wifi: mt76: Convert mt76_wed_rro_ind to LE

Do not use bitmask in mt76_wed_rro_ind DMA descriptor in order to not
break endianness.
This patch is based on the following series:
https://lore.kernel.org/linux-wireless/20250909-mt7996-rro-rework-v5-0-7d66f6eb7795@kernel.org/T/#m8b488004d69036cd3672b9eeca8005a937ec0313

Fixes: 950d0abb5cd94 ("wifi: mt76: mt7996: add wed rx support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/301d5f2982ddb729c876fb65f9ac2443ce3f5ff1.1757414621.git.lorenzo@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>

3 files changed, 29 insertions, 18 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index 5dc093b21838..1fa7de1d2c45 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -194,6 +194,8 @@ mt76_dma_queue_magic_cnt_init(struct mt76_dev *dev, struct mt76_queue *q)
 	q->magic_cnt = 0;
 	if (mt76_queue_is_wed_rro_ind(q)) {
 		struct mt76_wed_rro_desc *rro_desc;
+		u32 data1 = FIELD_PREP(RRO_IND_DATA1_MAGIC_CNT_MASK,
+				       MT_DMA_WED_IND_CMD_CNT - 1);
 		int i;
 
 		rro_desc = (struct mt76_wed_rro_desc *)q->desc;
@@ -201,7 +203,7 @@ mt76_dma_queue_magic_cnt_init(struct mt76_dev *dev, struct mt76_queue *q)
 			struct mt76_wed_rro_ind *cmd;
 
 			cmd = (struct mt76_wed_rro_ind *)&rro_desc[i];
-			cmd->magic_cnt = MT_DMA_WED_IND_CMD_CNT - 1;
+			cmd->data1 = cpu_to_le32(data1);
 		}
 	} else if (mt76_queue_is_wed_rro_rxdmad_c(q)) {
 		struct mt76_rro_rxdmad_c *dmad = (void *)q->desc;
@@ -582,12 +584,15 @@ mt76_dma_dequeue(struct mt76_dev *dev, struct mt76_queue *q, bool flush,
 
 	if (mt76_queue_is_wed_rro_ind(q)) {
 		struct mt76_wed_rro_ind *cmd;
+		u8 magic_cnt;
 
 		if (flush)
 			goto done;
 
 		cmd = q->entry[idx].buf;
-		if (cmd->magic_cnt != q->magic_cnt)
+		magic_cnt = FIELD_GET(RRO_IND_DATA1_MAGIC_CNT_MASK,
+				      le32_to_cpu(cmd->data1));
+		if (magic_cnt != q->magic_cnt)
 			return NULL;
 
 		if (q->tail == q->ndesc - 1)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index b102b6d798b8..edda01ff1117 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -415,15 +415,16 @@ struct mt76_txq {
 	bool aggr;
 };
 
+/* data0 */
+#define RRO_IND_DATA0_IND_REASON_MASK	GENMASK(31, 28)
+#define RRO_IND_DATA0_START_SEQ_MASK	GENMASK(27, 16)
+#define RRO_IND_DATA0_SEQ_ID_MASK	GENMASK(11, 0)
+/* data1 */
+#define RRO_IND_DATA1_MAGIC_CNT_MASK	GENMASK(31, 29)
+#define RRO_IND_DATA1_IND_COUNT_MASK	GENMASK(12, 0)
 struct mt76_wed_rro_ind {
-	u32 se_id	: 12;
-	u32 rsv		: 4;
-	u32 start_sn	: 12;
-	u32 ind_reason	: 4;
-	u32 ind_cnt	: 13;
-	u32 win_sz	: 3;
-	u32 rsv2	: 13;
-	u32 magic_cnt	: 3;
+	__le32 data0;
+	__le32 data1;
 };
 
 struct mt76_txwi_cache {
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index f4a897e7935e..2183193b26a6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -1830,11 +1830,17 @@ void mt7996_rro_rx_process(struct mt76_dev *mdev, void *data)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
 	struct mt76_wed_rro_ind *cmd = (struct mt76_wed_rro_ind *)data;
+	u32 cmd_data0 = le32_to_cpu(cmd->data0);
+	u32 cmd_data1 = le32_to_cpu(cmd->data1);
+	u8 ind_reason = FIELD_GET(RRO_IND_DATA0_IND_REASON_MASK, cmd_data0);
+	u16 start_seq = FIELD_GET(RRO_IND_DATA0_START_SEQ_MASK, cmd_data0);
+	u16 seq_id = FIELD_GET(RRO_IND_DATA0_SEQ_ID_MASK, cmd_data0);
+	u16 ind_count = FIELD_GET(RRO_IND_DATA1_IND_COUNT_MASK, cmd_data1);
 	struct mt7996_msdu_page_info *pinfo = NULL;
 	struct mt7996_msdu_page *p = NULL;
 	int i, seq_num = 0;
 
-	for (i = 0; i < cmd->ind_cnt; i++) {
+	for (i = 0; i < ind_count; i++) {
 		struct mt7996_wed_rro_addr *e;
 		struct mt76_rx_status *status;
 		struct mt7996_rro_hif *rxd;
@@ -1849,8 +1855,8 @@ void mt7996_rro_rx_process(struct mt76_dev *mdev, void *data)
 		void *buf;
 		bool ls;
 
-		seq_num = FIELD_GET(MT996_RRO_SN_MASK, cmd->start_sn + i);
-		e = mt7996_rro_addr_elem_get(dev, cmd->se_id, seq_num);
+		seq_num = FIELD_GET(MT996_RRO_SN_MASK, start_seq + i);
+		e = mt7996_rro_addr_elem_get(dev, seq_id, seq_num);
 		data = le32_to_cpu(e->data);
 		signature = FIELD_GET(WED_RRO_ADDR_SIGNATURE_MASK, data);
 		if (signature != (seq_num / MT7996_RRO_WINDOW_MAX_LEN)) {
@@ -1938,7 +1944,7 @@ void mt7996_rro_rx_process(struct mt76_dev *mdev, void *data)
 			skb_mark_for_recycle(skb);
 			__skb_put(skb, len);
 
-			if (cmd->ind_reason == 1 || cmd->ind_reason == 2) {
+			if (ind_reason == 1 || ind_reason == 2) {
 				dev_kfree_skb(skb);
 				goto next_page;
 			}
@@ -1949,7 +1955,7 @@ void mt7996_rro_rx_process(struct mt76_dev *mdev, void *data)
 			}
 
 			status = (struct mt76_rx_status *)skb->cb;
-			if (cmd->se_id != MT7996_RRO_MAX_SESSION)
+			if (seq_id != MT7996_RRO_MAX_SESSION)
 				status->aggr = true;
 
 			mt7996_queue_rx_skb(mdev, qid, skb, &info);
@@ -1973,7 +1979,7 @@ update_ack_seq_num:
 		if ((i + 1) % 4 == 0)
 			mt76_wr(dev, MT_RRO_ACK_SN_CTRL,
 				FIELD_PREP(MT_RRO_ACK_SN_CTRL_SESSION_MASK,
-					   cmd->se_id) |
+					   seq_id) |
 				FIELD_PREP(MT_RRO_ACK_SN_CTRL_SN_MASK,
 					   seq_num));
 		if (p) {
@@ -1985,8 +1991,7 @@ update_ack_seq_num:
 	/* Update ack_seq_num for remaining addr_elem */
 	if (i % 4)
 		mt76_wr(dev, MT_RRO_ACK_SN_CTRL,
-			FIELD_PREP(MT_RRO_ACK_SN_CTRL_SESSION_MASK,
-				   cmd->se_id) |
+			FIELD_PREP(MT_RRO_ACK_SN_CTRL_SESSION_MASK, seq_id) |
 			FIELD_PREP(MT_RRO_ACK_SN_CTRL_SN_MASK, seq_num));
 }