1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
4  * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
5  */
6 
7 #ifndef __MT76_MAC_H
8 #define __MT76_MAC_H
9 
10 struct mt76_tx_status {
11 	u8 valid:1;
12 	u8 success:1;
13 	u8 aggr:1;
14 	u8 ack_req:1;
15 	u8 is_probe:1;
16 	u8 wcid;
17 	u8 pktid;
18 	u8 retry;
19 	u16 rate;
20 } __packed __aligned(2);
21 
22 /* Note: values in original "RSSI" and "SNR" fields are not actually what they
23  *	 are called for MT7601U, names used by this driver are educated guesses
24  *	 (see vendor mac/ral_omac.c).
25  */
26 struct mt7601u_rxwi {
27 	__le32 rxinfo;
28 
29 	__le32 ctl;
30 
31 	__le16 frag_sn;
32 	__le16 rate;
33 
34 	u8 unknown;
35 	u8 zero[3];
36 
37 	u8 snr;
38 	u8 ant;
39 	u8 gain;
40 	u8 freq_off;
41 
42 	__le32 resv2;
43 	__le32 expert_ant;
44 } __packed __aligned(4);
45 
46 #define MT_RXINFO_BA			BIT(0)
47 #define MT_RXINFO_DATA			BIT(1)
48 #define MT_RXINFO_NULL			BIT(2)
49 #define MT_RXINFO_FRAG			BIT(3)
50 #define MT_RXINFO_U2M			BIT(4)
51 #define MT_RXINFO_MULTICAST		BIT(5)
52 #define MT_RXINFO_BROADCAST		BIT(6)
53 #define MT_RXINFO_MYBSS			BIT(7)
54 #define MT_RXINFO_CRCERR		BIT(8)
55 #define MT_RXINFO_ICVERR		BIT(9)
56 #define MT_RXINFO_MICERR		BIT(10)
57 #define MT_RXINFO_AMSDU			BIT(11)
58 #define MT_RXINFO_HTC			BIT(12)
59 #define MT_RXINFO_RSSI			BIT(13)
60 #define MT_RXINFO_L2PAD			BIT(14)
61 #define MT_RXINFO_AMPDU			BIT(15)
62 #define MT_RXINFO_DECRYPT		BIT(16)
63 #define MT_RXINFO_BSSIDX3		BIT(17)
64 #define MT_RXINFO_WAPI_KEY		BIT(18)
65 #define MT_RXINFO_PN_LEN		GENMASK(21, 19)
66 #define MT_RXINFO_SW_PKT_80211		BIT(22)
67 #define MT_RXINFO_TCP_SUM_BYPASS	BIT(28)
68 #define MT_RXINFO_IP_SUM_BYPASS		BIT(29)
69 #define MT_RXINFO_TCP_SUM_ERR		BIT(30)
70 #define MT_RXINFO_IP_SUM_ERR		BIT(31)
71 
72 #define MT_RXWI_CTL_WCID		GENMASK(7, 0)
73 #define MT_RXWI_CTL_KEY_IDX		GENMASK(9, 8)
74 #define MT_RXWI_CTL_BSS_IDX		GENMASK(12, 10)
75 #define MT_RXWI_CTL_UDF			GENMASK(15, 13)
76 #define MT_RXWI_CTL_MPDU_LEN		GENMASK(27, 16)
77 #define MT_RXWI_CTL_TID			GENMASK(31, 28)
78 
79 #define MT_RXWI_FRAG			GENMASK(3, 0)
80 #define MT_RXWI_SN			GENMASK(15, 4)
81 
82 #define MT_RXWI_RATE_MCS		GENMASK(6, 0)
83 #define MT_RXWI_RATE_BW			BIT(7)
84 #define MT_RXWI_RATE_SGI		BIT(8)
85 #define MT_RXWI_RATE_STBC		GENMASK(10, 9)
86 #define MT_RXWI_RATE_ETXBF		BIT(11)
87 #define MT_RXWI_RATE_SND		BIT(12)
88 #define MT_RXWI_RATE_ITXBF		BIT(13)
89 #define MT_RXWI_RATE_PHY		GENMASK(15, 14)
90 
91 #define MT_RXWI_GAIN_RSSI_VAL		GENMASK(5, 0)
92 #define MT_RXWI_GAIN_RSSI_LNA_ID	GENMASK(7, 6)
93 #define MT_RXWI_ANT_AUX_LNA		BIT(7)
94 
95 #define MT_RXWI_EANT_ENC_ANT_ID		GENMASK(7, 0)
96 
97 enum mt76_phy_type {
98 	MT_PHY_TYPE_CCK,
99 	MT_PHY_TYPE_OFDM,
100 	MT_PHY_TYPE_HT,
101 	MT_PHY_TYPE_HT_GF,
102 };
103 
104 enum mt76_phy_bandwidth {
105 	MT_PHY_BW_20,
106 	MT_PHY_BW_40,
107 };
108 
109 struct mt76_txwi {
110 	__le16 flags;
111 	__le16 rate_ctl;
112 
113 	u8 ack_ctl;
114 	u8 wcid;
115 	__le16 len_ctl;
116 
117 	__le32 iv;
118 
119 	__le32 eiv;
120 
121 	u8 aid;
122 	u8 txstream;
123 	__le16 ctl;
124 } __packed __aligned(4);
125 
126 #define MT_TXWI_FLAGS_FRAG		BIT(0)
127 #define MT_TXWI_FLAGS_MMPS		BIT(1)
128 #define MT_TXWI_FLAGS_CFACK		BIT(2)
129 #define MT_TXWI_FLAGS_TS		BIT(3)
130 #define MT_TXWI_FLAGS_AMPDU		BIT(4)
131 #define MT_TXWI_FLAGS_MPDU_DENSITY	GENMASK(7, 5)
132 #define MT_TXWI_FLAGS_TXOP		GENMASK(9, 8)
133 #define MT_TXWI_FLAGS_CWMIN		GENMASK(12, 10)
134 #define MT_TXWI_FLAGS_NO_RATE_FALLBACK	BIT(13)
135 #define MT_TXWI_FLAGS_TX_RPT		BIT(14)
136 #define MT_TXWI_FLAGS_TX_RATE_LUT	BIT(15)
137 
138 #define MT_TXWI_RATE_MCS		GENMASK(6, 0)
139 #define MT_TXWI_RATE_BW			BIT(7)
140 #define MT_TXWI_RATE_SGI		BIT(8)
141 #define MT_TXWI_RATE_STBC		GENMASK(10, 9)
142 #define MT_TXWI_RATE_PHY_MODE		GENMASK(15, 14)
143 
144 #define MT_TXWI_ACK_CTL_REQ		BIT(0)
145 #define MT_TXWI_ACK_CTL_NSEQ		BIT(1)
146 #define MT_TXWI_ACK_CTL_BA_WINDOW	GENMASK(7, 2)
147 
148 #define MT_TXWI_LEN_BYTE_CNT		GENMASK(11, 0)
149 #define MT_TXWI_LEN_PKTID		GENMASK(15, 12)
150 
151 #define MT_TXWI_CTL_TX_POWER_ADJ	GENMASK(3, 0)
152 #define MT_TXWI_CTL_CHAN_CHECK_PKT	BIT(4)
153 #define MT_TXWI_CTL_PIFS_REV		BIT(6)
154 
155 u32 mt76_mac_process_rx(struct mt7601u_dev *dev, struct sk_buff *skb,
156 			u8 *data, void *rxi);
157 int mt76_mac_wcid_set_key(struct mt7601u_dev *dev, u8 idx,
158 			  struct ieee80211_key_conf *key);
159 void mt76_mac_wcid_set_rate(struct mt7601u_dev *dev, struct mt76_wcid *wcid,
160 			    const struct ieee80211_tx_rate *rate);
161 
162 int mt76_mac_shared_key_setup(struct mt7601u_dev *dev, u8 vif_idx, u8 key_idx,
163 			      struct ieee80211_key_conf *key);
164 u16 mt76_mac_tx_rate_val(struct mt7601u_dev *dev,
165 			 const struct ieee80211_tx_rate *rate, u8 *nss_val);
166 struct mt76_tx_status
167 mt7601u_mac_fetch_tx_status(struct mt7601u_dev *dev);
168 void mt76_send_tx_status(struct mt7601u_dev *dev, struct mt76_tx_status *stat);
169 void mt7601u_set_macaddr(struct mt7601u_dev *dev, const u8 *addr);
170 
171 #endif
172