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|
/* $NetBSD: bus.h,v 1.1 2001/06/06 17:37:37 matt Exp $ */
/* $OpenBSD: bus_mi.h,v 1.5 2002/06/08 15:49:57 miod Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 Jason R. Thorpe. 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.
*/
/*
* Copyright (c) 1997 Per Fogelstrom. All rights reserved.
* Copyright (c) 1996 Niklas Hallqvist. 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 _POWERPC_BUS_H_
#define _POWERPC_BUS_H_
#include <machine/pio.h>
/*
* Bus access types.
*/
typedef u_int32_t bus_addr_t;
typedef u_int32_t bus_size_t;
typedef u_int32_t bus_space_handle_t;
typedef const struct ppc_bus_space *bus_space_tag_t;
struct ppc_bus_space {
u_int32_t pbs_type;
bus_addr_t pbs_offset;
bus_addr_t pbs_base;
bus_addr_t pbs_limit;
int (*pbs_map)(bus_space_tag_t, bus_addr_t, bus_size_t, int,
bus_space_handle_t *);
void (*pbs_unmap)(bus_space_tag_t, bus_space_handle_t,
bus_size_t);
int (*pbs_alloc)(bus_space_tag_t, bus_addr_t, bus_addr_t,
bus_size_t, bus_size_t align, bus_size_t, int, bus_addr_t *,
bus_space_handle_t *);
void (*pbs_free)(bus_space_tag_t, bus_space_handle_t, bus_size_t);
};
#define BUS_SPACE_MAP_CACHEABLE 0x01
#define BUS_SPACE_MAP_LINEAR 0x02
#define BUS_SPACE_MAP_PREFETCHABLE 0x04
#ifdef __STDC__
#define CAT(a,b) a##b
#define CAT3(a,b,c) a##b##c
#else
#define CAT(a,b) a/**/b
#define CAT3(a,b,c) a/**/b/**/c
#endif
/*
* Access methods for bus resources
*/
#define __BUS_SPACE_HAS_STREAM_METHODS
/*
* int bus_space_map(bus_space_tag_t t, bus_addr_t addr,
* bus_size_t size, int flags, bus_space_handle_t *bshp);
*
* Map a region of bus space.
*/
#define bus_space_map(t, a, s, f, hp) \
((*(t)->pbs_map)((t), (a), (s), (f), (hp)))
/*
* int bus_space_unmap(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t size);
*
* Unmap a region of bus space.
*/
#define bus_space_unmap(t, h, s) \
((void)(*(t)->pbs_unmap)((t), (h), (s)))
/*
* 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);
*
* Get a new handle for a subregion of an already-mapped area of bus space.
*/
#define bus_space_subregion(t, h, o, s, hp) \
((*(hp) = (h) + (o)), 0)
/*
* 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 *bpap,
* bus_space_handle_t *bshp);
*
* Allocate a region of bus space.
*/
#define bus_space_alloc(t, rs, re, s, a, b, f, ap, hp) \
((*(t)->pbs_alloc)((t), (rs), (re), (s), (a), (b), (f), (ap), (hp)))
/*
* int bus_space_free(bus_space_tag_t t,
* bus_space_handle_t bsh, bus_size_t size);
*
* Free a region of bus space.
*/
#define bus_space_free(t, h, s) \
((void)(*(t)->pbs_free)((t), (h), (s)))
/*
* u_intN_t bus_space_read_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset);
*
* Read a 1, 2, 4, or 8 byte quantity from bus space
* described by tag/handle/offset.
*/
#define bus_space_read(n,m) \
static __inline CAT3(u_int,m,_t) \
CAT(bus_space_read_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset) \
{ \
return CAT3(in,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (offset))); \
}
bus_space_read(1,8)
bus_space_read(2,16)
bus_space_read(4,32)
#define bus_space_read_8 !!! bus_space_read_8 unimplemented !!!
/*
* u_intN_t bus_space_read_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset);
*
* Read a 2, 4, or 8 byte stream quantity from bus space
* described by tag/handle/offset.
*/
#define bus_space_read_stream(n,m) \
static __inline CAT3(u_int,m,_t) \
CAT(bus_space_read_stream_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset) \
{ \
return CAT(in,m)((volatile CAT3(u_int,m,_t) *)(bsh + (offset))); \
}
bus_space_read_stream(2,16)
bus_space_read_stream(4,32)
#define bus_space_read_stream_8 !!! bus_space_read_stream_8 unimplemented !!!
/*
* void bus_space_read_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t *addr, size_t count);
*
* Read `count' 1, 2, 4, or 8 byte quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
*/
#define bus_space_read_multi(n,m) \
static __inline void \
CAT(bus_space_read_multi_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset, CAT3(u_int,m,_t) *addr, size_t count) \
{ \
while (count--) \
*addr++ = CAT(bus_space_read_,n)(tag, bsh, offset); \
}
bus_space_read_multi(1,8)
bus_space_read_multi(2,16)
bus_space_read_multi(4,32)
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 not implemented !!!
#if 0
/*
* void bus_space_read_multi_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t *addr, size_t count);
*
* Read `count' 2, 4, or 8 byte stream quantities from bus space
* described by tag/handle/offset and copy into buffer provided.
*/
#define bus_space_read_multi_stream(n,m) \
static __inline void \
CAT(bus_space_read_multi_stream_,n)(bus_space_tag_t tag, \
bus_space_handle_t bsh, \
bus_size_t offset, CAT3(u_int,m,_t) *addr, size_t count) \
{ \
CAT(ins,m)((volatile CAT3(u_int,m,_t) *)(bsh + (offset)), \
(CAT3(u_int,m,_t) *)addr, (size_t)count); \
}
bus_space_read_multi_stream(2,16)
bus_space_read_multi_stream(4,32)
#define bus_space_read_multi_stream_8 \
!!! bus_space_read_multi_stream_8 not implemented !!!
/*
* void bus_space_write_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t value);
*
* Write the 1, 2, 4, or 8 byte value `value' to bus space
* described by tag/handle/offset.
*/
#endif
#define bus_space_write(n,m) \
static __inline void \
CAT(bus_space_write_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset, CAT3(u_int,m,_t) x) \
{ \
CAT3(out,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (offset)), x); \
}
bus_space_write(1,8)
bus_space_write(2,16)
bus_space_write(4,32)
#define bus_space_write_8 !!! bus_space_write_8 unimplemented !!!
/*
* void bus_space_write_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t value);
*
* Write the 2, 4, or 8 byte stream value `value' to bus space
* described by tag/handle/offset.
*/
#define bus_space_write_stream(n,m) \
static __inline void \
CAT(bus_space_write_stream_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset, CAT3(u_int,m,_t) x) \
{ \
CAT(out,m)((volatile CAT3(u_int,m,_t) *)(bsh + (offset)), x); \
}
bus_space_write_stream(2,16)
bus_space_write_stream(4,32)
#define bus_space_write_stream_8 !!! bus_space_write_stream_8 unimplemented !!!
/*
* void bus_space_write_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const u_intN_t *addr, size_t count);
*
* Write `count' 1, 2, 4, or 8 byte quantities from the buffer
* provided to bus space described by tag/handle/offset.
*/
#define bus_space_write_multi(n,m) \
static __inline void \
CAT(bus_space_write_multi_,n)(bus_space_tag_t tag, bus_space_handle_t bsh, \
bus_size_t offset, const CAT3(u_int,m,_t) *addr, size_t count) \
{ \
while (count--) \
CAT(bus_space_write_,n)(tag, bsh, offset, *addr++); \
}
bus_space_write_multi(1,8)
bus_space_write_multi(2,16)
bus_space_write_multi(4,32)
#define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!!
#if 0
/*
* void bus_space_write_multi_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const u_intN_t *addr, size_t count);
*
* Write `count' 2, 4, or 8 byte stream quantities from the buffer
* provided to bus space described by tag/handle/offset.
*/
#define bus_space_write_multi_stream(n,m) \
static __inline void \
CAT(bus_space_write_multi_stream_,n)(bus_space_tag_t tag, \
bus_space_handle_t bsh, \
bus_size_t offset, const CAT3(u_int,m,_t) *addr, size_t count) \
{ \
CAT(outs,m)((volatile CAT3(u_int,m,_t) *)(bsh + (offset)), \
(CAT3(u_int,m,_t) *)addr, (size_t)count); \
}
bus_space_write_multi_stream(2,16)
bus_space_write_multi_stream(4,32)
#define bus_space_write_multi_stream_8 \
!!! bus_space_write_multi_stream_8 not implemented !!!
#endif
/*
* void bus_space_read_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t *addr, size_t count);
*
* 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,
bus_space_handle_t, bus_size_t, u_int8_t *, size_t);
static __inline void bus_space_read_region_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t *, size_t);
static __inline void bus_space_read_region_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t *, size_t);
static __inline void
bus_space_read_region_1(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int8_t *addr;
size_t count;
{
volatile u_int8_t *s;
s = (volatile u_int8_t *)(bsh + offset);
while (count--)
*addr++ = *s++;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_read_region_2(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t *addr;
size_t count;
{
volatile u_int16_t *s;
s = (volatile u_int16_t *)(bsh + offset);
while (count--)
__asm__ volatile("lhbrx %0, 0, %1" :
"=r"(*addr++) : "r"(s++));
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_read_region_4(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t *addr;
size_t count;
{
volatile u_int32_t *s;
s = (volatile u_int32_t *)(bsh + offset);
while (count--)
__asm__ volatile("lwbrx %0, 0, %1" :
"=r"(*addr++) : "r"(s++));
__asm__ volatile("eieio; sync");
}
#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
/*
* void bus_space_read_region_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* u_intN_t *addr, size_t count);
*
* Read `count' 2, 4, or 8 byte stream quantities from bus space
* described by tag/handle and starting at `offset' and copy into
* buffer provided.
*/
static __inline void bus_space_read_region_stream_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t *, size_t);
static __inline void bus_space_read_region_stream_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t *, size_t);
static __inline void
bus_space_read_region_stream_2(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t *addr;
size_t count;
{
volatile u_int16_t *s;
s = (volatile u_int16_t *)(bsh + offset);
while (count--)
*addr++ = *s++;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_read_region_stream_4(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t *addr;
size_t count;
{
volatile u_int32_t *s;
s = (volatile u_int32_t *)(bsh + offset);
while (count--)
*addr++ = *s++;
__asm__ volatile("eieio; sync");
}
#define bus_space_read_region_stream_8 \
!!! bus_space_read_region_stream_8 unimplemented !!!
/*
* void bus_space_write_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const u_intN_t *addr, size_t count);
*
* 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,
bus_space_handle_t, bus_size_t, const u_int8_t *, size_t);
static __inline void bus_space_write_region_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, const u_int16_t *, size_t);
static __inline void bus_space_write_region_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, const u_int32_t *, size_t);
static __inline void
bus_space_write_region_1(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
const u_int8_t *addr;
size_t count;
{
volatile u_int8_t *d;
d = (volatile u_int8_t *)(bsh + offset);
while (count--)
*d++ = *addr++;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_write_region_2(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
const u_int16_t *addr;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
__asm__ volatile("sthbrx %0, 0, %1" ::
"r"(*addr++), "r"(d++));
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_write_region_4(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
const u_int32_t *addr;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
__asm__ volatile("stwbrx %0, 0, %1" ::
"r"(*addr++), "r"(d++));
__asm__ volatile("eieio; sync");
}
#define bus_space_write_region_8 !!! bus_space_write_region_8 unimplemented !!!
/*
* void bus_space_write_region_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset,
* const u_intN_t *addr, size_t count);
*
* Write `count' 2, 4, or 8 byte stream quantities from the buffer provided
* to bus space described by tag/handle starting at `offset'.
*/
static __inline void bus_space_write_region_stream_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, const u_int16_t *, size_t);
static __inline void bus_space_write_region_stream_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, const u_int32_t *, size_t);
static __inline void
bus_space_write_region_stream_2(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
const u_int16_t *addr;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
*d++ = *addr++;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_write_region_stream_4(tag, bsh, offset, addr, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
const u_int32_t *addr;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
*d++ = *addr++;
__asm__ volatile("eieio; sync");
}
#define bus_space_write_region_stream_8 \
!!! bus_space_write_region_stream_8 unimplemented !!!
/*
* void bus_space_set_multi_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
* size_t count);
*
* 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,
bus_space_handle_t, bus_size_t, u_int8_t, size_t);
static __inline void bus_space_set_multi_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t, size_t);
static __inline void bus_space_set_multi_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t, size_t);
static __inline void
bus_space_set_multi_1(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int8_t val;
size_t count;
{
volatile u_int8_t *d;
d = (volatile u_int8_t *)(bsh + offset);
while (count--)
*d = val;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_multi_2(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t val;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
__asm__ volatile("sthbrx %0, 0, %1" ::
"r"(val), "r"(d));
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_multi_4(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t val;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
__asm__ volatile("stwbrx %0, 0, %1" ::
"r"(val), "r"(d));
__asm__ volatile("eieio; sync");
}
#define bus_space_set_multi_8 !!! bus_space_set_multi_8 unimplemented !!!
/*
* void bus_space_set_multi_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
* size_t count);
*
* Write the 2, 4, or 8 byte stream value `val' to bus space described
* by tag/handle/offset `count' times.
*/
static __inline void bus_space_set_multi_stream_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t, size_t);
static __inline void bus_space_set_multi_stream_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t, size_t);
static __inline void
bus_space_set_multi_stream_2(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t val;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
*d = val;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_multi_stream_4(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t val;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
*d = val;
__asm__ volatile("eieio; sync");
}
#define bus_space_set_multi_stream_8 \
!!! bus_space_set_multi_stream_8 unimplemented !!!
/*
* void bus_space_set_region_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
* size_t count);
*
* 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,
bus_space_handle_t, bus_size_t, u_int8_t, size_t);
static __inline void bus_space_set_region_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t, size_t);
static __inline void bus_space_set_region_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t, size_t);
static __inline void
bus_space_set_region_1(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int8_t val;
size_t count;
{
volatile u_int8_t *d;
d = (volatile u_int8_t *)(bsh + offset);
while (count--)
*d++ = val;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_region_2(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t val;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
__asm__ volatile("sthbrx %0, 0, %1" ::
"r"(val), "r"(d++));
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_region_4(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t val;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
__asm__ volatile("stwbrx %0, 0, %1" ::
"r"(val), "r"(d++));
__asm__ volatile("eieio; sync");
}
#define bus_space_set_region_8 !!! bus_space_set_region_8 unimplemented !!!
/*
* void bus_space_set_region_stream_N(bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
* size_t count);
*
* Write `count' 2, 4, or 8 byte stream value `val' to bus space described
* by tag/handle starting at `offset'.
*/
static __inline void bus_space_set_region_stream_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int16_t, size_t);
static __inline void bus_space_set_region_stream_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, u_int32_t, size_t);
static __inline void
bus_space_set_region_stream_2(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int16_t val;
size_t count;
{
volatile u_int16_t *d;
d = (volatile u_int16_t *)(bsh + offset);
while (count--)
*d++ = val;
__asm__ volatile("eieio; sync");
}
static __inline void
bus_space_set_region_stream_4(tag, bsh, offset, val, count)
bus_space_tag_t tag;
bus_space_handle_t bsh;
bus_size_t offset;
u_int32_t val;
size_t count;
{
volatile u_int32_t *d;
d = (volatile u_int32_t *)(bsh + offset);
while (count--)
*d++ = val;
__asm__ volatile("eieio; sync");
}
#define bus_space_set_region_stream_8 \
!!! bus_space_set_region_stream_8 unimplemented !!!
/*
* void bus_space_copy_region_N(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);
*
* 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,
bus_space_handle_t, bus_size_t, bus_space_handle_t,
bus_size_t, size_t);
static __inline void bus_space_copy_region_2(bus_space_tag_t,
bus_space_handle_t, bus_size_t, bus_space_handle_t,
bus_size_t, size_t);
static __inline void bus_space_copy_region_4(bus_space_tag_t,
bus_space_handle_t, bus_size_t, bus_space_handle_t,
bus_size_t, size_t);
static __inline void
bus_space_copy_region_1(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1;
bus_size_t o1;
bus_space_handle_t h2;
bus_size_t o2;
size_t c;
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1++, addr2++)
*(volatile u_int8_t *)(addr2) =
*(volatile u_int8_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += (c - 1), addr2 += (c - 1);
c != 0; c--, addr1--, addr2--)
*(volatile u_int8_t *)(addr2) =
*(volatile u_int8_t *)(addr1);
}
}
static __inline void
bus_space_copy_region_2(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1;
bus_size_t o1;
bus_space_handle_t h2;
bus_size_t o2;
size_t c;
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1 += 2, addr2 += 2)
*(volatile u_int16_t *)(addr2) =
*(volatile u_int16_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += 2 * (c - 1), addr2 += 2 * (c - 1);
c != 0; c--, addr1 -= 2, addr2 -= 2)
*(volatile u_int16_t *)(addr2) =
*(volatile u_int16_t *)(addr1);
}
}
static __inline void
bus_space_copy_region_4(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1;
bus_size_t o1;
bus_space_handle_t h2;
bus_size_t o2;
size_t c;
{
bus_addr_t addr1 = h1 + o1;
bus_addr_t addr2 = h2 + o2;
if (addr1 >= addr2) {
/* src after dest: copy forward */
for (; c != 0; c--, addr1 += 4, addr2 += 4)
*(volatile u_int32_t *)(addr2) =
*(volatile u_int32_t *)(addr1);
} else {
/* dest after src: copy backwards */
for (addr1 += 4 * (c - 1), addr2 += 4 * (c - 1);
c != 0; c--, addr1 -= 4, addr2 -= 4)
*(volatile u_int32_t *)(addr2) =
*(volatile u_int32_t *)(addr1);
}
}
#define bus_space_copy_region_8 !!! bus_space_copy_region_8 unimplemented !!!
/*
* 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);
*
*/
#define bus_space_barrier(t, h, o, l, f) \
((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)))
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
/*
* Bus DMA methods.
*/
/*
* Flags used in various bus DMA methods.
*/
#define BUS_DMA_WAITOK 0x00 /* safe to sleep (pseudo-flag) */
#define BUS_DMA_NOWAIT 0x01 /* not safe to sleep */
#define BUS_DMA_ALLOCNOW 0x02 /* perform resource allocation now */
#define BUS_DMA_COHERENT 0x04 /* hint: map memory DMA coherent */
#define BUS_DMA_STREAMING 0x08 /* hint: sequential, unidirectional */
#define BUS_DMA_BUS1 0x10 /* placeholders for bus functions... */
#define BUS_DMA_BUS2 0x20
#define BUS_DMA_BUS3 0x40
#define BUS_DMA_BUS4 0x80
/* Forwards needed by prototypes below. */
struct mbuf;
struct uio;
#define BUS_DMASYNC_PREREAD 0x01
#define BUS_DMASYNC_POSTREAD 0x02
#define BUS_DMASYNC_PREWRITE 0x04
#define BUS_DMASYNC_POSTWRITE 0x08
typedef struct powerpc_bus_dma_tag *bus_dma_tag_t;
typedef struct powerpc_bus_dmamap *bus_dmamap_t;
/*
* bus_dma_segment_t
*
* Describes a single contiguous DMA transaction. Values
* are suitable for programming into DMA registers.
*/
struct powerpc_bus_dma_segment {
bus_addr_t ds_addr; /* DMA address */
bus_size_t ds_len; /* length of transfer */
};
typedef struct powerpc_bus_dma_segment bus_dma_segment_t;
/*
* bus_dma_tag_t
*
* A machine-dependent opaque type describing the implementation of
* DMA for a given bus.
*/
struct powerpc_bus_dma_tag {
/*
* The `bounce threshold' is checked while we are loading
* the DMA map. If the physical address of the segment
* exceeds the threshold, an error will be returned. The
* caller can then take whatever action is necessary to
* bounce the transfer. If this value is 0, it will be
* ignored.
*/
bus_addr_t _bounce_thresh;
/*
* DMA mapping methods.
*/
int (*_dmamap_create)(bus_dma_tag_t, bus_size_t, int,
bus_size_t, bus_size_t, int, bus_dmamap_t *);
void (*_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
int (*_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int (*_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int);
int (*_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t,
struct uio *, int);
int (*_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void (*_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
void (*_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
bus_addr_t, bus_size_t, int);
/*
* DMA memory utility functions.
*/
int (*_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t,
bus_size_t, bus_dma_segment_t *, int, int *, int);
void (*_dmamem_free)(bus_dma_tag_t,
bus_dma_segment_t *, int);
int (*_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *,
int, size_t, caddr_t *, int);
void (*_dmamem_unmap)(bus_dma_tag_t, caddr_t, size_t);
paddr_t (*_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *,
int, off_t, int, int);
};
#define bus_dmamap_create(t, s, n, m, b, f, p) \
(*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
#define bus_dmamap_destroy(t, p) \
(*(t)->_dmamap_destroy)((t), (p))
#define bus_dmamap_load(t, m, b, s, p, f) \
(*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
#define bus_dmamap_load_mbuf(t, m, b, f) \
(*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
#define bus_dmamap_load_uio(t, m, u, f) \
(*(t)->_dmamap_load_uio)((t), (m), (u), (f))
#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
(*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
#define bus_dmamap_unload(t, p) \
(*(t)->_dmamap_unload)((t), (p))
#define bus_dmamap_sync(t, p, a, l, o) \
(void)((t)->_dmamap_sync ? \
(*(t)->_dmamap_sync)((t), (p), (a), (l), (o)) : (void)0)
#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
(*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
#define bus_dmamem_free(t, sg, n) \
(*(t)->_dmamem_free)((t), (sg), (n))
#define bus_dmamem_map(t, sg, n, s, k, f) \
(*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
#define bus_dmamem_unmap(t, k, s) \
(*(t)->_dmamem_unmap)((t), (k), (s))
#define bus_dmamem_mmap(t, sg, n, o, p, f) \
(*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
/*
* bus_dmamap_t
*
* Describes a DMA mapping.
*/
struct powerpc_bus_dmamap {
/*
* PRIVATE MEMBERS: not for use my machine-independent code.
*/
bus_size_t _dm_size; /* largest DMA transfer mappable */
int _dm_segcnt; /* number of segs this map can map */
bus_size_t _dm_maxsegsz; /* largest possible segment */
bus_size_t _dm_boundary; /* don't cross this */
bus_addr_t _dm_bounce_thresh; /* bounce threshold; see tag */
int _dm_flags; /* misc. flags */
void *_dm_cookie; /* cookie for bus-specific functions */
/*
* PUBLIC MEMBERS: these are used by machine-independent code.
*/
bus_size_t dm_mapsize; /* size of the mapping */
int dm_nsegs; /* # valid segments in mapping */
bus_dma_segment_t dm_segs[1]; /* segments; variable length */
};
#ifdef _POWERPC_BUS_DMA_PRIVATE
int _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t,
bus_size_t, int, bus_dmamap_t *);
void _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
int _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int);
int _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t,
struct uio *, int);
int _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
void _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
bus_size_t, int);
int _bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size,
bus_size_t alignment, bus_size_t boundary,
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags);
void _bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs);
int _bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs, size_t size, caddr_t *kvap, int flags);
void _bus_dmamem_unmap(bus_dma_tag_t tag, caddr_t kva,
size_t size);
paddr_t _bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs, off_t off, int prot, int flags);
int _bus_dmamem_alloc_range(bus_dma_tag_t tag, bus_size_t size,
bus_size_t alignment, bus_size_t boundary,
bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags,
paddr_t low, paddr_t high);
#endif /* _POWERPC_BUS_DMA_PRIVATE */
#endif /* _POWERPC_BUS_H_ */
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