drivers/net/wireless/p54/p54common.c

   1
   2 /*
   3  * Common code for mac80211 Prism54 drivers
   4  *
   5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   6  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   7  *
   8  * Based on the islsm (softmac prism54) driver, which is:
   9  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/firmware.h>
  18 #include <linux/etherdevice.h>
  19
  20 #include <net/mac80211.h>
  21
  22 #include "p54.h"
  23 #include "p54common.h"
  24
  25 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  26 MODULE_DESCRIPTION("Softmac Prism54 common code");
  27 MODULE_LICENSE("GPL");
  28 MODULE_ALIAS("prism54common");
  29
  30 static struct ieee80211_rate p54_rates[] = {
  31         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  32         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  33         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  34         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  35         { .bitrate = 60, .hw_value = 4, },
  36         { .bitrate = 90, .hw_value = 5, },
  37         { .bitrate = 120, .hw_value = 6, },
  38         { .bitrate = 180, .hw_value = 7, },
  39         { .bitrate = 240, .hw_value = 8, },
  40         { .bitrate = 360, .hw_value = 9, },
  41         { .bitrate = 480, .hw_value = 10, },
  42         { .bitrate = 540, .hw_value = 11, },
  43 };
  44
  45 static struct ieee80211_channel p54_channels[] = {
  46         { .center_freq = 2412, .hw_value = 1, },
  47         { .center_freq = 2417, .hw_value = 2, },
  48         { .center_freq = 2422, .hw_value = 3, },
  49         { .center_freq = 2427, .hw_value = 4, },
  50         { .center_freq = 2432, .hw_value = 5, },
  51         { .center_freq = 2437, .hw_value = 6, },
  52         { .center_freq = 2442, .hw_value = 7, },
  53         { .center_freq = 2447, .hw_value = 8, },
  54         { .center_freq = 2452, .hw_value = 9, },
  55         { .center_freq = 2457, .hw_value = 10, },
  56         { .center_freq = 2462, .hw_value = 11, },
  57         { .center_freq = 2467, .hw_value = 12, },
  58         { .center_freq = 2472, .hw_value = 13, },
  59         { .center_freq = 2484, .hw_value = 14, },
  60 };
  61
  62 static struct ieee80211_supported_band band_2GHz = {
  63         .channels = p54_channels,
  64         .n_channels = ARRAY_SIZE(p54_channels),
  65         .bitrates = p54_rates,
  66         .n_bitrates = ARRAY_SIZE(p54_rates),
  67 };
  68
  69 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  70 {
  71         struct p54_common *priv = dev->priv;
  72         struct bootrec_exp_if *exp_if;
  73         struct bootrec *bootrec;
  74         u32 *data = (u32 *)fw->data;
  75         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  76         u8 *fw_version = NULL;
  77         size_t len;
  78         int i;
  79
  80         if (priv->rx_start)
  81                 return 0;
  82
  83         while (data < end_data && *data)
  84                 data++;
  85
  86         while (data < end_data && !*data)
  87                 data++;
  88
  89         bootrec = (struct bootrec *) data;
  90
  91         while (bootrec->data <= end_data &&
  92                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
  93                 u32 code = le32_to_cpu(bootrec->code);
  94                 switch (code) {
  95                 case BR_CODE_COMPONENT_ID:
  96                         switch (be32_to_cpu(*(__be32 *)bootrec->data)) {
  97                         case FW_FMAC:
  98                                 printk(KERN_INFO "p54: FreeMAC firmware\n");
  99                                 break;
 100                         case FW_LM20:
 101                                 printk(KERN_INFO "p54: LM20 firmware\n");
 102                                 break;
 103                         case FW_LM86:
 104                                 printk(KERN_INFO "p54: LM86 firmware\n");
 105                                 break;
 106                         case FW_LM87:
 107                                 printk(KERN_INFO "p54: LM87 firmware - not supported yet!\n");
 108                                 break;
 109                         default:
 110                                 printk(KERN_INFO "p54: unknown firmware\n");
 111                                 break;
 112                         }
 113                         break;
 114                 case BR_CODE_COMPONENT_VERSION:
 115                         /* 24 bytes should be enough for all firmwares */
 116                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 117                                 fw_version = (unsigned char*)bootrec->data;
 118                         break;
 119                 case BR_CODE_DESCR: {
 120                         struct bootrec_desc *desc =
 121                                 (struct bootrec_desc *)bootrec->data;
 122                         priv->rx_start = le32_to_cpu(desc->rx_start);
 123                         /* FIXME add sanity checking */
 124                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 125                         priv->headroom = desc->headroom;
 126                         priv->tailroom = desc->tailroom;
 127                         if (bootrec->len == 11)
 128                                 priv->rx_mtu = (size_t) le16_to_cpu(
 129                                         (__le16)bootrec->data[10]);
 130                         else
 131                                 priv->rx_mtu = (size_t)
 132                                         0x620 - priv->tx_hdr_len;
 133                         break;
 134                         }
 135                 case BR_CODE_EXPOSED_IF:
 136                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 137                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 138                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 139                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 140                         break;
 141                 case BR_CODE_DEPENDENT_IF:
 142                         break;
 143                 case BR_CODE_END_OF_BRA:
 144                 case LEGACY_BR_CODE_END_OF_BRA:
 145                         end_data = NULL;
 146                         break;
 147                 default:
 148                         break;
 149                 }
 150                 bootrec = (struct bootrec *)&bootrec->data[len];
 151         }
 152
 153         if (fw_version)
 154                 printk(KERN_INFO "p54: FW rev %s - Softmac protocol %x.%x\n",
 155                         fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
 156
 157         if (priv->fw_var >= 0x300) {
 158                 /* Firmware supports QoS, use it! */
 159                 priv->tx_stats[4].limit = 3;
 160                 priv->tx_stats[5].limit = 4;
 161                 priv->tx_stats[6].limit = 3;
 162                 priv->tx_stats[7].limit = 1;
 163                 dev->queues = 4;
 164         }
 165
 166         return 0;
 167 }
 168 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 169
 170 static int p54_convert_rev0(struct ieee80211_hw *dev,
 171                             struct pda_pa_curve_data *curve_data)
 172 {
 173         struct p54_common *priv = dev->priv;
 174         struct p54_pa_curve_data_sample *dst;
 175         struct pda_pa_curve_data_sample_rev0 *src;
 176         size_t cd_len = sizeof(*curve_data) +
 177                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 178                  curve_data->channels;
 179         unsigned int i, j;
 180         void *source, *target;
 181
 182         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 183         if (!priv->curve_data)
 184                 return -ENOMEM;
 185
 186         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 187         source = curve_data->data;
 188         target = priv->curve_data->data;
 189         for (i = 0; i < curve_data->channels; i++) {
 190                 __le16 *freq = source;
 191                 source += sizeof(__le16);
 192                 *((__le16 *)target) = *freq;
 193                 target += sizeof(__le16);
 194                 for (j = 0; j < curve_data->points_per_channel; j++) {
 195                         dst = target;
 196                         src = source;
 197
 198                         dst->rf_power = src->rf_power;
 199                         dst->pa_detector = src->pa_detector;
 200                         dst->data_64qam = src->pcv;
 201                         /* "invent" the points for the other modulations */
 202 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 203                         dst->data_16qam = SUB(src->pcv, 12);
 204                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 205                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 206                         dst->data_barker = SUB(dst->data_bpsk, 14);
 207 #undef SUB
 208                         target += sizeof(*dst);
 209                         source += sizeof(*src);
 210                 }
 211         }
 212
 213         return 0;
 214 }
 215
 216 static int p54_convert_rev1(struct ieee80211_hw *dev,
 217                             struct pda_pa_curve_data *curve_data)
 218 {
 219         struct p54_common *priv = dev->priv;
 220         struct p54_pa_curve_data_sample *dst;
 221         struct pda_pa_curve_data_sample_rev1 *src;
 222         size_t cd_len = sizeof(*curve_data) +
 223                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 224                  curve_data->channels;
 225         unsigned int i, j;
 226         void *source, *target;
 227
 228         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 229         if (!priv->curve_data)
 230                 return -ENOMEM;
 231
 232         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 233         source = curve_data->data;
 234         target = priv->curve_data->data;
 235         for (i = 0; i < curve_data->channels; i++) {
 236                 __le16 *freq = source;
 237                 source += sizeof(__le16);
 238                 *((__le16 *)target) = *freq;
 239                 target += sizeof(__le16);
 240                 for (j = 0; j < curve_data->points_per_channel; j++) {
 241                         memcpy(target, source, sizeof(*src));
 242
 243                         target += sizeof(*dst);
 244                         source += sizeof(*src);
 245                 }
 246                 source++;
 247         }
 248
 249         return 0;
 250 }
 251
 252 const char* p54_rf_chips[] = { "NULL", "Indigo?", "Duette",
 253                               "Frisbee", "Xbow", "Longbow" };
 254
 255 int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 256 {
 257         struct p54_common *priv = dev->priv;
 258         struct eeprom_pda_wrap *wrap = NULL;
 259         struct pda_entry *entry;
 260         unsigned int data_len, entry_len;
 261         void *tmp;
 262         int err;
 263         u8 *end = (u8 *)eeprom + len;
 264         DECLARE_MAC_BUF(mac);
 265
 266         wrap = (struct eeprom_pda_wrap *) eeprom;
 267         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 268
 269         /* verify that at least the entry length/code fits */
 270         while ((u8 *)entry <= end - sizeof(*entry)) {
 271                 entry_len = le16_to_cpu(entry->len);
 272                 data_len = ((entry_len - 1) << 1);
 273
 274                 /* abort if entry exceeds whole structure */
 275                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 276                         break;
 277
 278                 switch (le16_to_cpu(entry->code)) {
 279                 case PDR_MAC_ADDRESS:
 280                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 281                         break;
 282                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 283                         if (data_len < 2) {
 284                                 err = -EINVAL;
 285                                 goto err;
 286                         }
 287
 288                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
 289                                 err = -EINVAL;
 290                                 goto err;
 291                         }
 292
 293                         priv->output_limit = kmalloc(entry->data[1] *
 294                                 sizeof(*priv->output_limit), GFP_KERNEL);
 295
 296                         if (!priv->output_limit) {
 297                                 err = -ENOMEM;
 298                                 goto err;
 299                         }
 300
 301                         memcpy(priv->output_limit, &entry->data[2],
 302                                entry->data[1]*sizeof(*priv->output_limit));
 303                         priv->output_limit_len = entry->data[1];
 304                         break;
 305                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 306                         struct pda_pa_curve_data *curve_data =
 307                                 (struct pda_pa_curve_data *)entry->data;
 308                         if (data_len < sizeof(*curve_data)) {
 309                                 err = -EINVAL;
 310                                 goto err;
 311                         }
 312
 313                         switch (curve_data->cal_method_rev) {
 314                         case 0:
 315                                 err = p54_convert_rev0(dev, curve_data);
 316                                 break;
 317                         case 1:
 318                                 err = p54_convert_rev1(dev, curve_data);
 319                                 break;
 320                         default:
 321                                 printk(KERN_ERR "p54: unknown curve data "
 322                                                 "revision %d\n",
 323                                                 curve_data->cal_method_rev);
 324                                 err = -ENODEV;
 325                                 break;
 326                         }
 327                         if (err)
 328                                 goto err;
 329
 330                 }
 331                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 332                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 333                         if (!priv->iq_autocal) {
 334                                 err = -ENOMEM;
 335                                 goto err;
 336                         }
 337
 338                         memcpy(priv->iq_autocal, entry->data, data_len);
 339                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 340                         break;
 341                 case PDR_INTERFACE_LIST:
 342                         tmp = entry->data;
 343                         while ((u8 *)tmp < entry->data + data_len) {
 344                                 struct bootrec_exp_if *exp_if = tmp;
 345                                 if (le16_to_cpu(exp_if->if_id) == 0xF)
 346                                         priv->rxhw = le16_to_cpu(exp_if->variant) & 0x07;
 347                                 tmp += sizeof(struct bootrec_exp_if);
 348                         }
 349                         break;
 350                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 351                         priv->version = *(u8 *)(entry->data + 1);
 352                         break;
 353                 case PDR_END:
 354                         /* make it overrun */
 355                         entry_len = len;
 356                         break;
 357                 default:
 358                         printk(KERN_INFO "p54: unknown eeprom code : 0x%x\n",
 359                                 le16_to_cpu(entry->code));
 360                         break;
 361                 }
 362
 363                 entry = (void *)entry + (entry_len + 1)*2;
 364         }
 365
 366         if (!priv->iq_autocal || !priv->output_limit || !priv->curve_data) {
 367                 printk(KERN_ERR "p54: not all required entries found in eeprom!\n");
 368                 err = -EINVAL;
 369                 goto err;
 370         }
 371
 372         switch (priv->rxhw) {
 373                 case 4: /* XBow */
 374                 case 1: /* Indigo? */
 375                 case 2: /* Duette */
 376                         /* TODO: 5GHz initialization goes here */
 377
 378                 case 3: /* Frisbee */
 379                 case 5: /* Longbow */
 380                         dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 381                         break;
 382                 default:
 383                         printk(KERN_ERR "%s: unsupported RF-Chip\n",
 384                                 wiphy_name(dev->wiphy));
 385                         err = -EINVAL;
 386                         goto err;
 387         }
 388
 389         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 390                 u8 perm_addr[ETH_ALEN];
 391
 392                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 393                         wiphy_name(dev->wiphy));
 394                 random_ether_addr(perm_addr);
 395                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 396         }
 397
 398         printk(KERN_INFO "%s: hwaddr %s, MAC:isl38%02x RF:%s\n",
 399                 wiphy_name(dev->wiphy),
 400                 print_mac(mac, dev->wiphy->perm_addr),
 401                 priv->version, p54_rf_chips[priv->rxhw]);
 402
 403         return 0;
 404
 405   err:
 406         if (priv->iq_autocal) {
 407                 kfree(priv->iq_autocal);
 408                 priv->iq_autocal = NULL;
 409         }
 410
 411         if (priv->output_limit) {
 412                 kfree(priv->output_limit);
 413                 priv->output_limit = NULL;
 414         }
 415
 416         if (priv->curve_data) {
 417                 kfree(priv->curve_data);
 418                 priv->curve_data = NULL;
 419         }
 420
 421         printk(KERN_ERR "p54: eeprom parse failed!\n");
 422         return err;
 423 }
 424 EXPORT_SYMBOL_GPL(p54_parse_eeprom);
 425
 426 static void p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 427 {
 428         struct p54_rx_hdr *hdr = (struct p54_rx_hdr *) skb->data;
 429         struct ieee80211_rx_status rx_status = {0};
 430         u16 freq = le16_to_cpu(hdr->freq);
 431
 432         rx_status.signal = hdr->rssi;
 433         /* XX correct? */
 434         rx_status.qual = (100 * hdr->rssi) / 127;
 435         rx_status.rate_idx = hdr->rate & 0xf;
 436         rx_status.freq = freq;
 437         rx_status.band = IEEE80211_BAND_2GHZ;
 438         rx_status.antenna = hdr->antenna;
 439         rx_status.mactime = le64_to_cpu(hdr->timestamp);
 440         rx_status.flag |= RX_FLAG_TSFT;
 441
 442         skb_pull(skb, sizeof(*hdr));
 443         skb_trim(skb, le16_to_cpu(hdr->len));
 444
 445         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 446 }
 447
 448 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 449 {
 450         struct p54_common *priv = dev->priv;
 451         int i;
 452
 453         for (i = 0; i < dev->queues; i++)
 454                 if (priv->tx_stats[i + 4].len < priv->tx_stats[i + 4].limit)
 455                         ieee80211_wake_queue(dev, i);
 456 }
 457
 458 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 459 {
 460         struct p54_common *priv = dev->priv;
 461         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 462         struct p54_frame_sent_hdr *payload = (struct p54_frame_sent_hdr *) hdr->data;
 463         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 464         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 465         struct memrecord *range = NULL;
 466         u32 freed = 0;
 467         u32 last_addr = priv->rx_start;
 468         unsigned long flags;
 469
 470         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 471         while (entry != (struct sk_buff *)&priv->tx_queue) {
 472                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 473                 range = (void *)info->driver_data;
 474                 if (range->start_addr == addr) {
 475                         struct p54_control_hdr *entry_hdr;
 476                         struct p54_tx_control_allocdata *entry_data;
 477                         int pad = 0;
 478
 479                         if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 480                                 struct ieee80211_tx_info *ni;
 481                                 struct memrecord *mr;
 482
 483                                 ni = IEEE80211_SKB_CB(entry->next);
 484                                 mr = (struct memrecord *)ni->driver_data;
 485                                 freed = mr->start_addr - last_addr;
 486                         } else
 487                                 freed = priv->rx_end - last_addr;
 488
 489                         last_addr = range->end_addr;
 490                         __skb_unlink(entry, &priv->tx_queue);
 491                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 492
 493                         memset(&info->status, 0, sizeof(info->status));
 494                         entry_hdr = (struct p54_control_hdr *) entry->data;
 495                         entry_data = (struct p54_tx_control_allocdata *) entry_hdr->data;
 496                         if ((entry_hdr->magic1 & cpu_to_le16(0x4000)) != 0)
 497                                 pad = entry_data->align[0];
 498
 499                         priv->tx_stats[entry_data->hw_queue].len--;
 500                         if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 501                                 if (!(payload->status & 0x01))
 502                                         info->flags |= IEEE80211_TX_STAT_ACK;
 503                                 else
 504                                         info->status.excessive_retries = 1;
 505                         }
 506                         info->status.retry_count = payload->retries - 1;
 507                         info->status.ack_signal = le16_to_cpu(payload->ack_rssi);
 508                         skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 509                         ieee80211_tx_status_irqsafe(dev, entry);
 510                         goto out;
 511                 } else
 512                         last_addr = range->end_addr;
 513                 entry = entry->next;
 514         }
 515         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 516
 517 out:
 518         if (freed >= IEEE80211_MAX_RTS_THRESHOLD + 0x170 +
 519             sizeof(struct p54_control_hdr))
 520                 p54_wake_free_queues(dev);
 521 }
 522
 523 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 524                                    struct sk_buff *skb)
 525 {
 526         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 527         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
 528         struct p54_common *priv = dev->priv;
 529
 530         if (!priv->eeprom)
 531                 return ;
 532
 533         memcpy(priv->eeprom, eeprom->data, eeprom->len);
 534
 535         complete(&priv->eeprom_comp);
 536 }
 537
 538 static void p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
 539 {
 540         struct p54_control_hdr *hdr = (struct p54_control_hdr *) skb->data;
 541
 542         switch (le16_to_cpu(hdr->type)) {
 543         case P54_CONTROL_TYPE_TXDONE:
 544                 p54_rx_frame_sent(dev, skb);
 545                 break;
 546         case P54_CONTROL_TYPE_BBP:
 547                 break;
 548         case P54_CONTROL_TYPE_EEPROM_READBACK:
 549                 p54_rx_eeprom_readback(dev, skb);
 550                 break;
 551         default:
 552                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
 553                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
 554                 break;
 555         }
 556 }
 557
 558 /* returns zero if skb can be reused */
 559 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
 560 {
 561         u8 type = le16_to_cpu(*((__le16 *)skb->data)) >> 8;
 562         switch (type) {
 563         case 0x00:
 564         case 0x01:
 565                 p54_rx_data(dev, skb);
 566                 return -1;
 567         case 0x4d:
 568                 /* TODO: do something better... but then again, I've never seen this happen */
 569                 printk(KERN_ERR "%s: Received fault. Probably need to restart hardware now..\n",
 570                        wiphy_name(dev->wiphy));
 571                 break;
 572         case 0x80:
 573                 p54_rx_control(dev, skb);
 574                 break;
 575         default:
 576                 printk(KERN_ERR "%s: unknown frame RXed (0x%02x)\n",
 577                        wiphy_name(dev->wiphy), type);
 578                 break;
 579         }
 580         return 0;
 581 }
 582 EXPORT_SYMBOL_GPL(p54_rx);
 583
 584 /*
 585  * So, the firmware is somewhat stupid and doesn't know what places in its
 586  * memory incoming data should go to. By poking around in the firmware, we
 587  * can find some unused memory to upload our packets to. However, data that we
 588  * want the card to TX needs to stay intact until the card has told us that
 589  * it is done with it. This function finds empty places we can upload to and
 590  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
 591  * allocated areas.
 592  */
 593 static void p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
 594                                struct p54_control_hdr *data, u32 len)
 595 {
 596         struct p54_common *priv = dev->priv;
 597         struct sk_buff *entry = priv->tx_queue.next;
 598         struct sk_buff *target_skb = NULL;
 599         u32 last_addr = priv->rx_start;
 600         u32 largest_hole = 0;
 601         u32 target_addr = priv->rx_start;
 602         unsigned long flags;
 603         unsigned int left;
 604         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
 605
 606         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 607         left = skb_queue_len(&priv->tx_queue);
 608         while (left--) {
 609                 u32 hole_size;
 610                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 611                 struct memrecord *range = (void *)info->driver_data;
 612                 hole_size = range->start_addr - last_addr;
 613                 if (!target_skb && hole_size >= len) {
 614                         target_skb = entry->prev;
 615                         hole_size -= len;
 616                         target_addr = last_addr;
 617                 }
 618                 largest_hole = max(largest_hole, hole_size);
 619                 last_addr = range->end_addr;
 620                 entry = entry->next;
 621         }
 622         if (!target_skb && priv->rx_end - last_addr >= len) {
 623                 target_skb = priv->tx_queue.prev;
 624                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
 625                 if (!skb_queue_empty(&priv->tx_queue)) {
 626                         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(target_skb);
 627                         struct memrecord *range = (void *)info->driver_data;
 628                         target_addr = range->end_addr;
 629                 }
 630         } else
 631                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
 632
 633         if (skb) {
 634                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 635                 struct memrecord *range = (void *)info->driver_data;
 636                 range->start_addr = target_addr;
 637                 range->end_addr = target_addr + len;
 638                 __skb_queue_after(&priv->tx_queue, target_skb, skb);
 639                 if (largest_hole < priv->rx_mtu + priv->headroom +
 640                                    priv->tailroom +
 641                                    sizeof(struct p54_control_hdr))
 642                         ieee80211_stop_queues(dev);
 643         }
 644         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 645
 646         data->req_id = cpu_to_le32(target_addr + priv->headroom);
 647 }
 648
 649 int p54_read_eeprom(struct ieee80211_hw *dev)
 650 {
 651         struct p54_common *priv = dev->priv;
 652         struct p54_control_hdr *hdr = NULL;
 653         struct p54_eeprom_lm86 *eeprom_hdr;
 654         size_t eeprom_size = 0x2020, offset = 0, blocksize;
 655         int ret = -ENOMEM;
 656         void *eeprom = NULL;
 657
 658         hdr = (struct p54_control_hdr *)kzalloc(sizeof(*hdr) +
 659                 sizeof(*eeprom_hdr) + EEPROM_READBACK_LEN, GFP_KERNEL);
 660         if (!hdr)
 661                 goto free;
 662
 663         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
 664         if (!priv->eeprom)
 665                 goto free;
 666
 667         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
 668         if (!eeprom)
 669                 goto free;
 670
 671         hdr->magic1 = cpu_to_le16(0x8000);
 672         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_EEPROM_READBACK);
 673         hdr->retry1 = hdr->retry2 = 0;
 674         eeprom_hdr = (struct p54_eeprom_lm86 *) hdr->data;
 675
 676         while (eeprom_size) {
 677                 blocksize = min(eeprom_size, (size_t)EEPROM_READBACK_LEN);
 678                 hdr->len = cpu_to_le16(blocksize + sizeof(*eeprom_hdr));
 679                 eeprom_hdr->offset = cpu_to_le16(offset);
 680                 eeprom_hdr->len = cpu_to_le16(blocksize);
 681                 p54_assign_address(dev, NULL, hdr, hdr->len + sizeof(*hdr));
 682                 priv->tx(dev, hdr, hdr->len + sizeof(*hdr), 0);
 683
 684                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
 685                         printk(KERN_ERR "%s: device does not respond!\n",
 686                                 wiphy_name(dev->wiphy));
 687                         ret = -EBUSY;
 688                         goto free;
 689                 }
 690
 691                 memcpy(eeprom + offset, priv->eeprom, blocksize);
 692                 offset += blocksize;
 693                 eeprom_size -= blocksize;
 694         }
 695
 696         ret = p54_parse_eeprom(dev, eeprom, offset);
 697 free:
 698         kfree(priv->eeprom);
 699         priv->eeprom = NULL;
 700         kfree(hdr);
 701         kfree(eeprom);
 702
 703         return ret;
 704 }
 705 EXPORT_SYMBOL_GPL(p54_read_eeprom);
 706
 707 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
 708 {
 709         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 710         struct ieee80211_tx_queue_stats *current_queue;
 711         struct p54_common *priv = dev->priv;
 712         struct p54_control_hdr *hdr;
 713         struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data;
 714         struct p54_tx_control_allocdata *txhdr;
 715         size_t padding, len;
 716         u8 rate;
 717         u8 cts_rate = 0x20;
 718
 719         current_queue = &priv->tx_stats[skb_get_queue_mapping(skb) + 4];
 720         if (unlikely(current_queue->len > current_queue->limit))
 721                 return NETDEV_TX_BUSY;
 722         current_queue->len++;
 723         current_queue->count++;
 724         if (current_queue->len == current_queue->limit)
 725                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
 726
 727         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
 728         len = skb->len;
 729
 730         txhdr = (struct p54_tx_control_allocdata *)
 731                         skb_push(skb, sizeof(*txhdr) + padding);
 732         hdr = (struct p54_control_hdr *) skb_push(skb, sizeof(*hdr));
 733
 734         if (padding)
 735                 hdr->magic1 = cpu_to_le16(0x4010);
 736         else
 737                 hdr->magic1 = cpu_to_le16(0x0010);
 738         hdr->len = cpu_to_le16(len);
 739         hdr->type = (info->flags & IEEE80211_TX_CTL_NO_ACK) ? 0 : cpu_to_le16(1);
 740         hdr->retry1 = hdr->retry2 = info->control.retry_limit;
 741
 742         /* TODO: add support for alternate retry TX rates */
 743         rate = ieee80211_get_tx_rate(dev, info)->hw_value;
 744         if (info->flags & IEEE80211_TX_CTL_SHORT_PREAMBLE) {
 745                 rate |= 0x10;
 746                 cts_rate |= 0x10;
 747         }
 748         if (info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 749                 rate |= 0x40;
 750                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
 751         } else if (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) {
 752                 rate |= 0x20;
 753                 cts_rate |= ieee80211_get_rts_cts_rate(dev, info)->hw_value;
 754         }
 755         memset(txhdr->rateset, rate, 8);
 756         txhdr->key_type = 0;
 757         txhdr->key_len = 0;
 758         txhdr->hw_queue = skb_get_queue_mapping(skb) + 4;
 759         txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
 760                 2 : info->antenna_sel_tx - 1;
 761         txhdr->output_power = 0x7f; // HW Maximum
 762         txhdr->cts_rate = (info->flags & IEEE80211_TX_CTL_NO_ACK) ?
 763                           0 : cts_rate;
 764         if (padding)
 765                 txhdr->align[0] = padding;
 766
 767         /* FIXME: The sequence that follows is needed for this driver to
 768          * work with mac80211 since "mac80211: fix TX sequence numbers".
 769          * As with the temporary code in rt2x00, changes will be needed
 770          * to get proper sequence numbers on beacons. In addition, this
 771          * patch places the sequence number in the hardware state, which
 772          * limits us to a single virtual state.
 773          */
 774         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
 775                 if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
 776                         priv->seqno += 0x10;
 777                 ieee80211hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 778                 ieee80211hdr->seq_ctrl |= cpu_to_le16(priv->seqno);
 779         }
 780         /* modifies skb->cb and with it info, so must be last! */
 781         p54_assign_address(dev, skb, hdr, skb->len);
 782
 783         priv->tx(dev, hdr, skb->len, 0);
 784         return 0;
 785 }
 786
 787 static int p54_set_filter(struct ieee80211_hw *dev, u16 filter_type,
 788                           const u8 *dst, const u8 *src, u8 antenna,
 789                           u32 magic3, u32 magic8, u32 magic9)
 790 {
 791         struct p54_common *priv = dev->priv;
 792         struct p54_control_hdr *hdr;
 793         struct p54_tx_control_filter *filter;
 794
 795         hdr = kzalloc(sizeof(*hdr) + sizeof(*filter) +
 796                       priv->tx_hdr_len, GFP_ATOMIC);
 797         if (!hdr)
 798                 return -ENOMEM;
 799
 800         hdr = (void *)hdr + priv->tx_hdr_len;
 801
 802         filter = (struct p54_tx_control_filter *) hdr->data;
 803         hdr->magic1 = cpu_to_le16(0x8001);
 804         hdr->len = cpu_to_le16(sizeof(*filter));
 805         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*filter));
 806         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_FILTER_SET);
 807
 808         filter->filter_type = cpu_to_le16(filter_type);
 809         memcpy(filter->dst, dst, ETH_ALEN);
 810         if (!src)
 811                 memset(filter->src, ~0, ETH_ALEN);
 812         else
 813                 memcpy(filter->src, src, ETH_ALEN);
 814         filter->antenna = antenna;
 815         filter->magic3 = cpu_to_le32(magic3);
 816         filter->rx_addr = cpu_to_le32(priv->rx_end);
 817         filter->max_rx = cpu_to_le16(priv->rx_mtu);
 818         filter->rxhw = cpu_to_le16(priv->rxhw);
 819         filter->magic8 = cpu_to_le16(magic8);
 820         filter->magic9 = cpu_to_le16(magic9);
 821
 822         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*filter), 1);
 823         return 0;
 824 }
 825
 826 static int p54_set_freq(struct ieee80211_hw *dev, __le16 freq)
 827 {
 828         struct p54_common *priv = dev->priv;
 829         struct p54_control_hdr *hdr;
 830         struct p54_tx_control_channel *chan;
 831         unsigned int i;
 832         void *entry;
 833
 834         hdr = kzalloc(sizeof(*hdr) + sizeof(*chan) +
 835                       priv->tx_hdr_len, GFP_KERNEL);
 836         if (!hdr)
 837                 return -ENOMEM;
 838
 839         hdr = (void *)hdr + priv->tx_hdr_len;
 840
 841         chan = (struct p54_tx_control_channel *) hdr->data;
 842
 843         hdr->magic1 = cpu_to_le16(0x8001);
 844         hdr->len = cpu_to_le16(sizeof(*chan));
 845         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_CHANNEL_CHANGE);
 846         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*chan));
 847
 848         chan->flags = cpu_to_le16(0x1);
 849         chan->dwell = cpu_to_le16(0x0);
 850
 851         for (i = 0; i < priv->iq_autocal_len; i++) {
 852                 if (priv->iq_autocal[i].freq != freq)
 853                         continue;
 854
 855                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
 856                        sizeof(*priv->iq_autocal));
 857                 break;
 858         }
 859         if (i == priv->iq_autocal_len)
 860                 goto err;
 861
 862         for (i = 0; i < priv->output_limit_len; i++) {
 863                 if (priv->output_limit[i].freq != freq)
 864                         continue;
 865
 866                 chan->val_barker = 0x38;
 867                 chan->val_bpsk = chan->dup_bpsk =
 868                         priv->output_limit[i].val_bpsk;
 869                 chan->val_qpsk = chan->dup_qpsk =
 870                         priv->output_limit[i].val_qpsk;
 871                 chan->val_16qam = chan->dup_16qam =
 872                         priv->output_limit[i].val_16qam;
 873                 chan->val_64qam = chan->dup_64qam =
 874                         priv->output_limit[i].val_64qam;
 875                 break;
 876         }
 877         if (i == priv->output_limit_len)
 878                 goto err;
 879
 880         entry = priv->curve_data->data;
 881         for (i = 0; i < priv->curve_data->channels; i++) {
 882                 if (*((__le16 *)entry) != freq) {
 883                         entry += sizeof(__le16);
 884                         entry += sizeof(struct p54_pa_curve_data_sample) *
 885                                  priv->curve_data->points_per_channel;
 886                         continue;
 887                 }
 888
 889                 entry += sizeof(__le16);
 890                 chan->pa_points_per_curve =
 891                         min(priv->curve_data->points_per_channel, (u8) 8);
 892
 893                 memcpy(chan->curve_data, entry, sizeof(*chan->curve_data) *
 894                        chan->pa_points_per_curve);
 895                 break;
 896         }
 897
 898         chan->rssical_mul = cpu_to_le16(130);
 899         chan->rssical_add = cpu_to_le16(0xfe70);        /* -400 */
 900
 901         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*chan), 1);
 902         return 0;
 903
 904  err:
 905         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
 906         kfree(hdr);
 907         return -EINVAL;
 908 }
 909
 910 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
 911 {
 912         struct p54_common *priv = dev->priv;
 913         struct p54_control_hdr *hdr;
 914         struct p54_tx_control_led *led;
 915
 916         hdr = kzalloc(sizeof(*hdr) + sizeof(*led) +
 917                       priv->tx_hdr_len, GFP_KERNEL);
 918         if (!hdr)
 919                 return -ENOMEM;
 920
 921         hdr = (void *)hdr + priv->tx_hdr_len;
 922         hdr->magic1 = cpu_to_le16(0x8001);
 923         hdr->len = cpu_to_le16(sizeof(*led));
 924         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_LED);
 925         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*led));
 926
 927         led = (struct p54_tx_control_led *) hdr->data;
 928         led->mode = cpu_to_le16(mode);
 929         led->led_permanent = cpu_to_le16(link);
 930         led->led_temporary = cpu_to_le16(act);
 931         led->duration = cpu_to_le16(1000);
 932
 933         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*led), 1);
 934
 935         return 0;
 936 }
 937
 938 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
 939 do {                                                            \
 940         queue.aifs = cpu_to_le16(ai_fs);                        \
 941         queue.cwmin = cpu_to_le16(cw_min);                      \
 942         queue.cwmax = cpu_to_le16(cw_max);                      \
 943         queue.txop = cpu_to_le16(_txop);                        \
 944 } while(0)
 945
 946 static void p54_init_vdcf(struct ieee80211_hw *dev)
 947 {
 948         struct p54_common *priv = dev->priv;
 949         struct p54_control_hdr *hdr;
 950         struct p54_tx_control_vdcf *vdcf;
 951
 952         /* all USB V1 adapters need a extra headroom */
 953         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
 954         hdr->magic1 = cpu_to_le16(0x8001);
 955         hdr->len = cpu_to_le16(sizeof(*vdcf));
 956         hdr->type = cpu_to_le16(P54_CONTROL_TYPE_DCFINIT);
 957         hdr->req_id = cpu_to_le32(priv->rx_start);
 958
 959         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
 960
 961         P54_SET_QUEUE(vdcf->queue[0], 0x0002, 0x0003, 0x0007, 47);
 962         P54_SET_QUEUE(vdcf->queue[1], 0x0002, 0x0007, 0x000f, 94);
 963         P54_SET_QUEUE(vdcf->queue[2], 0x0003, 0x000f, 0x03ff, 0);
 964         P54_SET_QUEUE(vdcf->queue[3], 0x0007, 0x000f, 0x03ff, 0);
 965 }
 966
 967 static void p54_set_vdcf(struct ieee80211_hw *dev)
 968 {
 969         struct p54_common *priv = dev->priv;
 970         struct p54_control_hdr *hdr;
 971         struct p54_tx_control_vdcf *vdcf;
 972
 973         hdr = (void *)priv->cached_vdcf + priv->tx_hdr_len;
 974
 975         p54_assign_address(dev, NULL, hdr, sizeof(*hdr) + sizeof(*vdcf));
 976
 977         vdcf = (struct p54_tx_control_vdcf *) hdr->data;
 978
 979         if (dev->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME) {
 980                 vdcf->slottime = 9;
 981                 vdcf->magic1 = 0x10;
 982                 vdcf->magic2 = 0x00;
 983         } else {
 984                 vdcf->slottime = 20;
 985                 vdcf->magic1 = 0x0a;
 986                 vdcf->magic2 = 0x06;
 987         }
 988
 989         /* (see prism54/isl_oid.h for further details) */
 990         vdcf->frameburst = cpu_to_le16(0);
 991
 992         priv->tx(dev, hdr, sizeof(*hdr) + sizeof(*vdcf), 0);
 993 }
 994
 995 static int p54_start(struct ieee80211_hw *dev)
 996 {
 997         struct p54_common *priv = dev->priv;
 998         int err;
 999
1000         if (!priv->cached_vdcf) {
1001                 priv->cached_vdcf = kzalloc(sizeof(struct p54_tx_control_vdcf)+
1002                         priv->tx_hdr_len + sizeof(struct p54_control_hdr),
1003                         GFP_KERNEL);
1004
1005                 if (!priv->cached_vdcf)
1006                         return -ENOMEM;
1007         }
1008
1009         err = priv->open(dev);
1010         if (!err)
1011                 priv->mode = IEEE80211_IF_TYPE_MNTR;
1012
1013         p54_init_vdcf(dev);
1014
1015         return err;
1016 }
1017
1018 static void p54_stop(struct ieee80211_hw *dev)
1019 {
1020         struct p54_common *priv = dev->priv;
1021         struct sk_buff *skb;
1022         while ((skb = skb_dequeue(&priv->tx_queue)))
1023                 kfree_skb(skb);
1024         priv->stop(dev);
1025         priv->mode = IEEE80211_IF_TYPE_INVALID;
1026 }
1027
1028 static int p54_add_interface(struct ieee80211_hw *dev,
1029                              struct ieee80211_if_init_conf *conf)
1030 {
1031         struct p54_common *priv = dev->priv;
1032
1033         if (priv->mode != IEEE80211_IF_TYPE_MNTR)
1034                 return -EOPNOTSUPP;
1035
1036         switch (conf->type) {
1037         case IEEE80211_IF_TYPE_STA:
1038                 priv->mode = conf->type;
1039                 break;
1040         default:
1041                 return -EOPNOTSUPP;
1042         }
1043
1044         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1045
1046         p54_set_filter(dev, 0, priv->mac_addr, NULL, 0, 1, 0, 0xF642);
1047         p54_set_filter(dev, 0, priv->mac_addr, NULL, 1, 0, 0, 0xF642);
1048
1049         switch (conf->type) {
1050         case IEEE80211_IF_TYPE_STA:
1051                 p54_set_filter(dev, 1, priv->mac_addr, NULL, 0, 0x15F, 0x1F4, 0);
1052                 break;
1053         default:
1054                 BUG();  /* impossible */
1055                 break;
1056         }
1057
1058         p54_set_leds(dev, 1, 0, 0);
1059
1060         return 0;
1061 }
1062
1063 static void p54_remove_interface(struct ieee80211_hw *dev,
1064                                  struct ieee80211_if_init_conf *conf)
1065 {
1066         struct p54_common *priv = dev->priv;
1067         priv->mode = IEEE80211_IF_TYPE_MNTR;
1068         memset(priv->mac_addr, 0, ETH_ALEN);
1069         p54_set_filter(dev, 0, priv->mac_addr, NULL, 2, 0, 0, 0);
1070 }
1071
1072 static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
1073 {
1074         int ret;
1075         struct p54_common *priv = dev->priv;
1076
1077         mutex_lock(&priv->conf_mutex);
1078         ret = p54_set_freq(dev, cpu_to_le16(conf->channel->center_freq));
1079         p54_set_vdcf(dev);
1080         mutex_unlock(&priv->conf_mutex);
1081         return ret;
1082 }
1083
1084 static int p54_config_interface(struct ieee80211_hw *dev,
1085                                 struct ieee80211_vif *vif,
1086                                 struct ieee80211_if_conf *conf)
1087 {
1088         struct p54_common *priv = dev->priv;
1089
1090         mutex_lock(&priv->conf_mutex);
1091         p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 0, 1, 0, 0xF642);
1092         p54_set_filter(dev, 0, priv->mac_addr, conf->bssid, 2, 0, 0, 0);
1093         p54_set_leds(dev, 1, !is_multicast_ether_addr(conf->bssid), 0);
1094         memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1095         mutex_unlock(&priv->conf_mutex);
1096         return 0;
1097 }
1098
1099 static void p54_configure_filter(struct ieee80211_hw *dev,
1100                                  unsigned int changed_flags,
1101                                  unsigned int *total_flags,
1102                                  int mc_count, struct dev_mc_list *mclist)
1103 {
1104         struct p54_common *priv = dev->priv;
1105
1106         *total_flags &= FIF_BCN_PRBRESP_PROMISC;
1107
1108         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
1109                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
1110                         p54_set_filter(dev, 0, priv->mac_addr,
1111                                        NULL, 2, 0, 0, 0);
1112                 else
1113                         p54_set_filter(dev, 0, priv->mac_addr,
1114                                        priv->bssid, 2, 0, 0, 0);
1115         }
1116 }
1117
1118 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
1119                        const struct ieee80211_tx_queue_params *params)
1120 {
1121         struct p54_common *priv = dev->priv;
1122         struct p54_tx_control_vdcf *vdcf;
1123
1124         vdcf = (struct p54_tx_control_vdcf *)(((struct p54_control_hdr *)
1125                 ((void *)priv->cached_vdcf + priv->tx_hdr_len))->data);
1126
1127         if ((params) && !(queue > 4)) {
1128                 P54_SET_QUEUE(vdcf->queue[queue], params->aifs,
1129                         params->cw_min, params->cw_max, params->txop);
1130         } else
1131                 return -EINVAL;
1132
1133         p54_set_vdcf(dev);
1134
1135         return 0;
1136 }
1137
1138 static int p54_get_stats(struct ieee80211_hw *dev,
1139                          struct ieee80211_low_level_stats *stats)
1140 {
1141         /* TODO */
1142         return 0;
1143 }
1144
1145 static int p54_get_tx_stats(struct ieee80211_hw *dev,
1146                             struct ieee80211_tx_queue_stats *stats)
1147 {
1148         struct p54_common *priv = dev->priv;
1149
1150         memcpy(stats, &priv->tx_stats[4], sizeof(stats[0]) * dev->queues);
1151
1152         return 0;
1153 }
1154
1155 static const struct ieee80211_ops p54_ops = {
1156         .tx                     = p54_tx,
1157         .start                  = p54_start,
1158         .stop                   = p54_stop,
1159         .add_interface          = p54_add_interface,
1160         .remove_interface       = p54_remove_interface,
1161         .config                 = p54_config,
1162         .config_interface       = p54_config_interface,
1163         .configure_filter       = p54_configure_filter,
1164         .conf_tx                = p54_conf_tx,
1165         .get_stats              = p54_get_stats,
1166         .get_tx_stats           = p54_get_tx_stats
1167 };
1168
1169 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
1170 {
1171         struct ieee80211_hw *dev;
1172         struct p54_common *priv;
1173
1174         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
1175         if (!dev)
1176                 return NULL;
1177
1178         priv = dev->priv;
1179         priv->mode = IEEE80211_IF_TYPE_INVALID;
1180         skb_queue_head_init(&priv->tx_queue);
1181         dev->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | /* not sure */
1182                      IEEE80211_HW_RX_INCLUDES_FCS |
1183                      IEEE80211_HW_SIGNAL_UNSPEC;
1184
1185         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1186
1187         dev->channel_change_time = 1000;        /* TODO: find actual value */
1188         dev->max_signal = 127;
1189
1190         priv->tx_stats[0].limit = 1;
1191         priv->tx_stats[1].limit = 1;
1192         priv->tx_stats[2].limit = 1;
1193         priv->tx_stats[3].limit = 1;
1194         priv->tx_stats[4].limit = 5;
1195         dev->queues = 1;
1196         dev->extra_tx_headroom = sizeof(struct p54_control_hdr) + 4 +
1197                                  sizeof(struct p54_tx_control_allocdata);
1198
1199         mutex_init(&priv->conf_mutex);
1200         init_completion(&priv->eeprom_comp);
1201
1202         return dev;
1203 }
1204 EXPORT_SYMBOL_GPL(p54_init_common);
1205
1206 void p54_free_common(struct ieee80211_hw *dev)
1207 {
1208         struct p54_common *priv = dev->priv;
1209         kfree(priv->iq_autocal);
1210         kfree(priv->output_limit);
1211         kfree(priv->curve_data);
1212         kfree(priv->cached_vdcf);
1213 }
1214 EXPORT_SYMBOL_GPL(p54_free_common);
1215
1216 static int __init p54_init(void)
1217 {
1218         return 0;
1219 }
1220
1221 static void __exit p54_exit(void)
1222 {
1223 }
1224
1225 module_init(p54_init);
1226 module_exit(p54_exit);