mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-05-14 01:10:15 +08:00
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/**
|
|
* @file
|
|
*
|
|
* @ingroup rtems_bsd_machine
|
|
*
|
|
* @brief TODO.
|
|
*
|
|
* File origin from FreeBSD "sys/powerpc/powerpc/busdma_machdep.c".
|
|
*/
|
|
|
|
/*-
|
|
* Copyright (c) 2009-2012 embedded brains GmbH. All rights reserved.
|
|
*
|
|
* embedded brains GmbH
|
|
* Obere Lagerstr. 30
|
|
* 82178 Puchheim
|
|
* Germany
|
|
* <rtems@embedded-brains.de>
|
|
*
|
|
* Copyright (c) 2004 Olivier Houchard
|
|
* Copyright (c) 2002 Peter Grehan
|
|
* Copyright (c) 1997, 1998 Justin T. Gibbs.
|
|
* 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,
|
|
* without modification, immediately at the beginning of the file.
|
|
* 2. 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 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 AUTHOR 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 _RTEMS_BSD_MACHINE_RTEMS_BSD_BUS_DMA_H_
|
|
#define _RTEMS_BSD_MACHINE_RTEMS_BSD_BUS_DMA_H_
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/systm.h>
|
|
#include <machine/bus.h>
|
|
|
|
struct bus_dma_tag {
|
|
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;
|
|
int nsegments;
|
|
bus_size_t maxsegsz;
|
|
int flags;
|
|
int ref_count;
|
|
int map_count;
|
|
bus_dma_lock_t *lockfunc;
|
|
void *lockfuncarg;
|
|
};
|
|
|
|
struct bus_dmamap {
|
|
void *buffer_begin;
|
|
bus_size_t buffer_size;
|
|
};
|
|
|
|
int
|
|
bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dma_segment_t segs[],
|
|
void *buf, bus_size_t buflen, struct thread *td, int flags,
|
|
vm_offset_t *lastaddrp, int *segp, int first);
|
|
|
|
#endif /* _RTEMS_BSD_MACHINE_RTEMS_BSD_BUS_DMA_H_ */
|