agp/intel-gtt: export the gtt pagetable iomapping
We need this because ppgtt page directory entries need to be in the
global gtt pagetable.
Reviewed-by: Ben Widawsky <[email protected]>
Tested-by: Chris Wilson <[email protected]>
Tested-by: Eugeni Dodonov <[email protected]>
Reviewed-by: Eugeni Dodonov <[email protected]>
Signed-Off-by: Daniel Vetter <[email protected]>
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 0a305ac..5cf47ac 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -680,6 +680,7 @@
iounmap(intel_private.registers);
return -ENOMEM;
}
+ intel_private.base.gtt = intel_private.gtt;
global_cache_flush(); /* FIXME: ? */
diff --git a/include/drm/intel-gtt.h b/include/drm/intel-gtt.h
index 6d4c77a..0a0001b 100644
--- a/include/drm/intel-gtt.h
+++ b/include/drm/intel-gtt.h
@@ -17,6 +17,8 @@
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);
