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, 32 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_region_ttm.h b/drivers/gpu/drm/i915/intel_region_ttm.h
new file mode 100644
index 000000000000..1c82c6c3429d
--- /dev/null
+++ b/drivers/gpu/drm/i915/intel_region_ttm.h
@@ -0,0 +1,32 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+#ifndef _INTEL_REGION_TTM_H_
+#define _INTEL_REGION_TTM_H_
+
+#include <linux/types.h>
+
+#include "i915_selftest.h"
+
+struct drm_i915_private;
+struct intel_memory_region;
+
+int intel_region_ttm_device_init(struct drm_i915_private *dev_priv);
+
+void intel_region_ttm_device_fini(struct drm_i915_private *dev_priv);
+
+int intel_region_ttm_init(struct intel_memory_region *mem);
+
+void intel_region_ttm_fini(struct intel_memory_region *mem);
+
+struct sg_table *intel_region_ttm_node_to_st(struct intel_memory_region *mem,
+					     void *node);
+
+void *intel_region_ttm_node_alloc(struct intel_memory_region *mem,
+				  resource_size_t size,
+				  unsigned int flags);
+
+void intel_region_ttm_node_free(struct intel_memory_region *mem,
+				void *node);
+#endif /* _INTEL_REGION_TTM_H_ */