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Use the scratch page, not zero, to clear ggtt entries for gen<6.

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This commit is contained in:
riastradh 2014-05-19 14:39:33 +00:00
parent 545afccdc2
commit 5acb9c2dd2
1 changed files with 8 additions and 4 deletions
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12
sys/external/bsd/drm2/i915drm/i915_gem_gtt.c vendored
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@ -1,4 +1,4 @@
/* $NetBSD: i915_gem_gtt.c,v 1.6 2014/05/14 15:58:24 riastradh Exp $ */
/* $NetBSD: i915_gem_gtt.c,v 1.7 2014/05/19 14:39:33 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: i915_gem_gtt.c,v 1.6 2014/05/14 15:58:24 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: i915_gem_gtt.c,v 1.7 2014/05/19 14:39:33 riastradh Exp $");
#include <sys/types.h>
#include <sys/param.h>
@ -481,13 +481,17 @@ static void
agp_ggtt_clear_range(struct drm_device *dev, unsigned start_page,
unsigned npages)
{
struct drm_i915_private *const dev_priv = dev->dev_private;
struct intel_gtt *const gtt = dev_priv->mm.gtt;
const bus_addr_t addr = gtt->gtt_scratch_seg.ds_addr;
struct agp_i810_softc *const isc = agp_i810_sc->as_chipc;
unsigned page;
for (page = start_page; npages--; page++)
agp_i810_write_gtt_entry(isc, (off_t)page << PAGE_SHIFT, 0);
agp_i810_write_gtt_entry(isc, (off_t)page << PAGE_SHIFT,
(addr | 1));
agp_i810_post_gtt_entry(isc, ((page - 1) << PAGE_SHIFT));
agp_i810_post_gtt_entry(isc, ((off_t)(page - 1) << PAGE_SHIFT));
}
/*