/
bus.h
1082 lines (951 loc) · 32.7 KB
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bus.h
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/*-
* SPDX-License-Identifier: BSD-3-Clause AND BSD-2-ClauseE
*
* Copyright (c) KATO Takenori, 1999.
*
* All rights reserved. Unpublished rights reserved under the copyright
* laws of Japan.
*
* 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 as
* the first lines of this file unmodified.
* 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. 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.
*/
/* $NetBSD: bus.h,v 1.12 1997/10/01 08:25:15 fvdl Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*-
* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
* Copyright (c) 1996 Christopher G. Demetriou. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 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 _MACHINE_BUS_H_
#define _MACHINE_BUS_H_
#include <machine/_bus.h>
#include <machine/cpufunc.h>
#include <machine/bus_dma.h>
/*
* Values for the x86 bus space tag, not to be used directly by MI code.
*/
#define X86_BUS_SPACE_IO 0 /* space is i/o space */
#define X86_BUS_SPACE_MEM 1 /* space is mem space */
#define BUS_SPACE_MAXSIZE_24BIT 0xFFFFFF
#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
#if defined(__amd64__)
#define BUS_SPACE_MAXSIZE 0xFFFFFFFFFFFFFFFFULL
#else
#define BUS_SPACE_MAXSIZE 0xFFFFFFFF
#endif
#define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF
#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
#if defined(__amd64__) || defined(PAE)
#define BUS_SPACE_MAXADDR_48BIT 0xFFFFFFFFFFFFULL
#define BUS_SPACE_MAXADDR 0xFFFFFFFFFFFFFFFFULL
#else
#define BUS_SPACE_MAXADDR 0xFFFFFFFF
#endif
#define BUS_SPACE_INVALID_DATA (~0)
#define BUS_SPACE_UNRESTRICTED (~0)
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
#if defined(SAN_NEEDS_INTERCEPTORS) && !defined(SAN_RUNTIME)
#include <sys/bus_san.h>
#else
/*
* Map a region of device bus space into CPU virtual address space.
*/
int bus_space_map(bus_space_tag_t tag, bus_addr_t addr, bus_size_t size,
int flags, bus_space_handle_t *bshp);
/*
* Unmap a region of device bus space.
*/
void bus_space_unmap(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t size);
/*
* Get a new handle for a subregion of an already-mapped area of bus space.
*/
static __inline int bus_space_subregion(bus_space_tag_t t,
bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size,
bus_space_handle_t *nbshp);
static __inline int
bus_space_subregion(bus_space_tag_t t __unused, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size __unused,
bus_space_handle_t *nbshp)
{
*nbshp = bsh + offset;
return (0);
}
/*
* Allocate a region of memory that is accessible to devices in bus space.
*/
int bus_space_alloc(bus_space_tag_t t, bus_addr_t rstart,
bus_addr_t rend, bus_size_t size, bus_size_t align,
bus_size_t boundary, int flags, bus_addr_t *addrp,
bus_space_handle_t *bshp);
/*
* Free a region of bus space accessible memory.
*/
static __inline void bus_space_free(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t size);
static __inline void
bus_space_free(bus_space_tag_t t __unused, bus_space_handle_t bsh __unused,
bus_size_t size __unused)
{
}
/*
* Read a 1, 2, 4, or 8 byte quantity from bus space
* described by tag/handle/offset.
*/
static __inline u_int8_t bus_space_read_1(bus_space_tag_t tag,
bus_space_handle_t handle,
bus_size_t offset);
static __inline u_int16_t bus_space_read_2(bus_space_tag_t tag,
bus_space_handle_t handle,
bus_size_t offset);
static __inline u_int32_t bus_space_read_4(bus_space_tag_t tag,
bus_space_handle_t handle,
bus_size_t offset);
#ifdef __amd64__
static __inline uint64_t bus_space_read_8(bus_space_tag_t tag,
bus_space_handle_t handle,
bus_size_t offset);
#endif
static __inline u_int8_t
bus_space_read_1(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t offset)
{
if (tag == X86_BUS_SPACE_IO)
return (inb(handle + offset));
return (*(volatile u_int8_t *)(handle + offset));
}
static __inline u_int16_t
bus_space_read_2(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t offset)
{
if (tag == X86_BUS_SPACE_IO)
return (inw(handle + offset));
return (*(volatile u_int16_t *)(handle + offset));
}
static __inline u_int32_t
bus_space_read_4(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t offset)
{
if (tag == X86_BUS_SPACE_IO)
return (inl(handle + offset));
return (*(volatile u_int32_t *)(handle + offset));
}
#ifdef __amd64__
static __inline uint64_t
bus_space_read_8(bus_space_tag_t tag, bus_space_handle_t handle,
bus_size_t offset)
{
if (tag == X86_BUS_SPACE_IO) /* No 8 byte IO space access on x86 */
return (BUS_SPACE_INVALID_DATA);
return (*(volatile uint64_t *)(handle + offset));
}
#endif
/*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
*/
static __inline void bus_space_read_multi_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int8_t *addr,
size_t count);
static __inline void bus_space_read_multi_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int16_t *addr,
size_t count);
static __inline void bus_space_read_multi_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int32_t *addr,
size_t count);
static __inline void
bus_space_read_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
insb(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: movb (%2),%%al \n\
stosb \n\
loop 1b" :
"=D" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory");
}
}
static __inline void
bus_space_read_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
insw(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: movw (%2),%%ax \n\
stosw \n\
loop 1b" :
"=D" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory");
}
}
static __inline void
bus_space_read_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int32_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
insl(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: movl (%2),%%eax \n\
stosl \n\
loop 1b" :
"=D" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory");
}
}
#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
* buffer provided.
*/
static __inline void bus_space_read_region_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int8_t *addr,
size_t count);
static __inline void bus_space_read_region_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int16_t *addr,
size_t count);
static __inline void bus_space_read_region_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int32_t *addr,
size_t count);
static __inline void
bus_space_read_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: inb %w2,%%al \n\
stosb \n\
incl %2 \n\
loop 1b" :
"=D" (addr), "=c" (count), "=d" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsb" :
"=D" (addr), "=c" (count), "=S" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"memory", "cc");
}
}
static __inline void
bus_space_read_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: inw %w2,%%ax \n\
stosw \n\
addl $2,%2 \n\
loop 1b" :
"=D" (addr), "=c" (count), "=d" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsw" :
"=D" (addr), "=c" (count), "=S" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"memory", "cc");
}
}
static __inline void
bus_space_read_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int32_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: inl %w2,%%eax \n\
stosl \n\
addl $4,%2 \n\
loop 1b" :
"=D" (addr), "=c" (count), "=d" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsl" :
"=D" (addr), "=c" (count), "=S" (_port_) :
"0" (addr), "1" (count), "2" (_port_) :
"memory", "cc");
}
}
#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.
*/
static __inline void bus_space_write_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value);
static __inline void bus_space_write_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value);
static __inline void bus_space_write_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int32_t value);
#ifdef __amd64__
static __inline void bus_space_write_8(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, uint64_t value);
#endif
static __inline void
bus_space_write_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value)
{
if (tag == X86_BUS_SPACE_IO)
outb(bsh + offset, value);
else
*(volatile u_int8_t *)(bsh + offset) = value;
}
static __inline void
bus_space_write_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value)
{
if (tag == X86_BUS_SPACE_IO)
outw(bsh + offset, value);
else
*(volatile u_int16_t *)(bsh + offset) = value;
}
static __inline void
bus_space_write_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int32_t value)
{
if (tag == X86_BUS_SPACE_IO)
outl(bsh + offset, value);
else
*(volatile u_int32_t *)(bsh + offset) = value;
}
#ifdef __amd64__
static __inline void
bus_space_write_8(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, uint64_t value)
{
if (tag == X86_BUS_SPACE_IO) /* No 8 byte IO space access on x86 */
return;
else
*(volatile uint64_t *)(bsh + offset) = value;
}
#endif
/*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
*/
static __inline void bus_space_write_multi_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int8_t *addr,
size_t count);
static __inline void bus_space_write_multi_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int16_t *addr,
size_t count);
static __inline void bus_space_write_multi_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int32_t *addr,
size_t count);
static __inline void
bus_space_write_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int8_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
outsb(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: lodsb \n\
movb %%al,(%2) \n\
loop 1b" :
"=S" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory", "cc");
}
}
static __inline void
bus_space_write_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int16_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
outsw(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: lodsw \n\
movw %%ax,(%2) \n\
loop 1b" :
"=S" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory", "cc");
}
}
static __inline void
bus_space_write_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int32_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO)
outsl(bsh + offset, addr, count);
else {
__asm __volatile(" \n\
1: lodsl \n\
movl %%eax,(%2) \n\
loop 1b" :
"=S" (addr), "=c" (count) :
"r" (bsh + offset), "0" (addr), "1" (count) :
"%eax", "memory", "cc");
}
}
#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'.
*/
static __inline void bus_space_write_region_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int8_t *addr,
size_t count);
static __inline void bus_space_write_region_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int16_t *addr,
size_t count);
static __inline void bus_space_write_region_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
const u_int32_t *addr,
size_t count);
static __inline void
bus_space_write_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int8_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: lodsb \n\
outb %%al,%w0 \n\
incl %0 \n\
loop 1b" :
"=d" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsb" :
"=D" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"memory", "cc");
}
}
static __inline void
bus_space_write_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int16_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: lodsw \n\
outw %%ax,%w0 \n\
addl $2,%0 \n\
loop 1b" :
"=d" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsw" :
"=D" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"memory", "cc");
}
}
static __inline void
bus_space_write_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, const u_int32_t *addr, size_t count)
{
if (tag == X86_BUS_SPACE_IO) {
int _port_ = bsh + offset;
__asm __volatile(" \n\
1: lodsl \n\
outl %%eax,%w0 \n\
addl $4,%0 \n\
loop 1b" :
"=d" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"%eax", "memory", "cc");
} else {
bus_space_handle_t _port_ = bsh + offset;
__asm __volatile(" \n\
repne \n\
movsl" :
"=D" (_port_), "=S" (addr), "=c" (count) :
"0" (_port_), "1" (addr), "2" (count) :
"memory", "cc");
}
}
#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.
*/
static __inline void bus_space_set_multi_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
u_int8_t value, size_t count);
static __inline void bus_space_set_multi_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
u_int16_t value, size_t count);
static __inline void bus_space_set_multi_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset,
u_int32_t value, size_t count);
static __inline void
bus_space_set_multi_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
while (count--)
outb(addr, value);
else
while (count--)
*(volatile u_int8_t *)(addr) = value;
}
static __inline void
bus_space_set_multi_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
while (count--)
outw(addr, value);
else
while (count--)
*(volatile u_int16_t *)(addr) = value;
}
static __inline void
bus_space_set_multi_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int32_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
while (count--)
outl(addr, value);
else
while (count--)
*(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'.
*/
static __inline void bus_space_set_region_1(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value,
size_t count);
static __inline void bus_space_set_region_2(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value,
size_t count);
static __inline void bus_space_set_region_4(bus_space_tag_t tag,
bus_space_handle_t bsh,
bus_size_t offset, u_int32_t value,
size_t count);
static __inline void
bus_space_set_region_1(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int8_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
for (; count != 0; count--, addr++)
outb(addr, value);
else
for (; count != 0; count--, addr++)
*(volatile u_int8_t *)(addr) = value;
}
static __inline void
bus_space_set_region_2(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int16_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
for (; count != 0; count--, addr += 2)
outw(addr, value);
else
for (; count != 0; count--, addr += 2)
*(volatile u_int16_t *)(addr) = value;
}
static __inline void
bus_space_set_region_4(bus_space_tag_t tag, bus_space_handle_t bsh,
bus_size_t offset, u_int32_t value, size_t count)
{
bus_space_handle_t addr = bsh + offset;
if (tag == X86_BUS_SPACE_IO)
for (; count != 0; count--, addr += 4)
outl(addr, value);
else
for (; count != 0; count--, addr += 4)
*(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.
*/
static __inline void bus_space_copy_region_1(bus_space_tag_t tag,
bus_space_handle_t bsh1,
bus_size_t off1,
bus_space_handle_t bsh2,
bus_size_t off2, size_t count);
static __inline void bus_space_copy_region_2(bus_space_tag_t tag,
bus_space_handle_t bsh1,
bus_size_t off1,
bus_space_handle_t bsh2,
bus_size_t off2, size_t count);
static __inline void bus_space_copy_region_4(bus_space_tag_t tag,
bus_space_handle_t bsh1,
bus_size_t off1,
bus_space_handle_t bsh2,
bus_size_t off2, size_t count);
static __inline void
bus_space_copy_region_1(bus_space_tag_t tag, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_space_handle_t addr1 = bsh1 + off1;
bus_space_handle_t addr2 = bsh2 + off2;
if (tag == X86_BUS_SPACE_IO) {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1++, addr2++)
outb(addr2, inb(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += (count - 1), addr2 += (count - 1);
count != 0; count--, addr1--, addr2--)
outb(addr2, inb(addr1));
}
} else {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1++, addr2++)
*(volatile u_int8_t *)(addr2) =
*(volatile u_int8_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += (count - 1), addr2 += (count - 1);
count != 0; count--, addr1--, addr2--)
*(volatile u_int8_t *)(addr2) =
*(volatile u_int8_t *)(addr1);
}
}
}
static __inline void
bus_space_copy_region_2(bus_space_tag_t tag, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_space_handle_t addr1 = bsh1 + off1;
bus_space_handle_t addr2 = bsh2 + off2;
if (tag == X86_BUS_SPACE_IO) {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 2, addr2 += 2)
outw(addr2, inw(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
count != 0; count--, addr1 -= 2, addr2 -= 2)
outw(addr2, inw(addr1));
}
} else {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 2, addr2 += 2)
*(volatile u_int16_t *)(addr2) =
*(volatile u_int16_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += 2 * (count - 1), addr2 += 2 * (count - 1);
count != 0; count--, addr1 -= 2, addr2 -= 2)
*(volatile u_int16_t *)(addr2) =
*(volatile u_int16_t *)(addr1);
}
}
}
static __inline void
bus_space_copy_region_4(bus_space_tag_t tag, bus_space_handle_t bsh1,
bus_size_t off1, bus_space_handle_t bsh2,
bus_size_t off2, size_t count)
{
bus_space_handle_t addr1 = bsh1 + off1;
bus_space_handle_t addr2 = bsh2 + off2;
if (tag == X86_BUS_SPACE_IO) {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 4, addr2 += 4)
outl(addr2, inl(addr1));
} else {
/* dest after src: copy backwards */
for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
count != 0; count--, addr1 -= 4, addr2 -= 4)
outl(addr2, inl(addr1));
}
} else {
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; count != 0; count--, addr1 += 4, addr2 += 4)
*(volatile u_int32_t *)(addr2) =
*(volatile u_int32_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += 4 * (count - 1), addr2 += 4 * (count - 1);
count != 0; count--, addr1 -= 4, addr2 -= 4)
*(volatile u_int32_t *)(addr2) =
*(volatile u_int32_t *)(addr1);
}
}
}
#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.
*
* void bus_space_barrier(bus_space_tag_t tag, bus_space_handle_t bsh,
* bus_size_t offset, bus_size_t len, int flags);
*
*
* Note that BUS_SPACE_BARRIER_WRITE doesn't do anything other than
* prevent reordering by the compiler; all Intel x86 processors currently
* retire operations outside the CPU in program order.
*/
static __inline void
bus_space_barrier(bus_space_tag_t tag __unused, bus_space_handle_t bsh __unused,
bus_size_t offset __unused, bus_size_t len __unused, int flags)
{
if (flags & BUS_SPACE_BARRIER_READ)
#ifdef __amd64__
__asm __volatile("lock; addl $0,0(%%rsp)" : : : "memory");
#else
__asm __volatile("lock; addl $0,0(%%esp)" : : : "memory");
#endif
else
__compiler_membar();
}
#ifdef BUS_SPACE_NO_LEGACY
#undef inb
#undef outb
#define inb(a) compiler_error
#define inw(a) compiler_error
#define inl(a) compiler_error
#define outb(a, b) compiler_error
#define outw(a, b) compiler_error
#define outl(a, b) compiler_error
#endif
/*
* Stream accesses are the same as normal accesses on x86; there are no
* supported bus systems with an endianess different from the host one.
*/
#define bus_space_read_stream_1(t, h, o) bus_space_read_1((t), (h), (o))
#define bus_space_read_stream_2(t, h, o) bus_space_read_2((t), (h), (o))
#define bus_space_read_stream_4(t, h, o) bus_space_read_4((t), (h), (o))
#define bus_space_read_multi_stream_1(t, h, o, a, c) \
bus_space_read_multi_1((t), (h), (o), (a), (c))
#define bus_space_read_multi_stream_2(t, h, o, a, c) \
bus_space_read_multi_2((t), (h), (o), (a), (c))
#define bus_space_read_multi_stream_4(t, h, o, a, c) \
bus_space_read_multi_4((t), (h), (o), (a), (c))
#define bus_space_write_stream_1(t, h, o, v) \
bus_space_write_1((t), (h), (o), (v))