wifi: mt76: mt792x: support mt7925 chip init

add firmware download and dma init support for mt7925.

This is a preliminary patch to support mt7925 driver.
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt792x.h

@@ -36,9 +36,11 @@
 
 #define MT7921_FIRMWARE_WM	"mediatek/WIFI_RAM_CODE_MT7961_1.bin"
 #define MT7922_FIRMWARE_WM	"mediatek/WIFI_RAM_CODE_MT7922_1.bin"
+#define MT7925_FIRMWARE_WM	"mediatek/mt7925/WIFI_RAM_CODE_MT7925_1_1.bin"
 
 #define MT7921_ROM_PATCH	"mediatek/WIFI_MT7961_patch_mcu_1_2_hdr.bin"
 #define MT7922_ROM_PATCH	"mediatek/WIFI_MT7922_patch_mcu_1_1_hdr.bin"
+#define MT7925_ROM_PATCH	"mediatek/mt7925/WIFI_MT7925_PATCH_MCU_1_1_hdr.bin"
 
 struct mt792x_vif;
 struct mt792x_sta;
@@ -308,6 +310,8 @@ static inline char *mt792x_ram_name(struct mt792x_dev *dev)
 	switch (mt76_chip(&dev->mt76)) {
 	case 0x7922:
 		return MT7922_FIRMWARE_WM;
+	case 0x7925:
+		return MT7925_FIRMWARE_WM;
 	default:
 		return MT7921_FIRMWARE_WM;
 	}
@@ -318,6 +322,8 @@ static inline char *mt792x_patch_name(struct mt792x_dev *dev)
 	switch (mt76_chip(&dev->mt76)) {
 	case 0x7922:
 		return MT7922_ROM_PATCH;
+	case 0x7925:
+		return MT7925_ROM_PATCH;
 	default:
 		return MT7921_ROM_PATCH;
 	}

drivers/net/wireless/mediatek/mt76/mt792x_dma.c

@@ -88,25 +88,44 @@ EXPORT_SYMBOL_GPL(mt792x_rx_poll_complete);
 #define PREFETCH(base, depth)	((base) << 16 | (depth))
 static void mt792x_dma_prefetch(struct mt792x_dev *dev)
 {
-	mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
-	mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x40, 0x4));
-	mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x80, 0x4));
-	mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0xc0, 0x4));
-	mt76_wr(dev, MT_WFDMA0_RX_RING5_EXT_CTRL, PREFETCH(0x100, 0x4));
-
-	mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x140, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x180, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x1c0, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x200, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x240, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x280, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x2c0, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x340, 0x4));
-	mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
+	if (is_mt7925(&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, 0x10));
+		mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x0200, 0x10));
+		mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x0300, 0x10));
+		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 {
+		/* rx ring */
+		mt76_wr(dev, MT_WFDMA0_RX_RING0_EXT_CTRL, PREFETCH(0x0, 0x4));
+		mt76_wr(dev, MT_WFDMA0_RX_RING2_EXT_CTRL, PREFETCH(0x40, 0x4));
+		mt76_wr(dev, MT_WFDMA0_RX_RING3_EXT_CTRL, PREFETCH(0x80, 0x4));
+		mt76_wr(dev, MT_WFDMA0_RX_RING4_EXT_CTRL, PREFETCH(0xc0, 0x4));
+		mt76_wr(dev, MT_WFDMA0_RX_RING5_EXT_CTRL, PREFETCH(0x100, 0x4));
+		/* tx ring */
+		mt76_wr(dev, MT_WFDMA0_TX_RING0_EXT_CTRL, PREFETCH(0x140, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING1_EXT_CTRL, PREFETCH(0x180, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING2_EXT_CTRL, PREFETCH(0x1c0, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING3_EXT_CTRL, PREFETCH(0x200, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING4_EXT_CTRL, PREFETCH(0x240, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING5_EXT_CTRL, PREFETCH(0x280, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING6_EXT_CTRL, PREFETCH(0x2c0, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING16_EXT_CTRL, PREFETCH(0x340, 0x4));
+		mt76_wr(dev, MT_WFDMA0_TX_RING17_EXT_CTRL, PREFETCH(0x380, 0x4));
+	}
 }
 
 int mt792x_dma_enable(struct mt792x_dev *dev)
 {
+	if (is_mt7925(&dev->mt76))
+		mt76_rmw(dev, MT_UWFDMA0_GLO_CFG_EXT1, BIT(28), BIT(28));
+
 	/* configure perfetch settings */
 	mt792x_dma_prefetch(dev);