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#ifndef _ASM_IO_H

#define _ASM_IO_H

/* USE_HPPA_IOREMAP IS THE MAGIC FLAG TO ENABLE OR DISABLE REAL IOREMAP() FUNCTIONALITY */

/* FOR 712 or 715 MACHINES THIS SHOULD BE ENABLED,

   NEWER MACHINES STILL HAVE SOME ISSUES IN THE SCSI AND/OR NETWORK DRIVERS AND

   BECAUSE OF THAT I WILL LEAVE IT DISABLED FOR NOW <deller@gmx.de> */

/* WHEN THOSE ISSUES ARE SOLVED, USE_HPPA_IOREMAP WILL GO AWAY */

#define USE_HPPA_IOREMAP 0

#include <linux/config.h>

#include <linux/types.h>

#include <asm/pgtable.h>

#define virt_to_phys(a) ((unsigned long)__pa(a))

#define phys_to_virt(a) __va(a)

#define virt_to_bus virt_to_phys

#define bus_to_virt phys_to_virt

/* Memory mapped IO */

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);

}

/*

 * This one maps high address device memory and turns off caching for that area.

 * it's useful if some control registers are in such an area and write combining

 * or read caching is not desirable:

 */

extern inline void * ioremap_nocache (unsigned long offset, unsigned long size)

{

        return __ioremap(offset, size, _PAGE_NO_CACHE /* _PAGE_PCD */);

}

extern void iounmap(void *addr);

/*

 * __raw_ variants have no defined meaning.  on hppa, it means `i was

 * too lazy to ioremap first'.  kind of like isa_, except that there's

 * no additional base address to add on.

 */

extern __inline__ unsigned char __raw_readb(unsigned long addr)

{

        long flags;

        unsigned char ret;

        __asm__ __volatile__(

        "       rsm     2,%0\n"

        "       ldb,ma  0(%2),%1\n"

        "       mtsm    %0\n"

        : "=&r" (flags), "=r" (ret) : "r" (addr) );

        return ret;

}

extern __inline__ unsigned short __raw_readw(unsigned long addr)

{

        long flags;

        unsigned short ret;

        __asm__ __volatile__(

        "       rsm     2,%0\n"

        "       ldh,ma  0(%2),%1\n"

        "       mtsm    %0\n"

        : "=&r" (flags), "=r" (ret) : "r" (addr) );

        return ret;

}

extern __inline__ unsigned int __raw_readl(unsigned long addr)

{

        u32 ret;

        __asm__ __volatile__(

        "       ldwa,ma 0(%1),%0\n"

        : "=r" (ret) : "r" (addr) );

        return ret;

}

extern __inline__ unsigned long long __raw_readq(unsigned long addr)

{

        unsigned long long ret;

#ifdef __LP64__

        __asm__ __volatile__(

        "       ldda,ma 0(%1),%0\n"

        :  "=r" (ret) : "r" (addr) );

#else

        /* two reads may have side effects.. */

        ret = ((u64) __raw_readl(addr)) << 32;

        ret |= __raw_readl(addr+4);

#endif

        return ret;

}

extern __inline__ void __raw_writeb(unsigned char val, unsigned long addr)

{

        long flags;

        __asm__ __volatile__(

        "       rsm     2,%0\n"

        "       stb,ma  %1,0(%2)\n"

        "       mtsm    %0\n"

        : "=&r" (flags) :  "r" (val), "r" (addr) );

}

extern __inline__ void __raw_writew(unsigned short val, unsigned long addr)

{

        long flags;

        __asm__ __volatile__(

        "       rsm     2,%0\n"

        "       sth,ma  %1,0(%2)\n"

        "       mtsm    %0\n"

        : "=&r" (flags) :  "r" (val), "r" (addr) );

}

extern __inline__ void __raw_writel(unsigned int val, unsigned long addr)

{

        __asm__ __volatile__(

        "       stwa,ma %0,0(%1)\n"

        : :  "r" (val), "r" (addr) );

}

extern __inline__ void __raw_writeq(unsigned long long val, unsigned long addr)

{

#ifdef __LP64__

        __asm__ __volatile__(

        "       stda,ma %0,0(%1)\n"

        : :  "r" (val), "r" (addr) );

#else

        /* two writes may have side effects.. */

        __raw_writel(val >> 32, addr);

        __raw_writel(val, addr+4);

#endif

}

#if USE_HPPA_IOREMAP

#define readb(addr) (*(volatile unsigned char *) (addr))

#define readw(addr) (*(volatile unsigned short *) (addr))

#define readl(addr) (*(volatile unsigned int *) (addr))

#define readq(addr) (*(volatile u64 *) (addr))

#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 writeq(b,addr) (*(volatile u64 *) (addr) = (b))

#else /* !USE_HPPA_IOREMAP */

#define readb(addr) __raw_readb((unsigned long)(addr))

#define readw(addr) le16_to_cpu(__raw_readw((unsigned long)(addr)))

#define readl(addr) le32_to_cpu(__raw_readl((unsigned long)(addr)))

#define readq(addr) le64_to_cpu(__raw_readq((unsigned long)(addr)))

#define writeb(b,addr) __raw_writeb(b,(unsigned long)(addr))

#define writew(b,addr) __raw_writew(cpu_to_le16(b),(unsigned long)(addr))

#define writel(b,addr) __raw_writel(cpu_to_le32(b),(unsigned long)(addr))

#define writeq(b,addr) __raw_writeq(cpu_to_le64(b),(unsigned long)(addr))

#endif /* !USE_HPPA_IOREMAP */

extern void memcpy_fromio(void *dest, unsigned long src, int count);

extern void memcpy_toio(unsigned long dest, const void *src, int count);

extern void memset_io(unsigned long dest, char fill, int count);

/* Support old drivers which don't ioremap.

 * NB this interface is scheduled to disappear in 2.5

 */

#define EISA_BASE 0xfffffffffc000000UL

#define isa_readb(a) readb(EISA_BASE | (a))

#define isa_readw(a) readw(EISA_BASE | (a))

#define isa_readl(a) readl(EISA_BASE | (a))

#define isa_writeb(b,a) writeb((b), EISA_BASE | (a))

#define isa_writew(b,a) writew((b), EISA_BASE | (a))

#define isa_writel(b,a) writel((b), EISA_BASE | (a))

#define isa_memset_io(a,b,c) memset_io(EISA_BASE | (a), (b), (c))

#define isa_memcpy_fromio(a,b,c) memcpy_fromio((a), EISA_BASE | (b), (c))

#define isa_memcpy_toio(a,b,c) memcpy_toio(EISA_BASE | (a), (b), (c))

/*

 * XXX - We don't have csum_partial_copy_fromio() yet, so we cheat here and

 * just copy it. The net code will then do the checksum later. Presently

 * only used by some shared memory 8390 Ethernet cards anyway.

 */

#define eth_io_copy_and_sum(skb,src,len,unused) \

  memcpy_fromio((skb)->data,(src),(len))

#define isa_eth_io_copy_and_sum(skb,src,len,unused) \

  isa_memcpy_fromio((skb)->data,(src),(len))

/* Port-space IO */

#define inb_p inb

#define inw_p inw

#define inl_p inl

#define outb_p outb

#define outw_p outw

#define outl_p outl

extern unsigned char eisa_in8(unsigned short port);

extern unsigned short eisa_in16(unsigned short port);

extern unsigned int eisa_in32(unsigned short port);

extern void eisa_out8(unsigned char data, unsigned short port);

extern void eisa_out16(unsigned short data, unsigned short port);

extern void eisa_out32(unsigned int data, unsigned short port);

#if defined(CONFIG_PCI)

extern unsigned char inb(int addr);

extern unsigned short inw(int addr);

extern unsigned int inl(int addr);

extern void outb(unsigned char b, int addr);

extern void outw(unsigned short b, int addr);

extern void outl(unsigned int b, int addr);

#elif defined(CONFIG_EISA)

#define inb eisa_in8

#define inw eisa_in16

#define inl eisa_in32

#define outb eisa_out8

#define outw eisa_out16

#define outl eisa_out32

#else

static inline char inb(unsigned long addr)

{

        BUG();

        return -1;

}

static inline short inw(unsigned long addr)

{

        BUG();

        return -1;

}

static inline int inl(unsigned long addr)

{

        BUG();

        return -1;

}

#define outb(x, y)      BUG()

#define outw(x, y)      BUG()

#define outl(x, y)      BUG()

#endif

/*

 * String versions of in/out ops:

 */

extern void insb (unsigned long port, void *dst, unsigned long count);

extern void insw (unsigned long port, void *dst, unsigned long count);

extern void insl (unsigned long port, void *dst, unsigned long count);

extern void outsb (unsigned long port, const void *src, unsigned long count);

extern void outsw (unsigned long port, const void *src, unsigned long count);

extern void outsl (unsigned long port, const void *src, unsigned long count);

/* IO Port space is :      BBiiii   where BB is HBA number. */

#define IO_SPACE_LIMIT 0x00ffffff

#define dma_cache_inv(_start,_size)             do { flush_kernel_dcache_range(_start,_size); } while(0)

#define dma_cache_wback(_start,_size)           do { flush_kernel_dcache_range(_start,_size); } while (0)

#define dma_cache_wback_inv(_start,_size)       do { flush_kernel_dcache_range(_start,_size); } while (0)

#endif