clocks: tegra12: Use static CPU-EMC co-relation
[linux-3.10.git] / drivers / net / wireless / p54 / fwio.c
1 /*
2  * Firmware I/O code for mac80211 Prism54 drivers
3  *
4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
5  * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
7  *
8  * Based on:
9  * - the islsm (softmac prism54) driver, which is:
10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
11  * - stlc45xx driver
12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
13  *
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.
17  */
18
19 #include <linux/init.h>
20 #include <linux/slab.h>
21 #include <linux/firmware.h>
22 #include <linux/etherdevice.h>
23 #include <linux/export.h>
24
25 #include <net/mac80211.h>
26
27 #include "p54.h"
28 #include "eeprom.h"
29 #include "lmac.h"
30
31 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
32 {
33         struct p54_common *priv = dev->priv;
34         struct exp_if *exp_if;
35         struct bootrec *bootrec;
36         u32 *data = (u32 *)fw->data;
37         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
38         u8 *fw_version = NULL;
39         size_t len;
40         int i;
41         int maxlen;
42
43         if (priv->rx_start)
44                 return 0;
45
46         while (data < end_data && *data)
47                 data++;
48
49         while (data < end_data && !*data)
50                 data++;
51
52         bootrec = (struct bootrec *) data;
53
54         while (bootrec->data <= end_data && (bootrec->data +
55                (len = le32_to_cpu(bootrec->len))) <= end_data) {
56                 u32 code = le32_to_cpu(bootrec->code);
57                 switch (code) {
58                 case BR_CODE_COMPONENT_ID:
59                         priv->fw_interface = be32_to_cpup((__be32 *)
60                                              bootrec->data);
61                         switch (priv->fw_interface) {
62                         case FW_LM86:
63                         case FW_LM20:
64                         case FW_LM87: {
65                                 char *iftype = (char *)bootrec->data;
66                                 wiphy_info(priv->hw->wiphy,
67                                            "p54 detected a LM%c%c firmware\n",
68                                            iftype[2], iftype[3]);
69                                 break;
70                                 }
71                         case FW_FMAC:
72                         default:
73                                 wiphy_err(priv->hw->wiphy,
74                                           "unsupported firmware\n");
75                                 return -ENODEV;
76                         }
77                         break;
78                 case BR_CODE_COMPONENT_VERSION:
79                         /* 24 bytes should be enough for all firmwares */
80                         if (strnlen((unsigned char *) bootrec->data, 24) < 24)
81                                 fw_version = (unsigned char *) bootrec->data;
82                         break;
83                 case BR_CODE_DESCR: {
84                         struct bootrec_desc *desc =
85                                 (struct bootrec_desc *)bootrec->data;
86                         priv->rx_start = le32_to_cpu(desc->rx_start);
87                         /* FIXME add sanity checking */
88                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
89                         priv->headroom = desc->headroom;
90                         priv->tailroom = desc->tailroom;
91                         priv->privacy_caps = desc->privacy_caps;
92                         priv->rx_keycache_size = desc->rx_keycache_size;
93                         if (le32_to_cpu(bootrec->len) == 11)
94                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
95                         else
96                                 priv->rx_mtu = (size_t)
97                                         0x620 - priv->tx_hdr_len;
98                         maxlen = priv->tx_hdr_len + /* USB devices */
99                                  sizeof(struct p54_rx_data) +
100                                  4 + /* rx alignment */
101                                  IEEE80211_MAX_FRAG_THRESHOLD;
102                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
103                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
104                                        "to %d\n", priv->rx_mtu, maxlen);
105                                 priv->rx_mtu = maxlen;
106                         }
107                         break;
108                         }
109                 case BR_CODE_EXPOSED_IF:
110                         exp_if = (struct exp_if *) bootrec->data;
111                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
112                                 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
113                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
114                         break;
115                 case BR_CODE_DEPENDENT_IF:
116                         break;
117                 case BR_CODE_END_OF_BRA:
118                 case LEGACY_BR_CODE_END_OF_BRA:
119                         end_data = NULL;
120                         break;
121                 default:
122                         break;
123                 }
124                 bootrec = (struct bootrec *)&bootrec->data[len];
125         }
126
127         if (fw_version) {
128                 wiphy_info(priv->hw->wiphy,
129                            "FW rev %s - Softmac protocol %x.%x\n",
130                            fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
131                 snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
132                                 "%s - %x.%x", fw_version,
133                                 priv->fw_var >> 8, priv->fw_var & 0xff);
134         }
135
136         if (priv->fw_var < 0x500)
137                 wiphy_info(priv->hw->wiphy,
138                            "you are using an obsolete firmware. "
139                            "visit http://wireless.kernel.org/en/users/Drivers/p54 "
140                            "and grab one for \"kernel >= 2.6.28\"!\n");
141
142         if (priv->fw_var >= 0x300) {
143                 /* Firmware supports QoS, use it! */
144
145                 if (priv->fw_var >= 0x500) {
146                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
147                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
148                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
149                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
150                 } else {
151                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
152                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
153                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
154                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
155                 }
156                 priv->hw->queues = P54_QUEUE_AC_NUM;
157         }
158
159         wiphy_info(priv->hw->wiphy,
160                    "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
161                    (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
162                    (priv->privacy_caps &
163                     (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
164                    ? "YES" : "no",
165                    (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
166                    ? "YES" : "no");
167
168         if (priv->rx_keycache_size) {
169                 /*
170                  * NOTE:
171                  *
172                  * The firmware provides at most 255 (0 - 254) slots
173                  * for keys which are then used to offload decryption.
174                  * As a result the 255 entry (aka 0xff) can be used
175                  * safely by the driver to mark keys that didn't fit
176                  * into the full cache. This trick saves us from
177                  * keeping a extra list for uploaded keys.
178                  */
179
180                 priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
181                         priv->rx_keycache_size), GFP_KERNEL);
182
183                 if (!priv->used_rxkeys)
184                         return -ENOMEM;
185         }
186
187         return 0;
188 }
189 EXPORT_SYMBOL_GPL(p54_parse_firmware);
190
191 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
192                                      u16 payload_len, u16 type, gfp_t memflags)
193 {
194         struct p54_hdr *hdr;
195         struct sk_buff *skb;
196         size_t frame_len = sizeof(*hdr) + payload_len;
197
198         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
199                 return NULL;
200
201         if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
202                 return NULL;
203
204         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
205         if (!skb)
206                 return NULL;
207         skb_reserve(skb, priv->tx_hdr_len);
208
209         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
210         hdr->flags = cpu_to_le16(hdr_flags);
211         hdr->len = cpu_to_le16(payload_len);
212         hdr->type = cpu_to_le16(type);
213         hdr->tries = hdr->rts_tries = 0;
214         return skb;
215 }
216
217 int p54_download_eeprom(struct p54_common *priv, void *buf,
218                         u16 offset, u16 len)
219 {
220         struct p54_eeprom_lm86 *eeprom_hdr;
221         struct sk_buff *skb;
222         size_t eeprom_hdr_size;
223         int ret = 0;
224
225         if (priv->fw_var >= 0x509)
226                 eeprom_hdr_size = sizeof(*eeprom_hdr);
227         else
228                 eeprom_hdr_size = 0x4;
229
230         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
231                             len, P54_CONTROL_TYPE_EEPROM_READBACK,
232                             GFP_KERNEL);
233         if (unlikely(!skb))
234                 return -ENOMEM;
235
236         mutex_lock(&priv->eeprom_mutex);
237         priv->eeprom = buf;
238         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
239                 eeprom_hdr_size + len);
240
241         if (priv->fw_var < 0x509) {
242                 eeprom_hdr->v1.offset = cpu_to_le16(offset);
243                 eeprom_hdr->v1.len = cpu_to_le16(len);
244         } else {
245                 eeprom_hdr->v2.offset = cpu_to_le32(offset);
246                 eeprom_hdr->v2.len = cpu_to_le16(len);
247                 eeprom_hdr->v2.magic2 = 0xf;
248                 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
249         }
250
251         p54_tx(priv, skb);
252
253         if (!wait_for_completion_interruptible_timeout(
254              &priv->eeprom_comp, HZ)) {
255                 wiphy_err(priv->hw->wiphy, "device does not respond!\n");
256                 ret = -EBUSY;
257         }
258         priv->eeprom = NULL;
259         mutex_unlock(&priv->eeprom_mutex);
260         return ret;
261 }
262
263 int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
264 {
265         struct sk_buff *skb;
266         struct p54_tim *tim;
267
268         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
269                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
270         if (unlikely(!skb))
271                 return -ENOMEM;
272
273         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
274         tim->count = 1;
275         tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
276         p54_tx(priv, skb);
277         return 0;
278 }
279
280 int p54_sta_unlock(struct p54_common *priv, u8 *addr)
281 {
282         struct sk_buff *skb;
283         struct p54_sta_unlock *sta;
284
285         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
286                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
287         if (unlikely(!skb))
288                 return -ENOMEM;
289
290         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
291         memcpy(sta->addr, addr, ETH_ALEN);
292         p54_tx(priv, skb);
293         return 0;
294 }
295
296 int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
297 {
298         struct sk_buff *skb;
299         struct p54_txcancel *cancel;
300         u32 _req_id = le32_to_cpu(req_id);
301
302         if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
303                 return -EINVAL;
304
305         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
306                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
307         if (unlikely(!skb))
308                 return -ENOMEM;
309
310         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
311         cancel->req_id = req_id;
312         p54_tx(priv, skb);
313         return 0;
314 }
315
316 int p54_setup_mac(struct p54_common *priv)
317 {
318         struct sk_buff *skb;
319         struct p54_setup_mac *setup;
320         u16 mode;
321
322         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
323                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
324         if (!skb)
325                 return -ENOMEM;
326
327         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
328         if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
329                 switch (priv->mode) {
330                 case NL80211_IFTYPE_STATION:
331                         mode = P54_FILTER_TYPE_STATION;
332                         break;
333                 case NL80211_IFTYPE_AP:
334                         mode = P54_FILTER_TYPE_AP;
335                         break;
336                 case NL80211_IFTYPE_ADHOC:
337                 case NL80211_IFTYPE_MESH_POINT:
338                         mode = P54_FILTER_TYPE_IBSS;
339                         break;
340                 case NL80211_IFTYPE_MONITOR:
341                         mode = P54_FILTER_TYPE_PROMISCUOUS;
342                         break;
343                 default:
344                         mode = P54_FILTER_TYPE_HIBERNATE;
345                         break;
346                 }
347
348                 /*
349                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
350                  * STSW45X0C LMAC API - page 12
351                  */
352                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
353                      (priv->filter_flags & FIF_OTHER_BSS)) &&
354                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
355                         mode |= P54_FILTER_TYPE_TRANSPARENT;
356         } else {
357                 mode = P54_FILTER_TYPE_HIBERNATE;
358         }
359
360         setup->mac_mode = cpu_to_le16(mode);
361         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
362         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
363         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
364         setup->rx_align = 0;
365         if (priv->fw_var < 0x500) {
366                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
367                 memset(setup->v1.rts_rates, 0, 8);
368                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
369                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
370                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
371                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
372                 setup->v1.unalloc0 = cpu_to_le16(0);
373         } else {
374                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
375                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
376                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
377                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
378                 setup->v2.truncate = cpu_to_le16(48896);
379                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
380                 setup->v2.sbss_offset = 0;
381                 setup->v2.mcast_window = 0;
382                 setup->v2.rx_rssi_threshold = 0;
383                 setup->v2.rx_ed_threshold = 0;
384                 setup->v2.ref_clock = cpu_to_le32(644245094);
385                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
386                 setup->v2.osc_start_delay = cpu_to_le16(65535);
387         }
388         p54_tx(priv, skb);
389         priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
390         return 0;
391 }
392
393 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
394 {
395         struct sk_buff *skb;
396         struct p54_hdr *hdr;
397         struct p54_scan_head *head;
398         struct p54_iq_autocal_entry *iq_autocal;
399         union p54_scan_body_union *body;
400         struct p54_scan_tail_rate *rate;
401         struct pda_rssi_cal_entry *rssi;
402         struct p54_rssi_db_entry *rssi_data;
403         unsigned int i;
404         void *entry;
405         __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
406
407         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
408                             2 + sizeof(*iq_autocal) + sizeof(*body) +
409                             sizeof(*rate) + 2 * sizeof(*rssi),
410                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
411         if (!skb)
412                 return -ENOMEM;
413
414         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
415         memset(head->scan_params, 0, sizeof(head->scan_params));
416         head->mode = cpu_to_le16(mode);
417         head->dwell = cpu_to_le16(dwell);
418         head->freq = freq;
419
420         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
421                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
422                 *pa_power_points = cpu_to_le16(0x0c);
423         }
424
425         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
426         for (i = 0; i < priv->iq_autocal_len; i++) {
427                 if (priv->iq_autocal[i].freq != freq)
428                         continue;
429
430                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
431                        sizeof(struct p54_iq_autocal_entry));
432                 break;
433         }
434         if (i == priv->iq_autocal_len)
435                 goto err;
436
437         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
438                 body = (void *) skb_put(skb, sizeof(body->longbow));
439         else
440                 body = (void *) skb_put(skb, sizeof(body->normal));
441
442         for (i = 0; i < priv->output_limit->entries; i++) {
443                 __le16 *entry_freq = (void *) (priv->output_limit->data +
444                                      priv->output_limit->entry_size * i);
445
446                 if (*entry_freq != freq)
447                         continue;
448
449                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
450                         memcpy(&body->longbow.power_limits,
451                                (void *) entry_freq + sizeof(__le16),
452                                priv->output_limit->entry_size);
453                 } else {
454                         struct pda_channel_output_limit *limits =
455                                (void *) entry_freq;
456
457                         body->normal.val_barker = 0x38;
458                         body->normal.val_bpsk = body->normal.dup_bpsk =
459                                 limits->val_bpsk;
460                         body->normal.val_qpsk = body->normal.dup_qpsk =
461                                 limits->val_qpsk;
462                         body->normal.val_16qam = body->normal.dup_16qam =
463                                 limits->val_16qam;
464                         body->normal.val_64qam = body->normal.dup_64qam =
465                                 limits->val_64qam;
466                 }
467                 break;
468         }
469         if (i == priv->output_limit->entries)
470                 goto err;
471
472         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
473         for (i = 0; i < priv->curve_data->entries; i++) {
474                 if (*((__le16 *)entry) != freq) {
475                         entry += priv->curve_data->entry_size;
476                         continue;
477                 }
478
479                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
480                         memcpy(&body->longbow.curve_data,
481                                 entry + sizeof(__le16),
482                                 priv->curve_data->entry_size);
483                 } else {
484                         struct p54_scan_body *chan = &body->normal;
485                         struct pda_pa_curve_data *curve_data =
486                                 (void *) priv->curve_data->data;
487
488                         entry += sizeof(__le16);
489                         chan->pa_points_per_curve = 8;
490                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
491                         memcpy(chan->curve_data, entry,
492                                sizeof(struct p54_pa_curve_data_sample) *
493                                min((u8)8, curve_data->points_per_channel));
494                 }
495                 break;
496         }
497         if (i == priv->curve_data->entries)
498                 goto err;
499
500         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
501                 rate = (void *) skb_put(skb, sizeof(*rate));
502                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
503                 for (i = 0; i < sizeof(rate->rts_rates); i++)
504                         rate->rts_rates[i] = i;
505         }
506
507         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
508         rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
509         rssi->mul = cpu_to_le16(rssi_data->mul);
510         rssi->add = cpu_to_le16(rssi_data->add);
511         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
512                 /* Longbow frontend needs ever more */
513                 rssi = (void *) skb_put(skb, sizeof(*rssi));
514                 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
515                 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
516         }
517
518         if (priv->fw_var >= 0x509) {
519                 rate = (void *) skb_put(skb, sizeof(*rate));
520                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
521                 for (i = 0; i < sizeof(rate->rts_rates); i++)
522                         rate->rts_rates[i] = i;
523         }
524
525         hdr = (struct p54_hdr *) skb->data;
526         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
527
528         p54_tx(priv, skb);
529         priv->cur_rssi = rssi_data;
530         return 0;
531
532 err:
533         wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
534                   ieee80211_frequency_to_channel(
535                           priv->hw->conf.chandef.chan->center_freq));
536
537         dev_kfree_skb_any(skb);
538         return -EINVAL;
539 }
540
541 int p54_set_leds(struct p54_common *priv)
542 {
543         struct sk_buff *skb;
544         struct p54_led *led;
545
546         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
547                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
548         if (unlikely(!skb))
549                 return -ENOMEM;
550
551         led = (struct p54_led *) skb_put(skb, sizeof(*led));
552         led->flags = cpu_to_le16(0x0003);
553         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
554         led->delay[0] = cpu_to_le16(1);
555         led->delay[1] = cpu_to_le16(0);
556         p54_tx(priv, skb);
557         return 0;
558 }
559
560 int p54_set_edcf(struct p54_common *priv)
561 {
562         struct sk_buff *skb;
563         struct p54_edcf *edcf;
564         u8 rtd;
565
566         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
567                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
568         if (unlikely(!skb))
569                 return -ENOMEM;
570
571         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
572         if (priv->use_short_slot) {
573                 edcf->slottime = 9;
574                 edcf->sifs = 0x10;
575                 edcf->eofpad = 0x00;
576         } else {
577                 edcf->slottime = 20;
578                 edcf->sifs = 0x0a;
579                 edcf->eofpad = 0x06;
580         }
581         /*
582          * calculate the extra round trip delay according to the
583          * formula from 802.11-2007 17.3.8.6.
584          */
585         rtd = 3 * priv->coverage_class;
586         edcf->slottime += rtd;
587         edcf->round_trip_delay = cpu_to_le16(rtd);
588         /* (see prism54/isl_oid.h for further details) */
589         edcf->frameburst = cpu_to_le16(0);
590         edcf->flags = 0;
591         memset(edcf->mapping, 0, sizeof(edcf->mapping));
592         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
593         p54_tx(priv, skb);
594         return 0;
595 }
596
597 int p54_set_ps(struct p54_common *priv)
598 {
599         struct sk_buff *skb;
600         struct p54_psm *psm;
601         unsigned int i;
602         u16 mode;
603
604         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
605             !priv->powersave_override)
606                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
607                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
608         else
609                 mode = P54_PSM_CAM;
610
611         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
612                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
613         if (!skb)
614                 return -ENOMEM;
615
616         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
617         psm->mode = cpu_to_le16(mode);
618         psm->aid = cpu_to_le16(priv->aid);
619         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
620                 psm->intervals[i].interval =
621                         cpu_to_le16(priv->hw->conf.listen_interval);
622                 psm->intervals[i].periods = cpu_to_le16(1);
623         }
624
625         psm->beacon_rssi_skip_max = 200;
626         psm->rssi_delta_threshold = 0;
627         psm->nr = 1;
628         psm->exclude[0] = WLAN_EID_TIM;
629
630         p54_tx(priv, skb);
631         priv->phy_ps = mode != P54_PSM_CAM;
632         return 0;
633 }
634
635 int p54_init_xbow_synth(struct p54_common *priv)
636 {
637         struct sk_buff *skb;
638         struct p54_xbow_synth *xbow;
639
640         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
641                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
642         if (unlikely(!skb))
643                 return -ENOMEM;
644
645         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
646         xbow->magic1 = cpu_to_le16(0x1);
647         xbow->magic2 = cpu_to_le16(0x2);
648         xbow->freq = cpu_to_le16(5390);
649         memset(xbow->padding, 0, sizeof(xbow->padding));
650         p54_tx(priv, skb);
651         return 0;
652 }
653
654 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
655                    u8 *addr, u8* key)
656 {
657         struct sk_buff *skb;
658         struct p54_keycache *rxkey;
659
660         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
661                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
662         if (unlikely(!skb))
663                 return -ENOMEM;
664
665         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
666         rxkey->entry = slot;
667         rxkey->key_id = idx;
668         rxkey->key_type = algo;
669         if (addr)
670                 memcpy(rxkey->mac, addr, ETH_ALEN);
671         else
672                 memset(rxkey->mac, ~0, ETH_ALEN);
673
674         switch (algo) {
675         case P54_CRYPTO_WEP:
676         case P54_CRYPTO_AESCCMP:
677                 rxkey->key_len = min_t(u8, 16, len);
678                 memcpy(rxkey->key, key, rxkey->key_len);
679                 break;
680
681         case P54_CRYPTO_TKIPMICHAEL:
682                 rxkey->key_len = 24;
683                 memcpy(rxkey->key, key, 16);
684                 memcpy(&(rxkey->key[16]), &(key
685                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
686                 break;
687
688         case P54_CRYPTO_NONE:
689                 rxkey->key_len = 0;
690                 memset(rxkey->key, 0, sizeof(rxkey->key));
691                 break;
692
693         default:
694                 wiphy_err(priv->hw->wiphy,
695                           "invalid cryptographic algorithm: %d\n", algo);
696                 dev_kfree_skb(skb);
697                 return -EINVAL;
698         }
699
700         p54_tx(priv, skb);
701         return 0;
702 }
703
704 int p54_fetch_statistics(struct p54_common *priv)
705 {
706         struct ieee80211_tx_info *txinfo;
707         struct p54_tx_info *p54info;
708         struct sk_buff *skb;
709
710         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
711                             sizeof(struct p54_statistics),
712                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
713         if (!skb)
714                 return -ENOMEM;
715
716         /*
717          * The statistic feedback causes some extra headaches here, if it
718          * is not to crash/corrupt the firmware data structures.
719          *
720          * Unlike all other Control Get OIDs we can not use helpers like
721          * skb_put to reserve the space for the data we're requesting.
722          * Instead the extra frame length -which will hold the results later-
723          * will only be told to the p54_assign_address, so that following
724          * frames won't be placed into the  allegedly empty area.
725          */
726         txinfo = IEEE80211_SKB_CB(skb);
727         p54info = (void *) txinfo->rate_driver_data;
728         p54info->extra_len = sizeof(struct p54_statistics);
729
730         p54_tx(priv, skb);
731         return 0;
732 }
733
734 int p54_set_groupfilter(struct p54_common *priv)
735 {
736         struct p54_group_address_table *grp;
737         struct sk_buff *skb;
738         bool on = false;
739
740         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
741                             P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
742         if (!skb)
743                 return -ENOMEM;
744
745         grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
746
747         on = !(priv->filter_flags & FIF_ALLMULTI) &&
748              (priv->mc_maclist_num > 0 &&
749               priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
750
751         if (on) {
752                 grp->filter_enable = cpu_to_le16(1);
753                 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
754                 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
755         } else {
756                 grp->filter_enable = cpu_to_le16(0);
757                 grp->num_address = cpu_to_le16(0);
758                 memset(grp->mac_list, 0, sizeof(grp->mac_list));
759         }
760
761         p54_tx(priv, skb);
762         return 0;
763 }