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path: root/drivers/net/wireless/mediatek/mt76/mt7996/dma.c
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2025-05-22wifi: mt76: mt7996: fix RX buffer size of MCU eventShayne Chen
Some management frames are first processed by the firmware and then passed to the driver through the MCU event rings. In CONNAC3, event rings do not support scatter-gather and have a size limitation of 2048 bytes. If a packet sized between 1728 and 2048 bytes arrives from an event ring, the ring will hang because the driver attempts to use scatter-gather to process it. To fix this, include the size of struct skb_shared_info in the MCU RX buffer size to prevent scatter-gather from being used for event skb in mt76_dma_rx_fill_buf(). Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Co-developed-by: Peter Chiu <chui-hao.chiu@mediatek.com> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Link: https://patch.msgid.link/20250515032952.1653494-7-shayne.chen@mediatek.com Signed-off-by: Felix Fietkau <nbd@nbd.name>
2025-05-21wifi: mt76: mt7996: rework DMA configuration for mt7990Peter Chiu
Modify DMA ring setting for mt7990. This is a preliminary patch to support mt7990 chipset. Co-developed-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Link: https://patch.msgid.link/20250409140750.724437-5-shayne.chen@mediatek.com Signed-off-by: Felix Fietkau <nbd@nbd.name>
2024-06-20wifi: mt76: un-embedd netdev from mt76_devBreno Leitao
Embedding net_device into structures prohibits the usage of flexible arrays in the net_device structure. For more details, see the discussion at [1]. Un-embed the net_devices from struct mt76_dev by converting them into pointers, and allocating them dynamically. Use the leverage alloc_netdev_dummy() to allocate the net_device object at mt76_dma_init(). The free of the device occurs at mt76_dma_cleanup(). Link: https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ [1] Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Acked-by: Kalle Valo <kvalo@kernel.org> Link: https://patch.msgid.link/20240619105311.3144908-1-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-02-22wifi: mt76: move wed common utilities in wed.cLorenzo Bianconi
Introduce wed.c in order to collect mt76 wed common codebase used by mt7915 and mt7996 drivers. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2024-02-22wifi: mt76: mt7996: fix fw loading timeoutLorenzo Bianconi
Fix the following firmware loading error due to a wrong dma register configuration if wed is disabled. [ 8.245881] mt7996e_hif 0001:01:00.0: assign IRQ: got 128 [ 8.251308] mt7996e_hif 0001:01:00.0: enabling device (0000 -> 0002) [ 8.257674] mt7996e_hif 0001:01:00.0: enabling bus mastering [ 8.263488] mt7996e 0000:01:00.0: assign IRQ: got 126 [ 8.268537] mt7996e 0000:01:00.0: enabling device (0000 -> 0002) [ 8.274551] mt7996e 0000:01:00.0: enabling bus mastering [ 28.648773] mt7996e 0000:01:00.0: Message 00000010 (seq 1) timeout [ 28.654959] mt7996e 0000:01:00.0: Failed to get patch semaphore [ 29.661033] mt7996e: probe of 0000:01:00.0 failed with error -11 Suggested-by: Sujuan Chen" <sujuan.chen@mediatek.com> Fixes: 4920a3a1285f ("wifi: mt76: mt7996: set DMA mask to 36 bits for boards with more than 4GB of RAM") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-11wifi: mt76: mt7996: set DMA mask to 36 bits for boards with more than 4GB of RAMSujuan Chen
Introduce the capability to run mt7996 driver on boards with more than 4GB of memory. Co-developed-by: Rex Lu <rex.lu@mediatek.com> Signed-off-by: Rex Lu <rex.lu@mediatek.com> Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: add DMA support for mt7992Benjamin Lin
Add DMA TX/RX queues and RRO init flow for mt7992 chipsets. This is a preliminary patch for mt7992 chipsets support. Co-developed-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Co-developed-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Benjamin Lin <benjamin-jw.lin@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: introduce mt7996_band_valid()Shayne Chen
Replace dbdc_support and tbtc_support with mt7996_band_valid() to support mt7996 variants with band0/band2 dual-band support. This changes reduces ambiguity when checking supported bands on different variants or new chipsets, as well as during the init configurations on DMA TX/RX queues or irq masks. Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: adjust WFDMA settings to improve performancePeter Chiu
Refactor and update dma prefetch parts and also split band 1 traffic to PCIe 1 to enhance throughput. Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: add wed reset supportLorenzo Bianconi
Introduce the capability to reset mt7996 chipset if requested by wed driver. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: add wed rx supportBo Jiao
Similar to MT7915, enable Wireless Ethernet Ditpatcher for MT7996 to offload traffic received from the WLAN nic and transmitted on the LAN one Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Co-developed-by: Sujuan Chen <sujuan.chen@mediatek.com> Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com> Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: mt7996: add wed tx supportSujuan Chen
Similar to MT7915, enable Wireless Ethernet Ditpatcher for MT7996 to offload traffic received from the LAN nic and transmitted on the WLAN one Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-12-07wifi: mt76: introduce wed pointer in mt76_queueLorenzo Bianconi
Introduce mtk_wed_device pointer in mt76_queue structure in order to configure WED chip. Get rid of dev parameter in Q_READ and Q_WRITE macros. Introduce wed parameter to the following routine signatures: - mt76_init_queue - mt76_init_tx_queue This is a preliminary patch to introduce WED support for mt7996 since mt7996 runs two separate WED chips. Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-07-25wifi: mt76: mt7996: fix WA event ring sizeStanleyYP Wang
Fix rx ring size of WA event to get rid of event loss and queue overflow problems. Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices") Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-07-25wifi: mt76: mt7996: disable WFDMA Tx/Rx during SER recoveryBo Jiao
Stop WFDMA transaction to avoid potential unexpected issue while doing system recovery. Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2023-04-17wifi: mt76: mt7996: enable full system reset supportBo Jiao
Add mt7996_reset() and refactor mt7996_mac_reset_work() to support full system recovery. Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com> Signed-off-by: Ryder Lee <ryder.lee@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
2022-12-01wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devicesShayne Chen
The driver first supports Filogic 680 PCI device, which is a Wi-Fi 7 chipset supporting concurrent tri-band operation at 6 GHz, 5 GHz, and 2.4 GHz with 4x4 antennas on each band. Currently, mt7996 only supports tri-band HE or older mode. EHT mode and more variants of Filogic 680 support will be introduced in further patches. Reviewed-by: Ryder Lee <ryder.lee@mediatek.com> Co-developed-by: Peter Chiu <chui-hao.chiu@mediatek.com> Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com> Co-developed-by: Bo Jiao <Bo.Jiao@mediatek.com> Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com> Co-developed-by: Howard Hsu <howard-yh.hsu@mediatek.com> Signed-off-by: Howard Hsu <howard-yh.hsu@mediatek.com> Co-developed-by: MeiChia Chiu <meichia.chiu@mediatek.com> Signed-off-by: MeiChia Chiu <meichia.chiu@mediatek.com> Co-developed-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com> Co-developed-by: Money Wang <Money.Wang@mediatek.com> Signed-off-by: Money Wang <Money.Wang@mediatek.com> Co-developed-by: Evelyn Tsai <evelyn.tsai@mediatek.com> Signed-off-by: Evelyn Tsai <evelyn.tsai@mediatek.com> Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> Signed-off-by: Felix Fietkau <nbd@nbd.name>
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