import RT-Thread@9217865c without bsp, libcpu and components/net

components/mm/mm_private.h

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2006-2022, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2022-11-14     WangXiaoyao  the first version
+ */
+#ifndef __MM_PRIVATE_H__
+#define __MM_PRIVATE_H__
+
+#include "mm_aspace.h"
+#include <rtdef.h>
+#include <stddef.h>
+
+/**
+ * @brief DATA STRUCTURE & API USED INTERNALLY
+ *
+ * This is mainly a wrapper layer to actual data structure.
+ * In this way, we can switch to any BST we like by adding new
+ * wrapper code.
+ * Every BST must satisfy the API to support MM
+ *
+ * *INFO: varea range convention
+ * For API, a range is specified by a base and its length.
+ * This provides a clear interface without ambiguity.
+ * For implementation, a range is specified by [start, end] tuple
+ * where both start and end are inclusive.
+ */
+
+struct _mm_range
+{
+    void *start;
+    void *end;
+};
+
+/**
+ * @brief
+ *
+ * @param aspace
+ * @return rt_err_t
+ */
+rt_err_t _aspace_bst_init(struct rt_aspace *aspace);
+
+/**
+ * @brief Retrieve any varea if start in [varea->start, varea->end]
+ *
+ * @param aspace
+ * @param start
+ * @return struct rt_varea*
+ */
+struct rt_varea *_aspace_bst_search(struct rt_aspace *aspace, void *start);
+
+/**
+ * @brief Retrieve lowest varea satisfies (varea->start >= start)
+ *
+ * @param aspace
+ * @param length
+ * @param struct _mm_range
+ * @return struct rt_varea*
+ */
+struct rt_varea *_aspace_bst_search_exceed(struct rt_aspace *aspace,
+                                           void *start);
+
+/**
+ * @brief Retrieve any varea overlaps a specified address range
+ *
+ * @param aspace
+ * @param start
+ * @param length
+ * @return struct rt_varea*
+ */
+struct rt_varea *_aspace_bst_search_overlap(struct rt_aspace *aspace,
+                                            struct _mm_range range);
+
+/**
+ * @brief Insert a varea into the bst
+ *
+ * @param aspace
+ * @param varea
+ */
+void _aspace_bst_insert(struct rt_aspace *aspace, struct rt_varea *varea);
+
+/**
+ * @brief Remove a varea from the bst
+ *
+ * @param aspace
+ * @param varea
+ */
+void _aspace_bst_remove(struct rt_aspace *aspace, struct rt_varea *varea);
+
+void rt_varea_pgmgr_pop(rt_varea_t varea, void *vaddr, rt_size_t size);
+
+void rt_varea_pgmgr_pop_all(rt_varea_t varea);
+
+int _varea_map_with_msg(rt_varea_t varea, struct rt_aspace_fault_msg *msg);
+
+#endif /* __MM_PRIVATE_H__ */