C++ (Cpp) ttm_tt_swapin Examples

Example #1

File: ttm_tt.c Project: freedesktop-unofficial-mirror/mesa__vmwgfx

int ttm_tt_populate(struct ttm_tt *ttm)
{
	struct page *page;
	unsigned long i;
	struct ttm_backend *be;
	int ret;

	if (ttm->state != tt_unpopulated)
		return 0;

	if (unlikely(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)) {
		ret = ttm_tt_swapin(ttm);
		if (unlikely(ret != 0))
			return ret;
	}

	be = ttm->be;

	for (i = 0; i < ttm->num_pages; ++i) {
		page = __ttm_tt_get_page(ttm, i);
		if (!page)
			return -ENOMEM;
	}

	be->func->populate(be, ttm->num_pages, ttm->pages,
			   ttm->dummy_read_page);
	ttm->state = tt_unbound;
	return 0;
}

Example #2

File: ttm_bus_dma.c Project: yazshel/netbsd-kernel

int
ttm_bus_dma_populate(struct ttm_dma_tt *ttm_dma)
{
	int ret;

	/* If it's already populated, nothing to do.  */
	if (ttm_dma->ttm.state != tt_unpopulated)
		return 0;

	/* Wire the pages, allocating them if necessary.  */
	ret = ttm_tt_swapin(&ttm_dma->ttm);
	if (ret)
		goto fail0;

	/* Load the DMA map.  */
	/* XXX errno NetBSD->Linux */
	ret = -bus_dmamap_load_pglist(ttm_dma->ttm.bdev->dmat,
	    ttm_dma->dma_address, &ttm_dma->ttm.pglist,
	    (ttm_dma->ttm.num_pages << PAGE_SHIFT), BUS_DMA_NOWAIT);
	if (ret)
		goto fail1;

	/* Success!  */
	ttm_dma->ttm.state = tt_unbound;
	return 0;

fail2: __unused
	bus_dmamap_unload(ttm_dma->ttm.bdev->dmat, ttm_dma->dma_address);
fail1:	ttm_tt_swapout(&ttm_dma->ttm, NULL);
fail0:	KASSERT(ret);
	return ret;
}

Example #3

File: ttm_tt.c Project: freedesktop-unofficial-mirror/mesa__vmwgfx

struct page *ttm_tt_get_page(struct ttm_tt *ttm, int index)
{
	int ret;

	if (unlikely(ttm->page_flags & TTM_PAGE_FLAG_SWAPPED)) {
		ret = ttm_tt_swapin(ttm);
		if (unlikely(ret != 0))
			return NULL;
	}
	return __ttm_tt_get_page(ttm, index);
}