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#ifndef _REGION_H
#define _REGION_H 1
#include <minix/callnr.h>
#include <minix/com.h>
#include <minix/config.h>
#include <minix/const.h>
#include <minix/ds.h>
#include <minix/endpoint.h>
#include <minix/minlib.h>
#include <minix/type.h>
#include <minix/ipc.h>
#include <minix/sysutil.h>
#include <minix/syslib.h>
#include <minix/const.h>
#include "phys_region.h"
#include "memtype.h"
#include "vm.h"
#include "fdref.h"
struct phys_block {
#if SANITYCHECKS
u32_t seencount;
#endif
phys_bytes phys; /* physical memory */
/* first in list of phys_regions that reference this block */
struct phys_region *firstregion;
u8_t refcount; /* Refcount of these pages */
u8_t flags;
};
#define PBF_INCACHE 0x01
typedef struct vir_region {
vir_bytes vaddr; /* virtual address, offset from pagetable */
vir_bytes length; /* length in bytes */
struct phys_region **physblocks;
u16_t flags;
struct vmproc *parent; /* Process that owns this vir_region. */
mem_type_t *def_memtype; /* Default instantiated memory type. */
int remaps;
int id; /* unique id */
union {
phys_bytes phys; /* VR_DIRECT */
struct {
endpoint_t ep;
vir_bytes vaddr;
int id;
} shared;
struct phys_block *pb_cache;
struct {
int inited;
struct fdref *fdref;
u64_t offset;
u16_t clearend;
} file;
} param;
/* AVL fields */
struct vir_region *lower, *higher;
int factor;
} region_t;
/* Mapping flags: */
#define VR_WRITABLE 0x001 /* Process may write here. */
#define VR_PHYS64K 0x004 /* Physical memory must be 64k aligned. */
#define VR_LOWER16MB 0x008
#define VR_LOWER1MB 0x010
#define VR_SHARED 0x040
#define VR_UNINITIALIZED 0x080 /* Do not clear after allocation */
/* Mapping type: */
#define VR_ANON 0x100 /* Memory to be cleared and allocated */
#define VR_DIRECT 0x200 /* Mapped, but not managed by VM */
#define VR_PREALLOC_MAP 0x400 /* Preallocated map. */
/* map_page_region_flags */
#define MF_PREALLOC 0x01
#endif
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