<commit_before>/*	$OpenBSD: bus.h,v 1.9 2000/11/11 17:27:45 drahn Exp $	*/

/*
 * Copyright (c) 1997 <NAME>.  All rights reserved.
 * Copyright (c) 1996 <NAME>.  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 <NAME>
 *	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<commit_msg>Add support for bus_space_write_region_[1248] bus_space_read_region_[1248] as needed for some drivers, primarily drivers from NetBSD, where these defines came from.<commit_after>/*	$OpenBSD: bus.h,v 1.10 2001/02/07 06:06:10 drahn Exp $	*/

/*
 * Copyright (c) 1997 <NAME>.  All rights reserved.
 * Copyright (c) 1996 <NAME>.  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 <NAME>
 *	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 !!!

/*
 *	void bus_space_read_region_N __P((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.
 */
#define __BA(t, h, o) ((void *)((h) + (o)))

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 = __BA(tag, 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 = __BA(tag, 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 = __BA(tag, bsh, offset);

	while (count--)
		__asm __volatile("lwbrx %0, 0, %1" :
			"=r"(*addr++) : "r"(s++));
	__asm __volatile("eieio; sync");
}

#if 0	/* Cause a link error for bus_space_read_region_8 */
#define	bus_space_read_region_8		!!! unimplemented !!!
#endif


/*
 *	void bus_space_write_region_N __P((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(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 = __BA(tag, 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 = __BA(tag, 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 = __BA(tag, bsh, offset);

	while (count--)
		__asm __volatile("stwbrx %0, 0, %1" ::
			"r"(*addr++), "r"(d++));
	__asm __volatile("eieio; sync");
}

#if 0
#define	bus_space_write_region_8 !!! bus_space_write_region_8 unimplemented !!!
#endif


/* 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
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