--- /dev/null
+/*
+ * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
+ * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "mt7601u.h"
+#include "mac.h"
+#include <linux/etherdevice.h>
+#include <linux/version.h>
+
+static int mt7601u_start(struct ieee80211_hw *hw)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ int ret;
+
+ mutex_lock(&dev->mutex);
+
+ ret = mt7601u_mac_start(dev);
+ if (ret)
+ goto out;
+
+ ieee80211_queue_delayed_work(dev->hw, &dev->mac_work,
+ MT_CALIBRATE_INTERVAL);
+ ieee80211_queue_delayed_work(dev->hw, &dev->cal_work,
+ MT_CALIBRATE_INTERVAL);
+out:
+ mutex_unlock(&dev->mutex);
+ return ret;
+}
+
+static void mt7601u_stop(struct ieee80211_hw *hw)
+{
+ struct mt7601u_dev *dev = hw->priv;
+
+ mutex_lock(&dev->mutex);
+
+ cancel_delayed_work_sync(&dev->cal_work);
+ cancel_delayed_work_sync(&dev->mac_work);
+ mt7601u_mac_stop(dev);
+
+ mutex_unlock(&dev->mutex);
+}
+
+static int mt7601u_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
+ unsigned int idx = 0;
+ unsigned int wcid = GROUP_WCID(idx);
+
+ /* Note: for AP do the AP-STA things mt76 does:
+ * - beacon offsets
+ * - do mac address tricks
+ * - shift vif idx
+ */
+ mvif->idx = idx;
+
+ if (dev->wcid_mask[wcid / BITS_PER_LONG] & BIT(wcid % BITS_PER_LONG))
+ return -ENOSPC;
+ dev->wcid_mask[wcid / BITS_PER_LONG] |= BIT(wcid % BITS_PER_LONG);
+ mvif->group_wcid.idx = wcid;
+ mvif->group_wcid.hw_key_idx = -1;
+
+ return 0;
+}
+
+static void mt7601u_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
+ unsigned int wcid = mvif->group_wcid.idx;
+
+ dev->wcid_mask[wcid / BITS_PER_LONG] &= ~BIT(wcid % BITS_PER_LONG);
+}
+
+static int mt7601u_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ int ret = 0;
+
+ mutex_lock(&dev->mutex);
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ ieee80211_stop_queues(hw);
+ ret = mt7601u_phy_set_channel(dev, &hw->conf.chandef);
+ ieee80211_wake_queues(hw);
+ }
+
+ mutex_unlock(&dev->mutex);
+
+ return ret;
+}
+
+static void
+mt76_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
+ unsigned int *total_flags, u64 multicast)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ u32 flags = 0;
+
+#define MT76_FILTER(_flag, _hw) do { \
+ flags |= *total_flags & FIF_##_flag; \
+ dev->rxfilter &= ~(_hw); \
+ dev->rxfilter |= !(flags & FIF_##_flag) * (_hw); \
+ } while (0)
+
+ mutex_lock(&dev->mutex);
+
+ dev->rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
+
+ MT76_FILTER(OTHER_BSS, MT_RX_FILTR_CFG_PROMISC);
+ MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
+ MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
+ MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
+ MT_RX_FILTR_CFG_CTS |
+ MT_RX_FILTR_CFG_CFEND |
+ MT_RX_FILTR_CFG_CFACK |
+ MT_RX_FILTR_CFG_BA |
+ MT_RX_FILTR_CFG_CTRL_RSV);
+ MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
+
+ *total_flags = flags;
+ mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
+
+ mutex_unlock(&dev->mutex);
+}
+
+static void
+mt7601u_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 changed)
+{
+ struct mt7601u_dev *dev = hw->priv;
+
+ mutex_lock(&dev->mutex);
+
+ if (changed & BSS_CHANGED_ASSOC)
+ mt7601u_phy_con_cal_onoff(dev, info);
+
+ if (changed & BSS_CHANGED_BSSID) {
+ mt7601u_addr_wr(dev, MT_MAC_BSSID_DW0, info->bssid);
+
+ /* Note: this is a hack because beacon_int is not changed
+ * on leave nor is any more appropriate event generated.
+ * rt2x00 doesn't seem to be bothered though.
+ */
+ if (is_zero_ether_addr(info->bssid))
+ mt7601u_mac_config_tsf(dev, false, 0);
+ }
+
+ if (changed & BSS_CHANGED_BASIC_RATES) {
+ mt7601u_wr(dev, MT_LEGACY_BASIC_RATE, info->basic_rates);
+ mt7601u_wr(dev, MT_HT_FBK_CFG0, 0x65432100);
+ mt7601u_wr(dev, MT_HT_FBK_CFG1, 0xedcba980);
+ mt7601u_wr(dev, MT_LG_FBK_CFG0, 0xedcba988);
+ mt7601u_wr(dev, MT_LG_FBK_CFG1, 0x00002100);
+ }
+
+ if (changed & BSS_CHANGED_BEACON_INT)
+ mt7601u_mac_config_tsf(dev, true, info->beacon_int);
+
+ if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
+ mt7601u_mac_set_protection(dev, info->use_cts_prot,
+ info->ht_operation_mode);
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE)
+ mt7601u_mac_set_short_preamble(dev, info->use_short_preamble);
+
+ if (changed & BSS_CHANGED_ERP_SLOT) {
+ int slottime = info->use_short_slot ? 9 : 20;
+
+ mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
+ MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
+ }
+
+ if (changed & BSS_CHANGED_ASSOC)
+ mt7601u_phy_recalibrate_after_assoc(dev);
+
+ mutex_unlock(&dev->mutex);
+}
+
+static int
+mt76_wcid_alloc(struct mt7601u_dev *dev)
+{
+ int i, idx = 0;
+
+ for (i = 0; i < ARRAY_SIZE(dev->wcid_mask); i++) {
+ idx = ffs(~dev->wcid_mask[i]);
+ if (!idx)
+ continue;
+
+ idx--;
+ dev->wcid_mask[i] |= BIT(idx);
+ break;
+ }
+
+ idx = i * BITS_PER_LONG + idx;
+ if (idx > 119)
+ return -1;
+
+ return idx;
+}
+
+static int
+mt7601u_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
+ struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
+ int ret = 0;
+ int idx = 0;
+
+ mutex_lock(&dev->mutex);
+
+ idx = mt76_wcid_alloc(dev);
+ if (idx < 0) {
+ ret = -ENOSPC;
+ goto out;
+ }
+
+ msta->wcid.idx = idx;
+ msta->wcid.hw_key_idx = -1;
+ mt7601u_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
+ mt76_clear(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
+ rcu_assign_pointer(dev->wcid[idx], &msta->wcid);
+ mt7601u_mac_set_ampdu_factor(dev);
+
+out:
+ mutex_unlock(&dev->mutex);
+
+ return ret;
+}
+
+static int
+mt7601u_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
+ int idx = msta->wcid.idx;
+
+ mutex_lock(&dev->mutex);
+ rcu_assign_pointer(dev->wcid[idx], NULL);
+ mt76_set(dev, MT_WCID_DROP(idx), MT_WCID_DROP_MASK(idx));
+ dev->wcid_mask[idx / BITS_PER_LONG] &= ~BIT(idx % BITS_PER_LONG);
+ mt7601u_mac_wcid_setup(dev, idx, 0, NULL);
+ mt7601u_mac_set_ampdu_factor(dev);
+ mutex_unlock(&dev->mutex);
+
+ return 0;
+}
+
+static void
+mt7601u_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd, struct ieee80211_sta *sta)
+{
+}
+
+static void
+mt7601u_sw_scan(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ const u8 *mac_addr)
+{
+ struct mt7601u_dev *dev = hw->priv;
+
+ mt7601u_agc_save(dev);
+ set_bit(MT7601U_STATE_SCANNING, &dev->state);
+}
+
+static void
+mt7601u_sw_scan_complete(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt7601u_dev *dev = hw->priv;
+
+ mt7601u_agc_restore(dev);
+ clear_bit(MT7601U_STATE_SCANNING, &dev->state);
+}
+
+static int
+mt7601u_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 mt7601u_dev *dev = hw->priv;
+ struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv;
+ struct mt76_sta *msta = sta ? (struct mt76_sta *) sta->drv_priv : NULL;
+ struct mt76_wcid *wcid = msta ? &msta->wcid : &mvif->group_wcid;
+ int idx = key->keyidx;
+ int ret;
+
+ if (cmd == SET_KEY) {
+ key->hw_key_idx = wcid->idx;
+ wcid->hw_key_idx = idx;
+ } else {
+ if (idx == wcid->hw_key_idx)
+ wcid->hw_key_idx = -1;
+
+ key = NULL;
+ }
+
+ if (!msta) {
+ if (key || wcid->hw_key_idx == idx) {
+ ret = mt76_mac_wcid_set_key(dev, wcid->idx, key);
+ if (ret)
+ return ret;
+ }
+
+ return mt76_mac_shared_key_setup(dev, mvif->idx, idx, key);
+ }
+
+ return mt76_mac_wcid_set_key(dev, msta->wcid.idx, key);
+}
+
+static int mt7601u_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ struct mt7601u_dev *dev = hw->priv;
+
+ mt76_rmw_field(dev, MT_TX_RTS_CFG, MT_TX_RTS_CFG_THRESH, value);
+
+ return 0;
+}
+
+static int
+mt76_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta, u16 tid, u16 *ssn, u8 buf_size,
+ bool amsdu)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
+
+ WARN_ON(msta->wcid.idx > GROUP_WCID(0));
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
+ BIT(16 + tid));
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ ieee80211_send_bar(vif, sta->addr, tid, msta->agg_ssn[tid]);
+ break;
+ case IEEE80211_AMPDU_TX_STOP_FLUSH:
+ case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ msta->agg_ssn[tid] = *ssn << 4;
+ ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+ case IEEE80211_AMPDU_TX_STOP_CONT:
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+ }
+
+ return 0;
+}
+
+static void
+mt76_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7601u_dev *dev = hw->priv;
+ struct mt76_sta *msta = (struct mt76_sta *) sta->drv_priv;
+ struct ieee80211_sta_rates *rates;
+ struct ieee80211_tx_rate rate = {};
+
+ rcu_read_lock();
+ rates = rcu_dereference(sta->rates);
+
+ if (!rates)
+ goto out;
+
+ rate.idx = rates->rate[0].idx;
+ rate.flags = rates->rate[0].flags;
+ mt76_mac_wcid_set_rate(dev, &msta->wcid, &rate);
+
+out:
+ rcu_read_unlock();
+}
+
+const struct ieee80211_ops mt7601u_ops = {
+ .tx = mt7601u_tx,
+ .start = mt7601u_start,
+ .stop = mt7601u_stop,
+ .add_interface = mt7601u_add_interface,
+ .remove_interface = mt7601u_remove_interface,
+ .config = mt7601u_config,
+ .configure_filter = mt76_configure_filter,
+ .bss_info_changed = mt7601u_bss_info_changed,
+ .sta_add = mt7601u_sta_add,
+ .sta_remove = mt7601u_sta_remove,
+ .sta_notify = mt7601u_sta_notify,
+ .set_key = mt7601u_set_key,
+ .conf_tx = mt7601u_conf_tx,
+ .sw_scan_start = mt7601u_sw_scan,
+ .sw_scan_complete = mt7601u_sw_scan_complete,
+ .ampdu_action = mt76_ampdu_action,
+ .sta_rate_tbl_update = mt76_sta_rate_tbl_update,
+ .set_rts_threshold = mt7601u_set_rts_threshold,
+};
Code Review / kvmfornfv.git / blobdiff