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;
 853         unsigned long flags;
 854
 855         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 856         entry = priv->tx_queue.next;
 857         while (entry != (struct sk_buff *)&priv->tx_queue) {
 858                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 859
 860                 if (hdr->req_id == req_id) {
 861                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 862                         return entry;
 863                 }
 864                 entry = entry->next;
 865         }
 866         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 867         return NULL;
 868 }
 869
 870 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 871 {
 872         struct p54_common *priv = dev->priv;
 873         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 874         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 875         struct sk_buff *entry;
 876         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 877         struct p54_tx_info *range = NULL;
 878         u32 freed = 0;
 879         u32 last_addr = priv->rx_start;
 880         unsigned long flags;
 881         int count, idx;
 882
 883         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 884         entry = (struct sk_buff *) priv->tx_queue.next;
 885         while (entry != (struct sk_buff *)&priv->tx_queue) {
 886                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 887                 struct p54_hdr *entry_hdr;
 888                 struct p54_tx_data *entry_data;
 889                 unsigned int pad = 0, frame_len;
 890
 891                 range = (void *)info->rate_driver_data;
 892                 if (range->start_addr != addr) {
 893                         last_addr = range->end_addr;
 894                         entry = entry->next;
 895                         continue;
 896                 }
 897
 898                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 899                         struct ieee80211_tx_info *ni;
 900                         struct p54_tx_info *mr;
 901
 902                         ni = IEEE80211_SKB_CB(entry->next);
 903                         mr = (struct p54_tx_info *)ni->rate_driver_data;
 904                         freed = mr->start_addr - last_addr;
 905                 } else
 906                         freed = priv->rx_end - last_addr;
 907
 908                 last_addr = range->end_addr;
 909                 __skb_unlink(entry, &priv->tx_queue);
 910                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 911
 912                 frame_len = entry->len;
 913                 entry_hdr = (struct p54_hdr *) entry->data;
 914                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 915                 priv->tx_stats[entry_data->hw_queue].len--;
 916                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 917
 918                 /*
 919                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 920                  * generated by the driver. Therefore tx_status is bogus
 921                  * and we don't want to confuse the mac80211 stack.
 922                  */
 923                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 924                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 925                                 priv->cached_beacon = NULL;
 926
 927                         kfree_skb(entry);
 928                         goto out;
 929                 }
 930
 931                 /*
 932                  * Clear manually, ieee80211_tx_info_clear_status would
 933                  * clear the counts too and we need them.
 934                  */
 935                 memset(&info->status.ampdu_ack_len, 0,
 936                        sizeof(struct ieee80211_tx_info) -
 937                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 938                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 939                                       status.ampdu_ack_len) != 23);
 940
 941                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 942                         pad = entry_data->align[0];
 943
 944                 /* walk through the rates array and adjust the counts */
 945                 count = payload->tries;
 946                 for (idx = 0; idx < 4; idx++) {
 947                         if (count >= info->status.rates[idx].count) {
 948                                 count -= info->status.rates[idx].count;
 949                         } else if (count > 0) {
 950                                 info->status.rates[idx].count = count;
 951                                 count = 0;
 952                         } else {
 953                                 info->status.rates[idx].idx = -1;
 954                                 info->status.rates[idx].count = 0;
 955                         }
 956                 }
 957
 958                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 959                      (!payload->status))
 960                         info->flags |= IEEE80211_TX_STAT_ACK;
 961                 if (payload->status & P54_TX_PSM_CANCELLED)
 962                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 963                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 964                                 (int)payload->ack_rssi);
 965
 966                 /* Undo all changes to the frame. */
 967                 switch (entry_data->key_type) {
 968                 case P54_CRYPTO_TKIPMICHAEL: {
 969                         u8 *iv = (u8 *)(entry_data->align + pad +
 970                                         entry_data->crypt_offset);
 971
 972                         /* Restore the original TKIP IV. */
 973                         iv[2] = iv[0];
 974                         iv[0] = iv[1];
 975                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 976
 977                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 978                         break;
 979                         }
 980                 case P54_CRYPTO_AESCCMP:
 981                         frame_len -= 8; /* remove CCMP_MIC */
 982                         break;
 983                 case P54_CRYPTO_WEP:
 984                         frame_len -= 4; /* remove WEP_ICV */
 985                         break;
 986                 }
 987                 skb_trim(entry, frame_len);
 988                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 989                 ieee80211_tx_status_irqsafe(dev, entry);
 990                 goto out;
 991         }
 992         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 993
 994 out:
 995         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 996                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 997                 p54_wake_free_queues(dev);
 998 }
 999
1000 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
1001                                    struct sk_buff *skb)
1002 {
1003         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1004         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
1005         struct p54_common *priv = dev->priv;
1006
1007         if (!priv->eeprom)
1008                 return ;
1009
1010         if (priv->fw_var >= 0x509) {
1011                 memcpy(priv->eeprom, eeprom->v2.data,
1012                        le16_to_cpu(eeprom->v2.len));
1013         } else {
1014                 memcpy(priv->eeprom, eeprom->v1.data,
1015                        le16_to_cpu(eeprom->v1.len));
1016         }
1017
1018         complete(&priv->eeprom_comp);
1019 }
1020
1021 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
1022 {
1023         struct p54_common *priv = dev->priv;
1024         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1025         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
1026         u32 tsf32;
1027
1028         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
1029                 return ;
1030
1031         tsf32 = le32_to_cpu(stats->tsf32);
1032         if (tsf32 < priv->tsf_low32)
1033                 priv->tsf_high32++;
1034         priv->tsf_low32 = tsf32;
1035
1036         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
1037         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
1038         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
1039
1040         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
1041
1042         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
1043 }
1044
1045 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
1046 {
1047         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1048         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1049         u16 event = le16_to_cpu(trap->event);
1050         u16 freq = le16_to_cpu(trap->frequency);
1051
1052         switch (event) {
1053         case P54_TRAP_BEACON_TX:
1054                 break;
1055         case P54_TRAP_RADAR:
1056                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1057                         wiphy_name(dev->wiphy), freq);
1058                 break;
1059         case P54_TRAP_NO_BEACON:
1060                 break;
1061         case P54_TRAP_SCAN:
1062                 break;
1063         case P54_TRAP_TBTT:
1064                 break;
1065         case P54_TRAP_TIMER:
1066                 break;
1067         default:
1068                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1069                        wiphy_name(dev->wiphy), event, freq);
1070                 break;
1071         }
1072 }
1073
1074 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1075 {
1076         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1077
1078         switch (le16_to_cpu(hdr->type)) {
1079         case P54_CONTROL_TYPE_TXDONE:
1080                 p54_rx_frame_sent(dev, skb);
1081                 break;
1082         case P54_CONTROL_TYPE_TRAP:
1083                 p54_rx_trap(dev, skb);
1084                 break;
1085         case P54_CONTROL_TYPE_BBP:
1086                 break;
1087         case P54_CONTROL_TYPE_STAT_READBACK:
1088                 p54_rx_stats(dev, skb);
1089                 break;
1090         case P54_CONTROL_TYPE_EEPROM_READBACK:
1091                 p54_rx_eeprom_readback(dev, skb);
1092                 break;
1093         default:
1094                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1095                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1096                 break;
1097         }
1098
1099         return 0;
1100 }
1101
1102 /* returns zero if skb can be reused */
1103 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1104 {
1105         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1106
1107         if (type & P54_HDR_FLAG_CONTROL)
1108                 return p54_rx_control(dev, skb);
1109         else
1110                 return p54_rx_data(dev, skb);
1111 }
1112 EXPORT_SYMBOL_GPL(p54_rx);
1113
1114 /*
1115  * So, the firmware is somewhat stupid and doesn't know what places in its
1116  * memory incoming data should go to. By poking around in the firmware, we
1117  * can find some unused memory to upload our packets to. However, data that we
1118  * want the card to TX needs to stay intact until the card has told us that
1119  * it is done with it. This function finds empty places we can upload to and
1120  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1121  * p54_free_skb frees allocated areas.
1122  */
1123 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1124                                struct p54_hdr *data, u32 len)
1125 {
1126         struct p54_common *priv = dev->priv;
1127         struct sk_buff *entry;
1128         struct sk_buff *target_skb = NULL;
1129         struct ieee80211_tx_info *info;
1130         struct p54_tx_info *range;
1131         u32 last_addr = priv->rx_start;
1132         u32 largest_hole = 0;
1133         u32 target_addr = priv->rx_start;
1134         unsigned long flags;
1135         unsigned int left;
1136         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1137
1138         if (!skb)
1139                 return -EINVAL;
1140
1141         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1142
1143         left = skb_queue_len(&priv->tx_queue);
1144         if (unlikely(left >= 28)) {
1145                 /*
1146                  * The tx_queue is nearly full!
1147                  * We have throttle normal data traffic, because we must
1148                  * have a few spare slots for control frames left.
1149                  */
1150                 ieee80211_stop_queues(dev);
1151                 queue_delayed_work(dev->workqueue, &priv->work,
1152                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1153
1154                 if (unlikely(left == 32)) {
1155                         /*
1156                          * The tx_queue is now really full.
1157                          *
1158                          * TODO: check if the device has crashed and reset it.
1159                          */
1160                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1161                         return -ENOSPC;
1162                 }
1163         }
1164
1165         entry = priv->tx_queue.next;
1166         while (left--) {
1167                 u32 hole_size;
1168                 info = IEEE80211_SKB_CB(entry);
1169                 range = (void *)info->rate_driver_data;
1170                 hole_size = range->start_addr - last_addr;
1171                 if (!target_skb && hole_size >= len) {
1172                         target_skb = entry->prev;
1173                         hole_size -= len;
1174                         target_addr = last_addr;
1175                 }
1176                 largest_hole = max(largest_hole, hole_size);
1177                 last_addr = range->end_addr;
1178                 entry = entry->next;
1179         }
1180         if (!target_skb && priv->rx_end - last_addr >= len) {
1181                 target_skb = priv->tx_queue.prev;
1182                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1183                 if (!skb_queue_empty(&priv->tx_queue)) {
1184                         info = IEEE80211_SKB_CB(target_skb);
1185                         range = (void *)info->rate_driver_data;
1186                         target_addr = range->end_addr;
1187                 }
1188         } else
1189                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1190
1191         if (!target_skb) {
1192                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1193                 ieee80211_stop_queues(dev);
1194                 return -ENOSPC;
1195         }
1196
1197         info = IEEE80211_SKB_CB(skb);
1198         range = (void *)info->rate_driver_data;
1199         range->start_addr = target_addr;
1200         range->end_addr = target_addr + len;
1201         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1202         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1203
1204         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1205                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1206                 ieee80211_stop_queues(dev);
1207
1208         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1209         return 0;
1210 }
1211
1212 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1213                                      u16 payload_len, u16 type, gfp_t memflags)
1214 {
1215         struct p54_common *priv = dev->priv;
1216         struct p54_hdr *hdr;
1217         struct sk_buff *skb;
1218         size_t frame_len = sizeof(*hdr) + payload_len;
1219
1220         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1221                 return NULL;
1222
1223         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1224         if (!skb)
1225                 return NULL;
1226         skb_reserve(skb, priv->tx_hdr_len);
1227
1228         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1229         hdr->flags = cpu_to_le16(hdr_flags);
1230         hdr->len = cpu_to_le16(payload_len);
1231         hdr->type = cpu_to_le16(type);
1232         hdr->tries = hdr->rts_tries = 0;
1233
1234         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1235                 kfree_skb(skb);
1236                 return NULL;
1237         }
1238         return skb;
1239 }
1240
1241 int p54_read_eeprom(struct ieee80211_hw *dev)
1242 {
1243         struct p54_common *priv = dev->priv;
1244         struct p54_eeprom_lm86 *eeprom_hdr;
1245         struct sk_buff *skb;
1246         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1247         int ret = -ENOMEM;
1248         void *eeprom = NULL;
1249
1250         maxblocksize = EEPROM_READBACK_LEN;
1251         if (priv->fw_var >= 0x509)
1252                 maxblocksize -= 0xc;
1253         else
1254                 maxblocksize -= 0x4;
1255
1256         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1257                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1258                             GFP_KERNEL);
1259         if (!skb)
1260                 goto free;
1261         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1262         if (!priv->eeprom)
1263                 goto free;
1264         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1265         if (!eeprom)
1266                 goto free;
1267
1268         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1269                      sizeof(*eeprom_hdr) + maxblocksize);
1270
1271         while (eeprom_size) {
1272                 blocksize = min(eeprom_size, maxblocksize);
1273                 if (priv->fw_var < 0x509) {
1274                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1275                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1276                 } else {
1277                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1278                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1279                         eeprom_hdr->v2.magic2 = 0xf;
1280                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1281                 }
1282                 priv->tx(dev, skb);
1283
1284                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1285                         printk(KERN_ERR "%s: device does not respond!\n",
1286                                 wiphy_name(dev->wiphy));
1287                         ret = -EBUSY;
1288                         goto free;
1289                 }
1290
1291                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1292                 offset += blocksize;
1293                 eeprom_size -= blocksize;
1294         }
1295
1296         ret = p54_parse_eeprom(dev, eeprom, offset);
1297 free:
1298         kfree(priv->eeprom);
1299         priv->eeprom = NULL;
1300         p54_free_skb(dev, skb);
1301         kfree(eeprom);
1302
1303         return ret;
1304 }
1305 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1306
1307 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1308                 bool set)
1309 {
1310         struct p54_common *priv = dev->priv;
1311         struct sk_buff *skb;
1312         struct p54_tim *tim;
1313
1314         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1315                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1316         if (!skb)
1317                 return -ENOMEM;
1318
1319         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1320         tim->count = 1;
1321         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1322         priv->tx(dev, skb);
1323         return 0;
1324 }
1325
1326 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1327 {
1328         struct p54_common *priv = dev->priv;
1329         struct sk_buff *skb;
1330         struct p54_sta_unlock *sta;
1331
1332         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1333                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1334         if (!skb)
1335                 return -ENOMEM;
1336
1337         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1338         memcpy(sta->addr, addr, ETH_ALEN);
1339         priv->tx(dev, skb);
1340         return 0;
1341 }
1342
1343 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1344                               enum sta_notify_cmd notify_cmd,
1345                               struct ieee80211_sta *sta)
1346 {
1347         switch (notify_cmd) {
1348         case STA_NOTIFY_ADD:
1349         case STA_NOTIFY_REMOVE:
1350                 /*
1351                  * Notify the firmware that we don't want or we don't
1352                  * need to buffer frames for this station anymore.
1353                  */
1354
1355                 p54_sta_unlock(dev, sta->addr);
1356                 break;
1357         case STA_NOTIFY_AWAKE:
1358                 /* update the firmware's filter table */
1359                 p54_sta_unlock(dev, sta->addr);
1360                 break;
1361         default:
1362                 break;
1363         }
1364 }
1365
1366 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1367 {
1368         struct p54_common *priv = dev->priv;
1369         struct sk_buff *skb;
1370         struct p54_hdr *hdr;
1371         struct p54_txcancel *cancel;
1372
1373         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1374                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1375         if (!skb)
1376                 return -ENOMEM;
1377
1378         hdr = (void *)entry->data;
1379         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1380         cancel->req_id = hdr->req_id;
1381         priv->tx(dev, skb);
1382         return 0;
1383 }
1384
1385 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1386                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1387                 u16 *flags, u16 *aid)
1388 {
1389         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1390         struct p54_common *priv = dev->priv;
1391         int ret = 1;
1392
1393         switch (priv->mode) {
1394         case NL80211_IFTYPE_MONITOR:
1395                 /*
1396                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1397                  * every frame in promiscuous/monitor mode.
1398                  * see STSW45x0C LMAC API - page 12.
1399                  */
1400                 *aid = 0;
1401                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1402                 *queue += P54_QUEUE_DATA;
1403                 break;
1404         case NL80211_IFTYPE_STATION:
1405                 *aid = 1;
1406                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1407                         *queue = P54_QUEUE_MGMT;
1408                         ret = 0;
1409                 } else
1410                         *queue += P54_QUEUE_DATA;
1411                 break;
1412         case NL80211_IFTYPE_AP:
1413         case NL80211_IFTYPE_ADHOC:
1414         case NL80211_IFTYPE_MESH_POINT:
1415                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1416                         *aid = 0;
1417                         *queue = P54_QUEUE_CAB;
1418                         return 0;
1419                 }
1420
1421                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1422                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1423                                 *aid = 0;
1424                                 *queue = P54_QUEUE_MGMT;
1425                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1426                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1427                                 return 0;
1428                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1429                                 *aid = 0;
1430
1431                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1432                                         /*
1433                                          * Injecting beacons on top of a AP is
1434                                          * not a good idea... nevertheless,
1435                                          * it should be doable.
1436                                          */
1437
1438                                         *queue += P54_QUEUE_DATA;
1439                                         return 1;
1440                                 }
1441
1442                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1443                                 *queue = P54_QUEUE_BEACON;
1444                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1445                                 return 0;
1446                         } else {
1447                                 *queue = P54_QUEUE_MGMT;
1448                                 ret = 0;
1449                         }
1450                 } else
1451                         *queue += P54_QUEUE_DATA;
1452
1453                 if (info->control.sta)
1454                         *aid = info->control.sta->aid;
1455                 else
1456                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1457                 break;
1458         }
1459         return ret;
1460 }
1461
1462 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1463 {
1464         switch (alg) {
1465         case ALG_WEP:
1466                 return P54_CRYPTO_WEP;
1467         case ALG_TKIP:
1468                 return P54_CRYPTO_TKIPMICHAEL;
1469         case ALG_CCMP:
1470                 return P54_CRYPTO_AESCCMP;
1471         default:
1472                 return 0;
1473         }
1474 }
1475
1476 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1477 {
1478         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1479         struct ieee80211_tx_queue_stats *current_queue;
1480         struct p54_common *priv = dev->priv;
1481         struct p54_hdr *hdr;
1482         struct p54_tx_data *txhdr;
1483         size_t padding, len, tim_len = 0;
1484         int i, j, ridx, ret;
1485         u16 hdr_flags = 0, aid = 0;
1486         u8 rate, queue, crypt_offset = 0;
1487         u8 cts_rate = 0x20;
1488         u8 rc_flags;
1489         u8 calculated_tries[4];
1490         u8 nrates = 0, nremaining = 8;
1491
1492         queue = skb_get_queue_mapping(skb);
1493
1494         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1495         current_queue = &priv->tx_stats[queue];
1496         if (unlikely((current_queue->len > current_queue->limit) && ret))
1497                 return NETDEV_TX_BUSY;
1498         current_queue->len++;
1499         current_queue->count++;
1500         if ((current_queue->len == current_queue->limit) && ret)
1501                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1502
1503         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1504         len = skb->len;
1505
1506         if (info->control.hw_key) {
1507                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1508                 if (info->control.hw_key->alg == ALG_TKIP) {
1509                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1510                         /*
1511                          * The firmware excepts that the IV has to have
1512                          * this special format
1513                          */
1514                         iv[1] = iv[0];
1515                         iv[0] = iv[2];
1516                         iv[2] = 0;
1517                 }
1518         }
1519
1520         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1521         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1522
1523         if (padding)
1524                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1525         hdr->type = cpu_to_le16(aid);
1526         hdr->rts_tries = info->control.rates[0].count;
1527
1528         /*
1529          * we register the rates in perfect order, and
1530          * RTS/CTS won't happen on 5 GHz
1531          */
1532         cts_rate = info->control.rts_cts_rate_idx;
1533
1534         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1535
1536         /* see how many rates got used */
1537         for (i = 0; i < 4; i++) {
1538                 if (info->control.rates[i].idx < 0)
1539                         break;
1540                 nrates++;
1541         }
1542
1543         /* limit tries to 8/nrates per rate */
1544         for (i = 0; i < nrates; i++) {
1545                 /*
1546                  * The magic expression here is equivalent to 8/nrates for
1547                  * all values that matter, but avoids division and jumps.
1548                  * Note that nrates can only take the values 1 through 4.
1549                  */
1550                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1551                                                  info->control.rates[i].count);
1552                 nremaining -= calculated_tries[i];
1553         }
1554
1555         /* if there are tries left, distribute from back to front */
1556         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1557                 int tmp = info->control.rates[i].count - calculated_tries[i];
1558
1559                 if (tmp <= 0)
1560                         continue;
1561                 /* RC requested more tries at this rate */
1562
1563                 tmp = min_t(int, tmp, nremaining);
1564                 calculated_tries[i] += tmp;
1565                 nremaining -= tmp;
1566         }
1567
1568         ridx = 0;
1569         for (i = 0; i < nrates && ridx < 8; i++) {
1570                 /* we register the rates in perfect order */
1571                 rate = info->control.rates[i].idx;
1572                 if (info->band == IEEE80211_BAND_5GHZ)
1573                         rate += 4;
1574
1575                 /* store the count we actually calculated for TX status */
1576                 info->control.rates[i].count = calculated_tries[i];
1577
1578                 rc_flags = info->control.rates[i].flags;
1579                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1580                         rate |= 0x10;
1581                         cts_rate |= 0x10;
1582                 }
1583                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1584                         rate |= 0x40;
1585                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1586                         rate |= 0x20;
1587                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1588                         txhdr->rateset[ridx] = rate;
1589                         ridx++;
1590                 }
1591         }
1592
1593         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1594                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1595
1596         /* TODO: enable bursting */
1597         hdr->flags = cpu_to_le16(hdr_flags);
1598         hdr->tries = ridx;
1599         txhdr->rts_rate_idx = 0;
1600         if (info->control.hw_key) {
1601                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1602                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1603                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1604                 if (info->control.hw_key->alg == ALG_TKIP) {
1605                         if (unlikely(skb_tailroom(skb) < 12))
1606                                 goto err;
1607                         /* reserve space for the MIC key */
1608                         len += 8;
1609                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1610                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1611                 }
1612                 /* reserve some space for ICV */
1613                 len += info->control.hw_key->icv_len;
1614                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1615                        info->control.hw_key->icv_len);
1616         } else {
1617                 txhdr->key_type = 0;
1618                 txhdr->key_len = 0;
1619         }
1620         txhdr->crypt_offset = crypt_offset;
1621         txhdr->hw_queue = queue;
1622         txhdr->backlog = current_queue->len;
1623         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1624         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1625                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1626         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1627                 txhdr->longbow.cts_rate = cts_rate;
1628                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1629         } else {
1630                 txhdr->normal.output_power = priv->output_power;
1631                 txhdr->normal.cts_rate = cts_rate;
1632         }
1633         if (padding)
1634                 txhdr->align[0] = padding;
1635
1636         hdr->len = cpu_to_le16(len);
1637         /* modifies skb->cb and with it info, so must be last! */
1638         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1639                 goto err;
1640         priv->tx(dev, skb);
1641
1642         queue_delayed_work(dev->workqueue, &priv->work,
1643                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1644
1645         return NETDEV_TX_OK;
1646
1647  err:
1648         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1649         current_queue->len--;
1650         current_queue->count--;
1651         return NETDEV_TX_BUSY;
1652 }
1653
1654 static int p54_setup_mac(struct ieee80211_hw *dev)
1655 {
1656         struct p54_common *priv = dev->priv;
1657         struct sk_buff *skb;
1658         struct p54_setup_mac *setup;
1659         u16 mode;
1660
1661         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1662                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1663         if (!skb)
1664                 return -ENOMEM;
1665
1666         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1667         if (dev->conf.radio_enabled) {
1668                 switch (priv->mode) {
1669                 case NL80211_IFTYPE_STATION:
1670                         mode = P54_FILTER_TYPE_STATION;
1671                         break;
1672                 case NL80211_IFTYPE_AP:
1673                         mode = P54_FILTER_TYPE_AP;
1674                         break;
1675                 case NL80211_IFTYPE_ADHOC:
1676                 case NL80211_IFTYPE_MESH_POINT:
1677                         mode = P54_FILTER_TYPE_IBSS;
1678                         break;
1679                 case NL80211_IFTYPE_MONITOR:
1680                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1681                         break;
1682                 default:
1683                         mode = P54_FILTER_TYPE_NONE;
1684                         break;
1685                 }
1686
1687                 /*
1688                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1689                  * STSW45X0C LMAC API - page 12
1690                  */
1691                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1692                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1693                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1694                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1695         } else
1696                 mode = P54_FILTER_TYPE_RX_DISABLED;
1697
1698         setup->mac_mode = cpu_to_le16(mode);
1699         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1700         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1701         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1702         setup->rx_align = 0;
1703         if (priv->fw_var < 0x500) {
1704                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1705                 memset(setup->v1.rts_rates, 0, 8);
1706                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1707                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1708                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1709                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1710                 setup->v1.unalloc0 = cpu_to_le16(0);
1711         } else {
1712                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1713                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1714                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1715                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1716                 setup->v2.truncate = cpu_to_le16(48896);
1717                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1718                 setup->v2.sbss_offset = 0;
1719                 setup->v2.mcast_window = 0;
1720                 setup->v2.rx_rssi_threshold = 0;
1721                 setup->v2.rx_ed_threshold = 0;
1722                 setup->v2.ref_clock = cpu_to_le32(644245094);
1723                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1724                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1725         }
1726         priv->tx(dev, skb);
1727         return 0;
1728 }
1729
1730 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1731 {
1732         struct p54_common *priv = dev->priv;
1733         struct sk_buff *skb;
1734         struct p54_hdr *hdr;
1735         struct p54_scan_head *head;
1736         struct p54_iq_autocal_entry *iq_autocal;
1737         union p54_scan_body_union *body;
1738         struct p54_scan_tail_rate *rate;
1739         struct pda_rssi_cal_entry *rssi;
1740         unsigned int i;
1741         void *entry;
1742         int band = dev->conf.channel->band;
1743         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1744
1745         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1746                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1747                             sizeof(*rate) + 2 * sizeof(*rssi),
1748                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1749         if (!skb)
1750                 return -ENOMEM;
1751
1752         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1753         memset(head->scan_params, 0, sizeof(head->scan_params));
1754         head->mode = cpu_to_le16(mode);
1755         head->dwell = cpu_to_le16(dwell);
1756         head->freq = freq;
1757
1758         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1759                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1760                 *pa_power_points = cpu_to_le16(0x0c);
1761         }
1762
1763         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1764         for (i = 0; i < priv->iq_autocal_len; i++) {
1765                 if (priv->iq_autocal[i].freq != freq)
1766                         continue;
1767
1768                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1769                        sizeof(struct p54_iq_autocal_entry));
1770                 break;
1771         }
1772         if (i == priv->iq_autocal_len)
1773                 goto err;
1774
1775         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1776                 body = (void *) skb_put(skb, sizeof(body->longbow));
1777         else
1778                 body = (void *) skb_put(skb, sizeof(body->normal));
1779
1780         for (i = 0; i < priv->output_limit->entries; i++) {
1781                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1782                                      priv->output_limit->entry_size * i);
1783
1784                 if (*entry_freq != freq)
1785                         continue;
1786
1787                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1788                         memcpy(&body->longbow.power_limits,
1789                                (void *) entry_freq + sizeof(__le16),
1790                                priv->output_limit->entry_size);
1791                 } else {
1792                         struct pda_channel_output_limit *limits =
1793                                (void *) entry_freq;
1794
1795                         body->normal.val_barker = 0x38;
1796                         body->normal.val_bpsk = body->normal.dup_bpsk =
1797                                 limits->val_bpsk;
1798                         body->normal.val_qpsk = body->normal.dup_qpsk =
1799                                 limits->val_qpsk;
1800                         body->normal.val_16qam = body->normal.dup_16qam =
1801                                 limits->val_16qam;
1802                         body->normal.val_64qam = body->normal.dup_64qam =
1803                                 limits->val_64qam;
1804                 }
1805                 break;
1806         }
1807         if (i == priv->output_limit->entries)
1808                 goto err;
1809
1810         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1811         for (i = 0; i < priv->curve_data->entries; i++) {
1812                 if (*((__le16 *)entry) != freq) {
1813                         entry += priv->curve_data->entry_size;
1814                         continue;
1815                 }
1816
1817                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1818                         memcpy(&body->longbow.curve_data,
1819                                 (void *) entry + sizeof(__le16),
1820                                 priv->curve_data->entry_size);
1821                 } else {
1822                         struct p54_scan_body *chan = &body->normal;
1823                         struct pda_pa_curve_data *curve_data =
1824                                 (void *) priv->curve_data->data;
1825
1826                         entry += sizeof(__le16);
1827                         chan->pa_points_per_curve = 8;
1828                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1829                         memcpy(chan->curve_data, entry,
1830                                sizeof(struct p54_pa_curve_data_sample) *
1831                                min((u8)8, curve_data->points_per_channel));
1832                 }
1833                 break;
1834         }
1835         if (i == priv->curve_data->entries)
1836                 goto err;
1837
1838         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1839                 rate = (void *) skb_put(skb, sizeof(*rate));
1840                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1841                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1842                         rate->rts_rates[i] = i;
1843         }
1844
1845         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1846         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1847         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1848         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1849                 /* Longbow frontend needs ever more */
1850                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1851                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1852                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1853         }
1854
1855         if (priv->fw_var >= 0x509) {
1856                 rate = (void *) skb_put(skb, sizeof(*rate));
1857                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1858                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1859                         rate->rts_rates[i] = i;
1860         }
1861
1862         hdr = (struct p54_hdr *) skb->data;
1863         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1864
1865         priv->tx(dev, skb);
1866         return 0;
1867
1868  err:
1869         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1870         p54_free_skb(dev, skb);
1871         return -EINVAL;
1872 }
1873
1874 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1875 {
1876         struct p54_common *priv = dev->priv;
1877         struct sk_buff *skb;
1878         struct p54_led *led;
1879
1880         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1881                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1882         if (!skb)
1883                 return -ENOMEM;
1884
1885         led = (struct p54_led *)skb_put(skb, sizeof(*led));
1886         led->mode = cpu_to_le16(mode);
1887         led->led_permanent = cpu_to_le16(link);
1888         led->led_temporary = cpu_to_le16(act);
1889         led->duration = cpu_to_le16(1000);
1890         priv->tx(dev, skb);
1891         return 0;
1892 }
1893
1894 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1895 do {                                                            \
1896         queue.aifs = cpu_to_le16(ai_fs);                        \
1897         queue.cwmin = cpu_to_le16(cw_min);                      \
1898         queue.cwmax = cpu_to_le16(cw_max);                      \
1899         queue.txop = cpu_to_le16(_txop);                        \
1900 } while(0)
1901
1902 static int p54_set_edcf(struct ieee80211_hw *dev)
1903 {
1904         struct p54_common *priv = dev->priv;
1905         struct sk_buff *skb;
1906         struct p54_edcf *edcf;
1907
1908         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1909                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1910         if (!skb)
1911                 return -ENOMEM;
1912
1913         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1914         if (priv->use_short_slot) {
1915                 edcf->slottime = 9;
1916                 edcf->sifs = 0x10;
1917                 edcf->eofpad = 0x00;
1918         } else {
1919                 edcf->slottime = 20;
1920                 edcf->sifs = 0x0a;
1921                 edcf->eofpad = 0x06;
1922         }
1923         /* (see prism54/isl_oid.h for further details) */
1924         edcf->frameburst = cpu_to_le16(0);
1925         edcf->round_trip_delay = cpu_to_le16(0);
1926         edcf->flags = 0;
1927         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1928         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1929         priv->tx(dev, skb);
1930         return 0;
1931 }
1932
1933 static int p54_set_ps(struct ieee80211_hw *dev)
1934 {
1935         struct p54_common *priv = dev->priv;
1936         struct sk_buff *skb;
1937         struct p54_psm *psm;
1938         u16 mode;
1939         int i;
1940
1941         if (dev->conf.flags & IEEE80211_CONF_PS)
1942                 mode = P54_PSM | P54_PSM_DTIM | P54_PSM_MCBC;
1943         else
1944                 mode = P54_PSM_CAM;
1945
1946         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1947                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1948         if (!skb)
1949                 return -ENOMEM;
1950
1951         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1952         psm->mode = cpu_to_le16(mode);
1953         psm->aid = cpu_to_le16(priv->aid);
1954         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1955                 psm->intervals[i].interval =
1956                         cpu_to_le16(dev->conf.listen_interval);
1957                 psm->intervals[i].periods = cpu_to_le16(1);
1958         }
1959
1960         psm->beacon_rssi_skip_max = 60;
1961         psm->rssi_delta_threshold = 0;
1962         psm->nr = 0;
1963
1964         priv->tx(dev, skb);
1965
1966         return 0;
1967 }
1968
1969 static int p54_beacon_tim(struct sk_buff *skb)
1970 {
1971         /*
1972          * the good excuse for this mess is ... the firmware.
1973          * The dummy TIM MUST be at the end of the beacon frame,
1974          * because it'll be overwritten!
1975          */
1976
1977         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1978         u8 *pos, *end;
1979
1980         if (skb->len <= sizeof(mgmt))
1981                 return -EINVAL;
1982
1983         pos = (u8 *)mgmt->u.beacon.variable;
1984         end = skb->data + skb->len;
1985         while (pos < end) {
1986                 if (pos + 2 + pos[1] > end)
1987                         return -EINVAL;
1988
1989                 if (pos[0] == WLAN_EID_TIM) {
1990                         u8 dtim_len = pos[1];
1991                         u8 dtim_period = pos[3];
1992                         u8 *next = pos + 2 + dtim_len;
1993
1994                         if (dtim_len < 3)
1995                                 return -EINVAL;
1996
1997                         memmove(pos, next, end - next);
1998
1999                         if (dtim_len > 3)
2000                                 skb_trim(skb, skb->len - (dtim_len - 3));
2001
2002                         pos = end - (dtim_len + 2);
2003
2004                         /* add the dummy at the end */
2005                         pos[0] = WLAN_EID_TIM;
2006                         pos[1] = 3;
2007                         pos[2] = 0;
2008                         pos[3] = dtim_period;
2009                         pos[4] = 0;
2010                         return 0;
2011                 }
2012                 pos += 2 + pos[1];
2013         }
2014         return 0;
2015 }
2016
2017 static int p54_beacon_update(struct ieee80211_hw *dev,
2018                         struct ieee80211_vif *vif)
2019 {
2020         struct p54_common *priv = dev->priv;
2021         struct sk_buff *beacon;
2022         int ret;
2023
2024         if (priv->cached_beacon) {
2025                 p54_tx_cancel(dev, priv->cached_beacon);
2026                 /* wait for the last beacon the be freed */
2027                 msleep(10);
2028         }
2029
2030         beacon = ieee80211_beacon_get(dev, vif);
2031         if (!beacon)
2032                 return -ENOMEM;
2033         ret = p54_beacon_tim(beacon);
2034         if (ret)
2035                 return ret;
2036         ret = p54_tx(dev, beacon);
2037         if (ret)
2038                 return ret;
2039         priv->cached_beacon = beacon;
2040         priv->tsf_high32 = 0;
2041         priv->tsf_low32 = 0;
2042
2043         return 0;
2044 }
2045
2046 static int p54_start(struct ieee80211_hw *dev)
2047 {
2048         struct p54_common *priv = dev->priv;
2049         int err;
2050
2051         mutex_lock(&priv->conf_mutex);
2052         err = priv->open(dev);
2053         if (err)
2054                 goto out;
2055         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2056         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2057         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2058         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2059         err = p54_set_edcf(dev);
2060         if (err)
2061                 goto out;
2062
2063         memset(priv->bssid, ~0, ETH_ALEN);
2064         priv->mode = NL80211_IFTYPE_MONITOR;
2065         err = p54_setup_mac(dev);
2066         if (err) {
2067                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2068                 goto out;
2069         }
2070
2071         queue_delayed_work(dev->workqueue, &priv->work, 0);
2072
2073 out:
2074         mutex_unlock(&priv->conf_mutex);
2075         return err;
2076 }
2077
2078 static void p54_stop(struct ieee80211_hw *dev)
2079 {
2080         struct p54_common *priv = dev->priv;
2081         struct sk_buff *skb;
2082
2083         mutex_lock(&priv->conf_mutex);
2084         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2085         cancel_delayed_work_sync(&priv->work);
2086         if (priv->cached_beacon)
2087                 p54_tx_cancel(dev, priv->cached_beacon);
2088
2089         priv->stop(dev);
2090         while ((skb = skb_dequeue(&priv->tx_queue)))
2091                 kfree_skb(skb);
2092         priv->cached_beacon = NULL;
2093         priv->tsf_high32 = priv->tsf_low32 = 0;
2094         mutex_unlock(&priv->conf_mutex);
2095 }
2096
2097 static int p54_add_interface(struct ieee80211_hw *dev,
2098                              struct ieee80211_if_init_conf *conf)
2099 {
2100         struct p54_common *priv = dev->priv;
2101
2102         mutex_lock(&priv->conf_mutex);
2103         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2104                 mutex_unlock(&priv->conf_mutex);
2105                 return -EOPNOTSUPP;
2106         }
2107
2108         switch (conf->type) {
2109         case NL80211_IFTYPE_STATION:
2110         case NL80211_IFTYPE_ADHOC:
2111         case NL80211_IFTYPE_AP:
2112         case NL80211_IFTYPE_MESH_POINT:
2113                 priv->mode = conf->type;
2114                 break;
2115         default:
2116                 mutex_unlock(&priv->conf_mutex);
2117                 return -EOPNOTSUPP;
2118         }
2119
2120         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2121         p54_setup_mac(dev);
2122         p54_set_leds(dev, 1, 0, 0);
2123         mutex_unlock(&priv->conf_mutex);
2124         return 0;
2125 }
2126
2127 static void p54_remove_interface(struct ieee80211_hw *dev,
2128                                  struct ieee80211_if_init_conf *conf)
2129 {
2130         struct p54_common *priv = dev->priv;
2131
2132         mutex_lock(&priv->conf_mutex);
2133         if (priv->cached_beacon)
2134                 p54_tx_cancel(dev, priv->cached_beacon);
2135         priv->mode = NL80211_IFTYPE_MONITOR;
2136         memset(priv->mac_addr, 0, ETH_ALEN);
2137         memset(priv->bssid, 0, ETH_ALEN);
2138         p54_setup_mac(dev);
2139         mutex_unlock(&priv->conf_mutex);
2140 }
2141
2142 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2143 {
2144         int ret = 0;
2145         struct p54_common *priv = dev->priv;
2146         struct ieee80211_conf *conf = &dev->conf;
2147
2148         mutex_lock(&priv->conf_mutex);
2149         if (changed & IEEE80211_CONF_CHANGE_POWER)
2150                 priv->output_power = conf->power_level << 2;
2151         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2152                 ret = p54_setup_mac(dev);
2153                 if (ret)
2154                         goto out;
2155         }
2156         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2157                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2158                 if (ret)
2159                         goto out;
2160         }
2161         if (changed & IEEE80211_CONF_CHANGE_PS) {
2162                 ret = p54_set_ps(dev);
2163                 if (ret)
2164                         goto out;
2165         }
2166
2167 out:
2168         mutex_unlock(&priv->conf_mutex);
2169         return ret;
2170 }
2171
2172 static int p54_config_interface(struct ieee80211_hw *dev,
2173                                 struct ieee80211_vif *vif,
2174                                 struct ieee80211_if_conf *conf)
2175 {
2176         struct p54_common *priv = dev->priv;
2177         int ret = 0;
2178
2179         mutex_lock(&priv->conf_mutex);
2180         if (conf->changed & IEEE80211_IFCC_BSSID) {
2181                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2182                 ret = p54_setup_mac(dev);
2183                 if (ret)
2184                         goto out;
2185         }
2186
2187         if (conf->changed & IEEE80211_IFCC_BEACON) {
2188                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2189                 if (ret)
2190                         goto out;
2191                 ret = p54_setup_mac(dev);
2192                 if (ret)
2193                         goto out;
2194                 ret = p54_beacon_update(dev, vif);
2195                 if (ret)
2196                         goto out;
2197                 ret = p54_set_edcf(dev);
2198                 if (ret)
2199                         goto out;
2200         }
2201
2202         ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
2203
2204 out:
2205         mutex_unlock(&priv->conf_mutex);
2206         return ret;
2207 }
2208
2209 static void p54_configure_filter(struct ieee80211_hw *dev,
2210                                  unsigned int changed_flags,
2211                                  unsigned int *total_flags,
2212                                  int mc_count, struct dev_mc_list *mclist)
2213 {
2214         struct p54_common *priv = dev->priv;
2215
2216         *total_flags &= FIF_PROMISC_IN_BSS |
2217                         FIF_OTHER_BSS |
2218                         (*total_flags & FIF_PROMISC_IN_BSS ?
2219                                 FIF_FCSFAIL : 0);
2220
2221         priv->filter_flags = *total_flags;
2222
2223         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2224                 p54_setup_mac(dev);
2225 }
2226
2227 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2228                        const struct ieee80211_tx_queue_params *params)
2229 {
2230         struct p54_common *priv = dev->priv;
2231         int ret;
2232
2233         mutex_lock(&priv->conf_mutex);
2234         if ((params) && !(queue > 4)) {
2235                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2236                         params->cw_min, params->cw_max, params->txop);
2237                 ret = p54_set_edcf(dev);
2238         } else
2239                 ret = -EINVAL;
2240         mutex_unlock(&priv->conf_mutex);
2241         return ret;
2242 }
2243
2244 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2245 {
2246         struct p54_common *priv = dev->priv;
2247         struct sk_buff *skb;
2248         struct p54_xbow_synth *xbow;
2249
2250         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2251                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2252         if (!skb)
2253                 return -ENOMEM;
2254
2255         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2256         xbow->magic1 = cpu_to_le16(0x1);
2257         xbow->magic2 = cpu_to_le16(0x2);
2258         xbow->freq = cpu_to_le16(5390);
2259         memset(xbow->padding, 0, sizeof(xbow->padding));
2260         priv->tx(dev, skb);
2261         return 0;
2262 }
2263
2264 static void p54_work(struct work_struct *work)
2265 {
2266         struct p54_common *priv = container_of(work, struct p54_common,
2267                                                work.work);
2268         struct ieee80211_hw *dev = priv->hw;
2269         struct sk_buff *skb;
2270
2271         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2272                 return ;
2273
2274         /*
2275          * TODO: walk through tx_queue and do the following tasks
2276          *      1. initiate bursts.
2277          *      2. cancel stuck frames / reset the device if necessary.
2278          */
2279
2280         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2281                             sizeof(struct p54_statistics),
2282                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2283         if (!skb)
2284                 return ;
2285
2286         priv->tx(dev, skb);
2287 }
2288
2289 static int p54_get_stats(struct ieee80211_hw *dev,
2290                          struct ieee80211_low_level_stats *stats)
2291 {
2292         struct p54_common *priv = dev->priv;
2293
2294         memcpy(stats, &priv->stats, sizeof(*stats));
2295         return 0;
2296 }
2297
2298 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2299                             struct ieee80211_tx_queue_stats *stats)
2300 {
2301         struct p54_common *priv = dev->priv;
2302
2303         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2304                sizeof(stats[0]) * dev->queues);
2305         return 0;
2306 }
2307
2308 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2309                                  struct ieee80211_vif *vif,
2310                                  struct ieee80211_bss_conf *info,
2311                                  u32 changed)
2312 {
2313         struct p54_common *priv = dev->priv;
2314
2315         if (changed & BSS_CHANGED_ERP_SLOT) {
2316                 priv->use_short_slot = info->use_short_slot;
2317                 p54_set_edcf(dev);
2318         }
2319         if (changed & BSS_CHANGED_BASIC_RATES) {
2320                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2321                         priv->basic_rate_mask = (info->basic_rates << 4);
2322                 else
2323                         priv->basic_rate_mask = info->basic_rates;
2324                 p54_setup_mac(dev);
2325                 if (priv->fw_var >= 0x500)
2326                         p54_scan(dev, P54_SCAN_EXIT, 0);
2327         }
2328         if (changed & BSS_CHANGED_ASSOC) {
2329                 if (info->assoc) {
2330                         priv->aid = info->aid;
2331                         priv->wakeup_timer = info->beacon_int *
2332                                              info->dtim_period * 5;
2333                         p54_setup_mac(dev);
2334                 }
2335         }
2336
2337 }
2338
2339 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2340                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2341                        struct ieee80211_key_conf *key)
2342 {
2343         struct p54_common *priv = dev->priv;
2344         struct sk_buff *skb;
2345         struct p54_keycache *rxkey;
2346         u8 algo = 0;
2347
2348         if (modparam_nohwcrypt)
2349                 return -EOPNOTSUPP;
2350
2351         if (cmd == DISABLE_KEY)
2352                 algo = 0;
2353         else {
2354                 switch (key->alg) {
2355                 case ALG_TKIP:
2356                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2357                               BR_DESC_PRIV_CAP_TKIP)))
2358                                 return -EOPNOTSUPP;
2359                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2360                         algo = P54_CRYPTO_TKIPMICHAEL;
2361                         break;
2362                 case ALG_WEP:
2363                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2364                                 return -EOPNOTSUPP;
2365                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2366                         algo = P54_CRYPTO_WEP;
2367                         break;
2368                 case ALG_CCMP:
2369                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2370                                 return -EOPNOTSUPP;
2371                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2372                         algo = P54_CRYPTO_AESCCMP;
2373                         break;
2374                 default:
2375                         return -EOPNOTSUPP;
2376                 }
2377         }
2378
2379         if (key->keyidx > priv->rx_keycache_size) {
2380                 /*
2381                  * The device supports the choosen algorithm, but the firmware
2382                  * does not provide enough key slots to store all of them.
2383                  * So, incoming frames have to be decoded by the mac80211 stack,
2384                  * but we can still offload encryption for outgoing frames.
2385                  */
2386
2387                 return 0;
2388         }
2389
2390         mutex_lock(&priv->conf_mutex);
2391         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2392                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_ATOMIC);
2393         if (!skb) {
2394                 mutex_unlock(&priv->conf_mutex);
2395                 return -ENOMEM;
2396         }
2397
2398         /* TODO: some devices have 4 more free slots for rx keys */
2399         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2400         rxkey->entry = key->keyidx;
2401         rxkey->key_id = key->keyidx;
2402         rxkey->key_type = algo;
2403         if (sta)
2404                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2405         else
2406                 memset(rxkey->mac, ~0, ETH_ALEN);
2407         if (key->alg != ALG_TKIP) {
2408                 rxkey->key_len = min((u8)16, key->keylen);
2409                 memcpy(rxkey->key, key->key, rxkey->key_len);
2410         } else {
2411                 rxkey->key_len = 24;
2412                 memcpy(rxkey->key, key->key, 16);
2413                 memcpy(&(rxkey->key[16]), &(key->key
2414                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2415         }
2416
2417         priv->tx(dev, skb);
2418         mutex_unlock(&priv->conf_mutex);
2419         return 0;
2420 }
2421
2422 static const struct ieee80211_ops p54_ops = {
2423         .tx                     = p54_tx,
2424         .start                  = p54_start,
2425         .stop                   = p54_stop,
2426         .add_interface          = p54_add_interface,
2427         .remove_interface       = p54_remove_interface,
2428         .set_tim                = p54_set_tim,
2429         .sta_notify             = p54_sta_notify,
2430         .set_key                = p54_set_key,
2431         .config                 = p54_config,
2432         .config_interface       = p54_config_interface,
2433         .bss_info_changed       = p54_bss_info_changed,
2434         .configure_filter       = p54_configure_filter,
2435         .conf_tx                = p54_conf_tx,
2436         .get_stats              = p54_get_stats,
2437         .get_tx_stats           = p54_get_tx_stats
2438 };
2439
2440 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2441 {
2442         struct ieee80211_hw *dev;
2443         struct p54_common *priv;
2444
2445         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2446         if (!dev)
2447                 return NULL;
2448
2449         priv = dev->priv;
2450         priv->hw = dev;
2451         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2452         priv->basic_rate_mask = 0x15f;
2453         skb_queue_head_init(&priv->tx_queue);
2454         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2455                      IEEE80211_HW_SIGNAL_DBM |
2456                      IEEE80211_HW_NOISE_DBM;
2457
2458         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2459                                       BIT(NL80211_IFTYPE_ADHOC) |
2460                                       BIT(NL80211_IFTYPE_AP) |
2461                                       BIT(NL80211_IFTYPE_MESH_POINT);
2462
2463         dev->channel_change_time = 1000;        /* TODO: find actual value */
2464         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2465         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2466         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2467         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2468         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2469         dev->queues = 1;
2470         priv->noise = -94;
2471         /*
2472          * We support at most 8 tries no matter which rate they're at,
2473          * we cannot support max_rates * max_rate_tries as we set it
2474          * here, but setting it correctly to 4/2 or so would limit us
2475          * artificially if the RC algorithm wants just two rates, so
2476          * let's say 4/7, we'll redistribute it at TX time, see the
2477          * comments there.
2478          */
2479         dev->max_rates = 4;
2480         dev->max_rate_tries = 7;
2481         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2482                                  sizeof(struct p54_tx_data);
2483
2484         mutex_init(&priv->conf_mutex);
2485         init_completion(&priv->eeprom_comp);
2486         INIT_DELAYED_WORK(&priv->work, p54_work);
2487
2488         return dev;
2489 }
2490 EXPORT_SYMBOL_GPL(p54_init_common);
2491
2492 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2493 {
2494         int err;
2495
2496         err = ieee80211_register_hw(dev);
2497         if (err) {
2498                 dev_err(pdev, "Cannot register device (%d).\n", err);
2499                 return err;
2500         }
2501
2502         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2503         return 0;
2504 }
2505 EXPORT_SYMBOL_GPL(p54_register_common);
2506
2507 void p54_free_common(struct ieee80211_hw *dev)
2508 {
2509         struct p54_common *priv = dev->priv;
2510         kfree(priv->iq_autocal);
2511         kfree(priv->output_limit);
2512         kfree(priv->curve_data);
2513 }
2514 EXPORT_SYMBOL_GPL(p54_free_common);
2515
2516 static int __init p54_init(void)
2517 {
2518         return 0;
2519 }
2520
2521 static void __exit p54_exit(void)
2522 {
2523 }
2524
2525 module_init(p54_init);
2526 module_exit(p54_exit);