linux/drivers/net/wireless/p54/fwio.c
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   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
  30int 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}
 188EXPORT_SYMBOL_GPL(p54_parse_firmware);
 189
 190static 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
 216int p54_download_eeprom(struct p54_common *priv, void *buf,
 217                        u16 offset, u16 len)
 218{
 219        struct p54_eeprom_lm86 *eeprom_hdr;
 220        struct sk_buff *skb;
 221        size_t eeprom_hdr_size;
 222        int ret = 0;
 223
 224        if (priv->fw_var >= 0x509)
 225                eeprom_hdr_size = sizeof(*eeprom_hdr);
 226        else
 227                eeprom_hdr_size = 0x4;
 228
 229        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL, eeprom_hdr_size +
 230                            len, P54_CONTROL_TYPE_EEPROM_READBACK,
 231                            GFP_KERNEL);
 232        if (unlikely(!skb))
 233                return -ENOMEM;
 234
 235        mutex_lock(&priv->eeprom_mutex);
 236        priv->eeprom = buf;
 237        eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
 238                eeprom_hdr_size + len);
 239
 240        if (priv->fw_var < 0x509) {
 241                eeprom_hdr->v1.offset = cpu_to_le16(offset);
 242                eeprom_hdr->v1.len = cpu_to_le16(len);
 243        } else {
 244                eeprom_hdr->v2.offset = cpu_to_le32(offset);
 245                eeprom_hdr->v2.len = cpu_to_le16(len);
 246                eeprom_hdr->v2.magic2 = 0xf;
 247                memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
 248        }
 249
 250        p54_tx(priv, skb);
 251
 252        if (!wait_for_completion_interruptible_timeout(
 253             &priv->eeprom_comp, HZ)) {
 254                wiphy_err(priv->hw->wiphy, "device does not respond!\n");
 255                ret = -EBUSY;
 256        }
 257        priv->eeprom = NULL;
 258        mutex_unlock(&priv->eeprom_mutex);
 259        return ret;
 260}
 261
 262int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
 263{
 264        struct sk_buff *skb;
 265        struct p54_tim *tim;
 266
 267        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
 268                            P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
 269        if (unlikely(!skb))
 270                return -ENOMEM;
 271
 272        tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
 273        tim->count = 1;
 274        tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
 275        p54_tx(priv, skb);
 276        return 0;
 277}
 278
 279int p54_sta_unlock(struct p54_common *priv, u8 *addr)
 280{
 281        struct sk_buff *skb;
 282        struct p54_sta_unlock *sta;
 283
 284        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
 285                            P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
 286        if (unlikely(!skb))
 287                return -ENOMEM;
 288
 289        sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
 290        memcpy(sta->addr, addr, ETH_ALEN);
 291        p54_tx(priv, skb);
 292        return 0;
 293}
 294
 295int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
 296{
 297        struct sk_buff *skb;
 298        struct p54_txcancel *cancel;
 299        u32 _req_id = le32_to_cpu(req_id);
 300
 301        if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
 302                return -EINVAL;
 303
 304        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
 305                            P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
 306        if (unlikely(!skb))
 307                return -ENOMEM;
 308
 309        cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
 310        cancel->req_id = req_id;
 311        p54_tx(priv, skb);
 312        return 0;
 313}
 314
 315int p54_setup_mac(struct p54_common *priv)
 316{
 317        struct sk_buff *skb;
 318        struct p54_setup_mac *setup;
 319        u16 mode;
 320
 321        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
 322                            P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
 323        if (!skb)
 324                return -ENOMEM;
 325
 326        setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
 327        if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
 328                switch (priv->mode) {
 329                case NL80211_IFTYPE_STATION:
 330                        mode = P54_FILTER_TYPE_STATION;
 331                        break;
 332                case NL80211_IFTYPE_AP:
 333                        mode = P54_FILTER_TYPE_AP;
 334                        break;
 335                case NL80211_IFTYPE_ADHOC:
 336                case NL80211_IFTYPE_MESH_POINT:
 337                        mode = P54_FILTER_TYPE_IBSS;
 338                        break;
 339                case NL80211_IFTYPE_MONITOR:
 340                        mode = P54_FILTER_TYPE_PROMISCUOUS;
 341                        break;
 342                default:
 343                        mode = P54_FILTER_TYPE_HIBERNATE;
 344                        break;
 345                }
 346
 347                /*
 348                 * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
 349                 * STSW45X0C LMAC API - page 12
 350                 */
 351                if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
 352                     (priv->filter_flags & FIF_OTHER_BSS)) &&
 353                    (mode != P54_FILTER_TYPE_PROMISCUOUS))
 354                        mode |= P54_FILTER_TYPE_TRANSPARENT;
 355        } else {
 356                mode = P54_FILTER_TYPE_HIBERNATE;
 357        }
 358
 359        setup->mac_mode = cpu_to_le16(mode);
 360        memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 361        memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 362        setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 363        setup->rx_align = 0;
 364        if (priv->fw_var < 0x500) {
 365                setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 366                memset(setup->v1.rts_rates, 0, 8);
 367                setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 368                setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 369                setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 370                setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 371                setup->v1.unalloc0 = cpu_to_le16(0);
 372        } else {
 373                setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 374                setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 375                setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 376                setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 377                setup->v2.truncate = cpu_to_le16(48896);
 378                setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 379                setup->v2.sbss_offset = 0;
 380                setup->v2.mcast_window = 0;
 381                setup->v2.rx_rssi_threshold = 0;
 382                setup->v2.rx_ed_threshold = 0;
 383                setup->v2.ref_clock = cpu_to_le32(644245094);
 384                setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 385                setup->v2.osc_start_delay = cpu_to_le16(65535);
 386        }
 387        p54_tx(priv, skb);
 388        priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
 389        return 0;
 390}
 391
 392int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 393{
 394        struct sk_buff *skb;
 395        struct p54_hdr *hdr;
 396        struct p54_scan_head *head;
 397        struct p54_iq_autocal_entry *iq_autocal;
 398        union p54_scan_body_union *body;
 399        struct p54_scan_tail_rate *rate;
 400        struct pda_rssi_cal_entry *rssi;
 401        struct p54_rssi_db_entry *rssi_data;
 402        unsigned int i;
 403        void *entry;
 404        __le16 freq = cpu_to_le16(priv->hw->conf.chandef.chan->center_freq);
 405
 406        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 407                            2 + sizeof(*iq_autocal) + sizeof(*body) +
 408                            sizeof(*rate) + 2 * sizeof(*rssi),
 409                            P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 410        if (!skb)
 411                return -ENOMEM;
 412
 413        head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 414        memset(head->scan_params, 0, sizeof(head->scan_params));
 415        head->mode = cpu_to_le16(mode);
 416        head->dwell = cpu_to_le16(dwell);
 417        head->freq = freq;
 418
 419        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 420                __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 421                *pa_power_points = cpu_to_le16(0x0c);
 422        }
 423
 424        iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 425        for (i = 0; i < priv->iq_autocal_len; i++) {
 426                if (priv->iq_autocal[i].freq != freq)
 427                        continue;
 428
 429                memcpy(iq_autocal, &priv->iq_autocal[i].params,
 430                       sizeof(struct p54_iq_autocal_entry));
 431                break;
 432        }
 433        if (i == priv->iq_autocal_len)
 434                goto err;
 435
 436        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 437                body = (void *) skb_put(skb, sizeof(body->longbow));
 438        else
 439                body = (void *) skb_put(skb, sizeof(body->normal));
 440
 441        for (i = 0; i < priv->output_limit->entries; i++) {
 442                __le16 *entry_freq = (void *) (priv->output_limit->data +
 443                                     priv->output_limit->entry_size * i);
 444
 445                if (*entry_freq != freq)
 446                        continue;
 447
 448                if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 449                        memcpy(&body->longbow.power_limits,
 450                               (void *) entry_freq + sizeof(__le16),
 451                               priv->output_limit->entry_size);
 452                } else {
 453                        struct pda_channel_output_limit *limits =
 454                               (void *) entry_freq;
 455
 456                        body->normal.val_barker = 0x38;
 457                        body->normal.val_bpsk = body->normal.dup_bpsk =
 458                                limits->val_bpsk;
 459                        body->normal.val_qpsk = body->normal.dup_qpsk =
 460                                limits->val_qpsk;
 461                        body->normal.val_16qam = body->normal.dup_16qam =
 462                                limits->val_16qam;
 463                        body->normal.val_64qam = body->normal.dup_64qam =
 464                                limits->val_64qam;
 465                }
 466                break;
 467        }
 468        if (i == priv->output_limit->entries)
 469                goto err;
 470
 471        entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 472        for (i = 0; i < priv->curve_data->entries; i++) {
 473                if (*((__le16 *)entry) != freq) {
 474                        entry += priv->curve_data->entry_size;
 475                        continue;
 476                }
 477
 478                if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 479                        memcpy(&body->longbow.curve_data,
 480                                entry + sizeof(__le16),
 481                                priv->curve_data->entry_size);
 482                } else {
 483                        struct p54_scan_body *chan = &body->normal;
 484                        struct pda_pa_curve_data *curve_data =
 485                                (void *) priv->curve_data->data;
 486
 487                        entry += sizeof(__le16);
 488                        chan->pa_points_per_curve = 8;
 489                        memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 490                        memcpy(chan->curve_data, entry,
 491                               sizeof(struct p54_pa_curve_data_sample) *
 492                               min((u8)8, curve_data->points_per_channel));
 493                }
 494                break;
 495        }
 496        if (i == priv->curve_data->entries)
 497                goto err;
 498
 499        if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 500                rate = (void *) skb_put(skb, sizeof(*rate));
 501                rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 502                for (i = 0; i < sizeof(rate->rts_rates); i++)
 503                        rate->rts_rates[i] = i;
 504        }
 505
 506        rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 507        rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
 508        rssi->mul = cpu_to_le16(rssi_data->mul);
 509        rssi->add = cpu_to_le16(rssi_data->add);
 510        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 511                /* Longbow frontend needs ever more */
 512                rssi = (void *) skb_put(skb, sizeof(*rssi));
 513                rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
 514                rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
 515        }
 516
 517        if (priv->fw_var >= 0x509) {
 518                rate = (void *) skb_put(skb, sizeof(*rate));
 519                rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 520                for (i = 0; i < sizeof(rate->rts_rates); i++)
 521                        rate->rts_rates[i] = i;
 522        }
 523
 524        hdr = (struct p54_hdr *) skb->data;
 525        hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 526
 527        p54_tx(priv, skb);
 528        priv->cur_rssi = rssi_data;
 529        return 0;
 530
 531err:
 532        wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 533                  ieee80211_frequency_to_channel(
 534                          priv->hw->conf.chandef.chan->center_freq));
 535
 536        dev_kfree_skb_any(skb);
 537        return -EINVAL;
 538}
 539
 540int p54_set_leds(struct p54_common *priv)
 541{
 542        struct sk_buff *skb;
 543        struct p54_led *led;
 544
 545        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 546                            P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 547        if (unlikely(!skb))
 548                return -ENOMEM;
 549
 550        led = (struct p54_led *) skb_put(skb, sizeof(*led));
 551        led->flags = cpu_to_le16(0x0003);
 552        led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 553        led->delay[0] = cpu_to_le16(1);
 554        led->delay[1] = cpu_to_le16(0);
 555        p54_tx(priv, skb);
 556        return 0;
 557}
 558
 559int p54_set_edcf(struct p54_common *priv)
 560{
 561        struct sk_buff *skb;
 562        struct p54_edcf *edcf;
 563        u8 rtd;
 564
 565        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 566                            P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 567        if (unlikely(!skb))
 568                return -ENOMEM;
 569
 570        edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 571        if (priv->use_short_slot) {
 572                edcf->slottime = 9;
 573                edcf->sifs = 0x10;
 574                edcf->eofpad = 0x00;
 575        } else {
 576                edcf->slottime = 20;
 577                edcf->sifs = 0x0a;
 578                edcf->eofpad = 0x06;
 579        }
 580        /*
 581         * calculate the extra round trip delay according to the
 582         * formula from 802.11-2007 17.3.8.6.
 583         */
 584        rtd = 3 * priv->coverage_class;
 585        edcf->slottime += rtd;
 586        edcf->round_trip_delay = cpu_to_le16(rtd);
 587        /* (see prism54/isl_oid.h for further details) */
 588        edcf->frameburst = cpu_to_le16(0);
 589        edcf->flags = 0;
 590        memset(edcf->mapping, 0, sizeof(edcf->mapping));
 591        memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 592        p54_tx(priv, skb);
 593        return 0;
 594}
 595
 596int p54_set_ps(struct p54_common *priv)
 597{
 598        struct sk_buff *skb;
 599        struct p54_psm *psm;
 600        unsigned int i;
 601        u16 mode;
 602
 603        if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 604            !priv->powersave_override)
 605                mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 606                       P54_PSM_CHECKSUM | P54_PSM_MCBC;
 607        else
 608                mode = P54_PSM_CAM;
 609
 610        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 611                            P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 612        if (!skb)
 613                return -ENOMEM;
 614
 615        psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 616        psm->mode = cpu_to_le16(mode);
 617        psm->aid = cpu_to_le16(priv->aid);
 618        for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 619                psm->intervals[i].interval =
 620                        cpu_to_le16(priv->hw->conf.listen_interval);
 621                psm->intervals[i].periods = cpu_to_le16(1);
 622        }
 623
 624        psm->beacon_rssi_skip_max = 200;
 625        psm->rssi_delta_threshold = 0;
 626        psm->nr = 1;
 627        psm->exclude[0] = WLAN_EID_TIM;
 628
 629        p54_tx(priv, skb);
 630        priv->phy_ps = mode != P54_PSM_CAM;
 631        return 0;
 632}
 633
 634int p54_init_xbow_synth(struct p54_common *priv)
 635{
 636        struct sk_buff *skb;
 637        struct p54_xbow_synth *xbow;
 638
 639        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 640                            P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 641        if (unlikely(!skb))
 642                return -ENOMEM;
 643
 644        xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 645        xbow->magic1 = cpu_to_le16(0x1);
 646        xbow->magic2 = cpu_to_le16(0x2);
 647        xbow->freq = cpu_to_le16(5390);
 648        memset(xbow->padding, 0, sizeof(xbow->padding));
 649        p54_tx(priv, skb);
 650        return 0;
 651}
 652
 653int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 654                   u8 *addr, u8* key)
 655{
 656        struct sk_buff *skb;
 657        struct p54_keycache *rxkey;
 658
 659        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 660                            P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 661        if (unlikely(!skb))
 662                return -ENOMEM;
 663
 664        rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 665        rxkey->entry = slot;
 666        rxkey->key_id = idx;
 667        rxkey->key_type = algo;
 668        if (addr)
 669                memcpy(rxkey->mac, addr, ETH_ALEN);
 670        else
 671                memset(rxkey->mac, ~0, ETH_ALEN);
 672
 673        switch (algo) {
 674        case P54_CRYPTO_WEP:
 675        case P54_CRYPTO_AESCCMP:
 676                rxkey->key_len = min_t(u8, 16, len);
 677                memcpy(rxkey->key, key, rxkey->key_len);
 678                break;
 679
 680        case P54_CRYPTO_TKIPMICHAEL:
 681                rxkey->key_len = 24;
 682                memcpy(rxkey->key, key, 16);
 683                memcpy(&(rxkey->key[16]), &(key
 684                        [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 685                break;
 686
 687        case P54_CRYPTO_NONE:
 688                rxkey->key_len = 0;
 689                memset(rxkey->key, 0, sizeof(rxkey->key));
 690                break;
 691
 692        default:
 693                wiphy_err(priv->hw->wiphy,
 694                          "invalid cryptographic algorithm: %d\n", algo);
 695                dev_kfree_skb(skb);
 696                return -EINVAL;
 697        }
 698
 699        p54_tx(priv, skb);
 700        return 0;
 701}
 702
 703int p54_fetch_statistics(struct p54_common *priv)
 704{
 705        struct ieee80211_tx_info *txinfo;
 706        struct p54_tx_info *p54info;
 707        struct sk_buff *skb;
 708
 709        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 710                            sizeof(struct p54_statistics),
 711                            P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 712        if (!skb)
 713                return -ENOMEM;
 714
 715        /*
 716         * The statistic feedback causes some extra headaches here, if it
 717         * is not to crash/corrupt the firmware data structures.
 718         *
 719         * Unlike all other Control Get OIDs we can not use helpers like
 720         * skb_put to reserve the space for the data we're requesting.
 721         * Instead the extra frame length -which will hold the results later-
 722         * will only be told to the p54_assign_address, so that following
 723         * frames won't be placed into the  allegedly empty area.
 724         */
 725        txinfo = IEEE80211_SKB_CB(skb);
 726        p54info = (void *) txinfo->rate_driver_data;
 727        p54info->extra_len = sizeof(struct p54_statistics);
 728
 729        p54_tx(priv, skb);
 730        return 0;
 731}
 732
 733int p54_set_groupfilter(struct p54_common *priv)
 734{
 735        struct p54_group_address_table *grp;
 736        struct sk_buff *skb;
 737        bool on = false;
 738
 739        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
 740                            P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
 741        if (!skb)
 742                return -ENOMEM;
 743
 744        grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
 745
 746        on = !(priv->filter_flags & FIF_ALLMULTI) &&
 747             (priv->mc_maclist_num > 0 &&
 748              priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
 749
 750        if (on) {
 751                grp->filter_enable = cpu_to_le16(1);
 752                grp->num_address = cpu_to_le16(priv->mc_maclist_num);
 753                memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
 754        } else {
 755                grp->filter_enable = cpu_to_le16(0);
 756                grp->num_address = cpu_to_le16(0);
 757                memset(grp->mac_list, 0, sizeof(grp->mac_list));
 758        }
 759
 760        p54_tx(priv, skb);
 761        return 0;
 762}
 763