[PATCH 32/48] drm/i915: Restore PDEs for all VMs

Ben Widawsky
2013-12-06T22:14:58Z

In following with the old restore code, we must now restore ever PPGTT's
PDEs, since they aren't proper GEM ojbects.

v2: Rebased on BDW. Only do restore pdes for gen6 & 7

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 2c93160..ea626ba 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -1035,6 +1035,7 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_gem_object *obj;
+ struct i915_address_space *vm;

i915_check_and_clear_faults(dev);

@@ -1059,8 +1060,20 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
vma->bind_vma(vma, obj->cache_level, GLOBAL_BIND);
}

- if (dev_priv->mm.aliasing_ppgtt)
- gen6_write_pdes(dev_priv->mm.aliasing_ppgtt);
+
+ if (INTEL_INFO(dev)->gen >= 8)
+ return;
+
+ list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
+ /* TODO: Perhaps it shouldn't be gen6 specific */
+ if (i915_is_ggtt(vm)) {
+ if (dev_priv->mm.aliasing_ppgtt)
+ gen6_write_pdes(dev_priv->mm.aliasing_ppgtt);
+ continue;
+ }
+
+ gen6_write_pdes(container_of(vm, struct i915_hw_ppgtt, base));
+ }

i915_gem_chipset_flush(dev);
}
--
1.8.4.2