tree b8af3af9373dd0bbcb7df30b5e5a7b66dbf98801
parent 7aeb7448d8d02868ef30a6d08e856b2220319273
author Thomas Hellstrom <thellstrom@vmware.com> 1382604566 -0700
committer Thomas Hellstrom <thellstrom@vmware.com> 1383739036 -0800

drm/vmwgfx: Use the linux DMA api to get valid device addresses of pages

The code handles three different cases:
1) physical page addresses. The ttm page array is used.
2) DMA subsystem addresses. A scatter-gather list is used.
3) Coherent pages. The ttm dma pool is used, together with the dma_ttm
array os dma_addr_t

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>