[][MAC80211][mt76][Fix Rx token by physical address]
[Description]
Fix rx token by using physical address in RxDMAD.
The token id in RxDMAD may be incorrect due to WED HW bug.
[Release-log]
N/A
[[Info to Customer]]
none
Change-Id: Ib88f4905260c798824cba517e02d548bda7fe230
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6570099
Build: srv_hbgsm110
diff --git a/autobuild_mac80211_release/package/kernel/mt76/patches/3009-mt76-mt7915-find-rx-token-by-physical-address.patch b/autobuild_mac80211_release/package/kernel/mt76/patches/3009-mt76-mt7915-find-rx-token-by-physical-address.patch
new file mode 100644
index 0000000..8e1873d
--- /dev/null
+++ b/autobuild_mac80211_release/package/kernel/mt76/patches/3009-mt76-mt7915-find-rx-token-by-physical-address.patch
@@ -0,0 +1,50 @@
+From c72a8943ae9e7b97d9f67c066fe232eba920f517 Mon Sep 17 00:00:00 2001
+From: Peter Chiu <chui-hao.chiu@mediatek.com>
+Date: Tue, 27 Sep 2022 16:34:26 +0800
+Subject: [PATCH 3009/3010] mt76: mt7915: 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 | 19 ++++++++++++++++++-
+ 1 file changed, 18 insertions(+), 1 deletion(-)
+
+diff --git a/dma.c b/dma.c
+index fa56ccfb..c5513690 100644
+--- a/dma.c
++++ b/dma.c
+@@ -380,11 +380,28 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
+
+ type = FIELD_GET(MT_QFLAG_WED_TYPE, q->flags);
+ if (mtk_wed_device_active(wed) && type == MT76_WED_Q_RX) {
+- u32 token;
++ u32 token, id, find = 0;
+ struct mt76_txwi_cache *r;
+
+ token = FIELD_GET(MT_DMA_CTL_TOKEN, desc->buf1);
+
++ if (*more) {
++ spin_lock_bh(&dev->rx_token_lock);
++
++ 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;
++ break;
++ }
++ }
++
++ spin_unlock_bh(&dev->rx_token_lock);
++ if (!find)
++ return NULL;
++
++ }
+ r = mt76_rx_token_release(dev, token);
+ if (!r)
+ return NULL;
+--
+2.18.0
+