Initial import

1 files changed, 211 insertions, 0 deletions

diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
new file mode 100644
index 000000000..9cc00dbd5
--- /dev/null
+++ b/arch/m32r/include/asm/io.h
@@ -0,0 +1,211 @@
+#ifndef _ASM_M32R_IO_H
+#define _ASM_M32R_IO_H
+
+#include <linux/string.h>
+#include <linux/compiler.h>
+#include <asm/page.h>  /* __va */
+
+#ifdef __KERNEL__
+
+#define IO_SPACE_LIMIT  0xFFFFFFFF
+
+/**
+ *	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(volatile void * address)
+{
+	return __pa(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 __va(address);
+}
+
+extern void __iomem *
+__ioremap(unsigned long offset, unsigned long size, unsigned long flags);
+
+/**
+ *	ioremap		-	map bus memory into CPU space
+ *	@offset:	bus address of the memory
+ *	@size:		size of the resource to map
+ *
+ *	ioremap performs a platform specific sequence of operations to
+ *	make bus memory CPU accessible via the readb/readw/readl/writeb/
+ *	writew/writel functions and the other mmio helpers. The returned
+ *	address is not guaranteed to be usable directly as a virtual
+ *	address.
+ */
+
+static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
+{
+	return __ioremap(offset, size, 0);
+}
+
+extern void iounmap(volatile void __iomem *addr);
+#define ioremap_nocache(off,size) ioremap(off,size)
+#define ioremap_wc ioremap_nocache
+
+/*
+ * IO bus memory addresses are also 1:1 with the physical address
+ */
+#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
+#define page_to_bus	page_to_phys
+#define virt_to_bus	virt_to_phys
+
+extern unsigned char _inb(unsigned long);
+extern unsigned short _inw(unsigned long);
+extern unsigned long _inl(unsigned long);
+extern unsigned char _inb_p(unsigned long);
+extern unsigned short _inw_p(unsigned long);
+extern unsigned long _inl_p(unsigned long);
+extern void _outb(unsigned char, unsigned long);
+extern void _outw(unsigned short, unsigned long);
+extern void _outl(unsigned long, unsigned long);
+extern void _outb_p(unsigned char, unsigned long);
+extern void _outw_p(unsigned short, unsigned long);
+extern void _outl_p(unsigned long, unsigned long);
+extern void _insb(unsigned int, void *, unsigned long);
+extern void _insw(unsigned int, void *, unsigned long);
+extern void _insl(unsigned int, void *, unsigned long);
+extern void _outsb(unsigned int, const void *, unsigned long);
+extern void _outsw(unsigned int, const void *, unsigned long);
+extern void _outsl(unsigned int, const void *, unsigned long);
+
+static inline unsigned char _readb(unsigned long addr)
+{
+	return *(volatile unsigned char __force *)addr;
+}
+
+static inline unsigned short _readw(unsigned long addr)
+{
+	return *(volatile unsigned short __force *)addr;
+}
+
+static inline unsigned long _readl(unsigned long addr)
+{
+	return *(volatile unsigned long __force *)addr;
+}
+
+static inline void _writeb(unsigned char b, unsigned long addr)
+{
+	*(volatile unsigned char __force *)addr = b;
+}
+
+static inline void _writew(unsigned short w, unsigned long addr)
+{
+	*(volatile unsigned short __force *)addr = w;
+}
+
+static inline void _writel(unsigned long l, unsigned long addr)
+{
+	*(volatile unsigned long __force *)addr = l;
+}
+
+#define inb     _inb
+#define inw     _inw
+#define inl     _inl
+#define outb    _outb
+#define outw    _outw
+#define outl    _outl
+
+#define inb_p   _inb_p
+#define inw_p   _inw_p
+#define inl_p   _inl_p
+#define outb_p  _outb_p
+#define outw_p  _outw_p
+#define outl_p  _outl_p
+
+#define insb    _insb
+#define insw    _insw
+#define insl    _insl
+#define outsb   _outsb
+#define outsw   _outsw
+#define outsl   _outsl
+
+#define readb(addr)   _readb((unsigned long)(addr))
+#define readw(addr)   _readw((unsigned long)(addr))
+#define readl(addr)   _readl((unsigned long)(addr))
+#define __raw_readb readb
+#define __raw_readw readw
+#define __raw_readl readl
+#define readb_relaxed readb
+#define readw_relaxed readw
+#define readl_relaxed readl
+
+#define writeb(val, addr)  _writeb((val), (unsigned long)(addr))
+#define writew(val, addr)  _writew((val), (unsigned long)(addr))
+#define writel(val, addr)  _writel((val), (unsigned long)(addr))
+#define __raw_writeb writeb
+#define __raw_writew writew
+#define __raw_writel writel
+#define writeb_relaxed writeb
+#define writew_relaxed writew
+#define writel_relaxed writel
+
+#define ioread8 read
+#define ioread16 readw
+#define ioread32 readl
+#define iowrite8 writeb
+#define iowrite16 writew
+#define iowrite32 writel
+
+#define mmiowb()
+
+#define flush_write_buffers() do { } while (0)  /* M32R_FIXME */
+
+static inline void
+memset_io(volatile void __iomem *addr, unsigned char val, int count)
+{
+	memset((void __force *) addr, val, count);
+}
+
+static inline void
+memcpy_fromio(void *dst, volatile void __iomem *src, int count)
+{
+	memcpy(dst, (void __force *) src, count);
+}
+
+static inline void
+memcpy_toio(volatile void __iomem *dst, const void *src, int count)
+{
+	memcpy((void __force *) dst, src, count);
+}
+
+/*
+ * 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  /* __KERNEL__ */
+
+#endif  /* _ASM_M32R_IO_H */