/* $NetBSD: pio.h,v 1.7.52.1 2020/02/25 20:22:14 martin Exp $ */
/* $OpenBSD: pio.h,v 1.1 1997/10/13 10:53:47 pefo Exp $ */
/*
* 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.
*
*/
#ifndef _POWERPC_PIO_H_
#define _POWERPC_PIO_H_
/*
* I/O macros.
*/
#if defined(PPC_IBM4XX) && !defined(PPC_IBM440)
/* eieio is implemented as sync */
#define IO_BARRIER() __asm volatile("sync")
#else
#define IO_BARRIER() __asm volatile("eieio; sync")
#endif
static __inline void __outb(volatile uint8_t *a, uint8_t v);
static __inline void __outw(volatile uint16_t *a, uint16_t v);
static __inline void __outl(volatile uint32_t *a, uint32_t v);
static __inline void __outwrb(volatile uint16_t *a, uint16_t v);
static __inline void __outlrb(volatile uint32_t *a, uint32_t v);
static __inline uint8_t __inb(volatile uint8_t *a);
static __inline uint16_t __inw(volatile uint16_t *a);
static __inline uint32_t __inl(volatile uint32_t *a);
static __inline uint16_t __inwrb(volatile uint16_t *a);
static __inline uint32_t __inlrb(volatile uint32_t *a);
static __inline void __outsb(volatile uint8_t *, const uint8_t *, size_t);
static __inline void __outsw(volatile uint16_t *, const uint16_t *, size_t);
static __inline void __outsl(volatile uint32_t *, const uint32_t *, size_t);
static __inline void __outswrb(volatile uint16_t *, const uint16_t *, size_t);
static __inline void __outslrb(volatile uint32_t *, const uint32_t *, size_t);
static __inline void __insb(volatile uint8_t *, uint8_t *, size_t);
static __inline void __insw(volatile uint16_t *, uint16_t *, size_t);
static __inline void __insl(volatile uint32_t *, uint32_t *, size_t);
static __inline void __inswrb(volatile uint16_t *, uint16_t *, size_t);
static __inline void __inslrb(volatile uint32_t *, uint32_t *, size_t);
static __inline void
__outb(volatile uint8_t *a, uint8_t v)
{
*a = v;
IO_BARRIER();
}
static __inline void
__outw(volatile uint16_t *a, uint16_t v)
{
*a = v;
IO_BARRIER();
}
static __inline void
__outl(volatile uint32_t *a, uint32_t v)
{
*a = v;
IO_BARRIER();
}
static __inline void
__outwrb(volatile uint16_t *a, uint16_t v)
{
__asm volatile("sthbrx %0, 0, %1" :: "r"(v), "r"(a));
IO_BARRIER();
}
static __inline void
__outlrb(volatile uint32_t *a, uint32_t v)
{
__asm volatile("stwbrx %0, 0, %1" :: "r"(v), "r"(a));
IO_BARRIER();
}
static __inline uint8_t
__inb(volatile uint8_t *a)
{
uint8_t _v_;
_v_ = *a;
IO_BARRIER();
return _v_;
}
static __inline uint16_t
__inw(volatile uint16_t *a)
{
uint16_t _v_;
_v_ = *a;
IO_BARRIER();
return _v_;
}
static __inline uint32_t
__inl(volatile uint32_t *a)
{
uint32_t _v_;
_v_ = *a;
IO_BARRIER();
return _v_;
}
static __inline uint16_t
__inwrb(volatile uint16_t *a)
{
uint16_t _v_;
__asm volatile("lhbrx %0, 0, %1" : "=r"(_v_) : "r"(a));
IO_BARRIER();
return _v_;
}
static __inline uint32_t
__inlrb(volatile uint32_t *a)
{
uint32_t _v_;
__asm volatile("lwbrx %0, 0, %1" : "=r"(_v_) : "r"(a));
IO_BARRIER();
return _v_;
}
#define outb(a,v) (__outb((volatile uint8_t *)(a), v))
#define out8(a,v) outb(a,v)
#define outw(a,v) (__outw((volatile uint16_t *)(a), v))
#define out16(a,v) outw(a,v)
#define outl(a,v) (__outl((volatile uint32_t *)(a), v))
#define out32(a,v) outl(a,v)
#define inb(a) (__inb((volatile uint8_t *)(a)))
#define in8(a) inb(a)
#define inw(a) (__inw((volatile uint16_t *)(a)))
#define in16(a) inw(a)
#define inl(a) (__inl((volatile uint32_t *)(a)))
#define in32(a) inl(a)
#define out8rb(a,v) outb(a,v)
#define outwrb(a,v) (__outwrb((volatile uint16_t *)(a), v))
#define out16rb(a,v) outwrb(a,v)
#define outlrb(a,v) (__outlrb((volatile uint32_t *)(a), v))
#define out32rb(a,v) outlrb(a,v)
#define in8rb(a) inb(a)
#define inwrb(a) (__inwrb((volatile uint16_t *)(a)))
#define in16rb(a) inwrb(a)
#define inlrb(a) (__inlrb((volatile uint32_t *)(a)))
#define in32rb(a) inlrb(a)
static __inline void
__outsb(volatile uint8_t *a, const uint8_t *s, size_t c)
{
while (c--)
*a = *s++;
IO_BARRIER();
}
static __inline void
__outsw(volatile uint16_t *a, const uint16_t *s, size_t c)
{
while (c--)
*a = *s++;
IO_BARRIER();
}
static __inline void
__outsl(volatile uint32_t *a, const uint32_t *s, size_t c)
{
while (c--)
*a = *s++;
IO_BARRIER();
}
static __inline void
__outswrb(volatile uint16_t *a, const uint16_t *s, size_t c)
{
while (c--)
__asm volatile("sthbrx %0, 0, %1" :: "r"(*s++), "r"(a));
IO_BARRIER();
}
static __inline void
__outslrb(volatile uint32_t *a, const uint32_t *s, size_t c)
{
while (c--)
__asm volatile("stwbrx %0, 0, %1" :: "r"(*s++), "r"(a));
IO_BARRIER();
}
static __inline void
__insb(volatile uint8_t *a, uint8_t *d, size_t c)
{
while (c--)
*d++ = *a;
IO_BARRIER();
}
static __inline void
__insw(volatile uint16_t *a, uint16_t *d, size_t c)
{
while (c--)
*d++ = *a;
IO_BARRIER();
}
static __inline void
__insl(volatile uint32_t *a, uint32_t *d, size_t c)
{
while (c--)
*d++ = *a;
IO_BARRIER();
}
static __inline void
__inswrb(volatile uint16_t *a, uint16_t *d, size_t c)
{
while (c--)
__asm volatile("lhbrx %0, 0, %1" : "=r"(*d++) : "r"(a));
IO_BARRIER();
}
static __inline void
__inslrb(volatile uint32_t *a, uint32_t *d, size_t c)
{
while (c--)
__asm volatile("lwbrx %0, 0, %1" : "=r"(*d++) : "r"(a));
IO_BARRIER();
}
#define outsb(a,s,c) (__outsb((volatile uint8_t *)(a), s, c))
#define outs8(a,s,c) outsb(a,s,c)
#define outsw(a,s,c) (__outsw((volatile uint16_t *)(a), s, c))
#define outs16(a,s,c) outsw(a,s,c)
#define outsl(a,s,c) (__outsl((volatile uint32_t *)(a), s, c))
#define outs32(a,s,c) outsl(a,s,c)
#define insb(a,d,c) (__insb((volatile uint8_t *)(a), d, c))
#define ins8(a,d,c) insb(a,d,c)
#define insw(a,d,c) (__insw((volatile uint16_t *)(a), d, c))
#define ins16(a,d,c) insw(a,d,c)
#define insl(a,d,c) (__insl((volatile uint32_t *)(a), d, c))
#define ins32(a,d,c) insl(a,d,c)
#define outs8rb(a,s,c) outsb(a,s,c)
#define outswrb(a,s,c) (__outswrb((volatile uint16_t *)(a), s, c))
#define outs16rb(a,s,c) outswrb(a,s,c)
#define outslrb(a,s,c) (__outslrb((volatile uint32_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 uint16_t *)(a), d, c))
#define ins16rb(a,d,c) inswrb(a,d,c)
#define inslrb(a,d,c) (__inslrb((volatile uint32_t *)(a), d, c))
#define ins32rb(a,d,c) inslrb(a,d,c)
#undef IO_BARRIER
#endif /*_POWERPC_PIO_H_*/