linux/drivers/net/wireless/p54/fwio.c
<<
>>
Prefs
   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/slab.h>
  21#include <linux/firmware.h>
  22#include <linux/etherdevice.h>
  23#include <linux/export.h>
  24
  25#include <net/mac80211.h>
  26
  27#include "p54.h"
  28#include "eeprom.h"
  29#include "lmac.h"
  30
  31int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
  32{
  33        struct p54_common *priv = dev->priv;
  34        struct exp_if *exp_if;
  35        struct bootrec *bootrec;
  36        u32 *data = (u32 *)fw->data;
  37        u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
  38        u8 *fw_version = NULL;
  39        size_t len;
  40        int i;
  41        int maxlen;
  42
  43        if (priv->rx_start)
  44                return 0;
  45
  46        while (data < end_data && *data)
  47                data++;
  48
  49        while (data < end_data && !*data)
  50                data++;
  51
  52        bootrec = (struct bootrec *) data;
  53
  54        while (bootrec->data <= end_data && (bootrec->data +
  55               (len = le32_to_cpu(bootrec->len))) <= end_data) {
  56                u32 code = le32_to_cpu(bootrec->code);
  57                switch (code) {
  58                case BR_CODE_COMPONENT_ID:
  59                        priv->fw_interface = be32_to_cpup((__be32 *)
  60                                             bootrec->data);
  61                        switch (priv->fw_interface) {
  62                        case FW_LM86:
  63                        case FW_LM20:
  64                        case FW_LM87: {
  65                                char *iftype = (char *)bootrec->data;
  66                                wiphy_info(priv->hw->wiphy,
  67                                           "p54 detected a LM%c%c firmware\n",
  68                                           iftype[2], iftype[3]);
  69                                break;
  70                                }
  71                        case FW_FMAC:
  72                        default:
  73                                wiphy_err(priv->hw->wiphy,
  74                                          "unsupported firmware\n");
  75                                return -ENODEV;
  76                        }
  77                        break;
  78                case BR_CODE_COMPONENT_VERSION:
  79                        /* 24 bytes should be enough for all firmwares */
  80                        if (strnlen((unsigned char *) bootrec->data, 24) < 24)
  81                                fw_version = (unsigned char *) bootrec->data;
  82                        break;
  83                case BR_CODE_DESCR: {
  84                        struct bootrec_desc *desc =
  85                                (struct bootrec_desc *)bootrec->data;
  86                        priv->rx_start = le32_to_cpu(desc->rx_start);
  87                        /* FIXME add sanity checking */
  88                        priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
  89                        priv->headroom = desc->headroom;
  90                        priv->tailroom = desc->tailroom;
  91                        priv->privacy_caps = desc->privacy_caps;
  92                        priv->rx_keycache_size = desc->rx_keycache_size;
  93                        if (le32_to_cpu(bootrec->len) == 11)
  94                                priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
  95                        else
  96                                priv->rx_mtu = (size_t)
  97                                        0x620 - priv->tx_hdr_len;
  98                        maxlen = priv->tx_hdr_len + /* USB devices */
  99                                 sizeof(struct p54_rx_data) +
 100                                 4 + /* rx alignment */
 101                                 IEEE80211_MAX_FRAG_THRESHOLD;
 102                        if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 103                                printk(KERN_INFO "p54: rx_mtu reduced from %d "
 104                                       "to %d\n", priv->rx_mtu, maxlen);
 105                                priv->rx_mtu = maxlen;
 106                        }
 107                        break;
 108                        }
 109                case BR_CODE_EXPOSED_IF:
 110                        exp_if = (struct exp_if *) bootrec->data;
 111                        for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 112                                if (exp_if[i].if_id == cpu_to_le16(IF_ID_LMAC))
 113                                        priv->fw_var = le16_to_cpu(exp_if[i].variant);
 114                        break;
 115                case BR_CODE_DEPENDENT_IF:
 116                        break;
 117                case BR_CODE_END_OF_BRA:
 118                case LEGACY_BR_CODE_END_OF_BRA:
 119                        end_data = NULL;
 120                        break;
 121                default:
 122                        break;
 123                }
 124                bootrec = (struct bootrec *)&bootrec->data[len];
 125        }
 126
 127        if (fw_version) {
 128                wiphy_info(priv->hw->wiphy,
 129                           "FW rev %s - Softmac protocol %x.%x\n",
 130                           fw_version, priv->fw_var >> 8, priv->fw_var & 0xff);
 131                snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
 132                                "%s - %x.%x", fw_version,
 133                                priv->fw_var >> 8, priv->fw_var & 0xff);
 134        }
 135
 136        if (priv->fw_var < 0x500)
 137                wiphy_info(priv->hw->wiphy,
 138                           "you are using an obsolete firmware. "
 139                           "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 140                           "and grab one for \"kernel >= 2.6.28\"!\n");
 141
 142        if (priv->fw_var >= 0x300) {
 143                /* Firmware supports QoS, use it! */
 144
 145                if (priv->fw_var >= 0x500) {
 146                        priv->tx_stats[P54_QUEUE_AC_VO].limit = 16;
 147                        priv->tx_stats[P54_QUEUE_AC_VI].limit = 16;
 148                        priv->tx_stats[P54_QUEUE_AC_BE].limit = 16;
 149                        priv->tx_stats[P54_QUEUE_AC_BK].limit = 16;
 150                } else {
 151                        priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 152                        priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 153                        priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 154                        priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 155                }
 156                priv->hw->queues = P54_QUEUE_AC_NUM;
 157        }
 158
 159        wiphy_info(priv->hw->wiphy,
 160                   "cryptographic accelerator WEP:%s, TKIP:%s, CCMP:%s\n",
 161                   (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" : "no",
 162                   (priv->privacy_caps &
 163                    (BR_DESC_PRIV_CAP_TKIP | BR_DESC_PRIV_CAP_MICHAEL))
 164                   ? "YES" : "no",
 165                   (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)
 166                   ? "YES" : "no");
 167
 168        if (priv->rx_keycache_size) {
 169                /*
 170                 * NOTE:
 171                 *
 172                 * The firmware provides at most 255 (0 - 254) slots
 173                 * for keys which are then used to offload decryption.
 174                 * As a result the 255 entry (aka 0xff) can be used
 175                 * safely by the driver to mark keys that didn't fit
 176                 * into the full cache. This trick saves us from
 177                 * keeping a extra list for uploaded keys.
 178                 */
 179
 180                priv->used_rxkeys = kzalloc(BITS_TO_LONGS(
 181                        priv->rx_keycache_size), GFP_KERNEL);
 182
 183                if (!priv->used_rxkeys)
 184                        return -ENOMEM;
 185        }
 186
 187        return 0;
 188}
 189EXPORT_SYMBOL_GPL(p54_parse_firmware);
 190
 191static struct sk_buff *p54_alloc_skb(struct p54_common *priv, u16 hdr_flags,
 192                                     u16 payload_len, u16 type, gfp_t memflags)
 193{
 194        struct p54_hdr *hdr;
 195        struct sk_buff *skb;
 196        size_t frame_len = sizeof(*hdr) + payload_len;
 197
 198        if (frame_len > P54_MAX_CTRL_FRAME_LEN)
 199                return NULL;
 200
 201        if (unlikely(skb_queue_len(&priv->tx_pending) > 64))
 202                return NULL;
 203
 204        skb = __dev_alloc_skb(priv->tx_hdr_len + frame_len, memflags);
 205        if (!skb)
 206                return NULL;
 207        skb_reserve(skb, priv->tx_hdr_len);
 208
 209        hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
 210        hdr->flags = cpu_to_le16(hdr_flags);
 211        hdr->len = cpu_to_le16(payload_len);
 212        hdr->type = cpu_to_le16(type);
 213        hdr->tries = hdr->rts_tries = 0;
 214        return skb;
 215}
 216
 217int p54_download_eeprom(struct p54_common *priv, void *buf,
 218                        u16 offset, u16 len)
 219{
 220        struct p54_eeprom_lm86 *eeprom_hdr;
 221        struct sk_buff *skb;
 222        size_t eeprom_hdr_size;
 223        int ret = 0;
 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        if (!wait_for_completion_interruptible_timeout(
 254             &priv->eeprom_comp, HZ)) {
 255                wiphy_err(priv->hw->wiphy, "device does not respond!\n");
 256                ret = -EBUSY;
 257        }
 258        priv->eeprom = NULL;
 259        mutex_unlock(&priv->eeprom_mutex);
 260        return ret;
 261}
 262
 263int p54_update_beacon_tim(struct p54_common *priv, u16 aid, bool set)
 264{
 265        struct sk_buff *skb;
 266        struct p54_tim *tim;
 267
 268        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*tim),
 269                            P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
 270        if (unlikely(!skb))
 271                return -ENOMEM;
 272
 273        tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
 274        tim->count = 1;
 275        tim->entry[0] = cpu_to_le16(set ? (aid | 0x8000) : aid);
 276        p54_tx(priv, skb);
 277        return 0;
 278}
 279
 280int p54_sta_unlock(struct p54_common *priv, u8 *addr)
 281{
 282        struct sk_buff *skb;
 283        struct p54_sta_unlock *sta;
 284
 285        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*sta),
 286                            P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
 287        if (unlikely(!skb))
 288                return -ENOMEM;
 289
 290        sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
 291        memcpy(sta->addr, addr, ETH_ALEN);
 292        p54_tx(priv, skb);
 293        return 0;
 294}
 295
 296int p54_tx_cancel(struct p54_common *priv, __le32 req_id)
 297{
 298        struct sk_buff *skb;
 299        struct p54_txcancel *cancel;
 300        u32 _req_id = le32_to_cpu(req_id);
 301
 302        if (unlikely(_req_id < priv->rx_start || _req_id > priv->rx_end))
 303                return -EINVAL;
 304
 305        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*cancel),
 306                            P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
 307        if (unlikely(!skb))
 308                return -ENOMEM;
 309
 310        cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
 311        cancel->req_id = req_id;
 312        p54_tx(priv, skb);
 313        return 0;
 314}
 315
 316int p54_setup_mac(struct p54_common *priv)
 317{
 318        struct sk_buff *skb;
 319        struct p54_setup_mac *setup;
 320        u16 mode;
 321
 322        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup),
 323                            P54_CONTROL_TYPE_SETUP, GFP_ATOMIC);
 324        if (!skb)
 325                return -ENOMEM;
 326
 327        setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
 328        if (!(priv->hw->conf.flags & IEEE80211_CONF_IDLE)) {
 329                switch (priv->mode) {
 330                case NL80211_IFTYPE_STATION:
 331                        mode = P54_FILTER_TYPE_STATION;
 332                        break;
 333                case NL80211_IFTYPE_AP:
 334                        mode = P54_FILTER_TYPE_AP;
 335                        break;
 336                case NL80211_IFTYPE_ADHOC:
 337                case NL80211_IFTYPE_MESH_POINT:
 338                        mode = P54_FILTER_TYPE_IBSS;
 339                        break;
 340                case NL80211_IFTYPE_MONITOR:
 341                        mode = P54_FILTER_TYPE_PROMISCUOUS;
 342                        break;
 343                default:
 344                        mode = P54_FILTER_TYPE_HIBERNATE;
 345                        break;
 346                }
 347
 348                /*
 349                 * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
 350                 * STSW45X0C LMAC API - page 12
 351                 */
 352                if (((priv->filter_flags & FIF_PROMISC_IN_BSS) ||
 353                     (priv->filter_flags & FIF_OTHER_BSS)) &&
 354                    (mode != P54_FILTER_TYPE_PROMISCUOUS))
 355                        mode |= P54_FILTER_TYPE_TRANSPARENT;
 356        } else {
 357                mode = P54_FILTER_TYPE_HIBERNATE;
 358        }
 359
 360        setup->mac_mode = cpu_to_le16(mode);
 361        memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
 362        memcpy(setup->bssid, priv->bssid, ETH_ALEN);
 363        setup->rx_antenna = 2 & priv->rx_diversity_mask; /* automatic */
 364        setup->rx_align = 0;
 365        if (priv->fw_var < 0x500) {
 366                setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 367                memset(setup->v1.rts_rates, 0, 8);
 368                setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
 369                setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
 370                setup->v1.rxhw = cpu_to_le16(priv->rxhw);
 371                setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
 372                setup->v1.unalloc0 = cpu_to_le16(0);
 373        } else {
 374                setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
 375                setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
 376                setup->v2.rxhw = cpu_to_le16(priv->rxhw);
 377                setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
 378                setup->v2.truncate = cpu_to_le16(48896);
 379                setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 380                setup->v2.sbss_offset = 0;
 381                setup->v2.mcast_window = 0;
 382                setup->v2.rx_rssi_threshold = 0;
 383                setup->v2.rx_ed_threshold = 0;
 384                setup->v2.ref_clock = cpu_to_le32(644245094);
 385                setup->v2.lpf_bandwidth = cpu_to_le16(65535);
 386                setup->v2.osc_start_delay = cpu_to_le16(65535);
 387        }
 388        p54_tx(priv, skb);
 389        priv->phy_idle = mode == P54_FILTER_TYPE_HIBERNATE;
 390        return 0;
 391}
 392
 393int p54_scan(struct p54_common *priv, u16 mode, u16 dwell)
 394{
 395        struct sk_buff *skb;
 396        struct p54_hdr *hdr;
 397        struct p54_scan_head *head;
 398        struct p54_iq_autocal_entry *iq_autocal;
 399        union p54_scan_body_union *body;
 400        struct p54_scan_tail_rate *rate;
 401        struct pda_rssi_cal_entry *rssi;
 402        struct p54_rssi_db_entry *rssi_data;
 403        unsigned int i;
 404        void *entry;
 405        __le16 freq = cpu_to_le16(priv->hw->conf.channel->center_freq);
 406
 407        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*head) +
 408                            2 + sizeof(*iq_autocal) + sizeof(*body) +
 409                            sizeof(*rate) + 2 * sizeof(*rssi),
 410                            P54_CONTROL_TYPE_SCAN, GFP_ATOMIC);
 411        if (!skb)
 412                return -ENOMEM;
 413
 414        head = (struct p54_scan_head *) skb_put(skb, sizeof(*head));
 415        memset(head->scan_params, 0, sizeof(head->scan_params));
 416        head->mode = cpu_to_le16(mode);
 417        head->dwell = cpu_to_le16(dwell);
 418        head->freq = freq;
 419
 420        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 421                __le16 *pa_power_points = (__le16 *) skb_put(skb, 2);
 422                *pa_power_points = cpu_to_le16(0x0c);
 423        }
 424
 425        iq_autocal = (void *) skb_put(skb, sizeof(*iq_autocal));
 426        for (i = 0; i < priv->iq_autocal_len; i++) {
 427                if (priv->iq_autocal[i].freq != freq)
 428                        continue;
 429
 430                memcpy(iq_autocal, &priv->iq_autocal[i].params,
 431                       sizeof(struct p54_iq_autocal_entry));
 432                break;
 433        }
 434        if (i == priv->iq_autocal_len)
 435                goto err;
 436
 437        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW)
 438                body = (void *) skb_put(skb, sizeof(body->longbow));
 439        else
 440                body = (void *) skb_put(skb, sizeof(body->normal));
 441
 442        for (i = 0; i < priv->output_limit->entries; i++) {
 443                __le16 *entry_freq = (void *) (priv->output_limit->data +
 444                                     priv->output_limit->entry_size * i);
 445
 446                if (*entry_freq != freq)
 447                        continue;
 448
 449                if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 450                        memcpy(&body->longbow.power_limits,
 451                               (void *) entry_freq + sizeof(__le16),
 452                               priv->output_limit->entry_size);
 453                } else {
 454                        struct pda_channel_output_limit *limits =
 455                               (void *) entry_freq;
 456
 457                        body->normal.val_barker = 0x38;
 458                        body->normal.val_bpsk = body->normal.dup_bpsk =
 459                                limits->val_bpsk;
 460                        body->normal.val_qpsk = body->normal.dup_qpsk =
 461                                limits->val_qpsk;
 462                        body->normal.val_16qam = body->normal.dup_16qam =
 463                                limits->val_16qam;
 464                        body->normal.val_64qam = body->normal.dup_64qam =
 465                                limits->val_64qam;
 466                }
 467                break;
 468        }
 469        if (i == priv->output_limit->entries)
 470                goto err;
 471
 472        entry = (void *)(priv->curve_data->data + priv->curve_data->offset);
 473        for (i = 0; i < priv->curve_data->entries; i++) {
 474                if (*((__le16 *)entry) != freq) {
 475                        entry += priv->curve_data->entry_size;
 476                        continue;
 477                }
 478
 479                if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 480                        memcpy(&body->longbow.curve_data,
 481                                (void *) entry + sizeof(__le16),
 482                                priv->curve_data->entry_size);
 483                } else {
 484                        struct p54_scan_body *chan = &body->normal;
 485                        struct pda_pa_curve_data *curve_data =
 486                                (void *) priv->curve_data->data;
 487
 488                        entry += sizeof(__le16);
 489                        chan->pa_points_per_curve = 8;
 490                        memset(chan->curve_data, 0, sizeof(*chan->curve_data));
 491                        memcpy(chan->curve_data, entry,
 492                               sizeof(struct p54_pa_curve_data_sample) *
 493                               min((u8)8, curve_data->points_per_channel));
 494                }
 495                break;
 496        }
 497        if (i == priv->curve_data->entries)
 498                goto err;
 499
 500        if ((priv->fw_var >= 0x500) && (priv->fw_var < 0x509)) {
 501                rate = (void *) skb_put(skb, sizeof(*rate));
 502                rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 503                for (i = 0; i < sizeof(rate->rts_rates); i++)
 504                        rate->rts_rates[i] = i;
 505        }
 506
 507        rssi = (struct pda_rssi_cal_entry *) skb_put(skb, sizeof(*rssi));
 508        rssi_data = p54_rssi_find(priv, le16_to_cpu(freq));
 509        rssi->mul = cpu_to_le16(rssi_data->mul);
 510        rssi->add = cpu_to_le16(rssi_data->add);
 511        if (priv->rxhw == PDR_SYNTH_FRONTEND_LONGBOW) {
 512                /* Longbow frontend needs ever more */
 513                rssi = (void *) skb_put(skb, sizeof(*rssi));
 514                rssi->mul = cpu_to_le16(rssi_data->longbow_unkn);
 515                rssi->add = cpu_to_le16(rssi_data->longbow_unk2);
 516        }
 517
 518        if (priv->fw_var >= 0x509) {
 519                rate = (void *) skb_put(skb, sizeof(*rate));
 520                rate->basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
 521                for (i = 0; i < sizeof(rate->rts_rates); i++)
 522                        rate->rts_rates[i] = i;
 523        }
 524
 525        hdr = (struct p54_hdr *) skb->data;
 526        hdr->len = cpu_to_le16(skb->len - sizeof(*hdr));
 527
 528        p54_tx(priv, skb);
 529        priv->cur_rssi = rssi_data;
 530        return 0;
 531
 532err:
 533        wiphy_err(priv->hw->wiphy, "frequency change to channel %d failed.\n",
 534                  ieee80211_frequency_to_channel(
 535                          priv->hw->conf.channel->center_freq));
 536
 537        dev_kfree_skb_any(skb);
 538        return -EINVAL;
 539}
 540
 541int p54_set_leds(struct p54_common *priv)
 542{
 543        struct sk_buff *skb;
 544        struct p54_led *led;
 545
 546        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led),
 547                            P54_CONTROL_TYPE_LED, GFP_ATOMIC);
 548        if (unlikely(!skb))
 549                return -ENOMEM;
 550
 551        led = (struct p54_led *) skb_put(skb, sizeof(*led));
 552        led->flags = cpu_to_le16(0x0003);
 553        led->mask[0] = led->mask[1] = cpu_to_le16(priv->softled_state);
 554        led->delay[0] = cpu_to_le16(1);
 555        led->delay[1] = cpu_to_le16(0);
 556        p54_tx(priv, skb);
 557        return 0;
 558}
 559
 560int p54_set_edcf(struct p54_common *priv)
 561{
 562        struct sk_buff *skb;
 563        struct p54_edcf *edcf;
 564        u8 rtd;
 565
 566        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf),
 567                            P54_CONTROL_TYPE_DCFINIT, GFP_ATOMIC);
 568        if (unlikely(!skb))
 569                return -ENOMEM;
 570
 571        edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
 572        if (priv->use_short_slot) {
 573                edcf->slottime = 9;
 574                edcf->sifs = 0x10;
 575                edcf->eofpad = 0x00;
 576        } else {
 577                edcf->slottime = 20;
 578                edcf->sifs = 0x0a;
 579                edcf->eofpad = 0x06;
 580        }
 581        /*
 582         * calculate the extra round trip delay according to the
 583         * formula from 802.11-2007 17.3.8.6.
 584         */
 585        rtd = 3 * priv->coverage_class;
 586        edcf->slottime += rtd;
 587        edcf->round_trip_delay = cpu_to_le16(rtd);
 588        /* (see prism54/isl_oid.h for further details) */
 589        edcf->frameburst = cpu_to_le16(0);
 590        edcf->flags = 0;
 591        memset(edcf->mapping, 0, sizeof(edcf->mapping));
 592        memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
 593        p54_tx(priv, skb);
 594        return 0;
 595}
 596
 597int p54_set_ps(struct p54_common *priv)
 598{
 599        struct sk_buff *skb;
 600        struct p54_psm *psm;
 601        unsigned int i;
 602        u16 mode;
 603
 604        if (priv->hw->conf.flags & IEEE80211_CONF_PS &&
 605            !priv->powersave_override)
 606                mode = P54_PSM | P54_PSM_BEACON_TIMEOUT | P54_PSM_DTIM |
 607                       P54_PSM_CHECKSUM | P54_PSM_MCBC;
 608        else
 609                mode = P54_PSM_CAM;
 610
 611        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm),
 612                            P54_CONTROL_TYPE_PSM, GFP_ATOMIC);
 613        if (!skb)
 614                return -ENOMEM;
 615
 616        psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
 617        psm->mode = cpu_to_le16(mode);
 618        psm->aid = cpu_to_le16(priv->aid);
 619        for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
 620                psm->intervals[i].interval =
 621                        cpu_to_le16(priv->hw->conf.listen_interval);
 622                psm->intervals[i].periods = cpu_to_le16(1);
 623        }
 624
 625        psm->beacon_rssi_skip_max = 200;
 626        psm->rssi_delta_threshold = 0;
 627        psm->nr = 1;
 628        psm->exclude[0] = WLAN_EID_TIM;
 629
 630        p54_tx(priv, skb);
 631        priv->phy_ps = mode != P54_PSM_CAM;
 632        return 0;
 633}
 634
 635int p54_init_xbow_synth(struct p54_common *priv)
 636{
 637        struct sk_buff *skb;
 638        struct p54_xbow_synth *xbow;
 639
 640        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow),
 641                            P54_CONTROL_TYPE_XBOW_SYNTH_CFG, GFP_KERNEL);
 642        if (unlikely(!skb))
 643                return -ENOMEM;
 644
 645        xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
 646        xbow->magic1 = cpu_to_le16(0x1);
 647        xbow->magic2 = cpu_to_le16(0x2);
 648        xbow->freq = cpu_to_le16(5390);
 649        memset(xbow->padding, 0, sizeof(xbow->padding));
 650        p54_tx(priv, skb);
 651        return 0;
 652}
 653
 654int p54_upload_key(struct p54_common *priv, u8 algo, int slot, u8 idx, u8 len,
 655                   u8 *addr, u8* key)
 656{
 657        struct sk_buff *skb;
 658        struct p54_keycache *rxkey;
 659
 660        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey),
 661                            P54_CONTROL_TYPE_RX_KEYCACHE, GFP_KERNEL);
 662        if (unlikely(!skb))
 663                return -ENOMEM;
 664
 665        rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
 666        rxkey->entry = slot;
 667        rxkey->key_id = idx;
 668        rxkey->key_type = algo;
 669        if (addr)
 670                memcpy(rxkey->mac, addr, ETH_ALEN);
 671        else
 672                memset(rxkey->mac, ~0, ETH_ALEN);
 673
 674        switch (algo) {
 675        case P54_CRYPTO_WEP:
 676        case P54_CRYPTO_AESCCMP:
 677                rxkey->key_len = min_t(u8, 16, len);
 678                memcpy(rxkey->key, key, rxkey->key_len);
 679                break;
 680
 681        case P54_CRYPTO_TKIPMICHAEL:
 682                rxkey->key_len = 24;
 683                memcpy(rxkey->key, key, 16);
 684                memcpy(&(rxkey->key[16]), &(key
 685                        [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
 686                break;
 687
 688        case P54_CRYPTO_NONE:
 689                rxkey->key_len = 0;
 690                memset(rxkey->key, 0, sizeof(rxkey->key));
 691                break;
 692
 693        default:
 694                wiphy_err(priv->hw->wiphy,
 695                          "invalid cryptographic algorithm: %d\n", algo);
 696                dev_kfree_skb(skb);
 697                return -EINVAL;
 698        }
 699
 700        p54_tx(priv, skb);
 701        return 0;
 702}
 703
 704int p54_fetch_statistics(struct p54_common *priv)
 705{
 706        struct ieee80211_tx_info *txinfo;
 707        struct p54_tx_info *p54info;
 708        struct sk_buff *skb;
 709
 710        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL,
 711                            sizeof(struct p54_statistics),
 712                            P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
 713        if (!skb)
 714                return -ENOMEM;
 715
 716        /*
 717         * The statistic feedback causes some extra headaches here, if it
 718         * is not to crash/corrupt the firmware data structures.
 719         *
 720         * Unlike all other Control Get OIDs we can not use helpers like
 721         * skb_put to reserve the space for the data we're requesting.
 722         * Instead the extra frame length -which will hold the results later-
 723         * will only be told to the p54_assign_address, so that following
 724         * frames won't be placed into the  allegedly empty area.
 725         */
 726        txinfo = IEEE80211_SKB_CB(skb);
 727        p54info = (void *) txinfo->rate_driver_data;
 728        p54info->extra_len = sizeof(struct p54_statistics);
 729
 730        p54_tx(priv, skb);
 731        return 0;
 732}
 733
 734int p54_set_groupfilter(struct p54_common *priv)
 735{
 736        struct p54_group_address_table *grp;
 737        struct sk_buff *skb;
 738        bool on = false;
 739
 740        skb = p54_alloc_skb(priv, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*grp),
 741                            P54_CONTROL_TYPE_GROUP_ADDRESS_TABLE, GFP_KERNEL);
 742        if (!skb)
 743                return -ENOMEM;
 744
 745        grp = (struct p54_group_address_table *)skb_put(skb, sizeof(*grp));
 746
 747        on = !(priv->filter_flags & FIF_ALLMULTI) &&
 748             (priv->mc_maclist_num > 0 &&
 749              priv->mc_maclist_num <= MC_FILTER_ADDRESS_NUM);
 750
 751        if (on) {
 752                grp->filter_enable = cpu_to_le16(1);
 753                grp->num_address = cpu_to_le16(priv->mc_maclist_num);
 754                memcpy(grp->mac_list, priv->mc_maclist, sizeof(grp->mac_list));
 755        } else {
 756                grp->filter_enable = cpu_to_le16(0);
 757                grp->num_address = cpu_to_le16(0);
 758                memset(grp->mac_list, 0, sizeof(grp->mac_list));
 759        }
 760
 761        p54_tx(priv, skb);
 762        return 0;
 763}
 764