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ttm: Introduce a placeholder for DMA (bus) addresses.

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This is right now limited to only non-pool constructs.

[v2: Fixed indentation issues, add review-by tag]

Reviewed-by: Thomas Hellstrom <thomas@shipmail.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Ian Campbell <ian.campbell@citrix.com>
This commit is contained in:
Konrad Rzeszutek Wilk
2010-11-29 13:52:18 -05:00
parent e53beacd23
commit f9820a46dd
4 changed files with 21 additions and 7 deletions
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10
drivers/gpu/drm/ttm/ttm_tt.c
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@@ -49,12 +49,16 @@ static int ttm_tt_swapin(struct ttm_tt *ttm);
static void ttm_tt_alloc_page_directory(struct ttm_tt *ttm)
{
ttm->pages = drm_calloc_large(ttm->num_pages, sizeof(*ttm->pages));
ttm->dma_address = drm_calloc_large(ttm->num_pages,
sizeof(*ttm->dma_address));
}
static void ttm_tt_free_page_directory(struct ttm_tt *ttm)
{
drm_free_large(ttm->pages);
ttm->pages = NULL;
drm_free_large(ttm->dma_address);
ttm->dma_address = NULL;
}
static void ttm_tt_free_user_pages(struct ttm_tt *ttm)
@@ -105,7 +109,8 @@ static struct page *__ttm_tt_get_page(struct ttm_tt *ttm, int index)
INIT_LIST_HEAD(&h);
ret = ttm_get_pages(&h, ttm->page_flags, ttm->caching_state, 1);
ret = ttm_get_pages(&h, ttm->page_flags, ttm->caching_state, 1,
&ttm->dma_address[index]);
if (ret != 0)
return NULL;
@@ -298,7 +303,8 @@ static void ttm_tt_free_alloced_pages(struct ttm_tt *ttm)
count++;
}
}
ttm_put_pages(&h, count, ttm->page_flags, ttm->caching_state);
ttm_put_pages(&h, count, ttm->page_flags, ttm->caching_state,
ttm->dma_address);
ttm->state = tt_unpopulated;
ttm->first_himem_page = ttm->num_pages;
ttm->last_lomem_page = -1;