drivers/net/wireless/st/cw1200/main.c

   1 /*
   2  * mac80211 glue code for mac80211 ST-Ericsson CW1200 drivers
   3  *
   4  * Copyright (c) 2010, ST-Ericsson
   5  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6  *
   7  * Based on:
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de>
  10  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
  11  *
  12  * Based on:
  13  * - the islsm (softmac prism54) driver, which is:
  14  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  15  * - stlc45xx driver
  16  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  17  *
  18  * This program is free software; you can redistribute it and/or modify
  19  * it under the terms of the GNU General Public License version 2 as
  20  * published by the Free Software Foundation.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/firmware.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/vmalloc.h>
  27 #include <linux/random.h>
  28 #include <linux/sched.h>
  29 #include <net/mac80211.h>
  30
  31 #include "cw1200.h"
  32 #include "txrx.h"
  33 #include "hwbus.h"
  34 #include "fwio.h"
  35 #include "hwio.h"
  36 #include "bh.h"
  37 #include "sta.h"
  38 #include "scan.h"
  39 #include "debug.h"
  40 #include "pm.h"
  41
  42 MODULE_AUTHOR("Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>");
  43 MODULE_DESCRIPTION("Softmac ST-Ericsson CW1200 common code");
  44 MODULE_LICENSE("GPL");
  45 MODULE_ALIAS("cw1200_core");
  46
  47 /* Accept MAC address of the form macaddr=0x00,0x80,0xE1,0x30,0x40,0x50 */
  48 static u8 cw1200_mac_template[ETH_ALEN] = {0x02, 0x80, 0xe1, 0x00, 0x00, 0x00};
  49 module_param_array_named(macaddr, cw1200_mac_template, byte, NULL, 0444);
  50 MODULE_PARM_DESC(macaddr, "Override platform_data MAC address");
  51
  52 static char *cw1200_sdd_path;
  53 module_param(cw1200_sdd_path, charp, 0644);
  54 MODULE_PARM_DESC(cw1200_sdd_path, "Override platform_data SDD file");
  55 static int cw1200_refclk;
  56 module_param(cw1200_refclk, int, 0644);
  57 MODULE_PARM_DESC(cw1200_refclk, "Override platform_data reference clock");
  58
  59 int cw1200_power_mode = wsm_power_mode_quiescent;
  60 module_param(cw1200_power_mode, int, 0644);
  61 MODULE_PARM_DESC(cw1200_power_mode, "WSM power mode.  0 == active, 1 == doze, 2 == quiescent (default)");
  62
  63 #define RATETAB_ENT(_rate, _rateid, _flags)             \
  64         {                                               \
  65                 .bitrate        = (_rate),              \
  66                 .hw_value       = (_rateid),            \
  67                 .flags          = (_flags),             \
  68         }
  69
  70 static struct ieee80211_rate cw1200_rates[] = {
  71         RATETAB_ENT(10,  0,   0),
  72         RATETAB_ENT(20,  1,   0),
  73         RATETAB_ENT(55,  2,   0),
  74         RATETAB_ENT(110, 3,   0),
  75         RATETAB_ENT(60,  6,  0),
  76         RATETAB_ENT(90,  7,  0),
  77         RATETAB_ENT(120, 8,  0),
  78         RATETAB_ENT(180, 9,  0),
  79         RATETAB_ENT(240, 10, 0),
  80         RATETAB_ENT(360, 11, 0),
  81         RATETAB_ENT(480, 12, 0),
  82         RATETAB_ENT(540, 13, 0),
  83 };
  84
  85 static struct ieee80211_rate cw1200_mcs_rates[] = {
  86         RATETAB_ENT(65,  14, IEEE80211_TX_RC_MCS),
  87         RATETAB_ENT(130, 15, IEEE80211_TX_RC_MCS),
  88         RATETAB_ENT(195, 16, IEEE80211_TX_RC_MCS),
  89         RATETAB_ENT(260, 17, IEEE80211_TX_RC_MCS),
  90         RATETAB_ENT(390, 18, IEEE80211_TX_RC_MCS),
  91         RATETAB_ENT(520, 19, IEEE80211_TX_RC_MCS),
  92         RATETAB_ENT(585, 20, IEEE80211_TX_RC_MCS),
  93         RATETAB_ENT(650, 21, IEEE80211_TX_RC_MCS),
  94 };
  95
  96 #define cw1200_a_rates          (cw1200_rates + 4)
  97 #define cw1200_a_rates_size     (ARRAY_SIZE(cw1200_rates) - 4)
  98 #define cw1200_g_rates          (cw1200_rates + 0)
  99 #define cw1200_g_rates_size     (ARRAY_SIZE(cw1200_rates))
 100 #define cw1200_n_rates          (cw1200_mcs_rates)
 101 #define cw1200_n_rates_size     (ARRAY_SIZE(cw1200_mcs_rates))
 102
 103
 104 #define CHAN2G(_channel, _freq, _flags) {                       \
 105         .band                   = NL80211_BAND_2GHZ,            \
 106         .center_freq            = (_freq),                      \
 107         .hw_value               = (_channel),                   \
 108         .flags                  = (_flags),                     \
 109         .max_antenna_gain       = 0,                            \
 110         .max_power              = 30,                           \
 111 }
 112
 113 #define CHAN5G(_channel, _flags) {                              \
 114         .band                   = NL80211_BAND_5GHZ,            \
 115         .center_freq    = 5000 + (5 * (_channel)),              \
 116         .hw_value               = (_channel),                   \
 117         .flags                  = (_flags),                     \
 118         .max_antenna_gain       = 0,                            \
 119         .max_power              = 30,                           \
 120 }
 121
 122 static struct ieee80211_channel cw1200_2ghz_chantable[] = {
 123         CHAN2G(1, 2412, 0),
 124         CHAN2G(2, 2417, 0),
 125         CHAN2G(3, 2422, 0),
 126         CHAN2G(4, 2427, 0),
 127         CHAN2G(5, 2432, 0),
 128         CHAN2G(6, 2437, 0),
 129         CHAN2G(7, 2442, 0),
 130         CHAN2G(8, 2447, 0),
 131         CHAN2G(9, 2452, 0),
 132         CHAN2G(10, 2457, 0),
 133         CHAN2G(11, 2462, 0),
 134         CHAN2G(12, 2467, 0),
 135         CHAN2G(13, 2472, 0),
 136         CHAN2G(14, 2484, 0),
 137 };
 138
 139 static struct ieee80211_channel cw1200_5ghz_chantable[] = {
 140         CHAN5G(34, 0),          CHAN5G(36, 0),
 141         CHAN5G(38, 0),          CHAN5G(40, 0),
 142         CHAN5G(42, 0),          CHAN5G(44, 0),
 143         CHAN5G(46, 0),          CHAN5G(48, 0),
 144         CHAN5G(52, 0),          CHAN5G(56, 0),
 145         CHAN5G(60, 0),          CHAN5G(64, 0),
 146         CHAN5G(100, 0),         CHAN5G(104, 0),
 147         CHAN5G(108, 0),         CHAN5G(112, 0),
 148         CHAN5G(116, 0),         CHAN5G(120, 0),
 149         CHAN5G(124, 0),         CHAN5G(128, 0),
 150         CHAN5G(132, 0),         CHAN5G(136, 0),
 151         CHAN5G(140, 0),         CHAN5G(149, 0),
 152         CHAN5G(153, 0),         CHAN5G(157, 0),
 153         CHAN5G(161, 0),         CHAN5G(165, 0),
 154         CHAN5G(184, 0),         CHAN5G(188, 0),
 155         CHAN5G(192, 0),         CHAN5G(196, 0),
 156         CHAN5G(200, 0),         CHAN5G(204, 0),
 157         CHAN5G(208, 0),         CHAN5G(212, 0),
 158         CHAN5G(216, 0),
 159 };
 160
 161 static struct ieee80211_supported_band cw1200_band_2ghz = {
 162         .channels = cw1200_2ghz_chantable,
 163         .n_channels = ARRAY_SIZE(cw1200_2ghz_chantable),
 164         .bitrates = cw1200_g_rates,
 165         .n_bitrates = cw1200_g_rates_size,
 166         .ht_cap = {
 167                 .cap = IEEE80211_HT_CAP_GRN_FLD |
 168                         (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
 169                         IEEE80211_HT_CAP_MAX_AMSDU,
 170                 .ht_supported = 1,
 171                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
 172                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
 173                 .mcs = {
 174                         .rx_mask[0] = 0xFF,
 175                         .rx_highest = __cpu_to_le16(0x41),
 176                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 177                 },
 178         },
 179 };
 180
 181 static struct ieee80211_supported_band cw1200_band_5ghz = {
 182         .channels = cw1200_5ghz_chantable,
 183         .n_channels = ARRAY_SIZE(cw1200_5ghz_chantable),
 184         .bitrates = cw1200_a_rates,
 185         .n_bitrates = cw1200_a_rates_size,
 186         .ht_cap = {
 187                 .cap = IEEE80211_HT_CAP_GRN_FLD |
 188                         (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT) |
 189                         IEEE80211_HT_CAP_MAX_AMSDU,
 190                 .ht_supported = 1,
 191                 .ampdu_factor = IEEE80211_HT_MAX_AMPDU_8K,
 192                 .ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE,
 193                 .mcs = {
 194                         .rx_mask[0] = 0xFF,
 195                         .rx_highest = __cpu_to_le16(0x41),
 196                         .tx_params = IEEE80211_HT_MCS_TX_DEFINED,
 197                 },
 198         },
 199 };
 200
 201 static const unsigned long cw1200_ttl[] = {
 202         1 * HZ, /* VO */
 203         2 * HZ, /* VI */
 204         5 * HZ, /* BE */
 205         10 * HZ /* BK */
 206 };
 207
 208 static const struct ieee80211_ops cw1200_ops = {
 209         .start                  = cw1200_start,
 210         .stop                   = cw1200_stop,
 211         .add_interface          = cw1200_add_interface,
 212         .remove_interface       = cw1200_remove_interface,
 213         .change_interface       = cw1200_change_interface,
 214         .tx                     = cw1200_tx,
 215         .hw_scan                = cw1200_hw_scan,
 216         .set_tim                = cw1200_set_tim,
 217         .sta_notify             = cw1200_sta_notify,
 218         .sta_add                = cw1200_sta_add,
 219         .sta_remove             = cw1200_sta_remove,
 220         .set_key                = cw1200_set_key,
 221         .set_rts_threshold      = cw1200_set_rts_threshold,
 222         .config                 = cw1200_config,
 223         .bss_info_changed       = cw1200_bss_info_changed,
 224         .prepare_multicast      = cw1200_prepare_multicast,
 225         .configure_filter       = cw1200_configure_filter,
 226         .conf_tx                = cw1200_conf_tx,
 227         .get_stats              = cw1200_get_stats,
 228         .ampdu_action           = cw1200_ampdu_action,
 229         .flush                  = cw1200_flush,
 230 #ifdef CONFIG_PM
 231         .suspend                = cw1200_wow_suspend,
 232         .resume                 = cw1200_wow_resume,
 233 #endif
 234         /* Intentionally not offloaded:                                 */
 235         /*.channel_switch       = cw1200_channel_switch,                */
 236         /*.remain_on_channel    = cw1200_remain_on_channel,             */
 237         /*.cancel_remain_on_channel = cw1200_cancel_remain_on_channel,  */
 238 };
 239
 240 static int cw1200_ba_rx_tids = -1;
 241 static int cw1200_ba_tx_tids = -1;
 242 module_param(cw1200_ba_rx_tids, int, 0644);
 243 module_param(cw1200_ba_tx_tids, int, 0644);
 244 MODULE_PARM_DESC(cw1200_ba_rx_tids, "Block ACK RX TIDs");
 245 MODULE_PARM_DESC(cw1200_ba_tx_tids, "Block ACK TX TIDs");
 246
 247 #ifdef CONFIG_PM
 248 static const struct wiphy_wowlan_support cw1200_wowlan_support = {
 249         /* Support only for limited wowlan functionalities */
 250         .flags = WIPHY_WOWLAN_ANY | WIPHY_WOWLAN_DISCONNECT,
 251 };
 252 #endif
 253
 254
 255 static struct ieee80211_hw *cw1200_init_common(const u8 *macaddr,
 256                                                 const bool have_5ghz)
 257 {
 258         int i, band;
 259         struct ieee80211_hw *hw;
 260         struct cw1200_common *priv;
 261
 262         hw = ieee80211_alloc_hw(sizeof(struct cw1200_common), &cw1200_ops);
 263         if (!hw)
 264                 return NULL;
 265
 266         priv = hw->priv;
 267         priv->hw = hw;
 268         priv->hw_type = -1;
 269         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 270         priv->rates = cw1200_rates; /* TODO: fetch from FW */
 271         priv->mcs_rates = cw1200_n_rates;
 272         if (cw1200_ba_rx_tids != -1)
 273                 priv->ba_rx_tid_mask = cw1200_ba_rx_tids;
 274         else
 275                 priv->ba_rx_tid_mask = 0xFF; /* Enable RX BLKACK for all TIDs */
 276         if (cw1200_ba_tx_tids != -1)
 277                 priv->ba_tx_tid_mask = cw1200_ba_tx_tids;
 278         else
 279                 priv->ba_tx_tid_mask = 0xff; /* Enable TX BLKACK for all TIDs */
 280
 281         ieee80211_hw_set(hw, NEED_DTIM_BEFORE_ASSOC);
 282         ieee80211_hw_set(hw, TX_AMPDU_SETUP_IN_HW);
 283         ieee80211_hw_set(hw, AMPDU_AGGREGATION);
 284         ieee80211_hw_set(hw, CONNECTION_MONITOR);
 285         ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
 286         ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
 287         ieee80211_hw_set(hw, SIGNAL_DBM);
 288         ieee80211_hw_set(hw, SUPPORTS_PS);
 289
 290         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 291                                           BIT(NL80211_IFTYPE_ADHOC) |
 292                                           BIT(NL80211_IFTYPE_AP) |
 293                                           BIT(NL80211_IFTYPE_MESH_POINT) |
 294                                           BIT(NL80211_IFTYPE_P2P_CLIENT) |
 295                                           BIT(NL80211_IFTYPE_P2P_GO);
 296
 297 #ifdef CONFIG_PM
 298         hw->wiphy->wowlan = &cw1200_wowlan_support;
 299 #endif
 300
 301         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 302
 303         hw->queues = 4;
 304
 305         priv->rts_threshold = -1;
 306
 307         hw->max_rates = 8;
 308         hw->max_rate_tries = 15;
 309         hw->extra_tx_headroom = WSM_TX_EXTRA_HEADROOM +
 310                 8;  /* TKIP IV */
 311
 312         hw->sta_data_size = sizeof(struct cw1200_sta_priv);
 313
 314         hw->wiphy->bands[NL80211_BAND_2GHZ] = &cw1200_band_2ghz;
 315         if (have_5ghz)
 316                 hw->wiphy->bands[NL80211_BAND_5GHZ] = &cw1200_band_5ghz;
 317
 318         /* Channel params have to be cleared before registering wiphy again */
 319         for (band = 0; band < NUM_NL80211_BANDS; band++) {
 320                 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
 321                 if (!sband)
 322                         continue;
 323                 for (i = 0; i < sband->n_channels; i++) {
 324                         sband->channels[i].flags = 0;
 325                         sband->channels[i].max_antenna_gain = 0;
 326                         sband->channels[i].max_power = 30;
 327                 }
 328         }
 329
 330         hw->wiphy->max_scan_ssids = 2;
 331         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
 332
 333         if (macaddr)
 334                 SET_IEEE80211_PERM_ADDR(hw, (u8 *)macaddr);
 335         else
 336                 SET_IEEE80211_PERM_ADDR(hw, cw1200_mac_template);
 337
 338         /* Fix up mac address if necessary */
 339         if (hw->wiphy->perm_addr[3] == 0 &&
 340             hw->wiphy->perm_addr[4] == 0 &&
 341             hw->wiphy->perm_addr[5] == 0) {
 342                 get_random_bytes(&hw->wiphy->perm_addr[3], 3);
 343         }
 344
 345         mutex_init(&priv->wsm_cmd_mux);
 346         mutex_init(&priv->conf_mutex);
 347         priv->workqueue = create_singlethread_workqueue("cw1200_wq");
 348         if (!priv->workqueue) {
 349                 ieee80211_free_hw(hw);
 350                 return NULL;
 351         }
 352
 353         sema_init(&priv->scan.lock, 1);
 354         INIT_WORK(&priv->scan.work, cw1200_scan_work);
 355         INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work);
 356         INIT_DELAYED_WORK(&priv->scan.timeout, cw1200_scan_timeout);
 357         INIT_DELAYED_WORK(&priv->clear_recent_scan_work,
 358                           cw1200_clear_recent_scan_work);
 359         INIT_DELAYED_WORK(&priv->join_timeout, cw1200_join_timeout);
 360         INIT_WORK(&priv->unjoin_work, cw1200_unjoin_work);
 361         INIT_WORK(&priv->join_complete_work, cw1200_join_complete_work);
 362         INIT_WORK(&priv->wep_key_work, cw1200_wep_key_work);
 363         INIT_WORK(&priv->tx_policy_upload_work, tx_policy_upload_work);
 364         spin_lock_init(&priv->event_queue_lock);
 365         INIT_LIST_HEAD(&priv->event_queue);
 366         INIT_WORK(&priv->event_handler, cw1200_event_handler);
 367         INIT_DELAYED_WORK(&priv->bss_loss_work, cw1200_bss_loss_work);
 368         INIT_WORK(&priv->bss_params_work, cw1200_bss_params_work);
 369         spin_lock_init(&priv->bss_loss_lock);
 370         spin_lock_init(&priv->ps_state_lock);
 371         INIT_WORK(&priv->set_cts_work, cw1200_set_cts_work);
 372         INIT_WORK(&priv->set_tim_work, cw1200_set_tim_work);
 373         INIT_WORK(&priv->multicast_start_work, cw1200_multicast_start_work);
 374         INIT_WORK(&priv->multicast_stop_work, cw1200_multicast_stop_work);
 375         INIT_WORK(&priv->link_id_work, cw1200_link_id_work);
 376         INIT_DELAYED_WORK(&priv->link_id_gc_work, cw1200_link_id_gc_work);
 377         INIT_WORK(&priv->linkid_reset_work, cw1200_link_id_reset);
 378         INIT_WORK(&priv->update_filtering_work, cw1200_update_filtering_work);
 379         INIT_WORK(&priv->set_beacon_wakeup_period_work,
 380                   cw1200_set_beacon_wakeup_period_work);
 381         timer_setup(&priv->mcast_timeout, cw1200_mcast_timeout, 0);
 382
 383         if (cw1200_queue_stats_init(&priv->tx_queue_stats,
 384                                     CW1200_LINK_ID_MAX,
 385                                     cw1200_skb_dtor,
 386                                     priv)) {
 387                 destroy_workqueue(priv->workqueue);
 388                 ieee80211_free_hw(hw);
 389                 return NULL;
 390         }
 391
 392         for (i = 0; i < 4; ++i) {
 393                 if (cw1200_queue_init(&priv->tx_queue[i],
 394                                       &priv->tx_queue_stats, i, 16,
 395                                       cw1200_ttl[i])) {
 396                         for (; i > 0; i--)
 397                                 cw1200_queue_deinit(&priv->tx_queue[i - 1]);
 398                         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 399                         destroy_workqueue(priv->workqueue);
 400                         ieee80211_free_hw(hw);
 401                         return NULL;
 402                 }
 403         }
 404
 405         init_waitqueue_head(&priv->channel_switch_done);
 406         init_waitqueue_head(&priv->wsm_cmd_wq);
 407         init_waitqueue_head(&priv->wsm_startup_done);
 408         init_waitqueue_head(&priv->ps_mode_switch_done);
 409         wsm_buf_init(&priv->wsm_cmd_buf);
 410         spin_lock_init(&priv->wsm_cmd.lock);
 411         priv->wsm_cmd.done = 1;
 412         tx_policy_init(priv);
 413
 414         return hw;
 415 }
 416
 417 static int cw1200_register_common(struct ieee80211_hw *dev)
 418 {
 419         struct cw1200_common *priv = dev->priv;
 420         int err;
 421
 422 #ifdef CONFIG_PM
 423         err = cw1200_pm_init(&priv->pm_state, priv);
 424         if (err) {
 425                 pr_err("Cannot init PM. (%d).\n",
 426                        err);
 427                 return err;
 428         }
 429 #endif
 430
 431         err = ieee80211_register_hw(dev);
 432         if (err) {
 433                 pr_err("Cannot register device (%d).\n",
 434                        err);
 435 #ifdef CONFIG_PM
 436                 cw1200_pm_deinit(&priv->pm_state);
 437 #endif
 438                 return err;
 439         }
 440
 441         cw1200_debug_init(priv);
 442
 443         pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
 444         return 0;
 445 }
 446
 447 static void cw1200_free_common(struct ieee80211_hw *dev)
 448 {
 449         ieee80211_free_hw(dev);
 450 }
 451
 452 static void cw1200_unregister_common(struct ieee80211_hw *dev)
 453 {
 454         struct cw1200_common *priv = dev->priv;
 455         int i;
 456
 457         ieee80211_unregister_hw(dev);
 458
 459         del_timer_sync(&priv->mcast_timeout);
 460         cw1200_unregister_bh(priv);
 461
 462         cw1200_debug_release(priv);
 463
 464         mutex_destroy(&priv->conf_mutex);
 465
 466         wsm_buf_deinit(&priv->wsm_cmd_buf);
 467
 468         destroy_workqueue(priv->workqueue);
 469         priv->workqueue = NULL;
 470
 471         if (priv->sdd) {
 472                 release_firmware(priv->sdd);
 473                 priv->sdd = NULL;
 474         }
 475
 476         for (i = 0; i < 4; ++i)
 477                 cw1200_queue_deinit(&priv->tx_queue[i]);
 478
 479         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 480 #ifdef CONFIG_PM
 481         cw1200_pm_deinit(&priv->pm_state);
 482 #endif
 483 }
 484
 485 /* Clock is in KHz */
 486 u32 cw1200_dpll_from_clk(u16 clk_khz)
 487 {
 488         switch (clk_khz) {
 489         case 0x32C8: /* 13000 KHz */
 490                 return 0x1D89D241;
 491         case 0x3E80: /* 16000 KHz */
 492                 return 0x000001E1;
 493         case 0x41A0: /* 16800 KHz */
 494                 return 0x124931C1;
 495         case 0x4B00: /* 19200 KHz */
 496                 return 0x00000191;
 497         case 0x5DC0: /* 24000 KHz */
 498                 return 0x00000141;
 499         case 0x6590: /* 26000 KHz */
 500                 return 0x0EC4F121;
 501         case 0x8340: /* 33600 KHz */
 502                 return 0x092490E1;
 503         case 0x9600: /* 38400 KHz */
 504                 return 0x100010C1;
 505         case 0x9C40: /* 40000 KHz */
 506                 return 0x000000C1;
 507         case 0xBB80: /* 48000 KHz */
 508                 return 0x000000A1;
 509         case 0xCB20: /* 52000 KHz */
 510                 return 0x07627091;
 511         default:
 512                 pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
 513                        clk_khz);
 514                 return 0x0EC4F121;
 515         }
 516 }
 517
 518 int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
 519                       struct hwbus_priv *hwbus,
 520                       struct device *pdev,
 521                       struct cw1200_common **core,
 522                       int ref_clk, const u8 *macaddr,
 523                       const char *sdd_path, bool have_5ghz)
 524 {
 525         int err = -EINVAL;
 526         struct ieee80211_hw *dev;
 527         struct cw1200_common *priv;
 528         struct wsm_operational_mode mode = {
 529                 .power_mode = cw1200_power_mode,
 530                 .disable_more_flag_usage = true,
 531         };
 532
 533         dev = cw1200_init_common(macaddr, have_5ghz);
 534         if (!dev)
 535                 goto err;
 536
 537         priv = dev->priv;
 538         priv->hw_refclk = ref_clk;
 539         if (cw1200_refclk)
 540                 priv->hw_refclk = cw1200_refclk;
 541
 542         priv->sdd_path = (char *)sdd_path;
 543         if (cw1200_sdd_path)
 544                 priv->sdd_path = cw1200_sdd_path;
 545
 546         priv->hwbus_ops = hwbus_ops;
 547         priv->hwbus_priv = hwbus;
 548         priv->pdev = pdev;
 549         SET_IEEE80211_DEV(priv->hw, pdev);
 550
 551         /* Pass struct cw1200_common back up */
 552         *core = priv;
 553
 554         err = cw1200_register_bh(priv);
 555         if (err)
 556                 goto err1;
 557
 558         err = cw1200_load_firmware(priv);
 559         if (err)
 560                 goto err2;
 561
 562         if (wait_event_interruptible_timeout(priv->wsm_startup_done,
 563                                              priv->firmware_ready,
 564                                              3*HZ) <= 0) {
 565                 /* TODO: Need to find how to reset device
 566                    in QUEUE mode properly.
 567                 */
 568                 pr_err("Timeout waiting on device startup\n");
 569                 err = -ETIMEDOUT;
 570                 goto err2;
 571         }
 572
 573         /* Set low-power mode. */
 574         wsm_set_operational_mode(priv, &mode);
 575
 576         /* Enable multi-TX confirmation */
 577         wsm_use_multi_tx_conf(priv, true);
 578
 579         err = cw1200_register_common(dev);
 580         if (err)
 581                 goto err2;
 582
 583         return err;
 584
 585 err2:
 586         cw1200_unregister_bh(priv);
 587 err1:
 588         cw1200_free_common(dev);
 589 err:
 590         *core = NULL;
 591         return err;
 592 }
 593 EXPORT_SYMBOL_GPL(cw1200_core_probe);
 594
 595 void cw1200_core_release(struct cw1200_common *self)
 596 {
 597         /* Disable device interrupts */
 598         self->hwbus_ops->lock(self->hwbus_priv);
 599         __cw1200_irq_enable(self, 0);
 600         self->hwbus_ops->unlock(self->hwbus_priv);
 601
 602         /* And then clean up */
 603         cw1200_unregister_common(self->hw);
 604         cw1200_free_common(self->hw);
 605         return;
 606 }
 607 EXPORT_SYMBOL_GPL(cw1200_core_release);