mt76: mt7915: enable Rx HE rate reporting

Enable HE rate reporting in Rx path
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -43,6 +43,8 @@ static void mt7915_mac_init(struct mt7915_dev *dev)
 
 	mt76_rmw_field(dev, MT_DMA_DCR0, MT_DMA_DCR0_MAX_RX_LEN, 1536);
 	mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
+	/* enable rx rate report */
+	mt76_set(dev, MT_DMA_DCR0, MT_DMA_DCR0_RXD_G5_EN);
 	/* disable hardware de-agg */
 	mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
 

drivers/net/wireless/mediatek/mt76/mt7915/mac.c

@@ -347,6 +347,22 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
 				if (i > 9)
 					return -EINVAL;
 				break;
+			case MT_PHY_TYPE_HE_MU:
+				/* fall through */
+			case MT_PHY_TYPE_HE_SU:
+			case MT_PHY_TYPE_HE_EXT_SU:
+			case MT_PHY_TYPE_HE_TB:
+				status->nss =
+					FIELD_GET(MT_PRXV_NSTS, rxv.v[0]) + 1;
+				status->encoding = RX_ENC_HE;
+				i &= GENMASK(3, 0);
+
+				if (gi <= NL80211_RATE_INFO_HE_GI_3_2)
+					status->he_gi = gi;
+
+				if (idx & MT_PRXV_TX_DCM)
+					status->he_dcm = true;
+				break;
 			default:
 				return -EINVAL;
 			}
@@ -356,7 +372,14 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
 			case IEEE80211_STA_RX_BW_20:
 				break;
 			case IEEE80211_STA_RX_BW_40:
-				status->bw = RATE_INFO_BW_40;
+				if (rxv.phy & MT_PHY_TYPE_HE_EXT_SU &&
+				    (idx & MT_PRXV_TX_ER_SU_106T)) {
+					status->bw = RATE_INFO_BW_HE_RU;
+					status->he_ru =
+						NL80211_RATE_INFO_HE_RU_ALLOC_106;
+				} else {
+					status->bw = RATE_INFO_BW_40;
+				}
 				break;
 			case IEEE80211_STA_RX_BW_80:
 				status->bw = RATE_INFO_BW_80;
@@ -369,7 +392,7 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
 			}
 
 			status->enc_flags |= RX_ENC_FLAG_STBC_MASK * stbc;
-			if (gi)
+			if (rxv.phy < MT_PHY_TYPE_HE_SU && gi)
 				status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
 		}
 	}

drivers/net/wireless/mediatek/mt76/mt7915/mac.h

@@ -97,6 +97,8 @@ enum rx_pkt_type {
 
 /* P-RXV */
 #define MT_PRXV_TX_RATE			GENMASK(6, 0)
+#define MT_PRXV_TX_DCM			BIT(4)
+#define MT_PRXV_TX_ER_SU_106T		BIT(5)
 #define MT_PRXV_NSTS			GENMASK(9, 7)
 #define MT_PRXV_HT_AD_CODE		BIT(11)
 #define MT_PRXV_RCPI3			GENMASK(31, 24)

drivers/net/wireless/mediatek/mt76/mt7915/regs.h

@@ -73,6 +73,7 @@
 
 #define MT_DMA_DCR0			MT_WF_DMA(0x000)
 #define MT_DMA_DCR0_MAX_RX_LEN		GENMASK(15, 3)
+#define MT_DMA_DCR0_RXD_G5_EN		BIT(23)
 
 /* MIB: band 0(0x24800), band 1(0xa4800) */
 #define MT_WF_MIB_BASE(_band)		((_band) ? 0xa4800 : 0x24800)