From 3841127f712794f45b9078215feaa8221ed18851 Mon Sep 17 00:00:00 2001
From: Sujuan Chen <sujuan.chen@mediatek.com>
Date: Wed, 14 Dec 2022 17:19:00 +0800
Subject: [PATCH 3012/3013] mt76: mt7915: wed: add rxwi for further in chip rro
 development

Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
---
 dma.c           | 98 +++++++++++++++++++++++++------------------------
 mac80211.c      |  2 +-
 mt76.h          | 24 +++++++-----
 mt7915/dma.c    |  2 -
 mt7915/mmio.c   | 21 ++++++-----
 mt7915/mt7915.h |  1 +
 tx.c            | 16 ++++----
 7 files changed, 86 insertions(+), 78 deletions(-)

diff --git a/dma.c b/dma.c
index 0914266..7ef272e 100644
--- a/dma.c
+++ b/dma.c
@@ -59,17 +59,17 @@ mt76_alloc_txwi(struct mt76_dev *dev)
 	return t;
 }
 
-static struct mt76_txwi_cache *
+static struct mt76_rxwi_cache *
 mt76_alloc_rxwi(struct mt76_dev *dev)
 {
-	struct mt76_txwi_cache *t;
+	struct mt76_rxwi_cache *r;
 
-	t = kzalloc(L1_CACHE_ALIGN(sizeof(*t)), GFP_ATOMIC);
-	if (!t)
+	r = kzalloc(L1_CACHE_ALIGN(sizeof(*r)), GFP_ATOMIC);
+	if (!r)
 		return NULL;
 
-	t->ptr = NULL;
-	return t;
+	r->ptr = NULL;
+	return r;
 }
 
 static struct mt76_txwi_cache *
@@ -88,20 +88,20 @@ __mt76_get_txwi(struct mt76_dev *dev)
 	return t;
 }
 
-static struct mt76_txwi_cache *
+static struct mt76_rxwi_cache *
 __mt76_get_rxwi(struct mt76_dev *dev)
 {
-	struct mt76_txwi_cache *t = NULL;
+	struct mt76_rxwi_cache *r = NULL;
 
-	spin_lock(&dev->wed_lock);
+	spin_lock(&dev->lock);
 	if (!list_empty(&dev->rxwi_cache)) {
-		t = list_first_entry(&dev->rxwi_cache, struct mt76_txwi_cache,
+		r = list_first_entry(&dev->rxwi_cache, struct mt76_rxwi_cache,
 				     list);
-		list_del(&t->list);
+		list_del(&r->list);
 	}
-	spin_unlock(&dev->wed_lock);
+	spin_unlock(&dev->lock);
 
-	return t;
+	return r;
 }
 
 static struct mt76_txwi_cache *
@@ -115,13 +115,13 @@ mt76_get_txwi(struct mt76_dev *dev)
 	return mt76_alloc_txwi(dev);
 }
 
-struct mt76_txwi_cache *
+struct mt76_rxwi_cache *
 mt76_get_rxwi(struct mt76_dev *dev)
 {
-	struct mt76_txwi_cache *t = __mt76_get_rxwi(dev);
+	struct mt76_rxwi_cache *r = __mt76_get_rxwi(dev);
 
-	if (t)
-		return t;
+	if (r)
+		return r;
 
 	return mt76_alloc_rxwi(dev);
 }
@@ -140,14 +140,14 @@ mt76_put_txwi(struct mt76_dev *dev, struct mt76_txwi_cache *t)
 EXPORT_SYMBOL_GPL(mt76_put_txwi);
 
 void
-mt76_put_rxwi(struct mt76_dev *dev, struct mt76_txwi_cache *t)
+mt76_put_rxwi(struct mt76_dev *dev, struct mt76_rxwi_cache *r)
 {
-	if (!t)
+	if (!r)
 		return;
 
-	spin_lock(&dev->wed_lock);
-	list_add(&t->list, &dev->rxwi_cache);
-	spin_unlock(&dev->wed_lock);
+	spin_lock(&dev->lock);
+	list_add(&r->list, &dev->rxwi_cache);
+	spin_unlock(&dev->lock);
 }
 EXPORT_SYMBOL_GPL(mt76_put_rxwi);
 
@@ -168,13 +168,13 @@ mt76_free_pending_txwi(struct mt76_dev *dev)
 void
 mt76_free_pending_rxwi(struct mt76_dev *dev)
 {
-	struct mt76_txwi_cache *t;
+	struct mt76_rxwi_cache *r;
 
 	local_bh_disable();
-	while ((t = __mt76_get_rxwi(dev)) != NULL) {
-		if (t->ptr)
-			skb_free_frag(t->ptr);
-		kfree(t);
+	while ((r = __mt76_get_rxwi(dev)) != NULL) {
+		if (r->ptr)
+			skb_free_frag(r->ptr);
+		kfree(r);
 	}
 	local_bh_enable();
 }
@@ -209,7 +209,7 @@ mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q)
 static int
 mt76_dma_add_buf(struct mt76_dev *dev, struct mt76_queue *q,
 		 struct mt76_queue_buf *buf, int nbufs, u32 info,
-		 struct sk_buff *skb, void *txwi)
+		 struct sk_buff *skb, void *txwi, void *rxwi)
 {
 	struct mt76_queue_entry *entry;
 	struct mt76_desc *desc;
@@ -227,13 +227,13 @@ mt76_dma_add_buf(struct mt76_dev *dev, struct mt76_queue *q,
 
 		if ((q->flags & MT_QFLAG_WED) &&
 		    FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_RX) {
-			struct mt76_txwi_cache *t = txwi;
+			struct mt76_rxwi_cache *r = rxwi;
 			int rx_token;
 
-			if (!t)
+			if (!r)
 				return -ENOMEM;
 
-			rx_token = mt76_rx_token_consume(dev, (void *)skb, t,
+			rx_token = mt76_rx_token_consume(dev, (void *)skb, r,
 							 buf[0].addr);
 			if (rx_token < 0)
 				return -ENOMEM;
@@ -280,6 +280,7 @@ mt76_dma_add_buf(struct mt76_dev *dev, struct mt76_queue *q,
 	}
 
 	q->entry[idx].txwi = txwi;
+	q->entry[idx].rxwi = rxwi;
 	q->entry[idx].skb = skb;
 	q->entry[idx].wcid = 0xffff;
 
@@ -379,13 +380,13 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 		u32 id, find = 0;
 		u32 token = FIELD_GET(MT_DMA_CTL_TOKEN,
 				      le32_to_cpu(desc->buf1));
-		struct mt76_txwi_cache *t;
+		struct mt76_rxwi_cache *r;
 
 		if (*more) {
 			spin_lock_bh(&dev->rx_token_lock);
 
-			idr_for_each_entry(&dev->rx_token, t, id) {
-				if (t->dma_addr == le32_to_cpu(desc->buf0)) {
+			idr_for_each_entry(&dev->rx_token, r, id) {
+				if (r->dma_addr == le32_to_cpu(desc->buf0)) {
 					find = 1;
 					desc->buf1 = FIELD_PREP(MT_DMA_CTL_TOKEN, id);
 					token = id;
@@ -398,11 +399,11 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 				return NULL;
 		}
 
-		t = mt76_rx_token_release(dev, token);
-		if (!t)
+		r = mt76_rx_token_release(dev, token);
+		if (!r)
 			return NULL;
 
-		dma_unmap_single(dev->dma_dev, t->dma_addr,
+		dma_unmap_single(dev->dma_dev, r->dma_addr,
 				 SKB_WITH_OVERHEAD(q->buf_size),
 				 DMA_FROM_DEVICE);
 
@@ -410,10 +411,10 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 		if (!buf)
 			return NULL;
 
-		memcpy(buf, t->ptr, SKB_WITH_OVERHEAD(q->buf_size));
-		t->dma_addr = 0;
+		memcpy(buf, r->ptr, SKB_WITH_OVERHEAD(q->buf_size));
+		r->dma_addr = 0;
 
-		mt76_put_rxwi(dev, t);
+		mt76_put_rxwi(dev, r);
 
 		if (drop) {
 			u32 ctrl = le32_to_cpu(READ_ONCE(desc->ctrl));
@@ -481,7 +482,7 @@ mt76_dma_tx_queue_skb_raw(struct mt76_dev *dev, struct mt76_queue *q,
 	buf.len = skb->len;
 
 	spin_lock_bh(&q->lock);
-	mt76_dma_add_buf(dev, q, &buf, 1, tx_info, skb, NULL);
+	mt76_dma_add_buf(dev, q, &buf, 1, tx_info, skb, NULL, NULL);
 	mt76_dma_kick_queue(dev, q);
 	spin_unlock_bh(&q->lock);
 
@@ -558,7 +559,7 @@ mt76_dma_tx_queue_skb(struct mt76_dev *dev, struct mt76_queue *q,
 		goto unmap;
 
 	return mt76_dma_add_buf(dev, q, tx_info.buf, tx_info.nbuf,
-				tx_info.info, tx_info.skb, t);
+				tx_info.info, tx_info.skb, t, NULL);
 
 unmap:
 	for (n--; n > 0; n--)
@@ -598,20 +599,21 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q)
 	spin_lock_bh(&q->lock);
 
 	while (q->queued < q->ndesc - 1) {
-		struct mt76_txwi_cache *t = NULL;
+		struct mt76_rxwi_cache *r = NULL;
 		struct mt76_queue_buf qbuf;
 		bool skip_alloc = false;
 		void *buf = NULL;
 
 		if ((q->flags & MT_QFLAG_WED) &&
 		    FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_RX) {
-			t = mt76_get_rxwi(dev);
-			if (!t)
+			r = mt76_get_rxwi(dev);
+			if (!r)
 				break;
 
-			if (t->ptr) {
+			/* reuse skb buf for wed rx copy*/
+			if (r->ptr) {
 				skip_alloc = true;
-				buf = t->ptr;
+				buf = r->ptr;
 			}
 		}
 
@@ -630,7 +632,7 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q)
 		qbuf.addr = addr + offset;
 		qbuf.len = len - offset;
 		qbuf.skip_unmap = false;
-		if (mt76_dma_add_buf(dev, q, &qbuf, 1, 0, buf, t) < 0) {
+		if (mt76_dma_add_buf(dev, q, &qbuf, 1, 0, buf, NULL, r) < 0) {
 			dma_unmap_single(dev->dma_dev, addr, len,
 					 DMA_FROM_DEVICE);
 			skb_free_frag(buf);
diff --git a/mac80211.c b/mac80211.c
index de9ef23..818f4f0 100644
--- a/mac80211.c
+++ b/mac80211.c
@@ -597,7 +597,6 @@ mt76_alloc_device(struct device *pdev, unsigned int size,
 	spin_lock_init(&dev->lock);
 	spin_lock_init(&dev->cc_lock);
 	spin_lock_init(&dev->status_lock);
-	spin_lock_init(&dev->wed_lock);
 	mutex_init(&dev->mutex);
 	init_waitqueue_head(&dev->tx_wait);
 
@@ -628,6 +627,7 @@ mt76_alloc_device(struct device *pdev, unsigned int size,
 	INIT_LIST_HEAD(&dev->txwi_cache);
 	INIT_LIST_HEAD(&dev->rxwi_cache);
 	dev->token_size = dev->drv->token_size;
+	dev->rx_token_size = dev->drv->rx_token_size;
 
 	for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++)
 		skb_queue_head_init(&dev->rx_skb[i]);
diff --git a/mt76.h b/mt76.h
index b10a16f..631c4cc 100644
--- a/mt76.h
+++ b/mt76.h
@@ -166,6 +166,7 @@ struct mt76_queue_entry {
 	};
 	union {
 		struct mt76_txwi_cache *txwi;
+		struct mt76_rxwi_cache *rxwi;
 		struct urb *urb;
 		int buf_sz;
 	};
@@ -354,10 +355,15 @@ struct mt76_txwi_cache {
 	struct list_head list;
 	dma_addr_t dma_addr;
 
-	union {
-		struct sk_buff *skb;
-		void *ptr;
-	};
+	struct sk_buff *skb;
+};
+
+struct mt76_rxwi_cache {
+	struct list_head list;
+	dma_addr_t dma_addr;
+
+	void *ptr;
+	u32 token;
 };
 
 struct mt76_rx_tid {
@@ -441,6 +447,7 @@ struct mt76_driver_ops {
 	u16 txwi_size;
 	u16 token_size;
 	u8 mcs_rates;
+	u16 rx_token_size;
 
 	void (*update_survey)(struct mt76_phy *phy);
 
@@ -809,7 +816,6 @@ struct mt76_dev {
 
 	struct ieee80211_hw *hw;
 
-	spinlock_t wed_lock;
 	spinlock_t lock;
 	spinlock_t cc_lock;
 
@@ -1400,8 +1406,8 @@ mt76_tx_status_get_hw(struct mt76_dev *dev, struct sk_buff *skb)
 }
 
 void mt76_put_txwi(struct mt76_dev *dev, struct mt76_txwi_cache *t);
-void mt76_put_rxwi(struct mt76_dev *dev, struct mt76_txwi_cache *t);
-struct mt76_txwi_cache *mt76_get_rxwi(struct mt76_dev *dev);
+void mt76_put_rxwi(struct mt76_dev *dev, struct mt76_rxwi_cache *r);
+struct mt76_rxwi_cache *mt76_get_rxwi(struct mt76_dev *dev);
 void mt76_free_pending_rxwi(struct mt76_dev *dev);
 void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
 		      struct napi_struct *napi);
@@ -1547,9 +1553,9 @@ struct mt76_txwi_cache *
 mt76_token_release(struct mt76_dev *dev, int token, bool *wake);
 int mt76_token_consume(struct mt76_dev *dev, struct mt76_txwi_cache **ptxwi);
 void __mt76_set_tx_blocked(struct mt76_dev *dev, bool blocked);
-struct mt76_txwi_cache *mt76_rx_token_release(struct mt76_dev *dev, int token);
+struct mt76_rxwi_cache *mt76_rx_token_release(struct mt76_dev *dev, int token);
 int mt76_rx_token_consume(struct mt76_dev *dev, void *ptr,
-			  struct mt76_txwi_cache *r, dma_addr_t phys);
+			  struct mt76_rxwi_cache *r, dma_addr_t phys);
 
 static inline void mt76_set_tx_blocked(struct mt76_dev *dev, bool blocked)
 {
diff --git a/mt7915/dma.c b/mt7915/dma.c
index 3626008..9cbd362 100644
--- a/mt7915/dma.c
+++ b/mt7915/dma.c
@@ -492,7 +492,6 @@ int mt7915_dma_init(struct mt7915_dev *dev, struct mt7915_phy *phy2)
 		    mtk_wed_get_rx_capa(&mdev->mmio.wed)) {
 			dev->mt76.q_rx[MT_RXQ_MAIN].flags =
 				MT_WED_Q_RX(MT7915_RXQ_BAND0);
-			dev->mt76.rx_token_size += MT7915_RX_RING_SIZE;
 		}
 
 		ret = mt76_queue_alloc(dev, &dev->mt76.q_rx[MT_RXQ_MAIN],
@@ -529,7 +528,6 @@ int mt7915_dma_init(struct mt7915_dev *dev, struct mt7915_phy *phy2)
 		    mtk_wed_get_rx_capa(&mdev->mmio.wed)) {
 			dev->mt76.q_rx[MT_RXQ_BAND1].flags =
 				MT_WED_Q_RX(MT7915_RXQ_BAND1);
-			dev->mt76.rx_token_size += MT7915_RX_RING_SIZE;
 		}
 
 		/* rx data queue for band1 */
diff --git a/mt7915/mmio.c b/mt7915/mmio.c
index 4bc8e8c..09b3973 100644
--- a/mt7915/mmio.c
+++ b/mt7915/mmio.c
@@ -605,18 +605,18 @@ static void mt7915_mmio_wed_release_rx_buf(struct mtk_wed_device *wed)
 
 	dev = container_of(wed, struct mt7915_dev, mt76.mmio.wed);
 	for (i = 0; i < dev->mt76.rx_token_size; i++) {
-		struct mt76_txwi_cache *t;
+		struct mt76_rxwi_cache *r;
 
-		t = mt76_rx_token_release(&dev->mt76, i);
-		if (!t || !t->ptr)
+		r = mt76_rx_token_release(&dev->mt76, i);
+		if (!r || !r->ptr)
 			continue;
 
-		dma_unmap_single(dev->mt76.dma_dev, t->dma_addr,
+		dma_unmap_single(dev->mt76.dma_dev, r->dma_addr,
 				 wed->wlan.rx_size, DMA_FROM_DEVICE);
-		skb_free_frag(t->ptr);
-		t->ptr = NULL;
+		skb_free_frag(r->ptr);
+		r->ptr = NULL;
 
-		mt76_put_rxwi(&dev->mt76, t);
+		mt76_put_rxwi(&dev->mt76, r);
 	}
 
 	mt76_free_pending_rxwi(&dev->mt76);
@@ -641,7 +641,7 @@ static u32 mt7915_mmio_wed_init_rx_buf(struct mtk_wed_device *wed, int size)
 				sizeof(struct skb_shared_info));
 
 	for (i = 0; i < size; i++) {
-		struct mt76_txwi_cache *t = mt76_get_rxwi(&dev->mt76);
+		struct mt76_rxwi_cache *r = mt76_get_rxwi(&dev->mt76);
 		dma_addr_t phy_addr;
 		int token;
 		void *ptr;
@@ -660,7 +660,7 @@ static u32 mt7915_mmio_wed_init_rx_buf(struct mtk_wed_device *wed, int size)
 		}
 
 		desc->buf0 = cpu_to_le32(phy_addr);
-		token = mt76_rx_token_consume(&dev->mt76, ptr, t, phy_addr);
+		token = mt76_rx_token_consume(&dev->mt76, ptr, r, phy_addr);
 		if (token < 0) {
 			dma_unmap_single(dev->mt76.dma_dev, phy_addr,
 					 wed->wlan.rx_size, DMA_TO_DEVICE);
@@ -788,7 +788,7 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
 	wed->wlan.update_wo_rx_stats = mt7915_mmio_wed_update_rx_stats;
 	wed->wlan.ser_trigger = mt7915_wed_trigger_ser;
 
-	dev->mt76.rx_token_size = wed->wlan.rx_npkt;
+	dev->mt76.rx_token_size += wed->wlan.rx_npkt;
 
 	if (mtk_wed_device_attach(wed))
 		return 0;
@@ -994,6 +994,7 @@ struct mt7915_dev *mt7915_mmio_probe(struct device *pdev,
 				SURVEY_INFO_TIME_RX |
 				SURVEY_INFO_TIME_BSS_RX,
 		.token_size = MT7915_TOKEN_SIZE,
+		.rx_token_size = MT7915_RX_TOKEN_SIZE,
 		.tx_prepare_skb = mt7915_tx_prepare_skb,
 		.tx_complete_skb = mt76_connac_tx_complete_skb,
 		.rx_skb = mt7915_queue_rx_skb,
diff --git a/mt7915/mt7915.h b/mt7915/mt7915.h
index 30e878f..58ed90b 100644
--- a/mt7915/mt7915.h
+++ b/mt7915/mt7915.h
@@ -57,6 +57,7 @@
 #define MT7915_EEPROM_BLOCK_SIZE	16
 #define MT7915_TOKEN_SIZE		8192
 #define MT7915_HW_TOKEN_SIZE		4096
+#define MT7915_RX_TOKEN_SIZE		4096
 
 #define MT7915_CFEND_RATE_DEFAULT	0x49	/* OFDM 24M */
 #define MT7915_CFEND_RATE_11B		0x03	/* 11B LP, 11M */
diff --git a/tx.c b/tx.c
index 6d55566..a72b777 100644
--- a/tx.c
+++ b/tx.c
@@ -756,16 +756,16 @@ int mt76_token_consume(struct mt76_dev *dev, struct mt76_txwi_cache **ptxwi)
 EXPORT_SYMBOL_GPL(mt76_token_consume);
 
 int mt76_rx_token_consume(struct mt76_dev *dev, void *ptr,
-			  struct mt76_txwi_cache *t, dma_addr_t phys)
+			  struct mt76_rxwi_cache *r, dma_addr_t phys)
 {
 	int token;
 
 	spin_lock_bh(&dev->rx_token_lock);
-	token = idr_alloc(&dev->rx_token, t, 0, dev->rx_token_size,
+	token = idr_alloc(&dev->rx_token, r, 0, dev->rx_token_size,
 			  GFP_ATOMIC);
 	if (token >= 0) {
-		t->ptr = ptr;
-		t->dma_addr = phys;
+		r->ptr = ptr;
+		r->dma_addr = phys;
 	}
 	spin_unlock_bh(&dev->rx_token_lock);
 
@@ -802,15 +802,15 @@ mt76_token_release(struct mt76_dev *dev, int token, bool *wake)
 }
 EXPORT_SYMBOL_GPL(mt76_token_release);
 
-struct mt76_txwi_cache *
+struct mt76_rxwi_cache *
 mt76_rx_token_release(struct mt76_dev *dev, int token)
 {
-	struct mt76_txwi_cache *t;
+	struct mt76_rxwi_cache *r;
 
 	spin_lock_bh(&dev->rx_token_lock);
-	t = idr_remove(&dev->rx_token, token);
+	r = idr_remove(&dev->rx_token, token);
 	spin_unlock_bh(&dev->rx_token_lock);
 
-	return t;
+	return r;
 }
 EXPORT_SYMBOL_GPL(mt76_rx_token_release);
-- 
2.36.1