1 files changed, 55 insertions, 0 deletions
diff --git a/common/include/uapi/gpu/arm/midgard/platform/pixel/pixel_memory_group_manager.h b/common/include/uapi/gpu/arm/midgard/platform/pixel/pixel_memory_group_manager.h
new file mode 100644
index 0000000..b575c79
--- /dev/null
+++ b/common/include/uapi/gpu/arm/midgard/platform/pixel/pixel_memory_group_manager.h
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2022-2023 Google LLC.
+ *
+ * Author: Jack Diver <diverj@google.com>
+ */
+#ifndef _UAPI_PIXEL_MEMORY_GROUP_MANAGER_H_
+#define _UAPI_PIXEL_MEMORY_GROUP_MANAGER_H_
+
+/**
+ * enum pixel_mgm_group_id - Symbolic names for used memory groups
+ */
+enum pixel_mgm_group_id
+{
+	/* The Mali driver requires that allocations made on one of the groups
+	 * are not treated specially.
+	 */
+	MGM_RESERVED_GROUP_ID = 0,
+
+	/* Group for memory that should be cached in the system level cache. */
+	MGM_SLC_GROUP_ID = 1,
+
+	/* Group for memory explicitly allocated in SLC. */
+	MGM_SLC_EXPLICIT_GROUP_ID = 2,
+
+	/* Imported memory is handled by the allocator of the memory, and the Mali
+	 * DDK will request a group_id for such memory via mgm_get_import_memory_id().
+	 * We specify which group we want to use for this here.
+	 */
+	MGM_IMPORTED_MEMORY_GROUP_ID = (MEMORY_GROUP_MANAGER_NR_GROUPS - 1),
+};
+
+/**
+ * pixel_mgm_query_group_size - Query the current size of a memory group
+ *
+ * @mgm_dev:   The memory group manager through which the request is being made.
+ * @group_id:  Memory group to query.
+ *
+ * Returns the actual size of the memory group's active partition
+ */
+extern u64 pixel_mgm_query_group_size(struct memory_group_manager_device* mgm_dev,
+                                      enum pixel_mgm_group_id group_id);
+
+/**
+ * pixel_mgm_resize_group_to_fit - Resize a memory group to meet @demand, if possible
+ *
+ * @mgm_dev:   The memory group manager through which the request is being made.
+ * @group_id:  Memory group for which we will change the backing partition.
+ * @demand:    The demanded space from the memory group.
+ */
+extern void pixel_mgm_resize_group_to_fit(struct memory_group_manager_device* mgm_dev,
+                                          enum pixel_mgm_group_id group_id,
+                                          u64 demand);
+
+#endif /* _UAPI_PIXEL_MEMORY_GROUP_MANAGER_H_ */