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Sat, 22 Mar 2025 16:32:41 +0000 Received: from TYCPR01MB8437.jpnprd01.prod.outlook.com ([fe80::83e7:751f:f3af:768f]) by TYCPR01MB8437.jpnprd01.prod.outlook.com ([fe80::83e7:751f:f3af:768f%3]) with mapi id 15.20.8534.038; Sat, 22 Mar 2025 16:32:41 +0000 From: Shengyu Qu To: nbd@nbd.name, pkshih@realtek.com, lorenzo@kernel.org, ryder.lee@mediatek.com, shayne.chen@mediatek.com, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Shengyu Qu , Peter Chiu Subject: [PATCH v3] mt76: mt7915: wed: find rx token by physical address Date: Sun, 23 Mar 2025 00:32:35 +0800 Message-ID: X-Mailer: git-send-email 2.49.0 X-ClientProxiedBy: PS2PR02CA0006.apcprd02.prod.outlook.com (2603:1096:300:41::18) To TYCPR01MB8437.jpnprd01.prod.outlook.com (2603:1096:400:156::5) X-Microsoft-Original-Message-ID: <20250322163235.8655-1-wiagn233@outlook.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: TYCPR01MB8437:EE_|TYWPR01MB7186:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c1920e3-2dc2-4ab6-95f6-08dd695f2a30 X-Microsoft-Antispam: BCL:0;ARA:14566002|5062599005|461199028|7092599003|5072599009|19110799003|15080799006|8060799006|3412199025|440099028|13041999003|4302099013|10035399004|19111999003|14041999003|41001999003|1602099012|1710799026; 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Lookup correct token id by physical address in sdp0. Downstream patch link: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/737340322ab22b138fd200e020d61ffdbe3e36a9/autobuild/autobuild_5.4_mac80211_release/mt7988_wifi7_mac80211_mlo/package/kernel/mt76/patches/0062-mtk-wifi-mt76-mt7915-wed-find-rx-token-by-physical-a.patch Signed-off-by: Peter Chiu Signed-off-by: Shengyu Qu --- Changes since v1: - Reordered code sequence to reversed Xmas tree order - Renamed some variables Changes since v2: - Assigning true to variable "found" instead of 1 --- drivers/net/wireless/mediatek/mt76/dma.c | 26 +++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 844af16ee5513..d5649c52c669a 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -445,8 +445,32 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx, if (mt76_queue_is_wed_rx(q)) { u32 token = FIELD_GET(MT_DMA_CTL_TOKEN, buf1); - struct mt76_txwi_cache *t = mt76_rx_token_release(dev, token); + struct mt76_txwi_cache *t; + bool found = false; + u32 id; + + 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)) { + token = id; + found = true; + + /* Write correct id back to DMA*/ + u32p_replace_bits(&buf1, id, + MT_DMA_CTL_TOKEN); + WRITE_ONCE(desc->buf1, cpu_to_le32(buf1)); + break; + } + } + + spin_unlock_bh(&dev->rx_token_lock); + if (!found) + return NULL; + } + t = mt76_rx_token_release(dev, token); if (!t) return NULL;