1 files changed, 100 insertions, 0 deletions

diff --git a/include/asm-cris/io.h b/include/asm-cris/io.h
new file mode 100644
index 000000000000..1d2b51701e8d
--- /dev/null
+++ b/include/asm-cris/io.h
@@ -0,0 +1,100 @@
+#ifndef _ASM_CRIS_IO_H
+#define _ASM_CRIS_IO_H
+
+#include <asm/page.h>   /* for __va, __pa */
+#include <asm/arch/io.h>
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ */
+
+extern inline unsigned long virt_to_phys(volatile void * address)
+{
+        return __pa(address);
+}
+
+extern inline void * phys_to_virt(unsigned long address)
+{
+        return __va(address);
+}
+
+extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
+
+extern inline void * ioremap (unsigned long offset, unsigned long size)
+{
+        return __ioremap(offset, size, 0);
+}
+
+extern void iounmap(void *addr);
+
+/*
+ * IO bus memory addresses are also 1:1 with the physical address
+ */
+#define virt_to_bus virt_to_phys
+#define bus_to_virt phys_to_virt
+
+/*
+ * readX/writeX() are used to access memory mapped devices. On some
+ * architectures the memory mapped IO stuff needs to be accessed
+ * differently. On the CRIS architecture, we just read/write the
+ * memory location directly.
+ */
+#define readb(addr) (*(volatile unsigned char *) (addr))
+#define readw(addr) (*(volatile unsigned short *) (addr))
+#define readl(addr) (*(volatile unsigned int *) (addr))
+#define readb_relaxed(addr) readb(addr)
+#define readw_relaxed(addr) readw(addr)
+#define readl_relaxed(addr) readl(addr)
+#define __raw_readb readb
+#define __raw_readw readw
+#define __raw_readl readl
+
+#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
+#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
+#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+
+#define mmiowb()
+
+#define memset_io(a,b,c)        memset((void *)(a),(b),(c))
+#define memcpy_fromio(a,b,c)    memcpy((a),(void *)(b),(c))
+#define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
+
+/*
+ * Again, CRIS does not require mem IO specific function.
+ */
+
+#define eth_io_copy_and_sum(a,b,c,d)    eth_copy_and_sum((a),(void *)(b),(c),(d))
+
+/* The following is junk needed for the arch-independent code but which
+ * we never use in the CRIS port
+ */
+
+#define IO_SPACE_LIMIT 0xffff
+#define inb(x) (0)
+#define inw(x) (0)
+#define inl(x) (0)
+#define outb(x,y)
+#define outw(x,y)
+#define outl(x,y)
+#define insb(x,y,z)
+#define insw(x,y,z)
+#define insl(x,y,z)
+#define outsb(x,y,z)
+#define outsw(x,y,z)
+#define outsl(x,y,z)
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem
+ * access
+ */
+#define xlate_dev_mem_ptr(p)    __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p)   p
+
+#endif