195 lines
5.5 KiB
C
195 lines
5.5 KiB
C
/*-
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* Copyright (c) 2017 Jason A. Harmening.
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _X86_BUS_DMA_H_
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#define _X86_BUS_DMA_H_
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#define WANT_INLINE_DMAMAP
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#include <sys/bus_dma.h>
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#include <sys/_null.h>
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#include <x86/busdma_impl.h>
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/*
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* Is DMA address 1:1 mapping of physical address
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*/
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static inline bool
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bus_dma_id_mapped(bus_dma_tag_t dmat, vm_paddr_t buf, bus_size_t buflen)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->id_mapped(dmat, buf, buflen));
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}
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/*
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* Allocate a handle for mapping from kva/uva/physical
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* address space into bus device space.
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*/
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static inline int
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bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->map_create(dmat, flags, mapp));
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}
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/*
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* Destroy a handle for mapping from kva/uva/physical
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* address space into bus device space.
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*/
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static inline int
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bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->map_destroy(dmat, map));
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}
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/*
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* Allocate a piece of memory that can be efficiently mapped into
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* bus device space based on the constraints lited in the dma tag.
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* A dmamap to for use with dmamap_load is also allocated.
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*/
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static inline int
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bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
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bus_dmamap_t *mapp)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp));
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}
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/*
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* Free a piece of memory and it's allociated dmamap, that was allocated
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* via bus_dmamem_alloc. Make the same choice for free/contigfree.
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*/
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static inline void
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bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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tc->impl->mem_free(dmat, vaddr, map);
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}
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/*
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* Release the mapping held by map.
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*/
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static inline void
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bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
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{
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struct bus_dma_tag_common *tc;
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if (map != NULL) {
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tc = (struct bus_dma_tag_common *)dmat;
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tc->impl->map_unload(dmat, map);
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}
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}
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static inline void
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bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
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{
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struct bus_dma_tag_common *tc;
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if (map != NULL) {
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tc = (struct bus_dma_tag_common *)dmat;
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tc->impl->map_sync(dmat, map, op);
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}
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}
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/*
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* Utility function to load a physical buffer. segp contains
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* the starting segment on entrace, and the ending segment on exit.
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*/
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static inline int
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_bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf,
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bus_size_t buflen, int flags, bus_dma_segment_t *segs, int *segp)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs,
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segp));
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}
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static inline int
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_bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma,
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bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs,
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int *segp)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags,
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segs, segp));
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}
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/*
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* Utility function to load a linear buffer. segp contains
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* the starting segment on entrace, and the ending segment on exit.
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*/
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static inline int
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_bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
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bus_size_t buflen, struct pmap *pmap, int flags, bus_dma_segment_t *segs,
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int *segp)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs,
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segp));
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}
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static inline void
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_bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
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struct memdesc *mem, bus_dmamap_callback_t *callback, void *callback_arg)
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{
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struct bus_dma_tag_common *tc;
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if (map != NULL) {
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tc = (struct bus_dma_tag_common *)dmat;
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tc->impl->map_waitok(dmat, map, mem, callback, callback_arg);
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}
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}
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static inline bus_dma_segment_t *
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_bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
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bus_dma_segment_t *segs, int nsegs, int error)
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{
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struct bus_dma_tag_common *tc;
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tc = (struct bus_dma_tag_common *)dmat;
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return (tc->impl->map_complete(dmat, map, segs, nsegs, error));
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}
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#endif /* !_X86_BUS_DMA_H_ */
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