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Lines Matching refs:ttm_dma

44  * ttm_bus_dma_populate(ttm_dma)
46  *	If ttm_dma is not already populated, wire its pages and load
54 ttm_bus_dma_populate(struct ttm_dma_tt *ttm_dma)
58 	KASSERT(ttm_dma->ttm.state == tt_unpopulated);
61 	KASSERT(!ISSET(ttm_dma->ttm.page_flags, TTM_PAGE_FLAG_SWAPPED));
63 	ttm_dma->ttm.page_flags |= TTM_PAGE_FLAG_SWAPPED;
66 	ret = ttm_tt_wire(&ttm_dma->ttm);
71 	ttm_dma->ttm.state = tt_unbound;
74 	ttm_dma->ttm.page_flags &= ~TTM_PAGE_FLAG_SWAPPED;
78 	ret = -bus_dmamap_load_pages(ttm_dma->ttm.bdev->dmat,
79 	    ttm_dma->dma_address, ttm_dma->ttm.pages,
80 	    (ttm_dma->ttm.num_pages << PAGE_SHIFT), BUS_DMA_NOWAIT);
88 	bus_dmamap_unload(ttm_dma->ttm.bdev->dmat, ttm_dma->dma_address);
89 fail1:	KASSERT(ttm_dma->ttm.state == tt_unbound);
90 	ttm_tt_unwire(&ttm_dma->ttm);
91 	ttm_dma->ttm.state = tt_unpopulated;
97 ttm_bus_dma_put(struct ttm_dma_tt *ttm_dma, int flags)
99 	struct uvm_object *const uobj = ttm_dma->ttm.swap_storage;
100 	const size_t size = (ttm_dma->ttm.num_pages << PAGE_SHIFT);
107 	KASSERTMSG((ttm_dma->ttm.state == tt_unbound),
109 	    &ttm_dma->ttm, (int)ttm_dma->ttm.state);
112 	if (!ISSET(ttm_dma->ttm.page_flags, TTM_PAGE_FLAG_SWAPPED)) {
113 		bus_dmamap_unload(ttm_dma->ttm.bdev->dmat,
114 		    ttm_dma->dma_address);
115 		ttm_tt_unwire(&ttm_dma->ttm);
116 		ttm_dma->ttm.page_flags |= TTM_PAGE_FLAG_SWAPPED;
128 	ttm_dma->ttm.state = tt_unpopulated;
132  * ttmm_bus_dma_unpopulate(ttm_dma)
135  *	associated with ttm_dma.
141 ttm_bus_dma_unpopulate(struct ttm_dma_tt *ttm_dma)
144 	ttm_bus_dma_put(ttm_dma, PGO_CLEANIT|PGO_FREE);
148  * ttm_bus_dma_swapout(ttm_dma)
151  *	associated with ttm_dma so that they can be swapped out, but
158 ttm_bus_dma_swapout(struct ttm_dma_tt *ttm_dma)
161 	ttm_bus_dma_put(ttm_dma, PGO_DEACTIVATE);