From 896ab1a5d54269b463a24194c2e4a369103b46d8 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 6 Aug 2014 15:04:51 +0200 Subject: [PATCH] drm/i915: Fix up checks for aliasing ppgtt A subsequent patch will no longer initialize the aliasing ppgtt if we have full ppgtt enabled, since we simply don't need that any more. Unfortunately a few places check for the aliasing ppgtt instead of checking for ppgtt in general. Fix them up. One special case are the gtt offset and size macros, which have some code to remap the aliasing ppgtt to the global gtt. The aliasing ppgtt is _not_ a logical address space, so passing that in as the vm is plain and simple a bug. So just WARN about it and carry on - we have a gracefully fall-through anyway if we can't find the vma. Reviewed-by: Michel Thierry Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_cmd_parser.c | 4 +--- drivers/gpu/drm/i915/i915_dma.c | 2 +- drivers/gpu/drm/i915/i915_gem.c | 8 ++------ drivers/gpu/drm/i915/intel_ringbuffer.c | 4 +--- 4 files changed, 5 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c index dea99d92fb4a..c45856bcc8b9 100644 --- a/drivers/gpu/drm/i915/i915_cmd_parser.c +++ b/drivers/gpu/drm/i915/i915_cmd_parser.c @@ -842,8 +842,6 @@ finish: */ bool i915_needs_cmd_parser(struct intel_engine_cs *ring) { - struct drm_i915_private *dev_priv = ring->dev->dev_private; - if (!ring->needs_cmd_parser) return false; @@ -852,7 +850,7 @@ bool i915_needs_cmd_parser(struct intel_engine_cs *ring) * disabled. That will cause all of the parser's PPGTT checks to * fail. For now, disable parsing when PPGTT is off. */ - if (!dev_priv->mm.aliasing_ppgtt) + if (USES_PPGTT(ring->dev)) return false; return (i915.enable_cmd_parser == 1); diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 1763fbf34e1d..895f9f2f35ea 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -999,7 +999,7 @@ static int i915_getparam(struct drm_device *dev, void *data, value = HAS_WT(dev); break; case I915_PARAM_HAS_ALIASING_PPGTT: - value = dev_priv->mm.aliasing_ppgtt || USES_FULL_PPGTT(dev); + value = USES_PPGTT(dev); break; case I915_PARAM_HAS_WAIT_TIMEOUT: value = 1; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index c8404a439502..6a7795097017 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -5106,9 +5106,7 @@ unsigned long i915_gem_obj_offset(struct drm_i915_gem_object *o, struct drm_i915_private *dev_priv = o->base.dev->dev_private; struct i915_vma *vma; - if (!dev_priv->mm.aliasing_ppgtt || - vm == &dev_priv->mm.aliasing_ppgtt->base) - vm = &dev_priv->gtt.base; + WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); list_for_each_entry(vma, &o->vma_list, vma_link) { if (vma->vm == vm) @@ -5149,9 +5147,7 @@ unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o, struct drm_i915_private *dev_priv = o->base.dev->dev_private; struct i915_vma *vma; - if (!dev_priv->mm.aliasing_ppgtt || - vm == &dev_priv->mm.aliasing_ppgtt->base) - vm = &dev_priv->gtt.base; + WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); BUG_ON(list_empty(&o->vma_list)); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 4236014c1cda..13543f8528c2 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2006,9 +2006,7 @@ gen8_ring_dispatch_execbuffer(struct intel_engine_cs *ring, u64 offset, u32 len, unsigned flags) { - struct drm_i915_private *dev_priv = ring->dev->dev_private; - bool ppgtt = dev_priv->mm.aliasing_ppgtt != NULL && - !(flags & I915_DISPATCH_SECURE); + bool ppgtt = USES_PPGTT(ring->dev) && !(flags & I915_DISPATCH_SECURE); int ret; ret = intel_ring_begin(ring, 4); -- 2.20.1