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/* $OpenBSD: bus.h,v 1.14 1998/01/20 18:40:11 niklas 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 _ARC_BUS_H_
#define _ARC_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 arc_bus_space *bus_space_tag_t;
struct arc_bus_space {
u_int32_t bus_base;
u_int8_t bus_sparse1; /* Sparse addressing shift count */
u_int8_t bus_sparse2; /* Sparse addressing shift count */
u_int8_t bus_sparse4; /* Sparse addressing shift count */
u_int8_t bus_sparse8; /* Sparse addressing shift count */
};
extern struct arc_bus_space arc_bus_io, arc_bus_mem;
/*
* Access methods for bus resources
*/
#define bus_space_map(t, addr, size, cacheable, bshp) \
((*(bshp) = (t)->bus_base + (addr)), 0)
#define bus_space_unmap(t, bsh, size)
#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) \
{ \
return *(volatile CAT3(u_int,m,_t) *)(bsh + ((ba) << CAT(bst->bus_sparse,n))); \
}
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_read_multi_1(t, h, o, a, c) do { \
insb((u_int8_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_read_multi_2(t, h, o, a, c) do { \
insw((u_int16_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_read_multi_4(t, h, o, a, c) do { \
insl((u_int32_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 not implemented !!!
#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) \
{ \
*(volatile CAT3(u_int,m,_t) *)(bsh + ((ba) << CAT(bst->bus_sparse,n))) = 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_write_multi_1(t, h, o, a, c) do { \
outsb((u_int8_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_write_multi_2(t, h, o, a, c) do { \
outsw((u_int16_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_write_multi_4(t, h, o, a, c) do { \
outsl((u_int32_t *)((h) + (o)), (a), (c)); \
} while(0)
#define bus_space_write_multi_8 !!! bus_space_write_multi_8 not implemented !!!
/* These are OpenBSD extensions to the general NetBSD bus interface. */
#define bus_space_read_raw_multi(n,m,l) \
static __inline void \
CAT(bus_space_read_raw_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh, \
bus_addr_t ba, u_int8_t *buf, bus_size_t cnt) \
{ \
CAT(bus_space_read_multi_,n)(bst, bsh, ba, (CAT3(u_int,m,_t) *)buf, \
cnt >> l); \
}
bus_space_read_raw_multi(2,16,1)
bus_space_read_raw_multi(4,32,2)
#define bus_space_read_raw_multi_8 \
!!! bus_space_read_raw_multi_8 not implemented !!!
#define bus_space_write_raw_multi(n,m,l) \
static __inline void \
CAT(bus_space_write_raw_multi_,n)(bus_space_tag_t bst, bus_space_handle_t bsh,\
bus_addr_t ba, const u_int8_t *buf, bus_size_t cnt) \
{ \
CAT(bus_space_write_multi_,n)(bst, bsh, ba, \
(const CAT3(u_int,m,_t) *)buf, cnt >> l); \
}
bus_space_write_raw_multi(2,16,1)
bus_space_write_raw_multi(4,32,2)
#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 /* _ARC_BUS_H_ */
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