21c3015a24
the drivers. * Remove legacy inx/outx support from chipset and replace with macros which call busspace. * Rework pci config accesses to route through the pcib device instead of calling a MD function directly. With these changes it is possible to cleanly support machines which have more than one independantly numbered PCI busses. As a bonus, the new busspace implementation should be measurably faster than the old one.
118 lines
3.2 KiB
C
118 lines
3.2 KiB
C
/*-
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* Copyright (c) 1998 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_BWX_H_
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#define _MACHINE_BWX_H_
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/*
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* Byte/word accesses must be made with particular values for addr<37,38>
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*/
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#define BWX_EV56_INT8 (0L << 37)
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#define BWX_EV56_INT4 (1L << 37)
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#define BWX_EV56_INT2 (2L << 37)
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#define BWX_EV56_INT1 (3L << 37)
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static __inline u_int8_t
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ldbu(vm_offset_t va)
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{
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u_int64_t r;
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__asm__ __volatile__ ("ldbu %0,%1" : "=r"(r) : "m"(*(u_int8_t*)va));
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return r;
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}
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static __inline u_int16_t
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ldwu(vm_offset_t va)
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{
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u_int64_t r;
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__asm__ __volatile__ ("ldwu %0,%1" : "=r"(r) : "m"(*(u_int16_t*)va));
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return r;
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}
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static __inline u_int32_t
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ldl(vm_offset_t va)
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{
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return *(u_int32_t*) va;
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}
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static __inline void
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stb(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stb %1,%0" : "=m"(*(u_int8_t*)va) : "r"(r));
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__asm__ __volatile__ ("mb");
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}
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static __inline void
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stw(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stw %1,%0" : "=m"(*(u_int16_t*)va) : "r"(r));
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__asm__ __volatile__ ("mb");
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}
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static __inline void
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stl(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stl %1,%0" : "=m"(*(u_int32_t*)va) : "r"(r));
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__asm__ __volatile__ ("mb");
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}
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static __inline void
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stb_nb(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stb %1,%0" : "=m"(*(u_int8_t*)va) : "r"(r));
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}
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static __inline void
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stw_nb(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stw %1,%0" : "=m"(*(u_int16_t*)va) : "r"(r));
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}
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static __inline void
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stl_nb(vm_offset_t va, u_int64_t r)
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{
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__asm__ __volatile__ ("stl %1,%0" : "=m"(*(u_int32_t*)va) : "r"(r));
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}
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#ifdef _KERNEL
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/*
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* A kernel object for accessing memory-like spaces (port and
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* memory spaces) using BWX instructions.
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*/
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struct bwx_space {
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struct alpha_busspace_ops *ops;
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u_int64_t base; /* base address of space */
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};
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void bwx_init_space(struct bwx_space *bwx, u_int64_t base);
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#endif /* _KERNEL */
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#endif /* !_MACHINE_BWX_H_ */
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