diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/mac80211-ops.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/mac80211-ops.c | 819 |
1 files changed, 819 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c new file mode 100644 index 000000000..d06560079 --- /dev/null +++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c @@ -0,0 +1,819 @@ +/*- + * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting + * Copyright (c) 2004-2005 Atheros Communications, Inc. + * Copyright (c) 2006 Devicescape Software, Inc. + * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> + * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> + * Copyright (c) 2010 Bruno Randolf <br1@einfach.org> + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any + * redistribution must be conditioned upon including a substantially + * similar Disclaimer requirement for further binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGES. + * + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <net/mac80211.h> +#include <asm/unaligned.h> + +#include "ath5k.h" +#include "base.h" +#include "reg.h" + +/********************\ +* Mac80211 functions * +\********************/ + +static void +ath5k_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ath5k_hw *ah = hw->priv; + u16 qnum = skb_get_queue_mapping(skb); + + if (WARN_ON(qnum >= ah->ah_capabilities.cap_queues.q_tx_num)) { + ieee80211_free_txskb(hw, skb); + return; + } + + ath5k_tx_queue(hw, skb, &ah->txqs[qnum], control); +} + + +static int +ath5k_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct ath5k_hw *ah = hw->priv; + int ret; + struct ath5k_vif *avf = (void *)vif->drv_priv; + + mutex_lock(&ah->lock); + + if ((vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_ADHOC) + && (ah->num_ap_vifs + ah->num_adhoc_vifs) >= ATH_BCBUF) { + ret = -ELNRNG; + goto end; + } + + /* Don't allow other interfaces if one ad-hoc is configured. + * TODO: Fix the problems with ad-hoc and multiple other interfaces. + * We would need to operate the HW in ad-hoc mode to allow TSF updates + * for the IBSS, but this breaks with additional AP or STA interfaces + * at the moment. */ + if (ah->num_adhoc_vifs || + (ah->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) { + ATH5K_ERR(ah, "Only one single ad-hoc interface is allowed.\n"); + ret = -ELNRNG; + goto end; + } + + switch (vif->type) { + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_MESH_POINT: + avf->opmode = vif->type; + break; + default: + ret = -EOPNOTSUPP; + goto end; + } + + ah->nvifs++; + ATH5K_DBG(ah, ATH5K_DEBUG_MODE, "add interface mode %d\n", avf->opmode); + + /* Assign the vap/adhoc to a beacon xmit slot. */ + if ((avf->opmode == NL80211_IFTYPE_AP) || + (avf->opmode == NL80211_IFTYPE_ADHOC) || + (avf->opmode == NL80211_IFTYPE_MESH_POINT)) { + int slot; + + WARN_ON(list_empty(&ah->bcbuf)); + avf->bbuf = list_first_entry(&ah->bcbuf, struct ath5k_buf, + list); + list_del(&avf->bbuf->list); + + avf->bslot = 0; + for (slot = 0; slot < ATH_BCBUF; slot++) { + if (!ah->bslot[slot]) { + avf->bslot = slot; + break; + } + } + BUG_ON(ah->bslot[avf->bslot] != NULL); + ah->bslot[avf->bslot] = vif; + if (avf->opmode == NL80211_IFTYPE_AP) + ah->num_ap_vifs++; + else if (avf->opmode == NL80211_IFTYPE_ADHOC) + ah->num_adhoc_vifs++; + else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) + ah->num_mesh_vifs++; + } + + /* Any MAC address is fine, all others are included through the + * filter. + */ + ath5k_hw_set_lladdr(ah, vif->addr); + + ath5k_update_bssid_mask_and_opmode(ah, vif); + ret = 0; +end: + mutex_unlock(&ah->lock); + return ret; +} + + +static void +ath5k_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath5k_hw *ah = hw->priv; + struct ath5k_vif *avf = (void *)vif->drv_priv; + unsigned int i; + + mutex_lock(&ah->lock); + ah->nvifs--; + + if (avf->bbuf) { + ath5k_txbuf_free_skb(ah, avf->bbuf); + list_add_tail(&avf->bbuf->list, &ah->bcbuf); + for (i = 0; i < ATH_BCBUF; i++) { + if (ah->bslot[i] == vif) { + ah->bslot[i] = NULL; + break; + } + } + avf->bbuf = NULL; + } + if (avf->opmode == NL80211_IFTYPE_AP) + ah->num_ap_vifs--; + else if (avf->opmode == NL80211_IFTYPE_ADHOC) + ah->num_adhoc_vifs--; + else if (avf->opmode == NL80211_IFTYPE_MESH_POINT) + ah->num_mesh_vifs--; + + ath5k_update_bssid_mask_and_opmode(ah, NULL); + mutex_unlock(&ah->lock); +} + + +/* + * TODO: Phy disable/diversity etc + */ +static int +ath5k_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ath5k_hw *ah = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + int ret = 0; + int i; + + mutex_lock(&ah->lock); + + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + ret = ath5k_chan_set(ah, &conf->chandef); + if (ret < 0) + goto unlock; + } + + if ((changed & IEEE80211_CONF_CHANGE_POWER) && + (ah->ah_txpower.txp_requested != conf->power_level)) { + ah->ah_txpower.txp_requested = conf->power_level; + + /* Half dB steps */ + ath5k_hw_set_txpower_limit(ah, (conf->power_level * 2)); + } + + if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { + ah->ah_retry_long = conf->long_frame_max_tx_count; + ah->ah_retry_short = conf->short_frame_max_tx_count; + + for (i = 0; i < ah->ah_capabilities.cap_queues.q_tx_num; i++) + ath5k_hw_set_tx_retry_limits(ah, i); + } + + /* TODO: + * 1) Move this on config_interface and handle each case + * separately eg. when we have only one STA vif, use + * AR5K_ANTMODE_SINGLE_AP + * + * 2) Allow the user to change antenna mode eg. when only + * one antenna is present + * + * 3) Allow the user to set default/tx antenna when possible + * + * 4) Default mode should handle 90% of the cases, together + * with fixed a/b and single AP modes we should be able to + * handle 99%. Sectored modes are extreme cases and i still + * haven't found a usage for them. If we decide to support them, + * then we must allow the user to set how many tx antennas we + * have available + */ + ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode); + +unlock: + mutex_unlock(&ah->lock); + return ret; +} + + +static void +ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, u32 changes) +{ + struct ath5k_vif *avf = (void *)vif->drv_priv; + struct ath5k_hw *ah = hw->priv; + struct ath_common *common = ath5k_hw_common(ah); + + mutex_lock(&ah->lock); + + if (changes & BSS_CHANGED_BSSID) { + /* Cache for later use during resets */ + memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); + common->curaid = 0; + ath5k_hw_set_bssid(ah); + } + + if (changes & BSS_CHANGED_BEACON_INT) + ah->bintval = bss_conf->beacon_int; + + if (changes & BSS_CHANGED_ERP_SLOT) { + int slot_time; + + ah->ah_short_slot = bss_conf->use_short_slot; + slot_time = ath5k_hw_get_default_slottime(ah) + + 3 * ah->ah_coverage_class; + ath5k_hw_set_ifs_intervals(ah, slot_time); + } + + if (changes & BSS_CHANGED_ASSOC) { + avf->assoc = bss_conf->assoc; + if (bss_conf->assoc) + ah->assoc = bss_conf->assoc; + else + ah->assoc = ath5k_any_vif_assoc(ah); + + if (ah->opmode == NL80211_IFTYPE_STATION) + ath5k_set_beacon_filter(hw, ah->assoc); + ath5k_hw_set_ledstate(ah, ah->assoc ? + AR5K_LED_ASSOC : AR5K_LED_INIT); + if (bss_conf->assoc) { + ATH5K_DBG(ah, ATH5K_DEBUG_ANY, + "Bss Info ASSOC %d, bssid: %pM\n", + bss_conf->aid, common->curbssid); + common->curaid = bss_conf->aid; + ath5k_hw_set_bssid(ah); + /* Once ANI is available you would start it here */ + } + } + + if (changes & BSS_CHANGED_BEACON) { + spin_lock_bh(&ah->block); + ath5k_beacon_update(hw, vif); + spin_unlock_bh(&ah->block); + } + + if (changes & BSS_CHANGED_BEACON_ENABLED) + ah->enable_beacon = bss_conf->enable_beacon; + + if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED | + BSS_CHANGED_BEACON_INT)) + ath5k_beacon_config(ah); + + mutex_unlock(&ah->lock); +} + + +static u64 +ath5k_prepare_multicast(struct ieee80211_hw *hw, + struct netdev_hw_addr_list *mc_list) +{ + u32 mfilt[2], val; + u8 pos; + struct netdev_hw_addr *ha; + + mfilt[0] = 0; + mfilt[1] = 0; + + netdev_hw_addr_list_for_each(ha, mc_list) { + /* calculate XOR of eight 6-bit values */ + val = get_unaligned_le32(ha->addr + 0); + pos = (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; + val = get_unaligned_le32(ha->addr + 3); + pos ^= (val >> 18) ^ (val >> 12) ^ (val >> 6) ^ val; + pos &= 0x3f; + mfilt[pos / 32] |= (1 << (pos % 32)); + /* XXX: we might be able to just do this instead, + * but not sure, needs testing, if we do use this we'd + * need to inform below not to reset the mcast */ + /* ath5k_hw_set_mcast_filterindex(ah, + * ha->addr[5]); */ + } + + return ((u64)(mfilt[1]) << 32) | mfilt[0]; +} + + +/* + * o always accept unicast, broadcast, and multicast traffic + * o multicast traffic for all BSSIDs will be enabled if mac80211 + * says it should be + * o maintain current state of phy ofdm or phy cck error reception. + * If the hardware detects any of these type of errors then + * ath5k_hw_get_rx_filter() will pass to us the respective + * hardware filters to be able to receive these type of frames. + * o probe request frames are accepted only when operating in + * hostap, adhoc, or monitor modes + * o enable promiscuous mode according to the interface state + * o accept beacons: + * - when operating in adhoc mode so the 802.11 layer creates + * node table entries for peers, + * - when operating in station mode for collecting rssi data when + * the station is otherwise quiet, or + * - when scanning + */ +static void +ath5k_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, + unsigned int *new_flags, u64 multicast) +{ +#define SUPPORTED_FIF_FLAGS \ + (FIF_ALLMULTI | FIF_FCSFAIL | \ + FIF_PLCPFAIL | FIF_CONTROL | FIF_OTHER_BSS | \ + FIF_BCN_PRBRESP_PROMISC) + + struct ath5k_hw *ah = hw->priv; + u32 mfilt[2], rfilt; + struct ath5k_vif_iter_data iter_data; /* to count STA interfaces */ + + mutex_lock(&ah->lock); + + mfilt[0] = multicast; + mfilt[1] = multicast >> 32; + + /* Only deal with supported flags */ + changed_flags &= SUPPORTED_FIF_FLAGS; + *new_flags &= SUPPORTED_FIF_FLAGS; + + /* If HW detects any phy or radar errors, leave those filters on. + * Also, always enable Unicast, Broadcasts and Multicast + * XXX: move unicast, bssid broadcasts and multicast to mac80211 */ + rfilt = (ath5k_hw_get_rx_filter(ah) & (AR5K_RX_FILTER_PHYERR)) | + (AR5K_RX_FILTER_UCAST | AR5K_RX_FILTER_BCAST | + AR5K_RX_FILTER_MCAST); + + /* Note, AR5K_RX_FILTER_MCAST is already enabled */ + if (*new_flags & FIF_ALLMULTI) { + mfilt[0] = ~0; + mfilt[1] = ~0; + } + + /* This is the best we can do */ + if (*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL)) + rfilt |= AR5K_RX_FILTER_PHYERR; + + /* FIF_BCN_PRBRESP_PROMISC really means to enable beacons + * and probes for any BSSID */ + if ((*new_flags & FIF_BCN_PRBRESP_PROMISC) || (ah->nvifs > 1)) + rfilt |= AR5K_RX_FILTER_BEACON; + + /* FIF_CONTROL doc says we should only pass on control frames for this + * station. This needs testing. I believe right now this + * enables *all* control frames, which is OK.. but + * but we should see if we can improve on granularity */ + if (*new_flags & FIF_CONTROL) + rfilt |= AR5K_RX_FILTER_CONTROL; + + /* Additional settings per mode -- this is per ath5k */ + + /* XXX move these to mac80211, and add a beacon IFF flag to mac80211 */ + + switch (ah->opmode) { + case NL80211_IFTYPE_MESH_POINT: + rfilt |= AR5K_RX_FILTER_CONTROL | + AR5K_RX_FILTER_BEACON | + AR5K_RX_FILTER_PROBEREQ | + AR5K_RX_FILTER_PROM; + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_ADHOC: + rfilt |= AR5K_RX_FILTER_PROBEREQ | + AR5K_RX_FILTER_BEACON; + break; + case NL80211_IFTYPE_STATION: + if (ah->assoc) + rfilt |= AR5K_RX_FILTER_BEACON; + default: + break; + } + + iter_data.hw_macaddr = NULL; + iter_data.n_stas = 0; + iter_data.need_set_hw_addr = false; + ieee80211_iterate_active_interfaces_atomic( + ah->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath5k_vif_iter, &iter_data); + + /* Set up RX Filter */ + if (iter_data.n_stas > 1) { + /* If you have multiple STA interfaces connected to + * different APs, ARPs are not received (most of the time?) + * Enabling PROMISC appears to fix that problem. + */ + rfilt |= AR5K_RX_FILTER_PROM; + } + + /* Set filters */ + ath5k_hw_set_rx_filter(ah, rfilt); + + /* Set multicast bits */ + ath5k_hw_set_mcast_filter(ah, mfilt[0], mfilt[1]); + /* Set the cached hw filter flags, this will later actually + * be set in HW */ + ah->filter_flags = rfilt; + /* Store current FIF filter flags */ + ah->fif_filter_flags = *new_flags; + + mutex_unlock(&ah->lock); +} + + +static int +ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct ath5k_hw *ah = hw->priv; + struct ath_common *common = ath5k_hw_common(ah); + int ret = 0; + + if (ath5k_modparam_nohwcrypt) + return -EOPNOTSUPP; + + if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) + return -EOPNOTSUPP; + + if (vif->type == NL80211_IFTYPE_ADHOC && + (key->cipher == WLAN_CIPHER_SUITE_TKIP || + key->cipher == WLAN_CIPHER_SUITE_CCMP) && + !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { + /* don't program group keys when using IBSS_RSN */ + return -EOPNOTSUPP; + } + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + case WLAN_CIPHER_SUITE_TKIP: + break; + case WLAN_CIPHER_SUITE_CCMP: + if (common->crypt_caps & ATH_CRYPT_CAP_CIPHER_AESCCM) + break; + return -EOPNOTSUPP; + default: + return -EOPNOTSUPP; + } + + mutex_lock(&ah->lock); + + switch (cmd) { + case SET_KEY: + ret = ath_key_config(common, vif, sta, key); + if (ret >= 0) { + key->hw_key_idx = ret; + /* push IV and Michael MIC generation to stack */ + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + if (key->cipher == WLAN_CIPHER_SUITE_TKIP) + key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; + if (key->cipher == WLAN_CIPHER_SUITE_CCMP) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + ret = 0; + } + break; + case DISABLE_KEY: + ath_key_delete(common, key->hw_key_idx); + break; + default: + ret = -EINVAL; + } + + mutex_unlock(&ah->lock); + return ret; +} + + +static void +ath5k_sw_scan_start(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const u8 *mac_addr) +{ + struct ath5k_hw *ah = hw->priv; + if (!ah->assoc) + ath5k_hw_set_ledstate(ah, AR5K_LED_SCAN); +} + + +static void +ath5k_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct ath5k_hw *ah = hw->priv; + ath5k_hw_set_ledstate(ah, ah->assoc ? + AR5K_LED_ASSOC : AR5K_LED_INIT); +} + + +static int +ath5k_get_stats(struct ieee80211_hw *hw, + struct ieee80211_low_level_stats *stats) +{ + struct ath5k_hw *ah = hw->priv; + + /* Force update */ + ath5k_hw_update_mib_counters(ah); + + stats->dot11ACKFailureCount = ah->stats.ack_fail; + stats->dot11RTSFailureCount = ah->stats.rts_fail; + stats->dot11RTSSuccessCount = ah->stats.rts_ok; + stats->dot11FCSErrorCount = ah->stats.fcs_error; + + return 0; +} + + +static int +ath5k_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct ath5k_hw *ah = hw->priv; + struct ath5k_txq_info qi; + int ret = 0; + + if (queue >= ah->ah_capabilities.cap_queues.q_tx_num) + return 0; + + mutex_lock(&ah->lock); + + ath5k_hw_get_tx_queueprops(ah, queue, &qi); + + qi.tqi_aifs = params->aifs; + qi.tqi_cw_min = params->cw_min; + qi.tqi_cw_max = params->cw_max; + qi.tqi_burst_time = params->txop * 32; + + ATH5K_DBG(ah, ATH5K_DEBUG_ANY, + "Configure tx [queue %d], " + "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", + queue, params->aifs, params->cw_min, + params->cw_max, params->txop); + + if (ath5k_hw_set_tx_queueprops(ah, queue, &qi)) { + ATH5K_ERR(ah, + "Unable to update hardware queue %u!\n", queue); + ret = -EIO; + } else + ath5k_hw_reset_tx_queue(ah, queue); + + mutex_unlock(&ah->lock); + + return ret; +} + + +static u64 +ath5k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct ath5k_hw *ah = hw->priv; + + return ath5k_hw_get_tsf64(ah); +} + + +static void +ath5k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u64 tsf) +{ + struct ath5k_hw *ah = hw->priv; + + ath5k_hw_set_tsf64(ah, tsf); +} + + +static void +ath5k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct ath5k_hw *ah = hw->priv; + + /* + * in IBSS mode we need to update the beacon timers too. + * this will also reset the TSF if we call it with 0 + */ + if (ah->opmode == NL80211_IFTYPE_ADHOC) + ath5k_beacon_update_timers(ah, 0); + else + ath5k_hw_reset_tsf(ah); +} + + +static int +ath5k_get_survey(struct ieee80211_hw *hw, int idx, struct survey_info *survey) +{ + struct ath5k_hw *ah = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + struct ath_common *common = ath5k_hw_common(ah); + struct ath_cycle_counters *cc = &common->cc_survey; + unsigned int div = common->clockrate * 1000; + + if (idx != 0) + return -ENOENT; + + spin_lock_bh(&common->cc_lock); + ath_hw_cycle_counters_update(common); + if (cc->cycles > 0) { + ah->survey.time += cc->cycles / div; + ah->survey.time_busy += cc->rx_busy / div; + ah->survey.time_rx += cc->rx_frame / div; + ah->survey.time_tx += cc->tx_frame / div; + } + memset(cc, 0, sizeof(*cc)); + spin_unlock_bh(&common->cc_lock); + + memcpy(survey, &ah->survey, sizeof(*survey)); + + survey->channel = conf->chandef.chan; + survey->noise = ah->ah_noise_floor; + survey->filled = SURVEY_INFO_NOISE_DBM | + SURVEY_INFO_IN_USE | + SURVEY_INFO_TIME | + SURVEY_INFO_TIME_BUSY | + SURVEY_INFO_TIME_RX | + SURVEY_INFO_TIME_TX; + + return 0; +} + + +/** + * ath5k_set_coverage_class - Set IEEE 802.11 coverage class + * + * @hw: struct ieee80211_hw pointer + * @coverage_class: IEEE 802.11 coverage class number + * + * Mac80211 callback. Sets slot time, ACK timeout and CTS timeout for given + * coverage class. The values are persistent, they are restored after device + * reset. + */ +static void +ath5k_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class) +{ + struct ath5k_hw *ah = hw->priv; + + mutex_lock(&ah->lock); + ath5k_hw_set_coverage_class(ah, coverage_class); + mutex_unlock(&ah->lock); +} + + +static int +ath5k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) +{ + struct ath5k_hw *ah = hw->priv; + + if (tx_ant == 1 && rx_ant == 1) + ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_A); + else if (tx_ant == 2 && rx_ant == 2) + ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_FIXED_B); + else if ((tx_ant & 3) == 3 && (rx_ant & 3) == 3) + ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT); + else + return -EINVAL; + return 0; +} + + +static int +ath5k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) +{ + struct ath5k_hw *ah = hw->priv; + + switch (ah->ah_ant_mode) { + case AR5K_ANTMODE_FIXED_A: + *tx_ant = 1; *rx_ant = 1; break; + case AR5K_ANTMODE_FIXED_B: + *tx_ant = 2; *rx_ant = 2; break; + case AR5K_ANTMODE_DEFAULT: + *tx_ant = 3; *rx_ant = 3; break; + } + return 0; +} + + +static void ath5k_get_ringparam(struct ieee80211_hw *hw, + u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) +{ + struct ath5k_hw *ah = hw->priv; + + *tx = ah->txqs[AR5K_TX_QUEUE_ID_DATA_MIN].txq_max; + + *tx_max = ATH5K_TXQ_LEN_MAX; + *rx = *rx_max = ATH_RXBUF; +} + + +static int ath5k_set_ringparam(struct ieee80211_hw *hw, u32 tx, u32 rx) +{ + struct ath5k_hw *ah = hw->priv; + u16 qnum; + + /* only support setting tx ring size for now */ + if (rx != ATH_RXBUF) + return -EINVAL; + + /* restrict tx ring size min/max */ + if (!tx || tx > ATH5K_TXQ_LEN_MAX) + return -EINVAL; + + for (qnum = 0; qnum < ARRAY_SIZE(ah->txqs); qnum++) { + if (!ah->txqs[qnum].setup) + continue; + if (ah->txqs[qnum].qnum < AR5K_TX_QUEUE_ID_DATA_MIN || + ah->txqs[qnum].qnum > AR5K_TX_QUEUE_ID_DATA_MAX) + continue; + + ah->txqs[qnum].txq_max = tx; + if (ah->txqs[qnum].txq_len >= ah->txqs[qnum].txq_max) + ieee80211_stop_queue(hw, ah->txqs[qnum].qnum); + } + + return 0; +} + + +const struct ieee80211_ops ath5k_hw_ops = { + .tx = ath5k_tx, + .start = ath5k_start, + .stop = ath5k_stop, + .add_interface = ath5k_add_interface, + /* .change_interface = not implemented */ + .remove_interface = ath5k_remove_interface, + .config = ath5k_config, + .bss_info_changed = ath5k_bss_info_changed, + .prepare_multicast = ath5k_prepare_multicast, + .configure_filter = ath5k_configure_filter, + /* .set_tim = not implemented */ + .set_key = ath5k_set_key, + /* .update_tkip_key = not implemented */ + /* .hw_scan = not implemented */ + .sw_scan_start = ath5k_sw_scan_start, + .sw_scan_complete = ath5k_sw_scan_complete, + .get_stats = ath5k_get_stats, + /* .set_frag_threshold = not implemented */ + /* .set_rts_threshold = not implemented */ + /* .sta_add = not implemented */ + /* .sta_remove = not implemented */ + /* .sta_notify = not implemented */ + .conf_tx = ath5k_conf_tx, + .get_tsf = ath5k_get_tsf, + .set_tsf = ath5k_set_tsf, + .reset_tsf = ath5k_reset_tsf, + /* .tx_last_beacon = not implemented */ + /* .ampdu_action = not needed */ + .get_survey = ath5k_get_survey, + .set_coverage_class = ath5k_set_coverage_class, + /* .rfkill_poll = not implemented */ + /* .flush = not implemented */ + /* .channel_switch = not implemented */ + /* .napi_poll = not implemented */ + .set_antenna = ath5k_set_antenna, + .get_antenna = ath5k_get_antenna, + .set_ringparam = ath5k_set_ringparam, + .get_ringparam = ath5k_get_ringparam, +}; |