mt76: mt7921: add mt7921u driver

Introduce support for MT7921U 802.11ax 2x2:2SS wireless devices. Tested-by: Sean Wang <sean.wang@mediatek.com> Tested-by: Deren Wu <deren.wu@mediatek.com> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Felix Fietkau <nbd@nbd.name>
mariux64 · Mar 16, 2022 · 0d2afe0 · 0d2afe0
1 parent 8b7a56d
commit 0d2afe0
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Showing 9 changed files with 635 additions and 3 deletions.
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig b/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
@@ -24,3 +24,14 @@ config MT7921S
 	  This adds support for MT7921S 802.11ax 2x2:2SS wireless devices.
 
 	  To compile this driver as a module, choose M here.
+
+config MT7921U
+	tristate "MediaTek MT7921U (USB) support"
+	select MT76_USB
+	select MT7921_COMMON
+	depends on MAC80211
+	depends on USB
+	help
+	  This adds support for MT7921U 802.11ax 2x2:2SS wireless devices.
+
+	  To compile this driver as a module, choose M here.
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
@@ -3,10 +3,12 @@
 obj-$(CONFIG_MT7921_COMMON) += mt7921-common.o
 obj-$(CONFIG_MT7921E) += mt7921e.o
 obj-$(CONFIG_MT7921S) += mt7921s.o
+obj-$(CONFIG_MT7921U) += mt7921u.o
 
 CFLAGS_trace.o := -I$(src)
 
 mt7921-common-y := mac.o mcu.o main.o init.o debugfs.o trace.o
 mt7921-common-$(CONFIG_NL80211_TESTMODE) += testmode.o
 mt7921e-y := pci.o pci_mac.o pci_mcu.o dma.o
 mt7921s-y := sdio.o sdio_mac.o sdio_mcu.o
+mt7921u-y := usb.o usb_mac.o
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -233,7 +233,7 @@ int mt7921_register_device(struct mt7921_dev *dev)
 		dev->pm.ds_enable = true;
 	}
 
-	if (mt76_is_sdio(&dev->mt76))
+	if (!mt76_is_mmio(&dev->mt76))
 		hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE;
 
 	ret = mt7921_init_hardware(dev);

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.h b/drivers/net/wireless/mediatek/mt76/mt7921/mac.h
@@ -202,6 +202,7 @@ enum tx_mcu_port_q_idx {
 #define MT_SDIO_TXD_SIZE		(MT_TXD_SIZE + 8 * 4)
 #define MT_SDIO_TAIL_SIZE		8
 #define MT_SDIO_HDR_SIZE		4
+#define MT_USB_TAIL_SIZE		4
 
 #define MT_TXD0_Q_IDX			GENMASK(31, 25)
 #define MT_TXD0_PKT_FMT			GENMASK(24, 23)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -264,7 +264,7 @@ static int mt7921_start(struct ieee80211_hw *hw)
 	return err;
 }
 
-static void mt7921_stop(struct ieee80211_hw *hw)
+void mt7921_stop(struct ieee80211_hw *hw)
 {
 	struct mt7921_dev *dev = mt7921_hw_dev(hw);
 	struct mt7921_phy *phy = mt7921_hw_phy(hw);
@@ -281,6 +281,7 @@ static void mt7921_stop(struct ieee80211_hw *hw)
 	mt76_connac_mcu_set_mac_enable(&dev->mt76, 0, false, false);
 	mt7921_mutex_release(dev);
 }
+EXPORT_SYMBOL_GPL(mt7921_stop);
 
 static int mt7921_add_interface(struct ieee80211_hw *hw,
 				struct ieee80211_vif *vif)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -30,6 +30,7 @@
 
 #define MT7921_DRV_OWN_RETRY_COUNT	10
 #define MT7921_MCU_INIT_RETRY_COUNT	10
+#define MT7921_WFSYS_INIT_RETRY_COUNT	2
 
 #define MT7921_FIRMWARE_WM		"mediatek/WIFI_RAM_CODE_MT7961_1.bin"
 #define MT7921_ROM_PATCH		"mediatek/WIFI_MT7961_patch_mcu_1_2_hdr.bin"
@@ -365,6 +366,7 @@ mt7921_skb_add_usb_sdio_hdr(struct mt7921_dev *dev, struct sk_buff *skb,
 	put_unaligned_le32(hdr, skb_push(skb, sizeof(hdr)));
 }
 
+void mt7921_stop(struct ieee80211_hw *hw);
 int mt7921_mac_init(struct mt7921_dev *dev);
 bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask);
 void mt7921_mac_reset_counters(struct mt7921_phy *phy);
@@ -456,4 +458,14 @@ int mt7921_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 void mt7921_usb_sdio_tx_complete_skb(struct mt76_dev *mdev,
 				     struct mt76_queue_entry *e);
 bool mt7921_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update);
+
+/* usb */
+#define MT_USB_TYPE_VENDOR	(USB_TYPE_VENDOR | 0x1f)
+#define MT_USB_TYPE_UHW_VENDOR	(USB_TYPE_VENDOR | 0x1e)
+
+int mt7921u_mcu_power_on(struct mt7921_dev *dev);
+int mt7921u_wfsys_reset(struct mt7921_dev *dev);
+int mt7921u_dma_init(struct mt7921_dev *dev);
+int mt7921u_init_reset(struct mt7921_dev *dev);
+int mt7921u_mac_reset(struct mt7921_dev *dev);
 #endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/regs.h b/drivers/net/wireless/mediatek/mt76/mt7921/regs.h
@@ -353,6 +353,7 @@
 #define MT_WFDMA0_GLO_CFG_RX_DMA_EN	BIT(2)
 #define MT_WFDMA0_GLO_CFG_RX_DMA_BUSY	BIT(3)
 #define MT_WFDMA0_GLO_CFG_TX_WB_DDONE	BIT(6)
+#define MT_WFDMA0_GLO_CFG_FW_DWLD_BYPASS_DMASHDL BIT(9)
 #define MT_WFDMA0_GLO_CFG_FIFO_LITTLE_ENDIAN	BIT(12)
 #define MT_WFDMA0_GLO_CFG_CSR_DISP_BASE_PTR_CHAIN_EN BIT(15)
 #define MT_WFDMA0_GLO_CFG_OMIT_RX_INFO_PFET2	BIT(21)
@@ -377,6 +378,9 @@
 #define MT_WFDMA0_TX_RING16_EXT_CTRL	MT_WFDMA0(0x640)
 #define MT_WFDMA0_TX_RING17_EXT_CTRL	MT_WFDMA0(0x644)
 
+#define MT_WPDMA0_MAX_CNT_MASK		GENMASK(7, 0)
+#define MT_WPDMA0_BASE_PTR_MASK		GENMASK(31, 16)
+
 #define MT_WFDMA0_RX_RING0_EXT_CTRL	MT_WFDMA0(0x680)
 #define MT_WFDMA0_RX_RING1_EXT_CTRL	MT_WFDMA0(0x684)
 #define MT_WFDMA0_RX_RING2_EXT_CTRL	MT_WFDMA0(0x688)
@@ -425,6 +429,10 @@
 #define MT_WFDMA_DUMMY_CR		MT_MCU_WPDMA0(0x120)
 #define MT_WFDMA_NEED_REINIT		BIT(1)
 
+#define MT_CBTOP_RGU(ofs)		(0x70002000 + (ofs))
+#define MT_CBTOP_RGU_WF_SUBSYS_RST	MT_CBTOP_RGU(0x600)
+#define MT_CBTOP_RGU_WF_SUBSYS_RST_WF_WHOLE_PATH BIT(0)
+
 #define MT_HW_BOUND			0x70010020
 #define MT_HW_CHIPID			0x70010200
 #define MT_HW_REV			0x70010204
@@ -433,12 +441,14 @@
 #define MT_PCIE_MAC(ofs)		(MT_PCIE_MAC_BASE + (ofs))
 #define MT_PCIE_MAC_INT_ENABLE		MT_PCIE_MAC(0x188)
 
-#define MT_DMA_SHDL(ofs)		(0xd6000 + (ofs))
+#define MT_DMA_SHDL(ofs)		(0x7c026000 + (ofs))
 #define MT_DMASHDL_SW_CONTROL		MT_DMA_SHDL(0x004)
 #define MT_DMASHDL_DMASHDL_BYPASS	BIT(28)
 #define MT_DMASHDL_OPTIONAL		MT_DMA_SHDL(0x008)
 #define MT_DMASHDL_PAGE			MT_DMA_SHDL(0x00c)
+#define MT_DMASHDL_GROUP_SEQ_ORDER	BIT(16)
 #define MT_DMASHDL_REFILL		MT_DMA_SHDL(0x010)
+#define MT_DMASHDL_REFILL_MASK		GENMASK(31, 16)
 #define MT_DMASHDL_PKT_MAX_SIZE		MT_DMA_SHDL(0x01c)
 #define MT_DMASHDL_PKT_MAX_SIZE_PLE	GENMASK(11, 0)
 #define MT_DMASHDL_PKT_MAX_SIZE_PSE	GENMASK(27, 16)
@@ -453,6 +463,43 @@
 
 #define MT_DMASHDL_SCHED_SET(_n)	MT_DMA_SHDL(0x070 + ((_n) << 2))
 
+#define MT_WFDMA_HOST_CONFIG		0x7c027030
+#define MT_WFDMA_HOST_CONFIG_USB_RXEVT_EP4_EN	BIT(6)
+
+#define MT_UMAC(ofs)			(0x74000000 + (ofs))
+#define MT_UDMA_TX_QSEL			MT_UMAC(0x008)
+#define MT_FW_DL_EN			BIT(3)
+
+#define MT_UDMA_WLCFG_1			MT_UMAC(0x00c)
+#define MT_WL_RX_AGG_PKT_LMT		GENMASK(7, 0)
+#define MT_WL_TX_TMOUT_LMT		GENMASK(27, 8)
+
+#define MT_UDMA_WLCFG_0			MT_UMAC(0x18)
+#define MT_WL_RX_AGG_TO			GENMASK(7, 0)
+#define MT_WL_RX_AGG_LMT		GENMASK(15, 8)
+#define MT_WL_TX_TMOUT_FUNC_EN		BIT(16)
+#define MT_WL_TX_DPH_CHK_EN		BIT(17)
+#define MT_WL_RX_MPSZ_PAD0		BIT(18)
+#define MT_WL_RX_FLUSH			BIT(19)
+#define MT_TICK_1US_EN			BIT(20)
+#define MT_WL_RX_AGG_EN			BIT(21)
+#define MT_WL_RX_EN			BIT(22)
+#define MT_WL_TX_EN			BIT(23)
+#define MT_WL_RX_BUSY			BIT(30)
+#define MT_WL_TX_BUSY			BIT(31)
+
+#define MT_UDMA_CONN_INFRA_STATUS	MT_UMAC(0xa20)
+#define MT_UDMA_CONN_WFSYS_INIT_DONE	BIT(22)
+#define MT_UDMA_CONN_INFRA_STATUS_SEL	MT_UMAC(0xa24)
+
+#define MT_SSUSB_EPCTL_CSR(ofs)		(0x74011800 + (ofs))
+#define MT_SSUSB_EPCTL_CSR_EP_RST_OPT	MT_SSUSB_EPCTL_CSR(0x090)
+
+#define MT_UWFDMA0(ofs)			(0x7c024000 + (ofs))
+#define MT_UWFDMA0_GLO_CFG		MT_UWFDMA0(0x208)
+#define MT_UWFDMA0_GLO_CFG_EXT0		MT_UWFDMA0(0x2b0)
+#define MT_UWFDMA0_TX_RING_EXT_CTRL(_n)	MT_UWFDMA0(0x600 + ((_n) << 2))
+
 #define MT_CONN_STATUS			0x7c053c10
 #define MT_WIFI_PATCH_DL_STATE		BIT(0)
 
@@ -466,6 +513,7 @@
 #define WFSYS_SW_INIT_DONE		BIT(4)
 
 #define MT_CONN_ON_MISC			0x7c0600f0
+#define MT_TOP_MISC2_FW_PWR_ON		BIT(0)
 #define MT_TOP_MISC2_FW_N9_RDY		GENMASK(1, 0)
 
 #endif