babefc5331
at dmamap load time that the mapping will be used for a unidirectional transfer of the specified direction.
661 lines
21 KiB
C
661 lines
21 KiB
C
/* $NetBSD: bus.h,v 1.15 2001/07/19 15:32:16 thorpej Exp $ */
|
|
|
|
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef _PMAX_BUS_H_
|
|
#define _PMAX_BUS_H_
|
|
|
|
#include <mips/locore.h>
|
|
|
|
/*
|
|
* Utility macros; do not use outside this file.
|
|
*/
|
|
#define __PB_TYPENAME_PREFIX(BITS) ___CONCAT(u_int,BITS)
|
|
#define __PB_TYPENAME(BITS) ___CONCAT(__PB_TYPENAME_PREFIX(BITS),_t)
|
|
|
|
/*
|
|
* Bus address and size types
|
|
*/
|
|
typedef u_long bus_addr_t;
|
|
typedef u_long bus_size_t;
|
|
|
|
/*
|
|
* Access methods for bus resources and address space.
|
|
*/
|
|
typedef int bus_space_tag_t;
|
|
typedef u_long bus_space_handle_t;
|
|
|
|
/*
|
|
* int bus_space_map __P((bus_space_tag_t t, bus_addr_t addr,
|
|
* bus_size_t size, int flags, bus_space_handle_t *bshp));
|
|
*
|
|
* Map a region of bus space.
|
|
*/
|
|
|
|
#define BUS_SPACE_MAP_CACHEABLE 0x01
|
|
#define BUS_SPACE_MAP_LINEAR 0x02
|
|
#define BUS_SPACE_MAP_PREFETCHABLE 0x04
|
|
|
|
int bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t,
|
|
int, bus_space_handle_t *));
|
|
|
|
/*
|
|
* void bus_space_unmap __P((bus_space_tag_t t,
|
|
* bus_space_handle_t bsh, bus_size_t size));
|
|
*
|
|
* Unmap a region of bus space.
|
|
*/
|
|
|
|
void bus_space_unmap __P((bus_space_tag_t, bus_space_handle_t, bus_size_t));
|
|
|
|
/*
|
|
* 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));
|
|
*
|
|
* Get a new handle for a subregion of an already-mapped area of bus space.
|
|
*/
|
|
|
|
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));
|
|
|
|
/*
|
|
* int bus_space_alloc __P((bus_space_tag_t t, bus_addr_t, rstart,
|
|
* bus_addr_t rend, bus_size_t size, bus_size_t align,
|
|
* bus_size_t boundary, int flags, bus_addr_t *addrp,
|
|
* bus_space_handle_t *bshp));
|
|
*
|
|
* Allocate a region of bus space.
|
|
*/
|
|
|
|
int bus_space_alloc __P((bus_space_tag_t t, bus_addr_t rstart,
|
|
bus_addr_t rend, bus_size_t size, bus_size_t align,
|
|
bus_size_t boundary, int cacheable, bus_addr_t *addrp,
|
|
bus_space_handle_t *bshp));
|
|
|
|
/*
|
|
* int bus_space_free __P((bus_space_tag_t t,
|
|
* bus_space_handle_t bsh, bus_size_t size));
|
|
*
|
|
* Free a region of bus space.
|
|
*/
|
|
|
|
void bus_space_free __P((bus_space_tag_t t, bus_space_handle_t bsh,
|
|
bus_size_t size));
|
|
|
|
/*
|
|
* void *bus_space_vaddr __P((bus_space_tag_t, bus_space_handle_t));
|
|
*
|
|
* Get the kernel virtual address for the mapped bus space.
|
|
* Only allowed for regions mapped with BUS_SPACE_MAP_LINEAR.
|
|
* (XXX not enforced)
|
|
*/
|
|
#define bus_space_vaddr(t, h) \
|
|
((void *)(h))
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#define bus_space_read_1(t, h, o) \
|
|
((void) t, (*(volatile u_int8_t *)((h) + (o))))
|
|
|
|
#define bus_space_read_2(t, h, o) \
|
|
((void) t, (*(volatile u_int16_t *)((h) + (o))))
|
|
|
|
#define bus_space_read_4(t, h, o) \
|
|
((void) t, (*(volatile u_int32_t *)((h) + (o))))
|
|
|
|
#if 0 /* Cause a link error for bus_space_read_8 */
|
|
#define bus_space_read_8(t, h, o) !!! bus_space_read_8 unimplemented !!!
|
|
#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 __PMAX_bus_space_read_multi(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_read_multi_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS) *, size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_read_multi_,BYTES)(t, h, o, a, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) *a; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) \
|
|
*a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
|
|
}
|
|
|
|
__PMAX_bus_space_read_multi(1,8)
|
|
__PMAX_bus_space_read_multi(2,16)
|
|
__PMAX_bus_space_read_multi(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_read_multi_8 */
|
|
#define bus_space_read_multi_8 !!! bus_space_read_multi_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_read_multi
|
|
|
|
/*
|
|
* 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 __PMAX_bus_space_read_region(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_read_region_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS) *, size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_read_region_,BYTES)(t, h, o, a, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) *a; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) { \
|
|
*a++ = __CONCAT(bus_space_read_,BYTES)(t, h, o); \
|
|
o += BYTES; \
|
|
} \
|
|
}
|
|
|
|
__PMAX_bus_space_read_region(1,8)
|
|
__PMAX_bus_space_read_region(2,16)
|
|
__PMAX_bus_space_read_region(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_read_region_8 */
|
|
#define bus_space_read_region_8 !!! bus_space_read_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_read_region
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#define bus_space_write_1(t, h, o, v) \
|
|
do { \
|
|
(void) t; \
|
|
*(volatile u_int8_t *)((h) + (o)) = (v); \
|
|
wbflush(); /* XXX */ \
|
|
} while (0)
|
|
|
|
#define bus_space_write_2(t, h, o, v) \
|
|
do { \
|
|
(void) t; \
|
|
*(volatile u_int16_t *)((h) + (o)) = (v); \
|
|
wbflush(); /* XXX */ \
|
|
} while (0)
|
|
|
|
#define bus_space_write_4(t, h, o, v) \
|
|
do { \
|
|
(void) t; \
|
|
*(volatile u_int32_t *)((h) + (o)) = (v); \
|
|
wbflush(); /* XXX */ \
|
|
} while (0)
|
|
|
|
#if 0 /* Cause a link error for bus_space_write_8 */
|
|
#define bus_space_write_8 !!! bus_space_write_8 not implemented !!!
|
|
#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 __PMAX_bus_space_write_multi(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_write_multi_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS) *, size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_write_multi_,BYTES)(t, h, o, a, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) *a; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
|
|
}
|
|
|
|
__PMAX_bus_space_write_multi(1,8)
|
|
__PMAX_bus_space_write_multi(2,16)
|
|
__PMAX_bus_space_write_multi(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_write_8 */
|
|
#define bus_space_write_multi_8(t, h, o, a, c) \
|
|
!!! bus_space_write_multi_8 unimplimented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_write_multi
|
|
|
|
/*
|
|
* 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'.
|
|
*/
|
|
|
|
#define __PMAX_bus_space_write_region(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_write_region_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS) *, size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_write_region_,BYTES)(t, h, o, a, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) *a; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) { \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h, o, *a++); \
|
|
o += BYTES; \
|
|
} \
|
|
}
|
|
|
|
__PMAX_bus_space_write_region(1,8)
|
|
__PMAX_bus_space_write_region(2,16)
|
|
__PMAX_bus_space_write_region(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_write_region_8 */
|
|
#define bus_space_write_region_8 \
|
|
!!! bus_space_write_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_write_region
|
|
|
|
/*
|
|
* 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 __PMAX_bus_space_set_multi(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_set_multi_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS), size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_set_multi_,BYTES)(t, h, o, v, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) v; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
|
|
}
|
|
|
|
__PMAX_bus_space_set_multi(1,8)
|
|
__PMAX_bus_space_set_multi(2,16)
|
|
__PMAX_bus_space_set_multi(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_set_multi_8 */
|
|
#define bus_space_set_multi_8 \
|
|
!!! bus_space_set_multi_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_set_multi
|
|
|
|
/*
|
|
* void bus_space_set_region_N __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh, bus_size_t offset, u_intN_t val,
|
|
* size_t count));
|
|
*
|
|
* Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
|
|
* by tag/handle starting at `offset'.
|
|
*/
|
|
|
|
#define __PMAX_bus_space_set_region(BYTES,BITS) \
|
|
static __inline void __CONCAT(bus_space_set_region_,BYTES) \
|
|
__P((bus_space_tag_t, bus_space_handle_t, bus_size_t, \
|
|
__PB_TYPENAME(BITS), size_t)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_set_region_,BYTES)(t, h, o, v, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h; \
|
|
bus_size_t o; \
|
|
__PB_TYPENAME(BITS) v; \
|
|
size_t c; \
|
|
{ \
|
|
\
|
|
while (c--) { \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h, o, v); \
|
|
o += BYTES; \
|
|
} \
|
|
}
|
|
|
|
__PMAX_bus_space_set_region(1,8)
|
|
__PMAX_bus_space_set_region(2,16)
|
|
__PMAX_bus_space_set_region(4,32)
|
|
|
|
#if 0 /* Cause a link error for bus_space_set_region_8 */
|
|
#define bus_space_set_region_8 \
|
|
!!! bus_space_set_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_bus_space_set_region
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
#define __PMAX_copy_region(BYTES) \
|
|
static __inline void __CONCAT(bus_space_copy_region_,BYTES) \
|
|
__P((bus_space_tag_t, \
|
|
bus_space_handle_t bsh1, bus_size_t off1, \
|
|
bus_space_handle_t bsh2, bus_size_t off2, \
|
|
bus_size_t count)); \
|
|
\
|
|
static __inline void \
|
|
__CONCAT(bus_space_copy_region_,BYTES)(t, h1, o1, h2, o2, c) \
|
|
bus_space_tag_t t; \
|
|
bus_space_handle_t h1, h2; \
|
|
bus_size_t o1, o2, c; \
|
|
{ \
|
|
bus_size_t o; \
|
|
\
|
|
if ((h1 + o1) >= (h2 + o2)) { \
|
|
/* src after dest: copy forward */ \
|
|
for (o = 0; c != 0; c--, o += BYTES) \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
|
|
__CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
|
|
} else { \
|
|
/* dest after src: copy backwards */ \
|
|
for (o = (c - 1) * BYTES; c != 0; c--, o -= BYTES) \
|
|
__CONCAT(bus_space_write_,BYTES)(t, h2, o2 + o, \
|
|
__CONCAT(bus_space_read_,BYTES)(t, h1, o1 + o)); \
|
|
} \
|
|
}
|
|
|
|
__PMAX_copy_region(1)
|
|
__PMAX_copy_region(2)
|
|
__PMAX_copy_region(4)
|
|
|
|
#if 0 /* Cause a link error for bus_space_copy_region_8 */
|
|
#define bus_space_copy_region_8 \
|
|
!!! bus_space_copy_region_8 unimplemented !!!
|
|
#endif
|
|
|
|
#undef __PMAX_copy_region
|
|
|
|
/*
|
|
* Bus read/write barrier methods.
|
|
*
|
|
* void bus_space_barrier __P((bus_space_tag_t tag,
|
|
* bus_space_handle_t bsh, bus_size_t offset,
|
|
* bus_size_t len, int flags));
|
|
*
|
|
* On the MIPS, we just flush the write buffer.
|
|
*/
|
|
#define bus_space_barrier(t, h, o, l, f) \
|
|
((void)((void)(t), (void)(h), (void)(o), (void)(l), (void)(f)), \
|
|
wbflush())
|
|
#define BUS_SPACE_BARRIER_READ 0x01 /* force read barrier */
|
|
#define BUS_SPACE_BARRIER_WRITE 0x02 /* force write barrier */
|
|
|
|
#undef __PB_TYPENAME_PREFIX
|
|
#undef __PB_TYPENAME
|
|
|
|
#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, 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 PMAX_DMAMAP_COHERENT 0x100 /* no cache flush necessary on sync */
|
|
|
|
/* Forwards needed by prototypes below. */
|
|
struct mbuf;
|
|
struct uio;
|
|
|
|
/*
|
|
* 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 */
|
|
|
|
typedef struct pmax_bus_dma_tag *bus_dma_tag_t;
|
|
typedef struct pmax_bus_dmamap *bus_dmamap_t;
|
|
|
|
/*
|
|
* bus_dma_segment_t
|
|
*
|
|
* Describes a single contiguous DMA transaction. Values
|
|
* are suitable for programming into DMA registers.
|
|
*/
|
|
struct pmax_bus_dma_segment {
|
|
bus_addr_t ds_addr; /* DMA address */
|
|
bus_size_t ds_len; /* length of transfer */
|
|
bus_addr_t _ds_vaddr; /* virtual address, 0 if invalid */
|
|
};
|
|
typedef struct pmax_bus_dma_segment bus_dma_segment_t;
|
|
|
|
/*
|
|
* bus_dma_tag_t
|
|
*
|
|
* A machine-dependent opaque type describing the implementation of
|
|
* DMA for a given bus.
|
|
*/
|
|
|
|
struct pmax_bus_dma_tag {
|
|
/*
|
|
* DMA mapping methods.
|
|
*/
|
|
int (*_dmamap_create) __P((bus_dma_tag_t, bus_size_t, int,
|
|
bus_size_t, bus_size_t, int, bus_dmamap_t *));
|
|
void (*_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, struct proc *, int));
|
|
int (*_dmamap_load_mbuf) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int (*_dmamap_load_uio) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int (*_dmamap_load_raw) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
void (*_dmamap_unload) __P((bus_dma_tag_t, bus_dmamap_t));
|
|
void (*_dmamap_sync) __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_addr_t, bus_size_t, int));
|
|
|
|
/*
|
|
* DMA memory utility functions.
|
|
*/
|
|
int (*_dmamem_alloc) __P((bus_dma_tag_t, bus_size_t, bus_size_t,
|
|
bus_size_t, bus_dma_segment_t *, int, int *, int));
|
|
void (*_dmamem_free) __P((bus_dma_tag_t,
|
|
bus_dma_segment_t *, int));
|
|
int (*_dmamem_map) __P((bus_dma_tag_t, bus_dma_segment_t *,
|
|
int, size_t, caddr_t *, int));
|
|
void (*_dmamem_unmap) __P((bus_dma_tag_t, caddr_t, size_t));
|
|
paddr_t (*_dmamem_mmap) __P((bus_dma_tag_t, bus_dma_segment_t *,
|
|
int, off_t, int, int));
|
|
};
|
|
|
|
#define bus_dmamap_create(t, s, n, m, b, f, p) \
|
|
(*(t)->_dmamap_create)((t), (s), (n), (m), (b), (f), (p))
|
|
#define bus_dmamap_destroy(t, p) \
|
|
(*(t)->_dmamap_destroy)((t), (p))
|
|
#define bus_dmamap_load(t, m, b, s, p, f) \
|
|
(*(t)->_dmamap_load)((t), (m), (b), (s), (p), (f))
|
|
#define bus_dmamap_load_mbuf(t, m, b, f) \
|
|
(*(t)->_dmamap_load_mbuf)((t), (m), (b), (f))
|
|
#define bus_dmamap_load_uio(t, m, u, f) \
|
|
(*(t)->_dmamap_load_uio)((t), (m), (u), (f))
|
|
#define bus_dmamap_load_raw(t, m, sg, n, s, f) \
|
|
(*(t)->_dmamap_load_raw)((t), (m), (sg), (n), (s), (f))
|
|
#define bus_dmamap_unload(t, p) \
|
|
(*(t)->_dmamap_unload)((t), (p))
|
|
#define bus_dmamap_sync(t, p, o, l, ops) \
|
|
(*(t)->_dmamap_sync)((t), (p), (o), (l), (ops))
|
|
|
|
#define bus_dmamem_alloc(t, s, a, b, sg, n, r, f) \
|
|
(*(t)->_dmamem_alloc)((t), (s), (a), (b), (sg), (n), (r), (f))
|
|
#define bus_dmamem_free(t, sg, n) \
|
|
(*(t)->_dmamem_free)((t), (sg), (n))
|
|
#define bus_dmamem_map(t, sg, n, s, k, f) \
|
|
(*(t)->_dmamem_map)((t), (sg), (n), (s), (k), (f))
|
|
#define bus_dmamem_unmap(t, k, s) \
|
|
(*(t)->_dmamem_unmap)((t), (k), (s))
|
|
#define bus_dmamem_mmap(t, sg, n, o, p, f) \
|
|
(*(t)->_dmamem_mmap)((t), (sg), (n), (o), (p), (f))
|
|
|
|
/*
|
|
* bus_dmamap_t
|
|
*
|
|
* Describes a DMA mapping.
|
|
*/
|
|
struct pmax_bus_dmamap {
|
|
/*
|
|
* PRIVATE MEMBERS: not for use my machine-independent code.
|
|
*/
|
|
bus_size_t _dm_size; /* largest DMA transfer mappable */
|
|
int _dm_segcnt; /* number of segs this map can map */
|
|
bus_size_t _dm_maxsegsz; /* largest possible segment */
|
|
bus_size_t _dm_boundary; /* don't cross this */
|
|
int _dm_flags; /* misc. flags */
|
|
|
|
/*
|
|
* PUBLIC MEMBERS: these are used by machine-independent code.
|
|
*/
|
|
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 */
|
|
};
|
|
|
|
#ifdef _PMAX_BUS_DMA_PRIVATE
|
|
int _bus_dmamap_create __P((bus_dma_tag_t, bus_size_t, int, bus_size_t,
|
|
bus_size_t, int, bus_dmamap_t *));
|
|
void _bus_dmamap_destroy __P((bus_dma_tag_t, bus_dmamap_t));
|
|
int _bus_dmamap_load __P((bus_dma_tag_t, bus_dmamap_t, void *,
|
|
bus_size_t, struct proc *, int));
|
|
int _bus_dmamap_load_mbuf __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct mbuf *, int));
|
|
int _bus_dmamap_load_uio __P((bus_dma_tag_t, bus_dmamap_t,
|
|
struct uio *, int));
|
|
int _bus_dmamap_load_raw __P((bus_dma_tag_t, bus_dmamap_t,
|
|
bus_dma_segment_t *, int, bus_size_t, int));
|
|
void _bus_dmamap_unload __P((bus_dma_tag_t, bus_dmamap_t));
|
|
void _bus_dmamap_sync __P((bus_dma_tag_t, bus_dmamap_t, bus_addr_t,
|
|
bus_size_t, int));
|
|
|
|
int _bus_dmamem_alloc __P((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 _bus_dmamem_free __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs));
|
|
int _bus_dmamem_map __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, size_t size, caddr_t *kvap, int flags));
|
|
void _bus_dmamem_unmap __P((bus_dma_tag_t tag, caddr_t kva,
|
|
size_t size));
|
|
paddr_t _bus_dmamem_mmap __P((bus_dma_tag_t tag, bus_dma_segment_t *segs,
|
|
int nsegs, off_t off, int prot, int flags));
|
|
|
|
int _bus_dmamem_alloc_range __P((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,
|
|
vaddr_t low, vaddr_t high));
|
|
|
|
extern struct pmax_bus_dma_tag pmax_default_bus_dma_tag;
|
|
#endif /* _PMAX_BUS_DMA_PRIVATE */
|
|
|
|
#endif /* !_PMAX_BUS_H_ */
|