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drm/i915: Always set the vma->pages

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Previously, we would only set the vma->pages pointer for GGTT entries.
However, if we always set it, we can use it to prettify some code that
may want to access the backing store associated with the VMA (as
assigned to the VMA).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1471254551-25805-8-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-08-15 10:48:47 +01:00
parent 95b2ab56a5
commit 247177ddd5
3 changed files with 19 additions and 22 deletions
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8
drivers/gpu/drm/i915/i915_gem.c
View File

@ -2868,12 +2868,12 @@ int i915_vma_unbind(struct i915_vma *vma)
if (i915_vma_is_ggtt(vma)) {
if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) {
obj->map_and_fenceable = false;
} else if (vma->ggtt_view.pages) {
sg_free_table(vma->ggtt_view.pages);
kfree(vma->ggtt_view.pages);
} else if (vma->pages) {
sg_free_table(vma->pages);
kfree(vma->pages);
}
vma->ggtt_view.pages = NULL;
}
vma->pages = NULL;
/* Since the unbound list is global, only move to that list if
* no more VMAs exist. */

30
drivers/gpu/drm/i915/i915_gem_gtt.c
View File

@ -170,11 +170,13 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
{
u32 pte_flags = 0;
vma->pages = vma->obj->pages;
/* Currently applicable only to VLV */
if (vma->obj->gt_ro)
pte_flags |= PTE_READ_ONLY;
vma->vm->insert_entries(vma->vm, vma->obj->pages, vma->node.start,
vma->vm->insert_entries(vma->vm, vma->pages, vma->node.start,
cache_level, pte_flags);
return 0;
@ -2618,8 +2620,7 @@ static int ggtt_bind_vma(struct i915_vma *vma,
if (obj->gt_ro)
pte_flags |= PTE_READ_ONLY;
vma->vm->insert_entries(vma->vm, vma->ggtt_view.pages,
vma->node.start,
vma->vm->insert_entries(vma->vm, vma->pages, vma->node.start,
cache_level, pte_flags);
/*
@ -2651,8 +2652,7 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
if (flags & I915_VMA_GLOBAL_BIND) {
vma->vm->insert_entries(vma->vm,
vma->ggtt_view.pages,
vma->node.start,
vma->pages, vma->node.start,
cache_level, pte_flags);
}
@ -2660,8 +2660,7 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
struct i915_hw_ppgtt *appgtt =
to_i915(vma->vm->dev)->mm.aliasing_ppgtt;
appgtt->base.insert_entries(&appgtt->base,
vma->ggtt_view.pages,
vma->node.start,
vma->pages, vma->node.start,
cache_level, pte_flags);
}
@ -3557,28 +3556,27 @@ i915_get_ggtt_vma_pages(struct i915_vma *vma)
{
int ret = 0;
if (vma->ggtt_view.pages)
if (vma->pages)
return 0;
if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL)
vma->ggtt_view.pages = vma->obj->pages;
vma->pages = vma->obj->pages;
else if (vma->ggtt_view.type == I915_GGTT_VIEW_ROTATED)
vma->ggtt_view.pages =
vma->pages =
intel_rotate_fb_obj_pages(&vma->ggtt_view.params.rotated, vma->obj);
else if (vma->ggtt_view.type == I915_GGTT_VIEW_PARTIAL)
vma->ggtt_view.pages =
intel_partial_pages(&vma->ggtt_view, vma->obj);
vma->pages = intel_partial_pages(&vma->ggtt_view, vma->obj);
else
WARN_ONCE(1, "GGTT view %u not implemented!\n",
vma->ggtt_view.type);
if (!vma->ggtt_view.pages) {
if (!vma->pages) {
DRM_ERROR("Failed to get pages for GGTT view type %u!\n",
vma->ggtt_view.type);
ret = -EINVAL;
} else if (IS_ERR(vma->ggtt_view.pages)) {
ret = PTR_ERR(vma->ggtt_view.pages);
vma->ggtt_view.pages = NULL;
} else if (IS_ERR(vma->pages)) {
ret = PTR_ERR(vma->pages);
vma->pages = NULL;
DRM_ERROR("Failed to get pages for VMA view type %u (%d)!\n",
vma->ggtt_view.type, ret);
}

3
drivers/gpu/drm/i915/i915_gem_gtt.h
View File

@ -155,8 +155,6 @@ struct i915_ggtt_view {
} partial;
struct intel_rotation_info rotated;
} params;
struct sg_table *pages;
};
extern const struct i915_ggtt_view i915_ggtt_view_normal;
@ -176,6 +174,7 @@ struct i915_vma {
struct drm_mm_node node;
struct drm_i915_gem_object *obj;
struct i915_address_space *vm;
struct sg_table *pages;
void __iomem *iomap;
u64 size;