drivers/net/wireless/p54/fwio.c

   1 /*
   2  * Firmware I/O code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007-2009, 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/slab.h>
  21 #include <linux/firmware.h>
  22 #include <linux/etherdevice.h>
  23
  24 #include <net/mac80211.h>
  25
  26 #include "p54.h"
  27 #include "eeprom.h"
  28 #include "lmac.h"
  29
  30 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  31 {
  32         struct p54_common *priv = dev->priv;
  33         struct exp_if *exp_if;
  34         struct bootrec *bootrec;
  35         u32 *data = (u32 *)fw->data;
  36         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  37         u8 *fw_version = NULL;
  38         size_t len;
  39         int i;
  40         int maxlen;
  41
  42         if (priv->rx_start)
  43                 return 0;
  44
  45         while (data < end_data && *data)
  46                 data++;
  47
  48         while (data < end_data && !*data)
  49                 data++;
  50
  51         bootrec = (struct bootrec *) data;
  52
  53         while (bootrec->data <= end_data && (bootrec->data +
  54                (len = le32_to_cpu(bootrec->len))) <= end_data) {
  55                 u32 code = le32_to_cpu(bootrec->code);
  56                 switch (code) {
  57                 case BR_CODE_COMPONENT_ID:
  58                         priv->fw_interface = be32_to_cpup((__be32 *)
  59                                              bootrec->data);
  60                         switch (priv->fw_interface) {
  61                         case FW_LM86:
  62                         case FW_LM20:
  63                         case FW_LM87: {
  64                                 char *iftype = (char *)bootrec->data;
  65                                 wiphy_info(priv->hw->wiphy,
  66                                            "p54 detected a LM%c%c firmware\n",
  67                                            iftype[2], iftype[3]);
  68                                 break;
  69                                 }
  70                         case FW_FMAC:
  71                         default:
  72                                 wiphy_err(priv->hw->wiphy,
  73                                           "unsupported firmware\n");
  74                                 return -ENODEV;
  75                         }
  76                         break;
  77                 case BR_CODE_COMPONENT_VERSION:
  78                         /* 24 bytes should be enough for all firmwares */
  79                         if (strnlen((unsigned char *) bootrec->data, 24) < 24)
  80                                 fw_version = (unsigned char *) bootrec->data;
  81                         break;
  82                 case BR_CODE_DESCR: {
  83                         struct bootrec_desc *desc =
  84                                 (struct bootrec_desc *)bootrec->data;
  85                         priv->rx_start = le32_to_cpu(desc->rx_start);
  86                         /* FIXME add sanity checking */
  87                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
  88                         priv->headroom = desc->headroom;
  89                         priv->tailroom = desc->tailroom;
  90                         priv->privacy_caps = desc->privacy_caps;
  91                         priv->rx_keycache_size = desc->rx_keycache_size;
  92                         if (le32_to_cpu(bootrec->len) == 11)
  93                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
  94                         else
  95                                 priv->rx_mtu = (size_t)
  96                                         0x620 - priv->tx_hdr_len;
  97                         maxlen = priv->tx_hdr_len + /* USB devices */
  98                                  sizeof(struct p54_rx_data) +
  99                                  4 + /* rx alignment */
 100                                  IEEE80211_MAX_FRAG_THRESHOLD;
 101                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 102                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 103                                        "to %d\n", priv->rx_mtu, maxlen);
 104                                 priv->rx_mtu = maxlen;
 105                         }
 106                         break;
 107                         }
 108                 case BR_CODE_EXPOSED_IF:
 109                         exp_if = (struct exp_if *) bootrec->data;
 110                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 111                                 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
 112                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 113                         break;
 114                 case BR_CODE_DEPENDENT_IF:
 115                         break;
 116                 case BR_CODE_END_OF_BRA:
 117                 case LEGACY_BR_CODE_END_OF_BRA:
 118                         end_data = NULL;
 119                         break;
 120                 default:
 121                         break;
 122                 }
 123                 bootrec = (struct bootrec *)&bootrec->data[len];
 124         }
 125
 126         if (fw_version) {
 127                 wiphy_info(priv->hw->wiphy,
 128                            "FW rev %s - Softmac protocol %x.%x\n",
 129                            fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
 130                 snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
 131                                 "%s - %x.%x", fw_version,
 132                                 priv->fw_var >> 8, priv->fw_var & 0xff);
 133         }
 134
 135         if (priv->fw_var < 0x500)
 136                 wiphy_info(priv->hw->wiphy,
 137                            "you are using an obsolete firmware. "
 138                            "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 139                            "and grab one for \"kernel >= 2.6.28\"!\n");
 140
 141         if (priv->fw_var >= 0x300) {
 142                 /* Firmware supports QoS, use it! */
 143
 144                 if (priv->fw_var >= 0x500) {
 145                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
 146                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
 147                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
 148                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
 149                 } else {
 150                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 151                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 152                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 153                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 154                 }
 155                 priv->hw->queues = P54_QUEUE_AC_NUM;
 156         }
 157
 158         wiphy_info(priv->hw->wiphy,
 159                    "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
 160                    (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
 161                    (priv->privacy_caps &
 162                     (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
 163                    ? "YES" : "no",
 164                    (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
 165                    ? "YES" : "no");
 166
 167         if (priv->rx_keycache_size) {
 168                 /*
 169                  * NOTE:
 170                  *
 171                  * The firmware provides at most 255 (0 - 254) slots
 172                  * for keys which are then used to offload decryption.
 173                  * As a result the 255 entry (aka 0xff) can be used
 174                  * safely by the driver to mark keys that didn't fit
 175                  * into the full cache. This trick saves us from
 176                  * keeping a extra list for uploaded keys.
 177                  */
 178
 179                 priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
 180                         priv->rx_keycache_size), GFP_KERNEL);
 181
 182                 if (!priv->used_rxkeys)
 183                         return -ENOMEM;
 184         }
 185
 186         return 0;
 187 }
 188 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 189
 190 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
 191                                      u16 payload_len, u16 type, gfp_t memflags)
 192 {
 193         struct p54_hdr *hdr;
 194         struct sk_buff *skb;
 195         size_t frame_len = sizeof(*hdr) + payload_len;
 196
 197         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
 198                 return NULL;
 199
 200         if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
 201                 return NULL;
 202
 203         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
 204         if (!skb)
 205                 return NULL;
 206         skb_reserve(skb, priv->tx_hdr_len);
 207
 208         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
 209         hdr->flags = cpu_to_le16(hdr_flags);
 210         hdr->len = cpu_to_le16(payload_len);
 211         hdr->type = cpu_to_le16(type);
 212         hdr->tries = hdr->rts_tries = 0;
 213         return skb;
 214 }
 215
 216 int p54_download_eeprom(struct p54_common *priv, void *buf,
 217                         u16 offset, u16 len)
 218 {
 219         struct p54_eeprom_lm86 *eeprom_hdr;
 220         struct sk_buff *skb;
 221         size_t eeprom_hdr_size;
 222         int ret = 0;
 223
 224         if (priv->fw_var >= 0x509)
 225                 eeprom_hdr_size = sizeof(*eeprom_hdr);
 226         else
 227                 eeprom_hdr_size = 0x4;
 228
 229         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
 230                             len, P54_CONTROL_TYPE_EEPROM_READBACK,
 231                             GFP_KERNEL);
 232         if (unlikely(!skb))
 233                 return -ENOMEM;
 234
 235         mutex_lock(&priv->eeprom_mutex);
 236         priv->eeprom = buf;
 237         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
 238                 eeprom_hdr_size + len);
 239
 240         if (priv->fw_var < 0x509) {
 241                 eeprom_hdr->v1.offset = cpu_to_le16(offset);
 242                 eeprom_hdr->v1.len = cpu_to_le16(len);
 243         } else {
 244                 eeprom_hdr->v2.offset = cpu_to_le32(offset);
 245                 eeprom_hdr->v2.len = cpu_to_le16(len);
 246                 eeprom_hdr->v2.magic2 = 0xf;
 247                 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
 248         }
 249
 250         p54_tx(priv, skb);
 251
 252         if (!wait_for_completion_interruptible_timeout(
 253              &priv->eeprom_comp, HZ)) {
 254                 wiphy_err(priv->hw->wiphy, "device does not respond!\n");
 255                 ret = -EBUSY;
 256         }
 257         priv->eeprom = NULL;
 258         mutex_unlock(&priv->eeprom_mutex);
 259         return ret;
 260 }
 261
 262 int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
 263 {
 264         struct sk_buff *skb;
 265         struct p54_tim *tim;
 266
 267         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
 268                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
 269         if (unlikely(!skb))
 270                 return -ENOMEM;
 271
 272         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
 273         tim->count = 1;
 274         tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
 275         p54_tx(priv, skb);
 276         return 0;
 277 }
 278
 279 int p54_sta_unlock(struct p54_common *priv, u8 *addr)
 280 {
 281         struct sk_buff *skb;
 282         struct p54_sta_unlock *sta;
 283
 284         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
 285                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
 286         if (unlikely(!skb))
 287                 return -ENOMEM;
 288
 289         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
 290         memcpy(sta->addr, addr, ETH_ALEN);
 291         p54_tx(priv, skb);
 292         return 0;
 293 }
 294
 295 int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
 296 {
 297         struct sk_buff *skb;
 298         struct p54_txcancel *cancel;
 299         u32 _req_id = le32_to_cpu(req_id);
 300
 301         if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
 302                 return -EINVAL;
 303
 304         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
 305                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
 306         if (unlikely(!skb))
 307                 return -ENOMEM;
 308
 309         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
 310         cancel->req_id = req_id;
 311         p54_tx(priv, skb);
 312         return 0;
 313 }
 314
 315 int p54_setup_mac(struct p54_common *priv)
 316 {
 317         struct sk_buff *skb;
 318         struct p54_setup_mac *setup;
 319         u16 mode;
 320
 321         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
 322                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
 323         if (!skb)
 324                 return -ENOMEM;
 325
 326         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
 327         if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
 328                 switch (priv->mode) {
 329                 case NL80211_IFTYPE_STATION:
 330                         mode = P54_FILTER_TYPE_STATION;
 331                         break;
 332                 case NL80211_IFTYPE_AP:
 333                         mode = P54_FILTER_TYPE_AP;
 334                         break;
 335                 case NL80211_IFTYPE_ADHOC:
 336                 case NL80211_IFTYPE_MESH_POINT:
 337                         mode = P54_FILTER_TYPE_IBSS;
 338                         break;
 339                 case NL80211_IFTYPE_MONITOR:
 340                         mode = P54_FILTER_TYPE_PROMISCUOUS;
 341                         break;
 342                 default:
 343                         mode = P54_FILTER_TYPE_HIBERNATE;
 344                         break;
 345                 }
 346
 347                 /*
 348                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
 349                  * STSW45X0C LMAC API - page 12
 350                  */
 351                 if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
 352                      (priv->filter_flags & FIF_OTHER_BSS)) &&
 353                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
 354                         mode |= P54_FILTER_TYPE_TRANSPARENT;
 355         } else {
 356                 mode = P54_FILTER_TYPE_HIBERNATE;
 357         }
 358
 359         setup->mac_mode = cpu_to_le16(mode);
 360         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 361         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 362         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 363         setup->rx_align = 0;
 364         if (priv->fw_var < 0x500) {
 365                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 366                 memset(setup->v1.rts_rates, 0, 8);
 367                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 368                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 369                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 370                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 371                 setup->v1.unalloc0 = cpu_to_le16(0);
 372         } else {
 373                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 374                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 375                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 376                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 377                 setup->v2.truncate = cpu_to_le16(48896);
 378                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 379                 setup->v2.sbss_offset = 0;
 380                 setup->v2.mcast_window = 0;
 381                 setup->v2.rx_rssi_threshold = 0;
 382                 setup->v2.rx_ed_threshold = 0;
 383                 setup->v2.ref_clock = cpu_to_le32(644245094);
 384                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 385                 setup->v2.osc_start_delay = cpu_to_le16(65535);
 386         }
 387         p54_tx(priv, skb);
 388         return 0;
 389 }
 390
 391 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 392 {
 393         struct sk_buff *skb;
 394         struct p54_hdr *hdr;
 395         struct p54_scan_head *head;
 396         struct p54_iq_autocal_entry *iq_autocal;
 397         union p54_scan_body_union *body;
 398         struct p54_scan_tail_rate *rate;
 399         struct pda_rssi_cal_entry *rssi;
 400         unsigned int i;
 401         void *entry;
 402         int band = priv->hw->conf.channel->band;
 403         __le16 freq = cpu_to_le16(priv->hw->conf.channel->center_freq);
 404
 405         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 406                             2 + sizeof(*iq_autocal) + sizeof(*body) +
 407                             sizeof(*rate) + 2 * sizeof(*rssi),
 408                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 409         if (!skb)
 410                 return -ENOMEM;
 411
 412         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 413         memset(head->scan_params, 0, sizeof(head->scan_params));
 414         head->mode = cpu_to_le16(mode);
 415         head->dwell = cpu_to_le16(dwell);
 416         head->freq = freq;
 417
 418         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 419                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 420                 *pa_power_points = cpu_to_le16(0x0c);
 421         }
 422
 423         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 424         for (i = 0; i < priv->iq_autocal_len; i++) {
 425                 if (priv->iq_autocal[i].freq != freq)
 426                         continue;
 427
 428                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
 429                        sizeof(struct p54_iq_autocal_entry));
 430                 break;
 431         }
 432         if (i == priv->iq_autocal_len)
 433                 goto err;
 434
 435         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 436                 body = (void *) skb_put(skb, sizeof(body->longbow));
 437         else
 438                 body = (void *) skb_put(skb, sizeof(body->normal));
 439
 440         for (i = 0; i < priv->output_limit->entries; i++) {
 441                 __le16 *entry_freq = (void *) (priv->output_limit->data +
 442                                      priv->output_limit->entry_size * i);
 443
 444                 if (*entry_freq != freq)
 445                         continue;
 446
 447                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 448                         memcpy(&body->longbow.power_limits,
 449                                (void *) entry_freq + sizeof(__le16),
 450                                priv->output_limit->entry_size);
 451                 } else {
 452                         struct pda_channel_output_limit *limits =
 453                                (void *) entry_freq;
 454
 455                         body->normal.val_barker = 0x38;
 456                         body->normal.val_bpsk = body->normal.dup_bpsk =
 457                                 limits->val_bpsk;
 458                         body->normal.val_qpsk = body->normal.dup_qpsk =
 459                                 limits->val_qpsk;
 460                         body->normal.val_16qam = body->normal.dup_16qam =
 461                                 limits->val_16qam;
 462                         body->normal.val_64qam = body->normal.dup_64qam =
 463                                 limits->val_64qam;
 464                 }
 465                 break;
 466         }
 467         if (i == priv->output_limit->entries)
 468                 goto err;
 469
 470         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 471         for (i = 0; i < priv->curve_data->entries; i++) {
 472                 if (*((__le16 *)entry) != freq) {
 473                         entry += priv->curve_data->entry_size;
 474                         continue;
 475                 }
 476
 477                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 478                         memcpy(&body->longbow.curve_data,
 479                                 (void *) entry + sizeof(__le16),
 480                                 priv->curve_data->entry_size);
 481                 } else {
 482                         struct p54_scan_body *chan = &body->normal;
 483                         struct pda_pa_curve_data *curve_data =
 484                                 (void *) priv->curve_data->data;
 485
 486                         entry += sizeof(__le16);
 487                         chan->pa_points_per_curve = 8;
 488                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 489                         memcpy(chan->curve_data, entry,
 490                                sizeof(struct p54_pa_curve_data_sample) *
 491                                min((u8)8, curve_data->points_per_channel));
 492                 }
 493                 break;
 494         }
 495         if (i == priv->curve_data->entries)
 496                 goto err;
 497
 498         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 499                 rate = (void *) skb_put(skb, sizeof(*rate));
 500                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 501                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 502                         rate->rts_rates[i] = i;
 503         }
 504
 505         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 506         rssi->mul = cpu_to_le16(priv->rssical_db[band].mul);
 507         rssi->add = cpu_to_le16(priv->rssical_db[band].add);
 508         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 509                 /* Longbow frontend needs ever more */
 510                 rssi = (void *) skb_put(skb, sizeof(*rssi));
 511                 rssi->mul = cpu_to_le16(priv->rssical_db[band].longbow_unkn);
 512                 rssi->add = cpu_to_le16(priv->rssical_db[band].longbow_unk2);
 513         }
 514
 515         if (priv->fw_var >= 0x509) {
 516                 rate = (void *) skb_put(skb, sizeof(*rate));
 517                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 518                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 519                         rate->rts_rates[i] = i;
 520         }
 521
 522         hdr = (struct p54_hdr *) skb->data;
 523         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 524
 525         p54_tx(priv, skb);
 526         return 0;
 527
 528 err:
 529         wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 530                   ieee80211_frequency_to_channel(
 531                           priv->hw->conf.channel->center_freq));
 532
 533         dev_kfree_skb_any(skb);
 534         return -EINVAL;
 535 }
 536
 537 int p54_set_leds(struct p54_common *priv)
 538 {
 539         struct sk_buff *skb;
 540         struct p54_led *led;
 541
 542         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 543                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 544         if (unlikely(!skb))
 545                 return -ENOMEM;
 546
 547         led = (struct p54_led *) skb_put(skb, sizeof(*led));
 548         led->flags = cpu_to_le16(0x0003);
 549         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 550         led->delay[0] = cpu_to_le16(1);
 551         led->delay[1] = cpu_to_le16(0);
 552         p54_tx(priv, skb);
 553         return 0;
 554 }
 555
 556 int p54_set_edcf(struct p54_common *priv)
 557 {
 558         struct sk_buff *skb;
 559         struct p54_edcf *edcf;
 560
 561         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 562                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 563         if (unlikely(!skb))
 564                 return -ENOMEM;
 565
 566         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 567         if (priv->use_short_slot) {
 568                 edcf->slottime = 9;
 569                 edcf->sifs = 0x10;
 570                 edcf->eofpad = 0x00;
 571         } else {
 572                 edcf->slottime = 20;
 573                 edcf->sifs = 0x0a;
 574                 edcf->eofpad = 0x06;
 575         }
 576         /* (see prism54/isl_oid.h for further details) */
 577         edcf->frameburst = cpu_to_le16(0);
 578         edcf->round_trip_delay = cpu_to_le16(0);
 579         edcf->flags = 0;
 580         memset(edcf->mapping, 0, sizeof(edcf->mapping));
 581         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 582         p54_tx(priv, skb);
 583         return 0;
 584 }
 585
 586 int p54_set_ps(struct p54_common *priv)
 587 {
 588         struct sk_buff *skb;
 589         struct p54_psm *psm;
 590         unsigned int i;
 591         u16 mode;
 592
 593         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 594             !priv->powersave_override)
 595                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 596                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
 597         else
 598                 mode = P54_PSM_CAM;
 599
 600         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 601                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 602         if (!skb)
 603                 return -ENOMEM;
 604
 605         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 606         psm->mode = cpu_to_le16(mode);
 607         psm->aid = cpu_to_le16(priv->aid);
 608         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 609                 psm->intervals[i].interval =
 610                         cpu_to_le16(priv->hw->conf.listen_interval);
 611                 psm->intervals[i].periods = cpu_to_le16(1);
 612         }
 613
 614         psm->beacon_rssi_skip_max = 200;
 615         psm->rssi_delta_threshold = 0;
 616         psm->nr = 1;
 617         psm->exclude[0] = WLAN_EID_TIM;
 618
 619         p54_tx(priv, skb);
 620         return 0;
 621 }
 622
 623 int p54_init_xbow_synth(struct p54_common *priv)
 624 {
 625         struct sk_buff *skb;
 626         struct p54_xbow_synth *xbow;
 627
 628         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 629                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 630         if (unlikely(!skb))
 631                 return -ENOMEM;
 632
 633         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 634         xbow->magic1 = cpu_to_le16(0x1);
 635         xbow->magic2 = cpu_to_le16(0x2);
 636         xbow->freq = cpu_to_le16(5390);
 637         memset(xbow->padding, 0, sizeof(xbow->padding));
 638         p54_tx(priv, skb);
 639         return 0;
 640 }
 641
 642 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 643                    u8 *addr, u8* key)
 644 {
 645         struct sk_buff *skb;
 646         struct p54_keycache *rxkey;
 647
 648         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 649                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 650         if (unlikely(!skb))
 651                 return -ENOMEM;
 652
 653         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 654         rxkey->entry = slot;
 655         rxkey->key_id = idx;
 656         rxkey->key_type = algo;
 657         if (addr)
 658                 memcpy(rxkey->mac, addr, ETH_ALEN);
 659         else
 660                 memset(rxkey->mac, ~0, ETH_ALEN);
 661
 662         switch (algo) {
 663         case P54_CRYPTO_WEP:
 664         case P54_CRYPTO_AESCCMP:
 665                 rxkey->key_len = min_t(u8, 16, len);
 666                 memcpy(rxkey->key, key, rxkey->key_len);
 667                 break;
 668
 669         case P54_CRYPTO_TKIPMICHAEL:
 670                 rxkey->key_len = 24;
 671                 memcpy(rxkey->key, key, 16);
 672                 memcpy(&(rxkey->key[16]), &(key
 673                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 674                 break;
 675
 676         case P54_CRYPTO_NONE:
 677                 rxkey->key_len = 0;
 678                 memset(rxkey->key, 0, sizeof(rxkey->key));
 679                 break;
 680
 681         default:
 682                 wiphy_err(priv->hw->wiphy,
 683                           "invalid cryptographic algorithm: %d\n", algo);
 684                 dev_kfree_skb(skb);
 685                 return -EINVAL;
 686         }
 687
 688         p54_tx(priv, skb);
 689         return 0;
 690 }
 691
 692 int p54_fetch_statistics(struct p54_common *priv)
 693 {
 694         struct ieee80211_tx_info *txinfo;
 695         struct p54_tx_info *p54info;
 696         struct sk_buff *skb;
 697
 698         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 699                             sizeof(struct p54_statistics),
 700                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 701         if (!skb)
 702                 return -ENOMEM;
 703
 704         /*
 705          * The statistic feedback causes some extra headaches here, if it
 706          * is not to crash/corrupt the firmware data structures.
 707          *
 708          * Unlike all other Control Get OIDs we can not use helpers like
 709          * skb_put to reserve the space for the data we're requesting.
 710          * Instead the extra frame length -which will hold the results later-
 711          * will only be told to the p54_assign_address, so that following
 712          * frames won't be placed into the  allegedly empty area.
 713          */
 714         txinfo = IEEE80211_SKB_CB(skb);
 715         p54info = (void *) txinfo->rate_driver_data;
 716         p54info->extra_len = sizeof(struct p54_statistics);
 717
 718         p54_tx(priv, skb);
 719         return 0;
 720 }