added DDEkit headers

include/ddekit/pgtab.h

@@ -0,0 +1,92 @@
+/*
+ * \brief   Virtual page-table facility
+ * \author  Thomas Friebel <tf13@os.inf.tu-dresden.de>
+ * \author  Christian Helmuth <ch12@os.inf.tu-dresden.de>
+ * \date    2006-11-03
+ */
+
+#ifndef _DDEKIT_PGTAB_H
+#define _DDEKIT_PGTAB_H
+
+#include <ddekit/ddekit.h>
+
+#include <ddekit/types.h>
+
+/* FIXME Region types may be defined by pgtab users. Do we really need them
+ * here? */
+enum ddekit_pgtab_type
+{
+	PTE_TYPE_OTHER, PTE_TYPE_LARGE, PTE_TYPE_UMA, PTE_TYPE_CONTIG
+};
+
+
+/**
+ * Set virtual->physical mapping for VM region
+ *
+ * \param virt      virtual start address for region
+ * \param phys      physical start address for region
+ * \param pages     number of pages in region
+ * \param type      pgtab type for region
+ */
+_PROTOTYPE( void ddekit_pgtab_set_region,
+            (void *virt, ddekit_addr_t phys, int pages, int type));
+
+
+/**
+ * Set virtual->physical mapping for VM region given a specific size in bytes.
+ *
+ * Internally, DDEKit manages regions with pages. However, DDEs do not need to tangle
+ * with the underlying mechanism and therefore can use this function that takes care
+ * of translating a size to an amount of pages.
+ */
+_PROTOTYPE( void ddekit_pgtab_set_region_with_size,
+            (void *virt, ddekit_addr_t phys, int size, int type));
+
+
+/**
+ * Clear virtual->physical mapping for VM region
+ *
+ * \param virt      virtual start address for region
+ * \param type      pgtab type for region
+ */
+_PROTOTYPE( void ddekit_pgtab_clear_region,
+            (void *virt, int type));
+
+/**
+ * Get physical address for virtual address
+ *
+ * \param virt     virtual address
+ *
+ * \return physical address
+ */
+_PROTOTYPE( ddekit_addr_t ddekit_pgtab_get_physaddr, (const void *virt));
+
+/**
+ * Get virtual address for physical address
+ *
+ * \param physical  physical address
+ *
+ * \return virtual address
+ */
+_PROTOTYPE( ddekit_addr_t ddekit_pgtab_get_virtaddr,
+            (const ddekit_addr_t physical));
+
+/**
+ * Get type of VM region.
+ *
+ * \param virt      virtual address
+
+ * \return VM region type
+ */
+_PROTOTYPE( int ddekit_pgtab_get_type, (const void *virt));
+
+/**
+ * Get size of VM region.
+ *
+ * \param virt      virtual address
+ *
+ * \return VM region size (in bytes)
+ */
+_PROTOTYPE( int ddekit_pgtab_get_size, (const void *virt));
+
+#endif