Differential D10729 Diff 29942 sys/x86/x86/busdma_machdep.c

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sys/x86/x86/busdma_machdep.c

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	bus_dma_tag_destroy(bus_dma_tag_t dmat)			bus_dma_tag_destroy(bus_dma_tag_t dmat)
	{			{
	struct bus_dma_tag_common *tc;			struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;			tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->tag_destroy(dmat));			return (tc->impl->tag_destroy(dmat));
	}			}

	/*
	* Allocate a handle for mapping from kva/uva/physical
	* address space into bus device space.
	*/
	int
	bus_dmamap_create(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp)
	{
	struct bus_dma_tag_common *tc;

	WITNESS_WARN(WARN_GIANTOK \| WARN_SLEEPOK, NULL, "%s", __func__);

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->map_create(dmat, flags, mapp));
	}

	/*
	* Destroy a handle for mapping from kva/uva/physical
	* address space into bus device space.
	*/
	int
	bus_dmamap_destroy(bus_dma_tag_t dmat, bus_dmamap_t map)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->map_destroy(dmat, map));
	}


	/*
	* Allocate a piece of memory that can be efficiently mapped into
	* bus device space based on the constraints lited in the dma tag.
	* A dmamap to for use with dmamap_load is also allocated.
	*/
	int
	bus_dmamem_alloc(bus_dma_tag_t dmat, void** vaddr, int flags,
	bus_dmamap_t *mapp)
	{
	struct bus_dma_tag_common *tc;

	WITNESS_WARN(WARN_GIANTOK \| WARN_SLEEPOK, NULL, "%s", __func__);

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->mem_alloc(dmat, vaddr, flags, mapp));
	}

	/*
	* Free a piece of memory and it's allociated dmamap, that was allocated
	* via bus_dmamem_alloc. Make the same choice for free/contigfree.
	*/
	void
	bus_dmamem_free(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	tc->impl->mem_free(dmat, vaddr, map);
	}

	/*
	* Utility function to load a physical buffer. segp contains
	* the starting segment on entrace, and the ending segment on exit.
	*/
	int
	_bus_dmamap_load_phys(bus_dma_tag_t dmat, bus_dmamap_t map, vm_paddr_t buf,
	bus_size_t buflen, int flags, bus_dma_segment_t segs, int segp)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->load_phys(dmat, map, buf, buflen, flags, segs,
	segp));
	}

	int
	_bus_dmamap_load_ma(bus_dma_tag_t dmat, bus_dmamap_t map, struct vm_page **ma,
	bus_size_t tlen, int ma_offs, int flags, bus_dma_segment_t *segs,
	int *segp)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->load_ma(dmat, map, ma, tlen, ma_offs, flags,
	segs, segp));
	}

	/*
	* Utility function to load a linear buffer. segp contains
	* the starting segment on entrace, and the ending segment on exit.
	*/
	int
	_bus_dmamap_load_buffer(bus_dma_tag_t dmat, bus_dmamap_t map, void *buf,
	bus_size_t buflen, pmap_t pmap, int flags, bus_dma_segment_t *segs,
	int *segp)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->load_buffer(dmat, map, buf, buflen, pmap, flags, segs,
	segp));
	}

	void
	__bus_dmamap_waitok(bus_dma_tag_t dmat, bus_dmamap_t map,
	struct memdesc mem, bus_dmamap_callback_t callback, void *callback_arg)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	tc->impl->map_waitok(dmat, map, mem, callback, callback_arg);
	}

	bus_dma_segment_t *
	_bus_dmamap_complete(bus_dma_tag_t dmat, bus_dmamap_t map,
	bus_dma_segment_t *segs, int nsegs, int error)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	return (tc->impl->map_complete(dmat, map, segs, nsegs, error));
	}

	/*
	* Release the mapping held by map.
	*/
	void
	_bus_dmamap_unload(bus_dma_tag_t dmat, bus_dmamap_t map)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	tc->impl->map_unload(dmat, map);
	}

	void
	_bus_dmamap_sync(bus_dma_tag_t dmat, bus_dmamap_t map, bus_dmasync_op_t op)
	{
	struct bus_dma_tag_common *tc;

	tc = (struct bus_dma_tag_common *)dmat;
	tc->impl->map_sync(dmat, map, op);
	}