Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/i915/i915_drv.c | 2 ++
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_gem.c | 35 +++++++++++++++++++++++++++++++++++
3 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index c6e013d..49fda3e 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -676,6 +676,8 @@ int i915_reset(struct drm_device *dev, u8 flags)
if (HAS_BLT(dev))
dev_priv->ring[BCS].init(&dev_priv->ring[BCS]);
+ i915_gem_init_ppgtt(dev);
+
mutex_unlock(&dev->struct_mutex);
drm_irq_uninstall(dev);
drm_mode_config_reset(dev);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7e39392..1d54be4 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1217,6 +1217,7 @@ int __must_check i915_gem_object_set_domain(struct drm_i915_gem_object *obj,
int __must_check i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj);
int __must_check i915_gem_init_hw(struct drm_device *dev);
void i915_gem_init_swizzling(struct drm_device *dev);
+void i915_gem_init_ppgtt(struct drm_device *dev);
void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
void i915_gem_do_init(struct drm_device *dev,
unsigned long start,
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e3621ba..2a134f8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3774,6 +3774,39 @@ void i915_gem_init_swizzling(struct drm_device *dev)
DISP_TILE_SURFACE_SWIZZLING);
}
+
+void i915_gem_init_ppgtt(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ uint32_t pd_offset = dev_priv->mm.aliasing_ppgtt->pd_offset;
+ struct intel_ring_buffer *ring;
+ int i;
+
+ pd_offset /= 64; /* in cachelines, */
+ pd_offset <<= 16;
+
+ if (INTEL_INFO(dev)->gen == 6) {
+ uint32_t ecochk = I915_READ(GAM_ECOCHK);
+ I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT |
+ ECOCHK_PPGTT_CACHE64B);
+ I915_WRITE(GFX_MODE, GFX_MODE_ENABLE(GFX_PPGTT_ENABLE));
+ } else if (INTEL_INFO(dev)->gen >= 7) {
+ I915_WRITE(GAM_ECOCHK, ECOCHK_PPGTT_CACHE64B);
+ /* GFX_MODE is per-ring on gen7+ */
+ }
+
+ for (i = 0; i < I915_NUM_RINGS; i++) {
+ ring = &dev_priv->ring[i];
+
+ if (INTEL_INFO(dev)->gen >= 7)
+ I915_WRITE(RING_MODE_GEN7(ring),
+ GFX_MODE_ENABLE(GFX_PPGTT_ENABLE));
+
+ I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G);
+ I915_WRITE(RING_PP_DIR_BASE(ring), pd_offset);
+ }
+}
+
int
i915_gem_init_hw(struct drm_device *dev)
{
@@ -3800,6 +3833,8 @@ i915_gem_init_hw(struct drm_device *dev)
dev_priv->next_seqno = 1;
+ i915_gem_init_ppgtt(dev);
+
return 0;
cleanup_bsd_ring:
--
1.7.6.3
