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         u32 freed = 0, last_addr = priv->rx_start;
 826
 827         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 828                 return;
 829
 830         /*
 831          * don't try to free an already unlinked skb
 832          */
 833         if (unlikely((!skb->next) || (!skb->prev)))
 834                 return;
 835
 836         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 837         info = IEEE80211_SKB_CB(skb);
 838         range = (void *)info->rate_driver_data;
 839         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 840                 struct ieee80211_tx_info *ni;
 841                 struct p54_tx_info *mr;
 842
 843                 ni = IEEE80211_SKB_CB(skb->prev);
 844                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 845                 last_addr = mr->end_addr;
 846         }
 847         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 848                 struct ieee80211_tx_info *ni;
 849                 struct p54_tx_info *mr;
 850
 851                 ni = IEEE80211_SKB_CB(skb->next);
 852                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 853                 freed = mr->start_addr - last_addr;
 854         } else
 855                 freed = priv->rx_end - last_addr;
 856         __skb_unlink(skb, &priv->tx_queue);
 857         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 858         dev_kfree_skb_any(skb);
 859
 860         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 861                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 862                 p54_wake_free_queues(dev);
 863 }
 864 EXPORT_SYMBOL_GPL(p54_free_skb);
 865
 866 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 867                                            __le32 req_id)
 868 {
 869         struct p54_common *priv = dev->priv;
 870         struct sk_buff *entry;
 871         unsigned long flags;
 872
 873         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 874         entry = priv->tx_queue.next;
 875         while (entry != (struct sk_buff *)&priv->tx_queue) {
 876                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 877
 878                 if (hdr->req_id == req_id) {
 879                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 880                         return entry;
 881                 }
 882                 entry = entry->next;
 883         }
 884         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 885         return NULL;
 886 }
 887
 888 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 889 {
 890         struct p54_common *priv = dev->priv;
 891         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 892         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 893         struct sk_buff *entry;
 894         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 895         struct p54_tx_info *range = NULL;
 896         u32 freed = 0;
 897         u32 last_addr = priv->rx_start;
 898         unsigned long flags;
 899         int count, idx;
 900
 901         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 902         entry = (struct sk_buff *) priv->tx_queue.next;
 903         while (entry != (struct sk_buff *)&priv->tx_queue) {
 904                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 905                 struct p54_hdr *entry_hdr;
 906                 struct p54_tx_data *entry_data;
 907                 unsigned int pad = 0, frame_len;
 908
 909                 range = (void *)info->rate_driver_data;
 910                 if (range->start_addr != addr) {
 911                         last_addr = range->end_addr;
 912                         entry = entry->next;
 913                         continue;
 914                 }
 915
 916                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 917                         struct ieee80211_tx_info *ni;
 918                         struct p54_tx_info *mr;
 919
 920                         ni = IEEE80211_SKB_CB(entry->next);
 921                         mr = (struct p54_tx_info *)ni->rate_driver_data;
 922                         freed = mr->start_addr - last_addr;
 923                 } else
 924                         freed = priv->rx_end - last_addr;
 925
 926                 last_addr = range->end_addr;
 927                 __skb_unlink(entry, &priv->tx_queue);
 928                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 929
 930                 frame_len = entry->len;
 931                 entry_hdr = (struct p54_hdr *) entry->data;
 932                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 933                 priv->tx_stats[entry_data->hw_queue].len--;
 934                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 935
 936                 /*
 937                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 938                  * generated by the driver. Therefore tx_status is bogus
 939                  * and we don't want to confuse the mac80211 stack.
 940                  */
 941                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 942                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 943                                 priv->cached_beacon = NULL;
 944
 945                         kfree_skb(entry);
 946                         goto out;
 947                 }
 948
 949                 /*
 950                  * Clear manually, ieee80211_tx_info_clear_status would
 951                  * clear the counts too and we need them.
 952                  */
 953                 memset(&info->status.ampdu_ack_len, 0,
 954                        sizeof(struct ieee80211_tx_info) -
 955                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 956                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 957                                       status.ampdu_ack_len) != 23);
 958
 959                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 960                         pad = entry_data->align[0];
 961
 962                 /* walk through the rates array and adjust the counts */
 963                 count = payload->tries;
 964                 for (idx = 0; idx < 4; idx++) {
 965                         if (count >= info->status.rates[idx].count) {
 966                                 count -= info->status.rates[idx].count;
 967                         } else if (count > 0) {
 968                                 info->status.rates[idx].count = count;
 969                                 count = 0;
 970                         } else {
 971                                 info->status.rates[idx].idx = -1;
 972                                 info->status.rates[idx].count = 0;
 973                         }
 974                 }
 975
 976                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 977                      (!payload->status))
 978                         info->flags |= IEEE80211_TX_STAT_ACK;
 979                 if (payload->status & P54_TX_PSM_CANCELLED)
 980                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 981                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 982                                 (int)payload->ack_rssi);
 983
 984                 /* Undo all changes to the frame. */
 985                 switch (entry_data->key_type) {
 986                 case P54_CRYPTO_TKIPMICHAEL: {
 987                         u8 *iv = (u8 *)(entry_data->align + pad +
 988                                         entry_data->crypt_offset);
 989
 990                         /* Restore the original TKIP IV. */
 991                         iv[2] = iv[0];
 992                         iv[0] = iv[1];
 993                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 994
 995                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 996                         break;
 997                         }
 998                 case P54_CRYPTO_AESCCMP:
 999                         frame_len -= 8; /* remove CCMP_MIC */
1000                         break;
1001                 case P54_CRYPTO_WEP:
1002                         frame_len -= 4; /* remove WEP_ICV */
1003                         break;
1004                 }
1005                 skb_trim(entry, frame_len);
1006                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
1007                 ieee80211_tx_status_irqsafe(dev, entry);
1008                 goto out;
1009         }
1010         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1011
1012 out:
1013         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
1014                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1015                 p54_wake_free_queues(dev);
1016 }
1017
1018 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1019                                    struct sk_buff *skb)
1020 {
1021         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1022         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1023         struct p54_common *priv = dev->priv;
1024
1025         if (!priv->eeprom)
1026                 return ;
1027
1028         if (priv->fw_var >= 0x509) {
1029                 memcpy(priv->eeprom, eeprom->v2.data,
1030                        le16_to_cpu(eeprom->v2.len));
1031         } else {
1032                 memcpy(priv->eeprom, eeprom->v1.data,
1033                        le16_to_cpu(eeprom->v1.len));
1034         }
1035
1036         complete(&priv->eeprom_comp);
1037 }
1038
1039 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1040 {
1041         struct p54_common *priv = dev->priv;
1042         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1043         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1044         u32 tsf32;
1045
1046         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1047                 return ;
1048
1049         tsf32 = le32_to_cpu(stats->tsf32);
1050         if (tsf32 < priv->tsf_low32)
1051                 priv->tsf_high32++;
1052         priv->tsf_low32 = tsf32;
1053
1054         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1055         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1056         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1057
1058         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1059
1060         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1061 }
1062
1063 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1064 {
1065         struct p54_common *priv = dev->priv;
1066         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1067         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1068         u16 event = le16_to_cpu(trap->event);
1069         u16 freq = le16_to_cpu(trap->frequency);
1070
1071         switch (event) {
1072         case P54_TRAP_BEACON_TX:
1073                 break;
1074         case P54_TRAP_RADAR:
1075                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1076                         wiphy_name(dev->wiphy), freq);
1077                 break;
1078         case P54_TRAP_NO_BEACON:
1079                 if (priv->vif)
1080                         ieee80211_beacon_loss(priv->vif);
1081                 break;
1082         case P54_TRAP_SCAN:
1083                 break;
1084         case P54_TRAP_TBTT:
1085                 break;
1086         case P54_TRAP_TIMER:
1087                 break;
1088         default:
1089                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1090                        wiphy_name(dev->wiphy), event, freq);
1091                 break;
1092         }
1093 }
1094
1095 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1096 {
1097         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1098
1099         switch (le16_to_cpu(hdr->type)) {
1100         case P54_CONTROL_TYPE_TXDONE:
1101                 p54_rx_frame_sent(dev, skb);
1102                 break;
1103         case P54_CONTROL_TYPE_TRAP:
1104                 p54_rx_trap(dev, skb);
1105                 break;
1106         case P54_CONTROL_TYPE_BBP:
1107                 break;
1108         case P54_CONTROL_TYPE_STAT_READBACK:
1109                 p54_rx_stats(dev, skb);
1110                 break;
1111         case P54_CONTROL_TYPE_EEPROM_READBACK:
1112                 p54_rx_eeprom_readback(dev, skb);
1113                 break;
1114         default:
1115                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1116                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1117                 break;
1118         }
1119
1120         return 0;
1121 }
1122
1123 /* returns zero if skb can be reused */
1124 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1125 {
1126         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1127
1128         if (type & P54_HDR_FLAG_CONTROL)
1129                 return p54_rx_control(dev, skb);
1130         else
1131                 return p54_rx_data(dev, skb);
1132 }
1133 EXPORT_SYMBOL_GPL(p54_rx);
1134
1135 /*
1136  * So, the firmware is somewhat stupid and doesn't know what places in its
1137  * memory incoming data should go to. By poking around in the firmware, we
1138  * can find some unused memory to upload our packets to. However, data that we
1139  * want the card to TX needs to stay intact until the card has told us that
1140  * it is done with it. This function finds empty places we can upload to and
1141  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1142  * p54_free_skb frees allocated areas.
1143  */
1144 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1145                                struct p54_hdr *data, u32 len)
1146 {
1147         struct p54_common *priv = dev->priv;
1148         struct sk_buff *entry;
1149         struct sk_buff *target_skb = NULL;
1150         struct ieee80211_tx_info *info;
1151         struct p54_tx_info *range;
1152         u32 last_addr = priv->rx_start;
1153         u32 largest_hole = 0;
1154         u32 target_addr = priv->rx_start;
1155         unsigned long flags;
1156         unsigned int left;
1157         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1158
1159         if (!skb)
1160                 return -EINVAL;
1161
1162         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1163
1164         left = skb_queue_len(&priv->tx_queue);
1165         if (unlikely(left >= 28)) {
1166                 /*
1167                  * The tx_queue is nearly full!
1168                  * We have throttle normal data traffic, because we must
1169                  * have a few spare slots for control frames left.
1170                  */
1171                 ieee80211_stop_queues(dev);
1172                 queue_delayed_work(dev->workqueue, &priv->work,
1173                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1174
1175                 if (unlikely(left == 32)) {
1176                         /*
1177                          * The tx_queue is now really full.
1178                          *
1179                          * TODO: check if the device has crashed and reset it.
1180                          */
1181                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1182                         return -ENOSPC;
1183                 }
1184         }
1185
1186         entry = priv->tx_queue.next;
1187         while (left--) {
1188                 u32 hole_size;
1189                 info = IEEE80211_SKB_CB(entry);
1190                 range = (void *)info->rate_driver_data;
1191                 hole_size = range->start_addr - last_addr;
1192                 if (!target_skb && hole_size >= len) {
1193                         target_skb = entry->prev;
1194                         hole_size -= len;
1195                         target_addr = last_addr;
1196                 }
1197                 largest_hole = max(largest_hole, hole_size);
1198                 last_addr = range->end_addr;
1199                 entry = entry->next;
1200         }
1201         if (!target_skb && priv->rx_end - last_addr >= len) {
1202                 target_skb = priv->tx_queue.prev;
1203                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1204                 if (!skb_queue_empty(&priv->tx_queue)) {
1205                         info = IEEE80211_SKB_CB(target_skb);
1206                         range = (void *)info->rate_driver_data;
1207                         target_addr = range->end_addr;
1208                 }
1209         } else
1210                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1211
1212         if (!target_skb) {
1213                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1214                 ieee80211_stop_queues(dev);
1215                 return -ENOSPC;
1216         }
1217
1218         info = IEEE80211_SKB_CB(skb);
1219         range = (void *)info->rate_driver_data;
1220         range->start_addr = target_addr;
1221         range->end_addr = target_addr + len;
1222         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1223         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1224
1225         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1226                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1227                 ieee80211_stop_queues(dev);
1228
1229         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1230         return 0;
1231 }
1232
1233 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1234                                      u16 payload_len, u16 type, gfp_t memflags)
1235 {
1236         struct p54_common *priv = dev->priv;
1237         struct p54_hdr *hdr;
1238         struct sk_buff *skb;
1239         size_t frame_len = sizeof(*hdr) + payload_len;
1240
1241         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1242                 return NULL;
1243
1244         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1245         if (!skb)
1246                 return NULL;
1247         skb_reserve(skb, priv->tx_hdr_len);
1248
1249         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1250         hdr->flags = cpu_to_le16(hdr_flags);
1251         hdr->len = cpu_to_le16(payload_len);
1252         hdr->type = cpu_to_le16(type);
1253         hdr->tries = hdr->rts_tries = 0;
1254
1255         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1256                 kfree_skb(skb);
1257                 return NULL;
1258         }
1259         return skb;
1260 }
1261
1262 int p54_read_eeprom(struct ieee80211_hw *dev)
1263 {
1264         struct p54_common *priv = dev->priv;
1265         struct p54_eeprom_lm86 *eeprom_hdr;
1266         struct sk_buff *skb;
1267         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1268         int ret = -ENOMEM;
1269         void *eeprom = NULL;
1270
1271         maxblocksize = EEPROM_READBACK_LEN;
1272         if (priv->fw_var >= 0x509)
1273                 maxblocksize -= 0xc;
1274         else
1275                 maxblocksize -= 0x4;
1276
1277         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1278                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1279                             GFP_KERNEL);
1280         if (!skb)
1281                 goto free;
1282         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1283         if (!priv->eeprom)
1284                 goto free;
1285         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1286         if (!eeprom)
1287                 goto free;
1288
1289         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1290                      sizeof(*eeprom_hdr) + maxblocksize);
1291
1292         while (eeprom_size) {
1293                 blocksize = min(eeprom_size, maxblocksize);
1294                 if (priv->fw_var < 0x509) {
1295                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1296                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1297                 } else {
1298                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1299                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1300                         eeprom_hdr->v2.magic2 = 0xf;
1301                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1302                 }
1303                 priv->tx(dev, skb);
1304
1305                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1306                         printk(KERN_ERR "%s: device does not respond!\n",
1307                                 wiphy_name(dev->wiphy));
1308                         ret = -EBUSY;
1309                         goto free;
1310                 }
1311
1312                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1313                 offset += blocksize;
1314                 eeprom_size -= blocksize;
1315         }
1316
1317         ret = p54_parse_eeprom(dev, eeprom, offset);
1318 free:
1319         kfree(priv->eeprom);
1320         priv->eeprom = NULL;
1321         p54_free_skb(dev, skb);
1322         kfree(eeprom);
1323
1324         return ret;
1325 }
1326 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1327
1328 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1329                 bool set)
1330 {
1331         struct p54_common *priv = dev->priv;
1332         struct sk_buff *skb;
1333         struct p54_tim *tim;
1334
1335         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1336                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1337         if (!skb)
1338                 return -ENOMEM;
1339
1340         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1341         tim->count = 1;
1342         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1343         priv->tx(dev, skb);
1344         return 0;
1345 }
1346
1347 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1348 {
1349         struct p54_common *priv = dev->priv;
1350         struct sk_buff *skb;
1351         struct p54_sta_unlock *sta;
1352
1353         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1354                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1355         if (!skb)
1356                 return -ENOMEM;
1357
1358         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1359         memcpy(sta->addr, addr, ETH_ALEN);
1360         priv->tx(dev, skb);
1361         return 0;
1362 }
1363
1364 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1365                               enum sta_notify_cmd notify_cmd,
1366                               struct ieee80211_sta *sta)
1367 {
1368         switch (notify_cmd) {
1369         case STA_NOTIFY_ADD:
1370         case STA_NOTIFY_REMOVE:
1371                 /*
1372                  * Notify the firmware that we don't want or we don't
1373                  * need to buffer frames for this station anymore.
1374                  */
1375
1376                 p54_sta_unlock(dev, sta->addr);
1377                 break;
1378         case STA_NOTIFY_AWAKE:
1379                 /* update the firmware's filter table */
1380                 p54_sta_unlock(dev, sta->addr);
1381                 break;
1382         default:
1383                 break;
1384         }
1385 }
1386
1387 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1388 {
1389         struct p54_common *priv = dev->priv;
1390         struct sk_buff *skb;
1391         struct p54_hdr *hdr;
1392         struct p54_txcancel *cancel;
1393
1394         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1395                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1396         if (!skb)
1397                 return -ENOMEM;
1398
1399         hdr = (void *)entry->data;
1400         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1401         cancel->req_id = hdr->req_id;
1402         priv->tx(dev, skb);
1403         return 0;
1404 }
1405
1406 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1407                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1408                 u16 *flags, u16 *aid)
1409 {
1410         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1411         struct p54_common *priv = dev->priv;
1412         int ret = 1;
1413
1414         switch (priv->mode) {
1415         case NL80211_IFTYPE_MONITOR:
1416                 /*
1417                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1418                  * every frame in promiscuous/monitor mode.
1419                  * see STSW45x0C LMAC API - page 12.
1420                  */
1421                 *aid = 0;
1422                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1423                 *queue += P54_QUEUE_DATA;
1424                 break;
1425         case NL80211_IFTYPE_STATION:
1426                 *aid = 1;
1427                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1428                         *queue = P54_QUEUE_MGMT;
1429                         ret = 0;
1430                 } else
1431                         *queue += P54_QUEUE_DATA;
1432                 break;
1433         case NL80211_IFTYPE_AP:
1434         case NL80211_IFTYPE_ADHOC:
1435         case NL80211_IFTYPE_MESH_POINT:
1436                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1437                         *aid = 0;
1438                         *queue = P54_QUEUE_CAB;
1439                         return 0;
1440                 }
1441
1442                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1443                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1444                                 *aid = 0;
1445                                 *queue = P54_QUEUE_MGMT;
1446                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1447                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1448                                 return 0;
1449                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1450                                 *aid = 0;
1451
1452                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1453                                         /*
1454                                          * Injecting beacons on top of a AP is
1455                                          * not a good idea... nevertheless,
1456                                          * it should be doable.
1457                                          */
1458
1459                                         *queue += P54_QUEUE_DATA;
1460                                         return 1;
1461                                 }
1462
1463                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1464                                 *queue = P54_QUEUE_BEACON;
1465                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1466                                 return 0;
1467                         } else {
1468                                 *queue = P54_QUEUE_MGMT;
1469                                 ret = 0;
1470                         }
1471                 } else
1472                         *queue += P54_QUEUE_DATA;
1473
1474                 if (info->control.sta)
1475                         *aid = info->control.sta->aid;
1476
1477                 if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
1478                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1479                 break;
1480         }
1481         return ret;
1482 }
1483
1484 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1485 {
1486         switch (alg) {
1487         case ALG_WEP:
1488                 return P54_CRYPTO_WEP;
1489         case ALG_TKIP:
1490                 return P54_CRYPTO_TKIPMICHAEL;
1491         case ALG_CCMP:
1492                 return P54_CRYPTO_AESCCMP;
1493         default:
1494                 return 0;
1495         }
1496 }
1497
1498 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1499 {
1500         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1501         struct ieee80211_tx_queue_stats *current_queue;
1502         struct p54_common *priv = dev->priv;
1503         struct p54_hdr *hdr;
1504         struct p54_tx_data *txhdr;
1505         size_t padding, len, tim_len = 0;
1506         int i, j, ridx, ret;
1507         u16 hdr_flags = 0, aid = 0;
1508         u8 rate, queue, crypt_offset = 0;
1509         u8 cts_rate = 0x20;
1510         u8 rc_flags;
1511         u8 calculated_tries[4];
1512         u8 nrates = 0, nremaining = 8;
1513
1514         queue = skb_get_queue_mapping(skb);
1515
1516         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1517         current_queue = &priv->tx_stats[queue];
1518         if (unlikely((current_queue->len > current_queue->limit) && ret))
1519                 return NETDEV_TX_BUSY;
1520         current_queue->len++;
1521         current_queue->count++;
1522         if ((current_queue->len == current_queue->limit) && ret)
1523                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1524
1525         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1526         len = skb->len;
1527
1528         if (info->control.hw_key) {
1529                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1530                 if (info->control.hw_key->alg == ALG_TKIP) {
1531                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1532                         /*
1533                          * The firmware excepts that the IV has to have
1534                          * this special format
1535                          */
1536                         iv[1] = iv[0];
1537                         iv[0] = iv[2];
1538                         iv[2] = 0;
1539                 }
1540         }
1541
1542         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1543         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1544
1545         if (padding)
1546                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1547         hdr->type = cpu_to_le16(aid);
1548         hdr->rts_tries = info->control.rates[0].count;
1549
1550         /*
1551          * we register the rates in perfect order, and
1552          * RTS/CTS won't happen on 5 GHz
1553          */
1554         cts_rate = info->control.rts_cts_rate_idx;
1555
1556         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1557
1558         /* see how many rates got used */
1559         for (i = 0; i < 4; i++) {
1560                 if (info->control.rates[i].idx < 0)
1561                         break;
1562                 nrates++;
1563         }
1564
1565         /* limit tries to 8/nrates per rate */
1566         for (i = 0; i < nrates; i++) {
1567                 /*
1568                  * The magic expression here is equivalent to 8/nrates for
1569                  * all values that matter, but avoids division and jumps.
1570                  * Note that nrates can only take the values 1 through 4.
1571                  */
1572                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1573                                                  info->control.rates[i].count);
1574                 nremaining -= calculated_tries[i];
1575         }
1576
1577         /* if there are tries left, distribute from back to front */
1578         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1579                 int tmp = info->control.rates[i].count - calculated_tries[i];
1580
1581                 if (tmp <= 0)
1582                         continue;
1583                 /* RC requested more tries at this rate */
1584
1585                 tmp = min_t(int, tmp, nremaining);
1586                 calculated_tries[i] += tmp;
1587                 nremaining -= tmp;
1588         }
1589
1590         ridx = 0;
1591         for (i = 0; i < nrates && ridx < 8; i++) {
1592                 /* we register the rates in perfect order */
1593                 rate = info->control.rates[i].idx;
1594                 if (info->band == IEEE80211_BAND_5GHZ)
1595                         rate += 4;
1596
1597                 /* store the count we actually calculated for TX status */
1598                 info->control.rates[i].count = calculated_tries[i];
1599
1600                 rc_flags = info->control.rates[i].flags;
1601                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1602                         rate |= 0x10;
1603                         cts_rate |= 0x10;
1604                 }
1605                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1606                         rate |= 0x40;
1607                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1608                         rate |= 0x20;
1609                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1610                         txhdr->rateset[ridx] = rate;
1611                         ridx++;
1612                 }
1613         }
1614
1615         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1616                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1617
1618         /* TODO: enable bursting */
1619         hdr->flags = cpu_to_le16(hdr_flags);
1620         hdr->tries = ridx;
1621         txhdr->rts_rate_idx = 0;
1622         if (info->control.hw_key) {
1623                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1624                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1625                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1626                 if (info->control.hw_key->alg == ALG_TKIP) {
1627                         if (unlikely(skb_tailroom(skb) < 12))
1628                                 goto err;
1629                         /* reserve space for the MIC key */
1630                         len += 8;
1631                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1632                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1633                 }
1634                 /* reserve some space for ICV */
1635                 len += info->control.hw_key->icv_len;
1636                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1637                        info->control.hw_key->icv_len);
1638         } else {
1639                 txhdr->key_type = 0;
1640                 txhdr->key_len = 0;
1641         }
1642         txhdr->crypt_offset = crypt_offset;
1643         txhdr->hw_queue = queue;
1644         txhdr->backlog = current_queue->len;
1645         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1646         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1647                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1648         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1649                 txhdr->longbow.cts_rate = cts_rate;
1650                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1651         } else {
1652                 txhdr->normal.output_power = priv->output_power;
1653                 txhdr->normal.cts_rate = cts_rate;
1654         }
1655         if (padding)
1656                 txhdr->align[0] = padding;
1657
1658         hdr->len = cpu_to_le16(len);
1659         /* modifies skb->cb and with it info, so must be last! */
1660         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1661                 goto err;
1662         priv->tx(dev, skb);
1663
1664         queue_delayed_work(dev->workqueue, &priv->work,
1665                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1666
1667         return NETDEV_TX_OK;
1668
1669  err:
1670         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1671         current_queue->len--;
1672         current_queue->count--;
1673         return NETDEV_TX_BUSY;
1674 }
1675
1676 static int p54_setup_mac(struct ieee80211_hw *dev)
1677 {
1678         struct p54_common *priv = dev->priv;
1679         struct sk_buff *skb;
1680         struct p54_setup_mac *setup;
1681         u16 mode;
1682
1683         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1684                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1685         if (!skb)
1686                 return -ENOMEM;
1687
1688         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1689         if (dev->conf.radio_enabled) {
1690                 switch (priv->mode) {
1691                 case NL80211_IFTYPE_STATION:
1692                         mode = P54_FILTER_TYPE_STATION;
1693                         break;
1694                 case NL80211_IFTYPE_AP:
1695                         mode = P54_FILTER_TYPE_AP;
1696                         break;
1697                 case NL80211_IFTYPE_ADHOC:
1698                 case NL80211_IFTYPE_MESH_POINT:
1699                         mode = P54_FILTER_TYPE_IBSS;
1700                         break;
1701                 case NL80211_IFTYPE_MONITOR:
1702                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1703                         break;
1704                 default:
1705                         mode = P54_FILTER_TYPE_HIBERNATE;
1706                         break;
1707                 }
1708
1709                 /*
1710                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1711                  * STSW45X0C LMAC API - page 12
1712                  */
1713                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1714                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1715                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1716                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1717         } else
1718                 mode = P54_FILTER_TYPE_HIBERNATE;
1719
1720         setup->mac_mode = cpu_to_le16(mode);
1721         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1722         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1723         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1724         setup->rx_align = 0;
1725         if (priv->fw_var < 0x500) {
1726                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1727                 memset(setup->v1.rts_rates, 0, 8);
1728                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1729                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1730                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1731                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1732                 setup->v1.unalloc0 = cpu_to_le16(0);
1733         } else {
1734                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1735                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1736                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1737                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1738                 setup->v2.truncate = cpu_to_le16(48896);
1739                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1740                 setup->v2.sbss_offset = 0;
1741                 setup->v2.mcast_window = 0;
1742                 setup->v2.rx_rssi_threshold = 0;
1743                 setup->v2.rx_ed_threshold = 0;
1744                 setup->v2.ref_clock = cpu_to_le32(644245094);
1745                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1746                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1747         }
1748         priv->tx(dev, skb);
1749         return 0;
1750 }
1751
1752 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1753 {
1754         struct p54_common *priv = dev->priv;
1755         struct sk_buff *skb;
1756         struct p54_hdr *hdr;
1757         struct p54_scan_head *head;
1758         struct p54_iq_autocal_entry *iq_autocal;
1759         union p54_scan_body_union *body;
1760         struct p54_scan_tail_rate *rate;
1761         struct pda_rssi_cal_entry *rssi;
1762         unsigned int i;
1763         void *entry;
1764         int band = dev->conf.channel->band;
1765         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1766
1767         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1768                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1769                             sizeof(*rate) + 2 * sizeof(*rssi),
1770                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1771         if (!skb)
1772                 return -ENOMEM;
1773
1774         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1775         memset(head->scan_params, 0, sizeof(head->scan_params));
1776         head->mode = cpu_to_le16(mode);
1777         head->dwell = cpu_to_le16(dwell);
1778         head->freq = freq;
1779
1780         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1781                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1782                 *pa_power_points = cpu_to_le16(0x0c);
1783         }
1784
1785         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1786         for (i = 0; i < priv->iq_autocal_len; i++) {
1787                 if (priv->iq_autocal[i].freq != freq)
1788                         continue;
1789
1790                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1791                        sizeof(struct p54_iq_autocal_entry));
1792                 break;
1793         }
1794         if (i == priv->iq_autocal_len)
1795                 goto err;
1796
1797         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1798                 body = (void *) skb_put(skb, sizeof(body->longbow));
1799         else
1800                 body = (void *) skb_put(skb, sizeof(body->normal));
1801
1802         for (i = 0; i < priv->output_limit->entries; i++) {
1803                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1804                                      priv->output_limit->entry_size * i);
1805
1806                 if (*entry_freq != freq)
1807                         continue;
1808
1809                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1810                         memcpy(&body->longbow.power_limits,
1811                                (void *) entry_freq + sizeof(__le16),
1812                                priv->output_limit->entry_size);
1813                 } else {
1814                         struct pda_channel_output_limit *limits =
1815                                (void *) entry_freq;
1816
1817                         body->normal.val_barker = 0x38;
1818                         body->normal.val_bpsk = body->normal.dup_bpsk =
1819                                 limits->val_bpsk;
1820                         body->normal.val_qpsk = body->normal.dup_qpsk =
1821                                 limits->val_qpsk;
1822                         body->normal.val_16qam = body->normal.dup_16qam =
1823                                 limits->val_16qam;
1824                         body->normal.val_64qam = body->normal.dup_64qam =
1825                                 limits->val_64qam;
1826                 }
1827                 break;
1828         }
1829         if (i == priv->output_limit->entries)
1830                 goto err;
1831
1832         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1833         for (i = 0; i < priv->curve_data->entries; i++) {
1834                 if (*((__le16 *)entry) != freq) {
1835                         entry += priv->curve_data->entry_size;
1836                         continue;
1837                 }
1838
1839                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1840                         memcpy(&body->longbow.curve_data,
1841                                 (void *) entry + sizeof(__le16),
1842                                 priv->curve_data->entry_size);
1843                 } else {
1844                         struct p54_scan_body *chan = &body->normal;
1845                         struct pda_pa_curve_data *curve_data =
1846                                 (void *) priv->curve_data->data;
1847
1848                         entry += sizeof(__le16);
1849                         chan->pa_points_per_curve = 8;
1850                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1851                         memcpy(chan->curve_data, entry,
1852                                sizeof(struct p54_pa_curve_data_sample) *
1853                                min((u8)8, curve_data->points_per_channel));
1854                 }
1855                 break;
1856         }
1857         if (i == priv->curve_data->entries)
1858                 goto err;
1859
1860         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1861                 rate = (void *) skb_put(skb, sizeof(*rate));
1862                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1863                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1864                         rate->rts_rates[i] = i;
1865         }
1866
1867         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1868         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1869         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1870         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1871                 /* Longbow frontend needs ever more */
1872                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1873                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1874                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1875         }
1876
1877         if (priv->fw_var >= 0x509) {
1878                 rate = (void *) skb_put(skb, sizeof(*rate));
1879                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1880                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1881                         rate->rts_rates[i] = i;
1882         }
1883
1884         hdr = (struct p54_hdr *) skb->data;
1885         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1886
1887         priv->tx(dev, skb);
1888         return 0;
1889
1890  err:
1891         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1892         p54_free_skb(dev, skb);
1893         return -EINVAL;
1894 }
1895
1896 static int p54_set_leds(struct ieee80211_hw *dev)
1897 {
1898         struct p54_common *priv = dev->priv;
1899         struct sk_buff *skb;
1900         struct p54_led *led;
1901
1902         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1903                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1904         if (!skb)
1905                 return -ENOMEM;
1906
1907         led = (struct p54_led *) skb_put(skb, sizeof(*led));
1908         led->flags = cpu_to_le16(0x0003);
1909         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1910         led->delay[0] = cpu_to_le16(1);
1911         led->delay[1] = cpu_to_le16(0);
1912         priv->tx(dev, skb);
1913         return 0;
1914 }
1915
1916 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1917 do {                                                            \
1918         queue.aifs = cpu_to_le16(ai_fs);                        \
1919         queue.cwmin = cpu_to_le16(cw_min);                      \
1920         queue.cwmax = cpu_to_le16(cw_max);                      \
1921         queue.txop = cpu_to_le16(_txop);                        \
1922 } while(0)
1923
1924 static int p54_set_edcf(struct ieee80211_hw *dev)
1925 {
1926         struct p54_common *priv = dev->priv;
1927         struct sk_buff *skb;
1928         struct p54_edcf *edcf;
1929
1930         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1931                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1932         if (!skb)
1933                 return -ENOMEM;
1934
1935         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1936         if (priv->use_short_slot) {
1937                 edcf->slottime = 9;
1938                 edcf->sifs = 0x10;
1939                 edcf->eofpad = 0x00;
1940         } else {
1941                 edcf->slottime = 20;
1942                 edcf->sifs = 0x0a;
1943                 edcf->eofpad = 0x06;
1944         }
1945         /* (see prism54/isl_oid.h for further details) */
1946         edcf->frameburst = cpu_to_le16(0);
1947         edcf->round_trip_delay = cpu_to_le16(0);
1948         edcf->flags = 0;
1949         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1950         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1951         priv->tx(dev, skb);
1952         return 0;
1953 }
1954
1955 static int p54_set_ps(struct ieee80211_hw *dev)
1956 {
1957         struct p54_common *priv = dev->priv;
1958         struct sk_buff *skb;
1959         struct p54_psm *psm;
1960         u16 mode;
1961         int i;
1962
1963         if (dev->conf.flags & IEEE80211_CONF_PS)
1964                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1965                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
1966         else
1967                 mode = P54_PSM_CAM;
1968
1969         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1970                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1971         if (!skb)
1972                 return -ENOMEM;
1973
1974         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1975         psm->mode = cpu_to_le16(mode);
1976         psm->aid = cpu_to_le16(priv->aid);
1977         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1978                 psm->intervals[i].interval =
1979                         cpu_to_le16(dev->conf.listen_interval);
1980                 psm->intervals[i].periods = cpu_to_le16(1);
1981         }
1982
1983         psm->beacon_rssi_skip_max = 200;
1984         psm->rssi_delta_threshold = 0;
1985         psm->nr = 10;
1986         psm->exclude[0] = 0;
1987
1988         priv->tx(dev, skb);
1989
1990         return 0;
1991 }
1992
1993 static int p54_beacon_tim(struct sk_buff *skb)
1994 {
1995         /*
1996          * the good excuse for this mess is ... the firmware.
1997          * The dummy TIM MUST be at the end of the beacon frame,
1998          * because it'll be overwritten!
1999          */
2000
2001         struct ieee80211_mgmt *mgmt = (void *)skb->data;
2002         u8 *pos, *end;
2003
2004         if (skb->len <= sizeof(mgmt))
2005                 return -EINVAL;
2006
2007         pos = (u8 *)mgmt->u.beacon.variable;
2008         end = skb->data + skb->len;
2009         while (pos < end) {
2010                 if (pos + 2 + pos[1] > end)
2011                         return -EINVAL;
2012
2013                 if (pos[0] == WLAN_EID_TIM) {
2014                         u8 dtim_len = pos[1];
2015                         u8 dtim_period = pos[3];
2016                         u8 *next = pos + 2 + dtim_len;
2017
2018                         if (dtim_len < 3)
2019                                 return -EINVAL;
2020
2021                         memmove(pos, next, end - next);
2022
2023                         if (dtim_len > 3)
2024                                 skb_trim(skb, skb->len - (dtim_len - 3));
2025
2026                         pos = end - (dtim_len + 2);
2027
2028                         /* add the dummy at the end */
2029                         pos[0] = WLAN_EID_TIM;
2030                         pos[1] = 3;
2031                         pos[2] = 0;
2032                         pos[3] = dtim_period;
2033                         pos[4] = 0;
2034                         return 0;
2035                 }
2036                 pos += 2 + pos[1];
2037         }
2038         return 0;
2039 }
2040
2041 static int p54_beacon_update(struct ieee80211_hw *dev,
2042                         struct ieee80211_vif *vif)
2043 {
2044         struct p54_common *priv = dev->priv;
2045         struct sk_buff *beacon;
2046         int ret;
2047
2048         if (priv->cached_beacon) {
2049                 p54_tx_cancel(dev, priv->cached_beacon);
2050                 /* wait for the last beacon the be freed */
2051                 msleep(10);
2052         }
2053
2054         beacon = ieee80211_beacon_get(dev, vif);
2055         if (!beacon)
2056                 return -ENOMEM;
2057         ret = p54_beacon_tim(beacon);
2058         if (ret)
2059                 return ret;
2060         ret = p54_tx(dev, beacon);
2061         if (ret)
2062                 return ret;
2063         priv->cached_beacon = beacon;
2064         priv->tsf_high32 = 0;
2065         priv->tsf_low32 = 0;
2066
2067         return 0;
2068 }
2069
2070 static int p54_start(struct ieee80211_hw *dev)
2071 {
2072         struct p54_common *priv = dev->priv;
2073         int err;
2074
2075         mutex_lock(&priv->conf_mutex);
2076         err = priv->open(dev);
2077         if (err)
2078                 goto out;
2079         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2080         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2081         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2082         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2083         err = p54_set_edcf(dev);
2084         if (err)
2085                 goto out;
2086
2087         memset(priv->bssid, ~0, ETH_ALEN);
2088         priv->mode = NL80211_IFTYPE_MONITOR;
2089         err = p54_setup_mac(dev);
2090         if (err) {
2091                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2092                 goto out;
2093         }
2094
2095         queue_delayed_work(dev->workqueue, &priv->work, 0);
2096
2097         priv->softled_state = 0;
2098         err = p54_set_leds(dev);
2099
2100 out:
2101         mutex_unlock(&priv->conf_mutex);
2102         return err;
2103 }
2104
2105 static void p54_stop(struct ieee80211_hw *dev)
2106 {
2107         struct p54_common *priv = dev->priv;
2108         struct sk_buff *skb;
2109
2110         mutex_lock(&priv->conf_mutex);
2111         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2112         priv->softled_state = 0;
2113         p54_set_leds(dev);
2114
2115 #ifdef CONFIG_P54_LEDS
2116         cancel_delayed_work_sync(&priv->led_work);
2117 #endif /* CONFIG_P54_LEDS */
2118         cancel_delayed_work_sync(&priv->work);
2119         if (priv->cached_beacon)
2120                 p54_tx_cancel(dev, priv->cached_beacon);
2121
2122         priv->stop(dev);
2123         while ((skb = skb_dequeue(&priv->tx_queue)))
2124                 kfree_skb(skb);
2125         priv->cached_beacon = NULL;
2126         priv->tsf_high32 = priv->tsf_low32 = 0;
2127         mutex_unlock(&priv->conf_mutex);
2128 }
2129
2130 static int p54_add_interface(struct ieee80211_hw *dev,
2131                              struct ieee80211_if_init_conf *conf)
2132 {
2133         struct p54_common *priv = dev->priv;
2134
2135         mutex_lock(&priv->conf_mutex);
2136         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2137                 mutex_unlock(&priv->conf_mutex);
2138                 return -EOPNOTSUPP;
2139         }
2140
2141         priv->vif = conf->vif;
2142
2143         switch (conf->type) {
2144         case NL80211_IFTYPE_STATION:
2145         case NL80211_IFTYPE_ADHOC:
2146         case NL80211_IFTYPE_AP:
2147         case NL80211_IFTYPE_MESH_POINT:
2148                 priv->mode = conf->type;
2149                 break;
2150         default:
2151                 mutex_unlock(&priv->conf_mutex);
2152                 return -EOPNOTSUPP;
2153         }
2154
2155         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2156         p54_setup_mac(dev);
2157         mutex_unlock(&priv->conf_mutex);
2158         return 0;
2159 }
2160
2161 static void p54_remove_interface(struct ieee80211_hw *dev,
2162                                  struct ieee80211_if_init_conf *conf)
2163 {
2164         struct p54_common *priv = dev->priv;
2165
2166         mutex_lock(&priv->conf_mutex);
2167         priv->vif = NULL;
2168         if (priv->cached_beacon)
2169                 p54_tx_cancel(dev, priv->cached_beacon);
2170         priv->mode = NL80211_IFTYPE_MONITOR;
2171         memset(priv->mac_addr, 0, ETH_ALEN);
2172         memset(priv->bssid, 0, ETH_ALEN);
2173         p54_setup_mac(dev);
2174         mutex_unlock(&priv->conf_mutex);
2175 }
2176
2177 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2178 {
2179         int ret = 0;
2180         struct p54_common *priv = dev->priv;
2181         struct ieee80211_conf *conf = &dev->conf;
2182
2183         mutex_lock(&priv->conf_mutex);
2184         if (changed & IEEE80211_CONF_CHANGE_POWER)
2185                 priv->output_power = conf->power_level << 2;
2186         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2187                 ret = p54_setup_mac(dev);
2188                 if (ret)
2189                         goto out;
2190         }
2191         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2192                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2193                 if (ret)
2194                         goto out;
2195         }
2196         if (changed & IEEE80211_CONF_CHANGE_PS) {
2197                 ret = p54_set_ps(dev);
2198                 if (ret)
2199                         goto out;
2200         }
2201
2202 out:
2203         mutex_unlock(&priv->conf_mutex);
2204         return ret;
2205 }
2206
2207 static void p54_configure_filter(struct ieee80211_hw *dev,
2208                                  unsigned int changed_flags,
2209                                  unsigned int *total_flags,
2210                                  int mc_count, struct dev_mc_list *mclist)
2211 {
2212         struct p54_common *priv = dev->priv;
2213
2214         *total_flags &= FIF_PROMISC_IN_BSS |
2215                         FIF_OTHER_BSS;
2216
2217         priv->filter_flags = *total_flags;
2218
2219         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2220                 p54_setup_mac(dev);
2221 }
2222
2223 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2224                        const struct ieee80211_tx_queue_params *params)
2225 {
2226         struct p54_common *priv = dev->priv;
2227         int ret;
2228
2229         mutex_lock(&priv->conf_mutex);
2230         if ((params) && !(queue > 4)) {
2231                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2232                         params->cw_min, params->cw_max, params->txop);
2233                 ret = p54_set_edcf(dev);
2234         } else
2235                 ret = -EINVAL;
2236         mutex_unlock(&priv->conf_mutex);
2237         return ret;
2238 }
2239
2240 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2241 {
2242         struct p54_common *priv = dev->priv;
2243         struct sk_buff *skb;
2244         struct p54_xbow_synth *xbow;
2245
2246         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2247                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2248         if (!skb)
2249                 return -ENOMEM;
2250
2251         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2252         xbow->magic1 = cpu_to_le16(0x1);
2253         xbow->magic2 = cpu_to_le16(0x2);
2254         xbow->freq = cpu_to_le16(5390);
2255         memset(xbow->padding, 0, sizeof(xbow->padding));
2256         priv->tx(dev, skb);
2257         return 0;
2258 }
2259
2260 static void p54_work(struct work_struct *work)
2261 {
2262         struct p54_common *priv = container_of(work, struct p54_common,
2263                                                work.work);
2264         struct ieee80211_hw *dev = priv->hw;
2265         struct sk_buff *skb;
2266
2267         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2268                 return ;
2269
2270         /*
2271          * TODO: walk through tx_queue and do the following tasks
2272          *      1. initiate bursts.
2273          *      2. cancel stuck frames / reset the device if necessary.
2274          */
2275
2276         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2277                             sizeof(struct p54_statistics),
2278                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2279         if (!skb)
2280                 return ;
2281
2282         priv->tx(dev, skb);
2283 }
2284
2285 static int p54_get_stats(struct ieee80211_hw *dev,
2286                          struct ieee80211_low_level_stats *stats)
2287 {
2288         struct p54_common *priv = dev->priv;
2289
2290         memcpy(stats, &priv->stats, sizeof(*stats));
2291         return 0;
2292 }
2293
2294 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2295                             struct ieee80211_tx_queue_stats *stats)
2296 {
2297         struct p54_common *priv = dev->priv;
2298
2299         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2300                sizeof(stats[0]) * dev->queues);
2301         return 0;
2302 }
2303
2304 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2305                                  struct ieee80211_vif *vif,
2306                                  struct ieee80211_bss_conf *info,
2307                                  u32 changed)
2308 {
2309         struct p54_common *priv = dev->priv;
2310         int ret;
2311
2312         mutex_lock(&priv->conf_mutex);
2313         if (changed & BSS_CHANGED_BSSID) {
2314                 memcpy(priv->bssid, info->bssid, ETH_ALEN);
2315                 ret = p54_setup_mac(dev);
2316                 if (ret)
2317                         goto out;
2318         }
2319
2320         if (changed & BSS_CHANGED_BEACON) {
2321                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2322                 if (ret)
2323                         goto out;
2324                 ret = p54_setup_mac(dev);
2325                 if (ret)
2326                         goto out;
2327                 ret = p54_beacon_update(dev, vif);
2328                 if (ret)
2329                         goto out;
2330         }
2331         /* XXX: this mimics having two callbacks... clean up */
2332  out:
2333         mutex_unlock(&priv->conf_mutex);
2334
2335         if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) {
2336                 priv->use_short_slot = info->use_short_slot;
2337                 p54_set_edcf(dev);
2338         }
2339         if (changed & BSS_CHANGED_BASIC_RATES) {
2340                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2341                         priv->basic_rate_mask = (info->basic_rates << 4);
2342                 else
2343                         priv->basic_rate_mask = info->basic_rates;
2344                 p54_setup_mac(dev);
2345                 if (priv->fw_var >= 0x500)
2346                         p54_scan(dev, P54_SCAN_EXIT, 0);
2347         }
2348         if (changed & BSS_CHANGED_ASSOC) {
2349                 if (info->assoc) {
2350                         priv->aid = info->aid;
2351                         priv->wakeup_timer = info->beacon_int *
2352                                              info->dtim_period * 5;
2353                         p54_setup_mac(dev);
2354                 }
2355         }
2356 }
2357
2358 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2359                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2360                        struct ieee80211_key_conf *key)
2361 {
2362         struct p54_common *priv = dev->priv;
2363         struct sk_buff *skb;
2364         struct p54_keycache *rxkey;
2365         int slot, ret = 0;
2366         u8 algo = 0;
2367
2368         if (modparam_nohwcrypt)
2369                 return -EOPNOTSUPP;
2370
2371         mutex_lock(&priv->conf_mutex);
2372         if (cmd == SET_KEY) {
2373                 switch (key->alg) {
2374                 case ALG_TKIP:
2375                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2376                               BR_DESC_PRIV_CAP_TKIP))) {
2377                                 ret = -EOPNOTSUPP;
2378                                 goto out_unlock;
2379                         }
2380                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2381                         algo = P54_CRYPTO_TKIPMICHAEL;
2382                         break;
2383                 case ALG_WEP:
2384                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) {
2385                                 ret = -EOPNOTSUPP;
2386                                 goto out_unlock;
2387                         }
2388                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2389                         algo = P54_CRYPTO_WEP;
2390                         break;
2391                 case ALG_CCMP:
2392                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) {
2393                                 ret = -EOPNOTSUPP;
2394                                 goto out_unlock;
2395                         }
2396                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2397                         algo = P54_CRYPTO_AESCCMP;
2398                         break;
2399                 default:
2400                         ret = -EOPNOTSUPP;
2401                         goto out_unlock;
2402                 }
2403                 slot = bitmap_find_free_region(priv->used_rxkeys,
2404                                                priv->rx_keycache_size, 0);
2405
2406                 if (slot < 0) {
2407                         /*
2408                          * The device supports the choosen algorithm, but the
2409                          * firmware does not provide enough key slots to store
2410                          * all of them.
2411                          * But encryption offload for outgoing frames is always
2412                          * possible, so we just pretend that the upload was
2413                          * successful and do the decryption in software.
2414                          */
2415
2416                         /* mark the key as invalid. */
2417                         key->hw_key_idx = 0xff;
2418                         goto out_unlock;
2419                 }
2420         } else {
2421                 slot = key->hw_key_idx;
2422
2423                 if (slot == 0xff) {
2424                         /* This key was not uploaded into the rx key cache. */
2425
2426                         goto out_unlock;
2427                 }
2428
2429                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2430                 algo = 0;
2431         }
2432
2433         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2434                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
2435         if (!skb) {
2436                 bitmap_release_region(priv->used_rxkeys, slot, 0);
2437                 ret = -ENOSPC;
2438                 goto out_unlock;
2439         }
2440
2441         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2442         rxkey->entry = slot;
2443         rxkey->key_id = key->keyidx;
2444         rxkey->key_type = algo;
2445         if (sta)
2446                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2447         else
2448                 memset(rxkey->mac, ~0, ETH_ALEN);
2449         if (key->alg != ALG_TKIP) {
2450                 rxkey->key_len = min((u8)16, key->keylen);
2451                 memcpy(rxkey->key, key->key, rxkey->key_len);
2452         } else {
2453                 rxkey->key_len = 24;
2454                 memcpy(rxkey->key, key->key, 16);
2455                 memcpy(&(rxkey->key[16]), &(key->key
2456                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2457         }
2458
2459         priv->tx(dev, skb);
2460         key->hw_key_idx = slot;
2461
2462 out_unlock:
2463         mutex_unlock(&priv->conf_mutex);
2464         return ret;
2465 }
2466
2467 #ifdef CONFIG_P54_LEDS
2468 static void p54_update_leds(struct work_struct *work)
2469 {
2470         struct p54_common *priv = container_of(work, struct p54_common,
2471                                                led_work.work);
2472         int err, i, tmp, blink_delay = 400;
2473         bool rerun = false;
2474
2475         /* Don't toggle the LED, when the device is down. */
2476         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2477                 return ;
2478
2479         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2480                 if (priv->leds[i].toggled) {
2481                         priv->softled_state |= BIT(i);
2482
2483                         tmp = 70 + 200 / (priv->leds[i].toggled);
2484                         if (tmp < blink_delay)
2485                                 blink_delay = tmp;
2486
2487                         if (priv->leds[i].led_dev.brightness == LED_OFF)
2488                                 rerun = true;
2489
2490                         priv->leds[i].toggled =
2491                                 !!priv->leds[i].led_dev.brightness;
2492                 } else
2493                         priv->softled_state &= ~BIT(i);
2494
2495         err = p54_set_leds(priv->hw);
2496         if (err && net_ratelimit())
2497                 printk(KERN_ERR "%s: failed to update LEDs.\n",
2498                         wiphy_name(priv->hw->wiphy));
2499
2500         if (rerun)
2501                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2502                         msecs_to_jiffies(blink_delay));
2503 }
2504
2505 static void p54_led_brightness_set(struct led_classdev *led_dev,
2506                                    enum led_brightness brightness)
2507 {
2508         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2509                                                led_dev);
2510         struct ieee80211_hw *dev = led->hw_dev;
2511         struct p54_common *priv = dev->priv;
2512
2513         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2514                 return ;
2515
2516         if (brightness) {
2517                 led->toggled++;
2518                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2519                                    HZ/10);
2520         }
2521 }
2522
2523 static int p54_register_led(struct ieee80211_hw *dev,
2524                             unsigned int led_index,
2525                             char *name, char *trigger)
2526 {
2527         struct p54_common *priv = dev->priv;
2528         struct p54_led_dev *led = &priv->leds[led_index];
2529         int err;
2530
2531         if (led->registered)
2532                 return -EEXIST;
2533
2534         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2535                  wiphy_name(dev->wiphy), name);
2536         led->hw_dev = dev;
2537         led->index = led_index;
2538         led->led_dev.name = led->name;
2539         led->led_dev.default_trigger = trigger;
2540         led->led_dev.brightness_set = p54_led_brightness_set;
2541
2542         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2543         if (err)
2544                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2545                         wiphy_name(dev->wiphy), name);
2546         else
2547                 led->registered = 1;
2548
2549         return err;
2550 }
2551
2552 static int p54_init_leds(struct ieee80211_hw *dev)
2553 {
2554         struct p54_common *priv = dev->priv;
2555         int err;
2556
2557         /*
2558          * TODO:
2559          * Figure out if the EEPROM contains some hints about the number
2560          * of available/programmable LEDs of the device.
2561          */
2562
2563         INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2564
2565         err = p54_register_led(dev, 0, "assoc",
2566                                ieee80211_get_assoc_led_name(dev));
2567         if (err)
2568                 return err;
2569
2570         err = p54_register_led(dev, 1, "tx",
2571                                ieee80211_get_tx_led_name(dev));
2572         if (err)
2573                 return err;
2574
2575         err = p54_register_led(dev, 2, "rx",
2576                                ieee80211_get_rx_led_name(dev));
2577         if (err)
2578                 return err;
2579
2580         err = p54_register_led(dev, 3, "radio",
2581                                ieee80211_get_radio_led_name(dev));
2582         if (err)
2583                 return err;
2584
2585         err = p54_set_leds(dev);
2586         return err;
2587 }
2588
2589 static void p54_unregister_leds(struct ieee80211_hw *dev)
2590 {
2591         struct p54_common *priv = dev->priv;
2592         int i;
2593
2594         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2595                 if (priv->leds[i].registered)
2596                         led_classdev_unregister(&priv->leds[i].led_dev);
2597 }
2598 #endif /* CONFIG_P54_LEDS */
2599
2600 static const struct ieee80211_ops p54_ops = {
2601         .tx                     = p54_tx,
2602         .start                  = p54_start,
2603         .stop                   = p54_stop,
2604         .add_interface          = p54_add_interface,
2605         .remove_interface       = p54_remove_interface,
2606         .set_tim                = p54_set_tim,
2607         .sta_notify             = p54_sta_notify,
2608         .set_key                = p54_set_key,
2609         .config                 = p54_config,
2610         .bss_info_changed       = p54_bss_info_changed,
2611         .configure_filter       = p54_configure_filter,
2612         .conf_tx                = p54_conf_tx,
2613         .get_stats              = p54_get_stats,
2614         .get_tx_stats           = p54_get_tx_stats
2615 };
2616
2617 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2618 {
2619         struct ieee80211_hw *dev;
2620         struct p54_common *priv;
2621
2622         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2623         if (!dev)
2624                 return NULL;
2625
2626         priv = dev->priv;
2627         priv->hw = dev;
2628         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2629         priv->basic_rate_mask = 0x15f;
2630         skb_queue_head_init(&priv->tx_queue);
2631         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2632                      IEEE80211_HW_SIGNAL_DBM |
2633                      IEEE80211_HW_NOISE_DBM;
2634
2635         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2636                                       BIT(NL80211_IFTYPE_ADHOC) |
2637                                       BIT(NL80211_IFTYPE_AP) |
2638                                       BIT(NL80211_IFTYPE_MESH_POINT);
2639
2640         dev->channel_change_time = 1000;        /* TODO: find actual value */
2641         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2642         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2643         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2644         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2645         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2646         dev->queues = 1;
2647         priv->noise = -94;
2648         /*
2649          * We support at most 8 tries no matter which rate they're at,
2650          * we cannot support max_rates * max_rate_tries as we set it
2651          * here, but setting it correctly to 4/2 or so would limit us
2652          * artificially if the RC algorithm wants just two rates, so
2653          * let's say 4/7, we'll redistribute it at TX time, see the
2654          * comments there.
2655          */
2656         dev->max_rates = 4;
2657         dev->max_rate_tries = 7;
2658         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2659                                  sizeof(struct p54_tx_data);
2660
2661         mutex_init(&priv->conf_mutex);
2662         init_completion(&priv->eeprom_comp);
2663         INIT_DELAYED_WORK(&priv->work, p54_work);
2664
2665         return dev;
2666 }
2667 EXPORT_SYMBOL_GPL(p54_init_common);
2668
2669 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2670 {
2671         int err;
2672
2673         err = ieee80211_register_hw(dev);
2674         if (err) {
2675                 dev_err(pdev, "Cannot register device (%d).\n", err);
2676                 return err;
2677         }
2678
2679 #ifdef CONFIG_P54_LEDS
2680         err = p54_init_leds(dev);
2681         if (err)
2682                 return err;
2683 #endif /* CONFIG_P54_LEDS */
2684
2685         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2686         return 0;
2687 }
2688 EXPORT_SYMBOL_GPL(p54_register_common);
2689
2690 void p54_free_common(struct ieee80211_hw *dev)
2691 {
2692         struct p54_common *priv = dev->priv;
2693         kfree(priv->iq_autocal);
2694         kfree(priv->output_limit);
2695         kfree(priv->curve_data);
2696         kfree(priv->used_rxkeys);
2697
2698 #ifdef CONFIG_P54_LEDS
2699         p54_unregister_leds(dev);
2700 #endif /* CONFIG_P54_LEDS */
2701 }
2702 EXPORT_SYMBOL_GPL(p54_free_common);