3 * Common code for mac80211 Prism54 drivers
5 * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
6 * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
8 * Based on the islsm (softmac prism54) driver, which is:
9 * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/init.h>
17 #include <linux/firmware.h>
18 #include <linux/etherdevice.h>
20 #include <net/mac80211.h>
23 #include "p54common.h"
25 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
26 MODULE_DESCRIPTION("Softmac Prism54 common code");
27 MODULE_LICENSE("GPL");
28 MODULE_ALIAS("prism54common");
30 static struct ieee80211_rate p54_rates[] = {
31 { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
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, },
45 static struct ieee80211_channel p54_channels[] = {
46 { .center_freq = 2412, .hw_value = 1, },
47 { .center_freq = 2417, .hw_value = 2, },
48 { .center_freq = 2422, .hw_value = 3, },
49 { .center_freq = 2427, .hw_value = 4, },
50 { .center_freq = 2432, .hw_value = 5, },
51 { .center_freq = 2437, .hw_value = 6, },
52 { .center_freq = 2442, .hw_value = 7, },
53 { .center_freq = 2447, .hw_value = 8, },
54 { .center_freq = 2452, .hw_value = 9, },
55 { .center_freq = 2457, .hw_value = 10, },
56 { .center_freq = 2462, .hw_value = 11, },
57 { .center_freq = 2467, .hw_value = 12, },
58 { .center_freq = 2472, .hw_value = 13, },
59 { .center_freq = 2484, .hw_value = 14, },
62 static struct ieee80211_supported_band band_2GHz = {
63 .channels = p54_channels,
64 .n_channels = ARRAY_SIZE(p54_channels),
65 .bitrates = p54_rates,
66 .n_bitrates = ARRAY_SIZE(p54_rates),
69 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
71 struct p54_common *priv = dev->priv;
72 struct bootrec_exp_if *exp_if;
73 struct bootrec *bootrec;
74 u32 *data = (u32 *)fw->data;
75 u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
76 u8 *fw_version = NULL;
83 while (data < end_data && *data)
86 while (data < end_data && !*data)
89 bootrec = (struct bootrec *) data;
91 while (bootrec->data <= end_data &&
92 (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
93 u32 code = le32_to_cpu(bootrec->code);
95 case BR_CODE_COMPONENT_ID:
96 priv->fw_interface = be32_to_cpup(bootrec->data);
97 switch (priv->fw_interface) {
99 printk(KERN_INFO "p54: FreeMAC firmware\n");
102 printk(KERN_INFO "p54: LM20 firmware\n");
105 printk(KERN_INFO "p54: LM86 firmware\n");
108 printk(KERN_INFO "p54: LM87 firmware\n");
111 printk(KERN_INFO "p54: unknown firmware\n");
115 case BR_CODE_COMPONENT_VERSION:
116 /* 24 bytes should be enough for all firmwares */
117 if (strnlen((unsigned char*)bootrec->data, 24) < 24)
118 fw_version = (unsigned char*)bootrec->data;
120 case BR_CODE_DESCR: {
121 struct bootrec_desc *desc =
122 (struct bootrec_desc *)bootrec->data;
123 priv->rx_start = le32_to_cpu(desc->rx_start);
124 /* FIXME add sanity checking */
125 priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
126 priv->headroom = desc->headroom;
127 priv->tailroom = desc->tailroom;
128 if (bootrec->len == 11)
129 priv->rx_mtu = (size_t) le16_to_cpu(
130 (__le16)bootrec->data[10]);
132 priv->rx_mtu = (size_t)
133 0x620 - priv->tx_hdr_len;
136 case BR_CODE_EXPOSED_IF:
137 exp_if = (struct bootrec_exp_if *) bootrec->data;
138 for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
139 if (exp_if[i].if_id == cpu_to_le16(0x1a))
140 priv->fw_var = le16_to_cpu(exp_if[i].variant);
142 case BR_CODE_DEPENDENT_IF:
144 case BR_CODE_END_OF_BRA:
145 case LEGACY_BR_CODE_END_OF_BRA:
151 bootrec = (struct bootrec *)&bootrec->data[len];
155 printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
156 fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
158 if (priv->fw_var >= 0x300) {
159 /* Firmware supports QoS, use it! */
160 priv->tx_stats[4].limit = 3;
161 priv->tx_stats[5].limit = 4;
162 priv->tx_stats[6].limit = 3;
163 priv->tx_stats[7].limit = 1;
169 EXPORT_SYMBOL_GPL(p54_parse_firmware);
171 static int p54_convert_rev0(struct ieee80211_hw *dev,
172 struct pda_pa_curve_data *curve_data)
174 struct p54_common *priv = dev->priv;
175 struct p54_pa_curve_data_sample *dst;
176 struct pda_pa_curve_data_sample_rev0 *src;
177 size_t cd_len = sizeof(*curve_data) +
178 (curve_data->points_per_channel*sizeof(*dst) + 2) *
179 curve_data->channels;
181 void *source, *target;
183 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
184 if (!priv->curve_data)
187 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
188 source = curve_data->data;
189 target = priv->curve_data->data;
190 for (i = 0; i < curve_data->channels; i++) {
191 __le16 *freq = source;
192 source += sizeof(__le16);
193 *((__le16 *)target) = *freq;
194 target += sizeof(__le16);
195 for (j = 0; j < curve_data->points_per_channel; j++) {
199 dst->rf_power = src->rf_power;
200 dst->pa_detector = src->pa_detector;
201 dst->data_64qam = src->pcv;
202 /* "invent" the points for the other modulations */
203 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
204 dst->data_16qam = SUB(src->pcv, 12);
205 dst->data_qpsk = SUB(dst->data_16qam, 12);
206 dst->data_bpsk = SUB(dst->data_qpsk, 12);
207 dst->data_barker = SUB(dst->data_bpsk, 14);
209 target += sizeof(*dst);
210 source += sizeof(*src);
217 static int p54_convert_rev1(struct ieee80211_hw *dev,
218 struct pda_pa_curve_data *curve_data)
220 struct p54_common *priv = dev->priv;
221 struct p54_pa_curve_data_sample *dst;
222 struct pda_pa_curve_data_sample_rev1 *src;
223 size_t cd_len = sizeof(*curve_data) +
224 (curve_data->points_per_channel*sizeof(*dst) + 2) *
225 curve_data->channels;
227 void *source, *target;
229 priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
230 if (!priv->curve_data)
233 memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
234 source = curve_data->data;
235 target = priv->curve_data->data;
236 for (i = 0; i < curve_data->channels; i++) {
237 __le16 *freq = source;
238 source += sizeof(__le16);
239 *((__le16 *)target) = *freq;
240 target += sizeof(__le16);
241 for (j = 0; j < curve_data->points_per_channel; j++) {
242 memcpy(target, source, sizeof(*src));
244 target += sizeof(*dst);
245 source += sizeof(*src);
253 const char* p54_rf_chips[] = { "NULL", "Indigo?", "Duette",
254 "Frisbee", "Xbow", "Longbow" };
256 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
258 struct p54_common *priv = dev->priv;
259 struct eeprom_pda_wrap *wrap = NULL;
260 struct pda_entry *entry;
261 unsigned int data_len, entry_len;
264 u8 *end = (u8 *)eeprom + len;
265 DECLARE_MAC_BUF(mac);
267 wrap = (struct eeprom_pda_wrap *) eeprom;
268 entry = (void *)wrap->data + le16_to_cpu(wrap->len);
270 /* verify that at least the entry length/code fits */
271 while ((u8 *)entry <= end - sizeof(*entry)) {
272 entry_len = le16_to_cpu(entry->len);
273 data_len = ((entry_len - 1) << 1);
275 /* abort if entry exceeds whole structure */
276 if ((u8 *)entry + sizeof(*entry) + data_len > end)
279 switch (le16_to_cpu(entry->code)) {
280 case PDR_MAC_ADDRESS:
281 SET_IEEE80211_PERM_ADDR(dev, entry->data);
283 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
289 if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
294 priv->output_limit = kmalloc(entry->data[1] *
295 sizeof(*priv->output_limit), GFP_KERNEL);
297 if (!priv->output_limit) {
302 memcpy(priv->output_limit, &entry->data[2],
303 entry->data[1]*sizeof(*priv->output_limit));
304 priv->output_limit_len = entry->data[1];
306 case PDR_PRISM_PA_CAL_CURVE_DATA: {
307 struct pda_pa_curve_data *curve_data =
308 (struct pda_pa_curve_data *)entry->data;
309 if (data_len < sizeof(*curve_data)) {
314 switch (curve_data->cal_method_rev) {
316 err = p54_convert_rev0(dev, curve_data);
319 err = p54_convert_rev1(dev, curve_data);
322 printk(KERN_ERR "p54: unknown curve data "
324 curve_data->cal_method_rev);
332 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
333 priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
334 if (!priv->iq_autocal) {
339 memcpy(priv->iq_autocal, entry->data, data_len);
340 priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
342 case PDR_INTERFACE_LIST:
344 while ((u8 *)tmp < entry->data + data_len) {
345 struct bootrec_exp_if *exp_if = tmp;
346 if (le16_to_cpu(exp_if->if_id) == 0xF)
347 priv->rxhw = le16_to_cpu(exp_if->variant) & 0x07;
348 tmp += sizeof(struct bootrec_exp_if);
351 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
352 priv->version = *(u8 *)(entry->data + 1);
355 /* make it overrun */
359 printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
360 le16_to_cpu(entry->code));
364 entry = (void *)entry + (entry_len + 1)*2;
367 if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
368 printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
373 switch (priv->rxhw) {
375 case 1: /* Indigo? */
377 /* TODO: 5GHz initialization goes here */
379 case 3: /* Frisbee */
380 case 5: /* Longbow */
381 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
384 printk(KERN_ERR "%s: unsupported RF-Chip\n",
385 wiphy_name(dev->wiphy));
390 if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
391 u8 perm_addr[ETH_ALEN];
393 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
394 wiphy_name(dev->wiphy));
395 random_ether_addr(perm_addr);
396 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
399 printk(KERN_INFO "%s: hwaddr %s, MAC:isl38%02x RF:%s\n",
400 wiphy_name(dev->wiphy),
401 print_mac(mac, dev->wiphy->perm_addr),
402 priv->version, p54_rf_chips[priv->rxhw]);
407 if (priv->iq_autocal) {
408 kfree(priv->iq_autocal);
409 priv->iq_autocal = NULL;
412 if (priv->output_limit) {
413 kfree(priv->output_limit);
414 priv->output_limit = NULL;
417 if (priv->curve_data) {
418 kfree(priv->curve_data);
419 priv->curve_data = NULL;
422 printk(KERN_ERR "p54: eeprom parse failed!\n");
425 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
427 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
429 /* TODO: get the rssi_add & rssi_mul data from the eeprom */
430 return ((rssi * 0x83) / 64 - 400) / 4;
433 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
435 struct p54_common *priv = dev->priv;
436 struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
437 struct ieee80211_rx_status rx_status = {0};
438 u16 freq = le16_to_cpu(hdr->freq);
439 size_t header_len = sizeof(*hdr);
442 if (!(hdr->magic & cpu_to_le16(0x0001))) {
443 if (priv->filter_flags & FIF_FCSFAIL)
444 rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
449 rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
450 rx_status.noise = priv->noise;
452 rx_status.qual = (100 * hdr->rssi) / 127;
453 rx_status.rate_idx = hdr->rate & 0xf;
454 rx_status.freq = freq;
455 rx_status.band = IEEE80211_BAND_2GHZ;
456 rx_status.antenna = hdr->antenna;
458 tsf32 = le32_to_cpu(hdr->tsf32);
459 if (tsf32 < priv->tsf_low32)
461 rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
462 priv->tsf_low32 = tsf32;
464 rx_status.flag |= RX_FLAG_TSFT;
466 if (hdr->magic & cpu_to_le16(0x4000))
467 header_len += hdr->align[0];
469 skb_pull(skb, header_len);
470 skb_trim(skb, le16_to_cpu(hdr->len));
472 ieee80211_rx_irqsafe(dev, skb, &rx_status);
477 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
479 struct p54_common *priv = dev->priv;
482 for (i = 0; i < dev->queues; i++)
483 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
484 ieee80211_wake_queue(dev, i);
487 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
489 struct p54_common *priv = dev->priv;
490 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
491 struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
492 struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
493 u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
494 struct memrecord *range = NULL;
496 u32 last_addr = priv->rx_start;
499 spin_lock_irqsave(&priv->tx_queue.lock, flags);
500 while (entry != (struct sk_buff *)&priv->tx_queue) {
501 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
502 range = (void *)info->driver_data;
503 if (range->start_addr == addr) {
504 struct p54_control_hdr *entry_hdr;
505 struct p54_tx_control_allocdata *entry_data;
508 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
509 struct ieee80211_tx_info *ni;
510 struct memrecord *mr;
512 ni = IEEE80211_SKB_CB(entry->next);
513 mr = (struct memrecord *)ni->driver_data;
514 freed = mr->start_addr - last_addr;
516 freed = priv->rx_end - last_addr;
518 last_addr = range->end_addr;
519 __skb_unlink(entry, &priv->tx_queue);
520 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
522 memset(&info->status, 0, sizeof(info->status));
523 entry_hdr = (struct p54_control_hdr *) entry->data;
524 entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
525 if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
526 pad = entry_data->align[0];
528 priv->tx_stats[entry_data->hw_queue].len--;
529 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
530 if (!(payload->status & 0x01))
531 info->flags |= IEEE80211_TX_STAT_ACK;
533 info->status.excessive_retries = 1;
535 info->status.retry_count = payload->retries - 1;
536 info->status.ack_signal = p54_rssi_to_dbm(dev,
537 le16_to_cpu(payload->ack_rssi));
538 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
539 ieee80211_tx_status_irqsafe(dev, entry);
542 last_addr = range->end_addr;
545 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
548 if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
549 sizeof(struct p54_control_hdr))
550 p54_wake_free_queues(dev);
553 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
556 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
557 struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
558 struct p54_common *priv = dev->priv;
563 memcpy(priv->eeprom, eeprom->data, eeprom->len);
565 complete(&priv->eeprom_comp);
568 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
570 struct p54_common *priv = dev->priv;
571 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
572 struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
573 u32 tsf32 = le32_to_cpu(stats->tsf32);
575 if (tsf32 < priv->tsf_low32)
577 priv->tsf_low32 = tsf32;
579 priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
580 priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
581 priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
583 priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
584 complete(&priv->stats_comp);
586 mod_timer(&priv->stats_timer, jiffies + 5 * HZ);
589 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
591 struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
593 switch (le16_to_cpu(hdr->type)) {
594 case P54_CONTROL_TYPE_TXDONE:
595 p54_rx_frame_sent(dev, skb);
597 case P54_CONTROL_TYPE_BBP:
599 case P54_CONTROL_TYPE_STAT_READBACK:
600 p54_rx_stats(dev, skb);
602 case P54_CONTROL_TYPE_EEPROM_READBACK:
603 p54_rx_eeprom_readback(dev, skb);
606 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
607 wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
614 /* returns zero if skb can be reused */
615 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
617 u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
620 return p54_rx_control(dev, skb);
622 return p54_rx_data(dev, skb);
624 EXPORT_SYMBOL_GPL(p54_rx);
627 * So, the firmware is somewhat stupid and doesn't know what places in its
628 * memory incoming data should go to. By poking around in the firmware, we
629 * can find some unused memory to upload our packets to. However, data that we
630 * want the card to TX needs to stay intact until the card has told us that
631 * it is done with it. This function finds empty places we can upload to and
632 * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
635 static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
636 struct p54_control_hdr *data, u32 len)
638 struct p54_common *priv = dev->priv;
639 struct sk_buff *entry = priv->tx_queue.next;
640 struct sk_buff *target_skb = NULL;
641 u32 last_addr = priv->rx_start;
642 u32 largest_hole = 0;
643 u32 target_addr = priv->rx_start;
646 len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
648 spin_lock_irqsave(&priv->tx_queue.lock, flags);
649 left = skb_queue_len(&priv->tx_queue);
652 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
653 struct memrecord *range = (void *)info->driver_data;
654 hole_size = range->start_addr - last_addr;
655 if (!target_skb && hole_size >= len) {
656 target_skb = entry->prev;
658 target_addr = last_addr;
660 largest_hole = max(largest_hole, hole_size);
661 last_addr = range->end_addr;
664 if (!target_skb && priv->rx_end - last_addr >= len) {
665 target_skb = priv->tx_queue.prev;
666 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
667 if (!skb_queue_empty(&priv->tx_queue)) {
668 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
669 struct memrecord *range = (void *)info->driver_data;
670 target_addr = range->end_addr;
673 largest_hole = max(largest_hole, priv->rx_end - last_addr);
676 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
677 struct memrecord *range = (void *)info->driver_data;
678 range->start_addr = target_addr;
679 range->end_addr = target_addr + len;
680 __skb_queue_after(&priv->tx_queue, target_skb, skb);
681 if (largest_hole < priv->rx_mtu + priv->headroom +
683 sizeof(struct p54_control_hdr))
684 ieee80211_stop_queues(dev);
686 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
688 data->req_id = cpu_to_le32(target_addr + priv->headroom);
691 int p54_read_eeprom(struct ieee80211_hw *dev)
693 struct p54_common *priv = dev->priv;
694 struct p54_control_hdr *hdr = NULL;
695 struct p54_eeprom_lm86 *eeprom_hdr;
696 size_t eeprom_size = 0x2020, offset = 0, blocksize;
700 hdr = (struct p54_control_hdr *)kzalloc(sizeof(*hdr) +
701 sizeof(*eeprom_hdr) + EEPROM_READBACK_LEN, GFP_KERNEL);
705 priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
709 eeprom = kzalloc(eeprom_size, GFP_KERNEL);
713 hdr->magic1 = cpu_to_le16(0x8000);
714 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
715 hdr->retry1 = hdr->retry2 = 0;
716 eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
718 while (eeprom_size) {
719 blocksize = min(eeprom_size, (size_t)EEPROM_READBACK_LEN);
720 hdr->len = cpu_to_le16(blocksize + sizeof(*eeprom_hdr));
721 eeprom_hdr->offset = cpu_to_le16(offset);
722 eeprom_hdr->len = cpu_to_le16(blocksize);
723 p54_assign_address(dev, NULL, hdr, hdr->len + sizeof(*hdr));
724 priv->tx(dev, hdr, hdr->len + sizeof(*hdr), 0);
726 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
727 printk(KERN_ERR "%s: device does not respond!\n",
728 wiphy_name(dev->wiphy));
733 memcpy(eeprom + offset, priv->eeprom, blocksize);
735 eeprom_size -= blocksize;
738 ret = p54_parse_eeprom(dev, eeprom, offset);
747 EXPORT_SYMBOL_GPL(p54_read_eeprom);
749 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
751 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
752 struct ieee80211_tx_queue_stats *current_queue;
753 struct p54_common *priv = dev->priv;
754 struct p54_control_hdr *hdr;
755 struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
756 struct p54_tx_control_allocdata *txhdr;
761 current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
762 if (unlikely(current_queue->len > current_queue->limit))
763 return NETDEV_TX_BUSY;
764 current_queue->len++;
765 current_queue->count++;
766 if (current_queue->len == current_queue->limit)
767 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
769 padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
772 txhdr = (struct p54_tx_control_allocdata *)
773 skb_push(skb, sizeof(*txhdr) + padding);
774 hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
777 hdr->magic1 = cpu_to_le16(0x4010);
779 hdr->magic1 = cpu_to_le16(0x0010);
780 hdr->len = cpu_to_le16(len);
781 hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
782 hdr->retry1 = hdr->retry2 = info->control.retry_limit;
784 /* TODO: add support for alternate retry TX rates */
785 rate = ieee80211_get_tx_rate(dev, info)->hw_value;
786 if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
790 if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
792 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
793 } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
795 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
797 memset(txhdr->rateset, rate, 8);
800 txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
801 txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
802 2 : info->antenna_sel_tx - 1;
803 txhdr->output_power = priv->output_power;
804 txhdr->cts_rate = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
807 txhdr->align[0] = padding;
809 /* FIXME: The sequence that follows is needed for this driver to
810 * work with mac80211 since "mac80211: fix TX sequence numbers".
811 * As with the temporary code in rt2x00, changes will be needed
812 * to get proper sequence numbers on beacons. In addition, this
813 * patch places the sequence number in the hardware state, which
814 * limits us to a single virtual state.
816 if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
817 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
819 ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
820 ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
822 /* modifies skb->cb and with it info, so must be last! */
823 p54_assign_address(dev, skb, hdr, skb->len);
825 priv->tx(dev, hdr, skb->len, 0);
829 static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
832 struct p54_common *priv = dev->priv;
833 struct p54_control_hdr *hdr;
834 struct p54_tx_control_filter *filter;
837 hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
838 priv->tx_hdr_len, GFP_ATOMIC);
842 hdr = (void *)hdr + priv->tx_hdr_len;
844 filter = (struct p54_tx_control_filter *) hdr->data;
845 hdr->magic1 = cpu_to_le16(0x8001);
846 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
848 priv->filter_type = filter->filter_type = cpu_to_le16(filter_type);
849 memcpy(filter->mac_addr, priv->mac_addr, ETH_ALEN);
851 memset(filter->bssid, ~0, ETH_ALEN);
853 memcpy(filter->bssid, bssid, ETH_ALEN);
855 filter->rx_antenna = priv->rx_antenna;
857 if (priv->fw_var < 0x500) {
858 data_len = P54_TX_CONTROL_FILTER_V1_LEN;
859 filter->v1.basic_rate_mask = cpu_to_le32(0x15F);
860 filter->v1.rx_addr = cpu_to_le32(priv->rx_end);
861 filter->v1.max_rx = cpu_to_le16(priv->rx_mtu);
862 filter->v1.rxhw = cpu_to_le16(priv->rxhw);
863 filter->v1.wakeup_timer = cpu_to_le16(500);
865 data_len = P54_TX_CONTROL_FILTER_V2_LEN;
866 filter->v2.rx_addr = cpu_to_le32(priv->rx_end);
867 filter->v2.max_rx = cpu_to_le16(priv->rx_mtu);
868 filter->v2.rxhw = cpu_to_le16(priv->rxhw);
869 filter->v2.timer = cpu_to_le16(1000);
872 hdr->len = cpu_to_le16(data_len);
873 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
874 priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
878 static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
880 struct p54_common *priv = dev->priv;
881 struct p54_control_hdr *hdr;
882 struct p54_tx_control_channel *chan;
887 hdr = kzalloc(sizeof(*hdr) + sizeof(*chan) +
888 priv->tx_hdr_len, GFP_KERNEL);
892 hdr = (void *)hdr + priv->tx_hdr_len;
894 chan = (struct p54_tx_control_channel *) hdr->data;
896 hdr->magic1 = cpu_to_le16(0x8001);
898 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
900 chan->flags = cpu_to_le16(0x1);
901 chan->dwell = cpu_to_le16(0x0);
903 for (i = 0; i < priv->iq_autocal_len; i++) {
904 if (priv->iq_autocal[i].freq != freq)
907 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
908 sizeof(*priv->iq_autocal));
911 if (i == priv->iq_autocal_len)
914 for (i = 0; i < priv->output_limit_len; i++) {
915 if (priv->output_limit[i].freq != freq)
918 chan->val_barker = 0x38;
919 chan->val_bpsk = chan->dup_bpsk =
920 priv->output_limit[i].val_bpsk;
921 chan->val_qpsk = chan->dup_qpsk =
922 priv->output_limit[i].val_qpsk;
923 chan->val_16qam = chan->dup_16qam =
924 priv->output_limit[i].val_16qam;
925 chan->val_64qam = chan->dup_64qam =
926 priv->output_limit[i].val_64qam;
929 if (i == priv->output_limit_len)
932 entry = priv->curve_data->data;
933 for (i = 0; i < priv->curve_data->channels; i++) {
934 if (*((__le16 *)entry) != freq) {
935 entry += sizeof(__le16);
936 entry += sizeof(struct p54_pa_curve_data_sample) *
937 priv->curve_data->points_per_channel;
941 entry += sizeof(__le16);
942 chan->pa_points_per_curve =
943 min(priv->curve_data->points_per_channel, (u8) 8);
945 memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
946 chan->pa_points_per_curve);
950 if (priv->fw_var < 0x500) {
951 data_len = P54_TX_CONTROL_CHANNEL_V1_LEN;
952 chan->v1.rssical_mul = cpu_to_le16(130);
953 chan->v1.rssical_add = cpu_to_le16(0xfe70);
955 data_len = P54_TX_CONTROL_CHANNEL_V2_LEN;
956 chan->v2.rssical_mul = cpu_to_le16(130);
957 chan->v2.rssical_add = cpu_to_le16(0xfe70);
958 chan->v2.basic_rate_mask = cpu_to_le32(0x15f);
961 hdr->len = cpu_to_le16(data_len);
962 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + data_len);
963 priv->tx(dev, hdr, sizeof(*hdr) + data_len, 1);
967 printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
972 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
974 struct p54_common *priv = dev->priv;
975 struct p54_control_hdr *hdr;
976 struct p54_tx_control_led *led;
978 hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
979 priv->tx_hdr_len, GFP_KERNEL);
983 hdr = (void *)hdr + priv->tx_hdr_len;
984 hdr->magic1 = cpu_to_le16(0x8001);
985 hdr->len = cpu_to_le16(sizeof(*led));
986 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
987 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led));
989 led = (struct p54_tx_control_led *) hdr->data;
990 led->mode = cpu_to_le16(mode);
991 led->led_permanent = cpu_to_le16(link);
992 led->led_temporary = cpu_to_le16(act);
993 led->duration = cpu_to_le16(1000);
995 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
1000 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop) \
1002 queue.aifs = cpu_to_le16(ai_fs); \
1003 queue.cwmin = cpu_to_le16(cw_min); \
1004 queue.cwmax = cpu_to_le16(cw_max); \
1005 queue.txop = cpu_to_le16(_txop); \
1008 static void p54_init_vdcf(struct ieee80211_hw *dev)
1010 struct p54_common *priv = dev->priv;
1011 struct p54_control_hdr *hdr;
1012 struct p54_tx_control_vdcf *vdcf;
1014 /* all USB V1 adapters need a extra headroom */
1015 hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1016 hdr->magic1 = cpu_to_le16(0x8001);
1017 hdr->len = cpu_to_le16(sizeof(*vdcf));
1018 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
1019 hdr->req_id = cpu_to_le32(priv->rx_start);
1021 vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1023 P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
1024 P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
1025 P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
1026 P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
1029 static void p54_set_vdcf(struct ieee80211_hw *dev)
1031 struct p54_common *priv = dev->priv;
1032 struct p54_control_hdr *hdr;
1033 struct p54_tx_control_vdcf *vdcf;
1035 hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
1037 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
1039 vdcf = (struct p54_tx_control_vdcf *) hdr->data;
1041 if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
1043 vdcf->magic1 = 0x10;
1044 vdcf->magic2 = 0x00;
1046 vdcf->slottime = 20;
1047 vdcf->magic1 = 0x0a;
1048 vdcf->magic2 = 0x06;
1051 /* (see prism54/isl_oid.h for further details) */
1052 vdcf->frameburst = cpu_to_le16(0);
1054 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
1057 static int p54_start(struct ieee80211_hw *dev)
1059 struct p54_common *priv = dev->priv;
1062 if (!priv->cached_vdcf) {
1063 priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
1064 priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1067 if (!priv->cached_vdcf)
1071 if (!priv->cached_stats) {
1072 priv->cached_stats = kzalloc(sizeof(struct p54_statistics) +
1073 priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1076 if (!priv->cached_stats) {
1077 kfree(priv->cached_vdcf);
1078 priv->cached_vdcf = NULL;
1083 err = priv->open(dev);
1085 priv->mode = IEEE80211_IF_TYPE_MNTR;
1089 mod_timer(&priv->stats_timer, jiffies + HZ);
1093 static void p54_stop(struct ieee80211_hw *dev)
1095 struct p54_common *priv = dev->priv;
1096 struct sk_buff *skb;
1098 del_timer(&priv->stats_timer);
1099 while ((skb = skb_dequeue(&priv->tx_queue)))
1102 priv->tsf_high32 = priv->tsf_low32 = 0;
1103 priv->mode = IEEE80211_IF_TYPE_INVALID;
1106 static int p54_add_interface(struct ieee80211_hw *dev,
1107 struct ieee80211_if_init_conf *conf)
1109 struct p54_common *priv = dev->priv;
1111 if (priv->mode != IEEE80211_IF_TYPE_MNTR)
1114 switch (conf->type) {
1115 case IEEE80211_IF_TYPE_STA:
1116 priv->mode = conf->type;
1122 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1124 p54_set_filter(dev, 0, NULL);
1126 switch (conf->type) {
1127 case IEEE80211_IF_TYPE_STA:
1128 p54_set_filter(dev, 1, NULL);
1131 BUG(); /* impossible */
1135 p54_set_leds(dev, 1, 0, 0);
1140 static void p54_remove_interface(struct ieee80211_hw *dev,
1141 struct ieee80211_if_init_conf *conf)
1143 struct p54_common *priv = dev->priv;
1144 priv->mode = IEEE80211_IF_TYPE_MNTR;
1145 memset(priv->mac_addr, 0, ETH_ALEN);
1146 p54_set_filter(dev, 0, NULL);
1149 static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1152 struct p54_common *priv = dev->priv;
1154 mutex_lock(&priv->conf_mutex);
1155 priv->rx_antenna = (conf->antenna_sel_rx == 0) ?
1156 2 : conf->antenna_sel_tx - 1;
1157 priv->output_power = conf->power_level << 2;
1158 ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
1160 mutex_unlock(&priv->conf_mutex);
1164 static int p54_config_interface(struct ieee80211_hw *dev,
1165 struct ieee80211_vif *vif,
1166 struct ieee80211_if_conf *conf)
1168 struct p54_common *priv = dev->priv;
1170 mutex_lock(&priv->conf_mutex);
1171 p54_set_filter(dev, 0, conf->bssid);
1172 p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
1173 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1174 mutex_unlock(&priv->conf_mutex);
1178 static void p54_configure_filter(struct ieee80211_hw *dev,
1179 unsigned int changed_flags,
1180 unsigned int *total_flags,
1181 int mc_count, struct dev_mc_list *mclist)
1183 struct p54_common *priv = dev->priv;
1185 *total_flags &= FIF_BCN_PRBRESP_PROMISC |
1186 FIF_PROMISC_IN_BSS |
1189 priv->filter_flags = *total_flags;
1191 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1192 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1193 p54_set_filter(dev, priv->filter_type, NULL);
1195 p54_set_filter(dev, priv->filter_type, priv->bssid);
1198 if (changed_flags & FIF_PROMISC_IN_BSS) {
1199 if (*total_flags & FIF_PROMISC_IN_BSS)
1200 p54_set_filter(dev, priv->filter_type |
1201 cpu_to_le16(0x8), NULL);
1203 p54_set_filter(dev, priv->filter_type &
1204 ~cpu_to_le16(0x8), priv->bssid);
1208 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1209 const struct ieee80211_tx_queue_params *params)
1211 struct p54_common *priv = dev->priv;
1212 struct p54_tx_control_vdcf *vdcf;
1214 vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
1215 ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
1217 if ((params) && !(queue > 4)) {
1218 P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
1219 params->cw_min, params->cw_max, params->txop);
1228 static void p54_statistics_timer(unsigned long data)
1230 struct ieee80211_hw *dev = (struct ieee80211_hw *) data;
1231 struct p54_common *priv = dev->priv;
1232 struct p54_control_hdr *hdr;
1233 struct p54_statistics *stats;
1235 BUG_ON(!priv->cached_stats);
1237 hdr = (void *)priv->cached_stats + priv->tx_hdr_len;
1238 hdr->magic1 = cpu_to_le16(0x8000);
1239 hdr->len = cpu_to_le16(sizeof(*stats));
1240 hdr->type = cpu_to_le16(P54_CONTROL_TYPE_STAT_READBACK);
1241 p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*stats));
1243 priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*stats), 0);
1246 static int p54_get_stats(struct ieee80211_hw *dev,
1247 struct ieee80211_low_level_stats *stats)
1249 struct p54_common *priv = dev->priv;
1251 del_timer(&priv->stats_timer);
1252 p54_statistics_timer((unsigned long)dev);
1254 if (!wait_for_completion_interruptible_timeout(&priv->stats_comp, HZ)) {
1255 printk(KERN_ERR "%s: device does not respond!\n",
1256 wiphy_name(dev->wiphy));
1260 memcpy(stats, &priv->stats, sizeof(*stats));
1265 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1266 struct ieee80211_tx_queue_stats *stats)
1268 struct p54_common *priv = dev->priv;
1270 memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1275 static const struct ieee80211_ops p54_ops = {
1279 .add_interface = p54_add_interface,
1280 .remove_interface = p54_remove_interface,
1281 .config = p54_config,
1282 .config_interface = p54_config_interface,
1283 .configure_filter = p54_configure_filter,
1284 .conf_tx = p54_conf_tx,
1285 .get_stats = p54_get_stats,
1286 .get_tx_stats = p54_get_tx_stats
1289 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
1291 struct ieee80211_hw *dev;
1292 struct p54_common *priv;
1294 dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
1299 priv->mode = IEEE80211_IF_TYPE_INVALID;
1300 skb_queue_head_init(&priv->tx_queue);
1301 dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
1302 IEEE80211_HW_RX_INCLUDES_FCS |
1303 IEEE80211_HW_SIGNAL_DBM |
1304 IEEE80211_HW_NOISE_DBM;
1306 dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1308 dev->channel_change_time = 1000; /* TODO: find actual value */
1310 priv->tx_stats[0].limit = 1;
1311 priv->tx_stats[1].limit = 1;
1312 priv->tx_stats[2].limit = 1;
1313 priv->tx_stats[3].limit = 1;
1314 priv->tx_stats[4].limit = 5;
1317 dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
1318 sizeof(struct p54_tx_control_allocdata);
1320 mutex_init(&priv->conf_mutex);
1321 init_completion(&priv->eeprom_comp);
1322 init_completion(&priv->stats_comp);
1323 setup_timer(&priv->stats_timer, p54_statistics_timer,
1324 (unsigned long)dev);
1328 EXPORT_SYMBOL_GPL(p54_init_common);
1330 void p54_free_common(struct ieee80211_hw *dev)
1332 struct p54_common *priv = dev->priv;
1333 kfree(priv->cached_stats);
1334 kfree(priv->iq_autocal);
1335 kfree(priv->output_limit);
1336 kfree(priv->curve_data);
1337 kfree(priv->cached_vdcf);
1339 EXPORT_SYMBOL_GPL(p54_free_common);
1341 static int __init p54_init(void)
1346 static void __exit p54_exit(void)
1350 module_init(p54_init);
1351 module_exit(p54_exit);