recipes-wifi/linux-mt76/files/patches/3008-mt76-mt7915-wed-find-rx-token-by-physical-address.patch

From 973e2baf6322ac8b8d51efb1985b34f14a0c6f7b Mon Sep 17 00:00:00 2001
From: Sujuan Chen <sujuan.chen@mediatek.com>
Date: Fri, 25 Nov 2022 14:32:35 +0800
Subject: [PATCH 3008/3013] mt76: mt7915: wed: find rx token by physical
 address

The token id in RxDMAD may be incorrect when it is not the last frame due to
WED HW bug. Lookup correct token id by physical address in sdp0.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
---
 dma.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/dma.c b/dma.c
index 35beec7..327ed3b 100644
--- a/dma.c
+++ b/dma.c
@@ -376,10 +376,29 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 
 	if ((q->flags & MT_QFLAG_WED) &&
 	    FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_RX) {
+		u32 id, find = 0;
 		u32 token = FIELD_GET(MT_DMA_CTL_TOKEN,
 				      le32_to_cpu(desc->buf1));
-		struct mt76_txwi_cache *t = mt76_rx_token_release(dev, token);
+		struct mt76_txwi_cache *t;
+
+		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)) {
+					find = 1;
+					desc->buf1 = FIELD_PREP(MT_DMA_CTL_TOKEN, id);
+					token = id;
+					break;
+				}
+			}
+
+			spin_unlock_bh(&dev->rx_token_lock);
+			if (!find)
+				return NULL;
+		}
 
+		t = mt76_rx_token_release(dev, token);
 		if (!t)
 			return NULL;
 
-- 
2.36.1