drm/i915/gem: Support discontiguous lmem object maps

Create a vmap for discontinguous lmem objects to support
i915_gem_object_pin_map().

v2: Offset io address by region.start for fake-lmem

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200102204215.1519103-1-chris@chris-wilson.co.uk

1 files changed, 0 insertions, 40 deletions

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
index 520cc9cac471..70543c83df06 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
@@ -16,46 +16,6 @@ const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
 	.release = i915_gem_object_release_memory_region,
 };
 
-/* XXX: Time to vfunc your life up? */
-void __iomem *
-i915_gem_object_lmem_io_map_page(struct drm_i915_gem_object *obj,
-				 unsigned long n)
-{
-	resource_size_t offset;
-
-	offset = i915_gem_object_get_dma_address(obj, n);
-	offset -= obj->mm.region->region.start;
-
-	return io_mapping_map_wc(&obj->mm.region->iomap, offset, PAGE_SIZE);
-}
-
-void __iomem *
-i915_gem_object_lmem_io_map_page_atomic(struct drm_i915_gem_object *obj,
-					unsigned long n)
-{
-	resource_size_t offset;
-
-	offset = i915_gem_object_get_dma_address(obj, n);
-	offset -= obj->mm.region->region.start;
-
-	return io_mapping_map_atomic_wc(&obj->mm.region->iomap, offset);
-}
-
-void __iomem *
-i915_gem_object_lmem_io_map(struct drm_i915_gem_object *obj,
-			    unsigned long n,
-			    unsigned long size)
-{
-	resource_size_t offset;
-
-	GEM_BUG_ON(!i915_gem_object_is_contiguous(obj));
-
-	offset = i915_gem_object_get_dma_address(obj, n);
-	offset -= obj->mm.region->region.start;
-
-	return io_mapping_map_wc(&obj->mm.region->iomap, offset, size);
-}
-
 bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
 {
 	return obj->ops == &i915_gem_lmem_obj_ops;