diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_init.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_init.c | 834 |
1 files changed, 834 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c new file mode 100644 index 000000000000..dc015077a8d9 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c @@ -0,0 +1,834 @@ +/* + * Copyright (c) 2010 Atheros Communications Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "htc.h" + +MODULE_AUTHOR("Atheros Communications"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices"); + +static unsigned int ath9k_debug = ATH_DBG_DEFAULT; +module_param_named(debug, ath9k_debug, uint, 0); +MODULE_PARM_DESC(debug, "Debugging mask"); + +int htc_modparam_nohwcrypt; +module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444); +MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption"); + +#define CHAN2G(_freq, _idx) { \ + .center_freq = (_freq), \ + .hw_value = (_idx), \ + .max_power = 20, \ +} + +static struct ieee80211_channel ath9k_2ghz_channels[] = { + CHAN2G(2412, 0), /* Channel 1 */ + CHAN2G(2417, 1), /* Channel 2 */ + CHAN2G(2422, 2), /* Channel 3 */ + CHAN2G(2427, 3), /* Channel 4 */ + CHAN2G(2432, 4), /* Channel 5 */ + CHAN2G(2437, 5), /* Channel 6 */ + CHAN2G(2442, 6), /* Channel 7 */ + CHAN2G(2447, 7), /* Channel 8 */ + CHAN2G(2452, 8), /* Channel 9 */ + CHAN2G(2457, 9), /* Channel 10 */ + CHAN2G(2462, 10), /* Channel 11 */ + CHAN2G(2467, 11), /* Channel 12 */ + CHAN2G(2472, 12), /* Channel 13 */ + CHAN2G(2484, 13), /* Channel 14 */ +}; + +/* Atheros hardware rate code addition for short premble */ +#define SHPCHECK(__hw_rate, __flags) \ + ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04) : 0) + +#define RATE(_bitrate, _hw_rate, _flags) { \ + .bitrate = (_bitrate), \ + .flags = (_flags), \ + .hw_value = (_hw_rate), \ + .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ +} + +static struct ieee80211_rate ath9k_legacy_rates[] = { + RATE(10, 0x1b, 0), + RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp : 0x1e */ + RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp: 0x1d */ + RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), /* short: 0x1c */ + RATE(60, 0x0b, 0), + RATE(90, 0x0f, 0), + RATE(120, 0x0a, 0), + RATE(180, 0x0e, 0), + RATE(240, 0x09, 0), + RATE(360, 0x0d, 0), + RATE(480, 0x08, 0), + RATE(540, 0x0c, 0), +}; + +static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv) +{ + int time_left; + + if (atomic_read(&priv->htc->tgt_ready) > 0) { + atomic_dec(&priv->htc->tgt_ready); + return 0; + } + + /* Firmware can take up to 50ms to get ready, to be safe use 1 second */ + time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ); + if (!time_left) { + dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n"); + return -ETIMEDOUT; + } + + atomic_dec(&priv->htc->tgt_ready); + + return 0; +} + +static void ath9k_deinit_priv(struct ath9k_htc_priv *priv) +{ + ath9k_htc_exit_debug(priv->ah); + ath9k_hw_deinit(priv->ah); + tasklet_kill(&priv->wmi_tasklet); + tasklet_kill(&priv->rx_tasklet); + tasklet_kill(&priv->tx_tasklet); + kfree(priv->ah); + priv->ah = NULL; +} + +static void ath9k_deinit_device(struct ath9k_htc_priv *priv) +{ + struct ieee80211_hw *hw = priv->hw; + + wiphy_rfkill_stop_polling(hw->wiphy); + ath9k_deinit_leds(priv); + ieee80211_unregister_hw(hw); + ath9k_rx_cleanup(priv); + ath9k_tx_cleanup(priv); + ath9k_deinit_priv(priv); +} + +static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv, + u16 service_id, + void (*tx) (void *, + struct sk_buff *, + enum htc_endpoint_id, + bool txok), + enum htc_endpoint_id *ep_id) +{ + struct htc_service_connreq req; + + memset(&req, 0, sizeof(struct htc_service_connreq)); + + req.service_id = service_id; + req.ep_callbacks.priv = priv; + req.ep_callbacks.rx = ath9k_htc_rxep; + req.ep_callbacks.tx = tx; + + return htc_connect_service(priv->htc, &req, ep_id); +} + +static int ath9k_init_htc_services(struct ath9k_htc_priv *priv) +{ + int ret; + + /* WMI CMD*/ + ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep); + if (ret) + goto err; + + /* Beacon */ + ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep, + &priv->beacon_ep); + if (ret) + goto err; + + /* CAB */ + ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep, + &priv->cab_ep); + if (ret) + goto err; + + + /* UAPSD */ + ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep, + &priv->uapsd_ep); + if (ret) + goto err; + + /* MGMT */ + ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep, + &priv->mgmt_ep); + if (ret) + goto err; + + /* DATA BE */ + ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep, + &priv->data_be_ep); + if (ret) + goto err; + + /* DATA BK */ + ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep, + &priv->data_bk_ep); + if (ret) + goto err; + + /* DATA VI */ + ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep, + &priv->data_vi_ep); + if (ret) + goto err; + + /* DATA VO */ + ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep, + &priv->data_vo_ep); + if (ret) + goto err; + + ret = htc_init(priv->htc); + if (ret) + goto err; + + return 0; + +err: + dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n"); + return ret; +} + +static int ath9k_reg_notifier(struct wiphy *wiphy, + struct regulatory_request *request) +{ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); + struct ath9k_htc_priv *priv = hw->priv; + + return ath_reg_notifier_apply(wiphy, request, + ath9k_hw_regulatory(priv->ah)); +} + +static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + __be32 val, reg = cpu_to_be32(reg_offset); + int r; + + r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID, + (u8 *) ®, sizeof(reg), + (u8 *) &val, sizeof(val), + 100); + if (unlikely(r)) { + ath_print(common, ATH_DBG_WMI, + "REGISTER READ FAILED: (0x%04x, %d)\n", + reg_offset, r); + return -EIO; + } + + return be32_to_cpu(val); +} + +static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + __be32 buf[2] = { + cpu_to_be32(reg_offset), + cpu_to_be32(val), + }; + int r; + + r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, + (u8 *) &buf, sizeof(buf), + (u8 *) &val, sizeof(val), + 100); + if (unlikely(r)) { + ath_print(common, ATH_DBG_WMI, + "REGISTER WRITE FAILED:(0x%04x, %d)\n", + reg_offset, r); + } +} + +static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + u32 rsp_status; + int r; + + mutex_lock(&priv->wmi->multi_write_mutex); + + /* Store the register/value */ + priv->wmi->multi_write[priv->wmi->multi_write_idx].reg = + cpu_to_be32(reg_offset); + priv->wmi->multi_write[priv->wmi->multi_write_idx].val = + cpu_to_be32(val); + + priv->wmi->multi_write_idx++; + + /* If the buffer is full, send it out. */ + if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER) { + r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, + (u8 *) &priv->wmi->multi_write, + sizeof(struct register_write) * priv->wmi->multi_write_idx, + (u8 *) &rsp_status, sizeof(rsp_status), + 100); + if (unlikely(r)) { + ath_print(common, ATH_DBG_WMI, + "REGISTER WRITE FAILED, multi len: %d\n", + priv->wmi->multi_write_idx); + } + priv->wmi->multi_write_idx = 0; + } + + mutex_unlock(&priv->wmi->multi_write_mutex); +} + +static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + + if (atomic_read(&priv->wmi->mwrite_cnt)) + ath9k_regwrite_buffer(hw_priv, val, reg_offset); + else + ath9k_regwrite_single(hw_priv, val, reg_offset); +} + +static void ath9k_enable_regwrite_buffer(void *hw_priv) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + + atomic_inc(&priv->wmi->mwrite_cnt); +} + +static void ath9k_disable_regwrite_buffer(void *hw_priv) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + + atomic_dec(&priv->wmi->mwrite_cnt); +} + +static void ath9k_regwrite_flush(void *hw_priv) +{ + struct ath_hw *ah = (struct ath_hw *) hw_priv; + struct ath_common *common = ath9k_hw_common(ah); + struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv; + u32 rsp_status; + int r; + + mutex_lock(&priv->wmi->multi_write_mutex); + + if (priv->wmi->multi_write_idx) { + r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID, + (u8 *) &priv->wmi->multi_write, + sizeof(struct register_write) * priv->wmi->multi_write_idx, + (u8 *) &rsp_status, sizeof(rsp_status), + 100); + if (unlikely(r)) { + ath_print(common, ATH_DBG_WMI, + "REGISTER WRITE FAILED, multi len: %d\n", + priv->wmi->multi_write_idx); + } + priv->wmi->multi_write_idx = 0; + } + + mutex_unlock(&priv->wmi->multi_write_mutex); +} + +static const struct ath_ops ath9k_common_ops = { + .read = ath9k_regread, + .write = ath9k_regwrite, + .enable_write_buffer = ath9k_enable_regwrite_buffer, + .disable_write_buffer = ath9k_disable_regwrite_buffer, + .write_flush = ath9k_regwrite_flush, +}; + +static void ath_usb_read_cachesize(struct ath_common *common, int *csz) +{ + *csz = L1_CACHE_BYTES >> 2; +} + +static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data) +{ + struct ath_hw *ah = (struct ath_hw *) common->ah; + + (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); + + if (!ath9k_hw_wait(ah, + AR_EEPROM_STATUS_DATA, + AR_EEPROM_STATUS_DATA_BUSY | + AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, + AH_WAIT_TIMEOUT)) + return false; + + *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA), + AR_EEPROM_STATUS_DATA_VAL); + + return true; +} + +static const struct ath_bus_ops ath9k_usb_bus_ops = { + .ath_bus_type = ATH_USB, + .read_cachesize = ath_usb_read_cachesize, + .eeprom_read = ath_usb_eeprom_read, +}; + +static void setup_ht_cap(struct ath9k_htc_priv *priv, + struct ieee80211_sta_ht_cap *ht_info) +{ + ht_info->ht_supported = true; + ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | + IEEE80211_HT_CAP_SM_PS | + IEEE80211_HT_CAP_SGI_40 | + IEEE80211_HT_CAP_DSSSCCK40; + + ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; + ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; + + memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); + ht_info->mcs.rx_mask[0] = 0xff; + ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; +} + +static int ath9k_init_queues(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + int i; + + for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++) + priv->hwq_map[i] = -1; + + if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BE)) { + ath_print(common, ATH_DBG_FATAL, + "Unable to setup xmit queue for BE traffic\n"); + goto err; + } + + if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BK)) { + ath_print(common, ATH_DBG_FATAL, + "Unable to setup xmit queue for BK traffic\n"); + goto err; + } + if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VI)) { + ath_print(common, ATH_DBG_FATAL, + "Unable to setup xmit queue for VI traffic\n"); + goto err; + } + if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VO)) { + ath_print(common, ATH_DBG_FATAL, + "Unable to setup xmit queue for VO traffic\n"); + goto err; + } + + return 0; + +err: + return -EINVAL; +} + +static void ath9k_init_crypto(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + int i = 0; + + /* Get the hardware key cache size. */ + common->keymax = priv->ah->caps.keycache_size; + if (common->keymax > ATH_KEYMAX) { + ath_print(common, ATH_DBG_ANY, + "Warning, using only %u entries in %u key cache\n", + ATH_KEYMAX, common->keymax); + common->keymax = ATH_KEYMAX; + } + + /* + * Reset the key cache since some parts do not + * reset the contents on initial power up. + */ + for (i = 0; i < common->keymax; i++) + ath9k_hw_keyreset(priv->ah, (u16) i); + + if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER, + ATH9K_CIPHER_TKIP, NULL)) { + /* + * Whether we should enable h/w TKIP MIC. + * XXX: if we don't support WME TKIP MIC, then we wouldn't + * report WMM capable, so it's always safe to turn on + * TKIP MIC in this case. + */ + ath9k_hw_setcapability(priv->ah, ATH9K_CAP_TKIP_MIC, 0, 1, NULL); + } + + /* + * Check whether the separate key cache entries + * are required to handle both tx+rx MIC keys. + * With split mic keys the number of stations is limited + * to 27 otherwise 59. + */ + if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER, + ATH9K_CIPHER_TKIP, NULL) + && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER, + ATH9K_CIPHER_MIC, NULL) + && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_TKIP_SPLIT, + 0, NULL)) + common->splitmic = 1; + + /* turn on mcast key search if possible */ + if (!ath9k_hw_getcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL)) + (void)ath9k_hw_setcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH, + 1, 1, NULL); +} + +static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv) +{ + if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) { + priv->sbands[IEEE80211_BAND_2GHZ].channels = + ath9k_2ghz_channels; + priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ; + priv->sbands[IEEE80211_BAND_2GHZ].n_channels = + ARRAY_SIZE(ath9k_2ghz_channels); + priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; + priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates = + ARRAY_SIZE(ath9k_legacy_rates); + } +} + +static void ath9k_init_misc(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + + common->tx_chainmask = priv->ah->caps.tx_chainmask; + common->rx_chainmask = priv->ah->caps.rx_chainmask; + + if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK) + memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN); + + priv->op_flags |= OP_TXAGGR; + priv->ah->opmode = NL80211_IFTYPE_STATION; +} + +static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid) +{ + struct ath_hw *ah = NULL; + struct ath_common *common; + int ret = 0, csz = 0; + + priv->op_flags |= OP_INVALID; + + ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL); + if (!ah) + return -ENOMEM; + + ah->hw_version.devid = devid; + ah->hw_version.subsysid = 0; /* FIXME */ + priv->ah = ah; + + common = ath9k_hw_common(ah); + common->ops = &ath9k_common_ops; + common->bus_ops = &ath9k_usb_bus_ops; + common->ah = ah; + common->hw = priv->hw; + common->priv = priv; + common->debug_mask = ath9k_debug; + + spin_lock_init(&priv->wmi->wmi_lock); + spin_lock_init(&priv->beacon_lock); + spin_lock_init(&priv->tx_lock); + mutex_init(&priv->mutex); + mutex_init(&priv->aggr_work.mutex); + mutex_init(&priv->htc_pm_lock); + tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet, + (unsigned long)priv); + tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet, + (unsigned long)priv); + tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv); + INIT_DELAYED_WORK(&priv->ath9k_aggr_work, ath9k_htc_aggr_work); + INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work); + INIT_WORK(&priv->ps_work, ath9k_ps_work); + + /* + * Cache line size is used to size and align various + * structures used to communicate with the hardware. + */ + ath_read_cachesize(common, &csz); + common->cachelsz = csz << 2; /* convert to bytes */ + + ret = ath9k_hw_init(ah); + if (ret) { + ath_print(common, ATH_DBG_FATAL, + "Unable to initialize hardware; " + "initialization status: %d\n", ret); + goto err_hw; + } + + ret = ath9k_htc_init_debug(ah); + if (ret) { + ath_print(common, ATH_DBG_FATAL, + "Unable to create debugfs files\n"); + goto err_debug; + } + + ret = ath9k_init_queues(priv); + if (ret) + goto err_queues; + + ath9k_init_crypto(priv); + ath9k_init_channels_rates(priv); + ath9k_init_misc(priv); + + return 0; + +err_queues: + ath9k_htc_exit_debug(ah); +err_debug: + ath9k_hw_deinit(ah); +err_hw: + + kfree(ah); + priv->ah = NULL; + + return ret; +} + +static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv, + struct ieee80211_hw *hw) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + + hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_AMPDU_AGGREGATION | + IEEE80211_HW_SPECTRUM_MGMT | + IEEE80211_HW_HAS_RATE_CONTROL | + IEEE80211_HW_RX_INCLUDES_FCS | + IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_PS_NULLFUNC_STACK; + + hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC); + + hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; + + hw->queues = 4; + hw->channel_change_time = 5000; + hw->max_listen_interval = 10; + hw->vif_data_size = sizeof(struct ath9k_htc_vif); + hw->sta_data_size = sizeof(struct ath9k_htc_sta); + + /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */ + hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) + + sizeof(struct htc_frame_hdr) + 4; + + if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) + hw->wiphy->bands[IEEE80211_BAND_2GHZ] = + &priv->sbands[IEEE80211_BAND_2GHZ]; + + if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) { + if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) + setup_ht_cap(priv, + &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap); + } + + SET_IEEE80211_PERM_ADDR(hw, common->macaddr); +} + +static int ath9k_init_device(struct ath9k_htc_priv *priv, u16 devid) +{ + struct ieee80211_hw *hw = priv->hw; + struct ath_common *common; + struct ath_hw *ah; + int error = 0; + struct ath_regulatory *reg; + + /* Bring up device */ + error = ath9k_init_priv(priv, devid); + if (error != 0) + goto err_init; + + ah = priv->ah; + common = ath9k_hw_common(ah); + ath9k_set_hw_capab(priv, hw); + + /* Initialize regulatory */ + error = ath_regd_init(&common->regulatory, priv->hw->wiphy, + ath9k_reg_notifier); + if (error) + goto err_regd; + + reg = &common->regulatory; + + /* Setup TX */ + error = ath9k_tx_init(priv); + if (error != 0) + goto err_tx; + + /* Setup RX */ + error = ath9k_rx_init(priv); + if (error != 0) + goto err_rx; + + /* Register with mac80211 */ + error = ieee80211_register_hw(hw); + if (error) + goto err_register; + + /* Handle world regulatory */ + if (!ath_is_world_regd(reg)) { + error = regulatory_hint(hw->wiphy, reg->alpha2); + if (error) + goto err_world; + } + + ath9k_init_leds(priv); + ath9k_start_rfkill_poll(priv); + + return 0; + +err_world: + ieee80211_unregister_hw(hw); +err_register: + ath9k_rx_cleanup(priv); +err_rx: + ath9k_tx_cleanup(priv); +err_tx: + /* Nothing */ +err_regd: + ath9k_deinit_priv(priv); +err_init: + return error; +} + +int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev, + u16 devid) +{ + struct ieee80211_hw *hw; + struct ath9k_htc_priv *priv; + int ret; + + hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops); + if (!hw) + return -ENOMEM; + + priv = hw->priv; + priv->hw = hw; + priv->htc = htc_handle; + priv->dev = dev; + htc_handle->drv_priv = priv; + SET_IEEE80211_DEV(hw, priv->dev); + + ret = ath9k_htc_wait_for_target(priv); + if (ret) + goto err_free; + + priv->wmi = ath9k_init_wmi(priv); + if (!priv->wmi) { + ret = -EINVAL; + goto err_free; + } + + ret = ath9k_init_htc_services(priv); + if (ret) + goto err_init; + + /* The device may have been unplugged earlier. */ + priv->op_flags &= ~OP_UNPLUGGED; + + ret = ath9k_init_device(priv, devid); + if (ret) + goto err_init; + + return 0; + +err_init: + ath9k_deinit_wmi(priv); +err_free: + ieee80211_free_hw(hw); + return ret; +} + +void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug) +{ + if (htc_handle->drv_priv) { + + /* Check if the device has been yanked out. */ + if (hotunplug) + htc_handle->drv_priv->op_flags |= OP_UNPLUGGED; + + ath9k_deinit_device(htc_handle->drv_priv); + ath9k_deinit_wmi(htc_handle->drv_priv); + ieee80211_free_hw(htc_handle->drv_priv->hw); + } +} + +#ifdef CONFIG_PM +int ath9k_htc_resume(struct htc_target *htc_handle) +{ + int ret; + + ret = ath9k_htc_wait_for_target(htc_handle->drv_priv); + if (ret) + return ret; + + ret = ath9k_init_htc_services(htc_handle->drv_priv); + return ret; +} +#endif + +static int __init ath9k_htc_init(void) +{ + int error; + + error = ath9k_htc_debug_create_root(); + if (error < 0) { + printk(KERN_ERR + "ath9k_htc: Unable to create debugfs root: %d\n", + error); + goto err_dbg; + } + + error = ath9k_hif_usb_init(); + if (error < 0) { + printk(KERN_ERR + "ath9k_htc: No USB devices found," + " driver not installed.\n"); + error = -ENODEV; + goto err_usb; + } + + return 0; + +err_usb: + ath9k_htc_debug_remove_root(); +err_dbg: + return error; +} +module_init(ath9k_htc_init); + +static void __exit ath9k_htc_exit(void) +{ + ath9k_hif_usb_exit(); + ath9k_htc_debug_remove_root(); + printk(KERN_INFO "ath9k_htc: Driver unloaded\n"); +} +module_exit(ath9k_htc_exit); |