X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/48b4a227035048fdebcd32532deb7a857c6199ac..f09e806d5032150564df39a2f7b1192c4d84cf15:/lunaix-os/includes/lunaix/mm/pmm.h

diff --git a/lunaix-os/includes/lunaix/mm/pmm.h b/lunaix-os/includes/lunaix/mm/pmm.h
index d45af82..8141113 100644
--- a/lunaix-os/includes/lunaix/mm/pmm.h
+++ b/lunaix-os/includes/lunaix/mm/pmm.h
@@ -2,90 +2,111 @@
 #define __LUNAIX_PMM_H
 // Physical memory manager
 
-#include <stdint.h>
-#include <stddef.h>
 #include <lunaix/process.h>
+#include <stddef.h>
+#include <stdint.h>
 
-#define PM_PAGE_SIZE            4096
-#define PM_BMP_MAX_SIZE        (1024 * 1024)
+#define PM_PAGE_SIZE 4096
+#define PM_BMP_MAX_SIZE (1024 * 1024)
 
+/**
+ * @brief 长久页：不会被缓存，但允许释放
+ *
+ */
+#define PP_FGPERSIST 0x1
 
-#define PP_FGPERSIST            0x1
+/**
+ * @brief 锁定页：不会被缓存，不能被释放
+ *
+ */
+#define PP_FGLOCKED 0x2
 
-typedef uint32_t pp_attr_t;
+typedef u32_t pp_attr_t;
 
-struct pp_struct {
+struct pp_struct
+{
     pid_t owner;
-    uint32_t ref_counts;
+    u32_t ref_counts;
     pp_attr_t attr;
 };
 
 /**
  * @brief 标注物理页为可使用
- * 
+ *
  * @param ppn page number
  */
-void pmm_mark_page_free(uintptr_t ppn);
+void
+pmm_mark_page_free(ptr_t ppn);
 
 /**
  * @brief 标注物理页为已占用
- * 
- * @param ppn 
+ *
+ * @param ppn
  */
-void pmm_mark_page_occupied(pid_t owner, uintptr_t ppn, pp_attr_t attr);
+void
+pmm_mark_page_occupied(pid_t owner, ptr_t ppn, pp_attr_t attr);
 
 /**
  * @brief 标注多个连续的物理页为可用
- * 
+ *
  * @param start_ppn 起始PPN
  * @param page_count 数量
  */
-void pmm_mark_chunk_free(uintptr_t start_ppn, size_t page_count);
+void
+pmm_mark_chunk_free(ptr_t start_ppn, size_t page_count);
 
 /**
  * @brief 标注多个连续的物理页为已占用
- * 
+ *
  * @param start_ppn 起始PPN
  * @param page_count 数量
  */
-void pmm_mark_chunk_occupied(pid_t owner, uintptr_t start_ppn, size_t page_count, pp_attr_t attr);
+void
+pmm_mark_chunk_occupied(pid_t owner,
+                        u32_t start_ppn,
+                        size_t page_count,
+                        pp_attr_t attr);
 
 /**
  * @brief 分配一个可用的物理页
- * 
+ *
  * @return void* 可用的页地址，否则为 NULL
  */
-void* pmm_alloc_page(pid_t owner, pp_attr_t attr);
+ptr_t
+pmm_alloc_page(pid_t owner, pp_attr_t attr);
 
 /**
  * @brief 分配一个连续的物理内存区域
- * 
- * @param owner 
+ *
+ * @param owner
  * @param num_pages 区域大小，单位为页
- * @param attr 
- * @return void* 
+ * @param attr
+ * @return ptr_t
  */
-void*
+ptr_t
 pmm_alloc_cpage(pid_t owner, size_t num_pages, pp_attr_t attr);
 
 /**
  * @brief 初始化物理内存管理器
- * 
+ *
  * @param mem_upper_lim 最大可用内存地址
  */
-void pmm_init(uintptr_t mem_upper_lim);
+void
+pmm_init(ptr_t mem_upper_lim);
 
-struct pp_struct* pmm_query(void* pa);
+struct pp_struct*
+pmm_query(ptr_t pa);
 
 /**
  * @brief 释放一个已分配的物理页，假若页地址不存在，则无操作。
- * 
+ *
  * @param page 页地址
  * @return 是否成功
  */
-int pmm_free_page(pid_t owner, void* page);
-
+int
+pmm_free_page(pid_t owner, ptr_t page);
 
-int pmm_ref_page(pid_t owner, void* page);
+int
+pmm_ref_page(pid_t owner, ptr_t page);
 
 #endif /* __LUNAIX_PMM_H */