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drm/i915/gtt: Refactor common ppgtt initialisation

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The basic setup of the i915_hw_ppgtt is the same between gen6 and gen8,
so refactor that into a common routine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190314223839.28258-5-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-03-14 22:38:39 +00:00
parent a9fe9ca44c
commit 2ebd000abc
1 changed files with 19 additions and 24 deletions
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43
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -1513,6 +1513,23 @@ static int gen8_preallocate_top_level_pdp(struct i915_hw_ppgtt *ppgtt)
return -ENOMEM;
}
static void ppgtt_init(struct drm_i915_private *i915,
struct i915_hw_ppgtt *ppgtt)
{
kref_init(&ppgtt->ref);
ppgtt->vm.i915 = i915;
ppgtt->vm.dma = &i915->drm.pdev->dev;
ppgtt->vm.total = BIT_ULL(INTEL_INFO(i915)->ppgtt_size);
i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
ppgtt->vm.vma_ops.bind_vma = ppgtt_bind_vma;
ppgtt->vm.vma_ops.unbind_vma = ppgtt_unbind_vma;
ppgtt->vm.vma_ops.set_pages = ppgtt_set_pages;
ppgtt->vm.vma_ops.clear_pages = clear_pages;
}
/*
* GEN8 legacy ppgtt programming is accomplished through a max 4 PDP registers
* with a net effect resembling a 2-level page table in normal x86 terms. Each
@ -1529,17 +1546,11 @@ static struct i915_hw_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
if (!ppgtt)
return ERR_PTR(-ENOMEM);
kref_init(&ppgtt->ref);
ppgtt->vm.i915 = i915;
ppgtt->vm.dma = &i915->drm.pdev->dev;
ppgtt->vm.total = BIT_ULL(INTEL_INFO(i915)->ppgtt_size);
ppgtt_init(i915, ppgtt);
/* From bdw, there is support for read-only pages in the PPGTT. */
ppgtt->vm.has_read_only = true;
i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
/* There are only few exceptions for gen >=6. chv and bxt.
* And we are not sure about the latter so play safe for now.
*/
@ -1583,11 +1594,6 @@ static struct i915_hw_ppgtt *gen8_ppgtt_create(struct drm_i915_private *i915)
ppgtt->vm.cleanup = gen8_ppgtt_cleanup;
ppgtt->vm.vma_ops.bind_vma = ppgtt_bind_vma;
ppgtt->vm.vma_ops.unbind_vma = ppgtt_unbind_vma;
ppgtt->vm.vma_ops.set_pages = ppgtt_set_pages;
ppgtt->vm.vma_ops.clear_pages = clear_pages;
return ppgtt;
err_scratch:
@ -1979,24 +1985,13 @@ static struct i915_hw_ppgtt *gen6_ppgtt_create(struct drm_i915_private *i915)
if (!ppgtt)
return ERR_PTR(-ENOMEM);
kref_init(&ppgtt->base.ref);
ppgtt->base.vm.i915 = i915;
ppgtt->base.vm.dma = &i915->drm.pdev->dev;
ppgtt->base.vm.total = BIT_ULL(INTEL_INFO(i915)->ppgtt_size);
i915_address_space_init(&ppgtt->base.vm, VM_CLASS_PPGTT);
ppgtt_init(i915, &ppgtt->base);
ppgtt->base.vm.allocate_va_range = gen6_alloc_va_range;
ppgtt->base.vm.clear_range = gen6_ppgtt_clear_range;
ppgtt->base.vm.insert_entries = gen6_ppgtt_insert_entries;
ppgtt->base.vm.cleanup = gen6_ppgtt_cleanup;
ppgtt->base.vm.vma_ops.bind_vma = ppgtt_bind_vma;
ppgtt->base.vm.vma_ops.unbind_vma = ppgtt_unbind_vma;
ppgtt->base.vm.vma_ops.set_pages = ppgtt_set_pages;
ppgtt->base.vm.vma_ops.clear_pages = clear_pages;
ppgtt->base.vm.pte_encode = ggtt->vm.pte_encode;
err = gen6_ppgtt_init_scratch(ppgtt);