minix/servers/vm/arch/earm/pagetable.h

   1
   2 #ifndef _PAGETABLE_H
   3 #define _PAGETABLE_H 1
   4
   5 #include <stdint.h>
   6 #include <machine/vm.h>
   7
   8 #include "vm.h"
   9
  10 /* Mapping flags. */
  11 #define PTF_WRITE       ARM_VM_PTE_RW
  12 #define PTF_READ        ARM_VM_PTE_RO
  13 #define PTF_PRESENT     ARM_VM_PTE_PRESENT
  14 #define PTF_SUPER       ARM_VM_PTE_SUPER
  15 #define PTF_USER        ARM_VM_PTE_USER
  16 #define PTF_NOCACHE     ARM_VM_PTE_DEVICE
  17 #define PTF_CACHEWB     ARM_VM_PTE_WB
  18 #define PTF_CACHEWT     ARM_VM_PTE_WT
  19 #define PTF_SHARE       ARM_VM_PTE_S
  20
  21 #define ARCH_VM_DIR_ENTRIES     ARM_VM_DIR_ENTRIES
  22 #define ARCH_BIG_PAGE_SIZE      ARM_SECTION_SIZE
  23 #define ARCH_VM_ADDR_MASK       ARM_VM_ADDR_MASK
  24 #define ARCH_VM_PDE_MASK        ARM_VM_PDE_MASK
  25 #define ARCH_VM_PDE_PRESENT     ARM_VM_PDE_PRESENT
  26 #define ARCH_VM_PTE_PRESENT     ARM_VM_PTE_PRESENT
  27 #define ARCH_VM_PTE_USER        ARM_VM_PTE_USER
  28 #define ARCH_PAGEDIR_SIZE       ARM_PAGEDIR_SIZE
  29 #define ARCH_VM_PTE_RW          ARM_VM_PTE_RW
  30 #define ARCH_VM_BIGPAGE         ARM_VM_SECTION
  31 #define ARCH_VM_PT_ENTRIES      ARM_VM_PT_ENTRIES
  32 #define ARCH_VM_PTE_RO          ARM_VM_PTE_RO
  33
  34 /* For arch-specific PT routines to check if no bits outside
  35  * the regular flags are set.
  36  */
  37 #define PTF_ALLFLAGS    (PTF_READ|PTF_WRITE|PTF_PRESENT|PTF_SUPER|PTF_USER|PTF_NOCACHE|PTF_CACHEWB|PTF_CACHEWT|PTF_SHARE)
  38
  39 #define PFERR_PROT(e)   ((ARM_VM_PFE_FS(e) == ARM_VM_PFE_L1PERM) \
  40                          || (ARM_VM_PFE_FS(e) == ARM_VM_PFE_L2PERM))
  41 #define PFERR_NOPAGE(e) (!PFERR_PROT(e))
  42 #define PFERR_WRITE(e)  ((e) & ARM_VM_PFE_W)
  43 #define PFERR_READ(e)   (!((e) & ARM_VM_PFE_W))
  44
  45 #define VM_PAGE_SIZE    ARM_PAGE_SIZE
  46
  47 /* virtual address -> pde, pte macros */
  48 #define ARCH_VM_PTE(v) ARM_VM_PTE(v)
  49 #define ARCH_VM_PDE(v) ARM_VM_PDE(v)
  50
  51 #endif
  52