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 _PROTOTYPE( int vm_exit, (endpoint_t ep));
  10 _PROTOTYPE( int vm_fork, (endpoint_t ep, int slotno, endpoint_t *child_ep));
  11 _PROTOTYPE( int vm_brk, (endpoint_t ep, char *newaddr));
  12 _PROTOTYPE( int vm_exec_newmem, (endpoint_t ep, struct exec_newmem *args,
  13         int args_bytes, char **ret_stack_top, int *ret_flags));
  14 _PROTOTYPE( int vm_push_sig, (endpoint_t ep, vir_bytes *old_sp));
  15 _PROTOTYPE( int vm_willexit, (endpoint_t ep));
  16 _PROTOTYPE( int vm_adddma, (endpoint_t req_e, endpoint_t proc_e,
  17                                 phys_bytes start, phys_bytes size)      );
  18 _PROTOTYPE( int vm_deldma, (endpoint_t req_e, endpoint_t proc_e,
  19                                 phys_bytes start, phys_bytes size)      );
  20 _PROTOTYPE( int vm_getdma, (endpoint_t req_e, endpoint_t *procp,
  21                                 phys_bytes *basep, phys_bytes *sizep)   );
  22 _PROTOTYPE( void *vm_map_phys, (endpoint_t who, void *physaddr, size_t len));
  23 _PROTOTYPE( int vm_unmap_phys, (endpoint_t who, void *vaddr, size_t len));
  24
  25 _PROTOTYPE( int vm_notify_sig, (endpoint_t ep, endpoint_t ipc_ep));
  26 _PROTOTYPE( int vm_ctl, (int what, int param));
  27 _PROTOTYPE( int vm_set_priv, (int procnr, void *buf));
  28 _PROTOTYPE( int vm_update, (endpoint_t src_e, endpoint_t dst_e));
  29 _PROTOTYPE( int vm_query_exit, (int *endpt));
  30
  31 /* VM kernel request types. */
  32 #define VMPTYPE_NONE            0
  33 #define VMPTYPE_CHECK           1
  34 #define VMPTYPE_COWMAP          2
  35 #define VMPTYPE_SMAP            3
  36 #define VMPTYPE_SUNMAP          4
  37
  38 struct vm_stats_info {
  39   int vsi_pagesize;             /* page size */
  40   int vsi_total;                /* total number of memory pages */
  41   int vsi_free;                 /* number of free pages */
  42   int vsi_largest;              /* largest number of consecutive free pages */
  43 };
  44
  45 struct vm_usage_info {
  46   vir_bytes vui_total;          /* total amount of process memory */
  47   vir_bytes vui_common;         /* part of memory mapped in more than once */
  48   vir_bytes vui_shared;         /* shared (non-COW) part of common memory */
  49 };
  50
  51 struct vm_region_info {
  52   int vri_seg;                  /* segment of virtual region (T or D) */
  53   vir_bytes vri_addr;           /* base address of region */
  54   vir_bytes vri_length;         /* length of region */
  55   int vri_prot;                 /* protection flags (PROT_) */
  56   int vri_flags;                /* memory flags (subset of MAP_) */
  57 };
  58
  59 #define MAX_VRI_COUNT   64      /* max. number of regions provided at once */
  60
  61 _PROTOTYPE( int vm_info_stats, (struct vm_stats_info *vfi)              );
  62 _PROTOTYPE( int vm_info_usage, (endpoint_t who,
  63         struct vm_usage_info *vui)                                      );
  64 _PROTOTYPE( int vm_info_region, (endpoint_t who,
  65         struct vm_region_info *vri, int count, vir_bytes *next)         );
  66
  67 #endif /* _MINIX_VM_H */
  68