1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mmio.c b/drivers/net/wireless/mediatek/mt76/mmio.c
new file mode 100644
index 000000000..26353b6bc
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mmio.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: ISC
+/*
+ * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
+ */
+
+#include "mt76.h"
+#include "trace.h"
+
+static u32 mt76_mmio_rr(struct mt76_dev *dev, u32 offset)
+{
+	u32 val;
+
+	val = readl(dev->mmio.regs + offset);
+	trace_reg_rr(dev, offset, val);
+
+	return val;
+}
+
+static void mt76_mmio_wr(struct mt76_dev *dev, u32 offset, u32 val)
+{
+	trace_reg_wr(dev, offset, val);
+	writel(val, dev->mmio.regs + offset);
+}
+
+static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
+{
+	val |= mt76_mmio_rr(dev, offset) & ~mask;
+	mt76_mmio_wr(dev, offset, val);
+	return val;
+}
+
+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)
+{
+	while (len > 0) {
+		mt76_mmio_wr(dev, data->reg, data->value);
+		data++;
+		len--;
+	}
+
+	return 0;
+}
+
+static int mt76_mmio_rd_rp(struct mt76_dev *dev, u32 base,
+			   struct mt76_reg_pair *data, int len)
+{
+	while (len > 0) {
+		data->value = mt76_mmio_rr(dev, data->reg);
+		data++;
+		len--;
+	}
+
+	return 0;
+}
+
+void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr,
+		       u32 clear, u32 set)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->mmio.irq_lock, flags);
+	dev->mmio.irqmask &= ~clear;
+	dev->mmio.irqmask |= set;
+	if (addr)
+		mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
+	spin_unlock_irqrestore(&dev->mmio.irq_lock, flags);
+}
+EXPORT_SYMBOL_GPL(mt76_set_irq_mask);
+
+void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
+{
+	static const struct mt76_bus_ops mt76_mmio_ops = {
+		.rr = mt76_mmio_rr,
+		.rmw = mt76_mmio_rmw,
+		.wr = mt76_mmio_wr,
+		.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,
+	};
+
+	dev->bus = &mt76_mmio_ops;
+	dev->mmio.regs = regs;
+
+	spin_lock_init(&dev->mmio.irq_lock);
+}
+EXPORT_SYMBOL_GPL(mt76_mmio_init);