[v2,11/12] mt76x0: main file

Message ID	1530875029-26274-12-git-send-email-sgruszka@redhat.com (mailing list archive)
State	Changes Requested
Delegated to:	Kalle Valo
Headers	show Return-Path: <linux-wireless-owner@kernel.org> From: Stanislaw Gruszka <sgruszka@redhat.com> To: linux-wireless@vger.kernel.org Cc: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>, Felix Fietkau <nbd@nbd.name>, Hans Ulli Kroll <ulli.kroll@googlemail.com>, Jakub Kicinski <kubakici@wp.pl>, Michal Schmidt <mschmidt@redhat.com>, linux-mediatek@lists.infradead.org, Stanislaw Gruszka <sgruszka@redhat.com> Subject: [PATCH v2 11/12] mt76x0: main file Date: Fri, 6 Jul 2018 13:03:48 +0200 Message-Id: <1530875029-26274-12-git-send-email-sgruszka@redhat.com> In-Reply-To: <1530875029-26274-1-git-send-email-sgruszka@redhat.com> References: <1530875029-26274-1-git-send-email-sgruszka@redhat.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/main.c b/drivers/net/wireless/mediatek/mt76/mt76x0/main.c new file mode 100644 index 000000000000..0c521f3485c9 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/main.c @@ -0,0 +1,403 @@ +/* + * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> + * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> + * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@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 "mt76x0.h" +#include "mac.h" +#include <linux/etherdevice.h> + +static int mt76x0_start(struct ieee80211_hw *hw) +{ + struct mt76x0_dev *dev = hw->priv; + int ret; + + mutex_lock(&dev->mutex); + + ret = mt76x0_mac_start(dev); + if (ret) + goto out; + + ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work, + MT_CALIBRATE_INTERVAL); + ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work, + MT_CALIBRATE_INTERVAL); +out: + mutex_unlock(&dev->mutex); + return ret; +} + +static void mt76x0_stop(struct ieee80211_hw *hw) +{ + struct mt76x0_dev *dev = hw->priv; + + mutex_lock(&dev->mutex); + + cancel_delayed_work_sync(&dev->cal_work); + cancel_delayed_work_sync(&dev->mac_work); + mt76x0_mac_stop(dev); + + mutex_unlock(&dev->mutex); +} + + +static int mt76x0_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct mt76x0_dev *dev = hw->priv; + struct mt76_vif *mvif = (struct mt76_vif *) vif->drv_priv; + unsigned int idx; + + idx = ffs(~dev->vif_mask); + if (!idx || idx > 8) + return -ENOSPC; + + idx--; + dev->vif_mask |= BIT(idx); + + mvif->idx = idx; + mvif->group_wcid.idx = GROUP_WCID(idx); + mvif->group_wcid.hw_key_idx = -1; + + return 0; +} + +static void mt76x0_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct mt76x0_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 mt76x0_config(struct ieee80211_hw *hw, u32 changed) +{ + struct mt76x0_dev *dev = hw->priv; + int ret = 0; + + mutex_lock(&dev->mutex); + + if (changed & IEEE80211_CONF_CHANGE_MONITOR) { + if (!(hw->conf.flags & IEEE80211_CONF_MONITOR)) + dev->rxfilter |= MT_RX_FILTR_CFG_PROMISC; + else + dev->rxfilter &= ~MT_RX_FILTR_CFG_PROMISC; + + mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter); + } + + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + ieee80211_stop_queues(hw); + ret = mt76x0_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 mt76x0_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(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 +mt76x0_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, u32 changed) +{ + struct mt76x0_dev *dev = hw->priv; + + mutex_lock(&dev->mutex); + + if (changed & BSS_CHANGED_ASSOC) + mt76x0_phy_con_cal_onoff(dev, info); + + if (changed & BSS_CHANGED_BSSID) { + mt76x0_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)) + mt76x0_mac_config_tsf(dev, false, 0); + } + + if (changed & BSS_CHANGED_BASIC_RATES) { + mt76_wr(dev, MT_LEGACY_BASIC_RATE, info->basic_rates); + mt76_wr(dev, MT_HT_FBK_CFG0, 0x65432100); + mt76_wr(dev, MT_HT_FBK_CFG1, 0xedcba980); + mt76_wr(dev, MT_LG_FBK_CFG0, 0xedcba988); + mt76_wr(dev, MT_LG_FBK_CFG1, 0x00002100); + } + + if (changed & BSS_CHANGED_BEACON_INT) + mt76x0_mac_config_tsf(dev, true, info->beacon_int); + + if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT) + mt76x0_mac_set_protection(dev, info->use_cts_prot, + info->ht_operation_mode); + + if (changed & BSS_CHANGED_ERP_PREAMBLE) + mt76x0_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) + mt76x0_phy_recalibrate_after_assoc(dev); + + mutex_unlock(&dev->mutex); +} + +static int +mt76x0_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76x0_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->wcid_mask, ARRAY_SIZE(dev->wcid)); + if (idx < 0) { + ret = -ENOSPC; + goto out; + } + + msta->wcid.idx = idx; + msta->wcid.hw_key_idx = -1; + mt76x0_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); + mt76x0_mac_set_ampdu_factor(dev); + +out: + mutex_unlock(&dev->mutex); + + return ret; +} + +static int +mt76x0_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct mt76x0_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); + mt76x0_mac_wcid_setup(dev, idx, 0, NULL); + mt76x0_mac_set_ampdu_factor(dev); + mutex_unlock(&dev->mutex); + + return 0; +} + +static void +mt76x0_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + enum sta_notify_cmd cmd, struct ieee80211_sta *sta) +{ +} + +static void +mt76x0_sw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const u8 *mac_addr) +{ + struct mt76x0_dev *dev = hw->priv; + + cancel_delayed_work_sync(&dev->cal_work); + mt76x0_agc_save(dev); + set_bit(MT76_SCANNING, &dev->mt76.state); +} + +static void +mt76x0_sw_scan_complete(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct mt76x0_dev *dev = hw->priv; + + mt76x0_agc_restore(dev); + clear_bit(MT76_SCANNING, &dev->mt76.state); + + ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work, + MT_CALIBRATE_INTERVAL); +} + +static int +mt76x0_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 mt76x0_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 mt76x0_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct mt76x0_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 mt76x0_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 > N_WCIDS); + + 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 mt76x0_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 mt76x0_ops = { + .tx = mt76x0_tx, + .start = mt76x0_start, + .stop = mt76x0_stop, + .add_interface = mt76x0_add_interface, + .remove_interface = mt76x0_remove_interface, + .config = mt76x0_config, + .configure_filter = mt76_configure_filter, + .bss_info_changed = mt76x0_bss_info_changed, + .sta_add = mt76x0_sta_add, + .sta_remove = mt76x0_sta_remove, + .sta_notify = mt76x0_sta_notify, + .set_key = mt76x0_set_key, + .conf_tx = mt76x0_conf_tx, + .sw_scan_start = mt76x0_sw_scan, + .sw_scan_complete = mt76x0_sw_scan_complete, + .ampdu_action = mt76_ampdu_action, + .sta_rate_tbl_update = mt76_sta_rate_tbl_update, + .set_rts_threshold = mt76x0_set_rts_threshold, +};

[v2,11/12] mt76x0: main file

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