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

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24
  25 #include "p54.h"
  26 #include "p54common.h"
  27
  28 static int modparam_nohwcrypt;
  29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  32 MODULE_DESCRIPTION("Softmac Prism54 common code");
  33 MODULE_LICENSE("GPL");
  34 MODULE_ALIAS("prism54common");
  35
  36 static struct ieee80211_rate p54_bgrates[] = {
  37         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  38         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  39         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  40         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 60, .hw_value = 4, },
  42         { .bitrate = 90, .hw_value = 5, },
  43         { .bitrate = 120, .hw_value = 6, },
  44         { .bitrate = 180, .hw_value = 7, },
  45         { .bitrate = 240, .hw_value = 8, },
  46         { .bitrate = 360, .hw_value = 9, },
  47         { .bitrate = 480, .hw_value = 10, },
  48         { .bitrate = 540, .hw_value = 11, },
  49 };
  50
  51 static struct ieee80211_channel p54_bgchannels[] = {
  52         { .center_freq = 2412, .hw_value = 1, },
  53         { .center_freq = 2417, .hw_value = 2, },
  54         { .center_freq = 2422, .hw_value = 3, },
  55         { .center_freq = 2427, .hw_value = 4, },
  56         { .center_freq = 2432, .hw_value = 5, },
  57         { .center_freq = 2437, .hw_value = 6, },
  58         { .center_freq = 2442, .hw_value = 7, },
  59         { .center_freq = 2447, .hw_value = 8, },
  60         { .center_freq = 2452, .hw_value = 9, },
  61         { .center_freq = 2457, .hw_value = 10, },
  62         { .center_freq = 2462, .hw_value = 11, },
  63         { .center_freq = 2467, .hw_value = 12, },
  64         { .center_freq = 2472, .hw_value = 13, },
  65         { .center_freq = 2484, .hw_value = 14, },
  66 };
  67
  68 static struct ieee80211_supported_band band_2GHz = {
  69         .channels = p54_bgchannels,
  70         .n_channels = ARRAY_SIZE(p54_bgchannels),
  71         .bitrates = p54_bgrates,
  72         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  73 };
  74
  75 static struct ieee80211_rate p54_arates[] = {
  76         { .bitrate = 60, .hw_value = 4, },
  77         { .bitrate = 90, .hw_value = 5, },
  78         { .bitrate = 120, .hw_value = 6, },
  79         { .bitrate = 180, .hw_value = 7, },
  80         { .bitrate = 240, .hw_value = 8, },
  81         { .bitrate = 360, .hw_value = 9, },
  82         { .bitrate = 480, .hw_value = 10, },
  83         { .bitrate = 540, .hw_value = 11, },
  84 };
  85
  86 static struct ieee80211_channel p54_achannels[] = {
  87         { .center_freq = 4920 },
  88         { .center_freq = 4940 },
  89         { .center_freq = 4960 },
  90         { .center_freq = 4980 },
  91         { .center_freq = 5040 },
  92         { .center_freq = 5060 },
  93         { .center_freq = 5080 },
  94         { .center_freq = 5170 },
  95         { .center_freq = 5180 },
  96         { .center_freq = 5190 },
  97         { .center_freq = 5200 },
  98         { .center_freq = 5210 },
  99         { .center_freq = 5220 },
 100         { .center_freq = 5230 },
 101         { .center_freq = 5240 },
 102         { .center_freq = 5260 },
 103         { .center_freq = 5280 },
 104         { .center_freq = 5300 },
 105         { .center_freq = 5320 },
 106         { .center_freq = 5500 },
 107         { .center_freq = 5520 },
 108         { .center_freq = 5540 },
 109         { .center_freq = 5560 },
 110         { .center_freq = 5580 },
 111         { .center_freq = 5600 },
 112         { .center_freq = 5620 },
 113         { .center_freq = 5640 },
 114         { .center_freq = 5660 },
 115         { .center_freq = 5680 },
 116         { .center_freq = 5700 },
 117         { .center_freq = 5745 },
 118         { .center_freq = 5765 },
 119         { .center_freq = 5785 },
 120         { .center_freq = 5805 },
 121         { .center_freq = 5825 },
 122 };
 123
 124 static struct ieee80211_supported_band band_5GHz = {
 125         .channels = p54_achannels,
 126         .n_channels = ARRAY_SIZE(p54_achannels),
 127         .bitrates = p54_arates,
 128         .n_bitrates = ARRAY_SIZE(p54_arates),
 129 };
 130
 131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 132 {
 133         struct p54_common *priv = dev->priv;
 134         struct bootrec_exp_if *exp_if;
 135         struct bootrec *bootrec;
 136         u32 *data = (u32 *)fw->data;
 137         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 138         u8 *fw_version = NULL;
 139         size_t len;
 140         int i;
 141         int maxlen;
 142
 143         if (priv->rx_start)
 144                 return 0;
 145
 146         while (data < end_data && *data)
 147                 data++;
 148
 149         while (data < end_data && !*data)
 150                 data++;
 151
 152         bootrec = (struct bootrec *) data;
 153
 154         while (bootrec->data <= end_data &&
 155                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 156                 u32 code = le32_to_cpu(bootrec->code);
 157                 switch (code) {
 158                 case BR_CODE_COMPONENT_ID:
 159                         priv->fw_interface = be32_to_cpup((__be32 *)
 160                                              bootrec->data);
 161                         switch (priv->fw_interface) {
 162                         case FW_LM86:
 163                         case FW_LM20:
 164                         case FW_LM87: {
 165                                 char *iftype = (char *)bootrec->data;
 166                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 167                                                  "firmware\n",
 168                                         wiphy_name(dev->wiphy),
 169                                         iftype[2], iftype[3]);
 170                                 break;
 171                                 }
 172                         case FW_FMAC:
 173                         default:
 174                                 printk(KERN_ERR "%s: unsupported firmware\n",
 175                                         wiphy_name(dev->wiphy));
 176                                 return -ENODEV;
 177                         }
 178                         break;
 179                 case BR_CODE_COMPONENT_VERSION:
 180                         /* 24 bytes should be enough for all firmwares */
 181                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 182                                 fw_version = (unsigned char*)bootrec->data;
 183                         break;
 184                 case BR_CODE_DESCR: {
 185                         struct bootrec_desc *desc =
 186                                 (struct bootrec_desc *)bootrec->data;
 187                         priv->rx_start = le32_to_cpu(desc->rx_start);
 188                         /* FIXME add sanity checking */
 189                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 190                         priv->headroom = desc->headroom;
 191                         priv->tailroom = desc->tailroom;
 192                         priv->privacy_caps = desc->privacy_caps;
 193                         priv->rx_keycache_size = desc->rx_keycache_size;
 194                         if (le32_to_cpu(bootrec->len) == 11)
 195                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 196                         else
 197                                 priv->rx_mtu = (size_t)
 198                                         0x620 - priv->tx_hdr_len;
 199                         maxlen = priv->tx_hdr_len + /* USB devices */
 200                                  sizeof(struct p54_rx_data) +
 201                                  4 + /* rx alignment */
 202                                  IEEE80211_MAX_FRAG_THRESHOLD;
 203                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 204                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 205                                                  "to %d\n", priv->rx_mtu,
 206                                                  maxlen);
 207                                 priv->rx_mtu = maxlen;
 208                         }
 209                         break;
 210                         }
 211                 case BR_CODE_EXPOSED_IF:
 212                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 213                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 214                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 215                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 216                         break;
 217                 case BR_CODE_DEPENDENT_IF:
 218                         break;
 219                 case BR_CODE_END_OF_BRA:
 220                 case LEGACY_BR_CODE_END_OF_BRA:
 221                         end_data = NULL;
 222                         break;
 223                 default:
 224                         break;
 225                 }
 226                 bootrec = (struct bootrec *)&bootrec->data[len];
 227         }
 228
 229         if (fw_version)
 230                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 231                         wiphy_name(dev->wiphy), fw_version,
 232                         priv->fw_var >> 8, priv->fw_var & 0xff);
 233
 234         if (priv->fw_var < 0x500)
 235                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 236                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 237                        "and grab one for \"kernel >= 2.6.28\"!\n",
 238                         wiphy_name(dev->wiphy));
 239
 240         if (priv->fw_var >= 0x300) {
 241                 /* Firmware supports QoS, use it! */
 242                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 243                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 244                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 245                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 246                 dev->queues = P54_QUEUE_AC_NUM;
 247         }
 248
 249         if (!modparam_nohwcrypt)
 250                 printk(KERN_INFO "%s: cryptographic accelerator "
 251                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 252                         wiphy_name(dev->wiphy),
 253                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 254                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 255                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 257                         "YES" : "no");
 258
 259         return 0;
 260 }
 261 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 262
 263 static int p54_convert_rev0(struct ieee80211_hw *dev,
 264                             struct pda_pa_curve_data *curve_data)
 265 {
 266         struct p54_common *priv = dev->priv;
 267         struct p54_pa_curve_data_sample *dst;
 268         struct pda_pa_curve_data_sample_rev0 *src;
 269         size_t cd_len = sizeof(*curve_data) +
 270                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 271                  curve_data->channels;
 272         unsigned int i, j;
 273         void *source, *target;
 274
 275         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 276         if (!priv->curve_data)
 277                 return -ENOMEM;
 278
 279         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 280         source = curve_data->data;
 281         target = priv->curve_data->data;
 282         for (i = 0; i < curve_data->channels; i++) {
 283                 __le16 *freq = source;
 284                 source += sizeof(__le16);
 285                 *((__le16 *)target) = *freq;
 286                 target += sizeof(__le16);
 287                 for (j = 0; j < curve_data->points_per_channel; j++) {
 288                         dst = target;
 289                         src = source;
 290
 291                         dst->rf_power = src->rf_power;
 292                         dst->pa_detector = src->pa_detector;
 293                         dst->data_64qam = src->pcv;
 294                         /* "invent" the points for the other modulations */
 295 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 296                         dst->data_16qam = SUB(src->pcv, 12);
 297                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 298                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 299                         dst->data_barker = SUB(dst->data_bpsk, 14);
 300 #undef SUB
 301                         target += sizeof(*dst);
 302                         source += sizeof(*src);
 303                 }
 304         }
 305
 306         return 0;
 307 }
 308
 309 static int p54_convert_rev1(struct ieee80211_hw *dev,
 310                             struct pda_pa_curve_data *curve_data)
 311 {
 312         struct p54_common *priv = dev->priv;
 313         struct p54_pa_curve_data_sample *dst;
 314         struct pda_pa_curve_data_sample_rev1 *src;
 315         size_t cd_len = sizeof(*curve_data) +
 316                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 317                  curve_data->channels;
 318         unsigned int i, j;
 319         void *source, *target;
 320
 321         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 322         if (!priv->curve_data)
 323                 return -ENOMEM;
 324
 325         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 326         source = curve_data->data;
 327         target = priv->curve_data->data;
 328         for (i = 0; i < curve_data->channels; i++) {
 329                 __le16 *freq = source;
 330                 source += sizeof(__le16);
 331                 *((__le16 *)target) = *freq;
 332                 target += sizeof(__le16);
 333                 for (j = 0; j < curve_data->points_per_channel; j++) {
 334                         memcpy(target, source, sizeof(*src));
 335
 336                         target += sizeof(*dst);
 337                         source += sizeof(*src);
 338                 }
 339                 source++;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 346                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 347 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 348
 349 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 350                              u16 type)
 351 {
 352         struct p54_common *priv = dev->priv;
 353         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 354         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 355         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 356         int i;
 357
 358         if (len != (entry_size * num_entries)) {
 359                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 360                                  " type:(%x) len:%d.\n",
 361                        wiphy_name(dev->wiphy), type, len);
 362
 363                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 364                                      data, len);
 365
 366                 printk(KERN_ERR "%s: please report this issue.\n",
 367                         wiphy_name(dev->wiphy));
 368                 return;
 369         }
 370
 371         for (i = 0; i < num_entries; i++) {
 372                 struct pda_rssi_cal_entry *cal = data +
 373                                                  (offset + i * entry_size);
 374                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 375                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 376         }
 377 }
 378
 379 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 380 {
 381         struct p54_common *priv = dev->priv;
 382         struct eeprom_pda_wrap *wrap = NULL;
 383         struct pda_entry *entry;
 384         unsigned int data_len, entry_len;
 385         void *tmp;
 386         int err;
 387         u8 *end = (u8 *)eeprom + len;
 388         u16 synth = 0;
 389
 390         wrap = (struct eeprom_pda_wrap *) eeprom;
 391         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 392
 393         /* verify that at least the entry length/code fits */
 394         while ((u8 *)entry <= end - sizeof(*entry)) {
 395                 entry_len = le16_to_cpu(entry->len);
 396                 data_len = ((entry_len - 1) << 1);
 397
 398                 /* abort if entry exceeds whole structure */
 399                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 400                         break;
 401
 402                 switch (le16_to_cpu(entry->code)) {
 403                 case PDR_MAC_ADDRESS:
 404                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 405                         break;
 406                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 407                         if (data_len < 2) {
 408                                 err = -EINVAL;
 409                                 goto err;
 410                         }
 411
 412                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
 413                                 err = -EINVAL;
 414                                 goto err;
 415                         }
 416
 417                         priv->output_limit = kmalloc(entry->data[1] *
 418                                 sizeof(*priv->output_limit), GFP_KERNEL);
 419
 420                         if (!priv->output_limit) {
 421                                 err = -ENOMEM;
 422                                 goto err;
 423                         }
 424
 425                         memcpy(priv->output_limit, &entry->data[2],
 426                                entry->data[1]*sizeof(*priv->output_limit));
 427                         priv->output_limit_len = entry->data[1];
 428                         break;
 429                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 430                         struct pda_pa_curve_data *curve_data =
 431                                 (struct pda_pa_curve_data *)entry->data;
 432                         if (data_len < sizeof(*curve_data)) {
 433                                 err = -EINVAL;
 434                                 goto err;
 435                         }
 436
 437                         switch (curve_data->cal_method_rev) {
 438                         case 0:
 439                                 err = p54_convert_rev0(dev, curve_data);
 440                                 break;
 441                         case 1:
 442                                 err = p54_convert_rev1(dev, curve_data);
 443                                 break;
 444                         default:
 445                                 printk(KERN_ERR "%s: unknown curve data "
 446                                                 "revision %d\n",
 447                                                 wiphy_name(dev->wiphy),
 448                                                 curve_data->cal_method_rev);
 449                                 err = -ENODEV;
 450                                 break;
 451                         }
 452                         if (err)
 453                                 goto err;
 454                         }
 455                         break;
 456                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 457                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 458                         if (!priv->iq_autocal) {
 459                                 err = -ENOMEM;
 460                                 goto err;
 461                         }
 462
 463                         memcpy(priv->iq_autocal, entry->data, data_len);
 464                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 465                         break;
 466                 case PDR_INTERFACE_LIST:
 467                         tmp = entry->data;
 468                         while ((u8 *)tmp < entry->data + data_len) {
 469                                 struct bootrec_exp_if *exp_if = tmp;
 470                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 471                                         synth = le16_to_cpu(exp_if->variant);
 472                                 tmp += sizeof(struct bootrec_exp_if);
 473                         }
 474                         break;
 475                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 476                         priv->version = *(u8 *)(entry->data + 1);
 477                         break;
 478                 case PDR_RSSI_LINEAR_APPROXIMATION:
 479                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 480                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 481                         p54_parse_rssical(dev, entry->data, data_len,
 482                                           le16_to_cpu(entry->code));
 483                         break;
 484                 case PDR_END:
 485                         /* make it overrun */
 486                         entry_len = len;
 487                         break;
 488                 case PDR_MANUFACTURING_PART_NUMBER:
 489                 case PDR_PDA_VERSION:
 490                 case PDR_NIC_SERIAL_NUMBER:
 491                 case PDR_REGULATORY_DOMAIN_LIST:
 492                 case PDR_TEMPERATURE_TYPE:
 493                 case PDR_PRISM_PCI_IDENTIFIER:
 494                 case PDR_COUNTRY_INFORMATION:
 495                 case PDR_OEM_NAME:
 496                 case PDR_PRODUCT_NAME:
 497                 case PDR_UTF8_OEM_NAME:
 498                 case PDR_UTF8_PRODUCT_NAME:
 499                 case PDR_COUNTRY_LIST:
 500                 case PDR_DEFAULT_COUNTRY:
 501                 case PDR_ANTENNA_GAIN:
 502                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 503                 case PDR_REGULATORY_POWER_LIMITS:
 504                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 505                 case PDR_PRISM_TX_IQ_CALIBRATION:
 506                 case PDR_BASEBAND_REGISTERS:
 507                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 508                         break;
 509                 default:
 510                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 511                                 wiphy_name(dev->wiphy),
 512                                 le16_to_cpu(entry->code));
 513                         break;
 514                 }
 515
 516                 entry = (void *)entry + (entry_len + 1)*2;
 517         }
 518
 519         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 520             !priv->curve_data) {
 521                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 522                         wiphy_name(dev->wiphy));
 523                 err = -EINVAL;
 524                 goto err;
 525         }
 526
 527         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 528         if (priv->rxhw == 4)
 529                 p54_init_xbow_synth(dev);
 530         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 531                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 532         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 533                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 534
 535         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 536                 u8 perm_addr[ETH_ALEN];
 537
 538                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 539                         wiphy_name(dev->wiphy));
 540                 random_ether_addr(perm_addr);
 541                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 542         }
 543
 544         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 545                 wiphy_name(dev->wiphy),
 546                 dev->wiphy->perm_addr,
 547                 priv->version, p54_rf_chips[priv->rxhw]);
 548
 549         return 0;
 550
 551   err:
 552         if (priv->iq_autocal) {
 553                 kfree(priv->iq_autocal);
 554                 priv->iq_autocal = NULL;
 555         }
 556
 557         if (priv->output_limit) {
 558                 kfree(priv->output_limit);
 559                 priv->output_limit = NULL;
 560         }
 561
 562         if (priv->curve_data) {
 563                 kfree(priv->curve_data);
 564                 priv->curve_data = NULL;
 565         }
 566
 567         printk(KERN_ERR "%s: eeprom parse failed!\n",
 568                 wiphy_name(dev->wiphy));
 569         return err;
 570 }
 571
 572 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 573 {
 574         struct p54_common *priv = dev->priv;
 575         int band = dev->conf.channel->band;
 576
 577         return ((rssi * priv->rssical_db[band].mul) / 64 +
 578                          priv->rssical_db[band].add) / 4;
 579 }
 580
 581 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 582 {
 583         struct p54_common *priv = dev->priv;
 584         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 585         struct ieee80211_rx_status rx_status = {0};
 586         u16 freq = le16_to_cpu(hdr->freq);
 587         size_t header_len = sizeof(*hdr);
 588         u32 tsf32;
 589         u8 rate = hdr->rate & 0xf;
 590
 591         /*
 592          * If the device is in a unspecified state we have to
 593          * ignore all data frames. Else we could end up with a
 594          * nasty crash.
 595          */
 596         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 597                 return 0;
 598
 599         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 600                 if (priv->filter_flags & FIF_FCSFAIL)
 601                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 602                 else
 603                         return 0;
 604         }
 605
 606         if (hdr->decrypt_status == P54_DECRYPT_OK)
 607                 rx_status.flag |= RX_FLAG_DECRYPTED;
 608         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 609             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 610                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 611
 612         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 613         rx_status.noise = priv->noise;
 614         /* XX correct? */
 615         rx_status.qual = (100 * hdr->rssi) / 127;
 616         if (hdr->rate & 0x10)
 617                 rx_status.flag |= RX_FLAG_SHORTPRE;
 618         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 619                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 620         else
 621                 rx_status.rate_idx = rate;
 622
 623         rx_status.freq = freq;
 624         rx_status.band =  dev->conf.channel->band;
 625         rx_status.antenna = hdr->antenna;
 626
 627         tsf32 = le32_to_cpu(hdr->tsf32);
 628         if (tsf32 < priv->tsf_low32)
 629                 priv->tsf_high32++;
 630         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 631         priv->tsf_low32 = tsf32;
 632
 633         rx_status.flag |= RX_FLAG_TSFT;
 634
 635         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 636                 header_len += hdr->align[0];
 637
 638         skb_pull(skb, header_len);
 639         skb_trim(skb, le16_to_cpu(hdr->len));
 640
 641         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 642
 643         queue_delayed_work(dev->workqueue, &priv->work,
 644                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 645
 646         return -1;
 647 }
 648
 649 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 650 {
 651         struct p54_common *priv = dev->priv;
 652         int i;
 653
 654         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 655                 return ;
 656
 657         for (i = 0; i < dev->queues; i++)
 658                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 659                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 660                         ieee80211_wake_queue(dev, i);
 661 }
 662
 663 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 664 {
 665         struct p54_common *priv = dev->priv;
 666         struct ieee80211_tx_info *info;
 667         struct memrecord *range;
 668         unsigned long flags;
 669         u32 freed = 0, last_addr = priv->rx_start;
 670
 671         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 672                 return;
 673
 674         /*
 675          * don't try to free an already unlinked skb
 676          */
 677         if (unlikely((!skb->next) || (!skb->prev)))
 678                 return;
 679
 680         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 681         info = IEEE80211_SKB_CB(skb);
 682         range = (void *)info->rate_driver_data;
 683         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 684                 struct ieee80211_tx_info *ni;
 685                 struct memrecord *mr;
 686
 687                 ni = IEEE80211_SKB_CB(skb->prev);
 688                 mr = (struct memrecord *)ni->rate_driver_data;
 689                 last_addr = mr->end_addr;
 690         }
 691         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 692                 struct ieee80211_tx_info *ni;
 693                 struct memrecord *mr;
 694
 695                 ni = IEEE80211_SKB_CB(skb->next);
 696                 mr = (struct memrecord *)ni->rate_driver_data;
 697                 freed = mr->start_addr - last_addr;
 698         } else
 699                 freed = priv->rx_end - last_addr;
 700         __skb_unlink(skb, &priv->tx_queue);
 701         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 702         dev_kfree_skb_any(skb);
 703
 704         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 705                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 706                 p54_wake_free_queues(dev);
 707 }
 708 EXPORT_SYMBOL_GPL(p54_free_skb);
 709
 710 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 711                                            __le32 req_id)
 712 {
 713         struct p54_common *priv = dev->priv;
 714         struct sk_buff *entry = priv->tx_queue.next;
 715         unsigned long flags;
 716
 717         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 718         while (entry != (struct sk_buff *)&priv->tx_queue) {
 719                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 720
 721                 if (hdr->req_id == req_id) {
 722                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 723                         return entry;
 724                 }
 725                 entry = entry->next;
 726         }
 727         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 728         return NULL;
 729 }
 730
 731 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 732 {
 733         struct p54_common *priv = dev->priv;
 734         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 735         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 736         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 737         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 738         struct memrecord *range = NULL;
 739         u32 freed = 0;
 740         u32 last_addr = priv->rx_start;
 741         unsigned long flags;
 742         int count, idx;
 743
 744         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 745         while (entry != (struct sk_buff *)&priv->tx_queue) {
 746                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 747                 struct p54_hdr *entry_hdr;
 748                 struct p54_tx_data *entry_data;
 749                 unsigned int pad = 0, frame_len;
 750
 751                 range = (void *)info->rate_driver_data;
 752                 if (range->start_addr != addr) {
 753                         last_addr = range->end_addr;
 754                         entry = entry->next;
 755                         continue;
 756                 }
 757
 758                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 759                         struct ieee80211_tx_info *ni;
 760                         struct memrecord *mr;
 761
 762                         ni = IEEE80211_SKB_CB(entry->next);
 763                         mr = (struct memrecord *)ni->rate_driver_data;
 764                         freed = mr->start_addr - last_addr;
 765                 } else
 766                         freed = priv->rx_end - last_addr;
 767
 768                 last_addr = range->end_addr;
 769                 __skb_unlink(entry, &priv->tx_queue);
 770                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 771
 772                 frame_len = entry->len;
 773                 entry_hdr = (struct p54_hdr *) entry->data;
 774                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 775                 priv->tx_stats[entry_data->hw_queue].len--;
 776                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 777
 778                 /*
 779                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 780                  * generated by the driver. Therefore tx_status is bogus
 781                  * and we don't want to confuse the mac80211 stack.
 782                  */
 783                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 784                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 785                                 priv->cached_beacon = NULL;
 786
 787                         kfree_skb(entry);
 788                         goto out;
 789                 }
 790
 791                 /*
 792                  * Clear manually, ieee80211_tx_info_clear_status would
 793                  * clear the counts too and we need them.
 794                  */
 795                 memset(&info->status.ampdu_ack_len, 0,
 796                        sizeof(struct ieee80211_tx_info) -
 797                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 798                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 799                                       status.ampdu_ack_len) != 23);
 800
 801                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 802                         pad = entry_data->align[0];
 803
 804                 /* walk through the rates array and adjust the counts */
 805                 count = payload->tries;
 806                 for (idx = 0; idx < 4; idx++) {
 807                         if (count >= info->status.rates[idx].count) {
 808                                 count -= info->status.rates[idx].count;
 809                         } else if (count > 0) {
 810                                 info->status.rates[idx].count = count;
 811                                 count = 0;
 812                         } else {
 813                                 info->status.rates[idx].idx = -1;
 814                                 info->status.rates[idx].count = 0;
 815                         }
 816                 }
 817
 818                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 819                      (!payload->status))
 820                         info->flags |= IEEE80211_TX_STAT_ACK;
 821                 if (payload->status & P54_TX_PSM_CANCELLED)
 822                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 823                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 824                                 (int)payload->ack_rssi);
 825
 826                 /* Undo all changes to the frame. */
 827                 switch (entry_data->key_type) {
 828                 case P54_CRYPTO_TKIPMICHAEL: {
 829                         u8 *iv = (u8 *)(entry_data->align + pad +
 830                                         entry_data->crypt_offset);
 831
 832                         /* Restore the original TKIP IV. */
 833                         iv[2] = iv[0];
 834                         iv[0] = iv[1];
 835                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 836
 837                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 838                         break;
 839                         }
 840                 case P54_CRYPTO_AESCCMP:
 841                         frame_len -= 8; /* remove CCMP_MIC */
 842                         break;
 843                 case P54_CRYPTO_WEP:
 844                         frame_len -= 4; /* remove WEP_ICV */
 845                         break;
 846                 }
 847                 skb_trim(entry, frame_len);
 848                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 849                 ieee80211_tx_status_irqsafe(dev, entry);
 850                 goto out;
 851         }
 852         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 853
 854 out:
 855         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 856                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 857                 p54_wake_free_queues(dev);
 858 }
 859
 860 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 861                                    struct sk_buff *skb)
 862 {
 863         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 864         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
 865         struct p54_common *priv = dev->priv;
 866
 867         if (!priv->eeprom)
 868                 return ;
 869
 870         if (priv->fw_var >= 0x509) {
 871                 memcpy(priv->eeprom, eeprom->v2.data,
 872                        le16_to_cpu(eeprom->v2.len));
 873         } else {
 874                 memcpy(priv->eeprom, eeprom->v1.data,
 875                        le16_to_cpu(eeprom->v1.len));
 876         }
 877
 878         complete(&priv->eeprom_comp);
 879 }
 880
 881 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
 882 {
 883         struct p54_common *priv = dev->priv;
 884         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 885         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
 886         u32 tsf32;
 887
 888         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 889                 return ;
 890
 891         tsf32 = le32_to_cpu(stats->tsf32);
 892         if (tsf32 < priv->tsf_low32)
 893                 priv->tsf_high32++;
 894         priv->tsf_low32 = tsf32;
 895
 896         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
 897         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
 898         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
 899
 900         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
 901
 902         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
 903 }
 904
 905 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
 906 {
 907         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 908         struct p54_trap *trap = (struct p54_trap *) hdr->data;
 909         u16 event = le16_to_cpu(trap->event);
 910         u16 freq = le16_to_cpu(trap->frequency);
 911
 912         switch (event) {
 913         case P54_TRAP_BEACON_TX:
 914                 break;
 915         case P54_TRAP_RADAR:
 916                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
 917                         wiphy_name(dev->wiphy), freq);
 918                 break;
 919         case P54_TRAP_NO_BEACON:
 920                 break;
 921         case P54_TRAP_SCAN:
 922                 break;
 923         case P54_TRAP_TBTT:
 924                 break;
 925         case P54_TRAP_TIMER:
 926                 break;
 927         default:
 928                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
 929                        wiphy_name(dev->wiphy), event, freq);
 930                 break;
 931         }
 932 }
 933
 934 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
 935 {
 936         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 937
 938         switch (le16_to_cpu(hdr->type)) {
 939         case P54_CONTROL_TYPE_TXDONE:
 940                 p54_rx_frame_sent(dev, skb);
 941                 break;
 942         case P54_CONTROL_TYPE_TRAP:
 943                 p54_rx_trap(dev, skb);
 944                 break;
 945         case P54_CONTROL_TYPE_BBP:
 946                 break;
 947         case P54_CONTROL_TYPE_STAT_READBACK:
 948                 p54_rx_stats(dev, skb);
 949                 break;
 950         case P54_CONTROL_TYPE_EEPROM_READBACK:
 951                 p54_rx_eeprom_readback(dev, skb);
 952                 break;
 953         default:
 954                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
 955                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
 956                 break;
 957         }
 958
 959         return 0;
 960 }
 961
 962 /* returns zero if skb can be reused */
 963 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
 964 {
 965         u16 type = le16_to_cpu(*((__le16 *)skb->data));
 966
 967         if (type & P54_HDR_FLAG_CONTROL)
 968                 return p54_rx_control(dev, skb);
 969         else
 970                 return p54_rx_data(dev, skb);
 971 }
 972 EXPORT_SYMBOL_GPL(p54_rx);
 973
 974 /*
 975  * So, the firmware is somewhat stupid and doesn't know what places in its
 976  * memory incoming data should go to. By poking around in the firmware, we
 977  * can find some unused memory to upload our packets to. However, data that we
 978  * want the card to TX needs to stay intact until the card has told us that
 979  * it is done with it. This function finds empty places we can upload to and
 980  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
 981  * allocated areas.
 982  */
 983 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
 984                                struct p54_hdr *data, u32 len)
 985 {
 986         struct p54_common *priv = dev->priv;
 987         struct sk_buff *entry = priv->tx_queue.next;
 988         struct sk_buff *target_skb = NULL;
 989         struct ieee80211_tx_info *info;
 990         struct memrecord *range;
 991         u32 last_addr = priv->rx_start;
 992         u32 largest_hole = 0;
 993         u32 target_addr = priv->rx_start;
 994         unsigned long flags;
 995         unsigned int left;
 996         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
 997
 998         if (!skb)
 999                 return -EINVAL;
1000
1001         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1002
1003         left = skb_queue_len(&priv->tx_queue);
1004         if (unlikely(left >= 28)) {
1005                 /*
1006                  * The tx_queue is nearly full!
1007                  * We have throttle normal data traffic, because we must
1008                  * have a few spare slots for control frames left.
1009                  */
1010                 ieee80211_stop_queues(dev);
1011                 queue_delayed_work(dev->workqueue, &priv->work,
1012                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1013
1014                 if (unlikely(left == 32)) {
1015                         /*
1016                          * The tx_queue is now really full.
1017                          *
1018                          * TODO: check if the device has crashed and reset it.
1019                          */
1020                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1021                         return -ENOSPC;
1022                 }
1023         }
1024
1025         while (left--) {
1026                 u32 hole_size;
1027                 info = IEEE80211_SKB_CB(entry);
1028                 range = (void *)info->rate_driver_data;
1029                 hole_size = range->start_addr - last_addr;
1030                 if (!target_skb && hole_size >= len) {
1031                         target_skb = entry->prev;
1032                         hole_size -= len;
1033                         target_addr = last_addr;
1034                 }
1035                 largest_hole = max(largest_hole, hole_size);
1036                 last_addr = range->end_addr;
1037                 entry = entry->next;
1038         }
1039         if (!target_skb && priv->rx_end - last_addr >= len) {
1040                 target_skb = priv->tx_queue.prev;
1041                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1042                 if (!skb_queue_empty(&priv->tx_queue)) {
1043                         info = IEEE80211_SKB_CB(target_skb);
1044                         range = (void *)info->rate_driver_data;
1045                         target_addr = range->end_addr;
1046                 }
1047         } else
1048                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1049
1050         if (!target_skb) {
1051                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1052                 ieee80211_stop_queues(dev);
1053                 return -ENOSPC;
1054         }
1055
1056         info = IEEE80211_SKB_CB(skb);
1057         range = (void *)info->rate_driver_data;
1058         range->start_addr = target_addr;
1059         range->end_addr = target_addr + len;
1060         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1061         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1062
1063         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1064                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1065                 ieee80211_stop_queues(dev);
1066
1067         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1068         return 0;
1069 }
1070
1071 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
1072                 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
1073 {
1074         struct p54_common *priv = dev->priv;
1075         struct p54_hdr *hdr;
1076         struct sk_buff *skb;
1077
1078         skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
1079         if (!skb)
1080                 return NULL;
1081         skb_reserve(skb, priv->tx_hdr_len);
1082
1083         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1084         hdr->flags = cpu_to_le16(hdr_flags);
1085         hdr->len = cpu_to_le16(len - sizeof(*hdr));
1086         hdr->type = cpu_to_le16(type);
1087         hdr->tries = hdr->rts_tries = 0;
1088
1089         if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
1090                 kfree_skb(skb);
1091                 return NULL;
1092         }
1093         return skb;
1094 }
1095
1096 int p54_read_eeprom(struct ieee80211_hw *dev)
1097 {
1098         struct p54_common *priv = dev->priv;
1099         struct p54_hdr *hdr = NULL;
1100         struct p54_eeprom_lm86 *eeprom_hdr;
1101         struct sk_buff *skb;
1102         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1103         int ret = -ENOMEM;
1104         void *eeprom = NULL;
1105
1106         maxblocksize = EEPROM_READBACK_LEN;
1107         if (priv->fw_var >= 0x509)
1108                 maxblocksize -= 0xc;
1109         else
1110                 maxblocksize -= 0x4;
1111
1112         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
1113                             sizeof(*eeprom_hdr) + maxblocksize,
1114                             P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
1115         if (!skb)
1116                 goto free;
1117         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1118         if (!priv->eeprom)
1119                 goto free;
1120         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1121         if (!eeprom)
1122                 goto free;
1123
1124         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1125                      sizeof(*eeprom_hdr) + maxblocksize);
1126
1127         while (eeprom_size) {
1128                 blocksize = min(eeprom_size, maxblocksize);
1129                 if (priv->fw_var < 0x509) {
1130                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1131                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1132                 } else {
1133                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1134                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1135                         eeprom_hdr->v2.magic2 = 0xf;
1136                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1137                 }
1138                 priv->tx(dev, skb);
1139
1140                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1141                         printk(KERN_ERR "%s: device does not respond!\n",
1142                                 wiphy_name(dev->wiphy));
1143                         ret = -EBUSY;
1144                         goto free;
1145                 }
1146
1147                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1148                 offset += blocksize;
1149                 eeprom_size -= blocksize;
1150         }
1151
1152         ret = p54_parse_eeprom(dev, eeprom, offset);
1153 free:
1154         kfree(priv->eeprom);
1155         priv->eeprom = NULL;
1156         p54_free_skb(dev, skb);
1157         kfree(eeprom);
1158
1159         return ret;
1160 }
1161 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1162
1163 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1164                 bool set)
1165 {
1166         struct p54_common *priv = dev->priv;
1167         struct sk_buff *skb;
1168         struct p54_tim *tim;
1169
1170         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1171                       sizeof(struct p54_hdr) + sizeof(*tim),
1172                       P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1173         if (!skb)
1174                 return -ENOMEM;
1175
1176         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1177         tim->count = 1;
1178         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1179         priv->tx(dev, skb);
1180         return 0;
1181 }
1182
1183 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1184 {
1185         struct p54_common *priv = dev->priv;
1186         struct sk_buff *skb;
1187         struct p54_sta_unlock *sta;
1188
1189         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1190                 sizeof(struct p54_hdr) + sizeof(*sta),
1191                 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1192         if (!skb)
1193                 return -ENOMEM;
1194
1195         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1196         memcpy(sta->addr, addr, ETH_ALEN);
1197         priv->tx(dev, skb);
1198         return 0;
1199 }
1200
1201 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1202                               enum sta_notify_cmd notify_cmd,
1203                               struct ieee80211_sta *sta)
1204 {
1205         switch (notify_cmd) {
1206         case STA_NOTIFY_ADD:
1207         case STA_NOTIFY_REMOVE:
1208                 /*
1209                  * Notify the firmware that we don't want or we don't
1210                  * need to buffer frames for this station anymore.
1211                  */
1212
1213                 p54_sta_unlock(dev, sta->addr);
1214                 break;
1215         case STA_NOTIFY_AWAKE:
1216                 /* update the firmware's filter table */
1217                 p54_sta_unlock(dev, sta->addr);
1218                 break;
1219         default:
1220                 break;
1221         }
1222 }
1223
1224 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1225 {
1226         struct p54_common *priv = dev->priv;
1227         struct sk_buff *skb;
1228         struct p54_hdr *hdr;
1229         struct p54_txcancel *cancel;
1230
1231         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1232                 sizeof(struct p54_hdr) + sizeof(*cancel),
1233                 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1234         if (!skb)
1235                 return -ENOMEM;
1236
1237         hdr = (void *)entry->data;
1238         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1239         cancel->req_id = hdr->req_id;
1240         priv->tx(dev, skb);
1241         return 0;
1242 }
1243
1244 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1245                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1246                 u16 *flags, u16 *aid)
1247 {
1248         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1249         struct p54_common *priv = dev->priv;
1250         int ret = 1;
1251
1252         switch (priv->mode) {
1253         case NL80211_IFTYPE_MONITOR:
1254                 /*
1255                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1256                  * every frame in promiscuous/monitor mode.
1257                  * see STSW45x0C LMAC API - page 12.
1258                  */
1259                 *aid = 0;
1260                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1261                 *queue += P54_QUEUE_DATA;
1262                 break;
1263         case NL80211_IFTYPE_STATION:
1264                 *aid = 1;
1265                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1266                         *queue = P54_QUEUE_MGMT;
1267                         ret = 0;
1268                 } else
1269                         *queue += P54_QUEUE_DATA;
1270                 break;
1271         case NL80211_IFTYPE_AP:
1272         case NL80211_IFTYPE_ADHOC:
1273         case NL80211_IFTYPE_MESH_POINT:
1274                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1275                         *aid = 0;
1276                         *queue = P54_QUEUE_CAB;
1277                         return 0;
1278                 }
1279
1280                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1281                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1282                                 *aid = 0;
1283                                 *queue = P54_QUEUE_MGMT;
1284                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1285                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1286                                 return 0;
1287                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1288                                 *aid = 0;
1289
1290                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1291                                         /*
1292                                          * Injecting beacons on top of a AP is
1293                                          * not a good idea... nevertheless,
1294                                          * it should be doable.
1295                                          */
1296
1297                                         *queue += P54_QUEUE_DATA;
1298                                         return 1;
1299                                 }
1300
1301                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1302                                 *queue = P54_QUEUE_BEACON;
1303                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1304                                 return 0;
1305                         } else {
1306                                 *queue = P54_QUEUE_MGMT;
1307                                 ret = 0;
1308                         }
1309                 } else
1310                         *queue += P54_QUEUE_DATA;
1311
1312                 if (info->control.sta)
1313                         *aid = info->control.sta->aid;
1314                 else
1315                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1316                 break;
1317         }
1318         return ret;
1319 }
1320
1321 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1322 {
1323         switch (alg) {
1324         case ALG_WEP:
1325                 return P54_CRYPTO_WEP;
1326         case ALG_TKIP:
1327                 return P54_CRYPTO_TKIPMICHAEL;
1328         case ALG_CCMP:
1329                 return P54_CRYPTO_AESCCMP;
1330         default:
1331                 return 0;
1332         }
1333 }
1334
1335 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1336 {
1337         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1338         struct ieee80211_tx_queue_stats *current_queue;
1339         struct p54_common *priv = dev->priv;
1340         struct p54_hdr *hdr;
1341         struct p54_tx_data *txhdr;
1342         size_t padding, len, tim_len = 0;
1343         int i, j, ridx, ret;
1344         u16 hdr_flags = 0, aid = 0;
1345         u8 rate, queue, crypt_offset = 0;
1346         u8 cts_rate = 0x20;
1347         u8 rc_flags;
1348         u8 calculated_tries[4];
1349         u8 nrates = 0, nremaining = 8;
1350
1351         queue = skb_get_queue_mapping(skb);
1352
1353         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1354         current_queue = &priv->tx_stats[queue];
1355         if (unlikely((current_queue->len > current_queue->limit) && ret))
1356                 return NETDEV_TX_BUSY;
1357         current_queue->len++;
1358         current_queue->count++;
1359         if ((current_queue->len == current_queue->limit) && ret)
1360                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1361
1362         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1363         len = skb->len;
1364
1365         if (info->control.hw_key) {
1366                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1367                 if (info->control.hw_key->alg == ALG_TKIP) {
1368                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1369                         /*
1370                          * The firmware excepts that the IV has to have
1371                          * this special format
1372                          */
1373                         iv[1] = iv[0];
1374                         iv[0] = iv[2];
1375                         iv[2] = 0;
1376                 }
1377         }
1378
1379         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1380         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1381
1382         if (padding)
1383                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1384         hdr->type = cpu_to_le16(aid);
1385         hdr->rts_tries = info->control.rates[0].count;
1386
1387         /*
1388          * we register the rates in perfect order, and
1389          * RTS/CTS won't happen on 5 GHz
1390          */
1391         cts_rate = info->control.rts_cts_rate_idx;
1392
1393         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1394
1395         /* see how many rates got used */
1396         for (i = 0; i < 4; i++) {
1397                 if (info->control.rates[i].idx < 0)
1398                         break;
1399                 nrates++;
1400         }
1401
1402         /* limit tries to 8/nrates per rate */
1403         for (i = 0; i < nrates; i++) {
1404                 /*
1405                  * The magic expression here is equivalent to 8/nrates for
1406                  * all values that matter, but avoids division and jumps.
1407                  * Note that nrates can only take the values 1 through 4.
1408                  */
1409                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1410                                                  info->control.rates[i].count);
1411                 nremaining -= calculated_tries[i];
1412         }
1413
1414         /* if there are tries left, distribute from back to front */
1415         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1416                 int tmp = info->control.rates[i].count - calculated_tries[i];
1417
1418                 if (tmp <= 0)
1419                         continue;
1420                 /* RC requested more tries at this rate */
1421
1422                 tmp = min_t(int, tmp, nremaining);
1423                 calculated_tries[i] += tmp;
1424                 nremaining -= tmp;
1425         }
1426
1427         ridx = 0;
1428         for (i = 0; i < nrates && ridx < 8; i++) {
1429                 /* we register the rates in perfect order */
1430                 rate = info->control.rates[i].idx;
1431                 if (info->band == IEEE80211_BAND_5GHZ)
1432                         rate += 4;
1433
1434                 /* store the count we actually calculated for TX status */
1435                 info->control.rates[i].count = calculated_tries[i];
1436
1437                 rc_flags = info->control.rates[i].flags;
1438                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1439                         rate |= 0x10;
1440                         cts_rate |= 0x10;
1441                 }
1442                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1443                         rate |= 0x40;
1444                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1445                         rate |= 0x20;
1446                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1447                         txhdr->rateset[ridx] = rate;
1448                         ridx++;
1449                 }
1450         }
1451
1452         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1453                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1454
1455         /* TODO: enable bursting */
1456         hdr->flags = cpu_to_le16(hdr_flags);
1457         hdr->tries = ridx;
1458         txhdr->rts_rate_idx = 0;
1459         if (info->control.hw_key) {
1460                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1461                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1462                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1463                 if (info->control.hw_key->alg == ALG_TKIP) {
1464                         if (unlikely(skb_tailroom(skb) < 12))
1465                                 goto err;
1466                         /* reserve space for the MIC key */
1467                         len += 8;
1468                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1469                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1470                 }
1471                 /* reserve some space for ICV */
1472                 len += info->control.hw_key->icv_len;
1473                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1474                        info->control.hw_key->icv_len);
1475         } else {
1476                 txhdr->key_type = 0;
1477                 txhdr->key_len = 0;
1478         }
1479         txhdr->crypt_offset = crypt_offset;
1480         txhdr->hw_queue = queue;
1481         txhdr->backlog = current_queue->len;
1482         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1483         txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
1484                 2 : info->antenna_sel_tx - 1;
1485         txhdr->output_power = priv->output_power;
1486         txhdr->cts_rate = cts_rate;
1487         if (padding)
1488                 txhdr->align[0] = padding;
1489
1490         hdr->len = cpu_to_le16(len);
1491         /* modifies skb->cb and with it info, so must be last! */
1492         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1493                 goto err;
1494         priv->tx(dev, skb);
1495
1496         queue_delayed_work(dev->workqueue, &priv->work,
1497                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1498
1499         return 0;
1500
1501  err:
1502         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1503         current_queue->len--;
1504         current_queue->count--;
1505         return NETDEV_TX_BUSY;
1506 }
1507
1508 static int p54_setup_mac(struct ieee80211_hw *dev)
1509 {
1510         struct p54_common *priv = dev->priv;
1511         struct sk_buff *skb;
1512         struct p54_setup_mac *setup;
1513         u16 mode;
1514
1515         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1516                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1517                             GFP_ATOMIC);
1518         if (!skb)
1519                 return -ENOMEM;
1520
1521         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1522         if (dev->conf.radio_enabled) {
1523                 switch (priv->mode) {
1524                 case NL80211_IFTYPE_STATION:
1525                         mode = P54_FILTER_TYPE_STATION;
1526                         break;
1527                 case NL80211_IFTYPE_AP:
1528                         mode = P54_FILTER_TYPE_AP;
1529                         break;
1530                 case NL80211_IFTYPE_ADHOC:
1531                 case NL80211_IFTYPE_MESH_POINT:
1532                         mode = P54_FILTER_TYPE_IBSS;
1533                         break;
1534                 case NL80211_IFTYPE_MONITOR:
1535                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1536                         break;
1537                 default:
1538                         mode = P54_FILTER_TYPE_NONE;
1539                         break;
1540                 }
1541
1542                 /*
1543                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1544                  * STSW45X0C LMAC API - page 12
1545                  */
1546                 if ((priv->filter_flags & FIF_PROMISC_IN_BSS) &&
1547                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1548                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1549         } else
1550                 mode = P54_FILTER_TYPE_RX_DISABLED;
1551
1552         setup->mac_mode = cpu_to_le16(mode);
1553         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1554         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1555         setup->rx_antenna = 2; /* automatic */
1556         setup->rx_align = 0;
1557         if (priv->fw_var < 0x500) {
1558                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1559                 memset(setup->v1.rts_rates, 0, 8);
1560                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1561                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1562                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1563                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1564                 setup->v1.unalloc0 = cpu_to_le16(0);
1565         } else {
1566                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1567                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1568                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1569                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1570                 setup->v2.truncate = cpu_to_le16(48896);
1571                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1572                 setup->v2.sbss_offset = 0;
1573                 setup->v2.mcast_window = 0;
1574                 setup->v2.rx_rssi_threshold = 0;
1575                 setup->v2.rx_ed_threshold = 0;
1576                 setup->v2.ref_clock = cpu_to_le32(644245094);
1577                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1578                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1579         }
1580         priv->tx(dev, skb);
1581         return 0;
1582 }
1583
1584 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1585 {
1586         struct p54_common *priv = dev->priv;
1587         struct sk_buff *skb;
1588         struct p54_scan *chan;
1589         unsigned int i;
1590         void *entry;
1591         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1592         int band = dev->conf.channel->band;
1593
1594         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1595                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1596                             GFP_ATOMIC);
1597         if (!skb)
1598                 return -ENOMEM;
1599
1600         chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1601         memset(chan->padding1, 0, sizeof(chan->padding1));
1602         chan->mode = cpu_to_le16(mode);
1603         chan->dwell = cpu_to_le16(dwell);
1604
1605         for (i = 0; i < priv->iq_autocal_len; i++) {
1606                 if (priv->iq_autocal[i].freq != freq)
1607                         continue;
1608
1609                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1610                        sizeof(*priv->iq_autocal));
1611                 break;
1612         }
1613         if (i == priv->iq_autocal_len)
1614                 goto err;
1615
1616         for (i = 0; i < priv->output_limit_len; i++) {
1617                 if (priv->output_limit[i].freq != freq)
1618                         continue;
1619
1620                 chan->val_barker = 0x38;
1621                 chan->val_bpsk = chan->dup_bpsk =
1622                         priv->output_limit[i].val_bpsk;
1623                 chan->val_qpsk = chan->dup_qpsk =
1624                         priv->output_limit[i].val_qpsk;
1625                 chan->val_16qam = chan->dup_16qam =
1626                         priv->output_limit[i].val_16qam;
1627                 chan->val_64qam = chan->dup_64qam =
1628                         priv->output_limit[i].val_64qam;
1629                 break;
1630         }
1631         if (i == priv->output_limit_len)
1632                 goto err;
1633
1634         entry = priv->curve_data->data;
1635         for (i = 0; i < priv->curve_data->channels; i++) {
1636                 if (*((__le16 *)entry) != freq) {
1637                         entry += sizeof(__le16);
1638                         entry += sizeof(struct p54_pa_curve_data_sample) *
1639                                  priv->curve_data->points_per_channel;
1640                         continue;
1641                 }
1642
1643                 entry += sizeof(__le16);
1644                 chan->pa_points_per_curve = 8;
1645                 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1646                 memcpy(chan->curve_data, entry,
1647                        sizeof(struct p54_pa_curve_data_sample) *
1648                        min((u8)8, priv->curve_data->points_per_channel));
1649                 break;
1650         }
1651
1652         if (priv->fw_var < 0x500) {
1653                 chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1654                 chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1655         } else {
1656                 chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1657                 chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1658                 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1659                 memset(chan->v2.rts_rates, 0, 8);
1660         }
1661         priv->tx(dev, skb);
1662         return 0;
1663
1664  err:
1665         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1666         p54_free_skb(dev, skb);
1667         return -EINVAL;
1668 }
1669
1670 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1671 {
1672         struct p54_common *priv = dev->priv;
1673         struct sk_buff *skb;
1674         struct p54_led *led;
1675
1676         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1677                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1678                         GFP_ATOMIC);
1679         if (!skb)
1680                 return -ENOMEM;
1681
1682         led = (struct p54_led *)skb_put(skb, sizeof(*led));
1683         led->mode = cpu_to_le16(mode);
1684         led->led_permanent = cpu_to_le16(link);
1685         led->led_temporary = cpu_to_le16(act);
1686         led->duration = cpu_to_le16(1000);
1687         priv->tx(dev, skb);
1688         return 0;
1689 }
1690
1691 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1692 do {                                                            \
1693         queue.aifs = cpu_to_le16(ai_fs);                        \
1694         queue.cwmin = cpu_to_le16(cw_min);                      \
1695         queue.cwmax = cpu_to_le16(cw_max);                      \
1696         queue.txop = cpu_to_le16(_txop);                        \
1697 } while(0)
1698
1699 static int p54_set_edcf(struct ieee80211_hw *dev)
1700 {
1701         struct p54_common *priv = dev->priv;
1702         struct sk_buff *skb;
1703         struct p54_edcf *edcf;
1704
1705         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1706                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1707                         GFP_ATOMIC);
1708         if (!skb)
1709                 return -ENOMEM;
1710
1711         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1712         if (priv->use_short_slot) {
1713                 edcf->slottime = 9;
1714                 edcf->sifs = 0x10;
1715                 edcf->eofpad = 0x00;
1716         } else {
1717                 edcf->slottime = 20;
1718                 edcf->sifs = 0x0a;
1719                 edcf->eofpad = 0x06;
1720         }
1721         /* (see prism54/isl_oid.h for further details) */
1722         edcf->frameburst = cpu_to_le16(0);
1723         edcf->round_trip_delay = cpu_to_le16(0);
1724         edcf->flags = 0;
1725         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1726         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1727         priv->tx(dev, skb);
1728         return 0;
1729 }
1730
1731 static int p54_beacon_tim(struct sk_buff *skb)
1732 {
1733         /*
1734          * the good excuse for this mess is ... the firmware.
1735          * The dummy TIM MUST be at the end of the beacon frame,
1736          * because it'll be overwritten!
1737          */
1738
1739         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1740         u8 *pos, *end;
1741
1742         if (skb->len <= sizeof(mgmt))
1743                 return -EINVAL;
1744
1745         pos = (u8 *)mgmt->u.beacon.variable;
1746         end = skb->data + skb->len;
1747         while (pos < end) {
1748                 if (pos + 2 + pos[1] > end)
1749                         return -EINVAL;
1750
1751                 if (pos[0] == WLAN_EID_TIM) {
1752                         u8 dtim_len = pos[1];
1753                         u8 dtim_period = pos[3];
1754                         u8 *next = pos + 2 + dtim_len;
1755
1756                         if (dtim_len < 3)
1757                                 return -EINVAL;
1758
1759                         memmove(pos, next, end - next);
1760
1761                         if (dtim_len > 3)
1762                                 skb_trim(skb, skb->len - (dtim_len - 3));
1763
1764                         pos = end - (dtim_len + 2);
1765
1766                         /* add the dummy at the end */
1767                         pos[0] = WLAN_EID_TIM;
1768                         pos[1] = 3;
1769                         pos[2] = 0;
1770                         pos[3] = dtim_period;
1771                         pos[4] = 0;
1772                         return 0;
1773                 }
1774                 pos += 2 + pos[1];
1775         }
1776         return 0;
1777 }
1778
1779 static int p54_beacon_update(struct ieee80211_hw *dev,
1780                         struct ieee80211_vif *vif)
1781 {
1782         struct p54_common *priv = dev->priv;
1783         struct sk_buff *beacon;
1784         int ret;
1785
1786         if (priv->cached_beacon) {
1787                 p54_tx_cancel(dev, priv->cached_beacon);
1788                 /* wait for the last beacon the be freed */
1789                 msleep(10);
1790         }
1791
1792         beacon = ieee80211_beacon_get(dev, vif);
1793         if (!beacon)
1794                 return -ENOMEM;
1795         ret = p54_beacon_tim(beacon);
1796         if (ret)
1797                 return ret;
1798         ret = p54_tx(dev, beacon);
1799         if (ret)
1800                 return ret;
1801         priv->cached_beacon = beacon;
1802         priv->tsf_high32 = 0;
1803         priv->tsf_low32 = 0;
1804
1805         return 0;
1806 }
1807
1808 static int p54_start(struct ieee80211_hw *dev)
1809 {
1810         struct p54_common *priv = dev->priv;
1811         int err;
1812
1813         mutex_lock(&priv->conf_mutex);
1814         err = priv->open(dev);
1815         if (err)
1816                 goto out;
1817         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1818         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1819         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1820         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1821         err = p54_set_edcf(dev);
1822         if (err)
1823                 goto out;
1824
1825         memset(priv->bssid, ~0, ETH_ALEN);
1826         priv->mode = NL80211_IFTYPE_MONITOR;
1827         err = p54_setup_mac(dev);
1828         if (err) {
1829                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1830                 goto out;
1831         }
1832
1833         queue_delayed_work(dev->workqueue, &priv->work, 0);
1834
1835 out:
1836         mutex_unlock(&priv->conf_mutex);
1837         return err;
1838 }
1839
1840 static void p54_stop(struct ieee80211_hw *dev)
1841 {
1842         struct p54_common *priv = dev->priv;
1843         struct sk_buff *skb;
1844
1845         mutex_lock(&priv->conf_mutex);
1846         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1847         cancel_delayed_work_sync(&priv->work);
1848         if (priv->cached_beacon)
1849                 p54_tx_cancel(dev, priv->cached_beacon);
1850
1851         priv->stop(dev);
1852         while ((skb = skb_dequeue(&priv->tx_queue)))
1853                 kfree_skb(skb);
1854         priv->cached_beacon = NULL;
1855         priv->tsf_high32 = priv->tsf_low32 = 0;
1856         mutex_unlock(&priv->conf_mutex);
1857 }
1858
1859 static int p54_add_interface(struct ieee80211_hw *dev,
1860                              struct ieee80211_if_init_conf *conf)
1861 {
1862         struct p54_common *priv = dev->priv;
1863
1864         mutex_lock(&priv->conf_mutex);
1865         if (priv->mode != NL80211_IFTYPE_MONITOR) {
1866                 mutex_unlock(&priv->conf_mutex);
1867                 return -EOPNOTSUPP;
1868         }
1869
1870         switch (conf->type) {
1871         case NL80211_IFTYPE_STATION:
1872         case NL80211_IFTYPE_ADHOC:
1873         case NL80211_IFTYPE_AP:
1874         case NL80211_IFTYPE_MESH_POINT:
1875                 priv->mode = conf->type;
1876                 break;
1877         default:
1878                 mutex_unlock(&priv->conf_mutex);
1879                 return -EOPNOTSUPP;
1880         }
1881
1882         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1883         p54_setup_mac(dev);
1884         p54_set_leds(dev, 1, 0, 0);
1885         mutex_unlock(&priv->conf_mutex);
1886         return 0;
1887 }
1888
1889 static void p54_remove_interface(struct ieee80211_hw *dev,
1890                                  struct ieee80211_if_init_conf *conf)
1891 {
1892         struct p54_common *priv = dev->priv;
1893
1894         mutex_lock(&priv->conf_mutex);
1895         if (priv->cached_beacon)
1896                 p54_tx_cancel(dev, priv->cached_beacon);
1897         priv->mode = NL80211_IFTYPE_MONITOR;
1898         memset(priv->mac_addr, 0, ETH_ALEN);
1899         memset(priv->bssid, 0, ETH_ALEN);
1900         p54_setup_mac(dev);
1901         mutex_unlock(&priv->conf_mutex);
1902 }
1903
1904 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1905 {
1906         int ret = 0;
1907         struct p54_common *priv = dev->priv;
1908         struct ieee80211_conf *conf = &dev->conf;
1909
1910         mutex_lock(&priv->conf_mutex);
1911         if (changed & IEEE80211_CONF_CHANGE_POWER)
1912                 priv->output_power = conf->power_level << 2;
1913         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
1914                 ret = p54_setup_mac(dev);
1915                 if (ret)
1916                         goto out;
1917         }
1918         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1919                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1920                 if (ret)
1921                         goto out;
1922         }
1923
1924 out:
1925         mutex_unlock(&priv->conf_mutex);
1926         return ret;
1927 }
1928
1929 static int p54_config_interface(struct ieee80211_hw *dev,
1930                                 struct ieee80211_vif *vif,
1931                                 struct ieee80211_if_conf *conf)
1932 {
1933         struct p54_common *priv = dev->priv;
1934         int ret = 0;
1935
1936         mutex_lock(&priv->conf_mutex);
1937         if (conf->changed & IEEE80211_IFCC_BSSID) {
1938                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1939                 ret = p54_setup_mac(dev);
1940                 if (ret)
1941                         goto out;
1942         }
1943
1944         if (conf->changed & IEEE80211_IFCC_BEACON) {
1945                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1946                 if (ret)
1947                         goto out;
1948                 ret = p54_setup_mac(dev);
1949                 if (ret)
1950                         goto out;
1951                 ret = p54_beacon_update(dev, vif);
1952                 if (ret)
1953                         goto out;
1954                 ret = p54_set_edcf(dev);
1955                 if (ret)
1956                         goto out;
1957         }
1958
1959         ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
1960
1961 out:
1962         mutex_unlock(&priv->conf_mutex);
1963         return ret;
1964 }
1965
1966 static void p54_configure_filter(struct ieee80211_hw *dev,
1967                                  unsigned int changed_flags,
1968                                  unsigned int *total_flags,
1969                                  int mc_count, struct dev_mc_list *mclist)
1970 {
1971         struct p54_common *priv = dev->priv;
1972
1973         *total_flags &= FIF_PROMISC_IN_BSS |
1974                         (*total_flags & FIF_PROMISC_IN_BSS) ?
1975                                 FIF_FCSFAIL : 0;
1976
1977         priv->filter_flags = *total_flags;
1978
1979         if (changed_flags & FIF_PROMISC_IN_BSS)
1980                 p54_setup_mac(dev);
1981 }
1982
1983 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1984                        const struct ieee80211_tx_queue_params *params)
1985 {
1986         struct p54_common *priv = dev->priv;
1987         int ret;
1988
1989         mutex_lock(&priv->conf_mutex);
1990         if ((params) && !(queue > 4)) {
1991                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
1992                         params->cw_min, params->cw_max, params->txop);
1993                 ret = p54_set_edcf(dev);
1994         } else
1995                 ret = -EINVAL;
1996         mutex_unlock(&priv->conf_mutex);
1997         return ret;
1998 }
1999
2000 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2001 {
2002         struct p54_common *priv = dev->priv;
2003         struct sk_buff *skb;
2004         struct p54_xbow_synth *xbow;
2005
2006         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
2007                             sizeof(struct p54_hdr),
2008                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
2009                             GFP_KERNEL);
2010         if (!skb)
2011                 return -ENOMEM;
2012
2013         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2014         xbow->magic1 = cpu_to_le16(0x1);
2015         xbow->magic2 = cpu_to_le16(0x2);
2016         xbow->freq = cpu_to_le16(5390);
2017         memset(xbow->padding, 0, sizeof(xbow->padding));
2018         priv->tx(dev, skb);
2019         return 0;
2020 }
2021
2022 static void p54_work(struct work_struct *work)
2023 {
2024         struct p54_common *priv = container_of(work, struct p54_common,
2025                                                work.work);
2026         struct ieee80211_hw *dev = priv->hw;
2027         struct sk_buff *skb;
2028
2029         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2030                 return ;
2031
2032         /*
2033          * TODO: walk through tx_queue and do the following tasks
2034          *      1. initiate bursts.
2035          *      2. cancel stuck frames / reset the device if necessary.
2036          */
2037
2038         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(struct p54_hdr) +
2039                             sizeof(struct p54_statistics),
2040                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2041         if (!skb)
2042                 return ;
2043
2044         priv->tx(dev, skb);
2045 }
2046
2047 static int p54_get_stats(struct ieee80211_hw *dev,
2048                          struct ieee80211_low_level_stats *stats)
2049 {
2050         struct p54_common *priv = dev->priv;
2051
2052         memcpy(stats, &priv->stats, sizeof(*stats));
2053         return 0;
2054 }
2055
2056 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2057                             struct ieee80211_tx_queue_stats *stats)
2058 {
2059         struct p54_common *priv = dev->priv;
2060
2061         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2062                sizeof(stats[0]) * dev->queues);
2063         return 0;
2064 }
2065
2066 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2067                                  struct ieee80211_vif *vif,
2068                                  struct ieee80211_bss_conf *info,
2069                                  u32 changed)
2070 {
2071         struct p54_common *priv = dev->priv;
2072
2073         if (changed & BSS_CHANGED_ERP_SLOT) {
2074                 priv->use_short_slot = info->use_short_slot;
2075                 p54_set_edcf(dev);
2076         }
2077         if (changed & BSS_CHANGED_BASIC_RATES) {
2078                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2079                         priv->basic_rate_mask = (info->basic_rates << 4);
2080                 else
2081                         priv->basic_rate_mask = info->basic_rates;
2082                 p54_setup_mac(dev);
2083                 if (priv->fw_var >= 0x500)
2084                         p54_scan(dev, P54_SCAN_EXIT, 0);
2085         }
2086         if (changed & BSS_CHANGED_ASSOC) {
2087                 if (info->assoc) {
2088                         priv->aid = info->aid;
2089                         priv->wakeup_timer = info->beacon_int *
2090                                              info->dtim_period * 5;
2091                         p54_setup_mac(dev);
2092                 }
2093         }
2094
2095 }
2096
2097 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2098                        const u8 *local_address, const u8 *address,
2099                        struct ieee80211_key_conf *key)
2100 {
2101         struct p54_common *priv = dev->priv;
2102         struct sk_buff *skb;
2103         struct p54_keycache *rxkey;
2104         u8 algo = 0;
2105
2106         if (modparam_nohwcrypt)
2107                 return -EOPNOTSUPP;
2108
2109         if (cmd == DISABLE_KEY)
2110                 algo = 0;
2111         else {
2112                 switch (key->alg) {
2113                 case ALG_TKIP:
2114                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2115                               BR_DESC_PRIV_CAP_TKIP)))
2116                                 return -EOPNOTSUPP;
2117                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2118                         algo = P54_CRYPTO_TKIPMICHAEL;
2119                         break;
2120                 case ALG_WEP:
2121                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2122                                 return -EOPNOTSUPP;
2123                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2124                         algo = P54_CRYPTO_WEP;
2125                         break;
2126                 case ALG_CCMP:
2127                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2128                                 return -EOPNOTSUPP;
2129                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2130                         algo = P54_CRYPTO_AESCCMP;
2131                         break;
2132                 default:
2133                         return -EOPNOTSUPP;
2134                 }
2135         }
2136
2137         if (key->keyidx > priv->rx_keycache_size) {
2138                 /*
2139                  * The device supports the choosen algorithm, but the firmware
2140                  * does not provide enough key slots to store all of them.
2141                  * So, incoming frames have to be decoded by the mac80211 stack,
2142                  * but we can still offload encryption for outgoing frames.
2143                  */
2144
2145                 return 0;
2146         }
2147
2148         mutex_lock(&priv->conf_mutex);
2149         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
2150                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
2151                         GFP_ATOMIC);
2152         if (!skb) {
2153                 mutex_unlock(&priv->conf_mutex);
2154                 return -ENOMEM;
2155         }
2156
2157         /* TODO: some devices have 4 more free slots for rx keys */
2158         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2159         rxkey->entry = key->keyidx;
2160         rxkey->key_id = key->keyidx;
2161         rxkey->key_type = algo;
2162         if (address)
2163                 memcpy(rxkey->mac, address, ETH_ALEN);
2164         else
2165                 memset(rxkey->mac, ~0, ETH_ALEN);
2166         if (key->alg != ALG_TKIP) {
2167                 rxkey->key_len = min((u8)16, key->keylen);
2168                 memcpy(rxkey->key, key->key, rxkey->key_len);
2169         } else {
2170                 rxkey->key_len = 24;
2171                 memcpy(rxkey->key, key->key, 16);
2172                 memcpy(&(rxkey->key[16]), &(key->key
2173                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2174         }
2175
2176         priv->tx(dev, skb);
2177         mutex_unlock(&priv->conf_mutex);
2178         return 0;
2179 }
2180
2181 static const struct ieee80211_ops p54_ops = {
2182         .tx                     = p54_tx,
2183         .start                  = p54_start,
2184         .stop                   = p54_stop,
2185         .add_interface          = p54_add_interface,
2186         .remove_interface       = p54_remove_interface,
2187         .set_tim                = p54_set_tim,
2188         .sta_notify             = p54_sta_notify,
2189         .set_key                = p54_set_key,
2190         .config                 = p54_config,
2191         .config_interface       = p54_config_interface,
2192         .bss_info_changed       = p54_bss_info_changed,
2193         .configure_filter       = p54_configure_filter,
2194         .conf_tx                = p54_conf_tx,
2195         .get_stats              = p54_get_stats,
2196         .get_tx_stats           = p54_get_tx_stats
2197 };
2198
2199 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2200 {
2201         struct ieee80211_hw *dev;
2202         struct p54_common *priv;
2203
2204         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2205         if (!dev)
2206                 return NULL;
2207
2208         priv = dev->priv;
2209         priv->hw = dev;
2210         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2211         priv->basic_rate_mask = 0x15f;
2212         skb_queue_head_init(&priv->tx_queue);
2213         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2214                      IEEE80211_HW_SIGNAL_DBM |
2215                      IEEE80211_HW_NOISE_DBM;
2216
2217         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2218                                       BIT(NL80211_IFTYPE_ADHOC) |
2219                                       BIT(NL80211_IFTYPE_AP) |
2220                                       BIT(NL80211_IFTYPE_MESH_POINT);
2221
2222         dev->channel_change_time = 1000;        /* TODO: find actual value */
2223         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2224         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2225         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2226         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2227         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2228         dev->queues = 1;
2229         priv->noise = -94;
2230         /*
2231          * We support at most 8 tries no matter which rate they're at,
2232          * we cannot support max_rates * max_rate_tries as we set it
2233          * here, but setting it correctly to 4/2 or so would limit us
2234          * artificially if the RC algorithm wants just two rates, so
2235          * let's say 4/7, we'll redistribute it at TX time, see the
2236          * comments there.
2237          */
2238         dev->max_rates = 4;
2239         dev->max_rate_tries = 7;
2240         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2241                                  sizeof(struct p54_tx_data);
2242
2243         mutex_init(&priv->conf_mutex);
2244         init_completion(&priv->eeprom_comp);
2245         INIT_DELAYED_WORK(&priv->work, p54_work);
2246
2247         return dev;
2248 }
2249 EXPORT_SYMBOL_GPL(p54_init_common);
2250
2251 void p54_free_common(struct ieee80211_hw *dev)
2252 {
2253         struct p54_common *priv = dev->priv;
2254         kfree(priv->iq_autocal);
2255         kfree(priv->output_limit);
2256         kfree(priv->curve_data);
2257 }
2258 EXPORT_SYMBOL_GPL(p54_free_common);
2259
2260 static int __init p54_init(void)
2261 {
2262         return 0;
2263 }
2264
2265 static void __exit p54_exit(void)
2266 {
2267 }
2268
2269 module_init(p54_init);
2270 module_exit(p54_exit);