drivers/net/wireless/intersil/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/slab.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/export.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         long timeout;
 224
 225         if (priv->fw_var >= 0x509)
 226                 eeprom_hdr_size = sizeof(*eeprom_hdr);
 227         else
 228                 eeprom_hdr_size = 0x4;
 229
 230         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
 231                             len, P54_CONTROL_TYPE_EEPROM_READBACK,
 232                             GFP_KERNEL);
 233         if (unlikely(!skb))
 234                 return -ENOMEM;
 235
 236         mutex_lock(&priv->eeprom_mutex);
 237         priv->eeprom = buf;
 238         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
 239                 eeprom_hdr_size + len);
 240
 241         if (priv->fw_var < 0x509) {
 242                 eeprom_hdr->v1.offset = cpu_to_le16(offset);
 243                 eeprom_hdr->v1.len = cpu_to_le16(len);
 244         } else {
 245                 eeprom_hdr->v2.offset = cpu_to_le32(offset);
 246                 eeprom_hdr->v2.len = cpu_to_le16(len);
 247                 eeprom_hdr->v2.magic2 = 0xf;
 248                 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
 249         }
 250
 251         p54_tx(priv, skb);
 252
 253         timeout = wait_for_completion_interruptible_timeout(
 254                         &priv->eeprom_comp, HZ);
 255         if (timeout <= 0) {
 256                 wiphy_err(priv->hw->wiphy,
 257                         "device does not respond or signal received!\n");
 258                 ret = -EBUSY;
 259         }
 260         priv->eeprom = NULL;
 261         mutex_unlock(&priv->eeprom_mutex);
 262         return ret;
 263 }
 264
 265 int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
 266 {
 267         struct sk_buff *skb;
 268         struct p54_tim *tim;
 269
 270         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
 271                             P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
 272         if (unlikely(!skb))
 273                 return -ENOMEM;
 274
 275         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
 276         tim->count = 1;
 277         tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
 278         p54_tx(priv, skb);
 279         return 0;
 280 }
 281
 282 int p54_sta_unlock(struct p54_common *priv, u8 *addr)
 283 {
 284         struct sk_buff *skb;
 285         struct p54_sta_unlock *sta;
 286
 287         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
 288                             P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
 289         if (unlikely(!skb))
 290                 return -ENOMEM;
 291
 292         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
 293         memcpy(sta->addr, addr, ETH_ALEN);
 294         p54_tx(priv, skb);
 295         return 0;
 296 }
 297
 298 int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
 299 {
 300         struct sk_buff *skb;
 301         struct p54_txcancel *cancel;
 302         u32 _req_id = le32_to_cpu(req_id);
 303
 304         if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
 305                 return -EINVAL;
 306
 307         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
 308                             P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
 309         if (unlikely(!skb))
 310                 return -ENOMEM;
 311
 312         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
 313         cancel->req_id = req_id;
 314         p54_tx(priv, skb);
 315         return 0;
 316 }
 317
 318 int p54_setup_mac(struct p54_common *priv)
 319 {
 320         struct sk_buff *skb;
 321         struct p54_setup_mac *setup;
 322         u16 mode;
 323
 324         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
 325                             P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
 326         if (!skb)
 327                 return -ENOMEM;
 328
 329         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
 330         if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
 331                 switch (priv->mode) {
 332                 case NL80211_IFTYPE_STATION:
 333                         mode = P54_FILTER_TYPE_STATION;
 334                         break;
 335                 case NL80211_IFTYPE_AP:
 336                         mode = P54_FILTER_TYPE_AP;
 337                         break;
 338                 case NL80211_IFTYPE_ADHOC:
 339                 case NL80211_IFTYPE_MESH_POINT:
 340                         mode = P54_FILTER_TYPE_IBSS;
 341                         break;
 342                 case NL80211_IFTYPE_MONITOR:
 343                         mode = P54_FILTER_TYPE_PROMISCUOUS;
 344                         break;
 345                 default:
 346                         mode = P54_FILTER_TYPE_HIBERNATE;
 347                         break;
 348                 }
 349
 350                 /*
 351                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
 352                  * STSW45X0C LMAC API - page 12
 353                  */
 354                 if (priv->filter_flags & FIF_OTHER_BSS &&
 355                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
 356                         mode |= P54_FILTER_TYPE_TRANSPARENT;
 357         } else {
 358                 mode = P54_FILTER_TYPE_HIBERNATE;
 359         }
 360
 361         setup->mac_mode = cpu_to_le16(mode);
 362         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 363         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 364         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 365         setup->rx_align = 0;
 366         if (priv->fw_var < 0x500) {
 367                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 368                 memset(setup->v1.rts_rates, 0, 8);
 369                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 370                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 371                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 372                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 373                 setup->v1.unalloc0 = cpu_to_le16(0);
 374         } else {
 375                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 376                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 377                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 378                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 379                 setup->v2.truncate = cpu_to_le16(48896);
 380                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 381                 setup->v2.sbss_offset = 0;
 382                 setup->v2.mcast_window = 0;
 383                 setup->v2.rx_rssi_threshold = 0;
 384                 setup->v2.rx_ed_threshold = 0;
 385                 setup->v2.ref_clock = cpu_to_le32(644245094);
 386                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 387                 setup->v2.osc_start_delay = cpu_to_le16(65535);
 388         }
 389         p54_tx(priv, skb);
 390         priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
 391         return 0;
 392 }
 393
 394 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 395 {
 396         struct sk_buff *skb;
 397         struct p54_hdr *hdr;
 398         struct p54_scan_head *head;
 399         struct p54_iq_autocal_entry *iq_autocal;
 400         union p54_scan_body_union *body;
 401         struct p54_scan_tail_rate *rate;
 402         struct pda_rssi_cal_entry *rssi;
 403         struct p54_rssi_db_entry *rssi_data;
 404         unsigned int i;
 405         void *entry;
 406         __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
 407
 408         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 409                             2 + sizeof(*iq_autocal) + sizeof(*body) +
 410                             sizeof(*rate) + 2 * sizeof(*rssi),
 411                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 412         if (!skb)
 413                 return -ENOMEM;
 414
 415         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 416         memset(head->scan_params, 0, sizeof(head->scan_params));
 417         head->mode = cpu_to_le16(mode);
 418         head->dwell = cpu_to_le16(dwell);
 419         head->freq = freq;
 420
 421         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 422                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 423                 *pa_power_points = cpu_to_le16(0x0c);
 424         }
 425
 426         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 427         for (i = 0; i < priv->iq_autocal_len; i++) {
 428                 if (priv->iq_autocal[i].freq != freq)
 429                         continue;
 430
 431                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
 432                        sizeof(struct p54_iq_autocal_entry));
 433                 break;
 434         }
 435         if (i == priv->iq_autocal_len)
 436                 goto err;
 437
 438         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 439                 body = (void *) skb_put(skb, sizeof(body->longbow));
 440         else
 441                 body = (void *) skb_put(skb, sizeof(body->normal));
 442
 443         for (i = 0; i < priv->output_limit->entries; i++) {
 444                 __le16 *entry_freq = (void *) (priv->output_limit->data +
 445                                      priv->output_limit->entry_size * i);
 446
 447                 if (*entry_freq != freq)
 448                         continue;
 449
 450                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 451                         memcpy(&body->longbow.power_limits,
 452                                (void *) entry_freq + sizeof(__le16),
 453                                priv->output_limit->entry_size);
 454                 } else {
 455                         struct pda_channel_output_limit *limits =
 456                                (void *) entry_freq;
 457
 458                         body->normal.val_barker = 0x38;
 459                         body->normal.val_bpsk = body->normal.dup_bpsk =
 460                                 limits->val_bpsk;
 461                         body->normal.val_qpsk = body->normal.dup_qpsk =
 462                                 limits->val_qpsk;
 463                         body->normal.val_16qam = body->normal.dup_16qam =
 464                                 limits->val_16qam;
 465                         body->normal.val_64qam = body->normal.dup_64qam =
 466                                 limits->val_64qam;
 467                 }
 468                 break;
 469         }
 470         if (i == priv->output_limit->entries)
 471                 goto err;
 472
 473         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 474         for (i = 0; i < priv->curve_data->entries; i++) {
 475                 if (*((__le16 *)entry) != freq) {
 476                         entry += priv->curve_data->entry_size;
 477                         continue;
 478                 }
 479
 480                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 481                         memcpy(&body->longbow.curve_data,
 482                                 entry + sizeof(__le16),
 483                                 priv->curve_data->entry_size);
 484                 } else {
 485                         struct p54_scan_body *chan = &body->normal;
 486                         struct pda_pa_curve_data *curve_data =
 487                                 (void *) priv->curve_data->data;
 488
 489                         entry += sizeof(__le16);
 490                         chan->pa_points_per_curve = 8;
 491                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 492                         memcpy(chan->curve_data, entry,
 493                                sizeof(struct p54_pa_curve_data_sample) *
 494                                min((u8)8, curve_data->points_per_channel));
 495                 }
 496                 break;
 497         }
 498         if (i == priv->curve_data->entries)
 499                 goto err;
 500
 501         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 502                 rate = (void *) skb_put(skb, sizeof(*rate));
 503                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 504                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 505                         rate->rts_rates[i] = i;
 506         }
 507
 508         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 509         rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
 510         rssi->mul = cpu_to_le16(rssi_data->mul);
 511         rssi->add = cpu_to_le16(rssi_data->add);
 512         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 513                 /* Longbow frontend needs ever more */
 514                 rssi = (void *) skb_put(skb, sizeof(*rssi));
 515                 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
 516                 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
 517         }
 518
 519         if (priv->fw_var >= 0x509) {
 520                 rate = (void *) skb_put(skb, sizeof(*rate));
 521                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 522                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 523                         rate->rts_rates[i] = i;
 524         }
 525
 526         hdr = (struct p54_hdr *) skb->data;
 527         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 528
 529         p54_tx(priv, skb);
 530         priv->cur_rssi = rssi_data;
 531         return 0;
 532
 533 err:
 534         wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 535                   ieee80211_frequency_to_channel(
 536                           priv->hw->conf.chandef.chan->center_freq));
 537
 538         dev_kfree_skb_any(skb);
 539         return -EINVAL;
 540 }
 541
 542 int p54_set_leds(struct p54_common *priv)
 543 {
 544         struct sk_buff *skb;
 545         struct p54_led *led;
 546
 547         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 548                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 549         if (unlikely(!skb))
 550                 return -ENOMEM;
 551
 552         led = (struct p54_led *) skb_put(skb, sizeof(*led));
 553         led->flags = cpu_to_le16(0x0003);
 554         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 555         led->delay[0] = cpu_to_le16(1);
 556         led->delay[1] = cpu_to_le16(0);
 557         p54_tx(priv, skb);
 558         return 0;
 559 }
 560
 561 int p54_set_edcf(struct p54_common *priv)
 562 {
 563         struct sk_buff *skb;
 564         struct p54_edcf *edcf;
 565         u8 rtd;
 566
 567         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 568                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 569         if (unlikely(!skb))
 570                 return -ENOMEM;
 571
 572         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 573         if (priv->use_short_slot) {
 574                 edcf->slottime = 9;
 575                 edcf->sifs = 0x10;
 576                 edcf->eofpad = 0x00;
 577         } else {
 578                 edcf->slottime = 20;
 579                 edcf->sifs = 0x0a;
 580                 edcf->eofpad = 0x06;
 581         }
 582         /*
 583          * calculate the extra round trip delay according to the
 584          * formula from 802.11-2007 17.3.8.6.
 585          */
 586         rtd = 3 * priv->coverage_class;
 587         edcf->slottime += rtd;
 588         edcf->round_trip_delay = cpu_to_le16(rtd);
 589         /* (see prism54/isl_oid.h for further details) */
 590         edcf->frameburst = cpu_to_le16(0);
 591         edcf->flags = 0;
 592         memset(edcf->mapping, 0, sizeof(edcf->mapping));
 593         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 594         p54_tx(priv, skb);
 595         return 0;
 596 }
 597
 598 int p54_set_ps(struct p54_common *priv)
 599 {
 600         struct sk_buff *skb;
 601         struct p54_psm *psm;
 602         unsigned int i;
 603         u16 mode;
 604
 605         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 606             !priv->powersave_override)
 607                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 608                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
 609         else
 610                 mode = P54_PSM_CAM;
 611
 612         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 613                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 614         if (!skb)
 615                 return -ENOMEM;
 616
 617         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 618         psm->mode = cpu_to_le16(mode);
 619         psm->aid = cpu_to_le16(priv->aid);
 620         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 621                 psm->intervals[i].interval =
 622                         cpu_to_le16(priv->hw->conf.listen_interval);
 623                 psm->intervals[i].periods = cpu_to_le16(1);
 624         }
 625
 626         psm->beacon_rssi_skip_max = 200;
 627         psm->rssi_delta_threshold = 0;
 628         psm->nr = 1;
 629         psm->exclude[0] = WLAN_EID_TIM;
 630
 631         p54_tx(priv, skb);
 632         priv->phy_ps = mode != P54_PSM_CAM;
 633         return 0;
 634 }
 635
 636 int p54_init_xbow_synth(struct p54_common *priv)
 637 {
 638         struct sk_buff *skb;
 639         struct p54_xbow_synth *xbow;
 640
 641         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 642                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 643         if (unlikely(!skb))
 644                 return -ENOMEM;
 645
 646         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 647         xbow->magic1 = cpu_to_le16(0x1);
 648         xbow->magic2 = cpu_to_le16(0x2);
 649         xbow->freq = cpu_to_le16(5390);
 650         memset(xbow->padding, 0, sizeof(xbow->padding));
 651         p54_tx(priv, skb);
 652         return 0;
 653 }
 654
 655 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 656                    u8 *addr, u8* key)
 657 {
 658         struct sk_buff *skb;
 659         struct p54_keycache *rxkey;
 660
 661         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 662                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 663         if (unlikely(!skb))
 664                 return -ENOMEM;
 665
 666         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 667         rxkey->entry = slot;
 668         rxkey->key_id = idx;
 669         rxkey->key_type = algo;
 670         if (addr)
 671                 memcpy(rxkey->mac, addr, ETH_ALEN);
 672         else
 673                 eth_broadcast_addr(rxkey->mac);
 674
 675         switch (algo) {
 676         case P54_CRYPTO_WEP:
 677         case P54_CRYPTO_AESCCMP:
 678                 rxkey->key_len = min_t(u8, 16, len);
 679                 memcpy(rxkey->key, key, rxkey->key_len);
 680                 break;
 681
 682         case P54_CRYPTO_TKIPMICHAEL:
 683                 rxkey->key_len = 24;
 684                 memcpy(rxkey->key, key, 16);
 685                 memcpy(&(rxkey->key[16]), &(key
 686                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 687                 break;
 688
 689         case P54_CRYPTO_NONE:
 690                 rxkey->key_len = 0;
 691                 memset(rxkey->key, 0, sizeof(rxkey->key));
 692                 break;
 693
 694         default:
 695                 wiphy_err(priv->hw->wiphy,
 696                           "invalid cryptographic algorithm: %d\n", algo);
 697                 dev_kfree_skb(skb);
 698                 return -EINVAL;
 699         }
 700
 701         p54_tx(priv, skb);
 702         return 0;
 703 }
 704
 705 int p54_fetch_statistics(struct p54_common *priv)
 706 {
 707         struct ieee80211_tx_info *txinfo;
 708         struct p54_tx_info *p54info;
 709         struct sk_buff *skb;
 710
 711         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 712                             sizeof(struct p54_statistics),
 713                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 714         if (!skb)
 715                 return -ENOMEM;
 716
 717         /*
 718          * The statistic feedback causes some extra headaches here, if it
 719          * is not to crash/corrupt the firmware data structures.
 720          *
 721          * Unlike all other Control Get OIDs we can not use helpers like
 722          * skb_put to reserve the space for the data we're requesting.
 723          * Instead the extra frame length -which will hold the results later-
 724          * will only be told to the p54_assign_address, so that following
 725          * frames won't be placed into the  allegedly empty area.
 726          */
 727         txinfo = IEEE80211_SKB_CB(skb);
 728         p54info = (void *) txinfo->rate_driver_data;
 729         p54info->extra_len = sizeof(struct p54_statistics);
 730
 731         p54_tx(priv, skb);
 732         return 0;
 733 }
 734
 735 int p54_set_groupfilter(struct p54_common *priv)
 736 {
 737         struct p54_group_address_table *grp;
 738         struct sk_buff *skb;
 739         bool on = false;
 740
 741         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
 742                             P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
 743         if (!skb)
 744                 return -ENOMEM;
 745
 746         grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
 747
 748         on = !(priv->filter_flags & FIF_ALLMULTI) &&
 749              (priv->mc_maclist_num > 0 &&
 750               priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
 751
 752         if (on) {
 753                 grp->filter_enable = cpu_to_le16(1);
 754                 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
 755                 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
 756         } else {
 757                 grp->filter_enable = cpu_to_le16(0);
 758                 grp->num_address = cpu_to_le16(0);
 759                 memset(grp->mac_list, 0, sizeof(grp->mac_list));
 760         }
 761
 762         p54_tx(priv, skb);
 763         return 0;
 764 }