mt76: introduce mt76_mmio_read_copy routine

Add mt76_mmio_read_copy routine and the related function pointer in
mt76_bus_ops data structure. mt76_mmio_read_copy will be used to add
BIP_CMAC_128 cipher hw support to mt7615 driver
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

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

@@ -40,12 +40,18 @@ static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
 	return val;
 }
 
-static void mt76_mmio_copy(struct mt76_dev *dev, u32 offset, const void *data,
-			   int len)
+static void mt76_mmio_write_copy(struct mt76_dev *dev, u32 offset,
+				 const void *data, int len)
 {
 	__iowrite32_copy(dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4));
 }
 
+static void mt76_mmio_read_copy(struct mt76_dev *dev, u32 offset,
+				void *data, int len)
+{
+	__ioread32_copy(data, dev->mmio.regs + offset, DIV_ROUND_UP(len, 4));
+}
+
 static int mt76_mmio_wr_rp(struct mt76_dev *dev, u32 base,
 			   const struct mt76_reg_pair *data, int len)
 {
@@ -89,7 +95,8 @@ void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
 		.rr = mt76_mmio_rr,
 		.rmw = mt76_mmio_rmw,
 		.wr = mt76_mmio_wr,
-		.copy = mt76_mmio_copy,
+		.write_copy = mt76_mmio_write_copy,
+		.read_copy = mt76_mmio_read_copy,
 		.wr_rp = mt76_mmio_wr_rp,
 		.rd_rp = mt76_mmio_rd_rp,
 		.type = MT76_BUS_MMIO,

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

@@ -49,8 +49,10 @@ struct mt76_bus_ops {
 	u32 (*rr)(struct mt76_dev *dev, u32 offset);
 	void (*wr)(struct mt76_dev *dev, u32 offset, u32 val);
 	u32 (*rmw)(struct mt76_dev *dev, u32 offset, u32 mask, u32 val);
-	void (*copy)(struct mt76_dev *dev, u32 offset, const void *data,
-		     int len);
+	void (*write_copy)(struct mt76_dev *dev, u32 offset, const void *data,
+			   int len);
+	void (*read_copy)(struct mt76_dev *dev, u32 offset, void *data,
+			  int len);
 	int (*wr_rp)(struct mt76_dev *dev, u32 base,
 		     const struct mt76_reg_pair *rp, int len);
 	int (*rd_rp)(struct mt76_dev *dev, u32 base,
@@ -541,7 +543,8 @@ struct mt76_rx_status {
 #define __mt76_rr(dev, ...)	(dev)->bus->rr((dev), __VA_ARGS__)
 #define __mt76_wr(dev, ...)	(dev)->bus->wr((dev), __VA_ARGS__)
 #define __mt76_rmw(dev, ...)	(dev)->bus->rmw((dev), __VA_ARGS__)
-#define __mt76_wr_copy(dev, ...)	(dev)->bus->copy((dev), __VA_ARGS__)
+#define __mt76_wr_copy(dev, ...)	(dev)->bus->write_copy((dev), __VA_ARGS__)
+#define __mt76_rr_copy(dev, ...)	(dev)->bus->read_copy((dev), __VA_ARGS__)
 
 #define __mt76_set(dev, offset, val)	__mt76_rmw(dev, offset, 0, val)
 #define __mt76_clear(dev, offset, val)	__mt76_rmw(dev, offset, val, 0)
@@ -549,7 +552,8 @@ struct mt76_rx_status {
 #define mt76_rr(dev, ...)	(dev)->mt76.bus->rr(&((dev)->mt76), __VA_ARGS__)
 #define mt76_wr(dev, ...)	(dev)->mt76.bus->wr(&((dev)->mt76), __VA_ARGS__)
 #define mt76_rmw(dev, ...)	(dev)->mt76.bus->rmw(&((dev)->mt76), __VA_ARGS__)
-#define mt76_wr_copy(dev, ...)	(dev)->mt76.bus->copy(&((dev)->mt76), __VA_ARGS__)
+#define mt76_wr_copy(dev, ...)	(dev)->mt76.bus->write_copy(&((dev)->mt76), __VA_ARGS__)
+#define mt76_rr_copy(dev, ...)	(dev)->mt76.bus->read_copy(&((dev)->mt76), __VA_ARGS__)
 #define mt76_wr_rp(dev, ...)	(dev)->mt76.bus->wr_rp(&((dev)->mt76), __VA_ARGS__)
 #define mt76_rd_rp(dev, ...)	(dev)->mt76.bus->rd_rp(&((dev)->mt76), __VA_ARGS__)
 

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

@@ -957,7 +957,7 @@ int mt76u_init(struct mt76_dev *dev,
 		.rr = mt76u_rr,
 		.wr = mt76u_wr,
 		.rmw = mt76u_rmw,
-		.copy = mt76u_copy,
+		.write_copy = mt76u_copy,
 		.wr_rp = mt76u_wr_rp,
 		.rd_rp = mt76u_rd_rp,
 		.type = MT76_BUS_USB,