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/*-
* Copyright (c) 1998 Doug Rabson
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_BWX_H_
#define _MACHINE_BWX_H_
/*
* Byte/word accesses must be made with particular values for addr<37,38>
*/
#define BWX_EV56_INT8 (0L << 37)
#define BWX_EV56_INT4 (1L << 37)
#define BWX_EV56_INT2 (2L << 37)
#define BWX_EV56_INT1 (3L << 37)
static __inline u_int8_t
ldbu(vm_offset_t va)
{
u_int64_t r;
__asm__ __volatile__ ("ldbu %0,%1" : "=r"(r) : "m"(*(u_int8_t*)va));
return r;
}
static __inline u_int16_t
ldwu(vm_offset_t va)
{
u_int64_t r;
__asm__ __volatile__ ("ldwu %0,%1" : "=r"(r) : "m"(*(u_int16_t*)va));
return r;
}
static __inline u_int32_t
ldl(vm_offset_t va)
{
return *(u_int32_t*) va;
}
static __inline void
stb(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stb %1,%0" : "=m"(*(u_int8_t*)va) : "r"(r));
__asm__ __volatile__ ("mb");
}
static __inline void
stw(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stw %1,%0" : "=m"(*(u_int16_t*)va) : "r"(r));
__asm__ __volatile__ ("mb");
}
static __inline void
stl(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stl %1,%0" : "=m"(*(u_int32_t*)va) : "r"(r));
__asm__ __volatile__ ("mb");
}
static __inline void
stb_nb(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stb %1,%0" : "=m"(*(u_int8_t*)va) : "r"(r));
}
static __inline void
stw_nb(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stw %1,%0" : "=m"(*(u_int16_t*)va) : "r"(r));
}
static __inline void
stl_nb(vm_offset_t va, u_int64_t r)
{
__asm__ __volatile__ ("stl %1,%0" : "=m"(*(u_int32_t*)va) : "r"(r));
}
#ifdef _KERNEL
/*
* A kernel object for accessing memory-like spaces (port and
* memory spaces) using BWX instructions.
*/
struct bwx_space {
struct alpha_busspace_ops *ops;
u_int64_t base; /* base address of space */
};
void bwx_init_space(struct bwx_space *bwx, u_int64_t base);
#endif /* _KERNEL */
#endif /* !_MACHINE_BWX_H_ */
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