minix/lib/syslib/sys_vmctl.c
Tomas Hruby b3b0a18403 allow kernel to tell VM extra physical addresses it wants mapped in.
used in the future for mapping in local APIC memory.
2009-11-11 12:07:06 +00:00

106 lines
2.1 KiB
C

#include "syslib.h"
PUBLIC int sys_vmctl(endpoint_t who, int param, u32_t value)
{
message m;
int r;
m.SVMCTL_WHO = who;
m.SVMCTL_PARAM = param;
m.SVMCTL_VALUE = value;
r = _taskcall(SYSTASK, SYS_VMCTL, &m);
return(r);
}
PUBLIC int sys_vmctl_get_pagefault_i386(endpoint_t *who, u32_t *cr2, u32_t *err)
{
message m;
int r;
m.SVMCTL_WHO = SELF;
m.SVMCTL_PARAM = VMCTL_GET_PAGEFAULT;
r = _taskcall(SYSTASK, SYS_VMCTL, &m);
if(r == OK) {
*who = m.SVMCTL_PF_WHO;
*cr2 = m.SVMCTL_PF_I386_CR2;
*err = m.SVMCTL_PF_I386_ERR;
}
return(r);
}
PUBLIC int sys_vmctl_get_cr3_i386(endpoint_t who, u32_t *cr3)
{
message m;
int r;
m.SVMCTL_WHO = who;
m.SVMCTL_PARAM = VMCTL_I386_GETCR3;
r = _taskcall(SYSTASK, SYS_VMCTL, &m);
if(r == OK) {
*cr3 = m.SVMCTL_VALUE;
}
return(r);
}
PUBLIC int sys_vmctl_get_memreq(endpoint_t *who, vir_bytes *mem,
vir_bytes *len, int *wrflag, endpoint_t *requestor)
{
message m;
int r;
m.SVMCTL_WHO = SELF;
m.SVMCTL_PARAM = VMCTL_MEMREQ_GET;
r = _taskcall(SYSTASK, SYS_VMCTL, &m);
if(r == OK) {
*who = m.SVMCTL_MRG_EP;
*mem = (vir_bytes) m.SVMCTL_MRG_ADDR;
*len = m.SVMCTL_MRG_LEN;
*wrflag = m.SVMCTL_MRG_WRITE;
*requestor = (endpoint_t) m.SVMCTL_MRG_REQUESTOR;
}
return r;
}
PUBLIC int sys_vmctl_enable_paging(struct mem_map *map)
{
message m;
m.SVMCTL_WHO = SELF;
m.SVMCTL_PARAM = VMCTL_ENABLE_PAGING;
m.SVMCTL_VALUE = (int) map;
return _taskcall(SYSTASK, SYS_VMCTL, &m);
}
PUBLIC int sys_vmctl_get_mapping(int index,
phys_bytes *addr, phys_bytes *len, int *flags)
{
int r;
message m;
m.SVMCTL_WHO = SELF;
m.SVMCTL_PARAM = VMCTL_KERN_PHYSMAP;
m.SVMCTL_VALUE = (int) index;
r = _taskcall(SYSTASK, SYS_VMCTL, &m);
if(r != OK)
return r;
*addr = m.SVMCTL_MAP_PHYS_ADDR;
*len = m.SVMCTL_MAP_PHYS_LEN;
*flags = m.SVMCTL_MAP_FLAGS;
return OK;
}
PUBLIC int sys_vmctl_reply_mapping(int index, vir_bytes addr)
{
int r;
message m;
m.SVMCTL_WHO = SELF;
m.SVMCTL_PARAM = VMCTL_KERN_MAP_REPLY;
m.SVMCTL_VALUE = index;
m.SVMCTL_MAP_VIR_ADDR = (char *) addr;
return _taskcall(SYSTASK, SYS_VMCTL, &m);
}