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Subject[PATCH v2 5/8] drm/i915: limit ttm to dma32 for i965G[M]
Date
i965G[M] cannot relocate objects above 4GiB.
Ensure ttm uses dma32 on these systems.

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
---
drivers/gpu/drm/i915/intel_region_ttm.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_region_ttm.c b/drivers/gpu/drm/i915/intel_region_ttm.c
index 62ff77445b01..fd2ecfdd8fa1 100644
--- a/drivers/gpu/drm/i915/intel_region_ttm.c
+++ b/drivers/gpu/drm/i915/intel_region_ttm.c
@@ -32,10 +32,15 @@
int intel_region_ttm_device_init(struct drm_i915_private *dev_priv)
{
struct drm_device *drm = &dev_priv->drm;
+ bool use_dma32 = false;
+
+ /* i965g[m] cannot relocate objects above 4GiB. */
+ if (IS_I965GM(dev_priv) || IS_I965G(dev_priv))
+ use_dma32 = true;

return ttm_device_init(&dev_priv->bdev, i915_ttm_driver(),
drm->dev, drm->anon_inode->i_mapping,
- drm->vma_offset_manager, false, false);
+ drm->vma_offset_manager, false, use_dma32);
}

/**
--
2.25.1
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