leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
90c88dab8e
linux/drivers/net/wireless/mediatek/mt7601u/main.c
Thomas Gleixner 1802d0beec treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 655 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:41 -07:00

428 lines
11 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
*/
#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;
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,
};
Reference in New Issue View Git Blame Copy Permalink