mt76: move txrx shared routines in mt76x02_txrx.c

Add mt76x02_txrx.c source file in order to contain tx/rx shared
routines for mt76x0 and mt76x2 drivers

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 162 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_txrx.c b/drivers/net/wireless/mediatek/mt76/mt76x02_txrx.c
new file mode 100644
index 000000000000..caa9bb107e68
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_txrx.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
+ *
+ * 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 <linux/kernel.h>
+
+#include "mt76.h"
+#include "mt76x02_regs.h"
+#include "mt76x02_dma.h"
+#include "mt76x02_util.h"
+
+void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
+		struct sk_buff *skb)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+	struct mt76x02_dev *dev = hw->priv;
+	struct ieee80211_vif *vif = info->control.vif;
+	struct mt76_wcid *wcid = &dev->mt76.global_wcid;
+
+	if (control->sta) {
+		struct mt76x02_sta *msta;
+
+		msta = (struct mt76x02_sta *)control->sta->drv_priv;
+		wcid = &msta->wcid;
+		/* sw encrypted frames */
+		if (!info->control.hw_key && wcid->hw_key_idx != 0xff)
+			control->sta = NULL;
+	}
+
+	if (vif && !control->sta) {
+		struct mt76x02_vif *mvif;
+
+		mvif = (struct mt76x02_vif *)vif->drv_priv;
+		wcid = &mvif->group_wcid;
+	}
+
+	mt76_tx(&dev->mt76, control->sta, wcid, skb);
+}
+EXPORT_SYMBOL_GPL(mt76x02_tx);
+
+void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
+			  struct sk_buff *skb)
+{
+	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
+	void *rxwi = skb->data;
+
+	if (q == MT_RXQ_MCU) {
+		/* this is used just by mmio code */
+		skb_queue_tail(&mdev->mmio.mcu.res_q, skb);
+		wake_up(&mdev->mmio.mcu.wait);
+		return;
+	}
+
+	skb_pull(skb, sizeof(struct mt76x02_rxwi));
+	if (mt76x02_mac_process_rx(dev, skb, rxwi)) {
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	mt76_rx(mdev, q, skb);
+}
+EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
+
+s8 mt76x02_tx_get_max_txpwr_adj(struct mt76_dev *dev,
+				const struct ieee80211_tx_rate *rate)
+{
+	s8 max_txpwr;
+
+	if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
+		u8 mcs = ieee80211_rate_get_vht_mcs(rate);
+
+		if (mcs == 8 || mcs == 9) {
+			max_txpwr = dev->rate_power.vht[8];
+		} else {
+			u8 nss, idx;
+
+			nss = ieee80211_rate_get_vht_nss(rate);
+			idx = ((nss - 1) << 3) + mcs;
+			max_txpwr = dev->rate_power.ht[idx & 0xf];
+		}
+	} else if (rate->flags & IEEE80211_TX_RC_MCS) {
+		max_txpwr = dev->rate_power.ht[rate->idx & 0xf];
+	} else {
+		enum nl80211_band band = dev->chandef.chan->band;
+
+		if (band == NL80211_BAND_2GHZ) {
+			const struct ieee80211_rate *r;
+			struct wiphy *wiphy = dev->hw->wiphy;
+			struct mt76_rate_power *rp = &dev->rate_power;
+
+			r = &wiphy->bands[band]->bitrates[rate->idx];
+			if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
+				max_txpwr = rp->cck[r->hw_value & 0x3];
+			else
+				max_txpwr = rp->ofdm[r->hw_value & 0x7];
+		} else {
+			max_txpwr = dev->rate_power.ofdm[rate->idx & 0x7];
+		}
+	}
+
+	return max_txpwr;
+}
+EXPORT_SYMBOL_GPL(mt76x02_tx_get_max_txpwr_adj);
+
+static void mt76x02_remove_dma_hdr(struct sk_buff *skb)
+{
+	int hdr_len;
+
+	skb_pull(skb, sizeof(struct mt76x02_txwi) + MT_DMA_HDR_LEN);
+	hdr_len = ieee80211_get_hdrlen_from_skb(skb);
+	if (hdr_len % 4)
+		mt76x02_remove_hdr_pad(skb, 2);
+}
+
+void mt76x02_tx_complete(struct mt76_dev *dev, struct sk_buff *skb)
+{
+	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+
+	if (info->flags & IEEE80211_TX_CTL_AMPDU) {
+		ieee80211_free_txskb(dev->hw, skb);
+	} else {
+		ieee80211_tx_info_clear_status(info);
+		info->status.rates[0].idx = -1;
+		info->flags |= IEEE80211_TX_STAT_ACK;
+		ieee80211_tx_status(dev->hw, skb);
+	}
+}
+EXPORT_SYMBOL_GPL(mt76x02_tx_complete);
+
+void mt76x02_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue *q,
+			     struct mt76_queue_entry *e, bool flush)
+{
+	mt76x02_remove_dma_hdr(e->skb);
+	mt76x02_tx_complete(mdev, e->skb);
+}
+EXPORT_SYMBOL_GPL(mt76x02_tx_complete_skb);
+
+bool mt76x02_tx_status_data(struct mt76_dev *dev, u8 *update)
+{
+	struct mt76x02_tx_status stat;
+
+	if (!mt76x02_mac_load_tx_status(dev, &stat))
+		return false;
+
+	mt76x02_send_tx_status(dev, &stat, update);
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);