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mirror of https://git.FreeBSD.org/src.git synced 2024-12-05 09:14:03 +00:00

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
This commit is contained in:
Jim Harris 2012-12-06 22:33:31 +00:00
parent bf5a1b6502
commit 71a30c4436
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=243960
3 changed files with 171 additions and 40 deletions

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@ -1,6 +1,153 @@
/*-
* This file is in the public domain.
* Copyright (c) 2012 Intel Corporation
* Copyright (c) 2009 Marcel Moolenaar
* 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.
*
* $FreeBSD$
*/
/* $FreeBSD$ */
#ifndef _MACHINE_BUS_H_
#define _MACHINE_BUS_H_
#include <sys/systm.h>
#include <x86/bus.h>
#define KASSERT_BUS_SPACE_MEM_ONLY(tag) \
KASSERT((tag) == X86_BUS_SPACE_MEM, \
("%s: can only handle mem space", __func__))
static __inline uint64_t
bus_space_read_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs)
{
KASSERT_BUS_SPACE_MEM_ONLY(tag);
return (*(volatile uint64_t *)(bsh + ofs));
}
static __inline void
bus_space_write_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t val)
{
KASSERT_BUS_SPACE_MEM_ONLY(tag);
*(volatile uint64_t *)(bsh + ofs) = val;
}
static __inline void
bus_space_read_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t *bufp, size_t count)
{
volatile uint64_t *bsp;
KASSERT_BUS_SPACE_MEM_ONLY(tag);
bsp = (void *)(bsh + ofs);
while (count-- > 0)
*bufp++ = *bsp++;
}
static __inline void
bus_space_write_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t const *bufp, size_t count)
{
volatile uint64_t *bsp;
KASSERT_BUS_SPACE_MEM_ONLY(tag);
bsp = (void *)(bsh + ofs);
while (count-- > 0)
*bsp++ = *bufp++;
}
static __inline void
bus_space_set_region_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t val, size_t count)
{
volatile uint64_t *bsp;
KASSERT_BUS_SPACE_MEM_ONLY(tag);
bsp = (void *)(bsh + ofs);
while (count-- > 0)
*bsp++ = val;
}
static __inline void
bus_space_copy_region_8(bus_space_tag_t tag, bus_space_handle_t sbsh,
bus_size_t sofs, bus_space_handle_t dbsh, bus_size_t dofs, size_t count)
{
volatile uint64_t *dst, *src;
KASSERT_BUS_SPACE_MEM_ONLY(tag);
src = (void *)(sbsh + sofs);
dst = (void *)(dbsh + dofs);
if (src < dst) {
src += count - 1;
dst += count - 1;
while (count-- > 0)
*dst-- = *src--;
} else {
while (count-- > 0)
*dst++ = *src++;
}
}
static __inline void
bus_space_read_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t *bufp, size_t count)
{
KASSERT_BUS_SPACE_MEM_ONLY(tag);
while (count-- > 0)
*bufp++ = *(volatile uint64_t *)(bsh + ofs);
}
static __inline void
bus_space_write_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t const *bufp, size_t count)
{
KASSERT_BUS_SPACE_MEM_ONLY(tag);
while (count-- > 0)
*(volatile uint64_t *)(bsh + ofs) = *bufp++;
}
static __inline void
bus_space_set_multi_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t ofs, uint64_t val, size_t count)
{
KASSERT_BUS_SPACE_MEM_ONLY(tag);
while (count-- > 0)
*(volatile uint64_t *)(bsh + ofs) = val;
}
#endif /*_MACHINE_BUS_H_*/

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@ -3,4 +3,26 @@
*/
/* $FreeBSD$ */
#ifndef _MACHINE_BUS_H_
#define _MACHINE_BUS_H_
#include <x86/bus.h>
/*
* The functions:
* bus_space_read_8
* bus_space_read_region_8
* bus_space_write_8
* bus_space_write_multi_8
* bus_space_write_region_8
* bus_space_set_multi_8
* bus_space_set_region_8
* bus_space_copy_region_8
* bus_space_read_multi_8
* are unimplemented for i386 because there is no way to do a 64-bit move in
* this architecture. It is possible to do two 32-bit moves, but this is
* not atomic and may have hardware dependencies that should be fully
* understood.
*/
#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,
return (*(volatile u_int32_t *)(handle + offset));
}
#if 0 /* Cause a link error for bus_space_read_8 */
#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
#endif
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
@ -337,10 +333,6 @@ bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
#if 0 /* Cause a link error for bus_space_read_multi_8 */
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
#endif
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle and starting at `offset' and copy into
@ -458,10 +450,6 @@ bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
#if 0 /* Cause a link error for bus_space_read_region_8 */
#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
#endif
/*
* Write the 1, 2, 4, or 8 byte value `value' to bus space
* described by tag/handle/offset.
@ -512,10 +500,6 @@ bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(bsh + offset) = value;
}
#if 0 /* Cause a link error for bus_space_write_8 */
#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
#endif
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
@ -601,11 +585,6 @@ bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
#if 0 /* Cause a link error for bus_space_write_multi_8 */
#define bus_space_write_multi_8(t, h, o, a, c) \
!!! bus_space_write_multi_8 unimplemented !!!
#endif
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer provided
* to bus space described by tag/handle starting at `offset'.
@ -723,11 +702,6 @@ bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
}
}
#if 0 /* Cause a link error for bus_space_write_region_8 */
#define bus_space_write_region_8 \
!!! bus_space_write_region_8 unimplemented !!!
#endif
/*
* Write the 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle/offset `count' times.
@ -788,10 +762,6 @@ bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(addr) = value;
}
#if 0 /* Cause a link error for bus_space_set_multi_8 */
#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
#endif
/*
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
* by tag/handle starting at `offset'.
@ -852,10 +822,6 @@ bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
*(volatile u_int32_t *)(addr) = value;
}
#if 0 /* Cause a link error for bus_space_set_region_8 */
#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
#endif
/*
* Copy `count' 1, 2, 4, or 8 byte values from bus space starting
* at tag/bsh1/off1 to bus space starting at tag/bsh2/off2.
@ -984,10 +950,6 @@ bus_space_copy_region_4(bus_space_tag_t tag, bus_space_handle_t bsh1,
}
}
#if 0 /* Cause a link error for bus_space_copy_8 */
#define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!!
#endif
/*
* Bus read/write barrier methods.
*