git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/p54/p54common.c

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24 #ifdef CONFIG_P54_LEDS
  25 #include <linux/leds.h>
  26 #endif /* CONFIG_P54_LEDS */
  27
  28 #include "p54.h"
  29 #include "p54common.h"
  30
  31 static int modparam_nohwcrypt;
  32 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  33 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  34 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  35 MODULE_DESCRIPTION("Softmac Prism54 common code");
  36 MODULE_LICENSE("GPL");
  37 MODULE_ALIAS("prism54common");
  38
  39 static struct ieee80211_rate p54_bgrates[] = {
  40         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  42         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  43         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  44         { .bitrate = 60, .hw_value = 4, },
  45         { .bitrate = 90, .hw_value = 5, },
  46         { .bitrate = 120, .hw_value = 6, },
  47         { .bitrate = 180, .hw_value = 7, },
  48         { .bitrate = 240, .hw_value = 8, },
  49         { .bitrate = 360, .hw_value = 9, },
  50         { .bitrate = 480, .hw_value = 10, },
  51         { .bitrate = 540, .hw_value = 11, },
  52 };
  53
  54 static struct ieee80211_channel p54_bgchannels[] = {
  55         { .center_freq = 2412, .hw_value = 1, },
  56         { .center_freq = 2417, .hw_value = 2, },
  57         { .center_freq = 2422, .hw_value = 3, },
  58         { .center_freq = 2427, .hw_value = 4, },
  59         { .center_freq = 2432, .hw_value = 5, },
  60         { .center_freq = 2437, .hw_value = 6, },
  61         { .center_freq = 2442, .hw_value = 7, },
  62         { .center_freq = 2447, .hw_value = 8, },
  63         { .center_freq = 2452, .hw_value = 9, },
  64         { .center_freq = 2457, .hw_value = 10, },
  65         { .center_freq = 2462, .hw_value = 11, },
  66         { .center_freq = 2467, .hw_value = 12, },
  67         { .center_freq = 2472, .hw_value = 13, },
  68         { .center_freq = 2484, .hw_value = 14, },
  69 };
  70
  71 static struct ieee80211_supported_band band_2GHz = {
  72         .channels = p54_bgchannels,
  73         .n_channels = ARRAY_SIZE(p54_bgchannels),
  74         .bitrates = p54_bgrates,
  75         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  76 };
  77
  78 static struct ieee80211_rate p54_arates[] = {
  79         { .bitrate = 60, .hw_value = 4, },
  80         { .bitrate = 90, .hw_value = 5, },
  81         { .bitrate = 120, .hw_value = 6, },
  82         { .bitrate = 180, .hw_value = 7, },
  83         { .bitrate = 240, .hw_value = 8, },
  84         { .bitrate = 360, .hw_value = 9, },
  85         { .bitrate = 480, .hw_value = 10, },
  86         { .bitrate = 540, .hw_value = 11, },
  87 };
  88
  89 static struct ieee80211_channel p54_achannels[] = {
  90         { .center_freq = 4920 },
  91         { .center_freq = 4940 },
  92         { .center_freq = 4960 },
  93         { .center_freq = 4980 },
  94         { .center_freq = 5040 },
  95         { .center_freq = 5060 },
  96         { .center_freq = 5080 },
  97         { .center_freq = 5170 },
  98         { .center_freq = 5180 },
  99         { .center_freq = 5190 },
 100         { .center_freq = 5200 },
 101         { .center_freq = 5210 },
 102         { .center_freq = 5220 },
 103         { .center_freq = 5230 },
 104         { .center_freq = 5240 },
 105         { .center_freq = 5260 },
 106         { .center_freq = 5280 },
 107         { .center_freq = 5300 },
 108         { .center_freq = 5320 },
 109         { .center_freq = 5500 },
 110         { .center_freq = 5520 },
 111         { .center_freq = 5540 },
 112         { .center_freq = 5560 },
 113         { .center_freq = 5580 },
 114         { .center_freq = 5600 },
 115         { .center_freq = 5620 },
 116         { .center_freq = 5640 },
 117         { .center_freq = 5660 },
 118         { .center_freq = 5680 },
 119         { .center_freq = 5700 },
 120         { .center_freq = 5745 },
 121         { .center_freq = 5765 },
 122         { .center_freq = 5785 },
 123         { .center_freq = 5805 },
 124         { .center_freq = 5825 },
 125 };
 126
 127 static struct ieee80211_supported_band band_5GHz = {
 128         .channels = p54_achannels,
 129         .n_channels = ARRAY_SIZE(p54_achannels),
 130         .bitrates = p54_arates,
 131         .n_bitrates = ARRAY_SIZE(p54_arates),
 132 };
 133
 134 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 135 {
 136         struct p54_common *priv = dev->priv;
 137         struct bootrec_exp_if *exp_if;
 138         struct bootrec *bootrec;
 139         u32 *data = (u32 *)fw->data;
 140         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 141         u8 *fw_version = NULL;
 142         size_t len;
 143         int i;
 144         int maxlen;
 145
 146         if (priv->rx_start)
 147                 return 0;
 148
 149         while (data < end_data && *data)
 150                 data++;
 151
 152         while (data < end_data && !*data)
 153                 data++;
 154
 155         bootrec = (struct bootrec *) data;
 156
 157         while (bootrec->data <= end_data &&
 158                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 159                 u32 code = le32_to_cpu(bootrec->code);
 160                 switch (code) {
 161                 case BR_CODE_COMPONENT_ID:
 162                         priv->fw_interface = be32_to_cpup((__be32 *)
 163                                              bootrec->data);
 164                         switch (priv->fw_interface) {
 165                         case FW_LM86:
 166                         case FW_LM20:
 167                         case FW_LM87: {
 168                                 char *iftype = (char *)bootrec->data;
 169                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 170                                                  "firmware\n",
 171                                         wiphy_name(dev->wiphy),
 172                                         iftype[2], iftype[3]);
 173                                 break;
 174                                 }
 175                         case FW_FMAC:
 176                         default:
 177                                 printk(KERN_ERR "%s: unsupported firmware\n",
 178                                         wiphy_name(dev->wiphy));
 179                                 return -ENODEV;
 180                         }
 181                         break;
 182                 case BR_CODE_COMPONENT_VERSION:
 183                         /* 24 bytes should be enough for all firmwares */
 184                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 185                                 fw_version = (unsigned char*)bootrec->data;
 186                         break;
 187                 case BR_CODE_DESCR: {
 188                         struct bootrec_desc *desc =
 189                                 (struct bootrec_desc *)bootrec->data;
 190                         priv->rx_start = le32_to_cpu(desc->rx_start);
 191                         /* FIXME add sanity checking */
 192                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 193                         priv->headroom = desc->headroom;
 194                         priv->tailroom = desc->tailroom;
 195                         priv->privacy_caps = desc->privacy_caps;
 196                         priv->rx_keycache_size = desc->rx_keycache_size;
 197                         if (le32_to_cpu(bootrec->len) == 11)
 198                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 199                         else
 200                                 priv->rx_mtu = (size_t)
 201                                         0x620 - priv->tx_hdr_len;
 202                         maxlen = priv->tx_hdr_len + /* USB devices */
 203                                  sizeof(struct p54_rx_data) +
 204                                  4 + /* rx alignment */
 205                                  IEEE80211_MAX_FRAG_THRESHOLD;
 206                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 207                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 208                                                  "to %d\n", priv->rx_mtu,
 209                                                  maxlen);
 210                                 priv->rx_mtu = maxlen;
 211                         }
 212                         break;
 213                         }
 214                 case BR_CODE_EXPOSED_IF:
 215                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 216                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 217                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 218                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 219                         break;
 220                 case BR_CODE_DEPENDENT_IF:
 221                         break;
 222                 case BR_CODE_END_OF_BRA:
 223                 case LEGACY_BR_CODE_END_OF_BRA:
 224                         end_data = NULL;
 225                         break;
 226                 default:
 227                         break;
 228                 }
 229                 bootrec = (struct bootrec *)&bootrec->data[len];
 230         }
 231
 232         if (fw_version)
 233                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 234                         wiphy_name(dev->wiphy), fw_version,
 235                         priv->fw_var >> 8, priv->fw_var & 0xff);
 236
 237         if (priv->fw_var < 0x500)
 238                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 239                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 240                        "and grab one for \"kernel >= 2.6.28\"!\n",
 241                         wiphy_name(dev->wiphy));
 242
 243         if (priv->fw_var >= 0x300) {
 244                 /* Firmware supports QoS, use it! */
 245                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 246                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 247                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 248                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 249                 dev->queues = P54_QUEUE_AC_NUM;
 250         }
 251
 252         if (!modparam_nohwcrypt)
 253                 printk(KERN_INFO "%s: cryptographic accelerator "
 254                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 255                         wiphy_name(dev->wiphy),
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 257                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 258                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 259                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 260                         "YES" : "no");
 261
 262         return 0;
 263 }
 264 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 265
 266 static int p54_convert_rev0(struct ieee80211_hw *dev,
 267                             struct pda_pa_curve_data *curve_data)
 268 {
 269         struct p54_common *priv = dev->priv;
 270         struct p54_pa_curve_data_sample *dst;
 271         struct pda_pa_curve_data_sample_rev0 *src;
 272         size_t cd_len = sizeof(*curve_data) +
 273                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 274                  curve_data->channels;
 275         unsigned int i, j;
 276         void *source, *target;
 277
 278         priv->curve_data = kmalloc(sizeof(*priv->curve_data) + cd_len,
 279                                    GFP_KERNEL);
 280         if (!priv->curve_data)
 281                 return -ENOMEM;
 282
 283         priv->curve_data->entries = curve_data->channels;
 284         priv->curve_data->entry_size = sizeof(__le16) +
 285                 sizeof(*dst) * curve_data->points_per_channel;
 286         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 287         priv->curve_data->len = cd_len;
 288         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 289         source = curve_data->data;
 290         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 291         for (i = 0; i < curve_data->channels; i++) {
 292                 __le16 *freq = source;
 293                 source += sizeof(__le16);
 294                 *((__le16 *)target) = *freq;
 295                 target += sizeof(__le16);
 296                 for (j = 0; j < curve_data->points_per_channel; j++) {
 297                         dst = target;
 298                         src = source;
 299
 300                         dst->rf_power = src->rf_power;
 301                         dst->pa_detector = src->pa_detector;
 302                         dst->data_64qam = src->pcv;
 303                         /* "invent" the points for the other modulations */
 304 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 305                         dst->data_16qam = SUB(src->pcv, 12);
 306                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 307                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 308                         dst->data_barker = SUB(dst->data_bpsk, 14);
 309 #undef SUB
 310                         target += sizeof(*dst);
 311                         source += sizeof(*src);
 312                 }
 313         }
 314
 315         return 0;
 316 }
 317
 318 static int p54_convert_rev1(struct ieee80211_hw *dev,
 319                             struct pda_pa_curve_data *curve_data)
 320 {
 321         struct p54_common *priv = dev->priv;
 322         struct p54_pa_curve_data_sample *dst;
 323         struct pda_pa_curve_data_sample_rev1 *src;
 324         size_t cd_len = sizeof(*curve_data) +
 325                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 326                  curve_data->channels;
 327         unsigned int i, j;
 328         void *source, *target;
 329
 330         priv->curve_data = kzalloc(cd_len + sizeof(*priv->curve_data),
 331                                    GFP_KERNEL);
 332         if (!priv->curve_data)
 333                 return -ENOMEM;
 334
 335         priv->curve_data->entries = curve_data->channels;
 336         priv->curve_data->entry_size = sizeof(__le16) +
 337                 sizeof(*dst) * curve_data->points_per_channel;
 338         priv->curve_data->offset = offsetof(struct pda_pa_curve_data, data);
 339         priv->curve_data->len = cd_len;
 340         memcpy(priv->curve_data->data, curve_data, sizeof(*curve_data));
 341         source = curve_data->data;
 342         target = ((struct pda_pa_curve_data *) priv->curve_data->data)->data;
 343         for (i = 0; i < curve_data->channels; i++) {
 344                 __le16 *freq = source;
 345                 source += sizeof(__le16);
 346                 *((__le16 *)target) = *freq;
 347                 target += sizeof(__le16);
 348                 for (j = 0; j < curve_data->points_per_channel; j++) {
 349                         memcpy(target, source, sizeof(*src));
 350
 351                         target += sizeof(*dst);
 352                         source += sizeof(*src);
 353                 }
 354                 source++;
 355         }
 356
 357         return 0;
 358 }
 359
 360 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 361                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 362 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 363
 364 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 365                              u16 type)
 366 {
 367         struct p54_common *priv = dev->priv;
 368         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 369         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 370         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 371         int i;
 372
 373         if (len != (entry_size * num_entries)) {
 374                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 375                                  " type:(%x) len:%d.\n",
 376                        wiphy_name(dev->wiphy), type, len);
 377
 378                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 379                                      data, len);
 380
 381                 printk(KERN_ERR "%s: please report this issue.\n",
 382                         wiphy_name(dev->wiphy));
 383                 return;
 384         }
 385
 386         for (i = 0; i < num_entries; i++) {
 387                 struct pda_rssi_cal_entry *cal = data +
 388                                                  (offset + i * entry_size);
 389                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 390                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 391         }
 392 }
 393
 394 static void p54_parse_default_country(struct ieee80211_hw *dev,
 395                                       void *data, int len)
 396 {
 397         struct pda_country *country;
 398
 399         if (len != sizeof(*country)) {
 400                 printk(KERN_ERR "%s: found possible invalid default country "
 401                                 "eeprom entry. (entry size: %d)\n",
 402                        wiphy_name(dev->wiphy), len);
 403
 404                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 405                                      data, len);
 406
 407                 printk(KERN_ERR "%s: please report this issue.\n",
 408                         wiphy_name(dev->wiphy));
 409                 return;
 410         }
 411
 412         country = (struct pda_country *) data;
 413         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 414                 regulatory_hint(dev->wiphy, country->alpha2);
 415         else {
 416                 /* TODO:
 417                  * write a shared/common function that converts
 418                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 419                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 420                  */
 421         }
 422 }
 423
 424 static int p54_convert_output_limits(struct ieee80211_hw *dev,
 425                                      u8 *data, size_t len)
 426 {
 427         struct p54_common *priv = dev->priv;
 428
 429         if (len < 2)
 430                 return -EINVAL;
 431
 432         if (data[0] != 0) {
 433                 printk(KERN_ERR "%s: unknown output power db revision:%x\n",
 434                        wiphy_name(dev->wiphy), data[0]);
 435                 return -EINVAL;
 436         }
 437
 438         if (2 + data[1] * sizeof(struct pda_channel_output_limit) > len)
 439                 return -EINVAL;
 440
 441         priv->output_limit = kmalloc(data[1] *
 442                 sizeof(struct pda_channel_output_limit) +
 443                 sizeof(*priv->output_limit), GFP_KERNEL);
 444
 445         if (!priv->output_limit)
 446                 return -ENOMEM;
 447
 448         priv->output_limit->offset = 0;
 449         priv->output_limit->entries = data[1];
 450         priv->output_limit->entry_size =
 451                 sizeof(struct pda_channel_output_limit);
 452         priv->output_limit->len = priv->output_limit->entry_size *
 453                                   priv->output_limit->entries +
 454                                   priv->output_limit->offset;
 455
 456         memcpy(priv->output_limit->data, &data[2],
 457                data[1] * sizeof(struct pda_channel_output_limit));
 458
 459         return 0;
 460 }
 461
 462 static struct p54_cal_database *p54_convert_db(struct pda_custom_wrapper *src,
 463                                                size_t total_len)
 464 {
 465         struct p54_cal_database *dst;
 466         size_t payload_len, entries, entry_size, offset;
 467
 468         payload_len = le16_to_cpu(src->len);
 469         entries = le16_to_cpu(src->entries);
 470         entry_size = le16_to_cpu(src->entry_size);
 471         offset = le16_to_cpu(src->offset);
 472         if (((entries * entry_size + offset) != payload_len) ||
 473              (payload_len + sizeof(*src) != total_len))
 474                 return NULL;
 475
 476         dst = kmalloc(sizeof(*dst) + payload_len, GFP_KERNEL);
 477         if (!dst)
 478                 return NULL;
 479
 480         dst->entries = entries;
 481         dst->entry_size = entry_size;
 482         dst->offset = offset;
 483         dst->len = payload_len;
 484
 485         memcpy(dst->data, src->data, payload_len);
 486         return dst;
 487 }
 488
 489 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 490 {
 491         struct p54_common *priv = dev->priv;
 492         struct eeprom_pda_wrap *wrap = NULL;
 493         struct pda_entry *entry;
 494         unsigned int data_len, entry_len;
 495         void *tmp;
 496         int err;
 497         u8 *end = (u8 *)eeprom + len;
 498         u16 synth = 0;
 499
 500         wrap = (struct eeprom_pda_wrap *) eeprom;
 501         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 502
 503         /* verify that at least the entry length/code fits */
 504         while ((u8 *)entry <= end - sizeof(*entry)) {
 505                 entry_len = le16_to_cpu(entry->len);
 506                 data_len = ((entry_len - 1) << 1);
 507
 508                 /* abort if entry exceeds whole structure */
 509                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 510                         break;
 511
 512                 switch (le16_to_cpu(entry->code)) {
 513                 case PDR_MAC_ADDRESS:
 514                         if (data_len != ETH_ALEN)
 515                                 break;
 516                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 517                         break;
 518                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 519                         if (priv->output_limit)
 520                                 break;
 521                         err = p54_convert_output_limits(dev, entry->data,
 522                                                         data_len);
 523                         if (err)
 524                                 goto err;
 525                         break;
 526                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 527                         struct pda_pa_curve_data *curve_data =
 528                                 (struct pda_pa_curve_data *)entry->data;
 529                         if (data_len < sizeof(*curve_data)) {
 530                                 err = -EINVAL;
 531                                 goto err;
 532                         }
 533
 534                         switch (curve_data->cal_method_rev) {
 535                         case 0:
 536                                 err = p54_convert_rev0(dev, curve_data);
 537                                 break;
 538                         case 1:
 539                                 err = p54_convert_rev1(dev, curve_data);
 540                                 break;
 541                         default:
 542                                 printk(KERN_ERR "%s: unknown curve data "
 543                                                 "revision %d\n",
 544                                                 wiphy_name(dev->wiphy),
 545                                                 curve_data->cal_method_rev);
 546                                 err = -ENODEV;
 547                                 break;
 548                         }
 549                         if (err)
 550                                 goto err;
 551                         }
 552                         break;
 553                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 554                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 555                         if (!priv->iq_autocal) {
 556                                 err = -ENOMEM;
 557                                 goto err;
 558                         }
 559
 560                         memcpy(priv->iq_autocal, entry->data, data_len);
 561                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 562                         break;
 563                 case PDR_DEFAULT_COUNTRY:
 564                         p54_parse_default_country(dev, entry->data, data_len);
 565                         break;
 566                 case PDR_INTERFACE_LIST:
 567                         tmp = entry->data;
 568                         while ((u8 *)tmp < entry->data + data_len) {
 569                                 struct bootrec_exp_if *exp_if = tmp;
 570                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 571                                         synth = le16_to_cpu(exp_if->variant);
 572                                 tmp += sizeof(struct bootrec_exp_if);
 573                         }
 574                         break;
 575                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 576                         if (data_len < 2)
 577                                 break;
 578                         priv->version = *(u8 *)(entry->data + 1);
 579                         break;
 580                 case PDR_RSSI_LINEAR_APPROXIMATION:
 581                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 582                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 583                         p54_parse_rssical(dev, entry->data, data_len,
 584                                           le16_to_cpu(entry->code));
 585                         break;
 586                 case PDR_RSSI_LINEAR_APPROXIMATION_CUSTOM: {
 587                         __le16 *src = (void *) entry->data;
 588                         s16 *dst = (void *) &priv->rssical_db;
 589                         int i;
 590
 591                         if (data_len != sizeof(priv->rssical_db)) {
 592                                 err = -EINVAL;
 593                                 goto err;
 594                         }
 595                         for (i = 0; i < sizeof(priv->rssical_db) /
 596                                         sizeof(*src); i++)
 597                                 *(dst++) = (s16) le16_to_cpu(*(src++));
 598                         }
 599                         break;
 600                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS_CUSTOM: {
 601                         struct pda_custom_wrapper *pda = (void *) entry->data;
 602                         if (priv->output_limit || data_len < sizeof(*pda))
 603                                 break;
 604                         priv->output_limit = p54_convert_db(pda, data_len);
 605                         }
 606                         break;
 607                 case PDR_PRISM_PA_CAL_CURVE_DATA_CUSTOM: {
 608                         struct pda_custom_wrapper *pda = (void *) entry->data;
 609                         if (priv->curve_data || data_len < sizeof(*pda))
 610                                 break;
 611                         priv->curve_data = p54_convert_db(pda, data_len);
 612                         }
 613                         break;
 614                 case PDR_END:
 615                         /* make it overrun */
 616                         entry_len = len;
 617                         break;
 618                 case PDR_MANUFACTURING_PART_NUMBER:
 619                 case PDR_PDA_VERSION:
 620                 case PDR_NIC_SERIAL_NUMBER:
 621                 case PDR_REGULATORY_DOMAIN_LIST:
 622                 case PDR_TEMPERATURE_TYPE:
 623                 case PDR_PRISM_PCI_IDENTIFIER:
 624                 case PDR_COUNTRY_INFORMATION:
 625                 case PDR_OEM_NAME:
 626                 case PDR_PRODUCT_NAME:
 627                 case PDR_UTF8_OEM_NAME:
 628                 case PDR_UTF8_PRODUCT_NAME:
 629                 case PDR_COUNTRY_LIST:
 630                 case PDR_ANTENNA_GAIN:
 631                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 632                 case PDR_REGULATORY_POWER_LIMITS:
 633                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 634                 case PDR_PRISM_TX_IQ_CALIBRATION:
 635                 case PDR_BASEBAND_REGISTERS:
 636                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 637                         break;
 638                 default:
 639                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 640                                 wiphy_name(dev->wiphy),
 641                                 le16_to_cpu(entry->code));
 642                         break;
 643                 }
 644
 645                 entry = (void *)entry + (entry_len + 1)*2;
 646         }
 647
 648         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 649             !priv->curve_data) {
 650                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 651                         wiphy_name(dev->wiphy));
 652                 err = -EINVAL;
 653                 goto err;
 654         }
 655
 656         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 657         if (priv->rxhw == PDR_SYNTH_FRONTEND_XBOW)
 658                 p54_init_xbow_synth(dev);
 659         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 660                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 661         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 662                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 663         if ((synth & PDR_SYNTH_RX_DIV_MASK) == PDR_SYNTH_RX_DIV_SUPPORTED)
 664                 priv->rx_diversity_mask = 3;
 665         if ((synth & PDR_SYNTH_TX_DIV_MASK) == PDR_SYNTH_TX_DIV_SUPPORTED)
 666                 priv->tx_diversity_mask = 3;
 667
 668         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 669                 u8 perm_addr[ETH_ALEN];
 670
 671                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 672                         wiphy_name(dev->wiphy));
 673                 random_ether_addr(perm_addr);
 674                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 675         }
 676
 677         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 678                 wiphy_name(dev->wiphy),
 679                 dev->wiphy->perm_addr,
 680                 priv->version, p54_rf_chips[priv->rxhw]);
 681
 682         return 0;
 683
 684   err:
 685         if (priv->iq_autocal) {
 686                 kfree(priv->iq_autocal);
 687                 priv->iq_autocal = NULL;
 688         }
 689
 690         if (priv->output_limit) {
 691                 kfree(priv->output_limit);
 692                 priv->output_limit = NULL;
 693         }
 694
 695         if (priv->curve_data) {
 696                 kfree(priv->curve_data);
 697                 priv->curve_data = NULL;
 698         }
 699
 700         printk(KERN_ERR "%s: eeprom parse failed!\n",
 701                 wiphy_name(dev->wiphy));
 702         return err;
 703 }
 704 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 705
 706 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 707 {
 708         struct p54_common *priv = dev->priv;
 709         int band = dev->conf.channel->band;
 710
 711         if (priv->rxhw != PDR_SYNTH_FRONTEND_LONGBOW)
 712                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 713                          priv->rssical_db[band].add) / 4;
 714         else
 715                 /*
 716                  * TODO: find the correct formula
 717                  */
 718                 return ((rssi * priv->rssical_db[band].mul) / 64 +
 719                          priv->rssical_db[band].add) / 4;
 720 }
 721
 722 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 723 {
 724         struct p54_common *priv = dev->priv;
 725         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 726         struct ieee80211_rx_status rx_status = {0};
 727         u16 freq = le16_to_cpu(hdr->freq);
 728         size_t header_len = sizeof(*hdr);
 729         u32 tsf32;
 730         u8 rate = hdr->rate & 0xf;
 731
 732         /*
 733          * If the device is in a unspecified state we have to
 734          * ignore all data frames. Else we could end up with a
 735          * nasty crash.
 736          */
 737         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 738                 return 0;
 739
 740         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 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_HIBERNATE;
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_HIBERNATE;
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)
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->flags = cpu_to_le16(0x0003);
1887         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1888         led->delay[0] = cpu_to_le16(1);
1889         led->delay[1] = cpu_to_le16(0);
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         priv->softled_state = 0;
2074         err = p54_set_leds(dev);
2075
2076 out:
2077         mutex_unlock(&priv->conf_mutex);
2078         return err;
2079 }
2080
2081 static void p54_stop(struct ieee80211_hw *dev)
2082 {
2083         struct p54_common *priv = dev->priv;
2084         struct sk_buff *skb;
2085
2086         mutex_lock(&priv->conf_mutex);
2087         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2088         priv->softled_state = 0;
2089         p54_set_leds(dev);
2090
2091         cancel_delayed_work_sync(&priv->work);
2092         if (priv->cached_beacon)
2093                 p54_tx_cancel(dev, priv->cached_beacon);
2094
2095         priv->stop(dev);
2096         while ((skb = skb_dequeue(&priv->tx_queue)))
2097                 kfree_skb(skb);
2098         priv->cached_beacon = NULL;
2099         priv->tsf_high32 = priv->tsf_low32 = 0;
2100         mutex_unlock(&priv->conf_mutex);
2101 }
2102
2103 static int p54_add_interface(struct ieee80211_hw *dev,
2104                              struct ieee80211_if_init_conf *conf)
2105 {
2106         struct p54_common *priv = dev->priv;
2107
2108         mutex_lock(&priv->conf_mutex);
2109         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2110                 mutex_unlock(&priv->conf_mutex);
2111                 return -EOPNOTSUPP;
2112         }
2113
2114         switch (conf->type) {
2115         case NL80211_IFTYPE_STATION:
2116         case NL80211_IFTYPE_ADHOC:
2117         case NL80211_IFTYPE_AP:
2118         case NL80211_IFTYPE_MESH_POINT:
2119                 priv->mode = conf->type;
2120                 break;
2121         default:
2122                 mutex_unlock(&priv->conf_mutex);
2123                 return -EOPNOTSUPP;
2124         }
2125
2126         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2127         p54_setup_mac(dev);
2128         mutex_unlock(&priv->conf_mutex);
2129         return 0;
2130 }
2131
2132 static void p54_remove_interface(struct ieee80211_hw *dev,
2133                                  struct ieee80211_if_init_conf *conf)
2134 {
2135         struct p54_common *priv = dev->priv;
2136
2137         mutex_lock(&priv->conf_mutex);
2138         if (priv->cached_beacon)
2139                 p54_tx_cancel(dev, priv->cached_beacon);
2140         priv->mode = NL80211_IFTYPE_MONITOR;
2141         memset(priv->mac_addr, 0, ETH_ALEN);
2142         memset(priv->bssid, 0, ETH_ALEN);
2143         p54_setup_mac(dev);
2144         mutex_unlock(&priv->conf_mutex);
2145 }
2146
2147 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2148 {
2149         int ret = 0;
2150         struct p54_common *priv = dev->priv;
2151         struct ieee80211_conf *conf = &dev->conf;
2152
2153         mutex_lock(&priv->conf_mutex);
2154         if (changed & IEEE80211_CONF_CHANGE_POWER)
2155                 priv->output_power = conf->power_level << 2;
2156         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2157                 ret = p54_setup_mac(dev);
2158                 if (ret)
2159                         goto out;
2160         }
2161         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2162                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2163                 if (ret)
2164                         goto out;
2165         }
2166         if (changed & IEEE80211_CONF_CHANGE_PS) {
2167                 ret = p54_set_ps(dev);
2168                 if (ret)
2169                         goto out;
2170         }
2171
2172 out:
2173         mutex_unlock(&priv->conf_mutex);
2174         return ret;
2175 }
2176
2177 static int p54_config_interface(struct ieee80211_hw *dev,
2178                                 struct ieee80211_vif *vif,
2179                                 struct ieee80211_if_conf *conf)
2180 {
2181         struct p54_common *priv = dev->priv;
2182         int ret = 0;
2183
2184         mutex_lock(&priv->conf_mutex);
2185         if (conf->changed & IEEE80211_IFCC_BSSID) {
2186                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2187                 ret = p54_setup_mac(dev);
2188                 if (ret)
2189                         goto out;
2190         }
2191
2192         if (conf->changed & IEEE80211_IFCC_BEACON) {
2193                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2194                 if (ret)
2195                         goto out;
2196                 ret = p54_setup_mac(dev);
2197                 if (ret)
2198                         goto out;
2199                 ret = p54_beacon_update(dev, vif);
2200                 if (ret)
2201                         goto out;
2202                 ret = p54_set_edcf(dev);
2203                 if (ret)
2204                         goto out;
2205         }
2206
2207 out:
2208         mutex_unlock(&priv->conf_mutex);
2209         return ret;
2210 }
2211
2212 static void p54_configure_filter(struct ieee80211_hw *dev,
2213                                  unsigned int changed_flags,
2214                                  unsigned int *total_flags,
2215                                  int mc_count, struct dev_mc_list *mclist)
2216 {
2217         struct p54_common *priv = dev->priv;
2218
2219         *total_flags &= FIF_PROMISC_IN_BSS |
2220                         FIF_OTHER_BSS;
2221
2222         priv->filter_flags = *total_flags;
2223
2224         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2225                 p54_setup_mac(dev);
2226 }
2227
2228 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2229                        const struct ieee80211_tx_queue_params *params)
2230 {
2231         struct p54_common *priv = dev->priv;
2232         int ret;
2233
2234         mutex_lock(&priv->conf_mutex);
2235         if ((params) && !(queue > 4)) {
2236                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2237                         params->cw_min, params->cw_max, params->txop);
2238                 ret = p54_set_edcf(dev);
2239         } else
2240                 ret = -EINVAL;
2241         mutex_unlock(&priv->conf_mutex);
2242         return ret;
2243 }
2244
2245 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2246 {
2247         struct p54_common *priv = dev->priv;
2248         struct sk_buff *skb;
2249         struct p54_xbow_synth *xbow;
2250
2251         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2252                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2253         if (!skb)
2254                 return -ENOMEM;
2255
2256         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2257         xbow->magic1 = cpu_to_le16(0x1);
2258         xbow->magic2 = cpu_to_le16(0x2);
2259         xbow->freq = cpu_to_le16(5390);
2260         memset(xbow->padding, 0, sizeof(xbow->padding));
2261         priv->tx(dev, skb);
2262         return 0;
2263 }
2264
2265 static void p54_work(struct work_struct *work)
2266 {
2267         struct p54_common *priv = container_of(work, struct p54_common,
2268                                                work.work);
2269         struct ieee80211_hw *dev = priv->hw;
2270         struct sk_buff *skb;
2271
2272         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2273                 return ;
2274
2275         /*
2276          * TODO: walk through tx_queue and do the following tasks
2277          *      1. initiate bursts.
2278          *      2. cancel stuck frames / reset the device if necessary.
2279          */
2280
2281         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2282                             sizeof(struct p54_statistics),
2283                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2284         if (!skb)
2285                 return ;
2286
2287         priv->tx(dev, skb);
2288 }
2289
2290 static int p54_get_stats(struct ieee80211_hw *dev,
2291                          struct ieee80211_low_level_stats *stats)
2292 {
2293         struct p54_common *priv = dev->priv;
2294
2295         memcpy(stats, &priv->stats, sizeof(*stats));
2296         return 0;
2297 }
2298
2299 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2300                             struct ieee80211_tx_queue_stats *stats)
2301 {
2302         struct p54_common *priv = dev->priv;
2303
2304         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2305                sizeof(stats[0]) * dev->queues);
2306         return 0;
2307 }
2308
2309 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2310                                  struct ieee80211_vif *vif,
2311                                  struct ieee80211_bss_conf *info,
2312                                  u32 changed)
2313 {
2314         struct p54_common *priv = dev->priv;
2315
2316         if (changed & BSS_CHANGED_ERP_SLOT) {
2317                 priv->use_short_slot = info->use_short_slot;
2318                 p54_set_edcf(dev);
2319         }
2320         if (changed & BSS_CHANGED_BASIC_RATES) {
2321                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2322                         priv->basic_rate_mask = (info->basic_rates << 4);
2323                 else
2324                         priv->basic_rate_mask = info->basic_rates;
2325                 p54_setup_mac(dev);
2326                 if (priv->fw_var >= 0x500)
2327                         p54_scan(dev, P54_SCAN_EXIT, 0);
2328         }
2329         if (changed & BSS_CHANGED_ASSOC) {
2330                 if (info->assoc) {
2331                         priv->aid = info->aid;
2332                         priv->wakeup_timer = info->beacon_int *
2333                                              info->dtim_period * 5;
2334                         p54_setup_mac(dev);
2335                 }
2336         }
2337
2338 }
2339
2340 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2341                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2342                        struct ieee80211_key_conf *key)
2343 {
2344         struct p54_common *priv = dev->priv;
2345         struct sk_buff *skb;
2346         struct p54_keycache *rxkey;
2347         u8 algo = 0;
2348
2349         if (modparam_nohwcrypt)
2350                 return -EOPNOTSUPP;
2351
2352         if (cmd == DISABLE_KEY)
2353                 algo = 0;
2354         else {
2355                 switch (key->alg) {
2356                 case ALG_TKIP:
2357                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2358                               BR_DESC_PRIV_CAP_TKIP)))
2359                                 return -EOPNOTSUPP;
2360                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2361                         algo = P54_CRYPTO_TKIPMICHAEL;
2362                         break;
2363                 case ALG_WEP:
2364                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2365                                 return -EOPNOTSUPP;
2366                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2367                         algo = P54_CRYPTO_WEP;
2368                         break;
2369                 case ALG_CCMP:
2370                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2371                                 return -EOPNOTSUPP;
2372                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2373                         algo = P54_CRYPTO_AESCCMP;
2374                         break;
2375                 default:
2376                         return -EOPNOTSUPP;
2377                 }
2378         }
2379
2380         if (key->keyidx > priv->rx_keycache_size) {
2381                 /*
2382                  * The device supports the choosen algorithm, but the firmware
2383                  * does not provide enough key slots to store all of them.
2384                  * So, incoming frames have to be decoded by the mac80211 stack,
2385                  * but we can still offload encryption for outgoing frames.
2386                  */
2387
2388                 return 0;
2389         }
2390
2391         mutex_lock(&priv->conf_mutex);
2392         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2393                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_ATOMIC);
2394         if (!skb) {
2395                 mutex_unlock(&priv->conf_mutex);
2396                 return -ENOMEM;
2397         }
2398
2399         /* TODO: some devices have 4 more free slots for rx keys */
2400         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2401         rxkey->entry = key->keyidx;
2402         rxkey->key_id = key->keyidx;
2403         rxkey->key_type = algo;
2404         if (sta)
2405                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2406         else
2407                 memset(rxkey->mac, ~0, ETH_ALEN);
2408         if (key->alg != ALG_TKIP) {
2409                 rxkey->key_len = min((u8)16, key->keylen);
2410                 memcpy(rxkey->key, key->key, rxkey->key_len);
2411         } else {
2412                 rxkey->key_len = 24;
2413                 memcpy(rxkey->key, key->key, 16);
2414                 memcpy(&(rxkey->key[16]), &(key->key
2415                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2416         }
2417
2418         priv->tx(dev, skb);
2419         mutex_unlock(&priv->conf_mutex);
2420         return 0;
2421 }
2422
2423 #ifdef CONFIG_P54_LEDS
2424 static void p54_led_brightness_set(struct led_classdev *led_dev,
2425                                    enum led_brightness brightness)
2426 {
2427         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2428                                                led_dev);
2429         struct ieee80211_hw *dev = led->hw_dev;
2430         struct p54_common *priv = dev->priv;
2431         int err;
2432
2433         /* Don't toggle the LED, when the device is down. */
2434         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2435                 return ;
2436
2437         if (brightness != LED_OFF)
2438                 priv->softled_state |= BIT(led->index);
2439         else
2440                 priv->softled_state &= ~BIT(led->index);
2441
2442         err = p54_set_leds(dev);
2443         if (err && net_ratelimit())
2444                 printk(KERN_ERR "%s: failed to update %s LED.\n",
2445                         wiphy_name(dev->wiphy), led_dev->name);
2446 }
2447
2448 static int p54_register_led(struct ieee80211_hw *dev,
2449                             struct p54_led_dev *led,
2450                             unsigned int led_index,
2451                             char *name, char *trigger)
2452 {
2453         int err;
2454
2455         if (led->registered)
2456                 return -EEXIST;
2457
2458         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2459                  wiphy_name(dev->wiphy), name);
2460         led->hw_dev = dev;
2461         led->index = led_index;
2462         led->led_dev.name = led->name;
2463         led->led_dev.default_trigger = trigger;
2464         led->led_dev.brightness_set = p54_led_brightness_set;
2465
2466         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2467         if (err)
2468                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2469                         wiphy_name(dev->wiphy), name);
2470         else
2471                 led->registered = 1;
2472
2473         return err;
2474 }
2475
2476 static int p54_init_leds(struct ieee80211_hw *dev)
2477 {
2478         struct p54_common *priv = dev->priv;
2479         int err;
2480
2481         /*
2482          * TODO:
2483          * Figure out if the EEPROM contains some hints about the number
2484          * of available/programmable LEDs of the device.
2485          * But for now, we can assume that we have two programmable LEDs.
2486          */
2487
2488         err = p54_register_led(dev, &priv->assoc_led, 0, "assoc",
2489                                ieee80211_get_assoc_led_name(dev));
2490         if (err)
2491                 return err;
2492
2493         err = p54_register_led(dev, &priv->tx_led, 1, "tx",
2494                                ieee80211_get_tx_led_name(dev));
2495         if (err)
2496                 return err;
2497
2498         err = p54_set_leds(dev);
2499         return err;
2500 }
2501
2502 static void p54_unregister_leds(struct ieee80211_hw *dev)
2503 {
2504         struct p54_common *priv = dev->priv;
2505
2506         if (priv->tx_led.registered)
2507                 led_classdev_unregister(&priv->tx_led.led_dev);
2508         if (priv->assoc_led.registered)
2509                 led_classdev_unregister(&priv->assoc_led.led_dev);
2510 }
2511 #endif /* CONFIG_P54_LEDS */
2512
2513 static const struct ieee80211_ops p54_ops = {
2514         .tx                     = p54_tx,
2515         .start                  = p54_start,
2516         .stop                   = p54_stop,
2517         .add_interface          = p54_add_interface,
2518         .remove_interface       = p54_remove_interface,
2519         .set_tim                = p54_set_tim,
2520         .sta_notify             = p54_sta_notify,
2521         .set_key                = p54_set_key,
2522         .config                 = p54_config,
2523         .config_interface       = p54_config_interface,
2524         .bss_info_changed       = p54_bss_info_changed,
2525         .configure_filter       = p54_configure_filter,
2526         .conf_tx                = p54_conf_tx,
2527         .get_stats              = p54_get_stats,
2528         .get_tx_stats           = p54_get_tx_stats
2529 };
2530
2531 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2532 {
2533         struct ieee80211_hw *dev;
2534         struct p54_common *priv;
2535
2536         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2537         if (!dev)
2538                 return NULL;
2539
2540         priv = dev->priv;
2541         priv->hw = dev;
2542         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2543         priv->basic_rate_mask = 0x15f;
2544         skb_queue_head_init(&priv->tx_queue);
2545         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2546                      IEEE80211_HW_SUPPORTS_PS |
2547                      IEEE80211_HW_PS_NULLFUNC_STACK |
2548                      IEEE80211_HW_SIGNAL_DBM |
2549                      IEEE80211_HW_NOISE_DBM;
2550
2551         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2552                                       BIT(NL80211_IFTYPE_ADHOC) |
2553                                       BIT(NL80211_IFTYPE_AP) |
2554                                       BIT(NL80211_IFTYPE_MESH_POINT);
2555
2556         dev->channel_change_time = 1000;        /* TODO: find actual value */
2557         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2558         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2559         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2560         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2561         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2562         dev->queues = 1;
2563         priv->noise = -94;
2564         /*
2565          * We support at most 8 tries no matter which rate they're at,
2566          * we cannot support max_rates * max_rate_tries as we set it
2567          * here, but setting it correctly to 4/2 or so would limit us
2568          * artificially if the RC algorithm wants just two rates, so
2569          * let's say 4/7, we'll redistribute it at TX time, see the
2570          * comments there.
2571          */
2572         dev->max_rates = 4;
2573         dev->max_rate_tries = 7;
2574         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2575                                  sizeof(struct p54_tx_data);
2576
2577         mutex_init(&priv->conf_mutex);
2578         init_completion(&priv->eeprom_comp);
2579         INIT_DELAYED_WORK(&priv->work, p54_work);
2580
2581         return dev;
2582 }
2583 EXPORT_SYMBOL_GPL(p54_init_common);
2584
2585 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2586 {
2587         int err;
2588
2589         err = ieee80211_register_hw(dev);
2590         if (err) {
2591                 dev_err(pdev, "Cannot register device (%d).\n", err);
2592                 return err;
2593         }
2594
2595 #ifdef CONFIG_P54_LEDS
2596         err = p54_init_leds(dev);
2597         if (err)
2598                 return err;
2599 #endif /* CONFIG_P54_LEDS */
2600
2601         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2602         return 0;
2603 }
2604 EXPORT_SYMBOL_GPL(p54_register_common);
2605
2606 void p54_free_common(struct ieee80211_hw *dev)
2607 {
2608         struct p54_common *priv = dev->priv;
2609         kfree(priv->iq_autocal);
2610         kfree(priv->output_limit);
2611         kfree(priv->curve_data);
2612
2613 #ifdef CONFIG_P54_LEDS
2614         p54_unregister_leds(dev);
2615 #endif /* CONFIG_P54_LEDS */
2616 }
2617 EXPORT_SYMBOL_GPL(p54_free_common);
2618
2619 static int __init p54_init(void)
2620 {
2621         return 0;
2622 }
2623
2624 static void __exit p54_exit(void)
2625 {
2626 }
2627
2628 module_init(p54_init);
2629 module_exit(p54_exit);