drivers/net/wireless/mediatek/mt76/mt76x02_mac.h - linux - Git at Google

 /*
  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
  *
  * 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.
  */

 #ifndef __MT76X02_MAC_H
 #define __MT76X02_MAC_H

 #include <linux/average.h>

 struct mt76x02_dev;

 struct mt76x02_tx_status {
 	u8 valid:1;
 	u8 success:1;
 	u8 aggr:1;
 	u8 ack_req:1;
 	u8 wcid;
 	u8 pktid;
 	u8 retry;
 	u16 rate;
 } __packed __aligned(2);

 #define MT_VIF_WCID(_n)		(254 - ((_n) & 7))
 #define MT_MAX_VIFS		8

 struct mt76x02_vif {
 	struct mt76_wcid group_wcid; /* must be first */
 	u8 idx;
 };

 DECLARE_EWMA(signal, 10, 8);

 struct mt76x02_sta {
 	struct mt76_wcid wcid; /* must be first */

 	struct mt76x02_vif *vif;
 	struct mt76x02_tx_status status;
 	int n_frames;

 	struct ewma_signal rssi;
 	int inactive_count;
 };

 #define MT_RXINFO_BA			BIT(0)
 #define MT_RXINFO_DATA			BIT(1)
 #define MT_RXINFO_NULL			BIT(2)
 #define MT_RXINFO_FRAG			BIT(3)
 #define MT_RXINFO_UNICAST		BIT(4)
 #define MT_RXINFO_MULTICAST		BIT(5)
 #define MT_RXINFO_BROADCAST		BIT(6)
 #define MT_RXINFO_MYBSS			BIT(7)
 #define MT_RXINFO_CRCERR		BIT(8)
 #define MT_RXINFO_ICVERR		BIT(9)
 #define MT_RXINFO_MICERR		BIT(10)
 #define MT_RXINFO_AMSDU			BIT(11)
 #define MT_RXINFO_HTC			BIT(12)
 #define MT_RXINFO_RSSI			BIT(13)
 #define MT_RXINFO_L2PAD			BIT(14)
 #define MT_RXINFO_AMPDU			BIT(15)
 #define MT_RXINFO_DECRYPT		BIT(16)
 #define MT_RXINFO_BSSIDX3		BIT(17)
 #define MT_RXINFO_WAPI_KEY		BIT(18)
 #define MT_RXINFO_PN_LEN		GENMASK(21, 19)
 #define MT_RXINFO_SW_FTYPE0		BIT(22)
 #define MT_RXINFO_SW_FTYPE1		BIT(23)
 #define MT_RXINFO_PROBE_RESP		BIT(24)
 #define MT_RXINFO_BEACON		BIT(25)
 #define MT_RXINFO_DISASSOC		BIT(26)
 #define MT_RXINFO_DEAUTH		BIT(27)
 #define MT_RXINFO_ACTION		BIT(28)
 #define MT_RXINFO_TCP_SUM_ERR		BIT(30)
 #define MT_RXINFO_IP_SUM_ERR		BIT(31)

 #define MT_RXWI_CTL_WCID		GENMASK(7, 0)
 #define MT_RXWI_CTL_KEY_IDX		GENMASK(9, 8)
 #define MT_RXWI_CTL_BSS_IDX		GENMASK(12, 10)
 #define MT_RXWI_CTL_UDF			GENMASK(15, 13)
 #define MT_RXWI_CTL_MPDU_LEN		GENMASK(29, 16)
 #define MT_RXWI_CTL_EOF			BIT(31)

 #define MT_RXWI_TID			GENMASK(3, 0)
 #define MT_RXWI_SN			GENMASK(15, 4)

 #define MT_RXWI_RATE_INDEX		GENMASK(5, 0)
 #define MT_RXWI_RATE_LDPC		BIT(6)
 #define MT_RXWI_RATE_BW			GENMASK(8, 7)
 #define MT_RXWI_RATE_SGI		BIT(9)
 #define MT_RXWI_RATE_STBC		BIT(10)
 #define MT_RXWI_RATE_LDPC_EXSYM		BIT(11)
 #define MT_RXWI_RATE_PHY		GENMASK(15, 13)

 #define MT_RATE_INDEX_VHT_IDX		GENMASK(3, 0)
 #define MT_RATE_INDEX_VHT_NSS		GENMASK(5, 4)

 struct mt76x02_rxwi {
 	__le32 rxinfo;

 	__le32 ctl;

 	__le16 tid_sn;
 	__le16 rate;

 	u8 rssi[4];

 	__le32 bbp_rxinfo[4];
 };

 #define MT_TX_PWR_ADJ			GENMASK(3, 0)

 enum mt76x2_phy_bandwidth {
 	MT_PHY_BW_20,
 	MT_PHY_BW_40,
 	MT_PHY_BW_80,
 };

 #define MT_TXWI_FLAGS_FRAG		BIT(0)
 #define MT_TXWI_FLAGS_MMPS		BIT(1)
 #define MT_TXWI_FLAGS_CFACK		BIT(2)
 #define MT_TXWI_FLAGS_TS		BIT(3)
 #define MT_TXWI_FLAGS_AMPDU		BIT(4)
 #define MT_TXWI_FLAGS_MPDU_DENSITY	GENMASK(7, 5)
 #define MT_TXWI_FLAGS_TXOP		GENMASK(9, 8)
 #define MT_TXWI_FLAGS_NDPS		BIT(10)
 #define MT_TXWI_FLAGS_RTSBWSIG		BIT(11)
 #define MT_TXWI_FLAGS_NDP_BW		GENMASK(13, 12)
 #define MT_TXWI_FLAGS_SOUND		BIT(14)
 #define MT_TXWI_FLAGS_TX_RATE_LUT	BIT(15)

 #define MT_TXWI_ACK_CTL_REQ		BIT(0)
 #define MT_TXWI_ACK_CTL_NSEQ		BIT(1)
 #define MT_TXWI_ACK_CTL_BA_WINDOW	GENMASK(7, 2)

 struct mt76x02_txwi {
 	__le16 flags;
 	__le16 rate;
 	u8 ack_ctl;
 	u8 wcid;
 	__le16 len_ctl;
 	__le32 iv;
 	__le32 eiv;
 	u8 aid;
 	u8 txstream;
 	u8 ctl2;
 	u8 pktid;
 } __packed __aligned(4);

 static inline bool mt76x02_wait_for_mac(struct mt76_dev *dev)
 {
 	const u32 MAC_CSR0 = 0x1000;
 	int i;

 	for (i = 0; i < 500; i++) {
 		if (test_bit(MT76_REMOVED, &dev->state))
 			return false;

 		switch (dev->bus->rr(dev, MAC_CSR0)) {
 		case 0:
 		case ~0:
 			break;
 		default:
 			return true;
 		}
 		usleep_range(5000, 10000);
 	}
 	return false;
 }

 void mt76x02_mac_set_short_preamble(struct mt76x02_dev *dev, bool enable);
 int mt76x02_mac_shared_key_setup(struct mt76x02_dev *dev, u8 vif_idx,
 				 u8 key_idx, struct ieee80211_key_conf *key);
 int mt76x02_mac_wcid_set_key(struct mt76x02_dev *dev, u8 idx,
 			     struct ieee80211_key_conf *key);
 void mt76x02_mac_wcid_setup(struct mt76x02_dev *dev, u8 idx, u8 vif_idx,
 			    u8 *mac);
 void mt76x02_mac_wcid_set_drop(struct mt76x02_dev *dev, u8 idx, bool drop);
 void mt76x02_mac_wcid_set_rate(struct mt76x02_dev *dev, struct mt76_wcid *wcid,
 			       const struct ieee80211_tx_rate *rate);
 bool mt76x02_mac_load_tx_status(struct mt76x02_dev *dev,
 				struct mt76x02_tx_status *stat);
 void mt76x02_send_tx_status(struct mt76x02_dev *dev,
 			    struct mt76x02_tx_status *stat, u8 *update);
 int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
 			   void *rxi);
 void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, u32 val);
 void mt76x02_mac_setaddr(struct mt76x02_dev *dev, u8 *addr);
 void mt76x02_mac_write_txwi(struct mt76x02_dev *dev, struct mt76x02_txwi *txwi,
 			    struct sk_buff *skb, struct mt76_wcid *wcid,
 			    struct ieee80211_sta *sta, int len);
 void mt76x02_mac_poll_tx_status(struct mt76x02_dev *dev, bool irq);
 void mt76x02_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue *q,
 			     struct mt76_queue_entry *e, bool flush);
 void mt76x02_update_channel(struct mt76_dev *mdev);
 void mt76x02_mac_work(struct work_struct *work);

 void mt76x02_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8 *addr);
 int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx,
 			   struct sk_buff *skb);
 void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev, u8 vif_idx,
 				   bool val);
 #endif
	/*
	* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
	* Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
	*
	* 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.
	*/

	#ifndef __MT76X02_MAC_H
	#define __MT76X02_MAC_H

	#include <linux/average.h>

	struct mt76x02_dev;

	struct mt76x02_tx_status {
	u8 valid:1;
	u8 success:1;
	u8 aggr:1;
	u8 ack_req:1;
	u8 wcid;
	u8 pktid;
	u8 retry;
	u16 rate;
	} __packed __aligned(2);

	#define MT_VIF_WCID(_n) (254 - ((_n) & 7))
	#define MT_MAX_VIFS 8

	struct mt76x02_vif {
	struct mt76_wcid group_wcid; /* must be first */
	u8 idx;
	};

	DECLARE_EWMA(signal, 10, 8);

	struct mt76x02_sta {
	struct mt76_wcid wcid; /* must be first */

	struct mt76x02_vif *vif;
	struct mt76x02_tx_status status;
	int n_frames;

	struct ewma_signal rssi;
	int inactive_count;
	};

	#define MT_RXINFO_BA BIT(0)
	#define MT_RXINFO_DATA BIT(1)
	#define MT_RXINFO_NULL BIT(2)
	#define MT_RXINFO_FRAG BIT(3)
	#define MT_RXINFO_UNICAST BIT(4)
	#define MT_RXINFO_MULTICAST BIT(5)
	#define MT_RXINFO_BROADCAST BIT(6)
	#define MT_RXINFO_MYBSS BIT(7)
	#define MT_RXINFO_CRCERR BIT(8)
	#define MT_RXINFO_ICVERR BIT(9)
	#define MT_RXINFO_MICERR BIT(10)
	#define MT_RXINFO_AMSDU BIT(11)
	#define MT_RXINFO_HTC BIT(12)
	#define MT_RXINFO_RSSI BIT(13)
	#define MT_RXINFO_L2PAD BIT(14)
	#define MT_RXINFO_AMPDU BIT(15)
	#define MT_RXINFO_DECRYPT BIT(16)
	#define MT_RXINFO_BSSIDX3 BIT(17)
	#define MT_RXINFO_WAPI_KEY BIT(18)
	#define MT_RXINFO_PN_LEN GENMASK(21, 19)
	#define MT_RXINFO_SW_FTYPE0 BIT(22)
	#define MT_RXINFO_SW_FTYPE1 BIT(23)
	#define MT_RXINFO_PROBE_RESP BIT(24)
	#define MT_RXINFO_BEACON BIT(25)
	#define MT_RXINFO_DISASSOC BIT(26)
	#define MT_RXINFO_DEAUTH BIT(27)
	#define MT_RXINFO_ACTION BIT(28)
	#define MT_RXINFO_TCP_SUM_ERR BIT(30)
	#define MT_RXINFO_IP_SUM_ERR BIT(31)

	#define MT_RXWI_CTL_WCID GENMASK(7, 0)
	#define MT_RXWI_CTL_KEY_IDX GENMASK(9, 8)
	#define MT_RXWI_CTL_BSS_IDX GENMASK(12, 10)
	#define MT_RXWI_CTL_UDF GENMASK(15, 13)
	#define MT_RXWI_CTL_MPDU_LEN GENMASK(29, 16)
	#define MT_RXWI_CTL_EOF BIT(31)

	#define MT_RXWI_TID GENMASK(3, 0)
	#define MT_RXWI_SN GENMASK(15, 4)

	#define MT_RXWI_RATE_INDEX GENMASK(5, 0)
	#define MT_RXWI_RATE_LDPC BIT(6)
	#define MT_RXWI_RATE_BW GENMASK(8, 7)
	#define MT_RXWI_RATE_SGI BIT(9)
	#define MT_RXWI_RATE_STBC BIT(10)
	#define MT_RXWI_RATE_LDPC_EXSYM BIT(11)
	#define MT_RXWI_RATE_PHY GENMASK(15, 13)

	#define MT_RATE_INDEX_VHT_IDX GENMASK(3, 0)
	#define MT_RATE_INDEX_VHT_NSS GENMASK(5, 4)

	struct mt76x02_rxwi {
	__le32 rxinfo;

	__le32 ctl;

	__le16 tid_sn;
	__le16 rate;

	u8 rssi[4];

	__le32 bbp_rxinfo[4];
	};

	#define MT_TX_PWR_ADJ GENMASK(3, 0)

	enum mt76x2_phy_bandwidth {
	MT_PHY_BW_20,
	MT_PHY_BW_40,
	MT_PHY_BW_80,
	};

	#define MT_TXWI_FLAGS_FRAG BIT(0)
	#define MT_TXWI_FLAGS_MMPS BIT(1)
	#define MT_TXWI_FLAGS_CFACK BIT(2)
	#define MT_TXWI_FLAGS_TS BIT(3)
	#define MT_TXWI_FLAGS_AMPDU BIT(4)
	#define MT_TXWI_FLAGS_MPDU_DENSITY GENMASK(7, 5)
	#define MT_TXWI_FLAGS_TXOP GENMASK(9, 8)
	#define MT_TXWI_FLAGS_NDPS BIT(10)
	#define MT_TXWI_FLAGS_RTSBWSIG BIT(11)
	#define MT_TXWI_FLAGS_NDP_BW GENMASK(13, 12)
	#define MT_TXWI_FLAGS_SOUND BIT(14)
	#define MT_TXWI_FLAGS_TX_RATE_LUT BIT(15)

	#define MT_TXWI_ACK_CTL_REQ BIT(0)
	#define MT_TXWI_ACK_CTL_NSEQ BIT(1)
	#define MT_TXWI_ACK_CTL_BA_WINDOW GENMASK(7, 2)

	struct mt76x02_txwi {
	__le16 flags;
	__le16 rate;
	u8 ack_ctl;
	u8 wcid;
	__le16 len_ctl;
	__le32 iv;
	__le32 eiv;
	u8 aid;
	u8 txstream;
	u8 ctl2;
	u8 pktid;
	} __packed __aligned(4);

	static inline bool mt76x02_wait_for_mac(struct mt76_dev *dev)
	{
	const u32 MAC_CSR0 = 0x1000;
	int i;

	for (i = 0; i < 500; i++) {
	if (test_bit(MT76_REMOVED, &dev->state))
	return false;

	switch (dev->bus->rr(dev, MAC_CSR0)) {
	case 0:
	case ~0:
	break;
	default:
	return true;
	}
	usleep_range(5000, 10000);
	}
	return false;
	}

	void mt76x02_mac_set_short_preamble(struct mt76x02_dev *dev, bool enable);
	int mt76x02_mac_shared_key_setup(struct mt76x02_dev *dev, u8 vif_idx,
	u8 key_idx, struct ieee80211_key_conf *key);
	int mt76x02_mac_wcid_set_key(struct mt76x02_dev *dev, u8 idx,
	struct ieee80211_key_conf *key);
	void mt76x02_mac_wcid_setup(struct mt76x02_dev *dev, u8 idx, u8 vif_idx,
	u8 *mac);
	void mt76x02_mac_wcid_set_drop(struct mt76x02_dev *dev, u8 idx, bool drop);
	void mt76x02_mac_wcid_set_rate(struct mt76x02_dev dev, struct mt76_wcid wcid,
	const struct ieee80211_tx_rate *rate);
	bool mt76x02_mac_load_tx_status(struct mt76x02_dev *dev,
	struct mt76x02_tx_status *stat);
	void mt76x02_send_tx_status(struct mt76x02_dev *dev,
	struct mt76x02_tx_status stat, u8 update);
	int mt76x02_mac_process_rx(struct mt76x02_dev dev, struct sk_buff skb,
	void *rxi);
	void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, u32 val);
	void mt76x02_mac_setaddr(struct mt76x02_dev dev, u8 addr);
	void mt76x02_mac_write_txwi(struct mt76x02_dev dev, struct mt76x02_txwi txwi,
	struct sk_buff skb, struct mt76_wcid wcid,
	struct ieee80211_sta *sta, int len);
	void mt76x02_mac_poll_tx_status(struct mt76x02_dev *dev, bool irq);
	void mt76x02_tx_complete_skb(struct mt76_dev mdev, struct mt76_queue q,
	struct mt76_queue_entry *e, bool flush);
	void mt76x02_update_channel(struct mt76_dev *mdev);
	void mt76x02_mac_work(struct work_struct *work);

	void mt76x02_mac_set_bssid(struct mt76x02_dev dev, u8 idx, const u8 addr);
	int mt76x02_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx,
	struct sk_buff *skb);
	void mt76x02_mac_set_beacon_enable(struct mt76x02_dev *dev, u8 vif_idx,
	bool val);
	#endif