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authorBen Widawsky <ben@bwidawsk.net>2012-11-04 09:21:27 -0800
committerDaniel Vetter <daniel.vetter@ffwll.ch>2012-11-11 23:51:42 +0100
commite76e9aebcdbfebae8f4cd147e3c0f800d36e97f3 (patch)
tree94272c5f3ee021931bfe43136d81076b10a26c77 /drivers/char/agp
parentb3fcabb15bb83202fb5e4e5b296711b91c4942a3 (diff)
downloadop-kernel-dev-e76e9aebcdbfebae8f4cd147e3c0f800d36e97f3.zip
op-kernel-dev-e76e9aebcdbfebae8f4cd147e3c0f800d36e97f3.tar.gz
drm/i915: Stop using AGP layer for GEN6+
As a quick hack we make the old intel_gtt structure mutable so we can fool a bunch of the existing code which depends on elements in that data structure. We can/should try to remove this in a subsequent patch. This should preserve the old gtt init behavior which upon writing these patches seems incorrect. The next patch will fix these things. The one exception is VLV which doesn't have the preserved flush control write behavior. Since we want to do that for all GEN6+ stuff, we'll handle that in a later patch. Mainstream VLV support doesn't actually exist yet anyway. v2: Update the comment to remove the "voodoo" Check that the last pte written matches what we readback v3: actually kill cache_level_to_agp_type since most of the flags will disappear in an upcoming patch v4: v3 was actually not what we wanted (Daniel) Make the ggtt bind assertions better and stricter (Chris) Fix some uncaught errors at gtt init (Chris) Some other random stuff that Chris wanted v5: check for i==0 in gen6_ggtt_bind_object to shut up gcc (Ben) Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by [v4]: Chris Wilson <chris@chris-wilson.co.uk> [danvet: Make the cache_level -> agp_flags conversion for pre-gen6 a tad more robust by mapping everything != CACHE_NONE to the cached agp flag - we have a 1:1 uncached mapping, but different modes of cacheable (at least on later generations). Suggested by Chris Wilson.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/char/agp')
-rw-r--r--drivers/char/agp/intel-gtt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index 38390f7..4dfbb80 100644
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -1686,7 +1686,7 @@ int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
}
EXPORT_SYMBOL(intel_gmch_probe);
-const struct intel_gtt *intel_gtt_get(void)
+struct intel_gtt *intel_gtt_get(void)
{
return &intel_private.base;
}
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