* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.

/* $NetBSD: bus.h,v 1.26 2019/09/23 16:17:58 skrll Exp $ */

/*-
* Copyright (c) 1998, 2001 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.
*/

/*
* bus_space(9) and bus_dma(9) interface for NetBSD/x68k.
*/

#ifndef _X68K_BUS_H_
#define _X68K_BUS_H_

/*
* Bus address and size types
*/
typedef u_long bus_addr_t;
typedef u_long bus_size_t;
typedef u_long bus_space_handle_t;

#define PRIxBUSADDR "lx"
#define PRIxBUSSIZE "lx"
#define PRIuBUSSIZE "lu"
#define PRIxBSH "lx"

/*
* Bus space descripter
*/
typedef struct x68k_bus_space *bus_space_tag_t;

struct x68k_bus_space {
#if 0
enum {
X68K_INTIO_BUS,
X68K_PCI_BUS,
X68K_NEPTUNE_BUS
} x68k_bus_type;
#endif

int (*x68k_bus_space_map)(
bus_space_tag_t,
bus_addr_t,
bus_size_t,
int, /* flags */
bus_space_handle_t *);
void (*x68k_bus_space_unmap)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t);
int (*x68k_bus_space_subregion)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t, /* offset */
bus_size_t, /* size */
bus_space_handle_t *);

int (*x68k_bus_space_alloc)(
bus_space_tag_t,
bus_addr_t, /* reg_start */
bus_addr_t, /* reg_end */
bus_size_t,
bus_size_t, /* alignment */
bus_size_t, /* boundary */
int, /* flags */
bus_addr_t *,
bus_space_handle_t *);
void (*x68k_bus_space_free)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t);

#if 0
void (*x68k_bus_space_barrier)(
bus_space_tag_t,
bus_space_handle_t,
bus_size_t, /* offset */
bus_size_t, /* length */
int); /* flags */
#endif

device_t x68k_bus_device;
};

int x68k_bus_space_alloc(bus_space_tag_t, bus_addr_t, bus_addr_t, bus_size_t,
bus_size_t, bus_size_t, int, bus_addr_t *, bus_space_handle_t *);
void x68k_bus_space_free(bus_space_tag_t, bus_space_handle_t, bus_size_t);

/*
* bus_space(9) interface
*/

#define bus_space_map(t, a, s, f, h) \
((*((t)->x68k_bus_space_map)) ((t), (a), (s), (f), (h)))
#define bus_space_unmap(t, h, s) \
((*((t)->x68k_bus_space_unmap)) ((t), (h), (s)))
#define bus_space_subregion(t, h, o, s, p) \
((*((t)->x68k_bus_space_subregion)) ((t), (h), (o), (s), (p)))
#define BUS_SPACE_MAP_CACHEABLE 0x0001
#define BUS_SPACE_MAP_LINEAR 0x0002
#define BUS_SPACE_MAP_PREFETCHABLE 0x0004
/*
* For simpler hardware, many x68k devices are mapped with shifted address
* i.e. only on even or odd addresses.
*/
#define BUS_SPACE_MAP_SHIFTED_MASK 0x1001
#define BUS_SPACE_MAP_SHIFTED_ODD 0x1001
#define BUS_SPACE_MAP_SHIFTED_EVEN 0x1000
#define BUS_SPACE_MAP_SHIFTED BUS_SPACE_MAP_SHIFTED_ODD

#define bus_space_alloc(t, rs, re, s, a, b, f, r, h) \
((*((t)->x68k_bus_space_alloc)) ((t), \
(rs), (re), (s), (a), (b), (f), (r), (h)))
#define bus_space_free(t, h, s) \
((*((t)->x68k_bus_space_free)) ((t), (h), (s)))

/*
* Note: the 680x0 does not currently require barriers, but we must
* provide the flags to MI code.
*/
#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_read_1(t,h,o) _bus_space_read_1(t,h,o)
#define bus_space_read_2(t,h,o) _bus_space_read_2(t,h,o)
#define bus_space_read_4(t,h,o) _bus_space_read_4(t,h,o)

#define bus_space_read_multi_1(t,h,o,p,c) _bus_space_read_multi_1(t,h,o,p,c)
#define bus_space_read_multi_2(t,h,o,p,c) _bus_space_read_multi_2(t,h,o,p,c)
#define bus_space_read_multi_4(t,h,o,p,c) _bus_space_read_multi_4(t,h,o,p,c)

#define bus_space_read_region_1(t,h,o,p,c) _bus_space_read_region_1(t,h,o,p,c)
#define bus_space_read_region_2(t,h,o,p,c) _bus_space_read_region_2(t,h,o,p,c)
#define bus_space_read_region_4(t,h,o,p,c) _bus_space_read_region_4(t,h,o,p,c)

#define bus_space_write_1(t,h,o,v) _bus_space_write_1(t,h,o,v)
#define bus_space_write_2(t,h,o,v) _bus_space_write_2(t,h,o,v)
#define bus_space_write_4(t,h,o,v) _bus_space_write_4(t,h,o,v)

#define bus_space_write_multi_1(t,h,o,p,c) _bus_space_write_multi_1(t,h,o,p,c)
#define bus_space_write_multi_2(t,h,o,p,c) _bus_space_write_multi_2(t,h,o,p,c)
#define bus_space_write_multi_4(t,h,o,p,c) _bus_space_write_multi_4(t,h,o,p,c)

#define bus_space_write_region_1(t,h,o,p,c) \
_bus_space_write_region_1(t,h,o,p,c)
#define bus_space_write_region_2(t,h,o,p,c) \
_bus_space_write_region_2(t,h,o,p,c)
#define bus_space_write_region_4(t,h,o,p,c) \
_bus_space_write_region_4(t,h,o,p,c)

#define bus_space_set_region_1(t,h,o,v,c) _bus_space_set_region_1(t,h,o,v,c)
#define bus_space_set_region_2(t,h,o,v,c) _bus_space_set_region_2(t,h,o,v,c)
#define bus_space_set_region_4(t,h,o,v,c) _bus_space_set_region_4(t,h,o,v,c)

#define bus_space_copy_region_1(t,sh,so,dh,do,c) \
_bus_space_copy_region_1(t,sh,so,dh,do,c)
#define bus_space_copy_region_2(t,sh,so,dh,do,c) \
_bus_space_copy_region_2(t,sh,so,dh,do,c)
#define bus_space_copy_region_4(t,sh,so,dh,do,c) \
_bus_space_copy_region_4(t,sh,so,dh,do,c)

static __inline uint8_t _bus_space_read_1
(bus_space_tag_t, bus_space_handle_t bsh, bus_size_t offset);
static __inline uint16_t _bus_space_read_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t);
static __inline uint32_t _bus_space_read_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t);

static __inline void _bus_space_read_multi_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint8_t *, bus_size_t);
static __inline void _bus_space_read_multi_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint16_t *, bus_size_t);
static __inline void _bus_space_read_multi_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint32_t *, bus_size_t);

static __inline void _bus_space_read_region_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint8_t *, bus_size_t);
static __inline void _bus_space_read_region_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint16_t *, bus_size_t);
static __inline void _bus_space_read_region_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint32_t *, bus_size_t);

static __inline void _bus_space_write_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint8_t);
static __inline void _bus_space_write_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint16_t);
static __inline void _bus_space_write_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t, uint32_t);

static __inline void _bus_space_write_multi_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint8_t *, bus_size_t);
static __inline void _bus_space_write_multi_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint16_t *, bus_size_t);
static __inline void _bus_space_write_multi_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint32_t *, bus_size_t);

static __inline void _bus_space_write_region_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint8_t *, bus_size_t);
static __inline void _bus_space_write_region_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint16_t *, bus_size_t);
static __inline void _bus_space_write_region_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
const uint32_t *, bus_size_t);

static __inline void _bus_space_set_region_1
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint8_t, bus_size_t);
static __inline void _bus_space_set_region_2
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint16_t, bus_size_t);
static __inline void _bus_space_set_region_4
(bus_space_tag_t, bus_space_handle_t, bus_size_t,
uint32_t, bus_size_t);

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, bus_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, bus_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, bus_size_t);

#define __X68K_BUS_ADDR(tag, handle, offset) \
(((long)(handle) < 0 ? (offset) * 2 : (offset)) \
+ ((handle) & 0x7fffffff))

static __inline uint8_t
_bus_space_read_1(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t offset)
{

return *((volatile uint8_t *) __X68K_BUS_ADDR(t, bsh, offset));
}

static __inline uint16_t
_bus_space_read_2(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t offset)
{

return *((volatile uint16_t *) __X68K_BUS_ADDR(t, bsh, offset));
}

static __inline uint32_t
_bus_space_read_4(bus_space_tag_t t, bus_space_handle_t bsh, bus_size_t offset)
{

return *((volatile uint32_t *) __X68K_BUS_ADDR(t, bsh, offset));
}

static __inline void
_bus_space_read_multi_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
volatile uint8_t *regadr;

regadr = (volatile uint8_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *regadr;
}

static __inline void
_bus_space_read_multi_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t *datap, bus_size_t count)
{
volatile uint16_t *regadr;

regadr = (volatile uint16_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *regadr;
}

static __inline void
_bus_space_read_multi_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
volatile uint32_t *regadr;

regadr = (volatile uint32_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *regadr;
}

static __inline void
_bus_space_read_region_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t *datap, bus_size_t count)
{
volatile uint8_t *addr;

addr = (volatile uint8_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *addr++;
}

static __inline void
_bus_space_read_region_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t *datap, bus_size_t count)
{
volatile uint16_t *addr;

addr = (volatile uint16_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *addr++;
}

static __inline void
_bus_space_read_region_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t *datap, bus_size_t count)
{
volatile uint32_t *addr;

addr = (volatile uint32_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*datap++ = *addr++;
}

static __inline void
_bus_space_write_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value)
{

*(volatile uint8_t *) __X68K_BUS_ADDR(t, bsh, offset) = value;
}

static __inline void
_bus_space_write_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value)
{

*(volatile uint16_t *) __X68K_BUS_ADDR(t, bsh, offset) = value;
}

static __inline void
_bus_space_write_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t value)
{

*(volatile uint32_t *) __X68K_BUS_ADDR(t, bsh, offset) = value;
}

static __inline void
_bus_space_write_multi_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint8_t *datap, bus_size_t count)
{
volatile uint8_t *regadr;

regadr = (volatile uint8_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*regadr = *datap++;
}

static __inline void
_bus_space_write_multi_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint16_t *datap, bus_size_t count)
{
volatile uint16_t *regadr;

regadr = (volatile uint16_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*regadr = *datap++;
}

static __inline void
_bus_space_write_multi_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint32_t *datap, bus_size_t count)
{
volatile uint32_t *regadr;

regadr = (volatile uint32_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*regadr = *datap++;
}

static __inline void
_bus_space_write_region_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint8_t *datap, bus_size_t count)
{
volatile uint8_t *addr;

addr = (volatile uint8_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = *datap++;
}

static __inline void
_bus_space_write_region_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint16_t *datap, bus_size_t count)
{
volatile uint16_t *addr;

addr = (volatile uint16_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = *datap++;
}

static __inline void
_bus_space_write_region_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, const uint32_t *datap, bus_size_t count)
{
volatile uint32_t *addr;

addr = (volatile uint32_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = *datap++;
}

static __inline void
_bus_space_set_region_1(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint8_t value, bus_size_t count)
{
volatile uint8_t *addr;

addr = (volatile uint8_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = value;
}

static __inline void
_bus_space_set_region_2(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint16_t value, bus_size_t count)
{
volatile uint16_t *addr;

addr = (volatile uint16_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = value;
}

static __inline void
_bus_space_set_region_4(bus_space_tag_t t, bus_space_handle_t bsh,
bus_size_t offset, uint32_t value, bus_size_t count)
{
volatile uint32_t *addr;

addr = (volatile uint32_t *)__X68K_BUS_ADDR(t, bsh, offset);

for (; count; count--)
*addr++ = value;
}

static __inline void
_bus_space_copy_region_1(bus_space_tag_t t,
bus_space_handle_t sbsh, bus_size_t soffset,
bus_space_handle_t dbsh, bus_size_t doffset,
bus_size_t count)
{
volatile uint8_t *saddr = (void *) (sbsh + soffset);
volatile uint8_t *daddr = (void *) (dbsh + doffset);

if ((uint32_t) saddr >= (uint32_t) daddr)
while (count-- > 0)
*daddr++ = *saddr++;
else {
saddr += count;
daddr += count;
while (count-- > 0)
*--daddr = *--saddr;
}
}

static __inline void
_bus_space_copy_region_2(bus_space_tag_t t,
bus_space_handle_t sbsh, bus_size_t soffset,
bus_space_handle_t dbsh, bus_size_t doffset,
bus_size_t count)
{
volatile uint16_t *saddr = (void *) (sbsh + soffset);
volatile uint16_t *daddr = (void *) (dbsh + doffset);

if ((uint32_t) saddr >= (uint32_t) daddr)
while (count-- > 0)
*daddr++ = *saddr++;
else {
saddr += count;
daddr += count;
while (count-- > 0)
*--daddr = *--saddr;
}
}

static __inline void
_bus_space_copy_region_4(bus_space_tag_t t,
bus_space_handle_t sbsh, bus_size_t soffset,
bus_space_handle_t dbsh, bus_size_t doffset,
bus_size_t count)
{
volatile uint32_t *saddr = (void *) (sbsh + soffset);
volatile uint32_t *daddr = (void *) (dbsh + doffset);

if ((uint32_t) saddr >= (uint32_t) daddr)
while (count-- > 0)
*daddr++ = *saddr++;
else {
saddr += count;
daddr += count;
while (count-- > 0)
*--daddr = *--saddr;
}
}

#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)

/*
* DMA segment
*/
struct x68k_bus_dma_segment {
bus_addr_t ds_addr;
bus_size_t ds_len;
};
typedef struct x68k_bus_dma_segment bus_dma_segment_t;

/*
* DMA descriptor
*/
/* Forwards needed by prototypes below. */
struct mbuf;
struct uio;

typedef struct x68k_bus_dma *bus_dma_tag_t;
typedef struct x68k_bus_dmamap *bus_dmamap_t;

#define BUS_DMA_TAG_VALID(t) ((t) != (bus_dma_tag_t)0)

struct x68k_bus_dma {
/*
* 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 (*x68k_dmamap_create)(bus_dma_tag_t, bus_size_t, int,
bus_size_t, bus_size_t, int, bus_dmamap_t *);
void (*x68k_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
int (*x68k_dmamap_load)(bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int (*x68k_dmamap_load_mbuf)(bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int);
int (*x68k_dmamap_load_uio)(bus_dma_tag_t, bus_dmamap_t,
struct uio *, int);
int (*x68k_dmamap_load_raw)(bus_dma_tag_t, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void (*x68k_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
void (*x68k_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
bus_addr_t, bus_size_t, int);

/*
* DMA memory utility functions.
*/
int (*x68k_dmamem_alloc)(bus_dma_tag_t, bus_size_t, bus_size_t,
bus_size_t, bus_dma_segment_t *, int, int *, int);
void (*x68k_dmamem_free)(bus_dma_tag_t,
bus_dma_segment_t *, int);
int (*x68k_dmamem_map)(bus_dma_tag_t, bus_dma_segment_t *,
int, size_t, void **, int);
void (*x68k_dmamem_unmap)(bus_dma_tag_t, void *, size_t);
paddr_t (*x68k_dmamem_mmap)(bus_dma_tag_t, bus_dma_segment_t *,
int, off_t, int, int);
};

/*
* bus_dmamap_t
*
* Describes a DMA mapping.
*/
struct x68k_bus_dmamap {
/*
* PRIVATE MEMBERS: not for use my machine-independent code.
*/
bus_size_t x68k_dm_size; /* largest DMA transfer mappable */
int x68k_dm_segcnt; /* number of segs this map can map */
bus_size_t x68k_dm_maxmaxsegsz; /* fixed largest possible segment*/
bus_size_t x68k_dm_boundary; /* don't cross this */
bus_addr_t x68k_dm_bounce_thresh; /* bounce threshold */
int x68k_dm_flags; /* misc. flags */

void *x68k_dm_cookie; /* cookie for bus-specific functions */

/*
* PUBLIC MEMBERS: these are used by machine-independent code.
*/
bus_size_t dm_maxsegsz; /* largest possible segment */
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 */
};

int x68k_bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t,
bus_size_t, int, bus_dmamap_t *);
void x68k_bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t);
int x68k_bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, struct proc *, int);
int x68k_bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t,
struct mbuf *, int);
int x68k_bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t,
struct uio *, int);
int x68k_bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t,
bus_dma_segment_t *, int, bus_size_t, int);
void x68k_bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t);
void x68k_bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
bus_size_t, int);

int x68k_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 x68k_bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs);
int x68k_bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs, size_t size, void **kvap, int flags);
void x68k_bus_dmamem_unmap(bus_dma_tag_t tag, void *kva,
size_t size);
paddr_t x68k_bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs,
int nsegs, off_t off, int prot, int flags);

int x68k_bus_dmamap_load_buffer(bus_dmamap_t, void *,
bus_size_t buflen, struct proc *, int, paddr_t *, int *, int);
int x68k_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);

#define bus_dmamap_create(t,s,n,m,b,f,p) \
((*((t)->x68k_dmamap_create)) ((t),(s),(n),(m),(b),(f),(p)))
#define bus_dmamap_destroy(t,p) \
((*((t)->x68k_dmamap_destroy)) ((t),(p)))
#define bus_dmamap_load(t,m,b,s,p,f) \
((*((t)->x68k_dmamap_load)) ((t),(m),(b),(s),(p),(f)))
#define bus_dmamap_load_mbuf(t,m,b,f) \
((*((t)->x68k_dmamap_load_mbuf)) ((t),(m),(b),(f)))
#define bus_dmamap_load_uio(t,m,u,f) \
((*((t)->x68k_dmamap_load_uio)) ((t),(m),(u),(f)))
#define bus_dmamap_load_raw(t,m,sg,n,s,f) \
((*((t)->x68k_dmamap_load_raw)) ((t),(m),(sg),(n),(s),(f)))
#define bus_dmamap_unload(t,p) \
((*((t)->x68k_dmamap_unload)) ((t),(p)))
#define bus_dmamap_sync(t,p,o,l,ops) \
((*((t)->x68k_dmamap_sync)) ((t),(p),(o),(l),(ops)))

#define bus_dmamem_alloc(t,s,a,b,sg,n,r,f) \
((*((t)->x68k_dmamem_alloc)) ((t),(s),(a),(b),(sg),(n),(r),(f)))
#define bus_dmamem_free(t,sg,n) \
((*((t)->x68k_dmamem_free)) ((t),(sg),(n)))
#define bus_dmamem_map(t,sg,n,s,k,f) \
((*((t)->x68k_dmamem_map)) ((t),(sg),(n),(s),(k),(f)))
#define bus_dmamem_unmap(t,k,s) \
((*((t)->x68k_dmamem_unmap)) ((t),(k),(s)))
#define bus_dmamem_mmap(t,sg,n,o,p,f) \
((*((t)->x68k_dmamem_mmap)) ((t),(sg),(n),(o),(p),(f)))

#define bus_dmatag_subregion(t, mna, mxa, nt, f) EOPNOTSUPP
#define bus_dmatag_destroy(t)

/*
* Flags used in various bus DMA methods.
*/
#define BUS_DMA_WAITOK 0x000 /* safe to sleep (pseudo-flag) */
#define BUS_DMA_NOWAIT 0x001 /* not safe to sleep */
#define BUS_DMA_ALLOCNOW 0x002 /* perform resource allocation now */
#define BUS_DMA_COHERENT 0x004 /* hint: map memory DMA coherent */
#define BUS_DMA_STREAMING 0x008 /* hint: sequential, unidirectional */
#define BUS_DMA_BUS1 0x010 /* placeholders for bus functions... */
#define BUS_DMA_BUS2 0x020
#define BUS_DMA_BUS3 0x040
#define BUS_DMA_BUS4 0x080
#define BUS_DMA_READ 0x100 /* mapping is device -> memory only */
#define BUS_DMA_WRITE 0x200 /* mapping is memory -> device only */
#define BUS_DMA_NOCACHE 0x400 /* hint: map non-cached memory */

/*
* Operations performed by bus_dmamap_sync().
*/
#define BUS_DMASYNC_PREREAD 0x01 /* pre-read synchronization */
#define BUS_DMASYNC_POSTREAD 0x02 /* post-read synchronization */
#define BUS_DMASYNC_PREWRITE 0x04 /* pre-write synchronization */
#define BUS_DMASYNC_POSTWRITE 0x08 /* post-write synchronization */

#endif /* _X68K_BUS_H_ */