy TIM MUST be at the end of the beacon frame,
1576 * because it'll be overwritten!
1579 struct ieee80211_mgmt *mgmt = (void *)skb->data;
1582 if (skb->len <= sizeof(mgmt))
1585 pos = (u8 *)mgmt->u.beacon.variable;
1586 end = skb->data + skb->len;
1588 if (pos + 2 + pos[1] > end)
1591 if (pos[0] == WLAN_EID_TIM) {
1592 u8 dtim_len = pos[1];
1593 u8 dtim_period = pos[3];
1594 u8 *next = pos + 2 + dtim_len;
1599 memmove(pos, next, end - next);
1602 skb_trim(skb, skb->len - (dtim_len - 3));
1604 pos = end - (dtim_len + 2);
1606 /* add the dummy at the end */
1607 pos[0] = WLAN_EID_TIM;
1610 pos[3] = dtim_period;
1619 static int p54_beacon_update(struct ieee80211_hw *dev,
1620 struct ieee80211_vif *vif)
1622 struct p54_common *priv = dev->priv;
1623 struct sk_buff *beacon;
1626 if (priv->cached_beacon) {
1627 p54_tx_cancel(dev, priv->cached_beacon);
1628 /* wait for the last beacon the be freed */
1632 beacon = ieee80211_beacon_get(dev, vif);
1635 ret = p54_beacon_tim(beacon);
1638 ret = p54_tx(dev, beacon);
1641 priv->cached_beacon = beacon;
1642 priv->tsf_high32 = 0;
1643 priv->tsf_low32 = 0;
1648 static int p54_start(struct ieee80211_hw *dev)
1650 struct p54_common *priv = dev->priv;
1653 mutex_lock(&priv->conf_mutex);
1654 err = priv->open(dev);
1657 P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1658 P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1659 P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1660 P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1661 err = p54_set_edcf(dev);
1664 err = p54_init_stats(dev);
1668 memset(priv->bssid, ~0, ETH_ALEN);
1669 priv->mode = NL80211_IFTYPE_MONITOR;
1670 err = p54_setup_mac(dev);
1672 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1677 mutex_unlock(&priv->conf_mutex);
1681 static void p54_stop(struct ieee80211_hw *dev)
1683 struct p54_common *priv = dev->priv;
1684 struct sk_buff *skb;
1686 mutex_lock(&priv->conf_mutex);
1687 del_timer(&priv->stats_timer);
1688 p54_free_skb(dev, priv->cached_stats);
1689 priv->cached_stats = NULL;
1690 if (priv->cached_beacon)
1691 p54_tx_cancel(dev, priv->cached_beacon);
1693 while ((skb = skb_dequeue(&priv->tx_queue)))
1696 priv->cached_beacon = NULL;
1698 priv->tsf_high32 = priv->tsf_low32 = 0;
1699 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1700 mutex_unlock(&priv->conf_mutex);
1703 static int p54_add_interface(struct ieee80211_hw *dev,
1704 struct ieee80211_if_init_conf *conf)
1706 struct p54_common *priv = dev->priv;
1708 mutex_lock(&priv->conf_mutex);
1709 if (priv->mode != NL80211_IFTYPE_MONITOR) {
1710 mutex_unlock(&priv->conf_mutex);
1714 switch (conf->type) {
1715 case NL80211_IFTYPE_STATION:
1716 case NL80211_IFTYPE_ADHOC:
1717 case NL80211_IFTYPE_AP:
1718 case NL80211_IFTYPE_MESH_POINT:
1719 priv->mode = conf->type;
1722 mutex_unlock(&priv->conf_mutex);
1726 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1728 p54_set_leds(dev, 1, 0, 0);
1729 mutex_unlock(&priv->conf_mutex);
1733 static void p54_remove_interface(struct ieee80211_hw *dev,
1734 struct ieee80211_if_init_conf *conf)
1736 struct p54_common *priv = dev->priv;
1738 mutex_lock(&priv->conf_mutex);
1739 if (priv->cached_beacon)
1740 p54_tx_cancel(dev, priv->cached_beacon);
1741 priv->mode = NL80211_IFTYPE_MONITOR;
1742 memset(priv->mac_addr, 0, ETH_ALEN);
1743 memset(priv->bssid, 0, ETH_ALEN);
1745 mutex_unlock(&priv->conf_mutex);
1748 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1751 struct p54_common *priv = dev->priv;
1752 struct ieee80211_conf *conf = &dev->conf;
1754 mutex_lock(&priv->conf_mutex);
1755 if (changed & IEEE80211_CONF_CHANGE_POWER)
1756 priv->output_power = conf->power_level << 2;
1757 if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
1758 ret = p54_setup_mac(dev);
1762 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1763 ret = p54_scan(dev, P54_SCAN_EXIT, 0,
1764 conf->channel->center_freq);
1770 mutex_unlock(&priv->conf_mutex);
1774 static int p54_config_interface(struct ieee80211_hw *dev,
1775 struct ieee80211_vif *vif,
1776 struct ieee80211_if_conf *conf)
1778 struct p54_common *priv = dev->priv;
1781 mutex_lock(&priv->conf_mutex);
1782 if (conf->changed & IEEE80211_IFCC_BSSID) {
1783 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1784 ret = p54_setup_mac(dev);
1789 if (conf->changed & IEEE80211_IFCC_BEACON) {
1790 ret = p54_scan(dev, P54_SCAN_EXIT, 0,
1791 dev->conf.channel->center_freq);
1794 ret = p54_setup_mac(dev);
1797 ret = p54_beacon_update(dev, vif);
1800 ret = p54_set_edcf(dev);
1805 ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
1808 mutex_unlock(&priv->conf_mutex);
1812 static void p54_configure_filter(struct ieee80211_hw *dev,
1813 unsigned int changed_flags,
1814 unsigned int *total_flags,
1815 int mc_count, struct dev_mc_list *mclist)
1817 struct p54_common *priv = dev->priv;
1819 *total_flags &= FIF_PROMISC_IN_BSS |
1820 (*total_flags & FIF_PROMISC_IN_BSS) ?
1823 priv->filter_flags = *total_flags;
1825 if (changed_flags & FIF_PROMISC_IN_BSS)
1829 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1830 const struct ieee80211_tx_queue_params *params)
1832 struct p54_common *priv = dev->priv;
1835 mutex_lock(&priv->conf_mutex);
1836 if ((params) && !(queue > 4)) {
1837 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
1838 params->cw_min, params->cw_max, params->txop);
1839 ret = p54_set_edcf(dev);
1842 mutex_unlock(&priv->conf_mutex);
1846 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
1848 struct p54_common *priv = dev->priv;
1849 struct sk_buff *skb;
1850 struct p54_xbow_synth *xbow;
1852 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
1853 sizeof(struct p54_hdr),
1854 P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
1859 xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
1860 xbow->magic1 = cpu_to_le16(0x1);
1861 xbow->magic2 = cpu_to_le16(0x2);
1862 xbow->freq = cpu_to_le16(5390);
1863 memset(xbow->padding, 0, sizeof(xbow->padding));
1864 priv->tx(dev, skb, 1);
1868 static void p54_statistics_timer(unsigned long data)
1870 struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1871 struct p54_common *priv = dev->priv;
1873 BUG_ON(!priv->cached_stats);
1875 priv->tx(dev, priv->cached_stats, 0);
1878 static int p54_get_stats(struct ieee80211_hw *dev,
1879 struct ieee80211_low_level_stats *stats)
1881 struct p54_common *priv = dev->priv;
1883 del_timer(&priv->stats_timer);
1884 p54_statistics_timer((unsigned long)dev);
1886 if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1887 printk(KERN_ERR "%s: device does not respond!\n",
1888 wiphy_name(dev->wiphy));
1892 memcpy(stats, &priv->stats, sizeof(*stats));
1897 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1898 struct ieee80211_tx_queue_stats *stats)
1900 struct p54_common *priv = dev->priv;
1902 memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1907 static void p54_bss_info_changed(struct ieee80211_hw *dev,
1908 struct ieee80211_vif *vif,
1909 struct ieee80211_bss_conf *info,
1912 struct p54_common *priv = dev->priv;
1914 if (changed & BSS_CHANGED_ERP_SLOT) {
1915 priv->use_short_slot = info->use_short_slot;
1918 if (changed & BSS_CHANGED_BASIC_RATES) {
1919 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
1920 priv->basic_rate_mask = (info->basic_rates << 4);
1922 priv->basic_rate_mask = info->basic_rates;
1924 if (priv->fw_var >= 0x500)
1925 p54_scan(dev, P54_SCAN_EXIT, 0,
1926 dev->conf.channel->center_freq);
1928 if (changed & BSS_CHANGED_ASSOC) {
1930 priv->aid = info->aid;
1931 priv->wakeup_timer = info->beacon_int *
1932 info->dtim_period * 5;
1939 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
1940 const u8 *local_address, const u8 *address,
1941 struct ieee80211_key_conf *key)
1943 struct p54_common *priv = dev->priv;
1944 struct sk_buff *skb;
1945 struct p54_keycache *rxkey;
1948 if (modparam_nohwcrypt)
1951 if (cmd == DISABLE_KEY)
1956 if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
1957 BR_DESC_PRIV_CAP_TKIP)))
1959 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1960 algo = P54_CRYPTO_TKIPMICHAEL;
1963 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
1965 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1966 algo = P54_CRYPTO_WEP;
1969 if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
1971 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1972 algo = P54_CRYPTO_AESCCMP;
1979 if (key->keyidx > priv->rx_keycache_size) {
1981 * The device supports the choosen algorithm, but the firmware
1982 * does not provide enough key slots to store all of them.
1983 * So, incoming frames have to be decoded by the mac80211 stack,
1984 * but we can still offload encryption for outgoing frames.
1990 mutex_lock(&priv->conf_mutex);
1991 skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
1992 sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
1995 mutex_unlock(&priv->conf_mutex);
1999 /* TODO: some devices have 4 more free slots for rx keys */
2000 rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2001 rxkey->entry = key->keyidx;
2002 rxkey->key_id = key->keyidx;
2003 rxkey->key_type = algo;
2005 memcpy(rxkey->mac, address, ETH_ALEN);
2007 memset(rxkey->mac, ~0, ETH_ALEN);
2008 if (key->alg != ALG_TKIP) {
2009 rxkey->key_len = min((u8)16, key->keylen);
2010 memcpy(rxkey->key, key->key, rxkey->key_len);
2012 rxkey->key_len = 24;
2013 memcpy(rxkey->key, key->key, 16);
2014 memcpy(&(rxkey->key[16]), &(key->key
2015 [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2018 priv->tx(dev, skb, 1);
2019 mutex_unlock(&priv->conf_mutex);
2023 static const struct ieee80211_ops p54_ops = {
2027 .add_interface = p54_add_interface,
2028 .remove_interface = p54_remove_interface,
2029 .set_tim = p54_set_tim,
2030 .sta_notify_ps = p54_sta_notify_ps,
2031 .sta_notify = p54_sta_notify,
2032 .set_key = p54_set_key,
2033 .config = p54_config,
2034 .config_interface = p54_config_interface,
2035 .bss_info_changed = p54_bss_info_changed,
2036 .configure_filter = p54_configure_filter,
2037 .conf_tx = p54_conf_tx,
2038 .get_stats = p54_get_stats,
2039 .get_tx_stats = p54_get_tx_stats
2042 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2044 struct ieee80211_hw *dev;
2045 struct p54_common *priv;
2047 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2052 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2053 priv->basic_rate_mask = 0x15f;
2054 skb_queue_head_init(&priv->tx_queue);
2055 dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2056 IEEE80211_HW_SIGNAL_DBM |
2057 IEEE80211_HW_NOISE_DBM;
2059 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2060 BIT(NL80211_IFTYPE_ADHOC) |
2061 BIT(NL80211_IFTYPE_AP) |
2062 BIT(NL80211_IFTYPE_MESH_POINT);
2064 dev->channel_change_time = 1000; /* TODO: find actual value */
2065 priv->tx_stats[0].limit = 1; /* Beacon queue */
2066 priv->tx_stats[1].limit = 1; /* Probe queue for HW scan */
2067 priv->tx_stats[2].limit = 3; /* queue for MLMEs */
2068 priv->tx_stats[3].limit = 3; /* Broadcast / MC queue */
2069 priv->tx_stats[4].limit = 5; /* Data */
2073 * We support at most 8 tries no matter which rate they're at,
2074 * we cannot support max_rates * max_rate_tries as we set it
2075 * here, but setting it correctly to 4/2 or so would limit us
2076 * artificially if the RC algorithm wants just two rates, so
2077 * let's say 4/7, we'll redistribute it at TX time, see the
2081 dev->max_rate_tries = 7;
2082 dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2083 sizeof(struct p54_tx_data);
2085 mutex_init(&priv->conf_mutex);
2086 init_completion(&priv->eeprom_comp);
2087 init_completion(&priv->stats_comp);
2088 setup_timer(&priv->stats_timer, p54_statistics_timer,
2089 (unsigned long)dev);
2093 EXPORT_SYMBOL_GPL(p54_init_common);
2095 void p54_free_common(struct ieee80211_hw *dev)
2097 struct p54_common *priv = dev->priv;
2098 del_timer(&priv->stats_timer);
2099 kfree_skb(priv->cached_stats);
2100 kfree(priv->iq_autocal);
2101 kfree(priv->output_limit);
2102 kfree(priv->curve_data);
2104 EXPORT_SYMBOL_GPL(p54_free_common);
2106 static int __init p54_init(void)
2111 static void __exit p54_exit(void)
2115 module_init(p54_init);
2116 module_exit(p54_exit);