/*
* Copyright ( c ) 2010 - 2011 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"
/*************/
/* Utilities */
/*************/
/* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
struct ath9k_channel *ichan)
{
if (IS_CHAN_5GHZ(ichan))
return HTC_MODE_11NA;
return HTC_MODE_11NG;
}
bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
enum ath9k_power_mode mode)
{
bool ret;
mutex_lock(&priv->htc_pm_lock);
ret = ath9k_hw_setpower(priv->ah, mode);
mutex_unlock(&priv->htc_pm_lock);
return ret;
}
void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
{
mutex_lock(&priv->htc_pm_lock);
if (++priv->ps_usecount != 1 )
goto unlock;
ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
unlock:
mutex_unlock(&priv->htc_pm_lock);
}
void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
{
bool reset;
mutex_lock(&priv->htc_pm_lock);
if (--priv->ps_usecount != 0 )
goto unlock;
if (priv->ps_idle) {
ath9k_hw_setrxabort(priv->ah, true );
ath9k_hw_stopdmarecv(priv->ah, &reset);
ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
} else if (priv->ps_enabled) {
ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
}
unlock:
mutex_unlock(&priv->htc_pm_lock);
}
void ath9k_ps_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv =
container_of(work, struct ath9k_htc_priv,
ps_work);
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
/* The chip wakes up after receiving the first beacon
while network sleep is enabled . For the driver to
be in sync with the hw , set the chip to awake and
only then set it to sleep .
*/
ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
}
static void ath9k_htc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = data;
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
if ((vif->type == NL80211_IFTYPE_AP ||
vif->type == NL80211_IFTYPE_MESH_POINT) &&
bss_conf->enable_beacon) {
priv->reconfig_beacon = true ;
priv->rearm_ani = true ;
}
if (vif->cfg.assoc) {
priv->rearm_ani = true ;
priv->reconfig_beacon = true ;
}
}
static void ath9k_htc_vif_reconfig(struct ath9k_htc_priv *priv)
{
priv->rearm_ani = false ;
priv->reconfig_beacon = false ;
ieee80211_iterate_active_interfaces_atomic(
priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
ath9k_htc_vif_iter, priv);
if (priv->rearm_ani)
ath9k_htc_start_ani(priv);
if (priv->reconfig_beacon) {
ath9k_htc_ps_wakeup(priv);
ath9k_htc_beacon_reconfig(priv);
ath9k_htc_ps_restore(priv);
}
}
static void ath9k_htc_bssid_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct ath9k_vif_iter_data *iter_data = data;
int i;
if (iter_data->hw_macaddr != NULL) {
for (i = 0 ; i < ETH_ALEN; i++)
iter_data->mask[i] &= ~(iter_data->hw_macaddr[i] ^ mac[i]);
} else {
iter_data->hw_macaddr = mac;
}
}
static void ath9k_htc_set_mac_bssid_mask(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_vif_iter_data iter_data;
/*
* Pick the MAC address of the first interface as the new hardware
* MAC address . The hardware will use it together with the BSSID mask
* when matching addresses .
*/
iter_data.hw_macaddr = NULL;
eth_broadcast_addr(iter_data.mask);
if (vif)
ath9k_htc_bssid_iter(&iter_data, vif->addr, vif);
/* Get list of all active MAC addresses */
ieee80211_iterate_active_interfaces_atomic(
priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
ath9k_htc_bssid_iter, &iter_data);
memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
if (iter_data.hw_macaddr)
memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN);
ath_hw_setbssidmask(common);
}
static void ath9k_htc_set_opmode(struct ath9k_htc_priv *priv)
{
if (priv->num_ibss_vif)
priv->ah->opmode = NL80211_IFTYPE_ADHOC;
else if (priv->num_ap_vif)
priv->ah->opmode = NL80211_IFTYPE_AP;
else if (priv->num_mbss_vif)
priv->ah->opmode = NL80211_IFTYPE_MESH_POINT;
else
priv->ah->opmode = NL80211_IFTYPE_STATION;
ath9k_hw_setopmode(priv->ah);
}
void ath9k_htc_reset(struct ath9k_htc_priv *priv)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *channel = priv->hw->conf.chandef.chan;
struct ath9k_hw_cal_data *caldata = NULL;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
ath9k_htc_stop_ani(priv);
ieee80211_stop_queues(priv->hw);
timer_delete_sync(&priv->tx.cleanup_timer);
ath9k_htc_tx_drain(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
ath9k_wmi_event_drain(priv);
caldata = &priv->caldata;
ret = ath9k_hw_reset(ah, ah->curchan, caldata, false );
if (ret) {
ath_err(common,
"Unable to reset device (%u Mhz) reset status %d\n" ,
channel->center_freq, ret);
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, ah->curchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ENABLE_INTR_CMDID);
htc_start(priv->htc);
ath9k_htc_vif_reconfig(priv);
ieee80211_wake_queues(priv->hw);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
struct ieee80211_hw *hw,
struct ath9k_channel *hchan)
{
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_conf *conf = &common->hw->conf;
bool fastcc;
struct ieee80211_channel *channel = hw->conf.chandef.chan;
struct ath9k_hw_cal_data *caldata;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
int ret;
if (test_bit(ATH_OP_INVALID, &common->op_flags))
return -EIO;
fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
ath9k_htc_ps_wakeup(priv);
ath9k_htc_stop_ani(priv);
timer_delete_sync(&priv->tx.cleanup_timer);
ath9k_htc_tx_drain(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
ath9k_wmi_event_drain(priv);
ath_dbg(common, CONFIG,
"(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n" ,
priv->ah->curchan->channel,
channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
fastcc);
caldata = fastcc ? NULL : &priv->caldata;
ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
if (ret) {
ath_err(common,
"Unable to reset channel (%u Mhz) reset status %d\n" ,
channel->center_freq, ret);
goto err;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
WMI_CMD(WMI_START_RECV_CMDID);
if (ret)
goto err;
ath9k_host_rx_init(priv);
mode = ath9k_htc_get_curmode(priv, hchan);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
if (ret)
goto err;
WMI_CMD(WMI_ENABLE_INTR_CMDID);
if (ret)
goto err;
htc_start(priv->htc);
if (!test_bit(ATH_OP_SCANNING, &common->op_flags) &&
!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
ath9k_htc_vif_reconfig(priv);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
/* perform spectral scan if requested. */
if (test_bit(ATH_OP_SCANNING, &common->op_flags) &&
priv->spec_priv.spectral_mode == SPECTRAL_CHANSCAN)
ath9k_cmn_spectral_scan_trigger(common, &priv->spec_priv);
err:
ath9k_htc_ps_restore(priv);
return ret;
}
/*
* Monitor mode handling is a tad complicated because the firmware requires
* an interface to be created exclusively , while mac80211 doesn ' t associate
* an interface with the mode .
*
* So , for now , only one monitor interface can be configured .
*/
static void __ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_vif hvif;
int ret = 0 ;
u8 cmd_rsp;
memset(&hvif, 0 , sizeof (struct ath9k_htc_target_vif));
memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
hvif.index = priv->mon_vif_idx;
WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
if (ret) {
ath_err(common, "Unable to remove monitor interface at idx: %d\n" ,
priv->mon_vif_idx);
}
priv->nvifs--;
priv->vif_slot &= ~(1 << priv->mon_vif_idx);
}
static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_vif hvif;
struct ath9k_htc_target_sta tsta;
int ret = 0 , sta_idx;
u8 cmd_rsp;
if ((priv->nvifs >= ATH9K_HTC_MAX_VIF) ||
(priv->nstations >= ATH9K_HTC_MAX_STA)) {
ret = -ENOBUFS;
goto err_vif;
}
sta_idx = ffz(priv->sta_slot);
if ((sta_idx < 0 ) || (sta_idx > ATH9K_HTC_MAX_STA)) {
ret = -ENOBUFS;
goto err_vif;
}
/*
* Add an interface .
*/
memset(&hvif, 0 , sizeof (struct ath9k_htc_target_vif));
memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
hvif.opmode = HTC_M_MONITOR;
hvif.index = ffz(priv->vif_slot);
WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
if (ret)
goto err_vif;
/*
* Assign the monitor interface index as a special case here .
* This is needed when the interface is brought down .
*/
priv->mon_vif_idx = hvif.index;
priv->vif_slot |= (1 << hvif.index);
/*
* Set the hardware mode to monitor only if there are no
* other interfaces .
*/
if (!priv->nvifs)
priv->ah->opmode = NL80211_IFTYPE_MONITOR;
priv->nvifs++;
/*
* Associate a station with the interface for packet injection .
*/
memset(&tsta, 0 , sizeof (struct ath9k_htc_target_sta));
memcpy(&tsta.macaddr, common->macaddr, ETH_ALEN);
tsta.is_vif_sta = 1 ;
tsta.sta_index = sta_idx;
tsta.vif_index = hvif.index;
tsta.maxampdu = cpu_to_be16(0 xffff);
WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
if (ret) {
ath_err(common, "Unable to add station entry for monitor mode\n" );
goto err_sta;
}
priv->sta_slot |= (1 << sta_idx);
priv->nstations++;
priv->vif_sta_pos[priv->mon_vif_idx] = sta_idx;
priv->ah->is_monitoring = true ;
ath_dbg(common, CONFIG,
"Attached a monitor interface at idx: %d, sta idx: %d\n" ,
priv->mon_vif_idx, sta_idx);
return 0 ;
err_sta:
/*
* Remove the interface from the target .
*/
__ath9k_htc_remove_monitor_interface(priv);
err_vif:
ath_dbg(common, FATAL, "Unable to attach a monitor interface\n" );
return ret;
}
static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
int ret = 0 ;
u8 cmd_rsp, sta_idx;
__ath9k_htc_remove_monitor_interface(priv);
sta_idx = priv->vif_sta_pos[priv->mon_vif_idx];
WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
if (ret) {
ath_err(common, "Unable to remove station entry for monitor mode\n" );
return ret;
}
priv->sta_slot &= ~(1 << sta_idx);
priv->nstations--;
priv->ah->is_monitoring = false ;
ath_dbg(common, CONFIG,
"Removed a monitor interface at idx: %d, sta idx: %d\n" ,
priv->mon_vif_idx, sta_idx);
return 0 ;
}
static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_sta tsta;
struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
struct ath9k_htc_sta *ista;
int ret, sta_idx;
u8 cmd_rsp;
u16 maxampdu;
if (priv->nstations >= ATH9K_HTC_MAX_STA)
return -ENOBUFS;
sta_idx = ffz(priv->sta_slot);
if ((sta_idx < 0 ) || (sta_idx > ATH9K_HTC_MAX_STA))
return -ENOBUFS;
memset(&tsta, 0 , sizeof (struct ath9k_htc_target_sta));
if (sta) {
ista = (struct ath9k_htc_sta *) sta->drv_priv;
memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
ista->index = sta_idx;
tsta.is_vif_sta = 0 ;
maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
sta->deflink.ht_cap.ampdu_factor);
tsta.maxampdu = cpu_to_be16(maxampdu);
} else {
memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
tsta.is_vif_sta = 1 ;
tsta.maxampdu = cpu_to_be16(0 xffff);
}
tsta.sta_index = sta_idx;
tsta.vif_index = avp->index;
WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
if (ret) {
if (sta)
ath_err(common,
"Unable to add station entry for: %pM\n" ,
sta->addr);
return ret;
}
if (sta) {
ath_dbg(common, CONFIG,
"Added a station entry for: %pM (idx: %d)\n" ,
sta->addr, tsta.sta_index);
} else {
ath_dbg(common, CONFIG,
"Added a station entry for VIF %d (idx: %d)\n" ,
avp->index, tsta.sta_index);
}
priv->sta_slot |= (1 << sta_idx);
priv->nstations++;
if (!sta)
priv->vif_sta_pos[avp->index] = sta_idx;
return 0 ;
}
static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
struct ath9k_htc_sta *ista;
int ret;
u8 cmd_rsp, sta_idx;
if (sta) {
ista = (struct ath9k_htc_sta *) sta->drv_priv;
sta_idx = ista->index;
} else {
sta_idx = priv->vif_sta_pos[avp->index];
}
WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
if (ret) {
if (sta)
ath_err(common,
"Unable to remove station entry for: %pM\n" ,
sta->addr);
return ret;
}
if (sta) {
ath_dbg(common, CONFIG,
"Removed a station entry for: %pM (idx: %d)\n" ,
sta->addr, sta_idx);
} else {
ath_dbg(common, CONFIG,
"Removed a station entry for VIF %d (idx: %d)\n" ,
avp->index, sta_idx);
}
priv->sta_slot &= ~(1 << sta_idx);
priv->nstations--;
return 0 ;
}
int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv,
u8 enable_coex)
{
struct ath9k_htc_cap_target tcap;
int ret;
u8 cmd_rsp;
memset(&tcap, 0 , sizeof (struct ath9k_htc_cap_target));
tcap.ampdu_limit = cpu_to_be32(0 xffff);
tcap.ampdu_subframes = 0 xff;
tcap.enable_coex = enable_coex;
tcap.tx_chainmask = priv->ah->caps.tx_chainmask;
WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap);
return ret;
}
static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
struct ieee80211_sta *sta,
struct ath9k_htc_target_rate *trate)
{
struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
struct ieee80211_supported_band *sband;
u32 caps = 0 ;
int i, j;
sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band];
for (i = 0 , j = 0 ; i < sband->n_bitrates; i++) {
if (sta->deflink.supp_rates[sband->band] & BIT(i)) {
trate->rates.legacy_rates.rs_rates[j]
= (sband->bitrates[i].bitrate * 2 ) / 10 ;
j++;
}
}
trate->rates.legacy_rates.rs_nrates = j;
if (sta->deflink.ht_cap.ht_supported) {
for (i = 0 , j = 0 ; i < 77 ; i++) {
if (sta->deflink.ht_cap.mcs.rx_mask[i/8 ] & (1 <<(i%8 )))
trate->rates.ht_rates.rs_rates[j++] = i;
if (j == ATH_HTC_RATE_MAX)
break ;
}
trate->rates.ht_rates.rs_nrates = j;
caps = WLAN_RC_HT_FLAG;
if (sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_RX_STBC)
caps |= ATH_RC_TX_STBC_FLAG;
if (sta->deflink.ht_cap.mcs.rx_mask[1 ])
caps |= WLAN_RC_DS_FLAG;
if ((sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
(conf_is_ht40(&priv->hw->conf)))
caps |= WLAN_RC_40_FLAG;
if (conf_is_ht40(&priv->hw->conf) &&
(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
caps |= WLAN_RC_SGI_FLAG;
else if (conf_is_ht20(&priv->hw->conf) &&
(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20))
caps |= WLAN_RC_SGI_FLAG;
}
trate->sta_index = ista->index;
trate->isnew = 1 ;
trate->capflags = cpu_to_be32(caps);
}
static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv,
struct ath9k_htc_target_rate *trate)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
int ret;
u8 cmd_rsp;
WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate);
if (ret) {
ath_err(common,
"Unable to initialize Rate information on target\n" );
}
return ret;
}
static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
struct ieee80211_sta *sta)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_rate trate;
int ret;
memset(&trate, 0 , sizeof (struct ath9k_htc_target_rate));
ath9k_htc_setup_rate(priv, sta, &trate);
ret = ath9k_htc_send_rate_cmd(priv, &trate);
if (!ret)
ath_dbg(common, CONFIG,
"Updated target sta: %pM, rate caps: 0x%X\n" ,
sta->addr, be32_to_cpu(trate.capflags));
}
static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_rate trate;
struct ieee80211_sta *sta;
int ret;
memset(&trate, 0 , sizeof (struct ath9k_htc_target_rate));
rcu_read_lock();
sta = ieee80211_find_sta(vif, bss_conf->bssid);
if (!sta) {
rcu_read_unlock();
return ;
}
ath9k_htc_setup_rate(priv, sta, &trate);
rcu_read_unlock();
ret = ath9k_htc_send_rate_cmd(priv, &trate);
if (!ret)
ath_dbg(common, CONFIG,
"Updated target sta: %pM, rate caps: 0x%X\n" ,
bss_conf->bssid, be32_to_cpu(trate.capflags));
}
static int ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_ampdu_mlme_action action,
u16 tid)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_aggr aggr;
struct ath9k_htc_sta *ista;
int ret = 0 ;
u8 cmd_rsp;
if (tid >= ATH9K_HTC_MAX_TID)
return -EINVAL;
memset(&aggr, 0 , sizeof (struct ath9k_htc_target_aggr));
ista = (struct ath9k_htc_sta *) sta->drv_priv;
aggr.sta_index = ista->index;
aggr.tidno = tid & 0 xf;
aggr.aggr_enable = action == IEEE80211_AMPDU_TX_START;
WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
if (ret)
ath_dbg(common, CONFIG,
"Unable to %s TX aggregation for (%pM, %d)\n" ,
(aggr.aggr_enable) ? "start" : "stop" , sta->addr, tid);
else
ath_dbg(common, CONFIG,
"%s TX aggregation for (%pM, %d)\n" ,
(aggr.aggr_enable) ? "Starting" : "Stopping" ,
sta->addr, tid);
spin_lock_bh(&priv->tx.tx_lock);
ista->tid_state[tid] = (aggr.aggr_enable && !ret) ? AGGR_START : AGGR_STOP;
spin_unlock_bh(&priv->tx.tx_lock);
return ret;
}
/*******/
/* ANI */
/*******/
void ath9k_htc_start_ani(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
unsigned long timestamp = jiffies_to_msecs(jiffies);
common->ani.longcal_timer = timestamp;
common->ani.shortcal_timer = timestamp;
common->ani.checkani_timer = timestamp;
set_bit(ATH_OP_ANI_RUN, &common->op_flags);
ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
}
void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
cancel_delayed_work_sync(&priv->ani_work);
clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
}
void ath9k_htc_ani_work(struct work_struct *work)
{
struct ath9k_htc_priv *priv =
container_of(work, struct ath9k_htc_priv, ani_work.work);
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
bool longcal = false ;
bool shortcal = false ;
bool aniflag = false ;
unsigned int timestamp = jiffies_to_msecs(jiffies);
u32 cal_interval, short_cal_interval;
short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
/* Only calibrate if awake */
if (ah->power_mode != ATH9K_PM_AWAKE)
goto set_timer;
/* Long calibration runs independently of short calibration. */
if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
longcal = true ;
ath_dbg(common, ANI, "longcal @%lu\n" , jiffies);
common->ani.longcal_timer = timestamp;
}
/*
* Short calibration applies only while caldone
* is false or - ETIMEDOUT
*/
if (common->ani.caldone <= 0 ) {
if ((timestamp - common->ani.shortcal_timer) >=
short_cal_interval) {
shortcal = true ;
ath_dbg(common, ANI, "shortcal @%lu\n" , jiffies);
common->ani.shortcal_timer = timestamp;
common->ani.resetcal_timer = timestamp;
}
} else {
if ((timestamp - common->ani.resetcal_timer) >=
ATH_RESTART_CALINTERVAL) {
common->ani.caldone = ath9k_hw_reset_calvalid(ah);
if (common->ani.caldone)
common->ani.resetcal_timer = timestamp;
}
}
/* Verify whether we must check ANI */
if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
aniflag = true ;
common->ani.checkani_timer = timestamp;
}
/* Skip all processing if there's nothing to do. */
if (longcal || shortcal || aniflag) {
ath9k_htc_ps_wakeup(priv);
/* Call ANI routine if necessary */
if (aniflag)
ath9k_hw_ani_monitor(ah, ah->curchan);
/* Perform calibration if necessary */
if (longcal || shortcal)
common->ani.caldone =
ath9k_hw_calibrate(ah, ah->curchan,
ah->rxchainmask, longcal) > 0 ;
ath9k_htc_ps_restore(priv);
}
set_timer:
/*
* Set timer interval based on previous results .
* The interval must be the shortest necessary to satisfy ANI ,
* short calibration and long calibration .
*/
cal_interval = ATH_LONG_CALINTERVAL;
cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
/*
* Short calibration applies only while caldone
* is false or - ETIMEDOUT
*/
if (common->ani.caldone <= 0 )
cal_interval = min(cal_interval, (u32)short_cal_interval);
ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
msecs_to_jiffies(cal_interval));
}
/**********************/
/* mac80211 Callbacks */
/**********************/
static void ath9k_htc_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
int padpos, padsize, ret, slot;
hdr = (struct ieee80211_hdr *) skb->data;
/* Add the padding after the header if this is not already done */
padpos = ieee80211_hdrlen(hdr->frame_control);
padsize = padpos & 3 ;
if (padsize && skb->len > padpos) {
if (skb_headroom(skb) < padsize) {
ath_dbg(common, XMIT, "No room for padding\n" );
goto fail_tx;
}
skb_push(skb, padsize);
memmove(skb->data, skb->data + padsize, padpos);
}
slot = ath9k_htc_tx_get_slot(priv);
if (slot < 0 ) {
ath_dbg(common, XMIT, "No free TX slot\n" );
goto fail_tx;
}
ret = ath9k_htc_tx_start(priv, control->sta, skb, slot, false );
if (ret != 0 ) {
ath_dbg(common, XMIT, "Tx failed\n" );
goto clear_slot;
}
ath9k_htc_check_stop_queues(priv);
return ;
clear_slot:
ath9k_htc_tx_clear_slot(priv, slot);
fail_tx:
dev_kfree_skb_any(skb);
}
static int ath9k_htc_start(struct ieee80211_hw *hw)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
struct ath9k_channel *init_channel;
int ret = 0 ;
enum htc_phymode mode;
__be16 htc_mode;
u8 cmd_rsp;
mutex_lock(&priv->mutex);
ath_dbg(common, CONFIG,
"Starting driver with initial channel: %d MHz\n" ,
curchan->center_freq);
/* Ensure that HW is awake before flushing RX */
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
WMI_CMD(WMI_FLUSH_RECV_CMDID);
/* setup initial channel */
init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef);
ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false );
if (ret) {
ath_err(common,
"Unable to reset hardware; reset status %d (freq %u MHz)\n" ,
ret, curchan->center_freq);
mutex_unlock(&priv->mutex);
return ret;
}
ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
&priv->curtxpow);
mode = ath9k_htc_get_curmode(priv, init_channel);
htc_mode = cpu_to_be16(mode);
WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
WMI_CMD(WMI_ATH_INIT_CMDID);
WMI_CMD(WMI_START_RECV_CMDID);
ath9k_host_rx_init(priv);
ret = ath9k_htc_update_cap_target(priv, 0 );
if (ret)
ath_dbg(common, CONFIG,
"Failed to update capability in target\n" );
clear_bit(ATH_OP_INVALID, &common->op_flags);
htc_start(priv->htc);
spin_lock_bh(&priv->tx.tx_lock);
priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
spin_unlock_bh(&priv->tx.tx_lock);
ieee80211_wake_queues(hw);
mod_timer(&priv->tx.cleanup_timer,
jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
ath9k_htc_start_btcoex(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static void ath9k_htc_stop(struct ieee80211_hw *hw, bool suspend)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
int ret __attribute__ ((unused));
u8 cmd_rsp;
mutex_lock(&priv->mutex);
if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
ath_dbg(common, ANY, "Device not present\n" );
mutex_unlock(&priv->mutex);
return ;
}
ath9k_htc_ps_wakeup(priv);
WMI_CMD(WMI_DISABLE_INTR_CMDID);
WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
WMI_CMD(WMI_STOP_RECV_CMDID);
tasklet_kill(&priv->rx_tasklet);
timer_delete_sync(&priv->tx.cleanup_timer);
ath9k_htc_tx_drain(priv);
ath9k_wmi_event_drain(priv);
mutex_unlock(&priv->mutex);
/* Cancel all the running timers/work .. */
cancel_work_sync(&priv->fatal_work);
cancel_work_sync(&priv->ps_work);
#ifdef CONFIG_MAC80211_LEDS
cancel_work_sync(&priv->led_work);
#endif
ath9k_htc_stop_ani(priv);
mutex_lock(&priv->mutex);
ath9k_htc_stop_btcoex(priv);
/* Remove a monitor interface if it's present. */
if (priv->ah->is_monitoring)
ath9k_htc_remove_monitor_interface(priv);
ath9k_hw_phy_disable(ah);
ath9k_hw_disable(ah);
ath9k_htc_ps_restore(priv);
ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
set_bit(ATH_OP_INVALID, &common->op_flags);
ath_dbg(common, CONFIG, "Driver halt\n" );
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_vif hvif;
int ret = 0 ;
u8 cmd_rsp;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
memset(&hvif, 0 , sizeof (struct ath9k_htc_target_vif));
memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
hvif.opmode = HTC_M_STA;
break ;
case NL80211_IFTYPE_ADHOC:
hvif.opmode = HTC_M_IBSS;
break ;
case NL80211_IFTYPE_AP:
hvif.opmode = HTC_M_HOSTAP;
break ;
case NL80211_IFTYPE_MESH_POINT:
hvif.opmode = HTC_M_WDS; /* close enough */
break ;
default :
ath_err(common,
"Interface type %d not yet supported\n" , vif->type);
ret = -EOPNOTSUPP;
goto out;
}
/* Index starts from zero on the target */
avp->index = hvif.index = ffz(priv->vif_slot);
hvif.rtsthreshold = cpu_to_be16(2304 );
WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
if (ret)
goto out;
/*
* We need a node in target to tx mgmt frames
* before association .
*/
ret = ath9k_htc_add_station(priv, vif, NULL);
if (ret) {
WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
goto out;
}
ath9k_htc_set_mac_bssid_mask(priv, vif);
priv->vif_slot |= (1 << avp->index);
priv->nvifs++;
INC_VIF(priv, vif->type);
if ((vif->type == NL80211_IFTYPE_AP) ||
(vif->type == NL80211_IFTYPE_MESH_POINT) ||
(vif->type == NL80211_IFTYPE_ADHOC))
ath9k_htc_assign_bslot(priv, vif);
ath9k_htc_set_opmode(priv);
if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
!test_bit(ATH_OP_ANI_RUN, &common->op_flags)) {
ath9k_hw_set_tsfadjust(priv->ah, true );
ath9k_htc_start_ani(priv);
}
ath_dbg(common, CONFIG, "Attach a VIF of type: %d at idx: %d\n" ,
vif->type, avp->index);
out:
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
struct ath9k_htc_target_vif hvif;
int ret = 0 ;
u8 cmd_rsp;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
memset(&hvif, 0 , sizeof (struct ath9k_htc_target_vif));
memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
hvif.index = avp->index;
WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
if (ret) {
ath_err(common, "Unable to remove interface at idx: %d\n" ,
avp->index);
}
priv->nvifs--;
priv->vif_slot &= ~(1 << avp->index);
if (priv->csa_vif == vif)
priv->csa_vif = NULL;
ath9k_htc_remove_station(priv, vif, NULL);
DEC_VIF(priv, vif->type);
if ((vif->type == NL80211_IFTYPE_AP) ||
vif->type == NL80211_IFTYPE_MESH_POINT ||
(vif->type == NL80211_IFTYPE_ADHOC))
ath9k_htc_remove_bslot(priv, vif);
ath9k_htc_set_opmode(priv);
ath9k_htc_set_mac_bssid_mask(priv, vif);
/*
* Stop ANI only if there are no associated station interfaces .
*/
if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0 )) {
priv->rearm_ani = false ;
ieee80211_iterate_active_interfaces_atomic(
priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
ath9k_htc_vif_iter, priv);
if (!priv->rearm_ani)
ath9k_htc_stop_ani(priv);
}
ath_dbg(common, CONFIG, "Detach Interface at idx: %d\n" , avp->index);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_config(struct ieee80211_hw *hw, int radio_idx, u32 changed)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ieee80211_conf *conf = &hw->conf;
bool chip_reset = false ;
int ret = 0 ;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
if (changed & IEEE80211_CONF_CHANGE_IDLE) {
mutex_lock(&priv->htc_pm_lock);
priv->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE);
if (!priv->ps_idle)
chip_reset = true ;
mutex_unlock(&priv->htc_pm_lock);
}
/*
* Monitor interface should be added before
* IEEE80211_CONF_CHANGE_CHANNEL is handled .
*/
if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
if ((conf->flags & IEEE80211_CONF_MONITOR) &&
!priv->ah->is_monitoring)
ath9k_htc_add_monitor_interface(priv);
else if (priv->ah->is_monitoring)
ath9k_htc_remove_monitor_interface(priv);
}
if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || chip_reset) {
struct ieee80211_channel *curchan = hw->conf.chandef.chan;
int pos = curchan->hw_value;
ath_dbg(common, CONFIG, "Set channel: %d MHz\n" ,
curchan->center_freq);
ath9k_cmn_get_channel(hw, priv->ah, &hw->conf.chandef);
if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0 ) {
ath_err(common, "Unable to set channel\n" );
ret = -EINVAL;
goto out;
}
}
if (changed & IEEE80211_CONF_CHANGE_PS) {
if (conf->flags & IEEE80211_CONF_PS) {
ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
priv->ps_enabled = true ;
} else {
priv->ps_enabled = false ;
cancel_work_sync(&priv->ps_work);
ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
}
}
if (changed & IEEE80211_CONF_CHANGE_POWER) {
priv->txpowlimit = 2 * conf->power_level;
ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
priv->txpowlimit, &priv->curtxpow);
}
out:
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
#define SUPPORTED_FILTERS \
(FIF_ALLMULTI | \
FIF_CONTROL | \
FIF_PSPOLL | \
FIF_OTHER_BSS | \
FIF_BCN_PRBRESP_PROMISC | \
FIF_PROBE_REQ | \
FIF_MCAST_ACTION | \
FIF_FCSFAIL)
static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,
u64 multicast)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
u32 rfilt;
mutex_lock(&priv->mutex);
*total_flags &= SUPPORTED_FILTERS;
if (test_bit(ATH_OP_INVALID, &common->op_flags)) {
ath_dbg(ath9k_hw_common(priv->ah), ANY,
"Unable to configure filter on invalid state\n" );
mutex_unlock(&priv->mutex);
return ;
}
ath9k_htc_ps_wakeup(priv);
priv->rxfilter = *total_flags;
rfilt = ath9k_htc_calcrxfilter(priv);
ath9k_hw_setrxfilter(priv->ah, rfilt);
ath_dbg(ath9k_hw_common(priv->ah), CONFIG, "Set HW RX filter: 0x%x\n" ,
rfilt);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static void ath9k_htc_sta_rc_update_work(struct work_struct *work)
{
struct ath9k_htc_sta *ista =
container_of(work, struct ath9k_htc_sta, rc_update_work);
struct ieee80211_sta *sta =
container_of((void *)ista, struct ieee80211_sta, drv_priv);
struct ath9k_htc_priv *priv = ista->htc_priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_rate trate;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
memset(&trate, 0 , sizeof (struct ath9k_htc_target_rate));
ath9k_htc_setup_rate(priv, sta, &trate);
if (!ath9k_htc_send_rate_cmd(priv, &trate))
ath_dbg(common, CONFIG,
"Supported rates for sta: %pM updated, rate caps: 0x%X\n" ,
sta->addr, be32_to_cpu(trate.capflags));
else
ath_dbg(common, CONFIG,
"Unable to update supported rates for sta: %pM\n" ,
sta->addr);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
int ret;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
ret = ath9k_htc_add_station(priv, vif, sta);
if (!ret) {
INIT_WORK(&ista->rc_update_work, ath9k_htc_sta_rc_update_work);
ista->htc_priv = priv;
ath9k_htc_init_rate(priv, sta);
}
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
int ret;
cancel_work_sync(&ista->rc_update_work);
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
htc_sta_drain(priv->htc, ista->index);
ret = ath9k_htc_remove_station(priv, vif, sta);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static void ath9k_htc_sta_rc_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_link_sta *link_sta,
u32 changed)
{
struct ieee80211_sta *sta = link_sta->sta;
struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
if (!(changed & IEEE80211_RC_SUPP_RATES_CHANGED))
return ;
schedule_work(&ista->rc_update_work);
}
static int ath9k_htc_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
unsigned int link_id, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_tx_queue_info qi;
int ret = 0 , qnum;
if (queue >= IEEE80211_NUM_ACS)
return 0 ;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
memset(&qi, 0 , sizeof (struct ath9k_tx_queue_info));
qi.tqi_aifs = params->aifs;
qi.tqi_cwmin = params->cw_min;
qi.tqi_cwmax = params->cw_max;
qi.tqi_burstTime = params->txop * 32 ;
qnum = get_hw_qnum(queue, priv->hwq_map);
ath_dbg(common, CONFIG,
"Configure tx [queue/hwq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n" ,
queue, qnum, params->aifs, params->cw_min,
params->cw_max, params->txop);
ret = ath_htc_txq_update(priv, qnum, &qi);
if (ret) {
ath_err(common, "TXQ Update failed\n" );
goto out;
}
if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
(qnum == priv->hwq_map[IEEE80211_AC_BE]))
ath9k_htc_beaconq_config(priv);
out:
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static int ath9k_htc_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 ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
int ret = 0 ;
if (htc_modparam_nohwcrypt)
return -ENOSPC;
if ((vif->type == NL80211_IFTYPE_ADHOC ||
vif->type == NL80211_IFTYPE_MESH_POINT) &&
(key->cipher == WLAN_CIPHER_SUITE_TKIP ||
key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
/*
* For now , disable hw crypto for the RSN IBSS group keys . This
* could be optimized in the future to use a modified key cache
* design to support per - STA RX GTK , but until that gets
* implemented , use of software crypto for group addressed
* frames is a acceptable to allow RSN IBSS to be used .
*/
return -EOPNOTSUPP;
}
mutex_lock(&priv->mutex);
ath_dbg(common, CONFIG, "Set HW Key\n" );
ath9k_htc_ps_wakeup(priv);
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 (priv->ah->sw_mgmt_crypto_tx &&
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;
}
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
{
struct ath_common *common = ath9k_hw_common(priv->ah);
ath9k_hw_write_associd(priv->ah);
ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n" ,
common->curbssid, common->curaid);
}
static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = data;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
if ((vif->type == NL80211_IFTYPE_STATION) && vif->cfg.assoc) {
common->curaid = vif->cfg.aid;
common->last_rssi = ATH_RSSI_DUMMY_MARKER;
memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);
}
}
static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
{
if (priv->num_sta_assoc_vif == 1 ) {
ieee80211_iterate_active_interfaces_atomic(
priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
ath9k_htc_bss_iter, priv);
ath9k_htc_set_bssid(priv);
}
}
static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
u64 changed)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath_common *common = ath9k_hw_common(ah);
int slottime;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
if (changed & BSS_CHANGED_ASSOC) {
ath_dbg(common, CONFIG, "BSS Changed ASSOC %d\n" ,
vif->cfg.assoc);
vif->cfg.assoc ?
priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
if (!vif->cfg.assoc)
clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags);
if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
ath9k_htc_choose_set_bssid(priv);
if (vif->cfg.assoc && (priv->num_sta_assoc_vif == 1 ))
ath9k_htc_start_ani(priv);
else if (priv->num_sta_assoc_vif == 0 )
ath9k_htc_stop_ani(priv);
}
}
if (changed & BSS_CHANGED_IBSS) {
if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
common->curaid = vif->cfg.aid;
memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
ath9k_htc_set_bssid(priv);
}
}
if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
ath_dbg(common, CONFIG, "Beacon enabled for BSS: %pM\n" ,
bss_conf->bssid);
ath9k_htc_set_tsfadjust(priv, vif);
priv->cur_beacon_conf.enable_beacon = 1 ;
ath9k_htc_beacon_config(priv, vif);
}
if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
/*
* Disable SWBA interrupt only if there are no
* concurrent AP / mesh or IBSS interfaces .
*/
if ((priv->num_ap_vif + priv->num_mbss_vif <= 1 ) ||
priv->num_ibss_vif) {
ath_dbg(common, CONFIG,
"Beacon disabled for BSS: %pM\n" ,
bss_conf->bssid);
priv->cur_beacon_conf.enable_beacon = 0 ;
ath9k_htc_beacon_config(priv, vif);
}
}
if (changed & BSS_CHANGED_BEACON_INT) {
/*
* Reset the HW TSF for the first AP or mesh interface .
*/
if (priv->nvifs == 1 &&
((priv->ah->opmode == NL80211_IFTYPE_AP &&
vif->type == NL80211_IFTYPE_AP &&
priv->num_ap_vif == 1 ) ||
(priv->ah->opmode == NL80211_IFTYPE_MESH_POINT &&
vif->type == NL80211_IFTYPE_MESH_POINT &&
priv->num_mbss_vif == 1 ))) {
set_bit(OP_TSF_RESET, &priv->op_flags);
}
ath_dbg(common, CONFIG,
"Beacon interval changed for BSS: %pM\n" ,
bss_conf->bssid);
ath9k_htc_beacon_config(priv, vif);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
if (bss_conf->use_short_slot)
slottime = 9 ;
else
slottime = 20 ;
if (vif->type == NL80211_IFTYPE_AP) {
/*
* Defer update , so that connected stations can adjust
* their settings at the same time .
* See beacon . c for more details
*/
priv->beacon.slottime = slottime;
priv->beacon.updateslot = UPDATE;
} else {
ah->slottime = slottime;
ath9k_hw_init_global_settings(ah);
}
}
if (changed & BSS_CHANGED_HT)
ath9k_htc_update_rate(priv, vif, bss_conf);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
u64 tsf;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
tsf = ath9k_hw_gettsf64(priv->ah);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return tsf;
}
static void ath9k_htc_set_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u64 tsf)
{
struct ath9k_htc_priv *priv = hw->priv;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
ath9k_hw_settsf64(priv->ah, tsf);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
ath9k_hw_reset_tsf(priv->ah);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath9k_htc_sta *ista;
int ret = 0 ;
struct ieee80211_sta *sta = params->sta;
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
switch (action) {
case IEEE80211_AMPDU_RX_START:
break ;
case IEEE80211_AMPDU_RX_STOP:
break ;
case IEEE80211_AMPDU_TX_START:
ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
if (!ret)
ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
break ;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break ;
case IEEE80211_AMPDU_TX_OPERATIONAL:
if (tid >= ATH9K_HTC_MAX_TID) {
ret = -EINVAL;
break ;
}
ista = (struct ath9k_htc_sta *) sta->drv_priv;
spin_lock_bh(&priv->tx.tx_lock);
ista->tid_state[tid] = AGGR_OPERATIONAL;
spin_unlock_bh(&priv->tx.tx_lock);
break ;
default :
ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n" );
}
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
return ret;
}
static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
mutex_lock(&priv->mutex);
spin_lock_bh(&priv->beacon_lock);
set_bit(ATH_OP_SCANNING, &common->op_flags);
spin_unlock_bh(&priv->beacon_lock);
cancel_work_sync(&priv->ps_work);
ath9k_htc_stop_ani(priv);
mutex_unlock(&priv->mutex);
}
static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
mutex_lock(&priv->mutex);
spin_lock_bh(&priv->beacon_lock);
clear_bit(ATH_OP_SCANNING, &common->op_flags);
spin_unlock_bh(&priv->beacon_lock);
ath9k_htc_ps_wakeup(priv);
ath9k_htc_vif_reconfig(priv);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw,
int radio_idx, u32 value)
{
return 0 ;
}
static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
int radio_idx,
s16 coverage_class)
{
struct ath9k_htc_priv *priv = hw->priv;
mutex_lock(&priv->mutex);
ath9k_htc_ps_wakeup(priv);
priv->ah->coverage_class = coverage_class;
ath9k_hw_init_global_settings(priv->ah);
ath9k_htc_ps_restore(priv);
mutex_unlock(&priv->mutex);
}
/*
* Currently , this is used only for selecting the minimum rate
* for management frames , rate selection for data frames remain
* unaffected .
*/
static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const struct cfg80211_bitrate_mask *mask)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_common *common = ath9k_hw_common(priv->ah);
struct ath9k_htc_target_rate_mask tmask;
struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
int ret = 0 ;
u8 cmd_rsp;
memset(&tmask, 0 , sizeof (struct ath9k_htc_target_rate_mask));
tmask.vif_index = avp->index;
tmask.band = NL80211_BAND_2GHZ;
tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_2GHZ].legacy);
WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
if (ret) {
ath_err(common,
"Unable to set 2G rate mask for "
"interface at idx: %d\n" , avp->index);
goto out;
}
tmask.band = NL80211_BAND_5GHZ;
tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_5GHZ].legacy);
WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
if (ret) {
ath_err(common,
"Unable to set 5G rate mask for "
"interface at idx: %d\n" , avp->index);
goto out;
}
ath_dbg(common, CONFIG, "Set bitrate masks: 0x%x, 0x%x\n" ,
mask->control[NL80211_BAND_2GHZ].legacy,
mask->control[NL80211_BAND_5GHZ].legacy);
out:
return ret;
}
static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
struct ieee80211_low_level_stats *stats)
{
struct ath9k_htc_priv *priv = hw->priv;
struct ath_hw *ah = priv->ah;
struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
stats->dot11RTSFailureCount = mib_stats->rts_bad;
stats->dot11FCSErrorCount = mib_stats->fcs_bad;
stats->dot11RTSSuccessCount = mib_stats->rts_good;
return 0 ;
}
struct base_eep_header *ath9k_htc_get_eeprom_base(struct ath9k_htc_priv *priv)
{
struct base_eep_header *pBase = NULL;
/*
* This can be done since all the 3 EEPROM families have the
* same base header upto a certain point , and we are interested in
* the data only upto that point .
*/
if (AR_SREV_9271(priv->ah))
pBase = (struct base_eep_header *)
&priv->ah->eeprom.map4k.baseEepHeader;
else if (priv->ah->hw_version.usbdev == AR9280_USB)
pBase = (struct base_eep_header *)
&priv->ah->eeprom.def.baseEepHeader;
else if (priv->ah->hw_version.usbdev == AR9287_USB)
pBase = (struct base_eep_header *)
&priv->ah->eeprom.map9287.baseEepHeader;
return pBase;
}
static int ath9k_htc_get_antenna(struct ieee80211_hw *hw, int radio_idx,
u32 *tx_ant, u32 *rx_ant)
{
struct ath9k_htc_priv *priv = hw->priv;
struct base_eep_header *pBase = ath9k_htc_get_eeprom_base(priv);
if (pBase) {
*tx_ant = pBase->txMask;
*rx_ant = pBase->rxMask;
} else {
*tx_ant = 0 ;
*rx_ant = 0 ;
}
return 0 ;
}
static void ath9k_htc_channel_switch_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct cfg80211_chan_def *chandef)
{
struct ath9k_htc_priv *priv = hw->priv;
/* mac80211 does not support CSA in multi-if cases (yet) */
if (WARN_ON(priv->csa_vif))
return ;
priv->csa_vif = vif;
}
struct ieee80211_ops ath9k_htc_ops = {
.add_chanctx = ieee80211_emulate_add_chanctx,
.remove_chanctx = ieee80211_emulate_remove_chanctx,
.change_chanctx = ieee80211_emulate_change_chanctx,
.switch_vif_chanctx = ieee80211_emulate_switch_vif_chanctx,
.tx = ath9k_htc_tx,
.wake_tx_queue = ieee80211_handle_wake_tx_queue,
.start = ath9k_htc_start,
.stop = ath9k_htc_stop,
.add_interface = ath9k_htc_add_interface,
.remove_interface = ath9k_htc_remove_interface,
.config = ath9k_htc_config,
.configure_filter = ath9k_htc_configure_filter,
.sta_add = ath9k_htc_sta_add,
.sta_remove = ath9k_htc_sta_remove,
.conf_tx = ath9k_htc_conf_tx,
.link_sta_rc_update = ath9k_htc_sta_rc_update,
.bss_info_changed = ath9k_htc_bss_info_changed,
.set_key = ath9k_htc_set_key,
.get_tsf = ath9k_htc_get_tsf,
.set_tsf = ath9k_htc_set_tsf,
.reset_tsf = ath9k_htc_reset_tsf,
.ampdu_action = ath9k_htc_ampdu_action,
.sw_scan_start = ath9k_htc_sw_scan_start,
.sw_scan_complete = ath9k_htc_sw_scan_complete,
.set_rts_threshold = ath9k_htc_set_rts_threshold,
.rfkill_poll = ath9k_htc_rfkill_poll_state,
.set_coverage_class = ath9k_htc_set_coverage_class,
.set_bitrate_mask = ath9k_htc_set_bitrate_mask,
.get_stats = ath9k_htc_get_stats,
.get_antenna = ath9k_htc_get_antenna,
.channel_switch_beacon = ath9k_htc_channel_switch_beacon,
#ifdef CONFIG_ATH9K_HTC_DEBUGFS
.get_et_sset_count = ath9k_htc_get_et_sset_count,
.get_et_stats = ath9k_htc_get_et_stats,
.get_et_strings = ath9k_htc_get_et_strings,
#endif
};
Messung V0.5 in Prozent C=98 H=94 G=95
¤ Dauer der Verarbeitung: 0.39 Sekunden
(vorverarbeitet am 2026-10-02)
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