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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-04-18 14:59:28 +0200 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2012-04-18 14:59:28 +0200 |
commit | 2da0777f66b08fea0767fdd7d4b20d7db17ab0d4 (patch) | |
tree | 27144cee56b9cc4b2460a7e1561a5fd23a262292 /rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h | |
parent | Hide most error number definitions (diff) | |
download | rtems-libbsd-2da0777f66b08fea0767fdd7d4b20d7db17ab0d4.tar.bz2 |
Add BUS_DMA(9) support for mbufs
Diffstat (limited to 'rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h')
-rw-r--r-- | rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h b/rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h new file mode 100644 index 00000000..e9115e42 --- /dev/null +++ b/rtemsbsd/freebsd/machine/rtems-bsd-bus-dma.h @@ -0,0 +1,85 @@ +/** + * @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 <freebsd/sys/param.h> +#include <freebsd/sys/types.h> +#include <freebsd/sys/lock.h> +#include <freebsd/sys/mutex.h> +#include <freebsd/sys/systm.h> +#include <freebsd/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_ */ |