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agp/intel-gtt: export the gtt pagetable iomapping

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We need this because ppgtt page directory entries need to be in the
global gtt pagetable.

Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-02-09 17:15:45 +01:00
parent 50a4c4a94d
commit 428ccb21b7
2 changed files with 3 additions and 0 deletions
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1
drivers/char/agp/intel-gtt.c
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@ -680,6 +680,7 @@ static int intel_gtt_init(void)
iounmap(intel_private.registers);
return -ENOMEM;
}
intel_private.base.gtt = intel_private.gtt;
global_cache_flush(); /* FIXME: ? */

2
include/drm/intel-gtt.h
View File

@ -17,6 +17,8 @@ const struct intel_gtt {
unsigned int do_idle_maps : 1;
/* Share the scratch page dma with ppgtts. */
dma_addr_t scratch_page_dma;
/* for ppgtt PDE access */
u32 __iomem *gtt;
} *intel_gtt_get(void);
void intel_gtt_chipset_flush(void);