fe461235a2
map. Use this new feature to implement iommu_dvmamap_load_mbuf() and iommu_dvmamap_load_uio() functions in terms of a new helper function, iommu_dvmamap_load_buffer(). Reimplement the iommu_dvmamap_load() to use it, too. This requires some changes to the map format; in addition to that, remove unused or redundant members. Add SBus and Psycho wrappers for the new functions, and make them available through the respective DMA tags.
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*-
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* Copyright (c) 1997, 1998 Justin T. Gibbs.
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* Copyright (c) 2002 by Thomas Moestl <tmm@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: FreeBSD: src/sys/i386/i386/busdma_machdep.c,v 1.25 2002/01/05
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_BUS_PRIVATE_H_
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#define _MACHINE_BUS_PRIVATE_H_
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#include <sys/queue.h>
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#define BUS_DMAMAP_NSEGS ((BUS_SPACE_MAXSIZE / PAGE_SIZE) + 1)
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struct bus_dmamap_res {
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struct resource *dr_res;
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bus_size_t dr_used;
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SLIST_ENTRY(bus_dmamap_res) dr_link;
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};
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struct bus_dmamap {
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TAILQ_ENTRY(bus_dmamap) dm_maplruq;
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SLIST_HEAD(, bus_dmamap_res) dm_reslist;
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int dm_onq;
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int dm_loaded;
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};
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static __inline void
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sparc64_dmamap_init(struct bus_dmamap *m)
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{
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SLIST_INIT(&m->dm_reslist);
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}
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#endif /* !_MACHINE_BUS_PRIVATE_H_ */
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