freebsd-skq/sys/sparc64/include/bus.h

1443 lines
40 KiB
C

/*-
* Copyright (c) 1996, 1997, 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.
* 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) 1997-1999 Eduardo E. Horvath. All rights reserved.
* Copyright (c) 1996 Charles M. Hannum. 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.
*
* from: NetBSD: bus.h,v 1.28 2001/07/19 15:32:19 thorpej Exp
* and
* from: FreeBSD: src/sys/alpha/include/bus.h,v 1.9 2001/01/09
*
* $FreeBSD$
*/
#ifndef _MACHINE_BUS_H_
#define _MACHINE_BUS_H_
#include <machine/types.h>
#include <machine/cpufunc.h>
/*
* Debug hooks
*/
#define BSDB_ACCESS 0x01
extern int bus_space_debug;
/*
* UPA and SBUS spaces are non-cached and big endian
* (except for RAM and PROM)
*
* PCI spaces are non-cached and little endian
*/
#define UPA_BUS_SPACE 0
#define SBUS_BUS_SPACE 1
#define PCI_CONFIG_BUS_SPACE 2
#define PCI_IO_BUS_SPACE 3
#define PCI_MEMORY_BUS_SPACE 4
#define LAST_BUS_SPACE 5
extern int bus_type_asi[];
extern int bus_stream_asi[];
#define __BUS_SPACE_HAS_STREAM_METHODS 1
/*
* Bus address and size types
*/
typedef u_long bus_space_handle_t;
typedef int bus_type_t;
typedef u_long bus_addr_t;
typedef u_long bus_size_t;
#define BUS_SPACE_MAXSIZE_24BIT 0xFFFFFF
#define BUS_SPACE_MAXSIZE_32BIT 0xFFFFFFFF
#define BUS_SPACE_MAXSIZE (128 * 1024) /* Maximum supported size */
#define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF
#define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF
#define BUS_SPACE_MAXADDR 0xFFFFFFFF
#define BUS_SPACE_UNRESTRICTED (~0UL)
/*
* Access methods for bus resources and address space.
*/
typedef struct bus_space_tag *bus_space_tag_t;
struct bus_space_tag {
void *cookie;
bus_space_tag_t parent;
int type;
void (*bus_barrier) __P((
bus_space_tag_t,
bus_space_handle_t,
bus_size_t, /*offset*/
bus_size_t, /*size*/
int)); /*flags*/
};
/*
* Helpers
*/
int sparc64_bus_mem_map __P((
bus_type_t,
bus_addr_t,
bus_size_t,
int, /*flags*/
vm_offset_t, /*preferred vaddr*/
void **));
int sparc64_bus_mem_unmap __P((
void *,
bus_size_t));
bus_space_handle_t sparc64_fake_bustag __P((
int,
bus_addr_t,
struct bus_space_tag *));
/*
* Bus space function prototypes.
*/
static void bus_space_barrier __P((
bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_size_t,
int));
/* This macro finds the first "upstream" implementation of method `f' */
#define _BS_CALL(t,f) \
while (t->f == NULL) \
t = t->parent; \
return (*(t)->f)
__inline__ void
bus_space_barrier(t, h, o, s, f)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o;
bus_size_t s;
int f;
{
_BS_CALL(t, bus_barrier)(t, h, o, s, f);
}
/* flags for bus space map functions */
#define BUS_SPACE_MAP_CACHEABLE 0x0001
#define BUS_SPACE_MAP_LINEAR 0x0002
#define BUS_SPACE_MAP_READONLY 0x0004
#define BUS_SPACE_MAP_PREFETCHABLE 0x0008
/* placeholders for bus functions... */
#define BUS_SPACE_MAP_BUS1 0x0100
#define BUS_SPACE_MAP_BUS2 0x0200
#define BUS_SPACE_MAP_BUS3 0x0400
#define BUS_SPACE_MAP_BUS4 0x0800
/* flags for bus_space_barrier() */
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
/*
* u_intN_t bus_space_read_N __P((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.
*/
#ifndef BUS_SPACE_DEBUG
#define bus_space_read_1(t, h, o) \
lduba_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type])
#define bus_space_read_2(t, h, o) \
lduha_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type])
#define bus_space_read_4(t, h, o) \
lduwa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type])
#define bus_space_read_8(t, h, o) \
ldxa_nc((caddr_t)(h) + (o), bus_type_asi[(t)->type])
#else
#define bus_space_read_1(t, h, o) ({ \
unsigned char __bv = \
lduba_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr1(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (unsigned int) __bv); \
__bv; })
#define bus_space_read_2(t, h, o) ({ \
unsigned short __bv = \
lduha_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr2(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (unsigned int)__bv); \
__bv; })
#define bus_space_read_4(t, h, o) ({ \
unsigned int __bv = \
lduwa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr4(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], __bv); \
__bv; })
#define bus_space_read_8(t, h, o) ({ \
u_int64_t __bv = \
ldxa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr8(%llx + %llx, %x) -> %llx\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], __bv); \
__bv; })
#endif
/*
* void bus_space_read_multi_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/offset and copy into buffer provided.
*/
#define bus_space_read_multi_1(t, h, o, a, c) do { \
int i = c; \
u_int8_t *p = (u_int8_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_1(t, h, o); \
} while (0)
#define bus_space_read_multi_2(t, h, o, a, c) do { \
int i = c; \
u_int16_t *p = (u_int16_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_2(t, h, o); \
} while (0)
#define bus_space_read_multi_4(t, h, o, a, c) do { \
int i = c; \
u_int32_t *p = (u_int32_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_4(t, h, o); \
} while (0)
#define bus_space_read_multi_8(t, h, o, a, c) do { \
int i = c; \
u_int64_t *p = (u_int64_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_8(t, h, o); \
} while (0)
/*
* void bus_space_write_N __P((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.
*/
#ifndef BUS_SPACE_DEBUG
#define bus_space_write_1(t, h, o, v) \
stba_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v))
#define bus_space_write_2(t, h, o, v) \
stha_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v))
#define bus_space_write_4(t, h, o, v) \
stwa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v))
#define bus_space_write_8(t, h, o, v) \
stxa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v))
#else
#define bus_space_write_1(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw1(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (unsigned int) v); \
stba_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_2(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw2(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (unsigned int) v); \
stha_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_4(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw4(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (unsigned int) v); \
stwa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_8(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw8(%llx + %llx, %x) <- %llx\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_type_asi[(t)->type], (u_int64_t) v); \
stxa_nc((caddr_t)((h) + (o)), bus_type_asi[(t)->type], (v)); \
} while (0)
#endif
/*
* void bus_space_write_multi_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/offset.
*/
#define bus_space_write_multi_1(t, h, o, a, c) do { \
int i = c; \
u_int8_t *p = (u_int8_t *)a; \
while (i-- > 0) \
bus_space_write_1(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_2(t, h, o, a, c) do { \
int i = c; \
u_int16_t *p = (u_int16_t *)a; \
while (i-- > 0) \
bus_space_write_2(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_4(t, h, o, a, c) do { \
int i = c; \
u_int32_t *p = (u_int32_t *)a; \
while (i-- > 0) \
bus_space_write_4(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_8(t, h, o, a, c) do { \
int i = c; \
u_int64_t *p = (u_int64_t *)a; \
while (i-- > 0) \
bus_space_write_8(t, h, o, *p++); \
} while (0)
/*
* void bus_space_set_multi_N __P((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.
*/
#define bus_space_set_multi_1(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_1(t, h, o, v); \
} while (0)
#define bus_space_set_multi_2(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_2(t, h, o, v); \
} while (0)
#define bus_space_set_multi_4(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_4(t, h, o, v); \
} while (0)
#define bus_space_set_multi_8(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_8(t, h, o, v); \
} while (0)
/*
* void bus_space_read_region_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_read_region_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int8_t *,
bus_size_t));
static void bus_space_read_region_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int16_t *,
bus_size_t));
static void bus_space_read_region_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int32_t *,
bus_size_t));
static void bus_space_read_region_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int64_t *,
bus_size_t));
static __inline__ void
bus_space_read_region_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t *a;
{
for (; c; a++, c--, o++)
*a = bus_space_read_1(t, h, o);
}
static __inline__ void
bus_space_read_region_2(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int16_t *a;
{
for (; c; a++, c--, o+=2)
*a = bus_space_read_2(t, h, o);
}
static __inline__ void
bus_space_read_region_4(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int32_t *a;
{
for (; c; a++, c--, o+=4)
*a = bus_space_read_4(t, h, o);
}
static __inline__ void
bus_space_read_region_8(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int64_t *a;
{
for (; c; a++, c--, o+=8)
*a = bus_space_read_8(t, h, o);
}
/*
* void bus_space_write_region_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_write_region_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int8_t *,
bus_size_t));
static void bus_space_write_region_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int16_t *,
bus_size_t));
static void bus_space_write_region_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int32_t *,
bus_size_t));
static void bus_space_write_region_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int64_t *,
bus_size_t));
static __inline__ void
bus_space_write_region_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t *a;
{
for (; c; a++, c--, o++)
bus_space_write_1(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_2(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int16_t *a;
{
for (; c; a++, c--, o+=2)
bus_space_write_2(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_4(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int32_t *a;
{
for (; c; a++, c--, o+=4)
bus_space_write_4(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_8(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int64_t *a;
{
for (; c; a++, c--, o+=8)
bus_space_write_8(t, h, o, *a);
}
/*
* void bus_space_set_region_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_set_region_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int8_t,
bus_size_t));
static void bus_space_set_region_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int16_t,
bus_size_t));
static void bus_space_set_region_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int32_t,
bus_size_t));
static void bus_space_set_region_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int64_t,
bus_size_t));
static __inline__ void
bus_space_set_region_1(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t v;
{
for (; c; c--, o++)
bus_space_write_1(t, h, o, v);
}
static __inline__ void
bus_space_set_region_2(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int16_t v;
{
for (; c; c--, o+=2)
bus_space_write_2(t, h, o, v);
}
static __inline__ void
bus_space_set_region_4(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int32_t v;
{
for (; c; c--, o+=4)
bus_space_write_4(t, h, o, v);
}
static __inline__ void
bus_space_set_region_8(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int64_t v;
{
for (; c; c--, o+=8)
bus_space_write_8(t, h, o, v);
}
/*
* void bus_space_copy_region_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh1, bus_size_t off1,
* bus_space_handle_t bsh2, bus_size_t off2,
* bus_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 void bus_space_copy_region_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_8 __P((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_1(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1++, o2++)
bus_space_write_1(t, h1, o1, bus_space_read_1(t, h2, o2));
}
static __inline__ void
bus_space_copy_region_2(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=2, o2+=2)
bus_space_write_2(t, h1, o1, bus_space_read_2(t, h2, o2));
}
static __inline__ void
bus_space_copy_region_4(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=4, o2+=4)
bus_space_write_4(t, h1, o1, bus_space_read_4(t, h2, o2));
}
static __inline__ void
bus_space_copy_region_8(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=8, o2+=8)
bus_space_write_8(t, h1, o1, bus_space_read_8(t, h2, o2));
}
/*
* u_intN_t bus_space_read_stream_N __P((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.
*/
#ifndef BUS_SPACE_DEBUG
#define bus_space_read_stream_1(t, h, o) \
lduba_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type])
#define bus_space_read_stream_2(t, h, o) \
lduha_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type])
#define bus_space_read_stream_4(t, h, o) \
lduwa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type])
#define bus_space_read_stream_8(t, h, o) \
ldxa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type])
#else
#define bus_space_read_stream_1(t, h, o) ({ \
unsigned char __bv = \
lduba_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr1(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (unsigned int) __bv); \
__bv; })
#define bus_space_read_stream_2(t, h, o) ({ \
unsigned short __bv = \
lduha_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr2(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (unsigned int)__bv); \
__bv; })
#define bus_space_read_stream_4(t, h, o) ({ \
unsigned int __bv = \
lduwa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr4(%llx + %llx, %x) -> %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], __bv); \
__bv; })
#define bus_space_read_stream_8(t, h, o) ({ \
u_int64_t __bv = \
ldxa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type]); \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsr8(%llx + %llx, %x) -> %llx\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], __bv); \
__bv; })
#endif
/*
* void bus_space_read_multi_stream_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/offset and copy into buffer provided.
*/
#define bus_space_read_multi_stream_1(t, h, o, a, c) do { \
int i = c; \
u_int8_t *p = (u_int8_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_stream_1(t, h, o); \
} while (0)
#define bus_space_read_multi_stream_2(t, h, o, a, c) do { \
int i = c; \
u_int16_t *p = (u_int16_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_stream_2(t, h, o); \
} while (0)
#define bus_space_read_multi_stream_4(t, h, o, a, c) do { \
int i = c; \
u_int32_t *p = (u_int32_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_stream_4(t, h, o); \
} while (0)
#define bus_space_read_multi_stream_8(t, h, o, a, c) do { \
int i = c; \
u_int64_t *p = (u_int64_t *)a; \
while (i-- > 0) \
*p++ = bus_space_read_stream_8(t, h, o); \
} while (0)
/*
* void bus_space_write_stream_N __P((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.
*/
#ifndef BUS_SPACE_DEBUG
#define bus_space_write_stream_1(t, h, o, v) \
stba_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v))
#define bus_space_write_stream_2(t, h, o, v) \
stha_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v))
#define bus_space_write_stream_4(t, h, o, v) \
stwa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v))
#define bus_space_write_stream_8(t, h, o, v) \
stxa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v))
#else
#define bus_space_write_stream_1(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw1(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (unsigned int) v); \
stba_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_stream_2(t, h, o, v) do { \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw2(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (unsigned int) v); \
stha_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_stream_4(t, h, o, v) ({ \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw4(%llx + %llx, %x) <- %x\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (unsigned int) v); \
stwa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v)); \
} while (0)
#define bus_space_write_stream_8(t, h, o, v) ({ \
if (bus_space_debug & BSDB_ACCESS) \
printf("bsw8(%llx + %llx, %x) <- %llx\n", (u_int64_t)(h), \
(u_int64_t)(o), \
bus_stream_asi[(t)->type], (u_int64_t) v); \
stxa_nc((caddr_t)((h) + (o)), bus_stream_asi[(t)->type], (v)); \
} while (0)
#endif
/*
* void bus_space_write_multi_stream_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/offset.
*/
#define bus_space_write_multi_stream_1(t, h, o, a, c) do { \
int i = c; \
u_int8_t *p = (u_int8_t *)a; \
while (i-- > 0) \
bus_space_write_stream_1(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_stream_2(t, h, o, a, c) do { \
int i = c; \
u_int16_t *p = (u_int16_t *)a; \
while (i-- > 0) \
bus_space_write_stream_2(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_stream_4(t, h, o, a, c) do { \
int i = c; \
u_int32_t *p = (u_int32_t *)a; \
while (i-- > 0) \
bus_space_write_stream_4(t, h, o, *p++); \
} while (0)
#define bus_space_write_multi_stream_8(t, h, o, a, c) do { \
int i = c; \
u_int64_t *p = (u_int64_t *)a; \
while (i-- > 0) \
bus_space_write_stream_8(t, h, o, *p++); \
} while (0)
/*
* void bus_space_set_multi_stream_N __P((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.
*/
#define bus_space_set_multi_stream_1(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_stream_1(t, h, o, v); \
} while (0)
#define bus_space_set_multi_stream_2(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_stream_2(t, h, o, v); \
} while (0)
#define bus_space_set_multi_stream_4(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_stream_4(t, h, o, v); \
} while (0)
#define bus_space_set_multi_stream_8(t, h, o, v, c) do { \
int i = c; \
while (i-- > 0) \
bus_space_write_stream_8(t, h, o, v); \
} while (0)
/*
* void bus_space_read_region_stream_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_read_region_stream_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int8_t *,
bus_size_t));
static void bus_space_read_region_stream_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int16_t *,
bus_size_t));
static void bus_space_read_region_stream_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int32_t *,
bus_size_t));
static void bus_space_read_region_stream_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
u_int64_t *,
bus_size_t));
static __inline__ void
bus_space_read_region_stream_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int8_t *a;
{
for (; c; a++, c--, o++)
*a = bus_space_read_stream_1(t, h, o);
}
static __inline__ void
bus_space_read_region_stream_2(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int16_t *a;
{
for (; c; a++, c--, o+=2)
*a = bus_space_read_stream_2(t, h, o);
}
static __inline__ void
bus_space_read_region_stream_4(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int32_t *a;
{
for (; c; a++, c--, o+=4)
*a = bus_space_read_stream_4(t, h, o);
}
static __inline__ void
bus_space_read_region_stream_8(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
u_int64_t *a;
{
for (; c; a++, c--, o+=8)
*a = bus_space_read_stream_8(t, h, o);
}
/*
* void bus_space_write_region_stream_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_write_region_stream_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int8_t *,
bus_size_t));
static void bus_space_write_region_stream_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int16_t *,
bus_size_t));
static void bus_space_write_region_stream_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int32_t *,
bus_size_t));
static void bus_space_write_region_stream_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int64_t *,
bus_size_t));
static __inline__ void
bus_space_write_region_stream_1(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t *a;
{
for (; c; a++, c--, o++)
bus_space_write_stream_1(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_stream_2(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int16_t *a;
{
for (; c; a++, c--, o+=2)
bus_space_write_stream_2(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_stream_4(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int32_t *a;
{
for (; c; a++, c--, o+=4)
bus_space_write_stream_4(t, h, o, *a);
}
static __inline__ void
bus_space_write_region_stream_8(t, h, o, a, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int64_t *a;
{
for (; c; a++, c--, o+=8)
bus_space_write_stream_8(t, h, o, *a);
}
/*
* void bus_space_set_region_stream_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh, bus_size_t off,
* u_intN_t *addr, bus_size_t count));
*
*/
static void bus_space_set_region_stream_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int8_t,
bus_size_t));
static void bus_space_set_region_stream_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int16_t,
bus_size_t));
static void bus_space_set_region_stream_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int32_t,
bus_size_t));
static void bus_space_set_region_stream_8 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
const u_int64_t,
bus_size_t));
static __inline__ void
bus_space_set_region_stream_1(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int8_t v;
{
for (; c; c--, o++)
bus_space_write_stream_1(t, h, o, v);
}
static __inline__ void
bus_space_set_region_stream_2(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int16_t v;
{
for (; c; c--, o+=2)
bus_space_write_stream_2(t, h, o, v);
}
static __inline__ void
bus_space_set_region_stream_4(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int32_t v;
{
for (; c; c--, o+=4)
bus_space_write_stream_4(t, h, o, v);
}
static __inline__ void
bus_space_set_region_stream_8(t, h, o, v, c)
bus_space_tag_t t;
bus_space_handle_t h;
bus_size_t o, c;
const u_int64_t v;
{
for (; c; c--, o+=8)
bus_space_write_stream_8(t, h, o, v);
}
/*
* void bus_space_copy_region_stream_N __P((bus_space_tag_t tag,
* bus_space_handle_t bsh1, bus_size_t off1,
* bus_space_handle_t bsh2, bus_size_t off2,
* bus_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 void bus_space_copy_region_stream_1 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_stream_2 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_stream_4 __P((bus_space_tag_t,
bus_space_handle_t,
bus_size_t,
bus_space_handle_t,
bus_size_t,
bus_size_t));
static void bus_space_copy_region_stream_8 __P((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_stream_1(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1++, o2++)
bus_space_write_stream_1(t, h1, o1, bus_space_read_stream_1(t, h2,
o2));
}
static __inline__ void
bus_space_copy_region_stream_2(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=2, o2+=2)
bus_space_write_stream_2(t, h1, o1, bus_space_read_stream_2(t, h2,
o2));
}
static __inline__ void
bus_space_copy_region_stream_4(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=4, o2+=4)
bus_space_write_stream_4(t, h1, o1, bus_space_read_stream_4(t, h2,
o2));
}
static __inline__ void
bus_space_copy_region_stream_8(t, h1, o1, h2, o2, c)
bus_space_tag_t t;
bus_space_handle_t h1, h2;
bus_size_t o1, o2;
bus_size_t c;
{
for (; c; c--, o1+=8, o2+=8)
bus_space_write_stream_8(t, h1, o1, bus_space_read_8(t, h2, o2));
}
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
/* Back-compat functions for old ISA drivers */
extern bus_space_tag_t isa_io_bt;
extern bus_space_handle_t isa_io_hdl;
extern bus_space_tag_t isa_mem_bt;
extern bus_space_handle_t isa_mem_hdl;
#define inb(o) bus_space_read_1(isa_io_bt, isa_io_hdl, o)
#define inw(o) bus_space_read_2(isa_io_bt, isa_io_hdl, o)
#define inl(o) bus_space_read_4(isa_io_bt, isa_io_hdl, o)
#if 0
#define outb(o, v) do { \
printf("outb used at %s:%d, address 0x%x -> 0x%lx\n", \
__func__, __LINE__, o, (unsigned long)isa_io_hdl + o); \
bus_space_write_1(isa_io_bt, isa_io_hdl, o, v); \
} while (0)
#else
#define outb(o, v) bus_space_write_1(isa_io_bt, isa_io_hdl, o, v)
#endif
#define outw(o, v) bus_space_write_2(isa_io_bt, isa_io_hdl, o, v)
#define outl(o, v) bus_space_write_4(isa_io_bt, isa_io_hdl, o, v)
#define readb(o) bus_space_read_1(isa_mem_bt, isa_mem_hdl, o)
#define readw(o) bus_space_read_2(isa_mem_bt, isa_mem_hdl, o)
#define readl(o) bus_space_read_4(isa_mem_bt, isa_mem_hdl, o)
#define writeb(o, v) bus_space_write_1(isa_mem_bt, isa_mem_hdl, o, v)
#define writew(o, v) bus_space_write_2(isa_mem_bt, isa_mem_hdl, o, v)
#define writel(o, v) bus_space_write_4(isa_mem_bt, isa_mem_hdl, o, v)
#define insb(o, a, c) \
bus_space_read_multi_1(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define insw(o, a, c) \
bus_space_read_multi_2(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define insl(o, a, c) \
bus_space_read_multi_4(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define outsb(o, a, c) \
bus_space_write_multi_1(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define outsw(o, a, c) \
bus_space_write_multi_2(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define outsl(o, a, c) \
bus_space_write_multi_4(isa_io_bt, isa_io_hdl, o, (void*)a, c)
#define memcpy_fromio(d, s, c) \
bus_space_read_region_1(isa_mem_bt, isa_mem_hdl, s, d, c)
#define memcpy_toio(d, s, c) \
bus_space_write_region_1(isa_mem_bt, isa_mem_hdl, d, s, c)
#define memcpy_io(d, s, c) \
bus_space_copy_region_1(isa_mem_bt, isa_mem_hdl, s, isa_mem_hdl, d, c)
#define memset_io(d, v, c) \
bus_space_set_region_1(isa_mem_bt, isa_mem_hdl, d, v, c)
#define memsetw_io(d, v, c) \
bus_space_set_region_2(isa_mem_bt, isa_mem_hdl, d, v, c)
static __inline void
memsetw(void *d, int val, size_t size)
{
u_int16_t *sp = d;
while (size--)
*sp++ = val;
}
/* DMA support */
/*
* 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_DMAMEM_NOSYNC 0x004 /* map memory to not require sync */
#define BUS_DMA_NOWRITE 0x008
#define BUS_DMA_BUS1 0x010
#define BUS_DMA_BUS2 0x020
#define BUS_DMA_BUS3 0x040
#define BUS_DMA_BUS4 0x080
/*
* The following flags are from NetBSD, but are not implemented for all
* architetures, and should therefore not be used in MI code.
* Some have different values than under NetBSD.
*/
#define BUS_DMA_STREAMING 0x100 /* hint: sequential, unidirectional */
#define BUS_DMA_READ 0x200 /* mapping is device -> memory only */
#define BUS_DMA_WRITE 0x400 /* mapping is memory -> device only */
#define BUS_DMA_COHERENT 0x800 /* hint: map memory DMA coherent */
#define BUS_DMA_NOCACHE BUS_DMA_BUS1
/* Don't bother with alignment */
#define BUS_DMA_DVMA BUS_DMA_BUS2
/* Forwards needed by prototypes below. */
struct mbuf;
struct uio;
/*
* bus_dmasync_op_t
*
* Operations performed by bus_dmamap_sync().
*/
typedef enum {
BUS_DMASYNC_PREREAD,
BUS_DMASYNC_POSTREAD,
BUS_DMASYNC_PREWRITE,
BUS_DMASYNC_POSTWRITE,
} bus_dmasync_op_t;
/*
* A function that returns 1 if the address cannot be accessed by
* a device and 0 if it can be.
*/
typedef int bus_dma_filter_t(void *, bus_addr_t);
typedef struct bus_dma_tag *bus_dma_tag_t;
typedef struct bus_dmamap *bus_dmamap_t;
/*
* bus_dma_segment_t
*
* Describes a single contiguous DMA transaction. Values
* are suitable for programming into DMA registers.
*/
struct bus_dma_segment {
bus_addr_t ds_addr; /* DVMA address */
bus_size_t ds_len; /* length of transfer */
};
typedef struct bus_dma_segment bus_dma_segment_t;
/*
* A function that processes a successfully loaded dma map or an error
* from a delayed load map.
*/
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
/*
* bus_dma_tag_t
*
* A machine-dependent opaque type describing the implementation of
* DMA for a given bus.
*/
struct bus_dma_tag {
void *cookie; /* cookie used in the guts */
bus_dma_tag_t parent;
bus_size_t alignment;
bus_size_t boundary;
bus_addr_t lowaddr;
bus_addr_t highaddr;
bus_dma_filter_t *filter;
void *filterarg;
bus_size_t maxsize;
u_int nsegments;
bus_size_t maxsegsz;
int flags;
int ref_count;
int map_count;
/*
* DMA mapping methods.
*/
int (*dmamap_create) __P((bus_dma_tag_t, int, bus_dmamap_t *));
int (*dmamap_destroy) __P((bus_dma_tag_t, bus_dmamap_t));
int (*dmamap_load) __P((bus_dma_tag_t, bus_dmamap_t, void *,
bus_size_t, bus_dmamap_callback_t *, void *, int));
void (*dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t));
void (*dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t,
bus_dmasync_op_t));
/*
* DMA memory utility functions.
*/
int (*dmamem_alloc) __P((bus_dma_tag_t, void **, int,
bus_dmamap_t *));
void (*dmamem_free) __P((bus_dma_tag_t, void *, bus_dmamap_t));
};
/*
* XXX: This is a kluge. It would be better to handle dma tags in a hierarchical
* way, and have a BUS_GET_DMA_TAG(); however, since this is not currently the
* case, save a root tag in the relevant bus attach function and use that.
* Keep the hierarchical structure, it might become needed in the future.
*/
extern bus_dma_tag_t sparc64_root_dma_tag;
int bus_dma_tag_create(bus_dma_tag_t, bus_size_t, bus_size_t, bus_addr_t,
bus_addr_t, bus_dma_filter_t *, void *, bus_size_t, int, bus_size_t,
int, bus_dma_tag_t *);
int bus_dma_tag_destroy(bus_dma_tag_t);
int sparc64_dmamem_alloc_map(bus_dma_tag_t dmat, bus_dmamap_t *mapp);
void sparc64_dmamem_free_map(bus_dma_tag_t dmat, bus_dmamap_t map);
#define bus_dmamap_create(t, f, p) \
(*(t)->dmamap_create)((t), (f), (p))
#define bus_dmamap_destroy(t, p) \
(*(t)->dmamap_destroy)((t), (p))
#define bus_dmamap_load(t, m, p, s, cb, cba, f) \
(*(t)->dmamap_load)((t), (m), (p), (s), (cb), (cba), (f))
#define bus_dmamap_unload(t, p) \
(*(t)->dmamap_unload)((t), (p))
#define bus_dmamap_sync(t, m, op) \
(void)((t)->dmamap_sync ? \
(*(t)->dmamap_sync)((t), (m), (op)) : (void)0)
#define bus_dmamem_alloc(t, v, f, m) \
(*(t)->dmamem_alloc)((t), (v), (f), (m))
#define bus_dmamem_free(t, v, m) \
(*(t)->dmamem_free)((t), (v), (m))
/*
* bus_dmamap_t
*
* Describes a DMA mapping.
*/
struct bus_dmamap {
bus_dma_tag_t dmat;
void *buf; /* unmapped buffer pointer */
bus_size_t buflen; /* unmapped buffer length */
bus_addr_t start; /* start of mapped region */
struct resource *res; /* associated resource */
};
#endif /* !_MACHINE_BUS_H_ */