1 files changed, 44 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-bcm63xx/ioremap.h b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
new file mode 100644
index 000000000..73f31825b
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/ioremap.h
@@ -0,0 +1,44 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef BCM63XX_IOREMAP_H_
+#define BCM63XX_IOREMAP_H_
+
+#include <bcm63xx_cpu.h>
+
+static inline int is_bcm63xx_internal_registers(phys_addr_t offset)
+{
+	switch (bcm63xx_get_cpu_id()) {
+	case BCM3368_CPU_ID:
+		if (offset >= 0xfff80000)
+			return 1;
+		break;
+	case BCM6338_CPU_ID:
+	case BCM6345_CPU_ID:
+	case BCM6348_CPU_ID:
+	case BCM6358_CPU_ID:
+		if (offset >= 0xfff00000)
+			return 1;
+		break;
+	case BCM6328_CPU_ID:
+	case BCM6362_CPU_ID:
+	case BCM6368_CPU_ID:
+		if (offset >= 0xb0000000 && offset < 0xb1000000)
+			return 1;
+		break;
+	}
+	return 0;
+}
+
+static inline void __iomem *plat_ioremap(phys_addr_t offset, unsigned long size,
+					 unsigned long flags)
+{
+	if (is_bcm63xx_internal_registers(offset))
+		return (void __iomem *)offset;
+	return NULL;
+}
+
+static inline int plat_iounmap(const volatile void __iomem *addr)
+{
+	return is_bcm63xx_internal_registers((unsigned long)addr);
+}
+
+#endif /* BCM63XX_IOREMAP_H_ */