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_common *priv = dev->priv;
1048         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1049         struct p54_trap *trap = (struct p54_trap *) hdr->data;
1050         u16 event = le16_to_cpu(trap->event);
1051         u16 freq = le16_to_cpu(trap->frequency);
1052
1053         switch (event) {
1054         case P54_TRAP_BEACON_TX:
1055                 break;
1056         case P54_TRAP_RADAR:
1057                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
1058                         wiphy_name(dev->wiphy), freq);
1059                 break;
1060         case P54_TRAP_NO_BEACON:
1061                 if (priv->vif)
1062                         ieee80211_beacon_loss(priv->vif);
1063                 break;
1064         case P54_TRAP_SCAN:
1065                 break;
1066         case P54_TRAP_TBTT:
1067                 break;
1068         case P54_TRAP_TIMER:
1069                 break;
1070         default:
1071                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
1072                        wiphy_name(dev->wiphy), event, freq);
1073                 break;
1074         }
1075 }
1076
1077 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
1078 {
1079         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
1080
1081         switch (le16_to_cpu(hdr->type)) {
1082         case P54_CONTROL_TYPE_TXDONE:
1083                 p54_rx_frame_sent(dev, skb);
1084                 break;
1085         case P54_CONTROL_TYPE_TRAP:
1086                 p54_rx_trap(dev, skb);
1087                 break;
1088         case P54_CONTROL_TYPE_BBP:
1089                 break;
1090         case P54_CONTROL_TYPE_STAT_READBACK:
1091                 p54_rx_stats(dev, skb);
1092                 break;
1093         case P54_CONTROL_TYPE_EEPROM_READBACK:
1094                 p54_rx_eeprom_readback(dev, skb);
1095                 break;
1096         default:
1097                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
1098                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
1099                 break;
1100         }
1101
1102         return 0;
1103 }
1104
1105 /* returns zero if skb can be reused */
1106 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
1107 {
1108         u16 type = le16_to_cpu(*((__le16 *)skb->data));
1109
1110         if (type & P54_HDR_FLAG_CONTROL)
1111                 return p54_rx_control(dev, skb);
1112         else
1113                 return p54_rx_data(dev, skb);
1114 }
1115 EXPORT_SYMBOL_GPL(p54_rx);
1116
1117 /*
1118  * So, the firmware is somewhat stupid and doesn't know what places in its
1119  * memory incoming data should go to. By poking around in the firmware, we
1120  * can find some unused memory to upload our packets to. However, data that we
1121  * want the card to TX needs to stay intact until the card has told us that
1122  * it is done with it. This function finds empty places we can upload to and
1123  * marks allocated areas as reserved if necessary. p54_rx_frame_sent or
1124  * p54_free_skb frees allocated areas.
1125  */
1126 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1127                                struct p54_hdr *data, u32 len)
1128 {
1129         struct p54_common *priv = dev->priv;
1130         struct sk_buff *entry;
1131         struct sk_buff *target_skb = NULL;
1132         struct ieee80211_tx_info *info;
1133         struct p54_tx_info *range;
1134         u32 last_addr = priv->rx_start;
1135         u32 largest_hole = 0;
1136         u32 target_addr = priv->rx_start;
1137         unsigned long flags;
1138         unsigned int left;
1139         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1140
1141         if (!skb)
1142                 return -EINVAL;
1143
1144         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1145
1146         left = skb_queue_len(&priv->tx_queue);
1147         if (unlikely(left >= 28)) {
1148                 /*
1149                  * The tx_queue is nearly full!
1150                  * We have throttle normal data traffic, because we must
1151                  * have a few spare slots for control frames left.
1152                  */
1153                 ieee80211_stop_queues(dev);
1154                 queue_delayed_work(dev->workqueue, &priv->work,
1155                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1156
1157                 if (unlikely(left == 32)) {
1158                         /*
1159                          * The tx_queue is now really full.
1160                          *
1161                          * TODO: check if the device has crashed and reset it.
1162                          */
1163                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1164                         return -ENOSPC;
1165                 }
1166         }
1167
1168         entry = priv->tx_queue.next;
1169         while (left--) {
1170                 u32 hole_size;
1171                 info = IEEE80211_SKB_CB(entry);
1172                 range = (void *)info->rate_driver_data;
1173                 hole_size = range->start_addr - last_addr;
1174                 if (!target_skb && hole_size >= len) {
1175                         target_skb = entry->prev;
1176                         hole_size -= len;
1177                         target_addr = last_addr;
1178                 }
1179                 largest_hole = max(largest_hole, hole_size);
1180                 last_addr = range->end_addr;
1181                 entry = entry->next;
1182         }
1183         if (!target_skb && priv->rx_end - last_addr >= len) {
1184                 target_skb = priv->tx_queue.prev;
1185                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1186                 if (!skb_queue_empty(&priv->tx_queue)) {
1187                         info = IEEE80211_SKB_CB(target_skb);
1188                         range = (void *)info->rate_driver_data;
1189                         target_addr = range->end_addr;
1190                 }
1191         } else
1192                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1193
1194         if (!target_skb) {
1195                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1196                 ieee80211_stop_queues(dev);
1197                 return -ENOSPC;
1198         }
1199
1200         info = IEEE80211_SKB_CB(skb);
1201         range = (void *)info->rate_driver_data;
1202         range->start_addr = target_addr;
1203         range->end_addr = target_addr + len;
1204         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1205         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1206
1207         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1208                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1209                 ieee80211_stop_queues(dev);
1210
1211         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1212         return 0;
1213 }
1214
1215 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev, u16 hdr_flags,
1216                                      u16 payload_len, u16 type, gfp_t memflags)
1217 {
1218         struct p54_common *priv = dev->priv;
1219         struct p54_hdr *hdr;
1220         struct sk_buff *skb;
1221         size_t frame_len = sizeof(*hdr) + payload_len;
1222
1223         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
1224                 return NULL;
1225
1226         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
1227         if (!skb)
1228                 return NULL;
1229         skb_reserve(skb, priv->tx_hdr_len);
1230
1231         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1232         hdr->flags = cpu_to_le16(hdr_flags);
1233         hdr->len = cpu_to_le16(payload_len);
1234         hdr->type = cpu_to_le16(type);
1235         hdr->tries = hdr->rts_tries = 0;
1236
1237         if (p54_assign_address(dev, skb, hdr, frame_len)) {
1238                 kfree_skb(skb);
1239                 return NULL;
1240         }
1241         return skb;
1242 }
1243
1244 int p54_read_eeprom(struct ieee80211_hw *dev)
1245 {
1246         struct p54_common *priv = dev->priv;
1247         struct p54_eeprom_lm86 *eeprom_hdr;
1248         struct sk_buff *skb;
1249         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1250         int ret = -ENOMEM;
1251         void *eeprom = NULL;
1252
1253         maxblocksize = EEPROM_READBACK_LEN;
1254         if (priv->fw_var >= 0x509)
1255                 maxblocksize -= 0xc;
1256         else
1257                 maxblocksize -= 0x4;
1258
1259         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*eeprom_hdr) +
1260                             maxblocksize, P54_CONTROL_TYPE_EEPROM_READBACK,
1261                             GFP_KERNEL);
1262         if (!skb)
1263                 goto free;
1264         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1265         if (!priv->eeprom)
1266                 goto free;
1267         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1268         if (!eeprom)
1269                 goto free;
1270
1271         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1272                      sizeof(*eeprom_hdr) + maxblocksize);
1273
1274         while (eeprom_size) {
1275                 blocksize = min(eeprom_size, maxblocksize);
1276                 if (priv->fw_var < 0x509) {
1277                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1278                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1279                 } else {
1280                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1281                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1282                         eeprom_hdr->v2.magic2 = 0xf;
1283                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1284                 }
1285                 priv->tx(dev, skb);
1286
1287                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1288                         printk(KERN_ERR "%s: device does not respond!\n",
1289                                 wiphy_name(dev->wiphy));
1290                         ret = -EBUSY;
1291                         goto free;
1292                 }
1293
1294                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1295                 offset += blocksize;
1296                 eeprom_size -= blocksize;
1297         }
1298
1299         ret = p54_parse_eeprom(dev, eeprom, offset);
1300 free:
1301         kfree(priv->eeprom);
1302         priv->eeprom = NULL;
1303         p54_free_skb(dev, skb);
1304         kfree(eeprom);
1305
1306         return ret;
1307 }
1308 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1309
1310 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1311                 bool set)
1312 {
1313         struct p54_common *priv = dev->priv;
1314         struct sk_buff *skb;
1315         struct p54_tim *tim;
1316
1317         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
1318                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1319         if (!skb)
1320                 return -ENOMEM;
1321
1322         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1323         tim->count = 1;
1324         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1325         priv->tx(dev, skb);
1326         return 0;
1327 }
1328
1329 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1330 {
1331         struct p54_common *priv = dev->priv;
1332         struct sk_buff *skb;
1333         struct p54_sta_unlock *sta;
1334
1335         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
1336                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1337         if (!skb)
1338                 return -ENOMEM;
1339
1340         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1341         memcpy(sta->addr, addr, ETH_ALEN);
1342         priv->tx(dev, skb);
1343         return 0;
1344 }
1345
1346 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1347                               enum sta_notify_cmd notify_cmd,
1348                               struct ieee80211_sta *sta)
1349 {
1350         switch (notify_cmd) {
1351         case STA_NOTIFY_ADD:
1352         case STA_NOTIFY_REMOVE:
1353                 /*
1354                  * Notify the firmware that we don't want or we don't
1355                  * need to buffer frames for this station anymore.
1356                  */
1357
1358                 p54_sta_unlock(dev, sta->addr);
1359                 break;
1360         case STA_NOTIFY_AWAKE:
1361                 /* update the firmware's filter table */
1362                 p54_sta_unlock(dev, sta->addr);
1363                 break;
1364         default:
1365                 break;
1366         }
1367 }
1368
1369 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1370 {
1371         struct p54_common *priv = dev->priv;
1372         struct sk_buff *skb;
1373         struct p54_hdr *hdr;
1374         struct p54_txcancel *cancel;
1375
1376         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
1377                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1378         if (!skb)
1379                 return -ENOMEM;
1380
1381         hdr = (void *)entry->data;
1382         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1383         cancel->req_id = hdr->req_id;
1384         priv->tx(dev, skb);
1385         return 0;
1386 }
1387
1388 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1389                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1390                 u16 *flags, u16 *aid)
1391 {
1392         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1393         struct p54_common *priv = dev->priv;
1394         int ret = 1;
1395
1396         switch (priv->mode) {
1397         case NL80211_IFTYPE_MONITOR:
1398                 /*
1399                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1400                  * every frame in promiscuous/monitor mode.
1401                  * see STSW45x0C LMAC API - page 12.
1402                  */
1403                 *aid = 0;
1404                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1405                 *queue += P54_QUEUE_DATA;
1406                 break;
1407         case NL80211_IFTYPE_STATION:
1408                 *aid = 1;
1409                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1410                         *queue = P54_QUEUE_MGMT;
1411                         ret = 0;
1412                 } else
1413                         *queue += P54_QUEUE_DATA;
1414                 break;
1415         case NL80211_IFTYPE_AP:
1416         case NL80211_IFTYPE_ADHOC:
1417         case NL80211_IFTYPE_MESH_POINT:
1418                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1419                         *aid = 0;
1420                         *queue = P54_QUEUE_CAB;
1421                         return 0;
1422                 }
1423
1424                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1425                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1426                                 *aid = 0;
1427                                 *queue = P54_QUEUE_MGMT;
1428                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1429                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1430                                 return 0;
1431                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1432                                 *aid = 0;
1433
1434                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1435                                         /*
1436                                          * Injecting beacons on top of a AP is
1437                                          * not a good idea... nevertheless,
1438                                          * it should be doable.
1439                                          */
1440
1441                                         *queue += P54_QUEUE_DATA;
1442                                         return 1;
1443                                 }
1444
1445                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1446                                 *queue = P54_QUEUE_BEACON;
1447                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1448                                 return 0;
1449                         } else {
1450                                 *queue = P54_QUEUE_MGMT;
1451                                 ret = 0;
1452                         }
1453                 } else
1454                         *queue += P54_QUEUE_DATA;
1455
1456                 if (info->control.sta)
1457                         *aid = info->control.sta->aid;
1458                 else
1459                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1460                 break;
1461         }
1462         return ret;
1463 }
1464
1465 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1466 {
1467         switch (alg) {
1468         case ALG_WEP:
1469                 return P54_CRYPTO_WEP;
1470         case ALG_TKIP:
1471                 return P54_CRYPTO_TKIPMICHAEL;
1472         case ALG_CCMP:
1473                 return P54_CRYPTO_AESCCMP;
1474         default:
1475                 return 0;
1476         }
1477 }
1478
1479 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1480 {
1481         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1482         struct ieee80211_tx_queue_stats *current_queue;
1483         struct p54_common *priv = dev->priv;
1484         struct p54_hdr *hdr;
1485         struct p54_tx_data *txhdr;
1486         size_t padding, len, tim_len = 0;
1487         int i, j, ridx, ret;
1488         u16 hdr_flags = 0, aid = 0;
1489         u8 rate, queue, crypt_offset = 0;
1490         u8 cts_rate = 0x20;
1491         u8 rc_flags;
1492         u8 calculated_tries[4];
1493         u8 nrates = 0, nremaining = 8;
1494
1495         queue = skb_get_queue_mapping(skb);
1496
1497         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1498         current_queue = &priv->tx_stats[queue];
1499         if (unlikely((current_queue->len > current_queue->limit) && ret))
1500                 return NETDEV_TX_BUSY;
1501         current_queue->len++;
1502         current_queue->count++;
1503         if ((current_queue->len == current_queue->limit) && ret)
1504                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1505
1506         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1507         len = skb->len;
1508
1509         if (info->control.hw_key) {
1510                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1511                 if (info->control.hw_key->alg == ALG_TKIP) {
1512                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1513                         /*
1514                          * The firmware excepts that the IV has to have
1515                          * this special format
1516                          */
1517                         iv[1] = iv[0];
1518                         iv[0] = iv[2];
1519                         iv[2] = 0;
1520                 }
1521         }
1522
1523         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1524         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1525
1526         if (padding)
1527                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1528         hdr->type = cpu_to_le16(aid);
1529         hdr->rts_tries = info->control.rates[0].count;
1530
1531         /*
1532          * we register the rates in perfect order, and
1533          * RTS/CTS won't happen on 5 GHz
1534          */
1535         cts_rate = info->control.rts_cts_rate_idx;
1536
1537         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1538
1539         /* see how many rates got used */
1540         for (i = 0; i < 4; i++) {
1541                 if (info->control.rates[i].idx < 0)
1542                         break;
1543                 nrates++;
1544         }
1545
1546         /* limit tries to 8/nrates per rate */
1547         for (i = 0; i < nrates; i++) {
1548                 /*
1549                  * The magic expression here is equivalent to 8/nrates for
1550                  * all values that matter, but avoids division and jumps.
1551                  * Note that nrates can only take the values 1 through 4.
1552                  */
1553                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1554                                                  info->control.rates[i].count);
1555                 nremaining -= calculated_tries[i];
1556         }
1557
1558         /* if there are tries left, distribute from back to front */
1559         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1560                 int tmp = info->control.rates[i].count - calculated_tries[i];
1561
1562                 if (tmp <= 0)
1563                         continue;
1564                 /* RC requested more tries at this rate */
1565
1566                 tmp = min_t(int, tmp, nremaining);
1567                 calculated_tries[i] += tmp;
1568                 nremaining -= tmp;
1569         }
1570
1571         ridx = 0;
1572         for (i = 0; i < nrates && ridx < 8; i++) {
1573                 /* we register the rates in perfect order */
1574                 rate = info->control.rates[i].idx;
1575                 if (info->band == IEEE80211_BAND_5GHZ)
1576                         rate += 4;
1577
1578                 /* store the count we actually calculated for TX status */
1579                 info->control.rates[i].count = calculated_tries[i];
1580
1581                 rc_flags = info->control.rates[i].flags;
1582                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1583                         rate |= 0x10;
1584                         cts_rate |= 0x10;
1585                 }
1586                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1587                         rate |= 0x40;
1588                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1589                         rate |= 0x20;
1590                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1591                         txhdr->rateset[ridx] = rate;
1592                         ridx++;
1593                 }
1594         }
1595
1596         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1597                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1598
1599         /* TODO: enable bursting */
1600         hdr->flags = cpu_to_le16(hdr_flags);
1601         hdr->tries = ridx;
1602         txhdr->rts_rate_idx = 0;
1603         if (info->control.hw_key) {
1604                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1605                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1606                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1607                 if (info->control.hw_key->alg == ALG_TKIP) {
1608                         if (unlikely(skb_tailroom(skb) < 12))
1609                                 goto err;
1610                         /* reserve space for the MIC key */
1611                         len += 8;
1612                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1613                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1614                 }
1615                 /* reserve some space for ICV */
1616                 len += info->control.hw_key->icv_len;
1617                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1618                        info->control.hw_key->icv_len);
1619         } else {
1620                 txhdr->key_type = 0;
1621                 txhdr->key_len = 0;
1622         }
1623         txhdr->crypt_offset = crypt_offset;
1624         txhdr->hw_queue = queue;
1625         txhdr->backlog = current_queue->len;
1626         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1627         txhdr->tx_antenna = ((info->antenna_sel_tx == 0) ?
1628                 2 : info->antenna_sel_tx - 1) & priv->tx_diversity_mask;
1629         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1630                 txhdr->longbow.cts_rate = cts_rate;
1631                 txhdr->longbow.output_power = cpu_to_le16(priv->output_power);
1632         } else {
1633                 txhdr->normal.output_power = priv->output_power;
1634                 txhdr->normal.cts_rate = cts_rate;
1635         }
1636         if (padding)
1637                 txhdr->align[0] = padding;
1638
1639         hdr->len = cpu_to_le16(len);
1640         /* modifies skb->cb and with it info, so must be last! */
1641         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1642                 goto err;
1643         priv->tx(dev, skb);
1644
1645         queue_delayed_work(dev->workqueue, &priv->work,
1646                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1647
1648         return NETDEV_TX_OK;
1649
1650  err:
1651         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1652         current_queue->len--;
1653         current_queue->count--;
1654         return NETDEV_TX_BUSY;
1655 }
1656
1657 static int p54_setup_mac(struct ieee80211_hw *dev)
1658 {
1659         struct p54_common *priv = dev->priv;
1660         struct sk_buff *skb;
1661         struct p54_setup_mac *setup;
1662         u16 mode;
1663
1664         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
1665                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
1666         if (!skb)
1667                 return -ENOMEM;
1668
1669         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1670         if (dev->conf.radio_enabled) {
1671                 switch (priv->mode) {
1672                 case NL80211_IFTYPE_STATION:
1673                         mode = P54_FILTER_TYPE_STATION;
1674                         break;
1675                 case NL80211_IFTYPE_AP:
1676                         mode = P54_FILTER_TYPE_AP;
1677                         break;
1678                 case NL80211_IFTYPE_ADHOC:
1679                 case NL80211_IFTYPE_MESH_POINT:
1680                         mode = P54_FILTER_TYPE_IBSS;
1681                         break;
1682                 case NL80211_IFTYPE_MONITOR:
1683                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1684                         break;
1685                 default:
1686                         mode = P54_FILTER_TYPE_HIBERNATE;
1687                         break;
1688                 }
1689
1690                 /*
1691                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1692                  * STSW45X0C LMAC API - page 12
1693                  */
1694                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
1695                      (priv->filter_flags & FIF_OTHER_BSS)) &&
1696                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1697                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1698         } else
1699                 mode = P54_FILTER_TYPE_HIBERNATE;
1700
1701         setup->mac_mode = cpu_to_le16(mode);
1702         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1703         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1704         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
1705         setup->rx_align = 0;
1706         if (priv->fw_var < 0x500) {
1707                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1708                 memset(setup->v1.rts_rates, 0, 8);
1709                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1710                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1711                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1712                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1713                 setup->v1.unalloc0 = cpu_to_le16(0);
1714         } else {
1715                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1716                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1717                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1718                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1719                 setup->v2.truncate = cpu_to_le16(48896);
1720                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1721                 setup->v2.sbss_offset = 0;
1722                 setup->v2.mcast_window = 0;
1723                 setup->v2.rx_rssi_threshold = 0;
1724                 setup->v2.rx_ed_threshold = 0;
1725                 setup->v2.ref_clock = cpu_to_le32(644245094);
1726                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1727                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1728         }
1729         priv->tx(dev, skb);
1730         return 0;
1731 }
1732
1733 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1734 {
1735         struct p54_common *priv = dev->priv;
1736         struct sk_buff *skb;
1737         struct p54_hdr *hdr;
1738         struct p54_scan_head *head;
1739         struct p54_iq_autocal_entry *iq_autocal;
1740         union p54_scan_body_union *body;
1741         struct p54_scan_tail_rate *rate;
1742         struct pda_rssi_cal_entry *rssi;
1743         unsigned int i;
1744         void *entry;
1745         int band = dev->conf.channel->band;
1746         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1747
1748         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
1749                             2 + sizeof(*iq_autocal) + sizeof(*body) +
1750                             sizeof(*rate) + 2 * sizeof(*rssi),
1751                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
1752         if (!skb)
1753                 return -ENOMEM;
1754
1755         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
1756         memset(head->scan_params, 0, sizeof(head->scan_params));
1757         head->mode = cpu_to_le16(mode);
1758         head->dwell = cpu_to_le16(dwell);
1759         head->freq = freq;
1760
1761         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1762                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
1763                 *pa_power_points = cpu_to_le16(0x0c);
1764         }
1765
1766         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
1767         for (i = 0; i < priv->iq_autocal_len; i++) {
1768                 if (priv->iq_autocal[i].freq != freq)
1769                         continue;
1770
1771                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
1772                        sizeof(struct p54_iq_autocal_entry));
1773                 break;
1774         }
1775         if (i == priv->iq_autocal_len)
1776                 goto err;
1777
1778         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
1779                 body = (void *) skb_put(skb, sizeof(body->longbow));
1780         else
1781                 body = (void *) skb_put(skb, sizeof(body->normal));
1782
1783         for (i = 0; i < priv->output_limit->entries; i++) {
1784                 __le16 *entry_freq = (void *) (priv->output_limit->data +
1785                                      priv->output_limit->entry_size * i);
1786
1787                 if (*entry_freq != freq)
1788                         continue;
1789
1790                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1791                         memcpy(&body->longbow.power_limits,
1792                                (void *) entry_freq + sizeof(__le16),
1793                                priv->output_limit->entry_size);
1794                 } else {
1795                         struct pda_channel_output_limit *limits =
1796                                (void *) entry_freq;
1797
1798                         body->normal.val_barker = 0x38;
1799                         body->normal.val_bpsk = body->normal.dup_bpsk =
1800                                 limits->val_bpsk;
1801                         body->normal.val_qpsk = body->normal.dup_qpsk =
1802                                 limits->val_qpsk;
1803                         body->normal.val_16qam = body->normal.dup_16qam =
1804                                 limits->val_16qam;
1805                         body->normal.val_64qam = body->normal.dup_64qam =
1806                                 limits->val_64qam;
1807                 }
1808                 break;
1809         }
1810         if (i == priv->output_limit->entries)
1811                 goto err;
1812
1813         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
1814         for (i = 0; i < priv->curve_data->entries; i++) {
1815                 if (*((__le16 *)entry) != freq) {
1816                         entry += priv->curve_data->entry_size;
1817                         continue;
1818                 }
1819
1820                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1821                         memcpy(&body->longbow.curve_data,
1822                                 (void *) entry + sizeof(__le16),
1823                                 priv->curve_data->entry_size);
1824                 } else {
1825                         struct p54_scan_body *chan = &body->normal;
1826                         struct pda_pa_curve_data *curve_data =
1827                                 (void *) priv->curve_data->data;
1828
1829                         entry += sizeof(__le16);
1830                         chan->pa_points_per_curve = 8;
1831                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1832                         memcpy(chan->curve_data, entry,
1833                                sizeof(struct p54_pa_curve_data_sample) *
1834                                min((u8)8, curve_data->points_per_channel));
1835                 }
1836                 break;
1837         }
1838         if (i == priv->curve_data->entries)
1839                 goto err;
1840
1841         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
1842                 rate = (void *) skb_put(skb, sizeof(*rate));
1843                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1844                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1845                         rate->rts_rates[i] = i;
1846         }
1847
1848         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
1849         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
1850         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
1851         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
1852                 /* Longbow frontend needs ever more */
1853                 rssi = (void *) skb_put(skb, sizeof(*rssi));
1854                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
1855                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
1856         }
1857
1858         if (priv->fw_var >= 0x509) {
1859                 rate = (void *) skb_put(skb, sizeof(*rate));
1860                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1861                 for (i = 0; i < sizeof(rate->rts_rates); i++)
1862                         rate->rts_rates[i] = i;
1863         }
1864
1865         hdr = (struct p54_hdr *) skb->data;
1866         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
1867
1868         priv->tx(dev, skb);
1869         return 0;
1870
1871  err:
1872         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1873         p54_free_skb(dev, skb);
1874         return -EINVAL;
1875 }
1876
1877 static int p54_set_leds(struct ieee80211_hw *dev)
1878 {
1879         struct p54_common *priv = dev->priv;
1880         struct sk_buff *skb;
1881         struct p54_led *led;
1882
1883         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
1884                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
1885         if (!skb)
1886                 return -ENOMEM;
1887
1888         led = (struct p54_led *) skb_put(skb, sizeof(*led));
1889         led->flags = cpu_to_le16(0x0003);
1890         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
1891         led->delay[0] = cpu_to_le16(1);
1892         led->delay[1] = cpu_to_le16(0);
1893         priv->tx(dev, skb);
1894         return 0;
1895 }
1896
1897 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1898 do {                                                            \
1899         queue.aifs = cpu_to_le16(ai_fs);                        \
1900         queue.cwmin = cpu_to_le16(cw_min);                      \
1901         queue.cwmax = cpu_to_le16(cw_max);                      \
1902         queue.txop = cpu_to_le16(_txop);                        \
1903 } while(0)
1904
1905 static int p54_set_edcf(struct ieee80211_hw *dev)
1906 {
1907         struct p54_common *priv = dev->priv;
1908         struct sk_buff *skb;
1909         struct p54_edcf *edcf;
1910
1911         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
1912                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
1913         if (!skb)
1914                 return -ENOMEM;
1915
1916         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1917         if (priv->use_short_slot) {
1918                 edcf->slottime = 9;
1919                 edcf->sifs = 0x10;
1920                 edcf->eofpad = 0x00;
1921         } else {
1922                 edcf->slottime = 20;
1923                 edcf->sifs = 0x0a;
1924                 edcf->eofpad = 0x06;
1925         }
1926         /* (see prism54/isl_oid.h for further details) */
1927         edcf->frameburst = cpu_to_le16(0);
1928         edcf->round_trip_delay = cpu_to_le16(0);
1929         edcf->flags = 0;
1930         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1931         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1932         priv->tx(dev, skb);
1933         return 0;
1934 }
1935
1936 static int p54_set_ps(struct ieee80211_hw *dev)
1937 {
1938         struct p54_common *priv = dev->priv;
1939         struct sk_buff *skb;
1940         struct p54_psm *psm;
1941         u16 mode;
1942         int i;
1943
1944         if (dev->conf.flags & IEEE80211_CONF_PS)
1945                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
1946                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
1947         else
1948                 mode = P54_PSM_CAM;
1949
1950         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
1951                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
1952         if (!skb)
1953                 return -ENOMEM;
1954
1955         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
1956         psm->mode = cpu_to_le16(mode);
1957         psm->aid = cpu_to_le16(priv->aid);
1958         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
1959                 psm->intervals[i].interval =
1960                         cpu_to_le16(dev->conf.listen_interval);
1961                 psm->intervals[i].periods = cpu_to_le16(1);
1962         }
1963
1964         psm->beacon_rssi_skip_max = 200;
1965         psm->rssi_delta_threshold = 0;
1966         psm->nr = 10;
1967         psm->exclude[0] = 0;
1968
1969         priv->tx(dev, skb);
1970
1971         return 0;
1972 }
1973
1974 static int p54_beacon_tim(struct sk_buff *skb)
1975 {
1976         /*
1977          * the good excuse for this mess is ... the firmware.
1978          * The dummy TIM MUST be at the end of the beacon frame,
1979          * because it'll be overwritten!
1980          */
1981
1982         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1983         u8 *pos, *end;
1984
1985         if (skb->len <= sizeof(mgmt))
1986                 return -EINVAL;
1987
1988         pos = (u8 *)mgmt->u.beacon.variable;
1989         end = skb->data + skb->len;
1990         while (pos < end) {
1991                 if (pos + 2 + pos[1] > end)
1992                         return -EINVAL;
1993
1994                 if (pos[0] == WLAN_EID_TIM) {
1995                         u8 dtim_len = pos[1];
1996                         u8 dtim_period = pos[3];
1997                         u8 *next = pos + 2 + dtim_len;
1998
1999                         if (dtim_len < 3)
2000                                 return -EINVAL;
2001
2002                         memmove(pos, next, end - next);
2003
2004                         if (dtim_len > 3)
2005                                 skb_trim(skb, skb->len - (dtim_len - 3));
2006
2007                         pos = end - (dtim_len + 2);
2008
2009                         /* add the dummy at the end */
2010                         pos[0] = WLAN_EID_TIM;
2011                         pos[1] = 3;
2012                         pos[2] = 0;
2013                         pos[3] = dtim_period;
2014                         pos[4] = 0;
2015                         return 0;
2016                 }
2017                 pos += 2 + pos[1];
2018         }
2019         return 0;
2020 }
2021
2022 static int p54_beacon_update(struct ieee80211_hw *dev,
2023                         struct ieee80211_vif *vif)
2024 {
2025         struct p54_common *priv = dev->priv;
2026         struct sk_buff *beacon;
2027         int ret;
2028
2029         if (priv->cached_beacon) {
2030                 p54_tx_cancel(dev, priv->cached_beacon);
2031                 /* wait for the last beacon the be freed */
2032                 msleep(10);
2033         }
2034
2035         beacon = ieee80211_beacon_get(dev, vif);
2036         if (!beacon)
2037                 return -ENOMEM;
2038         ret = p54_beacon_tim(beacon);
2039         if (ret)
2040                 return ret;
2041         ret = p54_tx(dev, beacon);
2042         if (ret)
2043                 return ret;
2044         priv->cached_beacon = beacon;
2045         priv->tsf_high32 = 0;
2046         priv->tsf_low32 = 0;
2047
2048         return 0;
2049 }
2050
2051 static int p54_start(struct ieee80211_hw *dev)
2052 {
2053         struct p54_common *priv = dev->priv;
2054         int err;
2055
2056         mutex_lock(&priv->conf_mutex);
2057         err = priv->open(dev);
2058         if (err)
2059                 goto out;
2060         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
2061         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
2062         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
2063         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
2064         err = p54_set_edcf(dev);
2065         if (err)
2066                 goto out;
2067
2068         memset(priv->bssid, ~0, ETH_ALEN);
2069         priv->mode = NL80211_IFTYPE_MONITOR;
2070         err = p54_setup_mac(dev);
2071         if (err) {
2072                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2073                 goto out;
2074         }
2075
2076         queue_delayed_work(dev->workqueue, &priv->work, 0);
2077
2078         priv->softled_state = 0;
2079         err = p54_set_leds(dev);
2080
2081 out:
2082         mutex_unlock(&priv->conf_mutex);
2083         return err;
2084 }
2085
2086 static void p54_stop(struct ieee80211_hw *dev)
2087 {
2088         struct p54_common *priv = dev->priv;
2089         struct sk_buff *skb;
2090
2091         mutex_lock(&priv->conf_mutex);
2092         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2093         priv->softled_state = 0;
2094         p54_set_leds(dev);
2095
2096 #ifdef CONFIG_P54_LEDS
2097         cancel_delayed_work_sync(&priv->led_work);
2098 #endif /* CONFIG_P54_LEDS */
2099         cancel_delayed_work_sync(&priv->work);
2100         if (priv->cached_beacon)
2101                 p54_tx_cancel(dev, priv->cached_beacon);
2102
2103         priv->stop(dev);
2104         while ((skb = skb_dequeue(&priv->tx_queue)))
2105                 kfree_skb(skb);
2106         priv->cached_beacon = NULL;
2107         priv->tsf_high32 = priv->tsf_low32 = 0;
2108         mutex_unlock(&priv->conf_mutex);
2109 }
2110
2111 static int p54_add_interface(struct ieee80211_hw *dev,
2112                              struct ieee80211_if_init_conf *conf)
2113 {
2114         struct p54_common *priv = dev->priv;
2115
2116         mutex_lock(&priv->conf_mutex);
2117         if (priv->mode != NL80211_IFTYPE_MONITOR) {
2118                 mutex_unlock(&priv->conf_mutex);
2119                 return -EOPNOTSUPP;
2120         }
2121
2122         priv->vif = conf->vif;
2123
2124         switch (conf->type) {
2125         case NL80211_IFTYPE_STATION:
2126         case NL80211_IFTYPE_ADHOC:
2127         case NL80211_IFTYPE_AP:
2128         case NL80211_IFTYPE_MESH_POINT:
2129                 priv->mode = conf->type;
2130                 break;
2131         default:
2132                 mutex_unlock(&priv->conf_mutex);
2133                 return -EOPNOTSUPP;
2134         }
2135
2136         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2137         p54_setup_mac(dev);
2138         mutex_unlock(&priv->conf_mutex);
2139         return 0;
2140 }
2141
2142 static void p54_remove_interface(struct ieee80211_hw *dev,
2143                                  struct ieee80211_if_init_conf *conf)
2144 {
2145         struct p54_common *priv = dev->priv;
2146
2147         mutex_lock(&priv->conf_mutex);
2148         priv->vif = NULL;
2149         if (priv->cached_beacon)
2150                 p54_tx_cancel(dev, priv->cached_beacon);
2151         priv->mode = NL80211_IFTYPE_MONITOR;
2152         memset(priv->mac_addr, 0, ETH_ALEN);
2153         memset(priv->bssid, 0, ETH_ALEN);
2154         p54_setup_mac(dev);
2155         mutex_unlock(&priv->conf_mutex);
2156 }
2157
2158 static int p54_config(struct ieee80211_hw *dev, u32 changed)
2159 {
2160         int ret = 0;
2161         struct p54_common *priv = dev->priv;
2162         struct ieee80211_conf *conf = &dev->conf;
2163
2164         mutex_lock(&priv->conf_mutex);
2165         if (changed & IEEE80211_CONF_CHANGE_POWER)
2166                 priv->output_power = conf->power_level << 2;
2167         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
2168                 ret = p54_setup_mac(dev);
2169                 if (ret)
2170                         goto out;
2171         }
2172         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2173                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2174                 if (ret)
2175                         goto out;
2176         }
2177         if (changed & IEEE80211_CONF_CHANGE_PS) {
2178                 ret = p54_set_ps(dev);
2179                 if (ret)
2180                         goto out;
2181         }
2182
2183 out:
2184         mutex_unlock(&priv->conf_mutex);
2185         return ret;
2186 }
2187
2188 static int p54_config_interface(struct ieee80211_hw *dev,
2189                                 struct ieee80211_vif *vif,
2190                                 struct ieee80211_if_conf *conf)
2191 {
2192         struct p54_common *priv = dev->priv;
2193         int ret = 0;
2194
2195         mutex_lock(&priv->conf_mutex);
2196         if (conf->changed & IEEE80211_IFCC_BSSID) {
2197                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2198                 ret = p54_setup_mac(dev);
2199                 if (ret)
2200                         goto out;
2201         }
2202
2203         if (conf->changed & IEEE80211_IFCC_BEACON) {
2204                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
2205                 if (ret)
2206                         goto out;
2207                 ret = p54_setup_mac(dev);
2208                 if (ret)
2209                         goto out;
2210                 ret = p54_beacon_update(dev, vif);
2211                 if (ret)
2212                         goto out;
2213                 ret = p54_set_edcf(dev);
2214                 if (ret)
2215                         goto out;
2216         }
2217
2218 out:
2219         mutex_unlock(&priv->conf_mutex);
2220         return ret;
2221 }
2222
2223 static void p54_configure_filter(struct ieee80211_hw *dev,
2224                                  unsigned int changed_flags,
2225                                  unsigned int *total_flags,
2226                                  int mc_count, struct dev_mc_list *mclist)
2227 {
2228         struct p54_common *priv = dev->priv;
2229
2230         *total_flags &= FIF_PROMISC_IN_BSS |
2231                         FIF_OTHER_BSS;
2232
2233         priv->filter_flags = *total_flags;
2234
2235         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS))
2236                 p54_setup_mac(dev);
2237 }
2238
2239 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2240                        const struct ieee80211_tx_queue_params *params)
2241 {
2242         struct p54_common *priv = dev->priv;
2243         int ret;
2244
2245         mutex_lock(&priv->conf_mutex);
2246         if ((params) && !(queue > 4)) {
2247                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2248                         params->cw_min, params->cw_max, params->txop);
2249                 ret = p54_set_edcf(dev);
2250         } else
2251                 ret = -EINVAL;
2252         mutex_unlock(&priv->conf_mutex);
2253         return ret;
2254 }
2255
2256 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2257 {
2258         struct p54_common *priv = dev->priv;
2259         struct sk_buff *skb;
2260         struct p54_xbow_synth *xbow;
2261
2262         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
2263                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
2264         if (!skb)
2265                 return -ENOMEM;
2266
2267         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2268         xbow->magic1 = cpu_to_le16(0x1);
2269         xbow->magic2 = cpu_to_le16(0x2);
2270         xbow->freq = cpu_to_le16(5390);
2271         memset(xbow->padding, 0, sizeof(xbow->padding));
2272         priv->tx(dev, skb);
2273         return 0;
2274 }
2275
2276 static void p54_work(struct work_struct *work)
2277 {
2278         struct p54_common *priv = container_of(work, struct p54_common,
2279                                                work.work);
2280         struct ieee80211_hw *dev = priv->hw;
2281         struct sk_buff *skb;
2282
2283         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2284                 return ;
2285
2286         /*
2287          * TODO: walk through tx_queue and do the following tasks
2288          *      1. initiate bursts.
2289          *      2. cancel stuck frames / reset the device if necessary.
2290          */
2291
2292         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL,
2293                             sizeof(struct p54_statistics),
2294                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2295         if (!skb)
2296                 return ;
2297
2298         priv->tx(dev, skb);
2299 }
2300
2301 static int p54_get_stats(struct ieee80211_hw *dev,
2302                          struct ieee80211_low_level_stats *stats)
2303 {
2304         struct p54_common *priv = dev->priv;
2305
2306         memcpy(stats, &priv->stats, sizeof(*stats));
2307         return 0;
2308 }
2309
2310 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2311                             struct ieee80211_tx_queue_stats *stats)
2312 {
2313         struct p54_common *priv = dev->priv;
2314
2315         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2316                sizeof(stats[0]) * dev->queues);
2317         return 0;
2318 }
2319
2320 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2321                                  struct ieee80211_vif *vif,
2322                                  struct ieee80211_bss_conf *info,
2323                                  u32 changed)
2324 {
2325         struct p54_common *priv = dev->priv;
2326
2327         if (changed & BSS_CHANGED_ERP_SLOT) {
2328                 priv->use_short_slot = info->use_short_slot;
2329                 p54_set_edcf(dev);
2330         }
2331         if (changed & BSS_CHANGED_BASIC_RATES) {
2332                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2333                         priv->basic_rate_mask = (info->basic_rates << 4);
2334                 else
2335                         priv->basic_rate_mask = info->basic_rates;
2336                 p54_setup_mac(dev);
2337                 if (priv->fw_var >= 0x500)
2338                         p54_scan(dev, P54_SCAN_EXIT, 0);
2339         }
2340         if (changed & BSS_CHANGED_ASSOC) {
2341                 if (info->assoc) {
2342                         priv->aid = info->aid;
2343                         priv->wakeup_timer = info->beacon_int *
2344                                              info->dtim_period * 5;
2345                         p54_setup_mac(dev);
2346                 }
2347         }
2348
2349 }
2350
2351 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2352                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2353                        struct ieee80211_key_conf *key)
2354 {
2355         struct p54_common *priv = dev->priv;
2356         struct sk_buff *skb;
2357         struct p54_keycache *rxkey;
2358         u8 algo = 0;
2359
2360         if (modparam_nohwcrypt)
2361                 return -EOPNOTSUPP;
2362
2363         if (cmd == DISABLE_KEY)
2364                 algo = 0;
2365         else {
2366                 switch (key->alg) {
2367                 case ALG_TKIP:
2368                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2369                               BR_DESC_PRIV_CAP_TKIP)))
2370                                 return -EOPNOTSUPP;
2371                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2372                         algo = P54_CRYPTO_TKIPMICHAEL;
2373                         break;
2374                 case ALG_WEP:
2375                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2376                                 return -EOPNOTSUPP;
2377                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2378                         algo = P54_CRYPTO_WEP;
2379                         break;
2380                 case ALG_CCMP:
2381                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2382                                 return -EOPNOTSUPP;
2383                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2384                         algo = P54_CRYPTO_AESCCMP;
2385                         break;
2386                 default:
2387                         return -EOPNOTSUPP;
2388                 }
2389         }
2390
2391         if (key->keyidx > priv->rx_keycache_size) {
2392                 /*
2393                  * The device supports the choosen algorithm, but the firmware
2394                  * does not provide enough key slots to store all of them.
2395                  * So, incoming frames have to be decoded by the mac80211 stack,
2396                  * but we can still offload encryption for outgoing frames.
2397                  */
2398
2399                 return 0;
2400         }
2401
2402         mutex_lock(&priv->conf_mutex);
2403         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
2404                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_ATOMIC);
2405         if (!skb) {
2406                 mutex_unlock(&priv->conf_mutex);
2407                 return -ENOMEM;
2408         }
2409
2410         /* TODO: some devices have 4 more free slots for rx keys */
2411         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2412         rxkey->entry = key->keyidx;
2413         rxkey->key_id = key->keyidx;
2414         rxkey->key_type = algo;
2415         if (sta)
2416                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2417         else
2418                 memset(rxkey->mac, ~0, ETH_ALEN);
2419         if (key->alg != ALG_TKIP) {
2420                 rxkey->key_len = min((u8)16, key->keylen);
2421                 memcpy(rxkey->key, key->key, rxkey->key_len);
2422         } else {
2423                 rxkey->key_len = 24;
2424                 memcpy(rxkey->key, key->key, 16);
2425                 memcpy(&(rxkey->key[16]), &(key->key
2426                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2427         }
2428
2429         priv->tx(dev, skb);
2430         mutex_unlock(&priv->conf_mutex);
2431         return 0;
2432 }
2433
2434 #ifdef CONFIG_P54_LEDS
2435 static void p54_update_leds(struct work_struct *work)
2436 {
2437         struct p54_common *priv = container_of(work, struct p54_common,
2438                                                led_work.work);
2439         int err, i, tmp, blink_delay = 400;
2440         bool rerun = false;
2441
2442         /* Don't toggle the LED, when the device is down. */
2443         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2444                 return ;
2445
2446         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2447                 if (priv->leds[i].toggled) {
2448                         priv->softled_state |= BIT(i);
2449
2450                         tmp = 70 + 200 / (priv->leds[i].toggled);
2451                         if (tmp < blink_delay)
2452                                 blink_delay = tmp;
2453
2454                         if (priv->leds[i].led_dev.brightness == LED_OFF)
2455                                 rerun = true;
2456
2457                         priv->leds[i].toggled =
2458                                 !!priv->leds[i].led_dev.brightness;
2459                 } else
2460                         priv->softled_state &= ~BIT(i);
2461
2462         err = p54_set_leds(priv->hw);
2463         if (err && net_ratelimit())
2464                 printk(KERN_ERR "%s: failed to update LEDs.\n",
2465                         wiphy_name(priv->hw->wiphy));
2466
2467         if (rerun)
2468                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2469                         msecs_to_jiffies(blink_delay));
2470 }
2471
2472 static void p54_led_brightness_set(struct led_classdev *led_dev,
2473                                    enum led_brightness brightness)
2474 {
2475         struct p54_led_dev *led = container_of(led_dev, struct p54_led_dev,
2476                                                led_dev);
2477         struct ieee80211_hw *dev = led->hw_dev;
2478         struct p54_common *priv = dev->priv;
2479
2480         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2481                 return ;
2482
2483         if (brightness) {
2484                 led->toggled++;
2485                 queue_delayed_work(priv->hw->workqueue, &priv->led_work,
2486                                    HZ/10);
2487         }
2488 }
2489
2490 static int p54_register_led(struct ieee80211_hw *dev,
2491                             unsigned int led_index,
2492                             char *name, char *trigger)
2493 {
2494         struct p54_common *priv = dev->priv;
2495         struct p54_led_dev *led = &priv->leds[led_index];
2496         int err;
2497
2498         if (led->registered)
2499                 return -EEXIST;
2500
2501         snprintf(led->name, sizeof(led->name), "p54-%s::%s",
2502                  wiphy_name(dev->wiphy), name);
2503         led->hw_dev = dev;
2504         led->index = led_index;
2505         led->led_dev.name = led->name;
2506         led->led_dev.default_trigger = trigger;
2507         led->led_dev.brightness_set = p54_led_brightness_set;
2508
2509         err = led_classdev_register(wiphy_dev(dev->wiphy), &led->led_dev);
2510         if (err)
2511                 printk(KERN_ERR "%s: Failed to register %s LED.\n",
2512                         wiphy_name(dev->wiphy), name);
2513         else
2514                 led->registered = 1;
2515
2516         return err;
2517 }
2518
2519 static int p54_init_leds(struct ieee80211_hw *dev)
2520 {
2521         struct p54_common *priv = dev->priv;
2522         int err;
2523
2524         /*
2525          * TODO:
2526          * Figure out if the EEPROM contains some hints about the number
2527          * of available/programmable LEDs of the device.
2528          */
2529
2530         INIT_DELAYED_WORK(&priv->led_work, p54_update_leds);
2531
2532         err = p54_register_led(dev, 0, "assoc",
2533                                ieee80211_get_assoc_led_name(dev));
2534         if (err)
2535                 return err;
2536
2537         err = p54_register_led(dev, 1, "tx",
2538                                ieee80211_get_tx_led_name(dev));
2539         if (err)
2540                 return err;
2541
2542         err = p54_register_led(dev, 2, "rx",
2543                                ieee80211_get_rx_led_name(dev));
2544         if (err)
2545                 return err;
2546
2547         err = p54_register_led(dev, 3, "radio",
2548                                ieee80211_get_radio_led_name(dev));
2549         if (err)
2550                 return err;
2551
2552         err = p54_set_leds(dev);
2553         return err;
2554 }
2555
2556 static void p54_unregister_leds(struct ieee80211_hw *dev)
2557 {
2558         struct p54_common *priv = dev->priv;
2559         int i;
2560
2561         for (i = 0; i < ARRAY_SIZE(priv->leds); i++)
2562                 if (priv->leds[i].registered)
2563                         led_classdev_unregister(&priv->leds[i].led_dev);
2564 }
2565 #endif /* CONFIG_P54_LEDS */
2566
2567 static const struct ieee80211_ops p54_ops = {
2568         .tx                     = p54_tx,
2569         .start                  = p54_start,
2570         .stop                   = p54_stop,
2571         .add_interface          = p54_add_interface,
2572         .remove_interface       = p54_remove_interface,
2573         .set_tim                = p54_set_tim,
2574         .sta_notify             = p54_sta_notify,
2575         .set_key                = p54_set_key,
2576         .config                 = p54_config,
2577         .config_interface       = p54_config_interface,
2578         .bss_info_changed       = p54_bss_info_changed,
2579         .configure_filter       = p54_configure_filter,
2580         .conf_tx                = p54_conf_tx,
2581         .get_stats              = p54_get_stats,
2582         .get_tx_stats           = p54_get_tx_stats
2583 };
2584
2585 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2586 {
2587         struct ieee80211_hw *dev;
2588         struct p54_common *priv;
2589
2590         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2591         if (!dev)
2592                 return NULL;
2593
2594         priv = dev->priv;
2595         priv->hw = dev;
2596         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2597         priv->basic_rate_mask = 0x15f;
2598         skb_queue_head_init(&priv->tx_queue);
2599         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2600                      IEEE80211_HW_SIGNAL_DBM |
2601                      IEEE80211_HW_NOISE_DBM |
2602                      IEEE80211_HW_BEACON_FILTER;
2603
2604         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2605                                       BIT(NL80211_IFTYPE_ADHOC) |
2606                                       BIT(NL80211_IFTYPE_AP) |
2607                                       BIT(NL80211_IFTYPE_MESH_POINT);
2608
2609         dev->channel_change_time = 1000;        /* TODO: find actual value */
2610         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2611         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2612         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2613         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2614         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2615         dev->queues = 1;
2616         priv->noise = -94;
2617         /*
2618          * We support at most 8 tries no matter which rate they're at,
2619          * we cannot support max_rates * max_rate_tries as we set it
2620          * here, but setting it correctly to 4/2 or so would limit us
2621          * artificially if the RC algorithm wants just two rates, so
2622          * let's say 4/7, we'll redistribute it at TX time, see the
2623          * comments there.
2624          */
2625         dev->max_rates = 4;
2626         dev->max_rate_tries = 7;
2627         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2628                                  sizeof(struct p54_tx_data);
2629
2630         mutex_init(&priv->conf_mutex);
2631         init_completion(&priv->eeprom_comp);
2632         INIT_DELAYED_WORK(&priv->work, p54_work);
2633
2634         return dev;
2635 }
2636 EXPORT_SYMBOL_GPL(p54_init_common);
2637
2638 int p54_register_common(struct ieee80211_hw *dev, struct device *pdev)
2639 {
2640         int err;
2641
2642         err = ieee80211_register_hw(dev);
2643         if (err) {
2644                 dev_err(pdev, "Cannot register device (%d).\n", err);
2645                 return err;
2646         }
2647
2648 #ifdef CONFIG_P54_LEDS
2649         err = p54_init_leds(dev);
2650         if (err)
2651                 return err;
2652 #endif /* CONFIG_P54_LEDS */
2653
2654         dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy));
2655         return 0;
2656 }
2657 EXPORT_SYMBOL_GPL(p54_register_common);
2658
2659 void p54_free_common(struct ieee80211_hw *dev)
2660 {
2661         struct p54_common *priv = dev->priv;
2662         kfree(priv->iq_autocal);
2663         kfree(priv->output_limit);
2664         kfree(priv->curve_data);
2665
2666 #ifdef CONFIG_P54_LEDS
2667         p54_unregister_leds(dev);
2668 #endif /* CONFIG_P54_LEDS */
2669 }
2670 EXPORT_SYMBOL_GPL(p54_free_common);
2671
2672 static int __init p54_init(void)
2673 {
2674         return 0;
2675 }
2676
2677 static void __exit p54_exit(void)
2678 {
2679 }
2680
2681 module_init(p54_init);
2682 module_exit(p54_exit);