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Add amd64 implementations for 8-byte bus_space routines.
Submitted by: Carl Delsey <carl.r.delsey@intel.com> Discussed with: jhb, rwatson Reviewed by: jimharris MFC after: 1 week
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Jim Harris
parent
bf5a1b6502
commit
71a30c4436
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=243960
@ -1,6 +1,153 @@
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/*-
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* This file is in the public domain.
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* Copyright (c) 2012 Intel Corporation
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* Copyright (c) 2009 Marcel Moolenaar
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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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/* $FreeBSD$ */
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#ifndef _MACHINE_BUS_H_
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#define _MACHINE_BUS_H_
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#include <sys/systm.h>
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#include <x86/bus.h>
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#define KASSERT_BUS_SPACE_MEM_ONLY(tag) \
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KASSERT((tag) == X86_BUS_SPACE_MEM, \
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("%s: can only handle mem space", __func__))
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static __inline uint64_t
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bus_space_read_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs)
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{
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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return (*(volatile uint64_t *)(bsh + ofs));
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}
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static __inline void
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bus_space_write_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t val)
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{
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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*(volatile uint64_t *)(bsh + ofs) = val;
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}
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static __inline void
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bus_space_read_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t *bufp, size_t count)
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{
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volatile uint64_t *bsp;
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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bsp = (void *)(bsh + ofs);
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while (count-- > 0)
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*bufp++ = *bsp++;
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}
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static __inline void
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bus_space_write_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t const *bufp, size_t count)
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{
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volatile uint64_t *bsp;
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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bsp = (void *)(bsh + ofs);
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while (count-- > 0)
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*bsp++ = *bufp++;
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}
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static __inline void
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bus_space_set_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t val, size_t count)
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{
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volatile uint64_t *bsp;
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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bsp = (void *)(bsh + ofs);
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while (count-- > 0)
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*bsp++ = val;
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}
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static __inline void
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bus_space_copy_region_8(bus_space_tag_t tag, bus_space_handle_t sbsh,
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bus_size_t sofs, bus_space_handle_t dbsh, bus_size_t dofs, size_t count)
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{
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volatile uint64_t *dst, *src;
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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src = (void *)(sbsh + sofs);
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dst = (void *)(dbsh + dofs);
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if (src < dst) {
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src += count - 1;
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dst += count - 1;
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while (count-- > 0)
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*dst-- = *src--;
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} else {
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while (count-- > 0)
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*dst++ = *src++;
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}
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}
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static __inline void
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bus_space_read_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t *bufp, size_t count)
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{
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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while (count-- > 0)
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*bufp++ = *(volatile uint64_t *)(bsh + ofs);
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}
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static __inline void
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bus_space_write_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t const *bufp, size_t count)
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{
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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while (count-- > 0)
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*(volatile uint64_t *)(bsh + ofs) = *bufp++;
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}
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static __inline void
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bus_space_set_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
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bus_size_t ofs, uint64_t val, size_t count)
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{
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KASSERT_BUS_SPACE_MEM_ONLY(tag);
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while (count-- > 0)
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*(volatile uint64_t *)(bsh + ofs) = val;
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}
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#endif /*_MACHINE_BUS_H_*/
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@ -3,4 +3,26 @@
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*/
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/* $FreeBSD$ */
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#ifndef _MACHINE_BUS_H_
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#define _MACHINE_BUS_H_
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#include <x86/bus.h>
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/*
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* The functions:
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* bus_space_read_8
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* bus_space_read_region_8
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* bus_space_write_8
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* bus_space_write_multi_8
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* bus_space_write_region_8
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* bus_space_set_multi_8
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* bus_space_set_region_8
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* bus_space_copy_region_8
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* bus_space_read_multi_8
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* are unimplemented for i386 because there is no way to do a 64-bit move in
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* this architecture. It is possible to do two 32-bit moves, but this is
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* not atomic and may have hardware dependencies that should be fully
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* understood.
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*/
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#endif /*_MACHINE_BUS_H_*/
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@ -251,10 +251,6 @@ bus_space_read_4(bus_space_tag_t tag, bus_space_handle_t handle,
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return (*(volatile u_int32_t *)(handle + offset));
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}
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#if 0 /* Cause a link error for bus_space_read_8 */
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#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
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#endif
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/*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle/offset and copy into buffer provided.
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@ -337,10 +333,6 @@ bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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}
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}
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#if 0 /* Cause a link error for bus_space_read_multi_8 */
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#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
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#endif
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/*
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* Read `count' 1, 2, 4, or 8 byte quantities from bus space
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* described by tag/handle and starting at `offset' and copy into
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@ -458,10 +450,6 @@ bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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}
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}
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#if 0 /* Cause a link error for bus_space_read_region_8 */
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#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
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#endif
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/*
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* Write the 1, 2, 4, or 8 byte value `value' to bus space
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* described by tag/handle/offset.
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@ -512,10 +500,6 @@ bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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*(volatile u_int32_t *)(bsh + offset) = value;
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}
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#if 0 /* Cause a link error for bus_space_write_8 */
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#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
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#endif
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/*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
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* provided to bus space described by tag/handle/offset.
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@ -601,11 +585,6 @@ bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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}
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}
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#if 0 /* Cause a link error for bus_space_write_multi_8 */
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#define bus_space_write_multi_8(t, h, o, a, c) \
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!!! bus_space_write_multi_8 unimplemented !!!
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#endif
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/*
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* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
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* to bus space described by tag/handle starting at `offset'.
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@ -723,11 +702,6 @@ bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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}
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}
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#if 0 /* Cause a link error for bus_space_write_region_8 */
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#define bus_space_write_region_8 \
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!!! bus_space_write_region_8 unimplemented !!!
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#endif
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/*
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* Write the 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle/offset `count' times.
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@ -788,10 +762,6 @@ bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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*(volatile u_int32_t *)(addr) = value;
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}
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#if 0 /* Cause a link error for bus_space_set_multi_8 */
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#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
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#endif
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/*
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* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
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* by tag/handle starting at `offset'.
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@ -852,10 +822,6 @@ bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
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*(volatile u_int32_t *)(addr) = value;
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}
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#if 0 /* Cause a link error for bus_space_set_region_8 */
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#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
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#endif
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/*
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* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
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* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
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@ -984,10 +950,6 @@ bus_space_copy_region_4(bus_space_tag_t tag, bus_space_handle_t bsh1,
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}
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}
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#if 0 /* Cause a link error for bus_space_copy_8 */
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#define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!!
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#endif
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/*
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* Bus read/write barrier methods.
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*
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