From: sean.wang@kernel.org
To: nbd@nbd.name, lorenzo.bianconi@redhat.com
Cc: linux-wireless@vger.kernel.org,
linux-mediatek@lists.infradead.org,
Sean Wang <sean.wang@mediatek.com>,
Xiong Huang <xiong.huang@mediatek.com>
Subject: [PATCH 09/11] wifi: mt76: mt792x: add MT7902 WFDMA prefetch configuration
Date: Wed, 18 Feb 2026 18:40:05 -0600 [thread overview]
Message-ID: <20260219004007.19733-9-sean.wang@kernel.org> (raw)
In-Reply-To: <20260219004007.19733-1-sean.wang@kernel.org>
From: Sean Wang <sean.wang@mediatek.com>
Configure the RX/TX ring prefetch setting for MT7902 PCIe device.
This is a prerequisite patch before enabling MT7902 PCIe support.
Co-developed-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Xiong Huang <xiong.huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/net/wireless/mediatek/mt76/mt792x_dma.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
index 34f07bd3097d..002aece857b2 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_dma.c
@@ -103,6 +103,22 @@ static void mt792x_dma_prefetch(struct mt792x_dev *dev)
mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x0400, 0x10));
mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x0500, 0x4));
mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0540, 0x4));
+ } else if (is_mt7902(&dev->mt76)) {
+ /* rx ring */
+ mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0000, 0x4));
+ mt76_wr(dev, MT_WFDMA0_RX_RING1_EXT_CTRL, PREFETCH(0x0040, 0x4));
+ mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x0080, 0x4));
+ mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x00c0, 0x4));
+ /* tx ring */
+ mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x0100, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x0140, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x0180, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x01c0, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x0200, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x0240, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x0280, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING15_EXT_CTRL, PREFETCH(0x02c0, 0x4));
+ mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x0300, 0x4));
} else {
/* rx ring */
mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
--
2.43.0
next prev parent reply other threads:[~2026-02-19 0:40 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-19 0:39 [PATCH 01/11] wifi: mt76: connac: use is_connac2() to replace is_mt7921() checks sean.wang
2026-02-19 0:39 ` [PATCH 02/11] wifi: mt76: mt7921: use mt76_for_each_q_rx() in reset path sean.wang
2026-02-19 0:39 ` [PATCH 03/11] wifi: mt76: mt7921: handle MT7902 irq_map quirk with mutable copy sean.wang
2026-02-20 10:09 ` Philip Müller
2026-02-20 18:39 ` Sean Wang
2026-02-19 0:40 ` [PATCH 04/11] wifi: mt76: mt7921: add MT7902e DMA layout support sean.wang
2026-02-19 0:40 ` [PATCH 05/11] wifi: mt76: connac: mark MT7902 as hw txp devices sean.wang
2026-02-19 0:40 ` [PATCH 06/11] wifi: mt76: mt792x: add PSE handling barrier for the large MCU cmd sean.wang
2026-02-19 0:40 ` [PATCH 07/11] wifi: mt76: mt792x: ensure MCU ready before ROM patch download sean.wang
2026-02-19 0:40 ` [PATCH 08/11] wifi: mt76: mt7921: add MT7902 MCU support sean.wang
2026-02-19 0:40 ` sean.wang [this message]
2026-02-19 0:40 ` [PATCH 10/11] wifi: mt76: mt7921: add MT7902 PCIe device support sean.wang
2026-02-19 0:40 ` [PATCH 11/11] wifi: mt76: mt7921: add MT7902 SDIO " sean.wang
2026-02-20 20:41 ` [PATCH 01/11] wifi: mt76: connac: use is_connac2() to replace is_mt7921() checks Philip Müller
2026-02-21 20:19 ` Sean Wang
2026-03-22 8:04 ` Philip Müller
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