Re: [PATCH net-next v2] net: mediatek: wed: Introduce MT7992 WED support to MT7988 SoC

Lorenzo Bianconi
2025-08-11T19:16:09Z

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> Introduce the second WDMA RX ring in WED driver for MT7988 SoC since the
> Mediatek MT7992 WiFi chipset supports two separated WDMA rings.
> Add missing MT7988 configurations to properly support WED for MT7992 in
> MT76 driver.

I sent this email twice wrongly. Please ignore this one.

Regards,
Lorenzo

>
> Co-developed-by: Rex Lu <rex.lu@mediatek.com>
> Signed-off-by: Rex Lu <rex.lu@mediatek.com>
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
> ---
> Changes in v2:
> - Fix commit log
> - Rebase on top of net-next main branch
> - Link to v1: https://lore.kernel.org/r/20250727-mt7992-wed-support-v1-1-aad7da4dc877@kernel.org
> ---
> drivers/net/ethernet/mediatek/mtk_wed.c | 33 +++++++++++++++++++-----
> drivers/net/ethernet/mediatek/mtk_wed.h | 2 +-
> drivers/net/wireless/mediatek/mt76/mt7915/mmio.c | 6 ++---
> drivers/net/wireless/mediatek/mt76/mt7996/mmio.c | 12 ++++-----
> include/linux/soc/mediatek/mtk_wed.h | 2 +-
> 5 files changed, 38 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/net/ethernet/mediatek/mtk_wed.c b/drivers/net/ethernet/mediatek/mtk_wed.c
> index 0a80d8f8cff7f415a60b0cd68c0c9c07e2c88f36..3dbb113b792cf00fb4f89ab20f7e7fa72ecac260 100644
> --- a/drivers/net/ethernet/mediatek/mtk_wed.c
> +++ b/drivers/net/ethernet/mediatek/mtk_wed.c
> @@ -59,7 +59,9 @@ struct mtk_wed_flow_block_priv {
> static const struct mtk_wed_soc_data mt7622_data = {
> .regmap = {
> .tx_bm_tkid = 0x088,
> - .wpdma_rx_ring0 = 0x770,
> + .wpdma_rx_ring = {
> + 0x770,
> + },
> .reset_idx_tx_mask = GENMASK(3, 0),
> .reset_idx_rx_mask = GENMASK(17, 16),
> },
> @@ -70,7 +72,9 @@ static const struct mtk_wed_soc_data mt7622_data = {
> static const struct mtk_wed_soc_data mt7986_data = {
> .regmap = {
> .tx_bm_tkid = 0x0c8,
> - .wpdma_rx_ring0 = 0x770,
> + .wpdma_rx_ring = {
> + 0x770,
> + },
> .reset_idx_tx_mask = GENMASK(1, 0),
> .reset_idx_rx_mask = GENMASK(7, 6),
> },
> @@ -81,7 +85,10 @@ static const struct mtk_wed_soc_data mt7986_data = {
> static const struct mtk_wed_soc_data mt7988_data = {
> .regmap = {
> .tx_bm_tkid = 0x0c8,
> - .wpdma_rx_ring0 = 0x7d0,
> + .wpdma_rx_ring = {
> + 0x7d0,
> + 0x7d8,
> + },
> .reset_idx_tx_mask = GENMASK(1, 0),
> .reset_idx_rx_mask = GENMASK(7, 6),
> },
> @@ -621,8 +628,8 @@ mtk_wed_amsdu_init(struct mtk_wed_device *dev)
> return ret;
> }
>
> - /* eagle E1 PCIE1 tx ring 22 flow control issue */
> - if (dev->wlan.id == 0x7991)
> + /* Kite and Eagle E1 PCIE1 tx ring 22 flow control issue */
> + if (dev->wlan.id == 0x7991 || dev->wlan.id == 0x7992)
> wed_clr(dev, MTK_WED_AMSDU_FIFO, MTK_WED_AMSDU_IS_PRIOR0_RING);
>
> wed_set(dev, MTK_WED_CTRL, MTK_WED_CTRL_TX_AMSDU_EN);
> @@ -1239,7 +1246,11 @@ mtk_wed_set_wpdma(struct mtk_wed_device *dev)
> return;
>
> wed_w32(dev, MTK_WED_WPDMA_RX_GLO_CFG, dev->wlan.wpdma_rx_glo);
> - wed_w32(dev, dev->hw->soc->regmap.wpdma_rx_ring0, dev->wlan.wpdma_rx);
> + wed_w32(dev, dev->hw->soc->regmap.wpdma_rx_ring[0],
> + dev->wlan.wpdma_rx[0]);
> + if (mtk_wed_is_v3_or_greater(dev->hw))
> + wed_w32(dev, dev->hw->soc->regmap.wpdma_rx_ring[1],
> + dev->wlan.wpdma_rx[1]);
>
> if (!dev->wlan.hw_rro)
> return;
> @@ -2323,6 +2334,16 @@ mtk_wed_start(struct mtk_wed_device *dev, u32 irq_mask)
> if (!dev->rx_wdma[i].desc)
> mtk_wed_wdma_rx_ring_setup(dev, i, 16, false);
>
> + if (dev->wlan.hw_rro) {
> + for (i = 0; i < MTK_WED_RX_PAGE_QUEUES; i++) {
> + u32 addr = MTK_WED_RRO_MSDU_PG_CTRL0(i) +
> + MTK_WED_RING_OFS_COUNT;
> +
> + if (!wed_r32(dev, addr))
> + wed_w32(dev, addr, 1);
> + }
> + }
> +
> mtk_wed_hw_init(dev);
> mtk_wed_configure_irq(dev, irq_mask);
>
> diff --git a/drivers/net/ethernet/mediatek/mtk_wed.h b/drivers/net/ethernet/mediatek/mtk_wed.h
> index c1f0479d7a7182919e77c40efc30ade37abfad58..b49aee9a8b65156310e4f66a17921e5320b3077c 100644
> --- a/drivers/net/ethernet/mediatek/mtk_wed.h
> +++ b/drivers/net/ethernet/mediatek/mtk_wed.h
> @@ -17,7 +17,7 @@ struct mtk_wed_wo;
> struct mtk_wed_soc_data {
> struct {
> u32 tx_bm_tkid;
> - u32 wpdma_rx_ring0;
> + u32 wpdma_rx_ring[MTK_WED_RX_QUEUES];
> u32 reset_idx_tx_mask;
> u32 reset_idx_rx_mask;
> } regmap;
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
> index 4a82f8e4c118061fc76459dc0e38f7ee27e25a3a..36488aa6cc20117de4f5b76b80beca149015e055 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
> @@ -664,8 +664,8 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
> MT_RXQ_WED_RING_BASE;
> wed->wlan.wpdma_rx_glo = pci_resource_start(pci_dev, 0) +
> MT_WPDMA_GLO_CFG;
> - wed->wlan.wpdma_rx = pci_resource_start(pci_dev, 0) +
> - MT_RXQ_WED_DATA_RING_BASE;
> + wed->wlan.wpdma_rx[0] = pci_resource_start(pci_dev, 0) +
> + MT_RXQ_WED_DATA_RING_BASE;
> } else {
> struct platform_device *plat_dev = pdev_ptr;
> struct resource *res;
> @@ -687,7 +687,7 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr,
> wed->wlan.wpdma_tx = res->start + MT_TXQ_WED_RING_BASE;
> wed->wlan.wpdma_txfree = res->start + MT_RXQ_WED_RING_BASE;
> wed->wlan.wpdma_rx_glo = res->start + MT_WPDMA_GLO_CFG;
> - wed->wlan.wpdma_rx = res->start + MT_RXQ_WED_DATA_RING_BASE;
> + wed->wlan.wpdma_rx[0] = res->start + MT_RXQ_WED_DATA_RING_BASE;
> }
> wed->wlan.nbuf = MT7915_HW_TOKEN_SIZE;
> wed->wlan.tx_tbit[0] = is_mt7915(&dev->mt76) ? 4 : 30;
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
> index 30b40f4a91be81d429d11f15036167396756d2dc..fb2428a9b877899a0a6fb879aba84e1f6e7840f2 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
> @@ -503,9 +503,9 @@ int mt7996_mmio_wed_init(struct mt7996_dev *dev, void *pdev_ptr,
> }
>
> wed->wlan.wpdma_rx_glo = wed->wlan.phy_base + hif1_ofs + MT_WFDMA0_GLO_CFG;
> - wed->wlan.wpdma_rx = wed->wlan.phy_base + hif1_ofs +
> - MT_RXQ_RING_BASE(MT7996_RXQ_BAND0) +
> - MT7996_RXQ_BAND0 * MT_RING_SIZE;
> + wed->wlan.wpdma_rx[0] = wed->wlan.phy_base + hif1_ofs +
> + MT_RXQ_RING_BASE(MT7996_RXQ_BAND0) +
> + MT7996_RXQ_BAND0 * MT_RING_SIZE;
>
> wed->wlan.id = MT7996_DEVICE_ID_2;
> wed->wlan.tx_tbit[0] = ffs(MT_INT_TX_DONE_BAND2) - 1;
> @@ -518,9 +518,9 @@ int mt7996_mmio_wed_init(struct mt7996_dev *dev, void *pdev_ptr,
>
> wed->wlan.wpdma_rx_glo = wed->wlan.phy_base + MT_WFDMA0_GLO_CFG;
>
> - wed->wlan.wpdma_rx = wed->wlan.phy_base +
> - MT_RXQ_RING_BASE(MT7996_RXQ_BAND0) +
> - MT7996_RXQ_BAND0 * MT_RING_SIZE;
> + wed->wlan.wpdma_rx[0] = wed->wlan.phy_base +
> + MT_RXQ_RING_BASE(MT7996_RXQ_BAND0) +
> + MT7996_RXQ_BAND0 * MT_RING_SIZE;
>
> wed->wlan.wpdma_rx_rro[0] = wed->wlan.phy_base +
> MT_RXQ_RING_BASE(MT7996_RXQ_RRO_BAND0) +
> diff --git a/include/linux/soc/mediatek/mtk_wed.h b/include/linux/soc/mediatek/mtk_wed.h
> index d8949a4ed0dc9d41b3364e85a21e15d258519c45..c4ff6bab176db1f51cd94ac4198df0caeb557df2 100644
> --- a/include/linux/soc/mediatek/mtk_wed.h
> +++ b/include/linux/soc/mediatek/mtk_wed.h
> @@ -147,7 +147,7 @@ struct mtk_wed_device {
> u32 wpdma_tx;
> u32 wpdma_txfree;
> u32 wpdma_rx_glo;
> - u32 wpdma_rx;
> + u32 wpdma_rx[MTK_WED_RX_QUEUES];
> u32 wpdma_rx_rro[MTK_WED_RX_QUEUES];
> u32 wpdma_rx_pg;
>
>
> ---
> base-commit: 37816488247ddddbc3de113c78c83572274b1e2e
> change-id: 20250718-mt7992-wed-support-456a50d51f81
>
> Best regards,
> --
> Lorenzo Bianconi <lorenzo@kernel.org>
>

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