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    Subject[PATCH 35/58] microblaze_v5: io.h IO operations
    Date
    From: Michal Simek <monstr@monstr.eu>

    Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
    Signed-off-by: Michal Simek <monstr@monstr.eu>
    ---
    include/asm-microblaze/io.h | 208 +++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 208 insertions(+), 0 deletions(-)
    create mode 100644 include/asm-microblaze/io.h

    diff --git a/include/asm-microblaze/io.h b/include/asm-microblaze/io.h
    new file mode 100644
    index 0000000..cb0a178
    --- /dev/null
    +++ b/include/asm-microblaze/io.h
    @@ -0,0 +1,208 @@
    +/*
    + * Copyright (C) 2006 Atmark Techno, Inc.
    + *
    + * This file is subject to the terms and conditions of the GNU General Public
    + * License. See the file "COPYING" in the main directory of this archive
    + * for more details.
    + */
    +
    +#ifndef _ASM_MICROBLAZE_IO_H
    +#define _ASM_MICROBLAZE_IO_H
    +
    +#include <asm/byteorder.h>
    +#include <asm/page.h>
    +
    +static inline unsigned char __raw_readb(const volatile void *addr)
    +{
    + return *(volatile unsigned char __force *)addr;
    +}
    +static inline unsigned short __raw_readw(const volatile void *addr)
    +{
    + return *(volatile unsigned short __force *)addr;
    +}
    +static inline unsigned int __raw_readl(const volatile void *addr)
    +{
    + return *(volatile unsigned int __force *)addr;
    +}
    +static inline unsigned long __raw_readq(const volatile void *addr)
    +{
    + return *(volatile unsigned long __force *)addr;
    +}
    +static inline void __raw_writeb(unsigned char v, volatile void *addr)
    +{
    + *(volatile unsigned char __force *)addr = v;
    +}
    +static inline void __raw_writew(unsigned short v, volatile void *addr)
    +{
    + *(volatile unsigned short __force *)addr = v;
    +}
    +static inline void __raw_writel(unsigned int v, volatile void *addr)
    +{
    + *(volatile unsigned int __force *)addr = v;
    +}
    +static inline void __raw_writeq(unsigned long v, volatile void *addr)
    +{
    + *(volatile unsigned long __force *)addr = v;
    +}
    +
    +/*
    + * read (readb, readw, readl, readq) and write (writeb, writew,
    + * writel, writeq) accessors are for PCI and thus littel endian.
    + * Linux 2.4 for Microblaze had this wrong.
    + */
    +static inline unsigned char readb(const volatile void *addr)
    +{
    + return *(volatile unsigned char __force *)addr;
    +}
    +static inline unsigned short readw(const volatile void *addr)
    +{
    + return le16_to_cpu(*(volatile unsigned short __force *)addr);
    +}
    +static inline unsigned int readl(const volatile void *addr)
    +{
    + return le32_to_cpu(*(volatile unsigned int __force *)addr);
    +}
    +static inline void writeb(unsigned char v, volatile void *addr)
    +{
    + *(volatile unsigned char __force *)addr = v;
    +}
    +static inline void writew(unsigned short v, volatile void *addr)
    +{
    + *(volatile unsigned short __force *)addr = cpu_to_le16(v);
    +}
    +static inline void writel(unsigned int v, volatile void __iomem *addr)
    +{
    + *(volatile unsigned int __force *)addr = cpu_to_le32(v);
    +}
    +
    +/* ioread and iowrite variants. thease are for now same as __raw_
    + * variants of accessors. we might check for endianess in the feature
    + */
    +#define ioread8(addr) __raw_readb((u8 *)(addr))
    +#define ioread16(addr) __raw_readw((u16 *)(addr))
    +#define ioread32(addr) __raw_readl((u32 *)(addr))
    +#define iowrite8(v, addr) __raw_writeb((u8)(v), (u8 *)(addr))
    +#define iowrite16(v, addr) __raw_writew((u16)(v), (u16 *)(addr))
    +#define iowrite32(v, addr) __raw_writel((u32)(v), (u32 *)(addr))
    +
    +/* These are the definitions for the x86 IO instructions
    + * inb/inw/inl/outb/outw/outl, the "string" versions
    + * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
    + * inb_p/inw_p/...
    + * The macros don't do byte-swapping.
    + */
    +#define inb(port) readb((u8 *)((port)))
    +#define outb(val, port) writeb((val), (u8 *)((unsigned long)(port)))
    +#define inw(port) readw((u16 *)((port)))
    +#define outw(val, port) writew((val), (u16 *)((unsigned long)(port)))
    +#define inl(port) readl((u32 *)((port)))
    +#define outl(val, port) writel((val), (u32 *)((unsigned long)(port)))
    +
    +#define inb_p(port) inb((port))
    +#define outb_p(val, port) outb((val), (port))
    +#define inw_p(port) inw((port))
    +#define outw_p(val, port) outw((val), (port))
    +#define inl_p(port) inl((port))
    +#define outl_p(val, port) outl((val), (port))
    +
    +#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))
    +
    +/**
    + * 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 __iomem virt_to_phys(volatile void *address)
    +{
    + return __pa((unsigned long)address);
    +}
    +
    +#define virt_to_bus virt_to_phys
    +
    +/**
    + * 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 *)__va(address);
    +}
    +
    +#define bus_to_virt(a) phys_to_virt(a)
    +
    +static inline void *__ioremap(unsigned long address, unsigned long size,
    + unsigned long flags)
    +{
    + return (void *)address;
    +}
    +
    +
    +#define IO_SPACE_LIMIT ~(0UL)
    +
    +#define ioremap(physaddr, size) ((void *)(unsigned long)(physaddr))
    +#define iounmap(addr) ((void)0)
    +#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
    +
    +/*
    + * 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
    +
    +/*
    + * Big Endian
    + */
    +#define out_be32(a, v) __raw_writel((v), (a))
    +#define out_be16(a, v) __raw_writew((v), (a))
    +
    +#define in_be32(a) __raw_readl(a)
    +#define in_be16(a) __raw_readw(a)
    +
    +/*
    + * Little endian
    + */
    +
    +#define out_le32(a, v) __raw_writel(__cpu_to_le32(v), (a));
    +#define out_le16(a, v) __raw_writew(__cpu_to_le16(v), (a))
    +
    +#define in_le32(a) __le32_to_cpu(__raw_readl(a))
    +#define in_le16(a) __le16_to_cpu(__raw_readw(a))
    +
    +/* Byte ops */
    +#define out_8(a, v) __raw_writeb((v), (a))
    +#define in_8(a) __raw_readb(a)
    +
    +/* FIXME */
    +static inline void __iomem *ioport_map(unsigned long port, unsigned int len)
    +{
    + return (void __iomem *) (port);
    +}
    +
    +static inline void ioport_unmap(void __iomem *addr)
    +{
    + /* Nothing to do */
    +}
    +
    +#endif /* _ASM_MICROBLAZE_IO_H */
    --
    1.5.4.GIT


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