drivers/net/wireless/intersil/p54/fwio.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Firmware I/O code for mac80211 Prism54 drivers
   4  *
   5  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   6  * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
   7  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   8  *
   9  * Based on:
  10  * - the islsm (softmac prism54) driver, which is:
  11  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  12  * - stlc45xx driver
  13  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  14  */
  15
  16 #include <linux/slab.h>
  17 #include <linux/firmware.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/export.h>
  20
  21 #include <net/mac80211.h>
  22
  23 #include "p54.h"
  24 #include "eeprom.h"
  25 #include "lmac.h"
  26
  27 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  28 {
  29         struct p54_common *priv = dev->priv;
  30         struct exp_if *exp_if;
  31         struct bootrec *bootrec;
  32         u32 *data = (u32 *)fw->data;
  33         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  34         u8 *fw_version = NULL;
  35         size_t len;
  36         int i;
  37         int maxlen;
  38
  39         if (priv->rx_start)
  40                 return 0;
  41
  42         while (data < end_data && *data)
  43                 data++;
  44
  45         while (data < end_data && !*data)
  46                 data++;
  47
  48         bootrec = (struct bootrec *) data;
  49
  50         while (bootrec->data <= end_data && (bootrec->data +
  51                (len = le32_to_cpu(bootrec->len))) <= end_data) {
  52                 u32 code = le32_to_cpu(bootrec->code);
  53                 switch (code) {
  54                 case BR_CODE_COMPONENT_ID:
  55                         priv->fw_interface = be32_to_cpup((__be32 *)
  56                                              bootrec->data);
  57                         switch (priv->fw_interface) {
  58                         case FW_LM86:
  59                         case FW_LM20:
  60                         case FW_LM87: {
  61                                 char *iftype = (char *)bootrec->data;
  62                                 wiphy_info(priv->hw->wiphy,
  63                                            "p54 detected a LM%c%c firmware\n",
  64                                            iftype[2], iftype[3]);
  65                                 break;
  66                                 }
  67                         case FW_FMAC:
  68                         default:
  69                                 wiphy_err(priv->hw->wiphy,
  70                                           "unsupported firmware\n");
  71                                 return -ENODEV;
  72                         }
  73                         break;
  74                 case BR_CODE_COMPONENT_VERSION:
  75                         /* 24 bytes should be enough for all firmwares */
  76                         if (strnlen((unsigned char *) bootrec->data, 24) < 24)
  77                                 fw_version = (unsigned char *) bootrec->data;
  78                         break;
  79                 case BR_CODE_DESCR: {
  80                         struct bootrec_desc *desc =
  81                                 (struct bootrec_desc *)bootrec->data;
  82                         priv->rx_start = le32_to_cpu(desc->rx_start);
  83                         /* FIXME add sanity checking */
  84                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
  85                         priv->headroom = desc->headroom;
  86                         priv->tailroom = desc->tailroom;
  87                         priv->privacy_caps = desc->privacy_caps;
  88                         priv->rx_keycache_size = desc->rx_keycache_size;
  89                         if (le32_to_cpu(bootrec->len) == 11)
  90                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
  91                         else
  92                                 priv->rx_mtu = (size_t)
  93                                         0x620 - priv->tx_hdr_len;
  94                         maxlen = priv->tx_hdr_len + /* USB devices */
  95                                  sizeof(struct p54_rx_data) +
  96                                  4 + /* rx alignment */
  97                                  IEEE80211_MAX_FRAG_THRESHOLD;
  98                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
  99                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 100                                        "to %d\n", priv->rx_mtu, maxlen);
 101                                 priv->rx_mtu = maxlen;
 102                         }
 103                         break;
 104                         }
 105                 case BR_CODE_EXPOSED_IF:
 106                         exp_if = (struct exp_if *) bootrec->data;
 107                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 108                                 if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
 109                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 110                         break;
 111                 case BR_CODE_DEPENDENT_IF:
 112                         break;
 113                 case BR_CODE_END_OF_BRA:
 114                 case LEGACY_BR_CODE_END_OF_BRA:
 115                         end_data = NULL;
 116                         break;
 117                 default:
 118                         break;
 119                 }
 120                 bootrec = (struct bootrec *)&bootrec->data[len];
 121         }
 122
 123         if (fw_version) {
 124                 wiphy_info(priv->hw->wiphy,
 125                            "FW rev %s - Softmac protocol %x.%x\n",
 126                            fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
 127                 snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
 128                                 "%s - %x.%x", fw_version,
 129                                 priv->fw_var >> 8, priv->fw_var & 0xff);
 130         }
 131
 132         if (priv->fw_var < 0x500)
 133                 wiphy_info(priv->hw->wiphy,
 134                            "you are using an obsolete firmware. "
 135                            "visit http://wireless.wiki.kernel.org/en/users/Drivers/p54 "
 136                            "and grab one for \"kernel >= 2.6.28\"!\n");
 137
 138         if (priv->fw_var >= 0x300) {
 139                 /* Firmware supports QoS, use it! */
 140
 141                 if (priv->fw_var >= 0x500) {
 142                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
 143                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
 144                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
 145                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
 146                 } else {
 147                         priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 148                         priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 149                         priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 150                         priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 151                 }
 152                 priv->hw->queues = P54_QUEUE_AC_NUM;
 153         }
 154
 155         wiphy_info(priv->hw->wiphy,
 156                    "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
 157                    (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
 158                    (priv->privacy_caps &
 159                     (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
 160                    ? "YES" : "no",
 161                    (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
 162                    ? "YES" : "no");
 163
 164         if (priv->rx_keycache_size) {
 165                 /*
 166                  * NOTE:
 167                  *
 168                  * The firmware provides at most 255 (0 - 254) slots
 169                  * for keys which are then used to offload decryption.
 170                  * As a result the 255 entry (aka 0xff) can be used
 171                  * safely by the driver to mark keys that didn't fit
 172                  * into the full cache. This trick saves us from
 173                  * keeping a extra list for uploaded keys.
 174                  */
 175
 176                 priv->used_rxkeys = kcalloc(BITS_TO_LONGS(priv->rx_keycache_size),
 177                                             sizeof(long),
 178                                             GFP_KERNEL);
 179
 180                 if (!priv->used_rxkeys)
 181                         return -ENOMEM;
 182         }
 183
 184         return 0;
 185 }
 186 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 187
 188 static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
 189                                      u16 payload_len, u16 type, gfp_t memflags)
 190 {
 191         struct p54_hdr *hdr;
 192         struct sk_buff *skb;
 193         size_t frame_len = sizeof(*hdr) + payload_len;
 194
 195         if (frame_len > P54_MAX_CTRL_FRAME_LEN)
 196                 return NULL;
 197
 198         if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
 199                 return NULL;
 200
 201         skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
 202         if (!skb)
 203                 return NULL;
 204         skb_reserve(skb, priv->tx_hdr_len);
 205
 206         hdr = skb_put(skb, sizeof(*hdr));
 207         hdr->flags = cpu_to_le16(hdr_flags);
 208         hdr->len = cpu_to_le16(payload_len);
 209         hdr->type = cpu_to_le16(type);
 210         hdr->tries = hdr->rts_tries = 0;
 211         return skb;
 212 }
 213
 214 int p54_download_eeprom(struct p54_common *priv, void *buf,
 215                         u16 offset, u16 len)
 216 {
 217         struct p54_eeprom_lm86 *eeprom_hdr;
 218         struct sk_buff *skb;
 219         size_t eeprom_hdr_size;
 220         int ret = 0;
 221         long timeout;
 222
 223         if (priv->fw_var >= 0x509)
 224                 eeprom_hdr_size = sizeof(*eeprom_hdr);
 225         else
 226                 eeprom_hdr_size = 0x4;
 227
 228         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
 229                             len, P54_CONTROL_TYPE_EEPROM_READBACK,
 230                             GFP_KERNEL);
 231         if (unlikely(!skb))
 232                 return -ENOMEM;
 233
 234         mutex_lock(&priv->eeprom_mutex);
 235         priv->eeprom = buf;
 236         eeprom_hdr = skb_put(skb, eeprom_hdr_size + len);
 237
 238         if (priv->fw_var < 0x509) {
 239                 eeprom_hdr->v1.offset = cpu_to_le16(offset);
 240                 eeprom_hdr->v1.len = cpu_to_le16(len);
 241         } else {
 242                 eeprom_hdr->v2.offset = cpu_to_le32(offset);
 243                 eeprom_hdr->v2.len = cpu_to_le16(len);
 244                 eeprom_hdr->v2.magic2 = 0xf;
 245                 memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
 246         }
 247
 248         p54_tx(priv, skb);
 249
 250         timeout = wait_for_completion_interruptible_timeout(
 251                         &priv->eeprom_comp, HZ);
 252         if (timeout <= 0) {
 253                 wiphy_err(priv->hw->wiphy,
 254                         "device does not respond or signal received!\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 = 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 = 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 = 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 = 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_OTHER_BSS &&
 352                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
 353                         mode |= P54_FILTER_TYPE_TRANSPARENT;
 354         } else {
 355                 mode = P54_FILTER_TYPE_HIBERNATE;
 356         }
 357
 358         setup->mac_mode = cpu_to_le16(mode);
 359         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 360         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 361         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 362         setup->rx_align = 0;
 363         if (priv->fw_var < 0x500) {
 364                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 365                 memset(setup->v1.rts_rates, 0, 8);
 366                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 367                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 368                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 369                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 370                 setup->v1.unalloc0 = cpu_to_le16(0);
 371         } else {
 372                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 373                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 374                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 375                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 376                 setup->v2.truncate = cpu_to_le16(48896);
 377                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 378                 setup->v2.sbss_offset = 0;
 379                 setup->v2.mcast_window = 0;
 380                 setup->v2.rx_rssi_threshold = 0;
 381                 setup->v2.rx_ed_threshold = 0;
 382                 setup->v2.ref_clock = cpu_to_le32(644245094);
 383                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 384                 setup->v2.osc_start_delay = cpu_to_le16(65535);
 385         }
 386         p54_tx(priv, skb);
 387         priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
 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         struct p54_rssi_db_entry *rssi_data;
 401         unsigned int i;
 402         void *entry;
 403         __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->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 = 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 = skb_put(skb, 2);
 420                 *pa_power_points = cpu_to_le16(0x0c);
 421         }
 422
 423         iq_autocal = 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 = skb_put(skb, sizeof(body->longbow));
 437         else
 438                 body = 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                                 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 = 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 = skb_put(skb, sizeof(*rssi));
 506         rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
 507         rssi->mul = cpu_to_le16(rssi_data->mul);
 508         rssi->add = cpu_to_le16(rssi_data->add);
 509         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 510                 /* Longbow frontend needs ever more */
 511                 rssi = skb_put(skb, sizeof(*rssi));
 512                 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
 513                 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
 514         }
 515
 516         if (priv->fw_var >= 0x509) {
 517                 rate = skb_put(skb, sizeof(*rate));
 518                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 519                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 520                         rate->rts_rates[i] = i;
 521         }
 522
 523         hdr = (struct p54_hdr *) skb->data;
 524         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 525
 526         p54_tx(priv, skb);
 527         priv->cur_rssi = rssi_data;
 528         return 0;
 529
 530 err:
 531         wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 532                   ieee80211_frequency_to_channel(
 533                           priv->hw->conf.chandef.chan->center_freq));
 534
 535         dev_kfree_skb_any(skb);
 536         return -EINVAL;
 537 }
 538
 539 int p54_set_leds(struct p54_common *priv)
 540 {
 541         struct sk_buff *skb;
 542         struct p54_led *led;
 543
 544         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 545                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 546         if (unlikely(!skb))
 547                 return -ENOMEM;
 548
 549         led = skb_put(skb, sizeof(*led));
 550         led->flags = cpu_to_le16(0x0003);
 551         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 552         led->delay[0] = cpu_to_le16(1);
 553         led->delay[1] = cpu_to_le16(0);
 554         p54_tx(priv, skb);
 555         return 0;
 556 }
 557
 558 int p54_set_edcf(struct p54_common *priv)
 559 {
 560         struct sk_buff *skb;
 561         struct p54_edcf *edcf;
 562         u8 rtd;
 563
 564         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 565                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 566         if (unlikely(!skb))
 567                 return -ENOMEM;
 568
 569         edcf = skb_put(skb, sizeof(*edcf));
 570         if (priv->use_short_slot) {
 571                 edcf->slottime = 9;
 572                 edcf->sifs = 0x10;
 573                 edcf->eofpad = 0x00;
 574         } else {
 575                 edcf->slottime = 20;
 576                 edcf->sifs = 0x0a;
 577                 edcf->eofpad = 0x06;
 578         }
 579         /*
 580          * calculate the extra round trip delay according to the
 581          * formula from 802.11-2007 17.3.8.6.
 582          */
 583         rtd = 3 * priv->coverage_class;
 584         edcf->slottime += rtd;
 585         edcf->round_trip_delay = cpu_to_le16(rtd);
 586         /* (see prism54/isl_oid.h for further details) */
 587         edcf->frameburst = cpu_to_le16(0);
 588         edcf->flags = 0;
 589         memset(edcf->mapping, 0, sizeof(edcf->mapping));
 590         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 591         p54_tx(priv, skb);
 592         return 0;
 593 }
 594
 595 int p54_set_ps(struct p54_common *priv)
 596 {
 597         struct sk_buff *skb;
 598         struct p54_psm *psm;
 599         unsigned int i;
 600         u16 mode;
 601
 602         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 603             !priv->powersave_override)
 604                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 605                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
 606         else
 607                 mode = P54_PSM_CAM;
 608
 609         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 610                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 611         if (!skb)
 612                 return -ENOMEM;
 613
 614         psm = skb_put(skb, sizeof(*psm));
 615         psm->mode = cpu_to_le16(mode);
 616         psm->aid = cpu_to_le16(priv->aid);
 617         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 618                 psm->intervals[i].interval =
 619                         cpu_to_le16(priv->hw->conf.listen_interval);
 620                 psm->intervals[i].periods = cpu_to_le16(1);
 621         }
 622
 623         psm->beacon_rssi_skip_max = 200;
 624         psm->rssi_delta_threshold = 0;
 625         psm->nr = 1;
 626         psm->exclude[0] = WLAN_EID_TIM;
 627
 628         p54_tx(priv, skb);
 629         priv->phy_ps = mode != P54_PSM_CAM;
 630         return 0;
 631 }
 632
 633 int p54_init_xbow_synth(struct p54_common *priv)
 634 {
 635         struct sk_buff *skb;
 636         struct p54_xbow_synth *xbow;
 637
 638         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 639                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 640         if (unlikely(!skb))
 641                 return -ENOMEM;
 642
 643         xbow = skb_put(skb, sizeof(*xbow));
 644         xbow->magic1 = cpu_to_le16(0x1);
 645         xbow->magic2 = cpu_to_le16(0x2);
 646         xbow->freq = cpu_to_le16(5390);
 647         memset(xbow->padding, 0, sizeof(xbow->padding));
 648         p54_tx(priv, skb);
 649         return 0;
 650 }
 651
 652 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 653                    u8 *addr, u8* key)
 654 {
 655         struct sk_buff *skb;
 656         struct p54_keycache *rxkey;
 657
 658         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 659                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 660         if (unlikely(!skb))
 661                 return -ENOMEM;
 662
 663         rxkey = skb_put(skb, sizeof(*rxkey));
 664         rxkey->entry = slot;
 665         rxkey->key_id = idx;
 666         rxkey->key_type = algo;
 667         if (addr)
 668                 memcpy(rxkey->mac, addr, ETH_ALEN);
 669         else
 670                 eth_broadcast_addr(rxkey->mac);
 671
 672         switch (algo) {
 673         case P54_CRYPTO_WEP:
 674         case P54_CRYPTO_AESCCMP:
 675                 rxkey->key_len = min_t(u8, 16, len);
 676                 memcpy(rxkey->key, key, rxkey->key_len);
 677                 break;
 678
 679         case P54_CRYPTO_TKIPMICHAEL:
 680                 rxkey->key_len = 24;
 681                 memcpy(rxkey->key, key, 16);
 682                 memcpy(&(rxkey->key[16]), &(key
 683                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 684                 break;
 685
 686         case P54_CRYPTO_NONE:
 687                 rxkey->key_len = 0;
 688                 memset(rxkey->key, 0, sizeof(rxkey->key));
 689                 break;
 690
 691         default:
 692                 wiphy_err(priv->hw->wiphy,
 693                           "invalid cryptographic algorithm: %d\n", algo);
 694                 dev_kfree_skb(skb);
 695                 return -EINVAL;
 696         }
 697
 698         p54_tx(priv, skb);
 699         return 0;
 700 }
 701
 702 int p54_fetch_statistics(struct p54_common *priv)
 703 {
 704         struct ieee80211_tx_info *txinfo;
 705         struct p54_tx_info *p54info;
 706         struct sk_buff *skb;
 707
 708         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 709                             sizeof(struct p54_statistics),
 710                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 711         if (!skb)
 712                 return -ENOMEM;
 713
 714         /*
 715          * The statistic feedback causes some extra headaches here, if it
 716          * is not to crash/corrupt the firmware data structures.
 717          *
 718          * Unlike all other Control Get OIDs we can not use helpers like
 719          * skb_put to reserve the space for the data we're requesting.
 720          * Instead the extra frame length -which will hold the results later-
 721          * will only be told to the p54_assign_address, so that following
 722          * frames won't be placed into the  allegedly empty area.
 723          */
 724         txinfo = IEEE80211_SKB_CB(skb);
 725         p54info = (void *) txinfo->rate_driver_data;
 726         p54info->extra_len = sizeof(struct p54_statistics);
 727
 728         p54_tx(priv, skb);
 729         return 0;
 730 }
 731
 732 int p54_set_groupfilter(struct p54_common *priv)
 733 {
 734         struct p54_group_address_table *grp;
 735         struct sk_buff *skb;
 736         bool on = false;
 737
 738         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
 739                             P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
 740         if (!skb)
 741                 return -ENOMEM;
 742
 743         grp = skb_put(skb, sizeof(*grp));
 744
 745         on = !(priv->filter_flags & FIF_ALLMULTI) &&
 746              (priv->mc_maclist_num > 0 &&
 747               priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
 748
 749         if (on) {
 750                 grp->filter_enable = cpu_to_le16(1);
 751                 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
 752                 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
 753         } else {
 754                 grp->filter_enable = cpu_to_le16(0);
 755                 grp->num_address = cpu_to_le16(0);
 756                 memset(grp->mac_list, 0, sizeof(grp->mac_list));
 757         }
 758
 759         p54_tx(priv, skb);
 760         return 0;
 761 }