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                 ieee80211_free_hw(hw);
 388                 return NULL;
 389         }
 390
 391         for (i = 0; i < 4; ++i) {
 392                 if (cw1200_queue_init(&priv->tx_queue[i],
 393                                       &priv->tx_queue_stats, i, 16,
 394                                       cw1200_ttl[i])) {
 395                         for (; i > 0; i--)
 396                                 cw1200_queue_deinit(&priv->tx_queue[i - 1]);
 397                         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 398                         ieee80211_free_hw(hw);
 399                         return NULL;
 400                 }
 401         }
 402
 403         init_waitqueue_head(&priv->channel_switch_done);
 404         init_waitqueue_head(&priv->wsm_cmd_wq);
 405         init_waitqueue_head(&priv->wsm_startup_done);
 406         init_waitqueue_head(&priv->ps_mode_switch_done);
 407         wsm_buf_init(&priv->wsm_cmd_buf);
 408         spin_lock_init(&priv->wsm_cmd.lock);
 409         priv->wsm_cmd.done = 1;
 410         tx_policy_init(priv);
 411
 412         return hw;
 413 }
 414
 415 static int cw1200_register_common(struct ieee80211_hw *dev)
 416 {
 417         struct cw1200_common *priv = dev->priv;
 418         int err;
 419
 420 #ifdef CONFIG_PM
 421         err = cw1200_pm_init(&priv->pm_state, priv);
 422         if (err) {
 423                 pr_err("Cannot init PM. (%d).\n",
 424                        err);
 425                 return err;
 426         }
 427 #endif
 428
 429         err = ieee80211_register_hw(dev);
 430         if (err) {
 431                 pr_err("Cannot register device (%d).\n",
 432                        err);
 433 #ifdef CONFIG_PM
 434                 cw1200_pm_deinit(&priv->pm_state);
 435 #endif
 436                 return err;
 437         }
 438
 439         cw1200_debug_init(priv);
 440
 441         pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
 442         return 0;
 443 }
 444
 445 static void cw1200_free_common(struct ieee80211_hw *dev)
 446 {
 447         ieee80211_free_hw(dev);
 448 }
 449
 450 static void cw1200_unregister_common(struct ieee80211_hw *dev)
 451 {
 452         struct cw1200_common *priv = dev->priv;
 453         int i;
 454
 455         ieee80211_unregister_hw(dev);
 456
 457         del_timer_sync(&priv->mcast_timeout);
 458         cw1200_unregister_bh(priv);
 459
 460         cw1200_debug_release(priv);
 461
 462         mutex_destroy(&priv->conf_mutex);
 463
 464         wsm_buf_deinit(&priv->wsm_cmd_buf);
 465
 466         destroy_workqueue(priv->workqueue);
 467         priv->workqueue = NULL;
 468
 469         if (priv->sdd) {
 470                 release_firmware(priv->sdd);
 471                 priv->sdd = NULL;
 472         }
 473
 474         for (i = 0; i < 4; ++i)
 475                 cw1200_queue_deinit(&priv->tx_queue[i]);
 476
 477         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 478 #ifdef CONFIG_PM
 479         cw1200_pm_deinit(&priv->pm_state);
 480 #endif
 481 }
 482
 483 /* Clock is in KHz */
 484 u32 cw1200_dpll_from_clk(u16 clk_khz)
 485 {
 486         switch (clk_khz) {
 487         case 0x32C8: /* 13000 KHz */
 488                 return 0x1D89D241;
 489         case 0x3E80: /* 16000 KHz */
 490                 return 0x000001E1;
 491         case 0x41A0: /* 16800 KHz */
 492                 return 0x124931C1;
 493         case 0x4B00: /* 19200 KHz */
 494                 return 0x00000191;
 495         case 0x5DC0: /* 24000 KHz */
 496                 return 0x00000141;
 497         case 0x6590: /* 26000 KHz */
 498                 return 0x0EC4F121;
 499         case 0x8340: /* 33600 KHz */
 500                 return 0x092490E1;
 501         case 0x9600: /* 38400 KHz */
 502                 return 0x100010C1;
 503         case 0x9C40: /* 40000 KHz */
 504                 return 0x000000C1;
 505         case 0xBB80: /* 48000 KHz */
 506                 return 0x000000A1;
 507         case 0xCB20: /* 52000 KHz */
 508                 return 0x07627091;
 509         default:
 510                 pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
 511                        clk_khz);
 512                 return 0x0EC4F121;
 513         }
 514 }
 515
 516 int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
 517                       struct hwbus_priv *hwbus,
 518                       struct device *pdev,
 519                       struct cw1200_common **core,
 520                       int ref_clk, const u8 *macaddr,
 521                       const char *sdd_path, bool have_5ghz)
 522 {
 523         int err = -EINVAL;
 524         struct ieee80211_hw *dev;
 525         struct cw1200_common *priv;
 526         struct wsm_operational_mode mode = {
 527                 .power_mode = cw1200_power_mode,
 528                 .disable_more_flag_usage = true,
 529         };
 530
 531         dev = cw1200_init_common(macaddr, have_5ghz);
 532         if (!dev)
 533                 goto err;
 534
 535         priv = dev->priv;
 536         priv->hw_refclk = ref_clk;
 537         if (cw1200_refclk)
 538                 priv->hw_refclk = cw1200_refclk;
 539
 540         priv->sdd_path = (char *)sdd_path;
 541         if (cw1200_sdd_path)
 542                 priv->sdd_path = cw1200_sdd_path;
 543
 544         priv->hwbus_ops = hwbus_ops;
 545         priv->hwbus_priv = hwbus;
 546         priv->pdev = pdev;
 547         SET_IEEE80211_DEV(priv->hw, pdev);
 548
 549         /* Pass struct cw1200_common back up */
 550         *core = priv;
 551
 552         err = cw1200_register_bh(priv);
 553         if (err)
 554                 goto err1;
 555
 556         err = cw1200_load_firmware(priv);
 557         if (err)
 558                 goto err2;
 559
 560         if (wait_event_interruptible_timeout(priv->wsm_startup_done,
 561                                              priv->firmware_ready,
 562                                              3*HZ) <= 0) {
 563                 /* TODO: Need to find how to reset device
 564                    in QUEUE mode properly.
 565                 */
 566                 pr_err("Timeout waiting on device startup\n");
 567                 err = -ETIMEDOUT;
 568                 goto err2;
 569         }
 570
 571         /* Set low-power mode. */
 572         wsm_set_operational_mode(priv, &mode);
 573
 574         /* Enable multi-TX confirmation */
 575         wsm_use_multi_tx_conf(priv, true);
 576
 577         err = cw1200_register_common(dev);
 578         if (err)
 579                 goto err2;
 580
 581         return err;
 582
 583 err2:
 584         cw1200_unregister_bh(priv);
 585 err1:
 586         cw1200_free_common(dev);
 587 err:
 588         *core = NULL;
 589         return err;
 590 }
 591 EXPORT_SYMBOL_GPL(cw1200_core_probe);
 592
 593 void cw1200_core_release(struct cw1200_common *self)
 594 {
 595         /* Disable device interrupts */
 596         self->hwbus_ops->lock(self->hwbus_priv);
 597         __cw1200_irq_enable(self, 0);
 598         self->hwbus_ops->unlock(self->hwbus_priv);
 599
 600         /* And then clean up */
 601         cw1200_unregister_common(self->hw);
 602         cw1200_free_common(self->hw);
 603         return;
 604 }
 605 EXPORT_SYMBOL_GPL(cw1200_core_release);