kernel/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/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_PROMISC_IN_BSS) ||
 355                      (priv->filter_flags & FIF_OTHER_BSS)) &&
 356                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
 357                         mode |= P54_FILTER_TYPE_TRANSPARENT;
 358         } else {
 359                 mode = P54_FILTER_TYPE_HIBERNATE;
 360         }
 361
 362         setup->mac_mode = cpu_to_le16(mode);
 363         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 364         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 365         setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 366         setup->rx_align = 0;
 367         if (priv->fw_var < 0x500) {
 368                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 369                 memset(setup->v1.rts_rates, 0, 8);
 370                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 371                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 372                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 373                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 374                 setup->v1.unalloc0 = cpu_to_le16(0);
 375         } else {
 376                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 377                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 378                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 379                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 380                 setup->v2.truncate = cpu_to_le16(48896);
 381                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 382                 setup->v2.sbss_offset = 0;
 383                 setup->v2.mcast_window = 0;
 384                 setup->v2.rx_rssi_threshold = 0;
 385                 setup->v2.rx_ed_threshold = 0;
 386                 setup->v2.ref_clock = cpu_to_le32(644245094);
 387                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 388                 setup->v2.osc_start_delay = cpu_to_le16(65535);
 389         }
 390         p54_tx(priv, skb);
 391         priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
 392         return 0;
 393 }
 394
 395 int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 396 {
 397         struct sk_buff *skb;
 398         struct p54_hdr *hdr;
 399         struct p54_scan_head *head;
 400         struct p54_iq_autocal_entry *iq_autocal;
 401         union p54_scan_body_union *body;
 402         struct p54_scan_tail_rate *rate;
 403         struct pda_rssi_cal_entry *rssi;
 404         struct p54_rssi_db_entry *rssi_data;
 405         unsigned int i;
 406         void *entry;
 407         __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
 408
 409         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 410                             2 + sizeof(*iq_autocal) + sizeof(*body) +
 411                             sizeof(*rate) + 2 * sizeof(*rssi),
 412                             P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 413         if (!skb)
 414                 return -ENOMEM;
 415
 416         head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 417         memset(head->scan_params, 0, sizeof(head->scan_params));
 418         head->mode = cpu_to_le16(mode);
 419         head->dwell = cpu_to_le16(dwell);
 420         head->freq = freq;
 421
 422         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 423                 __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 424                 *pa_power_points = cpu_to_le16(0x0c);
 425         }
 426
 427         iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 428         for (i = 0; i < priv->iq_autocal_len; i++) {
 429                 if (priv->iq_autocal[i].freq != freq)
 430                         continue;
 431
 432                 memcpy(iq_autocal, &priv->iq_autocal[i].params,
 433                        sizeof(struct p54_iq_autocal_entry));
 434                 break;
 435         }
 436         if (i == priv->iq_autocal_len)
 437                 goto err;
 438
 439         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 440                 body = (void *) skb_put(skb, sizeof(body->longbow));
 441         else
 442                 body = (void *) skb_put(skb, sizeof(body->normal));
 443
 444         for (i = 0; i < priv->output_limit->entries; i++) {
 445                 __le16 *entry_freq = (void *) (priv->output_limit->data +
 446                                      priv->output_limit->entry_size * i);
 447
 448                 if (*entry_freq != freq)
 449                         continue;
 450
 451                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 452                         memcpy(&body->longbow.power_limits,
 453                                (void *) entry_freq + sizeof(__le16),
 454                                priv->output_limit->entry_size);
 455                 } else {
 456                         struct pda_channel_output_limit *limits =
 457                                (void *) entry_freq;
 458
 459                         body->normal.val_barker = 0x38;
 460                         body->normal.val_bpsk = body->normal.dup_bpsk =
 461                                 limits->val_bpsk;
 462                         body->normal.val_qpsk = body->normal.dup_qpsk =
 463                                 limits->val_qpsk;
 464                         body->normal.val_16qam = body->normal.dup_16qam =
 465                                 limits->val_16qam;
 466                         body->normal.val_64qam = body->normal.dup_64qam =
 467                                 limits->val_64qam;
 468                 }
 469                 break;
 470         }
 471         if (i == priv->output_limit->entries)
 472                 goto err;
 473
 474         entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 475         for (i = 0; i < priv->curve_data->entries; i++) {
 476                 if (*((__le16 *)entry) != freq) {
 477                         entry += priv->curve_data->entry_size;
 478                         continue;
 479                 }
 480
 481                 if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 482                         memcpy(&body->longbow.curve_data,
 483                                 entry + sizeof(__le16),
 484                                 priv->curve_data->entry_size);
 485                 } else {
 486                         struct p54_scan_body *chan = &body->normal;
 487                         struct pda_pa_curve_data *curve_data =
 488                                 (void *) priv->curve_data->data;
 489
 490                         entry += sizeof(__le16);
 491                         chan->pa_points_per_curve = 8;
 492                         memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 493                         memcpy(chan->curve_data, entry,
 494                                sizeof(struct p54_pa_curve_data_sample) *
 495                                min((u8)8, curve_data->points_per_channel));
 496                 }
 497                 break;
 498         }
 499         if (i == priv->curve_data->entries)
 500                 goto err;
 501
 502         if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 503                 rate = (void *) skb_put(skb, sizeof(*rate));
 504                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 505                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 506                         rate->rts_rates[i] = i;
 507         }
 508
 509         rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 510         rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
 511         rssi->mul = cpu_to_le16(rssi_data->mul);
 512         rssi->add = cpu_to_le16(rssi_data->add);
 513         if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 514                 /* Longbow frontend needs ever more */
 515                 rssi = (void *) skb_put(skb, sizeof(*rssi));
 516                 rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
 517                 rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
 518         }
 519
 520         if (priv->fw_var >= 0x509) {
 521                 rate = (void *) skb_put(skb, sizeof(*rate));
 522                 rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 523                 for (i = 0; i < sizeof(rate->rts_rates); i++)
 524                         rate->rts_rates[i] = i;
 525         }
 526
 527         hdr = (struct p54_hdr *) skb->data;
 528         hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 529
 530         p54_tx(priv, skb);
 531         priv->cur_rssi = rssi_data;
 532         return 0;
 533
 534 err:
 535         wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 536                   ieee80211_frequency_to_channel(
 537                           priv->hw->conf.chandef.chan->center_freq));
 538
 539         dev_kfree_skb_any(skb);
 540         return -EINVAL;
 541 }
 542
 543 int p54_set_leds(struct p54_common *priv)
 544 {
 545         struct sk_buff *skb;
 546         struct p54_led *led;
 547
 548         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 549                             P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 550         if (unlikely(!skb))
 551                 return -ENOMEM;
 552
 553         led = (struct p54_led *) skb_put(skb, sizeof(*led));
 554         led->flags = cpu_to_le16(0x0003);
 555         led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 556         led->delay[0] = cpu_to_le16(1);
 557         led->delay[1] = cpu_to_le16(0);
 558         p54_tx(priv, skb);
 559         return 0;
 560 }
 561
 562 int p54_set_edcf(struct p54_common *priv)
 563 {
 564         struct sk_buff *skb;
 565         struct p54_edcf *edcf;
 566         u8 rtd;
 567
 568         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 569                             P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 570         if (unlikely(!skb))
 571                 return -ENOMEM;
 572
 573         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 574         if (priv->use_short_slot) {
 575                 edcf->slottime = 9;
 576                 edcf->sifs = 0x10;
 577                 edcf->eofpad = 0x00;
 578         } else {
 579                 edcf->slottime = 20;
 580                 edcf->sifs = 0x0a;
 581                 edcf->eofpad = 0x06;
 582         }
 583         /*
 584          * calculate the extra round trip delay according to the
 585          * formula from 802.11-2007 17.3.8.6.
 586          */
 587         rtd = 3 * priv->coverage_class;
 588         edcf->slottime += rtd;
 589         edcf->round_trip_delay = cpu_to_le16(rtd);
 590         /* (see prism54/isl_oid.h for further details) */
 591         edcf->frameburst = cpu_to_le16(0);
 592         edcf->flags = 0;
 593         memset(edcf->mapping, 0, sizeof(edcf->mapping));
 594         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 595         p54_tx(priv, skb);
 596         return 0;
 597 }
 598
 599 int p54_set_ps(struct p54_common *priv)
 600 {
 601         struct sk_buff *skb;
 602         struct p54_psm *psm;
 603         unsigned int i;
 604         u16 mode;
 605
 606         if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 607             !priv->powersave_override)
 608                 mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 609                        P54_PSM_CHECKSUM | P54_PSM_MCBC;
 610         else
 611                 mode = P54_PSM_CAM;
 612
 613         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 614                             P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 615         if (!skb)
 616                 return -ENOMEM;
 617
 618         psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 619         psm->mode = cpu_to_le16(mode);
 620         psm->aid = cpu_to_le16(priv->aid);
 621         for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 622                 psm->intervals[i].interval =
 623                         cpu_to_le16(priv->hw->conf.listen_interval);
 624                 psm->intervals[i].periods = cpu_to_le16(1);
 625         }
 626
 627         psm->beacon_rssi_skip_max = 200;
 628         psm->rssi_delta_threshold = 0;
 629         psm->nr = 1;
 630         psm->exclude[0] = WLAN_EID_TIM;
 631
 632         p54_tx(priv, skb);
 633         priv->phy_ps = mode != P54_PSM_CAM;
 634         return 0;
 635 }
 636
 637 int p54_init_xbow_synth(struct p54_common *priv)
 638 {
 639         struct sk_buff *skb;
 640         struct p54_xbow_synth *xbow;
 641
 642         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 643                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 644         if (unlikely(!skb))
 645                 return -ENOMEM;
 646
 647         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 648         xbow->magic1 = cpu_to_le16(0x1);
 649         xbow->magic2 = cpu_to_le16(0x2);
 650         xbow->freq = cpu_to_le16(5390);
 651         memset(xbow->padding, 0, sizeof(xbow->padding));
 652         p54_tx(priv, skb);
 653         return 0;
 654 }
 655
 656 int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 657                    u8 *addr, u8* key)
 658 {
 659         struct sk_buff *skb;
 660         struct p54_keycache *rxkey;
 661
 662         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 663                             P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 664         if (unlikely(!skb))
 665                 return -ENOMEM;
 666
 667         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 668         rxkey->entry = slot;
 669         rxkey->key_id = idx;
 670         rxkey->key_type = algo;
 671         if (addr)
 672                 memcpy(rxkey->mac, addr, ETH_ALEN);
 673         else
 674                 eth_broadcast_addr(rxkey->mac);
 675
 676         switch (algo) {
 677         case P54_CRYPTO_WEP:
 678         case P54_CRYPTO_AESCCMP:
 679                 rxkey->key_len = min_t(u8, 16, len);
 680                 memcpy(rxkey->key, key, rxkey->key_len);
 681                 break;
 682
 683         case P54_CRYPTO_TKIPMICHAEL:
 684                 rxkey->key_len = 24;
 685                 memcpy(rxkey->key, key, 16);
 686                 memcpy(&(rxkey->key[16]), &(key
 687                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 688                 break;
 689
 690         case P54_CRYPTO_NONE:
 691                 rxkey->key_len = 0;
 692                 memset(rxkey->key, 0, sizeof(rxkey->key));
 693                 break;
 694
 695         default:
 696                 wiphy_err(priv->hw->wiphy,
 697                           "invalid cryptographic algorithm: %d\n", algo);
 698                 dev_kfree_skb(skb);
 699                 return -EINVAL;
 700         }
 701
 702         p54_tx(priv, skb);
 703         return 0;
 704 }
 705
 706 int p54_fetch_statistics(struct p54_common *priv)
 707 {
 708         struct ieee80211_tx_info *txinfo;
 709         struct p54_tx_info *p54info;
 710         struct sk_buff *skb;
 711
 712         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 713                             sizeof(struct p54_statistics),
 714                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 715         if (!skb)
 716                 return -ENOMEM;
 717
 718         /*
 719          * The statistic feedback causes some extra headaches here, if it
 720          * is not to crash/corrupt the firmware data structures.
 721          *
 722          * Unlike all other Control Get OIDs we can not use helpers like
 723          * skb_put to reserve the space for the data we're requesting.
 724          * Instead the extra frame length -which will hold the results later-
 725          * will only be told to the p54_assign_address, so that following
 726          * frames won't be placed into the  allegedly empty area.
 727          */
 728         txinfo = IEEE80211_SKB_CB(skb);
 729         p54info = (void *) txinfo->rate_driver_data;
 730         p54info->extra_len = sizeof(struct p54_statistics);
 731
 732         p54_tx(priv, skb);
 733         return 0;
 734 }
 735
 736 int p54_set_groupfilter(struct p54_common *priv)
 737 {
 738         struct p54_group_address_table *grp;
 739         struct sk_buff *skb;
 740         bool on = false;
 741
 742         skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
 743                             P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
 744         if (!skb)
 745                 return -ENOMEM;
 746
 747         grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
 748
 749         on = !(priv->filter_flags & FIF_ALLMULTI) &&
 750              (priv->mc_maclist_num > 0 &&
 751               priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
 752
 753         if (on) {
 754                 grp->filter_enable = cpu_to_le16(1);
 755                 grp->num_address = cpu_to_le16(priv->mc_maclist_num);
 756                 memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
 757         } else {
 758                 grp->filter_enable = cpu_to_le16(0);
 759                 grp->num_address = cpu_to_le16(0);
 760                 memset(grp->mac_list, 0, sizeof(grp->mac_list));
 761         }
 762
 763         p54_tx(priv, skb);
 764         return 0;
 765 }