From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Thu, 24 Oct 2013 08:49:26 +0000 (-0700)
Subject: drm/vmwgfx: Use the linux DMA api to get valid device addresses of pages
X-Git-Tag: v3.13-rc1~76^2~17^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d92d985177c495aab53c7167f310a7efb1853918;p=pandora-kernel.git

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>
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