forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
426 lines
10 KiB
426 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
|
* Copyright (C) 2014 Felix Fietkau <[email protected]> |
|
* Copyright (C) 2015 Jakub Kicinski <[email protected]> |
|
*/ |
|
|
|
#include "mt7601u.h" |
|
#include "mac.h" |
|
#include <linux/etherdevice.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 (!ether_addr_equal(dev->macaddr, vif->addr)) |
|
mt7601u_set_macaddr(dev, vif->addr); |
|
|
|
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); |
|
|
|
ieee80211_queue_delayed_work(dev->hw, &dev->cal_work, |
|
MT_CALIBRATE_INTERVAL); |
|
if (dev->freq_cal.enabled) |
|
ieee80211_queue_delayed_work(dev->hw, &dev->freq_cal.work, |
|
MT_FREQ_CAL_INIT_DELAY); |
|
} |
|
|
|
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; |
|
|
|
/* fall back to sw encryption for unsupported ciphers */ |
|
switch (key->cipher) { |
|
case WLAN_CIPHER_SUITE_WEP40: |
|
case WLAN_CIPHER_SUITE_WEP104: |
|
case WLAN_CIPHER_SUITE_TKIP: |
|
case WLAN_CIPHER_SUITE_CCMP: |
|
break; |
|
default: |
|
return -EOPNOTSUPP; |
|
} |
|
|
|
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, |
|
struct ieee80211_ampdu_params *params) |
|
{ |
|
struct mt7601u_dev *dev = hw->priv; |
|
struct ieee80211_sta *sta = params->sta; |
|
enum ieee80211_ampdu_mlme_action action = params->action; |
|
u16 tid = params->tid; |
|
u16 ssn = params->ssn; |
|
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; |
|
return IEEE80211_AMPDU_TX_START_IMMEDIATE; |
|
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, |
|
};
|
|
|