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
  25 #include "p54.h"
  26 #include "p54common.h"
  27
  28 static int modparam_nohwcrypt;
  29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  32 MODULE_DESCRIPTION("Softmac Prism54 common code");
  33 MODULE_LICENSE("GPL");
  34 MODULE_ALIAS("prism54common");
  35
  36 static struct ieee80211_rate p54_bgrates[] = {
  37         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  38         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  39         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  40         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 60, .hw_value = 4, },
  42         { .bitrate = 90, .hw_value = 5, },
  43         { .bitrate = 120, .hw_value = 6, },
  44         { .bitrate = 180, .hw_value = 7, },
  45         { .bitrate = 240, .hw_value = 8, },
  46         { .bitrate = 360, .hw_value = 9, },
  47         { .bitrate = 480, .hw_value = 10, },
  48         { .bitrate = 540, .hw_value = 11, },
  49 };
  50
  51 static struct ieee80211_channel p54_bgchannels[] = {
  52         { .center_freq = 2412, .hw_value = 1, },
  53         { .center_freq = 2417, .hw_value = 2, },
  54         { .center_freq = 2422, .hw_value = 3, },
  55         { .center_freq = 2427, .hw_value = 4, },
  56         { .center_freq = 2432, .hw_value = 5, },
  57         { .center_freq = 2437, .hw_value = 6, },
  58         { .center_freq = 2442, .hw_value = 7, },
  59         { .center_freq = 2447, .hw_value = 8, },
  60         { .center_freq = 2452, .hw_value = 9, },
  61         { .center_freq = 2457, .hw_value = 10, },
  62         { .center_freq = 2462, .hw_value = 11, },
  63         { .center_freq = 2467, .hw_value = 12, },
  64         { .center_freq = 2472, .hw_value = 13, },
  65         { .center_freq = 2484, .hw_value = 14, },
  66 };
  67
  68 static struct ieee80211_supported_band band_2GHz = {
  69         .channels = p54_bgchannels,
  70         .n_channels = ARRAY_SIZE(p54_bgchannels),
  71         .bitrates = p54_bgrates,
  72         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  73 };
  74
  75 static struct ieee80211_rate p54_arates[] = {
  76         { .bitrate = 60, .hw_value = 4, },
  77         { .bitrate = 90, .hw_value = 5, },
  78         { .bitrate = 120, .hw_value = 6, },
  79         { .bitrate = 180, .hw_value = 7, },
  80         { .bitrate = 240, .hw_value = 8, },
  81         { .bitrate = 360, .hw_value = 9, },
  82         { .bitrate = 480, .hw_value = 10, },
  83         { .bitrate = 540, .hw_value = 11, },
  84 };
  85
  86 static struct ieee80211_channel p54_achannels[] = {
  87         { .center_freq = 4920 },
  88         { .center_freq = 4940 },
  89         { .center_freq = 4960 },
  90         { .center_freq = 4980 },
  91         { .center_freq = 5040 },
  92         { .center_freq = 5060 },
  93         { .center_freq = 5080 },
  94         { .center_freq = 5170 },
  95         { .center_freq = 5180 },
  96         { .center_freq = 5190 },
  97         { .center_freq = 5200 },
  98         { .center_freq = 5210 },
  99         { .center_freq = 5220 },
 100         { .center_freq = 5230 },
 101         { .center_freq = 5240 },
 102         { .center_freq = 5260 },
 103         { .center_freq = 5280 },
 104         { .center_freq = 5300 },
 105         { .center_freq = 5320 },
 106         { .center_freq = 5500 },
 107         { .center_freq = 5520 },
 108         { .center_freq = 5540 },
 109         { .center_freq = 5560 },
 110         { .center_freq = 5580 },
 111         { .center_freq = 5600 },
 112         { .center_freq = 5620 },
 113         { .center_freq = 5640 },
 114         { .center_freq = 5660 },
 115         { .center_freq = 5680 },
 116         { .center_freq = 5700 },
 117         { .center_freq = 5745 },
 118         { .center_freq = 5765 },
 119         { .center_freq = 5785 },
 120         { .center_freq = 5805 },
 121         { .center_freq = 5825 },
 122 };
 123
 124 static struct ieee80211_supported_band band_5GHz = {
 125         .channels = p54_achannels,
 126         .n_channels = ARRAY_SIZE(p54_achannels),
 127         .bitrates = p54_arates,
 128         .n_bitrates = ARRAY_SIZE(p54_arates),
 129 };
 130
 131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 132 {
 133         struct p54_common *priv = dev->priv;
 134         struct bootrec_exp_if *exp_if;
 135         struct bootrec *bootrec;
 136         u32 *data = (u32 *)fw->data;
 137         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 138         u8 *fw_version = NULL;
 139         size_t len;
 140         int i;
 141         int maxlen;
 142
 143         if (priv->rx_start)
 144                 return 0;
 145
 146         while (data < end_data && *data)
 147                 data++;
 148
 149         while (data < end_data && !*data)
 150                 data++;
 151
 152         bootrec = (struct bootrec *) data;
 153
 154         while (bootrec->data <= end_data &&
 155                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 156                 u32 code = le32_to_cpu(bootrec->code);
 157                 switch (code) {
 158                 case BR_CODE_COMPONENT_ID:
 159                         priv->fw_interface = be32_to_cpup((__be32 *)
 160                                              bootrec->data);
 161                         switch (priv->fw_interface) {
 162                         case FW_LM86:
 163                         case FW_LM20:
 164                         case FW_LM87: {
 165                                 char *iftype = (char *)bootrec->data;
 166                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 167                                                  "firmware\n",
 168                                         wiphy_name(dev->wiphy),
 169                                         iftype[2], iftype[3]);
 170                                 break;
 171                                 }
 172                         case FW_FMAC:
 173                         default:
 174                                 printk(KERN_ERR "%s: unsupported firmware\n",
 175                                         wiphy_name(dev->wiphy));
 176                                 return -ENODEV;
 177                         }
 178                         break;
 179                 case BR_CODE_COMPONENT_VERSION:
 180                         /* 24 bytes should be enough for all firmwares */
 181                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 182                                 fw_version = (unsigned char*)bootrec->data;
 183                         break;
 184                 case BR_CODE_DESCR: {
 185                         struct bootrec_desc *desc =
 186                                 (struct bootrec_desc *)bootrec->data;
 187                         priv->rx_start = le32_to_cpu(desc->rx_start);
 188                         /* FIXME add sanity checking */
 189                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 190                         priv->headroom = desc->headroom;
 191                         priv->tailroom = desc->tailroom;
 192                         priv->privacy_caps = desc->privacy_caps;
 193                         priv->rx_keycache_size = desc->rx_keycache_size;
 194                         if (le32_to_cpu(bootrec->len) == 11)
 195                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 196                         else
 197                                 priv->rx_mtu = (size_t)
 198                                         0x620 - priv->tx_hdr_len;
 199                         maxlen = priv->tx_hdr_len + /* USB devices */
 200                                  sizeof(struct p54_rx_data) +
 201                                  4 + /* rx alignment */
 202                                  IEEE80211_MAX_FRAG_THRESHOLD;
 203                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 204                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 205                                                  "to %d\n", priv->rx_mtu,
 206                                                  maxlen);
 207                                 priv->rx_mtu = maxlen;
 208                         }
 209                         break;
 210                         }
 211                 case BR_CODE_EXPOSED_IF:
 212                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 213                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 214                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 215                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 216                         break;
 217                 case BR_CODE_DEPENDENT_IF:
 218                         break;
 219                 case BR_CODE_END_OF_BRA:
 220                 case LEGACY_BR_CODE_END_OF_BRA:
 221                         end_data = NULL;
 222                         break;
 223                 default:
 224                         break;
 225                 }
 226                 bootrec = (struct bootrec *)&bootrec->data[len];
 227         }
 228
 229         if (fw_version)
 230                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 231                         wiphy_name(dev->wiphy), fw_version,
 232                         priv->fw_var >> 8, priv->fw_var & 0xff);
 233
 234         if (priv->fw_var < 0x500)
 235                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 236                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 237                        "and grab one for \"kernel >= 2.6.28\"!\n",
 238                         wiphy_name(dev->wiphy));
 239
 240         if (priv->fw_var >= 0x300) {
 241                 /* Firmware supports QoS, use it! */
 242                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 243                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 244                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 245                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 246                 dev->queues = P54_QUEUE_AC_NUM;
 247         }
 248
 249         if (!modparam_nohwcrypt)
 250                 printk(KERN_INFO "%s: cryptographic accelerator "
 251                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 252                         wiphy_name(dev->wiphy),
 253                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 254                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 255                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 257                         "YES" : "no");
 258
 259         return 0;
 260 }
 261 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 262
 263 static int p54_convert_rev0(struct ieee80211_hw *dev,
 264                             struct pda_pa_curve_data *curve_data)
 265 {
 266         struct p54_common *priv = dev->priv;
 267         struct p54_pa_curve_data_sample *dst;
 268         struct pda_pa_curve_data_sample_rev0 *src;
 269         size_t cd_len = sizeof(*curve_data) +
 270                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 271                  curve_data->channels;
 272         unsigned int i, j;
 273         void *source, *target;
 274
 275         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 276                                    GFP_KERNEL);
 277         if (!priv->curve_data)
 278                 return -ENOMEM;
 279
 280         priv->curve_data->entries = curve_data->channels;
 281         priv->curve_data->entry_size = sizeof(__le16) +
 282                 sizeof(*dst) * curve_data->points_per_channel;
 283         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 284         priv->curve_data->len = cd_len;
 285         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 286         source = curve_data->data;
 287         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 288         for (i = 0; i < curve_data->channels; i++) {
 289                 __le16 *freq = source;
 290                 source += sizeof(__le16);
 291                 *((__le16 *)target) = *freq;
 292                 target += sizeof(__le16);
 293                 for (j = 0; j < curve_data->points_per_channel; j++) {
 294                         dst = target;
 295                         src = source;
 296
 297                         dst->rf_power = src->rf_power;
 298                         dst->pa_detector = src->pa_detector;
 299                         dst->data_64qam = src->pcv;
 300                         /* "invent" the points for the other modulations */
 301 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 302                         dst->data_16qam = SUB(src->pcv, 12);
 303                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 304                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 305                         dst->data_barker = SUB(dst->data_bpsk, 14);
 306 #undef SUB
 307                         target += sizeof(*dst);
 308                         source += sizeof(*src);
 309                 }
 310         }
 311
 312         return 0;
 313 }
 314
 315 static int p54_convert_rev1(struct ieee80211_hw *dev,
 316                             struct pda_pa_curve_data *curve_data)
 317 {
 318         struct p54_common *priv = dev->priv;
 319         struct p54_pa_curve_data_sample *dst;
 320         struct pda_pa_curve_data_sample_rev1 *src;
 321         size_t cd_len = sizeof(*curve_data) +
 322                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 323                  curve_data->channels;
 324         unsigned int i, j;
 325         void *source, *target;
 326
 327         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 328                                    GFP_KERNEL);
 329         if (!priv->curve_data)
 330                 return -ENOMEM;
 331
 332         priv->curve_data->entries = curve_data->channels;
 333         priv->curve_data->entry_size = sizeof(__le16) +
 334                 sizeof(*dst) * curve_data->points_per_channel;
 335         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 336         priv->curve_data->len = cd_len;
 337         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 338         source = curve_data->data;
 339         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 340         for (i = 0; i < curve_data->channels; i++) {
 341                 __le16 *freq = source;
 342                 source += sizeof(__le16);
 343                 *((__le16 *)target) = *freq;
 344                 target += sizeof(__le16);
 345                 for (j = 0; j < curve_data->points_per_channel; j++) {
 346                         memcpy(target, source, sizeof(*src));
 347
 348                         target += sizeof(*dst);
 349                         source += sizeof(*src);
 350                 }
 351                 source++;
 352         }
 353
 354         return 0;
 355 }
 356
 357 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 358                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 359 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 360
 361 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 362                              u16 type)
 363 {
 364         struct p54_common *priv = dev->priv;
 365         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 366         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 367         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 368         int i;
 369
 370         if (len != (entry_size * num_entries)) {
 371                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 372                                  " type:(%x) len:%d.\n",
 373                        wiphy_name(dev->wiphy), type, len);
 374
 375                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 376                                      data, len);
 377
 378                 printk(KERN_ERR "%s: please report this issue.\n",
 379                         wiphy_name(dev->wiphy));
 380                 return;
 381         }
 382
 383         for (i = 0; i < num_entries; i++) {
 384                 struct pda_rssi_cal_entry *cal = data +
 385                                                  (offset + i * entry_size);
 386                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 387                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 388         }
 389 }
 390
 391 static void p54_parse_default_country(struct ieee80211_hw *dev,
 392                                       void *data, int len)
 393 {
 394         struct pda_country *country;
 395
 396         if (len != sizeof(*country)) {
 397                 printk(KERN_ERR "%s: found possible invalid default country "
 398                                 "eeprom entry. (entry size: %d)\n",
 399                        wiphy_name(dev->wiphy), len);
 400
 401                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 402                                      data, len);
 403
 404                 printk(KERN_ERR "%s: please report this issue.\n",
 405                         wiphy_name(dev->wiphy));
 406                 return;
 407         }
 408
 409         country = (struct pda_country *) data;
 410         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 411                 regulatory_hint(dev->wiphy, country->alpha2);
 412         else {
 413                 /* TODO:
 414                  * write a shared/common function that converts
 415                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 416                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 417                  */
 418         }
 419 }
 420
 421 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 422                                      u8 *data, size_t len)
 423 {
 424         struct p54_common *priv = dev->priv;
 425
 426         if (len < 2)
 427                 return -EINVAL;
 428
 429         if (data[0] != 0) {
 430                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 431                        wiphy_name(dev->wiphy), data[0]);
 432                 return -EINVAL;
 433         }
 434
 435         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 436                 return -EINVAL;
 437
 438         priv->output_limit = kmalloc(data[1] *
 439                 sizeof(struct pda_channel_output_limit) +
 440                 sizeof(*priv->output_limit), GFP_KERNEL);
 441
 442         if (!priv->output_limit)
 443                 return -ENOMEM;
 444
 445         priv->output_limit->offset = 0;
 446         priv->output_limit->entries = data[1];
 447         priv->output_limit->entry_size =
 448                 sizeof(struct pda_channel_output_limit);
 449         priv->output_limit->len = priv->output_limit->entry_size *
 450                                   priv->output_limit->entries +
 451                                   priv->output_limit->offset;
 452
 453         memcpy(priv->output_limit->data, &data[2],
 454                data[1] * sizeof(struct pda_channel_output_limit));
 455
 456         return 0;
 457 }
 458
 459 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 460                                                size_t total_len)
 461 {
 462         struct p54_cal_database *dst;
 463         size_t payload_len, entries, entry_size, offset;
 464
 465         payload_len = le16_to_cpu(src->len);
 466         entries = le16_to_cpu(src->entries);
 467         entry_size = le16_to_cpu(src->entry_size);
 468         offset = le16_to_cpu(src->offset);
 469         if (((entries * entry_size + offset) != payload_len) ||
 470              (payload_len + sizeof(*src) != total_len))
 471                 return NULL;
 472
 473         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 474         if (!dst)
 475                 return NULL;
 476
 477         dst->entries = entries;
 478         dst->entry_size = entry_size;
 479         dst->offset = offset;
 480         dst->len = payload_len;
 481
 482         memcpy(dst->data, src->data, payload_len);
 483         return dst;
 484 }
 485
 486 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 487 {
 488         struct p54_common *priv = dev->priv;
 489         struct eeprom_pda_wrap *wrap = NULL;
 490         struct pda_entry *entry;
 491         unsigned int data_len, entry_len;
 492         void *tmp;
 493         int err;
 494         u8 *end = (u8 *)eeprom + len;
 495         u16 synth = 0;
 496
 497         wrap = (struct eeprom_pda_wrap *) eeprom;
 498         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 499
 500         /* verify that at least the entry length/code fits */
 501         while ((u8 *)entry <= end - sizeof(*entry)) {
 502                 entry_len = le16_to_cpu(entry->len);
 503                 data_len = ((entry_len - 1) << 1);
 504
 505                 /* abort if entry exceeds whole structure */
 506                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 507                         break;
 508
 509                 switch (le16_to_cpu(entry->code)) {
 510                 case PDR_MAC_ADDRESS:
 511                         if (data_len != ETH_ALEN)
 512                                 break;
 513                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 514                         break;
 515                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 516                         if (priv->output_limit)
 517                                 break;
 518                         err = p54_convert_output_limits(dev, entry->data,
 519                                                         data_len);
 520                         if (err)
 521                                 goto err;
 522                         break;
 523                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 524                         struct pda_pa_curve_data *curve_data =
 525                                 (struct pda_pa_curve_data *)entry->data;
 526                         if (data_len < sizeof(*curve_data)) {
 527                                 err = -EINVAL;
 528                                 goto err;
 529                         }
 530
 531                         switch (curve_data->cal_method_rev) {
 532                         case 0:
 533                                 err = p54_convert_rev0(dev, curve_data);
 534                                 break;
 535                         case 1:
 536                                 err = p54_convert_rev1(dev, curve_data);
 537                                 break;
 538                         default:
 539                                 printk(KERN_ERR "%s: unknown curve data "
 540                                                 "revision %d\n",
 541                                                 wiphy_name(dev->wiphy),
 542                                                 curve_data->cal_method_rev);
 543                                 err = -ENODEV;
 544                                 break;
 545                         }
 546                         if (err)
 547                                 goto err;
 548                         }
 549                         break;
 550                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 551                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 552                         if (!priv->iq_autocal) {
 553                                 err = -ENOMEM;
 554                                 goto err;
 555                         }
 556
 557                         memcpy(priv->iq_autocal, entry->data, data_len);
 558                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 559                         break;
 560                 case PDR_DEFAULT_COUNTRY:
 561                         p54_parse_default_country(dev, entry->data, data_len);
 562                         break;
 563                 case PDR_INTERFACE_LIST:
 564                         tmp = entry->data;
 565                         while ((u8 *)tmp < entry->data + data_len) {
 566                                 struct bootrec_exp_if *exp_if = tmp;
 567                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 568                                         synth = le16_to_cpu(exp_if->variant);
 569                                 tmp += sizeof(struct bootrec_exp_if);
 570                         }
 571                         break;
 572                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 573                         if (data_len < 2)
 574                                 break;
 575                         priv->version = *(u8 *)(entry->data + 1);
 576                         break;
 577                 case PDR_RSSI_LINEAR_APPROXIMATION:
 578                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 579                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 580                         p54_parse_rssical(dev, entry->data, data_len,
 581                                           le16_to_cpu(entry->code));
 582                         break;
 583                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 584                         __le16 *src = (void *) entry->data;
 585                         s16 *dst = (void *) &priv->rssical_db;
 586                         int i;
 587
 588                         if (data_len != sizeof(priv->rssical_db)) {
 589                                 err = -EINVAL;
 590                                 goto err;
 591                         }
 592                         for (i = 0; i < sizeof(priv->rssical_db) /
 593                                         sizeof(*src); i++)
 594                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 595                         }
 596                         break;
 597                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 598                         struct pda_custom_wrapper *pda = (void *) entry->data;
 599                         if (priv->output_limit || data_len < sizeof(*pda))
 600                                 break;
 601                         priv->output_limit = p54_convert_db(pda, data_len);
 602                         }
 603                         break;
 604                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 605                         struct pda_custom_wrapper *pda = (void *) entry->data;
 606                         if (priv->curve_data || data_len < sizeof(*pda))
 607                                 break;
 608                         priv->curve_data = p54_convert_db(pda, data_len);
 609                         }
 610                         break;
 611                 case PDR_END:
 612                         /* make it overrun */
 613                         entry_len = len;
 614                         break;
 615                 case PDR_MANUFACTURING_PART_NUMBER:
 616                 case PDR_PDA_VERSION:
 617                 case PDR_NIC_SERIAL_NUMBER:
 618                 case PDR_REGULATORY_DOMAIN_LIST:
 619                 case PDR_TEMPERATURE_TYPE:
 620                 case PDR_PRISM_PCI_IDENTIFIER:
 621                 case PDR_COUNTRY_INFORMATION:
 622                 case PDR_OEM_NAME:
 623                 case PDR_PRODUCT_NAME:
 624                 case PDR_UTF8_OEM_NAME:
 625                 case PDR_UTF8_PRODUCT_NAME:
 626                 case PDR_COUNTRY_LIST:
 627                 case PDR_ANTENNA_GAIN:
 628                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 629                 case PDR_REGULATORY_POWER_LIMITS:
 630                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 631                 case PDR_PRISM_TX_IQ_CALIBRATION:
 632                 case PDR_BASEBAND_REGISTERS:
 633                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 634                         break;
 635                 default:
 636                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 637                                 wiphy_name(dev->wiphy),
 638                                 le16_to_cpu(entry->code));
 639                         break;
 640                 }
 641
 642                 entry = (void *)entry + (entry_len + 1)*2;
 643         }
 644
 645         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 646             !priv->curve_data) {
 647                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 648                         wiphy_name(dev->wiphy));
 649                 err = -EINVAL;
 650                 goto err;
 651         }
 652
 653         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 654         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 655                 p54_init_xbow_synth(dev);
 656         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 657                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 658         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 659                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 660         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 661                 priv->rx_diversity_mask = 3;
 662         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 663                 priv->tx_diversity_mask = 3;
 664
 665         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 666                 u8 perm_addr[ETH_ALEN];
 667
 668                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 669                         wiphy_name(dev->wiphy));
 670                 random_ether_addr(perm_addr);
 671                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 672         }
 673
 674         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 675                 wiphy_name(dev->wiphy),
 676                 dev->wiphy->perm_addr,
 677                 priv->version, p54_rf_chips[priv->rxhw]);
 678
 679         return 0;
 680
 681   err:
 682         if (priv->iq_autocal) {
 683                 kfree(priv->iq_autocal);
 684                 priv->iq_autocal = NULL;
 685         }
 686
 687         if (priv->output_limit) {
 688                 kfree(priv->output_limit);
 689                 priv->output_limit = NULL;
 690         }
 691
 692         if (priv->curve_data) {
 693                 kfree(priv->curve_data);
 694                 priv->curve_data = NULL;
 695         }
 696
 697         printk(KERN_ERR "%s: eeprom parse failed!\n",
 698                 wiphy_name(dev->wiphy));
 699         return err;
 700 }
 701 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 702
 703 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 704 {
 705         struct p54_common *priv = dev->priv;
 706         int band = dev->conf.channel->band;
 707
 708         if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW)
 709                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 710                          priv->rssical_db[band].add) / 4;
 711         else
 712                 /*
 713                  * TODO: find the correct formula
 714                  */
 715                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 716                          priv->rssical_db[band].add) / 4;
 717 }
 718
 719 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 720 {
 721         struct p54_common *priv = dev->priv;
 722         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 723         struct ieee80211_rx_status rx_status = {0};
 724         u16 freq = le16_to_cpu(hdr->freq);
 725         size_t header_len = sizeof(*hdr);
 726         u32 tsf32;
 727         u8 rate = hdr->rate & 0xf;
 728
 729         /*
 730          * If the device is in a unspecified state we have to
 731          * ignore all data frames. Else we could end up with a
 732          * nasty crash.
 733          */
 734         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 735                 return 0;
 736
 737         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 738                 if (priv->filter_flags & FIF_FCSFAIL)
 739                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 740                 else
 741                         return 0;
 742         }
 743
 744         if (hdr->decrypt_status == P54_DECRYPT_OK)
 745                 rx_status.flag |= RX_FLAG_DECRYPTED;
 746         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 747             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 748                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 749
 750         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 751         rx_status.noise = priv->noise;
 752         /* XX correct? */
 753         rx_status.qual = (100 * hdr->rssi) / 127;
 754         if (hdr->rate & 0x10)
 755                 rx_status.flag |= RX_FLAG_SHORTPRE;
 756         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 757                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 758         else
 759                 rx_status.rate_idx = rate;
 760
 761         rx_status.freq = freq;
 762         rx_status.band =  dev->conf.channel->band;
 763         rx_status.antenna = hdr->antenna;
 764
 765         tsf32 = le32_to_cpu(hdr->tsf32);
 766         if (tsf32 < priv->tsf_low32)
 767                 priv->tsf_high32++;
 768         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 769         priv->tsf_low32 = tsf32;
 770
 771         rx_status.flag |= RX_FLAG_TSFT;
 772
 773         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 774                 header_len += hdr->align[0];
 775
 776         skb_pull(skb, header_len);
 777         skb_trim(skb, le16_to_cpu(hdr->len));
 778
 779         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 780
 781         queue_delayed_work(dev->workqueue, &priv->work,
 782                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 783
 784         return -1;
 785 }
 786
 787 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 788 {
 789         struct p54_common *priv = dev->priv;
 790         int i;
 791
 792         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 793                 return ;
 794
 795         for (i = 0; i < dev->queues; i++)
 796                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 797                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 798                         ieee80211_wake_queue(dev, i);
 799 }
 800
 801 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 802 {
 803         struct p54_common *priv = dev->priv;
 804         struct ieee80211_tx_info *info;
 805         struct p54_tx_info *range;
 806         unsigned long flags;
 807         u32 freed = 0, last_addr = priv->rx_start;
 808
 809         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 810                 return;
 811
 812         /*
 813          * don't try to free an already unlinked skb
 814          */
 815         if (unlikely((!skb->next) || (!skb->prev)))
 816                 return;
 817
 818         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 819         info = IEEE80211_SKB_CB(skb);
 820         range = (void *)info->rate_driver_data;
 821         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 822                 struct ieee80211_tx_info *ni;
 823                 struct p54_tx_info *mr;
 824
 825                 ni = IEEE80211_SKB_CB(skb->prev);
 826                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 827                 last_addr = mr->end_addr;
 828         }
 829         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 830                 struct ieee80211_tx_info *ni;
 831                 struct p54_tx_info *mr;
 832
 833                 ni = IEEE80211_SKB_CB(skb->next);
 834                 mr = (struct p54_tx_info *)ni->rate_driver_data;
 835                 freed = mr->start_addr - last_addr;
 836         } else
 837                 freed = priv->rx_end - last_addr;
 838         __skb_unlink(skb, &priv->tx_queue);
 839         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 840         dev_kfree_skb_any(skb);
 841
 842         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 843                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 844                 p54_wake_free_queues(dev);
 845 }
 846 EXPORT_SYMBOL_GPL(p54_free_skb);
 847
 848 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 849                                            __le32 req_id)
 850 {
 851         struct p54_common *priv = dev->priv;
 852         struct sk_buff *entry = priv->tx_queue.next;
 853         unsigned long flags;
 854
 855         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 856         while (entry != (struct sk_buff *)&priv->tx_queue) {
 857                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 858
 859                 if (hdr->req_id == req_id) {
 860                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 861                         return entry;
 862                 }
 863                 entry = entry->next;
 864         }
 865         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 866         return NULL;
 867 }
 868
 869 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 870 {
 871         struct p54_common *priv = dev->priv;
 872         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 873         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 874         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 875         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 876         struct p54_tx_info *range = NULL;
 877         u32 freed = 0;
 878         u32 last_addr = priv->rx_start;
 879         unsigned long flags;
 880         int count, idx;
 881
 882         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 883         while (entry != (struct sk_buff *)&priv->tx_queue) {
 884                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 885                 struct p54_hdr *entry_hdr;
 886                 struct p54_tx_data *entry_data;
 887                 unsigned int pad = 0, frame_len;
 888
 889                 range = (void *)info->rate_driver_data;
 890                 if (range->start_addr != addr) {
 891                         last_addr = range->end_addr;
 892                         entry = entry->next;
 893                         continue;
 894                 }
 895
 896                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 897                         struct ieee80211_tx_info *ni;
 898                         struct p54_tx_info *mr;
 899
 900                         ni = IEEE80211_SKB_CB(entry->next);
 901                         mr = (struct p54_tx_info *)ni->rate_driver_data;
 902                         freed = mr->start_addr - last_addr;
 903                 } else
 904                         freed = priv->rx_end - last_addr;
 905
 906                 last_addr = range->end_addr;
 907                 __skb_unlink(entry, &priv->tx_queue);
 908                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 909
 910                 frame_len = entry->len;
 911                 entry_hdr = (struct p54_hdr *) entry->data;
 912                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 913                 priv->tx_stats[entry_data->hw_queue].len--;
 914                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 915
 916                 /*
 917                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 918                  * generated by the driver. Therefore tx_status is bogus
 919                  * and we don't want to confuse the mac80211 stack.
 920                  */
 921                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 922                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 923                                 priv->cached_beacon = NULL;
 924
 925                         kfree_skb(entry);
 926                         goto out;
 927                 }
 928
 929                 /*
 930                  * Clear manually, ieee80211_tx_info_clear_status would
 931                  * clear the counts too and we need them.
 932                  */
 933                 memset(&info->status.ampdu_ack_len, 0,
 934                        sizeof(struct ieee80211_tx_info) -
 935                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 936                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 937                                       status.ampdu_ack_len) != 23);
 938
 939                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 940                         pad = entry_data->align[0];
 941
 942                 /* walk through the rates array and adjust the counts */
 943                 count = payload->tries;
 944                 for (idx = 0; idx < 4; idx++) {
 945                         if (count >= info->status.rates[idx].count) {
 946                                 count -= info->status.rates[idx].count;
 947                         } else if (count > 0) {
 948                                 info->status.rates[idx].count = count;
 949                                 count = 0;
 950                         } else {
 951                                 info->status.rates[idx].idx = -1;
 952                                 info->status.rates[idx].count = 0;
 953                         }
 954                 }
 955
 956                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 957                      (!payload->status))
 958                         info->flags |= IEEE80211_TX_STAT_ACK;
 959                 if (payload->status & P54_TX_PSM_CANCELLED)
 960                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 961                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 962                                 (int)payload->ack_rssi);
 963
 964                 /* Undo all changes to the frame. */
 965                 switch (entry_data->key_type) {
 966                 case P54_CRYPTO_TKIPMICHAEL: {
 967                         u8 *iv = (u8 *)(entry_data->align + pad +
 968                                         entry_data->crypt_offset);
 969
 970                         /* Restore the original TKIP IV. */
 971                         iv[2] = iv[0];
 972                         iv[0] = iv[1];
 973                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 974
 975                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 976                         break;
 977                         }
 978                 case P54_CRYPTO_AESCCMP:
 979                         frame_len -= 8; /* remove CCMP_MIC */
 980                         break;
 981                 case P54_CRYPTO_WEP:
 982                         frame_len -= 4; /* remove WEP_ICV */
 983                         break;
 984                 }
 985                 skb_trim(entry, frame_len);
 986                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 987                 ieee80211_tx_status_irqsafe(dev, entry);
 988                 goto out;
 989         }
 990         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 991
 992 out:
 993         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 994                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 995                 p54_wake_free_queues(dev);
 996 }
 997
 998 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 999                                    struct sk_buff *skb)
1000 {
1001         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1002         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1003         struct p54_common *priv = dev->priv;
1004
1005         if (!priv->eeprom)
1006                 return ;
1007
1008         if (priv->fw_var >= 0x509) {
1009                 memcpy(priv->eeprom, eeprom->v2.data,
1010                        le16_to_cpu(eeprom->v2.len));
1011         } else {
1012                 memcpy(priv->eeprom, eeprom->v1.data,
1013                        le16_to_cpu(eeprom->v1.len));
1014         }
1015
1016         complete(&priv->eeprom_comp);
1017 }
1018
1019 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1020 {
1021         struct p54_common *priv = dev->priv;
1022         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1023         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1024         u32 tsf32;
1025
1026         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1027                 return ;
1028
1029         tsf32 = le32_to_cpu(stats->tsf32);
1030         if (tsf32 < priv->tsf_low32)
1031                 priv->tsf_high32++;
1032         priv->tsf_low32 = tsf32;
1033
1034         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1035         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1036         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1037
1038         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1039
1040         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1041 }
1042
1043 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1044 {
1045         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1046         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1047         u16 event = le16_to_cpu(trap->event);
1048         u16 freq = le16_to_cpu(trap->frequency);
1049
1050         switch (event) {
1051         case P54_TRAP_BEACON_TX:
1052                 break;
1053         case P54_TRAP_RADAR:
1054                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1055                         wiphy_name(dev->wiphy), freq);
1056                 break;
1057         case P54_TRAP_NO_BEACON:
1058                 break;
1059         case P54_TRAP_SCAN:
1060                 break;
1061         case P54_TRAP_TBTT:
1062                 break;
1063         case P54_TRAP_TIMER:
1064                 break;
1065         default:
1066                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1067                        wiphy_name(dev->wiphy), event, freq);
1068                 break;
1069         }
1070 }
1071
1072 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1073 {
1074         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1075
1076         switch (le16_to_cpu(hdr->type)) {
1077         case P54_CONTROL_TYPE_TXDONE:
1078                 p54_rx_frame_sent(dev, skb);
1079                 break;
1080         case P54_CONTROL_TYPE_TRAP:
1081                 p54_rx_trap(dev, skb);
1082                 break;
1083         case P54_CONTROL_TYPE_BBP:
1084                 break;
1085         case P54_CONTROL_TYPE_STAT_READBACK:
1086                 p54_rx_stats(dev, skb);
1087                 break;
1088         case P54_CONTROL_TYPE_EEPROM_READBACK:
1089                 p54_rx_eeprom_readback(dev, skb);
1090                 break;
1091         default:
1092                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1093                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1094                 break;
1095         }
1096
1097         return 0;
1098 }
1099
1100 /* returns zero if skb can be reused */
1101 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1102 {
1103         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1104
1105         if (type & P54_HDR_FLAG_CONTROL)
1106                 return p54_rx_control(dev, skb);
1107         else
1108                 return p54_rx_data(dev, skb);
1109 }
1110 EXPORT_SYMBOL_GPL(p54_rx);
1111
1112 /*
1113  * So, the firmware is somewhat stupid and doesn't know what places in its
1114  * memory incoming data should go to. By poking around in the firmware, we
1115  * can find some unused memory to upload our packets to. However, data that we
1116  * want the card to TX needs to stay intact until the card has told us that
1117  * it is done with it. This function finds empty places we can upload to and
1118  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1119  * p54_free_skb frees allocated areas.
1120  */
1121 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1122                                struct p54_hdr *data, u32 len)
1123 {
1124         struct p54_common *priv = dev->priv;
1125         struct sk_buff *entry = priv->tx_queue.next;
1126         struct sk_buff *target_skb = NULL;
1127         struct ieee80211_tx_info *info;
1128         struct p54_tx_info *range;
1129         u32 last_addr = priv->rx_start;
1130         u32 largest_hole = 0;
1131         u32 target_addr = priv->rx_start;
1132         unsigned long flags;
1133         unsigned int left;
1134         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1135
1136         if (!skb)
1137                 return -EINVAL;
1138
1139         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1140
1141         left = skb_queue_len(&priv->tx_queue);
1142         if (unlikely(left >= 28)) {
1143                 /*
1144                  * The tx_queue is nearly full!
1145                  * We have throttle normal data traffic, because we must
1146                  * have a few spare slots for control frames left.
1147                  */
1148                 ieee80211_stop_queues(dev);
1149                 queue_delayed_work(dev->workqueue, &priv->work,
1150                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1151
1152                 if (unlikely(left == 32)) {
1153                         /*
1154                          * The tx_queue is now really full.
1155                          *
1156                          * TODO: check if the device has crashed and reset it.
1157                          */
1158                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1159                         return -ENOSPC;
1160                 }
1161         }
1162
1163         while (left--) {
1164                 u32 hole_size;
1165                 info = IEEE80211_SKB_CB(entry);
1166                 range = (void *)info->rate_driver_data;
1167                 hole_size = range->start_addr - last_addr;
1168                 if (!target_skb && hole_size >= len) {
1169                         target_skb = entry->prev;
1170                         hole_size -= len;
1171                         target_addr = last_addr;
1172                 }
1173                 largest_hole = max(largest_hole, hole_size);
1174                 last_addr = range->end_addr;
1175                 entry = entry->next;
1176         }
1177         if (!target_skb && priv->rx_end - last_addr >= len) {
1178                 target_skb = priv->tx_queue.prev;
1179                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1180                 if (!skb_queue_empty(&priv->tx_queue)) {
1181                         info = IEEE80211_SKB_CB(target_skb);
1182                         range = (void *)info->rate_driver_data;
1183                         target_addr = range->end_addr;
1184                 }
1185         } else
1186                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1187
1188         if (!target_skb) {
1189                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1190                 ieee80211_stop_queues(dev);
1191                 return -ENOSPC;
1192         }
1193
1194         info = IEEE80211_SKB_CB(skb);
1195         range = (void *)info->rate_driver_data;
1196         range->start_addr = target_addr;
1197         range->end_addr = target_addr + len;
1198         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1199         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1200
1201         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1202                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1203                 ieee80211_stop_queues(dev);
1204
1205         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1206         return 0;
1207 }
1208
1209 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1210                                      u16 payload_len, u16 type, gfp_t memflags)
1211 {
1212         struct p54_common *priv = dev->priv;
1213         struct p54_hdr *hdr;
1214         struct sk_buff *skb;
1215         size_t frame_len = sizeof(*hdr) + payload_len;
1216
1217         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1218                 return NULL;
1219
1220         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1221         if (!skb)
1222                 return NULL;
1223         skb_reserve(skb, priv->tx_hdr_len);
1224
1225         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1226         hdr->flags = cpu_to_le16(hdr_flags);
1227         hdr->len = cpu_to_le16(payload_len);
1228         hdr->type = cpu_to_le16(type);
1229         hdr->tries = hdr->rts_tries = 0;
1230
1231         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1232                 kfree_skb(skb);
1233                 return NULL;
1234         }
1235         return skb;
1236 }
1237
1238 int p54_read_eeprom(struct ieee80211_hw *dev)
1239 {
1240         struct p54_common *priv = dev->priv;
1241         struct p54_eeprom_lm86 *eeprom_hdr;
1242         struct sk_buff *skb;
1243         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1244         int ret = -ENOMEM;
1245         void *eeprom = NULL;
1246
1247         maxblocksize = EEPROM_READBACK_LEN;
1248         if (priv->fw_var >= 0x509)
1249                 maxblocksize -= 0xc;
1250         else
1251                 maxblocksize -= 0x4;
1252
1253         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1254                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1255                             GFP_KERNEL);
1256         if (!skb)
1257                 goto free;
1258         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1259         if (!priv->eeprom)
1260                 goto free;
1261         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1262         if (!eeprom)
1263                 goto free;
1264
1265         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1266                      sizeof(*eeprom_hdr) + maxblocksize);
1267
1268         while (eeprom_size) {
1269                 blocksize = min(eeprom_size, maxblocksize);
1270                 if (priv->fw_var < 0x509) {
1271                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1272                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1273                 } else {
1274                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1275                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1276                         eeprom_hdr->v2.magic2 = 0xf;
1277                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1278                 }
1279                 priv->tx(dev, skb);
1280
1281                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1282                         printk(KERN_ERR "%s: device does not respond!\n",
1283                                 wiphy_name(dev->wiphy));
1284                         ret = -EBUSY;
1285                         goto free;
1286                 }
1287
1288                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1289                 offset += blocksize;
1290                 eeprom_size -= blocksize;
1291         }
1292
1293         ret = p54_parse_eeprom(dev, eeprom, offset);
1294 free:
1295         kfree(priv->eeprom);
1296         priv->eeprom = NULL;
1297         p54_free_skb(dev, skb);
1298         kfree(eeprom);
1299
1300         return ret;
1301 }
1302 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1303
1304 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1305                 bool set)
1306 {
1307         struct p54_common *priv = dev->priv;
1308         struct sk_buff *skb;
1309         struct p54_tim *tim;
1310
1311         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1312                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1313         if (!skb)
1314                 return -ENOMEM;
1315
1316         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1317         tim->count = 1;
1318         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1319         priv->tx(dev, skb);
1320         return 0;
1321 }
1322
1323 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1324 {
1325         struct p54_common *priv = dev->priv;
1326         struct sk_buff *skb;
1327         struct p54_sta_unlock *sta;
1328
1329         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1330                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1331         if (!skb)
1332                 return -ENOMEM;
1333
1334         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1335         memcpy(sta->addr, addr, ETH_ALEN);
1336         priv->tx(dev, skb);
1337         return 0;
1338 }
1339
1340 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1341                               enum sta_notify_cmd notify_cmd,
1342                               struct ieee80211_sta *sta)
1343 {
1344         switch (notify_cmd) {
1345         case STA_NOTIFY_ADD:
1346         case STA_NOTIFY_REMOVE:
1347                 /*
1348                  * Notify the firmware that we don't want or we don't
1349                  * need to buffer frames for this station anymore.
1350                  */
1351
1352                 p54_sta_unlock(dev, sta->addr);
1353                 break;
1354         case STA_NOTIFY_AWAKE:
1355                 /* update the firmware's filter table */
1356                 p54_sta_unlock(dev, sta->addr);
1357                 break;
1358         default:
1359                 break;
1360         }
1361 }
1362
1363 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1364 {
1365         struct p54_common *priv = dev->priv;
1366         struct sk_buff *skb;
1367         struct p54_hdr *hdr;
1368         struct p54_txcancel *cancel;
1369
1370         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1371                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1372         if (!skb)
1373                 return -ENOMEM;
1374
1375         hdr = (void *)entry->data;
1376         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1377         cancel->req_id = hdr->req_id;
1378         priv->tx(dev, skb);
1379         return 0;
1380 }
1381
1382 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1383                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1384                 u16 *flags, u16 *aid)
1385 {
1386         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1387         struct p54_common *priv = dev->priv;
1388         int ret = 1;
1389
1390         switch (priv->mode) {
1391         case NL80211_IFTYPE_MONITOR:
1392                 /*
1393                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1394                  * every frame in promiscuous/monitor mode.
1395                  * see STSW45x0C LMAC API - page 12.
1396                  */
1397                 *aid = 0;
1398                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1399                 *queue += P54_QUEUE_DATA;
1400                 break;
1401         case NL80211_IFTYPE_STATION:
1402                 *aid = 1;
1403                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1404                         *queue = P54_QUEUE_MGMT;
1405                         ret = 0;
1406                 } else
1407                         *queue += P54_QUEUE_DATA;
1408                 break;
1409         case NL80211_IFTYPE_AP:
1410         case NL80211_IFTYPE_ADHOC:
1411         case NL80211_IFTYPE_MESH_POINT:
1412                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1413                         *aid = 0;
1414                         *queue = P54_QUEUE_CAB;
1415                         return 0;
1416                 }
1417
1418                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1419                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1420                                 *aid = 0;
1421                                 *queue = P54_QUEUE_MGMT;
1422                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1423                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1424                                 return 0;
1425                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1426                                 *aid = 0;
1427
1428                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1429                                         /*
1430                                          * Injecting beacons on top of a AP is
1431                                          * not a good idea... nevertheless,
1432                                          * it should be doable.
1433                                          */
1434
1435                                         *queue += P54_QUEUE_DATA;
1436                                         return 1;
1437                                 }
1438
1439                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1440                                 *queue = P54_QUEUE_BEACON;
1441                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1442                                 return 0;
1443                         } else {
1444                                 *queue = P54_QUEUE_MGMT;
1445                                 ret = 0;
1446                         }
1447                 } else
1448                         *queue += P54_QUEUE_DATA;
1449
1450                 if (info->control.sta)
1451                         *aid = info->control.sta->aid;
1452                 else
1453                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1454                 break;
1455         }
1456         return ret;
1457 }
1458
1459 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1460 {
1461         switch (alg) {
1462         case ALG_WEP:
1463                 return P54_CRYPTO_WEP;
1464         case ALG_TKIP:
1465                 return P54_CRYPTO_TKIPMICHAEL;
1466         case ALG_CCMP:
1467                 return P54_CRYPTO_AESCCMP;
1468         default:
1469                 return 0;
1470         }
1471 }
1472
1473 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1474 {
1475         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1476         struct ieee80211_tx_queue_stats *current_queue;
1477         struct p54_common *priv = dev->priv;
1478         struct p54_hdr *hdr;
1479         struct p54_tx_data *txhdr;
1480         size_t padding, len, tim_len = 0;
1481         int i, j, ridx, ret;
1482         u16 hdr_flags = 0, aid = 0;
1483         u8 rate, queue, crypt_offset = 0;
1484         u8 cts_rate = 0x20;
1485         u8 rc_flags;
1486         u8 calculated_tries[4];
1487         u8 nrates = 0, nremaining = 8;
1488
1489         queue = skb_get_queue_mapping(skb);
1490
1491         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1492         current_queue = &priv->tx_stats[queue];
1493         if (unlikely((current_queue->len > current_queue->limit) && ret))
1494                 return NETDEV_TX_BUSY;
1495         current_queue->len++;
1496         current_queue->count++;
1497         if ((current_queue->len == current_queue->limit) && ret)
1498                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1499
1500         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1501         len = skb->len;
1502
1503         if (info->control.hw_key) {
1504                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1505                 if (info->control.hw_key->alg == ALG_TKIP) {
1506                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1507                         /*
1508                          * The firmware excepts that the IV has to have
1509                          * this special format
1510                          */
1511                         iv[1] = iv[0];
1512                         iv[0] = iv[2];
1513                         iv[2] = 0;
1514                 }
1515         }
1516
1517         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1518         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1519
1520         if (padding)
1521                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1522         hdr->type = cpu_to_le16(aid);
1523         hdr->rts_tries = info->control.rates[0].count;
1524
1525         /*
1526          * we register the rates in perfect order, and
1527          * RTS/CTS won't happen on 5 GHz
1528          */
1529         cts_rate = info->control.rts_cts_rate_idx;
1530
1531         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1532
1533         /* see how many rates got used */
1534         for (i = 0; i < 4; i++) {
1535                 if (info->control.rates[i].idx < 0)
1536                         break;
1537                 nrates++;
1538         }
1539
1540         /* limit tries to 8/nrates per rate */
1541         for (i = 0; i < nrates; i++) {
1542                 /*
1543                  * The magic expression here is equivalent to 8/nrates for
1544                  * all values that matter, but avoids division and jumps.
1545                  * Note that nrates can only take the values 1 through 4.
1546                  */
1547                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1548                                                  info->control.rates[i].count);
1549                 nremaining -= calculated_tries[i];
1550         }
1551
1552         /* if there are tries left, distribute from back to front */
1553         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1554                 int tmp = info->control.rates[i].count - calculated_tries[i];
1555
1556                 if (tmp <= 0)
1557                         continue;
1558                 /* RC requested more tries at this rate */
1559
1560                 tmp = min_t(int, tmp, nremaining);
1561                 calculated_tries[i] += tmp;
1562                 nremaining -= tmp;
1563         }
1564
1565         ridx = 0;
1566         for (i = 0; i < nrates && ridx < 8; i++) {
1567                 /* we register the rates in perfect order */
1568                 rate = info->control.rates[i].idx;
1569                 if (info->band == IEEE80211_BAND_5GHZ)
1570                         rate += 4;
1571
1572                 /* store the count we actually calculated for TX status */
1573                 info->control.rates[i].count = calculated_tries[i];
1574
1575                 rc_flags = info->control.rates[i].flags;
1576                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1577                         rate |= 0x10;
1578                         cts_rate |= 0x10;
1579                 }
1580                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1581                         rate |= 0x40;
1582                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1583                         rate |= 0x20;
1584                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1585                         txhdr->rateset[ridx] = rate;
1586                         ridx++;
1587                 }
1588         }
1589
1590         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1591                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1592
1593         /* TODO: enable bursting */
1594         hdr->flags = cpu_to_le16(hdr_flags);
1595         hdr->tries = ridx;
1596         txhdr->rts_rate_idx = 0;
1597         if (info->control.hw_key) {
1598                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1599                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1600                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1601                 if (info->control.hw_key->alg == ALG_TKIP) {
1602                         if (unlikely(skb_tailroom(skb) < 12))
1603                                 goto err;
1604                         /* reserve space for the MIC key */
1605                         len += 8;
1606                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1607                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1608                 }
1609                 /* reserve some space for ICV */
1610                 len += info->control.hw_key->icv_len;
1611                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1612                        info->control.hw_key->icv_len);
1613         } else {
1614                 txhdr->key_type = 0;
1615                 txhdr->key_len = 0;
1616         }
1617         txhdr->crypt_offset = crypt_offset;
1618         txhdr->hw_queue = queue;
1619         txhdr->backlog = current_queue->len;
1620         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1621         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1622                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1623         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1624                 txhdr->longbow.cts_rate = cts_rate;
1625                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1626         } else {
1627                 txhdr->normal.output_power = priv->output_power;
1628                 txhdr->normal.cts_rate = cts_rate;
1629         }
1630         if (padding)
1631                 txhdr->align[0] = padding;
1632
1633         hdr->len = cpu_to_le16(len);
1634         /* modifies skb->cb and with it info, so must be last! */
1635         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1636                 goto err;
1637         priv->tx(dev, skb);
1638
1639         queue_delayed_work(dev->workqueue, &priv->work,
1640                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1641
1642         return NETDEV_TX_OK;
1643
1644  err:
1645         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1646         current_queue->len--;
1647         current_queue->count--;
1648         return NETDEV_TX_BUSY;
1649 }
1650
1651 static int p54_setup_mac(struct ieee80211_hw *dev)
1652 {
1653         struct p54_common *priv = dev->priv;
1654         struct sk_buff *skb;
1655         struct p54_setup_mac *setup;
1656         u16 mode;
1657
1658         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1659                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1660         if (!skb)
1661                 return -ENOMEM;
1662
1663         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1664         if (dev->conf.radio_enabled) {
1665                 switch (priv->mode) {
1666                 case NL80211_IFTYPE_STATION:
1667                         mode = P54_FILTER_TYPE_STATION;
1668                         break;
1669                 case NL80211_IFTYPE_AP:
1670                         mode = P54_FILTER_TYPE_AP;
1671                         break;
1672                 case NL80211_IFTYPE_ADHOC:
1673                 case NL80211_IFTYPE_MESH_POINT:
1674                         mode = P54_FILTER_TYPE_IBSS;
1675                         break;
1676                 case NL80211_IFTYPE_MONITOR:
1677                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1678                         break;
1679                 default:
1680                         mode = P54_FILTER_TYPE_NONE;
1681                         break;
1682                 }
1683
1684                 /*
1685                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1686                  * STSW45X0C LMAC API - page 12
1687                  */
1688                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1689                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1690                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1691                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1692         } else
1693                 mode = P54_FILTER_TYPE_RX_DISABLED;
1694
1695         setup->mac_mode = cpu_to_le16(mode);
1696         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1697         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1698         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1699         setup->rx_align = 0;
1700         if (priv->fw_var < 0x500) {
1701                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1702                 memset(setup->v1.rts_rates, 0, 8);
1703                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1704                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1705                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1706                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1707                 setup->v1.unalloc0 = cpu_to_le16(0);
1708         } else {
1709                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1710                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1711                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1712                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1713                 setup->v2.truncate = cpu_to_le16(48896);
1714                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1715                 setup->v2.sbss_offset = 0;
1716                 setup->v2.mcast_window = 0;
1717                 setup->v2.rx_rssi_threshold = 0;
1718                 setup->v2.rx_ed_threshold = 0;
1719                 setup->v2.ref_clock = cpu_to_le32(644245094);
1720                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1721                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1722         }
1723         priv->tx(dev, skb);
1724         return 0;
1725 }
1726
1727 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1728 {
1729         struct p54_common *priv = dev->priv;
1730         struct sk_buff *skb;
1731         struct p54_hdr *hdr;
1732         struct p54_scan_head *head;
1733         struct p54_iq_autocal_entry *iq_autocal;
1734         union p54_scan_body_union *body;
1735         struct p54_scan_tail_rate *rate;
1736         struct pda_rssi_cal_entry *rssi;
1737         unsigned int i;
1738         void *entry;
1739         int band = dev->conf.channel->band;
1740         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1741
1742         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1743                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1744                             sizeof(*rate) + 2 * sizeof(*rssi),
1745                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1746         if (!skb)
1747                 return -ENOMEM;
1748
1749         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1750         memset(head->scan_params, 0, sizeof(head->scan_params));
1751         head->mode = cpu_to_le16(mode);
1752         head->dwell = cpu_to_le16(dwell);
1753         head->freq = freq;
1754
1755         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1756                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1757                 *pa_power_points = cpu_to_le16(0x0c);
1758         }
1759
1760         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1761         for (i = 0; i < priv->iq_autocal_len; i++) {
1762                 if (priv->iq_autocal[i].freq != freq)
1763                         continue;
1764
1765                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1766                        sizeof(struct p54_iq_autocal_entry));
1767                 break;
1768         }
1769         if (i == priv->iq_autocal_len)
1770                 goto err;
1771
1772         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1773                 body = (void *) skb_put(skb, sizeof(body->longbow));
1774         else
1775                 body = (void *) skb_put(skb, sizeof(body->normal));
1776
1777         for (i = 0; i < priv->output_limit->entries; i++) {
1778                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1779                                      priv->output_limit->entry_size * i);
1780
1781                 if (*entry_freq != freq)
1782                         continue;
1783
1784                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1785                         memcpy(&body->longbow.power_limits,
1786                                (void *) entry_freq + sizeof(__le16),
1787                                priv->output_limit->entry_size);
1788                 } else {
1789                         struct pda_channel_output_limit *limits =
1790                                (void *) entry_freq;
1791
1792                         body->normal.val_barker = 0x38;
1793                         body->normal.val_bpsk = body->normal.dup_bpsk =
1794                                 limits->val_bpsk;
1795                         body->normal.val_qpsk = body->normal.dup_qpsk =
1796                                 limits->val_qpsk;
1797                         body->normal.val_16qam = body->normal.dup_16qam =
1798                                 limits->val_16qam;
1799                         body->normal.val_64qam = body->normal.dup_64qam =
1800                                 limits->val_64qam;
1801                 }
1802                 break;
1803         }
1804         if (i == priv->output_limit->entries)
1805                 goto err;
1806
1807         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1808         for (i = 0; i < priv->curve_data->entries; i++) {
1809                 if (*((__le16 *)entry) != freq) {
1810                         entry += priv->curve_data->entry_size;
1811                         continue;
1812                 }
1813
1814                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1815                         memcpy(&body->longbow.curve_data,
1816                                 (void *) entry + sizeof(__le16),
1817                                 priv->curve_data->entry_size);
1818                 } else {
1819                         struct p54_scan_body *chan = &body->normal;
1820                         struct pda_pa_curve_data *curve_data =
1821                                 (void *) priv->curve_data->data;
1822
1823                         entry += sizeof(__le16);
1824                         chan->pa_points_per_curve = 8;
1825                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1826                         memcpy(chan->curve_data, entry,
1827                                sizeof(struct p54_pa_curve_data_sample) *
1828                                min((u8)8, curve_data->points_per_channel));
1829                 }
1830                 break;
1831         }
1832         if (i == priv->curve_data->entries)
1833                 goto err;
1834
1835         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1836                 rate = (void *) skb_put(skb, sizeof(*rate));
1837                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1838                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1839                         rate->rts_rates[i] = i;
1840         }
1841
1842         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1843         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1844         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1845         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1846                 /* Longbow frontend needs ever more */
1847                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1848                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1849                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1850         }
1851
1852         if (priv->fw_var >= 0x509) {
1853                 rate = (void *) skb_put(skb, sizeof(*rate));
1854                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1855                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1856                         rate->rts_rates[i] = i;
1857         }
1858
1859         hdr = (struct p54_hdr *) skb->data;
1860         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1861
1862         priv->tx(dev, skb);
1863         return 0;
1864
1865  err:
1866         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1867         p54_free_skb(dev, skb);
1868         return -EINVAL;
1869 }
1870
1871 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1872 {
1873         struct p54_common *priv = dev->priv;
1874         struct sk_buff *skb;
1875         struct p54_led *led;
1876
1877         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1878                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1879         if (!skb)
1880                 return -ENOMEM;
1881
1882         led = (struct p54_led *)skb_put(skb, sizeof(*led));
1883         led->mode = cpu_to_le16(mode);
1884         led->led_permanent = cpu_to_le16(link);
1885         led->led_temporary = cpu_to_le16(act);
1886         led->duration = cpu_to_le16(1000);
1887         priv->tx(dev, skb);
1888         return 0;
1889 }
1890
1891 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1892 do {                                                            \
1893         queue.aifs = cpu_to_le16(ai_fs);                        \
1894         queue.cwmin = cpu_to_le16(cw_min);                      \
1895         queue.cwmax = cpu_to_le16(cw_max);                      \
1896         queue.txop = cpu_to_le16(_txop);                        \
1897 } while(0)
1898
1899 static int p54_set_edcf(struct ieee80211_hw *dev)
1900 {
1901         struct p54_common *priv = dev->priv;
1902         struct sk_buff *skb;
1903         struct p54_edcf *edcf;
1904
1905         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1906                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1907         if (!skb)
1908                 return -ENOMEM;
1909
1910         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1911         if (priv->use_short_slot) {
1912                 edcf->slottime = 9;
1913                 edcf->sifs = 0x10;
1914                 edcf->eofpad = 0x00;
1915         } else {
1916                 edcf->slottime = 20;
1917                 edcf->sifs = 0x0a;
1918                 edcf->eofpad = 0x06;
1919         }
1920         /* (see prism54/isl_oid.h for further details) */
1921         edcf->frameburst = cpu_to_le16(0);
1922         edcf->round_trip_delay = cpu_to_le16(0);
1923         edcf->flags = 0;
1924         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1925         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1926         priv->tx(dev, skb);
1927         return 0;
1928 }
1929
1930 static int p54_set_ps(struct ieee80211_hw *dev)
1931 {
1932         struct p54_common *priv = dev->priv;
1933         struct sk_buff *skb;
1934         struct p54_psm *psm;
1935         u16 mode;
1936         int i;
1937
1938         if (dev->conf.flags & IEEE80211_CONF_PS)
1939                 mode = P54_PSM | P54_PSM_DTIM | P54_PSM_MCBC;
1940         else
1941                 mode = P54_PSM_CAM;
1942
1943         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1944                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1945         if (!skb)
1946                 return -ENOMEM;
1947
1948         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1949         psm->mode = cpu_to_le16(mode);
1950         psm->aid = cpu_to_le16(priv->aid);
1951         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1952                 psm->intervals[i].interval =
1953                         cpu_to_le16(dev->conf.listen_interval);
1954                 psm->intervals[i].periods = cpu_to_le16(1);
1955         }
1956
1957         psm->beacon_rssi_skip_max = 60;
1958         psm->rssi_delta_threshold = 0;
1959         psm->nr = 0;
1960
1961         priv->tx(dev, skb);
1962
1963         return 0;
1964 }
1965
1966 static int p54_beacon_tim(struct sk_buff *skb)
1967 {
1968         /*
1969          * the good excuse for this mess is ... the firmware.
1970          * The dummy TIM MUST be at the end of the beacon frame,
1971          * because it'll be overwritten!
1972          */
1973
1974         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1975         u8 *pos, *end;
1976
1977         if (skb->len <= sizeof(mgmt))
1978                 return -EINVAL;
1979
1980         pos = (u8 *)mgmt->u.beacon.variable;
1981         end = skb->data + skb->len;
1982         while (pos < end) {
1983                 if (pos + 2 + pos[1] > end)
1984                         return -EINVAL;
1985
1986                 if (pos[0] == WLAN_EID_TIM) {
1987                         u8 dtim_len = pos[1];
1988                         u8 dtim_period = pos[3];
1989                         u8 *next = pos + 2 + dtim_len;
1990
1991                         if (dtim_len < 3)
1992                                 return -EINVAL;
1993
1994                         memmove(pos, next, end - next);
1995
1996                         if (dtim_len > 3)
1997                                 skb_trim(skb, skb->len - (dtim_len - 3));
1998
1999                         pos = end - (dtim_len + 2);
2000
2001                         /* add the dummy at the end */
2002                         pos[0] = WLAN_EID_TIM;
2003                         pos[1] = 3;
2004                         pos[2] = 0;
2005                         pos[3] = dtim_period;
2006                         pos[4] = 0;
2007                         return 0;
2008                 }
2009                 pos += 2 + pos[1];
2010         }
2011         return 0;
2012 }
2013
2014 static int p54_beacon_update(struct ieee80211_hw *dev,
2015                         struct ieee80211_vif *vif)
2016 {
2017         struct p54_common *priv = dev->priv;
2018         struct sk_buff *beacon;
2019         int ret;
2020
2021         if (priv->cached_beacon) {
2022                 p54_tx_cancel(dev, priv->cached_beacon);
2023                 /* wait for the last beacon the be freed */
2024                 msleep(10);
2025         }
2026
2027         beacon = ieee80211_beacon_get(dev, vif);
2028         if (!beacon)
2029                 return -ENOMEM;
2030         ret = p54_beacon_tim(beacon);
2031         if (ret)
2032                 return ret;
2033         ret = p54_tx(dev, beacon);
2034         if (ret)
2035                 return ret;
2036         priv->cached_beacon = beacon;
2037         priv->tsf_high32 = 0;
2038         priv->tsf_low32 = 0;
2039
2040         return 0;
2041 }
2042
2043 static int p54_start(struct ieee80211_hw *dev)
2044 {
2045         struct p54_common *priv = dev->priv;
2046         int err;
2047
2048         mutex_lock(&priv->conf_mutex);
2049         err = priv->open(dev);
2050         if (err)
2051                 goto out;
2052         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2053         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2054         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2055         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2056         err = p54_set_edcf(dev);
2057         if (err)
2058                 goto out;
2059
2060         memset(priv->bssid, ~0, ETH_ALEN);
2061         priv->mode = NL80211_IFTYPE_MONITOR;
2062         err = p54_setup_mac(dev);
2063         if (err) {
2064                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2065                 goto out;
2066         }
2067
2068         queue_delayed_work(dev->workqueue, &priv->work, 0);
2069
2070 out:
2071         mutex_unlock(&priv->conf_mutex);
2072         return err;
2073 }
2074
2075 static void p54_stop(struct ieee80211_hw *dev)
2076 {
2077         struct p54_common *priv = dev->priv;
2078         struct sk_buff *skb;
2079
2080         mutex_lock(&priv->conf_mutex);
2081         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2082         cancel_delayed_work_sync(&priv->work);
2083         if (priv->cached_beacon)
2084                 p54_tx_cancel(dev, priv->cached_beacon);
2085
2086         priv->stop(dev);
2087         while ((skb = skb_dequeue(&priv->tx_queue)))
2088                 kfree_skb(skb);
2089         priv->cached_beacon = NULL;
2090         priv->tsf_high32 = priv->tsf_low32 = 0;
2091         mutex_unlock(&priv->conf_mutex);
2092 }
2093
2094 static int p54_add_interface(struct ieee80211_hw *dev,
2095                              struct ieee80211_if_init_conf *conf)
2096 {
2097         struct p54_common *priv = dev->priv;
2098
2099         mutex_lock(&priv->conf_mutex);
2100         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2101                 mutex_unlock(&priv->conf_mutex);
2102                 return -EOPNOTSUPP;
2103         }
2104
2105         switch (conf->type) {
2106         case NL80211_IFTYPE_STATION:
2107         case NL80211_IFTYPE_ADHOC:
2108         case NL80211_IFTYPE_AP:
2109         case NL80211_IFTYPE_MESH_POINT:
2110                 priv->mode = conf->type;
2111                 break;
2112         default:
2113                 mutex_unlock(&priv->conf_mutex);
2114                 return -EOPNOTSUPP;
2115         }
2116
2117         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2118         p54_setup_mac(dev);
2119         p54_set_leds(dev, 1, 0, 0);
2120         mutex_unlock(&priv->conf_mutex);
2121         return 0;
2122 }
2123
2124 static void p54_remove_interface(struct ieee80211_hw *dev,
2125                                  struct ieee80211_if_init_conf *conf)
2126 {
2127         struct p54_common *priv = dev->priv;
2128
2129         mutex_lock(&priv->conf_mutex);
2130         if (priv->cached_beacon)
2131                 p54_tx_cancel(dev, priv->cached_beacon);
2132         priv->mode = NL80211_IFTYPE_MONITOR;
2133         memset(priv->mac_addr, 0, ETH_ALEN);
2134         memset(priv->bssid, 0, ETH_ALEN);
2135         p54_setup_mac(dev);
2136         mutex_unlock(&priv->conf_mutex);
2137 }
2138
2139 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2140 {
2141         int ret = 0;
2142         struct p54_common *priv = dev->priv;
2143         struct ieee80211_conf *conf = &dev->conf;
2144
2145         mutex_lock(&priv->conf_mutex);
2146         if (changed & IEEE80211_CONF_CHANGE_POWER)
2147                 priv->output_power = conf->power_level << 2;
2148         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2149                 ret = p54_setup_mac(dev);
2150                 if (ret)
2151                         goto out;
2152         }
2153         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2154                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2155                 if (ret)
2156                         goto out;
2157         }
2158         if (changed & IEEE80211_CONF_CHANGE_PS) {
2159                 ret = p54_set_ps(dev);
2160                 if (ret)
2161                         goto out;
2162         }
2163
2164 out:
2165         mutex_unlock(&priv->conf_mutex);
2166         return ret;
2167 }
2168
2169 static int p54_config_interface(struct ieee80211_hw *dev,
2170                                 struct ieee80211_vif *vif,
2171                                 struct ieee80211_if_conf *conf)
2172 {
2173         struct p54_common *priv = dev->priv;
2174         int ret = 0;
2175
2176         mutex_lock(&priv->conf_mutex);
2177         if (conf->changed & IEEE80211_IFCC_BSSID) {
2178                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2179                 ret = p54_setup_mac(dev);
2180                 if (ret)
2181                         goto out;
2182         }
2183
2184         if (conf->changed & IEEE80211_IFCC_BEACON) {
2185                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2186                 if (ret)
2187                         goto out;
2188                 ret = p54_setup_mac(dev);
2189                 if (ret)
2190                         goto out;
2191                 ret = p54_beacon_update(dev, vif);
2192                 if (ret)
2193                         goto out;
2194                 ret = p54_set_edcf(dev);
2195                 if (ret)
2196                         goto out;
2197         }
2198
2199         ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
2200
2201 out:
2202         mutex_unlock(&priv->conf_mutex);
2203         return ret;
2204 }
2205
2206 static void p54_configure_filter(struct ieee80211_hw *dev,
2207                                  unsigned int changed_flags,
2208                                  unsigned int *total_flags,
2209                                  int mc_count, struct dev_mc_list *mclist)
2210 {
2211         struct p54_common *priv = dev->priv;
2212
2213         *total_flags &= FIF_PROMISC_IN_BSS |
2214                         FIF_OTHER_BSS |
2215                         (*total_flags & FIF_PROMISC_IN_BSS) ?
2216                                 FIF_FCSFAIL : 0;
2217
2218         priv->filter_flags = *total_flags;
2219
2220         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2221                 p54_setup_mac(dev);
2222 }
2223
2224 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2225                        const struct ieee80211_tx_queue_params *params)
2226 {
2227         struct p54_common *priv = dev->priv;
2228         int ret;
2229
2230         mutex_lock(&priv->conf_mutex);
2231         if ((params) && !(queue > 4)) {
2232                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2233                         params->cw_min, params->cw_max, params->txop);
2234                 ret = p54_set_edcf(dev);
2235         } else
2236                 ret = -EINVAL;
2237         mutex_unlock(&priv->conf_mutex);
2238         return ret;
2239 }
2240
2241 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2242 {
2243         struct p54_common *priv = dev->priv;
2244         struct sk_buff *skb;
2245         struct p54_xbow_synth *xbow;
2246
2247         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2248                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2249         if (!skb)
2250                 return -ENOMEM;
2251
2252         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2253         xbow->magic1 = cpu_to_le16(0x1);
2254         xbow->magic2 = cpu_to_le16(0x2);
2255         xbow->freq = cpu_to_le16(5390);
2256         memset(xbow->padding, 0, sizeof(xbow->padding));
2257         priv->tx(dev, skb);
2258         return 0;
2259 }
2260
2261 static void p54_work(struct work_struct *work)
2262 {
2263         struct p54_common *priv = container_of(work, struct p54_common,
2264                                                work.work);
2265         struct ieee80211_hw *dev = priv->hw;
2266         struct sk_buff *skb;
2267
2268         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2269                 return ;
2270
2271         /*
2272          * TODO: walk through tx_queue and do the following tasks
2273          *      1. initiate bursts.
2274          *      2. cancel stuck frames / reset the device if necessary.
2275          */
2276
2277         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2278                             sizeof(struct p54_statistics),
2279                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2280         if (!skb)
2281                 return ;
2282
2283         priv->tx(dev, skb);
2284 }
2285
2286 static int p54_get_stats(struct ieee80211_hw *dev,
2287                          struct ieee80211_low_level_stats *stats)
2288 {
2289         struct p54_common *priv = dev->priv;
2290
2291         memcpy(stats, &priv->stats, sizeof(*stats));
2292         return 0;
2293 }
2294
2295 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2296                             struct ieee80211_tx_queue_stats *stats)
2297 {
2298         struct p54_common *priv = dev->priv;
2299
2300         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2301                sizeof(stats[0]) * dev->queues);
2302         return 0;
2303 }
2304
2305 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2306                                  struct ieee80211_vif *vif,
2307                                  struct ieee80211_bss_conf *info,
2308                                  u32 changed)
2309 {
2310         struct p54_common *priv = dev->priv;
2311
2312         if (changed & BSS_CHANGED_ERP_SLOT) {
2313                 priv->use_short_slot = info->use_short_slot;
2314                 p54_set_edcf(dev);
2315         }
2316         if (changed & BSS_CHANGED_BASIC_RATES) {
2317                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2318                         priv->basic_rate_mask = (info->basic_rates << 4);
2319                 else
2320                         priv->basic_rate_mask = info->basic_rates;
2321                 p54_setup_mac(dev);
2322                 if (priv->fw_var >= 0x500)
2323                         p54_scan(dev, P54_SCAN_EXIT, 0);
2324         }
2325         if (changed & BSS_CHANGED_ASSOC) {
2326                 if (info->assoc) {
2327                         priv->aid = info->aid;
2328                         priv->wakeup_timer = info->beacon_int *
2329                                              info->dtim_period * 5;
2330                         p54_setup_mac(dev);
2331                 }
2332         }
2333
2334 }
2335
2336 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2337                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2338                        struct ieee80211_key_conf *key)
2339 {
2340         struct p54_common *priv = dev->priv;
2341         struct sk_buff *skb;
2342         struct p54_keycache *rxkey;
2343         u8 algo = 0;
2344
2345         if (modparam_nohwcrypt)
2346                 return -EOPNOTSUPP;
2347
2348         if (cmd == DISABLE_KEY)
2349                 algo = 0;
2350         else {
2351                 switch (key->alg) {
2352                 case ALG_TKIP:
2353                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2354                               BR_DESC_PRIV_CAP_TKIP)))
2355                                 return -EOPNOTSUPP;
2356                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2357                         algo = P54_CRYPTO_TKIPMICHAEL;
2358                         break;
2359                 case ALG_WEP:
2360                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2361                                 return -EOPNOTSUPP;
2362                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2363                         algo = P54_CRYPTO_WEP;
2364                         break;
2365                 case ALG_CCMP:
2366                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2367                                 return -EOPNOTSUPP;
2368                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2369                         algo = P54_CRYPTO_AESCCMP;
2370                         break;
2371                 default:
2372                         return -EOPNOTSUPP;
2373                 }
2374         }
2375
2376         if (key->keyidx > priv->rx_keycache_size) {
2377                 /*
2378                  * The device supports the choosen algorithm, but the firmware
2379                  * does not provide enough key slots to store all of them.
2380                  * So, incoming frames have to be decoded by the mac80211 stack,
2381                  * but we can still offload encryption for outgoing frames.
2382                  */
2383
2384                 return 0;
2385         }
2386
2387         mutex_lock(&priv->conf_mutex);
2388         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2389                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_ATOMIC);
2390         if (!skb) {
2391                 mutex_unlock(&priv->conf_mutex);
2392                 return -ENOMEM;
2393         }
2394
2395         /* TODO: some devices have 4 more free slots for rx keys */
2396         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2397         rxkey->entry = key->keyidx;
2398         rxkey->key_id = key->keyidx;
2399         rxkey->key_type = algo;
2400         if (sta)
2401                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2402         else
2403                 memset(rxkey->mac, ~0, ETH_ALEN);
2404         if (key->alg != ALG_TKIP) {
2405                 rxkey->key_len = min((u8)16, key->keylen);
2406                 memcpy(rxkey->key, key->key, rxkey->key_len);
2407         } else {
2408                 rxkey->key_len = 24;
2409                 memcpy(rxkey->key, key->key, 16);
2410                 memcpy(&(rxkey->key[16]), &(key->key
2411                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2412         }
2413
2414         priv->tx(dev, skb);
2415         mutex_unlock(&priv->conf_mutex);
2416         return 0;
2417 }
2418
2419 static const struct ieee80211_ops p54_ops = {
2420         .tx                     = p54_tx,
2421         .start                  = p54_start,
2422         .stop                   = p54_stop,
2423         .add_interface          = p54_add_interface,
2424         .remove_interface       = p54_remove_interface,
2425         .set_tim                = p54_set_tim,
2426         .sta_notify             = p54_sta_notify,
2427         .set_key                = p54_set_key,
2428         .config                 = p54_config,
2429         .config_interface       = p54_config_interface,
2430         .bss_info_changed       = p54_bss_info_changed,
2431         .configure_filter       = p54_configure_filter,
2432         .conf_tx                = p54_conf_tx,
2433         .get_stats              = p54_get_stats,
2434         .get_tx_stats           = p54_get_tx_stats
2435 };
2436
2437 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2438 {
2439         struct ieee80211_hw *dev;
2440         struct p54_common *priv;
2441
2442         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2443         if (!dev)
2444                 return NULL;
2445
2446         priv = dev->priv;
2447         priv->hw = dev;
2448         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2449         priv->basic_rate_mask = 0x15f;
2450         skb_queue_head_init(&priv->tx_queue);
2451         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2452                      IEEE80211_HW_SIGNAL_DBM |
2453                      IEEE80211_HW_NOISE_DBM;
2454
2455         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2456                                       BIT(NL80211_IFTYPE_ADHOC) |
2457                                       BIT(NL80211_IFTYPE_AP) |
2458                                       BIT(NL80211_IFTYPE_MESH_POINT);
2459
2460         dev->channel_change_time = 1000;        /* TODO: find actual value */
2461         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2462         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2463         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2464         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2465         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2466         dev->queues = 1;
2467         priv->noise = -94;
2468         /*
2469          * We support at most 8 tries no matter which rate they're at,
2470          * we cannot support max_rates * max_rate_tries as we set it
2471          * here, but setting it correctly to 4/2 or so would limit us
2472          * artificially if the RC algorithm wants just two rates, so
2473          * let's say 4/7, we'll redistribute it at TX time, see the
2474          * comments there.
2475          */
2476         dev->max_rates = 4;
2477         dev->max_rate_tries = 7;
2478         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2479                                  sizeof(struct p54_tx_data);
2480
2481         mutex_init(&priv->conf_mutex);
2482         init_completion(&priv->eeprom_comp);
2483         INIT_DELAYED_WORK(&priv->work, p54_work);
2484
2485         return dev;
2486 }
2487 EXPORT_SYMBOL_GPL(p54_init_common);
2488
2489 void p54_free_common(struct ieee80211_hw *dev)
2490 {
2491         struct p54_common *priv = dev->priv;
2492         kfree(priv->iq_autocal);
2493         kfree(priv->output_limit);
2494         kfree(priv->curve_data);
2495 }
2496 EXPORT_SYMBOL_GPL(p54_free_common);
2497
2498 static int __init p54_init(void)
2499 {
2500         return 0;
2501 }
2502
2503 static void __exit p54_exit(void)
2504 {
2505 }
2506
2507 module_init(p54_init);
2508 module_exit(p54_exit);