1 /* Prototypes and definitions for VM interface. */ 2 3 #ifndef _MINIX_VM_H 4 #define _MINIX_VM_H 5 6 #include <sys/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_getrusage(endpoint_t endpt, void *addr, int children); 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_set_priv(endpoint_t ep, void *buf, int sys_proc); 20 int vm_update(endpoint_t src_e, endpoint_t dst_e, int flags); 21 int vm_memctl(endpoint_t ep, int req, void** addr, size_t *len); 22 int vm_prepare(endpoint_t src_e, endpoint_t dst_e, int flags); 23 int minix_vfs_mmap(endpoint_t who, off_t offset, size_t len, 24 dev_t dev, ino_t ino, int fd, u32_t vaddr, u16_t clearend, u16_t 25 flags); 26 27 void *minix_mmap_for(endpoint_t forwhom, 28 void *addr, size_t len, int prot, int flags, int fd, off_t offset); 29 int minix_vfs_mmap(endpoint_t who, off_t offset, size_t len, 30 dev_t dev, ino_t ino, int fd, u32_t vaddr, u16_t clearend, 31 u16_t flags); 32 33 /* minix vfs mmap flags */ 34 #define MVM_WRITABLE 0x8000 35 36 /* VM kernel request types. */ 37 #define VMPTYPE_NONE 0 38 #define VMPTYPE_CHECK 1 39 40 struct vm_stats_info { 41 unsigned int vsi_pagesize; /* page size */ 42 unsigned long vsi_total; /* total number of memory pages */ 43 unsigned long vsi_free; /* number of free pages */ 44 unsigned long vsi_largest; /* largest number of consecutive free pages */ 45 unsigned long vsi_cached; /* number of pages cached for file systems */ 46 }; 47 48 struct vm_usage_info { 49 vir_bytes vui_total; /* total amount of mapped process memory */ 50 vir_bytes vui_common; /* part of memory mapped in more than once */ 51 vir_bytes vui_shared; /* shared (non-COW) part of common memory */ 52 vir_bytes vui_virtual; /* total size of virtual address space */ 53 vir_bytes vui_mvirtual; /* idem but minus unmapped stack pages */ 54 uint64_t vui_maxrss; /* maximum resident set size (in KB) */ 55 uint64_t vui_minflt; /* minor page faults */ 56 uint64_t vui_majflt; /* major page faults */ 57 }; 58 59 struct vm_region_info { 60 vir_bytes vri_addr; /* base address of region */ 61 vir_bytes vri_length; /* length of region */ 62 int vri_prot; /* protection flags (PROT_) */ 63 int vri_flags; /* memory flags (subset of MAP_) */ 64 }; 65 66 #define MAX_VRI_COUNT 64 /* max. number of regions provided at once */ 67 68 int vm_info_stats(struct vm_stats_info *vfi); 69 int vm_info_usage(endpoint_t who, struct vm_usage_info *vui); 70 int vm_info_region(endpoint_t who, struct vm_region_info *vri, int 71 count, vir_bytes *next); 72 int vm_procctl_clear(endpoint_t ep); 73 int vm_procctl_handlemem(endpoint_t ep, vir_bytes m1, vir_bytes m2, int wr); 74 75 int vm_set_cacheblock(void *block, dev_t dev, off_t dev_offset, 76 ino_t ino, off_t ino_offset, u32_t *flags, int blocksize, 77 int setflags); 78 void *vm_map_cacheblock(dev_t dev, off_t dev_offset, 79 ino_t ino, off_t ino_offset, u32_t *flags, int blocksize); 80 int vm_forget_cacheblock(dev_t dev, off_t dev_offset, int blocksize); 81 int vm_clear_cache(dev_t dev); 82 83 /* flags for vm cache functions */ 84 #define VMMC_FLAGS_LOCKED 0x01 /* someone is updating the flags; don't read/write */ 85 #define VMMC_DIRTY 0x02 /* dirty buffer and it may not be evicted */ 86 #define VMMC_EVICTED 0x04 /* VM has evicted the buffer and it's invalid */ 87 #define VMMC_BLOCK_LOCKED 0x08 /* client is using it and it may not be evicted */ 88 89 /* special inode number for vm cache functions */ 90 #define VMC_NO_INODE 0 /* to reference a disk block, no associated file */ 91 92 /* setflags for vm_set_cacheblock, also used internally in VM */ 93 #define VMSF_ONCE 0x01 /* discard block after one-time use */ 94 95 #endif /* _MINIX_VM_H */ 96 97