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