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drm/i915: Introduce i915_vm_to_ggtt()

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In a couple of places, we have an i915_address_space that we know is
really an i915_ggtt that we want to use. Create an inline helper to
convert from the i915_address_space subclass into its container.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461833819-3991-4-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-04-28 09:56:38 +01:00
parent d8dab00de9
commit ce7fda2e15
1 changed files with 11 additions and 4 deletions
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15
drivers/gpu/drm/i915/i915_gem_gtt.c
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@ -93,6 +93,13 @@
*
*/
static inline struct i915_ggtt *
i915_vm_to_ggtt(struct i915_address_space *vm)
{
GEM_BUG_ON(!i915_is_ggtt(vm));
return container_of(vm, struct i915_ggtt, base);
}
static int
i915_get_ggtt_vma_pages(struct i915_vma *vma);
@ -2365,7 +2372,7 @@ static void gen8_ggtt_insert_entries(struct i915_address_space *vm,
enum i915_cache_level level, u32 unused)
{
struct drm_i915_private *dev_priv = to_i915(vm->dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
unsigned first_entry = start >> PAGE_SHIFT;
gen8_pte_t __iomem *gtt_entries =
(gen8_pte_t __iomem *)ggtt->gsm + first_entry;
@ -2443,7 +2450,7 @@ static void gen6_ggtt_insert_entries(struct i915_address_space *vm,
enum i915_cache_level level, u32 flags)
{
struct drm_i915_private *dev_priv = to_i915(vm->dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
unsigned first_entry = start >> PAGE_SHIFT;
gen6_pte_t __iomem *gtt_entries =
(gen6_pte_t __iomem *)ggtt->gsm + first_entry;
@ -2487,7 +2494,7 @@ static void gen8_ggtt_clear_range(struct i915_address_space *vm,
bool use_scratch)
{
struct drm_i915_private *dev_priv = to_i915(vm->dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
unsigned first_entry = start >> PAGE_SHIFT;
unsigned num_entries = length >> PAGE_SHIFT;
gen8_pte_t scratch_pte, __iomem *gtt_base =
@ -2519,7 +2526,7 @@ static void gen6_ggtt_clear_range(struct i915_address_space *vm,
bool use_scratch)
{
struct drm_i915_private *dev_priv = to_i915(vm->dev);
struct i915_ggtt *ggtt = &dev_priv->ggtt;
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vm);
unsigned first_entry = start >> PAGE_SHIFT;
unsigned num_entries = length >> PAGE_SHIFT;
gen6_pte_t scratch_pte, __iomem *gtt_base =