drm/radeon/kms: Force HDP_NONSURF to maximum size

HDP non surface should cover the whole VRAM but we were misscomputing
the size and we endup in some case not covering the VRAM at all (if
VRAM size were > 1G). Covering more than the VRAM size shouldn't be
an issue.

Fix : https://bugs.freedesktop.org/show_bug.cgi?id=28016

[airlied: add evergreen fix]

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 38c500ee417a..37c7a434ed34 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -607,7 +607,7 @@ static void evergreen_mc_program(struct radeon_device *rdev)
         WREG32(MC_VM_FB_LOCATION, tmp);
         WREG32(HDP_NONSURFACE_BASE, (rdev->mc.vram_start >> 8));
         WREG32(HDP_NONSURFACE_INFO, (2 << 7));
-        WREG32(HDP_NONSURFACE_SIZE, (rdev->mc.mc_vram_size - 1) | 0x3FF);
+        WREG32(HDP_NONSURFACE_SIZE, 0x3FFFFFFF);
         if (rdev->flags & RADEON_IS_AGP) {
                 WREG32(MC_VM_AGP_TOP, rdev->mc.gtt_end >> 16);
                 WREG32(MC_VM_AGP_BOT, rdev->mc.gtt_start >> 16);