include/minix/vm.h

   1 /* Prototypes and definitions for VM interface. */
   2
   3 #ifndef _MINIX_VM_H
   4 #define _MINIX_VM_H
   5
   6 #include <minix/types.h>
   7 #include <minix/endpoint.h>
   8
   9 int vm_exit(endpoint_t ep);
  10 int vm_fork(endpoint_t ep, int slotno, endpoint_t *child_ep);
  11 int vm_brk(endpoint_t ep, char *newaddr);
  12 int vm_willexit(endpoint_t ep);
  13 int vm_adddma(endpoint_t proc_e, phys_bytes start, phys_bytes size);
  14 int vm_deldma(endpoint_t proc_e, phys_bytes start, phys_bytes size);
  15 int vm_getdma(endpoint_t *procp, phys_bytes *basep, phys_bytes *sizep);
  16 void *vm_map_phys(endpoint_t who, void *physaddr, size_t len);
  17 int vm_unmap_phys(endpoint_t who, void *vaddr, size_t len);
  18
  19 int vm_notify_sig(endpoint_t ep, endpoint_t ipc_ep);
  20 int vm_set_priv(int procnr, void *buf);
  21 int vm_update(endpoint_t src_e, endpoint_t dst_e);
  22 int vm_memctl(endpoint_t ep, int req);
  23 int vm_query_exit(endpoint_t *endpt);
  24 int vm_watch_exit(endpoint_t ep);
  25 int vm_forgetblock(u64_t id);
  26 void vm_forgetblocks(void);
  27 int vm_yield_block_get_block(u64_t yieldid, u64_t getid, void *mem,
  28         vir_bytes len);
  29
  30 /* Invalid ID with special meaning for the vm_yield_block_get_block
  31  * interface.
  32  */
  33 #define VM_BLOCKID_NONE make64(ULONG_MAX, ULONG_MAX)
  34
  35 /* VM kernel request types. */
  36 #define VMPTYPE_NONE            0
  37 #define VMPTYPE_CHECK           1
  38
  39 struct vm_stats_info {
  40   unsigned int vsi_pagesize;    /* page size */
  41   unsigned long vsi_total;      /* total number of memory pages */
  42   unsigned long vsi_free;       /* number of free pages */
  43   unsigned long vsi_largest;    /* largest number of consecutive free pages */
  44   unsigned long vsi_cached;     /* number of pages cached for file systems */
  45 };
  46
  47 struct vm_usage_info {
  48   vir_bytes vui_total;          /* total amount of process memory */
  49   vir_bytes vui_common;         /* part of memory mapped in more than once */
  50   vir_bytes vui_shared;         /* shared (non-COW) part of common memory */
  51 };
  52
  53 struct vm_region_info {
  54   vir_bytes vri_addr;           /* base address of region */
  55   vir_bytes vri_length;         /* length of region */
  56   int vri_prot;                 /* protection flags (PROT_) */
  57   int vri_flags;                /* memory flags (subset of MAP_) */
  58 };
  59
  60 #define MAX_VRI_COUNT   64      /* max. number of regions provided at once */
  61
  62 int vm_info_stats(struct vm_stats_info *vfi);
  63 int vm_info_usage(endpoint_t who, struct vm_usage_info *vui);
  64 int vm_info_region(endpoint_t who, struct vm_region_info *vri, int
  65         count, vir_bytes *next);
  66 int vm_procctl(endpoint_t ep, int param);
  67
  68 #endif /* _MINIX_VM_H */
  69