drivers/net/wireless/p54/p54common.c

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   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>
   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/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24 #ifdef CONFIG_P54_LEDS
  25 #include <linux/leds.h>
  26 #endif /* CONFIG_P54_LEDS */
  27
  28 #include "p54.h"
  29 #include "p54common.h"
  30
  31 static int modparam_nohwcrypt;
  32 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  33 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  34 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  35 MODULE_DESCRIPTION("Softmac Prism54 common code");
  36 MODULE_LICENSE("GPL");
  37 MODULE_ALIAS("prism54common");
  38
  39 static struct ieee80211_rate p54_bgrates[] = {
  40         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  42         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  43         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  44         { .bitrate = 60, .hw_value = 4, },
  45         { .bitrate = 90, .hw_value = 5, },
  46         { .bitrate = 120, .hw_value = 6, },
  47         { .bitrate = 180, .hw_value = 7, },
  48         { .bitrate = 240, .hw_value = 8, },
  49         { .bitrate = 360, .hw_value = 9, },
  50         { .bitrate = 480, .hw_value = 10, },
  51         { .bitrate = 540, .hw_value = 11, },
  52 };
  53
  54 static struct ieee80211_channel p54_bgchannels[] = {
  55         { .center_freq = 2412, .hw_value = 1, },
  56         { .center_freq = 2417, .hw_value = 2, },
  57         { .center_freq = 2422, .hw_value = 3, },
  58         { .center_freq = 2427, .hw_value = 4, },
  59         { .center_freq = 2432, .hw_value = 5, },
  60         { .center_freq = 2437, .hw_value = 6, },
  61         { .center_freq = 2442, .hw_value = 7, },
  62         { .center_freq = 2447, .hw_value = 8, },
  63         { .center_freq = 2452, .hw_value = 9, },
  64         { .center_freq = 2457, .hw_value = 10, },
  65         { .center_freq = 2462, .hw_value = 11, },
  66         { .center_freq = 2467, .hw_value = 12, },
  67         { .center_freq = 2472, .hw_value = 13, },
  68         { .center_freq = 2484, .hw_value = 14, },
  69 };
  70
  71 static struct ieee80211_supported_band band_2GHz = {
  72         .channels = p54_bgchannels,
  73         .n_channels = ARRAY_SIZE(p54_bgchannels),
  74         .bitrates = p54_bgrates,
  75         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  76 };
  77
  78 static struct ieee80211_rate p54_arates[] = {
  79         { .bitrate = 60, .hw_value = 4, },
  80         { .bitrate = 90, .hw_value = 5, },
  81         { .bitrate = 120, .hw_value = 6, },
  82         { .bitrate = 180, .hw_value = 7, },
  83         { .bitrate = 240, .hw_value = 8, },
  84         { .bitrate = 360, .hw_value = 9, },
  85         { .bitrate = 480, .hw_value = 10, },
  86         { .bitrate = 540, .hw_value = 11, },
  87 };
  88
  89 static struct ieee80211_channel p54_achannels[] = {
  90         { .center_freq = 4920 },
  91         { .center_freq = 4940 },
  92         { .center_freq = 4960 },
  93         { .center_freq = 4980 },
  94         { .center_freq = 5040 },
  95         { .center_freq = 5060 },
  96         { .center_freq = 5080 },
  97         { .center_freq = 5170 },
  98         { .center_freq = 5180 },
  99         { .center_freq = 5190 },
 100         { .center_freq = 5200 },
 101         { .center_freq = 5210 },
 102         { .center_freq = 5220 },
 103         { .center_freq = 5230 },
 104         { .center_freq = 5240 },
 105         { .center_freq = 5260 },
 106         { .center_freq = 5280 },
 107         { .center_freq = 5300 },
 108         { .center_freq = 5320 },
 109         { .center_freq = 5500 },
 110         { .center_freq = 5520 },
 111         { .center_freq = 5540 },
 112         { .center_freq = 5560 },
 113         { .center_freq = 5580 },
 114         { .center_freq = 5600 },
 115         { .center_freq = 5620 },
 116         { .center_freq = 5640 },
 117         { .center_freq = 5660 },
 118         { .center_freq = 5680 },
 119         { .center_freq = 5700 },
 120         { .center_freq = 5745 },
 121         { .center_freq = 5765 },
 122         { .center_freq = 5785 },
 123         { .center_freq = 5805 },
 124         { .center_freq = 5825 },
 125 };
 126
 127 static struct ieee80211_supported_band band_5GHz = {
 128         .channels = p54_achannels,
 129         .n_channels = ARRAY_SIZE(p54_achannels),
 130         .bitrates = p54_arates,
 131         .n_bitrates = ARRAY_SIZE(p54_arates),
 132 };
 133
 134 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 135 {
 136         struct p54_common *priv = dev->priv;
 137         struct bootrec_exp_if *exp_if;
 138         struct bootrec *bootrec;
 139         u32 *data = (u32 *)fw->data;
 140         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 141         u8 *fw_version = NULL;
 142         size_t len;
 143         int i;
 144         int maxlen;
 145
 146         if (priv->rx_start)
 147                 return 0;
 148
 149         while (data < end_data && *data)
 150                 data++;
 151
 152         while (data < end_data && !*data)
 153                 data++;
 154
 155         bootrec = (struct bootrec *) data;
 156
 157         while (bootrec->data <= end_data &&
 158                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 159                 u32 code = le32_to_cpu(bootrec->code);
 160                 switch (code) {
 161                 case BR_CODE_COMPONENT_ID:
 162                         priv->fw_interface = be32_to_cpup((__be32 *)
 163                                              bootrec->data);
 164                         switch (priv->fw_interface) {
 165                         case FW_LM86:
 166                         case FW_LM20:
 167                         case FW_LM87: {
 168                                 char *iftype = (char *)bootrec->data;
 169                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 170                                                  "firmware\n",
 171                                         wiphy_name(dev->wiphy),
 172                                         iftype[2], iftype[3]);
 173                                 break;
 174                                 }
 175                         case FW_FMAC:
 176                         default:
 177                                 printk(KERN_ERR "%s: unsupported firmware\n",
 178                                         wiphy_name(dev->wiphy));
 179                                 return -ENODEV;
 180                         }
 181                         break;
 182                 case BR_CODE_COMPONENT_VERSION:
 183                         /* 24 bytes should be enough for all firmwares */
 184                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 185                                 fw_version = (unsigned char*)bootrec->data;
 186                         break;
 187                 case BR_CODE_DESCR: {
 188                         struct bootrec_desc *desc =
 189                                 (struct bootrec_desc *)bootrec->data;
 190                         priv->rx_start = le32_to_cpu(desc->rx_start);
 191                         /* FIXME add sanity checking */
 192                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 193                         priv->headroom = desc->headroom;
 194                         priv->tailroom = desc->tailroom;
 195                         priv->privacy_caps = desc->privacy_caps;
 196                         priv->rx_keycache_size = desc->rx_keycache_size;
 197                         if (le32_to_cpu(bootrec->len) == 11)
 198                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 199                         else
 200                                 priv->rx_mtu = (size_t)
 201                                         0x620 - priv->tx_hdr_len;
 202                         maxlen = priv->tx_hdr_len + /* USB devices */
 203                                  sizeof(struct p54_rx_data) +
 204                                  4 + /* rx alignment */
 205                                  IEEE80211_MAX_FRAG_THRESHOLD;
 206                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 207                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 208                                                  "to %d\n", priv->rx_mtu,
 209                                                  maxlen);
 210                                 priv->rx_mtu = maxlen;
 211                         }
 212                         break;
 213                         }
 214                 case BR_CODE_EXPOSED_IF:
 215                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 216                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 217                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 218                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 219                         break;
 220                 case BR_CODE_DEPENDENT_IF:
 221                         break;
 222                 case BR_CODE_END_OF_BRA:
 223                 case LEGACY_BR_CODE_END_OF_BRA:
 224                         end_data = NULL;
 225                         break;
 226                 default:
 227                         break;
 228                 }
 229                 bootrec = (struct bootrec *)&bootrec->data[len];
 230         }
 231
 232         if (fw_version)
 233                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 234                         wiphy_name(dev->wiphy), fw_version,
 235                         priv->fw_var >> 8, priv->fw_var & 0xff);
 236
 237         if (priv->fw_var < 0x500)
 238                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 239                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 240                        "and grab one for \"kernel >= 2.6.28\"!\n",
 241                         wiphy_name(dev->wiphy));
 242
 243         if (priv->fw_var >= 0x300) {
 244                 /* Firmware supports QoS, use it! */
 245                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 246                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 247                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 248                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 249                 dev->queues = P54_QUEUE_AC_NUM;
 250         }
 251
 252         if (!modparam_nohwcrypt) {
 253                 printk(KERN_INFO "%s: cryptographic accelerator "
 254                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 255                         wiphy_name(dev->wiphy),
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 257                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 258                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 259                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 260                         "YES" : "no");
 261
 262                 if (priv->rx_keycache_size) {
 263                         /*
 264                          * NOTE:
 265                          *
 266                          * The firmware provides at most 255 (0 - 254) slots
 267                          * for keys which are then used to offload decryption.
 268                          * As a result the 255 entry (aka 0xff) can be used
 269                          * safely by the driver to mark keys that didn't fit
 270                          * into the full cache. This trick saves us from
 271                          * keeping a extra list for uploaded keys.
 272                          */
 273
 274                         priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
 275                                 priv->rx_keycache_size), GFP_KERNEL);
 276
 277                         if (!priv->used_rxkeys)
 278                                 return -ENOMEM;
 279                 }
 280         }
 281
 282         return 0;
 283 }
 284 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 285
 286 static int p54_convert_rev0(struct ieee80211_hw *dev,
 287                             struct pda_pa_curve_data *curve_data)
 288 {
 289         struct p54_common *priv = dev->priv;
 290         struct p54_pa_curve_data_sample *dst;
 291         struct pda_pa_curve_data_sample_rev0 *src;
 292         size_t cd_len = sizeof(*curve_data) +
 293                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 294                  curve_data->channels;
 295         unsigned int i, j;
 296         void *source, *target;
 297
 298         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 299                                    GFP_KERNEL);
 300         if (!priv->curve_data)
 301                 return -ENOMEM;
 302
 303         priv->curve_data->entries = curve_data->channels;
 304         priv->curve_data->entry_size = sizeof(__le16) +
 305                 sizeof(*dst) * curve_data->points_per_channel;
 306         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 307         priv->curve_data->len = cd_len;
 308         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 309         source = curve_data->data;
 310         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 311         for (i = 0; i < curve_data->channels; i++) {
 312                 __le16 *freq = source;
 313                 source += sizeof(__le16);
 314                 *((__le16 *)target) = *freq;
 315                 target += sizeof(__le16);
 316                 for (j = 0; j < curve_data->points_per_channel; j++) {
 317                         dst = target;
 318                         src = source;
 319
 320                         dst->rf_power = src->rf_power;
 321                         dst->pa_detector = src->pa_detector;
 322                         dst->data_64qam = src->pcv;
 323                         /* "invent" the points for the other modulations */
 324 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 325                         dst->data_16qam = SUB(src->pcv, 12);
 326                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 327                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 328                         dst->data_barker = SUB(dst->data_bpsk, 14);
 329 #undef SUB
 330                         target += sizeof(*dst);
 331                         source += sizeof(*src);
 332                 }
 333         }
 334
 335         return 0;
 336 }
 337
 338 static int p54_convert_rev1(struct ieee80211_hw *dev,
 339                             struct pda_pa_curve_data *curve_data)
 340 {
 341         struct p54_common *priv = dev->priv;
 342         struct p54_pa_curve_data_sample *dst;
 343         struct pda_pa_curve_data_sample_rev1 *src;
 344         size_t cd_len = sizeof(*curve_data) +
 345                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 346                  curve_data->channels;
 347         unsigned int i, j;
 348         void *source, *target;
 349
 350         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 351                                    GFP_KERNEL);
 352         if (!priv->curve_data)
 353                 return -ENOMEM;
 354
 355         priv->curve_data->entries = curve_data->channels;
 356         priv->curve_data->entry_size = sizeof(__le16) +
 357                 sizeof(*dst) * curve_data->points_per_channel;
 358         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 359         priv->curve_data->len = cd_len;
 360         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 361         source = curve_data->data;
 362         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 363         for (i = 0; i < curve_data->channels; i++) {
 364                 __le16 *freq = source;
 365                 source += sizeof(__le16);
 366                 *((__le16 *)target) = *freq;
 367                 target += sizeof(__le16);
 368                 for (j = 0; j < curve_data->points_per_channel; j++) {
 369                         memcpy(target, source, sizeof(*src));
 370
 371                         target += sizeof(*dst);
 372                         source += sizeof(*src);
 373                 }
 374                 source++;
 375         }
 376
 377         return 0;
 378 }
 379
 380 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 381                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 382 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 383
 384 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 385                              u16 type)
 386 {
 387         struct p54_common *priv = dev->priv;
 388         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 389         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 390         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 391         int i;
 392
 393         if (len != (entry_size * num_entries)) {
 394                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 395                                  " type:(%x) len:%d.\n",
 396                        wiphy_name(dev->wiphy), type, len);
 397
 398                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 399                                      data, len);
 400
 401                 printk(KERN_ERR "%s: please report this issue.\n",
 402                         wiphy_name(dev->wiphy));
 403                 return;
 404         }
 405
 406         for (i = 0; i < num_entries; i++) {
 407                 struct pda_rssi_cal_entry *cal = data +
 408                                                  (offset + i * entry_size);
 409                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 410                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 411         }
 412 }
 413
 414 static void p54_parse_default_country(struct ieee80211_hw *dev,
 415                                       void *data, int len)
 416 {
 417         struct pda_country *country;
 418
 419         if (len != sizeof(*country)) {
 420                 printk(KERN_ERR "%s: found possible invalid default country "
 421                                 "eeprom entry. (entry size: %d)\n",
 422                        wiphy_name(dev->wiphy), len);
 423
 424                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 425                                      data, len);
 426
 427                 printk(KERN_ERR "%s: please report this issue.\n",
 428                         wiphy_name(dev->wiphy));
 429                 return;
 430         }
 431
 432         country = (struct pda_country *) data;
 433         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 434                 regulatory_hint(dev->wiphy, country->alpha2);
 435         else {
 436                 /* TODO:
 437                  * write a shared/common function that converts
 438                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 439                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 440                  */
 441         }
 442 }
 443
 444 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 445                                      u8 *data, size_t len)
 446 {
 447         struct p54_common *priv = dev->priv;
 448
 449         if (len < 2)
 450                 return -EINVAL;
 451
 452         if (data[0] != 0) {
 453                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 454                        wiphy_name(dev->wiphy), data[0]);
 455                 return -EINVAL;
 456         }
 457
 458         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 459                 return -EINVAL;
 460
 461         priv->output_limit = kmalloc(data[1] *
 462                 sizeof(struct pda_channel_output_limit) +
 463                 sizeof(*priv->output_limit), GFP_KERNEL);
 464
 465         if (!priv->output_limit)
 466                 return -ENOMEM;
 467
 468         priv->output_limit->offset = 0;
 469         priv->output_limit->entries = data[1];
 470         priv->output_limit->entry_size =
 471                 sizeof(struct pda_channel_output_limit);
 472         priv->output_limit->len = priv->output_limit->entry_size *
 473                                   priv->output_limit->entries +
 474                                   priv->output_limit->offset;
 475
 476         memcpy(priv->output_limit->data, &data[2],
 477                data[1] * sizeof(struct pda_channel_output_limit));
 478
 479         return 0;
 480 }
 481
 482 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 483                                                size_t total_len)
 484 {
 485         struct p54_cal_database *dst;
 486         size_t payload_len, entries, entry_size, offset;
 487
 488         payload_len = le16_to_cpu(src->len);
 489         entries = le16_to_cpu(src->entries);
 490         entry_size = le16_to_cpu(src->entry_size);
 491         offset = le16_to_cpu(src->offset);
 492         if (((entries * entry_size + offset) != payload_len) ||
 493              (payload_len + sizeof(*src) != total_len))
 494                 return NULL;
 495
 496         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 497         if (!dst)
 498                 return NULL;
 499
 500         dst->entries = entries;
 501         dst->entry_size = entry_size;
 502         dst->offset = offset;
 503         dst->len = payload_len;
 504
 505         memcpy(dst->data, src->data, payload_len);
 506         return dst;
 507 }
 508
 509 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 510 {
 511         struct p54_common *priv = dev->priv;
 512         struct eeprom_pda_wrap *wrap = NULL;
 513         struct pda_entry *entry;
 514         unsigned int data_len, entry_len;
 515         void *tmp;
 516         int err;
 517         u8 *end = (u8 *)eeprom + len;
 518         u16 synth = 0;
 519
 520         wrap = (struct eeprom_pda_wrap *) eeprom;
 521         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 522
 523         /* verify that at least the entry length/code fits */
 524         while ((u8 *)entry <= end - sizeof(*entry)) {
 525                 entry_len = le16_to_cpu(entry->len);
 526                 data_len = ((entry_len - 1) << 1);
 527
 528                 /* abort if entry exceeds whole structure */
 529                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 530                         break;
 531
 532                 switch (le16_to_cpu(entry->code)) {
 533                 case PDR_MAC_ADDRESS:
 534                         if (data_len != ETH_ALEN)
 535                                 break;
 536                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 537                         break;
 538                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 539                         if (priv->output_limit)
 540                                 break;
 541                         err = p54_convert_output_limits(dev, entry->data,
 542                                                         data_len);
 543                         if (err)
 544                                 goto err;
 545                         break;
 546                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 547                         struct pda_pa_curve_data *curve_data =
 548                                 (struct pda_pa_curve_data *)entry->data;
 549                         if (data_len < sizeof(*curve_data)) {
 550                                 err = -EINVAL;
 551                                 goto err;
 552                         }
 553
 554                         switch (curve_data->cal_method_rev) {
 555                         case 0:
 556                                 err = p54_convert_rev0(dev, curve_data);
 557                                 break;
 558                         case 1:
 559                                 err = p54_convert_rev1(dev, curve_data);
 560                                 break;
 561                         default:
 562                                 printk(KERN_ERR "%s: unknown curve data "
 563                                                 "revision %d\n",
 564                                                 wiphy_name(dev->wiphy),
 565                                                 curve_data->cal_method_rev);
 566                                 err = -ENODEV;
 567                                 break;
 568                         }
 569                         if (err)
 570                                 goto err;
 571                         }
 572                         break;
 573                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 574                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 575                         if (!priv->iq_autocal) {
 576                                 err = -ENOMEM;
 577                                 goto err;
 578                         }
 579
 580                         memcpy(priv->iq_autocal, entry->data, data_len);
 581                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 582                         break;
 583                 case PDR_DEFAULT_COUNTRY:
 584                         p54_parse_default_country(dev, entry->data, data_len);
 585                         break;
 586                 case PDR_INTERFACE_LIST:
 587                         tmp = entry->data;
 588                         while ((u8 *)tmp < entry->data + data_len) {
 589                                 struct bootrec_exp_if *exp_if = tmp;
 590                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 591                                         synth = le16_to_cpu(exp_if->variant);
 592                                 tmp += sizeof(struct bootrec_exp_if);
 593                         }
 594                         break;
 595                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 596                         if (data_len < 2)
 597                                 break;
 598                         priv->version = *(u8 *)(entry->data + 1);
 599                         break;
 600                 case PDR_RSSI_LINEAR_APPROXIMATION:
 601                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 602                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 603                         p54_parse_rssical(dev, entry->data, data_len,
 604                                           le16_to_cpu(entry->code));
 605                         break;
 606                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 607                         __le16 *src = (void *) entry->data;
 608                         s16 *dst = (void *) &priv->rssical_db;
 609                         int i;
 610
 611                         if (data_len != sizeof(priv->rssical_db)) {
 612                                 err = -EINVAL;
 613                                 goto err;
 614                         }
 615                         for (i = 0; i < sizeof(priv->rssical_db) /
 616                                         sizeof(*src); i++)
 617                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 618                         }
 619                         break;
 620                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 621                         struct pda_custom_wrapper *pda = (void *) entry->data;
 622                         if (priv->output_limit || data_len < sizeof(*pda))
 623                                 break;
 624                         priv->output_limit = p54_convert_db(pda, data_len);
 625                         }
 626                         break;
 627                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 628                         struct pda_custom_wrapper *pda = (void *) entry->data;
 629                         if (priv->curve_data || data_len < sizeof(*pda))
 630                                 break;
 631                         priv->curve_data = p54_convert_db(pda, data_len);
 632                         }
 633                         break;
 634                 case PDR_END:
 635                         /* make it overrun */
 636                         entry_len = len;
 637                         break;
 638                 case PDR_MANUFACTURING_PART_NUMBER:
 639                 case PDR_PDA_VERSION:
 640                 case PDR_NIC_SERIAL_NUMBER:
 641                 case PDR_REGULATORY_DOMAIN_LIST:
 642                 case PDR_TEMPERATURE_TYPE:
 643                 case PDR_PRISM_PCI_IDENTIFIER:
 644                 case PDR_COUNTRY_INFORMATION:
 645                 case PDR_OEM_NAME:
 646                 case PDR_PRODUCT_NAME:
 647                 case PDR_UTF8_OEM_NAME:
 648                 case PDR_UTF8_PRODUCT_NAME:
 649                 case PDR_COUNTRY_LIST:
 650                 case PDR_ANTENNA_GAIN:
 651                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 652                 case PDR_REGULATORY_POWER_LIMITS:
 653                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 654                 case PDR_PRISM_TX_IQ_CALIBRATION:
 655                 case PDR_BASEBAND_REGISTERS:
 656                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 657                         break;
 658                 default:
 659                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 660                                 wiphy_name(dev->wiphy),
 661                                 le16_to_cpu(entry->code));
 662                         break;
 663                 }
 664
 665                 entry = (void *)entry + (entry_len + 1)*2;
 666         }
 667
 668         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 669             !priv->curve_data) {
 670                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 671                         wiphy_name(dev->wiphy));
 672                 err = -EINVAL;
 673                 goto err;
 674         }
 675
 676         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 677         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 678                 p54_init_xbow_synth(dev);
 679         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 680                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 681         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 682                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 683         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 684                 priv->rx_diversity_mask = 3;
 685         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 686                 priv->tx_diversity_mask = 3;
 687
 688         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 689                 u8 perm_addr[ETH_ALEN];
 690
 691                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 692                         wiphy_name(dev->wiphy));
 693                 random_ether_addr(perm_addr);
 694                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 695         }
 696
 697         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 698                 wiphy_name(dev->wiphy),
 699                 dev->wiphy->perm_addr,
 700                 priv->version, p54_rf_chips[priv->rxhw]);
 701
 702         return 0;
 703
 704   err:
 705         if (priv->iq_autocal) {
 706                 kfree(priv->iq_autocal);
 707                 priv->iq_autocal = NULL;
 708         }
 709
 710         if (priv->output_limit) {
 711                 kfree(priv->output_limit);
 712                 priv->output_limit = NULL;
 713         }
 714
 715         if (priv->curve_data) {
 716                 kfree(priv->curve_data);
 717                 priv->curve_data = NULL;
 718         }
 719
 720         printk(KERN_ERR "%s: eeprom parse failed!\n",
 721                 wiphy_name(dev->wiphy));
 722         return err;
 723 }
 724 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 725
 726 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 727 {
 728         struct p54_common *priv = dev->priv;
 729         int band = dev->conf.channel->band;
 730
 731         if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW)
 732                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 733                          priv->rssical_db[band].add) / 4;
 734         else
 735                 /*
 736                  * TODO: find the correct formula
 737                  */
 738                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 739                          priv->rssical_db[band].add) / 4;
 740 }
 741
 742 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 743 {
 744         struct p54_common *priv = dev->priv;
 745         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 746         struct ieee80211_rx_status rx_status = {0};
 747         u16 freq = le16_to_cpu(hdr->freq);
 748         size_t header_len = sizeof(*hdr);
 749         u32 tsf32;
 750         u8 rate = hdr->rate & 0xf;
 751
 752         /*
 753          * If the device is in a unspecified state we have to
 754          * ignore all data frames. Else we could end up with a
 755          * nasty crash.
 756          */
 757         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 758                 return 0;
 759
 760         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 761                 return 0;
 762         }
 763
 764         if (hdr->decrypt_status == P54_DECRYPT_OK)
 765                 rx_status.flag |= RX_FLAG_DECRYPTED;
 766         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 767             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 768                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 769
 770         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 771         rx_status.noise = priv->noise;
 772         if (hdr->rate & 0x10)
 773                 rx_status.flag |= RX_FLAG_SHORTPRE;
 774         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 775                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 776         else
 777                 rx_status.rate_idx = rate;
 778
 779         rx_status.freq = freq;
 780         rx_status.band =  dev->conf.channel->band;
 781         rx_status.antenna = hdr->antenna;
 782
 783         tsf32 = le32_to_cpu(hdr->tsf32);
 784         if (tsf32 < priv->tsf_low32)
 785                 priv->tsf_high32++;
 786         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 787         priv->tsf_low32 = tsf32;
 788
 789         rx_status.flag |= RX_FLAG_TSFT;
 790
 791         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 792                 header_len += hdr->align[0];
 793
 794         skb_pull(skb, header_len);
 795         skb_trim(skb, le16_to_cpu(hdr->len));
 796
 797         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 798
 799         queue_delayed_work(dev->workqueue, &priv->work,
 800                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 801
 802         return -1;
 803 }
 804
 805 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 806 {
 807         struct p54_common *priv = dev->priv;
 808         int i;
 809
 810         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 811                 return ;
 812
 813         for (i = 0; i < dev->queues; i++)
 814                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 815                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 816                         ieee80211_wake_queue(dev, i);
 817 }
 818
 819 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 820 {
 821         struct p54_common *priv = dev->priv;
 822         struct ieee80211_tx_info *info;
 823         struct p54_tx_info *range;
 824         unsigned long flags;
 825
 826         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 827                 return;
 828
 829         /*
 830          * don't try to free an already unlinked skb
 831          */
 832         if (unlikely((!skb->next) || (!skb->prev)))
 833                 return;
 834
 835         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 836         info = IEEE80211_SKB_CB(skb);
 837         range = (void *)info->rate_driver_data;
 838         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 839                 struct ieee80211_tx_info *ni;
 840                 struct p54_tx_info *mr;
 841
 842                 ni = IEEE80211_SKB_CB(skb->prev);
 843                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 844         }
 845         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 846                 struct ieee80211_tx_info *ni;
 847                 struct p54_tx_info *mr;
 848
 849                 ni = IEEE80211_SKB_CB(skb->next);
 850                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 851         }
 852         __skb_unlink(skb, &priv->tx_queue);
 853         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 854         dev_kfree_skb_any(skb);
 855         p54_wake_free_queues(dev);
 856 }
 857 EXPORT_SYMBOL_GPL(p54_free_skb);
 858
 859 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 860                                            __le32 req_id)
 861 {
 862         struct p54_common *priv = dev->priv;
 863         struct sk_buff *entry;
 864         unsigned long flags;
 865
 866         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 867         entry = priv->tx_queue.next;
 868         while (entry != (struct sk_buff *)&priv->tx_queue) {
 869                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 870
 871                 if (hdr->req_id == req_id) {
 872                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 873                         return entry;
 874                 }
 875                 entry = entry->next;
 876         }
 877         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 878         return NULL;
 879 }
 880
 881 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 882 {
 883         struct p54_common *priv = dev->priv;
 884         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 885         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 886         struct sk_buff *entry;
 887         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 888         struct p54_tx_info *range = NULL;
 889         unsigned long flags;
 890         int count, idx;
 891
 892         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 893         entry = (struct sk_buff *) priv->tx_queue.next;
 894         while (entry != (struct sk_buff *)&priv->tx_queue) {
 895                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 896                 struct p54_hdr *entry_hdr;
 897                 struct p54_tx_data *entry_data;
 898                 unsigned int pad = 0, frame_len;
 899
 900                 range = (void *)info->rate_driver_data;
 901                 if (range->start_addr != addr) {
 902                         entry = entry->next;
 903                         continue;
 904                 }
 905
 906                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 907                         struct ieee80211_tx_info *ni;
 908                         struct p54_tx_info *mr;
 909
 910                         ni = IEEE80211_SKB_CB(entry->next);
 911                         mr = (struct p54_tx_info *)ni->rate_driver_data;
 912                 }
 913
 914                 __skb_unlink(entry, &priv->tx_queue);
 915
 916                 frame_len = entry->len;
 917                 entry_hdr = (struct p54_hdr *) entry->data;
 918                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 919                 if (priv->tx_stats[entry_data->hw_queue].len)
 920                         priv->tx_stats[entry_data->hw_queue].len--;
 921                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 922                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 923
 924                 /*
 925                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 926                  * generated by the driver. Therefore tx_status is bogus
 927                  * and we don't want to confuse the mac80211 stack.
 928                  */
 929                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 930                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 931                                 priv->cached_beacon = NULL;
 932
 933                         kfree_skb(entry);
 934                         goto out;
 935                 }
 936
 937                 /*
 938                  * Clear manually, ieee80211_tx_info_clear_status would
 939                  * clear the counts too and we need them.
 940                  */
 941                 memset(&info->status.ampdu_ack_len, 0,
 942                        sizeof(struct ieee80211_tx_info) -
 943                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 944                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 945                                       status.ampdu_ack_len) != 23);
 946
 947                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 948                         pad = entry_data->align[0];
 949
 950                 /* walk through the rates array and adjust the counts */
 951                 count = payload->tries;
 952                 for (idx = 0; idx < 4; idx++) {
 953                         if (count >= info->status.rates[idx].count) {
 954                                 count -= info->status.rates[idx].count;
 955                         } else if (count > 0) {
 956                                 info->status.rates[idx].count = count;
 957                                 count = 0;
 958                         } else {
 959                                 info->status.rates[idx].idx = -1;
 960                                 info->status.rates[idx].count = 0;
 961                         }
 962                 }
 963
 964                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 965                      (!payload->status))
 966                         info->flags |= IEEE80211_TX_STAT_ACK;
 967                 if (payload->status & P54_TX_PSM_CANCELLED)
 968                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 969                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 970                                 (int)payload->ack_rssi);
 971
 972                 /* Undo all changes to the frame. */
 973                 switch (entry_data->key_type) {
 974                 case P54_CRYPTO_TKIPMICHAEL: {
 975                         u8 *iv = (u8 *)(entry_data->align + pad +
 976                                         entry_data->crypt_offset);
 977
 978                         /* Restore the original TKIP IV. */
 979                         iv[2] = iv[0];
 980                         iv[0] = iv[1];
 981                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 982
 983                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 984                         break;
 985                         }
 986                 case P54_CRYPTO_AESCCMP:
 987                         frame_len -= 8; /* remove CCMP_MIC */
 988                         break;
 989                 case P54_CRYPTO_WEP:
 990                         frame_len -= 4; /* remove WEP_ICV */
 991                         break;
 992                 }
 993                 skb_trim(entry, frame_len);
 994                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 995                 ieee80211_tx_status_irqsafe(dev, entry);
 996                 goto out;
 997         }
 998         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 999
1000 out:
1001         p54_wake_free_queues(dev);
1002 }
1003
1004 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1005                                    struct sk_buff *skb)
1006 {
1007         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1008         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1009         struct p54_common *priv = dev->priv;
1010
1011         if (!priv->eeprom)
1012                 return ;
1013
1014         if (priv->fw_var >= 0x509) {
1015                 memcpy(priv->eeprom, eeprom->v2.data,
1016                        le16_to_cpu(eeprom->v2.len));
1017         } else {
1018                 memcpy(priv->eeprom, eeprom->v1.data,
1019                        le16_to_cpu(eeprom->v1.len));
1020         }
1021
1022         complete(&priv->eeprom_comp);
1023 }
1024
1025 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1026 {
1027         struct p54_common *priv = dev->priv;
1028         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1029         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1030         u32 tsf32;
1031
1032         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1033                 return ;
1034
1035         tsf32 = le32_to_cpu(stats->tsf32);
1036         if (tsf32 < priv->tsf_low32)
1037                 priv->tsf_high32++;
1038         priv->tsf_low32 = tsf32;
1039
1040         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1041         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1042         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1043
1044         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1045
1046         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1047 }
1048
1049 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1050 {
1051         struct p54_common *priv = dev->priv;
1052         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1053         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1054         u16 event = le16_to_cpu(trap->event);
1055         u16 freq = le16_to_cpu(trap->frequency);
1056
1057         switch (event) {
1058         case P54_TRAP_BEACON_TX:
1059                 break;
1060         case P54_TRAP_RADAR:
1061                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1062                         wiphy_name(dev->wiphy), freq);
1063                 break;
1064         case P54_TRAP_NO_BEACON:
1065                 if (priv->vif)
1066                         ieee80211_beacon_loss(priv->vif);
1067                 break;
1068         case P54_TRAP_SCAN:
1069                 break;
1070         case P54_TRAP_TBTT:
1071                 break;
1072         case P54_TRAP_TIMER:
1073                 break;
1074         default:
1075                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1076                        wiphy_name(dev->wiphy), event, freq);
1077                 break;
1078         }
1079 }
1080
1081 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1082 {
1083         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1084
1085         switch (le16_to_cpu(hdr->type)) {
1086         case P54_CONTROL_TYPE_TXDONE:
1087                 p54_rx_frame_sent(dev, skb);
1088                 break;
1089         case P54_CONTROL_TYPE_TRAP:
1090                 p54_rx_trap(dev, skb);
1091                 break;
1092         case P54_CONTROL_TYPE_BBP:
1093                 break;
1094         case P54_CONTROL_TYPE_STAT_READBACK:
1095                 p54_rx_stats(dev, skb);
1096                 break;
1097         case P54_CONTROL_TYPE_EEPROM_READBACK:
1098                 p54_rx_eeprom_readback(dev, skb);
1099                 break;
1100         default:
1101                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1102                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1103                 break;
1104         }
1105
1106         return 0;
1107 }
1108
1109 /* returns zero if skb can be reused */
1110 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1111 {
1112         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1113
1114         if (type & P54_HDR_FLAG_CONTROL)
1115                 return p54_rx_control(dev, skb);
1116         else
1117                 return p54_rx_data(dev, skb);
1118 }
1119 EXPORT_SYMBOL_GPL(p54_rx);
1120
1121 /*
1122  * So, the firmware is somewhat stupid and doesn't know what places in its
1123  * memory incoming data should go to. By poking around in the firmware, we
1124  * can find some unused memory to upload our packets to. However, data that we
1125  * want the card to TX needs to stay intact until the card has told us that
1126  * it is done with it. This function finds empty places we can upload to and
1127  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1128  * p54_free_skb frees allocated areas.
1129  */
1130 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1131                                struct p54_hdr *data, u32 len)
1132 {
1133         struct p54_common *priv = dev->priv;
1134         struct sk_buff *entry;
1135         struct sk_buff *target_skb = NULL;
1136         struct ieee80211_tx_info *info;
1137         struct p54_tx_info *range;
1138         u32 last_addr = priv->rx_start;
1139         u32 largest_hole = 0;
1140         u32 target_addr = priv->rx_start;
1141         unsigned long flags;
1142         unsigned int left;
1143         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1144
1145         if (!skb)
1146                 return -EINVAL;
1147
1148         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1149
1150         left = skb_queue_len(&priv->tx_queue);
1151         if (unlikely(left >= 28)) {
1152                 /*
1153                  * The tx_queue is nearly full!
1154                  * We have throttle normal data traffic, because we must
1155                  * have a few spare slots for control frames left.
1156                  */
1157                 ieee80211_stop_queues(dev);
1158                 queue_delayed_work(dev->workqueue, &priv->work,
1159                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1160
1161                 if (unlikely(left == 32)) {
1162                         /*
1163                          * The tx_queue is now really full.
1164                          *
1165                          * TODO: check if the device has crashed and reset it.
1166                          */
1167                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1168                         return -ENOSPC;
1169                 }
1170         }
1171
1172         entry = priv->tx_queue.next;
1173         while (left--) {
1174                 u32 hole_size;
1175                 info = IEEE80211_SKB_CB(entry);
1176                 range = (void *)info->rate_driver_data;
1177                 hole_size = range->start_addr - last_addr;
1178                 if (!target_skb && hole_size >= len) {
1179                         target_skb = entry->prev;
1180                         hole_size -= len;
1181                         target_addr = last_addr;
1182                 }
1183                 largest_hole = max(largest_hole, hole_size);
1184                 last_addr = range->end_addr;
1185                 entry = entry->next;
1186         }
1187         if (!target_skb && priv->rx_end - last_addr >= len) {
1188                 target_skb = priv->tx_queue.prev;
1189                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1190                 if (!skb_queue_empty(&priv->tx_queue)) {
1191                         info = IEEE80211_SKB_CB(target_skb);
1192                         range = (void *)info->rate_driver_data;
1193                         target_addr = range->end_addr;
1194                 }
1195         } else
1196                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1197
1198         if (!target_skb) {
1199                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1200                 ieee80211_stop_queues(dev);
1201                 return -ENOSPC;
1202         }
1203
1204         info = IEEE80211_SKB_CB(skb);
1205         range = (void *)info->rate_driver_data;
1206         range->start_addr = target_addr;
1207         range->end_addr = target_addr + len;
1208         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1209         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1210
1211         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1212                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1213                 ieee80211_stop_queues(dev);
1214
1215         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1216         return 0;
1217 }
1218
1219 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1220                                      u16 payload_len, u16 type, gfp_t memflags)
1221 {
1222         struct p54_common *priv = dev->priv;
1223         struct p54_hdr *hdr;
1224         struct sk_buff *skb;
1225         size_t frame_len = sizeof(*hdr) + payload_len;
1226
1227         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1228                 return NULL;
1229
1230         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1231         if (!skb)
1232                 return NULL;
1233         skb_reserve(skb, priv->tx_hdr_len);
1234
1235         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1236         hdr->flags = cpu_to_le16(hdr_flags);
1237         hdr->len = cpu_to_le16(payload_len);
1238         hdr->type = cpu_to_le16(type);
1239         hdr->tries = hdr->rts_tries = 0;
1240
1241         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1242                 kfree_skb(skb);
1243                 return NULL;
1244         }
1245         return skb;
1246 }
1247
1248 int p54_read_eeprom(struct ieee80211_hw *dev)
1249 {
1250         struct p54_common *priv = dev->priv;
1251         struct p54_eeprom_lm86 *eeprom_hdr;
1252         struct sk_buff *skb;
1253         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1254         int ret = -ENOMEM;
1255         void *eeprom = NULL;
1256
1257         maxblocksize = EEPROM_READBACK_LEN;
1258         if (priv->fw_var >= 0x509)
1259                 maxblocksize -= 0xc;
1260         else
1261                 maxblocksize -= 0x4;
1262
1263         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1264                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1265                             GFP_KERNEL);
1266         if (!skb)
1267                 goto free;
1268         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1269         if (!priv->eeprom)
1270                 goto free;
1271         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1272         if (!eeprom)
1273                 goto free;
1274
1275         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1276                      sizeof(*eeprom_hdr) + maxblocksize);
1277
1278         while (eeprom_size) {
1279                 blocksize = min(eeprom_size, maxblocksize);
1280                 if (priv->fw_var < 0x509) {
1281                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1282                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1283                 } else {
1284                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1285                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1286                         eeprom_hdr->v2.magic2 = 0xf;
1287                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1288                 }
1289                 priv->tx(dev, skb);
1290
1291                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1292                         printk(KERN_ERR "%s: device does not respond!\n",
1293                                 wiphy_name(dev->wiphy));
1294                         ret = -EBUSY;
1295                         goto free;
1296                 }
1297
1298                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1299                 offset += blocksize;
1300                 eeprom_size -= blocksize;
1301         }
1302
1303         ret = p54_parse_eeprom(dev, eeprom, offset);
1304 free:
1305         kfree(priv->eeprom);
1306         priv->eeprom = NULL;
1307         p54_free_skb(dev, skb);
1308         kfree(eeprom);
1309
1310         return ret;
1311 }
1312 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1313
1314 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1315                 bool set)
1316 {
1317         struct p54_common *priv = dev->priv;
1318         struct sk_buff *skb;
1319         struct p54_tim *tim;
1320
1321         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1322                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1323         if (!skb)
1324                 return -ENOMEM;
1325
1326         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1327         tim->count = 1;
1328         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1329         priv->tx(dev, skb);
1330         return 0;
1331 }
1332
1333 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1334 {
1335         struct p54_common *priv = dev->priv;
1336         struct sk_buff *skb;
1337         struct p54_sta_unlock *sta;
1338
1339         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1340                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1341         if (!skb)
1342                 return -ENOMEM;
1343
1344         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1345         memcpy(sta->addr, addr, ETH_ALEN);
1346         priv->tx(dev, skb);
1347         return 0;
1348 }
1349
1350 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1351                               enum sta_notify_cmd notify_cmd,
1352                               struct ieee80211_sta *sta)
1353 {
1354         switch (notify_cmd) {
1355         case STA_NOTIFY_ADD:
1356         case STA_NOTIFY_REMOVE:
1357                 /*
1358                  * Notify the firmware that we don't want or we don't
1359                  * need to buffer frames for this station anymore.
1360                  */
1361
1362                 p54_sta_unlock(dev, sta->addr);
1363                 break;
1364         case STA_NOTIFY_AWAKE:
1365                 /* update the firmware's filter table */
1366                 p54_sta_unlock(dev, sta->addr);
1367                 break;
1368         default:
1369                 break;
1370         }
1371 }
1372
1373 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1374 {
1375         struct p54_common *priv = dev->priv;
1376         struct sk_buff *skb;
1377         struct p54_hdr *hdr;
1378         struct p54_txcancel *cancel;
1379
1380         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1381                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1382         if (!skb)
1383                 return -ENOMEM;
1384
1385         hdr = (void *)entry->data;
1386         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1387         cancel->req_id = hdr->req_id;
1388         priv->tx(dev, skb);
1389         return 0;
1390 }
1391
1392 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1393                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1394                 u16 *flags, u16 *aid)
1395 {
1396         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1397         struct p54_common *priv = dev->priv;
1398         int ret = 1;
1399
1400         switch (priv->mode) {
1401         case NL80211_IFTYPE_MONITOR:
1402                 /*
1403                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1404                  * every frame in promiscuous/monitor mode.
1405                  * see STSW45x0C LMAC API - page 12.
1406                  */
1407                 *aid = 0;
1408                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1409                 *queue += P54_QUEUE_DATA;
1410                 break;
1411         case NL80211_IFTYPE_STATION:
1412                 *aid = 1;
1413                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1414                         *queue = P54_QUEUE_MGMT;
1415                         ret = 0;
1416                 } else
1417                         *queue += P54_QUEUE_DATA;
1418                 break;
1419         case NL80211_IFTYPE_AP:
1420         case NL80211_IFTYPE_ADHOC:
1421         case NL80211_IFTYPE_MESH_POINT:
1422                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1423                         *aid = 0;
1424                         *queue = P54_QUEUE_CAB;
1425                         return 0;
1426                 }
1427
1428                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1429                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1430                                 *aid = 0;
1431                                 *queue = P54_QUEUE_MGMT;
1432                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1433                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1434                                 return 0;
1435                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1436                                 *aid = 0;
1437
1438                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1439                                         /*
1440                                          * Injecting beacons on top of a AP is
1441                                          * not a good idea... nevertheless,
1442                                          * it should be doable.
1443                                          */
1444
1445                                         *queue += P54_QUEUE_DATA;
1446                                         return 1;
1447                                 }
1448
1449                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1450                                 *queue = P54_QUEUE_BEACON;
1451                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1452                                 return 0;
1453                         } else {
1454                                 *queue = P54_QUEUE_MGMT;
1455                                 ret = 0;
1456                         }
1457                 } else
1458                         *queue += P54_QUEUE_DATA;
1459
1460                 if (info->control.sta)
1461                         *aid = info->control.sta->aid;
1462
1463                 if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
1464                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1465                 break;
1466         }
1467         return ret;
1468 }
1469
1470 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1471 {
1472         switch (alg) {
1473         case ALG_WEP:
1474                 return P54_CRYPTO_WEP;
1475         case ALG_TKIP:
1476                 return P54_CRYPTO_TKIPMICHAEL;
1477         case ALG_CCMP:
1478                 return P54_CRYPTO_AESCCMP;
1479         default:
1480                 return 0;
1481         }
1482 }
1483
1484 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1485 {
1486         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1487         struct ieee80211_tx_queue_stats *current_queue;
1488         struct p54_common *priv = dev->priv;
1489         struct p54_hdr *hdr;
1490         struct p54_tx_data *txhdr;
1491         size_t padding, len, tim_len = 0;
1492         int i, j, ridx, ret;
1493         u16 hdr_flags = 0, aid = 0;
1494         u8 rate, queue, crypt_offset = 0;
1495         u8 cts_rate = 0x20;
1496         u8 rc_flags;
1497         u8 calculated_tries[4];
1498         u8 nrates = 0, nremaining = 8;
1499
1500         queue = skb_get_queue_mapping(skb);
1501
1502         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1503         current_queue = &priv->tx_stats[queue];
1504         if (unlikely((current_queue->len > current_queue->limit) && ret))
1505                 return NETDEV_TX_BUSY;
1506         current_queue->len++;
1507         current_queue->count++;
1508         if ((current_queue->len == current_queue->limit) && ret)
1509                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1510
1511         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1512         len = skb->len;
1513
1514         if (info->control.hw_key) {
1515                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1516                 if (info->control.hw_key->alg == ALG_TKIP) {
1517                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1518                         /*
1519                          * The firmware excepts that the IV has to have
1520                          * this special format
1521                          */
1522                         iv[1] = iv[0];
1523                         iv[0] = iv[2];
1524                         iv[2] = 0;
1525                 }
1526         }
1527
1528         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1529         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1530
1531         if (padding)
1532                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1533         hdr->type = cpu_to_le16(aid);
1534         hdr->rts_tries = info->control.rates[0].count;
1535
1536         /*
1537          * we register the rates in perfect order, and
1538          * RTS/CTS won't happen on 5 GHz
1539          */
1540         cts_rate = info->control.rts_cts_rate_idx;
1541
1542         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1543
1544         /* see how many rates got used */
1545         for (i = 0; i < 4; i++) {
1546                 if (info->control.rates[i].idx < 0)
1547                         break;
1548                 nrates++;
1549         }
1550
1551         /* limit tries to 8/nrates per rate */
1552         for (i = 0; i < nrates; i++) {
1553                 /*
1554                  * The magic expression here is equivalent to 8/nrates for
1555                  * all values that matter, but avoids division and jumps.
1556                  * Note that nrates can only take the values 1 through 4.
1557                  */
1558                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1559                                                  info->control.rates[i].count);
1560                 nremaining -= calculated_tries[i];
1561         }
1562
1563         /* if there are tries left, distribute from back to front */
1564         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1565                 int tmp = info->control.rates[i].count - calculated_tries[i];
1566
1567                 if (tmp <= 0)
1568                         continue;
1569                 /* RC requested more tries at this rate */
1570
1571                 tmp = min_t(int, tmp, nremaining);
1572                 calculated_tries[i] += tmp;
1573                 nremaining -= tmp;
1574         }
1575
1576         ridx = 0;
1577         for (i = 0; i < nrates && ridx < 8; i++) {
1578                 /* we register the rates in perfect order */
1579                 rate = info->control.rates[i].idx;
1580                 if (info->band == IEEE80211_BAND_5GHZ)
1581                         rate += 4;
1582
1583                 /* store the count we actually calculated for TX status */
1584                 info->control.rates[i].count = calculated_tries[i];
1585
1586                 rc_flags = info->control.rates[i].flags;
1587                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1588                         rate |= 0x10;
1589                         cts_rate |= 0x10;
1590                 }
1591                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1592                         rate |= 0x40;
1593                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1594                         rate |= 0x20;
1595                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1596                         txhdr->rateset[ridx] = rate;
1597                         ridx++;
1598                 }
1599         }
1600
1601         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1602                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1603
1604         /* TODO: enable bursting */
1605         hdr->flags = cpu_to_le16(hdr_flags);
1606         hdr->tries = ridx;
1607         txhdr->rts_rate_idx = 0;
1608         if (info->control.hw_key) {
1609                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1610                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1611                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1612                 if (info->control.hw_key->alg == ALG_TKIP) {
1613                         if (unlikely(skb_tailroom(skb) < 12))
1614                                 goto err;
1615                         /* reserve space for the MIC key */
1616                         len += 8;
1617                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1618                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1619                 }
1620                 /* reserve some space for ICV */
1621                 len += info->control.hw_key->icv_len;
1622                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1623                        info->control.hw_key->icv_len);
1624         } else {
1625                 txhdr->key_type = 0;
1626                 txhdr->key_len = 0;
1627         }
1628         txhdr->crypt_offset = crypt_offset;
1629         txhdr->hw_queue = queue;
1630         txhdr->backlog = current_queue->len;
1631         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1632         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1633                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1634         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1635                 txhdr->longbow.cts_rate = cts_rate;
1636                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1637         } else {
1638                 txhdr->normal.output_power = priv->output_power;
1639                 txhdr->normal.cts_rate = cts_rate;
1640         }
1641         if (padding)
1642                 txhdr->align[0] = padding;
1643
1644         hdr->len = cpu_to_le16(len);
1645         /* modifies skb->cb and with it info, so must be last! */
1646         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1647                 goto err;
1648         priv->tx(dev, skb);
1649
1650         queue_delayed_work(dev->workqueue, &priv->work,
1651                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1652
1653         return NETDEV_TX_OK;
1654
1655  err:
1656         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1657         current_queue->len--;
1658         current_queue->count--;
1659         return NETDEV_TX_BUSY;
1660 }
1661
1662 static int p54_setup_mac(struct ieee80211_hw *dev)
1663 {
1664         struct p54_common *priv = dev->priv;
1665         struct sk_buff *skb;
1666         struct p54_setup_mac *setup;
1667         u16 mode;
1668
1669         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1670                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1671         if (!skb)
1672                 return -ENOMEM;
1673
1674         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1675         if (dev->conf.radio_enabled) {
1676                 switch (priv->mode) {
1677                 case NL80211_IFTYPE_STATION:
1678                         mode = P54_FILTER_TYPE_STATION;
1679                         break;
1680                 case NL80211_IFTYPE_AP:
1681                         mode = P54_FILTER_TYPE_AP;
1682                         break;
1683                 case NL80211_IFTYPE_ADHOC:
1684                 case NL80211_IFTYPE_MESH_POINT:
1685                         mode = P54_FILTER_TYPE_IBSS;
1686                         break;
1687                 case NL80211_IFTYPE_MONITOR:
1688                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1689                         break;
1690                 default:
1691                         mode = P54_FILTER_TYPE_HIBERNATE;
1692                         break;
1693                 }
1694
1695                 /*
1696                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1697                  * STSW45X0C LMAC API - page 12
1698                  */
1699                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1700                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1701                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1702                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1703         } else
1704                 mode = P54_FILTER_TYPE_HIBERNATE;
1705
1706         setup->mac_mode = cpu_to_le16(mode);
1707         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1708         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1709         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1710         setup->rx_align = 0;
1711         if (priv->fw_var < 0x500) {
1712                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1713                 memset(setup->v1.rts_rates, 0, 8);
1714                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1715                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1716                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1717                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1718                 setup->v1.unalloc0 = cpu_to_le16(0);
1719         } else {
1720                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1721                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1722                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1723                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1724                 setup->v2.truncate = cpu_to_le16(48896);
1725                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1726                 setup->v2.sbss_offset = 0;
1727                 setup->v2.mcast_window = 0;
1728                 setup->v2.rx_rssi_threshold = 0;
1729                 setup->v2.rx_ed_threshold = 0;
1730                 setup->v2.ref_clock = cpu_to_le32(644245094);
1731                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1732                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1733         }
1734         priv->tx(dev, skb);
1735         return 0;
1736 }
1737
1738 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1739 {
1740         struct p54_common *priv = dev->priv;
1741         struct sk_buff *skb;
1742         struct p54_hdr *hdr;
1743         struct p54_scan_head *head;
1744         struct p54_iq_autocal_entry *iq_autocal;
1745         union p54_scan_body_union *body;
1746         struct p54_scan_tail_rate *rate;
1747         struct pda_rssi_cal_entry *rssi;
1748         unsigned int i;
1749         void *entry;
1750         int band = dev->conf.channel->band;
1751         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1752
1753         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1754                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1755                             sizeof(*rate) + 2 * sizeof(*rssi),
1756                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1757         if (!skb)
1758                 return -ENOMEM;
1759
1760         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1761         memset(head->scan_params, 0, sizeof(head->scan_params));
1762         head->mode = cpu_to_le16(mode);
1763         head->dwell = cpu_to_le16(dwell);
1764         head->freq = freq;
1765
1766         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1767                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1768                 *pa_power_points = cpu_to_le16(0x0c);
1769         }
1770
1771         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1772         for (i = 0; i < priv->iq_autocal_len; i++) {
1773                 if (priv->iq_autocal[i].freq != freq)
1774                         continue;
1775
1776                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1777                        sizeof(struct p54_iq_autocal_entry));
1778                 break;
1779         }
1780         if (i == priv->iq_autocal_len)
1781                 goto err;
1782
1783         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1784                 body = (void *) skb_put(skb, sizeof(body->longbow));
1785         else
1786                 body = (void *) skb_put(skb, sizeof(body->normal));
1787
1788         for (i = 0; i < priv->output_limit->entries; i++) {
1789                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1790                                      priv->output_limit->entry_size * i);
1791
1792                 if (*entry_freq != freq)
1793                         continue;
1794
1795                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1796                         memcpy(&body->longbow.power_limits,
1797                                (void *) entry_freq + sizeof(__le16),
1798                                priv->output_limit->entry_size);
1799                 } else {
1800                         struct pda_channel_output_limit *limits =
1801                                (void *) entry_freq;
1802
1803                         body->normal.val_barker = 0x38;
1804                         body->normal.val_bpsk = body->normal.dup_bpsk =
1805                                 limits->val_bpsk;
1806                         body->normal.val_qpsk = body->normal.dup_qpsk =
1807                                 limits->val_qpsk;
1808                         body->normal.val_16qam = body->normal.dup_16qam =
1809                                 limits->val_16qam;
1810                         body->normal.val_64qam = body->normal.dup_64qam =
1811                                 limits->val_64qam;
1812                 }
1813                 break;
1814         }
1815         if (i == priv->output_limit->entries)
1816                 goto err;
1817
1818         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1819         for (i = 0; i < priv->curve_data->entries; i++) {
1820                 if (*((__le16 *)entry) != freq) {
1821                         entry += priv->curve_data->entry_size;
1822                         continue;
1823                 }
1824
1825                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1826                         memcpy(&body->longbow.curve_data,
1827                                 (void *) entry + sizeof(__le16),
1828                                 priv->curve_data->entry_size);
1829                 } else {
1830                         struct p54_scan_body *chan = &body->normal;
1831                         struct pda_pa_curve_data *curve_data =
1832                                 (void *) priv->curve_data->data;
1833
1834                         entry += sizeof(__le16);
1835                         chan->pa_points_per_curve = 8;
1836                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1837                         memcpy(chan->curve_data, entry,
1838                                sizeof(struct p54_pa_curve_data_sample) *
1839                                min((u8)8, curve_data->points_per_channel));
1840                 }
1841                 break;
1842         }
1843         if (i == priv->curve_data->entries)
1844                 goto err;
1845
1846         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1847                 rate = (void *) skb_put(skb, sizeof(*rate));
1848                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1849                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1850                         rate->rts_rates[i] = i;
1851         }
1852
1853         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1854         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1855         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1856         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1857                 /* Longbow frontend needs ever more */
1858                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1859                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1860                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1861         }
1862
1863         if (priv->fw_var >= 0x509) {
1864                 rate = (void *) skb_put(skb, sizeof(*rate));
1865                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1866                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1867                         rate->rts_rates[i] = i;
1868         }
1869
1870         hdr = (struct p54_hdr *) skb->data;
1871         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1872
1873         priv->tx(dev, skb);
1874         return 0;
1875
1876  err:
1877         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1878         p54_free_skb(dev, skb);
1879         return -EINVAL;
1880 }
1881
1882 static int p54_set_leds(struct ieee80211_hw *dev)
1883 {
1884         struct p54_common *priv = dev->priv;
1885         struct sk_buff *skb;
1886         struct p54_led *led;
1887
1888         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1889                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1890         if (!skb)
1891                 return -ENOMEM;
1892
1893         led = (struct p54_led *) skb_put(skb, sizeof(*led));
1894         led->flags = cpu_to_le16(0x0003);
1895         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1896         led->delay[0] = cpu_to_le16(1);
1897         led->delay[1] = cpu_to_le16(0);
1898         priv->tx(dev, skb);
1899         return 0;
1900 }
1901
1902 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1903 do {                                                            \
1904         queue.aifs = cpu_to_le16(ai_fs);                        \
1905         queue.cwmin = cpu_to_le16(cw_min);                      \
1906         queue.cwmax = cpu_to_le16(cw_max);                      \
1907         queue.txop = cpu_to_le16(_txop);                        \
1908 } while(0)
1909
1910 static int p54_set_edcf(struct ieee80211_hw *dev)
1911 {
1912         struct p54_common *priv = dev->priv;
1913         struct sk_buff *skb;
1914         struct p54_edcf *edcf;
1915
1916         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1917                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1918         if (!skb)
1919                 return -ENOMEM;
1920
1921         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1922         if (priv->use_short_slot) {
1923                 edcf->slottime = 9;
1924                 edcf->sifs = 0x10;
1925                 edcf->eofpad = 0x00;
1926         } else {
1927                 edcf->slottime = 20;
1928                 edcf->sifs = 0x0a;
1929                 edcf->eofpad = 0x06;
1930         }
1931         /* (see prism54/isl_oid.h for further details) */
1932         edcf->frameburst = cpu_to_le16(0);
1933         edcf->round_trip_delay = cpu_to_le16(0);
1934         edcf->flags = 0;
1935         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1936         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1937         priv->tx(dev, skb);
1938         return 0;
1939 }
1940
1941 static int p54_set_ps(struct ieee80211_hw *dev)
1942 {
1943         struct p54_common *priv = dev->priv;
1944         struct sk_buff *skb;
1945         struct p54_psm *psm;
1946         u16 mode;
1947         int i;
1948
1949         if (dev->conf.flags & IEEE80211_CONF_PS)
1950                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1951                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
1952         else
1953                 mode = P54_PSM_CAM;
1954
1955         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1956                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1957         if (!skb)
1958                 return -ENOMEM;
1959
1960         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1961         psm->mode = cpu_to_le16(mode);
1962         psm->aid = cpu_to_le16(priv->aid);
1963         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1964                 psm->intervals[i].interval =
1965                         cpu_to_le16(dev->conf.listen_interval);
1966                 psm->intervals[i].periods = cpu_to_le16(1);
1967         }
1968
1969         psm->beacon_rssi_skip_max = 200;
1970         psm->rssi_delta_threshold = 0;
1971         psm->nr = 10;
1972         psm->exclude[0] = 0;
1973
1974         priv->tx(dev, skb);
1975
1976         return 0;
1977 }
1978
1979 static int p54_beacon_tim(struct sk_buff *skb)
1980 {
1981         /*
1982          * the good excuse for this mess is ... the firmware.
1983          * The dummy TIM MUST be at the end of the beacon frame,
1984          * because it'll be overwritten!
1985          */
1986
1987         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1988         u8 *pos, *end;
1989
1990         if (skb->len <= sizeof(mgmt))
1991                 return -EINVAL;
1992
1993         pos = (u8 *)mgmt->u.beacon.variable;
1994         end = skb->data + skb->len;
1995         while (pos < end) {
1996                 if (pos + 2 + pos[1] > end)
1997                         return -EINVAL;
1998
1999                 if (pos[0] == WLAN_EID_TIM) {
2000                         u8 dtim_len = pos[1];
2001                         u8 dtim_period = pos[3];
2002                         u8 *next = pos + 2 + dtim_len;
2003
2004                         if (dtim_len < 3)
2005                                 return -EINVAL;
2006
2007                         memmove(pos, next, end - next);
2008
2009                         if (dtim_len > 3)
2010                                 skb_trim(skb, skb->len - (dtim_len - 3));
2011
2012                         pos = end - (dtim_len + 2);
2013
2014                         /* add the dummy at the end */
2015                         pos[0] = WLAN_EID_TIM;
2016                         pos[1] = 3;
2017                         pos[2] = 0;
2018                         pos[3] = dtim_period;
2019                         pos[4] = 0;
2020                         return 0;
2021                 }
2022                 pos += 2 + pos[1];
2023         }
2024         return 0;
2025 }
2026
2027 static int p54_beacon_update(struct ieee80211_hw *dev,
2028                         struct ieee80211_vif *vif)
2029 {
2030         struct p54_common *priv = dev->priv;
2031         struct sk_buff *beacon;
2032         int ret;
2033
2034         if (priv->cached_beacon) {
2035                 p54_tx_cancel(dev, priv->cached_beacon);
2036                 /* wait for the last beacon the be freed */
2037                 msleep(10);
2038         }
2039
2040         beacon = ieee80211_beacon_get(dev, vif);
2041         if (!beacon)
2042                 return -ENOMEM;
2043         ret = p54_beacon_tim(beacon);
2044         if (ret)
2045                 return ret;
2046         ret = p54_tx(dev, beacon);
2047         if (ret)
2048                 return ret;
2049         priv->cached_beacon = beacon;
2050         priv->tsf_high32 = 0;
2051         priv->tsf_low32 = 0;
2052
2053         return 0;
2054 }
2055
2056 static int p54_start(struct ieee80211_hw *dev)
2057 {
2058         struct p54_common *priv = dev->priv;
2059         int err;
2060
2061         mutex_lock(&priv->conf_mutex);
2062         err = priv->open(dev);
2063         if (err)
2064                 goto out;
2065         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2066         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2067         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2068         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2069         err = p54_set_edcf(dev);
2070         if (err)
2071                 goto out;
2072
2073         memset(priv->bssid, ~0, ETH_ALEN);
2074         priv->mode = NL80211_IFTYPE_MONITOR;
2075         err = p54_setup_mac(dev);
2076         if (err) {
2077                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2078                 goto out;
2079         }
2080
2081         queue_delayed_work(dev->workqueue, &priv->work, 0);
2082
2083         priv->softled_state = 0;
2084         err = p54_set_leds(dev);
2085
2086 out:
2087         mutex_unlock(&priv->conf_mutex);
2088         return err;
2089 }
2090
2091 static void p54_stop(struct ieee80211_hw *dev)
2092 {
2093         struct p54_common *priv = dev->priv;
2094         struct sk_buff *skb;
2095
2096         mutex_lock(&priv->conf_mutex);
2097         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2098         priv->softled_state = 0;
2099         p54_set_leds(dev);
2100
2101 #ifdef CONFIG_P54_LEDS
2102         cancel_delayed_work_sync(&priv->led_work);
2103 #endif /* CONFIG_P54_LEDS */
2104         cancel_delayed_work_sync(&priv->work);
2105         if (priv->cached_beacon)
2106                 p54_tx_cancel(dev, priv->cached_beacon);
2107
2108         priv->stop(dev);
2109         while ((skb = skb_dequeue(&priv->tx_queue)))
2110                 kfree_skb(skb);
2111         priv->cached_beacon = NULL;
2112         priv->tsf_high32 = priv->tsf_low32 = 0;
2113         mutex_unlock(&priv->conf_mutex);
2114 }
2115
2116 static int p54_add_interface(struct ieee80211_hw *dev,
2117                              struct ieee80211_if_init_conf *conf)
2118 {
2119         struct p54_common *priv = dev->priv;
2120
2121         mutex_lock(&priv->conf_mutex);
2122         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2123                 mutex_unlock(&priv->conf_mutex);
2124                 return -EOPNOTSUPP;
2125         }
2126
2127         priv->vif = conf->vif;
2128
2129         switch (conf->type) {
2130         case NL80211_IFTYPE_STATION:
2131         case NL80211_IFTYPE_ADHOC:
2132         case NL80211_IFTYPE_AP:
2133         case NL80211_IFTYPE_MESH_POINT:
2134                 priv->mode = conf->type;
2135                 break;
2136         default:
2137                 mutex_unlock(&priv->conf_mutex);
2138                 return -EOPNOTSUPP;
2139         }
2140
2141         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2142         p54_setup_mac(dev);
2143         mutex_unlock(&priv->conf_mutex);
2144         return 0;
2145 }
2146
2147 static void p54_remove_interface(struct ieee80211_hw *dev,
2148                                  struct ieee80211_if_init_conf *conf)
2149 {
2150         struct p54_common *priv = dev->priv;
2151
2152         mutex_lock(&priv->conf_mutex);
2153         priv->vif = NULL;
2154         if (priv->cached_beacon)
2155                 p54_tx_cancel(dev, priv->cached_beacon);
2156         priv->mode = NL80211_IFTYPE_MONITOR;
2157         memset(priv->mac_addr, 0, ETH_ALEN);
2158         memset(priv->bssid, 0, ETH_ALEN);
2159         p54_setup_mac(dev);
2160         mutex_unlock(&priv->conf_mutex);
2161 }
2162
2163 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2164 {
2165         int ret = 0;
2166         struct p54_common *priv = dev->priv;
2167         struct ieee80211_conf *conf = &dev->conf;
2168
2169         mutex_lock(&priv->conf_mutex);
2170         if (changed & IEEE80211_CONF_CHANGE_POWER)
2171                 priv->output_power = conf->power_level << 2;
2172         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2173                 ret = p54_setup_mac(dev);
2174                 if (ret)
2175                         goto out;
2176         }
2177         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2178                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2179                 if (ret)
2180                         goto out;
2181         }
2182         if (changed & IEEE80211_CONF_CHANGE_PS) {
2183                 ret = p54_set_ps(dev);
2184                 if (ret)
2185                         goto out;
2186         }
2187
2188 out:
2189         mutex_unlock(&priv->conf_mutex);
2190         return ret;
2191 }
2192
2193 static void p54_configure_filter(struct ieee80211_hw *dev,
2194                                  unsigned int changed_flags,
2195                                  unsigned int *total_flags,
2196                                  int mc_count, struct dev_mc_list *mclist)
2197 {
2198         struct p54_common *priv = dev->priv;
2199
2200         *total_flags &= FIF_PROMISC_IN_BSS |
2201                         FIF_OTHER_BSS;
2202
2203         priv->filter_flags = *total_flags;
2204
2205         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2206                 p54_setup_mac(dev);
2207 }
2208
2209 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2210                        const struct ieee80211_tx_queue_params *params)
2211 {
2212         struct p54_common *priv = dev->priv;
2213         int ret;
2214
2215         mutex_lock(&priv->conf_mutex);
2216         if ((params) && !(queue > 4)) {
2217                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2218                         params->cw_min, params->cw_max, params->txop);
2219                 ret = p54_set_edcf(dev);
2220         } else
2221                 ret = -EINVAL;
2222         mutex_unlock(&priv->conf_mutex);
2223         return ret;
2224 }
2225
2226 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2227 {
2228         struct p54_common *priv = dev->priv;
2229         struct sk_buff *skb;
2230         struct p54_xbow_synth *xbow;
2231
2232         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2233                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2234         if (!skb)
2235                 return -ENOMEM;
2236
2237         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2238         xbow->magic1 = cpu_to_le16(0x1);
2239         xbow->magic2 = cpu_to_le16(0x2);
2240         xbow->freq = cpu_to_le16(5390);
2241         memset(xbow->padding, 0, sizeof(xbow->padding));
2242         priv->tx(dev, skb);
2243         return 0;
2244 }
2245
2246 static void p54_work(struct work_struct *work)
2247 {
2248         struct p54_common *priv = container_of(work, struct p54_common,
2249                                                work.work);
2250         struct ieee80211_hw *dev = priv->hw;
2251         struct sk_buff *skb;
2252
2253         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2254                 return ;
2255
2256         /*
2257          * TODO: walk through tx_queue and do the following tasks
2258          *      1. initiate bursts.
2259          *      2. cancel stuck frames / reset the device if necessary.
2260          */
2261
2262         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2263                             sizeof(struct p54_statistics),
2264                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2265         if (!skb)
2266                 return ;
2267
2268         priv->tx(dev, skb);
2269 }
2270
2271 static int p54_get_stats(struct ieee80211_hw *dev,
2272                          struct ieee80211_low_level_stats *stats)
2273 {
2274         struct p54_common *priv = dev->priv;
2275
2276         memcpy(stats, &priv->stats, sizeof(*stats));
2277         return 0;
2278 }
2279
2280 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2281                             struct ieee80211_tx_queue_stats *stats)
2282 {
2283         struct p54_common *priv = dev->priv;
2284
2285         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2286                sizeof(stats[0]) * dev->queues);
2287         return 0;
2288 }
2289
2290 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2291                                  struct ieee80211_vif *vif,
2292                                  struct ieee80211_bss_conf *info,
2293                                  u32 changed)
2294 {
2295         struct p54_common *priv = dev->priv;
2296         int ret;
2297
2298         mutex_lock(&priv->conf_mutex);
2299         if (changed & BSS_CHANGED_BSSID) {
2300                 memcpy(priv->bssid, info->bssid, ETH_ALEN);
2301                 ret = p54_setup_mac(dev);
2302                 if (ret)
2303                         goto out;
2304         }
2305
2306         if (changed & BSS_CHANGED_BEACON) {
2307                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2308                 if (ret)
2309                         goto out;
2310                 ret = p54_setup_mac(dev);
2311                 if (ret)
2312                         goto out;
2313                 ret = p54_beacon_update(dev, vif);
2314                 if (ret)
2315                         goto out;
2316         }
2317         /* XXX: this mimics having two callbacks... clean up */
2318  out:
2319         mutex_unlock(&priv->conf_mutex);
2320
2321         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
2322                 priv->use_short_slot = info->use_short_slot;
2323                 p54_set_edcf(dev);
2324         }
2325         if (changed & BSS_CHANGED_BASIC_RATES) {
2326                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2327                         priv->basic_rate_mask = (info->basic_rates << 4);
2328                 else
2329                         priv->basic_rate_mask = info->basic_rates;
2330                 p54_setup_mac(dev);
2331                 if (priv->fw_var >= 0x500)
2332                         p54_scan(dev, P54_SCAN_EXIT, 0);
2333         }
2334         if (changed & BSS_CHANGED_ASSOC) {
2335                 if (info->assoc) {
2336                         priv->aid = info->aid;
2337                         priv->wakeup_timer = info->beacon_int *
2338                                              info->dtim_period * 5;
2339                         p54_setup_mac(dev);
2340                 }
2341         }
2342 }
2343
2344 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2345                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2346                        struct ieee80211_key_conf *key)
2347 {
2348         struct p54_common *priv = dev->priv;
2349         struct sk_buff *skb;
2350         struct p54_keycache *rxkey;
2351         int slot, ret = 0;
2352         u8 algo = 0;
2353
2354         if (modparam_nohwcrypt)
2355                 return -EOPNOTSUPP;
2356
2357         mutex_lock(&priv->conf_mutex);
2358         if (cmd == SET_KEY) {
2359                 switch (key->alg) {
2360                 case ALG_TKIP:
2361                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2362                               BR_DESC_PRIV_CAP_TKIP))) {
2363                                 ret = -EOPNOTSUPP;
2364                                 goto out_unlock;
2365                         }
2366                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2367                         algo = P54_CRYPTO_TKIPMICHAEL;
2368                         break;
2369                 case ALG_WEP:
2370                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
2371                                 ret = -EOPNOTSUPP;
2372                                 goto out_unlock;
2373                         }
2374                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2375                         algo = P54_CRYPTO_WEP;
2376                         break;
2377                 case ALG_CCMP:
2378                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
2379                                 ret = -EOPNOTSUPP;
2380                                 goto out_unlock;
2381                         }
2382                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2383                         algo = P54_CRYPTO_AESCCMP;
2384                         break;
2385                 default:
2386                         ret = -EOPNOTSUPP;
2387                         goto out_unlock;
2388                 }
2389                 slot = bitmap_find_free_region(priv->used_rxkeys,
2390                                                priv->rx_keycache_size, 0);
2391
2392                 if (slot < 0) {
2393                         /*
2394                          * The device supports the choosen algorithm, but the
2395                          * firmware does not provide enough key slots to store
2396                          * all of them.
2397                          * But encryption offload for outgoing frames is always
2398                          * possible, so we just pretend that the upload was
2399                          * successful and do the decryption in software.
2400                          */
2401
2402                         /* mark the key as invalid. */
2403                         key->hw_key_idx = 0xff;
2404                         goto out_unlock;
2405                 }
2406         } else {
2407                 slot = key->hw_key_idx;
2408
2409                 if (slot == 0xff) {
2410                         /* This key was not uploaded into the rx key cache. */
2411
2412                         goto out_unlock;
2413                 }
2414
2415                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2416                 algo = 0;
2417         }
2418
2419         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2420                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
2421         if (!skb) {
2422                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2423                 ret = -ENOSPC;
2424                 goto out_unlock;
2425         }
2426
2427         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2428         rxkey->entry = slot;
2429         rxkey->key_id = key->keyidx;
2430         rxkey->key_type = algo;
2431         if (sta)
2432                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2433         else
2434                 memset(rxkey->mac, ~0, ETH_ALEN);
2435         if (key->alg != ALG_TKIP) {
2436                 rxkey->key_len = min((u8)16, key->keylen);
2437                 memcpy(rxkey->key, key->key, rxkey->key_len);
2438         } else {
2439                 rxkey->key_len = 24;
2440                 memcpy(rxkey->key, key->key, 16);
2441                 memcpy(&(rxkey->key[16]), &(key->key
2442                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2443         }
2444
2445         priv->tx(dev, skb);
2446         key->hw_key_idx = slot;
2447
2448 out_unlock:
2449         mutex_unlock(&priv->conf_mutex);
2450         return ret;
2451 }
2452
2453 #ifdef CONFIG_P54_LEDS
2454 static void p54_update_leds(struct work_struct *work)
2455 {
2456         struct p54_common *priv = container_of(work, struct p54_common,
2457                                                led_work.work);
2458         int err, i, tmp, blink_delay = 400;
2459         bool rerun = false;
2460
2461         /* Don't toggle the LED, when the device is down. */
2462         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2463                 return ;
2464
2465         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2466                 if (priv->leds[i].toggled) {
2467                         priv->softled_state |= BIT(i);
2468
2469                         tmp = 70 + 200 / (priv->leds[i].toggled);
2470                         if (tmp < blink_delay)
2471                                 blink_delay = tmp;
2472
2473                         if (priv->leds[i].led_dev.brightness == LED_OFF)
2474                                 rerun = true;
2475
2476                         priv->leds[i].toggled =
2477                                 !!priv->leds[i].led_dev.brightness;
2478                 } else
2479                         priv->softled_state &= ~BIT(i);
2480
2481         err = p54_set_leds(priv->hw);
2482         if (err && net_ratelimit())
2483                 printk(KERN_ERR "%s: failed to update LEDs.\n",
2484                         wiphy_name(priv->hw->wiphy));
2485
2486         if (rerun)
2487                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2488                         msecs_to_jiffies(blink_delay));
2489 }
2490
2491 static void p54_led_brightness_set(struct led_classdev *led_dev,
2492                                    enum led_brightness brightness)
2493 {
2494         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2495                                                led_dev);
2496         struct ieee80211_hw *dev = led->hw_dev;
2497         struct p54_common *priv = dev->priv;
2498
2499         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2500                 return ;
2501
2502         if (brightness) {
2503                 led->toggled++;
2504                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2505                                    HZ/10);
2506         }
2507 }
2508
2509 static int p54_register_led(struct ieee80211_hw *dev,
2510                             unsigned int led_index,
2511                             char *name, char *trigger)
2512 {
2513         struct p54_common *priv = dev->priv;
2514         struct p54_led_dev *led = &priv->leds[led_index];
2515         int err;
2516
2517         if (led->registered)
2518                 return -EEXIST;
2519
2520         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2521                  wiphy_name(dev->wiphy), name);
2522         led->hw_dev = dev;
2523         led->index = led_index;
2524         led->led_dev.name = led->name;
2525         led->led_dev.default_trigger = trigger;
2526         led->led_dev.brightness_set = p54_led_brightness_set;
2527
2528         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2529         if (err)
2530                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2531                         wiphy_name(dev->wiphy), name);
2532         else
2533                 led->registered = 1;
2534
2535         return err;
2536 }
2537
2538 static int p54_init_leds(struct ieee80211_hw *dev)
2539 {
2540         struct p54_common *priv = dev->priv;
2541         int err;
2542
2543         /*
2544          * TODO:
2545          * Figure out if the EEPROM contains some hints about the number
2546          * of available/programmable LEDs of the device.
2547          */
2548
2549         INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2550
2551         err = p54_register_led(dev, 0, "assoc",
2552                                ieee80211_get_assoc_led_name(dev));
2553         if (err)
2554                 return err;
2555
2556         err = p54_register_led(dev, 1, "tx",
2557                                ieee80211_get_tx_led_name(dev));
2558         if (err)
2559                 return err;
2560
2561         err = p54_register_led(dev, 2, "rx",
2562                                ieee80211_get_rx_led_name(dev));
2563         if (err)
2564                 return err;
2565
2566         err = p54_register_led(dev, 3, "radio",
2567                                ieee80211_get_radio_led_name(dev));
2568         if (err)
2569                 return err;
2570
2571         err = p54_set_leds(dev);
2572         return err;
2573 }
2574
2575 static void p54_unregister_leds(struct ieee80211_hw *dev)
2576 {
2577         struct p54_common *priv = dev->priv;
2578         int i;
2579
2580         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2581                 if (priv->leds[i].registered)
2582                         led_classdev_unregister(&priv->leds[i].led_dev);
2583 }
2584 #endif /* CONFIG_P54_LEDS */
2585
2586 static const struct ieee80211_ops p54_ops = {
2587         .tx                     = p54_tx,
2588         .start                  = p54_start,
2589         .stop                   = p54_stop,
2590         .add_interface          = p54_add_interface,
2591         .remove_interface       = p54_remove_interface,
2592         .set_tim                = p54_set_tim,
2593         .sta_notify             = p54_sta_notify,
2594         .set_key                = p54_set_key,
2595         .config                 = p54_config,
2596         .bss_info_changed       = p54_bss_info_changed,
2597         .configure_filter       = p54_configure_filter,
2598         .conf_tx                = p54_conf_tx,
2599         .get_stats              = p54_get_stats,
2600         .get_tx_stats           = p54_get_tx_stats
2601 };
2602
2603 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2604 {
2605         struct ieee80211_hw *dev;
2606         struct p54_common *priv;
2607
2608         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2609         if (!dev)
2610                 return NULL;
2611
2612         priv = dev->priv;
2613         priv->hw = dev;
2614         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2615         priv->basic_rate_mask = 0x15f;
2616         skb_queue_head_init(&priv->tx_queue);
2617         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2618                      IEEE80211_HW_SIGNAL_DBM |
2619                      IEEE80211_HW_NOISE_DBM;
2620
2621         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2622                                       BIT(NL80211_IFTYPE_ADHOC) |
2623                                       BIT(NL80211_IFTYPE_AP) |
2624                                       BIT(NL80211_IFTYPE_MESH_POINT);
2625
2626         dev->channel_change_time = 1000;        /* TODO: find actual value */
2627         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2628         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2629         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2630         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2631         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2632         dev->queues = 1;
2633         priv->noise = -94;
2634         /*
2635          * We support at most 8 tries no matter which rate they're at,
2636          * we cannot support max_rates * max_rate_tries as we set it
2637          * here, but setting it correctly to 4/2 or so would limit us
2638          * artificially if the RC algorithm wants just two rates, so
2639          * let's say 4/7, we'll redistribute it at TX time, see the
2640          * comments there.
2641          */
2642         dev->max_rates = 4;
2643         dev->max_rate_tries = 7;
2644         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2645                                  sizeof(struct p54_tx_data);
2646
2647         mutex_init(&priv->conf_mutex);
2648         init_completion(&priv->eeprom_comp);
2649         INIT_DELAYED_WORK(&priv->work, p54_work);
2650
2651         return dev;
2652 }
2653 EXPORT_SYMBOL_GPL(p54_init_common);
2654
2655 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2656 {
2657         int err;
2658
2659         err = ieee80211_register_hw(dev);
2660         if (err) {
2661                 dev_err(pdev, "Cannot register device (%d).\n", err);
2662                 return err;
2663         }
2664
2665 #ifdef CONFIG_P54_LEDS
2666         err = p54_init_leds(dev);
2667         if (err)
2668                 return err;
2669 #endif /* CONFIG_P54_LEDS */
2670
2671         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2672         return 0;
2673 }
2674 EXPORT_SYMBOL_GPL(p54_register_common);
2675
2676 void p54_free_common(struct ieee80211_hw *dev)
2677 {
2678         struct p54_common *priv = dev->priv;
2679         kfree(priv->iq_autocal);
2680         kfree(priv->output_limit);
2681         kfree(priv->curve_data);
2682         kfree(priv->used_rxkeys);
2683
2684 #ifdef CONFIG_P54_LEDS
2685         p54_unregister_leds(dev);
2686 #endif /* CONFIG_P54_LEDS */
2687 }
2688 EXPORT_SYMBOL_GPL(p54_free_common);