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, 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         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[IEEE80211_BAND_2GHZ] = &cw1200_band_2ghz;
 315         if (have_5ghz)
 316                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &cw1200_band_5ghz;
 317
 318         /* Channel params have to be cleared before registering wiphy again */
 319         for (band = 0; band < IEEE80211_NUM_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         sema_init(&priv->scan.lock, 1);
 349         INIT_WORK(&priv->scan.work, cw1200_scan_work);
 350         INIT_DELAYED_WORK(&priv->scan.probe_work, cw1200_probe_work);
 351         INIT_DELAYED_WORK(&priv->scan.timeout, cw1200_scan_timeout);
 352         INIT_DELAYED_WORK(&priv->clear_recent_scan_work,
 353                           cw1200_clear_recent_scan_work);
 354         INIT_DELAYED_WORK(&priv->join_timeout, cw1200_join_timeout);
 355         INIT_WORK(&priv->unjoin_work, cw1200_unjoin_work);
 356         INIT_WORK(&priv->join_complete_work, cw1200_join_complete_work);
 357         INIT_WORK(&priv->wep_key_work, cw1200_wep_key_work);
 358         INIT_WORK(&priv->tx_policy_upload_work, tx_policy_upload_work);
 359         spin_lock_init(&priv->event_queue_lock);
 360         INIT_LIST_HEAD(&priv->event_queue);
 361         INIT_WORK(&priv->event_handler, cw1200_event_handler);
 362         INIT_DELAYED_WORK(&priv->bss_loss_work, cw1200_bss_loss_work);
 363         INIT_WORK(&priv->bss_params_work, cw1200_bss_params_work);
 364         spin_lock_init(&priv->bss_loss_lock);
 365         spin_lock_init(&priv->ps_state_lock);
 366         INIT_WORK(&priv->set_cts_work, cw1200_set_cts_work);
 367         INIT_WORK(&priv->set_tim_work, cw1200_set_tim_work);
 368         INIT_WORK(&priv->multicast_start_work, cw1200_multicast_start_work);
 369         INIT_WORK(&priv->multicast_stop_work, cw1200_multicast_stop_work);
 370         INIT_WORK(&priv->link_id_work, cw1200_link_id_work);
 371         INIT_DELAYED_WORK(&priv->link_id_gc_work, cw1200_link_id_gc_work);
 372         INIT_WORK(&priv->linkid_reset_work, cw1200_link_id_reset);
 373         INIT_WORK(&priv->update_filtering_work, cw1200_update_filtering_work);
 374         INIT_WORK(&priv->set_beacon_wakeup_period_work,
 375                   cw1200_set_beacon_wakeup_period_work);
 376         setup_timer(&priv->mcast_timeout, cw1200_mcast_timeout,
 377                     (unsigned long)priv);
 378
 379         if (cw1200_queue_stats_init(&priv->tx_queue_stats,
 380                                     CW1200_LINK_ID_MAX,
 381                                     cw1200_skb_dtor,
 382                                     priv)) {
 383                 ieee80211_free_hw(hw);
 384                 return NULL;
 385         }
 386
 387         for (i = 0; i < 4; ++i) {
 388                 if (cw1200_queue_init(&priv->tx_queue[i],
 389                                       &priv->tx_queue_stats, i, 16,
 390                                       cw1200_ttl[i])) {
 391                         for (; i > 0; i--)
 392                                 cw1200_queue_deinit(&priv->tx_queue[i - 1]);
 393                         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 394                         ieee80211_free_hw(hw);
 395                         return NULL;
 396                 }
 397         }
 398
 399         init_waitqueue_head(&priv->channel_switch_done);
 400         init_waitqueue_head(&priv->wsm_cmd_wq);
 401         init_waitqueue_head(&priv->wsm_startup_done);
 402         init_waitqueue_head(&priv->ps_mode_switch_done);
 403         wsm_buf_init(&priv->wsm_cmd_buf);
 404         spin_lock_init(&priv->wsm_cmd.lock);
 405         priv->wsm_cmd.done = 1;
 406         tx_policy_init(priv);
 407
 408         return hw;
 409 }
 410
 411 static int cw1200_register_common(struct ieee80211_hw *dev)
 412 {
 413         struct cw1200_common *priv = dev->priv;
 414         int err;
 415
 416 #ifdef CONFIG_PM
 417         err = cw1200_pm_init(&priv->pm_state, priv);
 418         if (err) {
 419                 pr_err("Cannot init PM. (%d).\n",
 420                        err);
 421                 return err;
 422         }
 423 #endif
 424
 425         err = ieee80211_register_hw(dev);
 426         if (err) {
 427                 pr_err("Cannot register device (%d).\n",
 428                        err);
 429 #ifdef CONFIG_PM
 430                 cw1200_pm_deinit(&priv->pm_state);
 431 #endif
 432                 return err;
 433         }
 434
 435         cw1200_debug_init(priv);
 436
 437         pr_info("Registered as '%s'\n", wiphy_name(dev->wiphy));
 438         return 0;
 439 }
 440
 441 static void cw1200_free_common(struct ieee80211_hw *dev)
 442 {
 443         ieee80211_free_hw(dev);
 444 }
 445
 446 static void cw1200_unregister_common(struct ieee80211_hw *dev)
 447 {
 448         struct cw1200_common *priv = dev->priv;
 449         int i;
 450
 451         ieee80211_unregister_hw(dev);
 452
 453         del_timer_sync(&priv->mcast_timeout);
 454         cw1200_unregister_bh(priv);
 455
 456         cw1200_debug_release(priv);
 457
 458         mutex_destroy(&priv->conf_mutex);
 459
 460         wsm_buf_deinit(&priv->wsm_cmd_buf);
 461
 462         destroy_workqueue(priv->workqueue);
 463         priv->workqueue = NULL;
 464
 465         if (priv->sdd) {
 466                 release_firmware(priv->sdd);
 467                 priv->sdd = NULL;
 468         }
 469
 470         for (i = 0; i < 4; ++i)
 471                 cw1200_queue_deinit(&priv->tx_queue[i]);
 472
 473         cw1200_queue_stats_deinit(&priv->tx_queue_stats);
 474 #ifdef CONFIG_PM
 475         cw1200_pm_deinit(&priv->pm_state);
 476 #endif
 477 }
 478
 479 /* Clock is in KHz */
 480 u32 cw1200_dpll_from_clk(u16 clk_khz)
 481 {
 482         switch (clk_khz) {
 483         case 0x32C8: /* 13000 KHz */
 484                 return 0x1D89D241;
 485         case 0x3E80: /* 16000 KHz */
 486                 return 0x000001E1;
 487         case 0x41A0: /* 16800 KHz */
 488                 return 0x124931C1;
 489         case 0x4B00: /* 19200 KHz */
 490                 return 0x00000191;
 491         case 0x5DC0: /* 24000 KHz */
 492                 return 0x00000141;
 493         case 0x6590: /* 26000 KHz */
 494                 return 0x0EC4F121;
 495         case 0x8340: /* 33600 KHz */
 496                 return 0x092490E1;
 497         case 0x9600: /* 38400 KHz */
 498                 return 0x100010C1;
 499         case 0x9C40: /* 40000 KHz */
 500                 return 0x000000C1;
 501         case 0xBB80: /* 48000 KHz */
 502                 return 0x000000A1;
 503         case 0xCB20: /* 52000 KHz */
 504                 return 0x07627091;
 505         default:
 506                 pr_err("Unknown Refclk freq (0x%04x), using 26000KHz\n",
 507                        clk_khz);
 508                 return 0x0EC4F121;
 509         }
 510 }
 511
 512 int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
 513                       struct hwbus_priv *hwbus,
 514                       struct device *pdev,
 515                       struct cw1200_common **core,
 516                       int ref_clk, const u8 *macaddr,
 517                       const char *sdd_path, bool have_5ghz)
 518 {
 519         int err = -EINVAL;
 520         struct ieee80211_hw *dev;
 521         struct cw1200_common *priv;
 522         struct wsm_operational_mode mode = {
 523                 .power_mode = cw1200_power_mode,
 524                 .disable_more_flag_usage = true,
 525         };
 526
 527         dev = cw1200_init_common(macaddr, have_5ghz);
 528         if (!dev)
 529                 goto err;
 530
 531         priv = dev->priv;
 532         priv->hw_refclk = ref_clk;
 533         if (cw1200_refclk)
 534                 priv->hw_refclk = cw1200_refclk;
 535
 536         priv->sdd_path = (char *)sdd_path;
 537         if (cw1200_sdd_path)
 538                 priv->sdd_path = cw1200_sdd_path;
 539
 540         priv->hwbus_ops = hwbus_ops;
 541         priv->hwbus_priv = hwbus;
 542         priv->pdev = pdev;
 543         SET_IEEE80211_DEV(priv->hw, pdev);
 544
 545         /* Pass struct cw1200_common back up */
 546         *core = priv;
 547
 548         err = cw1200_register_bh(priv);
 549         if (err)
 550                 goto err1;
 551
 552         err = cw1200_load_firmware(priv);
 553         if (err)
 554                 goto err2;
 555
 556         if (wait_event_interruptible_timeout(priv->wsm_startup_done,
 557                                              priv->firmware_ready,
 558                                              3*HZ) <= 0) {
 559                 /* TODO: Need to find how to reset device
 560                    in QUEUE mode properly.
 561                 */
 562                 pr_err("Timeout waiting on device startup\n");
 563                 err = -ETIMEDOUT;
 564                 goto err2;
 565         }
 566
 567         /* Set low-power mode. */
 568         wsm_set_operational_mode(priv, &mode);
 569
 570         /* Enable multi-TX confirmation */
 571         wsm_use_multi_tx_conf(priv, true);
 572
 573         err = cw1200_register_common(dev);
 574         if (err)
 575                 goto err2;
 576
 577         return err;
 578
 579 err2:
 580         cw1200_unregister_bh(priv);
 581 err1:
 582         cw1200_free_common(dev);
 583 err:
 584         *core = NULL;
 585         return err;
 586 }
 587 EXPORT_SYMBOL_GPL(cw1200_core_probe);
 588
 589 void cw1200_core_release(struct cw1200_common *self)
 590 {
 591         /* Disable device interrupts */
 592         self->hwbus_ops->lock(self->hwbus_priv);
 593         __cw1200_irq_enable(self, 0);
 594         self->hwbus_ops->unlock(self->hwbus_priv);
 595
 596         /* And then clean up */
 597         cw1200_unregister_common(self->hw);
 598         cw1200_free_common(self->hw);
 599         return;
 600 }
 601 EXPORT_SYMBOL_GPL(cw1200_core_release);