gma500: Add a gtt allocator

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At the moment we don't do any page backing for the GTT so only the stolen
area pages will actually work. That is fine for our initial framebuffer and
a bit of testing but will need resolution (including alternate mmap methods
and the like for s/g areas) eventually.

Rather than use some of the overcomplex stuff in the DRM we use the existing
Linux resource allocators to hand out framebuffers and the like. This also has
the nice result that /proc/iomem shows the allocations.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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This commit is contained in:

Alan Cox 2011-04-13 10:37:03 +01:00 • committed by Greg Kroah-Hartman

parent 36207d1167

commit 8d9c134c6e

5 changed files with 217 additions and 29 deletions

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16

drivers/staging/gma500/psb_drv.h

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32

drivers/staging/gma500/psb_fb.c

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13

drivers/staging/gma500/psb_fb.h

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155

drivers/staging/gma500/psb_gtt.c

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30

drivers/staging/gma500/psb_gtt.h

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