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drm/i915: Cleaning up the relocate entry function 

As the relocate entry function was getting a bit too big I've moved
the code that used to use either the cpu or the gtt to for the
relocation into two separate functions.

Signed-off-by: Rafael Barbalho <rafael.barbalho@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rafael Barbalho 2013-08-21 17:10:51 +01:00 committed by Daniel Vetter
parent 1403c0d4d4
commit 5032d871f7
1 changed files with 54 additions and 34 deletions
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88
drivers/gpu/drm/i915/i915_gem_execbuffer.c
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@ -171,6 +171,56 @@ static inline int use_cpu_reloc(struct drm_i915_gem_object *obj)
obj->cache_level != I915_CACHE_NONE);
}
static int
relocate_entry_cpu(struct drm_i915_gem_object *obj,
struct drm_i915_gem_relocation_entry *reloc)
{
uint32_t page_offset = offset_in_page(reloc->offset);
char *vaddr;
int ret = -EINVAL;
ret = i915_gem_object_set_to_cpu_domain(obj, 1);
if (ret)
return ret;
vaddr = kmap_atomic(i915_gem_object_get_page(obj,
reloc->offset >> PAGE_SHIFT));
*(uint32_t *)(vaddr + page_offset) = reloc->delta;
kunmap_atomic(vaddr);
return 0;
}
static int
relocate_entry_gtt(struct drm_i915_gem_object *obj,
struct drm_i915_gem_relocation_entry *reloc)
{
struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t __iomem *reloc_entry;
void __iomem *reloc_page;
int ret = -EINVAL;
ret = i915_gem_object_set_to_gtt_domain(obj, true);
if (ret)
return ret;
ret = i915_gem_object_put_fence(obj);
if (ret)
return ret;
/* Map the page containing the relocation we're going to perform. */
reloc->offset += i915_gem_obj_ggtt_offset(obj);
reloc_page = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
reloc->offset & PAGE_MASK);
reloc_entry = (uint32_t __iomem *)
(reloc_page + offset_in_page(reloc->offset));
iowrite32(reloc->delta, reloc_entry);
io_mapping_unmap_atomic(reloc_page);
return 0;
}
static int
i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
struct eb_objects *eb,
@ -255,40 +305,10 @@ i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj,
return -EFAULT;
reloc->delta += target_offset;
if (use_cpu_reloc(obj)) {
uint32_t page_offset = offset_in_page(reloc->offset);
char *vaddr;
ret = i915_gem_object_set_to_cpu_domain(obj, 1);
if (ret)
return ret;
vaddr = kmap_atomic(i915_gem_object_get_page(obj,
reloc->offset >> PAGE_SHIFT));
*(uint32_t *)(vaddr + page_offset) = reloc->delta;
kunmap_atomic(vaddr);
} else {
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t __iomem *reloc_entry;
void __iomem *reloc_page;
ret = i915_gem_object_set_to_gtt_domain(obj, true);
if (ret)
return ret;
ret = i915_gem_object_put_fence(obj);
if (ret)
return ret;
/* Map the page containing the relocation we're going to perform. */
reloc->offset += i915_gem_obj_ggtt_offset(obj);
reloc_page = io_mapping_map_atomic_wc(dev_priv->gtt.mappable,
reloc->offset & PAGE_MASK);
reloc_entry = (uint32_t __iomem *)
(reloc_page + offset_in_page(reloc->offset));
iowrite32(reloc->delta, reloc_entry);
io_mapping_unmap_atomic(reloc_page);
}
if (use_cpu_reloc(obj))
ret = relocate_entry_cpu(obj, reloc);
else
ret = relocate_entry_gtt(obj, reloc);
/* and update the user's relocation entry */
reloc->presumed_offset = target_offset;