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drm/i915/gtt: Markup i915_ppgtt height

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This will be useful to consolidate recursive code.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712094327.24437-3-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-07-12 10:43:24 +01:00
parent a9abea9785
commit 18c7962b8c
2 changed files with 3 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -1598,6 +1598,7 @@ static struct i915_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
return ERR_PTR(-ENOMEM);
ppgtt_init(ppgtt, &i915->gt);
ppgtt->vm.top = i915_vm_is_4lvl(&ppgtt->vm) ? 3 : 2;
/*
* From bdw, there is hw support for read-only pages in the PPGTT.
@ -2084,6 +2085,7 @@ static struct i915_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915)
return ERR_PTR(-ENOMEM);
ppgtt_init(&ppgtt->base, &i915->gt);
ppgtt->base.vm.top = 1;
ppgtt->base.vm.allocate_va_range = gen6_alloc_va_range;
ppgtt->base.vm.clear_range = gen6_ppgtt_clear_range;

1
drivers/gpu/drm/i915/i915_gem_gtt.h
View File

@ -323,6 +323,7 @@ struct i915_address_space {
struct i915_page_dma scratch_pt;
struct i915_page_dma scratch_pd;
struct i915_page_dma scratch_pdp; /* GEN8+ & 48b PPGTT */
unsigned int top;
/**
* List of vma currently bound.