Kernel updates since December 2009

include/l4/glue/arm/mapping.h

@@ -0,0 +1,89 @@
+/*
+ * Generic mapping operations
+ *
+ * Operations on address space mappings that
+ * all subarchitectures support generically.
+ *
+ * Copyright (C) 2008 - 2010 B Labs Ltd.
+ * Written by Bahadir Balban
+ */
+
+#ifndef __ARM_GLUE_MAPPING_H__
+#define __ARM_GLUE_MAPPING_H__
+
+#include INC_SUBARCH(mm.h)
+
+#define TASK_PGD(x)		(x)->space->pgd
+
+unsigned int space_flags_to_ptflags(unsigned int flags);
+
+void add_mapping_pgd(unsigned long paddr, unsigned long vaddr,
+		     unsigned int size, unsigned int flags,
+		     pgd_table_t *pgd);
+
+void add_mapping(unsigned long paddr, unsigned long vaddr,
+		 unsigned int size, unsigned int flags);
+
+void add_boot_mapping(unsigned long paddr, unsigned long vaddr,
+		      unsigned int size, unsigned int flags);
+
+int remove_mapping(unsigned long vaddr);
+int remove_mapping_pgd(pgd_table_t *pgd, unsigned long vaddr);
+void remove_mapping_pgd_all_user(pgd_table_t *pgd);
+
+int check_mapping_pgd(unsigned long vaddr, unsigned long size,
+		      unsigned int flags, pgd_table_t *pgd);
+
+int check_mapping(unsigned long vaddr, unsigned long size,
+		  unsigned int flags);
+
+void copy_pgd_kern_all(pgd_table_t *);
+
+struct address_space;
+int delete_page_tables(struct address_space *space);
+int copy_user_tables(struct address_space *new, struct address_space *orig);
+void remap_as_pages(void *vstart, void *vend);
+
+void copy_pgds_by_vrange(pgd_table_t *to, pgd_table_t *from,
+			 unsigned long start, unsigned long end);
+
+/*
+ * TODO: Some of these may be made inline by
+ * removing their signature from here completely
+ * and creating an arch-specific mapping.h which
+ * has inline definitions or just signatures.
+ */
+
+pte_t virt_to_pte(unsigned long vaddr);
+pte_t *virt_to_ptep(unsigned long vaddr);
+pte_t virt_to_pte_from_pgd(pgd_table_t *pgd, unsigned long vaddr);
+unsigned long virt_to_phys_by_pgd(pgd_table_t *pgd, unsigned long vaddr);
+
+void arch_prepare_pte(u32 paddr, u32 vaddr, unsigned int flags,
+		      pte_t *ptep);
+
+void arch_write_pte(pte_t *ptep, pte_t pte, u32 vaddr);
+
+void arch_prepare_write_pte(u32 paddr, u32 vaddr,
+			    unsigned int flags, pte_t *ptep);
+
+pmd_t *arch_pick_pmd(pgd_table_t *pgd, unsigned long vaddr);
+
+void arch_write_pmd(pmd_t *pmd_entry, u32 pmd_phys, u32 vaddr);
+
+int arch_check_pte_access_perms(pte_t pte, unsigned int flags);
+
+pgd_table_t *arch_realloc_page_tables(void);
+
+void arch_copy_pgd_kernel_entries(pgd_table_t *to);
+
+int is_global_pgdi(int i);
+
+struct ktcb;
+void arch_space_switch(struct ktcb *task);
+
+int pgd_count_boot_pmds();
+
+void idle_task(void);
+
+#endif /* __ARM_GLUE_MAPPING_H__ */