drivers/net/wireless/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, S_IRUGO);
  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                   = IEEE80211_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                   = IEEE80211_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         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 282                     IEEE80211_HW_SUPPORTS_PS |
 283                     IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
 284                     IEEE80211_HW_REPORTS_TX_ACK_STATUS |
 285                     IEEE80211_HW_SUPPORTS_UAPSD |
 286                     IEEE80211_HW_CONNECTION_MONITOR |
 287                     IEEE80211_HW_AMPDU_AGGREGATION |
 288                     IEEE80211_HW_TX_AMPDU_SETUP_IN_HW |
 289                     IEEE80211_HW_NEED_DTIM_BEFORE_ASSOC;
 290
 291         hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
 292                                           BIT(NL80211_IFTYPE_ADHOC) |
 293                                           BIT(NL80211_IFTYPE_AP) |
 294                                           BIT(NL80211_IFTYPE_MESH_POINT) |
 295                                           BIT(NL80211_IFTYPE_P2P_CLIENT) |
 296                                           BIT(NL80211_IFTYPE_P2P_GO);
 297
 298 #ifdef CONFIG_PM
 299         hw->wiphy->wowlan = &cw1200_wowlan_support;
 300 #endif
 301
 302         hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
 303
 304         hw->queues = 4;
 305
 306         priv->rts_threshold = -1;
 307
 308         hw->max_rates = 8;
 309         hw->max_rate_tries = 15;
 310         hw->extra_tx_headroom = WSM_TX_EXTRA_HEADROOM +
 311                 8;  /* TKIP IV */
 312
 313         hw->sta_data_size = sizeof(struct cw1200_sta_priv);
 314
 315         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &cw1200_band_2ghz;
 316         if (have_5ghz)
 317                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &cw1200_band_5ghz;
 318
 319         /* Channel params have to be cleared before registering wiphy again */
 320         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
 321                 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
 322                 if (!sband)
 323                         continue;
 324                 for (i = 0; i < sband->n_channels; i++) {
 325                         sband->channels[i].flags = 0;
 326                         sband->channels[i].max_antenna_gain = 0;
 327                         sband->channels[i].max_power = 30;
 328                 }
 329         }
 330
 331         hw->wiphy->max_scan_ssids = 2;
 332         hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
 333
 334         if (macaddr)
 335                 SET_IEEE80211_PERM_ADDR(hw, (u8 *)macaddr);
 336         else
 337                 SET_IEEE80211_PERM_ADDR(hw, cw1200_mac_template);
 338
 339         /* Fix up mac address if necessary */
 340         if (hw->wiphy->perm_addr[3] == 0 &&
 341             hw->wiphy->perm_addr[4] == 0 &&
 342             hw->wiphy->perm_addr[5] == 0) {
 343                 get_random_bytes(&hw->wiphy->perm_addr[3], 3);
 344         }
 345
 346         mutex_init(&priv->wsm_cmd_mux);
 347         mutex_init(&priv->conf_mutex);
 348         priv->workqueue = create_singlethread_workqueue("cw1200_wq");
 349         sema_init(&priv->scan.lock, 1);
 350         INIT_WORK(&priv->scan.work, cw1200_scan_work);
 351         INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work);
 352         INIT_DELAYED_WORK(&priv->scan.timeout, cw1200_scan_timeout);
 353         INIT_DELAYED_WORK(&priv->clear_recent_scan_work,
 354                           cw1200_clear_recent_scan_work);
 355         INIT_DELAYED_WORK(&priv->join_timeout, cw1200_join_timeout);
 356         INIT_WORK(&priv->unjoin_work, cw1200_unjoin_work);
 357         INIT_WORK(&priv->join_complete_work, cw1200_join_complete_work);
 358         INIT_WORK(&priv->wep_key_work, cw1200_wep_key_work);
 359         INIT_WORK(&priv->tx_policy_upload_work, tx_policy_upload_work);
 360         spin_lock_init(&priv->event_queue_lock);
 361         INIT_LIST_HEAD(&priv->event_queue);
 362         INIT_WORK(&priv->event_handler, cw1200_event_handler);
 363         INIT_DELAYED_WORK(&priv->bss_loss_work, cw1200_bss_loss_work);
 364         INIT_WORK(&priv->bss_params_work, cw1200_bss_params_work);
 365         spin_lock_init(&priv->bss_loss_lock);
 366         spin_lock_init(&priv->ps_state_lock);
 367         INIT_WORK(&priv->set_cts_work, cw1200_set_cts_work);
 368         INIT_WORK(&priv->set_tim_work, cw1200_set_tim_work);
 369         INIT_WORK(&priv->multicast_start_work, cw1200_multicast_start_work);
 370         INIT_WORK(&priv->multicast_stop_work, cw1200_multicast_stop_work);
 371         INIT_WORK(&priv->link_id_work, cw1200_link_id_work);
 372         INIT_DELAYED_WORK(&priv->link_id_gc_work, cw1200_link_id_gc_work);
 373         INIT_WORK(&priv->linkid_reset_work, cw1200_link_id_reset);
 374         INIT_WORK(&priv->update_filtering_work, cw1200_update_filtering_work);
 375         INIT_WORK(&priv->set_beacon_wakeup_period_work,
 376                   cw1200_set_beacon_wakeup_period_work);
 377         setup_timer(&priv->mcast_timeout, cw1200_mcast_timeout,
 378                     (unsigned long)priv);
 379
 380         if (cw1200_queue_stats_init(&priv->tx_queue_stats,
 381                                     CW1200_LINK_ID_MAX,
 382                                     cw1200_skb_dtor,
 383                                     priv)) {
 384                 ieee80211_free_hw(hw);
 385                 return NULL;
 386         }
 387
 388         for (i = 0; i < 4; ++i) {
 389                 if (cw1200_queue_init(&priv->tx_queue[i],
 390                                       &priv->tx_queue_stats, i, 16,
 391                                       cw1200_ttl[i])) {
 392                         for (; i > 0; i--)
 393                                 cw1200_queue_deinit(&priv->tx_queue[i - 1]);
 394                         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 395                         ieee80211_free_hw(hw);
 396                         return NULL;
 397                 }
 398         }
 399
 400         init_waitqueue_head(&priv->channel_switch_done);
 401         init_waitqueue_head(&priv->wsm_cmd_wq);
 402         init_waitqueue_head(&priv->wsm_startup_done);
 403         init_waitqueue_head(&priv->ps_mode_switch_done);
 404         wsm_buf_init(&priv->wsm_cmd_buf);
 405         spin_lock_init(&priv->wsm_cmd.lock);
 406         priv->wsm_cmd.done = 1;
 407         tx_policy_init(priv);
 408
 409         return hw;
 410 }
 411
 412 static int cw1200_register_common(struct ieee80211_hw *dev)
 413 {
 414         struct cw1200_common *priv = dev->priv;
 415         int err;
 416
 417 #ifdef CONFIG_PM
 418         err = cw1200_pm_init(&priv->pm_state, priv);
 419         if (err) {
 420                 pr_err("Cannot init PM. (%d).\n",
 421                        err);
 422                 return err;
 423         }
 424 #endif
 425
 426         err = ieee80211_register_hw(dev);
 427         if (err) {
 428                 pr_err("Cannot register device (%d).\n",
 429                        err);
 430 #ifdef CONFIG_PM
 431                 cw1200_pm_deinit(&priv->pm_state);
 432 #endif
 433                 return err;
 434         }
 435
 436         cw1200_debug_init(priv);
 437
 438         pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
 439         return 0;
 440 }
 441
 442 static void cw1200_free_common(struct ieee80211_hw *dev)
 443 {
 444         ieee80211_free_hw(dev);
 445 }
 446
 447 static void cw1200_unregister_common(struct ieee80211_hw *dev)
 448 {
 449         struct cw1200_common *priv = dev->priv;
 450         int i;
 451
 452         ieee80211_unregister_hw(dev);
 453
 454         del_timer_sync(&priv->mcast_timeout);
 455         cw1200_unregister_bh(priv);
 456
 457         cw1200_debug_release(priv);
 458
 459         mutex_destroy(&priv->conf_mutex);
 460
 461         wsm_buf_deinit(&priv->wsm_cmd_buf);
 462
 463         destroy_workqueue(priv->workqueue);
 464         priv->workqueue = NULL;
 465
 466         if (priv->sdd) {
 467                 release_firmware(priv->sdd);
 468                 priv->sdd = NULL;
 469         }
 470
 471         for (i = 0; i < 4; ++i)
 472                 cw1200_queue_deinit(&priv->tx_queue[i]);
 473
 474         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 475 #ifdef CONFIG_PM
 476         cw1200_pm_deinit(&priv->pm_state);
 477 #endif
 478 }
 479
 480 /* Clock is in KHz */
 481 u32 cw1200_dpll_from_clk(u16 clk_khz)
 482 {
 483         switch (clk_khz) {
 484         case 0x32C8: /* 13000 KHz */
 485                 return 0x1D89D241;
 486         case 0x3E80: /* 16000 KHz */
 487                 return 0x000001E1;
 488         case 0x41A0: /* 16800 KHz */
 489                 return 0x124931C1;
 490         case 0x4B00: /* 19200 KHz */
 491                 return 0x00000191;
 492         case 0x5DC0: /* 24000 KHz */
 493                 return 0x00000141;
 494         case 0x6590: /* 26000 KHz */
 495                 return 0x0EC4F121;
 496         case 0x8340: /* 33600 KHz */
 497                 return 0x092490E1;
 498         case 0x9600: /* 38400 KHz */
 499                 return 0x100010C1;
 500         case 0x9C40: /* 40000 KHz */
 501                 return 0x000000C1;
 502         case 0xBB80: /* 48000 KHz */
 503                 return 0x000000A1;
 504         case 0xCB20: /* 52000 KHz */
 505                 return 0x07627091;
 506         default:
 507                 pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
 508                        clk_khz);
 509                 return 0x0EC4F121;
 510         }
 511 }
 512
 513 int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
 514                       struct hwbus_priv *hwbus,
 515                       struct device *pdev,
 516                       struct cw1200_common **core,
 517                       int ref_clk, const u8 *macaddr,
 518                       const char *sdd_path, bool have_5ghz)
 519 {
 520         int err = -EINVAL;
 521         struct ieee80211_hw *dev;
 522         struct cw1200_common *priv;
 523         struct wsm_operational_mode mode = {
 524                 .power_mode = cw1200_power_mode,
 525                 .disable_more_flag_usage = true,
 526         };
 527
 528         dev = cw1200_init_common(macaddr, have_5ghz);
 529         if (!dev)
 530                 goto err;
 531
 532         priv = dev->priv;
 533         priv->hw_refclk = ref_clk;
 534         if (cw1200_refclk)
 535                 priv->hw_refclk = cw1200_refclk;
 536
 537         priv->sdd_path = (char *)sdd_path;
 538         if (cw1200_sdd_path)
 539                 priv->sdd_path = cw1200_sdd_path;
 540
 541         priv->hwbus_ops = hwbus_ops;
 542         priv->hwbus_priv = hwbus;
 543         priv->pdev = pdev;
 544         SET_IEEE80211_DEV(priv->hw, pdev);
 545
 546         /* Pass struct cw1200_common back up */
 547         *core = priv;
 548
 549         err = cw1200_register_bh(priv);
 550         if (err)
 551                 goto err1;
 552
 553         err = cw1200_load_firmware(priv);
 554         if (err)
 555                 goto err2;
 556
 557         if (wait_event_interruptible_timeout(priv->wsm_startup_done,
 558                                              priv->firmware_ready,
 559                                              3*HZ) <= 0) {
 560                 /* TODO: Need to find how to reset device
 561                    in QUEUE mode properly.
 562                 */
 563                 pr_err("Timeout waiting on device startup\n");
 564                 err = -ETIMEDOUT;
 565                 goto err2;
 566         }
 567
 568         /* Set low-power mode. */
 569         wsm_set_operational_mode(priv, &mode);
 570
 571         /* Enable multi-TX confirmation */
 572         wsm_use_multi_tx_conf(priv, true);
 573
 574         err = cw1200_register_common(dev);
 575         if (err)
 576                 goto err2;
 577
 578         return err;
 579
 580 err2:
 581         cw1200_unregister_bh(priv);
 582 err1:
 583         cw1200_free_common(dev);
 584 err:
 585         *core = NULL;
 586         return err;
 587 }
 588 EXPORT_SYMBOL_GPL(cw1200_core_probe);
 589
 590 void cw1200_core_release(struct cw1200_common *self)
 591 {
 592         /* Disable device interrupts */
 593         self->hwbus_ops->lock(self->hwbus_priv);
 594         __cw1200_irq_enable(self, 0);
 595         self->hwbus_ops->unlock(self->hwbus_priv);
 596
 597         /* And then clean up */
 598         cw1200_unregister_common(self->hw);
 599         cw1200_free_common(self->hw);
 600         return;
 601 }
 602 EXPORT_SYMBOL_GPL(cw1200_core_release);