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/* $OpenBSD: bus.h,v 1.4 1999/11/09 04:13:54 rahnds Exp $ */
/*
* 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 _MACHINE_BUS_H_
#define _MACHINE_BUS_H_
#include <machine/pio.h>
#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
/*
* 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 struct ppc_bus_space *bus_space_tag_t;
struct ppc_bus_space {
u_int32_t bus_base;
u_int8_t bus_reverse; /* Reverse bytes */
};
#define POWERPC_BUS_TAG_BASE(x) ((x)->bus_base)
extern struct ppc_bus_space ppc_isa_io, ppc_isa_mem;
/*
* Access methods for bus resources
*/
int bus_space_map __P((bus_space_tag_t t, bus_addr_t addr,
bus_size_t size, int cacheable, bus_space_handle_t *bshp));
void bus_space_unmap __P((bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t size));
int bus_space_subregion __P((bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, bus_size_t size, bus_space_handle_t *nbshp));
#define bus_space_read(n,m) \
static __inline CAT3(u_int,m,_t) \
CAT(bus_space_read_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_addr_t ba) \
{ \
if(bst->bus_reverse) \
return CAT3(in,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (ba))); \
else \
return CAT(in,m)((volatile CAT3(u_int,m,_t) *)(bsh + (ba))); \
}
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 !!!
#define bus_space_write(n,m) \
static __inline void \
CAT(bus_space_write_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_addr_t ba, CAT3(u_int,m,_t) x) \
{ \
if(bst->bus_reverse) \
CAT3(out,m,rb)((volatile CAT3(u_int,m,_t) *)(bsh + (ba)), x); \
else \
CAT(out,m)((volatile CAT3(u_int,m,_t) *)(bsh + (ba)), 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 !!!
#define bus_space_read_multi(n, m) \
static __inline void \
CAT(bus_space_read_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) \
*buf++ = CAT(bus_space_read_,n)(bst, bsh, ba); \
}
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 !!!
#define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!!
#define bus_space_write_multi(n, m) \
static __inline void \
CAT(bus_space_write_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_size_t ba, const CAT3(u_int,m,_t) *buf, bus_size_t cnt) \
{ \
while (cnt--) \
CAT(bus_space_write_,n)(bst, bsh, ba, *buf++); \
}
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 !!!
/* These are OpenBSD extensions to the general NetBSD bus interface. */
void
bus_space_read_raw_multi_1(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, u_int8_t *dst, bus_size_t size);
void
bus_space_read_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, u_int16_t *dst, bus_size_t size);
void
bus_space_read_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, u_int32_t *dst, bus_size_t size);
void
bus_space_write_raw_multi_1(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, const u_int8_t *src, bus_size_t size);
void
bus_space_write_raw_multi_2(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, const u_int16_t *src, bus_size_t size);
void
bus_space_write_raw_multi_4(bus_space_tag_t bst, bus_space_handle_t bsh,
bus_addr_t ba, const u_int32_t *src, bus_size_t size);
#define bus_space_read_raw_multi_8 \
!!! bus_space_read_raw_multi_8 not implemented !!!
#define bus_space_write_raw_multi_8 \
!!! bus_space_write_raw_multi_8 not implemented !!!
/* XXX placeholders */
typedef void *bus_dma_tag_t;
typedef void *bus_dmamap_t;
#endif /* _MACHINE_BUS_H_ */
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