80938e75f0
vm_pages. Provide trivial implementation which forwards the load to _bus_dmamap_load_phys() page by page. Right now all architectures use bus_dmamap_load_ma_triv(). Tested by: pho (as part of the functional patch) Sponsored by: The FreeBSD Foundation MFC after: 1 month
153 lines
6.4 KiB
C
153 lines
6.4 KiB
C
/*-
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* Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1997-1999 Eduardo E. Horvath. All rights reserved.
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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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 BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: NetBSD: bus.h,v 1.58 2008/04/28 20:23:36 martin Exp
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* and
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* from: FreeBSD: src/sys/alpha/include/bus.h,v 1.9 2001/01/09
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*
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* $FreeBSD$
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*/
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#ifndef _SPARC64_BUS_DMA_H
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#define _SPARC64_BUS_DMA_H
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#include <sys/bus_dma.h>
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/* DMA support */
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/*
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* Method table for a bus_dma_tag.
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*/
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struct bus_dma_methods {
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int (*dm_dmamap_create)(bus_dma_tag_t, int, bus_dmamap_t *);
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int (*dm_dmamap_destroy)(bus_dma_tag_t, bus_dmamap_t);
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int (*dm_dmamap_load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map,
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vm_paddr_t buf, bus_size_t buflen, int flags,
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bus_dma_segment_t *segs, int *segp);
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int (*dm_dmamap_load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map,
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void *buf, bus_size_t buflen, struct pmap *pmap, int flags,
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bus_dma_segment_t *segs, int *segp);
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void (*dm_dmamap_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map,
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struct memdesc *mem, bus_dmamap_callback_t *callback,
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void *callback_arg);
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bus_dma_segment_t *(*dm_dmamap_complete)(bus_dma_tag_t dmat,
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bus_dmamap_t map, bus_dma_segment_t *segs, int nsegs, int error);
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void (*dm_dmamap_unload)(bus_dma_tag_t, bus_dmamap_t);
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void (*dm_dmamap_sync)(bus_dma_tag_t, bus_dmamap_t,
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bus_dmasync_op_t);
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int (*dm_dmamem_alloc)(bus_dma_tag_t, void **, int, bus_dmamap_t *);
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void (*dm_dmamem_free)(bus_dma_tag_t, void *, bus_dmamap_t);
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};
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/*
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* bus_dma_tag_t
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*
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* A machine-dependent opaque type describing the implementation of
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* DMA for a given bus.
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*/
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struct bus_dma_tag {
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void *dt_cookie; /* cookie used in the guts */
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bus_dma_tag_t dt_parent;
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bus_size_t dt_alignment;
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bus_addr_t dt_boundary;
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bus_addr_t dt_lowaddr;
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bus_addr_t dt_highaddr;
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bus_dma_filter_t *dt_filter;
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void *dt_filterarg;
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bus_size_t dt_maxsize;
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int dt_nsegments;
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bus_size_t dt_maxsegsz;
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int dt_flags;
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int dt_ref_count;
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int dt_map_count;
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bus_dma_lock_t *dt_lockfunc;
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void * *dt_lockfuncarg;
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bus_dma_segment_t *dt_segments;
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struct bus_dma_methods *dt_mt;
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};
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#define bus_dmamap_create(t, f, p) \
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((t)->dt_mt->dm_dmamap_create((t), (f), (p)))
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#define bus_dmamap_destroy(t, p) \
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((t)->dt_mt->dm_dmamap_destroy((t), (p)))
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#define _bus_dmamap_load_phys(t, m, b, l, f, s, sp) \
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((t)->dt_mt->dm_dmamap_load_phys((t), (m), (b), (l), \
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(f), (s), (sp)))
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#define _bus_dmamap_load_buffer(t, m, b, l, p, f, s, sp) \
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((t)->dt_mt->dm_dmamap_load_buffer((t), (m), (b), (l), (p), \
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(f), (s), (sp)))
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#define _bus_dmamap_waitok(t, m, mem, c, ca) \
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((t)->dt_mt->dm_dmamap_waitok((t), (m), (mem), (c), (ca)))
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#define _bus_dmamap_complete(t, m, s, n, e) \
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((t)->dt_mt->dm_dmamap_complete((t), (m), (s), (n), (e)))
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#define bus_dmamap_unload(t, p) \
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((t)->dt_mt->dm_dmamap_unload((t), (p)))
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#define bus_dmamap_sync(t, m, op) \
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((t)->dt_mt->dm_dmamap_sync((t), (m), (op)))
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#define bus_dmamem_alloc(t, v, f, m) \
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((t)->dt_mt->dm_dmamem_alloc((t), (v), (f), (m)))
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#define bus_dmamem_free(t, v, m) \
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((t)->dt_mt->dm_dmamem_free((t), (v), (m)))
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#define _bus_dmamap_load_ma(t, m, a, tt, o, f, s, p) \
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bus_dmamap_load_ma_triv((t), (m), (a), (tt), (o), (f), (s), (p))
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#endif /* !_SPARC64_BUS_DMA_H_ */
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