As the GTT is outside of the powerwell, we can simplify flushing the
GGTT writes by using an unchecked mmio write and post.
v2: s/unc/uncore/
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gem_gtt.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index ca8a69e8b098..d415438d4815 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -108,22 +108,26 @@
static int
i915_get_ggtt_vma_pages(struct i915_vma *vma);
-static void gen6_ggtt_invalidate(struct drm_i915_private *dev_priv)
+static void gen6_ggtt_invalidate(struct drm_i915_private *i915)
{
+ struct intel_uncore *uncore = &i915->uncore;
+
/*
* Note that as an uncached mmio write, this will flush the
* WCB of the writes into the GGTT before it triggers the invalidate.
*/
- I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN);
+ intel_uncore_write_fw(uncore, GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN);
}
-static void guc_ggtt_invalidate(struct drm_i915_private *dev_priv)
+static void guc_ggtt_invalidate(struct drm_i915_private *i915)
{
- gen6_ggtt_invalidate(dev_priv);
- I915_WRITE(GEN8_GTCR, GEN8_GTCR_INVALIDATE);
+ struct intel_uncore *uncore = &i915->uncore;
+
+ gen6_ggtt_invalidate(i915);
+ intel_uncore_write_fw(uncore, GEN8_GTCR, GEN8_GTCR_INVALIDATE);
}
-static void gmch_ggtt_invalidate(struct drm_i915_private *dev_priv)
+static void gmch_ggtt_invalidate(struct drm_i915_private *i915)
{
intel_gtt_chipset_flush();
}
@@ -1347,10 +1351,10 @@ static void gen8_ppgtt_cleanup_4lvl(struct i915_hw_ppgtt *ppgtt)
static void gen8_ppgtt_cleanup(struct i915_address_space *vm)
{
- struct drm_i915_private *dev_priv = vm->i915;
+ struct drm_i915_private *i915 = vm->i915;
struct i915_hw_ppgtt *ppgtt = i915_vm_to_ppgtt(vm);
- if (intel_vgpu_active(dev_priv))
+ if (intel_vgpu_active(i915))
gen8_ppgtt_notify_vgt(ppgtt, false);
if (i915_vm_is_4lvl(vm))
--
2.20.1
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