From: Antony Pavlov <antonynpavlov@xxxxxxxxx>
Signed-off-by: Antony Pavlov <antonynpavlov@xxxxxxxxx>
Signed-off-by: Peter Mamonov <pmamonov@xxxxxxxxx>
Signed-off-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
---
changes.
v2:
- make use of use CPHYSADDR and CKSEG0ADDR
arch/mips/include/asm/io.h | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 4bee5913a..d4eb623c3 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -12,11 +12,46 @@
#include <linux/compiler.h>
#include <asm/types.h>
+#include <asm/addrspace.h>
#include <asm/byteorder.h>
void dma_flush_range(unsigned long, unsigned long);
void dma_inv_range(unsigned long, unsigned long);
+/*
+ * virt_to_phys - map virtual addresses to physical
+ * @address: address to remap
+ *
+ * The returned physical address is the physical (CPU) mapping for
+ * the memory address given. It is only valid to use this function on
+ * addresses directly mapped or allocated via kmalloc.
+ *
+ * This function does not give bus mappings for DMA transfers. In
+ * almost all conceivable cases a device driver should not be using
+ * this function
+ */
+static inline unsigned long virt_to_phys(const void *address)
+{
+ return (unsigned long)CPHYSADDR(address);
+}
+
+/*
+ * phys_to_virt - map physical address to virtual
+ * @address: address to remap
+ *
+ * The returned virtual address is a current CPU mapping for
+ * the memory address given. It is only valid to use this function on
+ * addresses that have a kernel mapping
+ *
+ * This function does not handle bus mappings for DMA transfers. In
+ * almost all conceivable cases a device driver should not be using
+ * this function
+ */
+static inline void *phys_to_virt(unsigned long address)
+{
+ return (void *)CKSEG0ADDR(address);
+}
+
#define IO_SPACE_LIMIT 0
/*****************************************************************************/
--
2.11.0
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
