FreeBSD/Linux Kernel Cross Reference
sys/powerpc/include/pio.h

     /*-
      * SPDX-License-Identifier: BSD-4-Clause
      *
      * Copyright (c) 1997 Per Fogelstrom, Opsycon AB and RTMX Inc, USA.
      * 
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed under OpenBSD by
     *      Per Fogelstrom Opsycon AB for RTMX Inc, North Carolina, USA.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
     * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      $NetBSD: pio.h,v 1.1 1998/05/15 10:15:54 tsubai Exp $
     *      $OpenBSD: pio.h,v 1.1 1997/10/13 10:53:47 pefo Exp $
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_PIO_H_
    #define _MACHINE_PIO_H_
    /*
     * I/O macros.
     */
    
    /*
     * Use sync so that bus space operations cannot sneak out the bottom of
     * mutex-protected sections (mutex release does not guarantee completion of
     * accesses to caching-inhibited memory on some systems)
     */
    #define powerpc_iomb() __asm __volatile("sync" : : : "memory")
    
    static __inline void
    __outb(volatile u_int8_t *a, u_int8_t v)
    {
            *a = v;
            powerpc_iomb();
    }
    
    static __inline void
    __outw(volatile u_int16_t *a, u_int16_t v)
    {
            *a = v;
            powerpc_iomb();
    }
    
    static __inline void
    __outl(volatile u_int32_t *a, u_int32_t v)
    {
            *a = v;
            powerpc_iomb();
    }
    
    static __inline void
    __outll(volatile u_int64_t *a, u_int64_t v)
    {
            *a = v;
            powerpc_iomb();
    }
    
    static __inline void
    __outwrb(volatile u_int16_t *a, u_int16_t v)
    {
            __asm__ volatile("sthbrx %0, 0, %1" :: "r"(v), "r"(a));
            powerpc_iomb();
    }
    
    static __inline void
    __outlrb(volatile u_int32_t *a, u_int32_t v)
    {
            __asm__ volatile("stwbrx %0, 0, %1" :: "r"(v), "r"(a));
            powerpc_iomb();
    }
    
    static __inline u_int8_t
    __inb(volatile u_int8_t *a)
    {
            u_int8_t _v_;
    
            _v_ = *a;
            powerpc_iomb();
           return _v_;
   }
   
   static __inline u_int16_t
   __inw(volatile u_int16_t *a)
   {
           u_int16_t _v_;
   
           _v_ = *a;
           powerpc_iomb();
           return _v_;
   }
   
   static __inline u_int32_t
   __inl(volatile u_int32_t *a)
   {
           u_int32_t _v_;
   
           _v_ = *a;
           powerpc_iomb();
           return _v_;
   }
   
   static __inline u_int64_t
   __inll(volatile u_int64_t *a)
   {
           u_int64_t _v_;
   
           _v_ = *a;
           powerpc_iomb();
           return _v_;
   }
   
   static __inline u_int16_t
   __inwrb(volatile u_int16_t *a)
   {
           u_int16_t _v_;
   
           __asm__ volatile("lhbrx %0, 0, %1" : "=r"(_v_) : "r"(a));
           powerpc_iomb();
           return _v_;
   }
   
   static __inline u_int32_t
   __inlrb(volatile u_int32_t *a)
   {
           u_int32_t _v_;
   
           __asm__ volatile("lwbrx %0, 0, %1" : "=r"(_v_) : "r"(a));
           powerpc_iomb();
           return _v_;
   }
   
   #define outb(a,v)       (__outb((volatile u_int8_t *)(a), v))
   #define out8(a,v)       outb(a,v)
   #define outw(a,v)       (__outw((volatile u_int16_t *)(a), v))
   #define out16(a,v)      outw(a,v)
   #define outl(a,v)       (__outl((volatile u_int32_t *)(a), v))
   #define out32(a,v)      outl(a,v)
   #define outll(a,v)      (__outll((volatile u_int64_t *)(a), v))
   #define out64(a,v)      outll(a,v)
   #define inb(a)          (__inb((volatile u_int8_t *)(a)))
   #define in8(a)          inb(a)
   #define inw(a)          (__inw((volatile u_int16_t *)(a)))
   #define in16(a)         inw(a)
   #define inl(a)          (__inl((volatile u_int32_t *)(a)))
   #define in32(a)         inl(a)
   #define inll(a)         (__inll((volatile u_int64_t *)(a)))
   #define in64(a)         inll(a)
   
   #define out8rb(a,v)     outb(a,v)
   #define outwrb(a,v)     (__outwrb((volatile u_int16_t *)(a), v))
   #define out16rb(a,v)    outwrb(a,v)
   #define outlrb(a,v)     (__outlrb((volatile u_int32_t *)(a), v))
   #define out32rb(a,v)    outlrb(a,v)
   #define in8rb(a)        inb(a)
   #define inwrb(a)        (__inwrb((volatile u_int16_t *)(a)))
   #define in16rb(a)       inwrb(a)
   #define inlrb(a)        (__inlrb((volatile u_int32_t *)(a)))
   #define in32rb(a)       inlrb(a)
   
   static __inline void
   __outsb(volatile u_int8_t *a, const u_int8_t *s, size_t c)
   {
           while (c--)
                   *a = *s++;
           powerpc_iomb();
   }
   
   static __inline void
   __outsw(volatile u_int16_t *a, const u_int16_t *s, size_t c)
   {
           while (c--)
                   *a = *s++;
           powerpc_iomb();
   }
   
   static __inline void
   __outsl(volatile u_int32_t *a, const u_int32_t *s, size_t c)
   {
           while (c--)
                   *a = *s++;
           powerpc_iomb();
   }
   
   static __inline void
   __outsll(volatile u_int64_t *a, const u_int64_t *s, size_t c)
   {
           while (c--)
                   *a = *s++;
           powerpc_iomb();
   }
   
   static __inline void
   __outswrb(volatile u_int16_t *a, const u_int16_t *s, size_t c)
   {
           while (c--)
                   __asm__ volatile("sthbrx %0, 0, %1" :: "r"(*s++), "r"(a));
           powerpc_iomb();
   }
   
   static __inline void
   __outslrb(volatile u_int32_t *a, const u_int32_t *s, size_t c)
   {
           while (c--)
                   __asm__ volatile("stwbrx %0, 0, %1" :: "r"(*s++), "r"(a));
           powerpc_iomb();
   }
   
   static __inline void
   __insb(volatile u_int8_t *a, u_int8_t *d, size_t c)
   {
           while (c--)
                   *d++ = *a;
           powerpc_iomb();
   }
   
   static __inline void
   __insw(volatile u_int16_t *a, u_int16_t *d, size_t c)
   {
           while (c--)
                   *d++ = *a;
           powerpc_iomb();
   }
   
   static __inline void
   __insl(volatile u_int32_t *a, u_int32_t *d, size_t c)
   {
           while (c--)
                   *d++ = *a;
           powerpc_iomb();
   }
   
   static __inline void
   __insll(volatile u_int64_t *a, u_int64_t *d, size_t c)
   {
           while (c--)
                   *d++ = *a;
           powerpc_iomb();
   }
   
   static __inline void
   __inswrb(volatile u_int16_t *a, u_int16_t *d, size_t c)
   {
           while (c--)
                   __asm__ volatile("lhbrx %0, 0, %1" : "=r"(*d++) : "r"(a));
           powerpc_iomb();
   }
   
   static __inline void
   __inslrb(volatile u_int32_t *a, u_int32_t *d, size_t c)
   {
           while (c--)
                   __asm__ volatile("lwbrx %0, 0, %1" : "=r"(*d++) : "r"(a));
           powerpc_iomb();
   }
   
   #define outsb(a,s,c)    (__outsb((volatile u_int8_t *)(a), s, c))
   #define outs8(a,s,c)    outsb(a,s,c)
   #define outsw(a,s,c)    (__outsw((volatile u_int16_t *)(a), s, c))
   #define outs16(a,s,c)   outsw(a,s,c)
   #define outsl(a,s,c)    (__outsl((volatile u_int32_t *)(a), s, c))
   #define outs32(a,s,c)   outsl(a,s,c)
   #define outsll(a,s,c)   (__outsll((volatile u_int64_t *)(a), s, c))
   #define outs64(a,s,c)   outsll(a,s,c)
   #define insb(a,d,c)     (__insb((volatile u_int8_t *)(a), d, c))
   #define ins8(a,d,c)     insb(a,d,c)
   #define insw(a,d,c)     (__insw((volatile u_int16_t *)(a), d, c))
   #define ins16(a,d,c)    insw(a,d,c)
   #define insl(a,d,c)     (__insl((volatile u_int32_t *)(a), d, c))
   #define ins32(a,d,c)    insl(a,d,c)
   #define insll(a,d,c)    (__insll((volatile u_int64_t *)(a), d, c))
   #define ins64(a,d,c)    insll(a,d,c)
   
   #define outs8rb(a,s,c)  outsb(a,s,c)
   #define outswrb(a,s,c)  (__outswrb((volatile u_int16_t *)(a), s, c))
   #define outs16rb(a,s,c) outswrb(a,s,c)
   #define outslrb(a,s,c)  (__outslrb((volatile u_int32_t *)(a), s, c))
   #define outs32rb(a,s,c) outslrb(a,s,c)
   #define ins8rb(a,d,c)   insb(a,d,c)
   #define inswrb(a,d,c)   (__inswrb((volatile u_int16_t *)(a), d, c))
   #define ins16rb(a,d,c)  inswrb(a,d,c)
   #define inslrb(a,d,c)   (__inslrb((volatile u_int32_t *)(a), d, c))
   #define ins32rb(a,d,c)  inslrb(a,d,c)
   
   #endif /*_MACHINE_PIO_H_*/

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