wifi: mt76: mt7915: enable wed for mt7986 chipset

Introduce wed tx support for MT7986 chipset
Tested-by: Daniel Golle <daniel@makrotopia.org>
Co-developed-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
Co-developed-by: Sujuan Chen <sujuan.chen@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>

drivers/net/wireless/mediatek/mt76/mt7915/dma.c

@@ -324,6 +324,7 @@ static int mt7915_dma_enable(struct mt7915_dev *dev)
 
 		wed_irq_mask |= MT_INT_TX_DONE_BAND0 | MT_INT_TX_DONE_BAND1;
 		mt76_wr(dev, MT_INT_WED_MASK_CSR, wed_irq_mask);
+		mt76_wr(dev, MT_INT_MASK_CSR, wed_irq_mask);
 		mtk_wed_device_start(&dev->mt76.mmio.wed, wed_irq_mask);
 	}
 

drivers/net/wireless/mediatek/mt76/mt7915/mmio.c

@@ -541,7 +541,18 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, struct pci_dev *pdev,
 	wed->wlan.pci_dev = pdev;
 	wed->wlan.wpdma_phys = pci_resource_start(pdev, 0) +
 			       MT_WFDMA_EXT_CSR_BASE;
+	wed->wlan.wpdma_int = pci_resource_start(pdev, 0) +
+			      MT_INT_WED_SOURCE_CSR;
+	wed->wlan.wpdma_mask = pci_resource_start(pdev, 0) +
+			       MT_INT_WED_MASK_CSR;
+	wed->wlan.wpdma_tx = pci_resource_start(pdev, 0) +
+			     MT_TXQ_WED_RING_BASE;
+	wed->wlan.wpdma_txfree = pci_resource_start(pdev, 0) +
+				 MT_RXQ_WED_RING_BASE;
 	wed->wlan.nbuf = 4096;
+	wed->wlan.tx_tbit[0] = MT_WED_TX_DONE_BAND0;
+	wed->wlan.tx_tbit[1] = MT_WED_TX_DONE_BAND1;
+	wed->wlan.txfree_tbit = MT_WED_TX_FREE_DONE;
 	wed->wlan.token_start = MT7915_TOKEN_SIZE - wed->wlan.nbuf;
 	wed->wlan.init_buf = mt7915_wed_init_buf;
 	wed->wlan.offload_enable = mt7915_mmio_wed_offload_enable;

drivers/net/wireless/mediatek/mt76/mt7915/regs.h

@@ -596,6 +596,7 @@ enum offs_rev {
 #define MT_PCIE_RECOG_ID_MASK		GENMASK(30, 0)
 #define MT_PCIE_RECOG_ID_SEM		BIT(31)
 
+#define MT_INT_WED_SOURCE_CSR		MT_WFDMA_EXT_CSR(0x200)
 #define MT_INT_WED_MASK_CSR		MT_WFDMA_EXT_CSR(0x204)
 
 #define MT_WED_TX_RING_BASE		MT_WFDMA_EXT_CSR(0x300)
@@ -642,6 +643,13 @@ enum offs_rev {
 #define MT_TXQ_EXT_CTRL(q)		(MT_Q_BASE(__TXQ(q)) + 0x600 +	\
 					 MT_TXQ_ID(q)* 0x4)
 
+#define MT_TXQ_WED_RING_BASE		0xd7300
+#define MT_RXQ_WED_RING_BASE		0xd7410
+
+#define MT_WED_TX_DONE_BAND0		4
+#define MT_WED_TX_DONE_BAND1		5
+#define MT_WED_TX_FREE_DONE		1
+
 #define MT_INT_SOURCE_CSR		__REG(INT_SOURCE_CSR)
 #define MT_INT_MASK_CSR			__REG(INT_MASK_CSR)