drm/i915/ttm Initialize the ttm device and memory managers

Temporarily remove the buddy allocator and related selftests
and hook up the TTM range manager for i915 regions.

Also modify the mock region selftests somewhat to account for a
fragmenting manager.

Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210602083818.241793-2-thomas.hellstrom@linux.intel.com

1 files changed, 23 insertions, 21 deletions

diff --git a/drivers/gpu/drm/i915/intel_memory_region.h b/drivers/gpu/drm/i915/intel_memory_region.h
index d24ce5a0b30b..e69cde13daf2 100644
--- a/drivers/gpu/drm/i915/intel_memory_region.h
+++ b/drivers/gpu/drm/i915/intel_memory_region.h
@@ -13,8 +13,6 @@
 #include <drm/drm_mm.h>
 #include <drm/i915_drm.h>
 
-#include "i915_buddy.h"
-
 struct drm_i915_private;
 struct drm_i915_gem_object;
 struct intel_memory_region;
@@ -25,6 +23,7 @@ enum intel_memory_type {
 	INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE,
 	INTEL_MEMORY_STOLEN_SYSTEM,
 	INTEL_MEMORY_STOLEN_LOCAL,
+	INTEL_MEMORY_MOCK,
 };
 
 enum intel_region_id {
@@ -59,10 +58,19 @@ struct intel_memory_region_ops {
 			   unsigned int flags);
 };
 
+struct intel_memory_region_private_ops {
+	void *(*reserve)(struct intel_memory_region *mem,
+			 resource_size_t offset,
+			 resource_size_t size);
+	void (*free)(struct intel_memory_region *mem,
+		     void *node);
+};
+
 struct intel_memory_region {
 	struct drm_i915_private *i915;
 
 	const struct intel_memory_region_ops *ops;
+	const struct intel_memory_region_private_ops *priv_ops;
 
 	struct io_mapping iomap;
 	struct resource region;
@@ -70,7 +78,6 @@ struct intel_memory_region {
 	/* For fake LMEM */
 	struct drm_mm_node fake_mappable;
 
-	struct i915_buddy_mm mm;
 	struct mutex mm_lock;
 
 	struct kref kref;
@@ -95,36 +102,26 @@ struct intel_memory_region {
 		struct list_head list;
 		struct list_head purgeable;
 	} objects;
+
+	size_t chunk_size;
+	unsigned int max_order;
+	bool is_range_manager;
+
+	void *region_private;
 };
 
 struct intel_memory_region *
 intel_memory_region_lookup(struct drm_i915_private *i915,
 			   u16 class, u16 instance);
 
-int intel_memory_region_init_buddy(struct intel_memory_region *mem);
-void intel_memory_region_release_buddy(struct intel_memory_region *mem);
-
-int __intel_memory_region_get_pages_buddy(struct intel_memory_region *mem,
-					  resource_size_t size,
-					  unsigned int flags,
-					  struct list_head *blocks);
-struct i915_buddy_block *
-__intel_memory_region_get_block_buddy(struct intel_memory_region *mem,
-				      resource_size_t size,
-				      unsigned int flags);
-void __intel_memory_region_put_pages_buddy(struct intel_memory_region *mem,
-					   struct list_head *blocks);
-void __intel_memory_region_put_block_buddy(struct i915_buddy_block *block);
-
-int intel_memory_region_reserve(struct intel_memory_region *mem,
-				u64 offset, u64 size);
-
 struct intel_memory_region *
 intel_memory_region_create(struct drm_i915_private *i915,
 			   resource_size_t start,
 			   resource_size_t size,
 			   resource_size_t min_page_size,
 			   resource_size_t io_start,
+			   u16 type,
+			   u16 instance,
 			   const struct intel_memory_region_ops *ops);
 
 struct intel_memory_region *
@@ -141,4 +138,9 @@ __printf(2, 3) void
 intel_memory_region_set_name(struct intel_memory_region *mem,
 			     const char *fmt, ...);
 
+void intel_memory_region_unreserve(struct intel_memory_region *mem);
+
+int intel_memory_region_reserve(struct intel_memory_region *mem,
+				resource_size_t offset,
+				resource_size_t size);
 #endif